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linux-next/include/uapi/linux/if_macsec.h
Sabrina Dubroca e8660ded7f macsec: restore uAPI after addition of GCM-AES-256
Commit ccfdec9089 ("macsec: Add support for GCM-AES-256 cipher suite")
changed a few values in the uapi headers for MACsec.

Because of existing userspace implementations, we need to preserve the
value of MACSEC_DEFAULT_CIPHER_ID. Not doing that resulted in
wpa_supplicant segfaults when a secure channel was created using the
default cipher. Thus, swap MACSEC_DEFAULT_CIPHER_{ID,ALT} back to their
original values.

Changing the maximum length of the MACSEC_SA_ATTR_KEY attribute is
unnecessary, as the previous value (MACSEC_MAX_KEY_LEN, which was 128B)
is large enough to carry 32-bytes keys. This patch reverts
MACSEC_MAX_KEY_LEN to 128B and restores the old length check on
MACSEC_SA_ATTR_KEY.

Fixes: ccfdec9089 ("macsec: Add support for GCM-AES-256 cipher suite")
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
Signed-off-by: Sabrina Dubroca <sd@queasysnail.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-22 15:40:16 -05:00

178 lines
5.7 KiB
C

/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
/*
* include/uapi/linux/if_macsec.h - MACsec device
*
* Copyright (c) 2015 Sabrina Dubroca <sd@queasysnail.net>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#ifndef _UAPI_MACSEC_H
#define _UAPI_MACSEC_H
#include <linux/types.h>
#define MACSEC_GENL_NAME "macsec"
#define MACSEC_GENL_VERSION 1
#define MACSEC_MAX_KEY_LEN 128
#define MACSEC_KEYID_LEN 16
/* cipher IDs as per IEEE802.1AEbn-2011 */
#define MACSEC_CIPHER_ID_GCM_AES_128 0x0080C20001000001ULL
#define MACSEC_CIPHER_ID_GCM_AES_256 0x0080C20001000002ULL
/* deprecated cipher ID for GCM-AES-128 */
#define MACSEC_DEFAULT_CIPHER_ID 0x0080020001000001ULL
#define MACSEC_DEFAULT_CIPHER_ALT MACSEC_CIPHER_ID_GCM_AES_128
#define MACSEC_MIN_ICV_LEN 8
#define MACSEC_MAX_ICV_LEN 32
/* upper limit for ICV length as recommended by IEEE802.1AE-2006 */
#define MACSEC_STD_ICV_LEN 16
enum macsec_attrs {
MACSEC_ATTR_UNSPEC,
MACSEC_ATTR_IFINDEX, /* u32, ifindex of the MACsec netdevice */
MACSEC_ATTR_RXSC_CONFIG, /* config, nested macsec_rxsc_attrs */
MACSEC_ATTR_SA_CONFIG, /* config, nested macsec_sa_attrs */
MACSEC_ATTR_SECY, /* dump, nested macsec_secy_attrs */
MACSEC_ATTR_TXSA_LIST, /* dump, nested, macsec_sa_attrs for each TXSA */
MACSEC_ATTR_RXSC_LIST, /* dump, nested, macsec_rxsc_attrs for each RXSC */
MACSEC_ATTR_TXSC_STATS, /* dump, nested, macsec_txsc_stats_attr */
MACSEC_ATTR_SECY_STATS, /* dump, nested, macsec_secy_stats_attr */
__MACSEC_ATTR_END,
NUM_MACSEC_ATTR = __MACSEC_ATTR_END,
MACSEC_ATTR_MAX = __MACSEC_ATTR_END - 1,
};
enum macsec_secy_attrs {
MACSEC_SECY_ATTR_UNSPEC,
MACSEC_SECY_ATTR_SCI,
MACSEC_SECY_ATTR_ENCODING_SA,
MACSEC_SECY_ATTR_WINDOW,
MACSEC_SECY_ATTR_CIPHER_SUITE,
MACSEC_SECY_ATTR_ICV_LEN,
MACSEC_SECY_ATTR_PROTECT,
MACSEC_SECY_ATTR_REPLAY,
MACSEC_SECY_ATTR_OPER,
MACSEC_SECY_ATTR_VALIDATE,
MACSEC_SECY_ATTR_ENCRYPT,
MACSEC_SECY_ATTR_INC_SCI,
MACSEC_SECY_ATTR_ES,
MACSEC_SECY_ATTR_SCB,
MACSEC_SECY_ATTR_PAD,
__MACSEC_SECY_ATTR_END,
NUM_MACSEC_SECY_ATTR = __MACSEC_SECY_ATTR_END,
