xref: /openbmc/linux/include/net/netns/ipv4.h (revision 8ee90c5c)
1 /*
2  * ipv4 in net namespaces
3  */
4 
5 #ifndef __NETNS_IPV4_H__
6 #define __NETNS_IPV4_H__
7 
8 #include <linux/uidgid.h>
9 #include <net/inet_frag.h>
10 #include <linux/rcupdate.h>
11 
12 struct tcpm_hash_bucket;
13 struct ctl_table_header;
14 struct ipv4_devconf;
15 struct fib_rules_ops;
16 struct hlist_head;
17 struct fib_table;
18 struct sock;
19 struct local_ports {
20 	seqlock_t	lock;
21 	int		range[2];
22 	bool		warned;
23 };
24 
25 struct ping_group_range {
26 	seqlock_t	lock;
27 	kgid_t		range[2];
28 };
29 
30 struct inet_hashinfo;
31 
32 struct inet_timewait_death_row {
33 	atomic_t		tw_count;
34 
35 	struct inet_hashinfo 	*hashinfo ____cacheline_aligned_in_smp;
36 	int			sysctl_max_tw_buckets;
37 };
38 
39 struct netns_ipv4 {
40 #ifdef CONFIG_SYSCTL
41 	struct ctl_table_header	*forw_hdr;
42 	struct ctl_table_header	*frags_hdr;
43 	struct ctl_table_header	*ipv4_hdr;
44 	struct ctl_table_header *route_hdr;
45 	struct ctl_table_header *xfrm4_hdr;
46 #endif
47 	struct ipv4_devconf	*devconf_all;
48 	struct ipv4_devconf	*devconf_dflt;
49 #ifdef CONFIG_IP_MULTIPLE_TABLES
50 	struct fib_rules_ops	*rules_ops;
51 	bool			fib_has_custom_rules;
52 	struct fib_table __rcu	*fib_main;
53 	struct fib_table __rcu	*fib_default;
54 #endif
55 #ifdef CONFIG_IP_ROUTE_CLASSID
56 	int			fib_num_tclassid_users;
57 #endif
58 	struct hlist_head	*fib_table_hash;
59 	bool			fib_offload_disabled;
60 	struct sock		*fibnl;
61 
62 	struct sock  * __percpu	*icmp_sk;
63 	struct sock		*mc_autojoin_sk;
64 
65 	struct inet_peer_base	*peers;
66 	struct sock  * __percpu	*tcp_sk;
67 	struct netns_frags	frags;
68 #ifdef CONFIG_NETFILTER
69 	struct xt_table		*iptable_filter;
70 	struct xt_table		*iptable_mangle;
71 	struct xt_table		*iptable_raw;
72 	struct xt_table		*arptable_filter;
73 #ifdef CONFIG_SECURITY
74 	struct xt_table		*iptable_security;
75 #endif
76 	struct xt_table		*nat_table;
77 #endif
78 
79 	int sysctl_icmp_echo_ignore_all;
80 	int sysctl_icmp_echo_ignore_broadcasts;
81 	int sysctl_icmp_ignore_bogus_error_responses;
82 	int sysctl_icmp_ratelimit;
83 	int sysctl_icmp_ratemask;
84 	int sysctl_icmp_errors_use_inbound_ifaddr;
85 
86 	struct local_ports ip_local_ports;
87 
88 	int sysctl_tcp_ecn;
89 	int sysctl_tcp_ecn_fallback;
90 
91 	int sysctl_ip_default_ttl;
92 	int sysctl_ip_no_pmtu_disc;
93 	int sysctl_ip_fwd_use_pmtu;
94 	int sysctl_ip_nonlocal_bind;
95 	/* Shall we try to damage output packets if routing dev changes? */
96 	int sysctl_ip_dynaddr;
97 	int sysctl_ip_early_demux;
98 	int sysctl_tcp_early_demux;
99 	int sysctl_udp_early_demux;
100 
101 	int sysctl_fwmark_reflect;
102 	int sysctl_tcp_fwmark_accept;
103 #ifdef CONFIG_NET_L3_MASTER_DEV
104 	int sysctl_tcp_l3mdev_accept;
105 #endif
106 	int sysctl_tcp_mtu_probing;
107 	int sysctl_tcp_base_mss;
108 	int sysctl_tcp_probe_threshold;
109 	u32 sysctl_tcp_probe_interval;
110 
111 	int sysctl_tcp_keepalive_time;
112 	int sysctl_tcp_keepalive_probes;
113 	int sysctl_tcp_keepalive_intvl;
114 
115 	int sysctl_tcp_syn_retries;
116 	int sysctl_tcp_synack_retries;
117 	int sysctl_tcp_syncookies;
118 	int sysctl_tcp_reordering;
119 	int sysctl_tcp_retries1;
120 	int sysctl_tcp_retries2;
121 	int sysctl_tcp_orphan_retries;
122 	int sysctl_tcp_fin_timeout;
123 	unsigned int sysctl_tcp_notsent_lowat;
124 	int sysctl_tcp_tw_reuse;
125 	int sysctl_tcp_sack;
126 	int sysctl_tcp_window_scaling;
127 	int sysctl_tcp_timestamps;
128 	struct inet_timewait_death_row tcp_death_row;
129 	int sysctl_max_syn_backlog;
130 
131 #ifdef CONFIG_NET_L3_MASTER_DEV
132 	int sysctl_udp_l3mdev_accept;
133 #endif
134 
135 	int sysctl_igmp_max_memberships;
136 	int sysctl_igmp_max_msf;
137 	int sysctl_igmp_llm_reports;
138 	int sysctl_igmp_qrv;
139 
140 	struct ping_group_range ping_group_range;
141 
142 	atomic_t dev_addr_genid;
143 
144 #ifdef CONFIG_SYSCTL
145 	unsigned long *sysctl_local_reserved_ports;
146 	int sysctl_ip_prot_sock;
147 #endif
148 
149 #ifdef CONFIG_IP_MROUTE
150 #ifndef CONFIG_IP_MROUTE_MULTIPLE_TABLES
151 	struct mr_table		*mrt;
152 #else
153 	struct list_head	mr_tables;
154 	struct fib_rules_ops	*mr_rules_ops;
155 #endif
156 #endif
157 #ifdef CONFIG_IP_ROUTE_MULTIPATH
158 	int sysctl_fib_multipath_use_neigh;
159 	int sysctl_fib_multipath_hash_policy;
160 #endif
161 
162 	struct fib_notifier_ops	*notifier_ops;
163 	unsigned int	fib_seq;	/* protected by rtnl_mutex */
164 
165 	atomic_t	rt_genid;
166 };
167 #endif
168