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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 u32 prioidx;
31};
32
33extern void sock_update_netprioidx(struct sock *sk, struct task_struct *task);
34
35#if IS_BUILTIN(CONFIG_NETPRIO_CGROUP)
36
37static inline u32 task_netprioidx(struct task_struct *p)
38{
39 struct cgroup_netprio_state *state;
40 u32 idx;
41
42 rcu_read_lock();
43 state = container_of(task_subsys_state(p, net_prio_subsys_id),
44 struct cgroup_netprio_state, css);
45 idx = state->prioidx;
46 rcu_read_unlock();
47 return idx;
48}
49
50#elif IS_MODULE(CONFIG_NETPRIO_CGROUP)
51
52static inline u32 task_netprioidx(struct task_struct *p)
53{
54 struct cgroup_subsys_state *css;
55 u32 idx = 0;
56
57 rcu_read_lock();
58 css = task_subsys_state(p, net_prio_subsys_id);
59 if (css)
60 idx = container_of(css,
61 struct cgroup_netprio_state, css)->prioidx;
62 rcu_read_unlock();
63 return idx;
64}
65#endif
66
67#else /* !CONFIG_NETPRIO_CGROUP */
68
69static inline u32 task_netprioidx(struct task_struct *p)
70{
71 return 0;
72}
73
74#define sock_update_netprioidx(sk, task)
75
76#endif /* CONFIG_NETPRIO_CGROUP */
77
78#endif /* _NET_CLS_CGROUP_H */