struct ifnet or the layer 2 common structure it was embedded in have
been replaced with a struct ifnet pointer to be filled by a call to the
new function, if_alloc(). The layer 2 common structure is also allocated
via if_alloc() based on the interface type. It is hung off the new
struct ifnet member, if_l2com.
This change removes the size of these structures from the kernel ABI and
will allow us to better manage them as interfaces come and go.
Other changes of note:
- Struct arpcom is no longer referenced in normal interface code.
Instead the Ethernet address is accessed via the IFP2ENADDR() macro.
To enforce this ac_enaddr has been renamed to _ac_enaddr.
- The second argument to ether_ifattach is now always the mac address
from driver private storage rather than sometimes being ac_enaddr.
Reviewed by: sobomax, sam
o Instead of locking and unlocking all over the place, use
lock assertions to make certain that the bfe lock is held
where necessary.
o Create locked and unlocked versions of bfe_init and bfe_start. These
functions can be called from outside the module and by functions
within the bfe module. The calls from outside the module don't
hold the bfe lock so the unlocked versions called by these functions
simple obtain the bfe lock and call the locked version.
- Fix a typo (scp) in the locking macros that only worked because in all the
instances in which it was called the softc pointer happened to be named 'sc'.
- Mark the interrupt MPSAFE
Tested by: matusita, Dario Freni <saturnero@gufi.org>
Silence from: -net, wpaul
written by Stuart Walsh and Duncan Barclay (with some kibbitzing by
me). I'm checking it in on Stuart's behalf.
The BCM4401 is built into several x86 laptop and desktop systems. For the
moment, I have only enabled it in the x86 kernel config because although
it's a PCI device, I haven't heard of any standalone NICs that use it. If
somebody knows of one, we can easily add it to the other arches.
This driver uses register/structure data gleaned from the Linux
driver released by Broadcom, but does not contain any of the code
from the Linux driver itself. It uses busdma.
