patch-2.4.26 linux-2.4.26/include/linux/sctp.h

• Lines: 399
• Date: 2004-04-14 06:05:40.000000000 -0700
• Orig file: linux-2.4.25/include/linux/sctp.h
• Orig date: 2003-11-28 10:26:21.000000000 -0800

diff -urN linux-2.4.25/include/linux/sctp.h linux-2.4.26/include/linux/sctp.h
@@ -1,7 +1,7 @@
 /* SCTP kernel reference Implementation
+ * (C) Copyright IBM Corp. 2001, 2003
  * Copyright (c) 1999-2000 Cisco, Inc.
  * Copyright (c) 1999-2001 Motorola, Inc.
- * Copyright (c) 2001-2002 International Business Machines, Corp.
  * Copyright (c) 2001 Intel Corp.
  * Copyright (c) 2001 Nokia, Inc.
  * Copyright (c) 2001 La Monte H.P. Yarroll
@@ -42,6 +42,8 @@
  *    randall@sctp.chicago.il.us
  *    kmorneau@cisco.com
  *    qxie1@email.mot.com
+ *    Sridhar Samudrala <sri@us.ibm.com>
+ *    Kevin Gao <kevin.gao@intel.com>
  *
  * Any bugs reported given to us we will try to fix... any fixes shared will
  * be incorporated into the next SCTP release.
@@ -59,14 +61,14 @@
 	__u16 dest;
 	__u32 vtag;
 	__u32 checksum;
-} sctp_sctphdr_t __attribute__((packed));
+} __attribute__((packed)) sctp_sctphdr_t;
 
 /* Section 3.2.  Chunk Field Descriptions. */
 typedef struct sctp_chunkhdr {
 	__u8 type;
 	__u8 flags;
 	__u16 length;
-} sctp_chunkhdr_t __attribute__((packed));
+} __attribute__((packed)) sctp_chunkhdr_t;
 
 
 /* Section 3.2.  Chunk Type Values.
@@ -150,7 +152,7 @@
 typedef struct sctp_paramhdr {
 	__u16 type;
 	__u16 length;
-} sctp_paramhdr_t __attribute((packed));
+} __attribute__((packed)) sctp_paramhdr_t;
 
 typedef enum {
 
@@ -200,12 +202,12 @@
 	__u16 ssn;
 	__u32 ppid;
 	__u8  payload[0];
-} sctp_datahdr_t __attribute__((packed));
+} __attribute__((packed)) sctp_datahdr_t;
 
 typedef struct sctp_data_chunk {
         sctp_chunkhdr_t chunk_hdr;
         sctp_datahdr_t  data_hdr;
-} sctp_data_chunk_t __attribute__((packed));
+} __attribute__((packed)) sctp_data_chunk_t;
 
 /* DATA Chuck Specific Flags */
 enum {
@@ -230,48 +232,48 @@
 	__u16 num_inbound_streams;
 	__u32 initial_tsn;
 	__u8  params[0];
-} sctp_inithdr_t __attribute__((packed));
+} __attribute__((packed)) sctp_inithdr_t;
 
 typedef struct sctp_init_chunk {
 	sctp_chunkhdr_t chunk_hdr;
 	sctp_inithdr_t init_hdr;
-} sctp_init_chunk_t __attribute__((packed));
+} __attribute__((packed)) sctp_init_chunk_t;
 
 
 /* Section 3.3.2.1. IPv4 Address Parameter (5) */
 typedef struct sctp_ipv4addr_param {
 	sctp_paramhdr_t param_hdr;
 	struct in_addr  addr;
-} sctp_ipv4addr_param_t __attribute__((packed));
+} __attribute__((packed)) sctp_ipv4addr_param_t;
 
 /* Section 3.3.2.1. IPv6 Address Parameter (6) */
 typedef struct sctp_ipv6addr_param {
 	sctp_paramhdr_t param_hdr;
 	struct in6_addr addr;
-} sctp_ipv6addr_param_t __attribute__((packed));
+} __attribute__((packed)) sctp_ipv6addr_param_t;
 
 /* Section 3.3.2.1 Cookie Preservative (9) */
 typedef struct sctp_cookie_preserve_param {
 	sctp_paramhdr_t param_hdr;
 	uint32_t        lifespan_increment;
-} sctp_cookie_preserve_param_t __attribute__((packed));
+} __attribute__((packed)) sctp_cookie_preserve_param_t;
 
