ip6_tunnel.c File Reference

#include <linux/module.h>
#include <linux/capability.h>
#include <linux/errno.h>
#include <linux/types.h>
#include <linux/sockios.h>
#include <linux/icmp.h>
#include <linux/if.h>
#include <linux/in.h>
#include <linux/ip.h>
#include <linux/if_tunnel.h>
#include <linux/net.h>
#include <linux/in6.h>
#include <linux/netdevice.h>
#include <linux/if_arp.h>
#include <linux/icmpv6.h>
#include <linux/init.h>
#include <linux/route.h>
#include <linux/rtnetlink.h>
#include <linux/netfilter_ipv6.h>
#include <linux/slab.h>
#include <linux/hash.h>
#include <asm/uaccess.h>
#include <linux/atomic.h>
#include <net/icmp.h>
#include <net/ip.h>
#include <net/ipv6.h>
#include <net/ip6_route.h>
#include <net/addrconf.h>
#include <net/ip6_tunnel.h>
#include <net/xfrm.h>
#include <net/dsfield.h>
#include <net/inet_ecn.h>
#include <net/net_namespace.h>
#include <net/netns/generic.h>

Go to the source code of this file.

Data Structures
struct	ip6_tnl_net
struct	pcpu_tstats
struct	ipv6_tel_txoption

Macros
#define	pr_fmt(fmt)   KBUILD_MODNAME ": " fmt
#define	IP6_TNL_TRACE(x...)   do {;} while(0)
#define	IPV6_TCLASS_MASK   (IPV6_FLOWINFO_MASK & ~IPV6_FLOWLABEL_MASK)
#define	IPV6_TCLASS_SHIFT   20
#define	HASH_SIZE_SHIFT   5
#define	HASH_SIZE   (1 << HASH_SIZE_SHIFT)
#define	for_each_ip6_tunnel_rcu(start)   for (t = rcu_dereference(start); t; t = rcu_dereference(t->next))

Functions
	MODULE_AUTHOR ("Ville Nuorvala")
	MODULE_DESCRIPTION ("IPv6 tunneling device")
	MODULE_LICENSE ("GPL")
	MODULE_ALIAS_NETDEV ("ip6tnl0")
struct pcpu_tstats	__attribute__ ((aligned(4 *sizeof(unsigned long))))
struct dst_entry *	ip6_tnl_dst_check (struct ip6_tnl *t)
	EXPORT_SYMBOL_GPL (ip6_tnl_dst_check)
void	ip6_tnl_dst_reset (struct ip6_tnl *t)
	EXPORT_SYMBOL_GPL (ip6_tnl_dst_reset)
void	ip6_tnl_dst_store (struct ip6_tnl *t, struct dst_entry *dst)
	EXPORT_SYMBOL_GPL (ip6_tnl_dst_store)
__u16	ip6_tnl_parse_tlv_enc_lim (struct sk_buff *skb, __u8 *raw)
	EXPORT_SYMBOL (ip6_tnl_parse_tlv_enc_lim)
__u32	ip6_tnl_get_cap (struct ip6_tnl *t, const struct in6_addr *laddr, const struct in6_addr *raddr)
	EXPORT_SYMBOL (ip6_tnl_get_cap)
int	ip6_tnl_rcv_ctl (struct ip6_tnl *t, const struct in6_addr *laddr, const struct in6_addr *raddr)
	EXPORT_SYMBOL_GPL (ip6_tnl_rcv_ctl)
int	ip6_tnl_xmit_ctl (struct ip6_tnl *t)
	EXPORT_SYMBOL_GPL (ip6_tnl_xmit_ctl)
	module_init (ip6_tunnel_init)
	module_exit (ip6_tunnel_cleanup)

Variables
unsigned long	rx_packets
unsigned long	rx_bytes
unsigned long	tx_packets
unsigned long	tx_bytes
struct ipv6_tel_txoption	__attribute__

Macro Definition Documentation

#define for_each_ip6_tunnel_rcu

(

start

)

for (t = rcu_dereference(start); t; t = rcu_dereference(t->next))

ip6_tnl_lookup - fetch tunnel matching the end-point addresses : the address of the tunnel exit-point : the address of the tunnel entry-point

Return: tunnel matching given end-points if found, else fallback tunnel if its device is up, else NULL

Definition at line 171 of file ip6_tunnel.c.

