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 #include <linux/cgroup.h>
  17 #include <linux/hardirq.h>
  18 #include <linux/rcupdate.h>
  19
  20
  21 struct netprio_map {
  22         struct rcu_head rcu;
  23         u32 priomap_len;
  24         u32 priomap[];
  25 };
  26
  27 #ifdef CONFIG_CGROUPS
  28
  29 struct cgroup_netprio_state {
  30         struct cgroup_subsys_state css;
  31         u32 prioidx;
  32 };
  33
  34 #ifndef CONFIG_NETPRIO_CGROUP
  35 extern int net_prio_subsys_id;
  36 #endif
  37
  38 extern void sock_update_netprioidx(struct sock *sk);
  39
  40 static inline struct cgroup_netprio_state
  41                 *task_netprio_state(struct task_struct *p)
  42 {
  43 #if IS_ENABLED(CONFIG_NETPRIO_CGROUP)
  44         return container_of(task_subsys_state(p, net_prio_subsys_id),
  45                             struct cgroup_netprio_state, css);
  46 #else
  47         return NULL;
  48 #endif
  49 }
  50
  51 #else
  52
  53 #define sock_update_netprioidx(sk)
  54 #endif
  55
  56 #endif  /* _NET_CLS_CGROUP_H */