net: allow per netns sysctl_rmem and sysctl_wmem for protos

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As we want to gradually implement per netns sysctl_rmem and sysctl_wmem
on per protocol basis, add two new fields in struct proto,
and two new helpers : sk_get_wmem0() and sk_get_rmem0()

First user will be TCP. Then UDP and SCTP can be easily converted,
while DECNET probably wont get this support.

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

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Eric Dumazet 2017-11-07 00:29:27 -08:00 • committed by David S. Miller

parent 2ea7a679ca

commit a3dcaf17ee

3 changed files with 29 additions and 5 deletions

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22

include/net/sock.h

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2

include/trace/events/sock.h

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