1/*-
2 * Copyright (c) 2004 Ruslan Ermilov
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 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
| 1/*-
2 * Copyright (c) 2004 Ruslan Ermilov
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 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
|
26 * $FreeBSD: head/sys/netgraph/ng_hub.c 128371 2004-04-17 23:52:57Z ru $
| 26 * $FreeBSD: head/sys/netgraph/ng_hub.c 131155 2004-06-26 22:24:16Z julian $
|
27 */
28
29#include <sys/param.h>
30#include <sys/errno.h>
31#include <sys/kernel.h>
32#include <sys/mbuf.h>
33#include <sys/systm.h>
34
35#include <netgraph/ng_message.h>
36#include <netgraph/ng_hub.h>
37#include <netgraph/netgraph.h>
38
39static ng_constructor_t ng_hub_constructor;
40static ng_rcvdata_t ng_hub_rcvdata;
41static ng_disconnect_t ng_hub_disconnect;
42
43static struct ng_type ng_hub_typestruct = {
44 .version = NG_ABI_VERSION,
45 .name = NG_HUB_NODE_TYPE,
46 .constructor = ng_hub_constructor,
47 .rcvdata = ng_hub_rcvdata,
48 .disconnect = ng_hub_disconnect,
49};
50NETGRAPH_INIT(hub, &ng_hub_typestruct);
51
52
53static int
54ng_hub_constructor(node_p node)
55{
56
57 return (0);
58}
59
60static int
61ng_hub_rcvdata(hook_p hook, item_p item)
62{
63 const node_p node = NG_HOOK_NODE(hook);
64 int error = 0;
65 hook_p hook2;
66 struct mbuf * const m = NGI_M(item), *m2;
| 27 */
28
29#include <sys/param.h>
30#include <sys/errno.h>
31#include <sys/kernel.h>
32#include <sys/mbuf.h>
33#include <sys/systm.h>
34
35#include <netgraph/ng_message.h>
36#include <netgraph/ng_hub.h>
37#include <netgraph/netgraph.h>
38
39static ng_constructor_t ng_hub_constructor;
40static ng_rcvdata_t ng_hub_rcvdata;
41static ng_disconnect_t ng_hub_disconnect;
42
43static struct ng_type ng_hub_typestruct = {
44 .version = NG_ABI_VERSION,
45 .name = NG_HUB_NODE_TYPE,
46 .constructor = ng_hub_constructor,
47 .rcvdata = ng_hub_rcvdata,
48 .disconnect = ng_hub_disconnect,
49};
50NETGRAPH_INIT(hub, &ng_hub_typestruct);
51
52
53static int
54ng_hub_constructor(node_p node)
55{
56
57 return (0);
58}
59
60static int
61ng_hub_rcvdata(hook_p hook, item_p item)
62{
63 const node_p node = NG_HOOK_NODE(hook);
64 int error = 0;
65 hook_p hook2;
66 struct mbuf * const m = NGI_M(item), *m2;
|
67 meta_p const meta = NGI_META(item);
68 meta_p meta2;
| |
69 int nhooks;
70
71 if ((nhooks = NG_NODE_NUMHOOKS(node)) == 1) {
72 NG_FREE_ITEM(item);
73 return (0);
74 }
75 LIST_FOREACH(hook2, &node->nd_hooks, hk_hooks) {
76 if (hook2 == hook)
77 continue;
78 if (--nhooks == 1)
79 NG_FWD_ITEM_HOOK(error, item, hook2);
80 else {
81 if ((m2 = m_dup(m, M_DONTWAIT)) == NULL) {
82 NG_FREE_ITEM(item);
83 return (ENOBUFS);
84 }
| 67 int nhooks;
68
69 if ((nhooks = NG_NODE_NUMHOOKS(node)) == 1) {
70 NG_FREE_ITEM(item);
71 return (0);
72 }
73 LIST_FOREACH(hook2, &node->nd_hooks, hk_hooks) {
74 if (hook2 == hook)
75 continue;
76 if (--nhooks == 1)
77 NG_FWD_ITEM_HOOK(error, item, hook2);
78 else {
79 if ((m2 = m_dup(m, M_DONTWAIT)) == NULL) {
80 NG_FREE_ITEM(item);
81 return (ENOBUFS);
82 }
|
85 if (meta != NULL) {
86 if ((meta2 = ng_copy_meta(meta)) == NULL) {
87 m_freem(m2);
88 NG_FREE_ITEM(item);
89 return (ENOMEM);
90 }
91 } else
92 meta2 = NULL;
93 NG_SEND_DATA(error, hook2, m2, meta2);
| 83 NG_SEND_DATA_ONLY(error, hook2, m2);
|
94 if (error)
95 continue; /* don't give up */
96 }
97 }
98
99 return (error);
100}
101
102static int
103ng_hub_disconnect(hook_p hook)
104{
105
106 if (NG_NODE_NUMHOOKS(NG_HOOK_NODE(hook)) == 0 &&
107 NG_NODE_IS_VALID(NG_HOOK_NODE(hook)))
108 ng_rmnode_self(NG_HOOK_NODE(hook));
109 return (0);
110}
| 84 if (error)
85 continue; /* don't give up */
86 }
87 }
88
89 return (error);
90}
91
92static int
93ng_hub_disconnect(hook_p hook)
94{
95
96 if (NG_NODE_NUMHOOKS(NG_HOOK_NODE(hook)) == 0 &&
97 NG_NODE_IS_VALID(NG_HOOK_NODE(hook)))
98 ng_rmnode_self(NG_HOOK_NODE(hook));
99 return (0);
100}
|