aboutsummaryrefslogtreecommitdiffstats
path: root/include
diff options
context:
space:
mode:
authorVlad Yasevich <vladislav.yasevich@hp.com>2007-09-16 22:26:06 -0400
committerDavid S. Miller <davem@sunset.davemloft.net>2007-10-10 19:51:28 -0400
commitf7b0e93ba1a484700bd1b0e36bdaddaf4eb51b0b (patch)
treeb2d4e47039ca99a11ca737b72e43d2bfa8efa3be /include
parent96793b482540f3a26e2188eaf75cb56b7829d3e3 (diff)
[SCTP]: protocol definitions for SCTP-AUTH implementation
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
-rw-r--r--include/linux/sctp.h100
1 files changed, 99 insertions, 1 deletions
diff --git a/include/linux/sctp.h b/include/linux/sctp.h
index f4d717b72ddd..5eb38cc0e5a4 100644
--- a/include/linux/sctp.h
+++ b/include/linux/sctp.h
@@ -102,6 +102,9 @@ typedef enum {
102 SCTP_CID_ECN_CWR = 13, 102 SCTP_CID_ECN_CWR = 13,
103 SCTP_CID_SHUTDOWN_COMPLETE = 14, 103 SCTP_CID_SHUTDOWN_COMPLETE = 14,
104 104
105 /* AUTH Extension Section 4.1 */
106 SCTP_CID_AUTH = 0x0F,
107
105 /* PR-SCTP Sec 3.2 */ 108 /* PR-SCTP Sec 3.2 */
106 SCTP_CID_FWD_TSN = 0xC0, 109 SCTP_CID_FWD_TSN = 0xC0,
107 110
@@ -180,6 +183,11 @@ typedef enum {
180 SCTP_PARAM_SUPPORTED_ADDRESS_TYPES = __constant_htons(12), 183 SCTP_PARAM_SUPPORTED_ADDRESS_TYPES = __constant_htons(12),
181 SCTP_PARAM_ECN_CAPABLE = __constant_htons(0x8000), 184 SCTP_PARAM_ECN_CAPABLE = __constant_htons(0x8000),
182 185
186 /* AUTH Extension Section 3 */
187 SCTP_PARAM_RANDOM = __constant_htons(0x8002),
188 SCTP_PARAM_CHUNKS = __constant_htons(0x8003),
189 SCTP_PARAM_HMAC_ALGO = __constant_htons(0x8004),
190
183 /* Add-IP: Supported Extensions, Section 4.2 */ 191 /* Add-IP: Supported Extensions, Section 4.2 */
184 SCTP_PARAM_SUPPORTED_EXT = __constant_htons(0x8008), 192 SCTP_PARAM_SUPPORTED_EXT = __constant_htons(0x8008),
185 193
@@ -305,6 +313,24 @@ typedef struct sctp_supported_ext_param {
305 __u8 chunks[0]; 313 __u8 chunks[0];
306} __attribute__((packed)) sctp_supported_ext_param_t; 314} __attribute__((packed)) sctp_supported_ext_param_t;
307 315
316/* AUTH Section 3.1 Random */
317typedef struct sctp_random_param {
318 sctp_paramhdr_t param_hdr;
319 __u8 random_val[0];
320} __attribute__((packed)) sctp_random_param_t;
321
322/* AUTH Section 3.2 Chunk List */
323typedef struct sctp_chunks_param {
324 sctp_paramhdr_t param_hdr;
325 __u8 chunks[0];
326} __attribute__((packed)) sctp_chunks_param_t;
327
328/* AUTH Section 3.3 HMAC Algorithm */
329typedef struct sctp_hmac_algo_param {
330 sctp_paramhdr_t param_hdr;
331 __be16 hmac_ids[0];
332} __attribute__((packed)) sctp_hmac_algo_param_t;
333
308/* RFC 2960. Section 3.3.3 Initiation Acknowledgement (INIT ACK) (2): 334/* RFC 2960. Section 3.3.3 Initiation Acknowledgement (INIT ACK) (2):
309 * The INIT ACK chunk is used to acknowledge the initiation of an SCTP 335 * The INIT ACK chunk is used to acknowledge the initiation of an SCTP
310 * association. 336 * association.
