tree b68c8a9b5148687c7bce7c6a5ab14e26a5c47050
parent 74b20582ac389ee9f18a6fcc0eef244658ce8de0
author David Ahern <dsa@cumulusnetworks.com> 1462904391 -0700
committer David S. Miller <davem@davemloft.net> 1463009500 -0400

net: original ingress device index in PKTINFO

Applications such as OSPF and BFD need the original ingress device not
the VRF device; the latter can be derived from the former. To that end
add the skb_iif to inet_skb_parm and set it in ipv4 code after clearing
the skb control buffer similar to IPv6. From there the pktinfo can just
pull it from cb with the PKTINFO_SKB_CB cast.

The previous patch moving the skb->dev change to L3 means nothing else
is needed for IPv6; it just works.

Signed-off-by: David Ahern <dsa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>