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Turn "ether" address family into a generic "link" family

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that could be used to set/get arbitrary length link level
addresses.  Alias "lladdr" parameter and "ether" family
to the new "link" family for backward compatibility.

PR:		bin/31476
MFC after:	1 week
This commit is contained in:
Ruslan Ermilov 2002-03-27 14:29:23 +00:00
parent c465d35466
commit 1876df83f4
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=93281
2 changed files with 55 additions and 71 deletions
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37
sbin/ifconfig/ifconfig.8
View File

@ -131,6 +131,18 @@ parameter below for more information.
.\" However, two consecutive dots imply a zero
.\" byte, and the dots are optional, if the user wishes to (carefully)
.\" count out long strings of digits in network byte order.
.Pp
The link-level
.Pq Dq link
address
is specified as a series of colon-separated hex digits.
This can be used to
e.g. set a new MAC address on an ethernet interface, though the
mechanism used is not ethernet-specific.
If the interface is already
up when this option is used, it will be briefly brought down and
then brought back up again in order to ensure that the receive
filter in the underlying ethernet hardware is properly reprogrammed.
.It Ar address_family
Specify the
address family
@ -142,14 +154,19 @@ supported are
.Dq inet ,
.Dq inet6 ,
.Dq atalk ,
.Dq ether ,
.Dq ipx ,
.\" .Dq iso ,
and
.Dq ipx .
.Dq link .
.\" and
.\" .Dq ns .
The default is
.Dq inet .
.Dq ether
and
.Dq lladdr
are synonyms for
.Dq link .
.It Ar dest_address
Specify the address of the correspondent on the other end
of a point to point link.
@ -230,10 +247,6 @@ the system will not attempt to
transmit messages through that interface.
If possible, the interface will be reset to disable reception as well.
This action does not automatically disable routes using the interface.
.It Cm ether
Another name for the
.Cm lladdr
parameter.
.\" .It Cm ipdst
.\" This is used to specify an Internet host who is willing to receive
.\" ip packets encapsulating NS packets bound for a remote network.
@ -243,18 +256,6 @@ parameter.
.\" IP encapsulation of
.\" .Tn CLNP
.\" packets is done differently.
.It Cm lladdr Ar addr
Set the link-level address on an interface.
This can be used to
e.g. set a new MAC address on an ethernet interface, though the
mechanism used is not ethernet-specific.
The address
.Ar addr
is specified as a series of colon-separated hex digits.
If the interface is already
up when this option is used, it will be briefly brought down and
then brought back up again in order to ensure that the receive
filter in the underlying ethernet hardware is properly reprogrammed.
.It Cm media Ar type
If the driver supports the media selection system, set the media type
of the interface to

