diff options
| author | Steve Wise <swise@opengridcomputing.com> | 2010-05-20 16:57:43 -0500 |
|---|---|---|
| committer | Roland Dreier <rolandd@cisco.com> | 2010-05-24 21:08:01 -0700 |
| commit | 84172dee05cbce6ae791eac481ef4d8590cda791 (patch) | |
| tree | d631f0991e8be72d1d4d1cd2e1ce8d32eb5116e5 /drivers/infiniband/hw/cxgb4/cq.c | |
| parent | 895cf5f3d6cb72825919a39ae48a41476a821e65 (diff) | |
RDMA/cxgb4: Optimize CQ overflow detection
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>
Diffstat (limited to 'drivers/infiniband/hw/cxgb4/cq.c')
| -rw-r--r-- | drivers/infiniband/hw/cxgb4/cq.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/cxgb4/cq.c b/drivers/infiniband/hw/cxgb4/cq.c index 46ac00f728f..2447f529548 100644 --- a/drivers/infiniband/hw/cxgb4/cq.c +++ b/drivers/infiniband/hw/cxgb4/cq.c @@ -373,6 +373,7 @@ static void create_read_req_cqe(struct t4_wq *wq, struct t4_cqe *hw_cqe, V_CQE_SWCQE(SW_CQE(hw_cqe)) | V_CQE_OPCODE(FW_RI_READ_REQ) | V_CQE_TYPE(1)); + read_cqe->bits_type_ts = hw_cqe->bits_type_ts; } /* |