* Copyright (c) University of British Columbia, 1984
* Copyright (c) 1990 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_var.h 7.8 (Berkeley) %G%
* X.25 Logical Channel Descriptor
int (*lcd_send
)(); /* if X.25 front end, direct connect */
int (*lcd_upper
)(); /* switch to socket vs datagram vs ...*/
caddr_t lcd_upnext
; /* reference for lcd_upper() */
short lcd_lcn
; /* Logical channel number */
short lcd_state
; /* Logical Channel state */
bool lcd_intrconf_pending
; /* Interrupt confirmation pending */
octet lcd_intrdata
; /* Octet of incoming intr data */
short lcd_timer
; /* Various timer values */
short lcd_dg_timer
; /* to reclaim idle datagram circuits */
char lcd_retry
; /* Timer retry count */
char lcd_rsn
; /* Seq no of last received packet */
char lcd_ssn
; /* Seq no of next packet to send */
char lcd_output_window
; /* Output flow control window */
char lcd_input_window
; /* Input flow control window */
char lcd_last_transmitted_pr
;/* Last Pr value transmitted */
bool lcd_rnr_condition
; /* Remote in busy condition */
bool lcd_window_condition
; /* Output window size exceeded */
bool lcd_reset_condition
; /* True, if waiting reset confirm */
char lcd_packetsize
; /* Maximum packet size */
char lcd_windowsize
; /* Window size - both directions */
octet lcd_closed_user_group
; /* Closed user group specification */
char lcd_flags
; /* copy of sockaddr_x25 op_flags */
struct mbuf
*lcd_template
; /* Address of response packet */
struct socket
*lcd_so
; /* Socket addr for connection */
struct sockaddr_x25
*lcd_craddr
;/* Calling address pointer */
struct sockaddr_x25
*lcd_ceaddr
;/* Called address pointer */
struct mbuf
*lcd_facilities
; /* user supplied facilities for cr */
time_t lcd_stime
; /* time circuit established */
long lcd_txcnt
; /* Data packet transmit count */
long lcd_rxcnt
; /* Data packet receive count */
short lcd_intrcnt
; /* Interrupt packet transmit count */
struct pklcd
*lcd_listen
; /* Next lcd on listen queue */
struct pkcb
*lcd_pkp
; /* Network this lcd is attached to */
struct mbuf
*lcd_cps
; /* Complete Packet Sequence reassembly*/
long lcd_cpsmax
; /* Max length for CPS */
struct sockaddr_x25 lcd_faddr
; /* Remote Address (Calling) */
struct sockaddr_x25 lcd_laddr
; /* Local Address (Called) */
struct sockbuf lcd_sb
; /* alternate for datagram service */
* Per network information, allocated dynamically
* when a new network is configured.
struct x25_ifaddr
*pk_ia
; /* backpointer to ifaddr */
int (*pk_lloutput
) (); /* link level output procedure */
caddr_t pk_llnext
; /* handle for next level down */
int (*pk_start
) (); /* connect, confirm method */
struct x25config
*pk_xcp
; /* network specific configuration */
short pk_state
; /* packet level status */
struct x25config pk_xc
; /* network specific configuration */
struct pklcd
**pk_chan
; /* actual size == xc_maxlcn+1 */
#define pk_maxlcn pk_xc.xc_maxlcn /* local copy of xc_maxlcn */
* Interface address, x25 version. Exactly one of these structures is
* allocated for each interface with an x25 address.
* The ifaddr structure conatins the protocol-independent part
* of the structure, and is assumed to be first.
struct ifaddr ia_ifa
; /* protocol-independent info */
#define ia_ifp ia_ifa.ifa_ifp
#define ia_flags ia_ifa.ifa_flags
struct pkcb ia_pkcb
; /* per network information */
#define ia_maxlcn ia_pkcb.pk_maxlcn
#define ia_chan ia_pkcb.pk_chan
#define ia_xc ia_pkcb.pk_xc
#define ia_xcp ia_pkcb.pk_xcp
struct sockaddr_x25 ia_sockmask
; /* reserve space for netmask */
* ``Link-Level'' extension to Routing Entry for upper level
* packet switching via X.25 virtual circuits.
struct llinfo_x25
*lx_next
; /* chain together in linked list */
struct llinfo_x25
*lx_prev
; /* chain together in linked list */
struct rtentry
*lx_rt
; /* back pointer to route */
struct pklcd
*lx_lcd
; /* local connection block */
struct x25_ifaddr
*lx_ia
; /* may not be same as rt_ifa */
int lx_state
; /* can't trust lcd->lcd_state */
int lx_timer
; /* for idle timeout */
int lx_family
; /* for dispatch */
/* States for lx_state */
#define LXS_DISCONNECTING 5
#define LXF_VALID 0x1 /* Circuit is live, etc. */
#define LXF_RTHELD 0x2 /* this lcb references rtentry */
#define LXF_LISTEN 0x4 /* accepting incoming calls */
struct pkcb
*pkcbhead
; /* head of linked list of networks */
struct pklcd
*pk_listenhead
;
struct pklcd
*pk_attach();
char *pk_name
[], *pk_state
[];
int pk_t20
, pk_t21
, pk_t22
, pk_t23
;