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Code Issues Releases Activity

If we got an invalid station address, generate random address. This

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might be caused by broken BIOS.

Reported by:	"Mikhail T." <mi+thun <> aldan.algebra.com>
MFC after:	1 week
This commit is contained in:
Pyun YongHyeon 2010-11-06 21:54:32 +00:00
parent 285ba17329
commit adfe075ce0
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=214898
1 changed files with 19 additions and 0 deletions
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19
sys/dev/sk/if_sk.c
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@ -1319,8 +1319,10 @@ sk_attach(dev)
struct sk_softc *sc;
struct sk_if_softc *sc_if;
struct ifnet *ifp;
u_int32_t r;
int error, i, phy, port;
u_char eaddr[6];
u_char inv_mac[] = {0, 0, 0, 0, 0, 0};
if (dev == NULL)
return(EINVAL);
@ -1400,6 +1402,23 @@ sk_attach(dev)
eaddr[i] =
sk_win_read_1(sc, SK_MAC0_0 + (port * 8) + i);
/* Verify whether the station address is invalid or not. */
if (bcmp(eaddr, inv_mac, sizeof(inv_mac)) == 0) {
device_printf(sc_if->sk_if_dev,
"Generating random ethernet address\n");
r = arc4random();
/*
* Set OUI to convenient locally assigned address. 'b'
* is 0x62, which has the locally assigned bit set, and
* the broadcast/multicast bit clear.
*/
eaddr[0] = 'b';
eaddr[1] = 's';
eaddr[2] = 'd';
eaddr[3] = (r >> 16) & 0xff;
eaddr[4] = (r >> 8) & 0xff;
eaddr[5] = (r >> 0) & 0xff;
}
/*
* Set up RAM buffer addresses. The NIC will have a certain
* amount of SRAM on it, somewhere between 512K and 2MB. We