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Linux kernel mirror (for testing)
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kernel
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linux
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
28struct cgroup_netprio_state {
29 struct cgroup_subsys_state css;
30};
31
32extern void sock_update_netprioidx(struct sock *sk);
33
34#if IS_BUILTIN(CONFIG_NETPRIO_CGROUP)
35
36static inline u32 task_netprioidx(struct task_struct *p)
37{
38 struct cgroup_subsys_state *css;
39 u32 idx;
40
41 rcu_read_lock();
42 css = task_subsys_state(p, net_prio_subsys_id);
43 idx = css->cgroup->id;
44 rcu_read_unlock();
45 return idx;
46}
47
48#elif IS_MODULE(CONFIG_NETPRIO_CGROUP)
49
50static inline u32 task_netprioidx(struct task_struct *p)
51{
52 struct cgroup_subsys_state *css;
53 u32 idx = 0;
54
55 rcu_read_lock();
56 css = task_subsys_state(p, net_prio_subsys_id);
57 if (css)
58 idx = css->cgroup->id;
59 rcu_read_unlock();
60 return idx;
61}
62#endif
63
64#else /* !CONFIG_NETPRIO_CGROUP */
65
66static inline u32 task_netprioidx(struct task_struct *p)
67{
68 return 0;
69}
70
71#define sock_update_netprioidx(sk)
72
73#endif /* CONFIG_NETPRIO_CGROUP */
74
75#endif /* _NET_CLS_CGROUP_H */