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 "$DST_PORT" ]; then
  28     read -r DST_MIN DST_MAX <<< $(parse_ports $DST_PORT)
  29     validate_ports $DST_MIN $DST_MAX
  30 fi
  31
  32 # Base Config
  33 DELAY="0"        # Zero means max speed
  34
  35 # General cleanup everything since last run
  36 pg_ctrl "reset"
  37
  38 # Threads are specified with parameter -t value in $THREADS
  39 for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do
  40     # The device name is extended with @name, using thread number to
  41     # make then unique, but any name will do.
  42     dev=${DEV}@${thread}
  43
  44     # Add remove all other devices and add_device $dev to thread
  45     pg_thread $thread "rem_device_all"
  46     pg_thread $thread "add_device" $dev
  47
  48     # Base config of dev
  49     pg_set $dev "flag QUEUE_MAP_CPU"
  50     pg_set $dev "count $COUNT"
  51     pg_set $dev "pkt_size $PKT_SIZE"
  52     pg_set $dev "delay $DELAY"
  53     pg_set $dev "flag NO_TIMESTAMP"
  54
  55     # Destination
  56     pg_set $dev "dst_mac $DST_MAC"
  57     pg_set $dev "dst$IP6 $DEST_IP"
  58
  59     if [ -n "$DST_PORT" ]; then
  60         # Single destination port or random port range
  61         pg_set $dev "flag UDPDST_RND"
  62         pg_set $dev "udp_dst_min $DST_MIN"
  63         pg_set $dev "udp_dst_max $DST_MAX"
  64     fi
  65
  66     # Inject packet into TX qdisc egress path of stack
  67     pg_set $dev "xmit_mode queue_xmit"
  68 done
  69
  70 # start_run
  71 echo "Running... ctrl^C to stop" >&2
  72 pg_ctrl "start"
  73 echo "Done" >&2
  74
  75 # Print results
  76 for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do
  77     dev=${DEV}@${thread}
  78     echo "Device: $dev"
  79     cat /proc/net/pktgen/$dev | grep -A2 "Result:"
  80 done