diff options
| author | Eric Dumazet <edumazet@google.com> | 2014-09-17 03:14:42 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-09-19 16:04:13 -0400 |
| commit | cb93471acc42b71fa3f2e46805020f2b323db64f (patch) | |
| tree | 1d9839b9ee91606a5ac5e761d8fc6be41ef1208d | |
| parent | 3ff64259616225c27f3fae8ac05c77c36bfd0348 (diff) | |
tcp: do not fake tcp headers in tcp_send_rcvq()
Now we no longer rely on having tcp headers for skbs in receive queue,
tcp repair do not need to build fake ones.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Acked-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | net/ipv4/tcp_input.c | 13 |
1 files changed, 4 insertions, 9 deletions
diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c index ea92f23ffaf1..02fb66d4a018 100644 --- a/net/ipv4/tcp_input.c +++ b/net/ipv4/tcp_input.c @@ -4304,24 +4304,19 @@ static int __must_check tcp_queue_rcv(struct sock *sk, struct sk_buff *skb, int int tcp_send_rcvq(struct sock *sk, struct msghdr *msg, size_t size) { - struct sk_buff *skb = NULL; - struct tcphdr *th; + struct sk_buff *skb; bool fragstolen; if (size == 0) return 0; - skb = alloc_skb(size + sizeof(*th), sk->sk_allocation); + skb = alloc_skb(size, sk->sk_allocation); if (!skb) goto err; - if (tcp_try_rmem_schedule(sk, skb, size + sizeof(*th))) + if (tcp_try_rmem_schedule(sk, skb, skb->truesize)) goto err_free; - th = (struct tcphdr *)skb_put(skb, sizeof(*th)); - skb_reset_transport_header(skb); - memset(th, 0, sizeof(*th)); - if (memcpy_fromiovec(skb_put(skb, size), msg->msg_iov, size)) goto err_free; @@ -4329,7 +4324,7 @@ int tcp_send_rcvq(struct sock *sk, struct msghdr *msg, size_t size) TCP_SKB_CB(skb)->end_seq = TCP_SKB_CB(skb)->seq + size; TCP_SKB_CB(skb)->ack_seq = tcp_sk(sk)->snd_una - 1; - if (tcp_queue_rcv(sk, skb, sizeof(*th), &fragstolen)) { + if (tcp_queue_rcv(sk, skb, 0, &fragstolen)) { WARN_ON_ONCE(fragstolen); /* should not happen */ __kfree_skb(skb); } |