2 * Copyright (c) 1983, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 4. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 static const char rcsid[] =
35 #include <sys/types.h>
36 #include <sys/ioctl.h>
37 #include <sys/socket.h>
47 #include <net/if_dl.h>
48 #include <net/if_types.h>
49 #include <net/ethernet.h>
53 static struct ifreq link_ridreq;
56 link_status(int s __unused, const struct ifaddrs *ifa)
58 /* XXX no const 'cuz LLADDR is defined wrong */
59 struct sockaddr_dl *sdl = (struct sockaddr_dl *) ifa->ifa_addr;
61 if (sdl != NULL && sdl->sdl_alen > 0) {
62 if ((sdl->sdl_type == IFT_ETHER ||
63 sdl->sdl_type == IFT_L2VLAN ||
64 sdl->sdl_type == IFT_BRIDGE) &&
65 sdl->sdl_alen == ETHER_ADDR_LEN)
66 printf("\tether %s\n",
67 ether_ntoa((struct ether_addr *)LLADDR(sdl)));
69 int n = sdl->sdl_nlen > 0 ? sdl->sdl_nlen + 1 : 0;
71 printf("\tlladdr %s\n", link_ntoa(sdl) + n);
73 /* Best-effort (i.e. failures are silent) to get original
74 * hardware address, as read by NIC driver at attach time. Only
75 * applies to Ethernet NICs (IFT_ETHER). However, laggX
76 * interfaces claim to be IFT_ETHER, and re-type their component
77 * Ethernet NICs as IFT_IEEE8023ADLAG. So, check for both. If
78 * the MAC is zeroed, then it's actually a lagg.
80 if ((sdl->sdl_type == IFT_ETHER ||
81 sdl->sdl_type == IFT_IEEE8023ADLAG) &&
82 sdl->sdl_alen == ETHER_ADDR_LEN) {
86 static const u_char laggaddr[6] = {0};
88 strncpy(ifr.ifr_name, ifa->ifa_name,
89 sizeof(ifr.ifr_name));
90 memcpy(&ifr.ifr_addr, ifa->ifa_addr,
91 sizeof(ifa->ifa_addr->sa_len));
92 ifr.ifr_addr.sa_family = AF_LOCAL;
93 if ((sock_hw = socket(AF_LOCAL, SOCK_DGRAM, 0)) < 0) {
94 warn("socket(AF_LOCAL,SOCK_DGRAM)");
97 rc = ioctl(sock_hw, SIOCGHWADDR, &ifr);
102 if (memcmp(ifr.ifr_addr.sa_data, laggaddr, sdl->sdl_alen) == 0) {
105 printf("\thwaddr %s\n", ether_ntoa((const struct ether_addr *)
106 &ifr.ifr_addr.sa_data));
112 link_getaddr(const char *addr, int which)
115 struct sockaddr_dl sdl;
116 struct sockaddr *sa = &link_ridreq.ifr_addr;
119 errx(1, "can't set link-level netmask or broadcast");
120 if ((temp = malloc(strlen(addr) + 2)) == NULL)
121 errx(1, "malloc failed");
123 strcpy(temp + 1, addr);
124 sdl.sdl_len = sizeof(sdl);
125 link_addr(temp, &sdl);
127 if (sdl.sdl_alen > sizeof(sa->sa_data))
128 errx(1, "malformed link-level address");
129 sa->sa_family = AF_LINK;
130 sa->sa_len = sdl.sdl_alen;
131 bcopy(LLADDR(&sdl), sa->sa_data, sdl.sdl_alen);
134 static struct afswtch af_link = {
137 .af_status = link_status,
138 .af_getaddr = link_getaddr,
139 .af_aifaddr = SIOCSIFLLADDR,
140 .af_addreq = &link_ridreq,
142 static struct afswtch af_ether = {
145 .af_status = link_status,
146 .af_getaddr = link_getaddr,
147 .af_aifaddr = SIOCSIFLLADDR,
148 .af_addreq = &link_ridreq,
150 static struct afswtch af_lladdr = {
153 .af_status = link_status,
154 .af_getaddr = link_getaddr,
155 .af_aifaddr = SIOCSIFLLADDR,
156 .af_addreq = &link_ridreq,
159 static __constructor void
162 af_register(&af_link);
163 af_register(&af_ether);
164 af_register(&af_lladdr);