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Commit fa7912be authored by David S. Miller's avatar David S. Miller
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Merge branch 'pktgen-new-scripts' 

Jesper Dangaard Brouer says:

====================
pktgen: cleanups and introducing new samples/pktgen scripts

v3:
 - Aborted v2 send due it was not generating diff stat
   (this is a bug in stg-mail, if not in the root directory)

v2: address nitpicks from Cong Wang
 - Remove useless cat's, but keep them for old pgset()
 - Comment on: Due to pgctrl, cannot use exit code $? from grep
 - Use arithmetic compare in pktgen_sample03_burst_single_flow.sh

This patchset is focused on making pktgen easier to use and better
documented. It contains a number of documentation updates and minor
changes to pktgen.  The major contribution is introduction of common
helper function for sample scripts.

Instead of the old pgset() function, three new shell functions for
configuring the different components of pktgen are introduced:
 pg_ctrl(), pg_thread() and pg_set().

The new functions correspond to pktgens different components.
 * pg_ctrl()   control "pgctrl" (/proc/net/pktgen/pgctrl)
 * pg_thread() control the kernel threads and binding to devices
 * pg_set()    control setup of individual devices

Helpers also provide consistent parameter parsing across the sample
scripts.

Usage example:
 ./pktgen_sample01_simple.sh -i eth41 -m 00:12:C0:02:AC:5A -d 192.168.41.2

Usage: ./pktgen_sample01_simple.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

These scripts are borrowed from:
 https://github.com/netoptimizer/network-testing/tree/master/pktgen
====================
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parents fe593844 05a14d5e
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Showing with 678 additions and 242 deletions
Documentation/networking/pktgen.txt
View file @ fa7912be
...@@ -50,17 +50,33 @@ For ixgbe use e.g. "30" resulting in approx 33K interrupts/sec (1/30*10^6): ...@@ -50,17 +50,33 @@ For ixgbe use e.g. "30" resulting in approx 33K interrupts/sec (1/30*10^6):
# ethtool -C ethX rx-usecs 30 # ethtool -C ethX rx-usecs 30
Viewing threads Kernel threads
=============== ==============
/proc/net/pktgen/kpktgend_0 Pktgen creates a thread for each CPU with affinity to that CPU.
Name: kpktgend_0 max_before_softirq: 10000 Which is controlled through procfile /proc/net/pktgen/kpktgend_X.
Running:
Stopped: eth1 Example: /proc/net/pktgen/kpktgend_0
Result: OK: max_before_softirq=10000
Running:
Stopped: eth4@0
Result: OK: add_device=eth4@0
Most important are the devices assigned to the thread.
The two basic thread commands are:
* add_device DEVICE@NAME -- adds a single device
* rem_device_all -- remove all associated devices
Most important are the devices assigned to the thread. Note that a When adding a device to a thread, a corrosponding procfile is created
device can only belong to one thread. which is used for configuring this device. Thus, device names need to
be unique.
To support adding the same device to multiple threads, which is useful
with multi queue NICs, a the device naming scheme is extended with "@":
device@something
The part after "@" can be anything, but it is custom to use the thread
number.
