forge/linux-pinenote
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

[IPSEC] xfrm: Abstract out encapsulation modes

Browse source 
This patch adds the structure xfrm_mode.  It is meant to represent
the operations carried out by transport/tunnel modes.

By doing this we allow additional encapsulation modes to be added
without clogging up the xfrm_input/xfrm_output paths.

Candidate modes include 4-to-6 tunnel mode, 6-to-4 tunnel mode, and
BEET modes.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Herbert Xu 2006-05-27 23:05:54 -07:00 • committed by David S. Miller
commit b59f45d0b2
17 changed files with 553 additions and 170 deletions
Download patch file Download diff file Expand all files Collapse all files

17
include/net/xfrm.h
View file

@ -20,6 +20,8 @@
#include <net/ip6_fib.h>
#define XFRM_ALIGN8(len) (((len) + 7) & ~7)
#define MODULE_ALIAS_XFRM_MODE(family, encap) \
MODULE_ALIAS("xfrm-mode-" __stringify(family) "-" __stringify(encap))
extern struct sock *xfrm_nl;
extern u32 sysctl_xfrm_aevent_etime;
@ -164,6 +166,7 @@ struct xfrm_state
/* Reference to data common to all the instances of this
* transformer. */
struct xfrm_type *type;
struct xfrm_mode *mode;
/* Security context */
struct xfrm_sec_ctx *security;
@ -205,6 +208,7 @@ struct xfrm_dst;
struct xfrm_policy_afinfo {
unsigned short family;
struct xfrm_type *type_map[256];
struct xfrm_mode *mode_map[XFRM_MODE_MAX];
struct dst_ops *dst_ops;
void (*garbage_collect)(void);
int (*dst_lookup)(struct xfrm_dst **dst, struct flowi *fl);
@ -267,6 +271,19 @@ extern int xfrm_unregister_type(struct xfrm_type *type, unsigned short family);
extern struct xfrm_type *xfrm_get_type(u8 proto, unsigned short family);
extern void xfrm_put_type(struct xfrm_type *type);
struct xfrm_mode {
int (*input)(struct xfrm_state *x, struct sk_buff *skb);
int (*output)(struct sk_buff *skb);
struct module *owner;
unsigned int encap;
};
extern int xfrm_register_mode(struct xfrm_mode *mode, int family);
extern int xfrm_unregister_mode(struct xfrm_mode *mode, int family);
extern struct xfrm_mode *xfrm_get_mode(unsigned int encap, int family);
extern void xfrm_put_mode(struct xfrm_mode *mode);
struct xfrm_tmpl
{
/* id in template is interpreted as: