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 ${basedir}/parameters.sh
15
16# Trap EXIT first
17trap_exit
18
19# Set some default params, if they didn't get set
20if [ -z "$DEST_IP" ]; then
21    [ -z "$IP6" ] && DEST_IP="198.18.0.42" || DEST_IP="FD00::1"
22fi
23[ -z "$DST_MAC" ]   && DST_MAC="90:e2:ba:ff:ff:ff"
24[ -z "$CLONE_SKB" ] && CLONE_SKB="0"
25[ -z "$COUNT" ]     && COUNT="0" # Zero means indefinitely
26if [ -n "$DEST_IP" ]; then
27    validate_addr${IP6} $DEST_IP
28    read -r DST_MIN DST_MAX <<< $(parse_addr${IP6} $DEST_IP)
29fi
30if [ -n "$DST_PORT" ]; then
31    read -r UDP_DST_MIN UDP_DST_MAX <<< $(parse_ports $DST_PORT)
32    validate_ports $UDP_DST_MIN $UDP_DST_MAX
33fi
34
35# NOTICE:  Script specific settings
36# =======
37# Limiting the number of concurrent flows ($FLOWS)
38# and also set how many packets each flow contains ($FLOWLEN)
39#
40[ -z "$FLOWS" ]     && FLOWS="8000"
41[ -z "$FLOWLEN" ]   && FLOWLEN="10"
42
43if [[ -n "$BURST" ]]; then
44    err 1 "Bursting not supported for this mode"
45fi
46
47# 198.18.0.0 / 198.19.255.255
48read -r SRC_MIN SRC_MAX <<< $(parse_addr 198.18.0.0/15)
49
50# General cleanup everything since last run
51[ -z "$APPEND" ] && pg_ctrl "reset"
52
53# Threads are specified with parameter -t value in $THREADS
54for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do
55    dev=${DEV}@${thread}
56
57    # Add remove all other devices and add_device $dev to thread
58    [ -z "$APPEND" ] && pg_thread $thread "rem_device_all"
59    pg_thread $thread "add_device" $dev
60
61    # Base config
62    pg_set $dev "flag QUEUE_MAP_CPU"
63    pg_set $dev "count $COUNT"
64    pg_set $dev "clone_skb $CLONE_SKB"
65    pg_set $dev "pkt_size $PKT_SIZE"
66    pg_set $dev "delay $DELAY"
67    pg_set $dev "flag NO_TIMESTAMP"
68
69    # Single destination
70    pg_set $dev "dst_mac $DST_MAC"
71    pg_set $dev "dst${IP6}_min $DST_MIN"
72    pg_set $dev "dst${IP6}_max $DST_MAX"
73
74    if [ -n "$DST_PORT" ]; then
75	# Single destination port or random port range
76	pg_set $dev "flag UDPDST_RND"
77	pg_set $dev "udp_dst_min $UDP_DST_MIN"
78	pg_set $dev "udp_dst_max $UDP_DST_MAX"
79    fi
80
81    [ ! -z "$UDP_CSUM" ] && pg_set $dev "flag UDPCSUM"
82
83    # Randomize source IP-addresses
84    pg_set $dev "flag IPSRC_RND"
85    pg_set $dev "src_min $SRC_MIN"
86    pg_set $dev "src_max $SRC_MAX"
87
88    # Limit number of flows (max 65535)
89    pg_set $dev "flows $FLOWS"
90    #
91    # How many packets a flow will send, before flow "entry" is
92    # re-generated/setup.
93    pg_set $dev "flowlen $FLOWLEN"
94    #
95    # Flag FLOW_SEQ will cause $FLOWLEN packets from the same flow
96    # being send back-to-back, before next flow is selected
97    # incrementally.  This helps lookup caches, and is more realistic.
98    #
99    pg_set $dev "flag FLOW_SEQ"
100
101done
102
103# Run if user hits control-c
104function print_result() {
105    # Print results
106    for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do
107	dev=${DEV}@${thread}
108	echo "Device: $dev"
109	cat /proc/net/pktgen/$dev | grep -A2 "Result:"
110    done
111}
112# trap keyboard interrupt (Ctrl-C)
113trap true SIGINT
114
115if [ -z "$APPEND" ]; then
116    echo "Running... ctrl^C to stop" >&2
117    pg_ctrl "start"
118
119    print_result
120else
121    echo "Append mode: config done. Do more or use 'pg_ctrl start' to run"
122fi
123