Matthieu Baerts 485f6be254 selftests: mptcp: join: skip check if MIB counter not supported ... commit 47867f0a7e upstream. Selftests are supposed to run on any kernels, including the old ones not supporting all MPTCP features. One of them is the MPTCP MIB counters introduced in commit fc518953bc ("mptcp: add and use MIB counter infrastructure") and more later. The MPTCP Join selftest heavily relies on these counters. If a counter is not supported by the kernel, it is not displayed when using 'nstat -z'. We can then detect that and skip the verification. A new helper (get_counter()) has been added to do the required checks and return an error if the counter is not available. Note that if we expect to have these features available and if SELFTESTS_MPTCP_LIB_EXPECT_ALL_FEATURES env var is set to 1, the tests will be marked as failed instead of skipped. This new helper also makes sure we get the exact counter we want to avoid issues we had in the past, e.g. with MPTcpExtRmAddr and MPTcpExtRmAddrDrop sharing the same prefix. While at it, we uniform the way we fetch a MIB counter. Note for the backports: we rarely change these modified blocks so if there is are conflicts, it is very likely because a counter is not used in the older kernels and we don't need that chunk. Link: https://github.com/multipath-tcp/mptcp_net-next/issues/368 Fixes: b08fbf2410 ("selftests: add test-cases for MPTCP MP_JOIN") Cc: stable@vger.kernel.org Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net> Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2023-06-28 10:29:41 +02:00
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accounting
arch	tools/x86/kcpuid: Fix avx512bw and avx512lvl fields in Fn00000007	2023-05-11 23:00:20 +09:00
bootconfig	bootconfig: Fix testcase to increase max node	2023-03-30 12:47:47 +02:00
bpf	bpftool: Fix bug for long instructions in program CFG dumps	2023-05-11 23:00:27 +09:00
build	tools build: Add feature test for init_disassemble_info API changes	2023-03-17 08:49:03 +01:00
cgroup
debugging
edid
firewire
firmware
gpio	tools: gpio: fix debounce_period_us output of lsgpio	2023-06-21 15:59:12 +02:00
hv
iio	tools/iio/iio_utils:fix memory leak	2023-03-11 13:57:34 +01:00
include	Bonding: add arp_missed_max option	2023-06-05 09:21:19 +02:00
io_uring
kvm/kvm_stat	tools/kvm_stat: fix display of error when multiple processes are found	2022-08-11 13:07:51 +02:00
laptop
leds
lib	libbpf: Fix single-line struct definition output in btf_dump	2023-04-20 12:13:54 +02:00
memory-model
objtool	Revert "objtool: Support addition to set CFA base"	2023-05-11 23:00:35 +09:00
pci
pcmcia
perf	perf stat: Separate bperf from bpf_profiler	2023-05-17 11:50:21 +02:00
power	cpupower: Make TSC read per CPU for Mperf monitor	2023-05-24 17:36:49 +01:00
rcu
scripts
spi
testing	selftests: mptcp: join: skip check if MIB counter not supported	2023-06-28 10:29:41 +02:00
thermal/tmon	tools/thermal: Fix possible path truncations	2022-08-17 14:24:15 +02:00
time
tracing
usb
virtio	tools/virtio: fix the vringh test for virtio ring changes	2023-02-22 12:57:01 +01:00
vm	tools/vm/slabinfo-gnuplot: use "grep -E" instead of "egrep"	2022-12-08 11:28:42 +01:00
wmi
Makefile