diff options
Diffstat (limited to 'include/net/cls_cgroup.h')
| -rw-r--r-- | include/net/cls_cgroup.h | 27 |
1 files changed, 15 insertions, 12 deletions
diff --git a/include/net/cls_cgroup.h b/include/net/cls_cgroup.h index a4dc5b027bd9..b6a6eeb3905f 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 */ |