tree fadf8801f14420d7aac5d0a22812da8773c7f836
parent 4a6e47a460ce55e283063fc3f7391c8ea46bea27
author Jamal Hadi Salim <hadi@cyberus.ca> 1261791022 -0800
committer David S. Miller <davem@davemloft.net> 1261791022 -0800

net: restore ip source validation

when using policy routing and the skb mark:
there are cases where a back path validation requires us
to use a different routing table for src ip validation than
the one used for mapping ingress dst ip.
One such a case is transparent proxying where we pretend to be
the destination system and therefore the local table
is used for incoming packets but possibly a main table would
be used on outbound.
Make the default behavior to allow the above and if users
need to turn on the symmetry via sysctl src_valid_mark

Signed-off-by: Jamal Hadi Salim <hadi@cyberus.ca>
Signed-off-by: David S. Miller <davem@davemloft.net>