From c4342d8a4d95e18b957b898dbf5bfce28fca2780 Mon Sep 17 00:00:00 2001 From: Jack Morgenstein Date: Thu, 15 Dec 2005 19:59:01 -0800 Subject: [PATCH] IB/mthca: Fix corner cases in max_rd_atomic value handling in modify QP sae and sre bits should only be set when setting sra_max. Further, in the old code, if the caller specifies max_rd_atomic = 0, the sre and sae bits are still set, with the result that the QP ends up with max_rd_atomic = 1 in effect. Signed-off-by: Jack Morgenstein Signed-off-by: Michael S. Tsirkin Signed-off-by: Roland Dreier --- drivers/infiniband/hw/mthca/mthca_qp.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) diff --git a/drivers/infiniband/hw/mthca/mthca_qp.c b/drivers/infiniband/hw/mthca/mthca_qp.c index e826c9ff5d70..d786ef443614 100644 --- a/drivers/infiniband/hw/mthca/mthca_qp.c +++ b/drivers/infiniband/hw/mthca/mthca_qp.c @@ -747,9 +747,7 @@ int mthca_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, int attr_mask) qp_context->wqe_lkey = cpu_to_be32(qp->mr.ibmr.lkey); qp_context->params1 = cpu_to_be32((MTHCA_ACK_REQ_FREQ << 28) | (MTHCA_FLIGHT_LIMIT << 24) | - MTHCA_QP_BIT_SRE | - MTHCA_QP_BIT_SWE | - MTHCA_QP_BIT_SAE); + MTHCA_QP_BIT_SWE); if (qp->sq_policy == IB_SIGNAL_ALL_WR) qp_context->params1 |= cpu_to_be32(MTHCA_QP_BIT_SSC); if (attr_mask & IB_QP_RETRY_CNT) { @@ -758,9 +756,13 @@ int mthca_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, int attr_mask) } if (attr_mask & IB_QP_MAX_QP_RD_ATOMIC) { - if (attr->max_rd_atomic) + if (attr->max_rd_atomic) { + qp_context->params1 |= + cpu_to_be32(MTHCA_QP_BIT_SRE | + MTHCA_QP_BIT_SAE); qp_context->params1 |= cpu_to_be32(fls(attr->max_rd_atomic - 1) << 21); + } qp_param->opt_param_mask |= cpu_to_be32(MTHCA_QP_OPTPAR_SRA_MAX); } -- 2.25.1