diff mbox series

[v2,net-next,2/2] self-tests: more rps self tests

Message ID 20cbe64121272df3bdf2a7290c8612ae6af84673.1676635317.git.pabeni@redhat.com (mailing list archive)
State Accepted
Delegated to: Netdev Maintainers
Headers show
Series net: default_rps_mask follow-up | expand

Checks

Context Check Description
netdev/tree_selection success Clearly marked for net-next, async
netdev/fixes_present success Fixes tag not required for -next series
netdev/subject_prefix success Link
netdev/cover_letter success Series has a cover letter
netdev/patch_count success Link
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 0 this patch: 0
netdev/cc_maintainers warning 1 maintainers not CCed: linux-kselftest@vger.kernel.org
netdev/build_clang success Errors and warnings before: 0 this patch: 0
netdev/module_param success Was 0 now: 0
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/check_selftest success net selftest script(s) already in Makefile
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 0 this patch: 0
netdev/checkpatch warning WARNING: line length of 105 exceeds 80 columns WARNING: line length of 85 exceeds 80 columns WARNING: line length of 89 exceeds 80 columns WARNING: line length of 90 exceeds 80 columns WARNING: line length of 96 exceeds 80 columns
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0

Commit Message

Paolo Abeni Feb. 17, 2023, 12:28 p.m. UTC 
Explicitly check for child netns and main ns independency

Signed-off-by: Paolo Abeni <pabeni@redhat.com>
---
 .../testing/selftests/net/rps_default_mask.sh | 41 +++++++++++++------
 1 file changed, 29 insertions(+), 12 deletions(-)
diff mbox series

Patch

diff --git a/tools/testing/selftests/net/rps_default_mask.sh b/tools/testing/selftests/net/rps_default_mask.sh
index c81c0ac7ddfe..0fd0d2db3abc 100755
--- a/tools/testing/selftests/net/rps_default_mask.sh
+++ b/tools/testing/selftests/net/rps_default_mask.sh
@@ -8,7 +8,9 @@  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)"
+readonly TAG="$(mktemp -u XXXXXX)"
+readonly VETH="veth${TAG}"
+readonly NETNS="ns-${TAG}"
 
 setup() {
 	ip netns add "${NETNS}"
@@ -21,11 +23,15 @@  cleanup() {
 }
 
 chk_rps() {
-	local rps_mask expected_rps_mask=$3
-	local dev_name=$2
+	local rps_mask expected_rps_mask=$4
+	local dev_name=$3
+	local netns=$2
+	local cmd="cat"
 	local msg=$1
 
-	rps_mask=$(ip netns exec $NETNS cat /sys/class/net/$dev_name/queues/rx-0/rps_cpus)
+	[ -n "$netns" ] && cmd="ip netns exec $netns $cmd"
+
+	rps_mask=$($cmd /sys/class/net/$dev_name/queues/rx-0/rps_cpus)
 	printf "%-60s" "$msg"
 	if [ $rps_mask -eq $expected_rps_mask ]; then
 		echo "[ ok ]"
@@ -39,19 +45,30 @@  trap cleanup EXIT
 
 echo 0 > /proc/sys/net/core/rps_default_mask
 setup
-chk_rps "empty rps_default_mask" lo 0
+chk_rps "empty rps_default_mask" $NETNS lo 0
 cleanup
 
 echo 1 > /proc/sys/net/core/rps_default_mask
 setup
-chk_rps "non zero rps_default_mask" lo 1
+chk_rps "changing rps_default_mask dont affect existing devices" "" lo $INITIAL_RPS_DEFAULT_MASK
 
 echo 3 > /proc/sys/net/core/rps_default_mask
-chk_rps "changing rps_default_mask dont affect existing netns" lo 1
+chk_rps "changing rps_default_mask dont affect existing netns" $NETNS lo 0
+
+ip link add name $VETH type veth peer netns $NETNS name $VETH
+ip link set dev $VETH up
+ip -n $NETNS link set dev $VETH up
+chk_rps "changing rps_default_mask affect newly created devices" "" $VETH 3
+chk_rps "changing rps_default_mask don't affect newly child netns[II]" $NETNS $VETH 0
+ip netns del $NETNS
+
+setup
+chk_rps "rps_default_mask is 0 by default in child netns" "$NETNS" lo 0
+
+ip netns exec $NETNS sysctl -qw net.core.rps_default_mask=1
+ip link add name $VETH type veth peer netns $NETNS name $VETH
+chk_rps "changing rps_default_mask in child ns don't affect the main one" "" lo $INITIAL_RPS_DEFAULT_MASK
+chk_rps "changing rps_default_mask in child ns affects new childns devices" $NETNS $VETH 1
+chk_rps "changing rps_default_mask in child ns don't affect existing devices" $NETNS lo 0
 
-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