samples/pktgen/pktgen_sample02_multiqueue.sh

   1 #!/bin/bash
   2 #
   3 # Multiqueue: Using pktgen threads for sending on multiple CPUs
   4 #  * adding devices to kernel threads
   5 #  * notice the naming scheme for keeping device names unique
   6 #  * nameing scheme: dev@thread_number
   7 #  * flow variation via random UDP source port
   8 #
   9 basedir=`dirname $0`
  10 source ${basedir}/functions.sh
  11 root_check_run_with_sudo "$@"
  12 #
  13 # Required param: -i dev in $DEV
  14 source ${basedir}/parameters.sh
  15
  16 # Base Config
  17 DELAY="0"        # Zero means max speed
  18 COUNT="100000"   # Zero means indefinitely
  19 [ -z "$CLONE_SKB" ] && CLONE_SKB="0"
  20
  21 # Flow variation random source port between min and max
  22 UDP_MIN=9
  23 UDP_MAX=109
  24
  25 # (example of setting default params in your script)
  26 if [ -z "$DEST_IP" ]; then
  27     [ -z "$IP6" ] && DEST_IP="198.18.0.42" || DEST_IP="FD00::1"
  28 fi
  29 [ -z "$DST_MAC" ] && DST_MAC="90:e2:ba:ff:ff:ff"
  30
  31 # General cleanup everything since last run
  32 pg_ctrl "reset"
  33
  34 # Threads are specified with parameter -t value in $THREADS
  35 for ((thread = 0; thread < $THREADS; thread++)); do
  36     # The device name is extended with @name, using thread number to
  37     # make then unique, but any name will do.
  38     dev=${DEV}@${thread}
  39
  40     # Add remove all other devices and add_device $dev to thread
  41     pg_thread $thread "rem_device_all"
  42     pg_thread $thread "add_device" $dev
  43
  44     # Notice config queue to map to cpu (mirrors smp_processor_id())
  45     # It is beneficial to map IRQ /proc/irq/*/smp_affinity 1:1 to CPU number
  46     pg_set $dev "flag QUEUE_MAP_CPU"
  47
  48     # Base config of dev
  49     pg_set $dev "count $COUNT"
  50     pg_set $dev "clone_skb $CLONE_SKB"
  51     pg_set $dev "pkt_size $PKT_SIZE"
  52     pg_set $dev "delay $DELAY"
  53
  54     # Flag example disabling timestamping
  55     pg_set $dev "flag NO_TIMESTAMP"
  56
  57     # Destination
  58     pg_set $dev "dst_mac $DST_MAC"
  59     pg_set $dev "dst$IP6 $DEST_IP"
  60
  61     # Setup random UDP port src range
  62     pg_set $dev "flag UDPSRC_RND"
  63     pg_set $dev "udp_src_min $UDP_MIN"
  64     pg_set $dev "udp_src_max $UDP_MAX"
  65 done
  66
  67 # start_run
  68 echo "Running... ctrl^C to stop" >&2
  69 pg_ctrl "start"
  70 echo "Done" >&2
  71
  72 # Print results
  73 for ((thread = 0; thread < $THREADS; thread++)); do
  74     dev=${DEV}@${thread}
  75     echo "Device: $dev"
  76     cat /proc/net/pktgen/$dev | grep -A2 "Result:"
  77 done