From 111856c758d9a06145da446e0db8f71988eebf02 Mon Sep 17 00:00:00 2001 From: Willem de Bruijn Date: Fri, 22 Dec 2017 19:00:18 -0500 Subject: [PATCH] tcp: push full zerocopy packets Skbs that reach MAX_SKB_FRAGS cannot be extended further. Do the same for zerocopy frags as non-zerocopy frags and set the PSH bit. This improves GRO assembly. Suggested-by: Eric Dumazet Signed-off-by: Willem de Bruijn Signed-off-by: David S. Miller --- net/ipv4/tcp.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c index 67d39b79c801..44102484a76f 100644 --- a/net/ipv4/tcp.c +++ b/net/ipv4/tcp.c @@ -1371,8 +1371,10 @@ int tcp_sendmsg_locked(struct sock *sk, struct msghdr *msg, size_t size) pfrag->offset += copy; } else { err = skb_zerocopy_iter_stream(sk, skb, msg, copy, uarg); - if (err == -EMSGSIZE || err == -EEXIST) + if (err == -EMSGSIZE || err == -EEXIST) { + tcp_mark_push(tp, skb); goto new_segment; + } if (err < 0) goto do_error; copy = err; -- 2.45.2