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-rw-r--r--net/bridge/br_private.h554
1 files changed, 554 insertions, 0 deletions
diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h
new file mode 100644
index 00000000..1ca1b1c7
--- /dev/null
+++ b/net/bridge/br_private.h
@@ -0,0 +1,554 @@
+/*
+ * Linux ethernet bridge
+ *
+ * Authors:
+ * Lennert Buytenhek <buytenh@gnu.org>
+ *
+ * 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.
+ */
+
+#ifndef _BR_PRIVATE_H
+#define _BR_PRIVATE_H
+
+#include <linux/netdevice.h>
+#include <linux/if_bridge.h>
+#include <linux/netpoll.h>
+#include <linux/u64_stats_sync.h>
+#include <net/route.h>
+
+#define BR_HASH_BITS 8
+#define BR_HASH_SIZE (1 << BR_HASH_BITS)
+
+#define BR_HOLD_TIME (1*HZ)
+
+#define BR_PORT_BITS 10
+#define BR_MAX_PORTS (1<<BR_PORT_BITS)
+
+#define BR_VERSION "2.3"
+
+/* Path to usermode spanning tree program */
+#define BR_STP_PROG "/sbin/bridge-stp"
+
+typedef struct bridge_id bridge_id;
+typedef struct mac_addr mac_addr;
+typedef __u16 port_id;
+
+struct bridge_id
+{
+ unsigned char prio[2];
+ unsigned char addr[6];
+};
+
+struct mac_addr
+{
+ unsigned char addr[6];
+};
+
+struct br_ip
+{
+ union {
+ __be32 ip4;
+#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
+ struct in6_addr ip6;
+#endif
+ } u;
+ __be16 proto;
+};
+
+struct net_bridge_fdb_entry
+{
+ struct hlist_node hlist;
+ struct net_bridge_port *dst;
+
+ struct rcu_head rcu;
+ unsigned long updated;
+ unsigned long used;
+ mac_addr addr;
+ unsigned char is_local;
+ unsigned char is_static;
+};
+
+struct net_bridge_port_group {
+ struct net_bridge_port *port;
+ struct net_bridge_port_group __rcu *next;
+ struct hlist_node mglist;
+ struct rcu_head rcu;
+ struct timer_list timer;
+ struct br_ip addr;
+};
+
+struct net_bridge_mdb_entry
+{
+ struct hlist_node hlist[2];
+ struct net_bridge *br;
+ struct net_bridge_port_group __rcu *ports;
+ struct rcu_head rcu;
+ struct timer_list timer;
+ struct br_ip addr;
+ bool mglist;
+};
+
+struct net_bridge_mdb_htable
+{
+ struct hlist_head *mhash;
+ struct rcu_head rcu;
+ struct net_bridge_mdb_htable *old;
+ u32 size;
+ u32 max;
+ u32 secret;
+ u32 ver;
+};
+
+struct net_bridge_port
+{
+ struct net_bridge *br;
+ struct net_device *dev;
+ struct list_head list;
+
+ /* STP */
+ u8 priority;
+ u8 state;
+ u16 port_no;
+ unsigned char topology_change_ack;
+ unsigned char config_pending;
+ port_id port_id;
+ port_id designated_port;
+ bridge_id designated_root;
+ bridge_id designated_bridge;
+ u32 path_cost;
+ u32 designated_cost;
+ unsigned long designated_age;
+
+ struct timer_list forward_delay_timer;
+ struct timer_list hold_timer;
+ struct timer_list message_age_timer;
+ struct kobject kobj;
+ struct rcu_head rcu;
+
+ unsigned long flags;
+#define BR_HAIRPIN_MODE 0x00000001
+
+#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
+ u32 multicast_startup_queries_sent;
+ unsigned char multicast_router;
+ struct timer_list multicast_router_timer;
+ struct timer_list multicast_query_timer;
+ struct hlist_head mglist;
+ struct hlist_node rlist;
+#endif
+
+#ifdef CONFIG_SYSFS
+ char sysfs_name[IFNAMSIZ];
+#endif
+
+#ifdef CONFIG_NET_POLL_CONTROLLER
+ struct netpoll *np;
+#endif
+};
+
+#define br_port_exists(dev) (dev->priv_flags & IFF_BRIDGE_PORT)
+
+static inline struct net_bridge_port *br_port_get_rcu(const struct net_device *dev)
+{
+ struct net_bridge_port *port = rcu_dereference(dev->rx_handler_data);
+ return br_port_exists(dev) ? port : NULL;
+}
+
+static inline struct net_bridge_port *br_port_get_rtnl(struct net_device *dev)
+{
+ return br_port_exists(dev) ?