#define HASH_SIZE   (1 << HASH_SIZE_SHIFT)

Definition at line 75 of file ip6_tunnel.c.

#define HASH_SIZE_SHIFT   5

Definition at line 74 of file ip6_tunnel.c.

#define IP6_TNL_TRACE

(

x...

)

do {;} while(0)

Definition at line 68 of file ip6_tunnel.c.

#define IPV6_TCLASS_MASK   (IPV6_FLOWINFO_MASK & ~IPV6_FLOWLABEL_MASK)

Definition at line 71 of file ip6_tunnel.c.

#define IPV6_TCLASS_SHIFT   20

Definition at line 72 of file ip6_tunnel.c.

#define pr_fmt

(

fmt

)

KBUILD_MODNAME ": " fmt

Definition at line 21 of file ip6_tunnel.c.

Function Documentation

struct pcpu_tstats __attribute__

(

(aligned(4 *sizeof(unsigned long)))

)

EXPORT_SYMBOL

(

ip6_tnl_parse_tlv_enc_lim

)

EXPORT_SYMBOL

(

ip6_tnl_get_cap

)

EXPORT_SYMBOL_GPL

(

ip6_tnl_dst_check

)

EXPORT_SYMBOL_GPL

(

ip6_tnl_dst_reset

)

EXPORT_SYMBOL_GPL

(

ip6_tnl_dst_store

)

EXPORT_SYMBOL_GPL

(

ip6_tnl_rcv_ctl

)

EXPORT_SYMBOL_GPL

(

ip6_tnl_xmit_ctl

)

struct dst_entry* ip6_tnl_dst_check ( struct ip6_tnl *  t )

read

Definition at line 129 of file ip6_tunnel.c.

void ip6_tnl_dst_reset

(

struct ip6_tnl *

t

)

Definition at line 144 of file ip6_tunnel.c.

void ip6_tnl_dst_store	(	struct ip6_tnl *	t,
		struct dst_entry *	dst
	)

Definition at line 151 of file ip6_tunnel.c.

__u32 ip6_tnl_get_cap	(	struct ip6_tnl *	t,
		const struct in6_addr *	laddr,
		const struct in6_addr *	raddr
	)

Definition at line 699 of file ip6_tunnel.c.

__u16 ip6_tnl_parse_tlv_enc_lim	(	struct sk_buff *	skb,
		__u8 *	raw
	)

parse_tvl_tnl_enc_lim - handle encapsulation limit option : received socket buffer

Return: 0 if none was found, else index to encapsulation limit

Definition at line 380 of file ip6_tunnel.c.

int ip6_tnl_rcv_ctl	(	struct ip6_tnl *	t,
		const struct in6_addr *	laddr,
		const struct in6_addr *	raddr
	)

Definition at line 724 of file ip6_tunnel.c.

int ip6_tnl_xmit_ctl

(

struct ip6_tnl *

t

)

Definition at line 867 of file ip6_tunnel.c.

MODULE_ALIAS_NETDEV

(

"ip6tnl0"

)

MODULE_AUTHOR

(

"Ville Nuorvala"

)

MODULE_DESCRIPTION

(

"IPv6 tunneling device"

)

module_exit

(

ip6_tunnel_cleanup

)

module_init

(

ip6_tunnel_init

)

MODULE_LICENSE

(

"GPL"

)

Variable Documentation

struct ipv6_tel_txoption __attribute__

unsigned long rx_bytes

Definition at line 105 of file ip6_tunnel.c.

unsigned long rx_packets

Definition at line 104 of file ip6_tunnel.c.

unsigned long tx_bytes

Definition at line 107 of file ip6_tunnel.c.

unsigned long tx_packets

Definition at line 106 of file ip6_tunnel.c.