[PATCH net-next 2/4] tcp: push full zerocopy packets
flat view
STALE3217d
From: Willem de Bruijn <willemdebruijn.kernel@gmail.com>
Date: 2017-12-23 00:00:26
Subsystem:
networking [general], networking [tcp], the rest · Maintainers:
"David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Neal Cardwell, Linus Torvalds
From: Willem de Bruijn <willemb@google.com> 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 <redacted> Signed-off-by: Willem de Bruijn <willemb@google.com> --- 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;
--
2.15.1.620.gb9897f4670-goog