diff options
| -rw-r--r-- | include/linux/if_bridge.h | 3 | ||||
| -rw-r--r-- | net/bridge/br_input.c | 20 | ||||
| -rw-r--r-- | net/bridge/br_private.h | 3 | ||||
| -rw-r--r-- | net/core/dev.c | 31 |
4 files changed, 32 insertions, 25 deletions
diff --git a/include/linux/if_bridge.h b/include/linux/if_bridge.h index fd1b6eb94a5f..4ff211d98769 100644 --- a/include/linux/if_bridge.h +++ b/include/linux/if_bridge.h @@ -105,7 +105,8 @@ struct __fdb_entry #include <linux/netdevice.h> extern void brioctl_set(int (*ioctl_hook)(unsigned int, void __user *)); -extern int (*br_handle_frame_hook)(struct net_bridge_port *p, struct sk_buff **pskb); +extern struct sk_buff *(*br_handle_frame_hook)(struct net_bridge_port *p, + struct sk_buff *skb); extern int (*br_should_route_hook)(struct sk_buff **pskb); #endif diff --git a/net/bridge/br_input.c b/net/bridge/br_input.c index a260679afad8..2f5c379d9ffa 100644 --- a/net/bridge/br_input.c +++ b/net/bridge/br_input.c @@ -121,13 +121,11 @@ static inline int is_link_local(const unsigned char *dest) /* * Called via br_handle_frame_hook. - * Return 0 if *pskb should be processed furthur - * 1 if *pskb is handled + * Return NULL if skb is handled * note: already called with rcu_read_lock (preempt_disabled) */ -int br_handle_frame(struct net_bridge_port *p, struct sk_buff **pskb) +struct sk_buff *br_handle_frame(struct net_bridge_port *p, struct sk_buff *skb) { - struct sk_buff *skb = *pskb; const unsigned char *dest = eth_hdr(skb)->h_dest; if (!is_valid_ether_addr(eth_hdr(skb)->h_source)) @@ -135,15 +133,15 @@ int br_handle_frame(struct net_bridge_port *p, struct sk_buff **pskb) if (unlikely(is_link_local(dest))) { skb->pkt_type = PACKET_HOST; - return NF_HOOK(PF_BRIDGE, NF_BR_LOCAL_IN, skb, skb->dev, - NULL, br_handle_local_finish) != 0; + + return (NF_HOOK(PF_BRIDGE, NF_BR_LOCAL_IN, skb, skb->dev, + NULL, br_handle_local_finish) == 0) ? skb : NULL; } if (p->state == BR_STATE_FORWARDING || p->state == BR_STATE_LEARNING) { if (br_should_route_hook) { - if (br_should_route_hook(pskb)) - return 0; - skb = *pskb; + if (br_should_route_hook(&skb)) + return skb; dest = eth_hdr(skb)->h_dest; } @@ -152,10 +150,10 @@ int br_handle_frame(struct net_bridge_port *p, struct sk_buff **pskb) NF_HOOK(PF_BRIDGE, NF_BR_PRE_ROUTING, skb, skb->dev, NULL, br_handle_frame_finish); - return 1; + return NULL; } err: kfree_skb(skb); - return 1; + return NULL; } diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h index 2b73de6c0b47..fab8ce0ce88d 100644 --- a/net/bridge/br_private.h +++ b/net/bridge/br_private.h @@ -182,7 +182,8 @@ extern void br_features_recompute(struct net_bridge *br); /* br_input.c */ extern int br_handle_frame_finish(struct sk_buff *skb); -extern int br_handle_frame(struct net_bridge_port *p, struct sk_buff **pskb); +extern struct sk_buff *br_handle_frame(struct net_bridge_port *p, + struct sk_buff *skb); /* br_ioctl.c */ extern int br_dev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); diff --git a/net/core/dev.c b/net/core/dev.c index d23972f56fc7..7f31d0f88424 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -1687,31 +1687,37 @@ static inline int deliver_skb(struct sk_buff *skb, } #if defined(CONFIG_BRIDGE) || defined (CONFIG_BRIDGE_MODULE) -int (*br_handle_frame_hook)(struct net_bridge_port *p, struct sk_buff **pskb); +/* These hooks defined here for ATM */ struct net_bridge; struct net_bridge_fdb_entry *(*br_fdb_get_hook)(struct net_bridge *br, unsigned char *addr); -void (*br_fdb_put_hook)(struct net_bridge_fdb_entry *ent); +void (*br_fdb_put_hook)(struct net_bridge_fdb_entry *ent) __read_mostly; -static __inline__ int handle_bridge(struct sk_buff **pskb, - struct packet_type **pt_prev, int *ret, - struct net_device *orig_dev) +/* + * If bridge module is loaded call bridging hook. + * returns NULL if packet was consumed. + */ +struct sk_buff *(*br_handle_frame_hook)(struct net_bridge_port *p, + struct sk_buff *skb) __read_mostly; +static inline struct sk_buff *handle_bridge(struct sk_buff *skb, + struct packet_type **pt_prev, int *ret, + struct net_device *orig_dev) { struct net_bridge_port *port; - if ((*pskb)->pkt_type == PACKET_LOOPBACK || - (port = rcu_dereference((*pskb)->dev->br_port)) == NULL) - return 0; + if (skb->pkt_type == PACKET_LOOPBACK || + (port = rcu_dereference(skb->dev->br_port)) == NULL) + return skb; if (*pt_prev) { - *ret = deliver_skb(*pskb, *pt_prev, orig_dev); + *ret = deliver_skb(skb, *pt_prev, orig_dev); *pt_prev = NULL; } - return br_handle_frame_hook(port, pskb); + return br_handle_frame_hook(port, skb); } #else -#define handle_bridge(skb, pt_prev, ret, orig_dev) (0) +#define handle_bridge(skb, pt_prev, ret, orig_dev) (skb) #endif #ifdef CONFIG_NET_CLS_ACT @@ -1818,7 +1824,8 @@ int netif_receive_skb(struct sk_buff *skb) ncls: #endif - if (handle_bridge(&skb, &pt_prev, &ret, orig_dev)) + skb = handle_bridge(skb, &pt_prev, &ret, orig_dev); + if (!skb) goto out; type = skb->protocol; |