tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1#!/bin/bash
2# SPDX-License-Identifier: GPL-2.0
3
4# A driver for the ETS selftest that implements testing in offloaded datapath.
5lib_dir=$(dirname $0)/../../../net/forwarding
6source $lib_dir/sch_ets_core.sh
7source $lib_dir/devlink_lib.sh
8
9ALL_TESTS="
10 ping_ipv4
11 priomap_mode
12 ets_test_strict
13 ets_test_mixed
14 ets_test_dwrr
15"
16
17PARENT="parent 3:3"
18
19switch_create()
20{
21 # Create a bottleneck so that the DWRR process can kick in.
22 tc qdisc replace dev $swp2 root handle 3: tbf rate 1gbit \
23 burst 128K limit 1G
24
25 ets_switch_create
26
27 # Set the ingress quota high and use the three egress TCs to limit the
28 # amount of traffic that is admitted to the shared buffers. This makes
29 # sure that there is always enough traffic of all types to select from
30 # for the DWRR process.
31 devlink_port_pool_th_save $swp1 0
32 devlink_port_pool_th_set $swp1 0 12
33 devlink_tc_bind_pool_th_save $swp1 0 ingress
34 devlink_tc_bind_pool_th_set $swp1 0 ingress 0 12
35 devlink_port_pool_th_save $swp2 4
36 devlink_port_pool_th_set $swp2 4 12
37 devlink_tc_bind_pool_th_save $swp2 7 egress
38 devlink_tc_bind_pool_th_set $swp2 7 egress 4 5
39 devlink_tc_bind_pool_th_save $swp2 6 egress
40 devlink_tc_bind_pool_th_set $swp2 6 egress 4 5
41 devlink_tc_bind_pool_th_save $swp2 5 egress
42 devlink_tc_bind_pool_th_set $swp2 5 egress 4 5
43
44 # Note: sch_ets_core.sh uses VLAN ingress-qos-map to assign packet
45 # priorities at $swp1 based on their 802.1p headers. ingress-qos-map is
46 # not offloaded by mlxsw as of this writing, but the mapping used is
47 # 1:1, which is the mapping currently hard-coded by the driver.
48}
49
50switch_destroy()
51{
52 devlink_tc_bind_pool_th_restore $swp2 5 egress
53 devlink_tc_bind_pool_th_restore $swp2 6 egress
54 devlink_tc_bind_pool_th_restore $swp2 7 egress
55 devlink_port_pool_th_restore $swp2 4
56 devlink_tc_bind_pool_th_restore $swp1 0 ingress
57 devlink_port_pool_th_restore $swp1 0
58
59 ets_switch_destroy
60
61 tc qdisc del dev $swp2 root handle 3:
62}
63
64# Callback from sch_ets_tests.sh
65collect_stats()
66{
67 local -a streams=("$@")
68 local stream
69
70 # Wait for qdisc counter update so that we don't get it mid-way through.
71 busywait_for_counter 1000 +1 \
72 qdisc_parent_stats_get $swp2 10:$((${streams[0]} + 1)) .bytes \
73 > /dev/null
74
75 for stream in ${streams[@]}; do
76 qdisc_parent_stats_get $swp2 10:$((stream + 1)) .bytes
77 done
78}
79
80bail_on_lldpad "configure DCB" "configure Qdiscs"
81ets_run