bridge: Allow tail-call on br_pass_frame_up
This patch allows tail-call on the call to br_pass_frame_up in br_handle_frame_finish. This is now possible because of the previous patch to call br_pass_frame_up last. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -20,9 +20,9 @@
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/* Bridge group multicast address 802.1d (pg 51). */
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const u8 br_group_address[ETH_ALEN] = { 0x01, 0x80, 0xc2, 0x00, 0x00, 0x00 };
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static void br_pass_frame_up(struct net_bridge *br, struct sk_buff *skb)
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static int br_pass_frame_up(struct sk_buff *skb)
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{
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struct net_device *indev, *brdev = br->dev;
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struct net_device *indev, *brdev = BR_INPUT_SKB_CB(skb)->brdev;
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brdev->stats.rx_packets++;
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brdev->stats.rx_bytes += skb->len;
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@ -30,7 +30,7 @@ static void br_pass_frame_up(struct net_bridge *br, struct sk_buff *skb)
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indev = skb->dev;
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skb->dev = brdev;
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NF_HOOK(PF_BRIDGE, NF_BR_LOCAL_IN, skb, indev, NULL,
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return NF_HOOK(PF_BRIDGE, NF_BR_LOCAL_IN, skb, indev, NULL,
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netif_receive_skb);
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}
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@ -53,6 +53,8 @@ int br_handle_frame_finish(struct sk_buff *skb)
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if (p->state == BR_STATE_LEARNING)
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goto drop;
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BR_INPUT_SKB_CB(skb)->brdev = br->dev;
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/* The packet skb2 goes to the local host (NULL to skip). */
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skb2 = NULL;
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@ -81,7 +83,7 @@ int br_handle_frame_finish(struct sk_buff *skb)
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}
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if (skb2)
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br_pass_frame_up(br, skb2);
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return br_pass_frame_up(skb2);
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out:
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return 0;
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@ -131,6 +131,12 @@ struct net_bridge
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struct kobject *ifobj;
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};
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struct br_input_skb_cb {
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struct net_device *brdev;
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};
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#define BR_INPUT_SKB_CB(__skb) ((struct br_input_skb_cb *)(__skb)->cb)
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extern struct notifier_block br_device_notifier;
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extern const u8 br_group_address[ETH_ALEN];
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