lwn.git/tools/testing/selftests/net/forwarding/ipip_lib.sh, branch master

selftests: net: forwarding: fix IPv6 address leak in cleanup

2026-03-07T01:15:33+00:00

Several forwarding tests (e.g., gre_multipath.sh) initialize both IPv4 and IPv6 addresses using simple_if_init, but only clean up IPv4 in simple_if_fini. This leaves stale IPv6 addresses on the interfaces, which causes subsequent tests to fail when they encounter unexpected address configuration. The issue can be reproduced by running tests in sequence: # run_kselftest.sh -t net/forwarding:ipip_hier_gre.sh # run_kselftest.sh -t net/forwarding:min_max_mtu.sh TAP version 13 1..1 # timeout set to 0 # selftests: net/forwarding: min_max_mtu.sh # TEST: ping [ OK ] # TEST: ping6 [ OK ] # TEST: Test maximum MTU configuration [ OK ] # TEST: Test traffic, packet size is maximum MTU [FAIL] # Ping6, packet size: 65487 succeeded, but should have failed # TEST: Test minimum MTU configuration [ OK ] # TEST: Test traffic, packet size is minimum MTU [ OK ] not ok 1 selftests: net/forwarding: min_max_mtu.sh # exit=1 Fix this by removing the unused IPv6 argument from simple_if_init in tests that don't use IPv6 (gre_multipath.sh, ipip_lib.sh), and by adding the missing IPv6 argument to simple_if_fini in tests that use IPv6 (gre_multipath_nh.sh, gre_multipath_nh_res.sh). Signed-off-by: Aleksei Oladko Reviewed-by: Ido Schimmel Link: https://patch.msgid.link/20260305211000.515301-1-aleksey.oladko@virtuozzo.com Signed-off-by: Jakub Kicinski

selftests: forwarding: ipip_lib: Do not import lib.sh

2024-03-29T01:03:42+00:00

This library is always sourced in the context where lib.sh has already been sourced as well. Therefore drop the explicit sourcing and expect the client to already have done it. This will simplify moving some of the clients to a different directory. Signed-off-by: Petr Machata Link: https://lore.kernel.org/r/a4da5e9cd42a34cbace917a048ca71081719d6ac.1711464583.git.petrm@nvidia.com Signed-off-by: Jakub Kicinski

selftests: forwarding: Add IP tunneling lib

2019-01-20T19:12:58+00:00

Add a library with helper functions, to be used in testing IP-in-IP and GRE tunnels, both in flat and in hierarchical topologies. The topologies used in this library cover the three scenarios of tunnels - a tunel with no bound device, a tunnel with bound device in the same VRF and a tunnel with a bound device in a different VRF. Signed-off-by: Nir Dotan Reviewed-by: Petr Machata Signed-off-by: Ido Schimmel Signed-off-by: David S. Miller