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kernel/linux-imx6_3.14.28/include/net/netprio_cgroup.h 1.39 KB
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  /*
   * netprio_cgroup.h			Control Group Priority set
   *
   *
   * Authors:	Neil Horman <nhorman@tuxdriver.com>
   *
   * This program is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License as published by the Free
   * Software Foundation; either version 2 of the License, or (at your option)
   * any later version.
   *
   */
  
  #ifndef _NETPRIO_CGROUP_H
  #define _NETPRIO_CGROUP_H
  
  #include <linux/cgroup.h>
  #include <linux/hardirq.h>
  #include <linux/rcupdate.h>
  
  #if IS_ENABLED(CONFIG_CGROUP_NET_PRIO)
  struct netprio_map {
  	struct rcu_head rcu;
  	u32 priomap_len;
  	u32 priomap[];
  };
  
  void sock_update_netprioidx(struct sock *sk);
  
  #if IS_BUILTIN(CONFIG_CGROUP_NET_PRIO)
  static inline u32 task_netprioidx(struct task_struct *p)
  {
  	struct cgroup_subsys_state *css;
  	u32 idx;
  
  	rcu_read_lock();
  	css = task_css(p, net_prio_subsys_id);
  	idx = css->cgroup->id;
  	rcu_read_unlock();
  	return idx;
  }
  #elif IS_MODULE(CONFIG_CGROUP_NET_PRIO)
  static inline u32 task_netprioidx(struct task_struct *p)
  {
  	struct cgroup_subsys_state *css;
  	u32 idx = 0;
  
  	rcu_read_lock();
  	css = task_css(p, net_prio_subsys_id);
  	if (css)
  		idx = css->cgroup->id;
  	rcu_read_unlock();
  	return idx;
  }
  #endif
  #else /* !CONFIG_CGROUP_NET_PRIO */
  static inline u32 task_netprioidx(struct task_struct *p)
  {
  	return 0;
  }
  
  #define sock_update_netprioidx(sk)
  
  #endif /* CONFIG_CGROUP_NET_PRIO */
  #endif  /* _NET_CLS_CGROUP_H */