1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 * Copyright (c) 2008, Intel Corporation.
4 *
5 * Author: Alexander Duyck <alexander.h.duyck@intel.com>
6 */
7
8#ifndef __NET_TC_SKBEDIT_H
9#define __NET_TC_SKBEDIT_H
10
11#include <net/act_api.h>
12#include <linux/tc_act/tc_skbedit.h>
13
14struct tcf_skbedit_params {
15	u32 flags;
16	u32 priority;
17	u32 mark;
18	u32 mask;
19	u16 queue_mapping;
20	u16 mapping_mod;
21	u16 ptype;
22	struct rcu_head rcu;
23};
24
25struct tcf_skbedit {
26	struct tc_action common;
27	struct tcf_skbedit_params __rcu *params;
28};
29#define to_skbedit(a) ((struct tcf_skbedit *)a)
30
31/* Return true iff action is the one identified by FLAG. */
32static inline bool is_tcf_skbedit_with_flag(const struct tc_action *a, u32 flag)
33{
34#ifdef CONFIG_NET_CLS_ACT
35	u32 flags;
36
37	if (a->ops && a->ops->id == TCA_ID_SKBEDIT) {
38		rcu_read_lock();
39		flags = rcu_dereference(to_skbedit(a)->params)->flags;
40		rcu_read_unlock();
41		return flags == flag;
42	}
43#endif
44	return false;
45}
46
47/* Return true iff action is mark */
48static inline bool is_tcf_skbedit_mark(const struct tc_action *a)
49{
50	return is_tcf_skbedit_with_flag(a, SKBEDIT_F_MARK);
51}
52
53static inline u32 tcf_skbedit_mark(const struct tc_action *a)
54{
55	u32 mark;
56
57	rcu_read_lock();
58	mark = rcu_dereference(to_skbedit(a)->params)->mark;
59	rcu_read_unlock();
60
61	return mark;
62}
63
64/* Return true iff action is ptype */
65static inline bool is_tcf_skbedit_ptype(const struct tc_action *a)
66{
67	return is_tcf_skbedit_with_flag(a, SKBEDIT_F_PTYPE);
68}
69
70static inline u32 tcf_skbedit_ptype(const struct tc_action *a)
71{
72	u16 ptype;
73
74	rcu_read_lock();
75	ptype = rcu_dereference(to_skbedit(a)->params)->ptype;
76	rcu_read_unlock();
77
78	return ptype;
79}
80
81/* Return true iff action is priority */
82static inline bool is_tcf_skbedit_priority(const struct tc_action *a)
83{
84	return is_tcf_skbedit_with_flag(a, SKBEDIT_F_PRIORITY);
85}
86
87static inline u32 tcf_skbedit_priority(const struct tc_action *a)
88{
89	u32 priority;
90
91	rcu_read_lock();
92	priority = rcu_dereference(to_skbedit(a)->params)->priority;
93	rcu_read_unlock();
94
95	return priority;
96}
97
98static inline u16 tcf_skbedit_rx_queue_mapping(const struct tc_action *a)
99{
100	u16 rx_queue;
101
102	rcu_read_lock();
103	rx_queue = rcu_dereference(to_skbedit(a)->params)->queue_mapping;
104	rcu_read_unlock();
105
106	return rx_queue;
107}
108
109/* Return true iff action is queue_mapping */
110static inline bool is_tcf_skbedit_queue_mapping(const struct tc_action *a)
111{
112	return is_tcf_skbedit_with_flag(a, SKBEDIT_F_QUEUE_MAPPING);
113}
114
115/* Return true if action is on ingress traffic */
116static inline bool is_tcf_skbedit_ingress(u32 flags)
117{
118	return flags & TCA_ACT_FLAGS_AT_INGRESS;
119}
120
121static inline bool is_tcf_skbedit_tx_queue_mapping(const struct tc_action *a)
122{
123	return is_tcf_skbedit_queue_mapping(a) &&
124	       !is_tcf_skbedit_ingress(a->tcfa_flags);
125}
126
127static inline bool is_tcf_skbedit_rx_queue_mapping(const struct tc_action *a)
128{
129	return is_tcf_skbedit_queue_mapping(a) &&
130	       is_tcf_skbedit_ingress(a->tcfa_flags);
131}
132
133/* Return true iff action is inheritdsfield */
134static inline bool is_tcf_skbedit_inheritdsfield(const struct tc_action *a)
135{
136	return is_tcf_skbedit_with_flag(a, SKBEDIT_F_INHERITDSFIELD);
137}
138
139#endif /* __NET_TC_SKBEDIT_H */
140