diff options
Diffstat (limited to 'sys/contrib/ipfilter/netinet/ip_state.h')
| -rw-r--r-- | sys/contrib/ipfilter/netinet/ip_state.h | 263 |
1 files changed, 263 insertions, 0 deletions
diff --git a/sys/contrib/ipfilter/netinet/ip_state.h b/sys/contrib/ipfilter/netinet/ip_state.h new file mode 100644 index 0000000..ca7e454 --- /dev/null +++ b/sys/contrib/ipfilter/netinet/ip_state.h @@ -0,0 +1,263 @@ +/* $FreeBSD$ */ + +/* + * Copyright (C) 1995-2001 by Darren Reed. + * + * See the IPFILTER.LICENCE file for details on licencing. + * + * @(#)ip_state.h 1.3 1/12/96 (C) 1995 Darren Reed + * $FreeBSD$ + * Id: ip_state.h,v 2.68.2.3 2005/03/03 14:24:11 darrenr Exp + */ +#ifndef __IP_STATE_H__ +#define __IP_STATE_H__ + +#if defined(__STDC__) || defined(__GNUC__) || defined(_AIX51) +# define SIOCDELST _IOW('r', 61, struct ipfobj) +#else +# define SIOCDELST _IOW(r, 61, struct ipfobj) +#endif + +struct ipscan; + +#ifndef IPSTATE_SIZE +# define IPSTATE_SIZE 5737 +#endif +#ifndef IPSTATE_MAX +# define IPSTATE_MAX 4013 /* Maximum number of states held */ +#endif + +#define PAIRS(s1,d1,s2,d2) ((((s1) == (s2)) && ((d1) == (d2))) ||\ + (((s1) == (d2)) && ((d1) == (s2)))) +#define IPPAIR(s1,d1,s2,d2) PAIRS((s1).s_addr, (d1).s_addr, \ + (s2).s_addr, (d2).s_addr) + + +typedef struct ipstate { + ipfmutex_t is_lock; + struct ipstate *is_next; + struct ipstate **is_pnext; + struct ipstate *is_hnext; + struct ipstate **is_phnext; + struct ipstate **is_me; + void *is_ifp[4]; + void *is_sync; + frentry_t *is_rule; + struct ipftq *is_tqehead[2]; + struct ipscan *is_isc; + U_QUAD_T is_pkts[4]; + U_QUAD_T is_bytes[4]; + U_QUAD_T is_icmppkts[4]; + struct ipftqent is_sti; + u_int is_frage[2]; + int is_ref; /* reference count */ + int is_isninc[2]; + u_short is_sumd[2]; + i6addr_t is_src; + i6addr_t is_dst; + u_int is_pass; + u_char is_p; /* Protocol */ + u_char is_v; + u_32_t is_hv; + u_32_t is_tag; + u_32_t is_opt[2]; /* packet options set */ + u_32_t is_optmsk[2]; /* " " mask */ + u_short is_sec; /* security options set */ + u_short is_secmsk; /* " " mask */ + u_short is_auth; /* authentication options set */ + u_short is_authmsk; /* " " mask */ + union { + icmpinfo_t is_ics; + tcpinfo_t is_ts; + udpinfo_t is_us; + greinfo_t is_ug; + } is_ps; + u_32_t is_flags; + int is_flx[2][2]; + u_32_t is_rulen; /* rule number when created */ + u_32_t is_s0[2]; + u_short is_smsk[2]; + char is_group[FR_GROUPLEN]; + char is_sbuf[2][16]; + char is_ifname[4][LIFNAMSIZ]; +} ipstate_t; + +#define is_die is_sti.tqe_die +#define is_state is_sti.tqe_state +#define is_touched is_sti.tqe_touched +#define is_saddr is_src.in4.s_addr +#define is_daddr is_dst.in4.s_addr +#define is_icmp is_ps.is_ics +#define is_type is_icmp.ici_type +#define is_code is_icmp.ici_code +#define is_tcp is_ps.is_ts +#define is_udp is_ps.is_us +#define is_send is_tcp.ts_data[0].td_end +#define is_dend is_tcp.ts_data[1].td_end +#define is_maxswin is_tcp.ts_data[0].td_maxwin +#define is_maxdwin is_tcp.ts_data[1].td_maxwin +#define is_maxsend is_tcp.ts_data[0].td_maxend +#define is_maxdend is_tcp.ts_data[1].td_maxend +#define is_swinscale is_tcp.ts_data[0].td_winscale +#define is_dwinscale is_tcp.ts_data[1].td_winscale +#define is_swinflags is_tcp.ts_data[0].td_winflags +#define is_dwinflags is_tcp.ts_data[1].td_winflags +#define is_sport is_tcp.ts_sport +#define is_dport is_tcp.ts_dport +#define is_ifpin is_ifp[0] +#define is_ifpout is_ifp[2] +#define is_gre is_ps.is_ug +#define is_call is_gre.gs_call + +#define IS_WSPORT SI_W_SPORT /* 0x00100 */ +#define IS_WDPORT SI_W_DPORT /* 0x00200 */ +#define IS_WSADDR SI_W_SADDR /* 0x00400 */ +#define IS_WDADDR SI_W_DADDR /* 0x00800 */ +#define IS_NEWFR SI_NEWFR /* 0x01000 */ +#define IS_CLONE SI_CLONE /* 0x02000 */ +#define IS_CLONED SI_CLONED /* 0x04000 */ +#define IS_TCPFSM 0x10000 +#define IS_STRICT 0x20000 +#define IS_ISNSYN 0x40000 +#define IS_ISNACK 0x80000 +#define IS_STATESYNC 0x100000 +/* + * IS_SC flags are for scan-operations that need to