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 
18 struct ctl_table_header;
19 struct nf_conntrack_ecache;
20 
21 struct nf_generic_net {
22 	unsigned int timeout;
23 };
24 
25 struct 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 
32 enum udp_conntrack {
33 	UDP_CT_UNREPLIED,
34 	UDP_CT_REPLIED,
35 	UDP_CT_MAX
36 };
37 
38 struct nf_udp_net {
39 	unsigned int timeouts[UDP_CT_MAX];
40 };
41 
42 struct nf_icmp_net {
43 	unsigned int timeout;
44 };
45 
46 #ifdef CONFIG_NF_CT_PROTO_DCCP
47 struct 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
54 struct nf_sctp_net {
55 	unsigned int timeouts[SCTP_CONNTRACK_MAX];
56 };
57 #endif
58 
59 #ifdef CONFIG_NF_CT_PROTO_GRE
60 enum gre_conntrack {
61 	GRE_CT_UNREPLIED,
62 	GRE_CT_REPLIED,
63 	GRE_CT_MAX
64 };
65 
66 struct nf_gre_net {
67 	struct list_head	keymap_list;
68 	unsigned int		timeouts[GRE_CT_MAX];
69 };
70 #endif
71 
72 struct 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 
89 struct ct_pcpu {
90 	spinlock_t		lock;
91 	struct hlist_nulls_head unconfirmed;
92 	struct hlist_nulls_head dying;
93 };
94 
95 struct 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