Viewing devices Viewing devices
=============== ===============
...@@ -69,29 +85,32 @@ The Params section holds configured information. The Current section ...@@ -69,29 +85,32 @@ The Params section holds configured information. The Current section
holds running statistics. The Result is printed after a run or after holds running statistics. The Result is printed after a run or after
interruption. Example: interruption. Example:
/proc/net/pktgen/eth1 /proc/net/pktgen/eth4@0
Params: count 10000000 min_pkt_size: 60 max_pkt_size: 60 Params: count 100000 min_pkt_size: 60 max_pkt_size: 60
frags: 0 delay: 0 clone_skb: 1000000 ifname: eth1 frags: 0 delay: 0 clone_skb: 64 ifname: eth4@0
flows: 0 flowlen: 0 flows: 0 flowlen: 0
dst_min: 10.10.11.2 dst_max: queue_map_min: 0 queue_map_max: 0
dst_min: 192.168.81.2 dst_max:
src_min: src_max: src_min: src_max:
src_mac: 00:00:00:00:00:00 dst_mac: 00:04:23:AC:FD:82 src_mac: 90:e2:ba:0a:56:b4 dst_mac: 00:1b:21:3c:9d:f8
udp_src_min: 9 udp_src_max: 9 udp_dst_min: 9 udp_dst_max: 9 udp_src_min: 9 udp_src_max: 109 udp_dst_min: 9 udp_dst_max: 9
src_mac_count: 0 dst_mac_count: 0 src_mac_count: 0 dst_mac_count: 0
Flags: Flags: UDPSRC_RND NO_TIMESTAMP QUEUE_MAP_CPU
Current: Current:
pkts-sofar: 10000000 errors: 39664 pkts-sofar: 100000 errors: 0
started: 1103053986245187us stopped: 1103053999346329us idle: 880401us started: 623913381008us stopped: 623913396439us idle: 25us
seq_num: 10000011 cur_dst_mac_offset: 0 cur_src_mac_offset: 0 seq_num: 100001 cur_dst_mac_offset: 0 cur_src_mac_offset: 0
cur_saddr: 0x10a0a0a cur_daddr: 0x20b0a0a cur_saddr: 192.168.8.3 cur_daddr: 192.168.81.2
cur_udp_dst: 9 cur_udp_src: 9 cur_udp_dst: 9 cur_udp_src: 42
cur_queue_map: 0
flows: 0 flows: 0
Result: OK: 13101142(c12220741+d880401) usec, 10000000 (60byte,0frags) Result: OK: 15430(c15405+d25) usec, 100000 (60byte,0frags)
763292pps 390Mb/sec (390805504bps) errors: 39664 6480562pps 3110Mb/sec (3110669760bps) errors: 0
Configuring threads and devices Configuring devices
================================ ===================
This is done via the /proc interface, and most easily done via pgset This is done via the /proc interface, and most easily done via pgset
as defined in the sample scripts. as defined in the sample scripts.
...@@ -200,21 +219,36 @@ Examples: ...@@ -200,21 +219,36 @@ Examples:
Sample scripts Sample scripts
============== ==============
A collection of small tutorial scripts for pktgen is in the A collection of tutorial scripts and helpers for pktgen is in the
samples/pktgen directory: samples/pktgen directory. The helper parameters.sh file support easy
and consistant parameter parsing across the sample scripts.
Usage example and help:
./pktgen_sample01_simple.sh -i eth4 -m 00:1B:21:3C:9D:F8 -d 192.168.8.2
Usage: ./pktgen_sample01_simple.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
The global variables being set are also listed. E.g. the required
interface/device parameter "-i" sets variable $DEV. Copy the
pktgen_sampleXX scripts and modify them to fit your own needs.
The old scripts:
pktgen.conf-1-1 # 1 CPU 1 dev
pktgen.conf-1-2 # 1 CPU 2 dev pktgen.conf-1-2 # 1 CPU 2 dev
pktgen.conf-2-1 # 2 CPU's 1 dev
pktgen.conf-2-2 # 2 CPU's 2 dev
pktgen.conf-1-1-rdos # 1 CPU 1 dev w. route DoS pktgen.conf-1-1-rdos # 1 CPU 1 dev w. route DoS
pktgen.conf-1-1-ip6 # 1 CPU 1 dev ipv6 pktgen.conf-1-1-ip6 # 1 CPU 1 dev ipv6
pktgen.conf-1-1-ip6-rdos # 1 CPU 1 dev ipv6 w. route DoS pktgen.conf-1-1-ip6-rdos # 1 CPU 1 dev ipv6 w. route DoS
pktgen.conf-1-1-flows # 1 CPU 1 dev multiple flows. pktgen.conf-1-1-flows # 1 CPU 1 dev multiple flows.
Run in shell: ./pktgen.conf-X-Y
This does all the setup including sending.
