Commit cb93471a authored by Eric Dumazet's avatar Eric Dumazet Committed by David S. Miller

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: default avatarEric Dumazet <edumazet@google.com>
Acked-by: default avatarNeal Cardwell <ncardwell@google.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 3ff64259
......@@ -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);
}
......
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