1 | /* |
---|
2 | * Copyright (c) 2017 embedded brains GmbH. All rights reserved. |
---|
3 | * |
---|
4 | * embedded brains GmbH |
---|
5 | * Dornierstr. 4 |
---|
6 | * 82178 Puchheim |
---|
7 | * Germany |
---|
8 | * <rtems@embedded-brains.de> |
---|
9 | * |
---|
10 | * Redistribution and use in source and binary forms, with or without |
---|
11 | * modification, are permitted provided that the following conditions |
---|
12 | * are met: |
---|
13 | * 1. Redistributions of source code must retain the above copyright |
---|
14 | * notice, this list of conditions and the following disclaimer. |
---|
15 | * 2. Redistributions in binary form must reproduce the above copyright |
---|
16 | * notice, this list of conditions and the following disclaimer in the |
---|
17 | * documentation and/or other materials provided with the distribution. |
---|
18 | * |
---|
19 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
---|
20 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
---|
21 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
---|
22 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
---|
23 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
---|
24 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
---|
25 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
---|
26 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
---|
27 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
---|
28 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
---|
29 | * SUCH DAMAGE. |
---|
30 | */ |
---|
31 | |
---|
32 | #include <sys/types.h> |
---|
33 | #include <sys/ioctl.h> |
---|
34 | #include <sys/socket.h> |
---|
35 | |
---|
36 | #include <net/if.h> |
---|
37 | #include <net/if_var.h> |
---|
38 | |
---|
39 | #include <string.h> |
---|
40 | #include <unistd.h> |
---|
41 | |
---|
42 | #include <rtems/bsd/zerocopy.h> |
---|
43 | |
---|
44 | rtems_bsd_if_input |
---|
45 | rtems_bsd_set_if_input(const char *ifname, |
---|
46 | rtems_bsd_if_input_init init, rtems_bsd_if_input if_input, void *arg) |
---|
47 | { |
---|
48 | struct rtems_ifinputreq ifr; |
---|
49 | int s; |
---|
50 | int rv; |
---|
51 | |
---|
52 | s = socket(AF_INET, SOCK_DGRAM, 0); |
---|
53 | if (s < 0) { |
---|
54 | return (NULL); |
---|
55 | } |
---|
56 | |
---|
57 | memset(&ifr, 0, sizeof(ifr)); |
---|
58 | strlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name)); |
---|
59 | ifr.arg = arg; |
---|
60 | ifr.init = init; |
---|
61 | ifr.new_if_input = if_input; |
---|
62 | |
---|
63 | rv = ioctl(s, RTEMS_SIOSIFINPUT, (caddr_t)&ifr); |
---|
64 | close(s); |
---|
65 | |
---|
66 | if (rv != 0) { |
---|
67 | return (NULL); |
---|
68 | } |
---|
69 | |
---|
70 | return (ifr.old_if_input); |
---|
71 | } |
---|