Commit d1f2cd89 authored by Eli Cohen's avatar Eli Cohen Committed by Roland Dreier

IB/mlx4: Configure QPs' max message size based on real device capability

ConnectX returns the max message size it supports through the
QUERY_DEV_CAP firmware command.  When modifying a QP to RTR, the max
message size for the QP must be specified.  This value must not exceed
the value declared through QUERY_DEV_CAP.  The current code ignores
the max allowed size and unconditionally sets the value to 2^31.  This
patch sets all QPs to the max value allowed as returned from firmware.
Signed-off-by: default avatarEli Cohen <eli@mellanox.co.il>
Signed-off-by: default avatarRoland Dreier <rolandd@cisco.com>
parent e7e55829
...@@ -908,7 +908,8 @@ static int __mlx4_ib_modify_qp(struct ib_qp *ibqp, ...@@ -908,7 +908,8 @@ static int __mlx4_ib_modify_qp(struct ib_qp *ibqp,
attr->path_mtu); attr->path_mtu);
goto out; goto out;
} }
context->mtu_msgmax = (attr->path_mtu << 5) | 31; context->mtu_msgmax = (attr->path_mtu << 5) |
ilog2(dev->dev->caps.max_msg_sz);
} }
if (qp->rq.wqe_cnt) if (qp->rq.wqe_cnt)
......
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