LXR linux/include/net/netprio

   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)
  22struct netprio_map {
  23        struct rcu_head rcu;
  24        u32 priomap_len;
  25        u32 priomap[];
  26};
  27
  28void sock_update_netprioidx(struct sock *sk);
  29
  30#if IS_BUILTIN(CONFIG_CGROUP_NET_PRIO)
  31static inline u32 task_netprioidx(struct task_struct *p)
  32{
  33        struct cgroup_subsys_state *css;
  34        u32 idx;
  35
  36        rcu_read_lock();
  37        css = task_css(p, net_prio_subsys_id);
  38        idx = css->cgroup->id;
  39        rcu_read_unlock();
  40        return idx;
  41}
  42#elif IS_MODULE(CONFIG_CGROUP_NET_PRIO)
  43static inline u32 task_netprioidx(struct task_struct *p)
  44{
  45        struct cgroup_subsys_state *css;
  46        u32 idx = 0;
  47
  48        rcu_read_lock();
  49        css = task_css(p, net_prio_subsys_id);
  50        if (css)
  51                idx = css->cgroup->id;
  52        rcu_read_unlock();
  53        return idx;
  54}
  55#endif
  56#else /* !CONFIG_CGROUP_NET_PRIO */
  57static inline u32 task_netprioidx(struct task_struct *p)
  58{
  59        return 0;
  60}
  61
  62#define sock_update_netprioidx(sk)
  63
  64#endif /* CONFIG_CGROUP_NET_PRIO */
  65#endif  /* _NET_CLS_CGROUP_H */
  66