diff options
Diffstat (limited to 'package/linux/kernel-patches/302-ebtables')
| -rw-r--r-- | package/linux/kernel-patches/302-ebtables | 9355 |
1 files changed, 9355 insertions, 0 deletions
diff --git a/package/linux/kernel-patches/302-ebtables b/package/linux/kernel-patches/302-ebtables new file mode 100644 index 0000000000..27c5cb54c7 --- /dev/null +++ b/package/linux/kernel-patches/302-ebtables @@ -0,0 +1,9355 @@ +diff -Nur linux-mips-cvs/include/linux/if_bridge.h linux-ebtables/include/linux/if_bridge.h +--- linux-mips-cvs/include/linux/if_bridge.h 2000-02-24 01:13:20.000000000 +0100 ++++ linux-ebtables/include/linux/if_bridge.h 2005-02-07 05:52:50.000000000 +0100 +@@ -102,7 +102,8 @@ + struct net_bridge_port; + + extern int (*br_ioctl_hook)(unsigned long arg); +-extern void (*br_handle_frame_hook)(struct sk_buff *skb); ++extern int (*br_handle_frame_hook)(struct sk_buff *skb); ++extern int (*br_should_route_hook)(struct sk_buff **pskb); + + #endif + +diff -Nur linux-mips-cvs/include/linux/netfilter.h linux-ebtables/include/linux/netfilter.h +--- linux-mips-cvs/include/linux/netfilter.h 2005-01-20 03:19:24.000000000 +0100 ++++ linux-ebtables/include/linux/netfilter.h 2005-02-07 05:52:50.000000000 +0100 +@@ -118,17 +118,23 @@ + /* This is gross, but inline doesn't cut it for avoiding the function + call in fast path: gcc doesn't inline (needs value tracking?). --RR */ + #ifdef CONFIG_NETFILTER_DEBUG +-#define NF_HOOK nf_hook_slow ++#define NF_HOOK(pf, hook, skb, indev, outdev, okfn) \ ++nf_hook_slow((pf), (hook), (skb), (indev), (outdev), (okfn), INT_MIN) ++#define NF_HOOK_THRESH nf_hook_slow + #else + #define NF_HOOK(pf, hook, skb, indev, outdev, okfn) \ + (list_empty(&nf_hooks[(pf)][(hook)]) \ + ? (okfn)(skb) \ +- : nf_hook_slow((pf), (hook), (skb), (indev), (outdev), (okfn))) ++ : nf_hook_slow((pf), (hook), (skb), (indev), (outdev), (okfn), INT_MIN)) ++#define NF_HOOK_THRESH(pf, hook, skb, indev, outdev, okfn, thresh) \ ++(list_empty(&nf_hooks[(pf)][(hook)]) \ ++ ? (okfn)(skb) \ ++ : nf_hook_slow((pf), (hook), (skb), (indev), (outdev), (okfn), (thresh))) + #endif + + int nf_hook_slow(int pf, unsigned int hook, struct sk_buff *skb, + struct net_device *indev, struct net_device *outdev, +- int (*okfn)(struct sk_buff *)); ++ int (*okfn)(struct sk_buff *), int thresh); + + /* Call setsockopt() */ + int nf_setsockopt(struct sock *sk, int pf, int optval, char *opt, +diff -Nur linux-mips-cvs/include/linux/netfilter_bridge/ebt_802_3.h linux-ebtables/include/linux/netfilter_bridge/ebt_802_3.h +--- linux-mips-cvs/include/linux/netfilter_bridge/ebt_802_3.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux-ebtables/include/linux/netfilter_bridge/ebt_802_3.h 2005-02-07 05:52:50.000000000 +0100 +@@ -0,0 +1,60 @@ ++#ifndef __LINUX_BRIDGE_EBT_802_3_H ++#define __LINUX_BRIDGE_EBT_802_3_H ++ ++#define EBT_802_3_SAP 0x01 ++#define EBT_802_3_TYPE 0x02 ++ ++#define EBT_802_3_MATCH "802_3" ++ ++/* ++ * If frame has DSAP/SSAP value 0xaa you must check the SNAP type ++ * to discover what kind of packet we're carrying. ++ */ ++#define CHECK_TYPE 0xaa ++ ++/* ++ * Control field may be one or two bytes. If the first byte has ++ * the value 0x03 then the entire length is one byte, otherwise it is two. ++ * One byte controls are used in Unnumbered Information frames. ++ * Two byte controls are used in Numbered Information frames. ++ */ ++#define IS_UI 0x03 ++ ++#define EBT_802_3_MASK (EBT_802_3_SAP | EBT_802_3_TYPE | EBT_802_3) ++ ++/* ui has one byte ctrl, ni has two */ ++struct hdr_ui { ++ uint8_t dsap; ++ uint8_t ssap; ++ uint8_t ctrl; ++ uint8_t orig[3]; ++ uint16_t type; ++}; ++ ++struct hdr_ni { ++ uint8_t dsap; ++ uint8_t ssap; ++ uint16_t ctrl; ++ uint8_t orig[3]; ++ uint16_t type; ++}; ++ ++struct ebt_802_3_hdr { ++ uint8_t daddr[6]; ++ uint8_t saddr[6]; ++ uint16_t len; ++ union { ++ struct hdr_ui ui; ++ struct hdr_ni ni; ++ } llc; ++}; ++ ++struct ebt_802_3_info ++{ ++ uint8_t sap; ++ uint16_t type; ++ uint8_t bitmask; ++ uint8_t invflags; ++}; ++ ++#endif +diff -Nur linux-mips-cvs/include/linux/netfilter_bridge/ebt_among.h linux-ebtables/include/linux/netfilter_bridge/ebt_among.h +--- linux-mips-cvs/include/linux/netfilter_bridge/ebt_among.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux-ebtables/include/linux/netfilter_bridge/ebt_among.h 2005-02-07 05:52:50.000000000 +0100 +@@ -0,0 +1,65 @@ ++#ifndef __LINUX_BRIDGE_EBT_AMONG_H ++#define __LINUX_BRIDGE_EBT_AMONG_H ++ ++#define EBT_AMONG_DST 0x01 ++#define EBT_AMONG_SRC 0x02 ++ ++/* Grzegorz Borowiak <grzes@gnu.univ.gda.pl> 2003 ++ * ++ * Write-once-read-many hash table, used for checking if a given ++ * MAC address belongs to a set or not and possibly for checking ++ * if it is related with a given IPv4 address. ++ * ++ * The hash value of an address is its last byte. ++ * ++ * In real-world ethernet addresses, values of the last byte are ++ * evenly distributed and there is no need to consider other bytes. ++ * It would only slow the routines down. ++ * ++ * For MAC address comparison speedup reasons, we introduce a trick. ++ * MAC address is mapped onto an array of two 32-bit integers. ++ * This pair of integers is compared with MAC addresses in the ++ * hash table, which are stored also in form of pairs of integers ++ * (in `cmp' array). This is quick as it requires only two elementary ++ * number comparisons in worst case. Further, we take advantage of ++ * fact that entropy of 3 last bytes of address is larger than entropy ++ * of 3 first bytes. So first we compare 4 last bytes of addresses and ++ * if they are the same we compare 2 first. ++ * ++ * Yes, it is a memory overhead, but in 2003 AD, who cares? ++ */ ++ ++struct ebt_mac_wormhash_tuple ++{ ++ uint32_t cmp[2]; ++ uint32_t ip; ++}; ++ ++struct ebt_mac_wormhash ++{ ++ int table[257]; ++ int poolsize; ++ struct ebt_mac_wormhash_tuple pool[0]; ++}; ++ ++#define ebt_mac_wormhash_size(x) ((x) ? sizeof(struct ebt_mac_wormhash) \ ++ + (x)->poolsize * sizeof(struct ebt_mac_wormhash_tuple) : 0) ++ ++struct ebt_among_info ++{ ++ int wh_dst_ofs; ++ int wh_src_ofs; ++ int bitmask; ++}; ++ ++#define EBT_AMONG_DST_NEG 0x1 ++#define EBT_AMONG_SRC_NEG 0x2 ++ ++#define ebt_among_wh_dst(x) ((x)->wh_dst_ofs ? \ ++ (struct ebt_mac_wormhash*)((char*)(x) + (x)->wh_dst_ofs) : NULL) ++#define ebt_among_wh_src(x) ((x)->wh_src_ofs ? \ ++ (struct ebt_mac_wormhash*)((char*)(x) + (x)->wh_src_ofs) : NULL) ++ ++#define EBT_AMONG_MATCH "among" ++ ++#endif +diff -Nur linux-mips-cvs/include/linux/netfilter_bridge/ebt_arp.h linux-ebtables/include/linux/netfilter_bridge/ebt_arp.h +--- linux-mips-cvs/include/linux/netfilter_bridge/ebt_arp.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux-ebtables/include/linux/netfilter_bridge/ebt_arp.h 2005-02-07 05:52:50.000000000 +0100 +@@ -0,0 +1,32 @@ ++#ifndef __LINUX_BRIDGE_EBT_ARP_H ++#define __LINUX_BRIDGE_EBT_ARP_H ++ ++#define EBT_ARP_OPCODE 0x01 ++#define EBT_ARP_HTYPE 0x02 ++#define EBT_ARP_PTYPE 0x04 ++#define EBT_ARP_SRC_IP 0x08 ++#define EBT_ARP_DST_IP 0x10 ++#define EBT_ARP_SRC_MAC 0x20 ++#define EBT_ARP_DST_MAC 0x40 ++#define EBT_ARP_MASK (EBT_ARP_OPCODE | EBT_ARP_HTYPE | EBT_ARP_PTYPE | \ ++ EBT_ARP_SRC_IP | EBT_ARP_DST_IP | EBT_ARP_SRC_MAC | EBT_ARP_DST_MAC) ++#define EBT_ARP_MATCH "arp" ++ ++struct ebt_arp_info ++{ ++ uint16_t htype; ++ uint16_t ptype; ++ uint16_t opcode; ++ uint32_t saddr; ++ uint32_t smsk; ++ uint32_t daddr; ++ uint32_t dmsk; ++ unsigned char smaddr[ETH_ALEN]; ++ unsigned char smmsk[ETH_ALEN]; ++ unsigned char dmaddr[ETH_ALEN]; ++ unsigned char dmmsk[ETH_ALEN]; ++ uint8_t bitmask; ++ uint8_t invflags; ++}; ++ ++#endif +diff -Nur linux-mips-cvs/include/linux/netfilter_bridge/ebt_arpreply.h linux-ebtables/include/linux/netfilter_bridge/ebt_arpreply.h +--- linux-mips-cvs/include/linux/netfilter_bridge/ebt_arpreply.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux-ebtables/include/linux/netfilter_bridge/ebt_arpreply.h 2005-02-07 05:52:50.000000000 +0100 +@@ -0,0 +1,11 @@ ++#ifndef __LINUX_BRIDGE_EBT_ARPREPLY_H ++#define __LINUX_BRIDGE_EBT_ARPREPLY_H ++ ++struct ebt_arpreply_info ++{ ++ unsigned char mac[ETH_ALEN]; ++ int target; ++}; ++#define EBT_ARPREPLY_TARGET "arpreply" ++ ++#endif +diff -Nur linux-mips-cvs/include/linux/netfilter_bridge/ebt_ip.h linux-ebtables/include/linux/netfilter_bridge/ebt_ip.h +--- linux-mips-cvs/include/linux/netfilter_bridge/ebt_ip.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux-ebtables/include/linux/netfilter_bridge/ebt_ip.h 2005-02-07 05:52:50.000000000 +0100 +@@ -0,0 +1,43 @@ ++/* ++ * ebt_ip ++ * ++ * Authors: ++ * Bart De Schuymer <bart.de.schuymer@pandora.be> ++ * ++ * April, 2002 ++ * ++ * Changes: ++ * added ip-sport and ip-dport ++ * Innominate Security Technologies AG <mhopf@innominate.com> ++ * September, 2002 ++ */ ++ ++#ifndef __LINUX_BRIDGE_EBT_IP_H ++#define __LINUX_BRIDGE_EBT_IP_H ++ ++#define EBT_IP_SOURCE 0x01 ++#define EBT_IP_DEST 0x02 ++#define EBT_IP_TOS 0x04 ++#define EBT_IP_PROTO 0x08 ++#define EBT_IP_SPORT 0x10 ++#define EBT_IP_DPORT 0x20 ++#define EBT_IP_MASK (EBT_IP_SOURCE | EBT_IP_DEST | EBT_IP_TOS | EBT_IP_PROTO |\ ++ EBT_IP_SPORT | EBT_IP_DPORT ) ++#define EBT_IP_MATCH "ip" ++ ++// the same values are used for the invflags ++struct ebt_ip_info ++{ ++ uint32_t saddr; ++ uint32_t daddr; ++ uint32_t smsk; ++ uint32_t dmsk; ++ uint8_t tos; ++ uint8_t protocol; ++ uint8_t bitmask; ++ uint8_t invflags; ++ uint16_t sport[2]; ++ uint16_t dport[2]; ++}; ++ ++#endif +diff -Nur linux-mips-cvs/include/linux/netfilter_bridge/ebt_limit.h linux-ebtables/include/linux/netfilter_bridge/ebt_limit.h +--- linux-mips-cvs/include/linux/netfilter_bridge/ebt_limit.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux-ebtables/include/linux/netfilter_bridge/ebt_limit.h 2005-02-07 05:52:50.000000000 +0100 +@@ -0,0 +1,23 @@ ++#ifndef __LINUX_BRIDGE_EBT_LIMIT_H ++#define __LINUX_BRIDGE_EBT_LIMIT_H ++ ++#define EBT_LIMIT_MATCH "limit" ++ ++/* timings are in milliseconds. */ ++#define EBT_LIMIT_SCALE 10000 ++ ++/* 1/10,000 sec period => max of 10,000/sec. Min rate is then 429490 ++ seconds, or one every 59 hours. */ ++ ++struct ebt_limit_info ++{ ++ u_int32_t avg; /* Average secs between packets * scale */ ++ u_int32_t burst; /* Period multiplier for upper limit. */ ++ ++ /* Used internally by the kernel */ ++ unsigned long prev; ++ u_int32_t credit; ++ u_int32_t credit_cap, cost; ++}; ++ ++#endif +diff -Nur linux-mips-cvs/include/linux/netfilter_bridge/ebt_log.h linux-ebtables/include/linux/netfilter_bridge/ebt_log.h +--- linux-mips-cvs/include/linux/netfilter_bridge/ebt_log.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux-ebtables/include/linux/netfilter_bridge/ebt_log.h 2005-02-07 05:52:50.000000000 +0100 +@@ -0,0 +1,17 @@ ++#ifndef __LINUX_BRIDGE_EBT_LOG_H ++#define __LINUX_BRIDGE_EBT_LOG_H ++ ++#define EBT_LOG_IP 0x01 // if the frame is made by ip, log the ip information ++#define EBT_LOG_ARP 0x02 ++#define EBT_LOG_MASK (EBT_LOG_IP | EBT_LOG_ARP) ++#define EBT_LOG_PREFIX_SIZE 30 ++#define EBT_LOG_WATCHER "log" ++ ++struct ebt_log_info ++{ ++ uint8_t loglevel; ++ uint8_t prefix[EBT_LOG_PREFIX_SIZE]; ++ uint32_t bitmask; ++}; ++ ++#endif +diff -Nur linux-mips-cvs/include/linux/netfilter_bridge/ebt_mark_m.h linux-ebtables/include/linux/netfilter_bridge/ebt_mark_m.h +--- linux-mips-cvs/include/linux/netfilter_bridge/ebt_mark_m.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux-ebtables/include/linux/netfilter_bridge/ebt_mark_m.h 2005-02-07 05:52:50.000000000 +0100 +@@ -0,0 +1,15 @@ ++#ifndef __LINUX_BRIDGE_EBT_MARK_M_H ++#define __LINUX_BRIDGE_EBT_MARK_M_H ++ ++#define EBT_MARK_AND 0x01 ++#define EBT_MARK_OR 0x02 ++#define EBT_MARK_MASK (EBT_MARK_AND | EBT_MARK_OR) ++struct ebt_mark_m_info ++{ ++ unsigned long mark, mask; ++ uint8_t invert; ++ uint8_t bitmask; ++}; ++#define EBT_MARK_MATCH "mark_m" ++ ++#endif +diff -Nur linux-mips-cvs/include/linux/netfilter_bridge/ebt_mark_t.h linux-ebtables/include/linux/netfilter_bridge/ebt_mark_t.h +--- linux-mips-cvs/include/linux/netfilter_bridge/ebt_mark_t.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux-ebtables/include/linux/netfilter_bridge/ebt_mark_t.h 2005-02-07 05:52:50.000000000 +0100 +@@ -0,0 +1,12 @@ ++#ifndef __LINUX_BRIDGE_EBT_MARK_T_H ++#define __LINUX_BRIDGE_EBT_MARK_T_H ++ ++struct ebt_mark_t_info ++{ ++ unsigned long mark; ++ // EBT_ACCEPT, EBT_DROP or EBT_CONTINUE or EBT_RETURN ++ int target; ++}; ++#define EBT_MARK_TARGET "mark" ++ ++#endif +diff -Nur linux-mips-cvs/include/linux/netfilter_bridge/ebt_nat.h linux-ebtables/include/linux/netfilter_bridge/ebt_nat.h +--- linux-mips-cvs/include/linux/netfilter_bridge/ebt_nat.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux-ebtables/include/linux/netfilter_bridge/ebt_nat.h 2005-02-07 05:52:50.000000000 +0100 +@@ -0,0 +1,13 @@ ++#ifndef __LINUX_BRIDGE_EBT_NAT_H ++#define __LINUX_BRIDGE_EBT_NAT_H ++ ++struct ebt_nat_info ++{ ++ unsigned char mac[ETH_ALEN]; ++ // EBT_ACCEPT, EBT_DROP, EBT_CONTINUE or EBT_RETURN ++ int target; ++}; ++#define EBT_SNAT_TARGET "snat" ++#define EBT_DNAT_TARGET "dnat" ++ ++#endif +diff -Nur linux-mips-cvs/include/linux/netfilter_bridge/ebt_pkttype.h linux-ebtables/include/linux/netfilter_bridge/ebt_pkttype.h +--- linux-mips-cvs/include/linux/netfilter_bridge/ebt_pkttype.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux-ebtables/include/linux/netfilter_bridge/ebt_pkttype.h 2005-02-07 05:52:50.000000000 +0100 +@@ -0,0 +1,11 @@ ++#ifndef __LINUX_BRIDGE_EBT_PKTTYPE_H ++#define __LINUX_BRIDGE_EBT_PKTTYPE_H ++ ++struct ebt_pkttype_info ++{ ++ uint8_t pkt_type; ++ uint8_t invert; ++}; ++#define EBT_PKTTYPE_MATCH "pkttype" ++ ++#endif +diff -Nur linux-mips-cvs/include/linux/netfilter_bridge/ebt_redirect.h linux-ebtables/include/linux/netfilter_bridge/ebt_redirect.h +--- linux-mips-cvs/include/linux/netfilter_bridge/ebt_redirect.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux-ebtables/include/linux/netfilter_bridge/ebt_redirect.h 2005-02-07 05:52:50.000000000 +0100 +@@ -0,0 +1,11 @@ ++#ifndef __LINUX_BRIDGE_EBT_REDIRECT_H ++#define __LINUX_BRIDGE_EBT_REDIRECT_H ++ ++struct ebt_redirect_info ++{ ++ // EBT_ACCEPT, EBT_DROP or EBT_CONTINUE or EBT_RETURN ++ int target; ++}; ++#define EBT_REDIRECT_TARGET "redirect" ++ ++#endif +diff -Nur linux-mips-cvs/include/linux/netfilter_bridge/ebt_stp.h linux-ebtables/include/linux/netfilter_bridge/ebt_stp.h +--- linux-mips-cvs/include/linux/netfilter_bridge/ebt_stp.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux-ebtables/include/linux/netfilter_bridge/ebt_stp.h 2005-02-07 05:52:50.000000000 +0100 +@@ -0,0 +1,46 @@ ++#ifndef __LINUX_BRIDGE_EBT_STP_H ++#define __LINUX_BRIDGE_EBT_STP_H ++ ++#define EBT_STP_TYPE 0x0001 ++ ++#define EBT_STP_FLAGS 0x0002 ++#define EBT_STP_ROOTPRIO 0x0004 ++#define EBT_STP_ROOTADDR 0x0008 ++#define EBT_STP_ROOTCOST 0x0010 ++#define EBT_STP_SENDERPRIO 0x0020 ++#define EBT_STP_SENDERADDR 0x0040 ++#define EBT_STP_PORT 0x0080 ++#define EBT_STP_MSGAGE 0x0100 ++#define EBT_STP_MAXAGE 0x0200 ++#define EBT_STP_HELLOTIME 0x0400 ++#define EBT_STP_FWDD 0x0800 ++ ++#define EBT_STP_MASK 0x0fff ++#define EBT_STP_CONFIG_MASK 0x0ffe ++ ++#define EBT_STP_MATCH "stp" ++ ++struct ebt_stp_config_info ++{ ++ uint8_t flags; ++ uint16_t root_priol, root_priou; ++ char root_addr[6], root_addrmsk[6]; ++ uint32_t root_costl, root_costu; ++ uint16_t sender_priol, sender_priou; ++ char sender_addr[6], sender_addrmsk[6]; ++ uint16_t portl, portu; ++ uint16_t msg_agel, msg_ageu; ++ uint16_t max_agel, max_ageu; ++ uint16_t hello_timel, hello_timeu; ++ uint16_t forward_delayl, forward_delayu; ++}; ++ ++struct ebt_stp_info ++{ ++ uint8_t type; ++ struct ebt_stp_config_info config; ++ uint16_t bitmask; ++ uint16_t invflags; ++}; ++ ++#endif +diff -Nur linux-mips-cvs/include/linux/netfilter_bridge/ebt_ulog.h linux-ebtables/include/linux/netfilter_bridge/ebt_ulog.h +--- linux-mips-cvs/include/linux/netfilter_bridge/ebt_ulog.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux-ebtables/include/linux/netfilter_bridge/ebt_ulog.h 2005-02-07 05:52:50.000000000 +0100 +@@ -0,0 +1,33 @@ ++#ifndef _EBT_ULOG_H ++#define _EBT_ULOG_H ++ ++#define EBT_ULOG_DEFAULT_NLGROUP 0 ++#define EBT_ULOG_DEFAULT_QTHRESHOLD 1 ++#define EBT_ULOG_MAXNLGROUPS 32 /* hardcoded netlink max */ ++#define EBT_ULOG_PREFIX_LEN 32 ++#define EBT_ULOG_MAX_QLEN 50 ++#define EBT_ULOG_WATCHER "ulog" ++ ++struct ebt_ulog_info { ++ uint32_t nlgroup; ++ unsigned int cprange; ++ unsigned int qthreshold; ++ char prefix[EBT_ULOG_PREFIX_LEN]; ++}; ++ ++typedef struct ebt_ulog_packet_msg { ++ char indev[IFNAMSIZ]; ++ char outdev[IFNAMSIZ]; ++ char physindev[IFNAMSIZ]; ++ char physoutdev[IFNAMSIZ]; ++ char prefix[EBT_ULOG_PREFIX_LEN]; ++ struct timeval stamp; ++ unsigned long mark; ++ unsigned int hook; ++ size_t data_len; ++ /* The complete packet, including Ethernet header and perhaps ++ * the VLAN header is appended */ ++ unsigned char data[0] __attribute__ ((aligned (__alignof__(int)))); ++} ebt_ulog_packet_msg_t; ++ ++#endif /* _EBT_ULOG_H */ +diff -Nur linux-mips-cvs/include/linux/netfilter_bridge/ebt_vlan.h linux-ebtables/include/linux/netfilter_bridge/ebt_vlan.h +--- linux-mips-cvs/include/linux/netfilter_bridge/ebt_vlan.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux-ebtables/include/linux/netfilter_bridge/ebt_vlan.h 2005-02-07 05:52:50.000000000 +0100 +@@ -0,0 +1,20 @@ ++#ifndef __LINUX_BRIDGE_EBT_VLAN_H ++#define __LINUX_BRIDGE_EBT_VLAN_H ++ ++#define EBT_VLAN_ID 0x01 ++#define EBT_VLAN_PRIO 0x02 ++#define EBT_VLAN_ENCAP 0x04 ++#define EBT_VLAN_MASK (EBT_VLAN_ID | EBT_VLAN_PRIO | EBT_VLAN_ENCAP) ++#define EBT_VLAN_MATCH "vlan" ++ ++struct ebt_vlan_info { ++ uint16_t id; /* VLAN ID {1-4095} */ ++ uint8_t prio; /* VLAN User Priority {0-7} */ ++ uint16_t encap; /* VLAN Encapsulated frame code {0-65535} */ ++ uint8_t bitmask; /* Args bitmask bit 1=1 - ID arg, ++ bit 2=1 User-Priority arg, bit 3=1 encap*/ ++ uint8_t invflags; /* Inverse bitmask bit 1=1 - inversed ID arg, ++ bit 2=1 - inversed Pirority arg */ ++}; ++ ++#endif +diff -Nur linux-mips-cvs/include/linux/netfilter_bridge/ebtables.h linux-ebtables/include/linux/netfilter_bridge/ebtables.h +--- linux-mips-cvs/include/linux/netfilter_bridge/ebtables.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux-ebtables/include/linux/netfilter_bridge/ebtables.h 2005-02-07 05:52:50.000000000 +0100 +@@ -0,0 +1,361 @@ ++/* ++ * ebtables ++ * ++ * Authors: ++ * Bart De Schuymer <bart.de.schuymer@pandora.be> ++ * ++ * ebtables.c,v 2.0, September, 2002 ++ * ++ * This code is stongly inspired on the iptables code which is ++ * Copyright (C) 1999 Paul `Rusty' Russell & Michael J. Neuling ++ */ ++ ++#ifndef __LINUX_BRIDGE_EFF_H ++#define __LINUX_BRIDGE_EFF_H ++#include <linux/if.h> ++#include <linux/netfilter_bridge.h> ++#include <linux/if_ether.h> ++ ++#define EBT_TABLE_MAXNAMELEN 32 ++#define EBT_CHAIN_MAXNAMELEN EBT_TABLE_MAXNAMELEN ++#define EBT_FUNCTION_MAXNAMELEN EBT_TABLE_MAXNAMELEN ++ ++// verdicts >0 are "branches" ++#define EBT_ACCEPT -1 ++#define EBT_DROP -2 ++#define EBT_CONTINUE -3 ++#define EBT_RETURN -4 ++#define NUM_STANDARD_TARGETS 4 ++ ++struct ebt_counter ++{ ++ uint64_t pcnt; ++ uint64_t bcnt; ++}; ++ ++struct ebt_entries { ++ // this field is always set to zero ++ // See EBT_ENTRY_OR_ENTRIES. ++ // Must be same size as ebt_entry.bitmask ++ unsigned int distinguisher; ++ // the chain name ++ char name[EBT_CHAIN_MAXNAMELEN]; ++ // counter offset for this chain ++ unsigned int counter_offset; ++ // one standard (accept, drop, return) per hook ++ int policy; ++ // nr. of entries ++ unsigned int nentries; ++ // entry list ++ char data[0]; ++}; ++ ++// used for the bitmask of struct ebt_entry ++ ++// This is a hack to make a difference between an ebt_entry struct and an ++// ebt_entries struct when traversing the entries from start to end. ++// Using this simplifies the code alot, while still being able to use ++// ebt_entries. ++// Contrary, iptables doesn't use something like ebt_entries and therefore uses ++// different techniques for naming the policy and such. So, iptables doesn't ++// need a hack like this. ++#define EBT_ENTRY_OR_ENTRIES 0x01 ++// these are the normal masks ++#define EBT_NOPROTO 0x02 ++#define EBT_802_3 0x04 ++#define EBT_SOURCEMAC 0x08 ++#define EBT_DESTMAC 0x10 ++#define EBT_F_MASK (EBT_NOPROTO | EBT_802_3 | EBT_SOURCEMAC | EBT_DESTMAC \ ++ | EBT_ENTRY_OR_ENTRIES) ++ ++#define EBT_IPROTO 0x01 ++#define EBT_IIN 0x02 ++#define EBT_IOUT 0x04 ++#define EBT_ISOURCE 0x8 ++#define EBT_IDEST 0x10 ++#define EBT_ILOGICALIN 0x20 ++#define EBT_ILOGICALOUT 0x40 ++#define EBT_INV_MASK (EBT_IPROTO | EBT_IIN | EBT_IOUT | EBT_ILOGICALIN \ ++ | EBT_ILOGICALOUT | EBT_ISOURCE | EBT_IDEST) ++ ++struct ebt_entry_match ++{ ++ union { ++ char name[EBT_FUNCTION_MAXNAMELEN]; ++ struct ebt_match *match; ++ } u; ++ // size of data ++ unsigned int match_size; ++ unsigned char data[0]; ++}; ++ ++struct ebt_entry_watcher ++{ ++ union { ++ char name[EBT_FUNCTION_MAXNAMELEN]; ++ struct ebt_watcher *watcher; ++ } u; ++ // size of data ++ unsigned int watcher_size; ++ unsigned char data[0]; ++}; ++ ++struct ebt_entry_target ++{ ++ union { ++ char name[EBT_FUNCTION_MAXNAMELEN]; ++ struct ebt_target *target; ++ } u; ++ // size of data ++ unsigned int target_size; ++ unsigned char data[0]; ++}; ++ ++#define EBT_STANDARD_TARGET "standard" ++struct ebt_standard_target ++{ ++ struct ebt_entry_target target; ++ int verdict; ++}; ++ ++// one entry ++struct ebt_entry { ++ // this needs to be the first field ++ unsigned int bitmask; ++ unsigned int invflags; ++ uint16_t ethproto; ++ // the physical in-dev ++ char in[IFNAMSIZ]; ++ // the logical in-dev ++ char logical_in[IFNAMSIZ]; ++ // the physical out-dev ++ char out[IFNAMSIZ]; ++ // the logical out-dev ++ char logical_out[IFNAMSIZ]; ++ unsigned char sourcemac[ETH_ALEN]; ++ unsigned char sourcemsk[ETH_ALEN]; ++ unsigned char destmac[ETH_ALEN]; ++ unsigned char destmsk[ETH_ALEN]; ++ // sizeof ebt_entry + matches ++ unsigned int watchers_offset; ++ // sizeof ebt_entry + matches + watchers ++ unsigned int target_offset; ++ // sizeof ebt_entry + matches + watchers + target ++ unsigned int next_offset; ++ unsigned char elems[0]; ++}; ++ ++struct ebt_replace ++{ ++ char name[EBT_TABLE_MAXNAMELEN]; ++ unsigned int valid_hooks; ++ // nr of rules in the table ++ unsigned int nentries; ++ // total size of the entries ++ unsigned int entries_size; ++ // start of the chains ++ struct ebt_entries *hook_entry[NF_BR_NUMHOOKS]; ++ // nr of counters userspace expects back ++ unsigned int num_counters; ++ // where the kernel will put the old counters ++ struct ebt_counter *counters; ++ char *entries; ++}; ++ ++// [gs]etsockopt numbers ++#define EBT_BASE_CTL 128 ++ ++#define EBT_SO_SET_ENTRIES (EBT_BASE_CTL) ++#define EBT_SO_SET_COUNTERS (EBT_SO_SET_ENTRIES+1) ++#define EBT_SO_SET_MAX (EBT_SO_SET_COUNTERS+1) ++ ++#define EBT_SO_GET_INFO (EBT_BASE_CTL) ++#define EBT_SO_GET_ENTRIES (EBT_SO_GET_INFO+1) ++#define EBT_SO_GET_INIT_INFO (EBT_SO_GET_ENTRIES+1) ++#define EBT_SO_GET_INIT_ENTRIES (EBT_SO_GET_INIT_INFO+1) ++#define EBT_SO_GET_MAX (EBT_SO_GET_INIT_ENTRIES+1) ++ ++#ifdef __KERNEL__ ++ ++// return values for match() functions ++#define EBT_MATCH 0 ++#define EBT_NOMATCH 1 ++ ++struct ebt_match ++{ ++ struct list_head list; ++ const char name[EBT_FUNCTION_MAXNAMELEN]; ++ // 0 == it matches ++ int (*match)(const struct sk_buff *skb, const struct net_device *in, ++ const struct net_device *out, const void *matchdata, ++ unsigned int datalen); ++ // 0 == let it in ++ int (*check)(const char *tablename, unsigned int hookmask, ++ const struct ebt_entry *e, void *matchdata, unsigned int datalen); ++ void (*destroy)(void *matchdata, unsigned int datalen); ++ struct module *me; ++}; ++ ++struct ebt_watcher ++{ ++ struct list_head list; ++ const char name[EBT_FUNCTION_MAXNAMELEN]; ++ void (*watcher)(const struct sk_buff *skb, unsigned int hooknr, ++ const struct net_device *in, const struct net_device *out, ++ const void *watcherdata, unsigned int datalen); ++ // 0 == let it in ++ int (*check)(const char *tablename, unsigned int hookmask, ++ const struct ebt_entry *e, void *watcherdata, unsigned int datalen); ++ void (*destroy)(void *watcherdata, unsigned int datalen); ++ struct module *me; ++}; ++ ++struct ebt_target ++{ ++ struct list_head list; ++ const char name[EBT_FUNCTION_MAXNAMELEN]; ++ // returns one of the standard verdicts ++ int (*target)(struct sk_buff **pskb, unsigned int hooknr, ++ const struct net_device *in, const struct net_device *out, ++ const void *targetdata, unsigned int datalen); ++ // 0 == let it in ++ int (*check)(const char *tablename, unsigned int hookmask, ++ const struct ebt_entry *e, void *targetdata, unsigned int datalen); ++ void (*destroy)(void *targetdata, unsigned int datalen); ++ struct module *me; ++}; ++ ++// used for jumping from and into user defined chains (udc) ++struct ebt_chainstack ++{ ++ struct ebt_entries *chaininfo; // pointer to chain data ++ struct ebt_entry *e; // pointer to entry data ++ unsigned int n; // n'th entry ++}; ++ ++struct ebt_table_info ++{ ++ // total size of the entries ++ unsigned int entries_size; ++ unsigned int nentries; ++ // pointers to the start of the chains ++ struct ebt_entries *hook_entry[NF_BR_NUMHOOKS]; ++ // room to maintain the stack used for jumping from and into udc ++ struct ebt_chainstack **chainstack; ++ char *entries; ++ struct ebt_counter counters[0] ____cacheline_aligned; ++}; ++ ++struct ebt_table ++{ ++ struct list_head list; ++ char name[EBT_TABLE_MAXNAMELEN]; ++ struct ebt_replace *table; ++ unsigned int valid_hooks; ++ rwlock_t lock; ++ // e.g. could be the table explicitly only allows certain ++ // matches, targets, ... 0 == let it in ++ int (*check)(const struct ebt_table_info *info, ++ unsigned int valid_hooks); ++ // the data used by the kernel ++ struct ebt_table_info *private; ++}; ++ ++#define EBT_ALIGN(s) (((s) + (__alignof__(struct ebt_entry_target)-1)) & \ ++ ~(__alignof__(struct ebt_entry_target)-1)) ++extern int ebt_register_table(struct ebt_table *table); ++extern void ebt_unregister_table(struct ebt_table *table); ++extern int ebt_register_match(struct ebt_match *match); ++extern void ebt_unregister_match(struct ebt_match *match); ++extern int ebt_register_watcher(struct ebt_watcher *watcher); ++extern void ebt_unregister_watcher(struct ebt_watcher *watcher); ++extern int ebt_register_target(struct ebt_target *target); ++extern void ebt_unregister_target(struct ebt_target *target); ++extern unsigned int ebt_do_table(unsigned int hook, struct sk_buff **pskb, ++ const struct net_device *in, const struct net_device *out, ++ struct ebt_table *table); ++ ++ // Used in the kernel match() functions ++#define FWINV(bool,invflg) ((bool) ^ !!(info->invflags & invflg)) ++// True if the hook mask denotes that the rule is in a base chain, ++// used in the check() functions ++#define BASE_CHAIN (hookmask & (1 << NF_BR_NUMHOOKS)) ++// Clear the bit in the hook mask that tells if the rule is on a base chain ++#define CLEAR_BASE_CHAIN_BIT (hookmask &= ~(1 << NF_BR_NUMHOOKS)) ++// True if the target is not a standard target ++#define INVALID_TARGET (info->target < -NUM_STANDARD_TARGETS || info->target >= 0) ++ ++#endif /* __KERNEL__ */ ++ ++// blatently stolen from ip_tables.h ++// fn returns 0 to continue iteration ++#define EBT_MATCH_ITERATE(e, fn, args...) \ ++({ \ ++ unsigned int __i; \ ++ int __ret = 0; \ ++ struct ebt_entry_match *__match; \ ++ \ ++ for (__i = sizeof(struct ebt_entry); \ ++ __i < (e)->watchers_offset; \ ++ __i += __match->match_size + \ ++ sizeof(struct ebt_entry_match)) { \ ++ __match = (void *)(e) + __i; \ ++ \ ++ __ret = fn(__match , ## args); \ ++ if (__ret != 0) \ ++ break; \ ++ } \ ++ if (__ret == 0) { \ ++ if (__i != (e)->watchers_offset) \ ++ __ret = -EINVAL; \ ++ } \ ++ __ret; \ ++}) ++ ++#define EBT_WATCHER_ITERATE(e, fn, args...) \ ++({ \ ++ unsigned int __i; \ ++ int __ret = 0; \ ++ struct ebt_entry_watcher *__watcher; \ ++ \ ++ for (__i = e->watchers_offset; \ ++ __i < (e)->target_offset; \ ++ __i += __watcher->watcher_size + \ ++ sizeof(struct ebt_entry_watcher)) { \ ++ __watcher = (void *)(e) + __i; \ ++ \ ++ __ret = fn(__watcher , ## args); \ ++ if (__ret != 0) \ ++ break; \ ++ } \ ++ if (__ret == 0) { \ ++ if (__i != (e)->target_offset) \ ++ __ret = -EINVAL; \ ++ } \ ++ __ret; \ ++}) ++ ++#define EBT_ENTRY_ITERATE(entries, size, fn, args...) \ ++({ \ ++ unsigned int __i; \ ++ int __ret = 0; \ ++ struct ebt_entry *__entry; \ ++ \ ++ for (__i = 0; __i < (size);) { \ ++ __entry = (void *)(entries) + __i; \ ++ __ret = fn(__entry , ## args); \ ++ if (__ret != 0) \ ++ break; \ ++ if (__entry->bitmask != 0) \ ++ __i += __entry->next_offset; \ ++ else \ ++ __i += sizeof(struct ebt_entries); \ ++ } \ ++ if (__ret == 0) { \ ++ if (__i != (size)) \ ++ __ret = -EINVAL; \ ++ } \ ++ __ret; \ ++}) ++ ++#endif +diff -Nur linux-mips-cvs/include/linux/netfilter_bridge.h linux-ebtables/include/linux/netfilter_bridge.h +--- linux-mips-cvs/include/linux/netfilter_bridge.h 2001-08-22 05:25:11.000000000 +0200 ++++ linux-ebtables/include/linux/netfilter_bridge.h 2005-02-07 05:52:50.000000000 +0100 +@@ -6,6 +6,10 @@ + + #include <linux/config.h> + #include <linux/netfilter.h> ++#if defined(__KERNEL__) && defined(CONFIG_NETFILTER) ++#include <asm/atomic.h> ++#include <linux/if_ether.h> ++#endif + + /* Bridge Hooks */ + /* After promisc drops, checksum checks. */ +@@ -18,7 +22,76 @@ + #define NF_BR_LOCAL_OUT 3 + /* Packets about to hit the wire. */ + #define NF_BR_POST_ROUTING 4 +-#define NF_BR_NUMHOOKS 5 ++/* Not really a hook, but used for the ebtables broute table */ ++#define NF_BR_BROUTING 5 ++#define NF_BR_NUMHOOKS 6 ++ ++#ifdef __KERNEL__ ++ ++#define BRNF_PKT_TYPE 0x01 ++#define BRNF_BRIDGED_DNAT 0x02 ++#define BRNF_DONT_TAKE_PARENT 0x04 ++#define BRNF_BRIDGED 0x08 ++#define BRNF_NF_BRIDGE_PREROUTING 0x10 ++ ++enum nf_br_hook_priorities { ++ NF_BR_PRI_FIRST = INT_MIN, ++ NF_BR_PRI_NAT_DST_BRIDGED = -300, ++ NF_BR_PRI_FILTER_BRIDGED = -200, ++ NF_BR_PRI_BRNF = 0, ++ NF_BR_PRI_NAT_DST_OTHER = 100, ++ NF_BR_PRI_FILTER_OTHER = 200, ++ NF_BR_PRI_NAT_SRC = 300, ++ NF_BR_PRI_LAST = INT_MAX, ++}; ++ ++#ifdef CONFIG_NETFILTER ++static inline ++struct nf_bridge_info *nf_bridge_alloc(struct sk_buff *skb) ++{ ++ struct nf_bridge_info **nf_bridge = &(skb->nf_bridge); ++ ++ if ((*nf_bridge = kmalloc(sizeof(**nf_bridge), GFP_ATOMIC)) != NULL) { ++ atomic_set(&(*nf_bridge)->use, 1); ++ (*nf_bridge)->mask = 0; ++ (*nf_bridge)->physindev = (*nf_bridge)->physoutdev = NULL; ++#if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE) ++ (*nf_bridge)->netoutdev = NULL; ++#endif ++ } ++ ++ return *nf_bridge; ++} ++ ++/* Only used in br_forward.c */ ++static inline ++void nf_bridge_maybe_copy_header(struct sk_buff *skb) ++{ ++ if (skb->nf_bridge) { ++ if (skb->protocol == __constant_htons(ETH_P_8021Q)) { ++ memcpy(skb->data - 18, skb->nf_bridge->data, 18); ++ skb_push(skb, 4); ++ } else ++ memcpy(skb->data - 16, skb->nf_bridge->data, 16); ++ } ++} ++ ++static inline ++void nf_bridge_save_header(struct sk_buff *skb) ++{ ++ int header_size = 16; ++ ++ if (skb->protocol == __constant_htons(ETH_P_8021Q)) ++ header_size = 18; ++ memcpy(skb->nf_bridge->data, skb->data - header_size, header_size); ++} + ++struct bridge_skb_cb { ++ union { ++ __u32 ipv4; ++ } daddr; ++}; ++#endif /* CONFIG_NETFILTER */ + ++#endif /* __KERNEL__ */ + #endif +diff -Nur linux-mips-cvs/include/linux/netfilter_ipv4/ipt_physdev.h linux-ebtables/include/linux/netfilter_ipv4/ipt_physdev.h +--- linux-mips-cvs/include/linux/netfilter_ipv4/ipt_physdev.