The whole db drop avoidance stuff is for T4 only. So we cannot allow
that to be enabled for T5 devices.
Signed-off-by: Steve Wise <sw...@opengridcomputing.com>
---
drivers/infiniband/hw/cxgb4/qp.c | 4 ++++
1 files changed, 4 insertions(+), 0 deletions(-)
diff --git a/drivers/infiniband/hw/cxgb4/qp.c b/drivers/infiniband/hw/cxgb4/qp.c
index f18ef34..086f62f 100644
--- a/drivers/infiniband/hw/cxgb4/qp.c
+++ b/drivers/infiniband/hw/cxgb4/qp.c
@@ -1777,11 +1777,15 @@ int c4iw_ib_modify_qp(struct ib_qp *ibqp, struct
ib_qp_attr *attr,
/*
* Use SQ_PSN and RQ_PSN to pass in IDX_INC values for
* ringing the queue db when we're in DB_FULL mode.
+ * Only allow this on T4 devices.
*/
attrs.sq_db_inc = attr->sq_psn;
attrs.rq_db_inc = attr->rq_psn;
mask |= (attr_mask & IB_QP_SQ_PSN) ? C4IW_QP_ATTR_SQ_DB : 0;
mask |= (attr_mask & IB_QP_RQ_PSN) ? C4IW_QP_ATTR_RQ_DB : 0;
+ if (is_t5(to_c4iw_qp(ibqp)->rhp->rdev.lldi.adapter_type) &&
+ (mask & (C4IW_QP_ATTR_SQ_DB|C4IW_QP_ATTR_RQ_DB)))
+ return -EINVAL;
return c4iw_modify_qp(rhp, qhp, mask, &attrs, 0);
}
--
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