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 unsigned int fib_seq; /* protected by rtnl_mutex */ 163 164 atomic_t rt_genid; 165 }; 166 #endif 167