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 # General cleanup everything since last run
  37 pg_ctrl "reset"
  38
  39 # Threads are specified with parameter -t value in $THREADS
  40 for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do
  41     # The device name is extended with @name, using thread number to
  42     # make then unique, but any name will do.
  43     dev=${DEV}@${thread}
  44
  45     # Add remove all other devices and add_device $dev to thread
  46     pg_thread $thread "rem_device_all"
  47     pg_thread $thread "add_device" $dev
  48
  49     # Base config of dev
  50     pg_set $dev "flag QUEUE_MAP_CPU"
  51     pg_set $dev "count $COUNT"
  52     pg_set $dev "pkt_size $PKT_SIZE"
  53     pg_set $dev "delay $DELAY"
  54     pg_set $dev "flag NO_TIMESTAMP"
  55
  56     # Destination
  57     pg_set $dev "dst_mac $DST_MAC"
  58     pg_set $dev "dst${IP6}_min $DST_MIN"
  59     pg_set $dev "dst${IP6}_max $DST_MAX"
  60
  61     if [ -n "$DST_PORT" ]; then
  62         # Single destination port or random port range
  63         pg_set $dev "flag UDPDST_RND"
  64         pg_set $dev "udp_dst_min $UDP_DST_MIN"
  65         pg_set $dev "udp_dst_max $UDP_DST_MAX"
  66     fi
  67
  68     # Inject packet into TX qdisc egress path of stack
  69     pg_set $dev "xmit_mode queue_xmit"
  70 done
  71
  72 # Run if user hits control-c
  73 function print_result {
  74     # Print results
  75     for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do
  76         dev=${DEV}@${thread}
  77         echo "Device: $dev"
  78         cat /proc/net/pktgen/$dev | grep -A2 "Result:"
  79     done
  80 }
  81 # trap keyboard interrupt (Ctrl-C)
  82 trap true SIGINT
  83
  84 # start_run
  85 echo "Running... ctrl^C to stop" >&2
  86 pg_ctrl "start"
  87 echo "Done" >&2
  88
  89 print_result