Merge branch 'ibmvnic-Failover-hardening'

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Thomas Falcon says:

====================
ibmvnic: Failover hardening

Introduce additional transport event hardening to handle
events during device reset. In the driver's current state,
if a transport event is received during device reset, it can
cause the device to become unresponsive as invalid operations
are processed as the backing device context changes. After
a transport event, the device expects a request to begin the
initialization process. If the driver is still processing
a previously queued device reset in this state, it is likely
to fail as firmware will reject any commands other than the
one to initialize the client driver's Command-Response Queue.

Instead of failing and becoming dormant, the driver will make
one more attempt to recover and continue operation. This is
achieved by setting a state flag, which if true will direct
the driver to clean up all allocated resources and perform
a hard reset in an attempt to bring the driver back to an
operational state.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

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This commit is contained in:

David S. Miller 2018-05-24 22:19:26 -04:00

parent 180f848b8f 2770a7984d

commit 49a473f5b5

2 changed files with 202 additions and 23 deletions

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223

drivers/net/ethernet/ibm/ibmvnic.c

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2

drivers/net/ethernet/ibm/ibmvnic.h

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