name : pktgen_sample01_simple.sh #!/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