include/net/netns/conntrack.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef __NETNS_CONNTRACK_H
   3 #define __NETNS_CONNTRACK_H
   4
   5 #include <linux/list.h>
   6 #include <linux/list_nulls.h>
   7 #include <linux/atomic.h>
   8 #include <linux/workqueue.h>
   9 #include <linux/netfilter/nf_conntrack_tcp.h>
  10 #ifdef CONFIG_NF_CT_PROTO_DCCP
  11 #include <linux/netfilter/nf_conntrack_dccp.h>
  12 #endif
  13 #ifdef CONFIG_NF_CT_PROTO_SCTP
  14 #include <linux/netfilter/nf_conntrack_sctp.h>
  15 #endif
  16 #include <linux/seqlock.h>
  17
  18 struct ctl_table_header;
  19 struct nf_conntrack_ecache;
  20
  21 struct nf_proto_net {
  22 #ifdef CONFIG_SYSCTL
  23         struct ctl_table_header *ctl_table_header;
  24         struct ctl_table        *ctl_table;
  25 #endif
  26         unsigned int            users;
  27 };
  28
  29 struct nf_generic_net {
  30         struct nf_proto_net pn;
  31         unsigned int timeout;
  32 };
  33
  34 struct nf_tcp_net {
  35         struct nf_proto_net pn;
  36         unsigned int timeouts[TCP_CONNTRACK_TIMEOUT_MAX];
  37         unsigned int tcp_loose;
  38         unsigned int tcp_be_liberal;
  39         unsigned int tcp_max_retrans;
  40 };
  41
  42 enum udp_conntrack {
  43         UDP_CT_UNREPLIED,
  44         UDP_CT_REPLIED,
  45         UDP_CT_MAX
  46 };
  47
  48 struct nf_udp_net {
  49         struct nf_proto_net pn;
  50         unsigned int timeouts[UDP_CT_MAX];
  51 };
  52
  53 struct nf_icmp_net {
  54         struct nf_proto_net pn;
  55         unsigned int timeout;
  56 };
  57
  58 #ifdef CONFIG_NF_CT_PROTO_DCCP
  59 struct nf_dccp_net {
  60         struct nf_proto_net pn;
  61         int dccp_loose;
  62         unsigned int dccp_timeout[CT_DCCP_MAX + 1];
  63 };
  64 #endif
  65
  66 #ifdef CONFIG_NF_CT_PROTO_SCTP
  67 struct nf_sctp_net {
  68         struct nf_proto_net pn;
  69         unsigned int timeouts[SCTP_CONNTRACK_MAX];
  70 };
  71 #endif
  72
  73 struct nf_ip_net {
  74         struct nf_generic_net   generic;
  75         struct nf_tcp_net       tcp;
  76         struct nf_udp_net       udp;
  77         struct nf_icmp_net      icmp;
  78         struct nf_icmp_net      icmpv6;
  79 #ifdef CONFIG_NF_CT_PROTO_DCCP
  80         struct nf_dccp_net      dccp;
  81 #endif
  82 #ifdef CONFIG_NF_CT_PROTO_SCTP
  83         struct nf_sctp_net      sctp;
  84 #endif
  85 };
  86
  87 struct ct_pcpu {
  88         spinlock_t              lock;
  89         struct hlist_nulls_head unconfirmed;
  90         struct hlist_nulls_head dying;
  91 };
  92
  93 struct netns_ct {
  94         atomic_t                count;
  95         unsigned int            expect_count;
  96 #ifdef CONFIG_NF_CONNTRACK_EVENTS
  97         struct delayed_work ecache_dwork;
  98         bool ecache_dwork_pending;
  99 #endif
 100 #ifdef CONFIG_SYSCTL
 101         struct ctl_table_header *sysctl_header;
 102         struct ctl_table_header *acct_sysctl_header;
 103         struct ctl_table_header *tstamp_sysctl_header;
 104         struct ctl_table_header *event_sysctl_header;
 105         struct ctl_table_header *helper_sysctl_header;
 106 #endif
 107         unsigned int            sysctl_log_invalid; /* Log invalid packets */
 108         int                     sysctl_events;
 109         int                     sysctl_acct;
 110         int                     sysctl_auto_assign_helper;
 111         bool                    auto_assign_helper_warned;
 112         int                     sysctl_tstamp;
 113         int                     sysctl_checksum;
 114
 115         struct ct_pcpu __percpu *pcpu_lists;
 116         struct ip_conntrack_stat __percpu *stat;
 117         struct nf_ct_event_notifier __rcu *nf_conntrack_event_cb;
 118         struct nf_exp_event_notifier __rcu *nf_expect_event_cb;
 119         struct nf_ip_net        nf_ct_proto;
 120 #if defined(CONFIG_NF_CONNTRACK_LABELS)
 121         unsigned int            labels_used;
 122 #endif
 123 };
 124 #endif