| #!/bin/bash | |
| # SPDX-License-Identifier: GPL-2.0 | |
| # | |
| # Simple example: | |
| # * pktgen sending with single thread and single interface | |
| # * flow variation via random UDP source port | |
| # | |
| basedir=`dirname $0` | |
| source ${basedir}/functions.sh | |
| root_check_run_with_sudo "$@" | |
| # Parameter parsing via include | |
| # - go look in parameters.sh to see which setting are avail | |
| # - required param is the interface "-i" stored in $DEV | |
| source ${basedir}/parameters.sh | |
| # Trap EXIT first | |
| trap_exit | |
| # | |
| # Set some default params, if they didn't get set | |
| if [ -z "$DEST_IP" ]; then | |
| [ -z "$IP6" ] && DEST_IP="198.18.0.42" || DEST_IP="FD00::1" | |
| fi | |
| [ -z "$CLONE_SKB" ] && CLONE_SKB="0" | |
| # Example enforce param "-m" for dst_mac | |
| [ -z "$DST_MAC" ] && usage && err 2 "Must specify -m dst_mac" | |
| [ -z "$COUNT" ] && COUNT="100000" # Zero means indefinitely | |
| if [ -n "$DEST_IP" ]; then | |
| validate_addr${IP6} $DEST_IP | |
| read -r DST_MIN DST_MAX <<< $(parse_addr${IP6} $DEST_IP) | |
| fi | |
| if [ -n "$DST_PORT" ]; then | |
| read -r UDP_DST_MIN UDP_DST_MAX <<< $(parse_ports $DST_PORT) | |
| validate_ports $UDP_DST_MIN $UDP_DST_MAX | |
| fi | |
| # Flow variation random source port between min and max | |
| UDP_SRC_MIN=9 | |
| UDP_SRC_MAX=109 | |
| # General cleanup everything since last run | |
| # (especially important if other threads were configured by other scripts) | |
| [ -z "$APPEND" ] && pg_ctrl "reset" | |
| # Add remove all other devices and add_device $DEV to thread 0 | |
| thread=0 | |
| [ -z "$APPEND" ] && pg_thread $thread "rem_device_all" | |
| pg_thread $thread "add_device" $DEV | |
| # How many packets to send (zero means indefinitely) | |
| pg_set $DEV "count $COUNT" | |
| # Reduce alloc cost by sending same SKB many times | |
| # - this obviously affects the randomness within the packet | |
| pg_set $DEV "clone_skb $CLONE_SKB" | |
| # Set packet size | |
| pg_set $DEV "pkt_size $PKT_SIZE" | |
| # Delay between packets (zero means max speed) | |
| pg_set $DEV "delay $DELAY" | |
| # Flag example disabling timestamping | |
| pg_set $DEV "flag NO_TIMESTAMP" | |
| # Destination | |
| pg_set $DEV "dst_mac $DST_MAC" | |
| pg_set $DEV "dst${IP6}_min $DST_MIN" | |
| pg_set $DEV "dst${IP6}_max $DST_MAX" | |
| if [ -n "$DST_PORT" ]; then | |
| # Single destination port or random port range | |
| pg_set $DEV "flag UDPDST_RND" | |
| pg_set $DEV "udp_dst_min $UDP_DST_MIN" | |
| pg_set $DEV "udp_dst_max $UDP_DST_MAX" | |
| fi | |
| [ ! -z "$UDP_CSUM" ] && pg_set $DEV "flag UDPCSUM" | |
| # Setup random UDP port src range | |
| pg_set $DEV "flag UDPSRC_RND" | |
| pg_set $DEV "udp_src_min $UDP_SRC_MIN" | |
| pg_set $DEV "udp_src_max $UDP_SRC_MAX" | |
| # Run if user hits control-c | |
| function print_result() { | |
| # Print results | |
| echo "Result device: $DEV" | |
| cat /proc/net/pktgen/$DEV | |
| } | |
| # trap keyboard interrupt (Ctrl-C) | |
| trap true SIGINT | |
| if [ -z "$APPEND" ]; then | |
| # start_run | |
| echo "Running... ctrl^C to stop" >&2 | |
| pg_ctrl "start" | |
| echo "Done" >&2 | |
| print_result | |
| else | |
| echo "Append mode: config done. Do more or use 'pg_ctrl start' to run" | |
| fi |