1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef __NETNS_CONNTRACK_H
3#define __NETNS_CONNTRACK_H
4
5#include <linux/list.h>
6#include <linux/list_nulls.h>
7#include <linux/atomic.h>
8#include <linux/workqueue.h>
9#include <linux/netfilter/nf_conntrack_tcp.h>
10#ifdef CONFIG_NF_CT_PROTO_DCCP
11#include <linux/netfilter/nf_conntrack_dccp.h>
12#endif
13#ifdef CONFIG_NF_CT_PROTO_SCTP
14#include <linux/netfilter/nf_conntrack_sctp.h>
15#endif
16#include <linux/seqlock.h>
17
18struct ctl_table_header;
19struct nf_conntrack_ecache;
20
21struct nf_generic_net {
22	unsigned int timeout;
23};
24
25struct nf_tcp_net {
26	unsigned int timeouts[TCP_CONNTRACK_TIMEOUT_MAX];
27	int tcp_loose;
28	int tcp_be_liberal;
29	int tcp_max_retrans;
30};
31
32enum udp_conntrack {
33	UDP_CT_UNREPLIED,
34	UDP_CT_REPLIED,
35	UDP_CT_MAX
36};
37
38struct nf_udp_net {
39	unsigned int timeouts[UDP_CT_MAX];
40};
41
42struct nf_icmp_net {
43	unsigned int timeout;
44};
45
46#ifdef CONFIG_NF_CT_PROTO_DCCP
47struct nf_dccp_net {
48	int dccp_loose;
49	unsigned int dccp_timeout[CT_DCCP_MAX + 1];
50};
51#endif
52
53#ifdef CONFIG_NF_CT_PROTO_SCTP
54struct nf_sctp_net {
55	unsigned int timeouts[SCTP_CONNTRACK_MAX];
56};
57#endif
58
59#ifdef CONFIG_NF_CT_PROTO_GRE
60enum gre_conntrack {
61	GRE_CT_UNREPLIED,
62	GRE_CT_REPLIED,
63	GRE_CT_MAX
64};
65
66struct nf_gre_net {
67	struct list_head	keymap_list;
68	unsigned int		timeouts[GRE_CT_MAX];
69};
70#endif
71
72struct nf_ip_net {
73	struct nf_generic_net   generic;
74	struct nf_tcp_net	tcp;
75	struct nf_udp_net	udp;
76	struct nf_icmp_net	icmp;
77	struct nf_icmp_net	icmpv6;
78#ifdef CONFIG_NF_CT_PROTO_DCCP
79	struct nf_dccp_net	dccp;
80#endif
81#ifdef CONFIG_NF_CT_PROTO_SCTP
82	struct nf_sctp_net	sctp;
83#endif
84#ifdef CONFIG_NF_CT_PROTO_GRE
85	struct nf_gre_net	gre;
86#endif
87};
88
89struct ct_pcpu {
90	spinlock_t		lock;
91	struct hlist_nulls_head unconfirmed;
92	struct hlist_nulls_head dying;
93};
94
95struct netns_ct {
96	atomic_t		count;
97	unsigned int		expect_count;
98#ifdef CONFIG_NF_CONNTRACK_EVENTS
99	struct delayed_work ecache_dwork;
100	bool ecache_dwork_pending;
101#endif
102	bool			auto_assign_helper_warned;
103#ifdef CONFIG_SYSCTL
104	struct ctl_table_header	*sysctl_header;
105#endif
106	unsigned int		sysctl_log_invalid; /* Log invalid packets */
107	int			sysctl_events;
108	int			sysctl_acct;
109	int			sysctl_auto_assign_helper;
110	int			sysctl_tstamp;
111	int			sysctl_checksum;
112
113	struct ct_pcpu __percpu *pcpu_lists;
114	struct ip_conntrack_stat __percpu *stat;
115	struct nf_ct_event_notifier __rcu *nf_conntrack_event_cb;
116	struct nf_exp_event_notifier __rcu *nf_expect_event_cb;
117	struct nf_ip_net	nf_ct_proto;
118#if defined(CONFIG_NF_CONNTRACK_LABELS)
119	unsigned int		labels_used;
120#endif
121};
122#endif
123