diff options
| author | Jason A. Donenfeld <Jason@zx2c4.com> | 2021-11-29 13:43:07 -0500 |
|---|---|---|
| committer | Bruno Martins <bgcngm@gmail.com> | 2023-11-06 09:28:24 +0000 |
| commit | ab48cf4bf69f5fc15c819616d83660a05ced7559 (patch) | |
| tree | 3e7d749c1ca90b186bc463a1b9048835a49064c1 | |
| parent | 21fe90df549383827ee780e0bc191d242ce60d85 (diff) | |
netns: actually test for routing loops
We previously removed the restriction on looping to self, and then added
a test to make sure the kernel didn't blow up during a routing loop. The
kernel didn't blow up, thankfully, but on certain architectures where
skb fragmentation is easier, such as ppc64, the skbs weren't actually
being discarded after a few rounds through. But the test wasn't catching
this. So actually test explicitly for massive increases in tx to see if
we have a routing loop. Note that the actual loop problem will need to
be addressed in a different commit.
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Change-Id: I35abdbcc2b8539354ddaa15be2abe824939374ce
| -rwxr-xr-x | tools/testing/selftests/wireguard/netns.sh | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/tools/testing/selftests/wireguard/netns.sh b/tools/testing/selftests/wireguard/netns.sh index d77f4829f1e0..64f108d23ded 100755 --- a/tools/testing/selftests/wireguard/netns.sh +++ b/tools/testing/selftests/wireguard/netns.sh @@ -263,7 +263,11 @@ n0 ping -W 1 -c 1 192.168.241.2 n1 wg set wg0 peer "$pub2" endpoint 192.168.241.2:7 ip2 link del wg0 ip2 link del wg1 -! n0 ping -W 1 -c 10 -f 192.168.241.2 || false # Should not crash kernel +read _ _ tx_bytes_before < <(n0 wg show wg1 transfer) +! n0 ping -W 1 -c 10 -f 192.168.241.2 || false +sleep 1 +read _ _ tx_bytes_after < <(n0 wg show wg1 transfer) +(( tx_bytes_after - tx_bytes_before < 70000 )) ip0 link del wg1 ip1 link del wg0 |