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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) |
22 | struct netprio_map { |
23 | struct rcu_head rcu; |
24 | u32 priomap_len; |
25 | u32 priomap[]; |
26 | }; |
27 | |
28 | void sock_update_netprioidx(struct sock *sk); |
29 | |
30 | #if IS_BUILTIN(CONFIG_NETPRIO_CGROUP) |
31 | |
32 | static 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 | |
46 | static 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 | |
62 | static 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 |
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