| 1/* $FreeBSD: head/sys/contrib/ipfilter/netinet/ip_state.h 145522 2005-04-25 18:43:14Z darrenr $ */ 2
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1/* 2 * Copyright (C) 1995-2001 by Darren Reed. 3 * 4 * See the IPFILTER.LICENCE file for details on licencing. 5 * 6 * @(#)ip_state.h 1.3 1/12/96 (C) 1995 Darren Reed
| 3/* 4 * Copyright (C) 1995-2001 by Darren Reed. 5 * 6 * See the IPFILTER.LICENCE file for details on licencing. 7 * 8 * @(#)ip_state.h 1.3 1/12/96 (C) 1995 Darren Reed
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7 * $Id: ip_state.h,v 2.13.2.1 2000/07/08 02:15:35 darrenr Exp $ 8 * $FreeBSD: head/sys/contrib/ipfilter/netinet/ip_state.h 139255 2004-12-24 09:14:26Z darrenr $
| 9 * $FreeBSD: head/sys/contrib/ipfilter/netinet/ip_state.h 145522 2005-04-25 18:43:14Z darrenr $ 10 * Id: ip_state.h,v 2.68.2.3 2005/03/03 14:24:11 darrenr Exp
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9 */ 10#ifndef __IP_STATE_H__ 11#define __IP_STATE_H__ 12 13#if defined(__STDC__) || defined(__GNUC__)
| 11 */ 12#ifndef __IP_STATE_H__ 13#define __IP_STATE_H__ 14 15#if defined(__STDC__) || defined(__GNUC__)
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14# define SIOCDELST _IOW('r', 61, struct ipstate *)
| 16# define SIOCDELST _IOW('r', 61, struct ipfobj)
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15#else
| 17#else
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16# define SIOCDELST _IOW(r, 61, struct ipstate *)
| 18# define SIOCDELST _IOW(r, 61, struct ipfobj)
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17#endif 18
| 19#endif 20
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| 21struct ipscan; 22
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19#ifndef IPSTATE_SIZE 20# define IPSTATE_SIZE 5737 21#endif 22#ifndef IPSTATE_MAX 23# define IPSTATE_MAX 4013 /* Maximum number of states held */ 24#endif 25 26#define PAIRS(s1,d1,s2,d2) ((((s1) == (s2)) && ((d1) == (d2))) ||\ 27 (((s1) == (d2)) && ((d1) == (s2)))) 28#define IPPAIR(s1,d1,s2,d2) PAIRS((s1).s_addr, (d1).s_addr, \ 29 (s2).s_addr, (d2).s_addr) 30 31
| 23#ifndef IPSTATE_SIZE 24# define IPSTATE_SIZE 5737 25#endif 26#ifndef IPSTATE_MAX 27# define IPSTATE_MAX 4013 /* Maximum number of states held */ 28#endif 29 30#define PAIRS(s1,d1,s2,d2) ((((s1) == (s2)) && ((d1) == (d2))) ||\ 31 (((s1) == (d2)) && ((d1) == (s2)))) 32#define IPPAIR(s1,d1,s2,d2) PAIRS((s1).s_addr, (d1).s_addr, \ 33 (s2).s_addr, (d2).s_addr) 34 35
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32typedef struct udpstate { 33 u_short us_sport; 34 u_short us_dport; 35} udpstate_t; 36 37typedef struct icmpstate { 38 u_short ics_id; 39 u_short ics_seq; 40 u_char ics_type; 41} icmpstate_t; 42 43typedef struct tcpdata { 44 u_32_t td_end; 45 u_32_t td_maxend; 46 u_32_t td_maxwin; 47 u_char td_wscale; 48} tcpdata_t; 49 50typedef struct tcpstate { 51 u_short ts_sport; 52 u_short ts_dport; 53 tcpdata_t ts_data[2]; 54 u_char ts_state[2]; 55} tcpstate_t; 56
| |
57typedef struct ipstate {
| 36typedef struct ipstate {
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| 37 ipfmutex_t is_lock;
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58 struct ipstate *is_next; 59 struct ipstate **is_pnext; 60 struct ipstate *is_hnext; 61 struct ipstate **is_phnext; 62 struct ipstate **is_me;
| 38 struct ipstate *is_next; 39 struct ipstate **is_pnext; 40 struct ipstate *is_hnext; 41 struct ipstate **is_phnext; 42 struct ipstate **is_me;
