FM / mlxsw

/usr/src/linux-headers-5.15.0-181/tools/testing/selftests/drivers/net/mlxsw/

/usr/src/linux-headers-5.15.0-181/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-5.15.0-181/tools/testing/selftests/drivers/net/mlxsw/qos_headroom.sh (8367B)

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

ALL_TESTS="
	test_defaults
	test_dcb_ets
	test_mtu
	test_pfc
	test_int_buf
	test_tc_priomap
	test_tc_mtu
	test_tc_sizes
	test_tc_int_buf
"

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

NUM_NETIFS=0
source $lib_dir/lib.sh
source $lib_dir/devlink_lib.sh
source qos_lib.sh

swp=$NETIF_NO_CABLE

cleanup()
{
	pre_cleanup
}

get_prio_pg()
{
	# Produces a string of numbers "<B0> <B1> ... <B7> ", where BX is number
	# of buffer that priority X is mapped to.
	dcb -j buffer show dev $swp |
		jq -r '[.prio_buffer | .[] | tostring + " "] | add'
}

get_prio_pfc()
{
	# Produces a string of numbers "<P0> <P1> ... <P7> ", where PX denotes
	# whether priority X has PFC enabled (the value is 1) or disabled (0).
	dcb -j pfc show dev $swp |
		jq -r '[.prio_pfc | .[] | if . then "1 " else "0 " end] | add'
}

get_prio_tc()
{
	# Produces a string of numbers "<T0> <T1> ... <T7> ", where TC is number
	# of TC that priority X is mapped to.
	dcb -j ets show dev $swp |
		jq -r '[.prio_tc | .[] | tostring + " "] | add'
}

get_buf_size()
{
	local idx=$1; shift

dcb -j buffer show dev $swp | jq ".buffer_size[$idx]"
}

get_tot_size()
{
	dcb -j buffer show dev $swp | jq '.total_size'
}

check_prio_pg()
{
	local expect=$1; shift

local current=$(get_prio_pg)
	test "$current" = "$expect"
	check_err $? "prio2buffer is '$current', expected '$expect'"
}

check_prio_pfc()
{
	local expect=$1; shift

local current=$(get_prio_pfc)
	test "$current" = "$expect"
	check_err $? "prio PFC is '$current', expected '$expect'"
}

check_prio_tc()
{
	local expect=$1; shift

local current=$(get_prio_tc)
	test "$current" = "$expect"
	check_err $? "prio_tc is '$current', expected '$expect'"
}

__check_buf_size()
{
	local idx=$1; shift
	local expr=$1; shift
	local what=$1; shift

local current=$(get_buf_size $idx)
	((current $expr))
	check_err $? "${what}buffer $idx size is '$current', expected '$expr'"
	echo $current
}

check_buf_size()
{
	__check_buf_size "$@" > /dev/null
}

test_defaults()
{
	RET=0

check_prio_pg "0 0 0 0 0 0 0 0 "
	check_prio_tc "0 0 0 0 0 0 0 0 "
	check_prio_pfc "0 0 0 0 0 0 0 0 "

log_test "Default headroom configuration"
}

test_dcb_ets()
{
	RET=0

dcb ets set dev $swp prio-tc 0:0 1:2 2:4 3:6 4:1 5:3 6:5 7:7

check_prio_pg "0 2 4 6 1 3 5 7 "
	check_prio_tc "0 2 4 6 1 3 5 7 "
	check_prio_pfc "0 0 0 0 0 0 0 0 "

dcb ets set dev $swp prio-tc all:0

check_prio_pg "0 0 0 0 0 0 0 0 "
	check_prio_tc "0 0 0 0 0 0 0 0 "

dcb buffer set dev $swp prio-buffer 0:1 1:3 2:5 3:7 4:0 5:2 6:4 7:6 2>/dev/null
	check_fail $? "prio2buffer accepted in DCB mode"

