selftests: mlxsw: Add headroom handling test
Add a test for headroom configuration. This covers projection of ETS configuration to ingress, PFC, adjustments for MTU, the qdisc / TC mode and the effect of egress SPAN session on buffer configuration. Signed-off-by: Petr Machata <petrm@nvidia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Petr Machata
David S. Miller
Родитель
4b94a2fad8
Коммит
a65cc53a0e
|
|
@ -0,0 +1,379 @@
|
|||
#!/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()
|
||||
{
|
||||
__mlnx_qos -i $swp | sed -n '/^PFC/,/^[^[:space:]]/p' |
|
||||
grep buffer | sed 's/ \+/ /g' | cut -d' ' -f 2-
|
||||
}
|
||||
|
||||
get_prio_pfc()
|
||||
{
|
||||
__mlnx_qos -i $swp | sed -n '/^PFC/,/^[^[:space:]]/p' |
|
||||
grep enabled | sed 's/ \+/ /g' | cut -d' ' -f 2-
|
||||
}
|
||||
|
||||
get_prio_tc()
|
||||
{
|
||||
__mlnx_qos -i $swp | sed -n '/^tc/,$p' |
|
||||
awk '/^tc/ { TC = $2 }
|
||||
/priority:/ { PRIO[$2]=TC }
|
||||
END {
|
||||
for (i in PRIO)
|
||||
printf("%d ", PRIO[i])
|
||||
}'
|
||||
}
|
||||
|
||||
get_buf_size()
|
||||
{
|
||||
local idx=$1; shift
|
||||
|
||||
__mlnx_qos -i $swp | grep Receive | sed 's/.*: //' | cut -d, -f $((idx + 1))
|
||||
}
|
||||
|
||||
get_tot_size()
|
||||
{
|
||||
__mlnx_qos -i $swp | grep Receive | sed 's/.*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
|
||||
|
||||
__mlnx_qos -i $swp --prio_tc=0,2,4,6,1,3,5,7 > /dev/null
|
||||
|
||||
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 "
|
||||
|
||||
__mlnx_qos -i $swp --prio_tc=0,0,0,0,0,0,0,0 > /dev/null
|
||||
|
||||
check_prio_pg "0 0 0 0 0 0 0 0 "
|
||||
check_prio_tc "0 0 0 0 0 0 0 0 "
|
||||
|
||||
__mlnx_qos -i $swp --prio2buffer=1,3,5,7,0,2,4,6 &> /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
|
||||
|
||||
__mlnx_qos -i $swp --prio_tc=0,0,0,0,0,1,2,3 > /dev/null
|
||||
|
||||
local buf0size=$(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
|
||||
|
||||
__mlnx_qos -i $swp --pfc=0,0,0,0,0,1,1,1 --cable_len=0 > /dev/null
|
||||
|
||||
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
|
||||
|
||||
__mlnx_qos -i $swp --pfc=0,0,0,0,0,1,1,1 --cable_len=1000 > /dev/null
|
||||
|
||||
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
|
||||
|
||||
__mlnx_qos -i $swp --pfc=0,0,0,0,0,0,0,0 --cable_len=0 > /dev/null
|
||||
__mlnx_qos -i $swp --prio_tc=0,0,0,0,0,0,0,0 > /dev/null
|
||||
|
||||
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
|
||||
|
||||
__mlnx_qos -i $swp --prio_tc=0,1,2,3,4,5,6,7 > /dev/null
|
||||
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 "
|
||||
|
||||
__mlnx_qos -i $swp --prio2buffer=1,3,5,7,0,2,4,6 > /dev/null
|
||||
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
|
||||
__mlnx_qos -i $swp --prio2buffer=0,0,0,0,0,0,0,0 > /dev/null
|
||||
tc qdisc delete dev $swp root
|
||||
__mlnx_qos -i $swp --prio_tc=0,0,0,0,0,0,0,0 > /dev/null
|
||||
|
||||
log_test "TC: priomap"
|
||||
}
|
||||
|
||||
test_tc_sizes()
|
||||
{
|
||||
local cell_size=$(devlink_cell_size_get)
|
||||
local size=$((cell_size * 1000))
|
||||
|
||||
RET=0
|
||||
|
||||
__mlnx_qos -i $swp --buffer_size=$size,0,0,0,0,0,0,0 &> /dev/null
|
||||
check_fail $? "buffer_size should fail before qdisc is added"
|
||||
|
||||
tc qdisc replace dev $swp root handle 1: bfifo limit 1.5M
|
||||
|
||||
__mlnx_qos -i $swp --buffer_size=$size,0,0,0,0,0,0,0 > /dev/null
|
||||
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
|
||||
|
||||
__mlnx_qos -i $swp --buffer_size=0,0,0,0,0,0,0,0 > /dev/null
|
||||
|
||||
# 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
|
||||
|
||||
__mlnx_qos -i $swp --buffer_size=$size,0,0,0,0,0,0,0 > /dev/null
|
||||
check_buf_size 0 "== $size" "post replace, set size: "
|
||||
|
||||
__mlnx_qos -i $swp --buffer_size=0,0,0,0,0,0,0,0 > /dev/null
|
||||
|
||||
# Likewise after replacing for a different kind.
|
||||
tc qdisc replace dev $swp root handle 2: prio bands 8
|
||||
|
||||
__mlnx_qos -i $swp --buffer_size=$size,0,0,0,0,0,0,0 > /dev/null
|
||||
check_buf_size 0 "== $size" "post replace different kind, set size: "
|
||||
|
||||
tc qdisc delete dev $swp root
|
||||
|
||||
__mlnx_qos -i $swp --buffer_size=$size,0,0,0,0,0,0,0 &> /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: "
|
||||
|
||||
__mlnx_qos -i $swp --buffer_size=$size,0,0,0,0,0,0,0 > /dev/null
|
||||
test_int_buf "TC+buffsize: "
|
||||
|
||||
__mlnx_qos -i $swp --buffer_size=0,0,0,0,0,0,0,0 > /dev/null
|
||||
tc qdisc delete dev $swp root
|
||||
}
|
||||
|
||||
trap cleanup EXIT
|
||||
|
||||
bail_on_lldpad
|
||||
setup_wait
|
||||
tests_run
|
||||
|
||||
exit $EXIT_STATUS
|
||||
Загрузка…
Ссылка в новой задаче