282fb58947
Add the pktgen samples script pktgen_sample02_multiqueue.sh that demonstrates generating packets on multiqueue NICs. Specifically notice the options "-t" that specifies how many kernel threads to activate. Also notice the flag QUEUE_MAP_CPU, which cause the SKB TX queue to be mapped to the CPU running the kernel thread. For best scalability people are also encourage to map NIC IRQ /proc/irq/*/smp_affinity to CPU number. Usage example with "-t" 4 threads and help: ./pktgen_sample02_multiqueue.sh -i eth4 -m 00:1B:21:3C:9D:F8 -t 4 Usage: ./pktgen_sample02_multiqueue.sh [-vx] -i ethX -i : ($DEV) output interface/device (required) -s : ($PKT_SIZE) packet size -d : ($DEST_IP) destination IP -m : ($DST_MAC) destination MAC-addr -t : ($THREADS) threads to start -c : ($SKB_CLONE) SKB clones send before alloc new SKB -b : ($BURST) HW level bursting of SKBs -v : ($VERBOSE) verbose -x : ($DEBUG) debug Removing pktgen.conf-2-1 and pktgen.conf-2-2 as these examples should be covered now. Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
76 lines
2.1 KiB
Bash
Executable file
76 lines
2.1 KiB
Bash
Executable file
#!/bin/bash
|
|
#
|
|
# 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 ${basedir}/parameters.sh
|
|
|
|
# Base Config
|
|
DELAY="0" # Zero means max speed
|
|
COUNT="100000" # Zero means indefinitely
|
|
[ -z "$CLONE_SKB" ] && CLONE_SKB="0"
|
|
|
|
# Flow variation random source port between min and max
|
|
UDP_MIN=9
|
|
UDP_MAX=109
|
|
|
|
# (example of setting default params in your script)
|
|
[ -z "$DEST_IP" ] && DEST_IP="198.18.0.42"
|
|
[ -z "$DST_MAC" ] && DST_MAC="90:e2:ba:ff:ff:ff"
|
|
|
|
# General cleanup everything since last run
|
|
pg_ctrl "reset"
|
|
|
|
# Threads are specified with parameter -t value in $THREADS
|
|
for ((thread = 0; thread < $THREADS; thread++)); do
|
|
# The device name is extended with @name, using thread number to
|
|
# make then unique, but any name will do.
|
|
dev=${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 $DEST_IP"
|
|
|
|
# Setup random UDP port src range
|
|
pg_set $dev "flag UDPSRC_RND"
|
|
pg_set $dev "udp_src_min $UDP_MIN"
|
|
pg_set $dev "udp_src_max $UDP_MAX"
|
|
done
|
|
|
|
# start_run
|
|
echo "Running... ctrl^C to stop" >&2
|
|
pg_ctrl "start"
|
|
echo "Done" >&2
|
|
|
|
# Print results
|
|
for ((thread = 0; thread < $THREADS; thread++)); do
|
|
dev=${DEV}@${thread}
|
|
echo "Device: $dev"
|
|
cat /proc/net/pktgen/$dev | grep -A2 "Result:"
|
|
done
|