FreeBSD/Linux Kernel Cross Reference
sys/netnatm/natm.h
1 /*-
2 * Copyright (c) 1996 Charles D. Cranor and Washington University.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by Charles D. Cranor and
16 * Washington University.
17 * 4. The name of the author may not be used to endorse or promote products
18 * derived from this software without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
21 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
22 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
23 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
24 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
25 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
29 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 *
31 * $NetBSD: natm.h,v 1.1 1996/07/04 03:20:12 chuck Exp $
32 * $FreeBSD: src/sys/netnatm/natm.h,v 1.14 2007/04/16 12:31:35 pjd Exp $
33 */
34
35 /*
36 * natm.h: native mode atm
37 */
38
39 /*
40 * supported protocols
41 */
42 #define PROTO_NATMAAL0 1
43 #define PROTO_NATMAAL5 2
44
45 /*
46 * sockaddr_natm
47 */
48
49 struct sockaddr_natm {
50 unsigned char snatm_len; /* length */
51 sa_family_t snatm_family; /* AF_NATM */
52 char snatm_if[IFNAMSIZ]; /* interface name */
53 u_int16_t snatm_vci; /* vci */
54 u_int8_t snatm_vpi; /* vpi */
55 };
56
57 #ifdef _KERNEL
58
59 /*
60 * natm protocol control block
61 */
62 struct natmpcb {
63 LIST_ENTRY(natmpcb) pcblist; /* list pointers */
64 u_int npcb_inq; /* # of our pkts in proto q */
65 struct socket *npcb_socket; /* backpointer to socket */
66 struct ifnet *npcb_ifp; /* pointer to hardware */
67 struct in_addr ipaddr; /* remote IP address, if APCB_IP */
68 u_int16_t npcb_vci; /* VCI */
69 u_int8_t npcb_vpi; /* VPI */
70 u_int8_t npcb_flags; /* flags */
71 };
72
73 /* flags */
74 #define NPCB_FREE 0x01 /* free (not on any list) */
75 #define NPCB_CONNECTED 0x02 /* connected */
76 #define NPCB_IP 0x04 /* used by IP */
77 #define NPCB_DRAIN 0x08 /* destroy as soon as inq == 0 */
78
79 /* flag arg to npcb_free */
80 #define NPCB_REMOVE 0 /* remove from global list */
81 #define NPCB_DESTROY 1 /* destroy and be free */
82
83 LIST_HEAD(npcblist, natmpcb);
84
85 /* global data structures */
86
87 extern struct mtx natm_mtx; /* global netnatm lock */
88 extern struct npcblist natm_pcbs; /* global list of pcbs */
89 #define NATM_STAT
90 #ifdef NATM_STAT
91 extern u_int natm_sodropcnt;
92 extern u_int natm_sodropbytes; /* account of droppage */
93 extern u_int natm_sookcnt;
94 extern u_int natm_sookbytes; /* account of ok */
95 #endif
96
97 /* locking macros */
98 #define NATM_LOCK_INIT() mtx_init(&natm_mtx, "natm_mtx", NULL, MTX_DEF)
99 #define NATM_LOCK() mtx_lock(&natm_mtx)
100 #define NATM_UNLOCK() mtx_unlock(&natm_mtx)
101 #define NATM_LOCK_ASSERT() mtx_assert(&natm_mtx, MA_OWNED)
102
103 /* external functions */
104
105 /* natm_pcb.c */
106 struct natmpcb *npcb_alloc(int);
107 void npcb_free(struct natmpcb *, int);
108 struct natmpcb *npcb_add(struct natmpcb *, struct ifnet *, uint16_t, uint8_t);
109
110 /* natm.c */
111 extern struct pr_usrreqs natm_usrreqs;
112
113 #ifdef SYSCTL_HANDLER_ARGS
114 int natm0_sysctl(SYSCTL_HANDLER_ARGS);
115 int natm5_sysctl(SYSCTL_HANDLER_ARGS);
116 #endif
117
118 void natmintr(struct mbuf *);
119
120 #endif
121
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