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  1. 09 9月, 2010 3 次提交
    • A
      ixgbe: fix TX ring enable issues seen when VMDQ is enabled · 933d41f1
      由 Alexander Duyck 提交于 
      The ordering of operations was messed up in the init and as a result when
VMDQ was enabled we were trying to enable TX rings before setting the VFTE
bits. This resulted in a ring that appeared to fail to enable when in fact
it was blocked because the VFTE bits were cleared after the reset.
Signed-off-by: NAlexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      933d41f1
    • J
      e1000: fix Tx hangs by disabling 64-bit DMA · e508be17
      由 Jesse Brandeburg 提交于 
      Several users report issues with 32-bit adapters when plugged
into PCI slots in machines with >= 4GB ram.  In particular AMD
systems with HyperTransport to PCI bridges seem to trigger the
issue, but it isn't limited to only them.

This issue is not easily reproducible here, yet still continues
to occur in the field.  For e1000 on PCI devices, just disable DMA
addresses over the 4GB boundary when in PCI (not PCI-X) mode, to
prevent the issue from continuing to pop up.  The performance
impact for this is negligible.

The code was refactored to move the init of the hw struct to its
own function. This allows the init to be called very early in
probe, which then allows using hw-> members for this fix.

A slight refactor to the DMA mask code was done for minor
correctness based on the instructions in DMA-API-HOWTO.
Signed-off-by: NJesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      e508be17
    • O
      introduce cx82310_eth: Conexant CX82310-based ADSL router USB ethernet driver · cc28a20e
      由 Ondrej Zary 提交于 
      This patch introduces cx82310_eth driver - driver for USB ethernet port of
ADSL routers based on Conexant CX82310 chips. Such routers usually have
ethernet port(s) too which are bridged together with the USB ethernet port,
allowing the USB-connected machine to communicate to the network (and also
internet through the ADSL, of course).

This is my first driver, so please check thoroughly. As there's no protocol
documentation, it was done with usbsnoop dumps from Windows driver, some
parts (the commands) inspired by cxacru driver and also other usbnet drivers.
The driver passed my testing - some real work and also pings sized from 0 to
65507 B.

The only problem I found is the ifconfig error counter. When I return 0 (or 1
but empty skb) from rx_fixup(), usbnet increases the error counter although
it's not an error condition (because packets can cross URB boundaries). Maybe
the usbnet should be fixed to allow rx_fixup() to return empty skbs (or some
other value, e.g. 2)?

The USB ID of my device is 0x0572:0xcb01 which conflicts with some ADSL modems
using cxacru driver (they probably use the same chipset but simpler
firmware). The modems seem to use bDeviceClass 0 and iProduct "ADSL USB
MODEM", my router uses bDeviceClass 255 and iProduct "USB NET CARD". The
driver matches only devices with class 255 and checks for the iProduct string
during init. I already posted a patch for the cxacru driver to ignore these
devices.
Signed-off-by: NOndrej Zary <linux@rainbow-software.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      cc28a20e
  3. 08 9月, 2010 11 次提交
  5. 07 9月, 2010 26 次提交