tcp: fill shinfo->gso_size at last moment

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In commit cd7d8498c9 ("tcp: change tcp_skb_pcount() location") we stored
gso_segs in a temporary cache hot location.

This patch does the same for gso_size.

This allows to save 2 cache line misses in tcp xmit path for
the last packet that is considered but not sent because of
various conditions (cwnd, tso defer, receiver window, TSQ...)

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Eric Dumazet 2015-06-11 09:15:18 -07:00 • committed by David S. Miller

parent 5bbb432c89

commit f69ad292cf

3 changed files with 16 additions and 17 deletions

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13

include/net/tcp.h

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