RDMA/cxgb4: Optimize CQ overflow detection

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1) save the timestamp flit in the cq when we consume a CQE.

2) always compare the saved flit with the previous entry flit when
   reading the next CQE entry.  If the flits don't compare, then we
   have overflowed.

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>

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Steve Wise 2010-05-20 16:57:43 -05:00 • committed by Roland Dreier

parent 895cf5f3d6

commit 84172dee05

2 changed files with 17 additions and 12 deletions

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1

drivers/infiniband/hw/cxgb4/cq.c

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28

drivers/infiniband/hw/cxgb4/t4.h

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