3 * Copyright (c) 1999-2000, Vitaly V Belekhov
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice unmodified, this list of conditions, and the following
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 * $FreeBSD: src/sys/netgraph/ng_split.c,v 1.7 2005/08/29 13:47:08 glebius Exp $
31 #include <sys/param.h>
32 #include <sys/systm.h>
33 #include <sys/errno.h>
34 #include <sys/kernel.h>
35 #include <sys/malloc.h>
37 #include <sys/sockio.h>
38 #include <sys/socket.h>
39 #include <sys/syslog.h>
41 #include "ng_message.h"
45 /* Netgraph methods */
46 static ng_constructor_t ng_split_constructor
;
47 static ng_shutdown_t ng_split_shutdown
;
48 static ng_newhook_t ng_split_newhook
;
49 static ng_rcvdata_t ng_split_rcvdata
;
50 static ng_disconnect_t ng_split_disconnect
;
52 /* Node type descriptor */
53 static struct ng_type typestruct
= {
54 .version
= NG_ABI_VERSION
,
55 .name
= NG_SPLIT_NODE_TYPE
,
56 .constructor
= ng_split_constructor
,
57 .shutdown
= ng_split_shutdown
,
58 .newhook
= ng_split_newhook
,
59 .rcvdata
= ng_split_rcvdata
,
60 .disconnect
= ng_split_disconnect
,
62 NETGRAPH_INIT(ng_split
, &typestruct
);
64 /* Node private data */
65 struct ng_split_private
{
69 node_p node
; /* Our netgraph node */
71 typedef struct ng_split_private
*priv_p
;
73 /************************************************************************
75 ************************************************************************/
78 * Constructor for a node
81 ng_split_constructor(node_p node
)
86 priv
= kmalloc(sizeof(*priv
), M_NETGRAPH
,
87 M_ZERO
| M_WAITOK
| M_NULLOK
);
91 /* Link together node and private info */
92 NG_NODE_SET_PRIVATE(node
, priv
);
100 * Give our ok for a hook to be added
103 ng_split_newhook(node_p node
, hook_p hook
, const char *name
)
105 priv_p priv
= NG_NODE_PRIVATE(node
);
108 if (strcmp(name
, NG_SPLIT_HOOK_MIXED
) == 0) {
109 localhook
= &priv
->mixed
;
110 } else if (strcmp(name
, NG_SPLIT_HOOK_IN
) == 0) {
111 localhook
= &priv
->in
;
112 } else if (strcmp(name
, NG_SPLIT_HOOK_OUT
) == 0) {
113 localhook
= &priv
->out
;
117 if (*localhook
!= NULL
)
120 NG_HOOK_SET_PRIVATE(hook
, localhook
);
126 * Recive data from a hook.
129 ng_split_rcvdata(hook_p hook
, item_p item
)
131 const priv_p priv
= NG_NODE_PRIVATE(NG_HOOK_NODE(hook
));
134 if (hook
== priv
->out
) {
135 kprintf("ng_split: got packet from out hook!\n");
138 } else if ((hook
== priv
->in
) && (priv
->mixed
!= NULL
)) {
139 NG_FWD_ITEM_HOOK(error
, item
, priv
->mixed
);
140 } else if ((hook
== priv
->mixed
) && (priv
->out
!= NULL
)) {
141 NG_FWD_ITEM_HOOK(error
, item
, priv
->out
);
151 ng_split_shutdown(node_p node
)
153 const priv_p priv
= NG_NODE_PRIVATE(node
);
155 NG_NODE_SET_PRIVATE(node
, NULL
);
157 kfree(priv
, M_NETGRAPH
);
166 ng_split_disconnect(hook_p hook
)
168 hook_p
*localhook
= NG_HOOK_PRIVATE(hook
);
170 KASSERT(localhook
!= NULL
, ("%s: null info", __func__
));
172 if ((NG_NODE_NUMHOOKS(NG_HOOK_NODE(hook
)) == 0)
173 && (NG_NODE_IS_VALID(NG_HOOK_NODE(hook
)))) {
174 ng_rmnode_self(NG_HOOK_NODE(hook
));