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