463 lines
11 KiB
C
463 lines
11 KiB
C
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/*
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*
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* ===================================
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* HARP | Host ATM Research Platform
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* ===================================
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*
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*
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* This Host ATM Research Platform ("HARP") file (the "Software") is
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* made available by Network Computing Services, Inc. ("NetworkCS")
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* "AS IS". NetworkCS does not provide maintenance, improvements or
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* support of any kind.
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*
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* NETWORKCS MAKES NO WARRANTIES OR REPRESENTATIONS, EXPRESS OR IMPLIED,
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* INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY
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* AND FITNESS FOR A PARTICULAR PURPOSE, AS TO ANY ELEMENT OF THE
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* SOFTWARE OR ANY SUPPORT PROVIDED IN CONNECTION WITH THIS SOFTWARE.
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* In no event shall NetworkCS be responsible for any damages, including
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* but not limited to consequential damages, arising from or relating to
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* any use of the Software or related support.
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*
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* Copyright 1994-1998 Network Computing Services, Inc.
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*
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* Copies of this Software may be made, however, the above copyright
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* notice must be reproduced on all copies.
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*
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* @(#) $Id: scsp_msg.h,v 1.1 1998/07/10 15:29:02 johnc Exp $
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*
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*/
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/*
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* Server Cache Synchronization Protocol (SCSP) Support
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* ----------------------------------------------------
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*
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* SCSP message formats
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*
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*/
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#ifndef _SCSP_SCSP_MSG_H
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#define _SCSP_SCSP_MSG_H
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/*
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* ATMARP constants
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*/
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#define ARP_ATMFORUM 19
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#define ARP_TL_TMASK 0x40 /* Type mask */
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#define ARP_TL_NSAPA 0x00 /* Type = ATM Forum NSAPA */
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#define ARP_TL_E164 0x40 /* Type = E.164 */
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#define ARP_TL_LMASK 0x3f /* Length mask */
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/*
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* SCSP version number
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*/
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#define SCSP_VER_1 1
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/*
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* SCSP message types
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*/
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#define SCSP_CA_MSG 1
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#define SCSP_CSU_REQ_MSG 2
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#define SCSP_CSU_REPLY_MSG 3
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#define SCSP_CSUS_MSG 4
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#define SCSP_HELLO_MSG 5
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/*
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* SCSP Client Protocol IDs
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*/
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#define SCSP_PROTO_ATMARP 1
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#define SCSP_PROTO_NHRP 2
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#define SCSP_PROTO_MARS 3
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#define SCSP_PROTO_DHCP 4
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#define SCSP_PROTO_LNNI 5
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/*
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* Extension types
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*/
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#define SCSP_EXT_END 0
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#define SCSP_EXT_AUTH 1
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#define SCSP_EXT_VENDOR 2
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/*
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* Sequence number bounds
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*/
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#define SCSP_CSA_SEQ_MIN 0x80000001
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#define SCSP_CSA_SEQ_MAX 0x7FFFFFFF
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/*
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* Sender, Receiver, or Originator ID lengths
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*/
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#define SCSP_ATMARP_ID_LEN 4
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#define SCSP_NHRP_ID_LEN 4
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#define SCSP_MAX_ID_LEN 4
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/*
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* Cache Key lengths
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*/
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#define SCSP_ATMARP_KEY_LEN 4
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#define SCSP_NHRP_KEY_LEN 4
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#define SCSP_MAX_KEY_LEN 4
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/*
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* Fixed header
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*/
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struct scsp_nhdr {
