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_tw_recycle; 37 int sysctl_max_tw_buckets; 38 }; 39 40 struct netns_ipv4 { 41 #ifdef CONFIG_SYSCTL 42 struct ctl_table_header *forw_hdr; 43 struct ctl_table_header *frags_hdr; 44 struct ctl_table_header *ipv4_hdr; 45 struct ctl_table_header *route_hdr; 46 struct ctl_table_header *xfrm4_hdr; 47 #endif 48 struct ipv4_devconf *devconf_all; 49 struct ipv4_devconf *devconf_dflt; 50 #ifdef CONFIG_IP_MULTIPLE_TABLES 51 struct fib_rules_ops *rules_ops; 52 bool fib_has_custom_rules; 53 struct fib_table __rcu *fib_main; 54 struct fib_table __rcu *fib_default; 55 #endif 56 #ifdef CONFIG_IP_ROUTE_CLASSID 57 int fib_num_tclassid_users; 58 #endif 59 struct hlist_head *fib_table_hash; 60 bool fib_offload_disabled; 61 struct sock *fibnl; 62 63 struct sock * __percpu *icmp_sk; 64 struct sock *mc_autojoin_sk; 65 66 struct inet_peer_base *peers; 67 struct sock * __percpu *tcp_sk; 68 struct netns_frags frags; 69 #ifdef CONFIG_NETFILTER 70 struct xt_table *iptable_filter; 71 struct xt_table *iptable_mangle; 72 struct xt_table *iptable_raw; 73 struct xt_table *arptable_filter; 74 #ifdef CONFIG_SECURITY 75 struct xt_table *iptable_security; 76 #endif 77 struct xt_table *nat_table; 78 #endif 79 80 int sysctl_icmp_echo_ignore_all; 81 int sysctl_icmp_echo_ignore_broadcasts; 82 int sysctl_icmp_ignore_bogus_error_responses; 83 int sysctl_icmp_ratelimit; 84 int sysctl_icmp_ratemask; 85 int sysctl_icmp_errors_use_inbound_ifaddr; 86 87 struct local_ports ip_local_ports; 88 89 int sysctl_tcp_ecn; 90 int sysctl_tcp_ecn_fallback; 91 92 int sysctl_ip_default_ttl; 93 int sysctl_ip_no_pmtu_disc; 94 int sysctl_ip_fwd_use_pmtu; 95 int sysctl_ip_nonlocal_bind; 96 /* Shall we try to damage output packets if routing dev changes? */ 97 int sysctl_ip_dynaddr; 98 int sysctl_ip_early_demux; 99 100 int sysctl_fwmark_reflect; 101 int sysctl_tcp_fwmark_accept; 102 #ifdef CONFIG_NET_L3_MASTER_DEV 103 int sysctl_tcp_l3mdev_accept; 104 #endif 105 int sysctl_tcp_mtu_probing; 106 int sysctl_tcp_base_mss; 107 int sysctl_tcp_probe_threshold; 108 u32 sysctl_tcp_probe_interval; 109 110 int sysctl_tcp_keepalive_time; 111 int sysctl_tcp_keepalive_probes; 112 int sysctl_tcp_keepalive_intvl; 113 114 int sysctl_tcp_syn_retries; 115 int sysctl_tcp_synack_retries; 116 int sysctl_tcp_syncookies; 117 int sysctl_tcp_reordering; 118 int sysctl_tcp_retries1; 119 int sysctl_tcp_retries2; 120 int sysctl_tcp_orphan_retries; 121 int sysctl_tcp_fin_timeout; 122 unsigned int sysctl_tcp_notsent_lowat; 123 int sysctl_tcp_tw_reuse; 124 struct inet_timewait_death_row tcp_death_row; 125 int sysctl_max_syn_backlog; 126 127 #ifdef CONFIG_NET_L3_MASTER_DEV 128 int sysctl_udp_l3mdev_accept; 129 #endif 130 131 int sysctl_igmp_max_memberships; 132 int sysctl_igmp_max_msf; 133 int sysctl_igmp_llm_reports; 134 int sysctl_igmp_qrv; 135 136 struct ping_group_range ping_group_range; 137 138 atomic_t dev_addr_genid; 139 140 #ifdef CONFIG_SYSCTL 141 unsigned long *sysctl_local_reserved_ports; 142 int sysctl_ip_prot_sock; 143 #endif 144 145 #ifdef CONFIG_IP_MROUTE 146 #ifndef CONFIG_IP_MROUTE_MULTIPLE_TABLES 147 struct mr_table *mrt; 148 #else 149 struct list_head mr_tables; 150 struct fib_rules_ops *mr_rules_ops; 151 #endif 152 #endif 153 #ifdef CONFIG_IP_ROUTE_MULTIPATH 154 int sysctl_fib_multipath_use_neigh; 155 #endif 156 157 unsigned int fib_seq; /* protected by rtnl_mutex */ 158 159 atomic_t rt_genid; 160 }; 161 #endif 162