1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3  * ipv6 in net namespaces
4  */
5 
6 #include <net/inet_frag.h>
7 
8 #ifndef __NETNS_IPV6_H__
9 #define __NETNS_IPV6_H__
10 #include <net/dst_ops.h>
11 #include <uapi/linux/icmpv6.h>
12 
13 struct ctl_table_header;
14 
15 struct netns_sysctl_ipv6 {
16 #ifdef CONFIG_SYSCTL
17 	struct ctl_table_header *hdr;
18 	struct ctl_table_header *route_hdr;
19 	struct ctl_table_header *icmp_hdr;
20 	struct ctl_table_header *frags_hdr;
21 	struct ctl_table_header *xfrm6_hdr;
22 #endif
23 	int flush_delay;
24 	int ip6_rt_max_size;
25 	int ip6_rt_gc_min_interval;
26 	int ip6_rt_gc_timeout;
27 	int ip6_rt_gc_interval;
28 	int ip6_rt_gc_elasticity;
29 	int ip6_rt_mtu_expires;
30 	int ip6_rt_min_advmss;
31 	u32 multipath_hash_fields;
32 	u8 multipath_hash_policy;
33 	u8 bindv6only;
34 	u8 flowlabel_consistency;
35 	u8 auto_flowlabels;
36 	int icmpv6_time;
37 	u8 icmpv6_echo_ignore_all;
38 	u8 icmpv6_echo_ignore_multicast;
39 	u8 icmpv6_echo_ignore_anycast;
40 	DECLARE_BITMAP(icmpv6_ratemask, ICMPV6_MSG_MAX + 1);
41 	unsigned long *icmpv6_ratemask_ptr;
42 	u8 anycast_src_echo_reply;
43 	u8 ip_nonlocal_bind;
44 	u8 fwmark_reflect;
45 	u8 flowlabel_state_ranges;
46 	int idgen_retries;
47 	int idgen_delay;
48 	int flowlabel_reflect;
49 	int max_dst_opts_cnt;
50 	int max_hbh_opts_cnt;
51 	int max_dst_opts_len;
52 	int max_hbh_opts_len;
53 	int seg6_flowlabel;
54 	u32 ioam6_id;
55 	u64 ioam6_id_wide;
56 	bool skip_notify_on_dev_down;
57 	u8 fib_notify_on_flag_change;
58 };
59 
60 struct netns_ipv6 {
61 	/* Keep ip6_dst_ops at the beginning of netns_sysctl_ipv6 */
62 	struct dst_ops		ip6_dst_ops;
63 
64 	struct netns_sysctl_ipv6 sysctl;
65 	struct ipv6_devconf	*devconf_all;
66 	struct ipv6_devconf	*devconf_dflt;
67 	struct inet_peer_base	*peers;
68 	struct fqdir		*fqdir;
69 	struct fib6_info	*fib6_null_entry;
70 	struct rt6_info		*ip6_null_entry;
71 	struct rt6_statistics   *rt6_stats;
72 	struct timer_list       ip6_fib_timer;
73 	struct hlist_head       *fib_table_hash;
74 	struct fib6_table       *fib6_main_tbl;
75 	struct list_head	fib6_walkers;
76 	rwlock_t		fib6_walker_lock;
77 	spinlock_t		fib6_gc_lock;
78 	unsigned int		 ip6_rt_gc_expire;
79 	unsigned long		 ip6_rt_last_gc;
80 #ifdef CONFIG_IPV6_MULTIPLE_TABLES
81 	unsigned int		fib6_rules_require_fldissect;
82 	bool			fib6_has_custom_rules;
83 #ifdef CONFIG_IPV6_SUBTREES
84 	unsigned int		fib6_routes_require_src;
85 #endif
86 	struct rt6_info         *ip6_prohibit_entry;
87 	struct rt6_info         *ip6_blk_hole_entry;
88 	struct fib6_table       *fib6_local_tbl;
89 	struct fib_rules_ops    *fib6_rules_ops;
90 #endif
91 	struct sock * __percpu	*icmp_sk;
92 	struct sock             *ndisc_sk;
93 	struct sock             *tcp_sk;
94 	struct sock             *igmp_sk;
95 	struct sock		*mc_autojoin_sk;
96 #ifdef CONFIG_IPV6_MROUTE
97 #ifndef CONFIG_IPV6_MROUTE_MULTIPLE_TABLES
98 	struct mr_table		*mrt6;
99 #else
100 	struct list_head	mr6_tables;
101 	struct fib_rules_ops	*mr6_rules_ops;
102 #endif
103 #endif
104 	atomic_t		dev_addr_genid;
105 	atomic_t		fib6_sernum;
106 	struct seg6_pernet_data *seg6_data;
107 	struct fib_notifier_ops	*notifier_ops;
108 	struct fib_notifier_ops	*ip6mr_notifier_ops;
109 	unsigned int ipmr_seq; /* protected by rtnl_mutex */
110 	struct {
111 		struct hlist_head head;
112 		spinlock_t	lock;
113 		u32		seq;
114 	} ip6addrlbl_table;
115 	struct ioam6_pernet_data *ioam6_data;
116 };
117 
118 #if IS_ENABLED(CONFIG_NF_DEFRAG_IPV6)
119 struct netns_nf_frag {
120 	struct fqdir	*fqdir;
121 };
122 #endif
123 
124 #endif
125