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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: Eli Cohen <eli@mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
This commit is contained in:
Eli Cohen 2008-07-14 23:48:45 -07:00 committed by Roland Dreier
parent e7e5582999
commit d1f2cd895f
1 changed files with 2 additions and 1 deletions
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3
drivers/infiniband/hw/mlx4/qp.c
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@ -908,7 +908,8 @@ static int __mlx4_ib_modify_qp(struct ib_qp *ibqp,
attr->path_mtu);
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)