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 17 #include <linux/cgroup.h> 18 #include <linux/hardirq.h> 19 #include <linux/rcupdate.h> 20 21 #if IS_ENABLED(CONFIG_CGROUP_NET_PRIO) 22 struct netprio_map { 23 struct rcu_head rcu; 24 u32 priomap_len; 25 u32 priomap[]; 26 }; 27 28 static inline u32 task_netprioidx(struct task_struct *p) 29 { 30 struct cgroup_subsys_state *css; 31 u32 idx; 32 33 rcu_read_lock(); 34 css = task_css(p, net_prio_cgrp_id); 35 idx = css->cgroup->id; 36 rcu_read_unlock(); 37 return idx; 38 } 39 40 static inline void sock_update_netprioidx(struct sock_cgroup_data *skcd) 41 { 42 if (in_interrupt()) 43 return; 44 45 sock_cgroup_set_prioidx(skcd, task_netprioidx(current)); 46 } 47 48 #else /* !CONFIG_CGROUP_NET_PRIO */ 49 50 static inline u32 task_netprioidx(struct task_struct *p) 51 { 52 return 0; 53 } 54 55 static inline void sock_update_netprioidx(struct sock_cgroup_data *skcd) 56 { 57 } 58 59 #endif /* CONFIG_CGROUP_NET_PRIO */ 60 #endif /* _NET_CLS_CGROUP_H */ 61