diff options
Diffstat (limited to 'newlib/libc/sys/linux/include/netinet/ip_fw.h')
| -rw-r--r-- | newlib/libc/sys/linux/include/netinet/ip_fw.h | 350 |
1 files changed, 0 insertions, 350 deletions
diff --git a/newlib/libc/sys/linux/include/netinet/ip_fw.h b/newlib/libc/sys/linux/include/netinet/ip_fw.h deleted file mode 100644 index 3c2b1c743..000000000 --- a/newlib/libc/sys/linux/include/netinet/ip_fw.h +++ /dev/null @@ -1,350 +0,0 @@ -/* - * Copyright (c) 1993 Daniel Boulet - * Copyright (c) 1994 Ugen J.S.Antsilevich - * - * Redistribution and use in source forms, with and without modification, - * are permitted provided that this entire comment appears intact. - * - * Redistribution in binary form may occur without any restrictions. - * Obviously, it would be nice if you gave credit where credit is due - * but requiring it would be too onerous. - * - * This software is provided ``AS IS'' without any warranties of any kind. - * - * $FreeBSD: src/sys/netinet/ip_fw.h,v 1.66 2002/05/09 10:34:57 luigi Exp $ - */ - -#ifndef _IP_FW_H -#define _IP_FW_H - -#include <sys/queue.h> - -/* - * This union structure identifies an interface, either explicitly - * by name or implicitly by IP address. The flags IP_FW_F_IIFNAME - * and IP_FW_F_OIFNAME say how to interpret this structure. An - * interface unit number of -1 matches any unit number, while an - * IP address of 0.0.0.0 indicates matches any interface. - * - * The receive and transmit interfaces are only compared against the - * the packet if the corresponding bit (IP_FW_F_IIFACE or IP_FW_F_OIFACE) - * is set. Note some packets lack a receive or transmit interface - * (in which case the missing "interface" never matches). - */ - -union ip_fw_if { - struct in_addr fu_via_ip; /* Specified by IP address */ - struct { /* Specified by interface name */ -#define FW_IFNLEN 10 /* need room ! was IFNAMSIZ */ - char name[FW_IFNLEN]; - short unit; /* -1 means match any unit */ - } fu_via_if; -}; - -/* - * Format of an IP firewall descriptor - * - * fw_src, fw_dst, fw_smsk, fw_dmsk are always stored in network byte order. - * fw_flg and fw_n*p are stored in host byte order (of course). - * Port numbers are stored in HOST byte order. - */ - -/* - * To match MAC headers: - * 12 bytes at fw_mac_hdr contain the dst-src MAC address after masking. - * 12 bytes at fw_mac_mask contain the mask to apply to dst-src - * 2 bytes at fw_mac_type contain the mac type after mask (in net format) - * 2 bytes at fw_mac_type_mask contain the mac type mask - * If IP_FW_F_SRNG, the two contain the low-high of a range of types. - * IP_FW_F_DRNG is used to indicare we want to match a vlan. - */ -#define fw_mac_hdr fw_src -#define fw_mac_mask fw_uar -#define fw_mac_type fw_iplen -#define fw_mac_mask_type fw_ipid - -struct ip_fw { - LIST_ENTRY(ip_fw) next; /* bidirectional list of rules */ - u_int fw_flg; /* Operational Flags word */ - u_int64_t fw_pcnt; /* Packet counters */ - u_int64_t fw_bcnt; /* Byte counters */ - - struct in_addr fw_src; /* Source IP address */ - struct in_addr fw_dst; /* Destination IP address */ - struct in_addr fw_smsk; /* Mask for source IP address */ - struct in_addr fw_dmsk; /* Mask for destination address */ - u_short fw_number; /* Rule number */ - u_char fw_prot; /* IP