ip_state.h

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    1 /*
    2  * Copyright (C) 1995-1997 by Darren Reed.
    3  *
    4  * Redistribution and use in source and binary forms are permitted
    5  * provided that this notice is preserved and due credit is given
    6  * to the original author and the contributors.
    7  *
    8  * @(#)ip_state.h       1.3 1/12/96 (C) 1995 Darren Reed
    9  * $FreeBSD$
   10  */
   11 #ifndef __IP_STATE_H__
   12 #define __IP_STATE_H__
   13 
   14 #define IPSTATE_SIZE    257
   15 #define IPSTATE_MAX     2048    /* Maximum number of states held */
   16 
   17 #define PAIRS(s1,d1,s2,d2)      ((((s1) == (s2)) && ((d1) == (d2))) ||\
   18                                  (((s1) == (d2)) && ((d1) == (s2))))
   19 #define IPPAIR(s1,d1,s2,d2)     PAIRS((s1).s_addr, (d1).s_addr, \
   20                                       (s2).s_addr, (d2).s_addr)
   21 
   22 
   23 typedef struct udpstate {
   24         u_short us_sport;
   25         u_short us_dport;
   26 } udpstate_t;
   27 
   28 typedef struct icmpstate {
   29         u_short ics_id;
   30         u_short ics_seq;
   31         u_char  ics_type;
   32 } icmpstate_t;
   33 
   34 typedef struct tcpstate {
   35         u_short ts_sport;
   36         u_short ts_dport;
   37         u_long  ts_seq;
   38         u_long  ts_ack;
   39         u_short ts_swin;
   40         u_short ts_dwin;
   41         u_char  ts_state[2];
   42 } tcpstate_t;
   43 
   44 typedef struct ipstate {
   45         struct  ipstate *is_next;
   46         u_long  is_age;
   47         u_int   is_pass;
   48         U_QUAD_T        is_pkts;
   49         U_QUAD_T        is_bytes;
   50         void    *is_ifpin;
   51         void    *is_ifpout;
   52         struct  in_addr is_src;
   53         struct  in_addr is_dst;
   54         u_char  is_p;
   55         u_char  is_flags;
   56         u_32_t  is_opt;
   57         u_32_t  is_optmsk;
   58         u_short is_sec;
   59         u_short is_secmsk;
   60         u_short is_auth;
   61         u_short is_authmsk;
   62         union {
   63                 icmpstate_t     is_ics;
   64                 tcpstate_t      is_ts;
   65                 udpstate_t      is_us;
   66         } is_ps;
   67 } ipstate_t;
   68 
   69 #define is_icmp is_ps.is_ics
   70 #define is_tcp  is_ps.is_ts
   71 #define is_udp  is_ps.is_us
   72 #define is_seq  is_tcp.ts_seq
   73 #define is_ack  is_tcp.ts_ack
   74 #define is_dwin is_tcp.ts_dwin
   75 #define is_swin is_tcp.ts_swin
   76 #define is_sport        is_tcp.ts_sport
   77 #define is_dport        is_tcp.ts_dport
   78 #define is_state        is_tcp.ts_state
   79 
   80 #define TH_OPENING      (TH_SYN|TH_ACK)
   81 
   82 
   83 typedef struct  ipslog  {
   84         U_QUAD_T        isl_pkts;
   85         U_QUAD_T        isl_bytes;
   86         struct  in_addr isl_src;
   87         struct  in_addr isl_dst;
   88         u_char  isl_p;
   89         u_char  isl_flags;
   90         u_short isl_type;
   91         union {
   92                 u_short isl_filler[2];
   93                 u_short isl_ports[2];
   94                 u_short isl_icmp;
   95         } isl_ps;
   96 } ipslog_t;
   97 
   98 #define isl_sport       isl_ps.isl_ports[0]
   99 #define isl_dport       isl_ps.isl_ports[1]
  100 #define isl_itype       isl_ps.isl_icmp
  101 
  102 #define ISL_NEW         0
  103 #define ISL_EXPIRE      0xffff
  104 #define ISL_FLUSH       0xfffe
  105 
  106 
  107 typedef struct  ips_stat {
  108         u_long  iss_hits;
  109         u_long  iss_miss;
  110         u_long  iss_max;
  111         u_long  iss_tcp;
  112         u_long  iss_udp;
  113         u_long  iss_icmp;
  114         u_long  iss_nomem;
  115         u_long  iss_expire;
  116         u_long  iss_fin;
  117         u_long  iss_active;
  118         u_long  iss_logged;
  119         u_long  iss_logfail;
  120         ipstate_t **iss_table;
  121 } ips_stat_t;
  122 
  123 
  124 extern  u_long  fr_tcpidletimeout;
  125 extern  u_long  fr_tcpclosewait;
  126 extern  u_long  fr_tcplastack;
  127 extern  u_long  fr_tcptimeout;
  128 extern  u_long  fr_tcpclosed;
  129 extern  u_long  fr_udptimeout;
  130 extern  u_long  fr_icmptimeout;
  131 extern  int     fr_tcpstate __P((ipstate_t *, fr_info_t *, ip_t *, tcphdr_t *));
  132 extern  int     fr_addstate __P((ip_t *, fr_info_t *, u_int));
  133 extern  int     fr_checkstate __P((ip_t *, fr_info_t *));
  134 extern  void    fr_timeoutstate __P((void));
  135 extern  void    fr_tcp_age __P((u_long *, u_char *, ip_t *, fr_info_t *, int));
  136 extern  void    fr_stateunload __P((void));
  137 extern  void    ipstate_log __P((struct ipstate *, u_short));
  138 #if defined(__NetBSD__) || defined(__OpenBSD__)
  139 extern  int     fr_state_ioctl __P((caddr_t, u_long, int));
  140 #else
  141 extern  int     fr_state_ioctl __P((caddr_t, int, int));
  142 #endif
  143 
  144 #endif /* __IP_STATE_H__ */

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FreeBSD/Linux Kernel Cross Reference sys/netinet/ip_state.h

FreeBSD/Linux Kernel Cross Reference
sys/netinet/ip_state.h