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>
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@ -902,7 +902,7 @@ static int __mlx4_ib_modify_qp(struct ib_qp *ibqp,
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context->mtu_msgmax = (IB_MTU_4096 << 5) |
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ilog2(dev->dev->caps.max_gso_sz);
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else
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context->mtu_msgmax = (IB_MTU_4096 << 5) | 11;
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context->mtu_msgmax = (IB_MTU_4096 << 5) | 12;
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} else if (attr_mask & IB_QP_PATH_MTU) {
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if (attr->path_mtu < IB_MTU_256 || attr->path_mtu > IB_MTU_4096) {
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printk(KERN_ERR "path MTU (%u) is invalid\n",
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