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 ${basedir}/parameters.sh
  15
  16 # Trap EXIT first
  17 trap_exit
  18
  19 # Set some default params, if they didn't get set
  20 if [ -z "$DEST_IP" ]; then
  21     [ -z "$IP6" ] && DEST_IP="198.18.0.42" || DEST_IP="FD00::1"
  22 fi
  23 [ -z "$DST_MAC" ]   && DST_MAC="90:e2:ba:ff:ff:ff"
  24 [ -z "$CLONE_SKB" ] && CLONE_SKB="0"
  25 [ -z "$COUNT" ]     && COUNT="0" # Zero means indefinitely
  26 if [ -n "$DEST_IP" ]; then
  27     validate_addr${IP6} $DEST_IP
  28     read -r DST_MIN DST_MAX <<< $(parse_addr${IP6} $DEST_IP)
  29 fi
  30 if [ -n "$DST_PORT" ]; then
  31     read -r UDP_DST_MIN UDP_DST_MAX <<< $(parse_ports $DST_PORT)
  32     validate_ports $UDP_DST_MIN $UDP_DST_MAX
  33 fi
  34
  35 # NOTICE:  Script specific settings
  36 # =======
  37 # Limiting the number of concurrent flows ($FLOWS)
  38 # and also set how many packets each flow contains ($FLOWLEN)
  39 #
  40 [ -z "$FLOWS" ]     && FLOWS="8000"
  41 [ -z "$FLOWLEN" ]   && FLOWLEN="10"
  42
  43 if [[ -n "$BURST" ]]; then
  44     err 1 "Bursting not supported for this mode"
  45 fi
  46
  47 # 198.18.0.0 / 198.19.255.255
  48 read -r SRC_MIN SRC_MAX <<< $(parse_addr 198.18.0.0/15)
  49
  50 # General cleanup everything since last run
  51 [ -z "$APPEND" ] && pg_ctrl "reset"
  52
  53 # Threads are specified with parameter -t value in $THREADS
  54 for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do
  55     dev=${DEV}@${thread}
  56
  57     # Add remove all other devices and add_device $dev to thread
  58     [ -z "$APPEND" ] && pg_thread $thread "rem_device_all"
  59     pg_thread $thread "add_device" $dev
  60
  61     # Base config
  62     pg_set $dev "flag QUEUE_MAP_CPU"
  63     pg_set $dev "count $COUNT"
  64     pg_set $dev "clone_skb $CLONE_SKB"
  65     pg_set $dev "pkt_size $PKT_SIZE"
  66     pg_set $dev "delay $DELAY"
  67     pg_set $dev "flag NO_TIMESTAMP"
  68
  69     # Single destination
  70     pg_set $dev "dst_mac $DST_MAC"
  71     pg_set $dev "dst${IP6}_min $DST_MIN"
  72     pg_set $dev "dst${IP6}_max $DST_MAX"
  73
  74     if [ -n "$DST_PORT" ]; then
  75         # Single destination port or random port range
  76         pg_set $dev "flag UDPDST_RND"
  77         pg_set $dev "udp_dst_min $UDP_DST_MIN"
  78         pg_set $dev "udp_dst_max $UDP_DST_MAX"
  79     fi
  80
  81     [ ! -z "$UDP_CSUM" ] && pg_set $dev "flag UDPCSUM"
  82
  83     # Randomize source IP-addresses
  84     pg_set $dev "flag IPSRC_RND"
  85     pg_set $dev "src_min $SRC_MIN"
  86     pg_set $dev "src_max $SRC_MAX"
  87
  88     # Limit number of flows (max 65535)
  89     pg_set $dev "flows $FLOWS"
  90     #
  91     # How many packets a flow will send, before flow "entry" is
  92     # re-generated/setup.
  93     pg_set $dev "flowlen $FLOWLEN"
  94     #
  95     # Flag FLOW_SEQ will cause $FLOWLEN packets from the same flow
  96     # being send back-to-back, before next flow is selected
  97     # incrementally.  This helps lookup caches, and is more realistic.
  98     #
  99     pg_set $dev "flag FLOW_SEQ"
 100
 101 done
 102
 103 # Run if user hits control-c
 104 function print_result() {
 105     # Print results
 106     for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do
 107         dev=${DEV}@${thread}
 108         echo "Device: $dev"
 109         cat /proc/net/pktgen/$dev | grep -A2 "Result:"
 110     done
 111 }
 112 # trap keyboard interrupt (Ctrl-C)
 113 trap true SIGINT
 114
 115 if [ -z "$APPEND" ]; then
 116     echo "Running... ctrl^C to stop" >&2
 117     pg_ctrl "start"
 118
 119     print_result
 120 else
 121     echo "Append mode: config done. Do more or use 'pg_ctrl start' to run"
 122 fi