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samples: pktgen: new append mode

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To configure various complex flows we for sure can create custom
pktgen init scripts, but sometimes thats not that easy.

New "-a" (append) option in all the existing sample scripts allows
to append more "devices" into pktgen threads.

The most straightforward usecases for that are:
- using multiple devices. We have to generate full linerate on
all physical functions (ports) of our multiport device.
- pushing multiple flows (with different packet options)

Signed-off-by: Igor Russkikh <irusskikh@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Igor Russkikh 2021-03-11 11:32:53 +01:00 committed by David S. Miller
parent ef700f2ea2
commit c8fd485202
9 changed files with 100 additions and 49 deletions
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17
samples/pktgen/README.rst
View File

@ -28,11 +28,28 @@ across the sample scripts. Usage example is printed on errors::
-b : ($BURST) HW level bursting of SKBs
-v : ($VERBOSE) verbose
-x : ($DEBUG) debug
-6 : ($IP6) IPv6
-w : ($DELAY) Tx Delay value (ns)
-a : ($APPEND) Script will not reset generator's state, but will append its config
The global variable being set is also listed. E.g. the required
interface/device parameter "-i" sets variable $DEV.
"-a" parameter may be used to create different flows simultaneously.
In this mode script will keep the existing config, will append its settings.
In this mode you'll have to manually run traffic with "pg_ctrl start".
For example you may use:
source ./samples/pktgen/functions.sh
pg_ctrl reset
# add first device
./pktgen_sample06_numa_awared_queue_irq_affinity.sh -a -i ens1f0 -m 34:80:0d:a3:fc:c9 -t 8
# add second device
./pktgen_sample06_numa_awared_queue_irq_affinity.sh -a -i ens1f1 -m 34:80:0d:a3:fc:c9 -t 8
# run joint traffic on two devs
pg_ctrl start
Common functions
----------------
The functions.sh file provides; Three different shell functions for

7
samples/pktgen/functions.sh
View File

@ -108,7 +108,12 @@ function pgset() {
fi
}
[[ $EUID -eq 0 ]] && trap 'pg_ctrl "reset"' EXIT
if [[ -z "$APPEND" ]]; then
if [[ $EUID -eq 0 ]]; then
# Cleanup pktgen setup on exit if thats not "append mode"
trap 'pg_ctrl "reset"' EXIT
fi
fi
## -- General shell tricks --

7
samples/pktgen/parameters.sh
View File

@ -20,12 +20,13 @@ function usage() {
echo " -x : (\$DEBUG) debug"
echo " -6 : (\$IP6) IPv6"
echo " -w : (\$DELAY) Tx Delay value (ns)"
echo " -a : (\$APPEND) Script will not reset generator's state, but will append its config"
echo ""
}
## --- Parse command line arguments / parameters ---
## echo "Commandline options:"
while getopts "s:i:d:m:p:f:t:c:n:b:w:vxh6" option; do
while getopts "s:i:d:m:p:f:t:c:n:b:w:vxh6a" option; do
case $option in
i) # interface
export DEV=$OPTARG
@ -83,6 +84,10 @@ while getopts "s:i:d:m:p:f:t:c:n:b:w:vxh6" option; do
export IP6=6
info "IP6: IP6=$IP6"
;;
a)
export APPEND=yes
info "Append mode: APPEND=$APPEND"
;;
h|?|*)
usage;
err 2 "[ERROR] Unknown parameters!!!"

8
samples/pktgen/pktgen_sample01_simple.sh
View File

@ -37,11 +37,11 @@ UDP_SRC_MAX=109
# General cleanup everything since last run
# (especially important if other threads were configured by other scripts)
pg_ctrl "reset"
[ -z "$APPEND" ] && pg_ctrl "reset"
# Add remove all other devices and add_device $DEV to thread 0
thread=0
pg_thread $thread "rem_device_all"
[ -z "$APPEND" ] && pg_thread $thread "rem_device_all"
pg_thread $thread "add_device" $DEV
# How many packets to send (zero means indefinitely)
@ -77,6 +77,7 @@ pg_set $DEV "flag UDPSRC_RND"
pg_set $DEV "udp_src_min $UDP_SRC_MIN"
pg_set $DEV "udp_src_max $UDP_SRC_MAX"
if [ -z "$APPEND" ]; then
# start_run
echo "Running... ctrl^C to stop" >&2
pg_ctrl "start"
@ -85,3 +86,6 @@ echo "Done" >&2
# Print results
echo "Result device: $DEV"
cat /proc/net/pktgen/$DEV
else
echo "Append mode: config done. Do more or use 'pg_ctrl start' to run"
fi