+ rtnl_dereference(dev->rx_handler_data) : NULL;
+}
+
+struct br_cpu_netstats {
+ u64 rx_packets;
+ u64 rx_bytes;
+ u64 tx_packets;
+ u64 tx_bytes;
+ struct u64_stats_sync syncp;
+};
+
+struct net_bridge
+{
+ spinlock_t lock;
+ struct list_head port_list;
+ struct net_device *dev;
+
+ struct br_cpu_netstats __percpu *stats;
+ spinlock_t hash_lock;
+ struct hlist_head hash[BR_HASH_SIZE];
+#ifdef CONFIG_BRIDGE_NETFILTER
+ struct rtable fake_rtable;
+ bool nf_call_iptables;
+ bool nf_call_ip6tables;
+ bool nf_call_arptables;
+#endif
+ unsigned long flags;
+#define BR_SET_MAC_ADDR 0x00000001
+
+ /* STP */
+ bridge_id designated_root;
+ bridge_id bridge_id;
+ u32 root_path_cost;
+ unsigned long max_age;
+ unsigned long hello_time;
+ unsigned long forward_delay;
+ unsigned long bridge_max_age;
+ unsigned long ageing_time;
+ unsigned long bridge_hello_time;
+ unsigned long bridge_forward_delay;
+
+ u8 group_addr[ETH_ALEN];
+ u16 root_port;
+
+ enum {
+ BR_NO_STP, /* no spanning tree */
+ BR_KERNEL_STP, /* old STP in kernel */
+ BR_USER_STP, /* new RSTP in userspace */
+ } stp_enabled;
+
+ unsigned char topology_change;
+ unsigned char topology_change_detected;
+
+#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
+ unsigned char multicast_router;
+
+ u8 multicast_disabled:1;
+
+ u32 hash_elasticity;
+ u32 hash_max;
+
+ u32 multicast_last_member_count;
+ u32 multicast_startup_queries_sent;
+ u32 multicast_startup_query_count;
+
+ unsigned long multicast_last_member_interval;
+ unsigned long multicast_membership_interval;
+ unsigned long multicast_querier_interval;
+ unsigned long multicast_query_interval;
+ unsigned long multicast_query_response_interval;
+ unsigned long multicast_startup_query_interval;
+
+ spinlock_t multicast_lock;
+ struct net_bridge_mdb_htable __rcu *mdb;
+ struct hlist_head router_list;
+
+ struct timer_list multicast_router_timer;
+ struct timer_list multicast_querier_timer;
+ struct timer_list multicast_query_timer;
+#endif
+
+ struct timer_list hello_timer;
+ struct timer_list tcn_timer;
+ struct timer_list topology_change_timer;
+ struct timer_list gc_timer;
+ struct kobject *ifobj;
+};
+
+struct br_input_skb_cb {
+ struct net_device *brdev;
+#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
+ int igmp;
+ int mrouters_only;
+#endif
+};
+
+#define BR_INPUT_SKB_CB(__skb) ((struct br_input_skb_cb *)(__skb)->cb)
+
+#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
+# define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (BR_INPUT_SKB_CB(__skb)->mrouters_only)
+#else
+# define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (0)
+#endif
+
+#define br_printk(level, br, format, args...) \
+ printk(level "%s: " format, (br)->dev->name, ##args)
+
+#define br_err(__br, format, args...) \
+ br_printk(KERN_ERR, __br, format, ##args)
+#define br_warn(__br, format, args...) \
+ br_printk(KERN_WARNING, __br, format, ##args)
+#define br_notice(__br, format, args...) \
+ br_printk(KERN_NOTICE, __br, format, ##args)
+#define br_info(__br, format, args...) \
+ br_printk(KERN_INFO, __br, format, ##args)
+
+#define br_debug(br, format, args...) \
+ pr_debug("%s: " format, (br)->dev->name, ##args)
+
+extern struct notifier_block br_device_notifier;
+extern const u8 br_group_address[ETH_ALEN];
+
+/* called under bridge lock */
+static inline int br_is_root_bridge(const struct net_bridge *br)
+{
+ return !memcmp(&br->bridge_id, &br->designated_root, 8);
+}
+
+/* br_device.c */
+extern void br_dev_setup(struct net_device *dev);
+extern void br_dev_delete(struct net_device *dev, struct list_head *list);
+extern netdev_tx_t br_dev_xmit(struct sk_buff *skb,
+ struct net_device *dev);
+#ifdef CONFIG_NET_POLL_CONTROLLER
+static inline struct netpoll_info *br_netpoll_info(struct net_bridge *br)
+{
+ return br->dev->npinfo;
+}
+
+static inline void br_netpoll_send_skb(const struct net_bridge_port *p,
+ struct sk_buff *skb)
+{
+ struct netpoll *np = p->np;
+
+ if (np)
+ netpoll_send_skb(np, skb);
+}
+
+extern int br_netpoll_enable(struct net_bridge_port *p);
+extern void br_netpoll_disable(struct net_bridge_port *p);
+#else
