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Linux/include/net/netprio_cgroup.h

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  1 /* SPDX-License-Identifier: GPL-2.0-or-later */
  2 /*
  3  * netprio_cgroup.h                     Control Group Priority set
  4  *
  5  * Authors:     Neil Horman <nhorman@tuxdriver.com>
  6  */
  7 
  8 #ifndef _NETPRIO_CGROUP_H
  9 #define _NETPRIO_CGROUP_H
 10 
 11 #include <linux/cgroup.h>
 12 #include <linux/hardirq.h>
 13 #include <linux/rcupdate.h>
 14 
 15 #if IS_ENABLED(CONFIG_CGROUP_NET_PRIO)
 16 struct netprio_map {
 17         struct rcu_head rcu;
 18         u32 priomap_len;
 19         u32 priomap[];
 20 };
 21 
 22 static inline u32 task_netprioidx(struct task_struct *p)
 23 {
 24         struct cgroup_subsys_state *css;
 25         u32 idx;
 26 
 27         rcu_read_lock();
 28         css = task_css(p, net_prio_cgrp_id);
 29         idx = css->id;
 30         rcu_read_unlock();
 31         return idx;
 32 }
 33 
 34 static inline void sock_update_netprioidx(struct sock_cgroup_data *skcd)
 35 {
 36         if (in_interrupt())
 37                 return;
 38 
 39         sock_cgroup_set_prioidx(skcd, task_netprioidx(current));
 40 }
 41 
 42 #else /* !CONFIG_CGROUP_NET_PRIO */
 43 
 44 static inline u32 task_netprioidx(struct task_struct *p)
 45 {
 46         return 0;
 47 }
 48 
 49 static inline void sock_update_netprioidx(struct sock_cgroup_data *skcd)
 50 {
 51 }
 52 
 53 #endif /* CONFIG_CGROUP_NET_PRIO */
 54 #endif  /* _NET_CLS_CGROUP_H */
 55 

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