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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