include/net/netns/ipv4.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  * ipv4 in net namespaces
   4  */
   5
   6 #ifndef __NETNS_IPV4_H__
   7 #define __NETNS_IPV4_H__
   8
   9 #include <linux/uidgid.h>
  10 #include <net/inet_frag.h>
  11 #include <linux/rcupdate.h>
  12
  13 struct tcpm_hash_bucket;
  14 struct ctl_table_header;
  15 struct ipv4_devconf;
  16 struct fib_rules_ops;
  17 struct hlist_head;
  18 struct fib_table;
  19 struct sock;
  20 struct local_ports {
  21         seqlock_t       lock;
  22         int             range[2];
  23         bool            warned;
  24 };
  25
  26 struct ping_group_range {
  27         seqlock_t       lock;
  28         kgid_t          range[2];
  29 };
  30
  31 struct inet_hashinfo;
  32
  33 struct inet_timewait_death_row {
  34         atomic_t                tw_count;
  35
  36         struct inet_hashinfo    *hashinfo ____cacheline_aligned_in_smp;
  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         int sysctl_tcp_early_demux;
 100         int sysctl_udp_early_demux;
 101
 102         int sysctl_fwmark_reflect;
 103         int sysctl_tcp_fwmark_accept;
 104 #ifdef CONFIG_NET_L3_MASTER_DEV
 105         int sysctl_tcp_l3mdev_accept;
 106 #endif
 107         int sysctl_tcp_mtu_probing;
 108         int sysctl_tcp_base_mss;
 109         int sysctl_tcp_probe_threshold;
 110         u32 sysctl_tcp_probe_interval;
 111
 112         int sysctl_tcp_keepalive_time;
 113         int sysctl_tcp_keepalive_probes;
 114         int sysctl_tcp_keepalive_intvl;
 115
 116         int sysctl_tcp_syn_retries;
 117         int sysctl_tcp_synack_retries;
 118         int sysctl_tcp_syncookies;
 119         int sysctl_tcp_reordering;
 120         int sysctl_tcp_retries1;
 121         int sysctl_tcp_retries2;
 122         int sysctl_tcp_orphan_retries;
 123         int sysctl_tcp_fin_timeout;
 124         unsigned int sysctl_tcp_notsent_lowat;
 125         int sysctl_tcp_tw_reuse;
 126         int sysctl_tcp_sack;
 127         int sysctl_tcp_window_scaling;
 128         int sysctl_tcp_timestamps;
 129         struct inet_timewait_death_row tcp_death_row;
 130         int sysctl_max_syn_backlog;
 131
 132 #ifdef CONFIG_NET_L3_MASTER_DEV
 133         int sysctl_udp_l3mdev_accept;
 134 #endif
 135
 136         int sysctl_igmp_max_memberships;
 137         int sysctl_igmp_max_msf;
 138         int sysctl_igmp_llm_reports;
 139         int sysctl_igmp_qrv;
 140
 141         struct ping_group_range ping_group_range;
 142
 143         atomic_t dev_addr_genid;
 144
 145 #ifdef CONFIG_SYSCTL
 146         unsigned long *sysctl_local_reserved_ports;
 147         int sysctl_ip_prot_sock;
 148 #endif
 149
 150 #ifdef CONFIG_IP_MROUTE
 151 #ifndef CONFIG_IP_MROUTE_MULTIPLE_TABLES
 152         struct mr_table         *mrt;
 153 #else
 154         struct list_head        mr_tables;
 155         struct fib_rules_ops    *mr_rules_ops;
 156 #endif
 157 #endif
 158 #ifdef CONFIG_IP_ROUTE_MULTIPATH
 159         int sysctl_fib_multipath_use_neigh;
 160         int sysctl_fib_multipath_hash_policy;
 161 #endif
 162
 163         struct fib_notifier_ops *notifier_ops;
 164         unsigned int    fib_seq;        /* protected by rtnl_mutex */
 165
 166         atomic_t        rt_genid;
 167 };
 168 #endif