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ether_calls revision 1.1 
      1 $NetBSD: ether_calls,v 1.1 2025/10/12 23:41:08 thorpej Exp $
      2 
      3 /*-
      4  * Copyright (c) 2025 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Jason R. Thorpe.
      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 NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 /*
     33  * Device calls used by the Ethernet subsystem.
     34  */
     35 
     36 subsystem ether;
     37 
     38 #include <net/if_ether.h>
     39 
     40 /*
     41  * ether-get-mac-address
     42  *
     43  * Retrieve the MAC address for the Ethernet interface associated
     44  * with the device handle.
     45  *
     46  * While it is common for platform device trees to provide the MAC
     47  * address in a property, some platforms may use single system-wide
     48  * MAC address in addition to interface-specific addresses, and the
     49  * rules about which one to use on a given interface are encoded into
     50  * the device tree itself, hence this hook.
     51  */
     52 ether-get-mac-address {
     53 	/* This buffer is assumed to be ETHER_ADDR_LEN bytes in size. */
     54 	uint8_t *	enaddr;		/* OUT */
     55 };
     56