mirror of
https://github.com/torvalds/linux.git
synced 2024-11-25 05:32:00 +00:00
6c882bdc4b
All pktgen samples can send indefinitely num messages per thread by
setting the count option to 0(-n 0). If running sample with setting
count 0 and press Ctrl-C to stop this program, the program prints the
result of the execution so far. Currently, the samples besides
sample{3...5} don't work properly. Because Ctrl-C stops the script, not
just pktgen.
This is results of samples:
# DEV=eth0 DEST_IP=10.1.0.1 DST_MAC=00:11:22:33:44:55 ./pktgen_sample04_many_flows.sh -n 0
Running... ctrl^C to stop
^CDevice: eth0@0
Result: OK: 569657(c569538+d118) usec, 84650 (60byte,0frags)
148597pps 71Mb/sec (71326560bps) errors: 0
# DEV=eth0 DEST_IP=10.1.0.1 DST_MAC=00:11:22:33:44:55 ./pktgen_sample01_simple.sh -n 0
Running... ctrl^C to stop
^C
In order to solve this, this commit adds trap SIGINT. Also, this commit
changes control_c function to print_result to maintain consistency with
other samples.
Signed-off-by: Juhee Kang <claudiajkang@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
126 lines
3.9 KiB
Bash
Executable File
126 lines
3.9 KiB
Bash
Executable File
#!/bin/bash
|
|
#
|
|
# Multiqueue: Using pktgen threads for sending on multiple CPUs
|
|
# * adding devices to kernel threads which are in the same NUMA node
|
|
# * bound devices queue's irq affinity to the threads, 1:1 mapping
|
|
# * 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 ${basedir}/parameters.sh
|
|
|
|
# Base Config
|
|
[ -z "$COUNT" ] && COUNT="20000000" # Zero means indefinitely
|
|
[ -z "$CLONE_SKB" ] && CLONE_SKB="0"
|
|
|
|
# Flow variation random source port between min and max
|
|
UDP_SRC_MIN=9
|
|
UDP_SRC_MAX=109
|
|
|
|
node=`get_iface_node $DEV`
|
|
irq_array=(`get_iface_irqs $DEV`)
|
|
cpu_array=(`get_node_cpus $node`)
|
|
|
|
[ $THREADS -gt ${#irq_array[*]} -o $THREADS -gt ${#cpu_array[*]} ] && \
|
|
err 1 "Thread number $THREADS exceeds: min (${#irq_array[*]},${#cpu_array[*]})"
|
|
|
|
# (example of setting default params in your script)
|
|
if [ -z "$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 $UDP_DST_MAX
|
|
fi
|
|
|
|
# General cleanup everything since last run
|
|
[ -z "$APPEND" ] && pg_ctrl "reset"
|
|
|
|
# Threads are specified with parameter -t value in $THREADS
|
|
for ((i = 0; i < $THREADS; i++)); do
|
|
# The device name is extended with @name, using thread number to
|
|
# make then unique, but any name will do.
|
|
# Set the queue's irq affinity to this $thread (processor)
|
|
# if '-f' is designated, offset cpu id
|
|
thread=${cpu_array[$((i+F_THREAD))]}
|
|
dev=${DEV}@${thread}
|
|
echo $thread > /proc/irq/${irq_array[$i]}/smp_affinity_list
|
|
info "irq ${irq_array[$i]} is set affinity to `cat /proc/irq/${irq_array[$i]}/smp_affinity_list`"
|
|
|
|
# Add remove all other devices and add_device $dev to thread
|
|
[ -z "$APPEND" ] && pg_thread $thread "rem_device_all"
|
|
pg_thread $thread "add_device" $dev
|
|
|
|
# select queue and bind the queue and $dev in 1:1 relationship
|
|
queue_num=$i
|
|
info "queue number is $queue_num"
|
|
pg_set $dev "queue_map_min $queue_num"
|
|
pg_set $dev "queue_map_max $queue_num"
|
|
|
|
# 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 $UDP_DST_MAX"
|
|
fi
|
|
|
|
[ ! -z "$UDP_CSUM" ] && pg_set $dev "flag UDPCSUM"
|
|
|
|
# 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
|
|
|
|
# Run if user hits control-c
|
|
function print_result() {
|
|
# Print results
|
|
for ((i = 0; i < $THREADS; i++)); do
|
|
thread=${cpu_array[$((i+F_THREAD))]}
|
|
dev=${DEV}@${thread}
|
|
echo "Device: $dev"
|
|
cat /proc/net/pktgen/$dev | grep -A2 "Result:"
|
|
done
|
|
}
|
|
# trap keyboard interrupt (Ctrl-C)
|
|
trap true SIGINT
|
|
|
|
# start_run
|
|
if [ -z "$APPEND" ]; then
|
|
echo "Running... ctrl^C to stop" >&2
|
|
pg_ctrl "start"
|
|
echo "Done" >&2
|
|
|
|
print_result
|
|
else
|
|
echo "Append mode: config done. Do more or use 'pg_ctrl start' to run"
|
|
fi
|