2 # SPDX-License-Identifier: GPL-2.0
4 # Script will generate one flow per thread (-t N)
5 # - Same destination IP
6 # - Fake source IPs for each flow (fixed based on thread number)
8 # Useful for scale testing on receiver, to see whether silo'ing flows
9 # works and scales. For optimal scalability (on receiver) each
10 # separate-flow should not access shared variables/data. This script
11 # helps magnify any of these scaling issues by overloading the receiver.
14 source ${basedir}/functions.sh
15 root_check_run_with_sudo "$@"
17 # Parameter parsing via include
18 source ${basedir}/parameters.sh
19 # Set some default params, if they didn't get set
20 [ -z "$DEST_IP" ] && DEST_IP="198.18.0.42"
21 [ -z "$DST_MAC" ] && DST_MAC="90:e2:ba:ff:ff:ff"
22 [ -z "$CLONE_SKB" ] && CLONE_SKB="0"
23 [ -z "$BURST" ] && BURST=32
24 [ -z "$COUNT" ] && COUNT="0" # Zero means indefinitely
25 if [ -n "$DST_PORT" ]; then
26 read -r DST_MIN DST_MAX <<< $(parse_ports $DST_PORT)
27 validate_ports $DST_MIN $DST_MAX
31 DELAY="0" # Zero means max speed
33 # General cleanup everything since last run
36 # Threads are specified with parameter -t value in $THREADS
37 for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do
40 # Add remove all other devices and add_device $dev to thread
41 pg_thread $thread "rem_device_all"
42 pg_thread $thread "add_device" $dev
45 pg_set $dev "flag QUEUE_MAP_CPU"
46 pg_set $dev "count $COUNT"
47 pg_set $dev "clone_skb $CLONE_SKB"
48 pg_set $dev "pkt_size $PKT_SIZE"
49 pg_set $dev "delay $DELAY"
50 pg_set $dev "flag NO_TIMESTAMP"
53 pg_set $dev "dst_mac $DST_MAC"
54 pg_set $dev "dst $DEST_IP"
56 if [ -n "$DST_PORT" ]; then
57 # Single destination port or random port range
58 pg_set $dev "flag UDPDST_RND"
59 pg_set $dev "udp_dst_min $DST_MIN"
60 pg_set $dev "udp_dst_max $DST_MAX"
63 # Setup source IP-addresses based on thread number
64 pg_set $dev "src_min 198.18.$((thread+1)).1"
65 pg_set $dev "src_max 198.18.$((thread+1)).1"
67 # Setup burst, for easy testing -b 0 disable bursting
68 # (internally in pktgen default and minimum burst=1)
69 if [[ ${BURST} -ne 0 ]]; then
70 pg_set $dev "burst $BURST"
72 info "$dev: Not using burst"
77 # Run if user hits control-c
78 function print_result() {
80 for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do
83 cat /proc/net/pktgen/$dev | grep -A2 "Result:"
86 # trap keyboard interrupt (Ctrl-C)
89 echo "Running... ctrl^C to stop" >&2