Add rtems_bsd_get_ethernet_addr()

1 files changed, 74 insertions, 0 deletions

diff --git a/rtemsbsd/rtems/rtems-bsd-get-ethernet-addr.c b/rtemsbsd/rtems/rtems-bsd-get-ethernet-addr.c
new file mode 100644
index 00000000..b6b5380b
--- /dev/null
+++ b/rtemsbsd/rtems/rtems-bsd-get-ethernet-addr.c
@@ -0,0 +1,74 @@
+/*
+ * Copyright (c) 2014 embedded brains GmbH.  All rights reserved.
+ *
+ *  embedded brains GmbH
+ *  Dornierstr. 4
+ *  82178 Puchheim
+ *  Germany
+ *  <rtems@embedded-brains.de>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <rtems/bsd/util.h>
+
+#include <sys/cdefs.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+
+#include <net/if_dl.h>
+
+#include <errno.h>
+#include <ifaddrs.h>
+#include <string.h>
+
+int
+rtems_bsd_get_ethernet_addr(const char *ifname, uint8_t eaddr[ETHER_ADDR_LEN])
+{
+	int rv;
+	struct ifaddrs *ifa;
+
+	rv = getifaddrs(&ifa);
+	if (rv == 0) {
+		struct ifaddrs *cur;
+
+		for (cur = ifa; cur != NULL; cur = cur->ifa_next) {
+			if (strcmp(cur->ifa_name, ifname) == 0 &&
+			    cur->ifa_addr->sa_family == AF_LINK) {
+				const struct sockaddr_dl *dl =
+				    (const struct sockaddr_dl *) cur->ifa_addr;
+
+				memcpy(&eaddr[0], LLADDR(dl), ETHER_ADDR_LEN);
+				break;
+			}
+		}
+
+		freeifaddrs(ifa);
+
+		if (cur == NULL) {
+			errno = ENXIO;
+			rv = -1;
+		}
+	}
+
+	return rv;
+}