diff options
| author | Alex Naslednikov <xalex@mellanox.co.il> | 2008-08-07 17:06:50 -0400 |
|---|---|---|
| committer | Roland Dreier <rolandd@cisco.com> | 2008-08-07 17:06:50 -0400 |
| commit | 6e0d733d921526e628107fb8b1aff5f7de870d6f (patch) | |
| tree | 357adc8727a6dea4277fbf5a38095c77855012c1 /drivers | |
| parent | f780a9f119caa48088b230836a7fa73d1096de7c (diff) | |
IB/mlx4: Allow 4K messages for UD QPs
Current code limits the max message size to 2K for UD QPs, while MTU
might be as big as 4K. This patch sets the maximum message size to
4K, which is needed for UD to work correctly on fabrics with a 4K MTU.
Signed-off-by: Alex Naslednikov <xalex@mellanox.co.il>
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 | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/infiniband/hw/mlx4/qp.c b/drivers/infiniband/hw/mlx4/qp.c index f7bc7dd8578a..f29dbb767e87 100644 --- a/drivers/infiniband/hw/mlx4/qp.c +++ b/drivers/infiniband/hw/mlx4/qp.c | |||
| @@ -902,7 +902,7 @@ static int __mlx4_ib_modify_qp(struct ib_qp *ibqp, | |||
| 902 | context->mtu_msgmax = (IB_MTU_4096 << 5) | | 902 | context->mtu_msgmax = (IB_MTU_4096 << 5) | |
| 903 | ilog2(dev->dev->caps.max_gso_sz); | 903 | ilog2(dev->dev->caps.max_gso_sz); |
| 904 | else | 904 | else |
| 905 | context->mtu_msgmax = (IB_MTU_4096 << 5) | 11; | 905 | context->mtu_msgmax = (IB_MTU_4096 << 5) | 12; |
| 906 | } else if (attr_mask & IB_QP_PATH_MTU) { | 906 | } else if (attr_mask & IB_QP_PATH_MTU) { |
| 907 | if (attr->path_mtu < IB_MTU_256 || attr->path_mtu > IB_MTU_4096) { | 907 | if (attr->path_mtu < IB_MTU_256 || attr->path_mtu > IB_MTU_4096) { |
| 908 | printk(KERN_ERR "path MTU (%u) is invalid\n", | 908 | printk(KERN_ERR "path MTU (%u) is invalid\n", |