* Copyright (c) University of British Columbia, 1984
* Copyright (c) 1990, 1992 The Regents of the University of California.
* This code is derived from software contributed to Berkeley by
* the Laboratory for Computation Vision and the Computer Science Department
* of the University of British Columbia.
* %sccs.include.redist.c%
* @(#)pk.h 7.10 (Berkeley) %G%
* X.25 Packet Level Definitions:
/* Packet type identifier field defintions. */
#define X25_CALL_ACCEPTED 15
#define X25_CLEAR_CONFIRM 23
#define X25_INTERRUPT_CONFIRM 39
#define X25_RESET_CONFIRM 31
#define X25_DIAGNOSTIC 241
#define X25_RESTART_CONFIRM 255
/* Restart cause field definitions. */
#define X25_RESTART_DTE_ORIGINATED 0
#define X25_RESTART_LOCAL_PROCEDURE_ERROR 1
#define X25_RESTART_NETWORK_CONGESTION 3
#define X25_RESTART_NETWORK_OPERATIONAL 7
#define X25_RESTART_DTE_ORIGINATED2 128
/* Miscellaneous definitions. */
#define DATA_PACKET_DESIGNATOR 0x01
#define RR_OR_RNR_PACKET_DESIGNATOR 0x02
#define RR_PACKET_DESIGNATOR 0x04
#define DEFAULT_WINDOW_SIZE 2
#define MAXFACILITIESLN 10
#define MAXCALLINFOLN 1+15+1+10+16
* X.25 Packet format definitions
* This will eventually have to be rewritten without reference
* to bit fields, to be ansi C compliant and allignment safe.
octet address_field
[MAXADDRLN
];
octet logical_channel_number
;
#define packet_cause packet_data
#define FACILITIES_REVERSE_CHARGE 0x1
#define FACILITIES_THROUGHPUT 0x2
#define FACILITIES_PACKETSIZE 0x42
#define FACILITIES_WINDOWSIZE 0x43
#define DP(xp) (((struct data_packet *)&(xp) -> packet_type) -> bits)
#define PS(xp) X25GBITS(DP(xp), p_s)
#define PR(xp) X25GBITS(DP(xp), p_r)
#define MBIT(xp) X25GBITS(DP(xp), m_bit)
#define SPR(xp, v) X25SBITS(DP(xp), p_r, (v))
#define SPS(xp, v) X25SBITS(DP(xp), p_s, (v))
#define SMBIT(xp, v) X25SBITS(DP(xp), m_bit, (v))
#define LCN(xp) (xp -> logical_channel_number + \
(X25GBITS(xp -> bits, lc_group_number) ? (X25GBITS(xp -> bits, lc_group_number) << 8) : 0))
#define SET_LCN(xp, lcn) ((xp -> logical_channel_number = lcn), \
(X25SBITS(xp -> bits, lc_group_number, lcn > 255 ? lcn >> 8 : 0)))
struct mbuf
*pk_template ();
/* Define X.25 packet level states. */
/* Call setup and clearing substates. */
#define DTE_RECEIVED_RESTART 8
#define DTE_SENT_RESTART 9
* The following definitions are used in a switch statement after
* determining the packet type. These values are returned by the
#define CALL 0 * MAXSTATES
#define CALL_ACCEPTED 1 * MAXSTATES
#define CLEAR 2 * MAXSTATES
#define CLEAR_CONF 3 * MAXSTATES
#define DATA 4 * MAXSTATES
#define INTERRUPT 5 * MAXSTATES
#define INTERRUPT_CONF 6 * MAXSTATES
#define RNR 8 * MAXSTATES
#define RESET 9 * MAXSTATES
#define RESET_CONF 10 * MAXSTATES
#define RESTART 11 * MAXSTATES
#define RESTART_CONF 12 * MAXSTATES
#define REJECT 13 * MAXSTATES
#define DIAG_TYPE 14 * MAXSTATES
#define INVALID_PACKET 15 * MAXSTATES
#define DELETE_PACKET INVALID_PACKET
* The following definitions are used by the restart procedures
* for noting wether the PLE is supposed to behave as DTE or DCE
* (essentially necessary for operation over LLC2)
#define DTE_DXERESOLVING 0x0001
#define DTE_PLAYDTE 0x0002
#define DTE_PLAYDCE 0x0004
#define DTE_CONNECTPENDING 0x0010
#define DTE_PRETENDDTE 0x0020
#define MAXRESTARTCOLLISIONS 10