io-sock

Networking manager

Syntax:

io-sock [-o option[,option...]][-d driver [-d driver...]]

Runs on:

QNX Neutrino

Options:

-d driver
Start the specified devs-* driver:
  • You can specify driver without the devs- prefix or the .so extension. For example, to start the devs-em.so driver, specify -d em.
  • If you want to load a specific version of a driver, specify the full path of the module (e.g., /lib/dll/devs-em.so).
-o opt[,opt...]
The opt variable can be any of the following:
prefix
The path to prepend to the default stack location (/dev/socket). This is useful when you want to run multiple stacks. You can use the SOCK environment variable to specify which stack the client should use. For example, if you specify -o prefix=/alt, set SOCK to /alt.
config
The path to a file that contains tunable values. Specify values in the file using the format value_name="value". The file can contain blank lines and comment lines (starting with #). Do not include extra white space in lines that set values.
netisr_threads
The number of netisr (kernel network dispatch service) threads to run. Default is 1. -1 specifies the maximum, which is the number of CPUs.
ignore_usb
Don't load the io-usb bus handler.
ignore_pci
Don't load the pci-server handler.
ignore_phy
Don't load the phy-server handler.
usb_stack
Path to the USB stack. Default is set by the USB library.
bootverbose
Enable verbose boot message logging.
dtb
Specify the path to a Device Tree Blob file.
npnp_pci
Disable Plug and Play for PCI devices.
npnp_ofw
Disable Plug and Play for OFW (Open Firmware Bus) devices.
npnp_usb
Disable Plug and Play for USB devices.
iolevel
Specify the level of I/O privilege.
  • 0 (_NTO_IO_LEVEL_NONE) — Default on AArch64.
  • 1 (_NTO_IO_LEVEL_1) — Default on x86_64.
  • 2 (_NTO_IO_LEVEL_2)
foreground
Stop io-sock from becoming a daemon. Valid only with the diagnostic version of io-sock (io-sock-diag). All logs are still sent to slogger2. For more information, see Running io-sock with diagnostic features.
priority
The io-sock thread priority. Default is 21. For more information, go to Threading model and priorities.

Description:

The io-sock utility is the QNX Neutrino network manager. For more information, go to Starting io-sock and Driver Management.

Configuration file

For the file specified by config:
  • Specify values in the file using the format value_name="value".
  • The file can contain blank lines and comment lines (starting with #).
  • Do not include extra white space in lines that set values.
For descriptions of the values that you can set via this file, in the sysctl entry, go to Tunables.

For example:

# This file can only contain:
# Comment lines beginning with '#'
# Blank lines
# Tunable sysctl with values in '"'

# Example of setting a typed memory region for mbuf allocation
qnx.typed_mem="below4G&sysram"

The command line that starts io-sock and the values read from the configuration file are written to the system logger (slog2), which allows you to obtain the configuration file's location and the values that were present in the file. For example:

Jan 07 09:30:13.095          io_sock.495628                      0  -----ONLINE-----
Jan 07 09:30:13.095          io_sock.495628      main_buffer*    1  io-sock -o config=/etc/io-sock.cfg
Jan 07 09:30:13.095          io_sock.495628      main_buffer     1  io-sock fullpath: /sbin/io-sock
Jan 07 09:30:13.095          io_sock.495628      main_buffer     1  io-sock BuildID ee1dea5e444d7d8c1db9a729ec18a2bc
Jan 07 09:30:13.095          io_sock.495628      main_buffer     1  qnx.typed_mem="below4G&sysram"
Jan 07 09:30:13.097          io_sock.495628      main_buffer     1  Copyright (c) 1992-2021 The FreeBSD Project.
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