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author | darrenr <darrenr@FreeBSD.org> | 2000-05-24 02:55:58 +0000 |
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committer | darrenr <darrenr@FreeBSD.org> | 2000-05-24 02:55:58 +0000 |
commit | 555b5d352bf66de91310e86c17a4c889e3cf6d57 (patch) | |
tree | 843267cee6cc56a96a38be5409be12cbf6c409d7 /sys/netinet/ip_state.h | |
parent | 1951f11539dc9602c6a6ded0ed1b96c4d82df48d (diff) | |
download | FreeBSD-src-555b5d352bf66de91310e86c17a4c889e3cf6d57.zip FreeBSD-src-555b5d352bf66de91310e86c17a4c889e3cf6d57.tar.gz |
Import IP Filter 3.4.4 into the kernel
Diffstat (limited to 'sys/netinet/ip_state.h')
-rw-r--r-- | sys/netinet/ip_state.h | 116 |
1 files changed, 83 insertions, 33 deletions
diff --git a/sys/netinet/ip_state.h b/sys/netinet/ip_state.h index f2ae94b..01c26a0 100644 --- a/sys/netinet/ip_state.h +++ b/sys/netinet/ip_state.h @@ -1,16 +1,22 @@ /* - * Copyright (C) 1995-1997 by Darren Reed. + * Copyright (C) 1995-2000 by Darren Reed. * * Redistribution and use in source and binary forms are permitted * provided that this notice is preserved and due credit is given * to the original author and the contributors. * * @(#)ip_state.h 1.3 1/12/96 (C) 1995 Darren Reed - * $Id: ip_state.h,v 2.0.2.14.2.6 1998/05/24 05:18:04 darrenr Exp $ + * $Id: ip_state.h,v 2.13 2000/03/13 22:10:23 darrenr Exp $ */ #ifndef __IP_STATE_H__ #define __IP_STATE_H__ +#if defined(__STDC__) || defined(__GNUC__) +# define SIOCDELST _IOW('r', 61, struct ipstate *) +#else +# define SIOCDELST _IOW(r, 61, struct ipstate *) +#endif + #define IPSTATE_SIZE 257 #define IPSTATE_MAX 2048 /* Maximum number of states held */ @@ -31,68 +37,106 @@ typedef struct icmpstate { u_char ics_type; } icmpstate_t; +typedef struct tcpdata { + u_32_t td_end; + u_32_t td_maxend; + u_short td_maxwin; +} tcpdata_t; + typedef struct tcpstate { u_short ts_sport; u_short ts_dport; - u_long ts_seq; - u_long ts_ack; - u_short ts_swin; - u_short ts_dwin; + tcpdata_t ts_data[2]; u_char ts_state[2]; } tcpstate_t; typedef struct ipstate { struct ipstate *is_next; + struct ipstate **is_pnext; + struct ipstate *is_hnext; + struct ipstate **is_phnext; u_long is_age; u_int is_pass; U_QUAD_T is_pkts; U_QUAD_T is_bytes; - void *is_ifpin; - void *is_ifpout; - struct in_addr is_src; - struct in_addr is_dst; - u_char is_p; - u_char is_flags; - u_32_t is_opt; - u_32_t is_optmsk; - u_short is_sec; - u_short is_secmsk; - u_short is_auth; - u_short is_authmsk; + void *is_ifp[2]; + frentry_t *is_rule; + union i6addr is_src; + union i6addr is_dst; + u_char is_p; /* Protocol */ + u_char is_v; + u_int is_hv; + u_32_t is_flags; + u_32_t is_opt; /* packet options set */ + u_32_t is_optmsk; /* " " 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 { icmpstate_t is_ics; tcpstate_t is_ts; udpstate_t is_us; } is_ps; + char is_ifname[2][IFNAMSIZ]; +#if SOLARIS || defined(__sgi) + kmutex_t is_lock; +#endif } ipstate_t; -#define is_icmp is_ps.is_ics -#define is_tcp is_ps.is_ts -#define is_udp is_ps.is_us -#define is_seq is_tcp.ts_seq -#define is_ack is_tcp.ts_ack -#define is_dwin is_tcp.ts_dwin -#define is_swin is_tcp.ts_swin +#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.ics_type +#define is_code is_icmp.ics_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_sport is_tcp.ts_sport #define is_dport is_tcp.ts_dport #define is_state is_tcp.ts_state +#define is_ifpin is_ifp[0] +#define is_ifpout is_ifp[1] #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. + */ + +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; U_QUAD_T isl_bytes; - struct in_addr isl_src; - struct in_addr isl_dst; - u_char isl_p; - u_char isl_flags; + union i6addr isl_src; + union i6addr isl_dst; 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]; } ipslog_t; #define isl_sport isl_ps.isl_ports[0] @@ -102,6 +146,7 @@ typedef struct ipslog { #define ISL_NEW 0 #define ISL_EXPIRE 0xffff #define ISL_FLUSH 0xfffe +#define ISL_REMOVE 0xfffd typedef struct ips_stat { @@ -117,7 +162,9 @@ typedef struct ips_stat { u_long iss_active; u_long iss_logged; u_long iss_logfail; + u_long iss_inuse; ipstate_t **iss_table; + ipstate_t *iss_list; } ips_stat_t; @@ -128,13 +175,16 @@ extern u_long fr_tcptimeout; extern u_long fr_tcpclosed; extern u_long fr_udptimeout; extern u_long fr_icmptimeout; +extern int fr_state_lock; +extern int fr_stateinit __P((void)); extern int fr_tcpstate __P((ipstate_t *, fr_info_t *, ip_t *, tcphdr_t *)); -extern int fr_addstate __P((ip_t *, fr_info_t *, u_int)); -extern int fr_checkstate __P((ip_t *, fr_info_t *)); +extern ipstate_t *fr_addstate __P((ip_t *, fr_info_t *, u_int)); +extern frentry_t *fr_checkstate __P((ip_t *, fr_info_t *)); +extern void ip_statesync __P((void *)); extern void fr_timeoutstate __P((void)); -extern void fr_tcp_age __P((u_long *, u_char *, ip_t *, fr_info_t *, int)); +extern void fr_tcp_age __P((u_long *, u_char *, fr_info_t *, int)); extern void fr_stateunload __P((void)); -extern void ipstate_log __P((struct ipstate *, u_short)); +extern void ipstate_log __P((struct ipstate *, u_int)); #if defined(__NetBSD__) || defined(__OpenBSD__) extern int fr_state_ioctl __P((caddr_t, u_long, int)); #else |