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ipv4: Avoid overhead when no custom FIB rules are installed.
[karo-tx-linux.git] / include / net / netns / ipv4.h
1 /*
2  * ipv4 in net namespaces
3  */
4
5 #ifndef __NETNS_IPV4_H__
6 #define __NETNS_IPV4_H__
7
8 #include <net/inet_frag.h>
9
10 struct ctl_table_header;
11 struct ipv4_devconf;
12 struct fib_rules_ops;
13 struct hlist_head;
14 struct fib_table;
15 struct sock;
16
17 struct netns_ipv4 {
18 #ifdef CONFIG_SYSCTL
19         struct ctl_table_header *forw_hdr;
20         struct ctl_table_header *frags_hdr;
21         struct ctl_table_header *ipv4_hdr;
22         struct ctl_table_header *route_hdr;
23 #endif
24         struct ipv4_devconf     *devconf_all;
25         struct ipv4_devconf     *devconf_dflt;
26 #ifdef CONFIG_IP_MULTIPLE_TABLES
27         struct fib_rules_ops    *rules_ops;
28         bool                    fib_has_custom_rules;
29         struct fib_table        *fib_local;
30         struct fib_table        *fib_main;
31         struct fib_table        *fib_default;
32 #endif
33 #ifdef CONFIG_IP_ROUTE_CLASSID
34         int                     fib_num_tclassid_users;
35 #endif
36         struct hlist_head       *fib_table_hash;
37         struct sock             *fibnl;
38
39         struct sock             **icmp_sk;
40         struct sock             *tcp_sock;
41         struct inet_peer_base   *peers;
42         struct netns_frags      frags;
43 #ifdef CONFIG_NETFILTER
44         struct xt_table         *iptable_filter;
45         struct xt_table         *iptable_mangle;
46         struct xt_table         *iptable_raw;
47         struct xt_table         *arptable_filter;
48 #ifdef CONFIG_SECURITY
49         struct xt_table         *iptable_security;
50 #endif
51         struct xt_table         *nat_table;
52         struct hlist_head       *nat_bysource;
53         unsigned int            nat_htable_size;
54 #endif
55
56         int sysctl_icmp_echo_ignore_all;
57         int sysctl_icmp_echo_ignore_broadcasts;
58         int sysctl_icmp_ignore_bogus_error_responses;
59         int sysctl_icmp_ratelimit;
60         int sysctl_icmp_ratemask;
61         int sysctl_icmp_errors_use_inbound_ifaddr;
62         int sysctl_rt_cache_rebuild_count;
63         int current_rt_cache_rebuild_count;
64
65         unsigned int sysctl_ping_group_range[2];
66         long sysctl_tcp_mem[3];
67
68         atomic_t rt_genid;
69         atomic_t dev_addr_genid;
70
71 #ifdef CONFIG_IP_MROUTE
72 #ifndef CONFIG_IP_MROUTE_MULTIPLE_TABLES
73         struct mr_table         *mrt;
74 #else
75         struct list_head        mr_tables;
76         struct fib_rules_ops    *mr_rules_ops;
77 #endif
78 #endif
79 };
80 #endif