MACSEC_SECY_ATTR_MAX = __MACSEC_SECY_ATTR_END - 1,
};
enum macsec_rxsc_attrs {
MACSEC_RXSC_ATTR_UNSPEC,
MACSEC_RXSC_ATTR_SCI, /* config/dump, u64 */
MACSEC_RXSC_ATTR_ACTIVE, /* config/dump, u8 0..1 */
MACSEC_RXSC_ATTR_SA_LIST, /* dump, nested */
MACSEC_RXSC_ATTR_STATS, /* dump, nested, macsec_rxsc_stats_attr */
MACSEC_RXSC_ATTR_PAD,
__MACSEC_RXSC_ATTR_END,
NUM_MACSEC_RXSC_ATTR = __MACSEC_RXSC_ATTR_END,
MACSEC_RXSC_ATTR_MAX = __MACSEC_RXSC_ATTR_END - 1,
};
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_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_END,
NUM_MACSEC_SA_ATTR = __MACSEC_SA_ATTR_END,
MACSEC_SA_ATTR_MAX = __MACSEC_SA_ATTR_END - 1,
};
enum macsec_nl_commands {
MACSEC_CMD_GET_TXSC,
MACSEC_CMD_ADD_RXSC,
MACSEC_CMD_DEL_RXSC,
MACSEC_CMD_UPD_RXSC,
MACSEC_CMD_ADD_TXSA,
MACSEC_CMD_DEL_TXSA,
MACSEC_CMD_UPD_TXSA,
MACSEC_CMD_ADD_RXSA,
MACSEC_CMD_DEL_RXSA,
MACSEC_CMD_UPD_RXSA,
};
/* u64 per-RXSC stats */
enum macsec_rxsc_stats_attr {
MACSEC_RXSC_STATS_ATTR_UNSPEC,
MACSEC_RXSC_STATS_ATTR_IN_OCTETS_VALIDATED,
MACSEC_RXSC_STATS_ATTR_IN_OCTETS_DECRYPTED,
MACSEC_RXSC_STATS_ATTR_IN_PKTS_UNCHECKED,
MACSEC_RXSC_STATS_ATTR_IN_PKTS_DELAYED,
MACSEC_RXSC_STATS_ATTR_IN_PKTS_OK,
MACSEC_RXSC_STATS_ATTR_IN_PKTS_INVALID,
MACSEC_RXSC_STATS_ATTR_IN_PKTS_LATE,
MACSEC_RXSC_STATS_ATTR_IN_PKTS_NOT_VALID,
MACSEC_RXSC_STATS_ATTR_IN_PKTS_NOT_USING_SA,
MACSEC_RXSC_STATS_ATTR_IN_PKTS_UNUSED_SA,
MACSEC_RXSC_STATS_ATTR_PAD,
__MACSEC_RXSC_STATS_ATTR_END,
NUM_MACSEC_RXSC_STATS_ATTR = __MACSEC_RXSC_STATS_ATTR_END,
MACSEC_RXSC_STATS_ATTR_MAX = __MACSEC_RXSC_STATS_ATTR_END - 1,
};
/* u32 per-{RX,TX}SA stats */
enum macsec_sa_stats_attr {
MACSEC_SA_STATS_ATTR_UNSPEC,
MACSEC_SA_STATS_ATTR_IN_PKTS_OK,
MACSEC_SA_STATS_ATTR_IN_PKTS_INVALID,
MACSEC_SA_STATS_ATTR_IN_PKTS_NOT_VALID,
MACSEC_SA_STATS_ATTR_IN_PKTS_NOT_USING_SA,
MACSEC_SA_STATS_ATTR_IN_PKTS_UNUSED_SA,
MACSEC_SA_STATS_ATTR_OUT_PKTS_PROTECTED,
MACSEC_SA_STATS_ATTR_OUT_PKTS_ENCRYPTED,
__MACSEC_SA_STATS_ATTR_END,
NUM_MACSEC_SA_STATS_ATTR = __MACSEC_SA_STATS_ATTR_END,
MACSEC_SA_STATS_ATTR_MAX = __MACSEC_SA_STATS_ATTR_END - 1,
};
/* u64 per-TXSC stats */
enum macsec_txsc_stats_attr {
MACSEC_TXSC_STATS_ATTR_UNSPEC,
MACSEC_TXSC_STATS_ATTR_OUT_PKTS_PROTECTED,
MACSEC_TXSC_STATS_ATTR_OUT_PKTS_ENCRYPTED,
MACSEC_TXSC_STATS_ATTR_OUT_OCTETS_PROTECTED,
MACSEC_TXSC_STATS_ATTR_OUT_OCTETS_ENCRYPTED,
MACSEC_TXSC_STATS_ATTR_PAD,
__MACSEC_TXSC_STATS_ATTR_END,
NUM_MACSEC_TXSC_STATS_ATTR = __MACSEC_TXSC_STATS_ATTR_END,
MACSEC_TXSC_STATS_ATTR_MAX = __MACSEC_TXSC_STATS_ATTR_END - 1,
};
/* u64 per-SecY stats */
enum macsec_secy_stats_attr {
MACSEC_SECY_STATS_ATTR_UNSPEC,
MACSEC_SECY_STATS_ATTR_OUT_PKTS_UNTAGGED,
MACSEC_SECY_STATS_ATTR_IN_PKTS_UNTAGGED,
MACSEC_SECY_STATS_ATTR_OUT_PKTS_TOO_LONG,
MACSEC_SECY_STATS_ATTR_IN_PKTS_NO_TAG,
MACSEC_SECY_STATS_ATTR_IN_PKTS_BAD_TAG,
MACSEC_SECY_STATS_ATTR_IN_PKTS_UNKNOWN_SCI,
MACSEC_SECY_STATS_ATTR_IN_PKTS_NO_SCI,
MACSEC_SECY_STATS_ATTR_IN_PKTS_OVERRUN,
MACSEC_SECY_STATS_ATTR_PAD,
__MACSEC_SECY_STATS_ATTR_END,
NUM_MACSEC_SECY_STATS_ATTR = __MACSEC_SECY_STATS_ATTR_END,
MACSEC_SECY_STATS_ATTR_MAX = __MACSEC_SECY_STATS_ATTR_END - 1,
};
#endif /* _UAPI_MACSEC_H */