📄 decnet.h
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union controlmsg
{
struct initmsg cm_init; /* initialization message */
struct verifmsg cm_ver; /* verification message */
struct testmsg cm_test; /* hello and test message */
struct l1rout cm_l1rou; /* level 1 routing message */
struct l2rout cm_l2rout; /* level 2 routing message */
struct rhellomsg cm_rhello; /* router hello message */
struct ehellomsg cm_ehello; /* endnode hello message */
};
/* Macros for decoding routing-info fields
*/
#define RI_COST(x) ((x) & 0777)
#define RI_HOPS(x) (((x) >> 10) & 037)
/*
* NSP protocol fields and values.
*/
#define NSP_TYPEMASK 014 /* mask to isolate type code */
#define NSP_SUBMASK 0160 /* mask to isolate subtype code */
#define NSP_SUBSHFT 4 /* shift to move subtype code */
#define MFT_DATA 0 /* data message */
#define MFT_ACK 04 /* acknowledgement message */
#define MFT_CTL 010 /* control message */
#define MFS_ILS 020 /* data or I/LS indicator */
#define MFS_BOM 040 /* beginning of message (data) */
#define MFS_MOM 0 /* middle of message (data) */
#define MFS_EOM 0100 /* end of message (data) */
#define MFS_INT 040 /* interrupt message */
#define MFS_DACK 0 /* data acknowledgement */
#define MFS_IACK 020 /* I/LS acknowledgement */
#define MFS_CACK 040 /* connect acknowledgement */
#define MFS_NOP 0 /* no operation */
#define MFS_CI 020 /* connect initiate */
#define MFS_CC 040 /* connect confirm */
#define MFS_DI 060 /* disconnect initiate */
#define MFS_DC 0100 /* disconnect confirm */
#define MFS_RCI 0140 /* retransmitted connect initiate */
#define SGQ_ACK 0100000 /* ack */
#define SGQ_NAK 0110000 /* negative ack */
#define SGQ_OACK 0120000 /* other channel ack */
#define SGQ_ONAK 0130000 /* other channel negative ack */
#define SGQ_MASK 07777 /* mask to isolate seq # */
#define SGQ_OTHER 020000 /* other channel qualifier */
#define SGQ_DELAY 010000 /* ack delay flag */
#define SGQ_EOM 0100000 /* pseudo flag for end-of-message */
#define LSM_MASK 03 /* mask for modifier field */
#define LSM_NOCHANGE 0 /* no change */
#define LSM_DONOTSEND 1 /* do not send data */
#define LSM_SEND 2 /* send data */
#define LSI_MASK 014 /* mask for interpretation field */
#define LSI_DATA 0 /* data segment or message count */
#define LSI_INTR 4 /* interrupt request count */
#define LSI_INTM 0377 /* funny marker for int. message */
#define COS_MASK 014 /* mask for flow control field */
#define COS_NONE 0 /* no flow control */
#define COS_SEGMENT 04 /* segment flow control */
#define COS_MESSAGE 010 /* message flow control */
#define COS_CRYPTSER 020 /* cryptographic services requested */
#define COS_DEFAULT 1 /* default value for field */
#define COI_MASK 3 /* mask for version field */
#define COI_32 0 /* version 3.2 */
#define COI_31 1 /* version 3.1 */
#define COI_40 2 /* version 4.0 */
#define COI_41 3 /* version 4.1 */
#define MNU_MASK 140 /* mask for session control version */
#define MNU_10 000 /* session V1.0 */
#define MNU_20 040 /* session V2.0 */
#define MNU_ACCESS 1 /* access control present */
#define MNU_USRDATA 2 /* user data field present */
#define MNU_INVKPROXY 4 /* invoke proxy field present */
#define MNU_UICPROXY 8 /* use uic-based proxy */
#define DC_NORESOURCES 1 /* no resource reason code */
#define DC_NOLINK 41 /* no link terminate reason code */
#define DC_COMPLETE 42 /* disconnect complete reason code */
#define DI_NOERROR 0 /* user disconnect */
#define DI_SHUT 3 /* node is shutting down */
#define DI_NOUSER 4 /* destination end user does not exist */
#define DI_INVDEST 5 /* invalid end user destination */
#define DI_REMRESRC 6 /* insufficient remote resources */
#define DI_TPA 8 /* third party abort */
#define DI_PROTOCOL 7 /* protocol error discovered */
#define DI_ABORT 9 /* user abort */
#define DI_LOCALRESRC 32 /* insufficient local resources */
#define DI_REMUSERRESRC 33 /* insufficient remote user resources */
