![[BACK]](/cvsweb/icons/back.gif){kind=icon}
Return to pk_var.h CVS log ![[TXT]](/cvsweb/icons/text.gif){kind=icon}
![[DIR]](/cvsweb/icons/dir.gif){kind=icon}
Up to [Net/2] / Net2 / netccitt|
Return to pk_var.h CVS log | Up to [Net/2] / Net2 / netccitt |
1.1 root 1: /*
2: * Copyright (c) University of British Columbia, 1984
3: * Copyright (c) 1990 The Regents of the University of California.
4: * All rights reserved.
5: *
6: * This code is derived from software contributed to Berkeley by
7: * the Laboratory for Computation Vision and the Computer Science Department
8: * of the University of British Columbia.
9: *
10: * Redistribution and use in source and binary forms, with or without
11: * modification, are permitted provided that the following conditions
12: * are met:
13: * 1. Redistributions of source code must retain the above copyright
14: * notice, this list of conditions and the following disclaimer.
15: * 2. Redistributions in binary form must reproduce the above copyright
16: * notice, this list of conditions and the following disclaimer in the
17: * documentation and/or other materials provided with the distribution.
18: * 3. All advertising materials mentioning features or use of this software
19: * must display the following acknowledgement:
20: * This product includes software developed by the University of
21: * California, Berkeley and its contributors.
22: * 4. Neither the name of the University nor the names of its contributors
23: * may be used to endorse or promote products derived from this software
24: * without specific prior written permission.
25: *
26: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
27: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
28: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
29: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
30: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
31: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
32: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
33: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
34: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
35: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36: * SUCH DAMAGE.
37: *
38: * @(#)pk_var.h 7.11 (Berkeley) 5/29/91
39: */
40:
41:
42: /*
43: *
44: * X.25 Logical Channel Descriptor
45: *
46: */
47:
48: struct pklcd {
49: struct pklcd_q {
50: struct pklcd_q *q_forw; /* debugging chain */
51: struct pklcd_q *q_back; /* debugging chain */
52: } lcd_q;
53: int (*lcd_upper)(); /* switch to socket vs datagram vs ...*/
54: caddr_t lcd_upnext; /* reference for lcd_upper() */
55: int (*lcd_send)(); /* if X.25 front end, direct connect */
56: caddr_t lcd_downnext; /* reference for lcd_send() */
57: short lcd_lcn; /* Logical channel number */
58: short lcd_state; /* Logical Channel state */
59: short lcd_timer; /* Various timer values */
60: short lcd_dg_timer; /* to reclaim idle datagram circuits */
61: bool lcd_intrconf_pending; /* Interrupt confirmation pending */
62: octet lcd_intrdata; /* Octet of incoming intr data */
63: char lcd_retry; /* Timer retry count */
64: char lcd_rsn; /* Seq no of last received packet */
65: char lcd_ssn; /* Seq no of next packet to send */
66: char lcd_output_window; /* Output flow control window */
67: char lcd_input_window; /* Input flow control window */
68: char lcd_last_transmitted_pr;/* Last Pr value transmitted */
69: bool lcd_rnr_condition; /* Remote in busy condition */
70: bool lcd_window_condition; /* Output window size exceeded */
71: bool lcd_reset_condition; /* True, if waiting reset confirm */
72: bool lcd_rxrnr_condition; /* True, if we have sent rnr */
73: char lcd_packetsize; /* Maximum packet size */
74: char lcd_windowsize; /* Window size - both directions */
75: octet lcd_closed_user_group; /* Closed user group specification */
76: char lcd_flags; /* copy of sockaddr_x25 op_flags */
77: struct mbuf *lcd_facilities; /* user supplied facilities for cr */
78: struct mbuf *lcd_template; /* Address of response packet */
79: struct socket *lcd_so; /* Socket addr for connection */
80: struct sockaddr_x25 *lcd_craddr;/* Calling address pointer */
81: struct sockaddr_x25 *lcd_ceaddr;/* Called address pointer */
82: time_t lcd_stime; /* time circuit established */
83: long lcd_txcnt; /* Data packet transmit count */
84: long lcd_rxcnt; /* Data packet receive count */
85: short lcd_intrcnt; /* Interrupt packet transmit count */
86: struct pklcd *lcd_listen; /* Next lcd on listen queue */
87: struct pkcb *lcd_pkp; /* Network this lcd is attached to */
88: struct mbuf *lcd_cps; /* Complete Packet Sequence reassembly*/
89: long lcd_cpsmax; /* Max length for CPS */
90: struct sockaddr_x25 lcd_faddr; /* Remote Address (Calling) */
91: struct sockaddr_x25 lcd_laddr; /* Local Address (Called) */
92: struct sockbuf lcd_sb; /* alternate for datagram service */
93: };
94:
95: /*
96: * Per network information, allocated dynamically
97: * when a new network is configured.
