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macsec: Netlink support of XPN cipher suites (IEEE 802.1AEbw)

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Netlink support of extended packet number cipher suites,
allows adding and updating XPN macsec interfaces.

Added support in:
    * Creating interfaces with GCM-AES-XPN-128 and GCM-AES-XPN-256 suites.
    * Setting and getting 64bit packet numbers with of SAs.
    * Setting (only on SA creation) and getting ssci of SAs.
    * Setting salt when installing a SAK.

Added 2 cipher suite identifiers according to 802.1AE-2018 table 14-1:
    * MACSEC_CIPHER_ID_GCM_AES_XPN_128
    * MACSEC_CIPHER_ID_GCM_AES_XPN_256

In addition, added 2 new netlink attribute types:
    * MACSEC_SA_ATTR_SSCI
    * MACSEC_SA_ATTR_SALT

Depends on: macsec: Support XPN frame handling - IEEE 802.1AEbw.

Signed-off-by: Era Mayflower <mayflowerera@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Era Mayflower 2020-03-09 19:47:02 +00:00 • committed by David S. Miller
parent a21ecf0e03
commit 48ef50fa86
3 changed files with 157 additions and 15 deletions
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8
include/uapi/linux/if_macsec.h
View file

@ -22,9 +22,11 @@
#define MACSEC_KEYID_LEN 16
/* cipher IDs as per IEEE802.1AEbn-2011 */
/* cipher IDs as per IEEE802.1AE-2018 (Table 14-1) */
#define MACSEC_CIPHER_ID_GCM_AES_128 0x0080C20001000001ULL
#define MACSEC_CIPHER_ID_GCM_AES_256 0x0080C20001000002ULL
#define MACSEC_CIPHER_ID_GCM_AES_XPN_128 0x0080C20001000003ULL
#define MACSEC_CIPHER_ID_GCM_AES_XPN_256 0x0080C20001000004ULL
/* deprecated cipher ID for GCM-AES-128 */
#define MACSEC_DEFAULT_CIPHER_ID 0x0080020001000001ULL
@ -88,11 +90,13 @@ enum macsec_sa_attrs {
MACSEC_SA_ATTR_UNSPEC,
MACSEC_SA_ATTR_AN, /* config/dump, u8 0..3 */
MACSEC_SA_ATTR_ACTIVE, /* config/dump, u8 0..1 */
MACSEC_SA_ATTR_PN, /* config/dump, u32 */
MACSEC_SA_ATTR_PN, /* config/dump, u32/u64 (u64 if XPN) */
MACSEC_SA_ATTR_KEY, /* config, data */
MACSEC_SA_ATTR_KEYID, /* config/dump, 128-bit */
MACSEC_SA_ATTR_STATS, /* dump, nested, macsec_sa_stats_attr */
MACSEC_SA_ATTR_PAD,
MACSEC_SA_ATTR_SSCI, /* config/dump, u32 - XPN only */
MACSEC_SA_ATTR_SALT, /* config, 96-bit - XPN only */
__MACSEC_SA_ATTR_END,
NUM_MACSEC_SA_ATTR = __MACSEC_SA_ATTR_END,
MACSEC_SA_ATTR_MAX = __MACSEC_SA_ATTR_END - 1,