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iw_cxgb4: Only validate the MSN for successful completions 

If the RECV CQE is in error, ignore the MSN check.  This was causing
recvs that were flushed into the sw cq to be completed with the wrong
status (BAD_MSN instead of FLUSHED).

Cc: stable@vger.kernel.org
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
hifive-unleashed-5.1
Steve Wise 2017-12-18 13:10:00 -08:00 committed by Jason Gunthorpe
parent 9d98e19ba0
commit f55688c454
1 changed files with 3 additions and 3 deletions
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6
drivers/infiniband/hw/cxgb4/cq.c
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@ -571,10 +571,10 @@ static int poll_cq(struct t4_wq *wq, struct t4_cq *cq, struct t4_cqe *cqe,
ret = -EAGAIN;
goto skip_cqe;
}
if (unlikely((CQE_WRID_MSN(hw_cqe) != (wq->rq.msn)))) {
if (unlikely(!CQE_STATUS(hw_cqe) &&
CQE_WRID_MSN(hw_cqe) != wq->rq.msn)) {
t4_set_wq_in_error(wq);
hw_cqe->header |= htonl(CQE_STATUS_V(T4_ERR_MSN));
goto proc_cqe;
hw_cqe->header |= cpu_to_be32(CQE_STATUS_V(T4_ERR_MSN));
}
goto proc_cqe;
}