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 	u8 tcp_loose;
28 	u8 tcp_be_liberal;
29 	u8 tcp_max_retrans;
30 	u8 tcp_ignore_invalid_rst;
31 #if IS_ENABLED(CONFIG_NF_FLOW_TABLE)
32 	unsigned int offload_timeout;
33 #endif
34 };
35 
36 enum udp_conntrack {
37 	UDP_CT_UNREPLIED,
38 	UDP_CT_REPLIED,
39 	UDP_CT_MAX
40 };
41 
42 struct nf_udp_net {
43 	unsigned int timeouts[UDP_CT_MAX];
44 #if IS_ENABLED(CONFIG_NF_FLOW_TABLE)
45 	unsigned int offload_timeout;
46 #endif
47 };
48 
49 struct nf_icmp_net {
50 	unsigned int timeout;
51 };
52 
53 #ifdef CONFIG_NF_CT_PROTO_DCCP
54 struct nf_dccp_net {
55 	u8 dccp_loose;
56 	unsigned int dccp_timeout[CT_DCCP_MAX + 1];
57 };
58 #endif
59 
60 #ifdef CONFIG_NF_CT_PROTO_SCTP
61 struct nf_sctp_net {
62 	unsigned int timeouts[SCTP_CONNTRACK_MAX];
63 };
64 #endif
65 
66 #ifdef CONFIG_NF_CT_PROTO_GRE
67 enum gre_conntrack {
68 	GRE_CT_UNREPLIED,
69 	GRE_CT_REPLIED,
70 	GRE_CT_MAX
71 };
72 
73 struct nf_gre_net {
74 	struct list_head	keymap_list;
75 	unsigned int		timeouts[GRE_CT_MAX];
76 };
77 #endif
78 
79 struct nf_ip_net {
80 	struct nf_generic_net   generic;
81 	struct nf_tcp_net	tcp;
82 	struct nf_udp_net	udp;
83 	struct nf_icmp_net	icmp;
84 	struct nf_icmp_net	icmpv6;
85 #ifdef CONFIG_NF_CT_PROTO_DCCP
86 	struct nf_dccp_net	dccp;
87 #endif
88 #ifdef CONFIG_NF_CT_PROTO_SCTP
89 	struct nf_sctp_net	sctp;
90 #endif
91 #ifdef CONFIG_NF_CT_PROTO_GRE
92 	struct nf_gre_net	gre;
93 #endif
94 };
95 
96 struct ct_pcpu {
97 	spinlock_t		lock;
98 	struct hlist_nulls_head unconfirmed;
99 	struct hlist_nulls_head dying;
100 };
101 
102 struct netns_ct {
103 #ifdef CONFIG_NF_CONNTRACK_EVENTS
104 	bool ecache_dwork_pending;
105 #endif
106 	u8			sysctl_log_invalid; /* Log invalid packets */
107 	u8			sysctl_events;
108 	u8			sysctl_acct;
109 	u8			sysctl_auto_assign_helper;
110 	u8			sysctl_tstamp;
111 	u8			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_ip_net	nf_ct_proto;
117 #if defined(CONFIG_NF_CONNTRACK_LABELS)
118 	unsigned int		labels_used;
119 #endif
120 };
121 #endif
122