!1522 Allow bpf_get_netns_cookie in BPF_PROG_TYPE_SK_MSG and BPF_PROG_TYPE_SOCK_OPS

Merge Pull Request from: @kwb0523 
 
We'd like to be able to identify netns from sock_ops and sk_msg hooks to
accelerate local process communication form different netns. 
 
Link:https://gitee.com/openeuler/kernel/pulls/1522

 

Reviewed-by: Jackie Liu <liuyun01@kylinos.cn>
Reviewed-by: Yue Haibing <yuehaibing@huawei.com>
Signed-off-by: Jialin Zhang <zhangjialin11@huawei.com>