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# Benchmark script:
5# - developed for benchmarking egress qdisc path, derived (more
6# like cut'n'pasted) from ingress benchmark script.
7#
8# Script for injecting packets into egress qdisc path of the stack
9# with pktgen "xmit_mode queue_xmit".
10#
11basedir=`dirname $0`
12source ${basedir}/functions.sh
13root_check_run_with_sudo "$@"
14
15# Parameter parsing via include
16source ${basedir}/parameters.sh
17if [ -z "$DEST_IP" ]; then
18 [ -z "$IP6" ] && DEST_IP="198.18.0.42" || DEST_IP="FD00::1"
19fi
20[ -z "$DST_MAC" ] && DST_MAC="90:e2:ba:ff:ff:ff"
21
22# Burst greater than 1 are invalid for queue_xmit mode
23if [[ -n "$BURST" ]]; then
24 err 1 "Bursting not supported for this mode"
25fi
26[ -z "$COUNT" ] && COUNT="10000000" # Zero means indefinitely
27if [ -n "$DEST_IP" ]; then
28 validate_addr${IP6} $DEST_IP
29 read -r DST_MIN DST_MAX <<< $(parse_addr${IP6} $DEST_IP)
30fi
31if [ -n "$DST_PORT" ]; then
32 read -r UDP_DST_MIN UDP_DST_MAX <<< $(parse_ports $DST_PORT)
33 validate_ports $UDP_DST_MIN $UDP_DST_MAX
34fi
35
36# Base Config
37DELAY="0" # Zero means max speed
38
39# General cleanup everything since last run
40pg_ctrl "reset"
41
42# Threads are specified with parameter -t value in $THREADS
43for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do
44 # The device name is extended with @name, using thread number to
45 # make then unique, but any name will do.
46 dev=${DEV}@${thread}
47
48 # Add remove all other devices and add_device $dev to thread
49 pg_thread $thread "rem_device_all"
50 pg_thread $thread "add_device" $dev
51
52 # Base config of dev
53 pg_set $dev "flag QUEUE_MAP_CPU"
54 pg_set $dev "count $COUNT"
55 pg_set $dev "pkt_size $PKT_SIZE"
56 pg_set $dev "delay $DELAY"
57 pg_set $dev "flag NO_TIMESTAMP"
58
59 # Destination
60 pg_set $dev "dst_mac $DST_MAC"
61 pg_set $dev "dst${IP6}_min $DST_MIN"
62 pg_set $dev "dst${IP6}_max $DST_MAX"
63
64 if [ -n "$DST_PORT" ]; then
65 # Single destination port or random port range
66 pg_set $dev "flag UDPDST_RND"
67 pg_set $dev "udp_dst_min $UDP_DST_MIN"
68 pg_set $dev "udp_dst_max $UDP_DST_MAX"
69 fi
70
71 # Inject packet into TX qdisc egress path of stack
72 pg_set $dev "xmit_mode queue_xmit"
73done
74
75# start_run
76echo "Running... ctrl^C to stop" >&2
77pg_ctrl "start"
78echo "Done" >&2
79
80# Print results
81for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do
82 dev=${DEV}@${thread}
83 echo "Device: $dev"
84 cat /proc/net/pktgen/$dev | grep -A2 "Result:"
85done