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| 43 void *is_ifp[4]; 44 void *is_sync; 45 struct nat *is_nat[2];
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63 frentry_t *is_rule;
| 46 frentry_t *is_rule;
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64 U_QUAD_T is_pkts; 65 U_QUAD_T is_bytes; 66 U_QUAD_T is_icmppkts; 67 union i6addr is_src; 68 union i6addr is_dst; 69 void *is_ifp[4]; 70 u_long is_age; 71 u_int is_frage[2]; /* age from filter rule, forward & reverse */
| 47 struct ipftq *is_tqehead[2]; 48 struct ipscan *is_isc; 49 U_QUAD_T is_pkts[4]; 50 U_QUAD_T is_bytes[4]; 51 U_QUAD_T is_icmppkts[4]; 52 struct ipftqent is_sti; 53 u_int is_frage[2]; 54 int is_ref; /* reference count */ 55 int is_isninc[2]; 56 u_short is_sumd[2]; 57 i6addr_t is_src; 58 i6addr_t is_dst;
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72 u_int is_pass; 73 u_char is_p; /* Protocol */
| 59 u_int is_pass; 60 u_char is_p; /* Protocol */
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74 u_char is_v; /* IP version */ 75 u_char is_fsm; /* 1 = following FSM, 0 = not */ 76 u_char is_xxx; /* pad */ 77 u_int is_hv; /* hash value for this in the table */ 78 u_32_t is_rulen; /* rule number */ 79 u_32_t is_flags; /* flags for this structure */
| 61 u_char is_v; 62 u_32_t is_hv; 63 u_32_t is_tag;
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80 u_32_t is_opt; /* packet options set */ 81 u_32_t is_optmsk; /* " " mask */ 82 u_short is_sec; /* security options set */ 83 u_short is_secmsk; /* " " mask */ 84 u_short is_auth; /* authentication options set */ 85 u_short is_authmsk; /* " " mask */ 86 union {
| 64 u_32_t is_opt; /* packet options set */ 65 u_32_t is_optmsk; /* " " mask */ 66 u_short is_sec; /* security options set */ 67 u_short is_secmsk; /* " " mask */ 68 u_short is_auth; /* authentication options set */ 69 u_short is_authmsk; /* " " mask */ 70 union {
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87 icmpstate_t is_ics; 88 tcpstate_t is_ts; 89 udpstate_t is_us;
| 71 icmpinfo_t is_ics; 72 tcpinfo_t is_ts; 73 udpinfo_t is_us; 74 greinfo_t is_ug;
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90 } is_ps;
| 75 } is_ps;
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91 u_32_t is_group; 92 char is_ifname[4][IFNAMSIZ]; 93#if SOLARIS || defined(__sgi) || (__FreeBSD_version >= 500043) 94 kmutex_t is_lock; 95#endif
| 76 u_32_t is_flags; 77 int is_flx[2][2]; 78 u_32_t is_rulen; /* rule number when created */ 79 u_32_t is_s0[2]; 80 u_short is_smsk[2]; 81 char is_group[FR_GROUPLEN]; 82 char is_sbuf[2][16]; 83 char is_ifname[4][LIFNAMSIZ];
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96} ipstate_t; 97
| 84} ipstate_t; 85
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| 86#define is_die is_sti.tqe_die 87#define is_state is_sti.tqe_state 88#define is_touched is_sti.tqe_touched
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98#define is_saddr is_src.in4.s_addr 99#define is_daddr is_dst.in4.s_addr 100#define is_icmp is_ps.is_ics
| 89#define is_saddr is_src.in4.s_addr 90#define is_daddr is_dst.in4.s_addr 91#define is_icmp is_ps.is_ics
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101#define is_type is_icmp.ics_type 102#define is_code is_icmp.ics_code
| 92#define is_type is_icmp.ici_type 93#define is_code is_icmp.ici_code
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103#define is_tcp is_ps.is_ts 104#define is_udp is_ps.is_us 105#define is_send is_tcp.ts_data[0].td_end 106#define is_dend is_tcp.ts_data[1].td_end 107#define is_maxswin is_tcp.ts_data[0].td_maxwin 108#define is_maxdwin is_tcp.ts_data[1].td_maxwin
