include/net/netprio_cgroup.h

   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 */