2 # SPDX-License-Identifier: GPL-2.0
5 # * pktgen sending with single thread and single interface
6 # * flow variation via random UDP source port
9 source ${basedir}/functions.sh
10 root_check_run_with_sudo "$@"
12 # Parameter parsing via include
13 # - go look in parameters.sh to see which setting are avail
14 # - required param is the interface "-i" stored in $DEV
15 source ${basedir}/parameters.sh
17 # Set some default params, if they didn't get set
18 if [ -z "$DEST_IP" ]; then
19 [ -z "$IP6" ] && DEST_IP="198.18.0.42" || DEST_IP="FD00::1"
21 [ -z "$CLONE_SKB" ] && CLONE_SKB="0"
22 # Example enforce param "-m" for dst_mac
23 [ -z "$DST_MAC" ] && usage && err 2 "Must specify -m dst_mac"
24 [ -z "$COUNT" ] && COUNT="100000" # Zero means indefinitely
25 if [ -n "$DEST_IP" ]; then
26 validate_addr${IP6} $DEST_IP
27 read -r DST_MIN DST_MAX <<< $(parse_addr${IP6} $DEST_IP)
29 if [ -n "$DST_PORT" ]; then
30 read -r UDP_DST_MIN UDP_DST_MAX <<< $(parse_ports $DST_PORT)
31 validate_ports $UDP_DST_MIN $UDP_DST_MAX
34 # Flow variation random source port between min and max
38 # General cleanup everything since last run
39 # (especially important if other threads were configured by other scripts)
40 [ -z "$APPEND" ] && pg_ctrl "reset"
42 # Add remove all other devices and add_device $DEV to thread 0
44 [ -z "$APPEND" ] && pg_thread $thread "rem_device_all"
45 pg_thread $thread "add_device" $DEV
47 # How many packets to send (zero means indefinitely)
48 pg_set $DEV "count $COUNT"
50 # Reduce alloc cost by sending same SKB many times
51 # - this obviously affects the randomness within the packet
52 pg_set $DEV "clone_skb $CLONE_SKB"
55 pg_set $DEV "pkt_size $PKT_SIZE"
57 # Delay between packets (zero means max speed)
58 pg_set $DEV "delay $DELAY"
60 # Flag example disabling timestamping
61 pg_set $DEV "flag NO_TIMESTAMP"
64 pg_set $DEV "dst_mac $DST_MAC"
65 pg_set $DEV "dst${IP6}_min $DST_MIN"
66 pg_set $DEV "dst${IP6}_max $DST_MAX"
68 if [ -n "$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 $UDP_DST_MAX"
75 [ ! -z "$UDP_CSUM" ] && pg_set $dev "flag UDPCSUM"
77 # Setup random UDP port src range
78 pg_set $DEV "flag UDPSRC_RND"
79 pg_set $DEV "udp_src_min $UDP_SRC_MIN"
80 pg_set $DEV "udp_src_max $UDP_SRC_MAX"
82 # Run if user hits control-c
83 function print_result() {
85 echo "Result device: $DEV"
86 cat /proc/net/pktgen/$DEV
88 # trap keyboard interrupt (Ctrl-C)
91 if [ -z "$APPEND" ]; then
93 echo "Running... ctrl^C to stop" >&2
99 echo "Append mode: config done. Do more or use 'pg_ctrl start' to run"