LXR linux/samples/pktgen/pktgen_sample04_many

   1#!/bin/bash
   2# SPDX-License-Identifier: GPL-2.0
   3#
   4# Script example for many flows testing
   5#
   6# Number of simultaneous flows limited by variable $FLOWS
   7# and number of packets per flow controlled by variable $FLOWLEN
   8#
   9basedir=`dirname $0`
  10source ${basedir}/functions.sh
  11root_check_run_with_sudo "$@"
  12
  13# Parameter parsing via include
  14source ${basedir}/parameters.sh
  15# Set some default params, if they didn't get set
  16[ -z "$DEST_IP" ]   && DEST_IP="198.18.0.42"
  17[ -z "$DST_MAC" ]   && DST_MAC="90:e2:ba:ff:ff:ff"
  18[ -z "$CLONE_SKB" ] && CLONE_SKB="0"
  19[ -z "$COUNT" ]     && COUNT="0" # Zero means indefinitely
  20if [ -n "$DEST_IP" ]; then
  21    validate_addr $DEST_IP
  22    read -r DST_MIN DST_MAX <<< $(parse_addr $DEST_IP)
  23fi
  24if [ -n "$DST_PORT" ]; then
  25    read -r UDP_DST_MIN UDP_DST_MAX <<< $(parse_ports $DST_PORT)
  26    validate_ports $UDP_DST_MIN $UDP_DST_MAX
  27fi
  28
  29# NOTICE:  Script specific settings
  30# =======
  31# Limiting the number of concurrent flows ($FLOWS)
  32# and also set how many packets each flow contains ($FLOWLEN)
  33#
  34[ -z "$FLOWS" ]     && FLOWS="8000"
  35[ -z "$FLOWLEN" ]   && FLOWLEN="10"
  36
  37if [[ -n "$BURST" ]]; then
  38    err 1 "Bursting not supported for this mode"
  39fi
  40
  41# 198.18.0.0 / 198.19.255.255
  42read -r SRC_MIN SRC_MAX <<< $(parse_addr 198.18.0.0/15)
  43
  44# General cleanup everything since last run
  45[ -z "$APPEND" ] && pg_ctrl "reset"
  46
  47# Threads are specified with parameter -t value in $THREADS
  48for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do
  49    dev=${DEV}@${thread}
  50
  51    # Add remove all other devices and add_device $dev to thread
  52    [ -z "$APPEND" ] && pg_thread $thread "rem_device_all"
  53    pg_thread $thread "add_device" $dev
  54
  55    # Base config
  56    pg_set $dev "flag QUEUE_MAP_CPU"
  57    pg_set $dev "count $COUNT"
  58    pg_set $dev "clone_skb $CLONE_SKB"
  59    pg_set $dev "pkt_size $PKT_SIZE"
  60    pg_set $dev "delay $DELAY"
  61    pg_set $dev "flag NO_TIMESTAMP"
  62
  63    # Single destination
  64    pg_set $dev "dst_mac $DST_MAC"
  65    pg_set $dev "dst_min $DST_MIN"
  66    pg_set $dev "dst_max $DST_MAX"
  67
  68    if [ -n "$DST_PORT" ]; then
  69        # Single destination port or random port range
  70        pg_set $dev "flag UDPDST_RND"
  71        pg_set $dev "udp_dst_min $UDP_DST_MIN"
  72        pg_set $dev "udp_dst_max $UDP_DST_MAX"
  73    fi
  74
  75    # Randomize source IP-addresses
  76    pg_set $dev "flag IPSRC_RND"
  77    pg_set $dev "src_min $SRC_MIN"
  78    pg_set $dev "src_max $SRC_MAX"
  79
  80    # Limit number of flows (max 65535)
  81    pg_set $dev "flows $FLOWS"
  82    #
  83    # How many packets a flow will send, before flow "entry" is
  84    # re-generated/setup.
  85    pg_set $dev "flowlen $FLOWLEN"
  86    #
  87    # Flag FLOW_SEQ will cause $FLOWLEN packets from the same flow
  88    # being send back-to-back, before next flow is selected
  89    # incrementally.  This helps lookup caches, and is more realistic.
  90    #
  91    pg_set $dev "flag FLOW_SEQ"
  92
  93done
  94
  95# Run if user hits control-c
  96function print_result() {
  97    # Print results
  98    for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do
  99        dev=${DEV}@${thread}
 100        echo "Device: $dev"
 101        cat /proc/net/pktgen/$dev | grep -A2 "Result:"
 102    done
 103}
 104# trap keyboard interrupt (Ctrl-C)
 105trap true SIGINT
 106
 107if [ -z "$APPEND" ]; then
 108    echo "Running... ctrl^C to stop" >&2
 109    pg_ctrl "start"
 110
 111    print_result
 112else
 113    echo "Append mode: config done. Do more or use 'pg_ctrl start' to run"
 114fi
 115