diff options
| -rw-r--r-- | net/bridge/br_device.c | 4 | ||||
| -rw-r--r-- | net/bridge/br_forward.c | 21 | ||||
| -rw-r--r-- | net/bridge/br_input.c | 48 | ||||
| -rw-r--r-- | net/bridge/br_private.h | 8 |
4 files changed, 31 insertions, 50 deletions
diff --git a/net/bridge/br_device.c b/net/bridge/br_device.c index 0eded176ce9..99292e8e1d0 100644 --- a/net/bridge/br_device.c +++ b/net/bridge/br_device.c @@ -41,11 +41,11 @@ int br_dev_xmit(struct sk_buff *skb, struct net_device *dev) skb_pull(skb, ETH_HLEN); if (dest[0] & 1) - br_flood_deliver(br, skb, 0); + br_flood_deliver(br, skb); else if ((dst = __br_fdb_get(br, dest)) != NULL) br_deliver(dst->dst, skb); else - br_flood_deliver(br, skb, 0); + br_flood_deliver(br, skb); return 0; } diff --git a/net/bridge/br_forward.c b/net/bridge/br_forward.c index ada7f495445..bdd7c35c3c7 100644 --- a/net/bridge/br_forward.c +++ b/net/bridge/br_forward.c @@ -100,24 +100,13 @@ void br_forward(const struct net_bridge_port *to, struct sk_buff *skb) } /* called under bridge lock */ -static void br_flood(struct net_bridge *br, struct sk_buff *skb, int clone, +static void br_flood(struct net_bridge *br, struct sk_buff *skb, void (*__packet_hook)(const struct net_bridge_port *p, struct sk_buff *skb)) { struct net_bridge_port *p; struct net_bridge_port *prev; - if (clone) { - struct sk_buff *skb2; - - if ((skb2 = skb_clone(skb, GFP_ATOMIC)) == NULL) { - br->statistics.tx_dropped++; - return; - } - - skb = skb2; - } - prev = NULL; list_for_each_entry_rcu(p, &br->port_list, list) { @@ -148,13 +137,13 @@ static void br_flood(struct net_bridge *br, struct sk_buff *skb, int clone, /* called with rcu_read_lock */ -void br_flood_deliver(struct net_bridge *br, struct sk_buff *skb, int clone) +void br_flood_deliver(struct net_bridge *br, struct sk_buff *skb) { - br_flood(br, skb, clone, __br_deliver); + br_flood(br, skb, __br_deliver); } /* called under bridge lock */ -void br_flood_forward(struct net_bridge *br, struct sk_buff *skb, int clone) +void br_flood_forward(struct net_bridge *br, struct sk_buff *skb) { - br_flood(br, skb, clone, __br_forward); + br_flood(br, skb, __br_forward); } diff --git a/net/bridge/br_input.c b/net/bridge/br_input.c index 6f468fc3357..3a8a015c92e 100644 --- a/net/bridge/br_input.c +++ b/net/bridge/br_input.c @@ -43,7 +43,7 @@ int br_handle_frame_finish(struct sk_buff *skb) struct net_bridge_port *p = rcu_dereference(skb->dev->br_port); struct net_bridge *br; struct net_bridge_fdb_entry *dst; - int passedup = 0; + struct sk_buff *skb2; if (!p || p->state == BR_STATE_DISABLED) goto drop; @@ -55,39 +55,35 @@ int br_handle_frame_finish(struct sk_buff *skb) if (p->state == BR_STATE_LEARNING) goto drop; - if (br->dev->flags & IFF_PROMISC) { - struct sk_buff *skb2; + /* The packet skb2 goes to the local host (NULL to skip). */ + skb2 = NULL; - skb2 = skb_clone(skb, GFP_ATOMIC); - if (skb2 != NULL) { - passedup = 1; - br_pass_frame_up(br, skb2); - } - } + if (br->dev->flags & IFF_PROMISC) + skb2 = skb; + + dst = NULL; if (is_multicast_ether_addr(dest)) { br->statistics.multicast++; - br_flood_forward(br, skb, !passedup); - if (!passedup) - br_pass_frame_up(br, skb); - goto out; + skb2 = skb; + } else if ((dst = __br_fdb_get(br, dest)) && dst->is_local) { + skb2 = skb; + /* Do not forward the packet since it's local. */ + skb = NULL; } - dst = __br_fdb_get(br, dest); - if (dst != NULL && dst->is_local) { - if (!passedup) - br_pass_frame_up(br, skb); - else - kfree_skb(skb); - goto out; - } + if (skb2 == skb) + skb2 = skb_clone(skb, GFP_ATOMIC); - if (dst != NULL) { - br_forward(dst->dst, skb); - goto out; - } + if (skb2) + br_pass_frame_up(br, skb2); - br_flood_forward(br, skb, 0); + if (skb) { + if (dst) + br_forward(dst->dst, skb); + else + br_flood_forward(br, skb); + } out: return 0; diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h index 21bf3a9a03f..e6dc6f52990 100644 --- a/net/bridge/br_private.h +++ b/net/bridge/br_private.h @@ -170,12 +170,8 @@ 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); extern int br_forward_finish(struct sk_buff *skb); -extern void br_flood_deliver(struct net_bridge *br, - struct sk_buff *skb, - int clone); -extern void br_flood_forward(struct net_bridge *br, - struct sk_buff *skb, - int clone); +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); /* br_if.c */ extern void br_port_carrier_check(struct net_bridge_port *p); |