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xfrm: MIGRATE enhancements (draft-ebalard-mext-pfkey-enhanced-migrate)

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Provides implementation of the enhancements of XFRM/PF_KEY MIGRATE mechanism
specified in draft-ebalard-mext-pfkey-enhanced-migrate-00. Defines associated
PF_KEY SADB_X_EXT_KMADDRESS extension and XFRM/netlink XFRMA_KMADDRESS
attribute.

Signed-off-by: Arnaud Ebalard <arno@natisbad.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Arnaud Ebalard 2008-10-05 13:33:42 -07:00 • committed by David S. Miller
commit 13c1d18931
7 changed files with 154 additions and 37 deletions
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13
include/linux/pfkeyv2.h
View file

@ -226,6 +226,15 @@ struct sadb_x_sec_ctx {
} __attribute__((packed));
/* sizeof(struct sadb_sec_ctx) = 8 */
/* Used by MIGRATE to pass addresses IKE will use to perform
* negotiation with the peer */
struct sadb_x_kmaddress {
uint16_t sadb_x_kmaddress_len;
uint16_t sadb_x_kmaddress_exttype;
uint32_t sadb_x_kmaddress_reserved;
} __attribute__((packed));
/* sizeof(struct sadb_x_kmaddress) == 8 */
/* Message types */
#define SADB_RESERVED 0
#define SADB_GETSPI 1
@ -346,7 +355,9 @@ struct sadb_x_sec_ctx {
#define SADB_X_EXT_NAT_T_DPORT 22
#define SADB_X_EXT_NAT_T_OA 23
#define SADB_X_EXT_SEC_CTX 24
#define SADB_EXT_MAX 24
/* Used with MIGRATE to pass @ to IKE for negotiation */
#define SADB_X_EXT_KMADDRESS 25
#define SADB_EXT_MAX 25
/* Identity Extension values */
#define SADB_IDENTTYPE_RESERVED 0

10
include/linux/xfrm.h
View file

@ -279,6 +279,7 @@ enum xfrm_attr_type_t {
XFRMA_POLICY_TYPE, /* struct xfrm_userpolicy_type */
XFRMA_MIGRATE,
XFRMA_ALG_AEAD, /* struct xfrm_algo_aead */
XFRMA_KMADDRESS, /* struct xfrm_user_kmaddress */
__XFRMA_MAX
#define XFRMA_MAX (__XFRMA_MAX - 1)
@ -415,6 +416,15 @@ struct xfrm_user_report {
struct xfrm_selector sel;
};
/* Used by MIGRATE to pass addresses IKE should use to perform
* SA negotiation with the peer */
struct xfrm_user_kmaddress {
xfrm_address_t local;
xfrm_address_t remote;
__u32 reserved;
__u16 family;
};
struct xfrm_user_migrate {
xfrm_address_t old_daddr;
xfrm_address_t old_saddr;