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 */