FM / mlxsw

/usr/src/linux-headers-5.15.0-190/tools/testing/selftests/drivers/net/mlxsw/

/usr/src/linux-headers-5.15.0-190/tools/testing/selftests/drivers/net/mlxsw

Name	Size	Mode	Actions
spectrum/	-	0755	rm
spectrum-2/	-	0755	rm
blackhole_routes.sh	5075	0755	edit dl rm
devlink_trap.sh	1928	0755	edit dl rm
devlink_trap_acl_drops.sh	2458	0755	edit dl rm
devlink_trap_control.sh	18399	0755	edit dl rm
devlink_trap_l2_drops.sh	9966	0755	edit dl rm
devlink_trap_l3_drops.sh	16812	0755	edit dl rm
devlink_trap_l3_exceptions.sh	14098	0755	edit dl rm
devlink_trap_policer.sh	9441	0755	edit dl rm
devlink_trap_tunnel_ipip.sh	6035	0755	edit dl rm
devlink_trap_tunnel_vxlan.sh	8989	0755	edit dl rm
ethtool_lanes.sh	4026	0755	edit dl rm
extack.sh	3471	0755	edit dl rm
fib.sh	5562	0755	edit dl rm
fib_offload.sh	10164	0755	edit dl rm
mirror_gre.sh	4447	0755	edit dl rm
mirror_gre_scale.sh	5782	0644	edit dl rm
mlxsw_lib.sh	362	0644	edit dl rm
one_armed_router.sh	6950	0755	edit dl rm
port_scale.sh	1391	0644	edit dl rm
qos_defprio.sh	2738	0755	edit dl rm
qos_dscp_bridge.sh	4325	0755	edit dl rm
qos_dscp_router.sh	6764	0755	edit dl rm
qos_ets_strict.sh	8810	0755	edit dl rm
qos_headroom.sh	8367	0755	edit dl rm
qos_lib.sh	1918	0644	edit dl rm
qos_mc_aware.sh	9412	0755	edit dl rm
qos_pfc.sh	11700	0755	edit dl rm
q_in_q_veto.sh	7948	0755	edit dl rm
router_scale.sh	2138	0644	edit dl rm
rtnetlink.sh	30604	0755	edit dl rm
sch_ets.sh	2332	0755	edit dl rm
sch_red_core.sh	18014	0644	edit dl rm
sch_red_ets.sh	2476	0755	edit dl rm
sch_red_prio.sh	81	0755	edit dl rm
sch_red_root.sh	1081	0755	edit dl rm
sch_tbf_ets.sh	175	0755	edit dl rm
sch_tbf_prio.sh	176	0755	edit dl rm
sch_tbf_root.sh	176	0755	edit dl rm
sharedbuffer.sh	3912	0755	edit dl rm
tc_action_hw_stats.sh	2293	0755	edit dl rm
tc_flower_scale.sh	2460	0644	edit dl rm
tc_police_occ.sh	2120	0755	edit dl rm
tc_police_scale.sh	1660	0644	edit dl rm
tc_restrictions.sh	11847	0755	edit dl rm
tc_sample.sh	17891	0755	edit dl rm
vxlan.sh	29996	0755	edit dl rm
vxlan_fdb_veto.sh	2955	0755	edit dl rm
vxlan_flooding.sh	8849	0755	edit dl rm

Edit: /usr/src/linux-headers-5.15.0-190/tools/testing/selftests/drivers/net/mlxsw/qos_dscp_router.sh (6764B)

#!/bin/bash
# SPDX-License-Identifier: GPL-2.0

# Test for DSCP prioritization in the router.
#
# With ip_forward_update_priority disabled, the packets are expected to keep
# their DSCP (which in this test uses only values 0..7) intact as they are
# forwarded by the switch. That is verified at $h2. ICMP responses are formed
# with the same DSCP as the requests, and likewise pass through the switch
# intact, which is verified at $h1.
#
# With ip_forward_update_priority enabled, router reprioritizes the packets
# according to the table in reprioritize(). Thus, say, DSCP 7 maps to priority
# 4, which on egress maps back to DSCP 4. The response packet then gets
# reprioritized to 6, getting DSCP 6 on egress.
#
# +----------------------+                             +----------------------+
# | H1                   |                             |                   H2 |
# |    + $h1             |                             |            $h2 +     |
# |    | 192.0.2.1/28    |                             |  192.0.2.18/28 |     |
# +----|-----------------+                             +----------------|-----+
#      |                                                                |
# +----|----------------------------------------------------------------|-----+
# | SW |                                                                |     |
# |    + $swp1                                                    $swp2 +     |
# |      192.0.2.2/28                                     192.0.2.17/28       |
# |      APP=0,5,0 .. 7,5,7                          APP=0,5,0 .. 7,5,7       |
# +---------------------------------------------------------------------------+

