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selftests: test_vxlan_fdb_changelink: Add a test for MC remote change

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Changes to MC remote need to be reflected in actual group memberships.
Add a test to verify that it is the case.

Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Nikolay Aleksandrov <razor@blackwall.org>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
This commit is contained in:
Petr Machata 2025-02-14 17:18:24 +01:00 committed by Paolo Abeni
parent 24adf47ea9
commit eae1e92a1d
1 changed files with 76 additions and 0 deletions
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76
tools/testing/selftests/net/test_vxlan_fdb_changelink.sh
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@ -3,6 +3,7 @@
ALL_TESTS="
test_set_remote
test_change_mc_remote
"
source lib.sh
@ -31,6 +32,81 @@ test_set_remote()
log_test 'FDB default-remote handling across "ip link set"'
}
fmt_remote()
{
local addr=$1; shift
if [[ $addr == 224.* ]]; then
echo "group $addr"
else
echo "remote $addr"
fi
}
change_remote()
{
local remote=$1; shift
ip link set dev vx type vxlan $(fmt_remote $remote) dev v1
}
check_membership()
{
local check_vec=("$@")
local memberships
memberships=$(
netstat -n --groups |
sed -n '/^v1\b/p' |
grep -o '[^ ]*$'
)
check_err $? "Couldn't obtain group memberships"
local item
for item in "${check_vec[@]}"; do
eval "local $item"
echo "$memberships" | grep -q "\b$group\b"
check_err_fail $fail $? "$group is_ex reported in IGMP query response"
done
}
test_change_mc_remote()
{
check_command netstat || return
ip_link_add v1 up type veth peer name v2
ip_link_set_up v2
RET=0
ip_link_add vx up type vxlan dstport 4789 \
local 192.0.2.1 $(fmt_remote 224.1.1.1) dev v1 vni 1000
check_membership "group=224.1.1.1 fail=0" \
"group=224.1.1.2 fail=1" \
"group=224.1.1.3 fail=1"
log_test "MC group report after VXLAN creation"
RET=0
change_remote 224.1.1.2
check_membership "group=224.1.1.1 fail=1" \
"group=224.1.1.2 fail=0" \
"group=224.1.1.3 fail=1"
log_test "MC group report after changing VXLAN remote MC->MC"
RET=0
change_remote 192.0.2.2
check_membership "group=224.1.1.1 fail=1" \
"group=224.1.1.2 fail=1" \
"group=224.1.1.3 fail=1"
log_test "MC group report after changing VXLAN remote MC->UC"
}
trap defer_scopes_cleanup EXIT
tests_run