log_test "Configuring headroom through ETS"
}

test_mtu()
{
	local what=$1; shift
	local buf0size_2
	local buf0size

RET=0
	buf0size=$(__check_buf_size 0 "> 0")

mtu_set $swp 3000
	buf0size_2=$(__check_buf_size 0 "> $buf0size" "MTU 3000: ")
	mtu_restore $swp

mtu_set $swp 6000
	check_buf_size 0 "> $buf0size_2" "MTU 6000: "
	mtu_restore $swp

check_buf_size 0 "== $buf0size"

log_test "${what}MTU impacts buffer size"
}

test_tc_mtu()
{
	# In TC mode, MTU still impacts the threshold below which a buffer is
	# not permitted to go.

tc qdisc replace dev $swp root handle 1: bfifo limit 1.5M
	test_mtu "TC: "
	tc qdisc delete dev $swp root
}

test_pfc()
{
	RET=0

dcb ets set dev $swp prio-tc all:0 5:1 6:2 7:3

local buf0size=$(get_buf_size 0)
	local buf1size=$(get_buf_size 1)
	local buf2size=$(get_buf_size 2)
	local buf3size=$(get_buf_size 3)
	check_buf_size 0 "> 0"
	check_buf_size 1 "> 0"
	check_buf_size 2 "> 0"
	check_buf_size 3 "> 0"
	check_buf_size 4 "== 0"
	check_buf_size 5 "== 0"
	check_buf_size 6 "== 0"
	check_buf_size 7 "== 0"

log_test "Buffer size sans PFC"

RET=0

dcb pfc set dev $swp prio-pfc all:off 5:on 6:on 7:on delay 0

check_prio_pg "0 0 0 0 0 1 2 3 "
	check_prio_pfc "0 0 0 0 0 1 1 1 "
	check_buf_size 0 "== $buf0size"
	check_buf_size 1 "> $buf1size"
	check_buf_size 2 "> $buf2size"
	check_buf_size 3 "> $buf3size"

local buf1size=$(get_buf_size 1)
	check_buf_size 2 "== $buf1size"
	check_buf_size 3 "== $buf1size"

log_test "PFC: Cable length 0"

RET=0

dcb pfc set dev $swp delay 1000

check_buf_size 0 "== $buf0size"
	check_buf_size 1 "> $buf1size"
	check_buf_size 2 "> $buf1size"
	check_buf_size 3 "> $buf1size"

log_test "PFC: Cable length 1000"

RET=0

dcb pfc set dev $swp prio-pfc all:off delay 0
	dcb ets set dev $swp prio-tc all:0

check_prio_pg "0 0 0 0 0 0 0 0 "
	check_prio_tc "0 0 0 0 0 0 0 0 "
	check_buf_size 0 "> 0"
	check_buf_size 1 "== 0"
	check_buf_size 2 "== 0"
	check_buf_size 3 "== 0"
	check_buf_size 4 "== 0"
	check_buf_size 5 "== 0"
	check_buf_size 6 "== 0"
	check_buf_size 7 "== 0"

log_test "PFC: Restore defaults"
}

test_tc_priomap()
{
	RET=0

dcb ets set dev $swp prio-tc 0:0 1:1 2:2 3:3 4:4 5:5 6:6 7:7
	check_prio_pg "0 1 2 3 4 5 6 7 "

tc qdisc replace dev $swp root handle 1: bfifo limit 1.5M
	check_prio_pg "0 0 0 0 0 0 0 0 "

dcb buffer set dev $swp prio-buffer 0:1 1:3 2:5 3:7 4:0 5:2 6:4 7:6
	check_prio_pg "1 3 5 7 0 2 4 6 "

tc qdisc delete dev $swp root
	check_prio_pg "0 1 2 3 4 5 6 7 "