 /* Section 3.3.2.1 Host Name Address (11) */
 typedef struct sctp_hostname_param {
 	sctp_paramhdr_t param_hdr;
 	uint8_t hostname[0];
-} sctp_hostname_param_t __attribute__((packed));
+} __attribute__((packed)) sctp_hostname_param_t;
 
 /* Section 3.3.2.1 Supported Address Types (12) */
 typedef struct sctp_supported_addrs_param {
 	sctp_paramhdr_t param_hdr;
 	uint16_t types[0];
-} sctp_supported_addrs_param_t __attribute__((packed));
+} __attribute__((packed)) sctp_supported_addrs_param_t;
 
 /* Appendix A. ECN Capable (32768) */
 typedef struct sctp_ecn_capable_param {
 	sctp_paramhdr_t param_hdr;
-} sctp_ecn_capable_param_t __attribute__((packed));
+} __attribute__((packed)) sctp_ecn_capable_param_t;
 
 
 
@@ -285,13 +287,13 @@
 typedef struct sctp_cookie_param {
 	sctp_paramhdr_t p;
 	__u8 body[0];
-} sctp_cookie_param_t __attribute__((packed));
+} __attribute__((packed)) sctp_cookie_param_t;
 
 /* Section 3.3.3.1 Unrecognized Parameters (8) */
 typedef struct sctp_unrecognized_param {
 	sctp_paramhdr_t param_hdr;
 	sctp_paramhdr_t unrecognized;
-} sctp_unrecognized_param_t __attribute__((packed));
+} __attribute__((packed)) sctp_unrecognized_param_t;
 
 
 
@@ -306,7 +308,7 @@
 typedef struct sctp_gap_ack_block {
 	__u16 start;
 	__u16 end;
-} sctp_gap_ack_block_t __attribute__((packed));
+} __attribute__((packed)) sctp_gap_ack_block_t;
 
 typedef uint32_t sctp_dup_tsn_t;
 
@@ -321,12 +323,12 @@
 	__u16 num_gap_ack_blocks;
 	__u16 num_dup_tsns;
 	sctp_sack_variable_t variable[0];
-} sctp_sackhdr_t __attribute__((packed));
+} __attribute__((packed)) sctp_sackhdr_t;
 
 typedef struct sctp_sack_chunk {
 	sctp_chunkhdr_t chunk_hdr;
 	sctp_sackhdr_t sack_hdr;
-} sctp_sack_chunk_t __attribute__((packed));
+} __attribute__((packed)) sctp_sack_chunk_t;
 
 
 /* RFC 2960.  Section 3.3.5 Heartbeat Request (HEARTBEAT) (4):
@@ -338,12 +340,12 @@
 
 typedef struct sctp_heartbeathdr {
 	sctp_paramhdr_t info;
-} sctp_heartbeathdr_t __attribute__((packed));
+} __attribute__((packed)) sctp_heartbeathdr_t;
 
 typedef struct sctp_heartbeat_chunk {
 	sctp_chunkhdr_t chunk_hdr;
 	sctp_heartbeathdr_t hb_hdr;
-} sctp_heartbeat_chunk_t __attribute__((packed));
+} __attribute__((packed)) sctp_heartbeat_chunk_t;
 
 
 /* For the abort and shutdown ACK we must carry the init tag in the
@@ -352,7 +354,7 @@
  */
 typedef struct sctp_abort_chunk {
         sctp_chunkhdr_t uh;
-} sctp_abort_chunkt_t __attribute__((packed));
+} __attribute__((packed)) sctp_abort_chunkt_t;
 
 
 /* For the graceful shutdown we must carry the tag (in common header)
@@ -360,14 +362,12 @@
  */
 typedef struct sctp_shutdownhdr {
 	__u32 cum_tsn_ack;
-} sctp_shutdownhdr_t __attribute__((packed));
+} __attribute__((packed)) sctp_shutdownhdr_t;
 
 struct sctp_shutdown_chunk_t {
         sctp_chunkhdr_t    chunk_hdr;
         sctp_shutdownhdr_t shutdown_hdr;
-} __attribute__((packed));
-
-
+} __attribute__ ((packed));
 
