net: fec: implement rx_copybreak to improve rx performance

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- Copy short frames and keep the buffers mapped, re-allocate skb instead of
  memory copy for long frames.
- Add support for setting/getting rx_copybreak using generic ethtool tunable

Changes V3:
* As Eric Dumazet's suggestion that removing the copybreak module parameter
  and only keep the ethtool API support for rx_copybreak.

Changes V2:
* Implements rx_copybreak
* Rx_copybreak provides module parameter to change this value
* Add tunable_ops support for rx_copybreak

Signed-off-by: Fugang Duan <B38611@freescale.com>
Signed-off-by: Frank Li <Frank.Li@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

...

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Nimrod Andy 2014-09-30 09:28:05 +08:00 • committed by David S. Miller

parent ce1a4ea3f1

commit 1b7bde6d65

2 changed files with 145 additions and 65 deletions

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2

drivers/net/ethernet/freescale/fec.h

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210

drivers/net/ethernet/freescale/fec_main.c

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