could get an interrupt after we free the ifp, and the interrupt
handler depended on the ifp being still alive, this could, in theory,
cause a crash. Eliminate this possibility by moving the if_free to
after the bus_teardown_intr() call.
IFF_DRV_RUNNING, as well as the move from ifnet.if_flags to
ifnet.if_drv_flags. Device drivers are now responsible for
synchronizing access to these flags, as they are in if_drv_flags. This
helps prevent races between the network stack and device driver in
maintaining the interface flags field.
Many __FreeBSD__ and __FreeBSD_version checks maintained and continued;
some less so.
Reviewed by: pjd, bz
MFC after: 7 days
over iteration of their multicast address lists when synchronizing the
hardware address filter with the network stack-maintained list.
Problem reported by: Ed Maste (emaste at phaedrus dot sandvine dot ca>
MFC after: 1 week
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
some of which are rather serious:
- Use the device sysctl tree instead of rolling our own.
- Don't create a bus_dmamap_t to pass to bus_dmamem_alloc(), it is
bus_dmamem_alloc() that creates it itself. The DMA map created
by the driver was overwritten and its memory was leaked.
- Fix resource handling bugs in the error path of ixgb_dma_alloc().
- Don't use vtophys() to get the base address of the TX and RX rings
when busdma already gave us the correct address to use!
- Remove now useless includes and the alpha_XXX_dmamap() hack.
- Don't initialize if_output to ether_output(), ether_ifattach() does
it for us already.
- Add proper module dependencies on ether and pci.
Unfortunately, I'm not lucky enough to own an ixgb(4) card, nor a
machine with a bus where to plug it in and I couldn't find anyone able
to test these patches, so they are only build-tested and I won't MFC
them for 5.4-RELEASE.
been developed for use with FreeBSD, version 4.8 and later.
Submitted by: Hema Joyce
Reviewed by: Prafulla Deuskar
Approved by: Prafulla Deuskar
MFC after: 1 week
