diff options
| author | Herbert Xu <herbert@gondor.apana.org.au> | 2006-04-19 21:35:00 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2006-04-19 21:35:00 -0700 |
| commit | b60b49ea6a3e1f8dcaf4148dad0daab61ab766d2 (patch) | |
| tree | 83a18b5188d632692da34f9ed8265fcecb4d9f35 /net | |
| parent | d47f3640fe2ac4da8a8e713a549e6eaf23ac2084 (diff) | |
[TCP]: Account skb overhead in tcp_fragment
Make sure that we get the full sizeof(struct sk_buff)
plus the data size accounted for in skb->truesize.
This will create invariants that will allow adding
assertion checks on skb->truesize.
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/ipv4/tcp_output.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c index 44df1db726a3..a28ae593b976 100644 --- a/net/ipv4/tcp_output.c +++ b/net/ipv4/tcp_output.c @@ -533,6 +533,7 @@ int tcp_fragment(struct sock *sk, struct sk_buff *skb, u32 len, unsigned int mss struct tcp_sock *tp = tcp_sk(sk); struct sk_buff *buff; int nsize, old_factor; + int nlen; u16 flags; BUG_ON(len > skb->len); @@ -552,8 +553,10 @@ int tcp_fragment(struct sock *sk, struct sk_buff *skb, u32 len, unsigned int mss if (buff == NULL) return -ENOMEM; /* We'll just try again later. */ - buff->truesize = skb->len - len; - skb->truesize -= buff->truesize; + sk_charge_skb(sk, buff); + nlen = skb->len - len - nsize; + buff->truesize += nlen; + skb->truesize -= nlen; /* Correct the sequence numbers. */ TCP_SKB_CB(buff)->seq = TCP_SKB_CB(skb)->seq + len; @@ -1039,7 +1042,8 @@ static int tso_fragment(struct sock *sk, struct sk_buff *skb, unsigned int len, if (unlikely(buff == NULL)) return -ENOMEM; - buff->truesize = nlen; + sk_charge_skb(sk, buff); + buff->truesize += nlen; skb->truesize -= nlen; /* Correct the sequence numbers. */ |