!878 Bugfixes for RDMA/hns

Merge Pull Request from: @stinft 
 
1.#I7A2PB
2.#I7A2PK
3.#I7A2SA
4.#I7A2V2
5.#I7A2VV 
 
Link:https://gitee.com/openeuler/kernel/pulls/878

 

Reviewed-by: Chengchang Tang <tangchengchang@huawei.com>
Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com>