diff options
Diffstat (limited to 'target/linux/generic/patches-4.1/644-bridge_optimize_netfilter_hooks.patch')
| -rw-r--r-- | target/linux/generic/patches-4.1/644-bridge_optimize_netfilter_hooks.patch | 172 |
1 files changed, 172 insertions, 0 deletions
diff --git a/target/linux/generic/patches-4.1/644-bridge_optimize_netfilter_hooks.patch b/target/linux/generic/patches-4.1/644-bridge_optimize_netfilter_hooks.patch new file mode 100644 index 0000000000..5b5a7f3ccf --- /dev/null +++ b/target/linux/generic/patches-4.1/644-bridge_optimize_netfilter_hooks.patch @@ -0,0 +1,172 @@ +--- a/net/bridge/br_forward.c ++++ b/net/bridge/br_forward.c +@@ -51,7 +51,7 @@ EXPORT_SYMBOL_GPL(br_dev_queue_push_xmit + + int br_forward_finish(struct sock *sk, struct sk_buff *skb) + { +- return NF_HOOK(NFPROTO_BRIDGE, NF_BR_POST_ROUTING, sk, skb, ++ return BR_HOOK(NFPROTO_BRIDGE, NF_BR_POST_ROUTING, sk, skb, + NULL, skb->dev, + br_dev_queue_push_xmit); + +@@ -76,7 +76,7 @@ static void __br_deliver(const struct ne + return; + } + +- NF_HOOK(NFPROTO_BRIDGE, NF_BR_LOCAL_OUT, NULL, skb, ++ BR_HOOK(NFPROTO_BRIDGE, NF_BR_LOCAL_OUT, NULL, skb, + NULL, skb->dev, + br_forward_finish); + } +@@ -98,7 +98,7 @@ static void __br_forward(const struct ne + skb->dev = to->dev; + skb_forward_csum(skb); + +- NF_HOOK(NFPROTO_BRIDGE, NF_BR_FORWARD, NULL, skb, ++ BR_HOOK(NFPROTO_BRIDGE, NF_BR_FORWARD, NULL, skb, + indev, skb->dev, + br_forward_finish); + } +--- a/net/bridge/br_input.c ++++ b/net/bridge/br_input.c +@@ -55,7 +55,7 @@ static int br_pass_frame_up(struct sk_bu + if (!skb) + return NET_RX_DROP; + +- return NF_HOOK(NFPROTO_BRIDGE, NF_BR_LOCAL_IN, NULL, skb, ++ return BR_HOOK(NFPROTO_BRIDGE, NF_BR_LOCAL_IN, NULL, skb, + indev, NULL, + netif_receive_skb_sk); + } +@@ -284,7 +284,7 @@ rx_handler_result_t br_handle_frame(stru + } + + /* Deliver packet to local host only */ +- if (NF_HOOK(NFPROTO_BRIDGE, NF_BR_LOCAL_IN, NULL, skb, ++ if (BR_HOOK(NFPROTO_BRIDGE, NF_BR_LOCAL_IN, NULL, skb, + skb->dev, NULL, br_handle_local_finish)) { + return RX_HANDLER_CONSUMED; /* consumed by filter */ + } else { +@@ -299,7 +299,7 @@ forward: + if (ether_addr_equal(p->br->dev->dev_addr, dest)) + skb->pkt_type = PACKET_HOST; + +- if (NF_HOOK(NFPROTO_BRIDGE, NF_BR_PRE_ROUTING, NULL, skb, skb->dev, NULL, ++ if (BR_HOOK(NFPROTO_BRIDGE, NF_BR_PRE_ROUTING, NULL, skb, skb->dev, NULL, + br_handle_local_finish)) + break; + +@@ -321,7 +321,7 @@ forward: + if (ether_addr_equal(p->br->dev->dev_addr, dest)) + skb->pkt_type = PACKET_HOST; + +- NF_HOOK(NFPROTO_BRIDGE, NF_BR_PRE_ROUTING, NULL, skb, ++ BR_HOOK(NFPROTO_BRIDGE, NF_BR_PRE_ROUTING, NULL, skb, + skb->dev, NULL, + br_handle_frame_finish); + break; +--- a/net/bridge/br_multicast.c ++++ b/net/bridge/br_multicast.c +@@ -814,7 +814,7 @@ static void __br_multicast_send_query(st + + if (port) { + skb->dev = port->dev; +- NF_HOOK(NFPROTO_BRIDGE, NF_BR_LOCAL_OUT, NULL, skb, ++ BR_HOOK(NFPROTO_BRIDGE, NF_BR_LOCAL_OUT, NULL, skb, + NULL, skb->dev, + br_dev_queue_push_xmit); + } else { +--- a/net/bridge/br_netfilter.c ++++ b/net/bridge/br_netfilter.c +@@ -69,6 +69,15 @@ static int brnf_pass_vlan_indev __read_m + #define IS_ARP(skb) \ + (!skb_vlan_tag_present(skb) && skb->protocol == htons(ETH_P_ARP)) + ++int brnf_call_ebtables __read_mostly = 0; ++EXPORT_SYMBOL_GPL(brnf_call_ebtables); ++ ++bool br_netfilter_run_hooks(void) ++{ ++ return brnf_call_iptables | brnf_call_ip6tables | brnf_call_arptables | ++ brnf_call_ebtables; ++} ++ + static inline __be16 vlan_proto(const struct sk_buff *skb) + { + if (skb_vlan_tag_present(skb)) +--- a/net/bridge/br_private.h ++++ b/net/bridge/br_private.h +@@ -779,6 +779,24 @@ static inline void br_nf_core_fini(void) + #define br_netfilter_rtable_init(x) + #endif + ++#if IS_BUILTIN(CONFIG_BRIDGE_NETFILTER) ++extern int brnf_call_ebtables; ++bool br_netfilter_run_hooks(void); ++#else ++#define br_netfilter_run_hooks() false ++#endif ++ ++static inline int ++BR_HOOK(uint8_t pf, unsigned int hook, struct sock *sk, struct sk_buff *skb, ++ struct net_device *in, struct net_device *out, ++ int (*okfn)(struct sock *, struct sk_buff *)) ++{ ++ if (!br_netfilter_run_hooks()) ++ return okfn(sk, skb); ++ ++ return NF_HOOK(pf, hook, sk, skb, in, out, okfn); ++} ++ + /* br_stp.c */ + void br_log_state(const struct net_bridge_port *p); + void br_set_state(struct net_bridge_port *p, unsigned int state); +--- a/net/bridge/br_stp_bpdu.c ++++ b/net/bridge/br_stp_bpdu.c +@@ -54,7 +54,7 @@ static void br_send_bpdu(struct net_brid + + skb_reset_mac_header(skb); + +- NF_HOOK(NFPROTO_BRIDGE, NF_BR_LOCAL_OUT, NULL, skb, ++ BR_HOOK(NFPROTO_BRIDGE, NF_BR_LOCAL_OUT, NULL, skb, + NULL, skb->dev, + dev_queue_xmit_sk); + } +--- a/net/bridge/netfilter/ebtables.c ++++ b/net/bridge/netfilter/ebtables.c +@@ -2414,11 +2414,19 @@ static int __init ebtables_init(void) + } + + printk(KERN_INFO "Ebtables v2.0 registered\n"); ++ ++#if IS_BUILTIN(CONFIG_BRIDGE_NETFILTER) ++ brnf_call_ebtables = 1; ++#endif ++ + return 0; + } + + static void __exit ebtables_fini(void) + { ++#if IS_BUILTIN(CONFIG_BRIDGE_NETFILTER) ++ brnf_call_ebtables = 0; ++#endif + nf_unregister_sockopt(&ebt_sockopts); + xt_unregister_target(&ebt_standard_target); + printk(KERN_INFO "Ebtables v2.0 unregistered\n"); +--- a/net/Kconfig ++++ b/net/Kconfig +@@ -177,11 +177,11 @@ config NETFILTER_ADVANCED + If unsure, say Y. + + config BRIDGE_NETFILTER +- tristate "Bridged IP/ARP packets filtering" ++ bool "Bridged IP/ARP packets filtering" + depends on BRIDGE + depends on NETFILTER && INET + depends on NETFILTER_ADVANCED +- default m ++ default y + ---help--- + Enabling this option will let arptables resp. iptables see bridged + ARP resp. IP traffic. If you want a bridging firewall, you probably |