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u_char sh_ver; /* SCSP version */
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u_char sh_type; /* Message type */
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u_short sh_len; /* Message length */
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u_short sh_checksum; /* IP checksum over message */
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u_short sh_ext_off; /* Offset of first extension */
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};
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/*
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* Mandatory common part
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*/
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struct scsp_nmcp {
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u_short sm_pid; /* Protocol ID */
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u_short sm_sgid; /* Server group ID */
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u_short sm_fill_0; /* Unused */
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u_short sm_flags; /* Flags--see below */
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u_char sm_sid_len; /* Sender ID length */
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u_char sm_rid_len; /* Receiver ID length */
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u_short sm_rec_cnt; /* Number of records */
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#ifdef NOTDEF
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/* Variable length fields */
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u_char sm_sid[]; /* Sender ID (variable) */
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u_char sm_rid[]; /* Receiver ID (variable) */
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#endif
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};
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/*
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* Extensions part
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*/
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struct scsp_next {
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u_short se_type; /* Extension type */
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u_short se_len; /* Length */
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#ifdef NOTDEF
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/* Variable length fields */
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u_char se_value[]; /* Extension value */
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#endif
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};
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/*
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* Cache State Advertisement record or
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* Cache State Advertisement Summary record
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*/
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struct scsp_ncsa {
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u_short scs_hop_cnt; /* Hop count */
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u_short scs_len; /* Record length */
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u_char scs_ck_len; /* Cache key length */
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u_char scs_oid_len; /* Originator ID length */
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u_short scs_nfill; /* Null bit and filler */
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long scs_seq; /* Sequence number */
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#ifdef NOTDEF
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/* Variable length fields */
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u_char scs_ckey[]; /* Cache key */
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u_char scs_oid[]; /* Originator ID */
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u_char scs_proto[]; /* Protocol-specific (in CSA) */
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#endif
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};
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#define SCSP_CSAS_NULL 0x8000
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/*
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* Cache Alignment message
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*/
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struct scsp_nca {
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long sca_seq; /* Sequence number */
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struct scsp_nmcp sca_mcp; /* Mandatory common */
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#ifdef NOTDEF
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/* Variable length fields */
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struct scsp_ncsa sca_rec[]; /* CSASs */
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#endif
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};
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#define SCSP_CA_M 0x8000 /* Master/Slave bit */
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#define SCSP_CA_I 0x4000 /* Initialization bit */
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#define SCSP_CA_O 0x2000 /* More bit */
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/*
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* Cache State Update Request, Cache State Update Reply, or
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* Cache State Update Solicit message
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*/
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struct scsp_ncsu_msg {
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struct scsp_nmcp scr_mcp; /* Mandatory common */
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#ifdef NOTDEF
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/* Variable length fields */
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struct scsp_ncsa scr_rec[]; /* CSAs */
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#endif
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};
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/*
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* Hello message
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*/
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struct scsp_nhello {
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u_short sch_hi; /* Hello interval */
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u_short sch_df; /* Dead factor */
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u_short sch_fill_0; /* Unused */
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u_short sch_fid; /* Family ID */
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struct scsp_nmcp sch_mcp; /* Mandatory common */
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#ifdef NOTDEF
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/* Variable-length fields */
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struct scsp_nrid sch_rid[]; /* Receiver IDs */
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#endif
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};
