kernel.git/tools/testing/selftests/net/forwarding/bridge_mdb_max.sh, branch master

selftests: forwarding: bridge_mdb_max: add tests for mdb_n_entries warning

2026-02-17T12:00:14Z

Recently we were able to trigger a warning in the mdb_n_entries counting code. Add tests that exercise different ways which used to trigger that warning. Reviewed-by: Ido Schimmel Signed-off-by: Nikolay Aleksandrov Link: https://patch.msgid.link/20260213070031.1400003-3-nikolay@nvidia.com Signed-off-by: Paolo Abeni

selftests: forwarding: bridge_mdb_max: Fix failing test with old libnet

2023-08-09T21:53:36Z

As explained in commit 8bcfb4ae4d97 ("selftests: forwarding: Fix failing tests with old libnet"), old versions of libnet (used by mausezahn) do not use the "SO_BINDTODEVICE" socket option. For IP unicast packets, this can be solved by prefixing mausezahn invocations with "ip vrf exec". However, IP multicast packets do not perform routing and simply egress the bound device, which does not exist in this case. Fix by specifying the source and destination MAC of the packet which will cause mausezahn to use a packet socket instead of an IP socket. Fixes: 3446dcd7df05 ("selftests: forwarding: bridge_mdb_max: Add a new selftest") Reported-by: Mirsad Todorovac Closes: https://lore.kernel.org/netdev/adc5e40d-d040-a65e-eb26-edf47dac5b02@alu.unizg.hr/ Signed-off-by: Ido Schimmel Tested-by: Mirsad Todorovac Reviewed-by: Hangbin Liu Acked-by: Nikolay Aleksandrov Link: https://lore.kernel.org/r/20230808141503.4060661-17-idosch@nvidia.com Signed-off-by: Jakub Kicinski

selftests: forwarding: bridge_mdb_max: Check iproute2 version

2023-08-09T21:53:34Z

The selftest relies on iproute2 changes present in version 6.3, but the test does not check for it, resulting in errors: # ./bridge_mdb_max.sh INFO: 802.1d tests TEST: cfg4: port: ngroups reporting [FAIL] Number of groups was null, now is null, but 5 expected TEST: ctl4: port: ngroups reporting [FAIL] Number of groups was null, now is null, but 5 expected TEST: cfg6: port: ngroups reporting [FAIL] Number of groups was null, now is null, but 5 expected [...] Fix by skipping the test if iproute2 is too old. Fixes: 3446dcd7df05 ("selftests: forwarding: bridge_mdb_max: Add a new selftest") Reported-by: Mirsad Todorovac Closes: https://lore.kernel.org/netdev/6b04b2ba-2372-6f6b-3ac8-b7cba1cfae83@alu.unizg.hr/ Signed-off-by: Ido Schimmel Reviewed-by: Petr Machata Tested-by: Mirsad Todorovac Reviewed-by: Hangbin Liu Acked-by: Nikolay Aleksandrov Link: https://lore.kernel.org/r/20230808141503.4060661-5-idosch@nvidia.com Signed-off-by: Jakub Kicinski

selftests: forwarding: bridge_mdb_max: Add a new selftest

2023-02-06T08:48:27Z

Add a suite covering mcast_n_groups and mcast_max_groups bridge features. Signed-off-by: Petr Machata Acked-by: Nikolay Aleksandrov Signed-off-by: David S. Miller