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 void sock_update_netprioidx(struct sock *sk); 29 30 #if IS_BUILTIN(CONFIG_NETPRIO_CGROUP) 31 32 static inline u32 task_netprioidx(struct task_struct *p) 33 { 34 struct cgroup_subsys_state *css; 35 u32 idx; 36 37 rcu_read_lock(); 38 css = task_css(p, net_prio_subsys_id); 39 idx = css->cgroup->id; 40 rcu_read_unlock(); 41 return idx; 42 } 43 44 #elif IS_MODULE(CONFIG_NETPRIO_CGROUP) 45 46 static inline u32 task_netprioidx(struct task_struct *p) 47 { 48 struct cgroup_subsys_state *css; 49 u32 idx = 0; 50 51 rcu_read_lock(); 52 css = task_css(p, net_prio_subsys_id); 53 if (css) 54 idx = css->cgroup->id; 55 rcu_read_unlock(); 56 return idx; 57 } 58 #endif 59 60 #else /* !CONFIG_NETPRIO_CGROUP */ 61 62 static inline u32 task_netprioidx(struct task_struct *p) 63 { 64 return 0; 65 } 66 67 #define sock_update_netprioidx(sk) 68 69 #endif /* CONFIG_NETPRIO_CGROUP */ 70 71 #endif /* _NET_CLS_CGROUP_H */ 72