RDMA/nldev: Add support to dump device type and parent device if exists

If a device has a specific type or a parent device, dump them as well.

Example:
$ rdma dev show smi1
3: smi1: node_type ca fw 20.38.1002 node_guid 9803:9b03:009f:d5ef sys_image_guid 9803:9b03:009f:d5ee type smi parent ibp8s0f1

Signed-off-by: Mark Zhang <markzhang@nvidia.com>
Link: https://lore.kernel.org/r/4c022e3e34b5de1254a3b367d502a362cdd0c53a.1718553901.git.leon@kernel.org
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>

diff --git a/drivers/infiniband/core/nldev.c b/drivers/infiniband/core/nldev.c
index b5f87e7a1cfd58e1c602d217446d82089d4910a9..025efce540a7f63ac3b5d9f3634070937b2bbc79 100644 (file)
--- a/drivers/infiniband/core/nldev.c
+++ b/drivers/infiniband/core/nldev.c
@@ -168,6 +168,7 @@ static const struct nla_policy nldev_policy[RDMA_NLDEV_ATTR_MAX] = {
        [RDMA_NLDEV_SYS_ATTR_PRIVILEGED_QKEY_MODE] = { .type = NLA_U8 },
        [RDMA_NLDEV_ATTR_DRIVER_DETAILS]        = { .type = NLA_U8 },
        [RDMA_NLDEV_ATTR_DEV_TYPE]              = { .type = NLA_U8 },
+       [RDMA_NLDEV_ATTR_PARENT_NAME]           = { .type = NLA_NUL_STRING },
 };
 
 static int put_driver_name_print_type(struct sk_buff *msg, const char *name,
@@ -302,6 +303,15 @@ static int fill_dev_info(struct sk_buff *msg, struct ib_device *device)
        if (nla_put_u8(msg, RDMA_NLDEV_ATTR_DEV_DIM, device->use_cq_dim))
                return -EMSGSIZE;
 
+       if (device->type &&
+           nla_put_u8(msg, RDMA_NLDEV_ATTR_DEV_TYPE, device->type))
+               return -EMSGSIZE;
+
+       if (device->parent &&
+           nla_put_string(msg, RDMA_NLDEV_ATTR_PARENT_NAME,
+                          dev_name(&device->parent->dev)))
+               return -EMSGSIZE;
+
        /*
         * Link type is determined on first port and mlx4 device
         * which can potentially have two different link type for the same

diff --git a/include/uapi/rdma/rdma_netlink.h b/include/uapi/rdma/rdma_netlink.h
index bd52fb325e2291f3dfe7ae0615176f3a25668412..4b69242d784897ec4110b62b73afd9f954def167 100644 (file)
--- a/include/uapi/rdma/rdma_netlink.h
+++ b/include/uapi/rdma/rdma_netlink.h
@@ -570,6 +570,8 @@ enum rdma_nldev_attr {
 
        RDMA_NLDEV_ATTR_DEV_TYPE,               /* u8 */
 
+       RDMA_NLDEV_ATTR_PARENT_NAME,            /* string */
+
        /*
         * Always the end
         */