Interrupt affinity Interrupt affinity
=================== ===================
...@@ -222,6 +256,9 @@ Note that when adding devices to a specific CPU it is a good idea to ...@@ -222,6 +256,9 @@ Note that when adding devices to a specific CPU it is a good idea to
also assign /proc/irq/XX/smp_affinity so that the TX interrupts are bound also assign /proc/irq/XX/smp_affinity so that the TX interrupts are bound
to the same CPU. This reduces cache bouncing when freeing skbs. to the same CPU. This reduces cache bouncing when freeing skbs.
Plus using the device flag QUEUE_MAP_CPU, which maps the SKBs TX queue
to the running threads CPU (directly from smp_processor_id()).
Enable IPsec Enable IPsec
============ ============
Default IPsec transformation with ESP encapsulation plus transport mode Default IPsec transformation with ESP encapsulation plus transport mode
...@@ -242,18 +279,19 @@ Current commands and configuration options ...@@ -242,18 +279,19 @@ Current commands and configuration options
start start
stop stop
reset
** Thread commands: ** Thread commands:
add_device add_device
rem_device_all rem_device_all
max_before_softirq
** Device commands: ** Device commands:
count count
clone_skb clone_skb
burst
debug debug
frags frags
...@@ -266,6 +304,13 @@ pkt_size ...@@ -266,6 +304,13 @@ pkt_size
min_pkt_size min_pkt_size
max_pkt_size max_pkt_size
queue_map_min
queue_map_max
skb_priority
tos (ipv4)
traffic_class (ipv6)
mpls mpls
udp_src_min udp_src_min
...@@ -274,6 +319,8 @@ udp_src_max ...@@ -274,6 +319,8 @@ udp_src_max
udp_dst_min udp_dst_min
udp_dst_max udp_dst_max
node
flag flag
IPSRC_RND IPSRC_RND
IPDST_RND IPDST_RND
...@@ -294,6 +341,8 @@ flag ...@@ -294,6 +341,8 @@ flag
NODE_ALLOC NODE_ALLOC
NO_TIMESTAMP NO_TIMESTAMP
spi (ipsec)
dst_min dst_min
dst_max dst_max
...@@ -305,8 +354,10 @@ src_mac ...@@ -305,8 +354,10 @@ src_mac
clear_counters clear_counters
dst6
src6 src6
dst6
dst6_max
dst6_min
flows flows
flowlen flowlen
...@@ -316,6 +367,14 @@ ratep ...@@ -316,6 +367,14 @@ ratep
xmit_mode <start_xmit|netif_receive> xmit_mode <start_xmit|netif_receive>
vlan_cfi
vlan_id
vlan_p
svlan_cfi
svlan_id
svlan_p
References: References:
ftp://robur.slu.se/pub/Linux/net-development/pktgen-testing/ ftp://robur.slu.se/pub/Linux/net-development/pktgen-testing/
......
net/core/pktgen.c
View file @ fa7912be
...@@ -177,7 +177,7 @@ ...@@ -177,7 +177,7 @@
#include <asm/dma.h> #include <asm/dma.h>
#include <asm/div64.h> /* do_div */ #include <asm/div64.h> /* do_div */
#define VERSION "2.74" #define VERSION "2.75"
#define IP_NAME_SZ 32 #define IP_NAME_SZ 32
#define MAX_MPLS_LABELS 16 /* This is the max label stack depth */ #define MAX_MPLS_LABELS 16 /* This is the max label stack depth */
#define MPLS_STACK_BOTTOM htonl(0x00000100) #define MPLS_STACK_BOTTOM htonl(0x00000100)
...@@ -512,7 +512,7 @@ static ssize_t pgctrl_write(struct file *file, const char __user *buf, ...@@ -512,7 +512,7 @@ static ssize_t pgctrl_write(struct file *file, const char __user *buf,
pktgen_reset_all_threads(pn); pktgen_reset_all_threads(pn);
else else
pr_warn("Unknown command: %s\n", data); return -EINVAL;
return count; return count;
} }
......
samples/pktgen/README.rst 0 → 100644
View file @ fa7912be
Sample and benchmark scripts for pktgen (packet generator)
==========================================================
This directory contains some pktgen sample and benchmark scripts, that
can easily be copied and adjusted for your own use-case.