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux-ebtables/include/linux/netfilter_ipv4/ipt_physdev.h 2005-02-07 05:52:50.000000000 +0100 +@@ -0,0 +1,24 @@ ++#ifndef _IPT_PHYSDEV_H ++#define _IPT_PHYSDEV_H ++ ++#ifdef __KERNEL__ ++#include <linux/if.h> ++#endif ++ ++#define IPT_PHYSDEV_OP_IN 0x01 ++#define IPT_PHYSDEV_OP_OUT 0x02 ++#define IPT_PHYSDEV_OP_BRIDGED 0x04 ++#define IPT_PHYSDEV_OP_ISIN 0x08 ++#define IPT_PHYSDEV_OP_ISOUT 0x10 ++#define IPT_PHYSDEV_OP_MASK (0x20 - 1) ++ ++struct ipt_physdev_info { ++ char physindev[IFNAMSIZ]; ++ char in_mask[IFNAMSIZ]; ++ char physoutdev[IFNAMSIZ]; ++ char out_mask[IFNAMSIZ]; ++ u_int8_t invert; ++ u_int8_t bitmask; ++}; ++ ++#endif /*_IPT_PHYSDEV_H*/ +diff -Nur linux-mips-cvs/include/linux/netfilter_ipv4.h linux-ebtables/include/linux/netfilter_ipv4.h +--- linux-mips-cvs/include/linux/netfilter_ipv4.h 2002-02-26 07:00:31.000000000 +0100 ++++ linux-ebtables/include/linux/netfilter_ipv4.h 2005-02-07 05:52:50.000000000 +0100 +@@ -52,8 +52,10 @@ + enum nf_ip_hook_priorities { + NF_IP_PRI_FIRST = INT_MIN, + NF_IP_PRI_CONNTRACK = -200, ++ NF_IP_PRI_BRIDGE_SABOTAGE_FORWARD = -175, + NF_IP_PRI_MANGLE = -150, + NF_IP_PRI_NAT_DST = -100, ++ NF_IP_PRI_BRIDGE_SABOTAGE_LOCAL_OUT = -50, + NF_IP_PRI_FILTER = 0, + NF_IP_PRI_NAT_SRC = 100, + NF_IP_PRI_LAST = INT_MAX, +diff -Nur linux-mips-cvs/include/linux/netfilter_ipv6.h linux-ebtables/include/linux/netfilter_ipv6.h +--- linux-mips-cvs/include/linux/netfilter_ipv6.h 2001-01-11 05:02:45.000000000 +0100 ++++ linux-ebtables/include/linux/netfilter_ipv6.h 2005-02-07 05:52:50.000000000 +0100 +@@ -57,8 +57,10 @@ + enum nf_ip6_hook_priorities { + NF_IP6_PRI_FIRST = INT_MIN, + NF_IP6_PRI_CONNTRACK = -200, ++ NF_IP6_PRI_BRIDGE_SABOTAGE_FORWARD = -175, + NF_IP6_PRI_MANGLE = -150, + NF_IP6_PRI_NAT_DST = -100, ++ NF_IP6_PRI_BRIDGE_SABOTAGE_LOCAL_OUT = -50, + NF_IP6_PRI_FILTER = 0, + NF_IP6_PRI_NAT_SRC = 100, + NF_IP6_PRI_LAST = INT_MAX, +diff -Nur linux-mips-cvs/include/linux/skbuff.h linux-ebtables/include/linux/skbuff.h +--- linux-mips-cvs/include/linux/skbuff.h 2005-01-31 12:56:47.000000000 +0100 ++++ linux-ebtables/include/linux/skbuff.h 2005-02-07 05:52:50.000000000 +0100 +@@ -92,6 +92,20 @@ + struct nf_ct_info { + struct nf_conntrack *master; + }; ++ ++#if defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE) ++struct nf_bridge_info { ++ atomic_t use; ++ struct net_device *physindev; ++ struct net_device *physoutdev; ++#if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE) ++ struct net_device *netoutdev; ++#endif ++ unsigned int mask; ++ unsigned long data[32 / sizeof(unsigned long)]; ++}; ++#endif ++ + #endif + + struct sk_buff_head { +@@ -208,6 +222,9 @@ + #ifdef CONFIG_NETFILTER_DEBUG + unsigned int nf_debug; + #endif ++#if defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE) ++ struct nf_bridge_info *nf_bridge; /* Saved data about a bridged frame - see br_netfilter.c */ ++#endif + #endif /*CONFIG_NETFILTER*/ + + #if defined(CONFIG_HIPPI) +@@ -1175,6 +1192,20 @@ + skb->nf_debug = 0; + #endif + } ++ ++#if defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE) ++static inline void nf_bridge_put(struct nf_bridge_info *nf_bridge) ++{ ++ if (nf_bridge && atomic_dec_and_test(&nf_bridge->use)) ++ kfree(nf_bridge); ++} ++static inline void nf_bridge_get(struct nf_bridge_info *nf_bridge) ++{ ++ if (nf_bridge) ++ atomic_inc(&nf_bridge->use); ++} ++#endif ++ + #else /* CONFIG_NETFILTER */ + static inline void nf_reset(struct sk_buff *skb) {} + #endif /* CONFIG_NETFILTER */ +diff -Nur linux-mips-cvs/include/linux/sysctl.h linux-ebtables/include/linux/sysctl.h +--- linux-mips-cvs/include/linux/sysctl.h 2004-11-29 18:47:18.000000000 +0100 ++++ linux-ebtables/include/linux/sysctl.h 2005-02-07 05:52:50.000000000 +0100 +@@ -608,6 +608,15 @@ + NET_DECNET_CONF_DEV_STATE = 7 + }; + ++/* /proc/sys/net/bridge */ ++enum { ++ NET_BRIDGE_NF_CALL_ARPTABLES = 1, ++ NET_BRIDGE_NF_CALL_IPTABLES = 2, ++ NET_BRIDGE_NF_CALL_IP6TABLES = 3, ++ NET_BRIDGE_NF_FILTER_VLAN_TAGGED = 4, ++}; ++ ++ + /* CTL_PROC names: */ + + /* CTL_FS names: */ +diff -Nur linux-mips-cvs/include/linux/sysctl.h.orig linux-ebtables/include/linux/sysctl.h.orig +--- linux-mips-cvs/include/linux/sysctl.h.orig 1970-01-01 01:00:00.000000000 +0100 ++++ linux-ebtables/include/linux/sysctl.h.orig 2004-11-29 18:47:18.000000000 +0100 +@@ -0,0 +1,841 @@ ++/* ++ * sysctl.h: General linux system control interface ++ * ++ * Begun 24 March 1995, Stephen Tweedie ++ * ++ **************************************************************** ++ **************************************************************** ++ ** ++ ** WARNING: ++ ** The values in this file are exported to user space via ++ ** the sysctl() binary interface. Do *NOT* change the ++ ** numbering of any existing values here, and do not change ++ ** any numbers within any one set of values. If you have ++ ** to redefine an existing interface, use a new number for it. ++ ** The kernel will then return ENOTDIR to any application using ++ ** the old binary interface. ++ ** ++ ** --sct ++ ** ++ **************************************************************** ++ **************************************************************** ++ */ ++ ++#ifndef _LINUX_SYSCTL_H ++#define _LINUX_SYSCTL_H ++ ++#include <linux/kernel.h> ++#include <linux/types.h> ++#include <linux/list.h> ++ ++struct file; ++ ++#define CTL_MAXNAME 10 ++ ++struct __sysctl_args { ++ int *name; ++ int nlen; ++ void *oldval; ++ size_t *oldlenp; ++ void *newval; ++ size_t newlen; ++ unsigned long __unused[4]; ++}; ++ ++/* Define sysctl names first */ ++ ++/* Top-level names: */ ++ ++/* For internal pattern-matching use only: */ ++#ifdef __KERNEL__ ++#define CTL_ANY -1 /* Matches any name */ ++#define CTL_NONE 0 ++#endif ++ ++enum ++{ ++ CTL_KERN=1, /* General kernel info and control */ ++ CTL_VM=2, /* VM management */ ++ CTL_NET=3, /* Networking */ ++ CTL_PROC=4, /* Process info */ ++ CTL_FS=5, /* Filesystems */ ++ CTL_DEBUG=6, /* Debugging */ ++ CTL_DEV=7, /* Devices */ ++ CTL_BUS=8, /* Busses */ ++ CTL_ABI=9, /* Binary emulation */ ++ CTL_CPU=10 /* CPU stuff (speed scaling, etc) */ ++}; ++ ++/* CTL_BUS names: */ ++enum ++{ ++ CTL_BUS_ISA=1 /* ISA */ ++}; ++ ++/* CTL_KERN names: */ ++enum ++{ ++ KERN_OSTYPE=1, /* string: system version */ ++ KERN_OSRELEASE=2, /* string: system release */ ++ KERN_OSREV=3, /* int: system revision */ ++ KERN_VERSION=4, /* string: compile time info */ ++ KERN_SECUREMASK=5, /* struct: maximum rights mask */ ++ KERN_PROF=6, /* table: profiling information */ ++ KERN_NODENAME=7, ++ KERN_DOMAINNAME=8, ++ ++ KERN_CAP_BSET=14, /* int: capability bounding set */ ++ KERN_PANIC=15, /* int: panic timeout */ ++ KERN_REALROOTDEV=16, /* real root device to mount after initrd */ ++ ++ KERN_SPARC_REBOOT=21, /* reboot command on Sparc */ ++ KERN_CTLALTDEL=22, /* int: allow ctl-alt-del to reboot */ ++ KERN_PRINTK=23, /* struct: control printk logging parameters */ ++ KERN_NAMETRANS=24, /* Name translation */ ++ KERN_PPC_HTABRECLAIM=25, /* turn htab reclaimation on/off on PPC */ ++ KERN_PPC_ZEROPAGED=26, /* turn idle page zeroing on/off on PPC */ ++ KERN_PPC_POWERSAVE_NAP=27, /* use nap mode for power saving */ ++ KERN_MODPROBE=28, ++ KERN_SG_BIG_BUFF=29, ++ KERN_ACCT=30, /* BSD process accounting parameters */ ++ KERN_PPC_L2CR=31, /* l2cr register on PPC */ ++ ++ KERN_RTSIGNR=32, /* Number of rt sigs queued */ ++ KERN_RTSIGMAX=33, /* Max queuable */ ++ ++ KERN_SHMMAX=34, /* long: Maximum shared memory segment */ ++ KERN_MSGMAX=35, /* int: Maximum size of a messege */ ++ KERN_MSGMNB=36, /* int: Maximum message queue size */ ++ KERN_MSGPOOL=37, /* int: Maximum system message pool size */ ++ KERN_SYSRQ=38, /* int: Sysreq enable */ ++ KERN_MAX_THREADS=39, /* int: Maximum nr of threads in the system */ ++ KERN_RANDOM=40, /* Random driver */ ++ KERN_SHMALL=41, /* int: Maximum size of shared memory */ ++ KERN_MSGMNI=42, /* int: msg queue identifiers */ ++ KERN_SEM=43, /* struct: sysv semaphore limits */ ++ KERN_SPARC_STOP_A=44, /* int: Sparc Stop-A enable */ ++ KERN_SHMMNI=45, /* int: shm array identifiers */ ++ KERN_OVERFLOWUID=46, /* int: overflow UID */ ++ KERN_OVERFLOWGID=47, /* int: overflow GID */ ++ KERN_SHMPATH=48, /* string: path to shm fs */ ++ KERN_HOTPLUG=49, /* string: path to hotplug policy agent */ ++ KERN_IEEE_EMULATION_WARNINGS=50, /* int: unimplemented ieee instructions */ ++ KERN_S390_USER_DEBUG_LOGGING=51, /* int: dumps of user faults */ ++ KERN_CORE_USES_PID=52, /* int: use core or core.%pid */ ++ KERN_TAINTED=53, /* int: various kernel tainted flags */ ++ KERN_CADPID=54, /* int: PID of the process to notify on CAD */ ++ KERN_CORE_PATTERN=56, /* string: pattern for core-files */ ++ KERN_PPC_L3CR=57, /* l3cr register on PPC */ ++ KERN_EXCEPTION_TRACE=58, /* boolean: exception trace */ ++ KERN_CORE_SETUID=59, /* int: set to allow core dumps of setuid apps */ ++ KERN_SPARC_SCONS_PWROFF=64, /* int: serial console power-off halt */ ++}; ++ ++ ++/* CTL_VM names: */ ++enum ++{ ++ VM_SWAPCTL=1, /* struct: Set vm swapping control */ ++ VM_SWAPOUT=2, /* int: Linear or sqrt() swapout for hogs */ ++ VM_FREEPG=3, /* struct: Set free page thresholds */ ++ VM_BDFLUSH=4, /* struct: Control buffer cache flushing */ ++ VM_OVERCOMMIT_MEMORY=5, /* Turn off the virtual memory safety limit */ ++ VM_BUFFERMEM=6, /* struct: Set buffer memory thresholds */ ++ VM_PAGECACHE=7, /* struct: Set cache memory thresholds */ ++ VM_PAGERDAEMON=8, /* struct: Control kswapd behaviour */ ++ VM_PGT_CACHE=9, /* struct: Set page table cache parameters */ ++ VM_PAGE_CLUSTER=10, /* int: set number of pages to swap together */ ++ VM_MAX_MAP_COUNT=11, /* int: Maximum number of active map areas */ ++ VM_MIN_READAHEAD=12, /* Min file readahead */ ++ VM_MAX_READAHEAD=13, /* Max file readahead */ ++ VM_VFS_SCAN_RATIO=14, /* part of the inactive vfs lists to scan */ ++ VM_LRU_BALANCE_RATIO=15,/* balance active and inactive caches */ ++ VM_PASSES=16, /* number of vm passes before failing */ ++ VM_PAGEBUF=17, /* struct: Control pagebuf parameters */ ++ VM_GFP_DEBUG=18, /* debug GFP failures */ ++ VM_CACHE_SCAN_RATIO=19, /* part of the inactive cache list to scan */ ++ VM_MAPPED_RATIO=20, /* amount of unfreeable pages that triggers swapout */ ++ VM_LAPTOP_MODE=21, /* kernel in laptop flush mode */ ++ VM_BLOCK_DUMP=22, /* dump fs activity to log */ ++ VM_ANON_LRU=23, /* immediatly insert anon pages in the vm page lru */ ++}; ++ ++ ++/* CTL_NET names: */ ++enum ++{ ++ NET_CORE=1, ++ NET_ETHER=2, ++ NET_802=3, ++ NET_UNIX=4, ++ NET_IPV4=5, ++ NET_IPX=6, ++ NET_ATALK=7, ++ NET_NETROM=8, ++ NET_AX25=9, ++ NET_BRIDGE=10, ++ NET_ROSE=11, ++ NET_IPV6=12, ++ NET_X25=13, ++ NET_TR=14, ++ NET_DECNET=15, ++ NET_ECONET=16, ++ NET_KHTTPD=17, ++ NET_SCTP=18 ++}; ++ ++/* /proc/sys/kernel/random */ ++enum ++{ ++ RANDOM_POOLSIZE=1, ++ RANDOM_ENTROPY_COUNT=2, ++ RANDOM_READ_THRESH=3, ++ RANDOM_WRITE_THRESH=4, ++ RANDOM_BOOT_ID=5, ++ RANDOM_UUID=6 ++}; ++ ++/* /proc/sys/bus/isa */ ++enum ++{ ++ BUS_ISA_MEM_BASE=1, ++ BUS_ISA_PORT_BASE=2, ++ BUS_ISA_PORT_SHIFT=3 ++}; ++ ++/* /proc/sys/net/core */ ++enum ++{ ++ NET_CORE_WMEM_MAX=1, ++ NET_CORE_RMEM_MAX=2, ++ NET_CORE_WMEM_DEFAULT=3, ++ NET_CORE_RMEM_DEFAULT=4, ++/* was NET_CORE_DESTROY_DELAY */ ++ NET_CORE_MAX_BACKLOG=6, ++ NET_CORE_FASTROUTE=7, ++ NET_CORE_MSG_COST=8, ++ NET_CORE_MSG_BURST=9, ++ NET_CORE_OPTMEM_MAX=10, ++ NET_CORE_HOT_LIST_LENGTH=11, ++ NET_CORE_DIVERT_VERSION=12, ++ NET_CORE_NO_CONG_THRESH=13, ++ NET_CORE_NO_CONG=14, ++ NET_CORE_LO_CONG=15, ++ NET_CORE_MOD_CONG=16, ++ NET_CORE_DEV_WEIGHT=17, ++ NET_CORE_SOMAXCONN=18, ++}; ++ ++/* /proc/sys/net/ethernet */ ++ ++/* /proc/sys/net/802 */ ++ ++/* /proc/sys/net/unix */ ++ ++enum ++{ ++ NET_UNIX_DESTROY_DELAY=1, ++ NET_UNIX_DELETE_DELAY=2, ++ NET_UNIX_MAX_DGRAM_QLEN=3, ++}; ++ ++/* /proc/sys/net/ipv4 */ ++enum ++{ ++ /* v2.0 compatibile variables */ ++ NET_IPV4_FORWARD=8, ++ NET_IPV4_DYNADDR=9, ++ ++ NET_IPV4_CONF=16, ++ NET_IPV4_NEIGH=17, ++ NET_IPV4_ROUTE=18, ++ NET_IPV4_FIB_HASH=19, ++ NET_IPV4_NETFILTER=20, ++ ++ NET_IPV4_TCP_TIMESTAMPS=33, ++ NET_IPV4_TCP_WINDOW_SCALING=34, ++ NET_IPV4_TCP_SACK=35, ++ NET_IPV4_TCP_RETRANS_COLLAPSE=36, ++ NET_IPV4_DEFAULT_TTL=37, ++ NET_IPV4_AUTOCONFIG=38, ++ NET_IPV4_NO_PMTU_DISC=39, ++ NET_IPV4_TCP_SYN_RETRIES=40, ++ NET_IPV4_IPFRAG_HIGH_THRESH=41, ++ NET_IPV4_IPFRAG_LOW_THRESH=42, ++ NET_IPV4_IPFRAG_TIME=43, ++ NET_IPV4_TCP_MAX_KA_PROBES=44, ++ NET_IPV4_TCP_KEEPALIVE_TIME=45, ++ NET_IPV4_TCP_KEEPALIVE_PROBES=46, ++ NET_IPV4_TCP_RETRIES1=47, ++ NET_IPV4_TCP_RETRIES2=48, ++ NET_IPV4_TCP_FIN_TIMEOUT=49, ++ NET_IPV4_IP_MASQ_DEBUG=50, ++ NET_TCP_SYNCOOKIES=51, ++ NET_TCP_STDURG=52, ++ NET_TCP_RFC1337=53, ++ NET_TCP_SYN_TAILDROP=54, ++ NET_TCP_MAX_SYN_BACKLOG=55, ++ NET_IPV4_LOCAL_PORT_RANGE=56, ++ NET_IPV4_ICMP_ECHO_IGNORE_ALL=57, ++ NET_IPV4_ICMP_ECHO_IGNORE_BROADCASTS=58, ++ NET_IPV4_ICMP_SOURCEQUENCH_RATE=59, ++ NET_IPV4_ICMP_DESTUNREACH_RATE=60, ++ NET_IPV4_ICMP_TIMEEXCEED_RATE=61, ++ NET_IPV4_ICMP_PARAMPROB_RATE=62, ++ NET_IPV4_ICMP_ECHOREPLY_RATE=63, ++ NET_IPV4_ICMP_IGNORE_BOGUS_ERROR_RESPONSES=64, ++ NET_IPV4_IGMP_MAX_MEMBERSHIPS=65, ++ NET_TCP_TW_RECYCLE=66, ++ NET_IPV4_ALWAYS_DEFRAG=67, ++ NET_IPV4_TCP_KEEPALIVE_INTVL=68, ++ NET_IPV4_INET_PEER_THRESHOLD=69, ++ NET_IPV4_INET_PEER_MINTTL=70, ++ NET_IPV4_INET_PEER_MAXTTL=71, ++ NET_IPV4_INET_PEER_GC_MINTIME=72, ++ NET_IPV4_INET_PEER_GC_MAXTIME=73, ++ NET_TCP_ORPHAN_RETRIES=74, ++ NET_TCP_ABORT_ON_OVERFLOW=75, ++ NET_TCP_SYNACK_RETRIES=76, ++ NET_TCP_MAX_ORPHANS=77, ++ NET_TCP_MAX_TW_BUCKETS=78, ++ NET_TCP_FACK=79, ++ NET_TCP_REORDERING=80, ++ NET_TCP_ECN=81, ++ NET_TCP_DSACK=82, ++ NET_TCP_MEM=83, ++ NET_TCP_WMEM=84, ++ NET_TCP_RMEM=85, ++ NET_TCP_APP_WIN=86, ++ NET_TCP_ADV_WIN_SCALE=87, ++ NET_IPV4_NONLOCAL_BIND=88, ++ NET_IPV4_ICMP_RATELIMIT=89, ++ NET_IPV4_ICMP_RATEMASK=90, ++ NET_TCP_TW_REUSE=91, ++ NET_TCP_FRTO=92, ++ NET_TCP_LOW_LATENCY=93, ++ NET_IPV4_IPFRAG_SECRET_INTERVAL=94, ++ NET_TCP_WESTWOOD=95, ++ NET_IPV4_IGMP_MAX_MSF=96, ++ NET_TCP_NO_METRICS_SAVE=97, ++ NET_TCP_VEGAS=98, ++ NET_TCP_VEGAS_ALPHA=99, ++ NET_TCP_VEGAS_BETA=100, ++ NET_TCP_VEGAS_GAMMA=101, ++ NET_TCP_BIC=102, ++ NET_TCP_BIC_FAST_CONVERGENCE=103, ++ NET_TCP_BIC_LOW_WINDOW=104, ++ NET_TCP_DEFAULT_WIN_SCALE=105, ++ NET_TCP_MODERATE_RCVBUF=106, ++}; ++ ++enum { ++ NET_IPV4_ROUTE_FLUSH=1, ++ NET_IPV4_ROUTE_MIN_DELAY=2, ++ NET_IPV4_ROUTE_MAX_DELAY=3, ++ NET_IPV4_ROUTE_GC_THRESH=4, ++ NET_IPV4_ROUTE_MAX_SIZE=5, ++ NET_IPV4_ROUTE_GC_MIN_INTERVAL=6, ++ NET_IPV4_ROUTE_GC_TIMEOUT=7, ++ NET_IPV4_ROUTE_GC_INTERVAL=8, ++ NET_IPV4_ROUTE_REDIRECT_LOAD=9, ++ NET_IPV4_ROUTE_REDIRECT_NUMBER=10, ++ NET_IPV4_ROUTE_REDIRECT_SILENCE=11, ++ NET_IPV4_ROUTE_ERROR_COST=12, ++ NET_IPV4_ROUTE_ERROR_BURST=13, ++ NET_IPV4_ROUTE_GC_ELASTICITY=14, ++ NET_IPV4_ROUTE_MTU_EXPIRES=15, ++ NET_IPV4_ROUTE_MIN_PMTU=16, ++ NET_IPV4_ROUTE_MIN_ADVMSS=17, ++ NET_IPV4_ROUTE_SECRET_INTERVAL=18, ++}; ++ ++enum ++{ ++ NET_PROTO_CONF_ALL=-2, ++ NET_PROTO_CONF_DEFAULT=-3 ++ ++ /* And device ifindices ... */ ++}; ++ ++enum ++{ ++ NET_IPV4_CONF_FORWARDING=1, ++ NET_IPV4_CONF_MC_FORWARDING=2, ++ NET_IPV4_CONF_PROXY_ARP=3, ++ NET_IPV4_CONF_ACCEPT_REDIRECTS=4, ++ NET_IPV4_CONF_SECURE_REDIRECTS=5, ++ NET_IPV4_CONF_SEND_REDIRECTS=6, ++ NET_IPV4_CONF_SHARED_MEDIA=7, ++ NET_IPV4_CONF_RP_FILTER=8, ++ NET_IPV4_CONF_ACCEPT_SOURCE_ROUTE=9, ++ NET_IPV4_CONF_BOOTP_RELAY=10, ++ NET_IPV4_CONF_LOG_MARTIANS=11, ++ NET_IPV4_CONF_TAG=12, ++ NET_IPV4_CONF_ARPFILTER=13, ++ NET_IPV4_CONF_MEDIUM_ID=14, ++ NET_IPV4_CONF_FORCE_IGMP_VERSION=17, ++ NET_IPV4_CONF_ARP_ANNOUNCE=18, ++ NET_IPV4_CONF_ARP_IGNORE=19, ++}; ++ ++/* /proc/sys/net/ipv4/netfilter */ ++enum ++{ ++ NET_IPV4_NF_CONNTRACK_MAX=1, ++ NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_SYN_SENT=2, ++ NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_SYN_RECV=3, ++ NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_ESTABLISHED=4, ++ NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_FIN_WAIT=5, ++ NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_CLOSE_WAIT=6, ++ NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_LAST_ACK=7, ++ NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_TIME_WAIT=8, ++ NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_CLOSE=9, ++ NET_IPV4_NF_CONNTRACK_UDP_TIMEOUT=10, ++ NET_IPV4_NF_CONNTRACK_UDP_TIMEOUT_STREAM=11, ++ NET_IPV4_NF_CONNTRACK_ICMP_TIMEOUT=12, ++ NET_IPV4_NF_CONNTRACK_GENERIC_TIMEOUT=13, ++ NET_IPV4_NF_CONNTRACK_BUCKETS=14, ++}; ++ ++/* /proc/sys/net/ipv6 */ ++enum { ++ NET_IPV6_CONF=16, ++ NET_IPV6_NEIGH=17, ++ NET_IPV6_ROUTE=18, ++ NET_IPV6_ICMP=19, ++ NET_IPV6_BINDV6ONLY=20, ++ NET_IPV6_MLD_MAX_MSF=25, ++}; ++ ++enum { ++ NET_IPV6_ROUTE_FLUSH=1, ++ NET_IPV6_ROUTE_GC_THRESH=2, ++ NET_IPV6_ROUTE_MAX_SIZE=3, ++ NET_IPV6_ROUTE_GC_MIN_INTERVAL=4, ++ NET_IPV6_ROUTE_GC_TIMEOUT=5, ++ NET_IPV6_ROUTE_GC_INTERVAL=6, ++ NET_IPV6_ROUTE_GC_ELASTICITY=7, ++ NET_IPV6_ROUTE_MTU_EXPIRES=8, ++ NET_IPV6_ROUTE_MIN_ADVMSS=9 ++}; ++ ++enum { ++ NET_IPV6_FORWARDING=1, ++ NET_IPV6_HOP_LIMIT=2, ++ NET_IPV6_MTU=3, ++ NET_IPV6_ACCEPT_RA=4, ++ NET_IPV6_ACCEPT_REDIRECTS=5, ++ NET_IPV6_AUTOCONF=6, ++ NET_IPV6_DAD_TRANSMITS=7, ++ NET_IPV6_RTR_SOLICITS=8, ++ NET_IPV6_RTR_SOLICIT_INTERVAL=9, ++ NET_IPV6_RTR_SOLICIT_DELAY=10 ++}; ++ ++/* /proc/sys/net/ipv6/icmp */ ++enum { ++ NET_IPV6_ICMP_RATELIMIT=1 ++}; ++ ++/* /proc/sys/net/<protocol>/neigh/<dev> */ ++enum { ++ NET_NEIGH_MCAST_SOLICIT=1, ++ NET_NEIGH_UCAST_SOLICIT=2, ++ NET_NEIGH_APP_SOLICIT=3, ++ NET_NEIGH_RETRANS_TIME=4, ++ NET_NEIGH_REACHABLE_TIME=5, ++ NET_NEIGH_DELAY_PROBE_TIME=6, ++ NET_NEIGH_GC_STALE_TIME=7, ++ NET_NEIGH_UNRES_QLEN=8, ++ NET_NEIGH_PROXY_QLEN=9, ++ NET_NEIGH_ANYCAST_DELAY=10, ++ NET_NEIGH_PROXY_DELAY=11, ++ NET_NEIGH_LOCKTIME=12, ++ NET_NEIGH_GC_INTERVAL=13, ++ NET_NEIGH_GC_THRESH1=14, ++ NET_NEIGH_GC_THRESH2=15, ++ NET_NEIGH_GC_THRESH3=16 ++}; ++ ++/* /proc/sys/net/ipx */ ++enum { ++ NET_IPX_PPROP_BROADCASTING=1, ++ NET_IPX_FORWARDING=2 ++}; ++ ++ ++/* /proc/sys/net/appletalk */ ++enum { ++ NET_ATALK_AARP_EXPIRY_TIME=1, ++ NET_ATALK_AARP_TICK_TIME=2, ++ NET_ATALK_AARP_RETRANSMIT_LIMIT=3, ++ NET_ATALK_AARP_RESOLVE_TIME=4 ++}; ++ ++ ++/* /proc/sys/net/netrom */ ++enum { ++ NET_NETROM_DEFAULT_PATH_QUALITY=1, ++ NET_NETROM_OBSOLESCENCE_COUNT_INITIALISER=2, ++ NET_NETROM_NETWORK_TTL_INITIALISER=3, ++ NET_NETROM_TRANSPORT_TIMEOUT=4, ++ NET_NETROM_TRANSPORT_MAXIMUM_TRIES=5, ++ NET_NETROM_TRANSPORT_ACKNOWLEDGE_DELAY=6, ++ NET_NETROM_TRANSPORT_BUSY_DELAY=7, ++ NET_NETROM_TRANSPORT_REQUESTED_WINDOW_SIZE=8, ++ NET_NETROM_TRANSPORT_NO_ACTIVITY_TIMEOUT=9, ++ NET_NETROM_ROUTING_CONTROL=10, ++ NET_NETROM_LINK_FAILS_COUNT=11 ++}; ++ ++/* /proc/sys/net/ax25 */ ++enum { ++ NET_AX25_IP_DEFAULT_MODE=1, ++ NET_AX25_DEFAULT_MODE=2, ++ NET_AX25_BACKOFF_TYPE=3, ++ NET_AX25_CONNECT_MODE=4, ++ NET_AX25_STANDARD_WINDOW=5, ++ NET_AX25_EXTENDED_WINDOW=6, ++ NET_AX25_T1_TIMEOUT=7, ++ NET_AX25_T2_TIMEOUT=8, ++ NET_AX25_T3_TIMEOUT=9, ++ NET_AX25_IDLE_TIMEOUT=10, ++ NET_AX25_N2=11, ++ NET_AX25_PACLEN=12, ++ NET_AX25_PROTOCOL=13, ++ NET_AX25_DAMA_SLAVE_TIMEOUT=14 ++}; ++ ++/* /proc/sys/net/rose */ ++enum { ++ NET_ROSE_RESTART_REQUEST_TIMEOUT=1, ++ NET_ROSE_CALL_REQUEST_TIMEOUT=2, ++ NET_ROSE_RESET_REQUEST_TIMEOUT=3, ++ NET_ROSE_CLEAR_REQUEST_TIMEOUT=4, ++ NET_ROSE_ACK_HOLD_BACK_TIMEOUT=5, ++ NET_ROSE_ROUTING_CONTROL=6, ++ NET_ROSE_LINK_FAIL_TIMEOUT=7, ++ NET_ROSE_MAX_VCS=8, ++ NET_ROSE_WINDOW_SIZE=9, ++ NET_ROSE_NO_ACTIVITY_TIMEOUT=10 ++}; ++ ++/* /proc/sys/net/x25 */ ++enum { ++ NET_X25_RESTART_REQUEST_TIMEOUT=1, ++ NET_X25_CALL_REQUEST_TIMEOUT=2, ++ NET_X25_RESET_REQUEST_TIMEOUT=3, ++ NET_X25_CLEAR_REQUEST_TIMEOUT=4, ++ NET_X25_ACK_HOLD_BACK_TIMEOUT=5 ++}; ++ ++/* /proc/sys/net/token-ring */ ++enum ++{ ++ NET_TR_RIF_TIMEOUT=1 ++}; ++ ++/* /proc/sys/net/decnet/ */ ++enum { ++ NET_DECNET_NODE_TYPE = 1, ++ NET_DECNET_NODE_ADDRESS = 2, ++ NET_DECNET_NODE_NAME = 3, ++ NET_DECNET_DEFAULT_DEVICE = 4, ++ NET_DECNET_TIME_WAIT = 5, ++ NET_DECNET_DN_COUNT = 6, ++ NET_DECNET_DI_COUNT = 7, ++ NET_DECNET_DR_COUNT = 8, ++ NET_DECNET_DST_GC_INTERVAL = 9, ++ NET_DECNET_CONF = 10, ++ NET_DECNET_NO_FC_MAX_CWND = 11, ++ NET_DECNET_DEBUG_LEVEL = 255 ++}; ++ ++/* /proc/sys/net/sctp */ ++enum { ++ NET_SCTP_RTO_INITIAL = 1, ++ NET_SCTP_RTO_MIN = 2, ++ NET_SCTP_RTO_MAX = 3, ++ NET_SCTP_RTO_ALPHA = 4, ++ NET_SCTP_RTO_BETA = 5, ++ NET_SCTP_VALID_COOKIE_LIFE = 6, ++ NET_SCTP_ASSOCIATION_MAX_RETRANS = 7, ++ NET_SCTP_PATH_MAX_RETRANS = 8, ++ NET_SCTP_MAX_INIT_RETRANSMITS = 9, ++ NET_SCTP_HB_INTERVAL = 10, ++ NET_SCTP_PRESERVE_ENABLE = 11, ++ NET_SCTP_MAX_BURST = 12, ++ NET_SCTP_ADDIP_ENABLE = 13, ++ NET_SCTP_PRSCTP_ENABLE = 14, ++}; ++/* /proc/sys/net/khttpd/ */ ++enum { ++ NET_KHTTPD_DOCROOT = 1, ++ NET_KHTTPD_START = 2, ++ NET_KHTTPD_STOP = 3, ++ NET_KHTTPD_UNLOAD = 4, ++ NET_KHTTPD_CLIENTPORT = 5, ++ NET_KHTTPD_PERMREQ = 6, ++ NET_KHTTPD_PERMFORBID = 7, ++ NET_KHTTPD_LOGGING = 8, ++ NET_KHTTPD_SERVERPORT = 9, ++ NET_KHTTPD_DYNAMICSTRING= 10, ++ NET_KHTTPD_SLOPPYMIME = 11, ++ NET_KHTTPD_THREADS = 12, ++ NET_KHTTPD_MAXCONNECT = 13 ++}; ++ ++/* /proc/sys/net/decnet/conf/<dev> */ ++enum { ++ NET_DECNET_CONF_LOOPBACK = -2, ++ NET_DECNET_CONF_DDCMP = -3, ++ NET_DECNET_CONF_PPP = -4, ++ NET_DECNET_CONF_X25 = -5, ++ NET_DECNET_CONF_GRE = -6, ++ NET_DECNET_CONF_ETHER = -7 ++ ++ /* ... and ifindex of devices */ ++}; ++ ++/* /proc/sys/net/decnet/conf/<dev>/ */ ++enum { ++ NET_DECNET_CONF_DEV_PRIORITY = 1, ++ NET_DECNET_CONF_DEV_T1 = 2, ++ NET_DECNET_CONF_DEV_T2 = 3, ++ NET_DECNET_CONF_DEV_T3 = 4, ++ NET_DECNET_CONF_DEV_FORWARDING = 5, ++ NET_DECNET_CONF_DEV_BLKSIZE = 6, ++ NET_DECNET_CONF_DEV_STATE = 7 ++}; ++ ++/* CTL_PROC names: */ ++ ++/* CTL_FS names: */ ++enum ++{ ++ FS_NRINODE=1, /* int:current number of allocated inodes */ ++ FS_STATINODE=2, ++ FS_MAXINODE=3, /* int:maximum number of inodes that can be allocated */ ++ FS_NRDQUOT=4, /* int:current number of allocated dquots */ ++ /* was FS_MAXDQUOT */ ++ FS_NRFILE=6, /* int:current number of allocated filedescriptors */ ++ FS_MAXFILE=7, /* int:maximum number of filedescriptors that can be allocated */ ++ FS_DENTRY=8, ++ FS_NRSUPER=9, /* int:current number of allocated super_blocks */ ++ FS_MAXSUPER=10, /* int:maximum number of super_blocks that can be allocated */ ++ FS_OVERFLOWUID=11, /* int: overflow UID */ ++ FS_OVERFLOWGID=12, /* int: overflow GID */ ++ FS_LEASES=13, /* int: leases enabled */ ++ FS_DIR_NOTIFY=14, /* int: directory notification enabled */ ++ FS_LEASE_TIME=15, /* int: maximum time to wait for a lease break */ ++ FS_DQSTATS=16, /* dir: disc quota usage statistics and settings */ ++ FS_XFS=17, /* struct: control xfs parameters */ ++}; ++ ++/* /proc/sys/fs/quota/ */ ++enum { ++ FS_DQ_LOOKUPS = 1, ++ FS_DQ_DROPS = 2, ++ FS_DQ_READS = 3, ++ FS_DQ_WRITES = 4, ++ FS_DQ_CACHE_HITS = 5, ++ FS_DQ_ALLOCATED = 6, ++ FS_DQ_FREE = 7, ++ FS_DQ_SYNCS = 8, ++ FS_DQ_WARNINGS = 9, ++}; ++ ++/* CTL_DEBUG names: */ ++ ++/* CTL_DEV names: */ ++enum { ++ DEV_CDROM=1, ++ DEV_HWMON=2, ++ DEV_PARPORT=3, ++ DEV_RAID=4, ++ DEV_MAC_HID=5 ++}; ++ ++/* /proc/sys/dev/cdrom */ ++enum { ++ DEV_CDROM_INFO=1, ++ DEV_CDROM_AUTOCLOSE=2, ++ DEV_CDROM_AUTOEJECT=3, ++ DEV_CDROM_DEBUG=4, ++ DEV_CDROM_LOCK=5, ++ DEV_CDROM_CHECK_MEDIA=6 ++}; ++ ++/* /proc/sys/dev/parport */ ++enum { ++ DEV_PARPORT_DEFAULT=-3 ++}; ++ ++/* /proc/sys/dev/raid */ ++enum { ++ DEV_RAID_SPEED_LIMIT_MIN=1, ++ DEV_RAID_SPEED_LIMIT_MAX=2 ++}; ++ ++/* /proc/sys/dev/parport/default */ ++enum { ++ DEV_PARPORT_DEFAULT_TIMESLICE=1, ++ DEV_PARPORT_DEFAULT_SPINTIME=2 ++}; ++ ++/* /proc/sys/dev/parport/parport n */ ++enum { ++ DEV_PARPORT_SPINTIME=1, ++ DEV_PARPORT_BASE_ADDR=2, ++ DEV_PARPORT_IRQ=3, ++ DEV_PARPORT_DMA=4, ++ DEV_PARPORT_MODES=5, ++ DEV_PARPORT_DEVICES=6, ++ DEV_PARPORT_AUTOPROBE=16 ++}; ++ ++/* /proc/sys/dev/parport/parport n/devices/ */ ++enum { ++ DEV_PARPORT_DEVICES_ACTIVE=-3, ++}; ++ ++/* /proc/sys/dev/parport/parport n/devices/device n */ ++enum { ++ DEV_PARPORT_DEVICE_TIMESLICE=1, ++}; ++ ++/* /proc/sys/dev/mac_hid */ ++enum { ++ DEV_MAC_HID_KEYBOARD_SENDS_LINUX_KEYCODES=1, ++ DEV_MAC_HID_KEYBOARD_LOCK_KEYCODES=2, ++ DEV_MAC_HID_MOUSE_BUTTON_EMULATION=3, ++ DEV_MAC_HID_MOUSE_BUTTON2_KEYCODE=4, ++ DEV_MAC_HID_MOUSE_BUTTON3_KEYCODE=5, ++ DEV_MAC_HID_ADB_MOUSE_SENDS_KEYCODES=6 ++}; ++ ++/* /proc/sys/abi */ ++enum ++{ ++ ABI_DEFHANDLER_COFF=1, /* default handler for coff binaries */ ++ ABI_DEFHANDLER_ELF=2, /* default handler for ELF binaries */ ++ ABI_DEFHANDLER_LCALL7=3,/* default handler for procs using lcall7 */ ++ ABI_DEFHANDLER_LIBCSO=4,/* default handler for an libc.so ELF interp */ ++ ABI_TRACE=5, /* tracing flags */ ++ ABI_FAKE_UTSNAME=6, /* fake target utsname information */ ++}; ++ ++#ifdef __KERNEL__ ++ ++extern asmlinkage long sys_sysctl(struct __sysctl_args *); ++extern void sysctl_init(void); ++ ++typedef struct ctl_table ctl_table; ++ ++typedef int ctl_handler (ctl_table *table, int *name, int nlen, ++ void *oldval, size_t *oldlenp, ++ void *newval, size_t newlen, ++ void **context); ++ ++typedef int proc_handler (ctl_table *ctl, int write, struct file * filp, ++ void *buffer, size_t *lenp); ++ ++extern int proc_dostring(ctl_table *, int, struct file *, ++ void *, size_t *); ++extern int proc_dointvec(ctl_table *, int, struct file *, ++ void *, size_t *); ++extern int proc_dointvec_bset(ctl_table *, int, struct file *, ++ void *, size_t *); ++extern int proc_dointvec_minmax(ctl_table *, int, struct file *, ++ void *, size_t *); ++extern int proc_dointvec_jiffies(ctl_table *, int, struct file *, ++ void *, size_t *); ++extern int proc_doulongvec_minmax(ctl_table *, int, struct file *, ++ void *, size_t *); ++extern int proc_doulongvec_ms_jiffies_minmax(ctl_table *table, int, ++ struct file *, void *, size_t *); ++ ++extern int do_sysctl (int *name, int nlen, ++ void *oldval, size_t *oldlenp, ++ void *newval, size_t newlen); ++ ++extern int do_sysctl_strategy (ctl_table *table, ++ int *name, int nlen, ++ void *oldval, size_t *oldlenp, ++ void *newval, size_t newlen, void ** context); ++ ++extern ctl_handler sysctl_string; ++extern ctl_handler sysctl_intvec; ++extern ctl_handler sysctl_jiffies; ++ ++ ++/* ++ * Register a set of sysctl names by calling register_sysctl_table ++ * with an initialised array of ctl_table's. An entry with zero ++ * ctl_name terminates the table. table->de will be set up by the ++ * registration and need not be initialised in advance. ++ * ++ * sysctl names can be mirrored automatically under /proc/sys. The ++ * procname supplied controls /proc naming. ++ * ++ * The table's mode will be honoured both for sys_sysctl(2) and ++ * proc-fs access. ++ * ++ * Leaf nodes in the sysctl tree will be represented by a single file ++ * under /proc; non-leaf nodes will be represented by directories. A ++ * null procname disables /proc mirroring at this node. ++ * ++ * sysctl(2) can automatically manage read and write requests through ++ * the sysctl table. The data and maxlen fields of the ctl_table ++ * struct enable minimal validation of the values being written to be ++ * performed, and the mode field allows minimal authentication. ++ * ++ * More sophisticated management can be enabled by the provision of a ++ * strategy routine with the table entry. This will be called before ++ * any automatic read or write of the data is performed. ++ * ++ * The strategy routine may return: ++ * <0: Error occurred (error is passed to user process) ++ * 0: OK - proceed with automatic read or write. ++ * >0: OK - read or write has been done by the strategy routine, so ++ * return immediately. ++ * ++ * There must be a proc_handler routine for any terminal nodes ++ * mirrored under /proc/sys (non-terminals are handled by a built-in ++ * directory handler). Several default handlers are available to ++ * cover common cases. ++ */ ++ ++/* A sysctl table is an array of struct ctl_table: */ ++struct ctl_table ++{ ++ int ctl_name; /* Binary ID */ ++ const char *procname; /* Text ID for /proc/sys, or zero */ ++ void *data; ++ int maxlen; ++ mode_t mode; ++ ctl_table *child; ++ proc_handler *proc_handler; /* Callback for text formatting */ ++ ctl_handler *strategy; /* Callback function for all r/w */ ++ struct proc_dir_entry *de; /* /proc control block */ ++ void *extra1; ++ void *extra2; ++}; ++ ++/* struct ctl_table_header is used to maintain dynamic lists of ++ ctl_table trees. */ ++struct ctl_table_header ++{ ++ ctl_table *ctl_table; ++ struct list_head ctl_entry; ++}; ++ ++struct ctl_table_header * register_sysctl_table(ctl_table * table, ++ int insert_at_head); ++void unregister_sysctl_table(struct ctl_table_header * table); ++ ++#else /* __KERNEL__ */ ++ ++#endif /* __KERNEL__ */ ++ ++#endif /* _LINUX_SYSCTL_H */ +diff -Nur linux-mips-cvs/net/8021q/vlan_dev.c linux-ebtables/net/8021q/vlan_dev.c +--- linux-mips-cvs/net/8021q/vlan_dev.c 2004-11-29 18:47:19.000000000 +0100 ++++ linux-ebtables/net/8021q/vlan_dev.c 2005-02-07 05:52:50.000000000 +0100 +@@ -488,6 +488,10 @@ + stats->tx_packets++; /* for statics only */ + stats->tx_bytes += skb->len; + ++ skb->protocol = __constant_htons(ETH_P_8021Q); ++ skb->mac.raw -= VLAN_HLEN; ++ skb->nh.raw -= VLAN_HLEN; ++ + skb->dev = VLAN_DEV_INFO(dev)->real_dev; + dev_queue_xmit(skb); + +diff -Nur linux-mips-cvs/net/Config.in linux-ebtables/net/Config.in +--- linux-mips-cvs/net/Config.in 2005-01-09 20:34:04.000000000 +0100 ++++ linux-ebtables/net/Config.in 2005-02-07 05:52:50.000000000 +0100 +@@ -70,6 +70,9 @@ + source net/decnet/Config.in + fi + dep_tristate '802.1d Ethernet Bridging' CONFIG_BRIDGE $CONFIG_INET ++if [ "$CONFIG_BRIDGE" != "n" -a "$CONFIG_NETFILTER" != "n" ]; then ++ source net/bridge/netfilter/Config.in ++fi + if [ "$CONFIG_EXPERIMENTAL" = "y" ]; then + tristate 'CCITT X.25 Packet Layer (EXPERIMENTAL)' CONFIG_X25 + tristate 'LAPB Data Link Driver (EXPERIMENTAL)' CONFIG_LAPB +diff -Nur linux-mips-cvs/net/Config.in.orig linux-ebtables/net/Config.in.orig +--- linux-mips-cvs/net/Config.in.orig 1970-01-01 01:00:00.000000000 +0100 ++++ linux-ebtables/net/Config.in.orig 2005-01-09 20:34:04.000000000 +0100 +@@ -0,0 +1,107 @@ ++# ++# Network configuration ++# ++mainmenu_option next_comment ++comment 'Networking options' ++tristate 'Packet socket' CONFIG_PACKET ++if [ "$CONFIG_PACKET" != "n" ]; then ++ bool ' Packet socket: mmapped IO' CONFIG_PACKET_MMAP ++fi ++ ++tristate 'Netlink device emulation' CONFIG_NETLINK_DEV ++ ++bool 'Network packet filtering (replaces ipchains)' CONFIG_NETFILTER ++if [ "$CONFIG_NETFILTER" = "y" ]; then ++ bool ' Network packet filtering debugging' CONFIG_NETFILTER_DEBUG ++fi ++bool 'Socket Filtering' CONFIG_FILTER ++tristate 'Unix domain sockets' CONFIG_UNIX ++bool 'TCP/IP networking' CONFIG_INET ++if [ "$CONFIG_INET" = "y" ]; then ++ source net/ipv4/Config.in ++ if [ "$CONFIG_EXPERIMENTAL" = "y" ]; then ++# IPv6 as module will cause a CRASH if you try to unload it ++ tristate ' The IPv6 protocol (EXPERIMENTAL)' CONFIG_IPV6 ++ if [ "$CONFIG_IPV6" != "n" ]; then ++ source net/ipv6/Config.in ++ fi ++ fi ++ if [ "$CONFIG_EXPERIMENTAL" = "y" ]; then ++ source net/khttpd/Config.in ++ fi ++ if [ "$CONFIG_EXPERIMENTAL" = "y" ]; then ++ source net/sctp/Config.in ++ fi ++fi ++if [ "$CONFIG_EXPERIMENTAL" = "y" ]; then ++ tristate 'Asynchronous Transfer Mode (ATM) (EXPERIMENTAL)' CONFIG_ATM ++ if [ "$CONFIG_ATM" = "y" -o "$CONFIG_ATM" = "m" ]; then ++ if [ "$CONFIG_INET" = "y" ]; then ++ dep_tristate ' Classical IP over ATM' CONFIG_ATM_CLIP $CONFIG_ATM ++ if [ "$CONFIG_ATM_CLIP" != "n" ]; then ++ bool ' Do NOT send ICMP if no neighbour' CONFIG_ATM_CLIP_NO_ICMP ++ fi ++ fi ++ dep_tristate ' LAN Emulation (LANE) support' CONFIG_ATM_LANE $CONFIG_ATM ++ if [ "$CONFIG_INET" = "y" -a "$CONFIG_ATM_LANE" != "n" ]; then ++ tristate ' Multi-Protocol Over ATM (MPOA) support' CONFIG_ATM_MPOA ++ fi ++ dep_tristate ' RFC1483/2684 Bridged protocols' CONFIG_ATM_BR2684 $CONFIG_ATM ++ if [ "$CONFIG_ATM_BR2684" != "n" ]; then ++ bool ' Per-VC IP filter kludge' CONFIG_ATM_BR2684_IPFILTER ++ fi ++ fi ++fi ++tristate '802.1Q VLAN Support' CONFIG_VLAN_8021Q ++ ++comment ' ' ++tristate 'The IPX protocol' CONFIG_IPX ++if [ "$CONFIG_IPX" != "n" ]; then ++ source net/ipx/Config.in ++fi ++ ++tristate 'Appletalk protocol support' CONFIG_ATALK ++if [ "$CONFIG_ATALK" != "n" ]; then ++ source drivers/net/appletalk/Config.in ++fi ++ ++tristate 'DECnet Support' CONFIG_DECNET ++if [ "$CONFIG_DECNET" != "n" ]; then ++ source net/decnet/Config.in ++fi ++dep_tristate '802.1d Ethernet Bridging' CONFIG_BRIDGE $CONFIG_INET ++if [ "$CONFIG_EXPERIMENTAL" = "y" ]; then ++ tristate 'CCITT X.25 Packet Layer (EXPERIMENTAL)' CONFIG_X25 ++ tristate 'LAPB Data Link Driver (EXPERIMENTAL)' CONFIG_LAPB ++ bool '802.2 LLC (EXPERIMENTAL)' CONFIG_LLC ++ bool 'Frame Diverter (EXPERIMENTAL)' CONFIG_NET_DIVERT ++# if [ "$CONFIG_LLC" = "y" ]; then ++# bool ' Netbeui (EXPERIMENTAL)' CONFIG_NETBEUI ++# fi ++ if [ "$CONFIG_INET" = "y" ]; then ++ tristate 'Acorn Econet/AUN protocols (EXPERIMENTAL)' CONFIG_ECONET ++ if [ "$CONFIG_ECONET" != "n" ]; then ++ bool ' AUN over UDP' CONFIG_ECONET_AUNUDP ++ bool ' Native Econet' CONFIG_ECONET_NATIVE ++ fi ++ fi ++ tristate 'WAN router' CONFIG_WAN_ROUTER ++ bool 'Fast switching (read help!)' CONFIG_NET_FASTROUTE ++ bool 'Forwarding between high speed interfaces' CONFIG_NET_HW_FLOWCONTROL ++fi ++ ++mainmenu_option next_comment ++comment 'QoS and/or fair queueing' ++bool 'QoS and/or fair queueing' CONFIG_NET_SCHED ++if [ "$CONFIG_NET_SCHED" = "y" ]; then ++ source net/sched/Config.in ++fi ++#bool 'Network code profiler' CONFIG_NET_PROFILE ++endmenu ++ ++mainmenu_option next_comment ++comment 'Network testing' ++dep_tristate 'Packet Generator (USE WITH CAUTION)' CONFIG_NET_PKTGEN $CONFIG_PROC_FS ++endmenu ++ ++endmenu +diff -Nur linux-mips-cvs/net/Makefile linux-ebtables/net/Makefile +--- linux-mips-cvs/net/Makefile 2004-08-14 20:39:04.000000000 +0200 ++++ linux-ebtables/net/Makefile 2005-02-07 05:52:50.000000000 +0100 +@@ -7,7 +7,8 @@ + + O_TARGET := network.o + +-mod-subdirs := ipv4/netfilter ipv6/netfilter ipx irda bluetooth atm netlink sched core sctp 802 ++mod-subdirs := ipv4/netfilter ipv6/netfilter bridge/netfilter ipx irda \ ++ bluetooth atm netlink sched core sctp 802 + export-objs := netsyms.o + + subdir-y := core ethernet +@@ -27,6 +28,12 @@ + endif + endif + ++ifneq ($(CONFIG_BRIDGE),n) ++ifneq ($(CONFIG_BRIDGE),) ++subdir-$(CONFIG_BRIDGE) += bridge/netfilter ++endif ++endif ++ + subdir-$(CONFIG_KHTTPD) += khttpd + subdir-$(CONFIG_PACKET) += packet + subdir-$(CONFIG_NET_SCHED) += sched +diff -Nur linux-mips-cvs/net/bridge/Makefile linux-ebtables/net/bridge/Makefile +--- linux-mips-cvs/net/bridge/Makefile 2001-01-10 18:18:10.000000000 +0100 ++++ linux-ebtables/net/bridge/Makefile 2005-02-07 05:52:50.000000000 +0100 +@@ -7,10 +7,17 @@ + # + # Note 2! The CFLAGS definition is now in the main makefile... + ++export-objs := br.o ++ + O_TARGET := bridge.o + obj-y := br.o br_device.o br_fdb.o br_forward.o br_if.o br_input.o \ + br_ioctl.o br_notify.o br_stp.o br_stp_bpdu.o \ + br_stp_if.o br_stp_timer.o ++ ++ifeq ($(CONFIG_NETFILTER),y) ++obj-y += br_netfilter.o ++endif ++ + obj-m := $(O_TARGET) + + include $(TOPDIR)/Rules.make +diff -Nur linux-mips-cvs/net/bridge/br.c linux-ebtables/net/bridge/br.c +--- linux-mips-cvs/net/bridge/br.c 2004-08-14 20:39:04.000000000 +0200 ++++ linux-ebtables/net/bridge/br.c 2005-02-07 05:52:50.000000000 +0100 +@@ -30,6 +30,8 @@ + #include "../atm/lec.h" + #endif + ++int (*br_should_route_hook) (struct sk_buff **pskb) = NULL; ++ + void br_dec_use_count() + { + MOD_DEC_USE_COUNT; +@@ -44,6 +46,10 @@ + { + printk(KERN_INFO "NET4: Ethernet Bridge 008 for NET4.0\n"); + ++#ifdef CONFIG_NETFILTER ++ if (br_netfilter_init()) ++ return 1; ++#endif + br_handle_frame_hook = br_handle_frame; + br_ioctl_hook = br_ioctl_deviceless_stub; + #if defined(CONFIG_ATM_LANE) || defined(CONFIG_ATM_LANE_MODULE) +@@ -57,6 +63,9 @@ + + static void __exit br_deinit(void) + { ++#ifdef CONFIG_NETFILTER ++ br_netfilter_fini(); ++#endif + unregister_netdevice_notifier(&br_device_notifier); + + rtnl_lock(); +@@ -73,7 +82,7 @@ + #endif + } + +-EXPORT_NO_SYMBOLS; ++EXPORT_SYMBOL(br_should_route_hook); + + module_init(br_init) + module_exit(br_deinit) +diff -Nur linux-mips-cvs/net/bridge/br_forward.c linux-ebtables/net/bridge/br_forward.c +--- linux-mips-cvs/net/bridge/br_forward.c 2003-11-17 02:07:47.000000000 +0100 ++++ linux-ebtables/net/bridge/br_forward.c 2005-02-07 05:52:50.000000000 +0100 +@@ -30,18 +30,21 @@ + return 1; + } + +-static int __dev_queue_push_xmit(struct sk_buff *skb) ++int br_dev_queue_push_xmit(struct sk_buff *skb) + { ++#ifdef CONFIG_NETFILTER ++ nf_bridge_maybe_copy_header(skb); ++#endif + skb_push(skb, ETH_HLEN); + dev_queue_xmit(skb); + + return 0; + } + +-static int __br_forward_finish(struct sk_buff *skb) ++int br_forward_finish(struct sk_buff *skb) + { + NF_HOOK(PF_BRIDGE, NF_BR_POST_ROUTING, skb, NULL, skb->dev, +- __dev_queue_push_xmit); ++ br_dev_queue_push_xmit); + + return 0; + } +@@ -49,8 +52,11 @@ + static void __br_deliver(struct net_bridge_port *to, struct sk_buff *skb) + { + skb->dev = to->dev; ++#ifdef CONFIG_NETFILTER_DEBUG ++ skb->nf_debug = 0; ++#endif + NF_HOOK(PF_BRIDGE, NF_BR_LOCAL_OUT, skb, NULL, skb->dev, +- __br_forward_finish); ++ br_forward_finish); + } + + static void __br_forward(struct net_bridge_port *to, struct sk_buff *skb) +@@ -62,7 +68,7 @@ + skb->ip_summed = CHECKSUM_NONE; + + NF_HOOK(PF_BRIDGE, NF_BR_FORWARD, skb, indev, skb->dev, +- __br_forward_finish); ++ br_forward_finish); + } + + /* called under bridge lock */ +diff -Nur linux-mips-cvs/net/bridge/br_input.c linux-ebtables/net/bridge/br_input.c +--- linux-mips-cvs/net/bridge/br_input.c 2003-08-13 19:19:30.000000000 +0200 ++++ linux-ebtables/net/bridge/br_input.c 2005-02-07 05:52:50.000000000 +0100 +@@ -24,6 +24,9 @@ + + static int br_pass_frame_up_finish(struct sk_buff *skb) + { ++#ifdef CONFIG_NETFILTER_DEBUG ++ skb->nf_debug = 0; ++#endif + netif_rx(skb); + + return 0; +@@ -46,7 +49,7 @@ + br_pass_frame_up_finish); + } + +-static int br_handle_frame_finish(struct sk_buff *skb) ++int br_handle_frame_finish(struct sk_buff *skb) + { + struct net_bridge *br; + unsigned char *dest; +@@ -112,7 +115,7 @@ + return 0; + } + +-void br_handle_frame(struct sk_buff *skb) ++int br_handle_frame(struct sk_buff *skb) + { + struct net_bridge *br; + unsigned char *dest; +@@ -146,26 +149,35 @@ + goto handle_special_frame; + + if (p->state == BR_STATE_FORWARDING) { ++ if (br_should_route_hook && br_should_route_hook(&skb)) { ++ read_unlock(&br->lock); ++ return -1; ++ } ++ ++ if (!memcmp(p->br->dev.dev_addr, dest, ETH_ALEN)) ++ skb->pkt_type = PACKET_HOST; ++ + NF_HOOK(PF_BRIDGE, NF_BR_PRE_ROUTING, skb, skb->dev, NULL, + br_handle_frame_finish); + read_unlock(&br->lock); +- return; ++ return 0; + } + + err: + read_unlock(&br->lock); + err_nolock: + kfree_skb(skb); +- return; ++ return 0; + + handle_special_frame: + if (!dest[5]) { + NF_HOOK(PF_BRIDGE, NF_BR_LOCAL_IN, skb, skb->dev,NULL, + br_stp_handle_bpdu); + read_unlock(&br->lock); +- return; ++ return 0; + } + + read_unlock(&br->lock); + kfree_skb(skb); ++ return 0; + } +diff -Nur linux-mips-cvs/net/bridge/br_netfilter.c linux-ebtables/net/bridge/br_netfilter.c +--- linux-mips-cvs/net/bridge/br_netfilter.