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 tcp_fastopen_context; 40 41 struct netns_ipv4 { 42 #ifdef CONFIG_SYSCTL 43 struct ctl_table_header *forw_hdr; 44 struct ctl_table_header *frags_hdr; 45 struct ctl_table_header *ipv4_hdr; 46 struct ctl_table_header *route_hdr; 47 struct ctl_table_header *xfrm4_hdr; 48 #endif 49 struct ipv4_devconf *devconf_all; 50 struct ipv4_devconf *devconf_dflt; 51 #ifdef CONFIG_IP_MULTIPLE_TABLES 52 struct fib_rules_ops *rules_ops; 53 bool fib_has_custom_rules; 54 struct fib_table __rcu *fib_main; 55 struct fib_table __rcu *fib_default; 56 #endif 57 bool fib_has_custom_local_routes; 58 #ifdef CONFIG_IP_ROUTE_CLASSID 59 int fib_num_tclassid_users; 60 #endif 61 struct hlist_head *fib_table_hash; 62 bool fib_offload_disabled; 63 struct sock *fibnl; 64 65 struct sock * __percpu *icmp_sk; 66 struct sock *mc_autojoin_sk; 67 68 struct inet_peer_base *peers; 69 struct sock * __percpu *tcp_sk; 70 struct netns_frags frags; 71 #ifdef CONFIG_NETFILTER 72 struct xt_table *iptable_filter; 73 struct xt_table *iptable_mangle; 74 struct xt_table *iptable_raw; 75 struct xt_table *arptable_filter; 76 #ifdef CONFIG_SECURITY 77 struct xt_table *iptable_security; 78 #endif 79 struct xt_table *nat_table; 80 #endif 81 82 int sysctl_icmp_echo_ignore_all; 83 int sysctl_icmp_echo_ignore_broadcasts; 84 int sysctl_icmp_ignore_bogus_error_responses; 85 int sysctl_icmp_ratelimit; 86 int sysctl_icmp_ratemask; 87 int sysctl_icmp_errors_use_inbound_ifaddr; 88 89 struct local_ports ip_local_ports; 90 91 int sysctl_tcp_ecn; 92 int sysctl_tcp_ecn_fallback; 93 94 int sysctl_ip_default_ttl; 95 int sysctl_ip_no_pmtu_disc; 96 int sysctl_ip_fwd_use_pmtu; 97 int sysctl_ip_nonlocal_bind; 98 /* Shall we try to damage output packets if routing dev changes? */ 99 int sysctl_ip_dynaddr; 100 int sysctl_ip_early_demux; 101 int sysctl_tcp_early_demux; 102 int sysctl_udp_early_demux; 103 104 int sysctl_fwmark_reflect; 105 int sysctl_tcp_fwmark_accept; 106 #ifdef CONFIG_NET_L3_MASTER_DEV 107 int sysctl_tcp_l3mdev_accept; 108 #endif 109 int sysctl_tcp_mtu_probing; 110 int sysctl_tcp_base_mss; 111 int sysctl_tcp_probe_threshold; 112 u32 sysctl_tcp_probe_interval; 113 114 int sysctl_tcp_keepalive_time; 115 int sysctl_tcp_keepalive_probes; 116 int sysctl_tcp_keepalive_intvl; 117 118 int sysctl_tcp_syn_retries; 119 int sysctl_tcp_synack_retries; 120 int sysctl_tcp_syncookies; 121 int sysctl_tcp_reordering; 122 int sysctl_tcp_retries1; 123 int sysctl_tcp_retries2; 124 int sysctl_tcp_orphan_retries; 125 int sysctl_tcp_fin_timeout; 126 unsigned int sysctl_tcp_notsent_lowat; 127 int sysctl_tcp_tw_reuse; 128 int sysctl_tcp_sack; 129 int sysctl_tcp_window_scaling; 130 int sysctl_tcp_timestamps; 131 struct inet_timewait_death_row tcp_death_row; 132 int sysctl_max_syn_backlog; 133 int sysctl_tcp_fastopen; 134 struct tcp_fastopen_context __rcu *tcp_fastopen_ctx; 135 spinlock_t tcp_fastopen_ctx_lock; 136 unsigned int sysctl_tcp_fastopen_blackhole_timeout; 137 atomic_t tfo_active_disable_times; 138 unsigned long tfo_active_disable_stamp; 139 140 #ifdef CONFIG_NET_L3_MASTER_DEV 141 int sysctl_udp_l3mdev_accept; 142 #endif 143 144 int sysctl_igmp_max_memberships; 145 int sysctl_igmp_max_msf; 146 int sysctl_igmp_llm_reports; 147 int sysctl_igmp_qrv; 148 149 struct ping_group_range ping_group_range; 150 151 atomic_t dev_addr_genid; 152 153 #ifdef CONFIG_SYSCTL 154 unsigned long *sysctl_local_reserved_ports; 155 int sysctl_ip_prot_sock; 156 #endif 157 158 #ifdef CONFIG_IP_MROUTE 159 #ifndef CONFIG_IP_MROUTE_MULTIPLE_TABLES 160 struct mr_table *mrt; 161 #else 162 struct list_head mr_tables; 163 struct fib_rules_ops *mr_rules_ops; 164 #endif 165 #endif 166 #ifdef CONFIG_IP_ROUTE_MULTIPATH 167 int sysctl_fib_multipath_use_neigh; 168 int sysctl_fib_multipath_hash_policy; 169 #endif 170 171 struct fib_notifier_ops *notifier_ops; 172 unsigned int fib_seq; /* protected by rtnl_mutex */ 173 174 struct fib_notifier_ops *ipmr_notifier_ops; 175 unsigned int ipmr_seq; /* protected by rtnl_mutex */ 176 177 atomic_t rt_genid; 178 }; 179 #endif 180