114 lines
3.3 KiB
Bash
Executable File
114 lines
3.3 KiB
Bash
Executable File
#!/bin/bash
|
|
# SPDX-License-Identifier: GPL-2.0
|
|
#
|
|
# Benchmark script:
|
|
# - developed for benchmarking ingress qdisc path
|
|
#
|
|
# Script for injecting packets into RX path of the stack with pktgen
|
|
# "xmit_mode netif_receive". With an invalid dst_mac this will only
|
|
# measure the ingress code path as packets gets dropped in ip_rcv().
|
|
#
|
|
# This script don't really need any hardware. It benchmarks software
|
|
# RX path just after NIC driver level. With bursting is also
|
|
# "removes" the SKB alloc/free overhead.
|
|
#
|
|
# Setup scenarios for measuring ingress qdisc (with invalid dst_mac):
|
|
# ------------------------------------------------------------------
|
|
# (1) no ingress (uses static_key_false(&ingress_needed))
|
|
#
|
|
# (2) ingress on other dev (change ingress_needed and calls
|
|
# handle_ing() but exit early)
|
|
#
|
|
# config: tc qdisc add dev $SOMEDEV handle ffff: ingress
|
|
#
|
|
# (3) ingress on this dev, handle_ing() -> tc_classify()
|
|
#
|
|
# config: tc qdisc add dev $DEV handle ffff: ingress
|
|
#
|
|
# (4) ingress on this dev + drop at u32 classifier/action.
|
|
#
|
|
basedir=`dirname $0`
|
|
source ${basedir}/functions.sh
|
|
root_check_run_with_sudo "$@"
|
|
|
|
# Parameter parsing via include
|
|
source ${basedir}/parameters.sh
|
|
|
|
# Trap EXIT first
|
|
trap_exit
|
|
|
|
# Using invalid DST_MAC will cause the packets to get dropped in
|
|
# ip_rcv() which is part of the test
|
|
if [ -z "$DEST_IP" ]; then
|
|
[ -z "$IP6" ] && DEST_IP="198.18.0.42" || DEST_IP="FD00::1"
|
|
fi
|
|
[ -z "$DST_MAC" ] && DST_MAC="90:e2:ba:ff:ff:ff"
|
|
[ -z "$BURST" ] && BURST=1024
|
|
[ -z "$COUNT" ] && COUNT="10000000" # Zero means indefinitely
|
|
if [ -n "$DEST_IP" ]; then
|
|
validate_addr${IP6} $DEST_IP
|
|
read -r DST_MIN DST_MAX <<< $(parse_addr${IP6} $DEST_IP)
|
|
fi
|
|
if [ -n "$DST_PORT" ]; then
|
|
read -r UDP_DST_MIN UDP_DST_MAX <<< $(parse_ports $DST_PORT)
|
|
validate_ports $UDP_DST_MIN $UDP_DST_MAX
|
|
fi
|
|
|
|
# General cleanup everything since last run
|
|
pg_ctrl "reset"
|
|
|
|
# Threads are specified with parameter -t value in $THREADS
|
|
for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do
|
|
# The device name is extended with @name, using thread number to
|
|
# make then unique, but any name will do.
|
|
dev=${DEV}@${thread}
|
|
|
|
# Add remove all other devices and add_device $dev to thread
|
|
pg_thread $thread "rem_device_all"
|
|
pg_thread $thread "add_device" $dev
|
|
|
|
# Base config of dev
|
|
pg_set $dev "flag QUEUE_MAP_CPU"
|
|
pg_set $dev "count $COUNT"
|
|
pg_set $dev "pkt_size $PKT_SIZE"
|
|
pg_set $dev "delay $DELAY"
|
|
pg_set $dev "flag NO_TIMESTAMP"
|
|
|
|
# Destination
|
|
pg_set $dev "dst_mac $DST_MAC"
|
|
pg_set $dev "dst${IP6}_min $DST_MIN"
|
|
pg_set $dev "dst${IP6}_max $DST_MAX"
|
|
|
|
if [ -n "$DST_PORT" ]; then
|
|
# Single destination port or random port range
|
|
pg_set $dev "flag UDPDST_RND"
|
|
pg_set $dev "udp_dst_min $UDP_DST_MIN"
|
|
pg_set $dev "udp_dst_max $UDP_DST_MAX"
|
|
fi
|
|
|
|
# Inject packet into RX path of stack
|
|
pg_set $dev "xmit_mode netif_receive"
|
|
|
|
# Burst allow us to avoid measuring SKB alloc/free overhead
|
|
pg_set $dev "burst $BURST"
|
|
done
|
|
|
|
# Run if user hits control-c
|
|
function print_result() {
|
|
# Print results
|
|
for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do
|
|
dev=${DEV}@${thread}
|
|
echo "Device: $dev"
|
|
cat /proc/net/pktgen/$dev | grep -A2 "Result:"
|
|
done
|
|
}
|
|
# trap keyboard interrupt (Ctrl-C)
|
|
trap true SIGINT
|
|
|
|
# start_run
|
|
echo "Running... ctrl^C to stop" >&2
|
|
pg_ctrl "start"
|
|
echo "Done" >&2
|
|
|
|
print_result
|