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_proto_net {
22 #ifdef CONFIG_SYSCTL
23 	struct ctl_table_header *ctl_table_header;
24 	struct ctl_table        *ctl_table;
25 #endif
26 	unsigned int		users;
27 };
28 
29 struct nf_generic_net {
30 	struct nf_proto_net pn;
31 	unsigned int timeout;
32 };
33 
34 struct nf_tcp_net {
35 	struct nf_proto_net pn;
36 	unsigned int timeouts[TCP_CONNTRACK_TIMEOUT_MAX];
37 	unsigned int tcp_loose;
38 	unsigned int tcp_be_liberal;
39 	unsigned int tcp_max_retrans;
40 };
41 
42 enum udp_conntrack {
43 	UDP_CT_UNREPLIED,
44 	UDP_CT_REPLIED,
45 	UDP_CT_MAX
46 };
47 
48 struct nf_udp_net {
49 	struct nf_proto_net pn;
50 	unsigned int timeouts[UDP_CT_MAX];
51 };
52 
53 struct nf_icmp_net {
54 	struct nf_proto_net pn;
55 	unsigned int timeout;
56 };
57 
58 #ifdef CONFIG_NF_CT_PROTO_DCCP
59 struct nf_dccp_net {
60 	struct nf_proto_net pn;
61 	int dccp_loose;
62 	unsigned int dccp_timeout[CT_DCCP_MAX + 1];
63 };
64 #endif
65 
66 #ifdef CONFIG_NF_CT_PROTO_SCTP
67 struct nf_sctp_net {
68 	struct nf_proto_net pn;
69 	unsigned int timeouts[SCTP_CONNTRACK_MAX];
70 };
71 #endif
72 
73 struct nf_ip_net {
74 	struct nf_generic_net   generic;
75 	struct nf_tcp_net	tcp;
76 	struct nf_udp_net	udp;
77 	struct nf_icmp_net	icmp;
78 	struct nf_icmp_net	icmpv6;
79 #ifdef CONFIG_NF_CT_PROTO_DCCP
80 	struct nf_dccp_net	dccp;
81 #endif
82 #ifdef CONFIG_NF_CT_PROTO_SCTP
83 	struct nf_sctp_net	sctp;
84 #endif
85 };
86 
87 struct ct_pcpu {
88 	spinlock_t		lock;
89 	struct hlist_nulls_head unconfirmed;
90 	struct hlist_nulls_head dying;
91 };
92 
93 struct netns_ct {
94 	atomic_t		count;
95 	unsigned int		expect_count;
96 #ifdef CONFIG_NF_CONNTRACK_EVENTS
97 	struct delayed_work ecache_dwork;
98 	bool ecache_dwork_pending;
99 #endif
100 #ifdef CONFIG_SYSCTL
101 	struct ctl_table_header	*sysctl_header;
102 	struct ctl_table_header	*acct_sysctl_header;
103 	struct ctl_table_header	*tstamp_sysctl_header;
104 	struct ctl_table_header	*event_sysctl_header;
105 	struct ctl_table_header	*helper_sysctl_header;
106 #endif
107 	unsigned int		sysctl_log_invalid; /* Log invalid packets */
108 	int			sysctl_events;
109 	int			sysctl_acct;
110 	int			sysctl_auto_assign_helper;
111 	bool			auto_assign_helper_warned;
112 	int			sysctl_tstamp;
113 	int			sysctl_checksum;
114 
115 	struct ct_pcpu __percpu *pcpu_lists;
116 	struct ip_conntrack_stat __percpu *stat;
117 	struct nf_ct_event_notifier __rcu *nf_conntrack_event_cb;
118 	struct nf_exp_event_notifier __rcu *nf_expect_event_cb;
119 	struct nf_ip_net	nf_ct_proto;
120 #if defined(CONFIG_NF_CONNTRACK_LABELS)
121 	unsigned int		labels_used;
122 #endif
123 };
124 #endif
125