General doc is located in kernel: Documentation/networking/pktgen.txt
Helper include files
====================
This directory contains two helper shell files, that can be "included"
by shell source'ing. Namely "functions.sh" and "parameters.sh".
Common parameters
-----------------
The parameters.sh file support easy and consistant parameter parsing
across the sample scripts. Usage example is printed on errors::
Usage: ./pktgen_sample01_simple.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
The global variable being set is also listed. E.g. the required
interface/device parameter "-i" sets variable $DEV.
Common functions
----------------
The functions.sh file provides; Three different shell functions for
configuring the different components of pktgen: pg_ctrl(), pg_thread()
and pg_set().
These functions correspond to pktgens different components.
* pg_ctrl() control "pgctrl" (/proc/net/pktgen/pgctrl)
* pg_thread() control the kernel threads and binding to devices
* pg_set() control setup of individual devices
See sample scripts for usage examples.
samples/pktgen/functions.sh 0 → 100644
View file @ fa7912be
#
# Common functions used by pktgen scripts
# - Depending on bash 3 (or higher) syntax
#
# Author: Jesper Dangaaard Brouer
# License: GPL
## -- General shell logging cmds --
function err() {
local exitcode=$1
shift
echo "ERROR: $@" >&2
exit $exitcode
}
function warn() {
echo "WARN : $@" >&2
}
function info() {
if [[ -n "$VERBOSE" ]]; then
echo "INFO : $@" >&2
fi
}
## -- Pktgen proc config commands -- ##
export PROC_DIR=/proc/net/pktgen
#
# Three different shell functions for configuring the different
# components of pktgen:
# pg_ctrl(), pg_thread() and pg_set().
#
# These functions correspond to pktgens different components.
# * pg_ctrl() control "pgctrl" (/proc/net/pktgen/pgctrl)
# * pg_thread() control the kernel threads and binding to devices
# * pg_set() control setup of individual devices
function pg_ctrl() {
local proc_file="pgctrl"
proc_cmd ${proc_file} "$@"
}
function pg_thread() {
local thread=$1
local proc_file="kpktgend_${thread}"
shift
proc_cmd ${proc_file} "$@"
}
function pg_set() {
local dev=$1
local proc_file="$dev"
shift
proc_cmd ${proc_file} "$@"
}
# More generic replacement for pgset(), that does not depend on global
# variable for proc file.
function proc_cmd() {
local result
local proc_file=$1
# after shift, the remaining args are contained in $@
shift
local proc_ctrl=${PROC_DIR}/$proc_file
if [[ ! -e "$proc_ctrl" ]]; then
err 3 "proc file:$proc_ctrl does not exists (dev added to thread?)"
else
if [[ ! -w "$proc_ctrl" ]]; then
err 4 "proc file:$proc_ctrl not writable, not root?!"
fi
fi
if [[ "$DEBUG" == "yes" ]]; then
echo "cmd: $@ > $proc_ctrl"
fi
# Quoting of "$@" is important for space expansion
echo "$@" > "$proc_ctrl"
local status=$?
result=$(grep "Result: OK:" $proc_ctrl)
# Due to pgctrl, cannot use exit code $? from grep
if [[ "$result" == "" ]]; then
grep "Result:" $proc_ctrl >&2
fi
if (( $status != 0 )); then
err 5 "Write error($status) occurred cmd: \"$@ > $proc_ctrl\""
fi
}
# Old obsolete "pgset" function, with slightly improved err handling
function pgset() {
local result
if [[ "$DEBUG" == "yes" ]]; then
echo "cmd: $1 > $PGDEV"
fi
echo $1 > $PGDEV
local status=$?
