xref: /linux/include/net/netprio_cgroup.h (revision db53c73a) 
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 
task_netprioidx(struct task_struct * p)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 
sock_update_netprioidx(struct sock_cgroup_data * skcd)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 
task_netprioidx(struct task_struct * p)44 static inline u32 task_netprioidx(struct task_struct *p)
45 {
46 	return 0;
47 }
48 
sock_update_netprioidx(struct sock_cgroup_data * skcd)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