NetBSD/sys/netccitt/pk_var.h

180 lines
7.1 KiB
C

/*
* Copyright (c) University of British Columbia, 1984
* Copyright (c) 1990 The Regents of the University of California.
* All rights reserved.
*
* 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.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* from: @(#)pk_var.h 7.11 (Berkeley) 5/29/91
* $Id: pk_var.h,v 1.3 1993/05/20 04:12:25 cgd Exp $
*/
#ifndef _NETCCITT_PK_VAR_H_
#define _NETCCITT_PK_VAR_H_
/*
*
* X.25 Logical Channel Descriptor
*
*/
struct pklcd {
struct pklcd_q {
struct pklcd_q *q_forw; /* debugging chain */
struct pklcd_q *q_back; /* debugging chain */
} lcd_q;
int (*lcd_upper)(); /* switch to socket vs datagram vs ...*/
caddr_t lcd_upnext; /* reference for lcd_upper() */
int (*lcd_send)(); /* if X.25 front end, direct connect */
caddr_t lcd_downnext; /* reference for lcd_send() */
short lcd_lcn; /* Logical channel number */
short lcd_state; /* Logical Channel state */
short lcd_timer; /* Various timer values */
short lcd_dg_timer; /* to reclaim idle datagram circuits */
bool lcd_intrconf_pending; /* Interrupt confirmation pending */
octet lcd_intrdata; /* Octet of incoming intr data */
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 */
bool lcd_rxrnr_condition; /* True, if we have sent rnr */
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_facilities; /* user supplied facilities for cr */
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 */
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 pkcb {
struct pkcb *pk_next;
short pk_state; /* packet level status */
short pk_maxlcn; /* local copy of xc_maxlcn */
int (*pk_lloutput) (); /* link level output procedure */
caddr_t pk_llnext; /* handle for next level down */
struct x25config *pk_xcp; /* network specific configuration */
struct x25_ifaddr *pk_ia; /* backpointer to ifaddr */
struct pklcd **pk_chan; /* actual size == xc_maxlcn+1 */
};
/*
* 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 x25_ifaddr {
struct ifaddr ia_ifa; /* protocol-independent info */
#define ia_ifp ia_ifa.ifa_ifp
#define ia_flags ia_ifa.ifa_flags
struct x25config ia_xc; /* network specific configuration */
#define ia_maxlcn ia_xc.xc_maxlcn
int (*ia_start) (); /* connect, confirm method */
struct sockaddr_x25 ia_dstaddr; /* reserve space for route dst */
};
/*
* ``Link-Level'' extension to Routing Entry for upper level
* packet switching via X.25 virtual circuits.
*/
struct llinfo_x25 {
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_flags;
int lx_timer; /* for idle timeout */
int lx_family; /* for dispatch */
};
/* States for lx_state */
#define LXS_NEWBORN 0
#define LXS_RESOLVING 1
#define LXS_FREE 2
#define LXS_CONNECTING 3
#define LXS_CONNECTED 4
#define LXS_DISCONNECTING 5
#define LXS_LISTENING 6
/* flags */
#define LXF_VALID 0x1 /* Circuit is live, etc. */
#define LXF_RTHELD 0x2 /* this lcb references rtentry */
#define LXF_LISTEN 0x4 /* accepting incoming calls */
/*
* miscellenous debugging info
*/
struct mbuf_cache {
int mbc_size;
int mbc_num;
int mbc_oldsize;
struct mbuf **mbc_cache;
};
#if defined(KERNEL) && defined(CCITT)
struct pkcb *pkcbhead; /* head of linked list of networks */
struct pklcd *pk_listenhead;
struct pklcd *pk_attach();
extern char *pk_name[], *pk_state[];
int pk_t20, pk_t21, pk_t22, pk_t23;
#endif
#endif /* !_NETCCITT_PK_VAR_H_ */