tree acce5506eabdad1365652e148b2a6f65499dbcb8
parent f5239d83418de0f2ada59e4c2eabb7c5f52e0ec9
author Craig Gallek <kraig@google.com> 1455123036 -0500
committer SamarV-121 <samarvispute121@pm.me> 1658757635 +0530
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inet: create IPv6-equivalent inet_hash function

In order to support fast lookups for TCP sockets with SO_REUSEPORT,
the function that adds sockets to the listening hash set needs
to be able to check receive address equality.  Since this equality
check is different for IPv4 and IPv6, we will need two different
socket hashing functions.

This patch adds inet6_hash identical to the existing inet_hash function
and updates the appropriate references.  A following patch will
differentiate the two by passing different comparison functions to
__inet_hash.

Additionally, in order to use the IPv6 address equality function from
inet6_hashtables (which is compiled as a built-in object when IPv6 is
enabled) it also needs to be in a built-in object file as well.  This
moves ipv6_rcv_saddr_equal into inet_hashtables to accomplish this.

Signed-off-by: Craig Gallek <kraig@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Change-Id: I3e53baa0fe0a8220dc3ed79b619796daa0f37827