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux-ebtables/net/bridge/br_netfilter.c 2005-02-07 05:52:50.000000000 +0100 +@@ -0,0 +1,1103 @@ ++/* ++ * Handle firewalling ++ * Linux ethernet bridge ++ * ++ * Authors: ++ * Lennert Buytenhek <buytenh@gnu.org> ++ * Bart De Schuymer (maintainer) <bdschuym@pandora.be> ++ * ++ * Changes: ++ * Apr 29 2003: physdev module support (bdschuym) ++ * Jun 19 2003: let arptables see bridged ARP traffic (bdschuym) ++ * Oct 06 2003: filter encapsulated IP/ARP VLAN traffic on untagged bridge ++ * (bdschuym) ++ * Aug 28 2004: add IPv6 filtering (bdschuym) ++ * ++ * This program is free software; you can redistribute it and/or ++ * modify it under the terms of the GNU General Public License ++ * as published by the Free Software Foundation; either version ++ * 2 of the License, or (at your option) any later version. ++ * ++ * Lennert dedicates this file to Kerstin Wurdinger. ++ */ ++ ++#include <linux/module.h> ++#include <linux/kernel.h> ++#include <linux/ip.h> ++#include <linux/netdevice.h> ++#include <linux/skbuff.h> ++#include <linux/if_ether.h> ++#include <linux/if_vlan.h> ++#include <linux/netfilter_bridge.h> ++#include <linux/netfilter_ipv4.h> ++#include <linux/netfilter_ipv6.h> ++#include <linux/in_route.h> ++#include <net/ip.h> ++#include <net/ipv6.h> ++#include <asm/uaccess.h> ++#include <asm/checksum.h> ++#include "br_private.h" ++#ifdef CONFIG_SYSCTL ++#include <linux/sysctl.h> ++#endif ++ ++#define skb_origaddr(skb) (((struct bridge_skb_cb *) \ ++ (skb->nf_bridge->data))->daddr.ipv4) ++#define store_orig_dstaddr(skb) (skb_origaddr(skb) = (skb)->nh.iph->daddr) ++#define dnat_took_place(skb) (skb_origaddr(skb) != (skb)->nh.iph->daddr) ++ ++#define has_bridge_parent(device) ((device)->br_port != NULL) ++#define bridge_parent(device) (&((device)->br_port->br->dev)) ++ ++#ifdef CONFIG_SYSCTL ++static struct ctl_table_header *brnf_sysctl_header; ++static int brnf_call_iptables = 1; ++static int brnf_call_ip6tables = 1; ++static int brnf_call_arptables = 1; ++static int brnf_filter_vlan_tagged = 1; ++#else ++#define brnf_filter_vlan_tagged 1 ++#endif ++ ++#define IS_VLAN_IP (skb->protocol == __constant_htons(ETH_P_8021Q) && \ ++ hdr->h_vlan_encapsulated_proto == __constant_htons(ETH_P_IP) && \ ++ brnf_filter_vlan_tagged) ++#define IS_VLAN_IPV6 (skb->protocol == __constant_htons(ETH_P_8021Q) && \ ++ hdr->h_vlan_encapsulated_proto == __constant_htons(ETH_P_IPV6) && \ ++ brnf_filter_vlan_tagged) ++/* ++#define IS_VLAN_ARP (skb->protocol == __constant_htons(ETH_P_8021Q) && \ ++ hdr->h_vlan_encapsulated_proto == __constant_htons(ETH_P_ARP) && \ ++ brnf_filter_vlan_tagged) ++*/ ++ ++/* We need these fake structures to make netfilter happy -- ++ * lots of places assume that skb->dst != NULL, which isn't ++ * all that unreasonable. ++ * ++ * Currently, we fill in the PMTU entry because netfilter ++ * refragmentation needs it, and the rt_flags entry because ++ * ipt_REJECT needs it. Future netfilter modules might ++ * require us to fill additional fields. ++ */ ++static struct net_device __fake_net_device = { ++ .hard_header_len = ETH_HLEN ++}; ++ ++static struct rtable __fake_rtable = { ++ u: { ++ dst: { ++ __refcnt: ATOMIC_INIT(1), ++ dev: &__fake_net_device, ++ pmtu: 1500 ++ } ++ }, ++ ++ rt_flags: 0 ++}; ++ ++ ++/* PF_BRIDGE/PRE_ROUTING *********************************************/ ++/* Undo the changes made for ip6tables PREROUTING and continue the ++ * bridge PRE_ROUTING hook. */ ++static int br_nf_pre_routing_finish_ipv6(struct sk_buff *skb) ++{ ++ struct nf_bridge_info *nf_bridge = skb->nf_bridge; ++ ++#ifdef CONFIG_NETFILTER_DEBUG ++ skb->nf_debug ^= (1 << NF_BR_PRE_ROUTING); ++#endif ++ ++ if (nf_bridge->mask & BRNF_PKT_TYPE) { ++ skb->pkt_type = PACKET_OTHERHOST; ++ nf_bridge->mask ^= BRNF_PKT_TYPE; ++ } ++ nf_bridge->mask ^= BRNF_NF_BRIDGE_PREROUTING; ++ ++ skb->dst = (struct dst_entry *)&__fake_rtable; ++ dst_hold(skb->dst); ++ ++ skb->dev = nf_bridge->physindev; ++ if (skb->protocol == __constant_htons(ETH_P_8021Q)) { ++ skb_push(skb, VLAN_HLEN); ++ skb->nh.raw -= VLAN_HLEN; ++ } ++ NF_HOOK_THRESH(PF_BRIDGE, NF_BR_PRE_ROUTING, skb, skb->dev, NULL, ++ br_handle_frame_finish, 1); ++ ++ return 0; ++} ++ ++static void __br_dnat_complain(void) ++{ ++ static unsigned long last_complaint; ++ ++ if (jiffies - last_complaint >= 5 * HZ) { ++ printk(KERN_WARNING "Performing cross-bridge DNAT requires IP " ++ "forwarding to be enabled\n"); ++ last_complaint = jiffies; ++ } ++} ++ ++ ++/* This requires some explaining. If DNAT has taken place, ++ * we will need to fix up the destination Ethernet address, ++ * and this is a tricky process. ++ * ++ * There are two cases to consider: ++ * 1. The packet was DNAT'ed to a device in the same bridge ++ * port group as it was received on. We can still bridge ++ * the packet. ++ * 2. The packet was DNAT'ed to a different device, either ++ * a non-bridged device or another bridge port group. ++ * The packet will need to be routed. ++ * ++ * The correct way of distinguishing between these two cases is to ++ * call ip_route_input() and to look at skb->dst->dev, which is ++ * changed to the destination device if ip_route_input() succeeds. ++ * ++ * Let us first consider the case that ip_route_input() succeeds: ++ * ++ * If skb->dst->dev equals the logical bridge device the packet ++ * came in on, we can consider this bridging. We then call ++ * skb->dst->output() which will make the packet enter br_nf_local_out() ++ * not much later. In that function it is assured that the iptables ++ * FORWARD chain is traversed for the packet. ++ * ++ * Otherwise, the packet is considered to be routed and we just ++ * change the destination MAC address so that the packet will ++ * later be passed up to the IP stack to be routed. ++ * ++ * Let us now consider the case that ip_route_input() fails: ++ * ++ * After a "echo '0' > /proc/sys/net/ipv4/ip_forward" ip_route_input() ++ * will fail, while __ip_route_output_key() will return success. The source ++ * address for __ip_route_output_key() is set to zero, so __ip_route_output_key ++ * thinks we're handling a locally generated packet and won't care ++ * if IP forwarding is allowed. We send a warning message to the users's ++ * log telling her to put IP forwarding on. ++ * ++ * ip_route_input() will also fail if there is no route available. ++ * In that case we just drop the packet. ++ * ++ * --Lennert, 20020411 ++ * --Bart, 20020416 (updated) ++ * --Bart, 20021007 (updated) ++ */ ++ ++static int br_nf_pre_routing_finish_bridge(struct sk_buff *skb) ++{ ++#ifdef CONFIG_NETFILTER_DEBUG ++ skb->nf_debug |= (1 << NF_BR_PRE_ROUTING) | (1 << NF_BR_FORWARD); ++#endif ++ ++ if (skb->pkt_type == PACKET_OTHERHOST) { ++ skb->pkt_type = PACKET_HOST; ++ skb->nf_bridge->mask |= BRNF_PKT_TYPE; ++ } ++ skb->nf_bridge->mask ^= BRNF_NF_BRIDGE_PREROUTING; ++ ++ skb->dev = bridge_parent(skb->dev); ++ if (skb->protocol == __constant_htons(ETH_P_8021Q)) { ++ skb_pull(skb, VLAN_HLEN); ++ skb->nh.raw += VLAN_HLEN; ++ } ++ skb->dst->output(skb); ++ return 0; ++} ++ ++static int br_nf_pre_routing_finish(struct sk_buff *skb) ++{ ++ struct net_device *dev = skb->dev; ++ struct iphdr *iph = skb->nh.iph; ++ struct nf_bridge_info *nf_bridge = skb->nf_bridge; ++ ++#ifdef CONFIG_NETFILTER_DEBUG ++ skb->nf_debug ^= (1 << NF_BR_PRE_ROUTING); ++#endif ++ ++ if (nf_bridge->mask & BRNF_PKT_TYPE) { ++ skb->pkt_type = PACKET_OTHERHOST; ++ nf_bridge->mask ^= BRNF_PKT_TYPE; ++ } ++ nf_bridge->mask ^= BRNF_NF_BRIDGE_PREROUTING; ++ ++ if (dnat_took_place(skb)) { ++ if (ip_route_input(skb, iph->daddr, iph->saddr, iph->tos, ++ dev)) { ++ struct rtable *rt; ++ ++ if (!ip_route_output(&rt, iph->daddr, 0, iph->tos, 0)) { ++ /* Bridged-and-DNAT'ed traffic doesn't ++ * require ip_forwarding. ++ */ ++ if (((struct dst_entry *)rt)->dev == dev) { ++ skb->dst = (struct dst_entry *)rt; ++ goto bridged_dnat; ++ } ++ __br_dnat_complain(); ++ dst_release((struct dst_entry *)rt); ++ } ++ kfree_skb(skb); ++ return 0; ++ } else { ++ if (skb->dst->dev == dev) { ++bridged_dnat: ++ /* Tell br_nf_local_out this is a ++ * bridged frame ++ */ ++ nf_bridge->mask |= BRNF_BRIDGED_DNAT; ++ skb->dev = nf_bridge->physindev; ++ if (skb->protocol == ++ __constant_htons(ETH_P_8021Q)) { ++ skb_push(skb, VLAN_HLEN); ++ skb->nh.raw -= VLAN_HLEN; ++ } ++ NF_HOOK_THRESH(PF_BRIDGE, NF_BR_PRE_ROUTING, ++ skb, skb->dev, NULL, ++ br_nf_pre_routing_finish_bridge, ++ 1); ++ return 0; ++ } ++ memcpy(skb->mac.ethernet->h_dest, dev->dev_addr, ++ ETH_ALEN); ++ skb->pkt_type = PACKET_HOST; ++ } ++ } else { ++ skb->dst = (struct dst_entry *)&__fake_rtable; ++ dst_hold(skb->dst); ++ } ++ ++ skb->dev = nf_bridge->physindev; ++ if (skb->protocol == __constant_htons(ETH_P_8021Q)) { ++ skb_push(skb, VLAN_HLEN); ++ skb->nh.raw -= VLAN_HLEN; ++ } ++ NF_HOOK_THRESH(PF_BRIDGE, NF_BR_PRE_ROUTING, skb, skb->dev, NULL, ++ br_handle_frame_finish, 1); ++ ++ return 0; ++} ++ ++/* Some common code for IPv4/IPv6 */ ++static void setup_pre_routing(struct sk_buff *skb) ++{ ++ struct nf_bridge_info *nf_bridge = skb->nf_bridge; ++ ++ if (skb->pkt_type == PACKET_OTHERHOST) { ++ skb->pkt_type = PACKET_HOST; ++ nf_bridge->mask |= BRNF_PKT_TYPE; ++ } ++ ++ nf_bridge->mask |= BRNF_NF_BRIDGE_PREROUTING; ++ nf_bridge->physindev = skb->dev; ++ skb->dev = bridge_parent(skb->dev); ++} ++ ++/* We only check the length. A bridge shouldn't do any hop-by-hop stuff anyway */ ++static int check_hbh_len(struct sk_buff *skb) ++{ ++ unsigned char *raw = (u8*)(skb->nh.ipv6h+1); ++ u32 pkt_len; ++ int off = raw - skb->nh.raw; ++ int len = (raw[1]+1)<<3; ++ ++ if ((raw + len) - skb->data > skb_headlen(skb)) ++ goto bad; ++ ++ off += 2; ++ len -= 2; ++ ++ while (len > 0) { ++ int optlen = raw[off+1]+2; ++ ++ switch (skb->nh.raw[off]) { ++ case IPV6_TLV_PAD0: ++ optlen = 1; ++ break; ++ ++ case IPV6_TLV_PADN: ++ break; ++ ++ case IPV6_TLV_JUMBO: ++ if (skb->nh.raw[off+1] != 4 || (off&3) != 2) ++ goto bad; ++ ++ pkt_len = ntohl(*(u32*)(skb->nh.raw+off+2)); ++ ++ if (pkt_len > skb->len - sizeof(struct ipv6hdr)) ++ goto bad; ++ if (pkt_len + sizeof(struct ipv6hdr) < skb->len) { ++ if (__pskb_trim(skb, ++ pkt_len + sizeof(struct ipv6hdr))) ++ goto bad; ++ if (skb->ip_summed == CHECKSUM_HW) ++ skb->ip_summed = CHECKSUM_NONE; ++ } ++ break; ++ default: ++ if (optlen > len) ++ goto bad; ++ break; ++ } ++ off += optlen; ++ len -= optlen; ++ } ++ if (len == 0) ++ return 0; ++bad: ++ return -1; ++ ++} ++ ++/* Replicate the checks that IPv6 does on packet reception and pass the packet ++ * to ip6tables, which doesn't support NAT, so things are fairly simple. */ ++static unsigned int br_nf_pre_routing_ipv6(unsigned int hook, ++ struct sk_buff *skb, const struct net_device *in, ++ const struct net_device *out, int (*okfn)(struct sk_buff *)) ++{ ++ struct ipv6hdr *hdr; ++ u32 pkt_len; ++ struct nf_bridge_info *nf_bridge; ++ ++ if (skb->len < sizeof(struct ipv6hdr)) ++ goto inhdr_error; ++ ++ if (!pskb_may_pull(skb, sizeof(struct ipv6hdr))) ++ goto inhdr_error; ++ ++ hdr = skb->nh.ipv6h; ++ ++ if (hdr->version != 6) ++ goto inhdr_error; ++ ++ pkt_len = ntohs(hdr->payload_len); ++ ++ if (pkt_len || hdr->nexthdr != NEXTHDR_HOP) { ++ if (pkt_len + sizeof(struct ipv6hdr) > skb->len) ++ goto inhdr_error; ++ if (pkt_len + sizeof(struct ipv6hdr) < skb->len) { ++ if (__pskb_trim(skb, pkt_len + sizeof(struct ipv6hdr))) ++ goto inhdr_error; ++ if (skb->ip_summed == CHECKSUM_HW) ++ skb->ip_summed = CHECKSUM_NONE; ++ } ++ } ++ if (hdr->nexthdr == NEXTHDR_HOP && check_hbh_len(skb)) ++ goto inhdr_error; ++ ++#ifdef CONFIG_NETFILTER_DEBUG ++ skb->nf_debug ^= (1 << NF_IP6_PRE_ROUTING); ++#endif ++ if ((nf_bridge = nf_bridge_alloc(skb)) == NULL) ++ return NF_DROP; ++ setup_pre_routing(skb); ++ ++ NF_HOOK(PF_INET6, NF_IP6_PRE_ROUTING, skb, skb->dev, NULL, ++ br_nf_pre_routing_finish_ipv6); ++ ++ return NF_STOLEN; ++ ++inhdr_error: ++ return NF_DROP; ++} ++ ++/* Direct IPv6 traffic to br_nf_pre_routing_ipv6. ++ * Replicate the checks that IPv4 does on packet reception. ++ * Set skb->dev to the bridge device (i.e. parent of the ++ * receiving device) to make netfilter happy, the REDIRECT ++ * target in particular. Save the original destination IP ++ * address to be able to detect DNAT afterwards. ++ */ ++static unsigned int br_nf_pre_routing(unsigned int hook, struct sk_buff **pskb, ++ const struct net_device *in, const struct net_device *out, ++ int (*okfn)(struct sk_buff *)) ++{ ++ struct iphdr *iph; ++ __u32 len; ++ struct sk_buff *skb = *pskb; ++ struct nf_bridge_info *nf_bridge; ++ struct vlan_ethhdr *hdr = (struct vlan_ethhdr *) ++ ((*pskb)->mac.ethernet); ++ ++ if (skb->protocol == __constant_htons(ETH_P_IPV6) || IS_VLAN_IPV6) { ++#ifdef CONFIG_SYSCTL ++ if (!brnf_call_ip6tables) ++ return NF_ACCEPT; ++#endif ++ if ((skb = skb_share_check(*pskb, GFP_ATOMIC)) == NULL) ++ goto out; ++ ++ if (skb->protocol == __constant_htons(ETH_P_8021Q)) { ++ skb_pull(skb, VLAN_HLEN); ++ (skb)->nh.raw += VLAN_HLEN; ++ } ++ return br_nf_pre_routing_ipv6(hook, skb, in, out, okfn); ++ } ++ ++#ifdef CONFIG_SYSCTL ++ if (!brnf_call_iptables) ++ return NF_ACCEPT; ++#endif ++ ++ if (skb->protocol != __constant_htons(ETH_P_IP) && !IS_VLAN_IP) ++ return NF_ACCEPT; ++ if ((skb = skb_share_check(*pskb, GFP_ATOMIC)) == NULL) ++ goto out; ++ ++ if (skb->protocol == __constant_htons(ETH_P_8021Q)) { ++ skb_pull(skb, VLAN_HLEN); ++ (skb)->nh.raw += VLAN_HLEN; ++ } ++ ++ if (!pskb_may_pull(skb, sizeof(struct iphdr))) ++ goto inhdr_error; ++ ++ iph = skb->nh.iph; ++ if (iph->ihl < 5 || iph->version != 4) ++ goto inhdr_error; ++ ++ if (!pskb_may_pull(skb, 4*iph->ihl)) ++ goto inhdr_error; ++ ++ iph = skb->nh.iph; ++ if (ip_fast_csum((__u8 *)iph, iph->ihl) != 0) ++ goto inhdr_error; ++ ++ len = ntohs(iph->tot_len); ++ if (skb->len < len || len < 4*iph->ihl) ++ goto inhdr_error; ++ ++ if (skb->len > len) { ++ __pskb_trim(skb, len); ++ if (skb->ip_summed == CHECKSUM_HW) ++ skb->ip_summed = CHECKSUM_NONE; ++ } ++ ++#ifdef CONFIG_NETFILTER_DEBUG ++ skb->nf_debug ^= (1 << NF_IP_PRE_ROUTING); ++#endif ++ if ((nf_bridge = nf_bridge_alloc(skb)) == NULL) ++ return NF_DROP; ++ ++ setup_pre_routing(skb); ++ store_orig_dstaddr(skb); ++ ++ NF_HOOK(PF_INET, NF_IP_PRE_ROUTING, skb, skb->dev, NULL, ++ br_nf_pre_routing_finish); ++ ++ return NF_STOLEN; ++ ++inhdr_error: ++// IP_INC_STATS_BH(IpInHdrErrors); ++out: ++ return NF_DROP; ++} ++ ++ ++/* PF_BRIDGE/LOCAL_IN ************************************************/ ++/* The packet is locally destined, which requires a real ++ * dst_entry, so detach the fake one. On the way up, the ++ * packet would pass through PRE_ROUTING again (which already ++ * took place when the packet entered the bridge), but we ++ * register an IPv4 PRE_ROUTING 'sabotage' hook that will ++ * prevent this from happening. ++ */ ++static unsigned int br_nf_local_in(unsigned int hook, struct sk_buff **pskb, ++ const struct net_device *in, const struct net_device *out, ++ int (*okfn)(struct sk_buff *)) ++{ ++ struct sk_buff *skb = *pskb; ++ ++ if (skb->dst == (struct dst_entry *)&__fake_rtable) { ++ dst_release(skb->dst); ++ skb->dst = NULL; ++ } ++ ++ return NF_ACCEPT; ++} ++ ++/* PF_BRIDGE/FORWARD *************************************************/ ++static int br_nf_forward_finish(struct sk_buff *skb) ++{ ++ struct nf_bridge_info *nf_bridge = skb->nf_bridge; ++ struct net_device *in; ++/* struct vlan_ethhdr *hdr = (struct vlan_ethhdr *)(skb->mac.ethernet);*/ ++ ++#ifdef CONFIG_NETFILTER_DEBUG ++ skb->nf_debug ^= (1 << NF_BR_FORWARD); ++#endif ++ ++/* if (skb->protocol != __constant_htons(ETH_P_ARP) && !IS_VLAN_ARP) {*/ ++ in = nf_bridge->physindev; ++ if (nf_bridge->mask & BRNF_PKT_TYPE) { ++ skb->pkt_type = PACKET_OTHERHOST; ++ nf_bridge->mask ^= BRNF_PKT_TYPE; ++ } ++/* } else { ++ in = *((struct net_device **)(skb->cb)); ++ }*/ ++ if (skb->protocol == __constant_htons(ETH_P_8021Q)) { ++ skb_push(skb, VLAN_HLEN); ++ skb->nh.raw -= VLAN_HLEN; ++ } ++ NF_HOOK_THRESH(PF_BRIDGE, NF_BR_FORWARD, skb, in, ++ skb->dev, br_forward_finish, 1); ++ return 0; ++} ++ ++/* This is the 'purely bridged' case. For IP, we pass the packet to ++ * netfilter with indev and outdev set to the bridge device, ++ * but we are still able to filter on the 'real' indev/outdev ++ * because of the ipt_physdev.c module. For ARP, indev and outdev are the ++ * bridge ports. ++ */ ++static unsigned int br_nf_forward_ip(unsigned int hook, struct sk_buff **pskb, ++ const struct net_device *in, const struct net_device *out, ++ int (*okfn)(struct sk_buff *)) ++{ ++ struct sk_buff *skb = *pskb; ++ struct nf_bridge_info *nf_bridge; ++ struct vlan_ethhdr *hdr = (struct vlan_ethhdr *)(skb->mac.ethernet); ++ int pf; ++ ++ if (!skb->nf_bridge) ++ return NF_ACCEPT; ++ ++ if (skb->protocol == __constant_htons(ETH_P_IP) || IS_VLAN_IP) ++ pf = PF_INET; ++ else ++ pf = PF_INET6; ++ ++ if (skb->protocol == __constant_htons(ETH_P_8021Q)) { ++ skb_pull(*pskb, VLAN_HLEN); ++ (*pskb)->nh.raw += VLAN_HLEN; ++ } ++ ++#ifdef CONFIG_NETFILTER_DEBUG ++ skb->nf_debug ^= (1 << NF_BR_FORWARD); ++#endif ++ nf_bridge = skb->nf_bridge; ++ if (skb->pkt_type == PACKET_OTHERHOST) { ++ skb->pkt_type = PACKET_HOST; ++ nf_bridge->mask |= BRNF_PKT_TYPE; ++ } ++ ++ /* The physdev module checks on this */ ++ nf_bridge->mask |= BRNF_BRIDGED; ++ nf_bridge->physoutdev = skb->dev; ++ ++ NF_HOOK(pf, NF_IP_FORWARD, skb, bridge_parent(in), ++ bridge_parent(out), br_nf_forward_finish); ++ ++ return NF_STOLEN; ++} ++ ++/* ++static unsigned int br_nf_forward_arp(unsigned int hook, struct sk_buff **pskb, ++ const struct net_device *in, const struct net_device *out, ++ int (*okfn)(struct sk_buff *)) ++{ ++ struct sk_buff *skb = *pskb; ++ struct vlan_ethhdr *hdr = (struct vlan_ethhdr *)(skb->mac.ethernet); ++ struct net_device **d = (struct net_device **)(skb->cb); ++ ++ if (!brnf_call_arptables) ++ return NF_ACCEPT; ++ ++ if (skb->protocol != __constant_htons(ETH_P_ARP)) { ++ if (!IS_VLAN_ARP) ++ return NF_ACCEPT; ++ skb_pull(*pskb, VLAN_HLEN); ++ (*pskb)->nh.raw += VLAN_HLEN; ++ } ++ ++#ifdef CONFIG_NETFILTER_DEBUG ++ skb->nf_debug ^= (1 << NF_BR_FORWARD); ++#endif ++ ++ if (skb->nh.arph->ar_pln != 4) { ++ if (IS_VLAN_ARP) { ++ skb_push(*pskb, VLAN_HLEN); ++ (*pskb)->nh.raw -= VLAN_HLEN; ++ } ++ return NF_ACCEPT; ++ } ++ *d = (struct net_device *)in; ++ NF_HOOK(NF_ARP, NF_ARP_FORWARD, skb, (struct net_device *)in, ++ (struct net_device *)out, br_nf_forward_finish); ++ ++ return NF_STOLEN; ++} ++*/ ++ ++/* PF_BRIDGE/LOCAL_OUT ***********************************************/ ++static int br_nf_local_out_finish(struct sk_buff *skb) ++{ ++#ifdef CONFIG_NETFILTER_DEBUG ++ skb->nf_debug &= ~(1 << NF_BR_LOCAL_OUT); ++#endif ++ if (skb->protocol == __constant_htons(ETH_P_8021Q)) { ++ skb_push(skb, VLAN_HLEN); ++ skb->nh.raw -= VLAN_HLEN; ++ } ++ ++ NF_HOOK_THRESH(PF_BRIDGE, NF_BR_LOCAL_OUT, skb, NULL, skb->dev, ++ br_forward_finish, NF_BR_PRI_FIRST + 1); ++ ++ return 0; ++} ++ ++ ++/* This function sees both locally originated IP packets and forwarded ++ * IP packets (in both cases the destination device is a bridge ++ * device). It also sees bridged-and-DNAT'ed packets. ++ * To be able to filter on the physical bridge devices (with the ipt_physdev.c ++ * module), we steal packets destined to a bridge device away from the ++ * PF_INET/FORWARD and PF_INET/OUTPUT hook functions, and give them back later, ++ * when we have determined the real output device. This is done in here. ++ * ++ * If (nf_bridge->mask & BRNF_BRIDGED_DNAT) then the packet is bridged ++ * and we fake the PF_BRIDGE/FORWARD hook. The function br_nf_forward() ++ * will then fake the PF_INET/FORWARD hook. br_nf_local_out() has priority ++ * NF_BR_PRI_FIRST, so no relevant PF_BRIDGE/INPUT functions have been nor ++ * will be executed. ++ * Otherwise, if nf_bridge->physindev is NULL, the bridge-nf code never touched ++ * this packet before, and so the packet was locally originated. We fake ++ * the PF_INET/LOCAL_OUT hook. ++ * Finally, if nf_bridge->physindev isn't NULL, then the packet was IP routed, ++ * so we fake the PF_INET/FORWARD hook. ipv4_sabotage_out() makes sure ++ * even routed packets that didn't arrive on a bridge interface have their ++ * nf_bridge->physindev set. ++ */ ++ ++static unsigned int br_nf_local_out(unsigned int hook, struct sk_buff **pskb, ++ const struct net_device *in, const struct net_device *out, ++ int (*okfn)(struct sk_buff *)) ++{ ++ struct net_device *realindev, *realoutdev; ++ struct sk_buff *skb = *pskb; ++ struct nf_bridge_info *nf_bridge; ++ struct vlan_ethhdr *hdr = (struct vlan_ethhdr *)(skb->mac.ethernet); ++ int pf; ++ ++ if (!skb->nf_bridge) ++ return NF_ACCEPT; ++ ++ if (skb->protocol == __constant_htons(ETH_P_IP) || IS_VLAN_IP) ++ pf = PF_INET; ++ else ++ pf = PF_INET6; ++ ++#ifdef CONFIG_NETFILTER_DEBUG ++ /* Sometimes we get packets with NULL ->dst here (for example, ++ * running a dhcp client daemon triggers this). This should now ++ * be fixed, but let's keep the check around. */ ++ if (skb->dst == NULL) { ++ printk(KERN_CRIT "br_netfilter: skb->dst == NULL."); ++ return NF_ACCEPT; ++ } ++#endif ++ ++ nf_bridge = skb->nf_bridge; ++ nf_bridge->physoutdev = skb->dev; ++ realindev = nf_bridge->physindev; ++ ++ /* Bridged, take PF_BRIDGE/FORWARD. ++ * (see big note in front of br_nf_pre_routing_finish) ++ */ ++ if (nf_bridge->mask & BRNF_BRIDGED_DNAT) { ++ if (nf_bridge->mask & BRNF_PKT_TYPE) { ++ skb->pkt_type = PACKET_OTHERHOST; ++ nf_bridge->mask ^= BRNF_PKT_TYPE; ++ } ++ if (skb->protocol == __constant_htons(ETH_P_8021Q)) { ++ skb_push(skb, VLAN_HLEN); ++ skb->nh.raw -= VLAN_HLEN; ++ } ++ ++ NF_HOOK(PF_BRIDGE, NF_BR_FORWARD, skb, realindev, ++ skb->dev, br_forward_finish); ++ goto out; ++ } ++ realoutdev = bridge_parent(skb->dev); ++ ++#if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE) ++ /* iptables should match -o br0.x */ ++ if (nf_bridge->netoutdev) ++ realoutdev = nf_bridge->netoutdev; ++#endif ++ if (skb->protocol == __constant_htons(ETH_P_8021Q)) { ++ skb_pull(skb, VLAN_HLEN); ++ (*pskb)->nh.raw += VLAN_HLEN; ++ } ++ /* IP forwarded traffic has a physindev, locally ++ * generated traffic hasn't. ++ */ ++ if (realindev != NULL) { ++ if (((nf_bridge->mask & BRNF_DONT_TAKE_PARENT) == 0) && ++ has_bridge_parent(realindev)) ++ realindev = bridge_parent(realindev); ++ NF_HOOK_THRESH(pf, NF_IP_FORWARD, skb, realindev, ++ realoutdev, okfn, ++ NF_IP_PRI_BRIDGE_SABOTAGE_FORWARD + 1); ++ } else { ++#ifdef CONFIG_NETFILTER_DEBUG ++ skb->nf_debug ^= (1 << NF_IP_LOCAL_OUT); ++#endif ++ ++ NF_HOOK_THRESH(pf, NF_IP_LOCAL_OUT, skb, realindev, ++ realoutdev, okfn, ++ NF_IP_PRI_BRIDGE_SABOTAGE_LOCAL_OUT + 1); ++ } ++ ++out: ++ return NF_STOLEN; ++} ++ ++ ++/* PF_BRIDGE/POST_ROUTING ********************************************/ ++static unsigned int br_nf_post_routing(unsigned int hook, struct sk_buff **pskb, ++ const struct net_device *in, const struct net_device *out, ++ int (*okfn)(struct sk_buff *)) ++{ ++ struct sk_buff *skb = *pskb; ++ struct nf_bridge_info *nf_bridge = (*pskb)->nf_bridge; ++ struct vlan_ethhdr *hdr = (struct vlan_ethhdr *)(skb->mac.ethernet); ++ struct net_device *realoutdev = bridge_parent(skb->dev); ++ int pf; ++ ++#ifdef CONFIG_NETFILTER_DEBUG ++ /* Be very paranoid. This probably won't happen anymore, but let's ++ * keep the check just to be sure... */ ++ if (skb->mac.raw < skb->head || skb->mac.raw + ETH_HLEN > skb->data) { ++ printk(KERN_CRIT "br_netfilter: Argh!! br_nf_post_routing: " ++ "bad mac.raw pointer."); ++ goto print_error; ++ } ++#endif ++ ++ if (!nf_bridge) ++ return NF_ACCEPT; ++ ++ if (skb->protocol == __constant_htons(ETH_P_IP) || IS_VLAN_IP) ++ pf = PF_INET; ++ else ++ pf = PF_INET6; ++ ++ /* Sometimes we get packets with NULL ->dst here (for example, ++ * running a dhcp client daemon triggers this). ++ */ ++ if (skb->dst == NULL) ++ return NF_ACCEPT; ++ ++#ifdef CONFIG_NETFILTER_DEBUG ++ /* Sometimes we get packets with NULL ->dst here (for example, ++ * running a dhcp client daemon triggers this). This should now ++ * be fixed, but let's keep the check around. ++ */ ++ if (skb->dst == NULL) { ++ printk(KERN_CRIT "br_netfilter: skb->dst == NULL."); ++ goto print_error; ++ } ++ ++ skb->nf_debug ^= (1 << NF_IP_POST_ROUTING); ++#endif ++ ++ /* We assume any code from br_dev_queue_push_xmit onwards doesn't care ++ * about the value of skb->pkt_type. ++ */ ++ if (skb->pkt_type == PACKET_OTHERHOST) { ++ skb->pkt_type = PACKET_HOST; ++ nf_bridge->mask |= BRNF_PKT_TYPE; ++ } ++ ++ if (skb->protocol == __constant_htons(ETH_P_8021Q)) { ++ skb_pull(skb, VLAN_HLEN); ++ skb->nh.raw += VLAN_HLEN; ++ } ++ ++ nf_bridge_save_header(skb); ++ ++#if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE) ++ if (nf_bridge->netoutdev) ++ realoutdev = nf_bridge->netoutdev; ++#endif ++ NF_HOOK(pf, NF_IP_POST_ROUTING, skb, NULL, ++ realoutdev, br_dev_queue_push_xmit); ++ ++ return NF_STOLEN; ++ ++#ifdef CONFIG_NETFILTER_DEBUG ++print_error: ++ if (skb->dev != NULL) { ++ printk("[%s]", skb->dev->name); ++ if (has_bridge_parent(skb->dev)) ++ printk("[%s]", bridge_parent(skb->dev)->name); ++ } ++ printk(" head:%p, raw:%p, data:%p\n", skb->head, skb->mac.raw, ++ skb->data); ++ return NF_ACCEPT; ++#endif ++} ++ ++ ++/* IPv4/SABOTAGE *****************************************************/ ++ ++/* Don't hand locally destined packets to PF_INET/PRE_ROUTING ++ * for the second time. ++ */ ++static unsigned int ip_sabotage_in(unsigned int hook, struct sk_buff **pskb, ++ const struct net_device *in, const struct net_device *out, ++ int (*okfn)(struct sk_buff *)) ++{ ++ if ((*pskb)->nf_bridge && ++ !((*pskb)->nf_bridge->mask & BRNF_NF_BRIDGE_PREROUTING)) { ++ okfn(*pskb); ++ return NF_STOLEN; ++ } ++ ++ return NF_ACCEPT; ++} ++ ++/* Postpone execution of PF_INET/FORWARD, PF_INET/LOCAL_OUT ++ * and PF_INET/POST_ROUTING until we have done the forwarding ++ * decision in the bridge code and have determined skb->physoutdev. ++ */ ++static unsigned int ip_sabotage_out(unsigned int hook, struct sk_buff **pskb, ++ const struct net_device *in, const struct net_device *out, ++ int (*okfn)(struct sk_buff *)) ++{ ++ struct sk_buff *skb = *pskb; ++ ++ if ((out->hard_start_xmit == br_dev_xmit && ++ okfn != br_nf_forward_finish && ++ okfn != br_nf_local_out_finish && ++ okfn != br_dev_queue_push_xmit) ++#if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE) ++ || ((out->priv_flags & IFF_802_1Q_VLAN) && ++ VLAN_DEV_INFO(out)->real_dev->hard_start_xmit == br_dev_xmit) ++#endif ++ ) { ++ struct nf_bridge_info *nf_bridge; ++ ++ if (!skb->nf_bridge) { ++#ifdef CONFIG_SYSCTL ++ /* This code is executed while in the IP(v6) stack, ++ the version should be 4 or 6. We can't use ++ skb->protocol because that isn't set on ++ PF_INET(6)/LOCAL_OUT. */ ++ struct iphdr *ip = skb->nh.iph; ++ ++ if (ip->version == 4 && !brnf_call_iptables) ++ return NF_ACCEPT; ++ else if (ip->version == 6 && !brnf_call_ip6tables) ++ return NF_ACCEPT; ++#endif ++ if (hook == NF_IP_POST_ROUTING) ++ return NF_ACCEPT; ++ if (!nf_bridge_alloc(skb)) ++ return NF_DROP; ++ } ++ ++ nf_bridge = skb->nf_bridge; ++ ++ /* This frame will arrive on PF_BRIDGE/LOCAL_OUT and we ++ * will need the indev then. For a brouter, the real indev ++ * can be a bridge port, so we make sure br_nf_local_out() ++ * doesn't use the bridge parent of the indev by using ++ * the BRNF_DONT_TAKE_PARENT mask. ++ */ ++ if (hook == NF_IP_FORWARD && nf_bridge->physindev == NULL) { ++ nf_bridge->mask &= BRNF_DONT_TAKE_PARENT; ++ nf_bridge->physindev = (struct net_device *)in; ++ } ++#if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE) ++ /* the iptables outdev is br0.x, not br0 */ ++ if (out->priv_flags & IFF_802_1Q_VLAN) ++ nf_bridge->netoutdev = (struct net_device *)out; ++#endif ++ okfn(skb); ++ return NF_STOLEN; ++ } ++ ++ return NF_ACCEPT; ++} ++ ++/* For br_nf_local_out we need (prio = NF_BR_PRI_FIRST), to insure that innocent ++ * PF_BRIDGE/NF_BR_LOCAL_OUT functions don't get bridged traffic as input. ++ * For br_nf_post_routing, we need (prio = NF_BR_PRI_LAST), because ++ * ip_refrag() can return NF_STOLEN. ++ */ ++static struct nf_hook_ops br_nf_ops[] = { ++ { .hook = br_nf_pre_routing, ++ .pf = PF_BRIDGE, ++ .hooknum = NF_BR_PRE_ROUTING, ++ .priority = NF_BR_PRI_BRNF, }, ++ { .hook = br_nf_local_in, ++ .pf = PF_BRIDGE, ++ .hooknum = NF_BR_LOCAL_IN, ++ .priority = NF_BR_PRI_BRNF, }, ++ { .hook = br_nf_forward_ip, ++ .pf = PF_BRIDGE, ++ .hooknum = NF_BR_FORWARD, ++ .priority = NF_BR_PRI_BRNF /*- 1*/, }, ++/* { .hook = br_nf_forward_arp, ++ .pf = PF_BRIDGE, ++ .hooknum = NF_BR_FORWARD, ++ .priority = NF_BR_PRI_BRNF, },*/ ++ { .hook = br_nf_local_out, ++ .pf = PF_BRIDGE, ++ .hooknum = NF_BR_LOCAL_OUT, ++ .priority = NF_BR_PRI_FIRST, }, ++ { .hook = br_nf_post_routing, ++ .pf = PF_BRIDGE, ++ .hooknum = NF_BR_POST_ROUTING, ++ .priority = NF_BR_PRI_LAST, }, ++ { .hook = ip_sabotage_in, ++ .pf = PF_INET, ++ .hooknum = NF_IP_PRE_ROUTING, ++ .priority = NF_IP_PRI_FIRST, }, ++ { .hook = ip_sabotage_in, ++ .pf = PF_INET6, ++ .hooknum = NF_IP6_PRE_ROUTING, ++ .priority = NF_IP6_PRI_FIRST, }, ++ { .hook = ip_sabotage_out, ++ .pf = PF_INET, ++ .hooknum = NF_IP_FORWARD, ++ .priority = NF_IP_PRI_BRIDGE_SABOTAGE_FORWARD, }, ++ { .hook = ip_sabotage_out, ++ .pf = PF_INET6, ++ .hooknum = NF_IP6_FORWARD, ++ .priority = NF_IP6_PRI_BRIDGE_SABOTAGE_FORWARD, }, ++ { .hook = ip_sabotage_out, ++ .pf = PF_INET, ++ .hooknum = NF_IP_LOCAL_OUT, ++ .priority = NF_IP_PRI_BRIDGE_SABOTAGE_LOCAL_OUT, }, ++ { .hook = ip_sabotage_out, ++ .pf = PF_INET6, ++ .hooknum = NF_IP6_LOCAL_OUT, ++ .priority = NF_IP6_PRI_BRIDGE_SABOTAGE_LOCAL_OUT, }, ++ { .hook = ip_sabotage_out, ++ .pf = PF_INET, ++ .hooknum = NF_IP_POST_ROUTING, ++ .priority = NF_IP_PRI_FIRST, }, ++ { .hook = ip_sabotage_out, ++ .pf = PF_INET6, ++ .hooknum = NF_IP6_POST_ROUTING, ++ .priority = NF_IP6_PRI_FIRST, }, ++}; ++ ++#ifdef CONFIG_SYSCTL ++static ++int brnf_sysctl_call_tables(ctl_table *ctl, int write, struct file * filp, ++ void *buffer, size_t *lenp) ++{ ++ int ret; ++ ++ ret = proc_dointvec(ctl, write, filp, buffer, lenp); ++ ++ if (write && *(int *)(ctl->data)) ++ *(int *)(ctl->data) = 1; ++ return ret; ++} ++ ++static ctl_table brnf_table[] = { ++ { ++ .ctl_name = NET_BRIDGE_NF_CALL_ARPTABLES, ++ .procname = "bridge-nf-call-arptables", ++ .data = &brnf_call_arptables, ++ .maxlen = sizeof(int), ++ .mode = 0644, ++ .proc_handler = &brnf_sysctl_call_tables, ++ }, ++ { ++ .ctl_name = NET_BRIDGE_NF_CALL_IPTABLES, ++ .procname = "bridge-nf-call-iptables", ++ .data = &brnf_call_iptables, ++ .maxlen = sizeof(int), ++ .mode = 0644, ++ .proc_handler = &brnf_sysctl_call_tables, ++ }, ++ { ++ .ctl_name = NET_BRIDGE_NF_CALL_IP6TABLES, ++ .procname = "bridge-nf-call-ip6tables", ++ .data = &brnf_call_ip6tables, ++ .maxlen = sizeof(int), ++ .mode = 0644, ++ .proc_handler = &brnf_sysctl_call_tables, ++ }, ++ { ++ .ctl_name = NET_BRIDGE_NF_FILTER_VLAN_TAGGED, ++ .procname = "bridge-nf-filter-vlan-tagged", ++ .data = &brnf_filter_vlan_tagged, ++ .maxlen = sizeof(int), ++ .mode = 0644, ++ .proc_handler = &brnf_sysctl_call_tables, ++ }, ++ { .ctl_name = 0 } ++}; ++ ++static ctl_table brnf_bridge_table[] = { ++ { ++ .ctl_name = NET_BRIDGE, ++ .procname = "bridge", ++ .mode = 0555, ++ .child = brnf_table, ++ }, ++ { .ctl_name = 0 } ++}; ++ ++static ctl_table brnf_net_table[] = { ++ { ++ .ctl_name = CTL_NET, ++ .procname = "net", ++ .mode = 0555, ++ .child = brnf_bridge_table, ++ }, ++ { .ctl_name = 0 } ++}; ++#endif ++ ++int br_netfilter_init(void) ++{ ++ int i; ++ ++ for (i = 0; i < ARRAY_SIZE(br_nf_ops); i++) { ++ int ret; ++ ++ if ((ret = nf_register_hook(&br_nf_ops[i])) >= 0) ++ continue; ++ ++ while (i--) ++ nf_unregister_hook(&br_nf_ops[i]); ++ ++ return ret; ++ } ++ ++#ifdef CONFIG_SYSCTL ++ brnf_sysctl_header = register_sysctl_table(brnf_net_table, 0); ++ if (brnf_sysctl_header == NULL) { ++ printk(KERN_WARNING "br_netfilter: can't register to sysctl.