246 lines
9.3 KiB
C
246 lines
9.3 KiB
C
/*
|
|
* 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 1.7 1995/11/21 12:54:12 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 contains 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)))
|
|
|
|
/*
|
|
* miscellaneous 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
|