mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-05 01:54:09 +08:00
40f843ee5e
Currently, kernel pktgen has the feature to specify destination
address range for sending packet. (e.g. pgset "dst_min/dst_max")
But on samples, each pktgen script doesn't have any option to achieve this.
This commit adds the feature to specify the destination address range with CIDR.
-d : ($DEST_IP) destination IP. CIDR (e.g. 198.18.0.0/15) is also allowed
# ./pktgen_sample01_simple.sh -6 -d fe80::20/126 -p 3000 -n 4
# tcpdump ip6 and udp
05:14:18.082285 IP6 fe80::99.71 > fe80::23.3000: UDP, length 16
05:14:18.082564 IP6 fe80::99.43 > fe80::23.3000: UDP, length 16
05:14:18.083366 IP6 fe80::99.107 > fe80::22.3000: UDP, length 16
05:14:18.083585 IP6 fe80::99.97 > fe80::21.3000: UDP, length 16
Signed-off-by: Daniel T. Lee <danieltimlee@gmail.com>
Acked-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
96 lines
2.7 KiB
Bash
Executable File
96 lines
2.7 KiB
Bash
Executable File
#!/bin/bash
|
|
# SPDX-License-Identifier: GPL-2.0
|
|
#
|
|
# Multiqueue: Using pktgen threads for sending on multiple CPUs
|
|
# * adding devices to kernel threads
|
|
# * notice the naming scheme for keeping device names unique
|
|
# * nameing scheme: dev@thread_number
|
|
# * flow variation via random UDP source port
|
|
#
|
|
basedir=`dirname $0`
|
|
source ${basedir}/functions.sh
|
|
root_check_run_with_sudo "$@"
|
|
#
|
|
# Required param: -i dev in $DEV
|
|
source ${basedir}/parameters.sh
|
|
|
|
[ -z "$COUNT" ] && COUNT="100000" # Zero means indefinitely
|
|
|
|
# Base Config
|
|
DELAY="0" # Zero means max speed
|
|
[ -z "$CLONE_SKB" ] && CLONE_SKB="0"
|
|
|
|
# Flow variation random source port between min and max
|
|
UDP_SRC_MIN=9
|
|
UDP_SRC_MAX=109
|
|
|
|
# (example of setting default params in your script)
|
|
if [ -z "$DEST_IP" ]; then
|
|
[ -z "$IP6" ] && DEST_IP="198.18.0.42" || DEST_IP="FD00::1"
|
|
fi
|
|
[ -z "$DST_MAC" ] && DST_MAC="90:e2:ba:ff:ff:ff"
|
|
if [ -n "$DEST_IP" ]; then
|
|
validate_addr${IP6} $DEST_IP
|
|
read -r DST_MIN DST_MAX <<< $(parse_addr${IP6} $DEST_IP)
|
|
fi
|
|
if [ -n "$DST_PORT" ]; then
|
|
read -r UDP_DST_MIN UDP_DST_MAX <<< $(parse_ports $DST_PORT)
|
|
validate_ports $UDP_DST_MIN $UDP_DST_MAX
|
|
fi
|
|
|
|
# General cleanup everything since last run
|
|
pg_ctrl "reset"
|
|
|
|
# Threads are specified with parameter -t value in $THREADS
|
|
for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do
|
|
# The device name is extended with @name, using thread number to
|
|
# make then unique, but any name will do.
|
|
dev=${DEV}@${thread}
|
|
|
|
# Add remove all other devices and add_device $dev to thread
|
|
pg_thread $thread "rem_device_all"
|
|
pg_thread $thread "add_device" $dev
|
|
|
|
# Notice config queue to map to cpu (mirrors smp_processor_id())
|
|
# It is beneficial to map IRQ /proc/irq/*/smp_affinity 1:1 to CPU number
|
|
pg_set $dev "flag QUEUE_MAP_CPU"
|
|
|
|
# Base config of dev
|
|
pg_set $dev "count $COUNT"
|
|
pg_set $dev "clone_skb $CLONE_SKB"
|
|
pg_set $dev "pkt_size $PKT_SIZE"
|
|
pg_set $dev "delay $DELAY"
|
|
|
|
# Flag example disabling timestamping
|
|
pg_set $dev "flag NO_TIMESTAMP"
|
|
|
|
# Destination
|
|
pg_set $dev "dst_mac $DST_MAC"
|
|
pg_set $dev "dst${IP6}_min $DST_MIN"
|
|
pg_set $dev "dst${IP6}_max $DST_MAX"
|
|
|
|
if [ -n "$DST_PORT" ]; then
|
|
# Single destination port or random port range
|
|
pg_set $dev "flag UDPDST_RND"
|
|
pg_set $dev "udp_dst_min $UDP_DST_MIN"
|
|
pg_set $dev "udp_dst_max $UDP_DST_MAX"
|
|
fi
|
|
|
|
# Setup random UDP port src range
|
|
pg_set $dev "flag UDPSRC_RND"
|
|
pg_set $dev "udp_src_min $UDP_SRC_MIN"
|
|
pg_set $dev "udp_src_max $UDP_SRC_MAX"
|
|
done
|
|
|
|
# start_run
|
|
echo "Running... ctrl^C to stop" >&2
|
|
pg_ctrl "start"
|
|
echo "Done" >&2
|
|
|
|
# Print results
|
|
for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do
|
|
dev=${DEV}@${thread}
|
|
echo "Device: $dev"
|
|
cat /proc/net/pktgen/$dev | grep -A2 "Result:"
|
|
done
|