#define DI_BADACCESS 34 /* bad access control information */
#define DI_BADACCNT 36 /* bad ACCOUNT information */
#define DI_CONNECTABORT 38 /* connect request cancelled */
#define DI_TIMEDOUT 38 /* remote node or user crashed */
#define DI_UNREACHABLE 39 /* local timers expired due to ... */
#define DI_BADIMAGE 43 /* bad image data in connect */
#define DI_SERVMISMATCH 54 /* cryptographic service mismatch */
#define UC_OBJREJECT 0 /* object rejected connect */
#define UC_USERDISCONNECT 0 /* user disconnect */
#define UC_RESOURCES 1 /* insufficient resources (local or remote) */
#define UC_NOSUCHNODE 2 /* unrecognized node name */
#define UC_REMOTESHUT 3 /* remote node shutting down */
#define UC_NOSUCHOBJ 4 /* unrecognized object */
#define UC_INVOBJFORMAT 5 /* invalid object name format */
#define UC_OBJTOOBUSY 6 /* object too busy */
#define UC_NETWORKABORT 8 /* network abort */
#define UC_USERABORT 9 /* user abort */
#define UC_INVNODEFORMAT 10 /* invalid node name format */
#define UC_LOCALSHUT 11 /* local node shutting down */
#define UC_ACCESSREJECT 34 /* invalid access control information */
#define UC_NORESPONSE 38 /* no response from object */
#define UC_UNREACHABLE 39 /* node unreachable */
/*
* NSP message formats.
*/
struct nsphdr /* general nsp header */
{
byte nh_flags; /* message flags */
word nh_dst; /* destination link address */
word nh_src; /* source link address */
};
struct seghdr /* data segment header */
{
byte sh_flags; /* message flags */
word sh_dst; /* destination link address */
word sh_src; /* source link address */
word sh_seq[3]; /* sequence numbers */
};
struct minseghdr /* minimum data segment header */
{
byte ms_flags; /* message flags */
word ms_dst; /* destination link address */
word ms_src; /* source link address */
word ms_seq; /* sequence number */
};
struct lsmsg /* link service message (after hdr) */
{
byte ls_lsflags; /* link service flags */
byte ls_fcval; /* flow control value */
};
struct ackmsg /* acknowledgement message */
{
byte ak_flags; /* message flags */
word ak_dst; /* destination link address */
word ak_src; /* source link address */
word ak_acknum[2]; /* acknowledgement numbers */
};
struct minackmsg /* minimum acknowledgement message */
{
byte mk_flags; /* message flags */
word mk_dst; /* destination link address */
word mk_src; /* source link address */
word mk_acknum; /* acknowledgement number */
};
struct ciackmsg /* connect acknowledgement message */
{
byte ck_flags; /* message flags */
word ck_dst; /* destination link address */
};
struct cimsg /* connect initiate message */
{
byte ci_flags; /* message flags */
word ci_dst; /* destination link address (0) */
word ci_src; /* source link address */
byte ci_services; /* requested services */
byte ci_info; /* information */
word ci_segsize; /* maximum segment size */
};
struct ccmsg /* connect confirm message */
{
byte cc_flags; /* message flags */
word cc_dst; /* destination link address */
word cc_src; /* source link address */
byte cc_services; /* requested services */
byte cc_info; /* information */
word cc_segsize; /* maximum segment size */
byte cc_optlen; /* optional data length */
};
struct cnmsg /* generic connect message */
{
byte cn_flags; /* message flags */
word cn_dst; /* destination link address */
word cn_src; /* source link address */
byte cn_services; /* requested services */
byte cn_info; /* information */
word cn_segsize; /* maximum segment size */
};
struct dimsg /* disconnect initiate message */
{
byte di_flags; /* message flags */
word di_dst; /* destination link address */
word di_src; /* source link address */
word di_reason; /* reason code */
byte di_optlen; /* optional data length */
};
struct dcmsg /* disconnect confirm message */
{
byte dc_flags; /* message flags */
word dc_dst; /* destination link address */
word dc_src; /* source link address */
word dc_reason; /* reason code */
};
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