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macsec: Add support for GCM-AES-256 cipher suite

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This adds support for the GCM-AES-256 cipher suite as specified in
IEEE 802.1AEbn-2011. The prepared cipher suite selection mechanism is used,
with GCM-AES-128 being the default cipher suite as defined in the standard.

Signed-off-by: Felix Walter <felix.walter@cloudandheat.com>
Cc: Sabrina Dubroca <sd@queasysnail.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Felix Walter
2018-01-05 14:33:31 +01:00
committed by David S. Miller
parent e8b18af8c3
commit ccfdec9089
2 changed files with 67 additions and 16 deletions
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11
include/uapi/linux/if_macsec.h
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@@ -18,12 +18,17 @@
#define MACSEC_GENL_NAME "macsec"
#define MACSEC_GENL_VERSION 1
#define MACSEC_MAX_KEY_LEN 128
#define MACSEC_MAX_KEY_LEN 256
#define MACSEC_KEYID_LEN 16
#define MACSEC_DEFAULT_CIPHER_ID 0x0080020001000001ULL
#define MACSEC_DEFAULT_CIPHER_ALT 0x0080C20001000001ULL
/* cipher IDs as per IEEE802.1AEbn-2011 */
#define MACSEC_CIPHER_ID_GCM_AES_128 0x0080C20001000001ULL
#define MACSEC_CIPHER_ID_GCM_AES_256 0x0080C20001000002ULL
#define MACSEC_DEFAULT_CIPHER_ID MACSEC_CIPHER_ID_GCM_AES_128
/* deprecated cipher ID for GCM-AES-128 */
#define MACSEC_DEFAULT_CIPHER_ALT 0x0080020001000001ULL
#define MACSEC_MIN_ICV_LEN 8
#define MACSEC_MAX_ICV_LEN 32