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authorAndre Detsch <adetsch@br.ibm.com>2010-08-17 05:49:12 +0000
committerDavid S. Miller <davem@davemloft.net>2010-08-18 23:50:51 -0700
commit2928db4c3c62552d3caf9ab53ccc6f7ae9865a23 (patch)
tree17e22bd8583f780a93001220df2b9f178b4f87f9 /net
parent96ac4f6b326450af496e82347e207b0fca7a9090 (diff)
ehea: Fix synchronization between HW and SW send queue
ehea: Fix synchronization between HW and SW send queue When memory is added to / removed from a partition via the Memory DLPAR mechanism, the eHEA driver has to do a couple of things to reflect the memory change in its own IO address translation tables. This involves stopping and restarting the HW queues. During this operation, it is possible that HW and SW pointer into these queues get out of sync. This results in a situation where packets that are attached to a send queue are not transmitted immediately, but delayed until further X packets have been put on the queue. This patch detects such loss of synchronization, and resets the ehea port when needed. Signed-off-by: Jan-Bernd Themann <themann@de.ibm.com> Signed-off-by: Andre Detsch <adetsch@br.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
0 files changed, 0 insertions, 0 deletions

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