| 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(task: p, subsys_id: 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, prioidx: 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 |