1 /* 2 * netprio_cgroup.h Control Group Priority set 3 * 4 * 5 * Authors: Neil Horman <nhorman@tuxdriver.com> 6 * 7 * This program is free software; you can redistribute it and/or modify it 8 * under the terms of the GNU General Public License as published by the Free 9 * Software Foundation; either version 2 of the License, or (at your option) 10 * any later version. 11 * 12 */ 13 14 #ifndef _NETPRIO_CGROUP_H 15 #define _NETPRIO_CGROUP_H 16 #include <linux/cgroup.h> 17 #include <linux/hardirq.h> 18 #include <linux/rcupdate.h> 19 20 21 #if IS_ENABLED(CONFIG_NETPRIO_CGROUP) 22 struct netprio_map { 23 struct rcu_head rcu; 24 u32 priomap_len; 25 u32 priomap[]; 26 }; 27 28 struct cgroup_netprio_state { 29 struct cgroup_subsys_state css; 30 }; 31 32 extern void sock_update_netprioidx(struct sock *sk, struct task_struct *task); 33 34 #if IS_BUILTIN(CONFIG_NETPRIO_CGROUP) 35 36 static inline u32 task_netprioidx(struct task_struct *p) 37 { 38 struct cgroup_subsys_state *css; 39 u32 idx; 40 41 rcu_read_lock(); 42 css = task_subsys_state(p, net_prio_subsys_id); 43 idx = css->cgroup->id; 44 rcu_read_unlock(); 45 return idx; 46 } 47 48 #elif IS_MODULE(CONFIG_NETPRIO_CGROUP) 49 50 static inline u32 task_netprioidx(struct task_struct *p) 51 { 52 struct cgroup_subsys_state *css; 53 u32 idx = 0; 54 55 rcu_read_lock(); 56 css = task_subsys_state(p, net_prio_subsys_id); 57 if (css) 58 idx = css->cgroup->id; 59 rcu_read_unlock(); 60 return idx; 61 } 62 #endif 63 64 #else /* !CONFIG_NETPRIO_CGROUP */ 65 66 static inline u32 task_netprioidx(struct task_struct *p) 67 { 68 return 0; 69 } 70 71 #define sock_update_netprioidx(sk, task) 72 73 #endif /* CONFIG_NETPRIO_CGROUP */ 74 75 #endif /* _NET_CLS_CGROUP_H */ 76