]> git.baikalelectronics.ru Git - kernel.git/commit
tcp: tcp_transmit_skb() optimizations
authorEric Dumazet <edumazet@google.com>
Thu, 10 Oct 2013 15:43:00 +0000 (08:43 -0700)
committerDavid S. Miller <davem@davemloft.net>
Fri, 11 Oct 2013 21:48:18 +0000 (17:48 -0400)
commitf408ef48c75525a06e3d372b3978d0dff4b628eb
tree1ced2e6547f027d1417cb408142ce10c4f956754
parentcc8418998a059630167ae125d2ab74de890cc576
tcp: tcp_transmit_skb() optimizations

1) We need to take a timestamp only for skb that should be cloned.

Other skbs are not in write queue and no rtt estimation is done on them.

2) the unlikely() hint is wrong for receivers (they send pure ACK)

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: MF Nowlan <fitz@cs.yale.edu>
Cc: Yuchung Cheng <ycheng@google.com>
Cc: Neal Cardwell <ncardwell@google.com>
Acked-By: Yuchung Cheng <ycheng@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/ipv4/tcp_output.c