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ng_hole.c (67506) ng_hole.c (69922)
1
2/*
3 * ng_hole.c
4 *
5 * Copyright (c) 1996-1999 Whistle Communications, Inc.
6 * All rights reserved.
7 *
8 * Subject to the following obligations and disclaimer of warranty, use and
9 * redistribution of this software, in source or object code forms, with or
10 * without modifications are expressly permitted by Whistle Communications;
11 * provided, however, that:
12 * 1. Any and all reproductions of the source or object code must include the
13 * copyright notice above and the following disclaimer of warranties; and
14 * 2. No rights are granted, in any manner or form, to use Whistle
15 * Communications, Inc. trademarks, including the mark "WHISTLE
16 * COMMUNICATIONS" on advertising, endorsements, or otherwise except as
17 * such appears in the above copyright notice or in the software.
18 *
19 * THIS SOFTWARE IS BEING PROVIDED BY WHISTLE COMMUNICATIONS "AS IS", AND
20 * TO THE MAXIMUM EXTENT PERMITTED BY LAW, WHISTLE COMMUNICATIONS MAKES NO
21 * REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, REGARDING THIS SOFTWARE,
22 * INCLUDING WITHOUT LIMITATION, ANY AND ALL IMPLIED WARRANTIES OF
23 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
24 * WHISTLE COMMUNICATIONS DOES NOT WARRANT, GUARANTEE, OR MAKE ANY
25 * REPRESENTATIONS REGARDING THE USE OF, OR THE RESULTS OF THE USE OF THIS
26 * SOFTWARE IN TERMS OF ITS CORRECTNESS, ACCURACY, RELIABILITY OR OTHERWISE.
27 * IN NO EVENT SHALL WHISTLE COMMUNICATIONS BE LIABLE FOR ANY DAMAGES
28 * RESULTING FROM OR ARISING OUT OF ANY USE OF THIS SOFTWARE, INCLUDING
29 * WITHOUT LIMITATION, ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
30 * PUNITIVE, OR CONSEQUENTIAL DAMAGES, PROCUREMENT OF SUBSTITUTE GOODS OR
31 * SERVICES, LOSS OF USE, DATA OR PROFITS, HOWEVER CAUSED AND UNDER 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 WHISTLE COMMUNICATIONS IS ADVISED OF THE POSSIBILITY
35 * OF SUCH DAMAGE.
36 *
37 * Author: Julian Elisher <julian@freebsd.org>
38 *
1
2/*
3 * ng_hole.c
4 *
5 * Copyright (c) 1996-1999 Whistle Communications, Inc.
6 * All rights reserved.
7 *
8 * Subject to the following obligations and disclaimer of warranty, use and
9 * redistribution of this software, in source or object code forms, with or
10 * without modifications are expressly permitted by Whistle Communications;
11 * provided, however, that:
12 * 1. Any and all reproductions of the source or object code must include the
13 * copyright notice above and the following disclaimer of warranties; and
14 * 2. No rights are granted, in any manner or form, to use Whistle
15 * Communications, Inc. trademarks, including the mark "WHISTLE
16 * COMMUNICATIONS" on advertising, endorsements, or otherwise except as
17 * such appears in the above copyright notice or in the software.
18 *
19 * THIS SOFTWARE IS BEING PROVIDED BY WHISTLE COMMUNICATIONS "AS IS", AND
20 * TO THE MAXIMUM EXTENT PERMITTED BY LAW, WHISTLE COMMUNICATIONS MAKES NO
21 * REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, REGARDING THIS SOFTWARE,
22 * INCLUDING WITHOUT LIMITATION, ANY AND ALL IMPLIED WARRANTIES OF
23 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
24 * WHISTLE COMMUNICATIONS DOES NOT WARRANT, GUARANTEE, OR MAKE ANY
25 * REPRESENTATIONS REGARDING THE USE OF, OR THE RESULTS OF THE USE OF THIS
26 * SOFTWARE IN TERMS OF ITS CORRECTNESS, ACCURACY, RELIABILITY OR OTHERWISE.
