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