linux/samples/pktgen
Juhee Kang 6c882bdc4b samples: pktgen: add trap SIGINT for printing execution result
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>
2021-08-25 13:44:30 +01:00
..
functions.sh samples: pktgen: pass the environment variable of normal user to sudo 2021-08-16 11:02:09 +01:00
parameters.sh samples: pktgen: add UDP tx checksum support 2021-05-28 14:52:13 -07:00
pktgen_bench_xmit_mode_netif_receive.sh samples: pktgen: add trap SIGINT for printing execution result 2021-08-25 13:44:30 +01:00
pktgen_bench_xmit_mode_queue_xmit.sh samples: pktgen: add trap SIGINT for printing execution result 2021-08-25 13:44:30 +01:00
pktgen_sample01_simple.sh samples: pktgen: add trap SIGINT for printing execution result 2021-08-25 13:44:30 +01:00
pktgen_sample02_multiqueue.sh samples: pktgen: add trap SIGINT for printing execution result 2021-08-25 13:44:30 +01:00
pktgen_sample03_burst_single_flow.sh samples: pktgen: fix to print when terminated normally 2021-08-25 13:44:30 +01:00
pktgen_sample04_many_flows.sh samples: pktgen: add missing IPv6 option to pktgen scripts 2021-08-16 11:02:09 +01:00
pktgen_sample05_flow_per_thread.sh samples: pktgen: add missing IPv6 option to pktgen scripts 2021-08-16 11:02:09 +01:00
pktgen_sample06_numa_awared_queue_irq_affinity.sh samples: pktgen: add trap SIGINT for printing execution result 2021-08-25 13:44:30 +01:00
README.rst samples: pktgen: new append mode 2021-03-14 14:22:38 -07:00

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.rst

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 : ($DEST_IP)   destination IP. CIDR (e.g. 198.18.0.0/15) is also allowed
  -m : ($DST_MAC)   destination MAC-addr
  -p : ($DST_PORT)  destination PORT range (e.g. 433-444) is also allowed
  -t : ($THREADS)   threads to start
  -f : ($F_THREAD)  index of first thread (zero indexed CPU number)
  -c : ($SKB_CLONE) SKB clones send before alloc new SKB
  -n : ($COUNT)     num messages to send per thread, 0 means indefinitely
  -b : ($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
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.