result=`cat $PGDEV | fgrep "Result: OK:"`
if [[ "$result" == "" ]]; then
cat $PGDEV | fgrep Result:
fi
if (( $status != 0 )); then
err 5 "Write error($status) occurred cmd: \"$1 > $PGDEV\""
fi
}
## -- General shell tricks --
function root_check_run_with_sudo() {
# Trick so, program can be run as normal user, will just use "sudo"
# call as root_check_run_as_sudo "$@"
if [ "$EUID" -ne 0 ]; then
if [ -x $0 ]; then # Directly executable use sudo
info "Not root, running with sudo"
sudo "$0" "$@"
exit $?
fi
err 4 "cannot perform sudo run of $0"
fi
}
samples/pktgen/parameters.sh 0 → 100644
View file @ fa7912be
#
# Common parameter parsing for pktgen scripts
#
function usage() {
echo ""
echo "Usage: $0 [-vx] -i ethX"
echo " -i : (\$DEV) output interface/device (required)"
echo " -s : (\$PKT_SIZE) packet size"
echo " -d : (\$DEST_IP) destination IP"
echo " -m : (\$DST_MAC) destination MAC-addr"
echo " -t : (\$THREADS) threads to start"
echo " -c : (\$SKB_CLONE) SKB clones send before alloc new SKB"
echo " -b : (\$BURST) HW level bursting of SKBs"
echo " -v : (\$VERBOSE) verbose"
echo " -x : (\$DEBUG) debug"
echo ""
}
## --- Parse command line arguments / parameters ---
## echo "Commandline options:"
while getopts "s:i:d:m:t:c:b:vxh" option; do
case $option in
i) # interface
export DEV=$OPTARG
info "Output device set to: DEV=$DEV"
;;
s)
export PKT_SIZE=$OPTARG
info "Packet size set to: PKT_SIZE=$PKT_SIZE bytes"
;;
d) # destination IP
export DEST_IP=$OPTARG
info "Destination IP set to: DEST_IP=$DEST_IP"
;;
m) # MAC
export DST_MAC=$OPTARG
info "Destination MAC set to: DST_MAC=$DST_MAC"
;;
t)
export THREADS=$OPTARG
export CPU_THREADS=$OPTARG
let "CPU_THREADS -= 1"
info "Number of threads to start: $THREADS (0 to $CPU_THREADS)"
;;
c)
export CLONE_SKB=$OPTARG
info "CLONE_SKB=$CLONE_SKB"
;;
b)
export BURST=$OPTARG
info "SKB bursting: BURST=$BURST"
;;
v)
export VERBOSE=yes
info "Verbose mode: VERBOSE=$VERBOSE"
;;
x)
export DEBUG=yes
info "Debug mode: DEBUG=$DEBUG"
;;
h|?|*)
usage;
err 2 "[ERROR] Unknown parameters!!!"
esac
done
shift $(( $OPTIND - 1 ))
if [ -z "$PKT_SIZE" ]; then
# NIC adds 4 bytes CRC
export PKT_SIZE=60
info "Default packet size set to: set to: $PKT_SIZE bytes"
fi
if [ -z "$THREADS" ]; then
# Zero CPU threads means one thread, because CPU numbers are zero indexed
export CPU_THREADS=0
export THREADS=1
fi
if [ -z "$DEV" ]; then
usage
err 2 "Please specify output device"
fi
if [ -z "$DST_MAC" ]; then
warn "Missing destination MAC address"
fi
if [ -z "$DEST_IP" ]; then
warn "Missing destination IP address"
fi
if [ ! -d /proc/net/pktgen ]; then
info "Loading kernel module: pktgen"
modprobe pktgen
fi
samples/pktgen/pktgen.conf-1-1 deleted 100755 → 0
View file @ fe593844
#!/bin/bash
#modprobe pktgen
function pgset() {
local result
echo $1 > $PGDEV
result=`cat $PGDEV | fgrep "Result: OK:"`
if [ "$result" = "" ]; then
cat $PGDEV | fgrep Result:
