diff options
author | Herbert Xu <herbert@gondor.apana.org.au> | 2009-01-29 14:19:48 (GMT) |
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committer | David S. Miller <davem@davemloft.net> | 2009-01-30 00:33:02 (GMT) |
commit | 5d0d9be8ef456afc6c3fb5f8aad06ef19b704b05 (patch) | |
tree | 9fc987d5c6850800a83465105af43af4ce9c76a4 /net/core/dev.c | |
parent | 7019298a2a5058c4e324494d6c8d0598214c28f4 (diff) | |
download | linux-fsl-qoriq-5d0d9be8ef456afc6c3fb5f8aad06ef19b704b05.tar.xz |
gro: Move common completion code into helpers
Currently VLAN still has a bit of common code handling the aftermath
of GRO that's shared with the common path. This patch moves them
into shared helpers to reduce code duplication.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core/dev.c')
-rw-r--r-- | net/core/dev.c | 76 |
1 files changed, 52 insertions, 24 deletions
diff --git a/net/core/dev.c b/net/core/dev.c index e61b95c..cd23ae1 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -135,6 +135,14 @@ /* This should be increased if a protocol with a bigger head is added. */ #define GRO_MAX_HEAD (MAX_HEADER + 128) +enum { + GRO_MERGED, + GRO_MERGED_FREE, + GRO_HELD, + GRO_NORMAL, + GRO_DROP, +}; + /* * The list of packet types we will receive (as opposed to discard) * and the routines to invoke. @@ -2369,7 +2377,7 @@ int dev_gro_receive(struct napi_struct *napi, struct sk_buff *skb) int count = 0; int same_flow; int mac_len; - int free; + int ret; if (!(skb->dev->features & NETIF_F_GRO)) goto normal; @@ -2412,7 +2420,7 @@ int dev_gro_receive(struct napi_struct *napi, struct sk_buff *skb) goto normal; same_flow = NAPI_GRO_CB(skb)->same_flow; - free = NAPI_GRO_CB(skb)->free; + ret = NAPI_GRO_CB(skb)->free ? GRO_MERGED_FREE : GRO_MERGED; if (pp) { struct sk_buff *nskb = *pp; @@ -2435,12 +2443,13 @@ int dev_gro_receive(struct napi_struct *napi, struct sk_buff *skb) skb_shinfo(skb)->gso_size = skb->len; skb->next = napi->gro_list; napi->gro_list = skb; + ret = GRO_HELD; ok: - return free; + return ret; normal: - return -1; + return GRO_NORMAL; } EXPORT_SYMBOL(dev_gro_receive); @@ -2456,18 +2465,30 @@ static int __napi_gro_receive(struct napi_struct *napi, struct sk_buff *skb) return dev_gro_receive(napi, skb); } -int napi_gro_receive(struct napi_struct *napi, struct sk_buff *skb) +int napi_skb_finish(int ret, struct sk_buff *skb) { - switch (__napi_gro_receive(napi, skb)) { - case -1: + int err = NET_RX_SUCCESS; + + switch (ret) { + case GRO_NORMAL: return netif_receive_skb(skb); - case 1: + case GRO_DROP: + err = NET_RX_DROP; + /* fall through */ + + case GRO_MERGED_FREE: kfree_skb(skb); break; } - return NET_RX_SUCCESS; + return err; +} +EXPORT_SYMBOL(napi_skb_finish); + +int napi_gro_receive(struct napi_struct *napi, struct sk_buff *skb) +{ + return napi_skb_finish(__napi_gro_receive(napi, skb), skb); } EXPORT_SYMBOL(napi_gro_receive); @@ -2520,29 +2541,36 @@ out: } EXPORT_SYMBOL(napi_fraginfo_skb); -int napi_gro_frags(struct napi_struct *napi, struct napi_gro_fraginfo *info) +int napi_frags_finish(struct napi_struct *napi, struct sk_buff *skb, int ret) { - struct sk_buff *skb = napi_fraginfo_skb(napi, info); - int err = NET_RX_DROP; - - if (!skb) - goto out; + int err = NET_RX_SUCCESS; - err = NET_RX_SUCCESS; - - switch (__napi_gro_receive(napi, skb)) { - case -1: + switch (ret) { + case GRO_NORMAL: return netif_receive_skb(skb); - case 0: - goto out; - } + case GRO_DROP: + err = NET_RX_DROP; + /* fall through */ - napi_reuse_skb(napi, skb); + case GRO_MERGED_FREE: + napi_reuse_skb(napi, skb); + break; + } -out: return err; } +EXPORT_SYMBOL(napi_frags_finish); + +int napi_gro_frags(struct napi_struct *napi, struct napi_gro_fraginfo *info) +{ + struct sk_buff *skb = napi_fraginfo_skb(napi, info); + + if (!skb) + return NET_RX_DROP; + + return napi_frags_finish(napi, skb, __napi_gro_receive(napi, skb)); +} EXPORT_SYMBOL(napi_gro_frags); static int process_backlog(struct napi_struct *napi, int quota) |