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selftests: forwarding: Add a test for FDB learning 

Send a packet with a specific destination MAC, make sure it was learned
on the ingress port and then aged-out.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ido Schimmel 2018-02-28 12:25:07 +02:00 committed by David S. Miller
parent 73bae6736b
commit d4deb01467
2 changed files with 96 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
tools/testing/selftests/net/forwarding/bridge_vlan_aware.sh
View File

@ -26,7 +26,9 @@ h2_destroy()
switch_create()
{
ip link add dev br0 type bridge vlan_filtering 1 mcast_snooping 0
# 10 Seconds ageing time.
ip link add dev br0 type bridge vlan_filtering 1 ageing_time 1000 \
mcast_snooping 0
ip link set dev $swp1 master br0
ip link set dev $swp2 master br0
@ -79,5 +81,6 @@ setup_wait
ping_test $h1 192.0.2.2
ping6_test $h1 2001:db8:1::2
learning_test "br0" $swp1 $h1 $h2
exit $EXIT_STATUS

92
tools/testing/selftests/net/forwarding/lib.sh
View File

@ -7,6 +7,7 @@
# Can be overridden by the configuration file.
PING=${PING:=ping}
PING6=${PING6:=ping6}
MZ=${MZ:=mausezahn}
WAIT_TIME=${WAIT_TIME:=5}
PAUSE_ON_FAIL=${PAUSE_ON_FAIL:=no}
PAUSE_ON_CLEANUP=${PAUSE_ON_CLEANUP:=no}
@ -34,6 +35,11 @@ if [[ ! -x "$(command -v jq)" ]]; then
exit 0
fi
if [[ ! -x "$(command -v $MZ)" ]]; then
echo "SKIP: $MZ not installed"
exit 0
fi
if [[ ! -v NUM_NETIFS ]]; then
echo "SKIP: importer does not define \"NUM_NETIFS\""
exit 0
@ -250,6 +256,17 @@ master_name_get()
ip -j link show dev $if_name | jq -r '.[]["master"]'
}
bridge_ageing_time_get()
{
local bridge=$1
local ageing_time
# Need to divide by 100 to convert to seconds.
ageing_time=$(ip -j -d link show dev $bridge \
| jq '.[]["linkinfo"]["info_data"]["ageing_time"]')
echo $((ageing_time / 100))
}
##############################################################################
# Tests
@ -280,3 +297,78 @@ ping6_test()
check_err $?
log_test "ping6"
}
learning_test()
{
local bridge=$1
local br_port1=$2 # Connected to `host1_if`.
local host1_if=$3
local host2_if=$4
local mac=de:ad:be:ef:13:37
local ageing_time
RET=0
bridge -j fdb show br $bridge brport $br_port1 \
| jq -e ".[] | select(.mac == \"$mac\")" &> /dev/null
check_fail $? "Found FDB record when should not"
# Disable unknown unicast flooding on `br_port1` to make sure
# packets are only forwarded through the port after a matching
# FDB entry was installed.
bridge link set dev $br_port1 flood off
tc qdisc add dev $host1_if ingress
tc filter add dev $host1_if ingress protocol ip pref 1 handle 101 \
flower dst_mac $mac action drop
$MZ $host2_if -c 1 -p 64 -b $mac -t ip -q
sleep 1
tc -j -s filter show dev $host1_if ingress \
| jq -e ".[] | select(.options.handle == 101) \
| select(.options.actions[0].stats.packets == 1)" &> /dev/null
check_fail $? "Packet reached second host when should not"
$MZ $host1_if -c 1 -p 64 -a $mac -t ip -q
sleep 1
bridge -j fdb show br $bridge brport $br_port1 \
| jq -e ".[] | select(.mac == \"$mac\")" &> /dev/null
check_err $? "Did not find FDB record when should"
$MZ $host2_if -c 1 -p 64 -b $mac -t ip -q
sleep 1
tc -j -s filter show dev $host1_if ingress \
| jq -e ".[] | select(.options.handle == 101) \
| select(.options.actions[0].stats.packets == 1)" &> /dev/null
check_err $? "Packet did not reach second host when should"
# Wait for 10 seconds after the ageing time to make sure FDB
# record was aged-out.
ageing_time=$(bridge_ageing_time_get $bridge)
sleep $((ageing_time + 10))
bridge -j fdb show br $bridge brport $br_port1 \
| jq -e ".[] | select(.mac == \"$mac\")" &> /dev/null
check_fail $? "Found FDB record when should not"
bridge link set dev $br_port1 learning off
$MZ $host1_if -c 1 -p 64 -a $mac -t ip -q
sleep 1
bridge -j fdb show br $bridge brport $br_port1 \
| jq -e ".[] | select(.mac == \"$mac\")" &> /dev/null
check_fail $? "Found FDB record when should not"
bridge link set dev $br_port1 learning on
tc filter del dev $host1_if ingress protocol ip pref 1 handle 101 flower
tc qdisc del dev $host1_if ingress
bridge link set dev $br_port1 flood on
log_test "FDB learning"
}