LXR linux/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
  18struct ctl_table_header;
  19struct nf_conntrack_ecache;
  20
  21struct 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
  29struct nf_generic_net {
  30        struct nf_proto_net pn;
  31        unsigned int timeout;
  32};
  33
  34struct 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
  42enum udp_conntrack {
  43        UDP_CT_UNREPLIED,
  44        UDP_CT_REPLIED,
  45        UDP_CT_MAX
  46};
  47
  48struct nf_udp_net {
  49        struct nf_proto_net pn;
  50        unsigned int timeouts[UDP_CT_MAX];
  51};
  52
  53struct nf_icmp_net {
  54        struct nf_proto_net pn;
  55        unsigned int timeout;
  56};
  57
  58#ifdef CONFIG_NF_CT_PROTO_DCCP
  59struct 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
  67struct nf_sctp_net {
  68        struct nf_proto_net pn;
  69        unsigned int timeouts[SCTP_CONNTRACK_MAX];
  70};
  71#endif
  72
  73struct 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
  87struct ct_pcpu {
  88        spinlock_t              lock;
  89        struct hlist_nulls_head unconfirmed;
  90        struct hlist_nulls_head dying;
  91};
  92
  93struct 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
 125