1 | /* |
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2 | * Copyright (c) 2014 embedded brains GmbH. All rights reserved. |
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3 | * |
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4 | * embedded brains GmbH |
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5 | * Dornierstr. 4 |
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6 | * 82178 Puchheim |
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7 | * Germany |
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8 | * <rtems@embedded-brains.de> |
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9 | * |
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10 | * Redistribution and use in source and binary forms, with or without |
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11 | * modification, are permitted provided that the following conditions |
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12 | * are met: |
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13 | * 1. Redistributions of source code must retain the above copyright |
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14 | * notice, this list of conditions and the following disclaimer. |
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15 | * 2. Redistributions in binary form must reproduce the above copyright |
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16 | * notice, this list of conditions and the following disclaimer in the |
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17 | * documentation and/or other materials provided with the distribution. |
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18 | * |
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19 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
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20 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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21 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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22 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
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23 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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24 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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25 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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26 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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27 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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28 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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29 | * SUCH DAMAGE. |
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30 | */ |
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31 | |
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32 | #include <rtems/bsd/util.h> |
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33 | |
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34 | #include <sys/cdefs.h> |
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35 | #include <sys/types.h> |
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36 | #include <sys/socket.h> |
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37 | |
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38 | #include <net/if_dl.h> |
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39 | |
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40 | #include <errno.h> |
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41 | #include <ifaddrs.h> |
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42 | #include <string.h> |
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43 | |
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44 | int |
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45 | rtems_bsd_get_ethernet_addr(const char *ifname, uint8_t eaddr[ETHER_ADDR_LEN]) |
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46 | { |
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47 | int rv; |
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48 | struct ifaddrs *ifa; |
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49 | |
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50 | rv = getifaddrs(&ifa); |
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51 | if (rv == 0) { |
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52 | struct ifaddrs *cur; |
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53 | |
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54 | for (cur = ifa; cur != NULL; cur = cur->ifa_next) { |
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55 | if (strcmp(cur->ifa_name, ifname) == 0 && |
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56 | cur->ifa_addr->sa_family == AF_LINK) { |
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57 | const struct sockaddr_dl *dl = |
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58 | (const struct sockaddr_dl *) cur->ifa_addr; |
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59 | |
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60 | memcpy(&eaddr[0], LLADDR(dl), ETHER_ADDR_LEN); |
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61 | break; |
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62 | } |
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63 | } |
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64 | |
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65 | freeifaddrs(ifa); |
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66 | |
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67 | if (cur == NULL) { |
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68 | errno = ENXIO; |
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69 | rv = -1; |
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70 | } |
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71 | } |
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72 | |
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73 | return rv; |
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74 | } |
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