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| author |   Eric Dumazet <eric.dumazet@gmail.com> | 2010-06-13 23:02:24 +0000 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2010-06-15 18:12:44 -0700 |
| commit | d27f9b35827ec91d71d3561c127a0a8135fb470d (patch) | |
| tree | a6a9c67628bf3b807d8bf24375fe6c075b25af32 /net | |
| parent | ipv6: syncookies: do not skip ->iif initialization (diff) | |
| download | linux-dev-d27f9b35827ec91d71d3561c127a0a8135fb470d.tar.xz linux-dev-d27f9b35827ec91d71d3561c127a0a8135fb470d.zip | |
ip_frag: Remove some atomic ops
Instead of doing one atomic operation per frag, we can factorize them.
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
| -rw-r--r-- | net/ipv4/ip_fragment.c | 3 | ||||
| -rw-r--r-- | net/ipv6/reassembly.c | 3 |
2 files changed, 2 insertions, 4 deletions
diff --git a/net/ipv4/ip_fragment.c b/net/ipv4/ip_fragment.c index 75347ea70ea0..963c3689d0af 100644 --- a/net/ipv4/ip_fragment.c +++ b/net/ipv4/ip_fragment.c @@ -556,7 +556,6 @@ static int ip_frag_reasm(struct ipq *qp, struct sk_buff *prev, skb_shinfo(head)->frag_list = head->next; skb_push(head, head->data - skb_network_header(head)); - atomic_sub(head->truesize, &qp->q.net->mem); for (fp=head->next; fp; fp = fp->next) { head->data_len += fp->len; @@ -566,8 +565,8 @@ static int ip_frag_reasm(struct ipq *qp, struct sk_buff *prev, else if (head->ip_summed == CHECKSUM_COMPLETE) head->csum = csum_add(head->csum, fp->csum); head->truesize += fp->truesize; - atomic_sub(fp->truesize, &qp->q.net->mem); } + atomic_sub(head->truesize, &qp->q.net->mem); head->next = NULL; head->dev = dev; diff --git a/net/ipv6/reassembly.c b/net/ipv6/reassembly.c index 6d4292ff5854..a630506151c3 100644 --- a/net/ipv6/reassembly.c +++ b/net/ipv6/reassembly.c @@ -524,7 +524,6 @@ static int ip6_frag_reasm(struct frag_queue *fq, struct sk_buff *prev, skb_shinfo(head)->frag_list = head->next; skb_reset_transport_header(head); skb_push(head, head->data - skb_network_header(head)); - atomic_sub(head->truesize, &fq->q.net->mem); for (fp=head->next; fp; fp = fp->next) { head->data_len += fp->len; @@ -534,8 +533,8 @@ static int ip6_frag_reasm(struct frag_queue *fq, struct sk_buff *prev, else if (head->ip_summed == CHECKSUM_COMPLETE) head->csum = csum_add(head->csum, fp->csum); head->truesize += fp->truesize; - atomic_sub(fp->truesize, &fq->q.net->mem); } + atomic_sub(head->truesize, &fq->q.net->mem); head->next = NULL; head->dev = dev; |