1 files changed, 71 insertions, 0 deletions
diff --git a/src/link/if_ether.c b/src/link/if_ether.c
new file mode 100644
index 0000000..e0db260
--- /dev/null
+++ b/src/link/if_ether.c
@@ -0,0 +1,71 @@
+/*
+ * Copyright (c) 2023-2025 Ian Marco Moffett and the Osmora Team.
+ * All rights reserved.
+ *
+ * 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.
+ * 3. Neither the name of Hyra nor the names of its
+ *    contributors may be used to endorse or promote products derived from
+ *    this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT OWNER 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 <sys/errno.h>
+#include <byteswap.h>
+#include <string.h>
+#include "if_ether.h"
+
+/*
+ * Using the protocol ID 0xFD for testing,
+ * see RFC 3692
+ */
+#define PROTO_ID 0xFD00
+
+/* 48-bit mask for MAC addresses */
+#define MAC_MASK 0xFFFFFFFFFFFF
+
+#include <stdio.h>
+int
+ether_load_route(mac_addr_t src, mac_addr_t dest, struct ether_hdr *res)
+{
+    uint32_t *p;
+
+    if (res == NULL) {
+        return -EINVAL;
+    }
+
+    /* Set up the source */
+    res->source[0] = (src >> 40) & 0xFF;
+    res->source[1] = (src >> 32) & 0xFF;
+    res->source[2] = (src >> 24) & 0xFF;
+    res->source[3] = (src >> 16) & 0xFF;
+    res->source[4] = (src >> 8) & 0xFF;
+    res->source[5] = src & 0xFF;
+
+    /* Set up the destination */
+    res->dest[0] = (dest >> 40) & 0xFF;
+    res->dest[1] = (dest >> 32) & 0xFF;
+    res->dest[2] = (dest >> 24) & 0xFF;
+    res->dest[3] = (dest >> 16) & 0xFF;
+    res->dest[4] = (dest >> 8) & 0xFF;
+    res->dest[5] = dest & 0xFF;
+    res->proto = PROTO_ID;
+    return 0;
+}