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/*
* Copyright (c) Computing Centre, University of British Columbia, 1985
* Copyright (C) Computer Science Department IV,
* University of Erlangen-Nuremberg, Germany, 1990, 1991, 1992
* Copyright (c) 1992, 1993
* 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 the University of British Columbia and the Computer Science
* Department (IV) of the University of Erlangen-Nuremberg, Germany.
*
* 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.
*
* @(#)pk_var.h 8.1 (Berkeley) 6/10/93
* $Id: pk_var.h,v 1.6 1995/07/29 11:41:27 bde 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) __P((struct pklcd *lcp, struct mbuf *m));
/* switch to socket vs datagram vs ...*/
caddr_t lcd_upnext; /* reference for lcd_upper() */
int (*lcd_send) __P((struct pklcd *lcp));
/* 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 */
};
struct dll_ctlinfo;
/*
* Per network information, allocated dynamically
* when a new network is configured.
*/
struct pkcb {
struct pkcb_q {
struct pkcb_q *q_forw;
struct pkcb_q *q_backw;
} pk_q;
short pk_state; /* packet level status */
short pk_maxlcn; /* local copy of xc_maxlcn */
int (*pk_lloutput) __P((caddr_t, struct mbuf *, struct rtentry *));
/* link level output procedure */
caddr_t (*pk_llctlinput) __P((int, int, struct dll_ctlinfo *));
/* link level ctloutput 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 */
short pk_dxerole; /* DXE role of PLE over LLC2 */
short pk_restartcolls; /* counting RESTART collisions til resolved */
struct rtentry *pk_rt; /* back pointer to route */
struct rtentry *pk_llrt; /* pointer to reverse mapping */
u_short pk_refcount; /* ref count */
};
#define FOR_ALL_PKCBS(p) for((p) = (struct pkcb *)(pkcb_q.q_forw); \
(pkcb_q.q_forw != &pkcb_q) && ((struct pkcb_q *)(p) != &pkcb_q); \
(p) = (struct pkcb *)((p) -> pk_q.q_forw))
#define PQEMPTY (pkcb_q.q_forw == &pkcb_q)
/*
* 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 */
struct pkcb *ia_pkcb;
#define ia_maxlcn ia_xc.xc_maxlcn
int (*ia_start) __P((struct pklcd *lcp));
/* 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 */
/*
* Definitions for accessing bitfields/bitslices inside X.25 structs
*/
struct x25bitslice {
unsigned int bs_mask;
unsigned int bs_shift;
};
#define calling_addrlen 0
#define called_addrlen 1
#define q_bit 2
#define d_bit 3
#define fmt_identifier 4
#define lc_group_number 1
#define p_r 5
#define m_bit 6
#define p_s 7
#define zilch 8
#define X25GBITS(Arg, Index) (((Arg) & x25_bitslice[(Index)].bs_mask) >> x25_bitslice[(Index)].bs_shift)
#define X25SBITS(Arg, Index, Val) (Arg) |= (((Val) << x25_bitslice[(Index)].bs_shift) & x25_bitslice[(Index)].bs_mask)
#define X25CSBITS(Arg, Index, Val) (Arg) = (((Val) << x25_bitslice[(Index)].bs_shift) & x25_bitslice[(Index)].bs_mask)
extern struct x25bitslice x25_bitslice[];
#define ISOFIFTTYPE(i,t) ((i)->if_type == (t))
#define ISISO8802(i) ((ISOFIFTTYPE(i, IFT_ETHER) || \
ISOFIFTTYPE(i, IFT_ISO88023) || \
ISOFIFTTYPE(i, IFT_ISO88024) || \
ISOFIFTTYPE(i, IFT_ISO88025) || \
ISOFIFTTYPE(i, IFT_ISO88026) || \
ISOFIFTTYPE(i, IFT_P10) || \
ISOFIFTTYPE(i, IFT_P80) || \
ISOFIFTTYPE(i, IFT_FDDI)))
/*
* miscellenous debugging info
*/
struct mbuf_cache {
int mbc_size;
int mbc_num;
int mbc_oldsize;
struct mbuf **mbc_cache;
};
#if defined(KERNEL) && defined(CCITT)
extern struct pkcb_q pkcb_q;
extern struct pklcd *pk_listenhead;
void ccittintr __P((void));
struct pklcd *pk_attach __P((struct socket *so));
extern char *pk_name[], *pk_state[];
extern int pk_t20, pk_t21, pk_t22, pk_t23;
#endif
#endif
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