mlx5: Fix missing device local_dma_lkey
The mlx5 driver exposes device capability IB_DEVICE_LOCAL_DMA_LKEY
but does not set the the device local_dma_lkey. This breaks
rpcrdma drivers.
Query and set this lkey when creating the device resources.
Signed-off-by: Sagi Grimberg <sagig@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
diff --git a/drivers/infiniband/hw/mlx5/main.c b/drivers/infiniband/hw/mlx5/main.c
index 085c24b..5ab5bb3 100644
--- a/drivers/infiniband/hw/mlx5/main.c
+++ b/drivers/infiniband/hw/mlx5/main.c
@@ -1256,10 +1256,18 @@
struct ib_srq_init_attr attr;
struct mlx5_ib_dev *dev;
struct ib_cq_init_attr cq_attr = {.cqe = 1};
+ u32 rsvd_lkey;
int ret = 0;
dev = container_of(devr, struct mlx5_ib_dev, devr);
+ ret = mlx5_core_query_special_context(dev->mdev, &rsvd_lkey);
+ if (ret) {
+ pr_err("Failed to query special context %d\n", ret);
+ return ret;
+ }
+ dev->ib_dev.local_dma_lkey = rsvd_lkey;
+
devr->p0 = mlx5_ib_alloc_pd(&dev->ib_dev, NULL, NULL);
if (IS_ERR(devr->p0)) {
ret = PTR_ERR(devr->p0);
@@ -1421,7 +1429,6 @@
strlcpy(dev->ib_dev.name, "mlx5_%d", IB_DEVICE_NAME_MAX);
dev->ib_dev.owner = THIS_MODULE;
dev->ib_dev.node_type = RDMA_NODE_IB_CA;
- dev->ib_dev.local_dma_lkey = 0 /* not supported for now */;
dev->num_ports = MLX5_CAP_GEN(mdev, num_ports);
dev->ib_dev.phys_port_cnt = dev->num_ports;
dev->ib_dev.num_comp_vectors =