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selftests: bridge_mdb: Add a test for MDB flush on snooping disable

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Check that non-permanent MDB entries are removed as IGMP / MLD snooping is
disabled.

Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Acked-by: Nikolay Aleksandrov <razor@blackwall.org>
Link: https://patch.msgid.link/9420dfbcf26c8e1134d31244e9e7d6a49d677a69.1761228273.git.petrm@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Petr Machata 2025-10-23 16:45:38 +02:00 committed by Jakub Kicinski
parent 68800bbf58
commit d10920607f
1 changed files with 98 additions and 2 deletions
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100
tools/testing/selftests/net/forwarding/bridge_mdb.sh
View File

@ -28,6 +28,7 @@ ALL_TESTS="
cfg_test
fwd_test
ctrl_test
disable_test
"
NUM_NETIFS=4
@ -64,7 +65,10 @@ h2_destroy()
switch_create()
{
ip link add name br0 type bridge vlan_filtering 1 vlan_default_pvid 0 \
local vlan_filtering=$1; shift
ip link add name br0 type bridge \
vlan_filtering "$vlan_filtering" vlan_default_pvid 0 \
mcast_snooping 1 mcast_igmp_version 3 mcast_mld_version 2
bridge vlan add vid 10 dev br0 self
bridge vlan add vid 20 dev br0 self
@ -118,7 +122,7 @@ setup_prepare()
h1_create
h2_create
switch_create
switch_create 1
}
cleanup()
@ -1357,6 +1361,98 @@ ctrl_test()
ctrl_mldv2_is_in_test
}
check_group()
{
local group=$1; shift
local vid=$1; shift
local should_fail=$1; shift
local when=$1; shift
local -a vidkws
if ((vid)); then
vidkws=(vid "$vid")
fi
bridge mdb get dev br0 grp "$group" "${vidkws[@]}" 2>/dev/null |
grep -q "port $swp1"
check_err_fail "$should_fail" $? "$group seen $when snooping disable:"
}
__disable_test()
{
local vid=$1; shift
local what=$1; shift
local -a vidkws
if ((vid)); then
vidkws=(vid "$vid")
fi
RET=0
bridge mdb add dev br0 port "$swp1" grp ff0e::1 permanent \
"${vidkws[@]}" filter_mode include source_list 2001:db8:1::1
bridge mdb add dev br0 port "$swp1" grp ff0e::2 permanent \
"${vidkws[@]}" filter_mode exclude
bridge mdb add dev br0 port "$swp1" grp ff0e::3 \
"${vidkws[@]}" filter_mode include source_list 2001:db8:1::2
bridge mdb add dev br0 port "$swp1" grp ff0e::4 \
"${vidkws[@]}" filter_mode exclude
bridge mdb add dev br0 port "$swp1" grp 239.1.1.1 permanent \
"${vidkws[@]}" filter_mode include source_list 192.0.2.1
bridge mdb add dev br0 port "$swp1" grp 239.1.1.2 permanent \
"${vidkws[@]}" filter_mode exclude
bridge mdb add dev br0 port "$swp1" grp 239.1.1.3 \
"${vidkws[@]}" filter_mode include source_list 192.0.2.2
bridge mdb add dev br0 port "$swp1" grp 239.1.1.4 \
"${vidkws[@]}" filter_mode exclude
check_group ff0e::1 "$vid" 0 "before"
check_group ff0e::2 "$vid" 0 "before"
check_group ff0e::3 "$vid" 0 "before"
check_group ff0e::4 "$vid" 0 "before"
check_group 239.1.1.1 "$vid" 0 "before"
check_group 239.1.1.2 "$vid" 0 "before"
check_group 239.1.1.3 "$vid" 0 "before"
check_group 239.1.1.4 "$vid" 0 "before"
ip link set dev br0 type bridge mcast_snooping 0
check_group ff0e::1 "$vid" 0 "after"
check_group ff0e::2 "$vid" 0 "after"
check_group ff0e::3 "$vid" 1 "after"
check_group ff0e::4 "$vid" 1 "after"
check_group 239.1.1.1 "$vid" 0 "after"
check_group 239.1.1.2 "$vid" 0 "after"
check_group 239.1.1.3 "$vid" 1 "after"
check_group 239.1.1.4 "$vid" 1 "after"
log_test "$what: Flush after disable"
ip link set dev br0 type bridge mcast_snooping 1
sleep 10
}
disable_test()
{
__disable_test 10 802.1q
switch_destroy
switch_create 0
setup_wait
__disable_test 0 802.1d
switch_destroy
switch_create 1
setup_wait
}
if ! bridge mdb help 2>&1 | grep -q "flush"; then
echo "SKIP: iproute2 too old, missing bridge mdb flush support"
exit $ksft_skip