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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>
65 lines
2.6 KiB
ReStructuredText
65 lines
2.6 KiB
ReStructuredText
Sample and benchmark scripts for pktgen (packet generator)
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==========================================================
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This directory contains some pktgen sample and benchmark scripts, that
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can easily be copied and adjusted for your own use-case.
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General doc is located in kernel: Documentation/networking/pktgen.rst
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Helper include files
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====================
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This directory contains two helper shell files, that can be "included"
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by shell source'ing. Namely "functions.sh" and "parameters.sh".
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Common parameters
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-----------------
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The parameters.sh file support easy and consistant parameter parsing
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across the sample scripts. Usage example is printed on errors::
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Usage: ./pktgen_sample01_simple.sh [-vx] -i ethX
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-i : ($DEV) output interface/device (required)
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-s : ($PKT_SIZE) packet size
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-d : ($DEST_IP) destination IP. CIDR (e.g. 198.18.0.0/15) is also allowed
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-m : ($DST_MAC) destination MAC-addr
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-p : ($DST_PORT) destination PORT range (e.g. 433-444) is also allowed
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-t : ($THREADS) threads to start
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-f : ($F_THREAD) index of first thread (zero indexed CPU number)
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-c : ($SKB_CLONE) SKB clones send before alloc new SKB
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-n : ($COUNT) num messages to send per thread, 0 means indefinitely
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-b : ($BURST) HW level bursting of SKBs
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-v : ($VERBOSE) verbose
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-x : ($DEBUG) debug
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-6 : ($IP6) IPv6
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-w : ($DELAY) Tx Delay value (ns)
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-a : ($APPEND) Script will not reset generator's state, but will append its config
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The global variable being set is also listed. E.g. the required
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interface/device parameter "-i" sets variable $DEV.
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"-a" parameter may be used to create different flows simultaneously.
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In this mode script will keep the existing config, will append its settings.
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In this mode you'll have to manually run traffic with "pg_ctrl start".
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For example you may use:
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source ./samples/pktgen/functions.sh
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pg_ctrl reset
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# add first device
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./pktgen_sample06_numa_awared_queue_irq_affinity.sh -a -i ens1f0 -m 34:80:0d:a3:fc:c9 -t 8
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# add second device
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./pktgen_sample06_numa_awared_queue_irq_affinity.sh -a -i ens1f1 -m 34:80:0d:a3:fc:c9 -t 8
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# run joint traffic on two devs
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pg_ctrl start
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Common functions
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----------------
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The functions.sh file provides; Three different shell functions for
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configuring the different components of pktgen: pg_ctrl(), pg_thread()
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and pg_set().
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These functions correspond to pktgens different components.
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* pg_ctrl() control "pgctrl" (/proc/net/pktgen/pgctrl)
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* pg_thread() control the kernel threads and binding to devices
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* pg_set() control setup of individual devices
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See sample scripts for usage examples.
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