fi
}
# Config Start Here -----------------------------------------------------------
# thread config
# Each CPU has its own thread. One CPU example. We add eth1.
PGDEV=/proc/net/pktgen/kpktgend_0
echo "Removing all devices"
pgset "rem_device_all"
echo "Adding eth1"
pgset "add_device eth1"
# device config
# delay 0 means maximum speed.
CLONE_SKB="clone_skb 1000000"
# NIC adds 4 bytes CRC
PKT_SIZE="pkt_size 60"
# COUNT 0 means forever
#COUNT="count 0"
COUNT="count 10000000"
DELAY="delay 0"
PGDEV=/proc/net/pktgen/eth1
echo "Configuring $PGDEV"
pgset "$COUNT"
pgset "$CLONE_SKB"
pgset "$PKT_SIZE"
pgset "$DELAY"
pgset "dst 10.10.11.2"
pgset "dst_mac 00:04:23:08:91:dc"
# Time to run
PGDEV=/proc/net/pktgen/pgctrl
echo "Running... ctrl^C to stop"
trap true INT
pgset "start"
echo "Done"
cat /proc/net/pktgen/eth1
samples/pktgen/pktgen.conf-2-1 deleted 100755 → 0
View file @ fe593844
#!/bin/bash
#modprobe pktgen
function pgset() {
local result
echo $1 > $PGDEV
result=`cat $PGDEV | fgrep "Result: OK:"`
if [ "$result" = "" ]; then
cat $PGDEV | fgrep Result:
fi
}
# Config Start Here -----------------------------------------------------------
# thread config
# Each CPU has its own thread. Two CPU example. We add eth1 to the first
# and leave the second idle.
PGDEV=/proc/net/pktgen/kpktgend_0
echo "Removing all devices"
pgset "rem_device_all"
echo "Adding eth1"
pgset "add_device eth1"
# We need to remove old config since we dont use this thread. We can only
# one NIC on one CPU due to affinity reasons.
PGDEV=/proc/net/pktgen/kpktgend_1
echo "Removing all devices"
pgset "rem_device_all"
# device config
# delay 0 means maximum speed.
CLONE_SKB="clone_skb 1000000"
# NIC adds 4 bytes CRC
PKT_SIZE="pkt_size 60"
# COUNT 0 means forever
#COUNT="count 0"
COUNT="count 10000000"
DELAY="delay 0"
PGDEV=/proc/net/pktgen/eth1
echo "Configuring $PGDEV"
pgset "$COUNT"
pgset "$CLONE_SKB"
pgset "$PKT_SIZE"
pgset "$DELAY"
pgset "dst 10.10.11.2"
pgset "dst_mac 00:04:23:08:91:dc"
# Time to run
PGDEV=/proc/net/pktgen/pgctrl
echo "Running... ctrl^C to stop"
trap true INT
pgset "start"
echo "Done"
cat /proc/net/pktgen/eth1
samples/pktgen/pktgen.conf-2-2 deleted 100755 → 0
View file @ fe593844
#!/bin/bash
#modprobe pktgen
function pgset() {
local result
echo $1 > $PGDEV
result=`cat $PGDEV | fgrep "Result: OK:"`
if [ "$result" = "" ]; then
cat $PGDEV | fgrep Result:
fi
}
# Config Start Here -----------------------------------------------------------
# thread config
# Each CPU has its own thread. Two CPU example. We add eth1, eth2 respectively.
PGDEV=/proc/net/pktgen/kpktgend_0
echo "Removing all devices"
pgset "rem_device_all"
echo "Adding eth1"
pgset "add_device eth1"
PGDEV=/proc/net/pktgen/kpktgend_1
echo "Removing all devices"
pgset "rem_device_all"
echo "Adding eth2"
pgset "add_device eth2"
