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-rw-r--r--include/net/cls_cgroup.h27
1 files changed, 15 insertions, 12 deletions
diff --git a/include/net/cls_cgroup.h b/include/net/cls_cgroup.h
index a4dc5b027bd..b6a6eeb3905 100644
--- a/include/net/cls_cgroup.h
+++ b/include/net/cls_cgroup.h
@@ -17,14 +17,16 @@
#include <linux/hardirq.h>
#include <linux/rcupdate.h>
-#ifdef CONFIG_CGROUPS
+#if IS_ENABLED(CONFIG_NET_CLS_CGROUP)
struct cgroup_cls_state
{
struct cgroup_subsys_state css;
u32 classid;
};
-#ifdef CONFIG_NET_CLS_CGROUP
+extern void sock_update_classid(struct sock *sk);
+
+#if IS_BUILTIN(CONFIG_NET_CLS_CGROUP)
static inline u32 task_cls_classid(struct task_struct *p)
{
int classid;
@@ -39,32 +41,33 @@ static inline u32 task_cls_classid(struct task_struct *p)
return classid;
}
-#else
-extern int net_cls_subsys_id;
-
+#elif IS_MODULE(CONFIG_NET_CLS_CGROUP)
static inline u32 task_cls_classid(struct task_struct *p)
{
- int id;
+ struct cgroup_subsys_state *css;
u32 classid = 0;
if (in_interrupt())
return 0;
rcu_read_lock();
- id = rcu_dereference_index_check(net_cls_subsys_id,
- rcu_read_lock_held());
- if (id >= 0)
- classid = container_of(task_subsys_state(p, id),
+ css = task_subsys_state(p, net_cls_subsys_id);
+ if (css)
+ classid = container_of(css,
struct cgroup_cls_state, css)->classid;
rcu_read_unlock();
return classid;
}
#endif
-#else
+#else /* !CGROUP_NET_CLS_CGROUP */
+static inline void sock_update_classid(struct sock *sk)
+{
+}
+
static inline u32 task_cls_classid(struct task_struct *p)
{
return 0;
}
-#endif
+#endif /* CGROUP_NET_CLS_CGROUP */
#endif /* _NET_CLS_CGROUP_H */