\n"); ++ for (i = 0; i < ARRAY_SIZE(br_nf_ops); i++) ++ nf_unregister_hook(&br_nf_ops[i]); ++ return -EFAULT; ++ } ++#endif ++ ++ printk(KERN_NOTICE "Bridge firewalling registered\n"); ++ ++ return 0; ++} ++ ++void br_netfilter_fini(void) ++{ ++ int i; ++ ++ for (i = ARRAY_SIZE(br_nf_ops) - 1; i >= 0; i--) ++ nf_unregister_hook(&br_nf_ops[i]); ++#ifdef CONFIG_SYSCTL ++ unregister_sysctl_table(brnf_sysctl_header); ++#endif ++ ++} +diff -Nur linux-mips-cvs/net/bridge/br_private.h linux-ebtables/net/bridge/br_private.h +--- linux-mips-cvs/net/bridge/br_private.h 2004-08-14 20:39:04.000000000 +0200 ++++ linux-ebtables/net/bridge/br_private.h 2005-02-07 05:52:50.000000000 +0100 +@@ -143,8 +143,10 @@ + /* br_forward.c */ + extern void br_deliver(struct net_bridge_port *to, + struct sk_buff *skb); ++extern int br_dev_queue_push_xmit(struct sk_buff *skb); + extern void br_forward(struct net_bridge_port *to, + struct sk_buff *skb); ++extern int br_forward_finish(struct sk_buff *skb); + extern void br_flood_deliver(struct net_bridge *br, + struct sk_buff *skb, + int clone); +@@ -165,7 +167,8 @@ + int *ifindices); + + /* br_input.c */ +-extern void br_handle_frame(struct sk_buff *skb); ++extern int br_handle_frame_finish(struct sk_buff *skb); ++extern int br_handle_frame(struct sk_buff *skb); + + /* br_ioctl.c */ + extern int br_ioctl(struct net_bridge *br, +@@ -175,6 +178,10 @@ + unsigned long arg2); + extern int br_ioctl_deviceless_stub(unsigned long arg); + ++/* br_netfilter.c */ ++extern int br_netfilter_init(void); ++extern void br_netfilter_fini(void); ++ + /* br_stp.c */ + extern int br_is_root_bridge(struct net_bridge *br); + extern struct net_bridge_port *br_get_port(struct net_bridge *br, +diff -Nur linux-mips-cvs/net/bridge/netfilter/Config.in linux-ebtables/net/bridge/netfilter/Config.in +--- linux-mips-cvs/net/bridge/netfilter/Config.in 1970-01-01 01:00:00.000000000 +0100 ++++ linux-ebtables/net/bridge/netfilter/Config.in 2005-02-07 05:52:50.000000000 +0100 +@@ -0,0 +1,23 @@ ++# ++# Bridge netfilter configuration ++# ++dep_tristate ' Bridge: ebtables' CONFIG_BRIDGE_NF_EBTABLES $CONFIG_BRIDGE ++dep_tristate ' ebt: filter table support' CONFIG_BRIDGE_EBT_T_FILTER $CONFIG_BRIDGE_NF_EBTABLES ++dep_tristate ' ebt: nat table support' CONFIG_BRIDGE_EBT_T_NAT $CONFIG_BRIDGE_NF_EBTABLES ++dep_tristate ' ebt: broute table support' CONFIG_BRIDGE_EBT_BROUTE $CONFIG_BRIDGE_NF_EBTABLES ++dep_tristate ' ebt: log support' CONFIG_BRIDGE_EBT_LOG $CONFIG_BRIDGE_NF_EBTABLES ++dep_tristate ' ebt: ulog support' CONFIG_BRIDGE_EBT_LOG $CONFIG_BRIDGE_NF_EBTABLES ++dep_tristate ' ebt: IP filter support' CONFIG_BRIDGE_EBT_IPF $CONFIG_BRIDGE_NF_EBTABLES ++dep_tristate ' ebt: ARP filter support' CONFIG_BRIDGE_EBT_ARPF $CONFIG_BRIDGE_NF_EBTABLES ++dep_tristate ' ebt: among filter support' CONFIG_BRIDGE_EBT_AMONG $CONFIG_BRIDGE_NF_EBTABLES ++dep_tristate ' ebt: limit filter support' CONFIG_BRIDGE_EBT_LIMIT $CONFIG_BRIDGE_NF_EBTABLES ++dep_tristate ' ebt: 802.1Q VLAN filter support' CONFIG_BRIDGE_EBT_VLANF $CONFIG_BRIDGE_NF_EBTABLES ++dep_tristate ' ebt: 802.3 filter support' CONFIG_BRIDGE_EBT_802_3 $CONFIG_BRIDGE_NF_EBTABLES ++dep_tristate ' ebt: packet type filter support' CONFIG_BRIDGE_EBT_PKTTYPE $CONFIG_BRIDGE_NF_EBTABLES ++dep_tristate ' ebt: STP filter support' CONFIG_BRIDGE_EBT_STP $CONFIG_BRIDGE_NF_EBTABLES ++dep_tristate ' ebt: mark filter support' CONFIG_BRIDGE_EBT_MARKF $CONFIG_BRIDGE_NF_EBTABLES ++dep_tristate ' ebt: arp reply target support' CONFIG_BRIDGE_EBT_ARPREPLY $CONFIG_BRIDGE_NF_EBTABLES ++dep_tristate ' ebt: snat target support' CONFIG_BRIDGE_EBT_SNAT $CONFIG_BRIDGE_NF_EBTABLES ++dep_tristate ' ebt: dnat target support' CONFIG_BRIDGE_EBT_DNAT $CONFIG_BRIDGE_NF_EBTABLES ++dep_tristate ' ebt: redirect target support' CONFIG_BRIDGE_EBT_REDIRECT $CONFIG_BRIDGE_NF_EBTABLES ++dep_tristate ' ebt: mark target support' CONFIG_BRIDGE_EBT_MARK_T $CONFIG_BRIDGE_NF_EBTABLES +diff -Nur linux-mips-cvs/net/bridge/netfilter/Makefile linux-ebtables/net/bridge/netfilter/Makefile +--- linux-mips-cvs/net/bridge/netfilter/Makefile 1970-01-01 01:00:00.000000000 +0100 ++++ linux-ebtables/net/bridge/netfilter/Makefile 2005-02-07 05:52:50.000000000 +0100 +@@ -0,0 +1,34 @@ ++# ++# Makefile for the netfilter modules on top of bridging. ++# ++# Note! Dependencies are done automagically by 'make dep', which also ++# removes any old dependencies. DON'T put your own dependencies here ++# unless it's something special (ie not a .c file). ++# ++# Note 2! The CFLAGS definition is now in the main makefile... ++ ++O_TARGET := netfilter.o ++ ++export-objs := ebtables.o ++ ++obj-$(CONFIG_BRIDGE_NF_EBTABLES) += ebtables.o ++obj-$(CONFIG_BRIDGE_EBT_T_FILTER) += ebtable_filter.o ++obj-$(CONFIG_BRIDGE_EBT_T_NAT) += ebtable_nat.o ++obj-$(CONFIG_BRIDGE_EBT_BROUTE) += ebtable_broute.o ++obj-$(CONFIG_BRIDGE_EBT_802_3) += ebt_802_3.o ++obj-$(CONFIG_BRIDGE_EBT_ARPF) += ebt_arp.o ++obj-$(CONFIG_BRIDGE_EBT_AMONG) += ebt_among.o ++obj-$(CONFIG_BRIDGE_EBT_IPF) += ebt_ip.o ++obj-$(CONFIG_BRIDGE_EBT_LIMIT) += ebt_limit.o ++obj-$(CONFIG_BRIDGE_EBT_MARKF) += ebt_mark_m.o ++obj-$(CONFIG_BRIDGE_EBT_PKTTYPE) += ebt_pkttype.o ++obj-$(CONFIG_BRIDGE_EBT_STP) += ebt_stp.o ++obj-$(CONFIG_BRIDGE_EBT_VLANF) += ebt_vlan.o ++obj-$(CONFIG_BRIDGE_EBT_LOG) += ebt_log.o ++obj-$(CONFIG_BRIDGE_EBT_LOG) += ebt_ulog.o ++obj-$(CONFIG_BRIDGE_EBT_ARPREPLY) += ebt_arpreply.o ++obj-$(CONFIG_BRIDGE_EBT_DNAT) += ebt_dnat.o ++obj-$(CONFIG_BRIDGE_EBT_MARK_T) += ebt_mark.o ++obj-$(CONFIG_BRIDGE_EBT_REDIRECT) += ebt_redirect.o ++obj-$(CONFIG_BRIDGE_EBT_SNAT) += ebt_snat.o ++include $(TOPDIR)/Rules.make +diff -Nur linux-mips-cvs/net/bridge/netfilter/ebt_802_3.c linux-ebtables/net/bridge/netfilter/ebt_802_3.c +--- linux-mips-cvs/net/bridge/netfilter/ebt_802_3.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux-ebtables/net/bridge/netfilter/ebt_802_3.c 2005-02-07 05:52:50.000000000 +0100 +@@ -0,0 +1,74 @@ ++/* ++ * 802_3 ++ * ++ * Author: ++ * Chris Vitale csv@bluetail.com ++ * ++ * May 2003 ++ * ++ */ ++ ++#include <linux/netfilter_bridge/ebtables.h> ++#include <linux/netfilter_bridge/ebt_802_3.h> ++#include <linux/module.h> ++ ++static int ebt_filter_802_3(const struct sk_buff *skb, const struct net_device *in, ++ const struct net_device *out, const void *data, unsigned int datalen) ++{ ++ struct ebt_802_3_info *info = (struct ebt_802_3_info *)data; ++ struct ebt_802_3_hdr *hdr = (struct ebt_802_3_hdr *)skb->mac.ethernet; ++ uint16_t type = hdr->llc.ui.ctrl & IS_UI ? hdr->llc.ui.type : hdr->llc.ni.type; ++ ++ if (info->bitmask & EBT_802_3_SAP) { ++ if (FWINV(info->sap != hdr->llc.ui.ssap, EBT_802_3_SAP)) ++ return EBT_NOMATCH; ++ if (FWINV(info->sap != hdr->llc.ui.dsap, EBT_802_3_SAP)) ++ return EBT_NOMATCH; ++ } ++ ++ if (info->bitmask & EBT_802_3_TYPE) { ++ if (!(hdr->llc.ui.dsap == CHECK_TYPE && hdr->llc.ui.ssap == CHECK_TYPE)) ++ return EBT_NOMATCH; ++ if (FWINV(info->type != type, EBT_802_3_TYPE)) ++ return EBT_NOMATCH; ++ } ++ ++ return EBT_MATCH; ++} ++ ++static struct ebt_match filter_802_3; ++static int ebt_802_3_check(const char *tablename, unsigned int hookmask, ++ const struct ebt_entry *e, void *data, unsigned int datalen) ++{ ++ struct ebt_802_3_info *info = (struct ebt_802_3_info *)data; ++ ++ if (datalen != EBT_ALIGN(sizeof(struct ebt_802_3_info))) ++ return -EINVAL; ++ if (info->bitmask & ~EBT_802_3_MASK || info->invflags & ~EBT_802_3_MASK) ++ return -EINVAL; ++ ++ return 0; ++} ++ ++static struct ebt_match filter_802_3 = ++{ ++ .name = EBT_802_3_MATCH, ++ .match = ebt_filter_802_3, ++ .check = ebt_802_3_check, ++ .me = THIS_MODULE, ++}; ++ ++static int __init init(void) ++{ ++ return ebt_register_match(&filter_802_3); ++} ++ ++static void __exit fini(void) ++{ ++ ebt_unregister_match(&filter_802_3); ++} ++ ++module_init(init); ++module_exit(fini); ++EXPORT_NO_SYMBOLS; ++MODULE_LICENSE("GPL"); +diff -Nur linux-mips-cvs/net/bridge/netfilter/ebt_among.c linux-ebtables/net/bridge/netfilter/ebt_among.c +--- linux-mips-cvs/net/bridge/netfilter/ebt_among.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux-ebtables/net/bridge/netfilter/ebt_among.c 2005-02-07 05:52:50.000000000 +0100 +@@ -0,0 +1,223 @@ ++/* ++ * ebt_among ++ * ++ * Authors: ++ * Grzegorz Borowiak <grzes@gnu.univ.gda.pl> ++ * ++ * August, 2003 ++ * ++ */ ++ ++#include <linux/netfilter_bridge/ebtables.h> ++#include <linux/netfilter_bridge/ebt_among.h> ++#include <linux/ip.h> ++#include <linux/if_arp.h> ++#include <linux/module.h> ++ ++static int ebt_mac_wormhash_contains(const struct ebt_mac_wormhash *wh, ++ const char *mac, uint32_t ip) ++{ ++ /* You may be puzzled as to how this code works. ++ * Some tricks were used, refer to ++ * include/linux/netfilter_bridge/ebt_among.h ++ * as there you can find a solution of this mystery. ++ */ ++ const struct ebt_mac_wormhash_tuple *p; ++ int start, limit, i; ++ uint32_t cmp[2] = { 0, 0 }; ++ int key = (const unsigned char) mac[5]; ++ ++ memcpy(((char *) cmp) + 2, mac, 6); ++ start = wh->table[key]; ++ limit = wh->table[key + 1]; ++ if (ip) { ++ for (i = start; i < limit; i++) { ++ p = &wh->pool[i]; ++ if (cmp[1] == p->cmp[1] && cmp[0] == p->cmp[0]) { ++ if (p->ip == 0 || p->ip == ip) { ++ return 1; ++ } ++ } ++ } ++ } else { ++ for (i = start; i < limit; i++) { ++ p = &wh->pool[i]; ++ if (cmp[1] == p->cmp[1] && cmp[0] == p->cmp[0]) { ++ if (p->ip == 0) { ++ return 1; ++ } ++ } ++ } ++ } ++ return 0; ++} ++ ++static int ebt_mac_wormhash_check_integrity(const struct ebt_mac_wormhash ++ *wh) ++{ ++ int i; ++ ++ for (i = 0; i < 256; i++) { ++ if (wh->table[i] > wh->table[i + 1]) ++ return -0x100 - i; ++ if (wh->table[i] < 0) ++ return -0x200 - i; ++ if (wh->table[i] > wh->poolsize) ++ return -0x300 - i; ++ } ++ if (wh->table[256] > wh->poolsize) ++ return -0xc00; ++ return 0; ++} ++ ++static int get_ip_dst(const struct sk_buff *skb, uint32_t * addr) ++{ ++ if (skb->mac.ethernet->h_proto == __constant_htons(ETH_P_IP)) ++ *addr = skb->nh.iph->daddr; ++ else if (skb->mac.ethernet->h_proto == __constant_htons(ETH_P_ARP)) { ++ uint32_t arp_len = sizeof(struct arphdr) + ++ (2 * (((*skb).nh.arph)->ar_hln)) + ++ (2 * (((*skb).nh.arph)->ar_pln)); ++ ++ /* Make sure the packet is long enough. */ ++ if ((((*skb).nh.raw) + arp_len) > (*skb).tail) ++ return -1; ++ /* IPv4 addresses are always 4 bytes. */ ++ if (((*skb).nh.arph)->ar_pln != sizeof(uint32_t)) ++ return -1; ++ ++ memcpy(addr, ((*skb).nh.raw) + sizeof(struct arphdr) + ++ (2 * (((*skb).nh.arph)->ar_hln)) + ++ (((*skb).nh.arph)->ar_pln), sizeof(uint32_t)); ++ ++ } ++ return 0; ++} ++ ++static int get_ip_src(const struct sk_buff *skb, uint32_t * addr) ++{ ++ if (skb->mac.ethernet->h_proto == __constant_htons(ETH_P_IP)) ++ *addr = skb->nh.iph->saddr; ++ else if (skb->mac.ethernet->h_proto == __constant_htons(ETH_P_ARP)) { ++ uint32_t arp_len = sizeof(struct arphdr) + ++ (2 * (((*skb).nh.arph)->ar_hln)) + ++ (2 * (((*skb).nh.arph)->ar_pln)); ++ ++ /* Make sure the packet is long enough. */ ++ if ((((*skb).nh.raw) + arp_len) > (*skb).tail) ++ return -1; ++ /* IPv4 addresses are always 4 bytes. */ ++ if (((*skb).nh.arph)->ar_pln != sizeof(uint32_t)) ++ return -1; ++ ++ memcpy(addr, ((*skb).nh.raw) + sizeof(struct arphdr) + ++ ((((*skb).nh.arph)->ar_hln)), sizeof(uint32_t)); ++ ++ } ++ return 0; ++} ++ ++static int ebt_filter_among(const struct sk_buff *skb, ++ const struct net_device *in, ++ const struct net_device *out, const void *data, ++ unsigned int datalen) ++{ ++ struct ebt_among_info *info = (struct ebt_among_info *) data; ++ const char *dmac, *smac; ++ const struct ebt_mac_wormhash *wh_dst, *wh_src; ++ uint32_t dip = 0, sip = 0; ++ ++ wh_dst = ebt_among_wh_dst(info); ++ wh_src = ebt_among_wh_src(info); ++ ++ if (wh_src) { ++ smac = skb->mac.ethernet->h_source; ++ if (get_ip_src(skb, &sip)) ++ return EBT_NOMATCH; ++ if (!(info->bitmask & EBT_AMONG_SRC_NEG)) { ++ /* we match only if it contains */ ++ if (!ebt_mac_wormhash_contains(wh_src, smac, sip)) ++ return EBT_NOMATCH; ++ } else { ++ /* we match only if it DOES NOT contain */ ++ if (ebt_mac_wormhash_contains(wh_src, smac, sip)) ++ return EBT_NOMATCH; ++ } ++ } ++ ++ if (wh_dst) { ++ dmac = skb->mac.ethernet->h_dest; ++ if (get_ip_dst(skb, &dip)) ++ return EBT_NOMATCH; ++ if (!(info->bitmask & EBT_AMONG_DST_NEG)) { ++ /* we match only if it contains */ ++ if (!ebt_mac_wormhash_contains(wh_dst, dmac, dip)) ++ return EBT_NOMATCH; ++ } else { ++ /* we match only if it DOES NOT contain */ ++ if (ebt_mac_wormhash_contains(wh_dst, dmac, dip)) ++ return EBT_NOMATCH; ++ } ++ } ++ ++ return EBT_MATCH; ++} ++ ++static int ebt_among_check(const char *tablename, unsigned int hookmask, ++ const struct ebt_entry *e, void *data, ++ unsigned int datalen) ++{ ++ struct ebt_among_info *info = (struct ebt_among_info *) data; ++ int expected_length = sizeof(struct ebt_among_info); ++ const struct ebt_mac_wormhash *wh_dst, *wh_src; ++ int err; ++ ++ wh_dst = ebt_among_wh_dst(info); ++ wh_src = ebt_among_wh_src(info); ++ expected_length += ebt_mac_wormhash_size(wh_dst); ++ expected_length += ebt_mac_wormhash_size(wh_src); ++ ++ if (datalen != EBT_ALIGN(expected_length)) { ++ printk(KERN_WARNING ++ "ebtables: among: wrong size: %d" ++ "against expected %d, rounded to %d\n", ++ datalen, expected_length, ++ EBT_ALIGN(expected_length)); ++ return -EINVAL; ++ } ++ if (wh_dst && (err = ebt_mac_wormhash_check_integrity(wh_dst))) { ++ printk(KERN_WARNING ++ "ebtables: among: dst integrity fail: %x\n", -err); ++ return -EINVAL; ++ } ++ if (wh_src && (err = ebt_mac_wormhash_check_integrity(wh_src))) { ++ printk(KERN_WARNING ++ "ebtables: among: src integrity fail: %x\n", -err); ++ return -EINVAL; ++ } ++ return 0; ++} ++ ++static struct ebt_match filter_among = { ++ {NULL, NULL}, ++ EBT_AMONG_MATCH, ++ ebt_filter_among, ++ ebt_among_check, ++ NULL, ++ THIS_MODULE ++}; ++ ++static int __init init(void) ++{ ++ return ebt_register_match(&filter_among); ++} ++ ++static void __exit fini(void) ++{ ++ ebt_unregister_match(&filter_among); ++} ++ ++module_init(init); ++module_exit(fini); ++EXPORT_NO_SYMBOLS; ++MODULE_LICENSE("GPL"); +diff -Nur linux-mips-cvs/net/bridge/netfilter/ebt_arp.c linux-ebtables/net/bridge/netfilter/ebt_arp.c +--- linux-mips-cvs/net/bridge/netfilter/ebt_arp.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux-ebtables/net/bridge/netfilter/ebt_arp.c 2005-02-07 05:52:50.000000000 +0100 +@@ -0,0 +1,149 @@ ++/* ++ * ebt_arp ++ * ++ * Authors: ++ * Bart De Schuymer <bart.de.schuymer@pandora.be> ++ * Tim Gardner <timg@tpi.com> ++ * ++ * April, 2002 ++ * ++ */ ++ ++#include <linux/netfilter_bridge/ebtables.h> ++#include <linux/netfilter_bridge/ebt_arp.h> ++#include <linux/if_arp.h> ++#include <linux/if_ether.h> ++#include <linux/module.h> ++ ++static int ebt_filter_arp(const struct sk_buff *skb, const struct net_device *in, ++ const struct net_device *out, const void *data, unsigned int datalen) ++{ ++ struct ebt_arp_info *info = (struct ebt_arp_info *)data; ++ ++ if (info->bitmask & EBT_ARP_OPCODE && FWINV(info->opcode != ++ ((*skb).nh.arph)->ar_op, EBT_ARP_OPCODE)) ++ return EBT_NOMATCH; ++ if (info->bitmask & EBT_ARP_HTYPE && FWINV(info->htype != ++ ((*skb).nh.arph)->ar_hrd, EBT_ARP_HTYPE)) ++ return EBT_NOMATCH; ++ if (info->bitmask & EBT_ARP_PTYPE && FWINV(info->ptype != ++ ((*skb).nh.arph)->ar_pro, EBT_ARP_PTYPE)) ++ return EBT_NOMATCH; ++ ++ if (info->bitmask & (EBT_ARP_SRC_IP | EBT_ARP_DST_IP)) ++ { ++ uint32_t arp_len = sizeof(struct arphdr) + ++ (2 * (((*skb).nh.arph)->ar_hln)) + ++ (2 * (((*skb).nh.arph)->ar_pln)); ++ uint32_t dst; ++ uint32_t src; ++ ++ // Make sure the packet is long enough. ++ if ((((*skb).nh.raw) + arp_len) > (*skb).tail) ++ return EBT_NOMATCH; ++ // IPv4 addresses are always 4 bytes. ++ if (((*skb).nh.arph)->ar_pln != sizeof(uint32_t)) ++ return EBT_NOMATCH; ++ ++ if (info->bitmask & EBT_ARP_SRC_IP) { ++ memcpy(&src, ((*skb).nh.raw) + sizeof(struct arphdr) + ++ ((*skb).nh.arph)->ar_hln, sizeof(uint32_t)); ++ if (FWINV(info->saddr != (src & info->smsk), ++ EBT_ARP_SRC_IP)) ++ return EBT_NOMATCH; ++ } ++ ++ if (info->bitmask & EBT_ARP_DST_IP) { ++ memcpy(&dst, ((*skb).nh.raw)+sizeof(struct arphdr) + ++ (2*(((*skb).nh.arph)->ar_hln)) + ++ (((*skb).nh.arph)->ar_pln), sizeof(uint32_t)); ++ if (FWINV(info->daddr != (dst & info->dmsk), ++ EBT_ARP_DST_IP)) ++ return EBT_NOMATCH; ++ } ++ } ++ ++ if (info->bitmask & (EBT_ARP_SRC_MAC | EBT_ARP_DST_MAC)) ++ { ++ uint32_t arp_len = sizeof(struct arphdr) + ++ (2 * (((*skb).nh.arph)->ar_hln)) + ++ (2 * (((*skb).nh.arph)->ar_pln)); ++ unsigned char dst[ETH_ALEN]; ++ unsigned char src[ETH_ALEN]; ++ ++ // Make sure the packet is long enough. ++ if ((((*skb).nh.raw) + arp_len) > (*skb).tail) ++ return EBT_NOMATCH; ++ // MAC addresses are 6 bytes. ++ if (((*skb).nh.arph)->ar_hln != ETH_ALEN) ++ return EBT_NOMATCH; ++ if (info->bitmask & EBT_ARP_SRC_MAC) { ++ uint8_t verdict, i; ++ ++ memcpy(&src, ((*skb).nh.raw) + ++ sizeof(struct arphdr), ++ ETH_ALEN); ++ verdict = 0; ++ for (i = 0; i < 6; i++) ++ verdict |= (src[i] ^ info->smaddr[i]) & ++ info->smmsk[i]; ++ if (FWINV(verdict != 0, EBT_ARP_SRC_MAC)) ++ return EBT_NOMATCH; ++ } ++ ++ if (info->bitmask & EBT_ARP_DST_MAC) { ++ uint8_t verdict, i; ++ ++ memcpy(&dst, ((*skb).nh.raw) + ++ sizeof(struct arphdr) + ++ (((*skb).nh.arph)->ar_hln) + ++ (((*skb).nh.arph)->ar_pln), ++ ETH_ALEN); ++ verdict = 0; ++ for (i = 0; i < 6; i++) ++ verdict |= (dst[i] ^ info->dmaddr[i]) & ++ info->dmmsk[i]; ++ if (FWINV(verdict != 0, EBT_ARP_DST_MAC)) ++ return EBT_NOMATCH; ++ } ++ } ++ ++ return EBT_MATCH; ++} ++ ++static int ebt_arp_check(const char *tablename, unsigned int hookmask, ++ const struct ebt_entry *e, void *data, unsigned int datalen) ++{ ++ struct ebt_arp_info *info = (struct ebt_arp_info *)data; ++ ++ if (datalen != EBT_ALIGN(sizeof(struct ebt_arp_info))) ++ return -EINVAL; ++ if ((e->ethproto != __constant_htons(ETH_P_ARP) && ++ e->ethproto != __constant_htons(ETH_P_RARP)) || ++ e->invflags & EBT_IPROTO) ++ return -EINVAL; ++ if (info->bitmask & ~EBT_ARP_MASK || info->invflags & ~EBT_ARP_MASK) ++ return -EINVAL; ++ return 0; ++} ++ ++static struct ebt_match filter_arp = ++{ ++ {NULL, NULL}, EBT_ARP_MATCH, ebt_filter_arp, ebt_arp_check, NULL, ++ THIS_MODULE ++}; ++ ++static int __init init(void) ++{ ++ return ebt_register_match(&filter_arp); ++} ++ ++static void __exit fini(void) ++{ ++ ebt_unregister_match(&filter_arp); ++} ++ ++module_init(init); ++module_exit(fini); ++EXPORT_NO_SYMBOLS; ++MODULE_LICENSE("GPL"); +diff -Nur linux-mips-cvs/net/bridge/netfilter/ebt_arpreply.c linux-ebtables/net/bridge/netfilter/ebt_arpreply.c +--- linux-mips-cvs/net/bridge/netfilter/ebt_arpreply.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux-ebtables/net/bridge/netfilter/ebt_arpreply.c 2005-02-07 05:52:50.000000000 +0100 +@@ -0,0 +1,86 @@ ++/* ++ * ebt_arpreply ++ * ++ * Authors: ++ * Grzegorz Borowiak <grzes@gnu.univ.gda.pl> ++ * Bart De Schuymer <bdschuym@pandora.be> ++ * ++ * August, 2003 ++ * ++ */ ++ ++#include <linux/netfilter_bridge/ebtables.h> ++#include <linux/netfilter_bridge/ebt_arpreply.h> ++#include <linux/if_arp.h> ++#include <net/arp.h> ++#include <linux/module.h> ++ ++static int ebt_target_reply(struct sk_buff **pskb, unsigned int hooknr, ++ const struct net_device *in, const struct net_device *out, ++ const void *data, unsigned int datalen) ++{ ++ struct ebt_arpreply_info *info = (struct ebt_arpreply_info *)data; ++ struct arphdr *ah; ++ unsigned char *sha, *arp_ptr; ++ u32 sip, tip; ++ ++ ah = (**pskb).nh.arph; ++ if (ah->ar_op != __constant_htons(ARPOP_REQUEST) || ++ ah->ar_hln != ETH_ALEN || ah->ar_pro != htons(ETH_P_IP) || ++ ah->ar_pln != 4) ++ return EBT_CONTINUE; ++ ++ arp_ptr = (unsigned char *)(ah + 1); ++ ++ /* get source and target IP */ ++ sha = arp_ptr; ++ arp_ptr += ETH_ALEN; ++ memcpy(&sip, arp_ptr, 4); ++ arp_ptr += 4 + ETH_ALEN; ++ memcpy(&tip, arp_ptr, 4); ++ ++ arp_send(ARPOP_REPLY, ETH_P_ARP, sip, in, tip, sha, info->mac, sha); ++ ++ return info->target; ++} ++ ++static int ebt_target_reply_check(const char *tablename, unsigned int hookmask, ++ const struct ebt_entry *e, void *data, unsigned int datalen) ++{ ++ struct ebt_arpreply_info *info = (struct ebt_arpreply_info *)data; ++ ++ if (datalen != EBT_ALIGN(sizeof(struct ebt_arpreply_info))) ++ return -EINVAL; ++ if (BASE_CHAIN && info->target == EBT_RETURN) ++ return -EINVAL; ++ if (e->ethproto != __constant_htons(ETH_P_ARP) || ++ e->invflags & EBT_IPROTO) ++ return -EINVAL; ++ CLEAR_BASE_CHAIN_BIT; ++ if (strcmp(tablename, "nat") || hookmask & ~(1 << NF_BR_PRE_ROUTING)) ++ return -EINVAL; ++ return 0; ++} ++ ++static struct ebt_target reply_target = ++{ ++ .name = EBT_ARPREPLY_TARGET, ++ .target = ebt_target_reply, ++ .check = ebt_target_reply_check, ++ .me = THIS_MODULE, ++}; ++ ++static int __init init(void) ++{ ++ return ebt_register_target(&reply_target); ++} ++ ++static void __exit fini(void) ++{ ++ ebt_unregister_target(&reply_target); ++} ++ ++module_init(init); ++module_exit(fini); ++EXPORT_NO_SYMBOLS; ++MODULE_LICENSE("GPL"); +diff -Nur linux-mips-cvs/net/bridge/netfilter/ebt_dnat.c linux-ebtables/net/bridge/netfilter/ebt_dnat.c +--- linux-mips-cvs/net/bridge/netfilter/ebt_dnat.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux-ebtables/net/bridge/netfilter/ebt_dnat.c 2005-02-07 05:52:50.000000000 +0100 +@@ -0,0 +1,65 @@ ++/* ++ * ebt_dnat ++ * ++ * Authors: ++ * Bart De Schuymer <bart.de.schuymer@pandora.be> ++ * ++ * June, 2002 ++ * ++ */ ++ ++#include <linux/netfilter_bridge/ebtables.h> ++#include <linux/netfilter_bridge/ebt_nat.h> ++#include <linux/module.h> ++#include <net/sock.h> ++ ++static int ebt_target_dnat(struct sk_buff **pskb, unsigned int hooknr, ++ const struct net_device *in, const struct net_device *out, ++ const void *data, unsigned int datalen) ++{ ++ struct ebt_nat_info *info = (struct ebt_nat_info *)data; ++ ++ memcpy(((**pskb).mac.ethernet)->h_dest, info->mac, ++ ETH_ALEN * sizeof(unsigned char)); ++ return info->target; ++} ++ ++static int ebt_target_dnat_check(const char *tablename, unsigned int hookmask, ++ const struct ebt_entry *e, void *data, unsigned int datalen) ++{ ++ struct ebt_nat_info *info = (struct ebt_nat_info *)data; ++ ++ if (BASE_CHAIN && info->target == EBT_RETURN) ++ return -EINVAL; ++ CLEAR_BASE_CHAIN_BIT; ++ if ( (strcmp(tablename, "nat") || ++ (hookmask & ~((1 << NF_BR_PRE_ROUTING) | (1 << NF_BR_LOCAL_OUT)))) && ++ (strcmp(tablename, "broute") || hookmask & ~(1 << NF_BR_BROUTING)) ) ++ return -EINVAL; ++ if (datalen != EBT_ALIGN(sizeof(struct ebt_nat_info))) ++ return -EINVAL; ++ if (INVALID_TARGET) ++ return -EINVAL; ++ return 0; ++} ++ ++static struct ebt_target dnat = ++{ ++ {NULL, NULL}, EBT_DNAT_TARGET, ebt_target_dnat, ebt_target_dnat_check, ++ NULL, THIS_MODULE ++}; ++ ++static int __init init(void) ++{ ++ return ebt_register_target(&dnat); ++} ++ ++static void __exit fini(void) ++{ ++ ebt_unregister_target(&dnat); ++} ++ ++module_init(init); ++module_exit(fini); ++EXPORT_NO_SYMBOLS; ++MODULE_LICENSE("GPL"); +diff -Nur linux-mips-cvs/net/bridge/netfilter/ebt_ip.c linux-ebtables/net/bridge/netfilter/ebt_ip.c +--- linux-mips-cvs/net/bridge/netfilter/ebt_ip.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux-ebtables/net/bridge/netfilter/ebt_ip.c 2005-02-07 05:52:50.000000000 +0100 +@@ -0,0 +1,121 @@ ++/* ++ * ebt_ip ++ * ++ * Authors: ++ * Bart De Schuymer <bart.de.schuymer@pandora.be> ++ * ++ * April, 2002 ++ * ++ * Changes: ++ * added ip-sport and ip-dport ++ * Innominate Security Technologies AG <mhopf@innominate.com> ++ * September, 2002 ++ */ ++ ++#include <linux/netfilter_bridge/ebtables.h> ++#include <linux/netfilter_bridge/ebt_ip.h> ++#include <linux/ip.h> ++#include <linux/in.h> ++#include <linux/module.h> ++ ++struct tcpudphdr { ++ uint16_t src; ++ uint16_t dst; ++}; ++ ++union h_u { ++ unsigned char *raw; ++ struct tcpudphdr *tuh; ++}; ++ ++static int ebt_filter_ip(const struct sk_buff *skb, const struct net_device *in, ++ const struct net_device *out, const void *data, ++ unsigned int datalen) ++{ ++ struct ebt_ip_info *info = (struct ebt_ip_info *)data; ++ ++ if (info->bitmask & EBT_IP_TOS && ++ FWINV(info->tos != ((*skb).nh.iph)->tos, EBT_IP_TOS)) ++ return EBT_NOMATCH; ++ if (info->bitmask & EBT_IP_PROTO) { ++ if (FWINV(info->protocol != ((*skb).nh.iph)->protocol, ++ EBT_IP_PROTO)) ++ return EBT_NOMATCH; ++ if ( info->protocol == IPPROTO_TCP || ++ info->protocol == IPPROTO_UDP ) ++ { ++ union h_u h; ++ h.raw = skb->data + skb->nh.iph->ihl*4; ++ if (info->bitmask & EBT_IP_DPORT) { ++ uint16_t port = ntohs(h.tuh->dst); ++ if (FWINV(port < info->dport[0] || ++ port > info->dport[1], ++ EBT_IP_DPORT)) ++ return EBT_NOMATCH; ++ } ++ if (info->bitmask & EBT_IP_SPORT) { ++ uint16_t port = ntohs(h.tuh->src); ++ if (FWINV(port < info->sport[0] || ++ port > info->sport[1], ++ EBT_IP_SPORT)) ++ return EBT_NOMATCH; ++ } ++ } ++ } ++ if (info->bitmask & EBT_IP_SOURCE && ++ FWINV((((*skb).nh.iph)->saddr & info->smsk) != ++ info->saddr, EBT_IP_SOURCE)) ++ return EBT_NOMATCH; ++ if ((info->bitmask & EBT_IP_DEST) && ++ FWINV((((*skb).nh.iph)->daddr & info->dmsk) != ++ info->daddr, EBT_IP_DEST)) ++ return EBT_NOMATCH; ++ return EBT_MATCH; ++} ++ ++static int ebt_ip_check(const char *tablename, unsigned int hookmask, ++ const struct ebt_entry *e, void *data, unsigned int datalen) ++{ ++ struct ebt_ip_info *info = (struct ebt_ip_info *)data; ++ ++ if (datalen != EBT_ALIGN(sizeof(struct ebt_ip_info))) ++ return -EINVAL; ++ if (e->ethproto != __constant_htons(ETH_P_IP) || ++ e->invflags & EBT_IPROTO) ++ return -EINVAL; ++ if (info->bitmask & ~EBT_IP_MASK || info->invflags & ~EBT_IP_MASK) ++ return -EINVAL; ++ if (info->bitmask & (EBT_IP_DPORT | EBT_IP_SPORT)) { ++ if (!info->bitmask & EBT_IPROTO) ++ return -EINVAL; ++ if (info->protocol != IPPROTO_TCP && ++ info->protocol != IPPROTO_UDP) ++ return -EINVAL; ++ } ++ if (info->bitmask & EBT_IP_DPORT && info->dport[0] > info->dport[1]) ++ return -EINVAL; ++ if (info->bitmask & EBT_IP_SPORT && info->sport[0] > info->sport[1]) ++ return -EINVAL; ++ return 0; ++} ++ ++static struct ebt_match filter_ip = ++{ ++ {NULL, NULL}, EBT_IP_MATCH, ebt_filter_ip, ebt_ip_check, NULL, ++ THIS_MODULE ++}; ++ ++static int __init init(void) ++{ ++ return ebt_register_match(&filter_ip); ++} ++ ++static void __exit fini(void) ++{ ++ ebt_unregister_match(&filter_ip); ++} ++ ++module_init(init); ++module_exit(fini); ++EXPORT_NO_SYMBOLS; ++MODULE_LICENSE("GPL"); +diff -Nur linux-mips-cvs/net/bridge/netfilter/ebt_limit.c linux-ebtables/net/bridge/netfilter/ebt_limit.c +--- linux-mips-cvs/net/bridge/netfilter/ebt_limit.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux-ebtables/net/bridge/netfilter/ebt_limit.c 2005-02-07 05:52:50.000000000 +0100 +@@ -0,0 +1,101 @@ ++/* ++ * ebt_limit ++ * ++ * Authors: ++ * Tom Marshall <tommy@home.tig-grr.com> ++ * ++ * Mostly copied from netfilter's ipt_limit.c, see that file for explanation ++ * ++ * September, 2003 ++ * ++ */ ++ ++#include <linux/netfilter_bridge/ebtables.h> ++#include <linux/netfilter_bridge/ebt_limit.h> ++#include <linux/module.h> ++ ++#include <linux/netdevice.h> ++#include <linux/spinlock.h> ++ ++static spinlock_t limit_lock = SPIN_LOCK_UNLOCKED; ++ ++#define CREDITS_PER_JIFFY 128 ++ ++static int ebt_limit_match(const struct sk_buff *skb, const struct net_device *in, ++ const struct net_device *out, const void *data, unsigned int datalen) ++{ ++ struct ebt_limit_info *info = (struct ebt_limit_info *)data; ++ unsigned long now = jiffies; ++ ++ spin_lock_bh(&limit_lock); ++ info->credit += (now - xchg(&info->prev, now)) * CREDITS_PER_JIFFY; ++ if (info->credit > info->credit_cap) ++ info->credit = info->credit_cap; ++ ++ if (info->credit >= info->cost) { ++ /* We're not limited. */ ++ info->credit -= info->cost; ++ spin_unlock_bh(&limit_lock); ++ return EBT_MATCH; ++ } ++ ++ spin_unlock_bh(&limit_lock); ++ return EBT_NOMATCH; ++} ++ ++/* Precision saver. */ ++static u_int32_t ++user2credits(u_int32_t user) ++{ ++ /* If multiplying would overflow... */ ++ if (user > 0xFFFFFFFF / (HZ*CREDITS_PER_JIFFY)) ++ /* Divide first. */ ++ return (user / EBT_LIMIT_SCALE) * HZ * CREDITS_PER_JIFFY; ++ ++ return (user * HZ * CREDITS_PER_JIFFY) / EBT_LIMIT_SCALE; ++} ++ ++static int ebt_limit_check(const char *tablename, unsigned int hookmask, ++ const struct ebt_entry *e, void *data, unsigned int datalen) ++{ ++ struct ebt_limit_info *info = (struct ebt_limit_info *)data; ++ ++ if (datalen != EBT_ALIGN(sizeof(struct ebt_limit_info))) ++ return -EINVAL; ++ ++ /* Check for overflow. */ ++ if (info->burst == 0 ++ || user2credits(info->avg * info->burst) < user2credits(info->avg)) { ++ printk("Overflow in ebt_limit: %u/%u\n", ++ info->avg, info->burst); ++ return -EINVAL; ++ } ++ ++ /* User avg in seconds * EBT_LIMIT_SCALE: convert to jiffies * 128. */ ++ info->prev = jiffies; ++ info->credit = user2credits(info->avg * info->burst); ++ info->credit_cap = user2credits(info->avg * info->burst); ++ info->cost = user2credits(info->avg); ++ return 0; ++} ++ ++static struct ebt_match ebt_limit_reg = ++{ ++ {NULL, NULL}, EBT_LIMIT_MATCH, ebt_limit_match, ebt_limit_check, NULL, ++ THIS_MODULE ++}; ++ ++static int __init init(void) ++{ ++ return ebt_register_match(&ebt_limit_reg); ++} ++ ++static void __exit fini(void) ++{ ++ ebt_unregister_match(&ebt_limit_reg); ++} ++ ++module_init(init); ++module_exit(fini); ++EXPORT_NO_SYMBOLS; ++MODULE_LICENSE("GPL"); +diff -Nur linux-mips-cvs/net/bridge/netfilter/ebt_log.c linux-ebtables/net/bridge/netfilter/ebt_log.c +--- linux-mips-cvs/net/bridge/netfilter/ebt_log.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux-ebtables/net/bridge/netfilter/ebt_log.c 2005-02-07 05:52:50.000000000 +0100 +@@ -0,0 +1,153 @@ ++/* ++ * ebt_log ++ * ++ * Authors: ++ * Bart De Schuymer <bart.de.schuymer@pandora.be> ++ * ++ * April, 2002 ++ * ++ */ ++ ++#include <linux/netfilter_bridge/ebtables.h> ++#include <linux/netfilter_bridge/ebt_log.h> ++#include <linux/module.h> ++#include <linux/ip.h> ++#include <linux/in.h> ++#include <linux/if_arp.h> ++#include <linux/spinlock.h> ++ ++static spinlock_t ebt_log_lock = SPIN_LOCK_UNLOCKED; ++ ++static int ebt_log_check(const char *tablename, unsigned int hookmask, ++ const struct ebt_entry *e, void *data, unsigned int datalen) ++{ ++ struct ebt_log_info *info = (struct ebt_log_info *)data; ++ ++ if (datalen != EBT_ALIGN(sizeof(struct ebt_log_info))) ++ return -EINVAL; ++ if (info->bitmask & ~EBT_LOG_MASK) ++ return -EINVAL; ++ if (info->loglevel >= 8) ++ return -EINVAL; ++ info->prefix[EBT_LOG_PREFIX_SIZE - 1] = '\0'; ++ return 0; ++} ++ ++struct tcpudphdr ++{ ++ uint16_t src; ++ uint16_t dst; ++}; ++ ++struct arppayload ++{ ++ unsigned char mac_src[ETH_ALEN]; ++ unsigned char ip_src[4]; ++ unsigned char mac_dst[ETH_ALEN]; ++ unsigned char ip_dst[4]; ++}; ++ ++static void print_MAC(unsigned char *p) ++{ ++ int i; ++ ++ for (i = 0; i < ETH_ALEN; i++, p++) ++ printk("%02x%c", *p, i == ETH_ALEN - 1 ? ' ':':'); ++} ++ ++#define myNIPQUAD(a) a[0], a[1], a[2], a[3] ++static void ebt_log(const struct sk_buff *skb, unsigned int hooknr, ++ const struct net_device *in, const struct net_device *out, ++ const void *data, unsigned int datalen) ++{ ++ struct ebt_log_info *info = (struct ebt_log_info *)data; ++ char level_string[4] = "< >"; ++ level_string[1] = '0' + info->loglevel; ++ ++ spin_lock_bh(&ebt_log_lock); ++ printk(level_string); ++ printk("%s IN=%s OUT=%s ", info->prefix, in ? in->name : "", ++ out ? out->name : ""); ++ ++ printk("MAC source = "); ++ print_MAC((skb->mac.ethernet)->h_source); ++ printk("MAC dest = "); ++ print_MAC((skb->mac.ethernet)->h_dest); ++ ++ printk("proto = 0x%04x", ntohs(((*skb).mac.ethernet)->h_proto)); ++ ++ if ((info->bitmask & EBT_LOG_IP) && skb->mac.ethernet->h_proto == ++ htons(ETH_P_IP)){ ++ struct iphdr *iph = skb->nh.iph; ++ printk(" IP SRC=%u.%u.%u.%u IP DST=%u.%u.%u.%u,", ++ NIPQUAD(iph->saddr), NIPQUAD(iph->daddr)); ++ printk(" IP tos=0x%02X, IP proto=%d", iph->tos, iph->protocol); ++ if (iph->protocol == IPPROTO_TCP || ++ iph->protocol == IPPROTO_UDP) { ++ struct tcpudphdr *ports = (struct tcpudphdr *)(skb->data + iph->ihl*4); ++ ++ if (skb->data + iph->ihl*4 > skb->tail) { ++ printk(" INCOMPLETE TCP/UDP header"); ++ goto out; ++ } ++ printk(" SPT=%u DPT=%u", ntohs(ports->src), ++ ntohs(ports->dst)); ++ } ++ goto out; ++ } ++ ++ if ((info->bitmask & EBT_LOG_ARP) && ++ ((skb->mac.ethernet->h_proto == __constant_htons(ETH_P_ARP)) || ++ (skb->mac.ethernet->h_proto == __constant_htons(ETH_P_RARP)))) { ++ struct arphdr * arph = skb->nh.arph; ++ printk(" ARP HTYPE=%d, PTYPE=0x%04x, OPCODE=%d", ++ ntohs(arph->ar_hrd), ntohs(arph->ar_pro), ++ ntohs(arph->ar_op)); ++ /* If it's for Ethernet and the lengths are OK, ++ * then log the ARP payload */ ++ if (arph->ar_hrd == __constant_htons(1) && ++ arph->ar_hln == ETH_ALEN && ++ arph->ar_pln == sizeof(uint32_t)) { ++ struct arppayload *arpp = (struct arppayload *)(skb->data + sizeof(*arph)); ++ ++ if (skb->data + sizeof(*arph) > skb->tail) { ++ printk(" INCOMPLETE ARP header"); ++ goto out; ++ } ++ ++ printk(" ARP MAC SRC="); ++ print_MAC(arpp->mac_src); ++ printk(" ARP IP SRC=%u.%u.%u.%u", ++ myNIPQUAD(arpp->ip_src)); ++ printk(" ARP MAC DST="); ++ print_MAC(arpp->mac_dst); ++ printk(" ARP IP DST=%u.%u.%u.%u", ++ myNIPQUAD(arpp->ip_dst)); ++ } ++ ++ } ++out: ++ printk("\n"); ++ spin_unlock_bh(&ebt_log_lock); ++} ++ ++static struct ebt_watcher log = ++{ ++ {NULL, NULL}, EBT_LOG_WATCHER, ebt_log, ebt_log_check, NULL, ++ THIS_MODULE ++}; ++ ++static int __init init(void) ++{ ++ return ebt_register_watcher(&log); ++} ++ ++static void __exit fini(void) ++{ ++ ebt_unregister_watcher(&log); ++} ++ ++module_init(init); ++module_exit(fini); ++EXPORT_NO_SYMBOLS; ++MODULE_LICENSE("GPL"); +diff -Nur linux-mips-cvs/net/bridge/netfilter/ebt_mark.c linux-ebtables/net/bridge/netfilter/ebt_mark.c +--- linux-mips-cvs/net/bridge/netfilter/ebt_mark.