ibmvnic: Introduce hard reset recovery

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Introduce a recovery hard reset to handle reset failure as a result of
change of device context following a transport event, such as a
backing device failover or partition migration. These operations reset
the device context to its initial state. If this occurs during a reset,
any initialization commands are likely to fail with an invalid state
error as backing device firmware requests reinitialization.

When this happens, make one more attempt by performing a hard reset,
which frees any resources currently allocated and performs device
initialization. If a transport event occurs during a device reset, a
flag is set which will trigger a new hard reset following the
completionof the current reset event.

Signed-off-by: Thomas Falcon <tlfalcon@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Thomas Falcon 2018-05-23 13:38:02 -05:00 • committed by David S. Miller

parent 06e43d7f9f

commit 2770a7984d

2 changed files with 98 additions and 4 deletions

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101

drivers/net/ethernet/ibm/ibmvnic.c

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1

drivers/net/ethernet/ibm/ibmvnic.h

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