cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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pktgen_sample06_numa_awared_queue_irq_affinity.sh (3981B)


      1#!/bin/bash
      2#
      3# Multiqueue: Using pktgen threads for sending on multiple CPUs
      4#  * adding devices to kernel threads which are in the same NUMA node
      5#  * bound devices queue's irq affinity to the threads, 1:1 mapping
      6#  * notice the naming scheme for keeping device names unique
      7#  * nameing scheme: dev@thread_number
      8#  * flow variation via random UDP source port
      9#
     10basedir=`dirname $0`
     11source ${basedir}/functions.sh
     12root_check_run_with_sudo "$@"
     13#
     14# Required param: -i dev in $DEV
     15source ${basedir}/parameters.sh
     16
     17# Base Config
     18[ -z "$COUNT" ]     && COUNT="20000000"   # Zero means indefinitely
     19[ -z "$CLONE_SKB" ] && CLONE_SKB="0"
     20
     21# Flow variation random source port between min and max
     22UDP_SRC_MIN=9
     23UDP_SRC_MAX=109
     24
     25node=`get_iface_node $DEV`
     26irq_array=(`get_iface_irqs $DEV`)
     27cpu_array=(`get_node_cpus $node`)
     28
     29[ $THREADS -gt ${#irq_array[*]} -o $THREADS -gt ${#cpu_array[*]}  ] && \
     30	err 1 "Thread number $THREADS exceeds: min (${#irq_array[*]},${#cpu_array[*]})"
     31
     32# (example of setting default params in your script)
     33if [ -z "$DEST_IP" ]; then
     34    [ -z "$IP6" ] && DEST_IP="198.18.0.42" || DEST_IP="FD00::1"
     35fi
     36[ -z "$DST_MAC" ] && DST_MAC="90:e2:ba:ff:ff:ff"
     37if [ -n "$DEST_IP" ]; then
     38    validate_addr${IP6} $DEST_IP
     39    read -r DST_MIN DST_MAX <<< $(parse_addr${IP6} $DEST_IP)
     40fi
     41if [ -n "$DST_PORT" ]; then
     42    read -r UDP_DST_MIN UDP_DST_MAX <<< $(parse_ports $DST_PORT)
     43    validate_ports $UDP_DST_MIN $UDP_DST_MAX
     44fi
     45
     46# General cleanup everything since last run
     47[ -z "$APPEND" ] && pg_ctrl "reset"
     48
     49# Threads are specified with parameter -t value in $THREADS
     50for ((i = 0; i < $THREADS; i++)); do
     51    # The device name is extended with @name, using thread number to
     52    # make then unique, but any name will do.
     53    # Set the queue's irq affinity to this $thread (processor)
     54    # if '-f' is designated, offset cpu id
     55    thread=${cpu_array[$((i+F_THREAD))]}
     56    dev=${DEV}@${thread}
     57    echo $thread > /proc/irq/${irq_array[$i]}/smp_affinity_list
     58    info "irq ${irq_array[$i]} is set affinity to `cat /proc/irq/${irq_array[$i]}/smp_affinity_list`"
     59
     60    # Add remove all other devices and add_device $dev to thread
     61    [ -z "$APPEND" ] && pg_thread $thread "rem_device_all"
     62    pg_thread $thread "add_device" $dev
     63
     64    # select queue and bind the queue and $dev in 1:1 relationship
     65    queue_num=$i
     66    info "queue number is $queue_num"
     67    pg_set $dev "queue_map_min $queue_num"
     68    pg_set $dev "queue_map_max $queue_num"
     69
     70    # Notice config queue to map to cpu (mirrors smp_processor_id())
     71    # It is beneficial to map IRQ /proc/irq/*/smp_affinity 1:1 to CPU number
     72    pg_set $dev "flag QUEUE_MAP_CPU"
     73
     74    # Base config of dev
     75    pg_set $dev "count $COUNT"
     76    pg_set $dev "clone_skb $CLONE_SKB"
     77    pg_set $dev "pkt_size $PKT_SIZE"
     78    pg_set $dev "delay $DELAY"
     79
     80    # Flag example disabling timestamping
     81    pg_set $dev "flag NO_TIMESTAMP"
     82
     83    # Destination
     84    pg_set $dev "dst_mac $DST_MAC"
     85    pg_set $dev "dst${IP6}_min $DST_MIN"
     86    pg_set $dev "dst${IP6}_max $DST_MAX"
     87
     88    if [ -n "$DST_PORT" ]; then
     89	# Single destination port or random port range
     90	pg_set $dev "flag UDPDST_RND"
     91	pg_set $dev "udp_dst_min $UDP_DST_MIN"
     92	pg_set $dev "udp_dst_max $UDP_DST_MAX"
     93    fi
     94
     95    [ ! -z "$UDP_CSUM" ] && pg_set $dev "flag UDPCSUM"
     96
     97    # Setup random UDP port src range
     98    pg_set $dev "flag UDPSRC_RND"
     99    pg_set $dev "udp_src_min $UDP_SRC_MIN"
    100    pg_set $dev "udp_src_max $UDP_SRC_MAX"
    101done
    102
    103# Run if user hits control-c
    104function print_result() {
    105    # Print results
    106    for ((i = 0; i < $THREADS; i++)); do
    107        thread=${cpu_array[$((i+F_THREAD))]}
    108        dev=${DEV}@${thread}
    109        echo "Device: $dev"
    110        cat /proc/net/pktgen/$dev | grep -A2 "Result:"
    111    done
    112}
    113# trap keyboard interrupt (Ctrl-C)
    114trap true SIGINT
    115
    116# start_run
    117if [ -z "$APPEND" ]; then
    118    echo "Running... ctrl^C to stop" >&2
    119    pg_ctrl "start"
    120    echo "Done" >&2
    121
    122    print_result
    123else
    124    echo "Append mode: config done. Do more or use 'pg_ctrl start' to run"
    125fi