samples/pktgen/pktgen_sample02_multiqueue.sh

   1 #!/bin/bash
   2 # SPDX-License-Identifier: GPL-2.0
   3 #
   4 # Multiqueue: Using pktgen threads for sending on multiple CPUs
   5 #  * adding devices to kernel threads
   6 #  * notice the naming scheme for keeping device names unique
   7 #  * nameing scheme: dev@thread_number
   8 #  * flow variation via random UDP source port
   9 #
  10 basedir=`dirname $0`
  11 source ${basedir}/functions.sh
  12 root_check_run_with_sudo "$@"
  13 #
  14 # Required param: -i dev in $DEV
  15 source ${basedir}/parameters.sh
  16
  17 [ -z "$COUNT" ] && COUNT="100000" # Zero means indefinitely
  18
  19 # Base Config
  20 [ -z "$CLONE_SKB" ] && CLONE_SKB="0"
  21
  22 # Flow variation random source port between min and max
  23 UDP_SRC_MIN=9
  24 UDP_SRC_MAX=109
  25
  26 # (example of setting default params in your script)
  27 if [ -z "$DEST_IP" ]; then
  28     [ -z "$IP6" ] && DEST_IP="198.18.0.42" || DEST_IP="FD00::1"
  29 fi
  30 [ -z "$DST_MAC" ] && DST_MAC="90:e2:ba:ff:ff:ff"
  31 if [ -n "$DEST_IP" ]; then
  32     validate_addr${IP6} $DEST_IP
  33     read -r DST_MIN DST_MAX <<< $(parse_addr${IP6} $DEST_IP)
  34 fi
  35 if [ -n "$DST_PORT" ]; then
  36     read -r UDP_DST_MIN UDP_DST_MAX <<< $(parse_ports $DST_PORT)
  37     validate_ports $UDP_DST_MIN $UDP_DST_MAX
  38 fi
  39
  40 # General cleanup everything since last run
  41 [ -z "$APPEND" ] && pg_ctrl "reset"
  42
  43 # Threads are specified with parameter -t value in $THREADS
  44 for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do
  45     # The device name is extended with @name, using thread number to
  46     # make then unique, but any name will do.
  47     dev=${DEV}@${thread}
  48
  49     # Add remove all other devices and add_device $dev to thread
  50     [ -z "$APPEND" ] && pg_thread $thread "rem_device_all"
  51     pg_thread $thread "add_device" $dev
  52
  53     # Notice config queue to map to cpu (mirrors smp_processor_id())
  54     # It is beneficial to map IRQ /proc/irq/*/smp_affinity 1:1 to CPU number
  55     pg_set $dev "flag QUEUE_MAP_CPU"
  56
  57     # Base config of dev
  58     pg_set $dev "count $COUNT"
  59     pg_set $dev "clone_skb $CLONE_SKB"
  60     pg_set $dev "pkt_size $PKT_SIZE"
  61     pg_set $dev "delay $DELAY"
  62
  63     # Flag example disabling timestamping
  64     pg_set $dev "flag NO_TIMESTAMP"
  65
  66     # Destination
  67     pg_set $dev "dst_mac $DST_MAC"
  68     pg_set $dev "dst${IP6}_min $DST_MIN"
  69     pg_set $dev "dst${IP6}_max $DST_MAX"
  70
  71     if [ -n "$DST_PORT" ]; then
  72         # Single destination port or random port range
  73         pg_set $dev "flag UDPDST_RND"
  74         pg_set $dev "udp_dst_min $UDP_DST_MIN"
  75         pg_set $dev "udp_dst_max $UDP_DST_MAX"
  76     fi
  77
  78     [ ! -z "$UDP_CSUM" ] && pg_set $dev "flag UDPCSUM"
  79
  80     # Setup random UDP port src range
  81     pg_set $dev "flag UDPSRC_RND"
  82     pg_set $dev "udp_src_min $UDP_SRC_MIN"
  83     pg_set $dev "udp_src_max $UDP_SRC_MAX"
  84 done
  85
  86 # Run if user hits control-c
  87 function print_result() {
  88     # Print results
  89     for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do
  90         dev=${DEV}@${thread}
  91         echo "Device: $dev"
  92         cat /proc/net/pktgen/$dev | grep -A2 "Result:"
  93     done
  94 }
  95 # trap keyboard interrupt (Ctrl-C)
  96 trap true SIGINT
  97
  98 if [ -z "$APPEND" ]; then
  99     # start_run
 100     echo "Running... ctrl^C to stop" >&2
 101     pg_ctrl "start"
 102     echo "Done" >&2
 103
 104     print_result
 105 else
 106     echo "Append mode: config done. Do more or use 'pg_ctrl start' to run"
 107 fi