+static inline struct netpoll_info *br_netpoll_info(struct net_bridge *br)
+{
+ return NULL;
+}
+
+static inline void br_netpoll_send_skb(const struct net_bridge_port *p,
+ struct sk_buff *skb)
+{
+}
+
+static inline int br_netpoll_enable(struct net_bridge_port *p)
+{
+ return 0;
+}
+
+static inline void br_netpoll_disable(struct net_bridge_port *p)
+{
+}
+#endif
+
+/* br_fdb.c */
+extern int br_fdb_init(void);
+extern void br_fdb_fini(void);
+extern void br_fdb_flush(struct net_bridge *br);
+extern void br_fdb_changeaddr(struct net_bridge_port *p,
+ const unsigned char *newaddr);
+extern void br_fdb_cleanup(unsigned long arg);
+extern void br_fdb_delete_by_port(struct net_bridge *br,
+ const struct net_bridge_port *p, int do_all);
+extern struct net_bridge_fdb_entry *__br_fdb_get(struct net_bridge *br,
+ const unsigned char *addr);
+extern int br_fdb_test_addr(struct net_device *dev, unsigned char *addr);
+extern int br_fdb_fillbuf(struct net_bridge *br, void *buf,
+ unsigned long count, unsigned long off);
+extern int br_fdb_insert(struct net_bridge *br,
+ struct net_bridge_port *source,
+ const unsigned char *addr);
+extern void br_fdb_update(struct net_bridge *br,
+ struct net_bridge_port *source,
+ const unsigned char *addr);
+extern int br_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb);
+extern int br_fdb_add(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg);
+extern int br_fdb_delete(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg);
+
+/* br_forward.c */
+extern void br_deliver(const struct net_bridge_port *to,
+ struct sk_buff *skb);
+extern int br_dev_queue_push_xmit(struct sk_buff *skb);
+extern void br_forward(const struct net_bridge_port *to,
+ struct sk_buff *skb, struct sk_buff *skb0);
+extern int br_forward_finish(struct sk_buff *skb);
+extern void br_flood_deliver(struct net_bridge *br, struct sk_buff *skb);
+extern void br_flood_forward(struct net_bridge *br, struct sk_buff *skb,
+ struct sk_buff *skb2);
+
+/* br_if.c */
+extern void br_port_carrier_check(struct net_bridge_port *p);
+extern int br_add_bridge(struct net *net, const char *name);
+extern int br_del_bridge(struct net *net, const char *name);
+extern void br_net_exit(struct net *net);
+extern int br_add_if(struct net_bridge *br,
+ struct net_device *dev);
+extern int br_del_if(struct net_bridge *br,
+ struct net_device *dev);
+extern int br_min_mtu(const struct net_bridge *br);
+extern u32 br_features_recompute(struct net_bridge *br, u32 features);
+
+/* br_input.c */
+extern int br_handle_frame_finish(struct sk_buff *skb);
+extern rx_handler_result_t br_handle_frame(struct sk_buff **pskb);
+
+/* br_ioctl.c */
+extern int br_dev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
+extern int br_ioctl_deviceless_stub(struct net *net, unsigned int cmd, void __user *arg);
+
+/* br_multicast.c */
+#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
+extern int br_multicast_rcv(struct net_bridge *br,
+ struct net_bridge_port *port,
+ struct sk_buff *skb);
+extern struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br,
+ struct sk_buff *skb);
+extern void br_multicast_add_port(struct net_bridge_port *port);
+extern void br_multicast_del_port(struct net_bridge_port *port);
+extern void br_multicast_enable_port(struct net_bridge_port *port);
+extern void br_multicast_disable_port(struct net_bridge_port *port);
+extern void br_multicast_init(struct net_bridge *br);
+extern void br_multicast_open(struct net_bridge *br);
+extern void br_multicast_stop(struct net_bridge *br);
+extern void br_multicast_deliver(struct net_bridge_mdb_entry *mdst,
+ struct sk_buff *skb);
+extern void br_multicast_forward(struct net_bridge_mdb_entry *mdst,
+ struct sk_buff *skb, struct sk_buff *skb2);
+extern int br_multicast_set_router(struct net_bridge *br, unsigned long val);
+extern int br_multicast_set_port_router(struct net_bridge_port *p,
+ unsigned long val);
+extern int br_multicast_toggle(struct net_bridge *br, unsigned long val);
+extern int br_multicast_set_hash_max(struct net_bridge *br, unsigned long val);
+
+static inline bool br_multicast_is_router(struct net_bridge *br)
+{
+ return br->multicast_router == 2 ||
