linux/net/core/lwtunnel.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * lwtunnel	Infrastructure for light weight tunnels like mpls
 *
 * Authors:	Roopa Prabhu, <[email protected]>
 */

#include <linux/capability.h>
#include <linux/module.h>
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/uaccess.h>
#include <linux/skbuff.h>
#include <linux/netdevice.h>
#include <linux/lwtunnel.h>
#include <linux/in.h>
#include <linux/init.h>
#include <linux/err.h>

#include <net/lwtunnel.h>
#include <net/rtnetlink.h>
#include <net/ip6_fib.h>
#include <net/rtnh.h>

DEFINE_STATIC_KEY_FALSE(nf_hooks_lwtunnel_enabled);
EXPORT_SYMBOL_GPL(…);

#ifdef CONFIG_MODULES

static const char *lwtunnel_encap_str(enum lwtunnel_encap_types encap_type)
{ … }

#endif /* CONFIG_MODULES */

struct lwtunnel_state *lwtunnel_state_alloc(int encap_len)
{ … }
EXPORT_SYMBOL_GPL(…);

static const struct lwtunnel_encap_ops __rcu *
		lwtun_encaps[LWTUNNEL_ENCAP_MAX + 1] __read_mostly;

int lwtunnel_encap_add_ops(const struct lwtunnel_encap_ops *ops,
			   unsigned int num)
{ … }
EXPORT_SYMBOL_GPL(…);

int lwtunnel_encap_del_ops(const struct lwtunnel_encap_ops *ops,
			   unsigned int encap_type)
{ … }
EXPORT_SYMBOL_GPL(…);

int lwtunnel_build_state(struct net *net, u16 encap_type,
			 struct nlattr *encap, unsigned int family,
			 const void *cfg, struct lwtunnel_state **lws,
			 struct netlink_ext_ack *extack)
{ … }
EXPORT_SYMBOL_GPL(…);

int lwtunnel_valid_encap_type(u16 encap_type, struct netlink_ext_ack *extack)
{ … }
EXPORT_SYMBOL_GPL(…);

int lwtunnel_valid_encap_type_attr(struct nlattr *attr, int remaining,
				   struct netlink_ext_ack *extack)
{ … }
EXPORT_SYMBOL_GPL(…);

void lwtstate_free(struct lwtunnel_state *lws)
{ … }
EXPORT_SYMBOL_GPL(…);

int lwtunnel_fill_encap(struct sk_buff *skb, struct lwtunnel_state *lwtstate,
			int encap_attr, int encap_type_attr)
{ … }
EXPORT_SYMBOL_GPL(…);

int lwtunnel_get_encap_size(struct lwtunnel_state *lwtstate)
{ … }
EXPORT_SYMBOL_GPL(…);

int lwtunnel_cmp_encap(struct lwtunnel_state *a, struct lwtunnel_state *b)
{ … }
EXPORT_SYMBOL_GPL(…);

int lwtunnel_output(struct net *net, struct sock *sk, struct sk_buff *skb)
{ … }
EXPORT_SYMBOL_GPL(…);

int lwtunnel_xmit(struct sk_buff *skb)
{ … }
EXPORT_SYMBOL_GPL(…);

int lwtunnel_input(struct sk_buff *skb)
{ … }
EXPORT_SYMBOL_GPL(…);