diff mbox series

[net-next,2/4] tcp: push full zerocopy packets

Message ID 20171223000020.55509-3-willemdebruijn.kernel@gmail.com
State Accepted, archived
Delegated to: David Miller
Headers show
Series zerocopy refinements | expand

Commit Message

Willem de Bruijn Dec. 23, 2017, midnight UTC 
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 <edumazet@google.com>
Signed-off-by: Willem de Bruijn <willemb@google.com>
---
 net/ipv4/tcp.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)
diff mbox series

Patch

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;