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  1. 06 6月, 2014 5 次提交
    • A
      dm9000: clean up edge-triggered irq compatibility · 17ad78de
      由 Andrew Ruder 提交于 
      DM9000 uses level-triggered interrupts.  Some systems (PXA270) only
support edge-triggered interrupts on GPIOs.  Some changes are necessary
to ensure that interrupts are not triggered while the GPIO interrupt is
masked or we will miss the interrupt forever.

* Make some helper functions called dm9000_mask_interrupts() and
  dm9000_unmask_interrupts() for readability.

* dm9000_init_dm9000(): ensure that this function always leaves interrupts
  masked regardless of the state when it entered the function.  This is
  primarily to support the situation in dm9000_open where the logic used
  to go:

    dm9000_open()
        dm9000_init_dm9000()
            unmask interrupts
        request_irq()

  If an interrupt occurred between unmasking the interrupt and
  requesting the irq, it would be missed forever as the edge event would
  never be seen by the GPIO hardware in the PXA270.  This allows us to
  change the logic to:

    dm9000_open()
        dm9000_init_dm9000()
            dm9000_mask_interrupts()
        request_irq()
        dm9000_unmask_interrupts()

* dm9000_timeout(), dm9000_drv_resume(): Add the missing
  dm9000_unmask_interrupts() now required by the change above.

* dm9000_shutdown(): Use mask helper function

* dm9000_interrupt(): Use mask/unmask helper functions
Signed-off-by: NAndrew Ruder <andrew.ruder@elecsyscorp.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      17ad78de
    • A
      dm9000: clean up reset code · 751bb6fd
      由 Andrew Ruder 提交于 
      * Change a hard-coded 0x3 to NCR_RST | NCR_MAC_LBK in dm9000_reset

* Every single place where dm9000_init_dm9000 was ran, a dm9000_reset
  was called immediately before-hand.  Bring dm9000_reset into
  dm9000_init_dm9000.

* The following commit updated the dm9000_probe reset routine to use NCR_RST
  | NCR_MAC_LBK:

    6741f40d DM9000B: driver initialization upgrade

  and a later commit added a bug-fix to always reset the chip twice:

    09ee9f87 dm9000: Implement full reset of DM9000 network device

  Unfortunately, since the changes in 6741f40d were made by replacing the
  dm9000_probe dm9000_reset with the adjusted iow(), the changes in
  09ee9f87 were not incorporated into the dm9000_probe reset.
  Furthermore, it bypassed the requisite reset-delay causing some boards
  to get at least one "read wrong id ..." dev_err message during
  dm9000_probe.
Signed-off-by: NAndrew Ruder <andrew.ruder@elecsyscorp.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      751bb6fd
    • A
      dm9000: acquire irq flags from device tree · 6b50d038
      由 Andrew Ruder 提交于 
      The DM9000 supports both active high interrupts and active low interrupts.
This is configured via the attached EEPROM.  In the device-tree case, make sure
that the DM9000 driver passes the correct flags to request_irq.
Signed-off-by: NAndrew Ruder <andrew.ruder@elecsyscorp.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      6b50d038
    • S
      MPLS: Use mpls_features to activate software MPLS GSO segmentation · 3b392ddb
      由 Simon Horman 提交于 
      If an MPLS packet requires segmentation then use mpls_features
to determine if the software implementation should be used.

As no driver advertises MPLS GSO segmentation this will always be
the case.

I had not noticed that this was necessary before as software MPLS GSO
segmentation was already being used in my test environment. I believe that
the reason for that is the skbs in question always had fragments and the
driver I used does not advertise NETIF_F_FRAGLIST (which seems to be the
case for most drivers). Thus software segmentation was activated by
skb_gso_ok().

This introduces the overhead of an extra call to skb_network_protocol()
in the case where where CONFIG_NET_MPLS_GSO is set and
skb->ip_summed == CHECKSUM_NONE.

Thanks to Jesse Gross for prompting me to investigate this.
Signed-off-by: NSimon Horman <horms@verge.net.au>
Acked-by: NYAMAMOTO Takashi <yamamoto@valinux.co.jp>
Acked-by: NThomas Graf <tgraf@suug.ch>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      3b392ddb
    • D
      Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/net-next · d68de60f
      由 David S. Miller 提交于 
      Jeff Kirsher says:

====================
Intel Wired LAN Driver Updates 2014-06-05

This series contains updates to i40e and i40evf.

Jesse fixes an issue reported by Dave Jones where a couple of FD checks
ended up using bitwise OR where it should have been bitwise AND.

Neerav removes unused defines and macros for receive LRO.  Fix the driver
from allowing the user to set a larger MTU size that the hardware was
being configured to support.  Refactors send version which moves code in
two places into a small helper function.

Kamil modifies register diagnostics since register ranges can vary among
the different NVMs to avoid false test results.  So now we try to identify
the full range and use it for a register test and if we fail to define the
proper register range, we will only test the first register from that
group.  Then removes the check for large buffer since this was added in the
case this structure changed in the future, since the AQ definition is now
mature enough that this check is no longer necessary.

Mitch fixes i40evf driver to allocate descriptors in groups of 32 since the
hardware requires it.  Also fixes a crash when the ring size changed because
it would change the count before deallocating resources, causing the driver
to either free nonexistent buffers or leak leftover buffers.  Fixed the
driver to notify the VF for all types of resets so the VF can attempt a
graceful reinit.

Shannon refactors stats collection to create a unifying stats update routine
to call the various stat collection routines.  Removes rx_errors and
rx_missed stats since they were removed from the chip design.  Added
missing VSI statistics that the hardware offers but are not apart of the
standard netdev stats.

v2: dropped patch "i40e: Allow disabling of DCB via debugfs" from Neerav
    based on feedback from David Miller.
====================
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      d68de60f
  3. 05 6月, 2014 35 次提交