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The igb driver currently requires a VF interface to have a non-zero MAC

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address, but the associated PF is giving the VF an all zeros MAC address
when one is not administratively assigned. The driver should check for
this case and generate a random address, similar to how the linux igbvf
driver does.

Submitted by:	skoumjian@juniper.net (Scott Koumjian)
MFH:		2 weeks
Differential Revision:	https://reviews.freebsd.org/D8399
This commit is contained in:
Sean Bruno 2016-11-07 22:24:37 +00:00
parent aabc5ce043
commit 525e07418c
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=308429
1 changed files with 14 additions and 5 deletions
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19
sys/dev/e1000/if_igb.c
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@ -590,11 +590,20 @@ igb_attach(device_t dev)
error = EIO;
goto err_late;
}
/* Check its sanity */
if (!igb_is_valid_ether_addr(adapter->hw.mac.addr)) {
device_printf(dev, "Invalid MAC address\n");
error = EIO;
goto err_late;
/* Check its sanity */
if (!igb_is_valid_ether_addr(adapter->hw.mac.addr)) {
if (adapter->vf_ifp) {
u8 addr[ETHER_ADDR_LEN];
arc4rand(&addr, sizeof(addr), 0);
addr[0] &= 0xFE;
addr[0] |= 0x02;
bcopy(addr, adapter->hw.mac.addr, sizeof(addr));
} else {
device_printf(dev, "Invalid MAC address\n");
error = EIO;
goto err_late;
}
}
/* Setup OS specific network interface */