8
samples/pktgen/pktgen_sample02_multiqueue.sh
View File

@ -38,7 +38,7 @@ if [ -n "$DST_PORT" ]; then
fi
# General cleanup everything since last run
pg_ctrl "reset"
[ -z "$APPEND" ] && pg_ctrl "reset"
# Threads are specified with parameter -t value in $THREADS
for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do
@ -47,7 +47,7 @@ for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do
dev=${DEV}@${thread}
# Add remove all other devices and add_device $dev to thread
pg_thread $thread "rem_device_all"
[ -z "$APPEND" ] && pg_thread $thread "rem_device_all"
pg_thread $thread "add_device" $dev
# Notice config queue to map to cpu (mirrors smp_processor_id())
@ -81,6 +81,7 @@ for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do
pg_set $dev "udp_src_max $UDP_SRC_MAX"
done
if [ -z "$APPEND" ]; then
# start_run
echo "Running... ctrl^C to stop" >&2
pg_ctrl "start"
@ -92,3 +93,6 @@ for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do
echo "Device: $dev"
cat /proc/net/pktgen/$dev | grep -A2 "Result:"
done
else
echo "Append mode: config done. Do more or use 'pg_ctrl start' to run"
fi

8
samples/pktgen/pktgen_sample03_burst_single_flow.sh
View File

@ -43,14 +43,14 @@ if [ -n "$DST_PORT" ]; then
fi
# General cleanup everything since last run
pg_ctrl "reset"
[ -z "$APPEND" ] && pg_ctrl "reset"
# Threads are specified with parameter -t value in $THREADS
for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do
dev=${DEV}@${thread}
# Add remove all other devices and add_device $dev to thread
pg_thread $thread "rem_device_all"
[ -z "$APPEND" ] && pg_thread $thread "rem_device_all"
pg_thread $thread "add_device" $dev
# Base config
@ -94,5 +94,9 @@ function control_c() {
# trap keyboard interrupt (Ctrl-C)
trap control_c SIGINT
if [ -z "$APPEND" ]; then
echo "Running... ctrl^C to stop" >&2
pg_ctrl "start"
else
echo "Append mode: config done. Do more or use 'pg_ctrl start' to run"
fi

8
samples/pktgen/pktgen_sample04_many_flows.sh
View File

@ -42,14 +42,14 @@ fi
read -r SRC_MIN SRC_MAX <<< $(parse_addr 198.18.0.0/15)
# General cleanup everything since last run
pg_ctrl "reset"
[ -z "$APPEND" ] && pg_ctrl "reset"
# Threads are specified with parameter -t value in $THREADS
for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do
dev=${DEV}@${thread}
# Add remove all other devices and add_device $dev to thread
pg_thread $thread "rem_device_all"
[ -z "$APPEND" ] && pg_thread $thread "rem_device_all"
pg_thread $thread "add_device" $dev
# Base config
@ -104,7 +104,11 @@ function print_result() {
# trap keyboard interrupt (Ctrl-C)
trap true SIGINT
if [ -z "$APPEND" ]; then
echo "Running... ctrl^C to stop" >&2
pg_ctrl "start"
print_result
else
echo "Append mode: config done. Do more or use 'pg_ctrl start' to run"
fi

8
samples/pktgen/pktgen_sample05_flow_per_thread.sh
View File

@ -32,14 +32,14 @@ if [ -n "$DST_PORT" ]; then
fi
# General cleanup everything since last run
pg_ctrl "reset"
[ -z "$APPEND" ] && pg_ctrl "reset"
# Threads are specified with parameter -t value in $THREADS
for ((thread = $F_THREAD; thread <= $L_THREAD; thread++)); do
dev=${DEV}@${thread}
# Add remove all other devices and add_device $dev to thread
pg_thread $thread "rem_device_all"
[ -z "$APPEND" ] && pg_thread $thread "rem_device_all"
pg_thread $thread "add_device" $dev
# Base config
@ -88,7 +88,11 @@ function print_result() {
# trap keyboard interrupt (Ctrl-C)
trap true SIGINT
if [ -z "$APPEND" ]; then
echo "Running... ctrl^C to stop" >&2
pg_ctrl "start"
print_result
else
echo "Append mode: config done. Do more or use 'pg_ctrl start' to run"
fi

8
samples/pktgen/pktgen_sample06_numa_awared_queue_irq_affinity.sh
View File

@ -44,7 +44,7 @@ if [ -n "$DST_PORT" ]; then
fi
# General cleanup everything since last run
pg_ctrl "reset"
[ -z "$APPEND" ] && pg_ctrl "reset"
# Threads are specified with parameter -t value in $THREADS
for ((i = 0; i < $THREADS; i++)); do
@ -58,7 +58,7 @@ for ((i = 0; i < $THREADS; i++)); do
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
pg_thread $thread "rem_device_all"
[ -z "$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
@ -99,6 +99,7 @@ for ((i = 0; i < $THREADS; i++)); do
done
# start_run
if [ -z "$APPEND" ]; then
echo "Running... ctrl^C to stop" >&2
pg_ctrl "start"
echo "Done" >&2
@ -110,3 +111,6 @@ for ((i = 0; i < $THREADS; i++)); do
echo "Device: $dev"
cat /proc/net/pktgen/$dev | grep -A2 "Result:"
done
else
echo "Append mode: config done. Do more or use 'pg_ctrl start' to run"
fi