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authorSteve Wise <swise@opengridcomputing.com>2017-12-19 00:10:00 +0300
committerJason Gunthorpe <jgg@mellanox.com>2017-12-22 02:06:06 +0300
commitf55688c45442bc863f40ad678c638785b26cdce6 (patch)
tree29d6a91c3f075233a9468d83e22bb2caf6f69d77 /drivers/infiniband
parent9d98e19ba08f6aa33a4a1414f3dfe8440e67530c (diff)
downloadlinux-f55688c45442bc863f40ad678c638785b26cdce6.tar.xz
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>
Diffstat (limited to 'drivers/infiniband')
-rw-r--r--drivers/infiniband/hw/cxgb4/cq.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/infiniband/hw/cxgb4/cq.c b/drivers/infiniband/hw/cxgb4/cq.c
index b7bfc536e00f..7ed87622e461 100644
--- a/drivers/infiniband/hw/cxgb4/cq.c
+++ b/drivers/infiniband/hw/cxgb4/cq.c
@@ -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;
}