!845 [OLK-5.10] net/smc: Introduce generic netlink interface for diagnostic purposes

Merge Pull Request from: @zengyingyu11 
 
Content：
merge mainline net/smc generic netlink interface patches for connection diagnosis

Related issue:
https://gitee.com/openeuler/kernel/issues/I78IFM 
 
Link:https://gitee.com/openeuler/kernel/pulls/845

 

Reviewed-by: Jiao Litao <jiaolitao@sangfor.com.cn>
Signed-off-by: Jialin Zhang <zhangjialin11@huawei.com>