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| author | Eli Cohen <eli@dev.mellanox.co.il> | 2008-07-14 23:48:45 -0700 |
|---|---|---|
| committer | Roland Dreier <rolandd@cisco.com> | 2008-07-14 23:48:45 -0700 |
| commit | d1f2cd895f8733faa9d79d09d825a2ed80002ac7 (patch) | |
| tree | 45d8f35de710b091af17611f3362f82834b5630f /drivers | |
| parent | e7e55829999deaab3f43e201a087731c02c54cf9 (diff) | |
| download | linux-3.10-d1f2cd895f8733faa9d79d09d825a2ed80002ac7.tar.gz linux-3.10-d1f2cd895f8733faa9d79d09d825a2ed80002ac7.tar.bz2 linux-3.10-d1f2cd895f8733faa9d79d09d825a2ed80002ac7.zip | |
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>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/infiniband/hw/mlx4/qp.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/infiniband/hw/mlx4/qp.c b/drivers/infiniband/hw/mlx4/qp.c index 4b0ac5d68c4..76054a72f71 100644 --- a/drivers/infiniband/hw/mlx4/qp.c +++ b/drivers/infiniband/hw/mlx4/qp.c @@ -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) |