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/*
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* ATMARP-specific Cache State Advertisement record
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*/
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struct scsp_atmarp_ncsa {
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u_short sa_hrd; /* Hardware type -- 0x0013 */
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u_short sa_pro; /* Protocol type -- 0x0800 */
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u_char sa_shtl; /* Src ATM addr type/len */
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u_char sa_sstl; /* Src ATM subaddr type/len */
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u_char sa_state; /* State */
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u_char sa_fill1; /* Unused */
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u_char sa_spln; /* Src proto addr type */
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u_char sa_thtl; /* Tgt ATM addr type/len */
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u_char sa_tstl; /* Tgt ATM subaddr type/len */
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u_char sa_tpln; /* Tgt proto addr len */
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#ifdef NOTDEF
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/* Variable-length fields */
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u_char sa_sha[]; /* Source ATM addr */
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u_char sa_ssa[]; /* Source ATM subaddr */
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u_char sa_spa[]; /* Source IP addr */
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u_char sa_tha[]; /* Target ATM addr */
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u_char sa_tsa[]; /* Target ATM subaddr */
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u_char sa_tpa[]; /* Target IP addr */
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#endif
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};
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/*
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* NHRP-specific Cache State Advertisement record
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*/
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struct scsp_nhrp_ncsa {
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u_short sn_af; /* Address family */
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u_short sn_pro; /* NHRP protocol type */
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u_char sn_snap[5]; /* SNAP header */
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u_char sn_ver; /* NHRP version no. */
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u_short sn_flags; /* Flags */
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u_long sn_rid; /* Request ID */
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u_char sn_state; /* State */
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u_char sn_pln; /* Prefix length */
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u_short sn_fill1; /* Unused */
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u_short sn_mtu; /* MTU */
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u_short sn_hold; /* Holding time */
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u_char sn_csatl; /* Client addr type/len */
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u_char sn_csstl; /* Client subaddr type/len */
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u_char sn_cpln; /* Client proto addr len */
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u_char sn_pref; /* Preference for next hop */
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#ifdef NOTDEF
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/* Variable-length fields */
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u_char sn_csa[]; /* Client subnetwork addr */
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u_char sn_css[]; /* Client subnetwork subaddr */
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u_char sn_cpa[]; /* Client protocol addr */
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#endif
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};
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/*
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* SCSP messages in internal format
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*
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*
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* Fixed message header
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*/
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struct scsp_hdr {
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u_char msg_type; /* Message type */
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};
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typedef struct scsp_hdr Scsp_hdr;
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/*
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* Sender or Receiver ID structure
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*/
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struct scsp_id {
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struct scsp_id *next; /* Next ID */
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u_char id_len; /* ID length */
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u_char id[SCSP_MAX_ID_LEN]; /* ID */
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};
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typedef struct scsp_id Scsp_id;
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/*
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* Cacke Key structure
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*/
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struct scsp_ckey {
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u_char key_len; /* Cache key length */
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u_char key[SCSP_MAX_KEY_LEN]; /* Cache key */
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};
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typedef struct scsp_ckey Scsp_ckey;
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/*
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* Mandatory common part
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*/
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struct scsp_mcp {
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u_short pid; /* Protocol ID */
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u_short sgid; /* Server group ID */
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u_short flags; /* Flags */
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u_short rec_cnt; /* No. of records attached */
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Scsp_id sid; /* Sender ID */
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Scsp_id rid; /* Receiver ID */
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};
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typedef struct scsp_mcp Scsp_mcp;
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/*
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* Extensions part
