linux/net/x25/x25_route.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 *	X.25 Packet Layer release 002
 *
 *	This is ALPHA test software. This code may break your machine,
 *	randomly fail to work with new releases, misbehave and/or generally
 *	screw up. It might even work.
 *
 *	This code REQUIRES 2.1.15 or higher
 *
 *	History
 *	X.25 001	Jonathan Naylor	Started coding.
 */

#include <linux/if_arp.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <net/x25.h>

LIST_HEAD(…);
DEFINE_RWLOCK(…);

/*
 *	Add a new route.
 */
static int x25_add_route(struct x25_address *address, unsigned int sigdigits,
			 struct net_device *dev)
{ … }

/**
 * __x25_remove_route - remove route from x25_route_list
 * @rt: route to remove
 *
 * Remove route from x25_route_list. If it was there.
 * Caller must hold x25_route_list_lock.
 */
static void __x25_remove_route(struct x25_route *rt)
{ … }

static int x25_del_route(struct x25_address *address, unsigned int sigdigits,
			 struct net_device *dev)
{ … }

/*
 *	A device has been removed, remove its routes.
 */
void x25_route_device_down(struct net_device *dev)
{ … }

/*
 *	Check that the device given is a valid X.25 interface that is "up".
 */
struct net_device *x25_dev_get(char *devname)
{ … }

/**
 * 	x25_get_route -	Find a route given an X.25 address.
 *	@addr: - address to find a route for
 *
 * 	Find a route given an X.25 address.
 */
struct x25_route *x25_get_route(struct x25_address *addr)
{ … }

/*
 *	Handle the ioctls that control the routing functions.
 */
int x25_route_ioctl(unsigned int cmd, void __user *arg)
{ … }

/*
 *	Release all memory associated with X.25 routing structures.
 */
void __exit x25_route_free(void)
{ … }