| 94#define is_tcp is_ps.is_ts 95#define is_udp is_ps.is_us 96#define is_send is_tcp.ts_data[0].td_end 97#define is_dend is_tcp.ts_data[1].td_end 98#define is_maxswin is_tcp.ts_data[0].td_maxwin 99#define is_maxdwin is_tcp.ts_data[1].td_maxwin
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109#define is_swscale is_tcp.ts_data[0].td_wscale 110#define is_dwscale is_tcp.ts_data[1].td_wscale
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111#define is_maxsend is_tcp.ts_data[0].td_maxend 112#define is_maxdend is_tcp.ts_data[1].td_maxend
| 100#define is_maxsend is_tcp.ts_data[0].td_maxend 101#define is_maxdend is_tcp.ts_data[1].td_maxend
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| 102#define is_swinscale is_tcp.ts_data[0].td_winscale 103#define is_dwinscale is_tcp.ts_data[1].td_winscale 104#define is_swinflags is_tcp.ts_data[0].td_winflags 105#define is_dwinflags is_tcp.ts_data[1].td_winflags
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113#define is_sport is_tcp.ts_sport 114#define is_dport is_tcp.ts_dport
| 106#define is_sport is_tcp.ts_sport 107#define is_dport is_tcp.ts_dport
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115#define is_state is_tcp.ts_state
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116#define is_ifpin is_ifp[0] 117#define is_ifpout is_ifp[2]
| 108#define is_ifpin is_ifp[0] 109#define is_ifpout is_ifp[2]
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| 110#define is_gre is_ps.is_ug 111#define is_call is_gre.gs_call
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118
| 112
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| 113#define IS_WSPORT SI_W_SPORT /* 0x00100 */ 114#define IS_WDPORT SI_W_DPORT /* 0x00200 */ 115#define IS_WSADDR SI_W_SADDR /* 0x00400 */ 116#define IS_WDADDR SI_W_DADDR /* 0x00800 */ 117#define IS_NEWFR SI_NEWFR /* 0x01000 */ 118#define IS_CLONE SI_CLONE /* 0x02000 */ 119#define IS_CLONED SI_CLONED /* 0x04000 */ 120#define IS_TCPFSM 0x10000 121#define IS_STRICT 0x20000 122#define IS_ISNSYN 0x40000 123#define IS_ISNACK 0x80000 124#define IS_STATESYNC 0x100000 125/* 126 * IS_SC flags are for scan-operations that need to be recognised in state. 127 */ 128#define IS_SC_CLIENT 0x10000000 129#define IS_SC_SERVER 0x20000000 130#define IS_SC_MATCHC 0x40000000 131#define IS_SC_MATCHS 0x80000000 132#define IS_SC_MATCHALL (IS_SC_MATCHC|IS_SC_MATCHC) 133#define IS_SC_ALL (IS_SC_MATCHC|IS_SC_MATCHC|IS_SC_CLIENT|IS_SC_SERVER) 134 135/* 136 * Flags that can be passed into fr_addstate 137 */ 138#define IS_INHERITED 0x0fffff00 139
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119#define TH_OPENING (TH_SYN|TH_ACK) 120/* 121 * is_flags: 122 * Bits 0 - 3 are use as a mask with the current packet's bits to check for 123 * whether it is short, tcp/udp, a fragment or the presence of IP options. 124 * Bits 4 - 7 are set from the initial packet and contain what the packet 125 * anded with bits 0-3 must match. 126 * Bits 8,9 are used to indicate wildcard source/destination port matching.
| 140#define TH_OPENING (TH_SYN|TH_ACK) 141/* 142 * is_flags: 143 * Bits 0 - 3 are use as a mask with the current packet's bits to check for 144 * whether it is short, tcp/udp, a fragment or the presence of IP options. 145 * Bits 4 - 7 are set from the initial packet and contain what the packet 146 * anded with bits 0-3 must match. 147 * Bits 8,9 are used to indicate wildcard source/destination port matching.
