# A driver for the ETS selftest that implements testing in offloaded datapath.
lib_dir=$(dirname $0)/../../../net/forwarding
source $lib_dir/sch_ets_core.sh
source $lib_dir/devlink_lib.sh
switch_create()
{ # Create a bottleneck so that the DWRR process can kick in.
tc qdisc replace dev $swp2 root handle 3: tbf rate 1gbit \
burst 128K limit 1G
defer tc qdisc del dev $swp2 root handle 3:
ets_switch_create
# Set the ingress quota high and use the three egress TCs to limit the # amount of traffic that is admitted to the shared buffers. This makes # sure that there is always enough traffic of all types to select from # for the DWRR process.
devlink_port_pool_th_save $swp1 0
devlink_port_pool_th_set $swp1 0 12
defer devlink_port_pool_th_restore $swp1 0
# Note: sch_ets_core.sh uses VLAN ingress-qos-map to assign packet # priorities at $swp1 based on their 802.1p headers. ingress-qos-map is # not offloaded by mlxsw as of this writing, but the mapping used is # 1:1, which is the mapping currently hard-coded by the driver.
}
# Callback from sch_ets_tests.sh
collect_stats()
{
local -a streams=("$@")
local stream
# Wait for qdisc counter update so that we don't get it mid-way through.
busywait_for_counter 1000 +1 \
qdisc_parent_stats_get $swp2 10:$((${streams[0]} + 1)) .bytes \
> /dev/null
for stream in ${streams[@]}; do
qdisc_parent_stats_get $swp2 10:$((stream + 1)) .bytes done
}
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