net_namespace.c File Reference

#include <linux/workqueue.h>
#include <linux/rtnetlink.h>
#include <linux/cache.h>
#include <linux/slab.h>
#include <linux/list.h>
#include <linux/delay.h>
#include <linux/sched.h>
#include <linux/idr.h>
#include <linux/rculist.h>
#include <linux/nsproxy.h>
#include <linux/proc_fs.h>
#include <linux/file.h>
#include <linux/export.h>
#include <net/net_namespace.h>
#include <net/netns/generic.h>

Go to the source code of this file.

Macros
#define	pr_fmt(fmt)   KBUILD_MODNAME ": " fmt
#define	INITIAL_NET_GEN_PTRS   13 /* +1 for len +2 for rcu_head */

Functions
	LIST_HEAD (net_namespace_list)
	EXPORT_SYMBOL_GPL (net_namespace_list)
	EXPORT_SYMBOL (init_net)
struct net *	copy_net_ns (unsigned long flags, struct net *old_net)
struct net *	get_net_ns_by_fd (int fd)
struct net *	get_net_ns_by_pid (pid_t pid)
	EXPORT_SYMBOL_GPL (get_net_ns_by_pid)
	pure_initcall (net_ns_init)
int	register_pernet_subsys (struct pernet_operations *ops)
	EXPORT_SYMBOL_GPL (register_pernet_subsys)
void	unregister_pernet_subsys (struct pernet_operations *ops)
	EXPORT_SYMBOL_GPL (unregister_pernet_subsys)
int	register_pernet_device (struct pernet_operations *ops)
	EXPORT_SYMBOL_GPL (register_pernet_device)
void	unregister_pernet_device (struct pernet_operations *ops)
	EXPORT_SYMBOL_GPL (unregister_pernet_device)

Variables
struct net	init_net

Macro Definition Documentation

#define INITIAL_NET_GEN_PTRS   13 /* +1 for len +2 for rcu_head */

Definition at line 35 of file net_namespace.c.

#define pr_fmt

(

fmt

)

KBUILD_MODNAME ": " fmt

Definition at line 1 of file net_namespace.c.

Function Documentation

struct net* copy_net_ns ( unsigned long  flags, struct net *  old_net  )

read

Definition at line 350 of file net_namespace.c.

EXPORT_SYMBOL

(

init_net

)

EXPORT_SYMBOL_GPL

(

net_namespace_list

)

EXPORT_SYMBOL_GPL

(

get_net_ns_by_pid

)

EXPORT_SYMBOL_GPL

(

register_pernet_subsys

)

EXPORT_SYMBOL_GPL

(

unregister_pernet_subsys

)

EXPORT_SYMBOL_GPL

(

register_pernet_device

)

EXPORT_SYMBOL_GPL

(

unregister_pernet_device

)

struct net* get_net_ns_by_fd ( int  fd )

read

Definition at line 357 of file net_namespace.c.

struct net* get_net_ns_by_pid ( pid_t  pid )

read

Definition at line 363 of file net_namespace.c.

LIST_HEAD

(

net_namespace_list

)

pure_initcall

(

net_ns_init

)

int register_pernet_device

(

struct pernet_operations *

ops

)

register_pernet_device - register a network namespace device

: pernet operations structure for the subsystem

Register a device which has init and exit functions that are called when network namespaces are created and destroyed respectively.

When registered all network namespace init functions are called for every existing network namespace. Allowing kernel modules to have a race free view of the set of network namespaces.

When a new network namespace is created all of the init methods are called in the order in which they were registered.

When a network namespace is destroyed all of the exit methods are called in the reverse of the order with which they were registered.

Definition at line 579 of file net_namespace.c.

int register_pernet_subsys

(

struct pernet_operations *

ops

)

register_pernet_subsys - register a network namespace subsystem

: pernet operations structure for the subsystem

Register a subsystem which has init and exit functions that are called when network namespaces are created and destroyed respectively.

When registered all network namespace init functions are called for every existing network namespace. Allowing kernel modules to have a race free view of the set of network namespaces.

When a new network namespace is created all of the init methods are called in the order in which they were registered.

When a network namespace is destroyed all of the exit methods are called in the reverse of the order with which they were registered.

Definition at line 533 of file net_namespace.c.

void unregister_pernet_device

(

struct pernet_operations *

ops

)

unregister_pernet_device - unregister a network namespace netdevice

: pernet operations structure to manipulate

Remove the pernet operations structure from the list to be used when network namespaces are created or destroyed. In addition run the exit method for all existing network namespaces.

Definition at line 600 of file net_namespace.c.

void unregister_pernet_subsys

(

struct pernet_operations *

ops

)

unregister_pernet_subsys - unregister a network namespace subsystem

: pernet operations structure to manipulate

Remove the pernet operations structure from the list to be used when network namespaces are created or destroyed. In addition run the exit method for all existing network namespaces.

Definition at line 552 of file net_namespace.c.

Variable Documentation

struct net init_net

Initial value:

= {
    .dev_base_head = LIST_HEAD_INIT(init_net.dev_base_head),
}

Definition at line 30 of file net_namespace.c.