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37 * Author: Julian Elisher <julian@freebsd.org>
40 * $Whistle: ng_hole.c,v 1.10 1999/11/01 09:24:51 julian Exp $
44 * This node is a 'black hole' that simply discards everything it receives
47 #include <sys/param.h>
48 #include <sys/systm.h>
49 #include <sys/kernel.h>
50 #include <sys/malloc.h>
52 #include <netgraph/ng_message.h>
53 #include <netgraph/netgraph.h>
54 #include <netgraph/ng_hole.h>
56 /* Netgraph methods */
57 static ng_constructor_t ngh_cons;
58 static ng_rcvdata_t ngh_rcvdata;
59 static ng_disconnect_t ngh_disconnect;
61 static struct ng_type typestruct = {
64 NULL, /* modeventhand_t */
65 ngh_cons, /* ng_constructor_t */
66 NULL, /* ng_rcvmsg_t */
67 NULL, /* ng_shutdown_t */
68 NULL, /* ng_newhook_t */
69 NULL, /* ng_findhook_t */
70 NULL, /* ng_connect_t */
71 ngh_rcvdata, /* ng_rcvdata_t */
72 ngh_disconnect, /* ng_disconnect_t */
75 NETGRAPH_INIT(hole, &typestruct);
78 * Be obliging. but no work to do.
90 ngh_rcvdata(hook_p hook, item_p item)
100 ngh_disconnect(hook_p hook)
102 if (NG_NODE_NUMHOOKS(NG_HOOK_NODE(hook)) == 0)
103 ng_rmnode_self(NG_HOOK_NODE(hook));