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux-ebtables/net/bridge/netfilter/ebt_mark.c 2005-02-07 05:52:50.000000000 +0100 +@@ -0,0 +1,66 @@ ++/* ++ * ebt_mark ++ * ++ * Authors: ++ * Bart De Schuymer <bart.de.schuymer@pandora.be> ++ * ++ * July, 2002 ++ * ++ */ ++ ++// The mark target can be used in any chain ++// I believe adding a mangle table just for marking is total overkill ++// Marking a frame doesn't really change anything in the frame anyway ++ ++#include <linux/netfilter_bridge/ebtables.h> ++#include <linux/netfilter_bridge/ebt_mark_t.h> ++#include <linux/module.h> ++ ++static int ebt_target_mark(struct sk_buff **pskb, unsigned int hooknr, ++ const struct net_device *in, const struct net_device *out, ++ const void *data, unsigned int datalen) ++{ ++ struct ebt_mark_t_info *info = (struct ebt_mark_t_info *)data; ++ ++ if ((*pskb)->nfmark != info->mark) { ++ (*pskb)->nfmark = info->mark; ++ (*pskb)->nfcache |= NFC_ALTERED; ++ } ++ return info->target; ++} ++ ++static int ebt_target_mark_check(const char *tablename, unsigned int hookmask, ++ const struct ebt_entry *e, void *data, unsigned int datalen) ++{ ++ struct ebt_mark_t_info *info = (struct ebt_mark_t_info *)data; ++ ++ if (datalen != EBT_ALIGN(sizeof(struct ebt_mark_t_info))) ++ return -EINVAL; ++ if (BASE_CHAIN && info->target == EBT_RETURN) ++ return -EINVAL; ++ CLEAR_BASE_CHAIN_BIT; ++ if (INVALID_TARGET) ++ return -EINVAL; ++ return 0; ++} ++ ++static struct ebt_target mark_target = ++{ ++ {NULL, NULL}, EBT_MARK_TARGET, ebt_target_mark, ++ ebt_target_mark_check, NULL, THIS_MODULE ++}; ++ ++static int __init init(void) ++{ ++ return ebt_register_target(&mark_target); ++} ++ ++static void __exit fini(void) ++{ ++ ebt_unregister_target(&mark_target); ++} ++ ++module_init(init); ++module_exit(fini); ++EXPORT_NO_SYMBOLS; ++MODULE_LICENSE("GPL"); +diff -Nur linux-mips-cvs/net/bridge/netfilter/ebt_mark_m.c linux-ebtables/net/bridge/netfilter/ebt_mark_m.c +--- linux-mips-cvs/net/bridge/netfilter/ebt_mark_m.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux-ebtables/net/bridge/netfilter/ebt_mark_m.c 2005-02-07 05:52:50.000000000 +0100 +@@ -0,0 +1,61 @@ ++/* ++ * ebt_mark_m ++ * ++ * Authors: ++ * Bart De Schuymer <bart.de.schuymer@pandora.be> ++ * ++ * July, 2002 ++ * ++ */ ++ ++#include <linux/netfilter_bridge/ebtables.h> ++#include <linux/netfilter_bridge/ebt_mark_m.h> ++#include <linux/module.h> ++ ++static int ebt_filter_mark(const struct sk_buff *skb, ++ const struct net_device *in, const struct net_device *out, const void *data, ++ unsigned int datalen) ++{ ++ struct ebt_mark_m_info *info = (struct ebt_mark_m_info *) data; ++ ++ if (info->bitmask & EBT_MARK_OR) ++ return !(!!(skb->nfmark & info->mask) ^ info->invert); ++ return !(((skb->nfmark & info->mask) == info->mark) ^ info->invert); ++} ++ ++static int ebt_mark_check(const char *tablename, unsigned int hookmask, ++ const struct ebt_entry *e, void *data, unsigned int datalen) ++{ ++ struct ebt_mark_m_info *info = (struct ebt_mark_m_info *) data; ++ ++ if (datalen != EBT_ALIGN(sizeof(struct ebt_mark_m_info))) ++ return -EINVAL; ++ if (info->bitmask & ~EBT_MARK_MASK) ++ return -EINVAL; ++ if ((info->bitmask & EBT_MARK_OR) && (info->bitmask & EBT_MARK_AND)) ++ return -EINVAL; ++ if (!info->bitmask) ++ return -EINVAL; ++ return 0; ++} ++ ++static struct ebt_match filter_mark = ++{ ++ {NULL, NULL}, EBT_MARK_MATCH, ebt_filter_mark, ebt_mark_check, NULL, ++ THIS_MODULE ++}; ++ ++static int __init init(void) ++{ ++ return ebt_register_match(&filter_mark); ++} ++ ++static void __exit fini(void) ++{ ++ ebt_unregister_match(&filter_mark); ++} ++ ++module_init(init); ++module_exit(fini); ++EXPORT_NO_SYMBOLS; ++MODULE_LICENSE("GPL"); +diff -Nur linux-mips-cvs/net/bridge/netfilter/ebt_pkttype.c linux-ebtables/net/bridge/netfilter/ebt_pkttype.c +--- linux-mips-cvs/net/bridge/netfilter/ebt_pkttype.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux-ebtables/net/bridge/netfilter/ebt_pkttype.c 2005-02-07 05:52:50.000000000 +0100 +@@ -0,0 +1,60 @@ ++/* ++ * ebt_pkttype ++ * ++ * Authors: ++ * Bart De Schuymer <bdschuym@pandora.be> ++ * ++ * April, 2003 ++ * ++ */ ++ ++#include <linux/netfilter_bridge/ebtables.h> ++#include <linux/netfilter_bridge/ebt_pkttype.h> ++#include <linux/module.h> ++ ++static int ebt_filter_pkttype(const struct sk_buff *skb, ++ const struct net_device *in, ++ const struct net_device *out, ++ const void *data, ++ unsigned int datalen) ++{ ++ struct ebt_pkttype_info *info = (struct ebt_pkttype_info *)data; ++ ++ return (skb->pkt_type != info->pkt_type) ^ info->invert; ++} ++ ++static int ebt_pkttype_check(const char *tablename, unsigned int hookmask, ++ const struct ebt_entry *e, void *data, unsigned int datalen) ++{ ++ struct ebt_pkttype_info *info = (struct ebt_pkttype_info *)data; ++ ++ if (datalen != EBT_ALIGN(sizeof(struct ebt_pkttype_info))) ++ return -EINVAL; ++ if (info->invert != 0 && info->invert != 1) ++ return -EINVAL; ++ /* Allow any pkt_type value */ ++ return 0; ++} ++ ++static struct ebt_match filter_pkttype = ++{ ++ .name = EBT_PKTTYPE_MATCH, ++ .match = ebt_filter_pkttype, ++ .check = ebt_pkttype_check, ++ .me = THIS_MODULE, ++}; ++ ++static int __init init(void) ++{ ++ return ebt_register_match(&filter_pkttype); ++} ++ ++static void __exit fini(void) ++{ ++ ebt_unregister_match(&filter_pkttype); ++} ++ ++module_init(init); ++module_exit(fini); ++EXPORT_NO_SYMBOLS; ++MODULE_LICENSE("GPL"); +diff -Nur linux-mips-cvs/net/bridge/netfilter/ebt_redirect.c linux-ebtables/net/bridge/netfilter/ebt_redirect.c +--- linux-mips-cvs/net/bridge/netfilter/ebt_redirect.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux-ebtables/net/bridge/netfilter/ebt_redirect.c 2005-02-07 05:52:50.000000000 +0100 +@@ -0,0 +1,71 @@ ++/* ++ * ebt_redirect ++ * ++ * Authors: ++ * Bart De Schuymer <bart.de.schuymer@pandora.be> ++ * ++ * April, 2002 ++ * ++ */ ++ ++#include <linux/netfilter_bridge/ebtables.h> ++#include <linux/netfilter_bridge/ebt_redirect.h> ++#include <linux/module.h> ++#include <net/sock.h> ++#include "../br_private.h" ++ ++static int ebt_target_redirect(struct sk_buff **pskb, unsigned int hooknr, ++ const struct net_device *in, const struct net_device *out, ++ const void *data, unsigned int datalen) ++{ ++ struct ebt_redirect_info *info = (struct ebt_redirect_info *)data; ++ ++ if (hooknr != NF_BR_BROUTING) ++ memcpy((**pskb).mac.ethernet->h_dest, ++ in->br_port->br->dev.dev_addr, ETH_ALEN); ++ else { ++ memcpy((**pskb).mac.ethernet->h_dest, ++ in->dev_addr, ETH_ALEN); ++ (*pskb)->pkt_type = PACKET_HOST; ++ } ++ return info->target; ++} ++ ++static int ebt_target_redirect_check(const char *tablename, unsigned int hookmask, ++ const struct ebt_entry *e, void *data, unsigned int datalen) ++{ ++ struct ebt_redirect_info *info = (struct ebt_redirect_info *)data; ++ ++ if (datalen != EBT_ALIGN(sizeof(struct ebt_redirect_info))) ++ return -EINVAL; ++ if (BASE_CHAIN && info->target == EBT_RETURN) ++ return -EINVAL; ++ CLEAR_BASE_CHAIN_BIT; ++ if ( (strcmp(tablename, "nat") || hookmask & ~(1 << NF_BR_PRE_ROUTING)) && ++ (strcmp(tablename, "broute") || hookmask & ~(1 << NF_BR_BROUTING)) ) ++ return -EINVAL; ++ if (INVALID_TARGET) ++ return -EINVAL; ++ return 0; ++} ++ ++static struct ebt_target redirect_target = ++{ ++ {NULL, NULL}, EBT_REDIRECT_TARGET, ebt_target_redirect, ++ ebt_target_redirect_check, NULL, THIS_MODULE ++}; ++ ++static int __init init(void) ++{ ++ return ebt_register_target(&redirect_target); ++} ++ ++static void __exit fini(void) ++{ ++ ebt_unregister_target(&redirect_target); ++} ++ ++module_init(init); ++module_exit(fini); ++EXPORT_NO_SYMBOLS; ++MODULE_LICENSE("GPL"); +diff -Nur linux-mips-cvs/net/bridge/netfilter/ebt_snat.c linux-ebtables/net/bridge/netfilter/ebt_snat.c +--- linux-mips-cvs/net/bridge/netfilter/ebt_snat.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux-ebtables/net/bridge/netfilter/ebt_snat.c 2005-02-07 05:52:50.000000000 +0100 +@@ -0,0 +1,64 @@ ++/* ++ * ebt_snat ++ * ++ * Authors: ++ * Bart De Schuymer <bart.de.schuymer@pandora.be> ++ * ++ * June, 2002 ++ * ++ */ ++ ++#include <linux/netfilter_bridge/ebtables.h> ++#include <linux/netfilter_bridge/ebt_nat.h> ++#include <linux/module.h> ++ ++static int ebt_target_snat(struct sk_buff **pskb, unsigned int hooknr, ++ const struct net_device *in, const struct net_device *out, ++ const void *data, unsigned int datalen) ++{ ++ struct ebt_nat_info *info = (struct ebt_nat_info *) data; ++ ++ memcpy(((**pskb).mac.ethernet)->h_source, info->mac, ++ ETH_ALEN * sizeof(unsigned char)); ++ return info->target; ++} ++ ++static int ebt_target_snat_check(const char *tablename, unsigned int hookmask, ++ const struct ebt_entry *e, void *data, unsigned int datalen) ++{ ++ struct ebt_nat_info *info = (struct ebt_nat_info *) data; ++ ++ if (datalen != EBT_ALIGN(sizeof(struct ebt_nat_info))) ++ return -EINVAL; ++ if (BASE_CHAIN && info->target == EBT_RETURN) ++ return -EINVAL; ++ CLEAR_BASE_CHAIN_BIT; ++ if (strcmp(tablename, "nat")) ++ return -EINVAL; ++ if (hookmask & ~(1 << NF_BR_POST_ROUTING)) ++ return -EINVAL; ++ if (INVALID_TARGET) ++ return -EINVAL; ++ return 0; ++} ++ ++static struct ebt_target snat = ++{ ++ {NULL, NULL}, EBT_SNAT_TARGET, ebt_target_snat, ebt_target_snat_check, ++ NULL, THIS_MODULE ++}; ++ ++static int __init init(void) ++{ ++ return ebt_register_target(&snat); ++} ++ ++static void __exit fini(void) ++{ ++ ebt_unregister_target(&snat); ++} ++ ++module_init(init); ++module_exit(fini); ++EXPORT_NO_SYMBOLS; ++MODULE_LICENSE("GPL"); +diff -Nur linux-mips-cvs/net/bridge/netfilter/ebt_stp.c linux-ebtables/net/bridge/netfilter/ebt_stp.c +--- linux-mips-cvs/net/bridge/netfilter/ebt_stp.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux-ebtables/net/bridge/netfilter/ebt_stp.c 2005-02-07 05:52:50.000000000 +0100 +@@ -0,0 +1,191 @@ ++/* ++ * ebt_stp ++ * ++ * Authors: ++ * Bart De Schuymer <bdschuym@pandora.be> ++ * Stephen Hemminger <shemminger@osdl.org> ++ * ++ * June, 2003 ++ */ ++ ++#include <linux/netfilter_bridge/ebtables.h> ++#include <linux/netfilter_bridge/ebt_stp.h> ++#include <linux/module.h> ++ ++#define BPDU_TYPE_CONFIG 0 ++#define BPDU_TYPE_TCN 0x80 ++ ++struct stp_header { ++ uint8_t dsap; ++ uint8_t ssap; ++ uint8_t ctrl; ++ uint8_t pid; ++ uint8_t vers; ++ uint8_t type; ++}; ++ ++struct stp_config_pdu { ++ uint8_t flags; ++ uint8_t root[8]; ++ uint8_t root_cost[4]; ++ uint8_t sender[8]; ++ uint8_t port[2]; ++ uint8_t msg_age[2]; ++ uint8_t max_age[2]; ++ uint8_t hello_time[2]; ++ uint8_t forward_delay[2]; ++}; ++ ++#define NR16(p) (p[0] << 8 | p[1]) ++#define NR32(p) ((p[0] << 24) | (p[1] << 16) | (p[2] << 8) | p[3]) ++ ++static int ebt_filter_config(struct ebt_stp_info *info, ++ struct stp_config_pdu *stpc) ++{ ++ struct ebt_stp_config_info *c; ++ uint16_t v16; ++ uint32_t v32; ++ int verdict, i; ++ ++ c = &info->config; ++ if ((info->bitmask & EBT_STP_FLAGS) && ++ FWINV(c->flags != stpc->flags, EBT_STP_FLAGS)) ++ return EBT_NOMATCH; ++ if (info->bitmask & EBT_STP_ROOTPRIO) { ++ v16 = NR16(stpc->root); ++ if (FWINV(v16 < c->root_priol || ++ v16 > c->root_priou, EBT_STP_ROOTPRIO)) ++ return EBT_NOMATCH; ++ } ++ if (info->bitmask & EBT_STP_ROOTADDR) { ++ verdict = 0; ++ for (i = 0; i < 6; i++) ++ verdict |= (stpc->root[2+i] ^ c->root_addr[i]) & ++ c->root_addrmsk[i]; ++ if (FWINV(verdict != 0, EBT_STP_ROOTADDR)) ++ return EBT_NOMATCH; ++ } ++ if (info->bitmask & EBT_STP_ROOTCOST) { ++ v32 = NR32(stpc->root_cost); ++ if (FWINV(v32 < c->root_costl || ++ v32 > c->root_costu, EBT_STP_ROOTCOST)) ++ return EBT_NOMATCH; ++ } ++ if (info->bitmask & EBT_STP_SENDERPRIO) { ++ v16 = NR16(stpc->sender); ++ if (FWINV(v16 < c->sender_priol || ++ v16 > c->sender_priou, EBT_STP_SENDERPRIO)) ++ return EBT_NOMATCH; ++ } ++ if (info->bitmask & EBT_STP_SENDERADDR) { ++ verdict = 0; ++ for (i = 0; i < 6; i++) ++ verdict |= (stpc->sender[2+i] ^ c->sender_addr[i]) & ++ c->sender_addrmsk[i]; ++ if (FWINV(verdict != 0, EBT_STP_SENDERADDR)) ++ return EBT_NOMATCH; ++ } ++ if (info->bitmask & EBT_STP_PORT) { ++ v16 = NR16(stpc->port); ++ if (FWINV(v16 < c->portl || ++ v16 > c->portu, EBT_STP_PORT)) ++ return EBT_NOMATCH; ++ } ++ if (info->bitmask & EBT_STP_MSGAGE) { ++ v16 = NR16(stpc->msg_age); ++ if (FWINV(v16 < c->msg_agel || ++ v16 > c->msg_ageu, EBT_STP_MSGAGE)) ++ return EBT_NOMATCH; ++ } ++ if (info->bitmask & EBT_STP_MAXAGE) { ++ v16 = NR16(stpc->max_age); ++ if (FWINV(v16 < c->max_agel || ++ v16 > c->max_ageu, EBT_STP_MAXAGE)) ++ return EBT_NOMATCH; ++ } ++ if (info->bitmask & EBT_STP_HELLOTIME) { ++ v16 = NR16(stpc->hello_time); ++ if (FWINV(v16 < c->hello_timel || ++ v16 > c->hello_timeu, EBT_STP_HELLOTIME)) ++ return EBT_NOMATCH; ++ } ++ if (info->bitmask & EBT_STP_FWDD) { ++ v16 = NR16(stpc->forward_delay); ++ if (FWINV(v16 < c->forward_delayl || ++ v16 > c->forward_delayu, EBT_STP_FWDD)) ++ return EBT_NOMATCH; ++ } ++ return EBT_MATCH; ++} ++ ++static int ebt_filter_stp(const struct sk_buff *skb, const struct net_device *in, ++ const struct net_device *out, const void *data, unsigned int datalen) ++{ ++ struct ebt_stp_info *info = (struct ebt_stp_info *)data; ++ struct stp_header stph; ++ uint8_t header[6] = {0x42, 0x42, 0x03, 0x00, 0x00, 0x00}; ++ if (skb_copy_bits(skb, 0, &stph, sizeof(stph))) ++ return EBT_NOMATCH; ++ ++ /* The stp code only considers these */ ++ if (memcmp(&stph, header, sizeof(header))) ++ return EBT_NOMATCH; ++ ++ if (info->bitmask & EBT_STP_TYPE ++ && FWINV(info->type != stph.type, EBT_STP_TYPE)) ++ return EBT_NOMATCH; ++ ++ if (stph.type == BPDU_TYPE_CONFIG && ++ info->bitmask & EBT_STP_CONFIG_MASK) { ++ struct stp_config_pdu stpc; ++ ++ if (skb_copy_bits(skb, sizeof(stph), &stpc, sizeof(stpc))) ++ return EBT_NOMATCH; ++ return ebt_filter_config(info, &stpc); ++ } ++ return EBT_MATCH; ++} ++ ++static int ebt_stp_check(const char *tablename, unsigned int hookmask, ++ const struct ebt_entry *e, void *data, unsigned int datalen) ++{ ++ struct ebt_stp_info *info = (struct ebt_stp_info *)data; ++ int len = EBT_ALIGN(sizeof(struct ebt_stp_info)); ++ uint8_t bridge_ula[6] = { 0x01, 0x80, 0xc2, 0x00, 0x00, 0x00 }; ++ uint8_t msk[6] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; ++ ++ if (info->bitmask & ~EBT_STP_MASK || info->invflags & ~EBT_STP_MASK || ++ !(info->bitmask & EBT_STP_MASK)) ++ return -EINVAL; ++ if (datalen != len) ++ return -EINVAL; ++ /* Make sure the match only receives stp frames */ ++ if (memcmp(e->destmac, bridge_ula, ETH_ALEN) || ++ memcmp(e->destmsk, msk, ETH_ALEN) || !(e->bitmask & EBT_DESTMAC)) ++ return -EINVAL; ++ ++ return 0; ++} ++ ++static struct ebt_match filter_stp = ++{ ++ .name = EBT_STP_MATCH, ++ .match = ebt_filter_stp, ++ .check = ebt_stp_check, ++ .me = THIS_MODULE, ++}; ++ ++static int __init init(void) ++{ ++ return ebt_register_match(&filter_stp); ++} ++ ++static void __exit fini(void) ++{ ++ ebt_unregister_match(&filter_stp); ++} ++ ++module_init(init); ++module_exit(fini); ++EXPORT_NO_SYMBOLS; ++MODULE_LICENSE("GPL"); +diff -Nur linux-mips-cvs/net/bridge/netfilter/ebt_ulog.c linux-ebtables/net/bridge/netfilter/ebt_ulog.c +--- linux-mips-cvs/net/bridge/netfilter/ebt_ulog.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux-ebtables/net/bridge/netfilter/ebt_ulog.c 2005-02-07 05:52:50.000000000 +0100 +@@ -0,0 +1,281 @@ ++/* ++ * netfilter module for userspace bridged Ethernet frames logging daemons ++ * ++ * Authors: ++ * Bart De Schuymer <bdschuym@pandora.be> ++ * ++ * November, 2004 ++ * ++ * Based on ipt_ULOG.c, which is ++ * (C) 2000-2002 by Harald Welte <laforge@netfilter.org> ++ * ++ * This module accepts two parameters: ++ * ++ * nlbufsiz: ++ * The parameter specifies how big the buffer for each netlink multicast ++ * group is. e.g. If you say nlbufsiz=8192, up to eight kb of packets will ++ * get accumulated in the kernel until they are sent to userspace. It is ++ * NOT possible to allocate more than 128kB, and it is strongly discouraged, ++ * because atomically allocating 128kB inside the network rx softirq is not ++ * reliable. Please also keep in mind that this buffer size is allocated for ++ * each nlgroup you are using, so the total kernel memory usage increases ++ * by that factor. ++ * ++ * flushtimeout: ++ * Specify, after how many hundredths of a second the queue should be ++ * flushed even if it is not full yet. ++ * ++ */ ++ ++#include <linux/module.h> ++#include <linux/config.h> ++#include <linux/spinlock.h> ++#include <linux/socket.h> ++#include <linux/skbuff.h> ++#include <linux/kernel.h> ++#include <linux/timer.h> ++#include <linux/netlink.h> ++#include <linux/netdevice.h> ++#include <linux/module.h> ++#include <linux/netfilter_bridge/ebtables.h> ++#include <linux/netfilter_bridge/ebt_ulog.h> ++#include <net/sock.h> ++#include "../br_private.h" ++ ++#define PRINTR(format, args...) do { if (net_ratelimit()) \ ++ printk(format , ## args); } while (0) ++ ++static unsigned int nlbufsiz = 4096; ++MODULE_PARM(nlbufsiz, "i"); ++MODULE_PARM_DESC(nlbufsiz, "netlink buffer size (number of bytes) " ++ "(defaults to 4096)"); ++ ++static unsigned int flushtimeout = 10; ++MODULE_PARM(flushtimeout, "i"); ++MODULE_PARM_DESC(flushtimeout, "buffer flush timeout (hundredths of a second) " ++ "(defaults to 10)"); ++ ++typedef struct { ++ unsigned int qlen; /* number of nlmsgs' in the skb */ ++ struct nlmsghdr *lastnlh; /* netlink header of last msg in skb */ ++ struct sk_buff *skb; /* the pre-allocated skb */ ++ struct timer_list timer; /* the timer function */ ++ spinlock_t lock; /* the per-queue lock */ ++} ebt_ulog_buff_t; ++ ++static ebt_ulog_buff_t ulog_buffers[EBT_ULOG_MAXNLGROUPS]; ++static struct sock *ebtlognl; ++ ++/* send one ulog_buff_t to userspace */ ++static void ulog_send(unsigned int nlgroup) ++{ ++ ebt_ulog_buff_t *ub = &ulog_buffers[nlgroup]; ++ ++ if (timer_pending(&ub->timer)) ++ del_timer(&ub->timer); ++ ++ /* last nlmsg needs NLMSG_DONE */ ++ if (ub->qlen > 1) ++ ub->lastnlh->nlmsg_type = NLMSG_DONE; ++ ++ NETLINK_CB(ub->skb).dst_groups = 1 << nlgroup; ++ netlink_broadcast(ebtlognl, ub->skb, 0, 1 << nlgroup, GFP_ATOMIC); ++ ++ ub->qlen = 0; ++ ub->skb = NULL; ++} ++ ++/* timer function to flush queue in flushtimeout time */ ++static void ulog_timer(unsigned long data) ++{ ++ spin_lock_bh(&ulog_buffers[data].lock); ++ if (ulog_buffers[data].skb) ++ ulog_send(data); ++ spin_unlock_bh(&ulog_buffers[data].lock); ++} ++ ++static struct sk_buff *ulog_alloc_skb(unsigned int size) ++{ ++ struct sk_buff *skb; ++ ++ skb = alloc_skb(nlbufsiz, GFP_ATOMIC); ++ if (!skb) { ++ PRINTR(KERN_ERR "ebt_ulog: can't alloc whole buffer " ++ "of size %ub!\n", nlbufsiz); ++ if (size < nlbufsiz) { ++ /* try to allocate only as much as we need for ++ * current packet */ ++ skb = alloc_skb(size, GFP_ATOMIC); ++ if (!skb) ++ PRINTR(KERN_ERR "ebt_ulog: can't even allocate " ++ "buffer of size %ub\n", size); ++ } ++ } ++ ++ return skb; ++} ++ ++static void ebt_ulog(const struct sk_buff *skb, unsigned int hooknr, ++ const struct net_device *in, const struct net_device *out, ++ const void *data, unsigned int datalen) ++{ ++ ebt_ulog_packet_msg_t *pm; ++ size_t size, copy_len; ++ struct nlmsghdr *nlh; ++ struct ebt_ulog_info *loginfo = (struct ebt_ulog_info *)data; ++ unsigned int group = loginfo->nlgroup; ++ ebt_ulog_buff_t *ub = &ulog_buffers[group]; ++ spinlock_t *lock = &ub->lock; ++ ++ if ((loginfo->cprange == 0) || ++ (loginfo->cprange > skb->len + ETH_HLEN)) ++ copy_len = skb->len + ETH_HLEN; ++ else ++ copy_len = loginfo->cprange; ++ ++ size = NLMSG_SPACE(sizeof(*pm) + copy_len); ++ ++ spin_lock_bh(lock); ++ ++ if (!ub->skb) { ++ if (!(ub->skb = ulog_alloc_skb(size))) ++ goto alloc_failure; ++ } else if (size > skb_tailroom(ub->skb)) { ++ ulog_send(group); ++ ++ if (!(ub->skb = ulog_alloc_skb(size))) ++ goto alloc_failure; ++ } ++ ++ nlh = NLMSG_PUT(ub->skb, 0, ub->qlen, 0, ++ size - NLMSG_ALIGN(sizeof(*nlh))); ++ ub->qlen++; ++ ++ pm = NLMSG_DATA(nlh); ++ ++ /* Fill in the ulog data */ ++ do_gettimeofday(&pm->stamp); ++ if (ub->qlen == 1) ++ ub->skb->stamp = pm->stamp; ++ pm->data_len = copy_len; ++ pm->mark = skb->nfmark; ++ pm->hook = hooknr; ++ if (loginfo->prefix != NULL) ++ strcpy(pm->prefix, loginfo->prefix); ++ else ++ *(pm->prefix) = '\0'; ++ ++ if (in) { ++ strcpy(pm->physindev, in->name); ++ strcpy(pm->indev, in->br_port->br->dev.name); ++ } else ++ pm->indev[0] = pm->physindev[0] = '\0'; ++ ++ if (out) { ++ strcpy(pm->physoutdev, out->name); ++ strcpy(pm->outdev, out->br_port->br->dev.name); ++ } else ++ pm->outdev[0] = pm->physoutdev[0] = '\0'; ++ ++ if (skb_copy_bits(skb, -ETH_HLEN, pm->data, copy_len) < 0) ++ BUG(); ++ ++ if (ub->qlen > 1) ++ ub->lastnlh->nlmsg_flags |= NLM_F_MULTI; ++ ++ ub->lastnlh = nlh; ++ ++ if (ub->qlen >= loginfo->qthreshold) ++ ulog_send(group); ++ else if (!timer_pending(&ub->timer)) { ++ ub->timer.expires = jiffies + flushtimeout * HZ / 100; ++ add_timer(&ub->timer); ++ } ++ ++unlock: ++ spin_unlock_bh(lock); ++ ++ return; ++ ++nlmsg_failure: ++ PRINTR(KERN_ERR "ebt_ULOG: error during NLMSG_PUT.\n"); ++ goto unlock; ++alloc_failure: ++ goto unlock; ++} ++ ++static int ebt_ulog_check(const char *tablename, unsigned int hookmask, ++ const struct ebt_entry *e, void *data, unsigned int datalen) ++{ ++ struct ebt_ulog_info *loginfo = (struct ebt_ulog_info *)data; ++ ++ if (datalen != EBT_ALIGN(sizeof(struct ebt_ulog_info)) || ++ loginfo->nlgroup > 31) ++ return -EINVAL; ++ ++ loginfo->prefix[EBT_ULOG_PREFIX_LEN - 1] = '\0'; ++ ++ if (loginfo->qthreshold > EBT_ULOG_MAX_QLEN) ++ loginfo->qthreshold = EBT_ULOG_MAX_QLEN; ++ ++ return 0; ++} ++ ++static struct ebt_watcher ulog = { ++ {NULL, NULL}, EBT_ULOG_WATCHER, ebt_ulog, ebt_ulog_check, NULL, ++ THIS_MODULE ++}; ++ ++static int __init init(void) ++{ ++ int i, ret = 0; ++ ++ if (nlbufsiz >= 128*1024) { ++ printk(KERN_NOTICE "ebt_ulog: Netlink buffer has to be <= 128kB," ++ " please try a smaller nlbufsiz parameter.\n"); ++ return -EINVAL; ++ } ++ ++ /* initialize ulog_buffers */ ++ for (i = 0; i < EBT_ULOG_MAXNLGROUPS; i++) { ++ init_timer(&ulog_buffers[i].timer); ++ ulog_buffers[i].timer.function = ulog_timer; ++ ulog_buffers[i].timer.data = i; ++ ulog_buffers[i].lock = SPIN_LOCK_UNLOCKED; ++ } ++ ++ ebtlognl = netlink_kernel_create(NETLINK_NFLOG, NULL); ++ if (!ebtlognl) ++ ret = -ENOMEM; ++ else if ((ret = ebt_register_watcher(&ulog))) ++ sock_release(ebtlognl->socket); ++ ++ return ret; ++} ++ ++static void __exit fini(void) ++{ ++ ebt_ulog_buff_t *ub; ++ int i; ++ ++ ebt_unregister_watcher(&ulog); ++ for (i = 0; i < EBT_ULOG_MAXNLGROUPS; i++) { ++ ub = &ulog_buffers[i]; ++ if (timer_pending(&ub->timer)) ++ del_timer(&ub->timer); ++ spin_lock_bh(&ub->lock); ++ if (ub->skb) { ++ kfree_skb(ub->skb); ++ ub->skb = NULL; ++ } ++ spin_unlock_bh(&ub->lock); ++ } ++ sock_release(ebtlognl->socket); ++} ++ ++module_init(init); ++module_exit(fini); ++MODULE_LICENSE("GPL"); ++MODULE_AUTHOR("Bart De Schuymer <bdschuym@pandora.be>"); ++MODULE_DESCRIPTION("ebtables userspace logging module for bridged Ethernet" ++ " frames"); +diff -Nur linux-mips-cvs/net/bridge/netfilter/ebt_vlan.c linux-ebtables/net/bridge/netfilter/ebt_vlan.c +--- linux-mips-cvs/net/bridge/netfilter/ebt_vlan.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux-ebtables/net/bridge/netfilter/ebt_vlan.c 2005-02-07 05:52:50.000000000 +0100 +@@ -0,0 +1,259 @@ ++/* ++ * Description: EBTables 802.1Q match extension kernelspace module. ++ * Authors: Nick Fedchik <nick@fedchik.org.ua> ++ * Bart De Schuymer <bart.de.schuymer@pandora.be> ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU General Public License as published by ++ * the Free Software Foundation; either version 2 of the License, or ++ * (at your option) any later version. ++ * ++ * This program is distributed in the hope that it will be useful, ++ * but WITHOUT ANY WARRANTY; without even the implied warranty of ++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ++ * GNU General Public License for more details. ++ * ++ * You should have received a copy of the GNU General Public License ++ * along with this program; if not, write to the Free Software ++ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA ++ */ ++ ++#include <linux/if_ether.h> ++#include <linux/if_vlan.h> ++#include <linux/module.h> ++#include <linux/netfilter_bridge/ebtables.h> ++#include <linux/netfilter_bridge/ebt_vlan.h> ++ ++static unsigned char debug; ++#define MODULE_VERSION "0.6" ++ ++MODULE_PARM(debug, "0-1b"); ++MODULE_PARM_DESC(debug, "debug=1 is turn on debug messages"); ++MODULE_AUTHOR("Nick Fedchik <nick@fedchik.org.ua>"); ++MODULE_DESCRIPTION("802.1Q match module (ebtables extension), v" ++ MODULE_VERSION); ++MODULE_LICENSE("GPL"); ++ ++ ++#define DEBUG_MSG(args...) if (debug) printk (KERN_DEBUG "ebt_vlan: " args) ++#define INV_FLAG(_inv_flag_) (info->invflags & _inv_flag_) ? "!" : "" ++#define GET_BITMASK(_BIT_MASK_) info->bitmask & _BIT_MASK_ ++#define SET_BITMASK(_BIT_MASK_) info->bitmask |= _BIT_MASK_ ++#define EXIT_ON_MISMATCH(_MATCH_,_MASK_) if (!((info->_MATCH_ == _MATCH_)^!!(info->invflags & _MASK_))) return 1; ++ ++/* ++ * Function description: ebt_filter_vlan() is main engine for ++ * checking passed 802.1Q frame according to ++ * the passed extension parameters (in the *data buffer) ++ * ebt_filter_vlan() is called after successfull check the rule params ++ * by ebt_check_vlan() function. ++ * Parameters: ++ * const struct sk_buff *skb - pointer to passed ethernet frame buffer ++ * const void *data - pointer to passed extension parameters ++ * unsigned int datalen - length of passed *data buffer ++ * const struct net_device *in - ++ * const struct net_device *out - ++ * const struct ebt_counter *c - ++ * Returned values: ++ * 0 - ok (all rule params matched) ++ * 1 - miss (rule params not acceptable to the parsed frame) ++ */ ++static int ++ebt_filter_vlan(const struct sk_buff *skb, ++ const struct net_device *in, ++ const struct net_device *out, ++ const void *data, unsigned int datalen) ++{ ++ struct ebt_vlan_info *info = (struct ebt_vlan_info *) data; /* userspace data */ ++ struct vlan_ethhdr *frame = (struct vlan_ethhdr *) skb->mac.raw; /* Passed tagged frame */ ++ ++ unsigned short TCI; /* Whole TCI, given from parsed frame */ ++ unsigned short id; /* VLAN ID, given from frame TCI */ ++ unsigned char prio; /* user_priority, given from frame TCI */ ++ unsigned short encap; /* VLAN encapsulated Type/Length field, given from orig frame */ ++ ++ /* ++ * Tag Control Information (TCI) consists of the following elements: ++ * - User_priority. The user_priority field is three bits in length, ++ * interpreted as a binary number. ++ * - Canonical Format Indicator (CFI). The Canonical Format Indicator ++ * (CFI) is a single bit flag value. Currently ignored. ++ * - VLAN Identifier (VID). The VID is encoded as ++ * an unsigned binary number. ++ */ ++ TCI = ntohs(frame->h_vlan_TCI); ++ id = TCI & VLAN_VID_MASK; ++ prio = (TCI >> 13) & 0x7; ++ encap = frame->h_vlan_encapsulated_proto; ++ ++ /* ++ * Checking VLAN Identifier (VID) ++ */ ++ if (GET_BITMASK(EBT_VLAN_ID)) { /* Is VLAN ID parsed? */ ++ EXIT_ON_MISMATCH(id, EBT_VLAN_ID); ++ } ++ /* ++ * Checking user_priority ++ */ ++ if (GET_BITMASK(EBT_VLAN_PRIO)) { /* Is VLAN user_priority parsed? */ ++ EXIT_ON_MISMATCH(prio, EBT_VLAN_PRIO); ++ } ++ /* ++ * Checking Encapsulated Proto (Length/Type) field ++ */ ++ if (GET_BITMASK(EBT_VLAN_ENCAP)) { /* Is VLAN Encap parsed? */ ++ EXIT_ON_MISMATCH(encap, EBT_VLAN_ENCAP); ++ } ++ /* ++ * All possible extension parameters was parsed. ++ * If rule never returned by missmatch, then all ok. ++ */ ++ return 0; ++} ++ ++/* ++ * Function description: ebt_vlan_check() is called when userspace ++ * delivers the table entry to the kernel, ++ * and to check that userspace doesn't give a bad table. ++ * Parameters: ++ * const char *tablename - table name string ++ * unsigned int hooknr - hook number ++ * const struct ebt_entry *e - ebtables entry basic set ++ * const void *data - pointer to passed extension parameters ++ * unsigned int datalen - length of passed *data buffer ++ * Returned values: ++ * 0 - ok (all delivered rule params are correct) ++ * 1 - miss (rule params is out of range, invalid, incompatible, etc.) ++ */ ++static int ++ebt_check_vlan(const char *tablename, ++ unsigned int hooknr, ++ const struct ebt_entry *e, void *data, unsigned int datalen) ++{ ++ struct ebt_vlan_info *info = (struct ebt_vlan_info *) data; ++ ++ /* ++ * Parameters buffer overflow check ++ */ ++ if (datalen != EBT_ALIGN(sizeof(struct ebt_vlan_info))) { ++ DEBUG_MSG ++ ("passed size %d is not eq to ebt_vlan_info (%d)\n", ++ datalen, sizeof(struct ebt_vlan_info)); ++ return -EINVAL; ++ } ++ ++ /* ++ * Is it 802.1Q frame checked? ++ */ ++ if (e->ethproto != __constant_htons(ETH_P_8021Q)) { ++ DEBUG_MSG ++ ("passed entry proto %2.4X is not 802.1Q (8100)\n", ++ (unsigned short) ntohs(e->ethproto)); ++ return -EINVAL; ++ } ++ ++ /* ++ * Check for bitmask range ++ * True if even one bit is out of mask ++ */ ++ if (info->bitmask & ~EBT_VLAN_MASK) { ++ DEBUG_MSG("bitmask %2X is out of mask (%2X)\n", ++ info->bitmask, EBT_VLAN_MASK); ++ return -EINVAL; ++ } ++ ++ /* ++ * Check for inversion flags range ++ */ ++ if (info->invflags & ~EBT_VLAN_MASK) { ++ DEBUG_MSG("inversion flags %2X is out of mask (%2X)\n", ++ info->invflags, EBT_VLAN_MASK); ++ return -EINVAL; ++ } ++ ++ /* ++ * Reserved VLAN ID (VID) values ++ * ----------------------------- ++ * 0 - The null VLAN ID. ++ * 1 - The default Port VID (PVID) ++ * 0x0FFF - Reserved for implementation use. ++ * if_vlan.h: VLAN_GROUP_ARRAY_LEN 4096. ++ */ ++ if (GET_BITMASK(EBT_VLAN_ID)) { /* when vlan-id param was spec-ed */ ++ if (!!info->id) { /* if id!=0 => check vid range */ ++ if (info->id > VLAN_GROUP_ARRAY_LEN) { ++ DEBUG_MSG ++ ("id %d is out of range (1-4096)\n", ++ info->id); ++ return -EINVAL; ++ } ++ /* ++ * Note: This is valid VLAN-tagged frame point. ++ * Any value of user_priority are acceptable, ++ * but should be ignored according to 802.1Q Std. ++ * So we just drop the prio flag. ++ */ ++ info->bitmask &= ~EBT_VLAN_PRIO; ++ } ++ /* ++ * Else, id=0 (null VLAN ID) => user_priority range (any?) ++ */ ++ } ++ ++ if (GET_BITMASK(EBT_VLAN_PRIO)) { ++ if ((unsigned char) info->prio > 7) { ++ DEBUG_MSG ++ ("prio %d is out of range (0-7)\n", ++ info->prio); ++ return -EINVAL; ++ } ++ } ++ /* ++ * Check for encapsulated proto range - it is possible to be ++ * any value for u_short range. ++ * if_ether.h: ETH_ZLEN 60 - Min. octets in frame sans FCS ++ */ ++ if (GET_BITMASK(EBT_VLAN_ENCAP)) { ++ if ((unsigned short) ntohs(info->encap) < ETH_ZLEN) { ++ DEBUG_MSG ++ ("encap frame length %d is less than minimal\n", ++ ntohs(info->encap)); ++ return -EINVAL; ++ } ++ } ++ ++ return 0; ++} ++ ++static struct ebt_match filter_vlan = { ++ {NULL, NULL}, ++ EBT_VLAN_MATCH, ++ ebt_filter_vlan, ++ ebt_check_vlan, ++ NULL, ++ THIS_MODULE ++}; ++ ++/* ++ * Module initialization function. ++ */ ++static int __init init(void) ++{ ++ DEBUG_MSG("ebtables 802.1Q extension module v" ++ MODULE_VERSION "\n"); ++ DEBUG_MSG("module debug=%d\n", !!debug); ++ return ebt_register_match(&filter_vlan); ++} ++ ++/* ++ * Module "finalization" function ++ */ ++static void __exit fini(void) ++{ ++ ebt_unregister_match(&filter_vlan); ++} ++ ++module_init(init); ++module_exit(fini); ++ ++EXPORT_NO_SYMBOLS; +diff -Nur linux-mips-cvs/net/bridge/netfilter/ebtable_broute.c linux-ebtables/net/bridge/netfilter/ebtable_broute.c +--- linux-mips-cvs/net/bridge/netfilter/ebtable_broute.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux-ebtables/net/bridge/netfilter/ebtable_broute.c 2005-02-07 05:52:50.000000000 +0100 +@@ -0,0 +1,79 @@ ++/* ++ * ebtable_broute ++ * ++ * Authors: ++ * Bart De Schuymer <bart.de.schuymer@pandora.be> ++ * ++ * April, 2002 ++ * ++ * This table lets you choose between routing and bridging for frames ++ * entering on a bridge enslaved nic. This table is traversed before any ++ * other ebtables table. See net/bridge/br_input.c. ++ */ ++ ++#include <linux/netfilter_bridge/ebtables.h> ++#include <linux/module.h> ++#include <linux/if_bridge.h> ++#include <linux/brlock.h> ++ ++// EBT_ACCEPT means the frame will be bridged ++// EBT_DROP means the frame will be routed ++static struct ebt_entries initial_chain = ++ {0, "BROUTING", 0, EBT_ACCEPT, 0}; ++ ++static struct ebt_replace initial_table = ++{ ++ "broute", 1 << NF_BR_BROUTING, 0, sizeof(struct ebt_entries), ++ { [NF_BR_BROUTING]&initial_chain}, 0, NULL, (char *)&initial_chain ++}; ++ ++static int check(const struct ebt_table_info *info, unsigned int valid_hooks) ++{ ++ if (valid_hooks & ~(1 << NF_BR_BROUTING)) ++ return -EINVAL; ++ return 0; ++} ++ ++static struct ebt_table broute_table = ++{ ++ {NULL, NULL}, "broute", &initial_table, 1 << NF_BR_BROUTING, ++ RW_LOCK_UNLOCKED, check, NULL ++}; ++ ++static int ebt_broute(struct sk_buff **pskb) ++{ ++ int ret; ++ ++ ret = ebt_do_table(NF_BR_BROUTING, pskb, (*pskb)->dev, NULL, ++ &broute_table); ++ if (ret == NF_DROP) ++ return 1; // route it ++ return 0; // bridge it ++} ++ ++static int __init init(void) ++{ ++ int ret; ++ ++ ret = ebt_register_table(&broute_table); ++ if (ret < 0) ++ return ret; ++ br_write_lock_bh(BR_NETPROTO_LOCK); ++ // see br_input.c ++ br_should_route_hook = ebt_broute; ++ br_write_unlock_bh(BR_NETPROTO_LOCK); ++ return ret; ++} ++ ++static void __exit fini(void) ++{ ++ br_write_lock_bh(BR_NETPROTO_LOCK); ++ br_should_route_hook = NULL; ++ br_write_unlock_bh(BR_NETPROTO_LOCK); ++ ebt_unregister_table(&broute_table); ++} ++ ++module_init(init); ++module_exit(fini); ++EXPORT_NO_SYMBOLS; ++MODULE_LICENSE("GPL"); +diff -Nur linux-mips-cvs/net/bridge/netfilter/ebtable_filter.c linux-ebtables/net/bridge/netfilter/ebtable_filter.c +--- linux-mips-cvs/net/bridge/netfilter/ebtable_filter.