1
2/*
3 * ng_echo.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_echo.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 *
|
65 NG_ECHO_NODE_TYPE,
66 NULL,
67 NULL,
68 nge_rcvmsg,
69 NULL,
70 NULL,
71 NULL,
72 NULL,
73 nge_rcvdata,
74 nge_disconnect,
75 NULL
76};
77NETGRAPH_INIT(echo, &typestruct);
78
79/*
80 * Receive control message. We just bounce it back as a reply.
81 */
82static int
83nge_rcvmsg(node_p node, struct ng_mesg *msg, const char *retaddr,
84 struct ng_mesg **rptr, hook_p lasthook)
85{
86 if (rptr) {
87 msg->header.flags |= NGF_RESP;
88 *rptr = msg;
89 } else {
90 FREE(msg, M_NETGRAPH);
91 }
92 return (0);
93}
94
95/*
96 * Receive data
97 */
98static int
99nge_rcvdata(hook_p hook, struct mbuf *m, meta_p meta,
100 struct mbuf **ret_m, meta_p *ret_meta, struct ng_mesg **resp)
101{
102 int error = 0;
103
104 NG_SEND_DATA(error, hook, m, meta);
105 return (error);
106}
107
108/*
109 * Removal of the last link destroys the nodeo
110 */
111static int
112nge_disconnect(hook_p hook)
113{
114 if (hook->node->numhooks == 0)
115 ng_rmnode(hook->node);
116 return (0);
117}
118
| 65 NG_ECHO_NODE_TYPE,
66 NULL,
67 NULL,
68 nge_rcvmsg,
69 NULL,
70 NULL,
71 NULL,
72 NULL,
73 nge_rcvdata,
74 nge_disconnect,
75 NULL
76};
77NETGRAPH_INIT(echo, &typestruct);
78
79/*
80 * Receive control message. We just bounce it back as a reply.
81 */
82static int
83nge_rcvmsg(node_p node, struct ng_mesg *msg, const char *retaddr,
84 struct ng_mesg **rptr, hook_p lasthook)
85{
86 if (rptr) {
87 msg->header.flags |= NGF_RESP;
88 *rptr = msg;
89 } else {
90 FREE(msg, M_NETGRAPH);
91 }
92 return (0);
93}
94
95/*
96 * Receive data
97 */
98static int
99nge_rcvdata(hook_p hook, struct mbuf *m, meta_p meta,
100 struct mbuf **ret_m, meta_p *ret_meta, struct ng_mesg **resp)
101{
102 int error = 0;
103
104 NG_SEND_DATA(error, hook, m, meta);
105 return (error);
106}
107
108/*
109 * Removal of the last link destroys the nodeo
110 */
111static int
112nge_disconnect(hook_p hook)
113{
114 if (hook->node->numhooks == 0)
115 ng_rmnode(hook->node);
116 return (0);
117}
118
|