net: wrap sock->sk_cgrp_prioidx and ->sk_classid inside a struct
Introduce sock->sk_cgrp_data which is a struct sock_cgroup_data.
->sk_cgroup_prioidx and ->sk_classid are moved into it. The struct
and its accessors are defined in cgroup-defs.h. This is to prepare
for overloading the fields with a cgroup pointer.
This patch mostly performs equivalent conversions but the followings
are noteworthy.
* Equality test before updating classid is removed from
sock_update_classid(). This shouldn't make any noticeable
difference and a similar test will be implemented on the helper side
later.
* sock_update_netprioidx() now takes struct sock_cgroup_data and can
be moved to netprio_cgroup.h without causing include dependency
loop. Moved.
* The dummy version of sock_update_netprioidx() converted to a static
inline function while at it.
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/linux/cgroup-defs.h b/include/linux/cgroup-defs.h
index 504d859..ed128fed 100644
--- a/include/linux/cgroup-defs.h
+++ b/include/linux/cgroup-defs.h
@@ -542,4 +542,40 @@
#endif /* CONFIG_CGROUPS */
+#ifdef CONFIG_SOCK_CGROUP_DATA
+
+struct sock_cgroup_data {
+ u16 prioidx;
+ u32 classid;
+};
+
+static inline u16 sock_cgroup_prioidx(struct sock_cgroup_data *skcd)
+{
+ return skcd->prioidx;
+}
+
+static inline u32 sock_cgroup_classid(struct sock_cgroup_data *skcd)
+{
+ return skcd->classid;
+}
+
+static inline void sock_cgroup_set_prioidx(struct sock_cgroup_data *skcd,
+ u16 prioidx)
+{
+ skcd->prioidx = prioidx;
+}
+
+static inline void sock_cgroup_set_classid(struct sock_cgroup_data *skcd,
+ u32 classid)
+{
+ skcd->classid = classid;
+}
+
+#else /* CONFIG_SOCK_CGROUP_DATA */
+
+struct sock_cgroup_data {
+};
+
+#endif /* CONFIG_SOCK_CGROUP_DATA */
+
#endif /* _LINUX_CGROUP_DEFS_H */