net/macb: better manage tx errors

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Handle all TX errors, not only underruns. TX error management is
deferred to a dedicated workqueue.
Reinitialize the TX ring after treating all remaining frames, and
restart the controller when everything has been cleaned up properly.
Napi is not stopped during this task as the driver only handles
napi for RX for now.
With this sequence, we do not need a special check during the xmit
method as the packets will be caught by TX disable during workqueue
execution.

Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Tested-by: Joachim Eastwood <manabian@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Nicolas Ferre 2012-10-31 06:04:57 +00:00 • committed by David S. Miller

parent d1d1b53d9d

commit e86cd53afc

2 changed files with 113 additions and 54 deletions

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182

drivers/net/ethernet/cadence/macb.c

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1

drivers/net/ethernet/cadence/macb.h

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