Am 2023-02-09 22:07, schrieb Jakub Kicinski:
On Thu, 9 Feb 2023 18:51:58 +0000 Ajay.Kathat@xxxxxxxxxxxxx wrote:
> netdev should be created with a valid lladdr, is there something
> wifi-specific here that'd prevalent that? The canonical flow is
> to this before registering the netdev:
Here it's the timing in wilc1000 by when the MAC address is available
to
read from NV. NV read is available in "mac_open" net_device_ops
instead
of bus probe function. I think, mostly the operations on netdev which
make use of mac address are performed after the "mac_open" (I may be
missing something).
Does it make sense to assign a random address in probe and later read
back from NV in mac_open to make use of stored value?
Hard to say, I'd suspect that may be even more confusing than
starting with zeroes. There aren't any hard rules around the
addresses AFAIK, but addrs are visible to user space. So user
space will likely make assumptions based on the most commonly
observed sequence (reading real addr at probe).
Maybe we should also ask the NetworkManager guys. IMHO random
MAC address sounds bogus.
I don't understand the "we load the firmware when the interface
is brought up" thing. Esp. with network manager scanning in the
background, the firmware gets loaded so many times.
-michael