# Clean up.
	tc qdisc replace dev $swp root handle 1: bfifo limit 1.5M
	dcb buffer set dev $swp prio-buffer all:0
	tc qdisc delete dev $swp root
	dcb ets set dev $swp prio-tc all:0

log_test "TC: priomap"
}

test_tc_sizes()
{
	local cell_size=$(devlink_cell_size_get)
	local size=$((cell_size * 1000))

RET=0

dcb buffer set dev $swp buffer-size all:0 0:$size 2>/dev/null
	check_fail $? "buffer_size should fail before qdisc is added"

tc qdisc replace dev $swp root handle 1: bfifo limit 1.5M

dcb buffer set dev $swp buffer-size all:0 0:$size
	check_err $? "buffer_size should pass after qdisc is added"
	check_buf_size 0 "== $size" "set size: "

mtu_set $swp 6000
	check_buf_size 0 "== $size" "set MTU: "
	mtu_restore $swp

dcb buffer set dev $swp buffer-size all:0

# After replacing the qdisc for the same kind, buffer_size still has to
	# work.
	tc qdisc replace dev $swp root handle 1: bfifo limit 1M

dcb buffer set dev $swp buffer-size all:0 0:$size
	check_buf_size 0 "== $size" "post replace, set size: "

dcb buffer set dev $swp buffer-size all:0

# Likewise after replacing for a different kind.
	tc qdisc replace dev $swp root handle 2: prio bands 8

dcb buffer set dev $swp buffer-size all:0 0:$size
	check_buf_size 0 "== $size" "post replace different kind, set size: "

tc qdisc delete dev $swp root

dcb buffer set dev $swp buffer-size all:0 0:$size 2>/dev/null
	check_fail $? "buffer_size should fail after qdisc is deleted"

log_test "TC: buffer size"
}

test_int_buf()
{
	local what=$1; shift

RET=0

local buf0size=$(get_buf_size 0)
	local tot_size=$(get_tot_size)

# Size of internal buffer and buffer 9.
	local dsize=$((tot_size - buf0size))

tc qdisc add dev $swp clsact
	tc filter add dev $swp egress matchall skip_sw action mirred egress mirror dev $swp

local buf0size_2=$(get_buf_size 0)
	local tot_size_2=$(get_tot_size)
	local dsize_2=$((tot_size_2 - buf0size_2))

# Egress SPAN should have added to the "invisible" buffer configuration.
	((dsize_2 > dsize))
	check_err $? "Invisible buffers account for '$dsize_2', expected '> $dsize'"

mtu_set $swp 3000

local buf0size_3=$(get_buf_size 0)
	local tot_size_3=$(get_tot_size)
	local dsize_3=$((tot_size_3 - buf0size_3))

# MTU change might change buffer 0, which will show at total, but the
	# hidden buffers should stay the same size.
	((dsize_3 == dsize_2))
	check_err $? "MTU change: Invisible buffers account for '$dsize_3', expected '== $dsize_2'"

mtu_restore $swp
	tc qdisc del dev $swp clsact

# After SPAN removal, hidden buffers should be back to the original sizes.
	local buf0size_4=$(get_buf_size 0)
	local tot_size_4=$(get_tot_size)
	local dsize_4=$((tot_size_4 - buf0size_4))
	((dsize_4 == dsize))
	check_err $? "SPAN removed: Invisible buffers account for '$dsize_4', expected '== $dsize'"

log_test "${what}internal buffer size"
}

test_tc_int_buf()
{
	local cell_size=$(devlink_cell_size_get)
	local size=$((cell_size * 1000))

tc qdisc replace dev $swp root handle 1: bfifo limit 1.5M
	test_int_buf "TC: "

dcb buffer set dev $swp buffer-size all:0 0:$size
	test_int_buf "TC+buffsize: "

dcb buffer set dev $swp buffer-size all:0
	tc qdisc delete dev $swp root
}

trap cleanup EXIT

bail_on_lldpad
setup_wait
tests_run

exit $EXIT_STATUS

cmd: