From: Eric Dumazet <edumazet@google.com>
Date: Wed, 18 Mar 2015 01:32:28 +0000 (-0700)
Subject: inet: add rsk_listener field to struct request_sock
X-Git-Tag: omap-for-v4.2/o2_dc~131^2~220^2~3
X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4e9a578e5b6bdfa8b7fed7a41f28a86a7cffc85f;p=pandora-kernel.git

inet: add rsk_listener field to struct request_sock

Once we'll be able to lookup request sockets in ehash table,
we'll need to get access to listener which created this request.

This avoid doing a lookup to find the listener, which benefits
for a more solid SO_REUSEPORT, and is needed once we no
longer queue request sock into a listener private queue.

Note that 'struct tcp_request_sock'->listener could be reduced
to a single bit, as TFO listener should match req->rsk_listener.
TFO will no longer need to hold a reference on the listener.

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