Commit Graph

2 Commits

Author SHA1 Message Date
Florian Westphal
39aa6928d4 xfrm: policy: fix netlink/pf_key policy lookups
Colin Ian King says:
 Static analysis with CoverityScan found a potential issue [..]
 It seems that pointer pol is set to NULL and then a check to see if it
 is non-null is used to set pol to tmp; howeverm this check is always
 going to be false because pol is always NULL.

Fix this and update test script to catch this.  Updated script only:
./xfrm_policy.sh ; echo $?
RTNETLINK answers: No such file or directory
FAIL: ip -net ns3 xfrm policy get src 10.0.1.0/24 dst 10.0.2.0/24 dir out
RTNETLINK answers: No such file or directory
[..]
PASS: policy before exception matches
PASS: ping to .254 bypassed ipsec tunnel
PASS: direct policy matches
PASS: policy matches
1

Fixes: 6be3b0db6d ("xfrm: policy: add inexact policy search tree infrastructure")
Reported-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
2018-11-15 18:09:32 +01:00
Florian Westphal
b69d540da7 selftests: add xfrm policy test script
add a script that adds a ipsec tunnel between two network
namespaces plus following policies:

.0/24 -> ipsec tunnel
.240/28 -> bypass
.253/32 -> ipsec tunnel

Then check that .254 bypasses tunnel (match /28 exception),
and .2 (match /24) and .253 (match direct policy) pass through the
tunnel.

Abuses iptables to check if ping did resolve an ipsec policy or not.

Also adds a bunch of 'block' rules that are not supposed to match.

Signed-off-by: Florian Westphal <fw@strlen.de>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
2018-11-09 11:57:08 +01:00