# device config
# delay 0 means maximum speed.
CLONE_SKB="clone_skb 1000000"
# NIC adds 4 bytes CRC
PKT_SIZE="pkt_size 60"
# COUNT 0 means forever
#COUNT="count 0"
COUNT="count 10000000"
DELAY="delay 0"
PGDEV=/proc/net/pktgen/eth1
echo "Configuring $PGDEV"
pgset "$COUNT"
pgset "$CLONE_SKB"
pgset "$PKT_SIZE"
pgset "$DELAY"
pgset "dst 10.10.11.2"
pgset "dst_mac 00:04:23:08:91:dc"
PGDEV=/proc/net/pktgen/eth2
echo "Configuring $PGDEV"
pgset "$COUNT"
pgset "$CLONE_SKB"
pgset "$PKT_SIZE"
pgset "$DELAY"
pgset "dst 192.168.2.2"
pgset "dst_mac 00:04:23:08:91:de"
# Time to run
PGDEV=/proc/net/pktgen/pgctrl
echo "Running... ctrl^C to stop"
trap true INT
pgset "start"
echo "Done"
cat /proc/net/pktgen/eth1 /proc/net/pktgen/eth2
samples/pktgen/pktgen_bench_xmit_mode_netif_receive.sh 0 → 100755
View file @ fa7912be
#!/bin/bash
#
# Benchmark script:
# - developed for benchmarking ingress qdisc path
#
# Script for injecting packets into RX path of the stack with pktgen
# "xmit_mode netif_receive". With an invalid dst_mac this will only
# measure the ingress code path as packets gets dropped in ip_rcv().
#
# This script don't really need any hardware. It benchmarks software
# RX path just after NIC driver level. With bursting is also
# "removes" the SKB alloc/free overhead.
#
# Setup scenarios for measuring ingress qdisc (with invalid dst_mac):
# ------------------------------------------------------------------
# (1) no ingress (uses static_key_false(&ingress_needed))
#
# (2) ingress on other dev (change ingress_needed and calls
# handle_ing() but exit early)
#
# config: tc qdisc add dev $SOMEDEV handle ffff: ingress
#
# (3) ingress on this dev, handle_ing() -> tc_classify()
#
# config: tc qdisc add dev $DEV handle ffff: ingress
#
# (4) ingress on this dev + drop at u32 classifier/action.
#
basedir=`dirname $0`
source ${basedir}/functions.sh
root_check_run_with_sudo "$@"
# Parameter parsing via include
source ${basedir}/parameters.sh
# Using invalid DST_MAC will cause the packets to get dropped in
# ip_rcv() which is part of the test
[ -z "$DEST_IP" ] && DEST_IP="198.18.0.42"
[ -z "$DST_MAC" ] && DST_MAC="90:e2:ba:ff:ff:ff"
[ -z "$BURST" ] && BURST=1024
# Base Config
DELAY="0" # Zero means max speed
COUNT="10000000" # Zero means indefinitely
# 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
# Base config of dev
pg_set $dev "flag QUEUE_MAP_CPU"
pg_set $dev "count $COUNT"
pg_set $dev "pkt_size $PKT_SIZE"
pg_set $dev "delay $DELAY"
pg_set $dev "flag NO_TIMESTAMP"
# Destination
pg_set $dev "dst_mac $DST_MAC"
pg_set $dev "dst $DEST_IP"
# Inject packet into RX path of stack
pg_set $dev "xmit_mode netif_receive"
# Burst allow us to avoid measuring SKB alloc/free overhead
pg_set $dev "burst $BURST"
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
samples/pktgen/pktgen_sample01_simple.sh 0 → 100755
View file @ fa7912be
#!/bin/bash
#
# Simple example:
# * pktgen sending with single thread and single interface
# * flow variation via random UDP source port
#
basedir=`dirname $0`
source ${basedir}/functions.sh
root_check_run_with_sudo "$@"
# Parameter parsing via include
# - go look in parameters.sh to see which setting are avail
# - required param is the interface "-i" stored in $DEV
source ${basedir}/parameters.sh
#
# Set some default params, if they didn't get set
[ -z "$DEST_IP" ] && DEST_IP="198.18.0.42"
[ -z "$CLONE_SKB" ] && CLONE_SKB="0"
# Example enforce param "-m" for dst_mac
[ -z "$DST_MAC" ] && usage && err 2 "Must specify -m dst_mac"
# Base Config
DELAY="0" # Zero means max speed