 /* RFC 2960.  Section 3.3.10 Operation Error (ERROR) (9) */
 
@@ -375,12 +375,12 @@
 	__u16 cause;
 	__u16 length;
 	__u8  variable[0];
-} sctp_errhdr_t __attribute__((packed));
+} __attribute__((packed)) sctp_errhdr_t;
 
 typedef struct sctp_operr_chunk {
         sctp_chunkhdr_t chunk_hdr;
 	sctp_errhdr_t   err_hdr;
-} sctp_operr_chunk_t __attribute__((packed));
+} __attribute__((packed)) sctp_operr_chunk_t;
 
 /* RFC 2960 3.3.10 - Operation Error
  *
@@ -437,12 +437,13 @@
 	 * 0x0101          Operation Refused Due to Resource Shortage.
 	 * 0x0102          Request to Delete Source IP Address.
 	 * 0x0103          Association Aborted due to illegal ASCONF-ACK
+	 * 0x0104          Request refused - no authorization.
 	 */
 	SCTP_ERROR_DEL_LAST_IP	= __constant_htons(0x0100),
 	SCTP_ERROR_RSRC_LOW	= __constant_htons(0x0101),
 	SCTP_ERROR_DEL_SRC_IP	= __constant_htons(0x0102),
 	SCTP_ERROR_ASCONF_ACK   = __constant_htons(0x0103),
-
+	SCTP_ERROR_REQ_REFUSED	= __constant_htons(0x0104)
 } sctp_error_t;
 
 
@@ -457,7 +458,7 @@
 typedef struct sctp_ecne_chunk {
 	sctp_chunkhdr_t chunk_hdr;
 	sctp_ecnehdr_t ence_hdr;
-} sctp_ecne_chunk_t __attribute__((packed));
+} __attribute__((packed)) sctp_ecne_chunk_t;
 
 /* RFC 2960.  Appendix A.  Explicit Congestion Notification.
  *   Congestion Window Reduced (CWR) (13)
@@ -469,120 +470,57 @@
 typedef struct sctp_cwr_chunk {
 	sctp_chunkhdr_t chunk_hdr;
 	sctp_cwrhdr_t cwr_hdr;
-} sctp_cwr_chunk_t __attribute__((packed));
-
-
-/* FIXME:  Cleanup needs to continue below this line. */
+} __attribute__((packed)) sctp_cwr_chunk_t;
 
