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iw_cxgb4: set correct FetchBurstMax for QPs

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commit b414fa01c31318383ae29d9d23cb9ca4184bbd86 upstream.

The current QP FetchBurstMax value is 256B, which
is incorrect since a WR can exceed that value.  The
result being a partial WR fetched by hardware, and
a fatal "bad WR" error posted by the SGE.

So bump the FetchBurstMax to 512B.

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Steve Wise 2016-12-15 08:09:35 -08:00 committed by Greg Kroah-Hartman
parent 13363b6988
commit bf9ab22c35
1 changed files with 3 additions and 2 deletions
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5
drivers/infiniband/hw/cxgb4/qp.c
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@ -321,7 +321,8 @@ static int create_qp(struct c4iw_rdev *rdev, struct t4_wq *wq,
FW_RI_RES_WR_DCAEN_V(0) |
FW_RI_RES_WR_DCACPU_V(0) |
FW_RI_RES_WR_FBMIN_V(2) |
FW_RI_RES_WR_FBMAX_V(2) |
(t4_sq_onchip(&wq->sq) ? FW_RI_RES_WR_FBMAX_V(2) :
FW_RI_RES_WR_FBMAX_V(3)) |
FW_RI_RES_WR_CIDXFTHRESHO_V(0) |
FW_RI_RES_WR_CIDXFTHRESH_V(0) |
FW_RI_RES_WR_EQSIZE_V(eqsize));
@ -345,7 +346,7 @@ static int create_qp(struct c4iw_rdev *rdev, struct t4_wq *wq,
FW_RI_RES_WR_DCAEN_V(0) |
FW_RI_RES_WR_DCACPU_V(0) |
FW_RI_RES_WR_FBMIN_V(2) |
FW_RI_RES_WR_FBMAX_V(2) |
FW_RI_RES_WR_FBMAX_V(3) |
FW_RI_RES_WR_CIDXFTHRESHO_V(0) |
FW_RI_RES_WR_CIDXFTHRESH_V(0) |
FW_RI_RES_WR_EQSIZE_V(eqsize));