COUNT="100000" # Zero means indefinitely
# Flow variation random source port between min and max
UDP_MIN=9
UDP_MAX=109
# General cleanup everything since last run
# (especially important if other threads were configured by other scripts)
pg_ctrl "reset"
# Add remove all other devices and add_device $DEV to thread 0
thread=0
pg_thread $thread "rem_device_all"
pg_thread $thread "add_device" $DEV
# How many packets to send (zero means indefinitely)
pg_set $DEV "count $COUNT"
# Reduce alloc cost by sending same SKB many times
# - this obviously affects the randomness within the packet
pg_set $DEV "clone_skb $CLONE_SKB"
# Set packet size
pg_set $DEV "pkt_size $PKT_SIZE"
# Delay between packets (zero means max speed)
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"
# start_run
echo "Running... ctrl^C to stop" >&2
pg_ctrl "start"
echo "Done" >&2
# Print results
echo "Result device: $DEV"
cat /proc/net/pktgen/$DEV
samples/pktgen/pktgen_sample02_multiqueue.sh 0 → 100755
View file @ fa7912be
#!/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
samples/pktgen/pktgen_sample03_burst_single_flow.sh 0 → 100755
View file @ fa7912be
#!/bin/bash
#
# Script for max single flow performance
# - If correctly tuned[1], single CPU 10G wirespeed small pkts is possible[2]
#
# Using pktgen "burst" option (use -b $N)
# - To boost max performance
# - Avail since: kernel v3.18
# * commit 38b2cf2982dc73 ("net: pktgen: packet bursting via skb->xmit_more")
# - This avoids writing the HW tailptr on every driver xmit
# - The performance boost is impressive, see commit and blog [2]
#
# Notice: On purpose generates a single (UDP) flow towards target,
# reason behind this is to only overload/activate a single CPU on
# target host. And no randomness for pktgen also makes it faster.
#
# Tuning see:
# [1] http://netoptimizer.blogspot.dk/2014/06/pktgen-for-network-overload-testing.html
# [2] http://netoptimizer.blogspot.dk/2014/10/unlocked-10gbps-tx-wirespeed-smallest.html
#
basedir=`dirname $0`
source ${basedir}/functions.sh
root_check_run_with_sudo "$@"
# Parameter parsing via include
source ${basedir}/parameters.sh
# Set some default params, if they didn't get set
[ -z "$DEST_IP" ] && DEST_IP="198.18.0.42"
[ -z "$DST_MAC" ] && DST_MAC="90:e2:ba:ff:ff:ff"
[ -z "$BURST" ] && BURST=32
[ -z "$CLONE_SKB" ] && CLONE_SKB="100000"
# Base Config
DELAY="0" # Zero means max speed
COUNT="0" # Zero means indefinitely
# General cleanup everything since last run
pg_ctrl "reset"
# Threads are specified with parameter -t value in $THREADS
for ((thread = 0; thread < $THREADS; thread++)); do
dev=${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
# Base config
pg_set $dev "flag QUEUE_MAP_CPU"
pg_set $dev "count $COUNT"
pg_set $dev "clone_skb $CLONE_SKB"
pg_set $dev "pkt_size $PKT_SIZE"
pg_set $dev "delay $DELAY"
pg_set $dev "flag NO_TIMESTAMP"
# Destination
pg_set $dev "dst_mac $DST_MAC"
pg_set $dev "dst $DEST_IP"
# Setup burst, for easy testing -b 0 disable bursting
# (internally in pktgen default and minimum burst=1)
if [[ ${BURST} -ne 0 ]]; then
pg_set $dev "burst $BURST"
else
info "$dev: Not using burst"
fi
done
# Run if user hits control-c
function control_c() {
# Print results
for ((thread = 0; thread < $THREADS; thread++)); do
dev=${DEV}@${thread}
echo "Device: $dev"
cat /proc/net/pktgen/$dev | grep -A2 "Result:"
done
}
# trap keyboard interrupt (Ctrl-C)
trap control_c SIGINT
echo "Running... ctrl^C to stop" >&2
pg_ctrl "start"
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