UPSTREAM: net: allow per netns sysctl_rmem and sysctl_wmem for protos

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>
(cherry picked from commit a3dcaf17ee54f1d01d22cc2b22cab0b4f60d78cf)

BUG=b:73972012
TEST=Run tcp tx throughput test

Change-Id: Icbeaff9de4e740adb3b045fb44a445bcb9e7d094
Signed-off-by: Grant Grundler <grundler@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/987018
Reviewed-by: Sonny Rao <sonnyrao@chromium.org>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>

0 files changed, 0 insertions, 0 deletions