kernel/linux.git/tools/testing/selftests/net/Makefile, branch v6.18.21

selftests: net: unify the Makefile formats

2025-10-06T20:14:06+00:00

We get a significant number of conflicts between net and net-next because of selftests Makefile changes. People tend to append new test cases at the end of the Makefile when there's no clear sort order. Sort all networking selftests Makefiles, use the following format: VAR_NAME := \ entry1 \ entry2 \ entry3 \ # end of VAR_NAME Some Makefiles are already pretty close to this. Acked-by: Antonio Quartulli Acked-by: Matthieu Baerts (NGI0) Acked-by: Allison Henderson Reviewed-by: Petr Machata Link: https://patch.msgid.link/20251003210127.1021918-1-kuba@kernel.org Signed-off-by: Jakub Kicinski

selftests/net: Test tcp port reuse after unbinding a socket

2025-09-23T08:12:15+00:00

Exercise the scenario described in detail in the cover letter: 1) socket A: connect() from ephemeral port X 2) socket B: explicitly bind() to port X 3) check that port X is now excluded from ephemeral ports 4) close socket B to release the port bind 5) socket C: connect() from ephemeral port X As well as a corner case to test that the connect-bind flag is cleared: 1) connect() from ephemeral port X 2) disconnect the socket with connect(AF_UNSPEC) 3) bind() it explicitly to port X 4) check that port X is now excluded from ephemeral ports Reviewed-by: Kuniyuki Iwashima Signed-off-by: Jakub Sitnicki Link: https://patch.msgid.link/20250917-update-bind-bucket-state-on-unhash-v5-2-57168b661b47@cloudflare.com Signed-off-by: Paolo Abeni

Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

2025-09-12T00:40:13+00:00

Cross-merge networking fixes after downstream PR (net-6.17-rc6). Conflicts: net/netfilter/nft_set_pipapo.c net/netfilter/nft_set_pipapo_avx2.c c4eaca2e1052 ("netfilter: nft_set_pipapo: don't check genbit from packetpath lookups") 84c1da7b38d9 ("netfilter: nft_set_pipapo: use avx2 algorithm for insertions too") Only trivial adjacent changes (in a doc and a Makefile). Signed-off-by: Jakub Kicinski

selftests: net: run groups from fcnal-test in parallel

2025-09-09T22:34:11+00:00

fcnal-test.sh takes almost hour and a half to finish. The tests are already grouped into ipv4, ipv6 and other. Run those groups separately. Reviewed-by: David Ahern Link: https://patch.msgid.link/20250908201021.270681-1-kuba@kernel.org Signed-off-by: Jakub Kicinski

selftests: net: add test for ipv6 fragmentation

2025-09-09T09:43:59+00:00

Add selftest for the IPv6 fragmentation regression which affected several stable kernels. Commit a18dfa9925b9 ("ipv6: save dontfrag in cork") was backported to stable without some prerequisite commits. This caused a regression when sending IPv6 UDP packets by preventing fragmentation and instead returning -1 (EMSGSIZE). Add selftest to check for this issue by attempting to send a packet larger than the interface MTU. The packet will be fragmented on a working kernel, with sendmsg(2) correctly returning the expected number of bytes sent. When the regression is present, sendmsg returns -1 and sets errno to EMSGSIZE. Link: https://lore.kernel.org/stable/aElivdUXqd1OqgMY@karahi.gladserv.com Signed-off-by: Brett A C Sheffield Reviewed-by: Willem de Bruijn Link: https://patch.msgid.link/20250903154925.13481-1-bacs@librecast.net Signed-off-by: Paolo Abeni

selftests: net: add test for destination in broadcast packets

2025-09-09T09:29:58+00:00

Add test to check the broadcast ethernet destination field is set correctly. This test sends a broadcast ping, captures it using tcpdump and ensures that all bits of the 6 octet ethernet destination address are correctly set by examining the output capture file. Co-developed-by: Brett A C Sheffield Signed-off-by: Brett A C Sheffield Signed-off-by: Oscar Maes Link: https://patch.msgid.link/20250902150240.4272-1-oscmaes92@gmail.com Signed-off-by: Paolo Abeni

selftests: net: move netlink-dumps back to progs

2025-09-08T19:57:05+00:00

Commit 9bb88c659673 ("selftests: net: test extacks in netlink dumps") moved netlink-dumps from TEST_GEN_PROGS to YNL_GEN_FILES. But _FILES are not for tests, rather for utilities / helpers. Create YNL_GEN_PROGS and include netlink-dumps there. This makes netlink-dumps part of executed tests, again. Link: https://patch.msgid.link/20250906211351.3192412-2-kuba@kernel.org Signed-off-by: Jakub Kicinski

Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

2025-09-04T20:33:00+00:00

Cross-merge networking fixes after downstream PR (net-6.17-rc5). No conflicts. Adjacent changes: include/net/sock.h c51613fa276f ("net: add sk->sk_drop_counters") 5d6b58c932ec ("net: lockless sock_i_ino()") Signed-off-by: Jakub Kicinski

selftests: net: Add a selftest for VXLAN with FDB nexthop groups

2025-09-02T23:57:00+00:00

Add test cases for VXLAN with FDB nexthop groups, testing both IPv4 and IPv6. Test basic Tx functionality as well as some corner cases. Example output: # ./test_vxlan_nh.sh TEST: VXLAN FDB nexthop: IPv4 basic Tx [ OK ] TEST: VXLAN FDB nexthop: IPv6 basic Tx [ OK ] TEST: VXLAN FDB nexthop: learning [ OK ] TEST: VXLAN FDB nexthop: IPv4 proxy [ OK ] TEST: VXLAN FDB nexthop: IPv6 proxy [ OK ] Signed-off-by: Ido Schimmel Reviewed-by: Nikolay Aleksandrov Link: https://patch.msgid.link/20250901065035.159644-4-idosch@nvidia.com Signed-off-by: Jakub Kicinski

selftests: net: add test for dst hint mechanism with directed broadcast addresses

2025-08-25T23:07:16+00:00

Add a test for ensuring that the dst hint mechanism is used for directed broadcast addresses. This test relies on mausezahn for sending directed broadcast packets. Additionally, a high GRO flush timeout is set to ensure that packets will be received as lists. The test determines if the hint mechanism was used by checking the in_brd statistic using lnstat. Signed-off-by: Oscar Maes Link: https://patch.msgid.link/20250819174642.5148-3-oscmaes92@gmail.com Signed-off-by: Jakub Kicinski