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| author | Paolo Abeni <pabeni@redhat.com> | 2023-02-07 21:44:58 +0300 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2023-02-10 04:45:55 +0300 |
| commit | c12e0d5f267d7eb45a2f8eaa9fd44eaa2871a95e (patch) | |
| tree | a408253f02823f66dc55b29f1ba5b085ee7b1666 /tools/testing/selftests/net/rps_default_mask.sh | |
| parent | 605cfa1b1090b5d9e227d8a8f7d08fdd04f07724 (diff) | |
| download | linux-c12e0d5f267d7eb45a2f8eaa9fd44eaa2871a95e.tar.xz | |
self-tests: introduce self-tests for RPS default mask
Ensure that RPS default mask changes take place on
all newly created netns/devices and don't affect
existing ones.
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'tools/testing/selftests/net/rps_default_mask.sh')
| -rwxr-xr-x | tools/testing/selftests/net/rps_default_mask.sh | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/tools/testing/selftests/net/rps_default_mask.sh b/tools/testing/selftests/net/rps_default_mask.sh new file mode 100755 index 000000000000..c81c0ac7ddfe --- /dev/null +++ b/tools/testing/selftests/net/rps_default_mask.sh @@ -0,0 +1,57 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 + +readonly ksft_skip=4 +readonly cpus=$(nproc) +ret=0 + +[ $cpus -gt 2 ] || exit $ksft_skip + +readonly INITIAL_RPS_DEFAULT_MASK=$(cat /proc/sys/net/core/rps_default_mask) +readonly NETNS="ns-$(mktemp -u XXXXXX)" + +setup() { + ip netns add "${NETNS}" + ip -netns "${NETNS}" link set lo up +} + +cleanup() { + echo $INITIAL_RPS_DEFAULT_MASK > /proc/sys/net/core/rps_default_mask + ip netns del $NETNS +} + +chk_rps() { + local rps_mask expected_rps_mask=$3 + local dev_name=$2 + local msg=$1 + + rps_mask=$(ip netns exec $NETNS cat /sys/class/net/$dev_name/queues/rx-0/rps_cpus) + printf "%-60s" "$msg" + if [ $rps_mask -eq $expected_rps_mask ]; then + echo "[ ok ]" + else + echo "[fail] expected $expected_rps_mask found $rps_mask" + ret=1 + fi +} + +trap cleanup EXIT + +echo 0 > /proc/sys/net/core/rps_default_mask +setup +chk_rps "empty rps_default_mask" lo 0 +cleanup + +echo 1 > /proc/sys/net/core/rps_default_mask +setup +chk_rps "non zero rps_default_mask" lo 1 + +echo 3 > /proc/sys/net/core/rps_default_mask +chk_rps "changing rps_default_mask dont affect existing netns" lo 1 + +ip -n $NETNS link add type veth +ip -n $NETNS link set dev veth0 up +ip -n $NETNS link set dev veth1 up +chk_rps "changing rps_default_mask affect newly created devices" veth0 3 +chk_rps "changing rps_default_mask affect newly created devices[II]" veth1 3 +exit $ret |