diff options
Diffstat (limited to 'net/bridge/br_input.c')
-rw-r--r-- | net/bridge/br_input.c | 25 |
1 files changed, 10 insertions, 15 deletions
diff --git a/net/bridge/br_input.c b/net/bridge/br_input.c index c20c5be6fc22..dd8885def11b 100644 --- a/net/bridge/br_input.c +++ b/net/bridge/br_input.c @@ -131,13 +131,12 @@ static void br_do_proxy_arp(struct sk_buff *skb, struct net_bridge *br, /* note: already called with rcu_read_lock */ int br_handle_frame_finish(struct net *net, struct sock *sk, struct sk_buff *skb) { + bool local_rcv = false, mcast_hit = false, unicast = true; struct net_bridge_port *p = br_port_get_rcu(skb->dev); const unsigned char *dest = eth_hdr(skb)->h_dest; struct net_bridge_fdb_entry *dst = NULL; - bool mcast_hit = false, unicast = true; struct net_bridge_mdb_entry *mdst; struct net_bridge *br; - struct sk_buff *skb2; u16 vid = 0; if (!p || p->state == BR_STATE_DISABLED) @@ -160,17 +159,13 @@ int br_handle_frame_finish(struct net *net, struct sock *sk, struct sk_buff *skb BR_INPUT_SKB_CB(skb)->brdev = br->dev; - /* The packet skb2 goes to the local host (NULL to skip). */ - skb2 = NULL; - - if (br->dev->flags & IFF_PROMISC) - skb2 = skb; + local_rcv = !!(br->dev->flags & IFF_PROMISC); if (IS_ENABLED(CONFIG_INET) && skb->protocol == htons(ETH_P_ARP)) br_do_proxy_arp(skb, br, vid, p); if (is_broadcast_ether_addr(dest)) { - skb2 = skb; + local_rcv = true; unicast = false; } else if (is_multicast_ether_addr(dest)) { mdst = br_mdb_get(br, skb, vid); @@ -178,12 +173,12 @@ int br_handle_frame_finish(struct net *net, struct sock *sk, struct sk_buff *skb br_multicast_querier_exists(br, eth_hdr(skb))) { if ((mdst && mdst->mglist) || br_multicast_is_router(br)) { - skb2 = skb; + local_rcv = true; br->dev->stats.multicast++; } mcast_hit = true; } else { - skb2 = skb; + local_rcv = true; br->dev->stats.multicast++; } unicast = false; @@ -194,16 +189,16 @@ int br_handle_frame_finish(struct net *net, struct sock *sk, struct sk_buff *skb if (dst) { dst->used = jiffies; - br_forward(dst->dst, skb, skb2); + br_forward(dst->dst, skb, local_rcv); } else { if (!mcast_hit) - br_flood_forward(br, skb, skb2, unicast); + br_flood_forward(br, skb, local_rcv, unicast); else - br_multicast_forward(mdst, skb, skb2); + br_multicast_forward(mdst, skb, local_rcv); } - if (skb2) - return br_pass_frame_up(skb2); + if (local_rcv) + return br_pass_frame_up(skb); out: return 0; |