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| author | Herbert Xu <herbert@gondor.apana.org.au> | 2010-02-27 19:41:40 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-02-28 00:48:43 -0800 |
| commit | 68b7c895be336b19f4c38d7cb500132fabba0afd (patch) | |
| tree | 13f2a04c86d22abd1c44e9659e54a13c8f939689 /net | |
| parent | 87557c18ac36241b596984589a0889c5c4bf916c (diff) | |
| download | lwn-68b7c895be336b19f4c38d7cb500132fabba0afd.tar.gz lwn-68b7c895be336b19f4c38d7cb500132fabba0afd.zip | |
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>
Diffstat (limited to 'net')
| -rw-r--r-- | net/bridge/br_input.c | 12 | ||||
| -rw-r--r-- | net/bridge/br_private.h | 6 |
2 files changed, 13 insertions, 5 deletions
diff --git a/net/bridge/br_input.c b/net/bridge/br_input.c index 9589937e1c0a..be5ab8df6661 100644 --- a/net/bridge/br_input.c +++ b/net/bridge/br_input.c @@ -20,9 +20,9 @@ /* Bridge group multicast address 802.1d (pg 51). */ const u8 br_group_address[ETH_ALEN] = { 0x01, 0x80, 0xc2, 0x00, 0x00, 0x00 }; -static void br_pass_frame_up(struct net_bridge *br, struct sk_buff *skb) +static int br_pass_frame_up(struct sk_buff *skb) { - struct net_device *indev, *brdev = br->dev; + struct net_device *indev, *brdev = BR_INPUT_SKB_CB(skb)->brdev; brdev->stats.rx_packets++; brdev->stats.rx_bytes += skb->len; @@ -30,8 +30,8 @@ static void br_pass_frame_up(struct net_bridge *br, struct sk_buff *skb) indev = skb->dev; skb->dev = brdev; - NF_HOOK(PF_BRIDGE, NF_BR_LOCAL_IN, skb, indev, NULL, - netif_receive_skb); + return NF_HOOK(PF_BRIDGE, NF_BR_LOCAL_IN, skb, indev, NULL, + netif_receive_skb); } /* note: already called with rcu_read_lock (preempt_disabled) */ @@ -53,6 +53,8 @@ int br_handle_frame_finish(struct sk_buff *skb) if (p->state == BR_STATE_LEARNING) goto drop; + BR_INPUT_SKB_CB(skb)->brdev = br->dev; + /* The packet skb2 goes to the local host (NULL to skip). */ skb2 = NULL; @@ -81,7 +83,7 @@ int br_handle_frame_finish(struct sk_buff *skb) } if (skb2) - br_pass_frame_up(br, skb2); + return br_pass_frame_up(skb2); out: return 0; diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h index 1f0c4f44b765..16513793156e 100644 --- a/net/bridge/br_private.h +++ b/net/bridge/br_private.h @@ -131,6 +131,12 @@ struct net_bridge struct kobject *ifobj; }; +struct br_input_skb_cb { + struct net_device *brdev; +}; + +#define BR_INPUT_SKB_CB(__skb) ((struct br_input_skb_cb *)(__skb)->cb) + extern struct notifier_block br_device_notifier; extern const u8 br_group_address[ETH_ALEN]; |