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  1. 09 10月, 2012 1 次提交
  3. 07 10月, 2012 1 次提交
    • E
      net: remove skb recycling · acb600de
      由 Eric Dumazet 提交于 
      Over time, skb recycling infrastructure got litle interest and
many bugs. Generic rx path skb allocation is now using page
fragments for efficient GRO / TCP coalescing, and recyling
a tx skb for rx path is not worth the pain.

Last identified bug is that fat skbs can be recycled
and it can endup using high order pages after few iterations.

With help from Maxime Bizon, who pointed out that commit
87151b86 (net: allow pskb_expand_head() to get maximum tailroom)
introduced this regression for recycled skbs.

Instead of fixing this bug, lets remove skb recycling.

Drivers wanting really hot skbs should use build_skb() anyway,
to allocate/populate sk_buff right before netif_receive_skb()
Signed-off-by: NEric Dumazet <edumazet@google.com>
Cc: Maxime Bizon <mbizon@freebox.fr>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      acb600de
  5. 25 9月, 2012 1 次提交
    • C
      gianfar: Change default HW Tx queue scheduling mode · b98b8bab
      由 Claudiu Manoil 提交于 
      This is primarily to address transmission timeout occurrences, when
multiple H/W Tx queues are being used concurrently. Because in
the priority scheduling mode the controller does not service the
Tx queues equally (but in ascending index order), Tx timeouts are
being triggered rightaway for a basic test with multiple simultaneous
connections like:
iperf -c <server_ip> -n 100M -P 8

resulting in kernel trace:
NETDEV WATCHDOG: eth1 (fsl-gianfar): transmit queue <X> timed out
------------[ cut here ]------------
WARNING: at net/sched/sch_generic.c:255
...
and controller reset during intense traffic, and possibly further
complications.

This patch changes the default H/W Tx scheduling setting (TXSCHED)
for multi-queue devices, from priority scheduling mode to a weighted
round robin mode with equal weights for all H/W Tx queues, and
addresses the issue above.
Signed-off-by: NClaudiu Manoil <claudiu.manoil@freescale.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      b98b8bab
  7. 23 9月, 2012 1 次提交
  9. 22 9月, 2012 1 次提交
  11. 31 8月, 2012 8 次提交
  13. 25 8月, 2012 1 次提交
  15. 15 8月, 2012 1 次提交
  17. 11 7月, 2012 1 次提交
  19. 10 7月, 2012 2 次提交
  21. 29 6月, 2012 1 次提交
  23. 28 6月, 2012 4 次提交
  25. 07 6月, 2012 1 次提交
    • J
      ethernet: Remove casts to same type · 64699336
      由 Joe Perches 提交于 
      Adding casts of objects to the same type is unnecessary
and confusing for a human reader.

For example, this cast:

        int y;
        int *p = (int *)&y;

I used the coccinelle script below to find and remove these
unnecessary casts.  I manually removed the conversions this
script produces of casts with __force, __iomem and __user.

@@
type T;
T *p;
@@

-       (T *)p
+       p

A function in atl1e_main.c was passed a const pointer
when it actually modified elements of the structure.

Change the argument to a non-const pointer.

A function in stmmac needed a __force to avoid a sparse
warning.  Added it.
Signed-off-by: NJoe Perches <joe@perches.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      64699336
  27. 06 6月, 2012 5 次提交
  29. 03 6月, 2012 1 次提交
  31. 23 5月, 2012 1 次提交
  33. 12 5月, 2012 1 次提交
  35. 03 5月, 2012 2 次提交
  37. 25 4月, 2012 1 次提交
    • S
      net fec: do not depend on grouped clocks · f4d40de3
      由 Sascha Hauer 提交于 
      the current i.MX clock support groups together unrelated clocks
to a single clock which is then used by the driver. This can't
be accomplished with the generic clock framework so we instead
request the individual clocks in the driver. For i.MX there are
generally three different clocks:

ipg: bus clock (needed to access registers)
ahb: dma relevant clock, sometimes referred to as hclk in the datasheet
per: bit clock, pixel clock

This patch changes the driver to request the individual clocks.
Currently all clk_get will get the same clock until the SoCs
are converted to the generic clock framework
Signed-off-by: NSascha Hauer <s.hauer@pengutronix.de>
      f4d40de3
  39. 22 4月, 2012 1 次提交
  41. 06 4月, 2012 1 次提交
  43. 04 4月, 2012 3 次提交