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| 148 * Bits 10,11 are reserved for other wildcard flag compatibility. 149 * Bits 12,13 are for scaning.
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127 */ 128 129typedef struct ipstate_save { 130 void *ips_next; 131 struct ipstate ips_is; 132 struct frentry ips_fr; 133} ipstate_save_t; 134 135#define ips_rule ips_is.is_rule 136 137 138typedef struct ipslog {
| 150 */ 151 152typedef struct ipstate_save { 153 void *ips_next; 154 struct ipstate ips_is; 155 struct frentry ips_fr; 156} ipstate_save_t; 157 158#define ips_rule ips_is.is_rule 159 160 161typedef struct ipslog {
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139 U_QUAD_T isl_pkts; 140 U_QUAD_T isl_bytes; 141 union i6addr isl_src; 142 union i6addr isl_dst;
| 162 U_QUAD_T isl_pkts[4]; 163 U_QUAD_T isl_bytes[4]; 164 i6addr_t isl_src; 165 i6addr_t isl_dst; 166 u_32_t isl_tag;
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143 u_short isl_type; 144 union { 145 u_short isl_filler[2]; 146 u_short isl_ports[2]; 147 u_short isl_icmp; 148 } isl_ps; 149 u_char isl_v; 150 u_char isl_p; 151 u_char isl_flags; 152 u_char isl_state[2]; 153 u_32_t isl_rulen;
| 167 u_short isl_type; 168 union { 169 u_short isl_filler[2]; 170 u_short isl_ports[2]; 171 u_short isl_icmp; 172 } isl_ps; 173 u_char isl_v; 174 u_char isl_p; 175 u_char isl_flags; 176 u_char isl_state[2]; 177 u_32_t isl_rulen;
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154 u_32_t isl_group;
| 178 char isl_group[FR_GROUPLEN];
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155} ipslog_t; 156 157#define isl_sport isl_ps.isl_ports[0] 158#define isl_dport isl_ps.isl_ports[1] 159#define isl_itype isl_ps.isl_icmp 160
| 179} ipslog_t; 180 181#define isl_sport isl_ps.isl_ports[0] 182#define isl_dport isl_ps.isl_ports[1] 183#define isl_itype isl_ps.isl_icmp 184
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161#define ISL_NEW 0 162#define ISL_EXPIRE 0xffff 163#define ISL_FLUSH 0xfffe 164#define ISL_REMOVE 0xfffd
| 185#define ISL_NEW 0 186#define ISL_CLONE 1 187#define ISL_EXPIRE 0xffff 188#define ISL_FLUSH 0xfffe 189#define ISL_REMOVE 0xfffd 190#define ISL_INTERMEDIATE 0xfffc 191#define ISL_KILLED 0xfffb 192#define ISL_ORPHAN 0xfffa
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165 166 167typedef struct ips_stat { 168 u_long iss_hits; 169 u_long iss_miss; 170 u_long iss_max;
| 193 194 195typedef struct ips_stat { 196 u_long iss_hits; 197 u_long iss_miss; 198 u_long iss_max;
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| 199 u_long iss_maxref;
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171 u_long iss_tcp; 172 u_long iss_udp; 173 u_long iss_icmp; 174 u_long iss_nomem; 175 u_long iss_expire; 176 u_long iss_fin; 177 u_long iss_active; 178 u_long iss_logged; 179 u_long iss_logfail; 180 u_long iss_inuse;
| 200 u_long iss_tcp; 201 u_long iss_udp; 202 u_long iss_icmp; 203 u_long iss_nomem; 204 u_long iss_expire; 205 u_long iss_fin; 206 u_long iss_active; 207 u_long iss_logged; 208 u_long iss_logfail; 209 u_long iss_inuse;
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| 210 u_long iss_wild; 211 u_long iss_killed; 212 u_long iss_ticks; 213 u_long iss_bucketfull; 214 int iss_statesize; 215 int iss_statemax;
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181 ipstate_t **iss_table; 182 ipstate_t *iss_list;
| 216 ipstate_t **iss_table; 217 ipstate_t *iss_list;
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| 218 u_long *iss_bucketlen;