27 * IN NO EVENT SHALL WHISTLE COMMUNICATIONS BE LIABLE FOR ANY DAMAGES
28 * RESULTING FROM OR ARISING OUT OF ANY USE OF THIS SOFTWARE, INCLUDING
29 * WITHOUT LIMITATION, ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
30 * PUNITIVE, OR CONSEQUENTIAL DAMAGES, PROCUREMENT OF SUBSTITUTE GOODS OR
31 * SERVICES, LOSS OF USE, DATA OR PROFITS, HOWEVER CAUSED AND UNDER 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 WHISTLE COMMUNICATIONS IS ADVISED OF THE POSSIBILITY
35 * OF SUCH DAMAGE.
36 *
37 * Author: Julian Elisher <julian@freebsd.org>
38 *
39 * $FreeBSD: head/sys/netgraph/ng_hole.c 67506 2000-10-24 17:32:45Z julian $
39 * $FreeBSD: head/sys/netgraph/ng_hole.c 69922 2000-12-12 18:52:14Z julian $
40 * $Whistle: ng_hole.c,v 1.10 1999/11/01 09:24:51 julian Exp $
41 */
42
43/*
44 * This node is a 'black hole' that simply discards everything it receives
45 */
46
47#include <sys/param.h>
48#include <sys/kernel.h>
49#include <sys/malloc.h>
50#include <sys/mbuf.h>
51#include <netgraph/ng_message.h>
52#include <netgraph/netgraph.h>
53#include <netgraph/ng_hole.h>
54
55/* Netgraph methods */
56static ng_rcvdata_t ngh_rcvdata;
57static ng_disconnect_t ngh_disconnect;
58
59static struct ng_type typestruct = {
60 NG_VERSION,
61 NG_HOLE_NODE_TYPE,
62 NULL,
63 NULL,
64 NULL,
65 NULL,
66 NULL,
67 NULL,
68 NULL,
69 ngh_rcvdata,
40 * $Whistle: ng_hole.c,v 1.10 1999/11/01 09:24:51 julian Exp $
41 */
42
43/*
44 * This node is a 'black hole' that simply discards everything it receives
45 */
46
47#include <sys/param.h>
48#include <sys/kernel.h>
49#include <sys/malloc.h>
50#include <sys/mbuf.h>
51#include <netgraph/ng_message.h>
52#include <netgraph/netgraph.h>
53#include <netgraph/ng_hole.h>
54
55/* Netgraph methods */
56static ng_rcvdata_t ngh_rcvdata;
57static ng_disconnect_t ngh_disconnect;
58
59static struct ng_type typestruct = {
60 NG_VERSION,
61 NG_HOLE_NODE_TYPE,
62 NULL,
63 NULL,
64 NULL,
65 NULL,
66 NULL,
67 NULL,
68 NULL,
69 ngh_rcvdata,
70 ngh_rcvdata,
71 ngh_disconnect,
72 NULL
73};
74NETGRAPH_INIT(hole, &typestruct);
75
76/*
77 * Receive data
78 */
79static int
80ngh_rcvdata(hook_p hook, struct mbuf *m, meta_p meta,
70 ngh_disconnect,
71 NULL
72};
73NETGRAPH_INIT(hole, &typestruct);
74
75/*
76 * Receive data
77 */
78static int
79ngh_rcvdata(hook_p hook, struct mbuf *m, meta_p meta,
81 struct mbuf **ret_m, meta_p *ret_meta)
80 struct mbuf **ret_m, meta_p *ret_meta, struct ng_mesg **resp)
82{
83 NG_FREE_DATA(m, meta);
84 return 0;
85}
86
87/*
88 * Hook disconnection
89 */
90static int
91ngh_disconnect(hook_p hook)
92{
93 if (hook->node->numhooks == 0)
94 ng_rmnode(hook->node);
95 return (0);
96}
81{
82 NG_FREE_DATA(m, meta);
83 return 0;
84}
85
86/*
87 * Hook disconnection
88 */
89static int
90ngh_disconnect(hook_p hook)
91{
92 if (hook->node->numhooks == 0)
93 ng_rmnode(hook->node);
94 return (0);
95}