protocol */ -#if 1 - u_char fw_nports; /* # of src/dst port in array */ -#define IP_FW_GETNSRCP(rule) ((rule)->fw_nports & 0x0f) -#define IP_FW_SETNSRCP(rule, n) do { \ - (rule)->fw_nports &= ~0x0f; \ - (rule)->fw_nports |= (n); \ - } while (0) -#define IP_FW_GETNDSTP(rule) ((rule)->fw_nports >> 4) -#define IP_FW_SETNDSTP(rule, n) do { \ - (rule)->fw_nports &= ~0xf0; \ - (rule)->fw_nports |= (n) << 4;\ - } while (0) -#define IP_FW_HAVEPORTS(rule) ((rule)->fw_nports != 0) -#else - u_char __pad[1]; - u_int _nsrcp; - u_int _ndstp; -#define IP_FW_GETNSRCP(rule) (rule)->_nsrcp -#define IP_FW_SETNSRCP(rule,n) (rule)->_nsrcp = n -#define IP_FW_GETNDSTP(rule) (rule)->_ndstp -#define IP_FW_SETNDSTP(rule,n) (rule)->_ndstp = n -#define IP_FW_HAVEPORTS(rule) ((rule)->_ndstp + (rule)->_nsrcp != 0) -#endif -#define IP_FW_MAX_PORTS 10 /* A reasonable maximum */ - union { - u_short fw_pts[IP_FW_MAX_PORTS]; /* port numbers to match */ -#define IP_FW_ICMPTYPES_MAX 128 -#define IP_FW_ICMPTYPES_DIM (IP_FW_ICMPTYPES_MAX / (sizeof(unsigned) * 8)) - unsigned fw_icmptypes[IP_FW_ICMPTYPES_DIM]; /*ICMP types bitmap*/ - } fw_uar; - - u_int fw_ipflg; /* IP flags word */ - u_short fw_iplen; /* IP length */ - u_short fw_ipid; /* Identification */ - u_char fw_ipopt; /* IP options set */ - u_char fw_ipnopt; /* IP options unset */ - u_char fw_iptos; /* IP type of service set */ - u_char fw_ipntos; /* IP type of service unset */ - u_char fw_ipttl; /* IP time to live */ - u_int fw_ipver:4; /* IP version */ - u_char fw_tcpopt; /* TCP options set */ - u_char fw_tcpnopt; /* TCP options unset */ - u_char fw_tcpf; /* TCP flags set */ - u_char fw_tcpnf; /* TCP flags unset */ - u_short fw_tcpwin; /* TCP window size */ - u_int32_t fw_tcpseq; /* TCP sequence */ - u_int32_t fw_tcpack; /* TCP acknowledgement */ - long timestamp; /* timestamp (tv_sec) of last match */ - union ip_fw_if fw_in_if; /* Incoming interfaces */ - union ip_fw_if fw_out_if; /* Outgoing interfaces */ - union { - u_short fu_divert_port; /* Divert/tee port (options IPDIVERT) */ - u_short fu_pipe_nr; /* queue number (option DUMMYNET) */ - u_short fu_skipto_rule; /* SKIPTO command rule number */ - u_short fu_reject_code; /* REJECT response code */ - struct sockaddr_in fu_fwd_ip; - } fw_un; - void *pipe_ptr; /* flow_set ptr for dummynet pipe */ - void *next_rule_ptr; /* next rule in case of match */ - uid_t fw_uid; /* uid to match */ - gid_t fw_gid; /* gid to match */ - int fw_logamount; /* amount to log */ - u_int64_t fw_loghighest; /* highest number packet to log */ - - long dont_match_prob; /* 0x7fffffff means 1.0, always fail */ - u_char dyn_type; /* type for dynamic rule */ - -#define DYN_KEEP_STATE 0 /* type for keep-state rules */ -#define DYN_LIMIT 1 /* type for limit connection rules */ -#define DYN_LIMIT_PARENT 2 /* parent entry for limit connection rules */ - - /* following two fields are used to limit number of connections - * basing on either src, srcport, dst, dstport. - */ - u_char limit_mask; /* mask type for limit rule, can - * have many. - */ -#define DYN_SRC_ADDR 0x1 -#define DYN_SRC_PORT 0x2 -#define DYN_DST_ADDR 0x4 -#define DYN_DST_PORT 0x8 - - u_short conn_limit; /* # of connections for limit rule */ -}; - -#define fw_divert_port fw_un.fu_divert_port -#define fw_skipto_rule fw_un.fu_skipto_rule -#define fw_reject_code fw_un.fu_reject_code -#define fw_pipe_nr fw_un.fu_pipe_nr -#define fw_fwd_ip fw_un.fu_fwd_ip - -/* - * - * rule_ptr -------------+ - * V - * [ next.le_next ]---->[ next.le_next ]---- [ next.le_next ]---> - * [ next.le_prev ]<----[ next.le_prev ]<----[ next.le_prev ]<--- - * [ <ip_fw> body ] [ <ip_fw> body ] [ <ip_fw> body ] - * - */ - -/* - * Flow mask/flow id for each queue. - */ -struct ipfw_flow_id { - u_int32_t dst_ip; - u_int32_t src_ip; - u_int16_t dst_port; - u_int16_t src_port; - u_int8_t proto; - u_int8_t flags; /* protocol-specific flags */ -}; - -/* - * dynamic ipfw rule - */ -struct ipfw_dyn_rule { - struct ipfw_dyn_rule *next; - struct ipfw_flow_id id; /* (masked) flow id */ - struct ip_fw *rule; /* pointer to rule */ - struct ipfw_dyn_rule *parent; /* pointer to parent rule */ - u_int32_t expire; /* expire time */ - u_int64_t pcnt; /* packet match counters */ - u_int64_t bcnt; /* byte match counters */ - u_int32_t bucket; /* which bucket in hash table */ - u_int32_t state; /* state of this rule (typically a - * combination of TCP flags) - */ - u_int16_t dyn_type; /* rule type */ - u_int16_t count; /* refcount */ -}; - -/* - * Values for "flags" field . - */ -#define IP_FW_F_COMMAND 0x000000ff /* Mask for type of chain entry: */ -#define IP_FW_F_DENY 0x00000000 /* This is a deny rule */ -#define IP_FW_F_REJECT 0x00000001 /* Deny and send a response packet */ -#define IP_FW_F_ACCEPT 0x00000002 /* This is an accept rule */ -#define IP_FW_F_COUNT 0x00000003 /* This is a count rule */ -#define IP_FW_F_DIVERT 0x00000004 /* This is a divert rule */ -#define IP_FW_F_TEE 0x00000005 /* This is a tee rule */ -#define IP_FW_F_SKIPTO 0x00000006 /* This is a skipto rule */ -#define IP_FW_F_FWD 0x00000007 /* This is a "change forwarding - * address" rule - */ -#define IP_FW_F_PIPE 0x00000008 /* This is a dummynet rule */ -#define IP_FW_F_QUEUE 0x00000009 /* This is a dummynet queue */ - -#define IP_FW_F_IN 0x00000100 /* Check inbound packets */ -#define IP_FW_F_OUT 0x00000200 /* Check outbound packets */ -#define IP_FW_F_IIFACE 0x00000400 /* Apply inbound interface test */ -#define IP_FW_F_OIFACE 0x00000800 /* Apply outbound interface test */ -#define IP_FW_F_PRN 0x00001000 /* Print if this rule matches */ -#define IP_FW_F_SRNG 0x00002000 /* The first two src ports are a min - * and max range (stored in host byte - * order). - */ -#define IP_FW_F_DRNG 0x00004000 /* The first two dst ports are a min - * and max range (stored in host byte - * order). - */ -#define IP_FW_F_FRAG 0x00008000 /* Fragment */ -#define IP_FW_F_IIFNAME 0x00010000 /* In interface by name/unit (not IP) */ -#define IP_FW_F_OIFNAME 0x00020000 /* Out interface by name/unit (not IP)*/ -#define IP_FW_F_INVSRC 0x00040000 /* Invert sense of src check */ -#define IP_FW_F_INVDST 0x00080000 /* Invert sense of dst check */ -#define IP_FW_F_ICMPBIT 0x00100000 /* ICMP type bitmap is valid */ -#define IP_FW_F_UID 0x00200000 /* filter by uid */ -#define IP_FW_F_GID 0x00400000 /* filter by gid */ -#define IP_FW_F_RND_MATCH 0x00800000 /* probabilistic rule match */ -#define IP_FW_F_SMSK 0x01000000 /* src-port + mask */ -#define IP_FW_F_DMSK 0x02000000 /* dst-port + mask */ -#define IP_FW_BRIDGED 0x04000000 /* only match bridged packets */ -#define IP_FW_F_KEEP_S 0x08000000 /* keep state */ -#define IP_FW_F_CHECK_S 0x10000000 /* check state */ -#define IP_FW_F_SME 0x20000000 /* source = me */ -#define IP_FW_F_DME 0x40000000 /* destination = me */ -#define IP_FW_F_MAC 0x80000000 /* match MAC header */ - -#define IP_FW_F_MASK 0xFFFFFFFF /* All possible flag bits mask */ - -/* - * Flags for the 'fw_ipflg' field, for comparing values - * of ip and its protocols. - */ -#define IP_FW_IF_TCPOPT 0x00000001 /* tcp options */ -#define IP_FW_IF_TCPFLG 0x00000002 /* tcp flags */ -#define IP_FW_IF_TCPSEQ 0x00000004 /* tcp sequence number */ -#define IP_FW_IF_TCPACK 0x00000008 /* tcp acknowledgement number */ -#define IP_FW_IF_TCPWIN 0x00000010 /* tcp window size */ -#define IP_FW_IF_TCPEST 0x00000020 /* established TCP connection */ -#define IP_FW_IF_TCPMSK 0x0000003f /* mask of all tcp values */ -#define IP_FW_IF_IPOPT 0x00000100 /* ip options */ -#define IP_FW_IF_IPLEN 0x00000200 /* ip length */ -#define IP_FW_IF_IPID 0x00000400 /* ip identification */ -#define IP_FW_IF_IPTOS 0x00000800 /* ip type of service */ -#define IP_FW_IF_IPTTL 0x00001000 /* ip time to live */ -#define IP_FW_IF_IPVER 0x00002000 /* ip version */ -#define IP_FW_IF_IPPRE 0x00004000 /* ip precedence */ -#define IP_FW_IF_IPMSK 0x00007f00 /* mask of all ip values */ -#define IP_FW_IF_MSK 0x0000ffff /* All possible bits mask */ - -/* - * For backwards compatibility with rules specifying "via iface" but - * not restricted to only "in" or "out" packets, we define this combination - * of bits to represent this configuration. - */ - -#define IF_FW_F_VIAHACK (IP_FW_F_IN|IP_FW_F_OUT|IP_FW_F_IIFACE|IP_FW_F_OIFACE) - -/* - * Definitions for REJECT response codes. - * Values less than 256 correspond to ICMP unreachable codes. - */ -#define IP_FW_REJECT_RST 0x0100 /* TCP packets: send RST */ - -/* - * Definitions for IP option names. - */ -#define IP_FW_IPOPT_LSRR 0x01 -#define IP_FW_IPOPT_SSRR 0x02 -#define IP_FW_IPOPT_RR 0x04 -#define IP_FW_IPOPT_TS 0x08 - -/* - * Definitions for TCP option names. - */ -#define IP_FW_TCPOPT_MSS 0x01 -#define IP_FW_TCPOPT_WINDOW 0x02 -#define IP_FW_TCPOPT_SACK 0x04 -#define IP_FW_TCPOPT_TS 0x08 -#define IP_FW_TCPOPT_CC 0x10 - -/* - * Definitions for TCP flags. - */ -#define IP_FW_TCPF_FIN TH_FIN -#define IP_FW_TCPF_SYN TH_SYN -#define IP_FW_TCPF_RST TH_RST -#define IP_FW_TCPF_PSH TH_PUSH -#define IP_FW_TCPF_ACK TH_ACK -#define IP_FW_TCPF_URG TH_URG - -/* - * Main firewall chains definitions and global var's definitions. - */ -#ifdef _KERNEL - -#define IP_FW_PORT_DYNT_FLAG 0x10000 -#define IP_FW_PORT_TEE_FLAG 0x20000 -#define IP_FW_PORT_DENY_FLAG 0x40000 - -/* - * Function definitions. - */ -void ip_fw_init(void); - -/* Firewall hooks */ -struct ip; -struct sockopt; -typedef int ip_fw_chk_t (struct mbuf **m, struct ifnet *oif, - u_int16_t *cookie, struct ip_fw **rule, struct sockaddr_in **next_hop); -typedef int ip_fw_ctl_t (struct sockopt *); -extern ip_fw_chk_t *ip_fw_chk_ptr; -extern ip_fw_ctl_t *ip_fw_ctl_ptr; -extern int fw_one_pass; -extern int fw_enable; -extern struct ipfw_flow_id last_pkt; -#define IPFW_LOADED (ip_fw_chk_ptr != NULL) -#endif /* _KERNEL */ - -#endif /* _IP_FW_H */ |