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
32 #include <sys/param.h>
33 #include <sys/systm.h>
34 #include <sys/errno.h>
35 #include <sys/kernel.h>
36 #include <sys/malloc.h>
38 #include <sys/errno.h>
39 #include <sys/sockio.h>
40 #include <sys/socket.h>
41 #include <sys/syslog.h>
43 #include <netgraph/ng_message.h>
44 #include <netgraph/netgraph.h>
45 #include <netgraph/ng_split.h>
47 /* Netgraph methods */
48 static ng_constructor_t ng_split_constructor;
49 static ng_shutdown_t ng_split_shutdown;
50 static ng_newhook_t ng_split_newhook;
51 static ng_rcvdata_t ng_split_rcvdata;
52 static ng_disconnect_t ng_split_disconnect;
54 /* Node type descriptor */
55 static struct ng_type typestruct = {
69 NETGRAPH_INIT(ng_split, &typestruct);
71 /* Node private data */
72 struct ng_split_private {
76 node_p node; /* Our netgraph node */
78 typedef struct ng_split_private *priv_p;
80 /************************************************************************
82 ************************************************************************/
85 * Constructor for a node
88 ng_split_constructor(node_p node)
93 MALLOC(priv, priv_p, sizeof(*priv), M_NETGRAPH, M_ZERO | M_NOWAIT);
96 bzero(priv, sizeof(*priv));
98 /* Link together node and private info */
99 NG_NODE_SET_PRIVATE(node, priv);
107 * Give our ok for a hook to be added
110 ng_split_newhook(node_p node, hook_p hook, const char *name)
112 priv_p priv = NG_NODE_PRIVATE(node);
115 if (strcmp(name, NG_SPLIT_HOOK_MIXED) == 0) {
116 localhook = &priv->mixed;
117 } else if (strcmp(name, NG_SPLIT_HOOK_IN) == 0) {
118 localhook = &priv->in;
119 } else if (strcmp(name, NG_SPLIT_HOOK_OUT) == 0) {
120 localhook = &priv->out;
122 return (EPFNOSUPPORT);
125 if (*localhook != NULL)
128 NG_HOOK_SET_PRIVATE(hook, localhook);
134 * Recive data from a hook.
137 ng_split_rcvdata(hook_p hook, item_p item)
139 const priv_p priv = NG_NODE_PRIVATE(NG_HOOK_NODE(hook));
142 if (hook == priv->out) {
143 printf("ng_split: got packet from out hook!\n");
146 } else if ((hook == priv->in) && (priv->mixed != NULL)) {
147 NG_FWD_ITEM_HOOK(error, item, priv->mixed);
148 } else if ((hook == priv->mixed) && (priv->out != NULL)) {
149 NG_FWD_ITEM_HOOK(error, item, priv->out);
156 ng_split_shutdown(node_p node)
158 const priv_p priv = NG_NODE_PRIVATE(node);
160 NG_NODE_SET_PRIVATE(node, NULL);
162 FREE(priv, M_NETGRAPH);
171 ng_split_disconnect(hook_p hook)
173 hook_p *localhook = NG_HOOK_PRIVATE(hook);
175 KASSERT(localhook != NULL, ("%s: null info", __func__));
177 if ((NG_NODE_NUMHOOKS(NG_HOOK_NODE(hook)) == 0)
178 && (NG_NODE_IS_VALID(NG_HOOK_NODE(hook)))) {
179 ng_rmnode_self(NG_HOOK_NODE(hook));