89
sbin/ifconfig/ifconfig.c
View File

@ -177,7 +177,7 @@ c_func setip6vltime;
c_func2 setip6lifetime;
#endif
c_func setifipdst;
c_func setifflags, setifmetric, setifmtu, setiflladdr, setifcap;
c_func setifflags, setifmetric, setifmtu, setifcap;
c_func clone_destroy;
@ -282,7 +282,6 @@ struct cmd {
{ "compress", IFF_LINK0, setifflags },
{ "noicmp", IFF_LINK1, setifflags },
{ "mtu", NEXTARG, setifmtu },
{ "lladdr", NEXTARG, setiflladdr },
{ 0, 0, setifaddr },
{ 0, 0, setifdstaddr },
};
@ -295,8 +294,8 @@ typedef void af_status __P((int, struct rt_addrinfo *));
typedef void af_getaddr __P((const char *, int));
typedef void af_getprefix __P((const char *, int));
af_status in_status, at_status, ether_status;
af_getaddr in_getaddr, at_getaddr, ether_getaddr;
af_status in_status, at_status, link_status;
af_getaddr in_getaddr, at_getaddr, link_getaddr;
#ifndef NO_IPX
af_status ipx_status;
@ -344,7 +343,11 @@ struct afswtch {
{ "ns", AF_NS, xns_status, xns_getaddr, NULL,
SIOCDIFADDR, SIOCAIFADDR, C(ridreq), C(addreq) },
#endif
{ "ether", AF_LINK, ether_status, ether_getaddr, NULL,
{ "link", AF_LINK, link_status, link_getaddr, NULL,
0, SIOCSIFLLADDR, NULL, C(ridreq) },
{ "ether", AF_LINK, link_status, link_getaddr, NULL,
0, SIOCSIFLLADDR, NULL, C(ridreq) },
{ "lladdr", AF_LINK, link_status, link_getaddr, NULL,
0, SIOCSIFLLADDR, NULL, C(ridreq) },
#if 0 /* XXX conflicts with the media command */
#ifdef USE_IF_MEDIA
@ -610,7 +613,7 @@ main(argc, argv)
continue; /* not down */
if (namesonly) {
if (afp == NULL ||
afp->af_status != ether_status ||
afp->af_status != link_status ||
sdl->sdl_type == IFT_ETHER) {
if (need_nl)
putchar(' ');
@ -1073,30 +1076,6 @@ setifmtu(val, dummy, s, afp)
warn("ioctl (set mtu)");
}
void
setiflladdr(val, dummy, s, afp)
const char *val;
int dummy __unused;
int s;
const struct afswtch *afp;
{
struct ether_addr *ea;
ea = ether_aton(val);
if (ea == NULL) {
warn("malformed link-level address");
return;
}
strncpy(ifr.ifr_name, name, sizeof (ifr.ifr_name));
ifr.ifr_addr.sa_len = ETHER_ADDR_LEN;
ifr.ifr_addr.sa_family = AF_LINK;
bcopy(ea, ifr.ifr_addr.sa_data, ETHER_ADDR_LEN);
if (ioctl(s, SIOCSIFLLADDR, (caddr_t)&ifr) < 0)
warn("ioctl (set lladdr)");
return;
}
#define IFFBITS \
"\020\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5POINTOPOINT\6SMART\7RUNNING" \
"\10NOARP\11PROMISC\12ALLMULTI\13OACTIVE\14SIMPLEX\15LINK0\16LINK1\17LINK2" \
@ -1176,8 +1155,8 @@ status(afp, addrcount, sdl, ifm, ifam)
addrcount--;
ifam = (struct ifa_msghdr *)((char *)ifam + ifam->ifam_msglen);
}
if (allfamilies || afp->af_status == ether_status)
ether_status(s, (struct rt_addrinfo *)sdl);
if (allfamilies || afp->af_status == link_status)
link_status(s, (struct rt_addrinfo *)sdl);
#ifdef USE_IF_MEDIA
if (allfamilies || afp->af_status == media_status)
media_status(s, NULL);
@ -1195,7 +1174,7 @@ status(afp, addrcount, sdl, ifm, ifam)
printf("%s", ifs.ascii);
if (!allfamilies && !p && afp->af_status != media_status &&
afp->af_status != ether_status
afp->af_status != link_status
#ifdef USE_VLANS
&& afp->af_status != vlan_status
#endif
@ -1541,23 +1520,20 @@ xns_status(s, info)
void
ether_status(s, info)
link_status(s, info)
int s __unused;
struct rt_addrinfo *info;
{
char *cp;
int n;
struct sockaddr_dl *sdl = (struct sockaddr_dl *)info;
cp = (char *)LLADDR(sdl);
if ((n = sdl->sdl_alen) > 0) {
if (sdl->sdl_type == IFT_ETHER)
printf ("\tether ");
if (sdl->sdl_type == IFT_ETHER &&
sdl->sdl_alen == ETHER_ADDR_LEN)
printf("\tether %s\n",
ether_ntoa((struct ether_addr *)LLADDR(sdl)));
else
printf ("\tlladdr ");
while (--n >= 0)
printf("%02x%c",*cp++ & 0xff, n>0? ':' : ' ');
putchar('\n');
printf("\tlladdr %s\n", link_ntoa(sdl) + n + 1);
}
}
@ -1771,21 +1747,28 @@ at_getaddr(addr, which)
}
void
ether_getaddr(addr, which)
link_getaddr(addr, which)
const char *addr;
int which;
{
struct ether_addr *ea;
struct sockaddr *sea = &ridreq.ifr_addr;
char *temp;
struct sockaddr_dl sdl;
struct sockaddr *sa = &ridreq.ifr_addr;
ea = ether_aton(addr);
if (ea == NULL)
errx(1, "malformed ether address");
if (which == MASK)
errx(1, "Ethernet does not use netmasks");
sea->sa_family = AF_LINK;
sea->sa_len = ETHER_ADDR_LEN;
bcopy(ea, sea->sa_data, ETHER_ADDR_LEN);
if (which != ADDR)
errx(1, "can't set link-level netmask or broadcast");
if ((temp = malloc(strlen(addr) + 1)) == NULL)
errx(1, "malloc failed");
temp[0] = ':';
strcpy(temp + 1, addr);
sdl.sdl_len = sizeof(sdl);
link_addr(temp, &sdl);
free(temp);
if (sdl.sdl_alen > sizeof(sa->sa_data))
errx(1, "malformed link-level address");
sa->sa_family = AF_LINK;
sa->sa_len = sdl.sdl_alen;
bcopy(LLADDR(&sdl), sa->sa_data, sdl.sdl_alen);
}
/* XXX FIXME -- should use strtoul for better parsing. */