98: */
99:
100: struct pkcb {
101: struct pkcb *pk_next;
102: short pk_state; /* packet level status */
103: short pk_maxlcn; /* local copy of xc_maxlcn */
104: int (*pk_lloutput) (); /* link level output procedure */
105: caddr_t pk_llnext; /* handle for next level down */
106: struct x25config *pk_xcp; /* network specific configuration */
107: struct x25_ifaddr *pk_ia; /* backpointer to ifaddr */
108: struct pklcd **pk_chan; /* actual size == xc_maxlcn+1 */
109: };
110: /*
111: * Interface address, x25 version. Exactly one of these structures is
112: * allocated for each interface with an x25 address.
113: *
114: * The ifaddr structure conatins the protocol-independent part
115: * of the structure, and is assumed to be first.
116: */
117: struct x25_ifaddr {
118: struct ifaddr ia_ifa; /* protocol-independent info */
119: #define ia_ifp ia_ifa.ifa_ifp
120: #define ia_flags ia_ifa.ifa_flags
121: struct x25config ia_xc; /* network specific configuration */
122: #define ia_maxlcn ia_xc.xc_maxlcn
123: int (*ia_start) (); /* connect, confirm method */
124: struct sockaddr_x25 ia_dstaddr; /* reserve space for route dst */
125: };
126:
127: /*
128: * ``Link-Level'' extension to Routing Entry for upper level
129: * packet switching via X.25 virtual circuits.
130: */
131: struct llinfo_x25 {
132: struct llinfo_x25 *lx_next; /* chain together in linked list */
133: struct llinfo_x25 *lx_prev; /* chain together in linked list */
134: struct rtentry *lx_rt; /* back pointer to route */
135: struct pklcd *lx_lcd; /* local connection block */
136: struct x25_ifaddr *lx_ia; /* may not be same as rt_ifa */
137: int lx_state; /* can't trust lcd->lcd_state */
138: int lx_flags;
139: int lx_timer; /* for idle timeout */
140: int lx_family; /* for dispatch */
141: };
142:
143: /* States for lx_state */
144: #define LXS_NEWBORN 0
145: #define LXS_RESOLVING 1
146: #define LXS_FREE 2
147: #define LXS_CONNECTING 3
148: #define LXS_CONNECTED 4
149: #define LXS_DISCONNECTING 5
150: #define LXS_LISTENING 6
151:
152: /* flags */
153: #define LXF_VALID 0x1 /* Circuit is live, etc. */
154: #define LXF_RTHELD 0x2 /* this lcb references rtentry */
155: #define LXF_LISTEN 0x4 /* accepting incoming calls */
156:
157: /*
158: * miscellenous debugging info
159: */
160: struct mbuf_cache {
161: int mbc_size;
162: int mbc_num;
163: int mbc_oldsize;
164: struct mbuf **mbc_cache;
165: };
166:
167: #if defined(KERNEL) && defined(CCITT)
168: struct pkcb *pkcbhead; /* head of linked list of networks */
169: struct pklcd *pk_listenhead;
170: struct pklcd *pk_attach();
171:
172: extern char *pk_name[], *pk_state[];
173: int pk_t20, pk_t21, pk_t22, pk_t23;
174: #endif
This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.