| #!/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 |
