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Matthieu Baerts (NGI0) 131af3df59 selftests: mptcp: join: fix local endp not being tracked 
commit c5d5ecf21f upstream.

When running this mptcp_join.sh selftest on older kernel versions not
supporting local endpoints tracking, this test fails because 3 MP_JOIN
ACKs have been received, while only 2 were expected.

It is not clear why only 2 MP_JOIN ACKs were expected on old kernel
versions, while 3 MP_JOIN SYN and SYN+ACK were expected. When testing on
the v5.15.197 kernel, 3 MP_JOIN ACKs are seen, which is also what is
expected in the selftests included in this kernel version, see commit
f4480eaad4 ("selftests: mptcp: add missing join check").

Switch the expected MP_JOIN ACKs to 3. While at it, move this
chk_join_nr helper out of the special condition for older kernel
versions as it is now the same as with more recent ones. Also, invert
the condition to be more logical: what's expected on newer kernel
versions having such helper first.

Fixes: d4c81bbb86 ("selftests: mptcp: join: support local endpoint being tracked or not")
Cc: stable@vger.kernel.org
Reviewed-by: Mat Martineau <martineau@kernel.org>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Link: https://patch.msgid.link/20260127-net-mptcp-dup-nl-events-v1-5-7f71e1bc4feb@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
History 2026-02-06 16:57:40 +01:00
..
crypto/chacha20-s390 crypto: lib/chacha - strongly type the ChaCha state 2025-05-12 13:32:53 +08:00
cxl Merge branch 'for-6.18/cxl-delay-dport' into cxl-for-next 2025-09-18 14:34:51 -07:00
fault-injection failcmd: make failcmd.sh executable 2024-09-01 20:43:32 -07:00
ktest ktest.pl: Fix uninitialized var in config-bisect.pl 2026-01-02 12:57:09 +01:00
kunit kunit: qemu_configs: Add MIPS configurations 2025-09-15 10:30:07 -06:00
memblock memblock: add MEMBLOCK_RSRV_KERN flag 2025-05-12 23:50:38 -07:00
nvdimm tools/testing/nvdimm: Use per-DIMM device handle 2026-01-02 12:57:18 +01:00
radix-tree idr: fix idr_alloc() returning an ID out of range 2026-01-08 10:17:10 +01:00
rbtree lib/interval_tree: add test case for span iteration 2025-03-17 12:17:01 -07:00
scatterlist mm: remove nth_page() 2025-09-21 14:22:10 -07:00
selftests selftests: mptcp: join: fix local endp not being tracked 2026-02-06 16:57:40 +01:00
shared Summary of significant series in this pull request: 2025-10-02 18:18:33 -07:00
vma Summary of significant series in this pull request: 2025-10-02 18:18:33 -07:00
vsock vsock/test: fix seqpacket message bounds test 2026-01-30 10:32:21 +01:00