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux-ebtables/net/bridge/netfilter/ebtable_filter.c 2005-02-07 05:52:50.000000000 +0100 +@@ -0,0 +1,90 @@ ++/* ++ * ebtable_filter ++ * ++ * Authors: ++ * Bart De Schuymer <bart.de.schuymer@pandora.be> ++ * ++ * April, 2002 ++ * ++ */ ++ ++#include <linux/netfilter_bridge/ebtables.h> ++#include <linux/module.h> ++ ++#define FILTER_VALID_HOOKS ((1 << NF_BR_LOCAL_IN) | (1 << NF_BR_FORWARD) | \ ++ (1 << NF_BR_LOCAL_OUT)) ++ ++static struct ebt_entries initial_chains[] = ++{ ++ {0, "INPUT", 0, EBT_ACCEPT, 0}, ++ {0, "FORWARD", 0, EBT_ACCEPT, 0}, ++ {0, "OUTPUT", 0, EBT_ACCEPT, 0} ++}; ++ ++static struct ebt_replace initial_table = ++{ ++ "filter", FILTER_VALID_HOOKS, 0, 3 * sizeof(struct ebt_entries), ++ { [NF_BR_LOCAL_IN]&initial_chains[0], [NF_BR_FORWARD]&initial_chains[1], ++ [NF_BR_LOCAL_OUT]&initial_chains[2] }, 0, NULL, (char *)initial_chains ++}; ++ ++static int check(const struct ebt_table_info *info, unsigned int valid_hooks) ++{ ++ if (valid_hooks & ~FILTER_VALID_HOOKS) ++ return -EINVAL; ++ return 0; ++} ++ ++static struct ebt_table frame_filter = ++{ ++ {NULL, NULL}, "filter", &initial_table, FILTER_VALID_HOOKS, ++ RW_LOCK_UNLOCKED, check, NULL ++}; ++ ++static unsigned int ++ebt_hook (unsigned int hook, struct sk_buff **pskb, const struct net_device *in, ++ const struct net_device *out, int (*okfn)(struct sk_buff *)) ++{ ++ return ebt_do_table(hook, pskb, in, out, &frame_filter); ++} ++ ++static struct nf_hook_ops ebt_ops_filter[] = { ++ { { NULL, NULL }, ebt_hook, PF_BRIDGE, NF_BR_LOCAL_IN, ++ NF_BR_PRI_FILTER_BRIDGED}, ++ { { NULL, NULL }, ebt_hook, PF_BRIDGE, NF_BR_FORWARD, ++ NF_BR_PRI_FILTER_BRIDGED}, ++ { { NULL, NULL }, ebt_hook, PF_BRIDGE, NF_BR_LOCAL_OUT, ++ NF_BR_PRI_FILTER_OTHER} ++}; ++ ++static int __init init(void) ++{ ++ int i, j, ret; ++ ++ ret = ebt_register_table(&frame_filter); ++ if (ret < 0) ++ return ret; ++ for (i = 0; i < sizeof(ebt_ops_filter) / sizeof(ebt_ops_filter[0]); i++) ++ if ((ret = nf_register_hook(&ebt_ops_filter[i])) < 0) ++ goto cleanup; ++ return ret; ++cleanup: ++ for (j = 0; j < i; j++) ++ nf_unregister_hook(&ebt_ops_filter[j]); ++ ebt_unregister_table(&frame_filter); ++ return ret; ++} ++ ++static void __exit fini(void) ++{ ++ int i; ++ ++ for (i = 0; i < sizeof(ebt_ops_filter) / sizeof(ebt_ops_filter[0]); i++) ++ nf_unregister_hook(&ebt_ops_filter[i]); ++ ebt_unregister_table(&frame_filter); ++} ++ ++module_init(init); ++module_exit(fini); ++EXPORT_NO_SYMBOLS; ++MODULE_LICENSE("GPL"); +diff -Nur linux-mips-cvs/net/bridge/netfilter/ebtable_nat.c linux-ebtables/net/bridge/netfilter/ebtable_nat.c +--- linux-mips-cvs/net/bridge/netfilter/ebtable_nat.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux-ebtables/net/bridge/netfilter/ebtable_nat.c 2005-02-07 05:52:50.000000000 +0100 +@@ -0,0 +1,96 @@ ++/* ++ * ebtable_nat ++ * ++ * Authors: ++ * Bart De Schuymer <bart.de.schuymer@pandora.be> ++ * ++ * April, 2002 ++ * ++ */ ++ ++#include <linux/netfilter_bridge/ebtables.h> ++#include <linux/module.h> ++#define NAT_VALID_HOOKS ((1 << NF_BR_PRE_ROUTING) | (1 << NF_BR_LOCAL_OUT) | \ ++ (1 << NF_BR_POST_ROUTING)) ++ ++static struct ebt_entries initial_chains[] = ++{ ++ {0, "PREROUTING", 0, EBT_ACCEPT, 0}, ++ {0, "OUTPUT", 0, EBT_ACCEPT, 0}, ++ {0, "POSTROUTING", 0, EBT_ACCEPT, 0} ++}; ++ ++static struct ebt_replace initial_table = ++{ ++ "nat", NAT_VALID_HOOKS, 0, 3 * sizeof(struct ebt_entries), ++ { [NF_BR_PRE_ROUTING]&initial_chains[0], [NF_BR_LOCAL_OUT]&initial_chains[1], ++ [NF_BR_POST_ROUTING]&initial_chains[2] }, 0, NULL, (char *)initial_chains ++}; ++ ++static int check(const struct ebt_table_info *info, unsigned int valid_hooks) ++{ ++ if (valid_hooks & ~NAT_VALID_HOOKS) ++ return -EINVAL; ++ return 0; ++} ++ ++static struct ebt_table frame_nat = ++{ ++ {NULL, NULL}, "nat", &initial_table, NAT_VALID_HOOKS, ++ RW_LOCK_UNLOCKED, check, NULL ++}; ++ ++static unsigned int ++ebt_nat_dst(unsigned int hook, struct sk_buff **pskb, const struct net_device *in ++ , const struct net_device *out, int (*okfn)(struct sk_buff *)) ++{ ++ return ebt_do_table(hook, pskb, in, out, &frame_nat); ++} ++ ++static unsigned int ++ebt_nat_src(unsigned int hook, struct sk_buff **pskb, const struct net_device *in ++ , const struct net_device *out, int (*okfn)(struct sk_buff *)) ++{ ++ return ebt_do_table(hook, pskb, in, out, &frame_nat); ++} ++ ++static struct nf_hook_ops ebt_ops_nat[] = { ++ { { NULL, NULL }, ebt_nat_dst, PF_BRIDGE, NF_BR_LOCAL_OUT, ++ NF_BR_PRI_NAT_DST_OTHER}, ++ { { NULL, NULL }, ebt_nat_src, PF_BRIDGE, NF_BR_POST_ROUTING, ++ NF_BR_PRI_NAT_SRC}, ++ { { NULL, NULL }, ebt_nat_dst, PF_BRIDGE, NF_BR_PRE_ROUTING, ++ NF_BR_PRI_NAT_DST_BRIDGED}, ++}; ++ ++static int __init init(void) ++{ ++ int i, ret, j; ++ ++ ret = ebt_register_table(&frame_nat); ++ if (ret < 0) ++ return ret; ++ for (i = 0; i < sizeof(ebt_ops_nat) / sizeof(ebt_ops_nat[0]); i++) ++ if ((ret = nf_register_hook(&ebt_ops_nat[i])) < 0) ++ goto cleanup; ++ return ret; ++cleanup: ++ for (j = 0; j < i; j++) ++ nf_unregister_hook(&ebt_ops_nat[j]); ++ ebt_unregister_table(&frame_nat); ++ return ret; ++} ++ ++static void __exit fini(void) ++{ ++ int i; ++ ++ for (i = 0; i < sizeof(ebt_ops_nat) / sizeof(ebt_ops_nat[0]); i++) ++ nf_unregister_hook(&ebt_ops_nat[i]); ++ ebt_unregister_table(&frame_nat); ++} ++ ++module_init(init); ++module_exit(fini); ++EXPORT_NO_SYMBOLS; ++MODULE_LICENSE("GPL"); +diff -Nur linux-mips-cvs/net/bridge/netfilter/ebtables.c linux-ebtables/net/bridge/netfilter/ebtables.c +--- linux-mips-cvs/net/bridge/netfilter/ebtables.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux-ebtables/net/bridge/netfilter/ebtables.c 2005-02-07 05:52:50.000000000 +0100 +@@ -0,0 +1,1496 @@ ++/* ++ * ebtables ++ * ++ * Author: ++ * Bart De Schuymer <bart.de.schuymer@pandora.be> ++ * ++ * ebtables.c,v 2.0, July, 2002 ++ * ++ * This code is stongly inspired on the iptables code which is ++ * Copyright (C) 1999 Paul `Rusty' Russell & Michael J. Neuling ++ * ++ * This program is free software; you can redistribute it and/or ++ * modify it under the terms of the GNU General Public License ++ * as published by the Free Software Foundation; either version ++ * 2 of the License, or (at your option) any later version. ++ */ ++ ++// used for print_string ++#include <linux/sched.h> ++#include <linux/tty.h> ++ ++#include <linux/kmod.h> ++#include <linux/module.h> ++#include <linux/vmalloc.h> ++#include <linux/netfilter_bridge/ebtables.h> ++#include <linux/spinlock.h> ++#include <asm/uaccess.h> ++#include <linux/smp.h> ++#include <net/sock.h> ++// needed for logical [in,out]-dev filtering ++#include "../br_private.h" ++ ++// list_named_find ++#define ASSERT_READ_LOCK(x) ++#define ASSERT_WRITE_LOCK(x) ++#include <linux/netfilter_ipv4/listhelp.h> ++ ++#if 0 // use this for remote debugging ++// Copyright (C) 1998 by Ori Pomerantz ++// Print the string to the appropriate tty, the one ++// the current task uses ++static void print_string(char *str) ++{ ++ struct tty_struct *my_tty; ++ ++ /* The tty for the current task */ ++ my_tty = current->tty; ++ if (my_tty != NULL) { ++ (*(my_tty->driver).write)(my_tty, 0, str, strlen(str)); ++ (*(my_tty->driver).write)(my_tty, 0, "\015\012", 2); ++ } ++} ++ ++#define BUGPRINT(args) print_string(args); ++#else ++#define BUGPRINT(format, args...) printk("kernel msg: ebtables bug: please "\ ++ "report to author: "format, ## args) ++// #define BUGPRINT(format, args...) ++#endif ++#define MEMPRINT(format, args...) printk("kernel msg: ebtables "\ ++ ": out of memory: "format, ## args) ++// #define MEMPRINT(format, args...) ++ ++ ++ ++// Each cpu has its own set of counters, so there is no need for write_lock in ++// the softirq ++// For reading or updating the counters, the user context needs to ++// get a write_lock ++ ++// The size of each set of counters is altered to get cache alignment ++#define SMP_ALIGN(x) (((x) + SMP_CACHE_BYTES-1) & ~(SMP_CACHE_BYTES-1)) ++#define COUNTER_OFFSET(n) (SMP_ALIGN(n * sizeof(struct ebt_counter))) ++#define COUNTER_BASE(c, n, cpu) ((struct ebt_counter *)(((char *)c) + \ ++ COUNTER_OFFSET(n) * cpu)) ++ ++ ++ ++static DECLARE_MUTEX(ebt_mutex); ++static LIST_HEAD(ebt_tables); ++static LIST_HEAD(ebt_targets); ++static LIST_HEAD(ebt_matches); ++static LIST_HEAD(ebt_watchers); ++ ++static struct ebt_target ebt_standard_target = ++{ {NULL, NULL}, EBT_STANDARD_TARGET, NULL, NULL, NULL, NULL}; ++ ++static inline int ebt_do_watcher (struct ebt_entry_watcher *w, ++ const struct sk_buff *skb, unsigned int hooknr, const struct net_device *in, ++ const struct net_device *out) ++{ ++ w->u.watcher->watcher(skb, hooknr, in, out, w->data, ++ w->watcher_size); ++ // watchers don't give a verdict ++ return 0; ++} ++ ++static inline int ebt_do_match (struct ebt_entry_match *m, ++ const struct sk_buff *skb, const struct net_device *in, ++ const struct net_device *out) ++{ ++ return m->u.match->match(skb, in, out, m->data, ++ m->match_size); ++} ++ ++static inline int ebt_dev_check(char *entry, const struct net_device *device) ++{ ++ int i = 0; ++ char *devname = device->name; ++ ++ if (*entry == '\0') ++ return 0; ++ if (!device) ++ return 1; ++ /* 1 is the wildcard token */ ++ while (entry[i] != '\0' && entry[i] != 1 && entry[i] == devname[i]) ++ i++; ++ return (devname[i] != entry[i] && entry[i] != 1); ++} ++ ++#define FWINV2(bool,invflg) ((bool) ^ !!(e->invflags & invflg)) ++// process standard matches ++static inline int ebt_basic_match(struct ebt_entry *e, struct ethhdr *h, ++ const struct net_device *in, const struct net_device *out) ++{ ++ int verdict, i; ++ ++ if (e->bitmask & EBT_802_3) { ++ if (FWINV2(ntohs(h->h_proto) >= 1536, EBT_IPROTO)) ++ return 1; ++ } else if (!(e->bitmask & EBT_NOPROTO) && ++ FWINV2(e->ethproto != h->h_proto, EBT_IPROTO)) ++ return 1; ++ ++ if (FWINV2(ebt_dev_check(e->in, in), EBT_IIN)) ++ return 1; ++ if (FWINV2(ebt_dev_check(e->out, out), EBT_IOUT)) ++ return 1; ++ if ((!in || !in->br_port) ? 0 : FWINV2(ebt_dev_check( ++ e->logical_in, &in->br_port->br->dev), EBT_ILOGICALIN)) ++ return 1; ++ if ((!out || !out->br_port) ? 0 : FWINV2(ebt_dev_check( ++ e->logical_out, &out->br_port->br->dev), EBT_ILOGICALOUT)) ++ return 1; ++ ++ if (e->bitmask & EBT_SOURCEMAC) { ++ verdict = 0; ++ for (i = 0; i < 6; i++) ++ verdict |= (h->h_source[i] ^ e->sourcemac[i]) & ++ e->sourcemsk[i]; ++ if (FWINV2(verdict != 0, EBT_ISOURCE) ) ++ return 1; ++ } ++ if (e->bitmask & EBT_DESTMAC) { ++ verdict = 0; ++ for (i = 0; i < 6; i++) ++ verdict |= (h->h_dest[i] ^ e->destmac[i]) & ++ e->destmsk[i]; ++ if (FWINV2(verdict != 0, EBT_IDEST) ) ++ return 1; ++ } ++ return 0; ++} ++ ++// Do some firewalling ++unsigned int ebt_do_table (unsigned int hook, struct sk_buff **pskb, ++ const struct net_device *in, const struct net_device *out, ++ struct ebt_table *table) ++{ ++ int i, nentries; ++ struct ebt_entry *point; ++ struct ebt_counter *counter_base, *cb_base; ++ struct ebt_entry_target *t; ++ int verdict, sp = 0; ++ struct ebt_chainstack *cs; ++ struct ebt_entries *chaininfo; ++ char *base; ++ struct ebt_table_info *private = table->private; ++ ++ read_lock_bh(&table->lock); ++ cb_base = COUNTER_BASE(private->counters, private->nentries, ++ cpu_number_map(smp_processor_id())); ++ if (private->chainstack) ++ cs = private->chainstack[cpu_number_map(smp_processor_id())]; ++ else ++ cs = NULL; ++ chaininfo = private->hook_entry[hook]; ++ nentries = private->hook_entry[hook]->nentries; ++ point = (struct ebt_entry *)(private->hook_entry[hook]->data); ++ counter_base = cb_base + private->hook_entry[hook]->counter_offset; ++ // base for chain jumps ++ base = private->entries; ++ i = 0; ++ while (i < nentries) { ++ if (ebt_basic_match(point, (**pskb).mac.ethernet, in, out)) ++ goto letscontinue; ++ ++ if (EBT_MATCH_ITERATE(point, ebt_do_match, *pskb, in, out) != 0) ++ goto letscontinue; ++ ++ // increase counter ++ (*(counter_base + i)).pcnt++; ++ (*(counter_base + i)).bcnt+=(**pskb).len; ++ ++ // these should only watch: not modify, nor tell us ++ // what to do with the packet ++ EBT_WATCHER_ITERATE(point, ebt_do_watcher, *pskb, hook, in, ++ out); ++ ++ t = (struct ebt_entry_target *) ++ (((char *)point) + point->target_offset); ++ // standard target ++ if (!t->u.target->target) ++ verdict = ((struct ebt_standard_target *)t)->verdict; ++ else ++ verdict = t->u.target->target(pskb, hook, ++ in, out, t->data, t->target_size); ++ if (verdict == EBT_ACCEPT) { ++ read_unlock_bh(&table->lock); ++ return NF_ACCEPT; ++ } ++ if (verdict == EBT_DROP) { ++ read_unlock_bh(&table->lock); ++ return NF_DROP; ++ } ++ if (verdict == EBT_RETURN) { ++letsreturn: ++#ifdef CONFIG_NETFILTER_DEBUG ++ if (sp == 0) { ++ BUGPRINT("RETURN on base chain"); ++ // act like this is EBT_CONTINUE ++ goto letscontinue; ++ } ++#endif ++ sp--; ++ // put all the local variables right ++ i = cs[sp].n; ++ chaininfo = cs[sp].chaininfo; ++ nentries = chaininfo->nentries; ++ point = cs[sp].e; ++ counter_base = cb_base + ++ chaininfo->counter_offset; ++ continue; ++ } ++ if (verdict == EBT_CONTINUE) ++ goto letscontinue; ++#ifdef CONFIG_NETFILTER_DEBUG ++ if (verdict < 0) { ++ BUGPRINT("bogus standard verdict\n"); ++ read_unlock_bh(&table->lock); ++ return NF_DROP; ++ } ++#endif ++ // jump to a udc ++ cs[sp].n = i + 1; ++ cs[sp].chaininfo = chaininfo; ++ cs[sp].e = (struct ebt_entry *) ++ (((char *)point) + point->next_offset); ++ i = 0; ++ chaininfo = (struct ebt_entries *) (base + verdict); ++#ifdef CONFIG_NETFILTER_DEBUG ++ if (chaininfo->distinguisher) { ++ BUGPRINT("jump to non-chain\n"); ++ read_unlock_bh(&table->lock); ++ return NF_DROP; ++ } ++#endif ++ nentries = chaininfo->nentries; ++ point = (struct ebt_entry *)chaininfo->data; ++ counter_base = cb_base + chaininfo->counter_offset; ++ sp++; ++ continue; ++letscontinue: ++ point = (struct ebt_entry *) ++ (((char *)point) + point->next_offset); ++ i++; ++ } ++ ++ // I actually like this :) ++ if (chaininfo->policy == EBT_RETURN) ++ goto letsreturn; ++ if (chaininfo->policy == EBT_ACCEPT) { ++ read_unlock_bh(&table->lock); ++ return NF_ACCEPT; ++ } ++ read_unlock_bh(&table->lock); ++ return NF_DROP; ++} ++ ++// If it succeeds, returns element and locks mutex ++static inline void * ++find_inlist_lock_noload(struct list_head *head, const char *name, int *error, ++ struct semaphore *mutex) ++{ ++ void *ret; ++ ++ *error = down_interruptible(mutex); ++ if (*error != 0) ++ return NULL; ++ ++ ret = list_named_find(head, name); ++ if (!ret) { ++ *error = -ENOENT; ++ up(mutex); ++ } ++ return ret; ++} ++ ++#ifndef CONFIG_KMOD ++#define find_inlist_lock(h,n,p,e,m) find_inlist_lock_noload((h),(n),(e),(m)) ++#else ++static void * ++find_inlist_lock(struct list_head *head, const char *name, const char *prefix, ++ int *error, struct semaphore *mutex) ++{ ++ void *ret; ++ ++ ret = find_inlist_lock_noload(head, name, error, mutex); ++ if (!ret) { ++ char modulename[EBT_FUNCTION_MAXNAMELEN + strlen(prefix) + 1]; ++ strcpy(modulename, prefix); ++ strcat(modulename, name); ++ request_module(modulename); ++ ret = find_inlist_lock_noload(head, name, error, mutex); ++ } ++ return ret; ++} ++#endif ++ ++static inline struct ebt_table * ++find_table_lock(const char *name, int *error, struct semaphore *mutex) ++{ ++ return find_inlist_lock(&ebt_tables, name, "ebtable_", error, mutex); ++} ++ ++static inline struct ebt_match * ++find_match_lock(const char *name, int *error, struct semaphore *mutex) ++{ ++ return find_inlist_lock(&ebt_matches, name, "ebt_", error, mutex); ++} ++ ++static inline struct ebt_watcher * ++find_watcher_lock(const char *name, int *error, struct semaphore *mutex) ++{ ++ return find_inlist_lock(&ebt_watchers, name, "ebt_", error, mutex); ++} ++ ++static inline struct ebt_target * ++find_target_lock(const char *name, int *error, struct semaphore *mutex) ++{ ++ return find_inlist_lock(&ebt_targets, name, "ebt_", error, mutex); ++} ++ ++static inline int ++ebt_check_match(struct ebt_entry_match *m, struct ebt_entry *e, ++ const char *name, unsigned int hookmask, unsigned int *cnt) ++{ ++ struct ebt_match *match; ++ int ret; ++ ++ if (((char *)m) + m->match_size + sizeof(struct ebt_entry_match) > ++ ((char *)e) + e->watchers_offset) ++ return -EINVAL; ++ match = find_match_lock(m->u.name, &ret, &ebt_mutex); ++ if (!match) ++ return ret; ++ m->u.match = match; ++ if (match->me) ++ __MOD_INC_USE_COUNT(match->me); ++ up(&ebt_mutex); ++ if (match->check && ++ match->check(name, hookmask, e, m->data, m->match_size) != 0) { ++ BUGPRINT("match->check failed\n"); ++ if (match->me) ++ __MOD_DEC_USE_COUNT(match->me); ++ return -EINVAL; ++ } ++ (*cnt)++; ++ return 0; ++} ++ ++static inline int ++ebt_check_watcher(struct ebt_entry_watcher *w, struct ebt_entry *e, ++ const char *name, unsigned int hookmask, unsigned int *cnt) ++{ ++ struct ebt_watcher *watcher; ++ int ret; ++ ++ if (((char *)w) + w->watcher_size + sizeof(struct ebt_entry_watcher) > ++ ((char *)e) + e->target_offset) ++ return -EINVAL; ++ watcher = find_watcher_lock(w->u.name, &ret, &ebt_mutex); ++ if (!watcher) ++ return ret; ++ w->u.watcher = watcher; ++ if (watcher->me) ++ __MOD_INC_USE_COUNT(watcher->me); ++ up(&ebt_mutex); ++ if (watcher->check && ++ watcher->check(name, hookmask, e, w->data, w->watcher_size) != 0) { ++ BUGPRINT("watcher->check failed\n"); ++ if (watcher->me) ++ __MOD_DEC_USE_COUNT(watcher->me); ++ return -EINVAL; ++ } ++ (*cnt)++; ++ return 0; ++} ++ ++// this one is very careful, as it is the first function ++// to parse the userspace data ++static inline int ++ebt_check_entry_size_and_hooks(struct ebt_entry *e, ++ struct ebt_table_info *newinfo, char *base, char *limit, ++ struct ebt_entries **hook_entries, unsigned int *n, unsigned int *cnt, ++ unsigned int *totalcnt, unsigned int *udc_cnt, unsigned int valid_hooks) ++{ ++ int i; ++ ++ for (i = 0; i < NF_BR_NUMHOOKS; i++) { ++ if ((valid_hooks & (1 << i)) == 0) ++ continue; ++ if ( (char *)hook_entries[i] - base == ++ (char *)e - newinfo->entries) ++ break; ++ } ++ // beginning of a new chain ++ // if i == NF_BR_NUMHOOKS it must be a user defined chain ++ if (i != NF_BR_NUMHOOKS || !(e->bitmask & EBT_ENTRY_OR_ENTRIES)) { ++ if ((e->bitmask & EBT_ENTRY_OR_ENTRIES) != 0) { ++ // we make userspace set this right, ++ // so there is no misunderstanding ++ BUGPRINT("EBT_ENTRY_OR_ENTRIES shouldn't be set " ++ "in distinguisher\n"); ++ return -EINVAL; ++ } ++ // this checks if the previous chain has as many entries ++ // as it said it has ++ if (*n != *cnt) { ++ BUGPRINT("nentries does not equal the nr of entries " ++ "in the chain\n"); ++ return -EINVAL; ++ } ++ // before we look at the struct, be sure it is not too big ++ if ((char *)hook_entries[i] + sizeof(struct ebt_entries) ++ > limit) { ++ BUGPRINT("entries_size too small\n"); ++ return -EINVAL; ++ } ++ if (((struct ebt_entries *)e)->policy != EBT_DROP && ++ ((struct ebt_entries *)e)->policy != EBT_ACCEPT) { ++ // only RETURN from udc ++ if (i != NF_BR_NUMHOOKS || ++ ((struct ebt_entries *)e)->policy != EBT_RETURN) { ++ BUGPRINT("bad policy\n"); ++ return -EINVAL; ++ } ++ } ++ if (i == NF_BR_NUMHOOKS) // it's a user defined chain ++ (*udc_cnt)++; ++ else ++ newinfo->hook_entry[i] = (struct ebt_entries *)e; ++ if (((struct ebt_entries *)e)->counter_offset != *totalcnt) { ++ BUGPRINT("counter_offset != totalcnt"); ++ return -EINVAL; ++ } ++ *n = ((struct ebt_entries *)e)->nentries; ++ *cnt = 0; ++ return 0; ++ } ++ // a plain old entry, heh ++ if (sizeof(struct ebt_entry) > e->watchers_offset || ++ e->watchers_offset > e->target_offset || ++ e->target_offset >= e->next_offset) { ++ BUGPRINT("entry offsets not in right order\n"); ++ return -EINVAL; ++ } ++ // this is not checked anywhere else ++ if (e->next_offset - e->target_offset < sizeof(struct ebt_entry_target)) { ++ BUGPRINT("target size too small\n"); ++ return -EINVAL; ++ } ++ ++ (*cnt)++; ++ (*totalcnt)++; ++ return 0; ++} ++ ++struct ebt_cl_stack ++{ ++ struct ebt_chainstack cs; ++ int from; ++ unsigned int hookmask; ++}; ++ ++// we need these positions to check that the jumps to a different part of the ++// entries is a jump to the beginning of a new chain. ++static inline int ++ebt_get_udc_positions(struct ebt_entry *e, struct ebt_table_info *newinfo, ++ struct ebt_entries **hook_entries, unsigned int *n, unsigned int valid_hooks, ++ struct ebt_cl_stack *udc) ++{ ++ int i; ++ ++ // we're only interested in chain starts ++ if (e->bitmask & EBT_ENTRY_OR_ENTRIES) ++ return 0; ++ for (i = 0; i < NF_BR_NUMHOOKS; i++) { ++ if ((valid_hooks & (1 << i)) == 0) ++ continue; ++ if (newinfo->hook_entry[i] == (struct ebt_entries *)e) ++ break; ++ } ++ // only care about udc ++ if (i != NF_BR_NUMHOOKS) ++ return 0; ++ ++ udc[*n].cs.chaininfo = (struct ebt_entries *)e; ++ // these initialisations are depended on later in check_chainloops() ++ udc[*n].cs.n = 0; ++ udc[*n].hookmask = 0; ++ ++ (*n)++; ++ return 0; ++} ++ ++static inline int ++ebt_cleanup_match(struct ebt_entry_match *m, unsigned int *i) ++{ ++ if (i && (*i)-- == 0) ++ return 1; ++ if (m->u.match->destroy) ++ m->u.match->destroy(m->data, m->match_size); ++ if (m->u.match->me) ++ __MOD_DEC_USE_COUNT(m->u.match->me); ++ ++ return 0; ++} ++ ++static inline int ++ebt_cleanup_watcher(struct ebt_entry_watcher *w, unsigned int *i) ++{ ++ if (i && (*i)-- == 0) ++ return 1; ++ if (w->u.watcher->destroy) ++ w->u.watcher->destroy(w->data, w->watcher_size); ++ if (w->u.watcher->me) ++ __MOD_DEC_USE_COUNT(w->u.watcher->me); ++ ++ return 0; ++} ++ ++static inline int ++ebt_cleanup_entry(struct ebt_entry *e, unsigned int *cnt) ++{ ++ struct ebt_entry_target *t; ++ ++ if ((e->bitmask & EBT_ENTRY_OR_ENTRIES) == 0) ++ return 0; ++ // we're done ++ if (cnt && (*cnt)-- == 0) ++ return 1; ++ EBT_WATCHER_ITERATE(e, ebt_cleanup_watcher, NULL); ++ EBT_MATCH_ITERATE(e, ebt_cleanup_match, NULL); ++ t = (struct ebt_entry_target *)(((char *)e) + e->target_offset); ++ if (t->u.target->destroy) ++ t->u.target->destroy(t->data, t->target_size); ++ if (t->u.target->me) ++ __MOD_DEC_USE_COUNT(t->u.target->me); ++ ++ return 0; ++} ++ ++static inline int ++ebt_check_entry(struct ebt_entry *e, struct ebt_table_info *newinfo, ++ const char *name, unsigned int *cnt, unsigned int valid_hooks, ++ struct ebt_cl_stack *cl_s, unsigned int udc_cnt) ++{ ++ struct ebt_entry_target *t; ++ struct ebt_target *target; ++ unsigned int i, j, hook = 0, hookmask = 0; ++ int ret; ++ ++ // Don't mess with the struct ebt_entries ++ if ((e->bitmask & EBT_ENTRY_OR_ENTRIES) == 0) ++ return 0; ++ ++ if (e->bitmask & ~EBT_F_MASK) { ++ BUGPRINT("Unknown flag for bitmask\n"); ++ return -EINVAL; ++ } ++ if (e->invflags & ~EBT_INV_MASK) { ++ BUGPRINT("Unknown flag for inv bitmask\n"); ++ return -EINVAL; ++ } ++ if ( (e->bitmask & EBT_NOPROTO) && (e->bitmask & EBT_802_3) ) { ++ BUGPRINT("NOPROTO & 802_3 not allowed\n"); ++ return -EINVAL; ++ } ++ // what hook do we belong to? ++ for (i = 0; i < NF_BR_NUMHOOKS; i++) { ++ if ((valid_hooks & (1 << i)) == 0) ++ continue; ++ if ((char *)newinfo->hook_entry[i] < (char *)e) ++ hook = i; ++ else ++ break; ++ } ++ // (1 << NF_BR_NUMHOOKS) tells the check functions the rule is on ++ // a base chain ++ if (i < NF_BR_NUMHOOKS) ++ hookmask = (1 << hook) | (1 << NF_BR_NUMHOOKS); ++ else { ++ for (i = 0; i < udc_cnt; i++) ++ if ((char *)(cl_s[i].cs.chaininfo) > (char *)e) ++ break; ++ if (i == 0) ++ hookmask = (1 << hook) | (1 << NF_BR_NUMHOOKS); ++ else ++ hookmask = cl_s[i - 1].hookmask; ++ } ++ i = 0; ++ ret = EBT_MATCH_ITERATE(e, ebt_check_match, e, name, hookmask, &i); ++ if (ret != 0) ++ goto cleanup_matches; ++ j = 0; ++ ret = EBT_WATCHER_ITERATE(e, ebt_check_watcher, e, name, hookmask, &j); ++ if (ret != 0) ++ goto cleanup_watchers; ++ t = (struct ebt_entry_target *)(((char *)e) + e->target_offset); ++ target = find_target_lock(t->u.name, &ret, &ebt_mutex); ++ if (!target) ++ goto cleanup_watchers; ++ if (target->me) ++ __MOD_INC_USE_COUNT(target->me); ++ up(&ebt_mutex); ++ ++ t->u.target = target; ++ if (t->u.target == &ebt_standard_target) { ++ if (e->target_offset + sizeof(struct ebt_standard_target) > ++ e->next_offset) { ++ BUGPRINT("Standard target size too big\n"); ++ ret = -EFAULT; ++ goto cleanup_watchers; ++ } ++ if (((struct ebt_standard_target *)t)->verdict < ++ -NUM_STANDARD_TARGETS) { ++ BUGPRINT("Invalid standard target\n"); ++ ret = -EFAULT; ++ goto cleanup_watchers; ++ } ++ } else if ((e->target_offset + t->target_size + ++ sizeof(struct ebt_entry_target) > e->next_offset) || ++ (t->u.target->check && ++ t->u.target->check(name, hookmask, e, t->data, t->target_size) != 0)){ ++ if (t->u.target->me) ++ __MOD_DEC_USE_COUNT(t->u.target->me); ++ ret = -EFAULT; ++ goto cleanup_watchers; ++ } ++ (*cnt)++; ++ return 0; ++cleanup_watchers: ++ EBT_WATCHER_ITERATE(e, ebt_cleanup_watcher, &j); ++cleanup_matches: ++ EBT_MATCH_ITERATE(e, ebt_cleanup_match, &i); ++ return ret; ++} ++ ++// checks for loops and sets the hook mask for udc ++// the hook mask for udc tells us from which base chains the udc can be ++// accessed. This mask is a parameter to the check() functions of the extensions ++static int check_chainloops(struct ebt_entries *chain, ++ struct ebt_cl_stack *cl_s, unsigned int udc_cnt, ++ unsigned int hooknr, char *base) ++{ ++ int i, chain_nr = -1, pos = 0, nentries = chain->nentries, verdict; ++ struct ebt_entry *e = (struct ebt_entry *)chain->data; ++ struct ebt_entry_target *t; ++ ++ while (pos < nentries || chain_nr != -1) { ++ // end of udc, go back one 'recursion' step ++ if (pos == nentries) { ++ // put back values of the time when this chain was called ++ e = cl_s[chain_nr].cs.e; ++ if (cl_s[chain_nr].from != -1) ++ nentries = ++ cl_s[cl_s[chain_nr].from].cs.chaininfo->nentries; ++ else ++ nentries = chain->nentries; ++ pos = cl_s[chain_nr].cs.n; ++ // make sure we won't see a loop that isn't one ++ cl_s[chain_nr].cs.n = 0; ++ chain_nr = cl_s[chain_nr].from; ++ if (pos == nentries) ++ continue; ++ } ++ t = (struct ebt_entry_target *) ++ (((char *)e) + e->target_offset); ++ if (strcmp(t->u.name, EBT_STANDARD_TARGET)) ++ goto letscontinue; ++ if (e->target_offset + sizeof(struct ebt_standard_target) > ++ e->next_offset) { ++ BUGPRINT("Standard target size too big\n"); ++ return -1; ++ } ++ verdict = ((struct ebt_standard_target *)t)->verdict; ++ if (verdict >= 0) { // jump to another chain ++ struct ebt_entries *hlp2 = ++ (struct ebt_entries *)(base + verdict); ++ for (i = 0; i < udc_cnt; i++) ++ if (hlp2 == cl_s[i].cs.chaininfo) ++ break; ++ // bad destination or loop ++ if (i == udc_cnt) { ++ BUGPRINT("bad destination\n"); ++ return -1; ++ } ++ if (cl_s[i].cs.n) { ++ BUGPRINT("loop\n"); ++ return -1; ++ } ++ // this can't be 0, so the above test is correct ++ cl_s[i].cs.n = pos + 1; ++ pos = 0; ++ cl_s[i].cs.e = ((void *)e + e->next_offset); ++ e = (struct ebt_entry *)(hlp2->data); ++ nentries = hlp2->nentries; ++ cl_s[i].from = chain_nr; ++ chain_nr = i; ++ // this udc is accessible from the base chain for hooknr ++ cl_s[i].hookmask |= (1 << hooknr); ++ continue; ++ } ++letscontinue: ++ e = (void *)e + e->next_offset; ++ pos++; ++ } ++ return 0; ++} ++ ++// do the parsing of the table/chains/entries/matches/watchers/targets, heh ++static int translate_table(struct ebt_replace *repl, ++ struct ebt_table_info *newinfo) ++{ ++ unsigned int i, j, k, udc_cnt; ++ int ret; ++ struct ebt_cl_stack *cl_s = NULL; // used in the checking for chain loops ++ ++ i = 0; ++ while (i < NF_BR_NUMHOOKS && !(repl->valid_hooks & (1 << i))) ++ i++; ++ if (i == NF_BR_NUMHOOKS) { ++ BUGPRINT("No valid hooks specified\n"); ++ return -EINVAL; ++ } ++ if (repl->hook_entry[i] != (struct ebt_entries *)repl->entries) { ++ BUGPRINT("Chains don't start at beginning\n"); ++ return -EINVAL; ++ } ++ // make sure chains are ordered after each other in same order ++ // as their corresponding hooks ++ for (j = i + 1; j < NF_BR_NUMHOOKS; j++) { ++ if (!(repl->valid_hooks & (1 << j))) ++ continue; ++ if ( repl->hook_entry[j] <= repl->hook_entry[i] ) { ++ BUGPRINT("Hook order must be followed\n"); ++ return -EINVAL; ++ } ++ i = j; ++ } ++ ++ for (i = 0; i < NF_BR_NUMHOOKS; i++) ++ newinfo->hook_entry[i] = NULL; ++ ++ newinfo->entries_size = repl->entries_size; ++ newinfo->nentries = repl->nentries; ++ ++ // do some early checkings and initialize some things ++ i = 0; // holds the expected nr. of entries for the chain ++ j = 0; // holds the up to now counted entries for the chain ++ k = 0; // holds the total nr. of entries, should equal ++ // newinfo->nentries afterwards ++ udc_cnt = 0; // will hold the nr. of user defined chains (udc) ++ ret = EBT_ENTRY_ITERATE(newinfo->entries, newinfo->entries_size, ++ ebt_check_entry_size_and_hooks, newinfo, repl->entries, ++ repl->entries + repl->entries_size, repl->hook_entry, &i, &j, &k, ++ &udc_cnt, repl->valid_hooks); ++ ++ if (ret != 0) ++ return ret; ++ ++ if (i != j) { ++ BUGPRINT("nentries does not equal the nr of entries in the " ++ "(last) chain\n"); ++ return -EINVAL; ++ } ++ if (k != newinfo->nentries) { ++ BUGPRINT("Total nentries is wrong\n"); ++ return -EINVAL; ++ } ++ ++ // check if all valid hooks have a chain ++ for (i = 0; i < NF_BR_NUMHOOKS; i++) { ++ if (newinfo->hook_entry[i] == NULL && ++ (repl->valid_hooks & (1 << i))) { ++ BUGPRINT("Valid hook without chain\n"); ++ return -EINVAL; ++ } ++ } ++ ++ // Get the location of the udc, put them in an array ++ // While we're at it, allocate the chainstack ++ if (udc_cnt) { ++ // this will get free'd in do_replace()/ebt_register_table() ++ // if an error occurs ++ newinfo->chainstack = (struct ebt_chainstack **) ++ vmalloc(smp_num_cpus * sizeof(struct ebt_chainstack)); ++ if (!newinfo->chainstack) ++ return -ENOMEM; ++ for (i = 0; i < smp_num_cpus; i++) { ++ newinfo->chainstack[i] = ++ vmalloc(udc_cnt * sizeof(struct ebt_chainstack)); ++ if (!newinfo->chainstack[i]) { ++ while (i) ++ vfree(newinfo->chainstack[--i]); ++ vfree(newinfo->chainstack); ++ newinfo->chainstack = NULL; ++ return -ENOMEM; ++ } ++ } ++ ++ cl_s = (struct ebt_cl_stack *) ++ vmalloc(udc_cnt * sizeof(struct ebt_cl_stack)); ++ if (!cl_s) ++ return -ENOMEM; ++ i = 0; // the i'th udc ++ EBT_ENTRY_ITERATE(newinfo->entries, newinfo->entries_size, ++ ebt_get_udc_positions, newinfo, repl->hook_entry, &i, ++ repl->valid_hooks, cl_s); ++ // sanity check ++ if (i != udc_cnt) { ++ BUGPRINT("i != udc_cnt\n"); ++ vfree(cl_s); ++ return -EFAULT; ++ } ++ } ++ ++ // Check for loops ++ for (i = 0; i < NF_BR_NUMHOOKS; i++) ++ if (repl->valid_hooks & (1 << i)) ++ if (check_chainloops(newinfo->hook_entry[i], ++ cl_s, udc_cnt, i, newinfo->entries)) { ++ if (cl_s) ++ vfree(cl_s); ++ return -EINVAL; ++ } ++ ++ // we now know the following (along with E=mc²): ++ // - the nr of entries in each chain is right ++ // - the size of the allocated space is right ++ // - all valid hooks have a corresponding chain ++ // - there are no loops ++ // - wrong data can still be on the level of a single entry ++ // - could be there are jumps to places that are not the ++ // beginning of a chain. This can only occur in chains that ++ // are not accessible from any base chains, so we don't care. ++ ++ // used to know what we need to clean up if something goes wrong ++ i = 0; ++ ret = EBT_ENTRY_ITERATE(newinfo->entries, newinfo->entries_size, ++ ebt_check_entry, newinfo, repl->name, &i, repl->valid_hooks, ++ cl_s, udc_cnt); ++ if (ret != 0) { ++ EBT_ENTRY_ITERATE(newinfo->entries, newinfo->entries_size, ++ ebt_cleanup_entry, &i); ++ } ++ if (cl_s) ++ vfree(cl_s); ++ return ret; ++} ++ ++// called under write_lock ++static void get_counters(struct ebt_counter *oldcounters, ++ struct ebt_counter *counters, unsigned int nentries) ++{ ++ int i, cpu; ++ struct ebt_counter *counter_base; ++ ++ // counters of cpu 0 ++ memcpy(counters, oldcounters, ++ sizeof(struct ebt_counter) * nentries); ++ // add other counters to those of cpu 0 ++ for (cpu = 1; cpu < smp_num_cpus; cpu++) { ++ counter_base = COUNTER_BASE(oldcounters, nentries, cpu); ++ for (i = 0; i < nentries; i++) { ++ counters[i].pcnt += counter_base[i].pcnt; ++ counters[i].bcnt += counter_base[i].bcnt; ++ } ++ } ++} ++ ++// replace the table ++static int do_replace(void *user, unsigned int len) ++{ ++ int ret, i, countersize; ++ struct ebt_table_info *newinfo; ++ struct ebt_replace tmp; ++ struct ebt_table *t; ++ struct ebt_counter *counterstmp = NULL; ++ // used to be able to unlock earlier ++ struct ebt_table_info *table; ++ ++ if (copy_from_user(&tmp, user, sizeof(tmp)) != 0) ++ return -EFAULT; ++ ++ if (len != sizeof(tmp) + tmp.entries_size) { ++ BUGPRINT("Wrong len argument\n"); ++ return -EINVAL; ++ } ++ ++ if (tmp.entries_size == 0) { ++ BUGPRINT("Entries_size never zero\n"); ++ return -EINVAL; ++ } ++ countersize = COUNTER_OFFSET(tmp.nentries) * smp_num_cpus; ++ newinfo = (struct ebt_table_info *) ++ vmalloc(sizeof(struct ebt_table_info) + countersize); ++ if (!newinfo) ++ return -ENOMEM; ++ ++ if (countersize) ++ memset(newinfo->counters, 0, countersize); ++ ++ newinfo->entries = (char *)vmalloc(tmp.entries_size); ++ if (!newinfo->entries) { ++ ret = -ENOMEM; ++ goto free_newinfo; ++ } ++ if (copy_from_user( ++ newinfo->entries, tmp.entries, tmp.entries_size) != 0) { ++ BUGPRINT("Couldn't copy entries from userspace\n"); ++ ret = -EFAULT; ++ goto free_entries; ++ } ++ ++ // the user wants counters back ++ // the check on the size is done later, when we have the lock ++ if (tmp.num_counters) { ++ counterstmp = (struct ebt_counter *) ++ vmalloc(tmp.num_counters * sizeof(struct ebt_counter)); ++ if (!counterstmp) { ++ ret = -ENOMEM; ++ goto free_entries; ++ } ++ } ++ else ++ counterstmp = NULL; ++ ++ // this can get initialized by translate_table() ++ newinfo->chainstack = NULL; ++ ret = translate_table(&tmp, newinfo); ++ ++ if (ret != 0) ++ goto free_counterstmp; ++ ++ t = find_table_lock(tmp.name, &ret, &ebt_mutex); ++ if (!t) ++ goto free_iterate; ++ ++ // the table doesn't like it ++ if (t->check && (ret = t->check(newinfo, tmp.valid_hooks))) ++ goto free_unlock; ++ ++ if (tmp.num_counters && tmp.num_counters != t->private->nentries) { ++ BUGPRINT("Wrong nr. of counters requested\n"); ++ ret = -EINVAL; ++ goto free_unlock; ++ } ++ ++ // we have the mutex lock, so no danger in reading this pointer ++ table = t->private; ++ // we need an atomic snapshot of the counters ++ write_lock_bh(&t->lock); ++ if (tmp.num_counters) ++ get_counters(t->private->counters, counterstmp, ++ t->private->nentries); ++ ++ t->private = newinfo; ++ write_unlock_bh(&t->lock); ++ up(&ebt_mutex); ++ // So, a user can change the chains while having messed up her counter ++ // allocation. Only reason why this is done is because this way the lock ++ // is held only once, while this doesn't bring the kernel into a ++ // dangerous state. ++ if (tmp.num_counters && ++ copy_to_user(tmp.counters, counterstmp, ++ tmp.num_counters * sizeof(struct ebt_counter))) { ++ BUGPRINT("Couldn't copy counters to userspace\n"); ++ ret = -EFAULT; ++ } ++ else ++ ret = 0; ++ ++ // decrease module count and free resources ++ EBT_ENTRY_ITERATE(table->entries, table->entries_size, ++ ebt_cleanup_entry, NULL); ++ ++ vfree(table->entries); ++ if (table->chainstack) { ++ for (i = 0; i < smp_num_cpus; i++) ++ vfree(table->chainstack[i]); ++ vfree(table->chainstack); ++ } ++ vfree(table); ++ ++ if (counterstmp) ++ vfree(counterstmp); ++ return ret; ++ ++free_unlock: ++ up(&ebt_mutex); ++free_iterate: ++ EBT_ENTRY_ITERATE(newinfo->entries, newinfo->entries_size, ++ ebt_cleanup_entry, NULL); ++free_counterstmp: ++ if (counterstmp) ++ vfree(counterstmp); ++ // can be initialized in translate_table() ++ if (newinfo->chainstack) { ++ for (i = 0; i < smp_num_cpus; i++) ++ vfree(newinfo->chainstack[i]); ++ vfree(newinfo->chainstack); ++ } ++free_entries: ++ if (newinfo->entries) ++ vfree(newinfo->entries); ++free_newinfo: ++ if (newinfo) ++ vfree(newinfo); ++ return ret; ++} ++ ++int ebt_register_target(struct ebt_target *target) ++{ ++ int ret; ++ ++ ret = down_interruptible(&ebt_mutex); ++ if (ret != 0) ++ return ret; ++ if (!list_named_insert(&ebt_targets, target)) { ++ up(&ebt_mutex); ++ return -EEXIST; ++ } ++ up(&ebt_mutex); ++ MOD_INC_USE_COUNT; ++ ++ return 0; ++} ++ ++void ebt_unregister_target(struct ebt_target *target) ++{ ++ down(&ebt_mutex); ++ LIST_DELETE(&ebt_targets, target); ++ up(&ebt_mutex); ++ MOD_DEC_USE_COUNT; ++} ++ ++int ebt_register_match(struct ebt_match *match) ++{ ++ int ret; ++ ++ ret = down_interruptible(&ebt_mutex); ++ if (ret != 0) ++ return ret; ++ if (!list_named_insert(&ebt_matches, match)) { ++ up(&ebt_mutex); ++ return -EEXIST; ++ } ++ up(&ebt_mutex); ++ MOD_INC_USE_COUNT; ++ ++ return 0; ++} ++ ++void ebt_unregister_match(struct ebt_match *match) ++{ ++ down(&ebt_mutex); ++ LIST_DELETE(&ebt_matches, match); ++ up(&ebt_mutex); ++ MOD_DEC_USE_COUNT; ++} ++ ++int ebt_register_watcher(struct ebt_watcher *watcher) ++{ ++ int ret; ++ ++ ret = down_interruptible(&ebt_mutex); ++ if (ret != 0) ++ return ret; ++ if (!list_named_insert(&ebt_watchers, watcher)) { ++ up(&ebt_mutex); ++ return -EEXIST; ++ } ++ up(&ebt_mutex); ++ MOD_INC_USE_COUNT; ++ ++ return 0; ++} ++ ++void ebt_unregister_watcher(struct ebt_watcher *watcher) ++{ ++ down(&ebt_mutex); ++ LIST_DELETE(&ebt_watchers, watcher); ++ up(&ebt_mutex); ++ MOD_DEC_USE_COUNT; ++} ++ ++int ebt_register_table(struct ebt_table *table) ++{ ++ struct ebt_table_info *newinfo; ++ int ret, i, countersize; ++ ++ if (!table || !table->table ||!table->table->entries || ++ table->table->entries_size == 0 || ++ table->table->counters || table->private) { ++ BUGPRINT("Bad table data for ebt_register_table!!!