1 /* $FreeBSD: src/sys/netnatm/natm_pcb.c,v 1.6.6.1 2000/08/03 18:56:28 peter Exp $ */
2 /* $DragonFly: src/sys/netproto/natm/natm_pcb.c,v 1.9 2008/01/05 14:02:40 swildner Exp $ */
3 /* $NetBSD: natm_pcb.c,v 1.4 1996/11/09 03:26:27 chuck Exp $ */
7 * Copyright (c) 1996 Charles D. Cranor and Washington University.
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
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 Charles D. Cranor and
21 * Washington University.
22 * 4. The name of the author may not be used to endorse or promote products
23 * derived from this software without specific prior written permission.
25 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
26 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
27 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
28 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
29 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
30 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
31 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
32 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
33 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
34 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
38 * atm_pcb.c: manage atm protocol control blocks and keep IP and NATM
39 * from trying to use each other's VCs.
42 #include <sys/param.h>
43 #include <sys/systm.h>
44 #include <sys/malloc.h>
45 #include <sys/socket.h>
46 #include <sys/socketvar.h>
47 #include <sys/thread2.h>
51 #include <netinet/in.h>
55 struct npcblist natm_pcbs
;
58 * npcb_alloc: allocate a npcb [in the free state]
66 MALLOC(npcb
, struct natmpcb
*, sizeof(*npcb
), M_PCB
, wait
| M_ZERO
);
69 if (wait
== M_WAITOK
&& npcb
== NULL
) panic("npcb_alloc: MALLOC didn't wait");
73 npcb
->npcb_flags
= NPCB_FREE
;
79 * npcb_free: free a npcb
83 npcb_free(struct natmpcb
*npcb
, int op
)
87 if ((npcb
->npcb_flags
& NPCB_FREE
) == 0) {
88 LIST_REMOVE(npcb
, pcblist
);
89 npcb
->npcb_flags
= NPCB_FREE
;
91 if (op
== NPCB_DESTROY
) {
93 npcb
->npcb_flags
= NPCB_DRAIN
; /* flag for distruction */
95 FREE(npcb
, M_PCB
); /* kill it! */
104 * npcb_add: add or remove npcb from main list
109 npcb_add(struct natmpcb
*npcb
, struct ifnet
*ifp
, int vci
, int vpi
)
111 struct natmpcb
*cpcb
= NULL
; /* current pcb */
118 for (cpcb
= natm_pcbs
.lh_first
; cpcb
!= NULL
;
119 cpcb
= cpcb
->pcblist
.le_next
) {
120 if (ifp
== cpcb
->npcb_ifp
&& vci
== cpcb
->npcb_vci
&& vpi
== cpcb
->npcb_vpi
)
125 * add & something already there?
130 goto done
; /* fail */
134 * need to allocate a pcb?
138 cpcb
= npcb_alloc(M_NOWAIT
); /* could be called from lower half */
140 goto done
; /* fail */
145 cpcb
->npcb_ifp
= ifp
;
146 cpcb
->ipaddr
.s_addr
= 0;
147 cpcb
->npcb_vci
= vci
;
148 cpcb
->npcb_vpi
= vpi
;
149 cpcb
->npcb_flags
= NPCB_CONNECTED
;
151 LIST_INSERT_HEAD(&natm_pcbs
, cpcb
, pcblist
);
167 struct natmpcb
*cpcb
;
169 kprintf("npcb dump:\n");
170 for (cpcb
= natm_pcbs
.lh_first
; cpcb
!= NULL
;
171 cpcb
= cpcb
->pcblist
.le_next
) {
172 kprintf("if=%s, vci=%d, vpi=%d, IP=0x%x, sock=%p, flags=0x%x, inq=%d\n",
173 cpcb
->npcb_ifp
->if_xname
, cpcb
->npcb_vci
, cpcb
->npcb_vpi
,
174 cpcb
->ipaddr
.s_addr
, cpcb
->npcb_socket
,
175 cpcb
->npcb_flags
, cpcb
->npcb_inq
);