genl-ctrl-list man page

genl-ctrl-list — List available kernel-side Generic Netlink families

Synopsis

genl-ctrl-list [-d]

Description

Queries the Generic Netlink controller in kernel and prints a list of all registered Generic Netlink families including the version of the interface that has been registered.

Options

-h or --help
Print help text to console and exit.
-v or --version
Print versioning information to console and exit.
-d or --details

Include additional detailed information for each Generic Netlink family that is printed.

The information includes:

hdrsize N
The size of the user specific header.
maxattr N
The maximum Netlink attribute identifier expected by the interface.
op NAME (ID) <FLAGS>

A list of available operations including their name, numeric identifier and the flags indicating the capabilities of the opertion.

Available flags:

admin-perm
Requires administrative privileges
has-doit
Command can handle request
has-dump
Command can handle a dump request
has-policy
Command enforces attribute validation policy
grp NAME (ID)
A list of registered multicast groups including name (if available) and identifier.

Example:
0x0010 nlctrl version 2

hdrsize 0 maxattr 7
op GETFAMILY (0x03) <has-doit,has-dump,has-policy>
grp notify (0x10)

Example

$ genl-ctrl-list
0x0010 nlctrl version 2
0x0011 NLBL_MGMT version 3
0x0012 NLBL_CIPSOv4 version 3
0x0013 NLBL_UNLBL version 3
0x0014 acpi_event version 1
0x0015 thermal_event version 1
0x0016 VFS_DQUOT version 1
0x0017 TASKSTATS version 1
0x0018 NET_DM version 2

Author

Thomas Graf is the original author and current maintainer of libnl and libnl tools. Many people have contributed to it since.

Info

20 April 2012 libnl