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