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#include <linux/cgroup.h>
  17#include <linux/hardirq.h>
  18#include <linux/rcupdate.h>
  19
  20
  21#if IS_ENABLED(CONFIG_NETPRIO_CGROUP)
  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_NETPRIO_CGROUP)
  31
  32static 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
  46static 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
  62static 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