mirror of
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
synced 2025-08-21 06:50:25 +00:00
8fcac79270
mlxsw selftests often invoke a bail_on_lldpad() helper to make sure LLDPAD is not running, to prevent conflicts between the QoS configuration applied through TC or DCB command line tool, and the DCB configuration that LLDPAD might apply. This helper might be useful to others. Move the function to lib.sh, and parameterize to make reusable in other contexts. Signed-off-by: Petr Machata <petrm@nvidia.com> Reviewed-by: Danielle Ratson <danieller@nvidia.com> Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
379 lines
8.2 KiB
Bash
Executable file
379 lines
8.2 KiB
Bash
Executable file
#!/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 $lib_dir/devlink_lib.sh
|
|
|
|
swp=$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
|
|
}
|
|
|
|
bail_on_lldpad "configure DCB" "configure Qdiscs"
|
|
|
|
trap cleanup EXIT
|
|
setup_wait
|
|
tests_run
|
|
|
|
exit $EXIT_STATUS
|