inet: remove some sk_listener dependencies

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listener can be source of false sharing. request sock has some
useful information like : ireq->ir_iif, ireq->ir_num, ireq->ireq_net

This patch does not solve the major problem of having to read
sk->sk_protocol which is sharing a cache line with sk->sk_wmem_alloc.
(This same field is read later in ip_build_and_send_pkt())

One idea would be to move sk_protocol close to sk_family
(using 8 bits instead of 16 for sk_family seems enough)

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

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Eric Dumazet 2015-03-22 10:22:20 -07:00 • committed by David S. Miller

parent 42cb80a235

commit 8b929ab12f

1 changed files with 11 additions and 11 deletions

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22

net/ipv4/inet_connection_sock.c

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