Merge branch 'selftests-mlxsw-convert-to-iproute2-dcb'

Petr Machata says:

====================
selftests: mlxsw: Convert to iproute2 dcb

There is a dedicated tool for configuration of DCB in iproute2. Use it
in the selftests instead of lldpad.

Patches #1-#3 convert three tests. Patch #4 drops the now-unnecessary
lldpad helpers.
====================

Link: https://lore.kernel.org/r/cover.1675096231.git.petrm@nvidia.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

tools/testing/selftests/drivers/net/mlxsw/qos_defprio.sh

@@ -5,18 +5,18 @@
 # prioritized according to the default priority specified at the port.
 # rx_octets_prio_* counters are used to verify the prioritization.
 #
-# +-----------------------+
+# +----------------------------------+
 # | H1                               |
 # |    + $h1                         |
 # |    | 192.0.2.1/28                |
-# +----|------------------+
+# +----|-----------------------------+
 #      |
-# +----|------------------+
+# +----|-----------------------------+
 # | SW |                             |
 # |    + $swp1                       |
 # |      192.0.2.2/28                |
-# |      APP=<prio>,1,0   |
-# +-----------------------+
+# |      dcb app default-prio <prio> |
+# +----------------------------------+
 
 ALL_TESTS="
 	ping_ipv4
@@ -29,42 +29,6 @@ NUM_NETIFS=2
 : ${HIT_TIMEOUT:=1000} # ms
 source $lib_dir/lib.sh
 
-declare -a APP
-
-defprio_install()
-{
-	local dev=$1; shift
-	local prio=$1; shift
-	local app="app=$prio,1,0"
-
-	lldptool -T -i $dev -V APP $app >/dev/null
-	lldpad_app_wait_set $dev
-	APP[$prio]=$app
-}
-
-defprio_uninstall()
-{
-	local dev=$1; shift
-	local prio=$1; shift
-	local app=${APP[$prio]}
-
-	lldptool -T -i $dev -V APP -d $app >/dev/null
-	lldpad_app_wait_del
-	unset APP[$prio]
-}
-
-defprio_flush()
-{
-	local dev=$1; shift
-	local prio
-
-	if ((${#APP[@]})); then
-		lldptool -T -i $dev -V APP -d ${APP[@]} >/dev/null
-	fi
-	lldpad_app_wait_del
-	APP=()
-}
-
 h1_create()
 {
 	simple_if_init $h1 192.0.2.1/28
@@ -83,7 +47,7 @@ switch_create()
 
 switch_destroy()
 {
-	defprio_flush $swp1
+	dcb app flush dev $swp1 default-prio
 	ip addr del dev $swp1 192.0.2.2/28
 	ip link set dev $swp1 down
 }
@@ -124,7 +88,7 @@ __test_defprio()
 
 	RET=0
 
-	defprio_install $swp1 $prio_install
+	dcb app add dev $swp1 default-prio $prio_install
 
 	local t0=$(ethtool_stats_get $swp1 rx_frames_prio_$prio_observe)
 	mausezahn -q $h1 -d 100m -c 10 -t arp reply
@@ -134,7 +98,7 @@ __test_defprio()
 	check_err $? "Default priority $prio_install/$prio_observe: Expected to capture 10 packets, got $((t1 - t0))."
 	log_test "Default priority $prio_install/$prio_observe"
 
-	defprio_uninstall $swp1 $prio_install
+	dcb app del dev $swp1 default-prio $prio_install
 }
 
 test_defprio()
@@ -145,7 +109,7 @@ test_defprio()
 		__test_defprio $prio $prio
 	done
 
-	defprio_install $swp1 3
+	dcb app add dev $swp1 default-prio 3
 	__test_defprio 0 3
 	__test_defprio 1 3
 	__test_defprio 2 3
@@ -153,7 +117,7 @@ test_defprio()
 	__test_defprio 5 5
 	__test_defprio 6 6
 	__test_defprio 7 7
-	defprio_uninstall $swp1 3
+	dcb app del dev $swp1 default-prio 3
 }
 
 trap cleanup EXIT

tools/testing/selftests/drivers/net/mlxsw/qos_dscp_bridge.sh

@@ -20,7 +20,7 @@
 # | SW |                                                                |     |
 # |  +-|----------------------------------------------------------------|-+   |
 # |  | + $swp1                       BR                           $swp2 + |   |
-# |  |   APP=0,5,10 .. 7,5,17                      APP=0,5,20 .. 7,5,27   |   |
+# |  |   dcb dscp-prio 10:0...17:7            dcb dscp-prio 20:0...27:7   |   |
 # |  +--------------------------------------------------------------------+   |
 # +---------------------------------------------------------------------------+
 
@@ -62,16 +62,6 @@ h2_destroy()
 	simple_if_fini $h2 192.0.2.2/28
 }
 
-dscp_map()
-{
-	local base=$1; shift
-	local prio
-
-	for prio in {0..7}; do
-		echo app=$prio,5,$((base + prio))
-	done
-}
-
 switch_create()
 {
 	ip link add name br1 type bridge vlan_filtering 1
@@ -81,17 +71,14 @@ switch_create()
 	ip link set dev $swp2 master br1
 	ip link set dev $swp2 up
 
