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 4440f843eeSDaniel T. Leeif [ -n "$DEST_IP" ]; then 4540f843eeSDaniel T. Lee validate_addr${IP6} $DEST_IP 4640f843eeSDaniel T. Lee read -r DST_MIN DST_MAX <<< $(parse_addr${IP6} $DEST_IP) 4740f843eeSDaniel T. Leefi 486e32a74aSDaniel T. Leeif [ -n "$DST_PORT" ]; then 49723d2904SDaniel T. Lee read -r UDP_DST_MIN UDP_DST_MAX <<< $(parse_ports $DST_PORT) 50723d2904SDaniel T. Lee validate_ports $UDP_DST_MIN $UDP_DST_MAX 516e32a74aSDaniel T. Leefi 5205a14d5eSJesper Dangaard Brouer 5305a14d5eSJesper Dangaard Brouer# General cleanup everything since last run 5405a14d5eSJesper Dangaard Brouerpg_ctrl "reset" 5505a14d5eSJesper Dangaard Brouer 5605a14d5eSJesper Dangaard Brouer# Threads are specified with parameter -t value in $THREADS 57e0e16672STariq Toukanfor ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do 5805a14d5eSJesper Dangaard Brouer # The device name is extended with @name, using thread number to 5905a14d5eSJesper Dangaard Brouer # make then unique, but any name will do. 6005a14d5eSJesper Dangaard Brouer dev=${DEV}@${thread} 6105a14d5eSJesper Dangaard Brouer 6205a14d5eSJesper Dangaard Brouer # Add remove all other devices and add_device $dev to thread 6305a14d5eSJesper Dangaard Brouer pg_thread $thread "rem_device_all" 6405a14d5eSJesper Dangaard Brouer pg_thread $thread "add_device" $dev 6505a14d5eSJesper Dangaard Brouer 6605a14d5eSJesper Dangaard Brouer # Base config of dev 6705a14d5eSJesper Dangaard Brouer pg_set $dev "flag QUEUE_MAP_CPU" 6805a14d5eSJesper Dangaard Brouer pg_set $dev "count $COUNT" 6905a14d5eSJesper Dangaard Brouer pg_set $dev "pkt_size $PKT_SIZE" 7005a14d5eSJesper Dangaard Brouer pg_set $dev "delay $DELAY" 7105a14d5eSJesper Dangaard Brouer pg_set $dev "flag NO_TIMESTAMP" 7205a14d5eSJesper Dangaard Brouer 7305a14d5eSJesper Dangaard Brouer # Destination 7405a14d5eSJesper Dangaard Brouer pg_set $dev "dst_mac $DST_MAC" 7540f843eeSDaniel T. Lee pg_set $dev "dst${IP6}_min $DST_MIN" 7640f843eeSDaniel T. Lee pg_set $dev "dst${IP6}_max $DST_MAX" 7705a14d5eSJesper Dangaard Brouer 786e32a74aSDaniel T. Lee if [ -n "$DST_PORT" ]; then 796e32a74aSDaniel T. Lee # Single destination port or random port range 806e32a74aSDaniel T. Lee pg_set $dev "flag UDPDST_RND" 81723d2904SDaniel T. Lee pg_set $dev "udp_dst_min $UDP_DST_MIN" 82723d2904SDaniel T. Lee pg_set $dev "udp_dst_max $UDP_DST_MAX" 836e32a74aSDaniel T. Lee fi 846e32a74aSDaniel T. Lee 8505a14d5eSJesper Dangaard Brouer # Inject packet into RX path of stack 8605a14d5eSJesper Dangaard Brouer pg_set $dev "xmit_mode netif_receive" 8705a14d5eSJesper Dangaard Brouer 8805a14d5eSJesper Dangaard Brouer # Burst allow us to avoid measuring SKB alloc/free overhead 8905a14d5eSJesper Dangaard Brouer pg_set $dev "burst $BURST" 9005a14d5eSJesper Dangaard Brouerdone 9105a14d5eSJesper Dangaard Brouer 92*6c882bdcSJuhee Kang# Run if user hits control-c 93*6c882bdcSJuhee Kangfunction print_result() { 9405a14d5eSJesper Dangaard Brouer # Print results 95e0e16672STariq Toukan for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do 9605a14d5eSJesper Dangaard Brouer dev=${DEV}@${thread} 9705a14d5eSJesper Dangaard Brouer echo "Device: $dev" 9805a14d5eSJesper Dangaard Brouer cat /proc/net/pktgen/$dev | grep -A2 "Result:" 9905a14d5eSJesper Dangaard Brouer done 100*6c882bdcSJuhee Kang} 101*6c882bdcSJuhee Kang# trap keyboard interrupt (Ctrl-C) 102*6c882bdcSJuhee Kangtrap true SIGINT 103*6c882bdcSJuhee Kang 104*6c882bdcSJuhee Kang# start_run 105*6c882bdcSJuhee Kangecho "Running... ctrl^C to stop" >&2 106*6c882bdcSJuhee Kangpg_ctrl "start" 107*6c882bdcSJuhee Kangecho "Done" >&2 108*6c882bdcSJuhee Kang 109*6c882bdcSJuhee Kangprint_result 110