samples/pktgen/pktgen_bench_xmit_mode_queue_xmit.sh

   1 #!/bin/bash
   2 # SPDX-License-Identifier: GPL-2.0
   3 #
   4 # Benchmark script:
   5 #  - developed for benchmarking egress qdisc path, derived (more
   6 #    like cut'n'pasted) from ingress benchmark script.
   7 #
   8 # Script for injecting packets into egress qdisc path of the stack
   9 # with pktgen "xmit_mode queue_xmit".
  10 #
  11 basedir=`dirname $0`
  12 source ${basedir}/functions.sh
  13 root_check_run_with_sudo "$@"
  14
  15 # Parameter parsing via include
  16 source ${basedir}/parameters.sh
  17 if [ -z "$DEST_IP" ]; then
  18     [ -z "$IP6" ] && DEST_IP="198.18.0.42" || DEST_IP="FD00::1"
  19 fi
  20 [ -z "$DST_MAC" ] && DST_MAC="90:e2:ba:ff:ff:ff"
  21
  22 # Burst greater than 1 are invalid for queue_xmit mode
  23 if [[ -n "$BURST" ]]; then
  24     err 1 "Bursting not supported for this mode"
  25 fi
  26 [ -z "$COUNT" ] && COUNT="10000000" # Zero means indefinitely
  27 if [ -n "$DEST_IP" ]; then
  28     validate_addr${IP6} $DEST_IP
  29     read -r DST_MIN DST_MAX <<< $(parse_addr${IP6} $DEST_IP)
  30 fi
  31 if [ -n "$DST_PORT" ]; then
  32     read -r UDP_DST_MIN UDP_DST_MAX <<< $(parse_ports $DST_PORT)
  33     validate_ports $UDP_DST_MIN $UDP_DST_MAX
  34 fi
  35
  36 # Base Config
  37 DELAY="0"        # Zero means max speed
  38
  39 # General cleanup everything since last run
  40 pg_ctrl "reset"
  41
  42 # Threads are specified with parameter -t value in $THREADS
  43 for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do
  44     # The device name is extended with @name, using thread number to
  45     # make then unique, but any name will do.
  46     dev=${DEV}@${thread}
  47
  48     # Add remove all other devices and add_device $dev to thread
  49     pg_thread $thread "rem_device_all"
  50     pg_thread $thread "add_device" $dev
  51
  52     # Base config of dev
  53     pg_set $dev "flag QUEUE_MAP_CPU"
  54     pg_set $dev "count $COUNT"
  55     pg_set $dev "pkt_size $PKT_SIZE"
  56     pg_set $dev "delay $DELAY"
  57     pg_set $dev "flag NO_TIMESTAMP"
  58
  59     # Destination
  60     pg_set $dev "dst_mac $DST_MAC"
  61     pg_set $dev "dst${IP6}_min $DST_MIN"
  62     pg_set $dev "dst${IP6}_max $DST_MAX"
  63
  64     if [ -n "$DST_PORT" ]; then
  65         # Single destination port or random port range
  66         pg_set $dev "flag UDPDST_RND"
  67         pg_set $dev "udp_dst_min $UDP_DST_MIN"
  68         pg_set $dev "udp_dst_max $UDP_DST_MAX"
  69     fi
  70
  71     # Inject packet into TX qdisc egress path of stack
  72     pg_set $dev "xmit_mode queue_xmit"
  73 done
  74
  75 # start_run
  76 echo "Running... ctrl^C to stop" >&2
  77 pg_ctrl "start"
  78 echo "Done" >&2
  79
  80 # Print results
  81 for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do
  82     dev=${DEV}@${thread}
  83     echo "Device: $dev"
  84     cat /proc/net/pktgen/$dev | grep -A2 "Result:"
  85 done