From: Mark Zhang <markzhang@nvidia.com>
Date: Thu, 20 Apr 2023 01:39:06 +0000 (+0300)
Subject: RDMA/mlx5: Use correct device num_ports when modify DC
X-Git-Tag: v6.4-rc1~75^2~1
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=746aa3c8cb1a650ff2583497ac646e505831b9b9;p=thirdparty%2Fkernel%2Flinux.git

RDMA/mlx5: Use correct device num_ports when modify DC

Just like other QP types, when modify DC, the port_num should be compared
with dev->num_ports, instead of HCA_CAP.num_ports.  Otherwise Multi-port
vHCA on DC may not work.

Fixes: 776a3906b692 ("IB/mlx5: Add support for DC target QP")
Link: https://lore.kernel.org/r/20230420013906.1244185-1-markzhang@nvidia.com
Signed-off-by: Mark Zhang <markzhang@nvidia.com>
Reviewed-by: Maor Gottlieb <maorg@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
---

diff --git a/drivers/infiniband/hw/mlx5/qp.c b/drivers/infiniband/hw/mlx5/qp.c
index 1093d3a0ed432..70ca8ffa9256b 100644
--- a/drivers/infiniband/hw/mlx5/qp.c
+++ b/drivers/infiniband/hw/mlx5/qp.c
@@ -4493,7 +4493,7 @@ static int mlx5_ib_modify_dct(struct ib_qp *ibqp, struct ib_qp_attr *attr,
 			return -EINVAL;
 
 		if (attr->port_num == 0 ||
-		    attr->port_num > MLX5_CAP_GEN(dev->mdev, num_ports)) {
+		    attr->port_num > dev->num_ports) {
 			mlx5_ib_dbg(dev, "invalid port number %d. number of ports is %d\n",
 				    attr->port_num, dev->num_ports);
 			return -EINVAL;