 /*
  * ADDIP Section 3.1 New Chunk Types
  */
 
-
-/* ADDIP Section 3.1.1
- *
- * ASCONF-Request Correlation ID: 32 bits (unsigned integer)
- *
- * This is an opaque integer assigned by the sender to identify each
- * request parameter. It is in host byte order and is only meaningful
- * to the sender. The receiver of the ASCONF Chunk will copy this 32
- * bit value into the ASCONF Correlation ID field of the
- * ASCONF-ACK. The sender of the ASCONF can use this same value in the
- * ASCONF-ACK to find which request the response is for.
- *
- * ASCONF Parameter: TLV format
- *
- * Each Address configuration change is represented by a TLV parameter
- * as defined in Section 3.2. One or more requests may be present in
- * an ASCONF Chunk.
- */
-typedef struct {
-	__u32	correlation;
-	sctp_paramhdr_t p;
-	__u8		payload[0];
-} sctpAsconfReq_t;
-
 /* ADDIP
- * 3.1.1  Address/Stream Configuration Change Chunk (ASCONF)
+ * Section 3.1.1 Address Configuration Change Chunk (ASCONF)
  *
- * This chunk is used to communicate to the remote endpoint one of the
- * configuration change requests that MUST be acknowledged.  The
- * information carried in the ASCONF Chunk uses the form of a
- * Tag-Length-Value (TLV), as described in "3.2.1
- * Optional/Variable-length Parameter Format" in [RFC2960], for all
- * variable parameters.
- */
-typedef struct {
-	__u32	serial;
-	__u8	reserved[3];
-	__u8	addr_type;
-	__u32	addr[4];
-	sctpAsconfReq_t requests[0];
-} sctpAsconf_t;
-
-/* ADDIP
- * 3.1.2 Address/Stream Configuration Acknowledgment Chunk (ASCONF-ACK)
- *
- * ASCONF-Request Correlation ID: 32 bits (unsigned integer)
- *
- * This value is copied from the ASCONF Correlation ID received in the
- * ASCONF Chunk. It is used by the receiver of the ASCONF-ACK to identify
- * which ASCONF parameter this response is associated with.
- *
- * ASCONF Parameter Response : TLV format
- *
- * The ASCONF Parameter Response is used in the ASCONF-ACK to report
- * status of ASCONF processing. By default, if a responding endpoint
- * does not include any Error Cause, a success is indicated. Thus a
- * sender of an ASCONF-ACK MAY indicate complete success of all TLVs in
- * an ASCONF by returning only the Chunk Type, Chunk Flags, Chunk Length
- * (set to 8) and the Serial Number.
- */
-typedef union {
-	struct {
-		__u32		correlation;
-		sctp_paramhdr_t header;	/* success report */
-	} success;
-	struct {
-		__u32		correlation;
-		sctp_paramhdr_t header;	/* error cause indication */
-		sctp_paramhdr_t errcause;
-		uint8_t request[0];	/* original request from ASCONF */
-	} error;
-#define __correlation	success.correlation
-#define __header	success.header
-#define __cause		error.errcause
-#define __request	error.request
-}  sctpAsconfAckRsp_t;
+ * 	Serial Number: 32 bits (unsigned integer)
+ *	This value represents a Serial Number for the ASCONF Chunk. The
+ *	valid range of Serial Number is from 0 to 2^32-1.
+ *	Serial Numbers wrap back to 0 after reaching 2^32 -1.
+ *
+ *	Address Parameter: 8 or 20 bytes (depending on type)
+ *	The address is an address of the sender of the ASCONF chunk,
+ *	the address MUST be considered part of the association by the
+ *	peer endpoint. This field may be used by the receiver of the 
+ *	ASCONF to help in finding the association. This parameter MUST
+ *	be present in every ASCONF message i.e. it is a mandatory TLV
+ *	parameter.
+ *
+ *	ASCONF Parameter: TLV format
+ *	Each Address configuration change is represented by a TLV
+ *	parameter as defined in Section 3.2. One or more requests may
+ *	be present in an ASCONF Chunk.
+ *
+ * Section 3.1.2 Address Configuration Acknowledgement Chunk (ASCONF-ACK)
+ * 
+ *	Serial Number: 32 bits (unsigned integer)
+ *	This value represents the Serial Number for the received ASCONF
+ *	Chunk that is acknowledged by this chunk. This value is copied
+ *	from the received ASCONF Chunk. 
+ *
+ *	ASCONF Parameter Response: TLV format
+ *	The ASCONF Parameter Response is used in the ASCONF-ACK to
+ *	report status of ASCONF processing.
+ */
+typedef struct sctp_addip_param {
+	sctp_paramhdr_t	param_hdr;
+	__u32		crr_id;	
+} __attribute__((packed)) sctp_addip_param_t;
 
-/* ADDIP
- * 3.1.2 Address/Stream Configuration Acknowledgment Chunk (ASCONF-ACK)
- *
- * This chunk is used by the receiver of an ASCONF Chunk to
- * acknowledge the reception. It carries zero or more results for any
- * ASCONF Parameters that were processed by the receiver.
- */
-typedef struct {
+typedef struct sctp_addiphdr {
 	__u32	serial;
-	sctpAsconfAckRsp_t responses[0];
-} sctpAsconfAck_t;
+	__u8	params[0];
+} __attribute__((packed)) sctp_addiphdr_t;
 
-/*********************************************************************
- * Internal structures
- *
- * These are data structures which never go out on the wire.
- *********************************************************************/
-
-/* What is this data structure for?  The TLV isn't one--it is just a
- * value.  Perhaps this data structure ought to have a type--otherwise
- * it is not unambigiously parseable.  --piggy
- */
-typedef struct {
-	struct list_head hook;
-	int length;	/* length of the TLV */
-
-	/* the actually TLV to be copied into ASCONF_ACK */
-	sctpAsconfAckRsp_t TLV;
-} sctpAsconfAckRspNode_t;
+typedef struct sctp_addip_chunk {
+	sctp_chunkhdr_t chunk_hdr;
+	sctp_addiphdr_t addip_hdr;
+} __attribute__((packed)) sctp_addip_chunk_t;
 
 #endif /* __LINUX_SCTP_H__ */