@@ -471,7 +497,19 @@ typedef enum {
471 SCTP_ERROR_RSRC_LOW = __constant_htons(0x0101), 497 SCTP_ERROR_RSRC_LOW = __constant_htons(0x0101),
472 SCTP_ERROR_DEL_SRC_IP = __constant_htons(0x0102), 498 SCTP_ERROR_DEL_SRC_IP = __constant_htons(0x0102),
473 SCTP_ERROR_ASCONF_ACK = __constant_htons(0x0103), 499 SCTP_ERROR_ASCONF_ACK = __constant_htons(0x0103),
474 SCTP_ERROR_REQ_REFUSED = __constant_htons(0x0104) 500 SCTP_ERROR_REQ_REFUSED = __constant_htons(0x0104),
501
502 /* AUTH Section 4. New Error Cause
503 *
504 * This section defines a new error cause that will be sent if an AUTH
505 * chunk is received with an unsupported HMAC identifier.
506 * illustrates the new error cause.
507 *
508 * Cause Code Error Cause Name
509 * --------------------------------------------------------------
510 * 0x0105 Unsupported HMAC Identifier
511 */
512 SCTP_ERROR_UNSUP_HMAC = __constant_htons(0x0105)
475} sctp_error_t; 513} sctp_error_t;
476 514
477 515
@@ -609,4 +647,64 @@ typedef struct sctp_addip_chunk {
609 sctp_addiphdr_t addip_hdr; 647 sctp_addiphdr_t addip_hdr;
610} __attribute__((packed)) sctp_addip_chunk_t; 648} __attribute__((packed)) sctp_addip_chunk_t;
611 649
650/* AUTH
651 * Section 4.1 Authentication Chunk (AUTH)
652 *
653 * This chunk is used to hold the result of the HMAC calculation.
654 *
655 * 0 1 2 3
656 * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
657 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
658 * | Type = 0x0F | Flags=0 | Length |
659 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
660 * | Shared Key Identifier | HMAC Identifier |
661 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
662 * | |
663 * \ HMAC /
664 * / \
665 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
666 *
667 * Type: 1 byte (unsigned integer)
668 * This value MUST be set to 0x0F for all AUTH-chunks.
669 *
670 * Flags: 1 byte (unsigned integer)
671 * Set to zero on transmit and ignored on receipt.
672 *
673 * Length: 2 bytes (unsigned integer)
674 * This value holds the length of the HMAC in bytes plus 8.
675 *
676 * Shared Key Identifier: 2 bytes (unsigned integer)
677 * This value describes which endpoint pair shared key is used.
678 *
679 * HMAC Identifier: 2 bytes (unsigned integer)
680 * This value describes which message digest is being used. Table 2
681 * shows the currently defined values.
682 *
683 * The following Table 2 shows the currently defined values for HMAC
684 * identifiers.
685 *
686 * +-----------------+--------------------------+
687 * | HMAC Identifier | Message Digest Algorithm |
688 * +-----------------+--------------------------+
689 * | 0 | Reserved |
690 * | 1 | SHA-1 defined in [8] |
691 * | 2 | Reserved |
692 * | 3 | SHA-256 defined in [8] |
693 * +-----------------+--------------------------+
694 *
695 *
696 * HMAC: n bytes (unsigned integer) This hold the result of the HMAC
697 * calculation.
698 */
699typedef struct sctp_authhdr {
700 __be16 shkey_id;
701 __be16 hmac_id;
702 __u8 hmac[0];
703} __attribute__((packed)) sctp_authhdr_t;
704
705typedef struct sctp_auth_chunk {
706 sctp_chunkhdr_t chunk_hdr;
707 sctp_authhdr_t auth_hdr;
708} __attribute__((packed)) sctp_auth_chunk_t;
709
612#endif /* __LINUX_SCTP_H__ */ 710#endif /* __LINUX_SCTP_H__ */