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@xxxxxxxxxx>
Reviewed-by: Ido Schimmel <idosch@xxxxxxxxxx>
---
Notes:
CC: Simon Horman <horms@xxxxxxxxxx>
CC: Shuah Khan <shuah@xxxxxxxxxx>
CC: linux-kselftest@xxxxxxxxxxxxxxx
.../net/test_vxlan_fdb_changelink.sh | 76 +++++++++++++++++++
1 file changed, 76 insertions(+)
diff --git a/tools/testing/selftests/net/test_vxlan_fdb_changelink.sh b/tools/testing/selftests/net/test_vxlan_fdb_changelink.sh
index 6f2bca4b346c..062f957950af 100755
--- a/tools/testing/selftests/net/test_vxlan_fdb_changelink.sh
+++ b/tools/testing/selftests/net/test_vxlan_fdb_changelink.sh
@@ -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
--
2.47.0
