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[IPSEC] xfrm: Abstract out encapsulation modes

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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
parent 546be2405b
commit b59f45d0b2
17 changed files with 553 additions and 170 deletions
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4
include/linux/xfrm.h
View file

@ -118,6 +118,10 @@ enum
XFRM_SHARE_UNIQUE /* Use once */
};
#define XFRM_MODE_TRANSPORT 0
#define XFRM_MODE_TUNNEL 1
#define XFRM_MODE_MAX 2
/* Netlink configuration messages. */
enum {
XFRM_MSG_BASE = 0x10,