RDMA_NLDEV_ATTR_CHARDEV_TYPE
if (err || !tb[RDMA_NLDEV_ATTR_CHARDEV_TYPE])
nla_strscpy(client_name, tb[RDMA_NLDEV_ATTR_CHARDEV_TYPE],
[RDMA_NLDEV_ATTR_CHARDEV_TYPE] = { .type = NLA_NUL_STRING,