\n"); ++ return -EINVAL; ++ } ++ ++ countersize = COUNTER_OFFSET(table->table->nentries) * smp_num_cpus; ++ newinfo = (struct ebt_table_info *) ++ vmalloc(sizeof(struct ebt_table_info) + countersize); ++ ret = -ENOMEM; ++ if (!newinfo) ++ return -ENOMEM; ++ ++ newinfo->entries = (char *)vmalloc(table->table->entries_size); ++ if (!(newinfo->entries)) ++ goto free_newinfo; ++ ++ memcpy(newinfo->entries, table->table->entries, ++ table->table->entries_size); ++ ++ if (countersize) ++ memset(newinfo->counters, 0, countersize); ++ ++ // fill in newinfo and parse the entries ++ newinfo->chainstack = NULL; ++ ret = translate_table(table->table, newinfo); ++ if (ret != 0) { ++ BUGPRINT("Translate_table failed\n"); ++ goto free_chainstack; ++ } ++ ++ if (table->check && table->check(newinfo, table->valid_hooks)) { ++ BUGPRINT("The table doesn't like its own initial data, lol\n"); ++ return -EINVAL; ++ } ++ ++ table->private = newinfo; ++ table->lock = RW_LOCK_UNLOCKED; ++ ret = down_interruptible(&ebt_mutex); ++ if (ret != 0) ++ goto free_chainstack; ++ ++ if (list_named_find(&ebt_tables, table->name)) { ++ ret = -EEXIST; ++ BUGPRINT("Table name already exists\n"); ++ goto free_unlock; ++ } ++ ++ list_prepend(&ebt_tables, table); ++ up(&ebt_mutex); ++ MOD_INC_USE_COUNT; ++ return 0; ++free_unlock: ++ up(&ebt_mutex); ++free_chainstack: ++ if (newinfo->chainstack) { ++ for (i = 0; i < smp_num_cpus; i++) ++ vfree(newinfo->chainstack[i]); ++ vfree(newinfo->chainstack); ++ } ++ vfree(newinfo->entries); ++free_newinfo: ++ vfree(newinfo); ++ return ret; ++} ++ ++void ebt_unregister_table(struct ebt_table *table) ++{ ++ int i; ++ ++ if (!table) { ++ BUGPRINT("Request to unregister NULL table!!!\n"); ++ return; ++ } ++ down(&ebt_mutex); ++ LIST_DELETE(&ebt_tables, table); ++ up(&ebt_mutex); ++ EBT_ENTRY_ITERATE(table->private->entries, ++ table->private->entries_size, ebt_cleanup_entry, NULL); ++ if (table->private->entries) ++ vfree(table->private->entries); ++ if (table->private->chainstack) { ++ for (i = 0; i < smp_num_cpus; i++) ++ vfree(table->private->chainstack[i]); ++ vfree(table->private->chainstack); ++ } ++ vfree(table->private); ++ MOD_DEC_USE_COUNT; ++} ++ ++// userspace just supplied us with counters ++static int update_counters(void *user, unsigned int len) ++{ ++ int i, ret; ++ struct ebt_counter *tmp; ++ struct ebt_replace hlp; ++ struct ebt_table *t; ++ ++ if (copy_from_user(&hlp, user, sizeof(hlp))) ++ return -EFAULT; ++ ++ if (len != sizeof(hlp) + hlp.num_counters * sizeof(struct ebt_counter)) ++ return -EINVAL; ++ if (hlp.num_counters == 0) ++ return -EINVAL; ++ ++ if ( !(tmp = (struct ebt_counter *) ++ vmalloc(hlp.num_counters * sizeof(struct ebt_counter))) ){ ++ MEMPRINT("Update_counters && nomemory\n"); ++ return -ENOMEM; ++ } ++ ++ t = find_table_lock(hlp.name, &ret, &ebt_mutex); ++ if (!t) ++ goto free_tmp; ++ ++ if (hlp.num_counters != t->private->nentries) { ++ BUGPRINT("Wrong nr of counters\n"); ++ ret = -EINVAL; ++ goto unlock_mutex; ++ } ++ ++ if ( copy_from_user(tmp, hlp.counters, ++ hlp.num_counters * sizeof(struct ebt_counter)) ) { ++ BUGPRINT("Updata_counters && !cfu\n"); ++ ret = -EFAULT; ++ goto unlock_mutex; ++ } ++ ++ // we want an atomic add of the counters ++ write_lock_bh(&t->lock); ++ ++ // we add to the counters of the first cpu ++ for (i = 0; i < hlp.num_counters; i++) { ++ t->private->counters[i].pcnt += tmp[i].pcnt; ++ t->private->counters[i].bcnt += tmp[i].bcnt; ++ } ++ ++ write_unlock_bh(&t->lock); ++ ret = 0; ++unlock_mutex: ++ up(&ebt_mutex); ++free_tmp: ++ vfree(tmp); ++ return ret; ++} ++ ++static inline int ebt_make_matchname(struct ebt_entry_match *m, ++ char *base, char *ubase) ++{ ++ char *hlp = ubase - base + (char *)m; ++ if (copy_to_user(hlp, m->u.match->name, EBT_FUNCTION_MAXNAMELEN)) ++ return -EFAULT; ++ return 0; ++} ++ ++static inline int ebt_make_watchername(struct ebt_entry_watcher *w, ++ char *base, char *ubase) ++{ ++ char *hlp = ubase - base + (char *)w; ++ if (copy_to_user(hlp , w->u.watcher->name, EBT_FUNCTION_MAXNAMELEN)) ++ return -EFAULT; ++ return 0; ++} ++ ++static inline int ebt_make_names(struct ebt_entry *e, char *base, char *ubase) ++{ ++ int ret; ++ char *hlp; ++ struct ebt_entry_target *t; ++ ++ if ((e->bitmask & EBT_ENTRY_OR_ENTRIES) == 0) ++ return 0; ++ ++ hlp = ubase - base + (char *)e + e->target_offset; ++ t = (struct ebt_entry_target *)(((char *)e) + e->target_offset); ++ ++ ret = EBT_MATCH_ITERATE(e, ebt_make_matchname, base, ubase); ++ if (ret != 0) ++ return ret; ++ ret = EBT_WATCHER_ITERATE(e, ebt_make_watchername, base, ubase); ++ if (ret != 0) ++ return ret; ++ if (copy_to_user(hlp, t->u.target->name, EBT_FUNCTION_MAXNAMELEN)) ++ return -EFAULT; ++ return 0; ++} ++ ++// called with ebt_mutex down ++static int copy_everything_to_user(struct ebt_table *t, void *user, ++ int *len, int cmd) ++{ ++ struct ebt_replace tmp; ++ struct ebt_counter *counterstmp, *oldcounters; ++ unsigned int entries_size, nentries; ++ char *entries; ++ ++ if (cmd == EBT_SO_GET_ENTRIES) { ++ entries_size = t->private->entries_size; ++ nentries = t->private->nentries; ++ entries = t->private->entries; ++ oldcounters = t->private->counters; ++ } else { ++ entries_size = t->table->entries_size; ++ nentries = t->table->nentries; ++ entries = t->table->entries; ++ oldcounters = t->table->counters; ++ } ++ ++ if (copy_from_user(&tmp, user, sizeof(tmp))) { ++ BUGPRINT("Cfu didn't work\n"); ++ return -EFAULT; ++ } ++ ++ if (*len != sizeof(struct ebt_replace) + entries_size + ++ (tmp.num_counters? nentries * sizeof(struct ebt_counter): 0)) { ++ BUGPRINT("Wrong size\n"); ++ return -EINVAL; ++ } ++ ++ if (tmp.nentries != nentries) { ++ BUGPRINT("Nentries wrong\n"); ++ return -EINVAL; ++ } ++ ++ if (tmp.entries_size != entries_size) { ++ BUGPRINT("Wrong size\n"); ++ return -EINVAL; ++ } ++ ++ // userspace might not need the counters ++ if (tmp.num_counters) { ++ if (tmp.num_counters != nentries) { ++ BUGPRINT("Num_counters wrong\n"); ++ return -EINVAL; ++ } ++ counterstmp = (struct ebt_counter *) ++ vmalloc(nentries * sizeof(struct ebt_counter)); ++ if (!counterstmp) { ++ MEMPRINT("Couldn't copy counters, out of memory\n"); ++ return -ENOMEM; ++ } ++ write_lock_bh(&t->lock); ++ get_counters(oldcounters, counterstmp, nentries); ++ write_unlock_bh(&t->lock); ++ ++ if (copy_to_user(tmp.counters, counterstmp, ++ nentries * sizeof(struct ebt_counter))) { ++ BUGPRINT("Couldn't copy counters to userspace\n"); ++ vfree(counterstmp); ++ return -EFAULT; ++ } ++ vfree(counterstmp); ++ } ++ ++ if (copy_to_user(tmp.entries, entries, entries_size)) { ++ BUGPRINT("Couldn't copy entries to userspace\n"); ++ return -EFAULT; ++ } ++ // set the match/watcher/target names right ++ return EBT_ENTRY_ITERATE(entries, entries_size, ++ ebt_make_names, entries, tmp.entries); ++} ++ ++static int do_ebt_set_ctl(struct sock *sk, ++ int cmd, void *user, unsigned int len) ++{ ++ int ret; ++ ++ switch(cmd) { ++ case EBT_SO_SET_ENTRIES: ++ ret = do_replace(user, len); ++ break; ++ case EBT_SO_SET_COUNTERS: ++ ret = update_counters(user, len); ++ break; ++ default: ++ ret = -EINVAL; ++ } ++ return ret; ++} ++ ++static int do_ebt_get_ctl(struct sock *sk, int cmd, void *user, int *len) ++{ ++ int ret; ++ struct ebt_replace tmp; ++ struct ebt_table *t; ++ ++ if (copy_from_user(&tmp, user, sizeof(tmp))) ++ return -EFAULT; ++ ++ t = find_table_lock(tmp.name, &ret, &ebt_mutex); ++ if (!t) ++ return ret; ++ ++ switch(cmd) { ++ case EBT_SO_GET_INFO: ++ case EBT_SO_GET_INIT_INFO: ++ if (*len != sizeof(struct ebt_replace)){ ++ ret = -EINVAL; ++ up(&ebt_mutex); ++ break; ++ } ++ if (cmd == EBT_SO_GET_INFO) { ++ tmp.nentries = t->private->nentries; ++ tmp.entries_size = t->private->entries_size; ++ tmp.valid_hooks = t->valid_hooks; ++ } else { ++ tmp.nentries = t->table->nentries; ++ tmp.entries_size = t->table->entries_size; ++ tmp.valid_hooks = t->table->valid_hooks; ++ } ++ up(&ebt_mutex); ++ if (copy_to_user(user, &tmp, *len) != 0){ ++ BUGPRINT("c2u Didn't work\n"); ++ ret = -EFAULT; ++ break; ++ } ++ ret = 0; ++ break; ++ ++ case EBT_SO_GET_ENTRIES: ++ case EBT_SO_GET_INIT_ENTRIES: ++ ret = copy_everything_to_user(t, user, len, cmd); ++ up(&ebt_mutex); ++ break; ++ ++ default: ++ up(&ebt_mutex); ++ ret = -EINVAL; ++ } ++ ++ return ret; ++} ++ ++static struct nf_sockopt_ops ebt_sockopts = ++{ { NULL, NULL }, PF_INET, EBT_BASE_CTL, EBT_SO_SET_MAX + 1, do_ebt_set_ctl, ++ EBT_BASE_CTL, EBT_SO_GET_MAX + 1, do_ebt_get_ctl, 0, NULL ++}; ++ ++static int __init init(void) ++{ ++ int ret; ++ ++ down(&ebt_mutex); ++ list_named_insert(&ebt_targets, &ebt_standard_target); ++ up(&ebt_mutex); ++ if ((ret = nf_register_sockopt(&ebt_sockopts)) < 0) ++ return ret; ++ ++ printk(KERN_NOTICE "Ebtables v2.0 registered\n"); ++ return 0; ++} ++ ++static void __exit fini(void) ++{ ++ nf_unregister_sockopt(&ebt_sockopts); ++ printk(KERN_NOTICE "Ebtables v2.0 unregistered\n"); ++} ++ ++EXPORT_SYMBOL(ebt_register_table); ++EXPORT_SYMBOL(ebt_unregister_table); ++EXPORT_SYMBOL(ebt_register_match); ++EXPORT_SYMBOL(ebt_unregister_match); ++EXPORT_SYMBOL(ebt_register_watcher); ++EXPORT_SYMBOL(ebt_unregister_watcher); ++EXPORT_SYMBOL(ebt_register_target); ++EXPORT_SYMBOL(ebt_unregister_target); ++EXPORT_SYMBOL(ebt_do_table); ++module_init(init); ++module_exit(fini); ++MODULE_LICENSE("GPL"); +diff -Nur linux-mips-cvs/net/core/dev.c linux-ebtables/net/core/dev.c +--- linux-mips-cvs/net/core/dev.c 2004-04-16 05:14:21.000000000 +0200 ++++ linux-ebtables/net/core/dev.c 2005-02-07 05:52:50.000000000 +0100 +@@ -1426,7 +1426,7 @@ + + + #if defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE) +-void (*br_handle_frame_hook)(struct sk_buff *skb) = NULL; ++int (*br_handle_frame_hook)(struct sk_buff *skb) = NULL; + #endif + + static __inline__ int handle_bridge(struct sk_buff *skb, +@@ -1443,7 +1443,6 @@ + } + } + +- br_handle_frame_hook(skb); + return ret; + } + +@@ -1503,7 +1502,12 @@ + #if defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE) + if (skb->dev->br_port != NULL && br_handle_frame_hook != NULL && + skb->pkt_type != PACKET_LOOPBACK) { +- return handle_bridge(skb, pt_prev); ++ int ret; ++ ++ ret = handle_bridge(skb, pt_prev); ++ if (br_handle_frame_hook(skb) == 0) ++ return ret; ++ pt_prev = NULL; + } + #endif + +diff -Nur linux-mips-cvs/net/core/netfilter.c linux-ebtables/net/core/netfilter.c +--- linux-mips-cvs/net/core/netfilter.c 2005-01-20 03:19:25.000000000 +0100 ++++ linux-ebtables/net/core/netfilter.c 2005-02-07 05:52:50.000000000 +0100 +@@ -342,10 +342,15 @@ + const struct net_device *indev, + const struct net_device *outdev, + struct list_head **i, +- int (*okfn)(struct sk_buff *)) ++ int (*okfn)(struct sk_buff *), ++ int hook_thresh) + { + for (*i = (*i)->next; *i != head; *i = (*i)->next) { + struct nf_hook_ops *elem = (struct nf_hook_ops *)*i; ++ ++ if (hook_thresh > elem->priority) ++ continue; ++ + switch (elem->hook(hook, skb, indev, outdev, okfn)) { + case NF_QUEUE: + return NF_QUEUE; +@@ -413,6 +418,10 @@ + { + int status; + struct nf_info *info; ++#if defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE) ++ struct net_device *physindev = NULL; ++ struct net_device *physoutdev = NULL; ++#endif + + if (!queue_handler[pf].outfn) { + kfree_skb(skb); +@@ -435,11 +444,24 @@ + if (indev) dev_hold(indev); + if (outdev) dev_hold(outdev); + ++#if defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE) ++ if (skb->nf_bridge) { ++ physindev = skb->nf_bridge->physindev; ++ if (physindev) dev_hold(physindev); ++ physoutdev = skb->nf_bridge->physoutdev; ++ if (physoutdev) dev_hold(physoutdev); ++ } ++#endif ++ + status = queue_handler[pf].outfn(skb, info, queue_handler[pf].data); + if (status < 0) { + /* James M doesn't say fuck enough. */ + if (indev) dev_put(indev); + if (outdev) dev_put(outdev); ++#if defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE) ++ if (physindev) dev_put(physindev); ++ if (physoutdev) dev_put(physoutdev); ++#endif + kfree(info); + kfree_skb(skb); + return; +@@ -449,7 +471,8 @@ + int nf_hook_slow(int pf, unsigned int hook, struct sk_buff *skb, + struct net_device *indev, + struct net_device *outdev, +- int (*okfn)(struct sk_buff *)) ++ int (*okfn)(struct sk_buff *), ++ int hook_thresh) + { + struct list_head *elem; + unsigned int verdict; +@@ -481,7 +504,7 @@ + + elem = &nf_hooks[pf][hook]; + verdict = nf_iterate(&nf_hooks[pf][hook], &skb, hook, indev, +- outdev, &elem, okfn); ++ outdev, &elem, okfn, hook_thresh); + if (verdict == NF_QUEUE) { + NFDEBUG("nf_hook: Verdict = QUEUE.\n"); + nf_queue(skb, elem, pf, hook, indev, outdev, okfn); +@@ -510,6 +533,14 @@ + + /* We don't have BR_NETPROTO_LOCK here */ + br_read_lock_bh(BR_NETPROTO_LOCK); ++#if defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE) ++ if (skb->nf_bridge) { ++ if (skb->nf_bridge->physindev) ++ dev_put(skb->nf_bridge->physindev); ++ if (skb->nf_bridge->physoutdev) ++ dev_put(skb->nf_bridge->physoutdev); ++ } ++#endif + for (i = nf_hooks[info->pf][info->hook].next; i != elem; i = i->next) { + if (i == &nf_hooks[info->pf][info->hook]) { + /* The module which sent it to userspace is gone. */ +@@ -530,7 +561,7 @@ + verdict = nf_iterate(&nf_hooks[info->pf][info->hook], + &skb, info->hook, + info->indev, info->outdev, &elem, +- info->okfn); ++ info->okfn, INT_MIN); + } + + switch (verdict) { +diff -Nur linux-mips-cvs/net/core/skbuff.c linux-ebtables/net/core/skbuff.c +--- linux-mips-cvs/net/core/skbuff.c 2003-08-13 19:19:30.000000000 +0200 ++++ linux-ebtables/net/core/skbuff.c 2005-02-07 05:52:50.000000000 +0100 +@@ -246,6 +246,9 @@ + #ifdef CONFIG_NETFILTER_DEBUG + skb->nf_debug = 0; + #endif ++#if defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE) ++ skb->nf_bridge = NULL; ++#endif + #endif + #ifdef CONFIG_NET_SCHED + skb->tc_index = 0; +@@ -326,6 +329,9 @@ + } + #ifdef CONFIG_NETFILTER + nf_conntrack_put(skb->nfct); ++#if defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE) ++ nf_bridge_put(skb->nf_bridge); ++#endif + #endif + skb_headerinit(skb, NULL, 0); /* clean state */ + kfree_skbmem(skb); +@@ -393,6 +399,9 @@ + #ifdef CONFIG_NETFILTER_DEBUG + C(nf_debug); + #endif ++#if defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE) ++ C(nf_bridge); ++#endif + #endif /*CONFIG_NETFILTER*/ + #if defined(CONFIG_HIPPI) + C(private); +@@ -405,6 +414,9 @@ + skb->cloned = 1; + #ifdef CONFIG_NETFILTER + nf_conntrack_get(skb->nfct); ++#if defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE) ++ nf_bridge_get(skb->nf_bridge); ++#endif + #endif + return n; + } +@@ -440,6 +452,10 @@ + #ifdef CONFIG_NETFILTER_DEBUG + new->nf_debug=old->nf_debug; + #endif ++#if defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE) ++ new->nf_bridge=old->nf_bridge; ++ nf_bridge_get(new->nf_bridge); ++#endif + #endif + #ifdef CONFIG_NET_SCHED + new->tc_index = old->tc_index; +@@ -726,9 +742,9 @@ + /* Set the tail pointer and length */ + skb_put(n,skb->len); + +- /* Copy the data only. */ +- if (skb_copy_bits(skb, 0, n->data, skb->len)) +- BUG(); ++ /* Copy the linear data and header. */ ++ if (skb_copy_bits(skb, -newheadroom, n->head, newheadroom + skb->len)) ++ BUG(); + + copy_skb_header(n, skb); + return n; +diff -Nur linux-mips-cvs/net/ipv4/ip_output.c linux-ebtables/net/ipv4/ip_output.c +--- linux-mips-cvs/net/ipv4/ip_output.c 2005-01-20 03:19:25.000000000 +0100 ++++ linux-ebtables/net/ipv4/ip_output.c 2005-02-07 05:52:50.000000000 +0100 +@@ -890,6 +890,10 @@ + /* Connection association is same as pre-frag packet */ + skb2->nfct = skb->nfct; + nf_conntrack_get(skb2->nfct); ++#if defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE) ++ skb2->nf_bridge = skb->nf_bridge; ++ nf_bridge_get(skb2->nf_bridge); ++#endif + #ifdef CONFIG_NETFILTER_DEBUG + skb2->nf_debug = skb->nf_debug; + #endif +diff -Nur linux-mips-cvs/net/ipv4/ip_output.c.orig linux-ebtables/net/ipv4/ip_output.c.orig +--- linux-mips-cvs/net/ipv4/ip_output.c.orig 1970-01-01 01:00:00.000000000 +0100 ++++ linux-ebtables/net/ipv4/ip_output.c.orig 2005-01-20 03:19:25.000000000 +0100 +@@ -0,0 +1,1036 @@ ++/* ++ * INET An implementation of the TCP/IP protocol suite for the LINUX ++ * operating system. INET is implemented using the BSD Socket ++ * interface as the means of communication with the user level. ++ * ++ * The Internet Protocol (IP) output module. ++ * ++ * Version: $Id$ ++ * ++ * Authors: Ross Biro, <bir7@leland.Stanford.Edu> ++ * Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG> ++ * Donald Becker, <becker@super.org> ++ * Alan Cox, <Alan.Cox@linux.org> ++ * Richard Underwood ++ * Stefan Becker, <stefanb@yello.ping.de> ++ * Jorge Cwik, <jorge@laser.satlink.net> ++ * Arnt Gulbrandsen, <agulbra@nvg.unit.no> ++ * ++ * See ip_input.c for original log ++ * ++ * Fixes: ++ * Alan Cox : Missing nonblock feature in ip_build_xmit. ++ * Mike Kilburn : htons() missing in ip_build_xmit. ++ * Bradford Johnson: Fix faulty handling of some frames when ++ * no route is found. ++ * Alexander Demenshin: Missing sk/skb free in ip_queue_xmit ++ * (in case if packet not accepted by ++ * output firewall rules) ++ * Mike McLagan : Routing by source ++ * Alexey Kuznetsov: use new route cache ++ * Andi Kleen: Fix broken PMTU recovery and remove ++ * some redundant tests. ++ * Vitaly E. Lavrov : Transparent proxy revived after year coma. ++ * Andi Kleen : Replace ip_reply with ip_send_reply. ++ * Andi Kleen : Split fast and slow ip_build_xmit path ++ * for decreased register pressure on x86 ++ * and more readibility. ++ * Marc Boucher : When call_out_firewall returns FW_QUEUE, ++ * silently drop skb instead of failing with -EPERM. ++ * Detlev Wengorz : Copy protocol for fragments. ++ */ ++ ++#include <asm/uaccess.h> ++#include <asm/system.h> ++#include <linux/types.h> ++#include <linux/kernel.h> ++#include <linux/sched.h> ++#include <linux/mm.h> ++#include <linux/string.h> ++#include <linux/errno.h> ++#include <linux/config.h> ++ ++#include <linux/socket.h> ++#include <linux/sockios.h> ++#include <linux/in.h> ++#include <linux/inet.h> ++#include <linux/netdevice.h> ++#include <linux/etherdevice.h> ++#include <linux/proc_fs.h> ++#include <linux/stat.h> ++#include <linux/init.h> ++ ++#include <net/snmp.h> ++#include <net/ip.h> ++#include <net/protocol.h> ++#include <net/route.h> ++#include <net/tcp.h> ++#include <net/udp.h> ++#include <linux/skbuff.h> ++#include <net/sock.h> ++#include <net/arp.h> ++#include <net/icmp.h> ++#include <net/raw.h> ++#include <net/checksum.h> ++#include <net/inetpeer.h> ++#include <linux/igmp.h> ++#include <linux/netfilter_ipv4.h> ++#include <linux/mroute.h> ++#include <linux/netlink.h> ++ ++/* ++ * Shall we try to damage output packets if routing dev changes? ++ */ ++ ++int sysctl_ip_dynaddr = 0; ++int sysctl_ip_default_ttl = IPDEFTTL; ++ ++/* Generate a checksum for an outgoing IP datagram. */ ++__inline__ void ip_send_check(struct iphdr *iph) ++{ ++ iph->check = 0; ++ iph->check = ip_fast_csum((unsigned char *)iph, iph->ihl); ++} ++ ++/* dev_loopback_xmit for use with netfilter. */ ++static int ip_dev_loopback_xmit(struct sk_buff *newskb) ++{ ++ newskb->mac.raw = newskb->data; ++ __skb_pull(newskb, newskb->nh.raw - newskb->data); ++ newskb->pkt_type = PACKET_LOOPBACK; ++ newskb->ip_summed = CHECKSUM_UNNECESSARY; ++ BUG_TRAP(newskb->dst); ++ ++#ifdef CONFIG_NETFILTER_DEBUG ++ nf_debug_ip_loopback_xmit(newskb); ++#endif ++ netif_rx(newskb); ++ return 0; ++} ++ ++/* Don't just hand NF_HOOK skb->dst->output, in case netfilter hook ++ changes route */ ++static inline int ++output_maybe_reroute(struct sk_buff *skb) ++{ ++ return skb->dst->output(skb); ++} ++ ++/* ++ * Add an ip header to a skbuff and send it out. ++ */ ++int ip_build_and_send_pkt(struct sk_buff *skb, struct sock *sk, ++ u32 saddr, u32 daddr, struct ip_options *opt) ++{ ++ struct rtable *rt = (struct rtable *)skb->dst; ++ struct iphdr *iph; ++ ++ /* Build the IP header. */ ++ if (opt) ++ iph=(struct iphdr *)skb_push(skb,sizeof(struct iphdr) + opt->optlen); ++ else ++ iph=(struct iphdr *)skb_push(skb,sizeof(struct iphdr)); ++ ++ iph->version = 4; ++ iph->ihl = 5; ++ iph->tos = sk->protinfo.af_inet.tos; ++ if (ip_dont_fragment(sk, &rt->u.dst)) ++ iph->frag_off = htons(IP_DF); ++ else ++ iph->frag_off = 0; ++ iph->ttl = sk->protinfo.af_inet.ttl; ++ iph->daddr = rt->rt_dst; ++ iph->saddr = rt->rt_src; ++ iph->protocol = sk->protocol; ++ iph->tot_len = htons(skb->len); ++ ip_select_ident(iph, &rt->u.dst, sk); ++ skb->nh.iph = iph; ++ ++ if (opt && opt->optlen) { ++ iph->ihl += opt->optlen>>2; ++ ip_options_build(skb, opt, daddr, rt, 0); ++ } ++ ip_send_check(iph); ++ ++ /* Send it out. */ ++ return NF_HOOK(PF_INET, NF_IP_LOCAL_OUT, skb, NULL, rt->u.dst.dev, ++ output_maybe_reroute); ++} ++ ++static inline int ip_finish_output2(struct sk_buff *skb) ++{ ++ struct dst_entry *dst = skb->dst; ++ struct hh_cache *hh = dst->hh; ++ ++#ifdef CONFIG_NETFILTER_DEBUG ++ nf_debug_ip_finish_output2(skb); ++#endif /*CONFIG_NETFILTER_DEBUG*/ ++ ++ if (hh) { ++ int hh_alen; ++ ++ read_lock_bh(&hh->hh_lock); ++ hh_alen = HH_DATA_ALIGN(hh->hh_len); ++ memcpy(skb->data - hh_alen, hh->hh_data, hh_alen); ++ read_unlock_bh(&hh->hh_lock); ++ skb_push(skb, hh->hh_len); ++ return hh->hh_output(skb); ++ } else if (dst->neighbour) ++ return dst->neighbour->output(skb); ++ ++ if (net_ratelimit()) ++ printk(KERN_DEBUG "ip_finish_output2: No header cache and no neighbour!\n"); ++ kfree_skb(skb); ++ return -EINVAL; ++} ++ ++static __inline__ int __ip_finish_output(struct sk_buff *skb) ++{ ++ struct net_device *dev = skb->dst->dev; ++ ++ skb->dev = dev; ++ skb->protocol = htons(ETH_P_IP); ++ ++ return NF_HOOK(PF_INET, NF_IP_POST_ROUTING, skb, NULL, dev, ++ ip_finish_output2); ++} ++ ++int ip_finish_output(struct sk_buff *skb) ++{ ++ return __ip_finish_output(skb); ++} ++ ++int ip_mc_output(struct sk_buff *skb) ++{ ++ struct sock *sk = skb->sk; ++ struct rtable *rt = (struct rtable*)skb->dst; ++ struct net_device *dev = rt->u.dst.dev; ++ ++ /* ++ * If the indicated interface is up and running, send the packet. ++ */ ++ IP_INC_STATS(IpOutRequests); ++#ifdef CONFIG_IP_ROUTE_NAT ++ if (rt->rt_flags & RTCF_NAT) ++ ip_do_nat(skb); ++#endif ++ ++ skb->dev = dev; ++ skb->protocol = htons(ETH_P_IP); ++ ++ /* ++ * Multicasts are looped back for other local users ++ */ ++ ++ if (rt->rt_flags&RTCF_MULTICAST) { ++ if ((!sk || sk->protinfo.af_inet.mc_loop) ++#ifdef CONFIG_IP_MROUTE ++ /* Small optimization: do not loopback not local frames, ++ which returned after forwarding; they will be dropped ++ by ip_mr_input in any case. ++ Note, that local frames are looped back to be delivered ++ to local recipients. ++ ++ This check is duplicated in ip_mr_input at the moment. ++ */ ++ && ((rt->rt_flags&RTCF_LOCAL) || !(IPCB(skb)->flags&IPSKB_FORWARDED)) ++#endif ++ ) { ++ struct sk_buff *newskb = skb_clone(skb, GFP_ATOMIC); ++ if (newskb) ++ NF_HOOK(PF_INET, NF_IP_POST_ROUTING, newskb, NULL, ++ newskb->dev, ++ ip_dev_loopback_xmit); ++ } ++ ++ /* Multicasts with ttl 0 must not go beyond the host */ ++ ++ if (skb->nh.iph->ttl == 0) { ++ kfree_skb(skb); ++ return 0; ++ } ++ } ++ ++ if (rt->rt_flags&RTCF_BROADCAST) { ++ struct sk_buff *newskb = skb_clone(skb, GFP_ATOMIC); ++ if (newskb) ++ NF_HOOK(PF_INET, NF_IP_POST_ROUTING, newskb, NULL, ++ newskb->dev, ip_dev_loopback_xmit); ++ } ++ ++ return __ip_finish_output(skb); ++} ++ ++int ip_output(struct sk_buff *skb) ++{ ++#ifdef CONFIG_IP_ROUTE_NAT ++ struct rtable *rt = (struct rtable*)skb->dst; ++#endif ++ ++ IP_INC_STATS(IpOutRequests); ++ ++#ifdef CONFIG_IP_ROUTE_NAT ++ if (rt->rt_flags&RTCF_NAT) ++ ip_do_nat(skb); ++#endif ++ ++ return __ip_finish_output(skb); ++} ++ ++/* Queues a packet to be sent, and starts the transmitter if necessary. ++ * This routine also needs to put in the total length and compute the ++ * checksum. We use to do this in two stages, ip_build_header() then ++ * this, but that scheme created a mess when routes disappeared etc. ++ * So we do it all here, and the TCP send engine has been changed to ++ * match. (No more unroutable FIN disasters, etc. wheee...) This will ++ * most likely make other reliable transport layers above IP easier ++ * to implement under Linux. ++ */ ++static inline int ip_queue_xmit2(struct sk_buff *skb) ++{ ++ struct sock *sk = skb->sk; ++ struct rtable *rt = (struct rtable *)skb->dst; ++ struct net_device *dev; ++ struct iphdr *iph = skb->nh.iph; ++ ++ dev = rt->u.dst.dev; ++ ++ /* This can happen when the transport layer has segments queued ++ * with a cached route, and by the time we get here things are ++ * re-routed to a device with a different MTU than the original ++ * device. Sick, but we must cover it. ++ */ ++ if (skb_headroom(skb) < dev->hard_header_len && dev->hard_header) { ++ struct sk_buff *skb2; ++ ++ skb2 = skb_realloc_headroom(skb, (dev->hard_header_len + 15) & ~15); ++ kfree_skb(skb); ++ if (skb2 == NULL) ++ return -ENOMEM; ++ if (sk) ++ skb_set_owner_w(skb2, sk); ++ skb = skb2; ++ iph = skb->nh.iph; ++ } ++ ++ if (skb->len > rt->u.dst.pmtu) ++ goto fragment; ++ ++ ip_select_ident(iph, &rt->u.dst, sk); ++ ++ /* Add an IP checksum. */ ++ ip_send_check(iph); ++ ++ skb->priority = sk->priority; ++ return skb->dst->output(skb); ++ ++fragment: ++ if (ip_dont_fragment(sk, &rt->u.dst)) { ++ /* Reject packet ONLY if TCP might fragment ++ * it itself, if were careful enough. ++ */ ++ NETDEBUG(printk(KERN_DEBUG "sending pkt_too_big (len[%u] pmtu[%u]) to self\n", ++ skb->len, rt->u.dst.pmtu)); ++ ++ icmp_send(skb, ICMP_DEST_UNREACH, ICMP_FRAG_NEEDED, ++ htonl(rt->u.dst.pmtu)); ++ kfree_skb(skb); ++ return -EMSGSIZE; ++ } ++ ip_select_ident(iph, &rt->u.dst, sk); ++ if (skb->ip_summed == CHECKSUM_HW && ++ (skb = skb_checksum_help(skb)) == NULL) ++ return -ENOMEM; ++ return ip_fragment(skb, skb->dst->output); ++} ++ ++int ip_queue_xmit(struct sk_buff *skb, int ipfragok) ++{ ++ struct sock *sk = skb->sk; ++ struct ip_options *opt = sk->protinfo.af_inet.opt; ++ struct rtable *rt; ++ struct iphdr *iph; ++ ++ /* Skip all of this if the packet is already routed, ++ * f.e. by something like SCTP. ++ */ ++ rt = (struct rtable *) skb->dst; ++ if (rt != NULL) ++ goto packet_routed; ++ ++ /* Make sure we can route this packet. */ ++ rt = (struct rtable *)__sk_dst_check(sk, 0); ++ if (rt == NULL) { ++ u32 daddr; ++ ++ /* Use correct destination address if we have options. */ ++ daddr = sk->daddr; ++ if(opt && opt->srr) ++ daddr = opt->faddr; ++ ++ /* If this fails, retransmit mechanism of transport layer will ++ * keep trying until route appears or the connection times itself ++ * out. ++ */ ++ if (ip_route_output(&rt, daddr, sk->saddr, ++ RT_CONN_FLAGS(sk), ++ sk->bound_dev_if)) ++ goto no_route; ++ __sk_dst_set(sk, &rt->u.dst); ++ sk->route_caps = rt->u.dst.dev->features; ++ } ++ skb->dst = dst_clone(&rt->u.dst); ++ ++packet_routed: ++ if (opt && opt->is_strictroute && rt->rt_dst != rt->rt_gateway) ++ goto no_route; ++ ++ /* OK, we know where to send it, allocate and build IP header. */ ++ iph = (struct iphdr *) skb_push(skb, sizeof(struct iphdr) + (opt ? opt->optlen : 0)); ++ *((__u16 *)iph) = htons((4 << 12) | (5 << 8) | (sk->protinfo.af_inet.tos & 0xff)); ++ iph->tot_len = htons(skb->len); ++ if (ip_dont_fragment(sk, &rt->u.dst) && !ipfragok) ++ iph->frag_off = htons(IP_DF); ++ else ++ iph->frag_off = 0; ++ iph->ttl = sk->protinfo.af_inet.ttl; ++ iph->protocol = sk->protocol; ++ iph->saddr = rt->rt_src; ++ iph->daddr = rt->rt_dst; ++ skb->nh.iph = iph; ++ /* Transport layer set skb->h.foo itself. */ ++ ++ if(opt && opt->optlen) { ++ iph->ihl += opt->optlen >> 2; ++ ip_options_build(skb, opt, sk->daddr, rt, 0); ++ } ++ ++ return NF_HOOK(PF_INET, NF_IP_LOCAL_OUT, skb, NULL, rt->u.dst.dev, ++ ip_queue_xmit2); ++ ++no_route: ++ IP_INC_STATS(IpOutNoRoutes); ++ kfree_skb(skb); ++ return -EHOSTUNREACH; ++} ++ ++/* ++ * Build and send a packet, with as little as one copy ++ * ++ * Doesn't care much about ip options... option length can be ++ * different for fragment at 0 and other fragments. ++ * ++ * Note that the fragment at the highest offset is sent first, ++ * so the getfrag routine can fill in the TCP/UDP checksum header ++ * field in the last fragment it sends... actually it also helps ++ * the reassemblers, they can put most packets in at the head of ++ * the fragment queue, and they know the total size in advance. This ++ * last feature will measurably improve the Linux fragment handler one ++ * day. ++ * ++ * The callback has five args, an arbitrary pointer (copy of frag), ++ * the source IP address (may depend on the routing table), the ++ * destination address (char *), the offset to copy from, and the ++ * length to be copied. ++ */ ++ ++static int ip_build_xmit_slow(struct sock *sk, ++ int getfrag (const void *, ++ char *, ++ unsigned int, ++ unsigned int, ++ struct sk_buff *), ++ const void *frag, ++ unsigned length, ++ struct ipcm_cookie *ipc, ++ struct rtable *rt, ++ int flags) ++{ ++ unsigned int fraglen, maxfraglen, fragheaderlen; ++ int err; ++ int offset, mf; ++ int mtu; ++ u16 id; ++ ++ int hh_len = (rt->u.dst.dev->hard_header_len + 15)&~15; ++ int nfrags=0; ++ struct ip_options *opt = ipc->opt; ++ int df = 0; ++ ++ mtu = rt->u.dst.pmtu; ++ if (ip_dont_fragment(sk, &rt->u.dst)) ++ df = htons(IP_DF); ++ ++ length -= sizeof(struct iphdr); ++ ++ if (opt) { ++ fragheaderlen = sizeof(struct iphdr) + opt->optlen; ++ maxfraglen = ((mtu-sizeof(struct iphdr)-opt->optlen) & ~7) + fragheaderlen; ++ } else { ++ fragheaderlen = sizeof(struct iphdr); ++ ++ /* ++ * Fragheaderlen is the size of 'overhead' on each buffer. Now work ++ * out the size of the frames to send. ++ */ ++ ++ maxfraglen = ((mtu-sizeof(struct iphdr)) & ~7) + fragheaderlen; ++ } ++ ++ if (length + fragheaderlen > 0xFFFF) { ++ ip_local_error(sk, EMSGSIZE, rt->rt_dst, sk->dport, mtu); ++ return -EMSGSIZE; ++ } ++ ++ /* ++ * Start at the end of the frame by handling the remainder. ++ */ ++ ++ offset = length - (length % (maxfraglen - fragheaderlen)); ++ ++ /* ++ * Amount of memory to allocate for final fragment. ++ */ ++ ++ fraglen = length - offset + fragheaderlen; ++ ++ if (length-offset==0) { ++ fraglen = maxfraglen; ++ offset -= maxfraglen-fragheaderlen; ++ } ++ ++ /* ++ * The last fragment will not have MF (more fragments) set. ++ */ ++ ++ mf = 0; ++ ++ /* ++ * Don't fragment packets for path mtu discovery. ++ */ ++ ++ if (offset > 0 && sk->protinfo.af_inet.pmtudisc==IP_PMTUDISC_DO) { ++ ip_local_error(sk, EMSGSIZE, rt->rt_dst, sk->dport, mtu); ++ return -EMSGSIZE; ++ } ++ if (flags&MSG_PROBE) ++ goto out; ++ ++ /* ++ * Begin outputting the bytes. ++ */ ++ ++ id = sk->protinfo.af_inet.id++; ++ ++ do { ++ char *data; ++ struct sk_buff * skb; ++ ++ /* ++ * Get the memory we require with some space left for alignment. ++ */ ++ if (!