Re: [PATCH 6/7] sock, cgroup: add sock->sk_cgroup

From
Tejun Heo <hidden>
Date
2015-11-20 19:12:50
Also in
cgroups, lkml, netfilter-devel
Reply to
Daniel Wagner, 2015-11-20
Hello, Daniel.

On Fri, Nov 20, 2015 at 12:04:05PM +0100, Daniel Wagner wrote:
quoted
 static inline u16 sock_cgroup_prioidx(struct sock_cgroup_data *skcd)
 {
-	return skcd->prioidx;
+	return (skcd->is_data & 1) ? skcd->prioidx : 1;
 }
 
 static inline u32 sock_cgroup_classid(struct sock_cgroup_data *skcd)
 {
-	return skcd->classid;
+	return (skcd->is_data & 1) ? skcd->classid : 0;
 }

I still try to understand what the code does, hence this stupid question:

Why is sock_cgroup_prioidx() returning 1 if is not data and
sock_cgroup_classid() a 0?
I prolly should have added comments there.  prioidx carries the cgroup
ID on the hierarchy net_prio is attached to, so if nothing is
configured, the default value would be the ID of the root cgroup which
is always 1.  For net_cls, the unconfigured default value is zero.
Will refresh the patch with comments.

Thanks.

-- 
tejun
Thread (20 messages) 20 messages, 5 authors, last reply 2015-11-20
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