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 
14 struct tcf_skbedit_params {
15 	u32 flags;
16 	u32 priority;
17 	u32 mark;
18 	u32 mask;
19 	u16 queue_mapping;
20 	u16 ptype;
21 	struct rcu_head rcu;
22 };
23 
24 struct tcf_skbedit {
25 	struct tc_action common;
26 	struct tcf_skbedit_params __rcu *params;
27 };
28 #define to_skbedit(a) ((struct tcf_skbedit *)a)
29 
30 /* Return true iff action is the one identified by FLAG. */
is_tcf_skbedit_with_flag(const struct tc_action * a,u32 flag)31 static inline bool is_tcf_skbedit_with_flag(const struct tc_action *a, u32 flag)
32 {
33 #ifdef CONFIG_NET_CLS_ACT
34 	u32 flags;
35 
36 	if (a->ops && a->ops->id == TCA_ID_SKBEDIT) {
37 		rcu_read_lock();
38 		flags = rcu_dereference(to_skbedit(a)->params)->flags;
39 		rcu_read_unlock();
40 		return flags == flag;
41 	}
42 #endif
43 	return false;
44 }
45 
46 /* Return true iff action is mark */
is_tcf_skbedit_mark(const struct tc_action * a)47 static inline bool is_tcf_skbedit_mark(const struct tc_action *a)
48 {
49 	return is_tcf_skbedit_with_flag(a, SKBEDIT_F_MARK);
50 }
51 
tcf_skbedit_mark(const struct tc_action * a)52 static inline u32 tcf_skbedit_mark(const struct tc_action *a)
53 {
54 	u32 mark;
55 
56 	rcu_read_lock();
57 	mark = rcu_dereference(to_skbedit(a)->params)->mark;
58 	rcu_read_unlock();
59 
60 	return mark;
61 }
62 
63 /* Return true iff action is ptype */
is_tcf_skbedit_ptype(const struct tc_action * a)64 static inline bool is_tcf_skbedit_ptype(const struct tc_action *a)
65 {
66 	return is_tcf_skbedit_with_flag(a, SKBEDIT_F_PTYPE);
67 }
68 
tcf_skbedit_ptype(const struct tc_action * a)69 static inline u32 tcf_skbedit_ptype(const struct tc_action *a)
70 {
71 	u16 ptype;
72 
73 	rcu_read_lock();
74 	ptype = rcu_dereference(to_skbedit(a)->params)->ptype;
75 	rcu_read_unlock();
76 
77 	return ptype;
78 }
79 
80 /* Return true iff action is priority */
is_tcf_skbedit_priority(const struct tc_action * a)81 static inline bool is_tcf_skbedit_priority(const struct tc_action *a)
82 {
83 	return is_tcf_skbedit_with_flag(a, SKBEDIT_F_PRIORITY);
84 }
85 
tcf_skbedit_priority(const struct tc_action * a)86 static inline u32 tcf_skbedit_priority(const struct tc_action *a)
87 {
88 	u32 priority;
89 
90 	rcu_read_lock();
91 	priority = rcu_dereference(to_skbedit(a)->params)->priority;
92 	rcu_read_unlock();
93 
94 	return priority;
95 }
96 
97 #endif /* __NET_TC_SKBEDIT_H */
98