svn commit: r281536 - head/sys/netpfil/pf
Kristof Provost
kp at FreeBSD.org
Tue Apr 14 19:07:37 UTC 2015
Author: kp
Date: Tue Apr 14 19:07:37 2015
New Revision: 281536
URL: https://svnweb.freebsd.org/changeset/base/281536
Log:
pf: Fix forwarding detection
If the direction is not PF_OUT we can never be forwarding. Some input packets
have rcvif != ifp (looped back packets), which lead us to ip6_forward() inbound
packets, causing panics.
Equally, we need to ensure that packets were really received and not locally
generated before trying to ip6_forward() them.
Differential Revision: https://reviews.freebsd.org/D2286
Approved by: gnn(mentor)
Modified:
head/sys/netpfil/pf/pf.c
Modified: head/sys/netpfil/pf/pf.c
==============================================================================
--- head/sys/netpfil/pf/pf.c Tue Apr 14 18:57:50 2015 (r281535)
+++ head/sys/netpfil/pf/pf.c Tue Apr 14 19:07:37 2015 (r281536)
@@ -6070,7 +6070,7 @@ pf_test6(int dir, struct ifnet *ifp, str
M_ASSERTPKTHDR(m);
- if (ifp != m->m_pkthdr.rcvif)
+ if (dir == PF_OUT && m->m_pkthdr.rcvif && ifp != m->m_pkthdr.rcvif)
fwdir = PF_FWD;
if (!V_pf_status.running)
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