be recognised in state. + */ +#define IS_SC_CLIENT 0x10000000 +#define IS_SC_SERVER 0x20000000 +#define IS_SC_MATCHC 0x40000000 +#define IS_SC_MATCHS 0x80000000 +#define IS_SC_MATCHALL (IS_SC_MATCHC|IS_SC_MATCHC) +#define IS_SC_ALL (IS_SC_MATCHC|IS_SC_MATCHC|IS_SC_CLIENT|IS_SC_SERVER) + +/* + * Flags that can be passed into fr_addstate + */ +#define IS_INHERITED 0x0fffff00 + +#define TH_OPENING (TH_SYN|TH_ACK) +/* + * is_flags: + * Bits 0 - 3 are use as a mask with the current packet's bits to check for + * whether it is short, tcp/udp, a fragment or the presence of IP options. + * Bits 4 - 7 are set from the initial packet and contain what the packet + * anded with bits 0-3 must match. + * Bits 8,9 are used to indicate wildcard source/destination port matching. + * Bits 10,11 are reserved for other wildcard flag compatibility. + * Bits 12,13 are for scaning. + */ + +typedef struct ipstate_save { + void *ips_next; + struct ipstate ips_is; + struct frentry ips_fr; +} ipstate_save_t; + +#define ips_rule ips_is.is_rule + + +typedef struct ipslog { + U_QUAD_T isl_pkts[4]; + U_QUAD_T isl_bytes[4]; + i6addr_t isl_src; + i6addr_t isl_dst; + u_32_t isl_tag; + u_short isl_type; + union { + u_short isl_filler[2]; + u_short isl_ports[2]; + u_short isl_icmp; + } isl_ps; + u_char isl_v; + u_char isl_p; + u_char isl_flags; + u_char isl_state[2]; + u_32_t isl_rulen; + char isl_group[FR_GROUPLEN]; +} ipslog_t; + +#define isl_sport isl_ps.isl_ports[0] +#define isl_dport isl_ps.isl_ports[1] +#define isl_itype isl_ps.isl_icmp + +#define ISL_NEW 0 +#define ISL_CLONE 1 +#define ISL_EXPIRE 0xffff +#define ISL_FLUSH 0xfffe +#define ISL_REMOVE 0xfffd +#define ISL_INTERMEDIATE 0xfffc +#define ISL_KILLED 0xfffb +#define ISL_ORPHAN 0xfffa +#define ISL_UNLOAD 0xfff9 + + +typedef struct ips_stat { + u_long iss_hits; + u_long iss_miss; + u_long iss_max; + u_long iss_maxref; + u_long iss_tcp; + u_long iss_udp; + u_long iss_icmp; + u_long iss_nomem; + u_long iss_expire; + u_long iss_fin; + u_long iss_active; + u_long iss_logged; + u_long iss_logfail; + u_long iss_inuse; + u_long iss_wild; + u_long iss_killed; + u_long iss_ticks; + u_long iss_bucketfull; + int iss_statesize; + int iss_statemax; + ipstate_t **iss_table; + ipstate_t *iss_list; + u_long *iss_bucketlen; + ipftq_t *iss_tcptab; +} ips_stat_t; + + +extern u_long fr_tcpidletimeout; +extern u_long fr_tcpclosewait; +extern u_long fr_tcplastack; +extern u_long fr_tcptimeout; +extern u_long fr_tcpclosed; +extern u_long fr_tcphalfclosed; +extern u_long fr_udptimeout; +extern u_long fr_udpacktimeout; +extern u_long fr_icmptimeout; +extern u_long fr_icmpacktimeout; +extern u_long fr_iptimeout; +extern int fr_statemax; +extern int fr_statesize; +extern int fr_state_lock; +extern int fr_state_maxbucket; +extern int fr_state_maxbucket_reset; +extern ipstate_t *ips_list; +extern ipftq_t *ips_utqe; +extern ipftq_t ips_tqtqb[IPF_TCP_NSTATES]; + +extern int fr_stateinit __P((void)); +extern ipstate_t *fr_addstate __P((fr_info_t *, ipstate_t **, u_int)); +extern frentry_t *fr_checkstate __P((struct fr_info *, u_32_t *)); +extern ipstate_t *fr_stlookup __P((fr_info_t *, tcphdr_t *, ipftq_t **)); +extern void fr_statesync __P((void *)); +extern void fr_timeoutstate __P((void)); +extern int fr_tcp_age __P((struct ipftqent *, struct fr_info *, + struct ipftq *, int)); +extern int fr_tcpinwindow __P((struct fr_info *, struct tcpdata *, + struct tcpdata *, tcphdr_t *, int)); +extern void fr_stateunload __P((void)); +extern void ipstate_log __P((struct ipstate *, u_int)); +extern int fr_state_ioctl __P((caddr_t, ioctlcmd_t, int, int, void *)); +extern void fr_stinsert __P((struct ipstate *, int)); +extern void fr_sttab_init __P((struct ipftq *)); +extern void fr_sttab_destroy __P((struct ipftq *)); +extern void fr_updatestate __P((fr_info_t *, ipstate_t *, ipftq_t *)); +extern void fr_statederef __P((ipstate_t **)); +extern void fr_setstatequeue __P((ipstate_t *, int)); + +#endif /* __IP_STATE_H__ */ |
