bridge: make bridge support netpoll

[safe/jmp/linux-2.6] / net / bridge / br_input.c

diff --git a/net/bridge/br_input.c b/net/bridge/br_input.c
index edfdaef..e7f4c1d 100644 (file)
--- a/net/bridge/br_input.c
+++ b/net/bridge/br_input.c
@@ -11,6 +11,7 @@
  *     2 of the License, or (at your option) any later version.
  */
 
+#include <linux/slab.h>
 #include <linux/kernel.h>
 #include <linux/netdevice.h>
 #include <linux/etherdevice.h>
@@ -23,9 +24,11 @@ const u8 br_group_address[ETH_ALEN] = { 0x01, 0x80, 0xc2, 0x00, 0x00, 0x00 };
 static int br_pass_frame_up(struct sk_buff *skb)
 {
        struct net_device *indev, *brdev = BR_INPUT_SKB_CB(skb)->brdev;
+       struct net_bridge *br = netdev_priv(brdev);
+       struct br_cpu_netstats *brstats = this_cpu_ptr(br->stats);
 
-       brdev->stats.rx_packets++;
-       brdev->stats.rx_bytes += skb->len;
+       brstats->rx_packets++;
+       brstats->rx_bytes += skb->len;
 
        indev = skb->dev;
        skb->dev = brdev;
@@ -41,6 +44,7 @@ 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;
+       struct net_bridge_mdb_entry *mdst;
        struct sk_buff *skb2;
 
        if (!p || p->state == BR_STATE_DISABLED)
@@ -50,6 +54,10 @@ int br_handle_frame_finish(struct sk_buff *skb)
        br = p->br;
        br_fdb_update(br, p, eth_hdr(skb)->h_source);
 
+       if (is_multicast_ether_addr(dest) &&
+           br_multicast_rcv(br, p, skb))
+               goto drop;
+
        if (p->state == BR_STATE_LEARNING)
                goto drop;
 
@@ -64,8 +72,19 @@ int br_handle_frame_finish(struct sk_buff *skb)
        dst = NULL;
 
        if (is_multicast_ether_addr(dest)) {
+               mdst = br_mdb_get(br, skb);
+               if (mdst || BR_INPUT_SKB_CB_MROUTERS_ONLY(skb)) {
+                       if ((mdst && !hlist_unhashed(&mdst->mglist)) ||
+                           br_multicast_is_router(br))
+                               skb2 = skb;
+                       br_multicast_forward(mdst, skb, skb2);
+                       skb = NULL;
+                       if (!skb2)
+                               goto out;
+               } else
+                       skb2 = skb;
+
                br->dev->stats.multicast++;
-               skb2 = skb;
        } else if ((dst = __br_fdb_get(br, dest)) && dst->is_local) {
                skb2 = skb;
                /* Do not forward the packet since it's local. */
@@ -74,7 +93,7 @@ int br_handle_frame_finish(struct sk_buff *skb)
 
        if (skb) {
                if (dst)
-                       br_forward(dst->dst, skb);
+                       br_forward(dst->dst, skb, skb2);
                else
                        br_flood_forward(br, skb, skb2);
        }