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# Script example for many flows testing
5#
6# Number of simultaneous flows limited by variable $FLOWS
7# and number of packets per flow controlled by variable $FLOWLEN
8#
9basedir=`dirname $0`
10source ${basedir}/functions.sh
11root_check_run_with_sudo "$@"
12
13# Parameter parsing via include
14source ${basedir}/parameters.sh
15# Set some default params, if they didn't get set
16[ -z "$DEST_IP" ] && DEST_IP="198.18.0.42"
17[ -z "$DST_MAC" ] && DST_MAC="90:e2:ba:ff:ff:ff"
18[ -z "$CLONE_SKB" ] && CLONE_SKB="0"
19[ -z "$COUNT" ] && COUNT="0" # Zero means indefinitely
20if [ -n "$DEST_IP" ]; then
21 validate_addr $DEST_IP
22 read -r DST_MIN DST_MAX <<< $(parse_addr $DEST_IP)
23fi
24if [ -n "$DST_PORT" ]; then
25 read -r UDP_DST_MIN UDP_DST_MAX <<< $(parse_ports $DST_PORT)
26 validate_ports $UDP_DST_MIN $UDP_DST_MAX
27fi
28
29# NOTICE: Script specific settings
30# =======
31# Limiting the number of concurrent flows ($FLOWS)
32# and also set how many packets each flow contains ($FLOWLEN)
33#
34[ -z "$FLOWS" ] && FLOWS="8000"
35[ -z "$FLOWLEN" ] && FLOWLEN="10"
36
37# Base Config
38DELAY="0" # Zero means max speed
39
40if [[ -n "$BURST" ]]; then
41 err 1 "Bursting not supported for this mode"
42fi
43
44# 198.18.0.0 / 198.19.255.255
45read -r SRC_MIN SRC_MAX <<< $(parse_addr 198.18.0.0/15)
46
47# General cleanup everything since last run
48pg_ctrl "reset"
49
50# Threads are specified with parameter -t value in $THREADS
51for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do
52 dev=${DEV}@${thread}
53
54 # Add remove all other devices and add_device $dev to thread
55 pg_thread $thread "rem_device_all"
56 pg_thread $thread "add_device" $dev
57
58 # Base config
59 pg_set $dev "flag QUEUE_MAP_CPU"
60 pg_set $dev "count $COUNT"
61 pg_set $dev "clone_skb $CLONE_SKB"
62 pg_set $dev "pkt_size $PKT_SIZE"
63 pg_set $dev "delay $DELAY"
64 pg_set $dev "flag NO_TIMESTAMP"
65
66 # Single destination
67 pg_set $dev "dst_mac $DST_MAC"
68 pg_set $dev "dst_min $DST_MIN"
69 pg_set $dev "dst_max $DST_MAX"
70
71 if [ -n "$DST_PORT" ]; then
72 # Single destination port or random port range
73 pg_set $dev "flag UDPDST_RND"
74 pg_set $dev "udp_dst_min $UDP_DST_MIN"
75 pg_set $dev "udp_dst_max $UDP_DST_MAX"
76 fi
77
78 # Randomize source IP-addresses
79 pg_set $dev "flag IPSRC_RND"
80 pg_set $dev "src_min $SRC_MIN"
81 pg_set $dev "src_max $SRC_MAX"
82
83 # Limit number of flows (max 65535)
84 pg_set $dev "flows $FLOWS"
85 #
86 # How many packets a flow will send, before flow "entry" is
87 # re-generated/setup.
88 pg_set $dev "flowlen $FLOWLEN"
89 #
90 # Flag FLOW_SEQ will cause $FLOWLEN packets from the same flow
91 # being send back-to-back, before next flow is selected
92 # incrementally. This helps lookup caches, and is more realistic.
93 #
94 pg_set $dev "flag FLOW_SEQ"
95
96done
97
98# Run if user hits control-c
99function print_result() {
100 # Print results
101 for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do
102 dev=${DEV}@${thread}
103 echo "Device: $dev"
104 cat /proc/net/pktgen/$dev | grep -A2 "Result:"
105 done
106}
107# trap keyboard interrupt (Ctrl-C)
108trap true SIGINT
109
110echo "Running... ctrl^C to stop" >&2
111pg_ctrl "start"
112
113print_result