ALL_TESTS="
	ping_ipv4
	test_update
	test_no_update
	test_pedit_norewrite
	test_dscp_leftover
"

lib_dir=$(dirname $0)/../../../net/forwarding

NUM_NETIFS=4
source $lib_dir/lib.sh

reprioritize()
{
	local in=$1; shift

# This is based on rt_tos2priority in include/net/route.h. Assuming 1:1
	# mapping between priorities and TOS, it yields a new priority for a
	# packet with ingress priority of $in.
	local -a reprio=(0 0 2 2 6 6 4 4)

echo ${reprio[$in]}
}

zero()
{
    echo 0
}

three()
{
    echo 3
}

h1_create()
{
	simple_if_init $h1 192.0.2.1/28
	tc qdisc add dev $h1 clsact
	dscp_capture_install $h1 0
	ip route add vrf v$h1 192.0.2.16/28 via 192.0.2.2
}

h1_destroy()
{
	ip route del vrf v$h1 192.0.2.16/28 via 192.0.2.2
	dscp_capture_uninstall $h1 0
	tc qdisc del dev $h1 clsact
	simple_if_fini $h1 192.0.2.1/28
}

h2_create()
{
	simple_if_init $h2 192.0.2.18/28
	tc qdisc add dev $h2 clsact
	dscp_capture_install $h2 0
	ip route add vrf v$h2 192.0.2.0/28 via 192.0.2.17
}

h2_destroy()
{
	ip route del vrf v$h2 192.0.2.0/28 via 192.0.2.17
	dscp_capture_uninstall $h2 0
	tc qdisc del dev $h2 clsact
	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
	__simple_if_init $swp2 v$swp1 192.0.2.17/28

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
}

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

tc qdisc del dev $swp2 clsact
	tc qdisc del dev $swp1 clsact

__simple_if_fini $swp2 192.0.2.17/28
	simple_if_fini $swp1 192.0.2.2/28
}

setup_prepare()
{
	h1=${NETIFS[p1]}
	swp1=${NETIFS[p2]}

swp2=${NETIFS[p3]}
	h2=${NETIFS[p4]}

vrf_prepare

sysctl_set net.ipv4.ip_forward_update_priority 1
	h1_create
	h2_create
	switch_create
}

cleanup()
{
	pre_cleanup

switch_destroy
	h2_destroy
	h1_destroy
	sysctl_restore net.ipv4.ip_forward_update_priority

vrf_cleanup
}

ping_ipv4()
{
	ping_test $h1 192.0.2.18
}

dscp_ping_test()
{
	local vrf_name=$1; shift
	local sip=$1; shift
	local dip=$1; shift
	local prio=$1; shift
	local reprio=$1; shift
	local dev1=$1; shift
	local dev2=$1; shift
	local i

local prio2=$($reprio $prio)   # ICMP Request egress prio
	local prio3=$($reprio $prio2)  # ICMP Response egress prio

local dscp=$((prio << 2))     # ICMP Request ingress DSCP
	local dscp2=$((prio2 << 2))   # ICMP Request egress DSCP
	local dscp3=$((prio3 << 2))   # ICMP Response egress DSCP

RET=0

eval "local -A dev1_t0s=($(dscp_fetch_stats $dev1 0))"
	eval "local -A dev2_t0s=($(dscp_fetch_stats $dev2 0))"

local ping_timeout=$((PING_TIMEOUT * 5))
	ip vrf exec $vrf_name \
	   ${PING} -Q $dscp ${sip:+-I $sip} $dip \
		   -c 10 -i 0.5 -w $ping_timeout &> /dev/null

eval "local -A dev1_t1s=($(dscp_fetch_stats $dev1 0))"
	eval "local -A dev2_t1s=($(dscp_fetch_stats $dev2 0))"

for i in {0..7}; do
		local dscpi=$((i << 2))
		local expect2=0
		local expect3=0

if ((i == prio2)); then
			expect2=10
		fi
		if ((i == prio3)); then
			expect3=10
		fi

local delta=$((dev2_t1s[$i] - dev2_t0s[$i]))
		((expect2 == delta))
		check_err $? "DSCP $dscpi@$dev2: Expected to capture $expect2 packets, got $delta."

delta=$((dev1_t1s[$i] - dev1_t0s[$i]))
		((expect3 == delta))
		check_err $? "DSCP $dscpi@$dev1: Expected to capture $expect3 packets, got $delta."
	done

log_test "DSCP rewrite: $dscp-(prio $prio2)-$dscp2-(prio $prio3)-$dscp3"
}

__test_update()
{
	local update=$1; shift
	local reprio=$1; shift
	local prio

sysctl_restore net.ipv4.ip_forward_update_priority
	sysctl_set net.ipv4.ip_forward_update_priority $update

for prio in {0..7}; do
		dscp_ping_test v$h1 192.0.2.1 192.0.2.18 $prio $reprio $h1 $h2
	done
}

test_update()
{
	echo "Test net.ipv4.ip_forward_update_priority=1"
	__test_update 1 reprioritize
}

test_no_update()
{
	echo "Test net.ipv4.ip_forward_update_priority=0"
	__test_update 0 echo
}

# Test that when DSCP is updated in pedit, the DSCP rewrite is turned off.
test_pedit_norewrite()
{
	echo "Test no DSCP rewrite after DSCP is updated by pedit"

tc filter add dev $swp1 ingress handle 101 pref 1 prot ip flower \
	    action pedit ex munge ip dsfield set $((3 << 2)) retain 0xfc \
	    action skbedit priority 3

__test_update 0 three

tc filter del dev $swp1 ingress pref 1
}

# Test that when the last APP rule is removed, the prio->DSCP map is properly
# set to zeroes, and that the last APP rule does not stay active in the ASIC.
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

__test_update 0 zero

lldptool -T -i $swp2 -V APP $(dscp_map 0) >/dev/null
	lldpad_app_wait_set $swp2
}

trap cleanup EXIT

setup_prepare
setup_wait

tests_run

exit $EXIT_STATUS

cmd: