1f8451725SHerbert Xu /* 2f8451725SHerbert Xu * cls_cgroup.h Control Group Classifier 3f8451725SHerbert Xu * 4f8451725SHerbert Xu * Authors: Thomas Graf <tgraf@suug.ch> 5f8451725SHerbert Xu * 6f8451725SHerbert Xu * This program is free software; you can redistribute it and/or modify it 7f8451725SHerbert Xu * under the terms of the GNU General Public License as published by the Free 8f8451725SHerbert Xu * Software Foundation; either version 2 of the License, or (at your option) 9f8451725SHerbert Xu * any later version. 10f8451725SHerbert Xu * 11f8451725SHerbert Xu */ 12f8451725SHerbert Xu 13f8451725SHerbert Xu #ifndef _NET_CLS_CGROUP_H 14f8451725SHerbert Xu #define _NET_CLS_CGROUP_H 15f8451725SHerbert Xu 16f8451725SHerbert Xu #include <linux/cgroup.h> 17f8451725SHerbert Xu #include <linux/hardirq.h> 18f8451725SHerbert Xu #include <linux/rcupdate.h> 19fe1217c4SDaniel Borkmann #include <net/sock.h> 20f8451725SHerbert Xu 21fe1217c4SDaniel Borkmann #ifdef CONFIG_CGROUP_NET_CLASSID 22fe1217c4SDaniel Borkmann struct cgroup_cls_state { 23f8451725SHerbert Xu struct cgroup_subsys_state css; 24f8451725SHerbert Xu u32 classid; 25f8451725SHerbert Xu }; 26f8451725SHerbert Xu 27fe1217c4SDaniel Borkmann struct cgroup_cls_state *task_cls_state(struct task_struct *p); 28f3419807SDaniel Wagner 29f8451725SHerbert Xu static inline u32 task_cls_classid(struct task_struct *p) 30f8451725SHerbert Xu { 31920750ceSDaniel Wagner u32 classid; 323fb5a991SLi Zefan 33f8451725SHerbert Xu if (in_interrupt()) 34f8451725SHerbert Xu return 0; 35f8451725SHerbert Xu 363fb5a991SLi Zefan rcu_read_lock(); 37*073219e9STejun Heo classid = container_of(task_css(p, net_cls_cgrp_id), 38937eada4SHerbert Xu struct cgroup_cls_state, css)->classid; 393fb5a991SLi Zefan rcu_read_unlock(); 403fb5a991SLi Zefan 413fb5a991SLi Zefan return classid; 42f8451725SHerbert Xu } 43fe1217c4SDaniel Borkmann 44fe1217c4SDaniel Borkmann static inline void sock_update_classid(struct sock *sk) 45f8451725SHerbert Xu { 46fe1217c4SDaniel Borkmann u32 classid; 47f8451725SHerbert Xu 48fe1217c4SDaniel Borkmann classid = task_cls_classid(current); 49fe1217c4SDaniel Borkmann if (classid != sk->sk_classid) 50fe1217c4SDaniel Borkmann sk->sk_classid = classid; 51f8451725SHerbert Xu } 52fe1217c4SDaniel Borkmann #else /* !CONFIG_CGROUP_NET_CLASSID */ 53211d2f97SZefan Li static inline void sock_update_classid(struct sock *sk) 54f3419807SDaniel Wagner { 55f3419807SDaniel Wagner } 56fe1217c4SDaniel Borkmann #endif /* CONFIG_CGROUP_NET_CLASSID */ 57f8451725SHerbert Xu #endif /* _NET_CLS_CGROUP_H */ 58