(flags & MSG_DONTWAIT) || nfrags == 0) { ++ skb = sock_alloc_send_skb(sk, fraglen + hh_len + 15, ++ (flags & MSG_DONTWAIT), &err); ++ } else { ++ /* On a non-blocking write, we check for send buffer ++ * usage on the first fragment only. ++ */ ++ skb = sock_wmalloc(sk, fraglen + hh_len + 15, 1, ++ sk->allocation); ++ if (!skb) ++ err = -ENOBUFS; ++ } ++ if (skb == NULL) ++ goto error; ++ ++ /* ++ * Fill in the control structures ++ */ ++ ++ skb->priority = sk->priority; ++ skb->dst = dst_clone(&rt->u.dst); ++ skb_reserve(skb, hh_len); ++ ++ /* ++ * Find where to start putting bytes. ++ */ ++ ++ data = skb_put(skb, fraglen); ++ skb->nh.iph = (struct iphdr *)data; ++ ++ /* ++ * Only write IP header onto non-raw packets ++ */ ++ ++ { ++ struct iphdr *iph = (struct iphdr *)data; ++ ++ iph->version = 4; ++ iph->ihl = 5; ++ if (opt) { ++ iph->ihl += opt->optlen>>2; ++ ip_options_build(skb, opt, ++ ipc->addr, rt, offset); ++ } ++ iph->tos = sk->protinfo.af_inet.tos; ++ iph->tot_len = htons(fraglen - fragheaderlen + iph->ihl*4); ++ iph->frag_off = htons(offset>>3)|mf|df; ++ iph->id = id; ++ if (!mf) { ++ if (offset || !df) { ++ /* Select an unpredictable ident only ++ * for packets without DF or having ++ * been fragmented. ++ */ ++ __ip_select_ident(iph, &rt->u.dst); ++ id = iph->id; ++ } ++ ++ /* ++ * Any further fragments will have MF set. ++ */ ++ mf = htons(IP_MF); ++ } ++ if (rt->rt_type == RTN_MULTICAST) ++ iph->ttl = sk->protinfo.af_inet.mc_ttl; ++ else ++ iph->ttl = sk->protinfo.af_inet.ttl; ++ iph->protocol = sk->protocol; ++ iph->check = 0; ++ iph->saddr = rt->rt_src; ++ iph->daddr = rt->rt_dst; ++ iph->check = ip_fast_csum((unsigned char *)iph, iph->ihl); ++ data += iph->ihl*4; ++ } ++ ++ /* ++ * User data callback ++ */ ++ ++ if (getfrag(frag, data, offset, fraglen-fragheaderlen, skb)) { ++ err = -EFAULT; ++ kfree_skb(skb); ++ goto error; ++ } ++ ++ offset -= (maxfraglen-fragheaderlen); ++ fraglen = maxfraglen; ++ ++ nfrags++; ++ ++ err = NF_HOOK(PF_INET, NF_IP_LOCAL_OUT, skb, NULL, ++ skb->dst->dev, output_maybe_reroute); ++ if (err) { ++ if (err > 0) ++ err = sk->protinfo.af_inet.recverr ? net_xmit_errno(err) : 0; ++ if (err) ++ goto error; ++ } ++ } while (offset >= 0); ++ ++ if (nfrags>1) ++ ip_statistics[smp_processor_id()*2 + !in_softirq()].IpFragCreates += nfrags; ++out: ++ return 0; ++ ++error: ++ IP_INC_STATS(IpOutDiscards); ++ if (nfrags>1) ++ ip_statistics[smp_processor_id()*2 + !in_softirq()].IpFragCreates += nfrags; ++ return err; ++} ++ ++/* ++ * Fast path for unfragmented packets. ++ */ ++int ip_build_xmit(struct sock *sk, ++ int getfrag (const void *, ++ char *, ++ unsigned int, ++ unsigned int, ++ struct sk_buff *), ++ const void *frag, ++ unsigned length, ++ struct ipcm_cookie *ipc, ++ struct rtable *rt, ++ int flags) ++{ ++ int err; ++ struct sk_buff *skb; ++ int df; ++ struct iphdr *iph; ++ ++ /* ++ * Try the simple case first. This leaves fragmented frames, and by ++ * choice RAW frames within 20 bytes of maximum size(rare) to the long path ++ */ ++ ++ if (!sk->protinfo.af_inet.hdrincl) { ++ length += sizeof(struct iphdr); ++ ++ /* ++ * Check for slow path. ++ */ ++ if (length > rt->u.dst.pmtu || ipc->opt != NULL) ++ return ip_build_xmit_slow(sk,getfrag,frag,length,ipc,rt,flags); ++ } else { ++ if (length > rt->u.dst.dev->mtu) { ++ ip_local_error(sk, EMSGSIZE, rt->rt_dst, sk->dport, rt->u.dst.dev->mtu); ++ return -EMSGSIZE; ++ } ++ } ++ if (flags&MSG_PROBE) ++ goto out; ++ ++ /* ++ * Do path mtu discovery if needed. ++ */ ++ df = 0; ++ if (ip_dont_fragment(sk, &rt->u.dst)) ++ df = htons(IP_DF); ++ ++ /* ++ * Fast path for unfragmented frames without options. ++ */ ++ { ++ int hh_len = (rt->u.dst.dev->hard_header_len + 15)&~15; ++ ++ skb = sock_alloc_send_skb(sk, length+hh_len+15, ++ flags&MSG_DONTWAIT, &err); ++ if(skb==NULL) ++ goto error; ++ skb_reserve(skb, hh_len); ++ } ++ ++ skb->priority = sk->priority; ++ skb->dst = dst_clone(&rt->u.dst); ++ ++ skb->nh.iph = iph = (struct iphdr *)skb_put(skb, length); ++ ++ if(!sk->protinfo.af_inet.hdrincl) { ++ iph->version=4; ++ iph->ihl=5; ++ iph->tos=sk->protinfo.af_inet.tos; ++ iph->tot_len = htons(length); ++ iph->frag_off = df; ++ iph->ttl=sk->protinfo.af_inet.mc_ttl; ++ ip_select_ident(iph, &rt->u.dst, sk); ++ if (rt->rt_type != RTN_MULTICAST) ++ iph->ttl=sk->protinfo.af_inet.ttl; ++ iph->protocol=sk->protocol; ++ iph->saddr=rt->rt_src; ++ iph->daddr=rt->rt_dst; ++ iph->check=0; ++ iph->check = ip_fast_csum((unsigned char *)iph, iph->ihl); ++ err = getfrag(frag, ((char *)iph)+iph->ihl*4,0, length-iph->ihl*4, skb); ++ } ++ else ++ err = getfrag(frag, (void *)iph, 0, length, skb); ++ ++ if (err) ++ goto error_fault; ++ ++ err = NF_HOOK(PF_INET, NF_IP_LOCAL_OUT, skb, NULL, rt->u.dst.dev, ++ output_maybe_reroute); ++ if (err > 0) ++ err = sk->protinfo.af_inet.recverr ? net_xmit_errno(err) : 0; ++ if (err) ++ goto error; ++out: ++ return 0; ++ ++error_fault: ++ err = -EFAULT; ++ kfree_skb(skb); ++error: ++ IP_INC_STATS(IpOutDiscards); ++ return err; ++} ++ ++/* ++ * This IP datagram is too large to be sent in one piece. Break it up into ++ * smaller pieces (each of size equal to IP header plus ++ * a block of the data of the original IP data part) that will yet fit in a ++ * single device frame, and queue such a frame for sending. ++ * ++ * Yes this is inefficient, feel free to submit a quicker one. ++ */ ++ ++int ip_fragment(struct sk_buff *skb, int (*output)(struct sk_buff*)) ++{ ++ struct iphdr *iph; ++ int raw = 0; ++ int ptr; ++ struct net_device *dev; ++ struct sk_buff *skb2; ++ unsigned int mtu, hlen, left, len; ++ int offset; ++ int not_last_frag; ++ struct rtable *rt = (struct rtable*)skb->dst; ++ int err = 0; ++ ++ dev = rt->u.dst.dev; ++ ++ /* ++ * Point into the IP datagram header. ++ */ ++ ++ iph = skb->nh.iph; ++ ++ /* ++ * Setup starting values. ++ */ ++ ++ hlen = iph->ihl * 4; ++ left = skb->len - hlen; /* Space per frame */ ++ mtu = rt->u.dst.pmtu - hlen; /* Size of data space */ ++ ptr = raw + hlen; /* Where to start from */ ++ ++ /* ++ * Fragment the datagram. ++ */ ++ ++ offset = (ntohs(iph->frag_off) & IP_OFFSET) << 3; ++ not_last_frag = iph->frag_off & htons(IP_MF); ++ ++ /* ++ * Keep copying data until we run out. ++ */ ++ ++ while(left > 0) { ++ len = left; ++ /* IF: it doesn't fit, use 'mtu' - the data space left */ ++ if (len > mtu) ++ len = mtu; ++ /* IF: we are not sending upto and including the packet end ++ then align the next start on an eight byte boundary */ ++ if (len < left) { ++ len &= ~7; ++ } ++ /* ++ * Allocate buffer. ++ */ ++ ++ if ((skb2 = alloc_skb(len+hlen+dev->hard_header_len+15,GFP_ATOMIC)) == NULL) { ++ NETDEBUG(printk(KERN_INFO "IP: frag: no memory for new fragment!\n")); ++ err = -ENOMEM; ++ goto fail; ++ } ++ ++ /* ++ * Set up data on packet ++ */ ++ ++ skb2->pkt_type = skb->pkt_type; ++ skb2->priority = skb->priority; ++ skb_reserve(skb2, (dev->hard_header_len+15)&~15); ++ skb_put(skb2, len + hlen); ++ skb2->nh.raw = skb2->data; ++ skb2->h.raw = skb2->data + hlen; ++ skb2->protocol = skb->protocol; ++ skb2->security = skb->security; ++ ++ /* ++ * Charge the memory for the fragment to any owner ++ * it might possess ++ */ ++ ++ if (skb->sk) ++ skb_set_owner_w(skb2, skb->sk); ++ skb2->dst = dst_clone(skb->dst); ++ skb2->dev = skb->dev; ++ ++ /* ++ * Copy the packet header into the new buffer. ++ */ ++ ++ memcpy(skb2->nh.raw, skb->data, hlen); ++ ++ /* ++ * Copy a block of the IP datagram. ++ */ ++ if (skb_copy_bits(skb, ptr, skb2->h.raw, len)) ++ BUG(); ++ left -= len; ++ ++ /* ++ * Fill in the new header fields. ++ */ ++ iph = skb2->nh.iph; ++ iph->frag_off = htons((offset >> 3)); ++ ++ /* ANK: dirty, but effective trick. Upgrade options only if ++ * the segment to be fragmented was THE FIRST (otherwise, ++ * options are already fixed) and make it ONCE ++ * on the initial skb, so that all the following fragments ++ * will inherit fixed options. ++ */ ++ if (offset == 0) ++ ip_options_fragment(skb); ++ ++ /* Copy the flags to each fragment. */ ++ IPCB(skb2)->flags = IPCB(skb)->flags; ++ ++ /* ++ * Added AC : If we are fragmenting a fragment that's not the ++ * last fragment then keep MF on each bit ++ */ ++ if (left > 0 || not_last_frag) ++ iph->frag_off |= htons(IP_MF); ++ ptr += len; ++ offset += len; ++ ++#ifdef CONFIG_NET_SCHED ++ skb2->tc_index = skb->tc_index; ++#endif ++#ifdef CONFIG_NETFILTER ++ skb2->nfmark = skb->nfmark; ++ skb2->nfcache = skb->nfcache; ++ /* Connection association is same as pre-frag packet */ ++ skb2->nfct = skb->nfct; ++ nf_conntrack_get(skb2->nfct); ++#ifdef CONFIG_NETFILTER_DEBUG ++ skb2->nf_debug = skb->nf_debug; ++#endif ++#endif ++ ++ /* ++ * Put this fragment into the sending queue. ++ */ ++ ++ IP_INC_STATS(IpFragCreates); ++ ++ iph->tot_len = htons(len + hlen); ++ ++ ip_send_check(iph); ++ ++ err = output(skb2); ++ if (err) ++ goto fail; ++ } ++ kfree_skb(skb); ++ IP_INC_STATS(IpFragOKs); ++ return err; ++ ++fail: ++ kfree_skb(skb); ++ IP_INC_STATS(IpFragFails); ++ return err; ++} ++ ++/* ++ * Fetch data from kernel space and fill in checksum if needed. ++ */ ++static int ip_reply_glue_bits(const void *dptr, char *to, unsigned int offset, ++ unsigned int fraglen, struct sk_buff *skb) ++{ ++ struct ip_reply_arg *dp = (struct ip_reply_arg*)dptr; ++ u16 *pktp = (u16 *)to; ++ struct iovec *iov; ++ int len; ++ int hdrflag = 1; ++ ++ iov = &dp->iov[0]; ++ if (offset >= iov->iov_len) { ++ offset -= iov->iov_len; ++ iov++; ++ hdrflag = 0; ++ } ++ len = iov->iov_len - offset; ++ if (fraglen > len) { /* overlapping. */ ++ dp->csum = csum_partial_copy_nocheck(iov->iov_base+offset, to, len, ++ dp->csum); ++ offset = 0; ++ fraglen -= len; ++ to += len; ++ iov++; ++ } ++ ++ dp->csum = csum_partial_copy_nocheck(iov->iov_base+offset, to, fraglen, ++ dp->csum); ++ ++ if (hdrflag && dp->csumoffset) ++ *(pktp + dp->csumoffset) = csum_fold(dp->csum); /* fill in checksum */ ++ return 0; ++} ++ ++/* ++ * Generic function to send a packet as reply to another packet. ++ * Used to send TCP resets so far. ICMP should use this function too. ++ * ++ * Should run single threaded per socket because it uses the sock ++ * structure to pass arguments. ++ */ ++void ip_send_reply(struct sock *sk, struct sk_buff *skb, struct ip_reply_arg *arg, ++ unsigned int len) ++{ ++ struct { ++ struct ip_options opt; ++ char data[40]; ++ } replyopts; ++ struct ipcm_cookie ipc; ++ u32 daddr; ++ struct rtable *rt = (struct rtable*)skb->dst; ++ ++ if (ip_options_echo(&replyopts.opt, skb)) ++ return; ++ ++ daddr = ipc.addr = rt->rt_src; ++ ipc.opt = NULL; ++ ++ if (replyopts.opt.optlen) { ++ ipc.opt = &replyopts.opt; ++ ++ if (ipc.opt->srr) ++ daddr = replyopts.opt.faddr; ++ } ++ ++ if (ip_route_output(&rt, daddr, rt->rt_spec_dst, RT_TOS(skb->nh.iph->tos), 0)) ++ return; ++ ++ /* And let IP do all the hard work. ++ ++ This chunk is not reenterable, hence spinlock. ++ Note that it uses the fact, that this function is called ++ with locally disabled BH and that sk cannot be already spinlocked. ++ */ ++ bh_lock_sock(sk); ++ sk->protinfo.af_inet.tos = skb->nh.iph->tos; ++ sk->priority = skb->priority; ++ sk->protocol = skb->nh.iph->protocol; ++ ip_build_xmit(sk, ip_reply_glue_bits, arg, len, &ipc, rt, MSG_DONTWAIT); ++ bh_unlock_sock(sk); ++ ++ ip_rt_put(rt); ++} ++ ++/* ++ * IP protocol layer initialiser ++ */ ++ ++static struct packet_type ip_packet_type = ++{ ++ __constant_htons(ETH_P_IP), ++ NULL, /* All devices */ ++ ip_rcv, ++ (void*)1, ++ NULL, ++}; ++ ++/* ++ * IP registers the packet type and then calls the subprotocol initialisers ++ */ ++ ++void __init ip_init(void) ++{ ++ dev_add_pack(&ip_packet_type); ++ ++ ip_rt_init(); ++ inet_initpeers(); ++ ++#ifdef CONFIG_IP_MULTICAST ++ proc_net_create("igmp", 0, ip_mc_procinfo); ++#endif ++ proc_net_create("mcfilter", 0, ip_mcf_procinfo); ++} +diff -Nur linux-mips-cvs/net/ipv4/netfilter/Config.in linux-ebtables/net/ipv4/netfilter/Config.in +--- linux-mips-cvs/net/ipv4/netfilter/Config.in 2005-01-20 03:19:25.000000000 +0100 ++++ linux-ebtables/net/ipv4/netfilter/Config.in 2005-02-07 05:52:50.000000000 +0100 +@@ -44,6 +44,9 @@ + dep_tristate ' Unclean match support (EXPERIMENTAL)' CONFIG_IP_NF_MATCH_UNCLEAN $CONFIG_IP_NF_IPTABLES + dep_tristate ' Owner match support (EXPERIMENTAL)' CONFIG_IP_NF_MATCH_OWNER $CONFIG_IP_NF_IPTABLES + fi ++ if [ "$CONFIG_BRIDGE" != "n" ]; then ++ dep_tristate ' Physdev match support' CONFIG_IP_NF_MATCH_PHYSDEV $CONFIG_IP_NF_IPTABLES ++ fi + # The targets + dep_tristate ' Packet filtering' CONFIG_IP_NF_FILTER $CONFIG_IP_NF_IPTABLES + if [ "$CONFIG_IP_NF_FILTER" != "n" ]; then +diff -Nur linux-mips-cvs/net/ipv4/netfilter/Makefile linux-ebtables/net/ipv4/netfilter/Makefile +--- linux-mips-cvs/net/ipv4/netfilter/Makefile 2003-08-13 19:19:30.000000000 +0200 ++++ linux-ebtables/net/ipv4/netfilter/Makefile 2005-02-07 05:52:50.000000000 +0100 +@@ -87,6 +87,8 @@ + obj-$(CONFIG_IP_NF_MATCH_UNCLEAN) += ipt_unclean.o + obj-$(CONFIG_IP_NF_MATCH_TCPMSS) += ipt_tcpmss.o + ++obj-$(CONFIG_IP_NF_MATCH_PHYSDEV) += ipt_physdev.o ++ + # targets + obj-$(CONFIG_IP_NF_TARGET_REJECT) += ipt_REJECT.o + obj-$(CONFIG_IP_NF_TARGET_MIRROR) += ipt_MIRROR.o +diff -Nur linux-mips-cvs/net/ipv4/netfilter/ip_tables.c linux-ebtables/net/ipv4/netfilter/ip_tables.c +--- linux-mips-cvs/net/ipv4/netfilter/ip_tables.c 2005-01-20 03:19:25.000000000 +0100 ++++ linux-ebtables/net/ipv4/netfilter/ip_tables.c 2005-02-07 05:52:50.000000000 +0100 +@@ -118,12 +118,19 @@ + static inline int + ip_packet_match(const struct iphdr *ip, + const char *indev, ++#if defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE) ++ const char *physindev, ++#endif + const char *outdev, ++#if defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE) ++ const char *physoutdev, ++#endif + const struct ipt_ip *ipinfo, + int isfrag) + { + size_t i; + unsigned long ret; ++ unsigned long ret2 = 1; + + #define FWINV(bool,invflg) ((bool) ^ !!(ipinfo->invflags & invflg)) + +@@ -153,7 +160,15 @@ + & ((const unsigned long *)ipinfo->iniface_mask)[i]; + } + +- if (FWINV(ret != 0, IPT_INV_VIA_IN)) { ++#if defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE) ++ for (i = 0, ret2 = 0; i < IFNAMSIZ/sizeof(unsigned long); i++) { ++ ret2 |= (((const unsigned long *)physindev)[i] ++ ^ ((const unsigned long *)ipinfo->iniface)[i]) ++ & ((const unsigned long *)ipinfo->iniface_mask)[i]; ++ } ++#endif ++ ++ if (FWINV(ret != 0 && ret2 != 0, IPT_INV_VIA_IN)) { + dprintf("VIA in mismatch (%s vs %s).%s\n", + indev, ipinfo->iniface, + ipinfo->invflags&IPT_INV_VIA_IN ?" (INV)":""); +@@ -166,7 +181,15 @@ + & ((const unsigned long *)ipinfo->outiface_mask)[i]; + } + +- if (FWINV(ret != 0, IPT_INV_VIA_OUT)) { ++#if defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE) ++ for (i = 0, ret2 = 0; i < IFNAMSIZ/sizeof(unsigned long); i++) { ++ ret2 |= (((const unsigned long *)physoutdev)[i] ++ ^ ((const unsigned long *)ipinfo->outiface)[i]) ++ & ((const unsigned long *)ipinfo->outiface_mask)[i]; ++ } ++#endif ++ ++ if (FWINV(ret != 0 && ret2 != 0, IPT_INV_VIA_OUT)) { + dprintf("VIA out mismatch (%s vs %s).%s\n", + outdev, ipinfo->outiface, + ipinfo->invflags&IPT_INV_VIA_OUT ?" (INV)":""); +@@ -265,6 +288,9 @@ + /* Initializing verdict to NF_DROP keeps gcc happy. */ + unsigned int verdict = NF_DROP; + const char *indev, *outdev; ++#if defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE) ++ const char *physindev, *physoutdev; ++#endif + void *table_base; + struct ipt_entry *e, *back; + +@@ -274,6 +300,13 @@ + datalen = (*pskb)->len - ip->ihl * 4; + indev = in ? in->name : nulldevname; + outdev = out ? out->name : nulldevname; ++#if defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE) ++ physindev = ((*pskb)->nf_bridge && (*pskb)->nf_bridge->physindev) ? ++ (*pskb)->nf_bridge->physindev->name : nulldevname; ++ physoutdev = ((*pskb)->nf_bridge && (*pskb)->nf_bridge->physoutdev) ? ++ (*pskb)->nf_bridge->physoutdev->name : nulldevname; ++#endif ++ + /* We handle fragments by dealing with the first fragment as + * if it was a normal packet. All other fragments are treated + * normally, except that they will NEVER match rules that ask +@@ -309,7 +342,15 @@ + IP_NF_ASSERT(e); + IP_NF_ASSERT(back); + (*pskb)->nfcache |= e->nfcache; +- if (ip_packet_match(ip, indev, outdev, &e->ip, offset)) { ++ if (ip_packet_match(ip, indev, ++#if defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE) ++ physindev, ++#endif ++ outdev, ++#if defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE) ++ physoutdev, ++#endif ++ &e->ip, offset)) { + struct ipt_entry_target *t; + + if (IPT_MATCH_ITERATE(e, do_match, +diff -Nur linux-mips-cvs/net/ipv4/netfilter/ipt_LOG.c linux-ebtables/net/ipv4/netfilter/ipt_LOG.c +--- linux-mips-cvs/net/ipv4/netfilter/ipt_LOG.c 2003-11-17 02:07:48.000000000 +0100 ++++ linux-ebtables/net/ipv4/netfilter/ipt_LOG.c 2005-02-07 05:52:50.000000000 +0100 +@@ -316,6 +316,18 @@ + loginfo->prefix, + in ? in->name : "", + out ? out->name : ""); ++#if defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE) ++ if ((*pskb)->nf_bridge) { ++ struct net_device *physindev = (*pskb)->nf_bridge->physindev; ++ struct net_device *physoutdev = (*pskb)->nf_bridge->physoutdev; ++ ++ if (physindev && in != physindev) ++ printk("PHYSIN=%s ", physindev->name); ++ if (physoutdev && out != physoutdev) ++ printk("PHYSOUT=%s ", physoutdev->name); ++ } ++#endif ++ + if (in && !out) { + /* MAC logging for input chain only. */ + printk("MAC="); +diff -Nur linux-mips-cvs/net/ipv4/netfilter/ipt_REJECT.c linux-ebtables/net/ipv4/netfilter/ipt_REJECT.c +--- linux-mips-cvs/net/ipv4/netfilter/ipt_REJECT.c 2005-01-20 03:19:25.000000000 +0100 ++++ linux-ebtables/net/ipv4/netfilter/ipt_REJECT.c 2005-02-07 05:52:50.000000000 +0100 +@@ -15,6 +15,9 @@ + #include <net/route.h> + #include <linux/netfilter_ipv4/ip_tables.h> + #include <linux/netfilter_ipv4/ipt_REJECT.h> ++#ifdef CONFIG_BRIDGE_NETFILTER ++#include <linux/netfilter_bridge.h> ++#endif + + #if 0 + #define DEBUGP printk +@@ -29,7 +32,13 @@ + struct rt_key key = {}; + struct rtable *rt; + +- if (hook != NF_IP_FORWARD) { ++ /* We don't require ip forwarding to be enabled to be able to ++ * send a RST reply for bridged traffic. */ ++ if (hook != NF_IP_FORWARD ++#ifdef CONFIG_BRIDGE_NETFILTER ++ || (skb->nf_bridge && skb->nf_bridge->mask & BRNF_BRIDGED) ++#endif ++ ) { + key.dst = iph->saddr; + if (hook == NF_IP_LOCAL_IN) + key.src = iph->daddr; +diff -Nur linux-mips-cvs/net/ipv4/netfilter/ipt_REJECT.c.orig linux-ebtables/net/ipv4/netfilter/ipt_REJECT.c.orig +--- linux-mips-cvs/net/ipv4/netfilter/ipt_REJECT.c.orig 1970-01-01 01:00:00.000000000 +0100 ++++ linux-ebtables/net/ipv4/netfilter/ipt_REJECT.c.orig 2005-01-20 03:19:25.000000000 +0100 +@@ -0,0 +1,426 @@ ++/* ++ * This is a module which is used for rejecting packets. ++ * Added support for customized reject packets (Jozsef Kadlecsik). ++ * Added support for ICMP type-3-code-13 (Maciej Soltysiak). [RFC 1812] ++ */ ++#include <linux/config.h> ++#include <linux/module.h> ++#include <linux/skbuff.h> ++#include <linux/ip.h> ++#include <linux/udp.h> ++#include <linux/icmp.h> ++#include <net/icmp.h> ++#include <net/ip.h> ++#include <net/tcp.h> ++#include <net/route.h> ++#include <linux/netfilter_ipv4/ip_tables.h> ++#include <linux/netfilter_ipv4/ipt_REJECT.h> ++ ++#if 0 ++#define DEBUGP printk ++#else ++#define DEBUGP(format, args...) ++#endif ++ ++static inline struct rtable *route_reverse(struct sk_buff *skb, int hook) ++{ ++ struct iphdr *iph = skb->nh.iph; ++ struct dst_entry *odst; ++ struct rt_key key = {}; ++ struct rtable *rt; ++ ++ if (hook != NF_IP_FORWARD) { ++ key.dst = iph->saddr; ++ if (hook == NF_IP_LOCAL_IN) ++ key.src = iph->daddr; ++ key.tos = RT_TOS(iph->tos); ++ ++ if (ip_route_output_key(&rt, &key) != 0) ++ return NULL; ++ } else { ++ /* non-local src, find valid iif to satisfy ++ * rp-filter when calling ip_route_input. */ ++ key.dst = iph->daddr; ++ if (ip_route_output_key(&rt, &key) != 0) ++ return NULL; ++ ++ odst = skb->dst; ++ if (ip_route_input(skb, iph->saddr, iph->daddr, ++ RT_TOS(iph->tos), rt->u.dst.dev) != 0) { ++ dst_release(&rt->u.dst); ++ return NULL; ++ } ++ dst_release(&rt->u.dst); ++ rt = (struct rtable *)skb->dst; ++ skb->dst = odst; ++ } ++ ++ if (rt->u.dst.error) { ++ dst_release(&rt->u.dst); ++ rt = NULL; ++ } ++ ++ return rt; ++} ++ ++/* Send RST reply */ ++static void send_reset(struct sk_buff *oldskb, int hook) ++{ ++ struct sk_buff *nskb; ++ struct tcphdr *otcph, *tcph; ++ struct rtable *rt; ++ unsigned int otcplen; ++ u_int16_t tmp_port; ++ u_int32_t tmp_addr; ++ int needs_ack; ++ int hh_len; ++ ++ /* IP header checks: fragment, too short. */ ++ if (oldskb->nh.iph->frag_off & htons(IP_OFFSET) ++ || oldskb->len < (oldskb->nh.iph->ihl<<2) + sizeof(struct tcphdr)) ++ return; ++ ++ otcph = (struct tcphdr *)((u_int32_t*)oldskb->nh.iph + oldskb->nh.iph->ihl); ++ otcplen = oldskb->len - oldskb->nh.iph->ihl*4; ++ ++ /* No RST for RST. */ ++ if (otcph->rst) ++ return; ++ ++ /* Check checksum. */ ++ if (tcp_v4_check(otcph, otcplen, oldskb->nh.iph->saddr, ++ oldskb->nh.iph->daddr, ++ csum_partial((char *)otcph, otcplen, 0)) != 0) ++ return; ++ ++ if ((rt = route_reverse(oldskb, hook)) == NULL) ++ return; ++ ++ hh_len = (rt->u.dst.dev->hard_header_len + 15)&~15; ++ ++ ++ /* Copy skb (even if skb is about to be dropped, we can't just ++ clone it because there may be other things, such as tcpdump, ++ interested in it). We also need to expand headroom in case ++ hh_len of incoming interface < hh_len of outgoing interface */ ++ nskb = skb_copy_expand(oldskb, hh_len, skb_tailroom(oldskb), ++ GFP_ATOMIC); ++ if (!nskb) { ++ dst_release(&rt->u.dst); ++ return; ++ } ++ ++ dst_release(nskb->dst); ++ nskb->dst = &rt->u.dst; ++ ++ /* This packet will not be the same as the other: clear nf fields */ ++ nf_reset(nskb); ++ nskb->nfcache = 0; ++ nskb->nfmark = 0; ++ ++ tcph = (struct tcphdr *)((u_int32_t*)nskb->nh.iph + nskb->nh.iph->ihl); ++ ++ /* Swap source and dest */ ++ tmp_addr = nskb->nh.iph->saddr; ++ nskb->nh.iph->saddr = nskb->nh.iph->daddr; ++ nskb->nh.iph->daddr = tmp_addr; ++ tmp_port = tcph->source; ++ tcph->source = tcph->dest; ++ tcph->dest = tmp_port; ++ ++ /* Truncate to length (no data) */ ++ tcph->doff = sizeof(struct tcphdr)/4; ++ skb_trim(nskb, nskb->nh.iph->ihl*4 + sizeof(struct tcphdr)); ++ nskb->nh.iph->tot_len = htons(nskb->len); ++ ++ if (tcph->ack) { ++ needs_ack = 0; ++ tcph->seq = otcph->ack_seq; ++ tcph->ack_seq = 0; ++ } else { ++ needs_ack = 1; ++ tcph->ack_seq = htonl(ntohl(otcph->seq) + otcph->syn + otcph->fin ++ + otcplen - (otcph->doff<<2)); ++ tcph->seq = 0; ++ } ++ ++ /* Reset flags */ ++ ((u_int8_t *)tcph)[13] = 0; ++ tcph->rst = 1; ++ tcph->ack = needs_ack; ++ ++ tcph->window = 0; ++ tcph->urg_ptr = 0; ++ ++ /* Adjust TCP checksum */ ++ tcph->check = 0; ++ tcph->check = tcp_v4_check(tcph, sizeof(struct tcphdr), ++ nskb->nh.iph->saddr, ++ nskb->nh.iph->daddr, ++ csum_partial((char *)tcph, ++ sizeof(struct tcphdr), 0)); ++ ++ /* Adjust IP TTL, DF */ ++ nskb->nh.iph->ttl = MAXTTL; ++ /* Set DF, id = 0 */ ++ nskb->nh.iph->frag_off = htons(IP_DF); ++ nskb->nh.iph->id = 0; ++ ++ /* Adjust IP checksum */ ++ nskb->nh.iph->check = 0; ++ nskb->nh.iph->check = ip_fast_csum((unsigned char *)nskb->nh.iph, ++ nskb->nh.iph->ihl); ++ ++ /* "Never happens" */ ++ if (nskb->len > nskb->dst->pmtu) ++ goto free_nskb; ++ ++ nf_ct_attach(nskb, oldskb); ++ ++ NF_HOOK(PF_INET, NF_IP_LOCAL_OUT, nskb, NULL, nskb->dst->dev, ++ ip_finish_output); ++ return; ++ ++ free_nskb: ++ kfree_skb(nskb); ++} ++ ++static void send_unreach(struct sk_buff *skb_in, int code) ++{ ++ struct iphdr *iph; ++ struct udphdr *udph; ++ struct icmphdr *icmph; ++ struct sk_buff *nskb; ++ u32 saddr; ++ u8 tos; ++ int hh_len, length; ++ struct rtable *rt = (struct rtable*)skb_in->dst; ++ unsigned char *data; ++ ++ if (!rt) ++ return; ++ ++ /* FIXME: Use sysctl number. --RR */ ++ if (!xrlim_allow(&rt->u.dst, 1*HZ)) ++ return; ++ ++ iph = skb_in->nh.iph; ++ ++ /* No replies to physical multicast/broadcast */ ++ if (skb_in->pkt_type!=PACKET_HOST) ++ return; ++ ++ /* Now check at the protocol level */ ++ if (rt->rt_flags&(RTCF_BROADCAST|RTCF_MULTICAST)) ++ return; ++ ++ /* Only reply to fragment 0. */ ++ if (iph->frag_off&htons(IP_OFFSET)) ++ return; ++ ++ /* if UDP checksum is set, verify it's correct */ ++ if (iph->protocol == IPPROTO_UDP ++ && skb_in->tail-(u8*)iph >= sizeof(struct udphdr)) { ++ int datalen = skb_in->len - (iph->ihl<<2); ++ udph = (struct udphdr *)((char *)iph + (iph->ihl<<2)); ++ if (udph->check ++ && csum_tcpudp_magic(iph->saddr, iph->daddr, ++ datalen, IPPROTO_UDP, ++ csum_partial((char *)udph, datalen, ++ 0)) != 0) ++ return; ++ } ++ ++ /* If we send an ICMP error to an ICMP error a mess would result.. */ ++ if (iph->protocol == IPPROTO_ICMP ++ && skb_in->tail-(u8*)iph >= sizeof(struct icmphdr)) { ++ icmph = (struct icmphdr *)((char *)iph + (iph->ihl<<2)); ++ /* Between echo-reply (0) and timestamp (13), ++ everything except echo-request (8) is an error. ++ Also, anything greater than NR_ICMP_TYPES is ++ unknown, and hence should be treated as an error... */ ++ if ((icmph->type < ICMP_TIMESTAMP ++ && icmph->type != ICMP_ECHOREPLY ++ && icmph->type != ICMP_ECHO) ++ || icmph->type > NR_ICMP_TYPES) ++ return; ++ } ++ ++ saddr = iph->daddr; ++ if (!(rt->rt_flags & RTCF_LOCAL)) ++ saddr = 0; ++ ++ tos = (iph->tos & IPTOS_TOS_MASK) | IPTOS_PREC_INTERNETCONTROL; ++ ++ if (ip_route_output(&rt, iph->saddr, saddr, RT_TOS(tos), 0)) ++ return; ++ ++ /* RFC says return as much as we can without exceeding 576 bytes. */ ++ length = skb_in->len + sizeof(struct iphdr) + sizeof(struct icmphdr); ++ ++ if (length > rt->u.dst.pmtu) ++ length = rt->u.dst.pmtu; ++ if (length > 576) ++ length = 576; ++ ++ hh_len = (rt->u.dst.dev->hard_header_len + 15)&~15; ++ ++ nskb = alloc_skb(hh_len+15+length, GFP_ATOMIC); ++ if (!nskb) { ++ ip_rt_put(rt); ++ return; ++ } ++ ++ nskb->priority = 0; ++ nskb->dst = &rt->u.dst; ++ skb_reserve(nskb, hh_len); ++ ++ /* Set up IP header */ ++ iph = nskb->nh.iph ++ = (struct iphdr *)skb_put(nskb, sizeof(struct iphdr)); ++ iph->version=4; ++ iph->ihl=5; ++ iph->tos=tos; ++ iph->tot_len = htons(length); ++ ++ /* PMTU discovery never applies to ICMP packets. */ ++ iph->frag_off = 0; ++ ++ iph->ttl = MAXTTL; ++ ip_select_ident(iph, &rt->u.dst, NULL); ++ iph->protocol=IPPROTO_ICMP; ++ iph->saddr=rt->rt_src; ++ iph->daddr=rt->rt_dst; ++ iph->check=0; ++ iph->check = ip_fast_csum((unsigned char *)iph, iph->ihl); ++ ++ /* Set up ICMP header. */ ++ icmph = nskb->h.icmph ++ = (struct icmphdr *)skb_put(nskb, sizeof(struct icmphdr)); ++ icmph->type = ICMP_DEST_UNREACH; ++ icmph->code = code; ++ icmph->un.gateway = 0; ++ icmph->checksum = 0; ++ ++ /* Copy as much of original packet as will fit */ ++ data = skb_put(nskb, ++ length - sizeof(struct iphdr) - sizeof(struct icmphdr)); ++ /* FIXME: won't work with nonlinear skbs --RR */ ++ memcpy(data, skb_in->nh.iph, ++ length - sizeof(struct iphdr) - sizeof(struct icmphdr)); ++ icmph->checksum = ip_compute_csum((unsigned char *)icmph, ++ length - sizeof(struct iphdr)); ++ ++ nf_ct_attach(nskb, skb_in); ++ ++ NF_HOOK(PF_INET, NF_IP_LOCAL_OUT, nskb, NULL, nskb->dst->dev, ++ ip_finish_output); ++} ++ ++static unsigned int reject(struct sk_buff **pskb, ++ unsigned int hooknum, ++ const struct net_device *in, ++ const struct net_device *out, ++ const void *targinfo, ++ void *userinfo) ++{ ++ const struct ipt_reject_info *reject = targinfo; ++ ++ /* Our naive response construction doesn't deal with IP ++ options, and probably shouldn't try. */ ++ if ((*pskb)->nh.iph->ihl<<2 != sizeof(struct iphdr)) ++ return NF_DROP; ++ ++ /* WARNING: This code causes reentry within iptables. ++ This means that the iptables jump stack is now crap. We ++ must return an absolute verdict. --RR */ ++ switch (reject->with) { ++ case IPT_ICMP_NET_UNREACHABLE: ++ send_unreach(*pskb, ICMP_NET_UNREACH); ++ break; ++ case IPT_ICMP_HOST_UNREACHABLE: ++ send_unreach(*pskb, ICMP_HOST_UNREACH); ++ break; ++ case IPT_ICMP_PROT_UNREACHABLE: ++ send_unreach(*pskb, ICMP_PROT_UNREACH); ++ break; ++ case IPT_ICMP_PORT_UNREACHABLE: ++ send_unreach(*pskb, ICMP_PORT_UNREACH); ++ break; ++ case IPT_ICMP_NET_PROHIBITED: ++ send_unreach(*pskb, ICMP_NET_ANO); ++ break; ++ case IPT_ICMP_HOST_PROHIBITED: ++ send_unreach(*pskb, ICMP_HOST_ANO); ++ break; ++ case IPT_ICMP_ADMIN_PROHIBITED: ++ send_unreach(*pskb, ICMP_PKT_FILTERED); ++ break; ++ case IPT_TCP_RESET: ++ send_reset(*pskb, hooknum); ++ case IPT_ICMP_ECHOREPLY: ++ /* Doesn't happen. */ ++ break; ++ } ++ ++ return NF_DROP; ++} ++ ++static int check(const char *tablename, ++ const struct ipt_entry *e, ++ void *targinfo, ++ unsigned int targinfosize, ++ unsigned int hook_mask) ++{ ++ const struct ipt_reject_info *rejinfo = targinfo; ++ ++ if (targinfosize != IPT_ALIGN(sizeof(struct ipt_reject_info))) { ++ DEBUGP("REJECT: targinfosize %u != 0\n", targinfosize); ++ return 0; ++ } ++ ++ /* Only allow these for packet filtering. */ ++ if (strcmp(tablename, "filter") != 0) { ++ DEBUGP("REJECT: bad table `%s'.\n", tablename); ++ return 0; ++ } ++ if ((hook_mask & ~((1 << NF_IP_LOCAL_IN) ++ | (1 << NF_IP_FORWARD) ++ | (1 << NF_IP_LOCAL_OUT))) != 0) { ++ DEBUGP("REJECT: bad hook mask %X\n", hook_mask); ++ return 0; ++ } ++ ++ if (rejinfo->with == IPT_ICMP_ECHOREPLY) { ++ printk("REJECT: ECHOREPLY no longer supported.\n"); ++ return 0; ++ } else if (rejinfo->with == IPT_TCP_RESET) { ++ /* Must specify that it's a TCP packet */ ++ if (e->ip.proto != IPPROTO_TCP ++ || (e->ip.invflags & IPT_INV_PROTO)) { ++ DEBUGP("REJECT: TCP_RESET illegal for non-tcp\n"); ++ return 0; ++ } ++ } ++ ++ return 1; ++} ++ ++static struct ipt_target ipt_reject_reg ++= { { NULL, NULL }, "REJECT", reject, check, NULL, THIS_MODULE }; ++ ++static int __init init(void) ++{ ++ if (ipt_register_target(&ipt_reject_reg)) ++ return -EINVAL; ++ return 0; ++} ++ ++static void __exit fini(void) ++{ ++ ipt_unregister_target(&ipt_reject_reg); ++} ++ ++module_init(init); ++module_exit(fini); ++MODULE_LICENSE("GPL"); +diff -Nur linux-mips-cvs/net/ipv4/netfilter/ipt_physdev.c linux-ebtables/net/ipv4/netfilter/ipt_physdev.c +--- linux-mips-cvs/net/ipv4/netfilter/ipt_physdev.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux-ebtables/net/ipv4/netfilter/ipt_physdev.c 2005-02-07 05:52:50.000000000 +0100 +@@ -0,0 +1,127 @@ ++/* Kernel module to match the bridge port in and ++ * out device for IP packets coming into contact with a bridge. */ ++#include <linux/module.h> ++#include <linux/skbuff.h> ++#include <linux/netfilter_ipv4/ipt_physdev.h> ++#include <linux/netfilter_ipv4/ip_tables.h> ++#include <linux/netfilter_bridge.h> ++#include <linux/netdevice.h> ++#define MATCH 1 ++#define NOMATCH 0 ++ ++static int ++match(const struct sk_buff *skb, ++ const struct net_device *in, ++ const struct net_device *out, ++ const void *matchinfo, ++ int offset, ++ const void *hdr, ++ u_int16_t datalen, ++ int *hotdrop) ++{ ++ int i; ++ static const char nulldevname[IFNAMSIZ] = { 0 }; ++ const struct ipt_physdev_info *info = matchinfo; ++ unsigned long ret; ++ const char *indev, *outdev; ++ struct nf_bridge_info *nf_bridge; ++ ++ /* Not a bridged IP packet or no info available yet: ++ * LOCAL_OUT/mangle and LOCAL_OUT/nat don't know if ++ * the destination device will be a bridge. */ ++ if (!(nf_bridge = skb->nf_bridge)) { ++ /* Return MATCH if the invert flags of the used options are on */ ++ if ((info->bitmask & IPT_PHYSDEV_OP_BRIDGED) && ++ !(info->invert & IPT_PHYSDEV_OP_BRIDGED)) ++ return NOMATCH; ++ if ((info->bitmask & IPT_PHYSDEV_OP_ISIN) && ++ !(info->invert & IPT_PHYSDEV_OP_ISIN)) ++ return NOMATCH; ++ if ((info->bitmask & IPT_PHYSDEV_OP_ISOUT) && ++ !(info->invert & IPT_PHYSDEV_OP_ISOUT)) ++ return NOMATCH; ++ if ((info->bitmask & IPT_PHYSDEV_OP_IN) && ++ !(info->invert & IPT_PHYSDEV_OP_IN)) ++ return NOMATCH; ++ if ((info->bitmask & IPT_PHYSDEV_OP_OUT) && ++ !(info->invert & IPT_PHYSDEV_OP_OUT)) ++ return NOMATCH; ++ return MATCH; ++ } ++ ++ /* This only makes sense in the FORWARD and POSTROUTING chains */ ++ if ((info->bitmask & IPT_PHYSDEV_OP_BRIDGED) && ++ (!!(nf_bridge->mask & BRNF_BRIDGED) ^ ++ !(info->invert & IPT_PHYSDEV_OP_BRIDGED))) ++ return NOMATCH; ++ ++ if ((info->bitmask & IPT_PHYSDEV_OP_ISIN && ++ (!nf_bridge->physindev ^ !!(info->invert & IPT_PHYSDEV_OP_ISIN))) || ++ (info->bitmask & IPT_PHYSDEV_OP_ISOUT && ++ (!nf_bridge->physoutdev ^ !!(info->invert & IPT_PHYSDEV_OP_ISOUT)))) ++ return NOMATCH; ++ ++ if (!(info->bitmask & IPT_PHYSDEV_OP_IN)) ++ goto match_outdev; ++ indev = nf_bridge->physindev ? nf_bridge->physindev->name : nulldevname; ++ for (i = 0, ret = 0; i < IFNAMSIZ/sizeof(unsigned long); i++) { ++ ret |= (((const unsigned long *)indev)[i] ++ ^ ((const unsigned long *)info->physindev)[i]) ++ & ((const unsigned long *)info->in_mask)[i]; ++ } ++ ++ if ((ret == 0) ^ !(info->invert & IPT_PHYSDEV_OP_IN)) ++ return NOMATCH; ++ ++match_outdev: ++ if (!(info->bitmask & IPT_PHYSDEV_OP_OUT)) ++ return MATCH; ++ outdev = nf_bridge->physoutdev ? ++ nf_bridge->physoutdev->name : nulldevname; ++ for (i = 0, ret = 0; i < IFNAMSIZ/sizeof(unsigned long); i++) { ++ ret |= (((const unsigned long *)outdev)[i] ++ ^ ((const unsigned long *)info->physoutdev)[i]) ++ & ((const unsigned long *)info->out_mask)[i]; ++ } ++ ++ return (ret != 0) ^ !(info->invert & IPT_PHYSDEV_OP_OUT); ++} ++ ++static int ++checkentry(const char *tablename, ++ const struct ipt_ip *ip, ++ void *matchinfo, ++ unsigned int matchsize, ++ unsigned int hook_mask) ++{ ++ const struct ipt_physdev_info *info = matchinfo; ++ ++ if (matchsize != IPT_ALIGN(sizeof(struct ipt_physdev_info))) ++ return 0; ++ if (!(info->bitmask & IPT_PHYSDEV_OP_MASK) || ++ info->bitmask & ~IPT_PHYSDEV_OP_MASK) ++ return 0; ++ return 1; ++} ++ ++static struct ipt_match physdev_match = { ++ .name = "physdev", ++ .match = &match, ++ .checkentry = &checkentry, ++ .me = THIS_MODULE, ++}; ++ ++static int __init init(void) ++{ ++ return ipt_register_match(&physdev_match); ++} ++ ++static void __exit fini(void) ++{ ++ ipt_unregister_match(&physdev_match); ++} ++ ++module_init(init); ++module_exit(fini); ++MODULE_LICENSE("GPL"); ++EXPORT_NO_SYMBOLS; |