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*/
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struct scsp_ext {
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struct scsp_ext *next; /* Next extension */
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u_short type; /* Extension type */
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u_short len; /* Length */
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#ifdef NOTDEF
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/* Variable length fields */
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u_char value[]; /* Extension value */
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#endif
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};
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typedef struct scsp_ext Scsp_ext;
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/*
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* Cache State Advertisement record or
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* Cache State Advertisement Summary record
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*/
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struct scsp_csa {
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struct scsp_csa *next; /* Next CSAS record */
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u_short hops; /* Hop count */
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u_char null; /* Null flag */
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u_long seq; /* CSA seq. no. */
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Scsp_ckey key; /* Cache key */
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Scsp_id oid; /* Originator ID */
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int trans_ct; /* No. of times CSA sent */
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struct scsp_atmarp_csa *atmarp_data; /* ATMARP data */
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#ifdef NOTDEF
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struct scsp_nhrp_csa *nhrp_data; /* NHRP data */
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#endif
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};
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typedef struct scsp_csa Scsp_csa;
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/*
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* Macro to free a CSA and any associated protocol-specific data
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*/
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#define SCSP_FREE_CSA(c) \
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{ \
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if ((c)->atmarp_data) { \
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UM_FREE((c)->atmarp_data); \
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} \
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UM_FREE((c)); \
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}
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/*
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* Cache Alignment message
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*/
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struct scsp_ca {
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long ca_seq; /* CA msg sequence no. */
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u_char ca_m; /* Master/slave bit */
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u_char ca_i; /* Initialization bit */
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u_char ca_o; /* More bit */
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Scsp_mcp ca_mcp; /* Mandatory common part */
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Scsp_csa *ca_csa_rec; /* Ptr. to CSAS records */
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};
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typedef struct scsp_ca Scsp_ca;
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/*
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* Cache State Update Request, Cache State Update Reply, or
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* Cache State Update Solicit message
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*/
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struct scsp_csu_msg {
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Scsp_mcp csu_mcp; /* Mandatory common part */
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Scsp_csa *csu_csa_rec; /* Ptr. to CSA records */
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};
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typedef struct scsp_csu_msg Scsp_csu_msg;
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/*
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* Hello message
|
||
|
|
*/
|
||
|
|
struct scsp_hello {
|
||
|
|
u_short hello_int; /* Hello interval */
|
||
|
|
u_short dead_factor; /* When is DCS dead? */
|
||
|
|
u_short family_id; /* Family ID */
|
||
|
|
Scsp_mcp hello_mcp; /* Mandatory common part */
|
||
|
|
};
|
||
|
|
typedef struct scsp_hello Scsp_hello;
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
* NHRP-specific Cache State Advertisement record
|
||
|
|
*/
|
||
|
|
struct scsp_nhrp_csa {
|
||
|
|
u_char req_id; /* Request ID */
|
||
|
|
u_char state; /* State */
|
||
|
|
u_char pref_len; /* Prefix length */
|
||
|
|
u_short flags; /* See below */
|
||
|
|
u_short mtu; /* Maximim transmission unit */
|
||
|
|
u_short hold_time; /* Entry holding time */
|
||
|
|
u_char caddr_tlen; /* Client addr type/length */
|
||
|
|
u_char csaddr_tlen; /* Client subaddr type/length */
|
||
|
|
u_char cproto_len; /* Client proto addr length */
|
||
|
|
u_char pref; /* Preference */
|
||
|
|
Atm_addr caddr; /* Client address */
|
||
|
|
Atm_addr csaddr; /* Client subaddress */
|
||
|
|
struct in_addr cproto_addr; /* Client protocol address */
|
||
|
|
};
|
||
|
|
typedef struct scsp_nhrp Scsp_nhrp;
|
||
|
|
|
||
|
|
#define SCSP_NHRP_UNIQ 0x8000
|
||
|
|
#define SCSP_NHRP_ARP 0x4000
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
* ATMARP-specific Cache State Advertisement record
|
||
|
|
*/
|
||
|
|
struct scsp_atmarp_csa {
|
||
|
|
u_char sa_state; /* State */
|
||
|
|
Atm_addr sa_sha; /* Source ATM addr */
|
||
|
|
Atm_addr sa_ssa; /* Source ATM subaddr */
|
||
|
|
struct in_addr sa_spa; /* Source IP addr */
|
||
|
|
Atm_addr sa_tha; /* Target ATM addr */
|
||
|
|
Atm_addr sa_tsa; /* Target ATM subaddr */
|
||
|
|
struct in_addr sa_tpa; /* Target IP addr */
|
||
|
|
};
|
||
|
|
typedef struct scsp_atmarp_csa Scsp_atmarp_csa;
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
* SCSP message
|
||
|
|
*/
|
||
|
|
struct scsp_msg {
|
||
|
|
Scsp_hdr sc_hdr;
|
||
|
|
union {
|
||
|
|
Scsp_ca *sc_u_ca;
|
||
|
|
Scsp_csu_msg *sc_u_csu_msg;
|
||
|
|
Scsp_hello *sc_u_hello;
|
||
|
|
} sc_msg_u;
|
||
|
|
Scsp_ext *sc_ext;
|
||
|
|
};
|
||
|
|
typedef struct scsp_msg Scsp_msg;
|
||
|
|
|
||
|
|
#define sc_msg_type sc_hdr.msg_type
|
||
|
|
#define sc_ca sc_msg_u.sc_u_ca
|
||
|
|
#define sc_csu_msg sc_msg_u.sc_u_csu_msg
|
||
|
|
#define sc_hello sc_msg_u.sc_u_hello
|
||
|
|
|
||
|
|
#endif /* _SCSP_SCSP_MSG_H */
|