-	lldptool -T -i $swp1 -V APP $(dscp_map 10) >/dev/null
-	lldptool -T -i $swp2 -V APP $(dscp_map 20) >/dev/null
-	lldpad_app_wait_set $swp1
-	lldpad_app_wait_set $swp2
+	dcb app add dev $swp1 dscp-prio 10:0 11:1 12:2 13:3 14:4 15:5 16:6 17:7
+	dcb app add dev $swp2 dscp-prio 20:0 21:1 22:2 23:3 24:4 25:5 26:6 27:7
 }
 
 switch_destroy()
 {
-	lldptool -T -i $swp2 -V APP -d $(dscp_map 20) >/dev/null
-	lldptool -T -i $swp1 -V APP -d $(dscp_map 10) >/dev/null
-	lldpad_app_wait_del
+	dcb app del dev $swp2 dscp-prio 20:0 21:1 22:2 23:3 24:4 25:5 26:6 27:7
+	dcb app del dev $swp1 dscp-prio 10:0 11:1 12:2 13:3 14:4 15:5 16:6 17:7
 
 	ip link set dev $swp2 down
 	ip link set dev $swp2 nomaster

tools/testing/selftests/drivers/net/mlxsw/qos_dscp_router.sh

@@ -94,16 +94,6 @@ h2_destroy()
 	simple_if_fini $h2 192.0.2.18/28
 }
 
-dscp_map()
-{
-	local base=$1; shift
-	local prio
-
-	for prio in {0..7}; do
-		echo app=$prio,5,$((base + prio))
-	done
-}
-
 switch_create()
 {
 	simple_if_init $swp1 192.0.2.2/28
@@ -112,17 +102,14 @@ switch_create()
 	tc qdisc add dev $swp1 clsact
 	tc qdisc add dev $swp2 clsact
 
-	lldptool -T -i $swp1 -V APP $(dscp_map 0) >/dev/null
-	lldptool -T -i $swp2 -V APP $(dscp_map 0) >/dev/null
-	lldpad_app_wait_set $swp1
-	lldpad_app_wait_set $swp2
+	dcb app add dev $swp1 dscp-prio 0:0 1:1 2:2 3:3 4:4 5:5 6:6 7:7
+	dcb app add dev $swp2 dscp-prio 0:0 1:1 2:2 3:3 4:4 5:5 6:6 7:7
 }
 
 switch_destroy()
 {
-	lldptool -T -i $swp2 -V APP -d $(dscp_map 0) >/dev/null
-	lldptool -T -i $swp1 -V APP -d $(dscp_map 0) >/dev/null
-	lldpad_app_wait_del
+	dcb app del dev $swp2 dscp-prio 0:0 1:1 2:2 3:3 4:4 5:5 6:6 7:7
+	dcb app del dev $swp1 dscp-prio 0:0 1:1 2:2 3:3 4:4 5:5 6:6 7:7
 
 	tc qdisc del dev $swp2 clsact
 	tc qdisc del dev $swp1 clsact
@@ -265,13 +252,11 @@ test_dscp_leftover()
 {
 	echo "Test that last removed DSCP rule is deconfigured correctly"
 
-	lldptool -T -i $swp2 -V APP -d $(dscp_map 0) >/dev/null
-	lldpad_app_wait_del
+	dcb app del dev $swp2 dscp-prio 0:0 1:1 2:2 3:3 4:4 5:5 6:6 7:7
 
 	__test_update 0 zero
 
-	lldptool -T -i $swp2 -V APP $(dscp_map 0) >/dev/null
-	lldpad_app_wait_set $swp2
+	dcb app add dev $swp2 dscp-prio 0:0 1:1 2:2 3:3 4:4 5:5 6:6 7:7
 }
 
 trap cleanup EXIT

tools/testing/selftests/net/forwarding/lib.sh

@@ -524,27 +524,6 @@ cmd_jq()
 	[ ! -z "$output" ]
 }
 
-lldpad_app_wait_set()
-{
-	local dev=$1; shift
-
-	while lldptool -t -i $dev -V APP -c app | grep -Eq "pending|unknown"; do
-		echo "$dev: waiting for lldpad to push pending APP updates"
-		sleep 5
-	done
-}
-
-lldpad_app_wait_del()
-{
-	# Give lldpad a chance to push down the changes. If the device is downed
-	# too soon, the updates will be left pending. However, they will have
-	# been struck off the lldpad's DB already, so we won't be able to tell
-	# they are pending. Then on next test iteration this would cause
-	# weirdness as newly-added APP rules conflict with the old ones,
-	# sometimes getting stuck in an "unknown" state.
-	sleep 5
-}
-
 pre_cleanup()
 {
 	if [ "${PAUSE_ON_CLEANUP}" = "yes" ]; then