tree 6c2ef0d59e04b90a9ef673fa34e1c042d22f128e
parent 948a72438d4178d0728c4b0a38836d280b846939
author Paul Moore <paul.moore@hp.com> 1223648190 -0400
committer Paul Moore <paul.moore@hp.com> 1223648190 -0400

selinux: Better local/forward check in selinux_ip_postroute()

It turns out that checking to see if skb->sk is NULL is not a very good
indicator of a forwarded packet as some locally generated packets also have
skb->sk set to NULL.  Fix this by not only checking the skb->sk field but also
the IP[6]CB(skb)->flags field for the IP[6]SKB_FORWARDED flag.  While we are
at it, we are calling selinux_parse_skb() much earlier than we really should
resulting in potentially wasted cycles parsing packets for information we
might no use; so shuffle the code around a bit to fix this.

Signed-off-by: Paul Moore <paul.moore@hp.com>
Acked-by: James Morris <jmorris@namei.org>