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- /* $Id: ethernet.c 1757 2007-03-22 05:38:56Z aturner $ */
- /*
- * Copyright (c) 2006-2007 Aaron Turner.
- * 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 names of the copyright owners 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 ``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 AUTHORS OR COPYRIGHT HOLDERS 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 "tcpedit.h"
- #include "dlt_plugins-int.h"
- #include <assert.h>
- #include <string.h>
- /*
- * takes a ptr to an ethernet address and returns
- * 1 if it is unicast or 0 if it is multicast or
- * broadcast.
- */
- int
- is_unicast_ethernet(tcpeditdlt_t *ctx, const u_char *ether)
- {
-
- assert(ctx);
- assert(ether);
-
- /* is broadcast? */
- if (memcmp(ether, BROADCAST_MAC, ETHER_ADDR_LEN) == 0)
- return 0;
-
- /* Multicast addresses' leading octet are odd */
- if ((ether[0] & 0x01) == 0x01)
- return 0;
-
- /* everything else is unicast */
- return 1;
- }
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