+ (br->multicast_router == 1 &&
+ timer_pending(&br->multicast_router_timer));
+}
+#else
+static inline int br_multicast_rcv(struct net_bridge *br,
+ struct net_bridge_port *port,
+ struct sk_buff *skb)
+{
+ return 0;
+}
+
+static inline struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br,
+ struct sk_buff *skb)
+{
+ return NULL;
+}
+
+static inline void br_multicast_add_port(struct net_bridge_port *port)
+{
+}
+
+static inline void br_multicast_del_port(struct net_bridge_port *port)
+{
+}
+
+static inline void br_multicast_enable_port(struct net_bridge_port *port)
+{
+}
+
+static inline void br_multicast_disable_port(struct net_bridge_port *port)
+{
+}
+
+static inline void br_multicast_init(struct net_bridge *br)
+{
+}
+
+static inline void br_multicast_open(struct net_bridge *br)
+{
+}
+
+static inline void br_multicast_stop(struct net_bridge *br)
+{
+}
+
+static inline void br_multicast_deliver(struct net_bridge_mdb_entry *mdst,
+ struct sk_buff *skb)
+{
+}
+
+static inline void br_multicast_forward(struct net_bridge_mdb_entry *mdst,
+ struct sk_buff *skb,
+ struct sk_buff *skb2)
+{
+}
+static inline bool br_multicast_is_router(struct net_bridge *br)
+{
+ return 0;
+}
+#endif
+
+/* br_netfilter.c */
+#ifdef CONFIG_BRIDGE_NETFILTER
+extern int br_netfilter_init(void);
+extern void br_netfilter_fini(void);
+extern void br_netfilter_rtable_init(struct net_bridge *);
+#else
+#define br_netfilter_init() (0)
+#define br_netfilter_fini() do { } while(0)
+#define br_netfilter_rtable_init(x)
+#endif
+
+/* br_stp.c */
+extern void br_log_state(const struct net_bridge_port *p);
+extern struct net_bridge_port *br_get_port(struct net_bridge *br,
+ u16 port_no);
+extern void br_init_port(struct net_bridge_port *p);
+extern void br_become_designated_port(struct net_bridge_port *p);
+
+extern int br_set_forward_delay(struct net_bridge *br, unsigned long x);
+extern int br_set_hello_time(struct net_bridge *br, unsigned long x);
+extern int br_set_max_age(struct net_bridge *br, unsigned long x);
+
+
+/* br_stp_if.c */
+extern void br_stp_enable_bridge(struct net_bridge *br);
+extern void br_stp_disable_bridge(struct net_bridge *br);
+extern void br_stp_set_enabled(struct net_bridge *br, unsigned long val);
+extern void br_stp_enable_port(struct net_bridge_port *p);
+extern void br_stp_disable_port(struct net_bridge_port *p);
+extern bool br_stp_recalculate_bridge_id(struct net_bridge *br);
+extern void br_stp_change_bridge_id(struct net_bridge *br, const unsigned char *a);
+extern void br_stp_set_bridge_priority(struct net_bridge *br,
+ u16 newprio);
+extern int br_stp_set_port_priority(struct net_bridge_port *p,
+ unsigned long newprio);
+extern int br_stp_set_path_cost(struct net_bridge_port *p,
+ unsigned long path_cost);
+extern ssize_t br_show_bridge_id(char *buf, const struct bridge_id *id);
+
+/* br_stp_bpdu.c */
+struct stp_proto;
+extern void br_stp_rcv(const struct stp_proto *proto, struct sk_buff *skb,
+ struct net_device *dev);
+
+/* br_stp_timer.c */
+extern void br_stp_timer_init(struct net_bridge *br);
+extern void br_stp_port_timer_init(struct net_bridge_port *p);
+extern unsigned long br_timer_value(const struct timer_list *timer);
+
+/* br.c */
+#if defined(CONFIG_ATM_LANE) || defined(CONFIG_ATM_LANE_MODULE)
+extern int (*br_fdb_test_addr_hook)(struct net_device *dev, unsigned char *addr);
+#endif
+
+/* br_netlink.c */
+extern int br_netlink_init(void);
+extern void br_netlink_fini(void);
+extern void br_ifinfo_notify(int event, struct net_bridge_port *port);
+
+#ifdef CONFIG_SYSFS
+/* br_sysfs_if.c */
+extern const struct sysfs_ops brport_sysfs_ops;
+extern int br_sysfs_addif(struct net_bridge_port *p);
+extern int br_sysfs_renameif(struct net_bridge_port *p);
+
+/* br_sysfs_br.c */
+extern int br_sysfs_addbr(struct net_device *dev);
+extern void br_sysfs_delbr(struct net_device *dev);
+
+#else
+
+#define br_sysfs_addif(p) (0)
+#define br_sysfs_renameif(p) (0)
+#define br_sysfs_addbr(dev) (0)
+#define br_sysfs_delbr(dev) do { } while(0)
+#endif /* CONFIG_SYSFS */
+
+#endif
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-06 20:20:31 +0000