105a14d5eSJesper Dangaard Brouer#!/bin/bash 2b2441318SGreg Kroah-Hartman# SPDX-License-Identifier: GPL-2.0 305a14d5eSJesper Dangaard Brouer# 405a14d5eSJesper Dangaard Brouer# Benchmark script: 505a14d5eSJesper Dangaard Brouer# - developed for benchmarking ingress qdisc path 605a14d5eSJesper Dangaard Brouer# 705a14d5eSJesper Dangaard Brouer# Script for injecting packets into RX path of the stack with pktgen 805a14d5eSJesper Dangaard Brouer# "xmit_mode netif_receive". With an invalid dst_mac this will only 905a14d5eSJesper Dangaard Brouer# measure the ingress code path as packets gets dropped in ip_rcv(). 1005a14d5eSJesper Dangaard Brouer# 1105a14d5eSJesper Dangaard Brouer# This script don't really need any hardware. It benchmarks software 1205a14d5eSJesper Dangaard Brouer# RX path just after NIC driver level. With bursting is also 1305a14d5eSJesper Dangaard Brouer# "removes" the SKB alloc/free overhead. 1405a14d5eSJesper Dangaard Brouer# 1505a14d5eSJesper Dangaard Brouer# Setup scenarios for measuring ingress qdisc (with invalid dst_mac): 1605a14d5eSJesper Dangaard Brouer# ------------------------------------------------------------------ 1705a14d5eSJesper Dangaard Brouer# (1) no ingress (uses static_key_false(&ingress_needed)) 1805a14d5eSJesper Dangaard Brouer# 1905a14d5eSJesper Dangaard Brouer# (2) ingress on other dev (change ingress_needed and calls 2005a14d5eSJesper Dangaard Brouer# handle_ing() but exit early) 2105a14d5eSJesper Dangaard Brouer# 2205a14d5eSJesper Dangaard Brouer# config: tc qdisc add dev $SOMEDEV handle ffff: ingress 2305a14d5eSJesper Dangaard Brouer# 2405a14d5eSJesper Dangaard Brouer# (3) ingress on this dev, handle_ing() -> tc_classify() 2505a14d5eSJesper Dangaard Brouer# 2605a14d5eSJesper Dangaard Brouer# config: tc qdisc add dev $DEV handle ffff: ingress 2705a14d5eSJesper Dangaard Brouer# 2805a14d5eSJesper Dangaard Brouer# (4) ingress on this dev + drop at u32 classifier/action. 2905a14d5eSJesper Dangaard Brouer# 3005a14d5eSJesper Dangaard Brouerbasedir=`dirname $0` 3105a14d5eSJesper Dangaard Brouersource ${basedir}/functions.sh 3205a14d5eSJesper Dangaard Brouerroot_check_run_with_sudo "$@" 3305a14d5eSJesper Dangaard Brouer 3405a14d5eSJesper Dangaard Brouer# Parameter parsing via include 3505a14d5eSJesper Dangaard Brouersource ${basedir}/parameters.sh 3605a14d5eSJesper Dangaard Brouer# Using invalid DST_MAC will cause the packets to get dropped in 3705a14d5eSJesper Dangaard Brouer# ip_rcv() which is part of the test 380f06a678SMartin KaFai Lauif [ -z "$DEST_IP" ]; then 390f06a678SMartin KaFai Lau [ -z "$IP6" ] && DEST_IP="198.18.0.42" || DEST_IP="FD00::1" 400f06a678SMartin KaFai Laufi 4105a14d5eSJesper Dangaard Brouer[ -z "$DST_MAC" ] && DST_MAC="90:e2:ba:ff:ff:ff" 4205a14d5eSJesper Dangaard Brouer[ -z "$BURST" ] && BURST=1024 4369137ea6STariq Toukan[ -z "$COUNT" ] && COUNT="10000000" # Zero means indefinitely 446e32a74aSDaniel T. Leeif [ -n "$DST_PORT" ]; then 45723d2904SDaniel T. Lee read -r UDP_DST_MIN UDP_DST_MAX <<< $(parse_ports $DST_PORT) 46723d2904SDaniel T. Lee validate_ports $UDP_DST_MIN $UDP_DST_MAX 476e32a74aSDaniel T. Leefi 4805a14d5eSJesper Dangaard Brouer 4905a14d5eSJesper Dangaard Brouer# Base Config 5005a14d5eSJesper Dangaard BrouerDELAY="0" # Zero means max speed 5105a14d5eSJesper Dangaard Brouer 5205a14d5eSJesper Dangaard Brouer# General cleanup everything since last run 5305a14d5eSJesper Dangaard Brouerpg_ctrl "reset" 5405a14d5eSJesper Dangaard Brouer 5505a14d5eSJesper Dangaard Brouer# Threads are specified with parameter -t value in $THREADS 56e0e16672STariq Toukanfor ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do 5705a14d5eSJesper Dangaard Brouer # The device name is extended with @name, using thread number to 5805a14d5eSJesper Dangaard Brouer # make then unique, but any name will do. 5905a14d5eSJesper Dangaard Brouer dev=${DEV}@${thread} 6005a14d5eSJesper Dangaard Brouer 6105a14d5eSJesper Dangaard Brouer # Add remove all other devices and add_device $dev to thread 6205a14d5eSJesper Dangaard Brouer pg_thread $thread "rem_device_all" 6305a14d5eSJesper Dangaard Brouer pg_thread $thread "add_device" $dev 6405a14d5eSJesper Dangaard Brouer 6505a14d5eSJesper Dangaard Brouer # Base config of dev 6605a14d5eSJesper Dangaard Brouer pg_set $dev "flag QUEUE_MAP_CPU" 6705a14d5eSJesper Dangaard Brouer pg_set $dev "count $COUNT" 6805a14d5eSJesper Dangaard Brouer pg_set $dev "pkt_size $PKT_SIZE" 6905a14d5eSJesper Dangaard Brouer pg_set $dev "delay $DELAY" 7005a14d5eSJesper Dangaard Brouer pg_set $dev "flag NO_TIMESTAMP" 7105a14d5eSJesper Dangaard Brouer 7205a14d5eSJesper Dangaard Brouer # Destination 7305a14d5eSJesper Dangaard Brouer pg_set $dev "dst_mac $DST_MAC" 740f06a678SMartin KaFai Lau pg_set $dev "dst$IP6 $DEST_IP" 7505a14d5eSJesper Dangaard Brouer 766e32a74aSDaniel T. Lee if [ -n "$DST_PORT" ]; then 776e32a74aSDaniel T. Lee # Single destination port or random port range 786e32a74aSDaniel T. Lee pg_set $dev "flag UDPDST_RND" 79723d2904SDaniel T. Lee pg_set $dev "udp_dst_min $UDP_DST_MIN" 80723d2904SDaniel T. Lee pg_set $dev "udp_dst_max $UDP_DST_MAX" 816e32a74aSDaniel T. Lee fi 826e32a74aSDaniel T. Lee 8305a14d5eSJesper Dangaard Brouer # Inject packet into RX path of stack 8405a14d5eSJesper Dangaard Brouer pg_set $dev "xmit_mode netif_receive" 8505a14d5eSJesper Dangaard Brouer 8605a14d5eSJesper Dangaard Brouer # Burst allow us to avoid measuring SKB alloc/free overhead 8705a14d5eSJesper Dangaard Brouer pg_set $dev "burst $BURST" 8805a14d5eSJesper Dangaard Brouerdone 8905a14d5eSJesper Dangaard Brouer 9005a14d5eSJesper Dangaard Brouer# start_run 9105a14d5eSJesper Dangaard Brouerecho "Running... ctrl^C to stop" >&2 9205a14d5eSJesper Dangaard Brouerpg_ctrl "start" 9305a14d5eSJesper Dangaard Brouerecho "Done" >&2 9405a14d5eSJesper Dangaard Brouer 9505a14d5eSJesper Dangaard Brouer# Print results 96e0e16672STariq Toukanfor ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do 9705a14d5eSJesper Dangaard Brouer dev=${DEV}@${thread} 9805a14d5eSJesper Dangaard Brouer echo "Device: $dev" 9905a14d5eSJesper Dangaard Brouer cat /proc/net/pktgen/$dev | grep -A2 "Result:" 10005a14d5eSJesper Dangaard Brouerdone 101