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 netns_ipv4 { 31 #ifdef CONFIG_SYSCTL 32 struct ctl_table_header *forw_hdr; 33 struct ctl_table_header *frags_hdr; 34 struct ctl_table_header *ipv4_hdr; 35 struct ctl_table_header *route_hdr; 36 struct ctl_table_header *xfrm4_hdr; 37 #endif 38 struct ipv4_devconf *devconf_all; 39 struct ipv4_devconf *devconf_dflt; 40 #ifdef CONFIG_IP_MULTIPLE_TABLES 41 struct fib_rules_ops *rules_ops; 42 bool fib_has_custom_rules; 43 struct fib_table __rcu *fib_main; 44 struct fib_table __rcu *fib_default; 45 #endif 46 #ifdef CONFIG_IP_ROUTE_CLASSID 47 int fib_num_tclassid_users; 48 #endif 49 struct hlist_head *fib_table_hash; 50 bool fib_offload_disabled; 51 struct sock *fibnl; 52 53 struct sock * __percpu *icmp_sk; 54 struct sock *mc_autojoin_sk; 55 56 struct inet_peer_base *peers; 57 struct sock * __percpu *tcp_sk; 58 struct netns_frags frags; 59 #ifdef CONFIG_NETFILTER 60 struct xt_table *iptable_filter; 61 struct xt_table *iptable_mangle; 62 struct xt_table *iptable_raw; 63 struct xt_table *arptable_filter; 64 #ifdef CONFIG_SECURITY 65 struct xt_table *iptable_security; 66 #endif 67 struct xt_table *nat_table; 68 #endif 69 70 int sysctl_icmp_echo_ignore_all; 71 int sysctl_icmp_echo_ignore_broadcasts; 72 int sysctl_icmp_ignore_bogus_error_responses; 73 int sysctl_icmp_ratelimit; 74 int sysctl_icmp_ratemask; 75 int sysctl_icmp_errors_use_inbound_ifaddr; 76 77 struct local_ports ip_local_ports; 78 79 int sysctl_tcp_ecn; 80 int sysctl_tcp_ecn_fallback; 81 82 int sysctl_ip_default_ttl; 83 int sysctl_ip_no_pmtu_disc; 84 int sysctl_ip_fwd_use_pmtu; 85 int sysctl_ip_nonlocal_bind; 86 /* Shall we try to damage output packets if routing dev changes? */ 87 int sysctl_ip_dynaddr; 88 int sysctl_ip_early_demux; 89 90 int sysctl_fwmark_reflect; 91 int sysctl_tcp_fwmark_accept; 92 #ifdef CONFIG_NET_L3_MASTER_DEV 93 int sysctl_tcp_l3mdev_accept; 94 #endif 95 int sysctl_tcp_mtu_probing; 96 int sysctl_tcp_base_mss; 97 int sysctl_tcp_probe_threshold; 98 u32 sysctl_tcp_probe_interval; 99 100 int sysctl_tcp_keepalive_time; 101 int sysctl_tcp_keepalive_probes; 102 int sysctl_tcp_keepalive_intvl; 103 104 int sysctl_tcp_syn_retries; 105 int sysctl_tcp_synack_retries; 106 int sysctl_tcp_syncookies; 107 int sysctl_tcp_reordering; 108 int sysctl_tcp_retries1; 109 int sysctl_tcp_retries2; 110 int sysctl_tcp_orphan_retries; 111 int sysctl_tcp_fin_timeout; 112 unsigned int sysctl_tcp_notsent_lowat; 113 int sysctl_tcp_tw_reuse; 114 115 int sysctl_igmp_max_memberships; 116 int sysctl_igmp_max_msf; 117 int sysctl_igmp_llm_reports; 118 int sysctl_igmp_qrv; 119 120 struct ping_group_range ping_group_range; 121 122 atomic_t dev_addr_genid; 123 124 #ifdef CONFIG_SYSCTL 125 unsigned long *sysctl_local_reserved_ports; 126 #endif 127 128 #ifdef CONFIG_IP_MROUTE 129 #ifndef CONFIG_IP_MROUTE_MULTIPLE_TABLES 130 struct mr_table *mrt; 131 #else 132 struct list_head mr_tables; 133 struct fib_rules_ops *mr_rules_ops; 134 #endif 135 #endif 136 #ifdef CONFIG_IP_ROUTE_MULTIPATH 137 int sysctl_fib_multipath_use_neigh; 138 #endif 139 140 unsigned int fib_seq; /* protected by rtnl_mutex */ 141 142 atomic_t rt_genid; 143 }; 144 #endif 145