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183} ips_stat_t; 184 185 186extern u_long fr_tcpidletimeout; 187extern u_long fr_tcpclosewait; 188extern u_long fr_tcplastack; 189extern u_long fr_tcptimeout; 190extern u_long fr_tcpclosed; 191extern u_long fr_tcphalfclosed; 192extern u_long fr_udptimeout; 193extern u_long fr_udpacktimeout; 194extern u_long fr_icmptimeout; 195extern u_long fr_icmpacktimeout;
| 219} ips_stat_t; 220 221 222extern u_long fr_tcpidletimeout; 223extern u_long fr_tcpclosewait; 224extern u_long fr_tcplastack; 225extern u_long fr_tcptimeout; 226extern u_long fr_tcpclosed; 227extern u_long fr_tcphalfclosed; 228extern u_long fr_udptimeout; 229extern u_long fr_udpacktimeout; 230extern u_long fr_icmptimeout; 231extern u_long fr_icmpacktimeout;
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196extern ipstate_t *ips_list;
| 232extern u_long fr_iptimeout; 233extern int fr_statemax; 234extern int fr_statesize;
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197extern int fr_state_lock;
| 235extern int fr_state_lock;
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| 236extern int fr_state_maxbucket; 237extern int fr_state_maxbucket_reset; 238extern ipstate_t *ips_list; 239extern ipftq_t *ips_utqe; 240extern ipftq_t ips_tqtqb[IPF_TCP_NSTATES]; 241
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198extern int fr_stateinit __P((void));
| 242extern int fr_stateinit __P((void));
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199extern int fr_tcpstate __P((ipstate_t *, fr_info_t *, ip_t *, tcphdr_t *)); 200extern ipstate_t *fr_addstate __P((ip_t *, fr_info_t *, ipstate_t **, u_int)); 201extern frentry_t *fr_checkstate __P((ip_t *, fr_info_t *)); 202extern void ip_statesync __P((void *));
| 243extern ipstate_t *fr_addstate __P((fr_info_t *, ipstate_t **, u_int)); 244extern frentry_t *fr_checkstate __P((struct fr_info *, u_32_t *)); 245extern ipstate_t *fr_stlookup __P((fr_info_t *, tcphdr_t *, ipftq_t **)); 246extern void fr_statesync __P((void *));
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203extern void fr_timeoutstate __P((void));
| 247extern void fr_timeoutstate __P((void));
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204extern int fr_tcp_age __P((u_long *, u_char *, fr_info_t *, int, int));
| 248extern int fr_tcp_age __P((struct ipftqent *, struct fr_info *, 249 struct ipftq *, int)); 250extern int fr_tcpinwindow __P((struct fr_info *, struct tcpdata *, 251 struct tcpdata *, tcphdr_t *, int));
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205extern void fr_stateunload __P((void)); 206extern void ipstate_log __P((struct ipstate *, u_int));
| 252extern void fr_stateunload __P((void)); 253extern void ipstate_log __P((struct ipstate *, u_int));
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207#if defined(__NetBSD__) || defined(__OpenBSD__) 208extern int fr_state_ioctl __P((caddr_t, u_long, int)); 209#else 210extern int fr_state_ioctl __P((caddr_t, int, int)); 211#endif
| 254extern int fr_state_ioctl __P((caddr_t, ioctlcmd_t, int)); 255extern void fr_stinsert __P((struct ipstate *, int)); 256extern void fr_sttab_init __P((struct ipftq *)); 257extern void fr_sttab_destroy __P((struct ipftq *)); 258extern void fr_updatestate __P((fr_info_t *, ipstate_t *, ipftq_t *)); 259extern void fr_statederef __P((fr_info_t *, ipstate_t **)); 260extern void fr_setstatequeue __P((ipstate_t *, int));
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212 213#endif /* __IP_STATE_H__ */
| 261 262#endif /* __IP_STATE_H__ */
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