samples/pktgen/pktgen_sample04_many_flows.sh

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