1/* SPDX-License-Identifier: GPL-2.0 */
 2#ifndef __NET_TC_CT_H
 3#define __NET_TC_CT_H
 4
 5#include <net/act_api.h>
 6#include <uapi/linux/tc_act/tc_ct.h>
 7
 8#if IS_ENABLED(CONFIG_NF_CONNTRACK)
 9#include <net/netfilter/nf_nat.h>
10#include <net/netfilter/nf_conntrack_labels.h>
11
12struct tcf_ct_params {
13	struct nf_conntrack_helper *helper;
14	struct nf_conn *tmpl;
15	u16 zone;
16
17	u32 mark;
18	u32 mark_mask;
19
20	u32 labels[NF_CT_LABELS_MAX_SIZE / sizeof(u32)];
21	u32 labels_mask[NF_CT_LABELS_MAX_SIZE / sizeof(u32)];
22
23	struct nf_nat_range2 range;
24	bool ipv4_range;
25
26	u16 ct_action;
27
28	struct rcu_head rcu;
29
30	struct tcf_ct_flow_table *ct_ft;
31	struct nf_flowtable *nf_ft;
32};
33
34struct tcf_ct {
35	struct tc_action common;
36	struct tcf_ct_params __rcu *params;
37};
38
39#define to_ct(a) ((struct tcf_ct *)a)
40#define to_ct_params(a)							\
41	((struct tcf_ct_params *)					\
42	 rcu_dereference_protected(to_ct(a)->params,			\
43				   lockdep_is_held(&a->tcfa_lock)))
44
45static inline uint16_t tcf_ct_zone(const struct tc_action *a)
46{
47	return to_ct_params(a)->zone;
48}
49
50static inline int tcf_ct_action(const struct tc_action *a)
51{
52	return to_ct_params(a)->ct_action;
53}
54
55static inline struct nf_flowtable *tcf_ct_ft(const struct tc_action *a)
56{
57	return to_ct_params(a)->nf_ft;
58}
59
60#else
61static inline uint16_t tcf_ct_zone(const struct tc_action *a) { return 0; }
62static inline int tcf_ct_action(const struct tc_action *a) { return 0; }
63static inline struct nf_flowtable *tcf_ct_ft(const struct tc_action *a)
64{
65	return NULL;
66}
67#endif /* CONFIG_NF_CONNTRACK */
68
69#if IS_ENABLED(CONFIG_NET_ACT_CT)
70static inline void
71tcf_ct_flow_table_restore_skb(struct sk_buff *skb, unsigned long cookie)
72{
73	enum ip_conntrack_info ctinfo = cookie & NFCT_INFOMASK;
74	struct nf_conn *ct;
75
76	ct = (struct nf_conn *)(cookie & NFCT_PTRMASK);
77	nf_conntrack_get(&ct->ct_general);
78	nf_ct_set(skb, ct, ctinfo);
79}
80#else
81static inline void
82tcf_ct_flow_table_restore_skb(struct sk_buff *skb, unsigned long cookie) { }
83#endif
84
85static inline bool is_tcf_ct(const struct tc_action *a)
86{
87#if defined(CONFIG_NET_CLS_ACT) && IS_ENABLED(CONFIG_NF_CONNTRACK)
88	if (a->ops && a->ops->id == TCA_ID_CT)
89		return true;
90#endif
91	return false;
92}
93
94#endif /* __NET_TC_CT_H */