diff options
Diffstat (limited to 'sys/netiso/clnp.h')
| -rw-r--r-- | sys/netiso/clnp.h | 340 |
1 files changed, 215 insertions, 125 deletions
diff --git a/sys/netiso/clnp.h b/sys/netiso/clnp.h index 4c7abbc1c14..c90f8f2c8a0 100644 --- a/sys/netiso/clnp.h +++ b/sys/netiso/clnp.h @@ -1,4 +1,5 @@ -/* $NetBSD: clnp.h,v 1.9 1995/06/13 07:13:14 mycroft Exp $ */ +/* $OpenBSD: clnp.h,v 1.2 1996/03/04 10:34:44 mickey Exp $ */ +/* $NetBSD: clnp.h,v 1.10 1996/02/13 22:08:09 christos Exp $ */ /*- * Copyright (c) 1991, 1993, 1994 @@ -40,13 +41,13 @@ All Rights Reserved -Permission to use, copy, modify, and distribute this software and its -documentation for any purpose and without fee is hereby granted, +Permission to use, copy, modify, and distribute this software and its +documentation for any purpose and without fee is hereby granted, provided that the above copyright notice appear in all copies and that -both that copyright notice and this permission notice appear in +both that copyright notice and this permission notice appear in supporting documentation, and that the name of IBM not be used in advertising or publicity pertaining to distribution of the -software without specific, written prior permission. +software without specific, written prior permission. IBM DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL @@ -93,16 +94,19 @@ SOFTWARE. * Fixed part of clnp header */ struct clnp_fixed { - u_char cnf_proto_id; /* network layer protocol identifier */ - u_char cnf_hdr_len; /* length indicator (octets) */ - u_char cnf_vers; /* version/protocol identifier extension */ - u_char cnf_ttl; /* lifetime (500 milliseconds) */ - u_char cnf_type; /* type code */ - /* Includes err_ok, more_segs, and seg_ok */ - u_char cnf_seglen_msb; /* pdu segment length (octets) high byte */ - u_char cnf_seglen_lsb; /* pdu segment length (octets) low byte */ - u_char cnf_cksum_msb; /* checksum high byte */ - u_char cnf_cksum_lsb; /* checksum low byte */ + u_char cnf_proto_id; /* network layer protocol identifier */ + u_char cnf_hdr_len; /* length indicator (octets) */ + u_char cnf_vers; /* version/protocol identifier + * extension */ + u_char cnf_ttl;/* lifetime (500 milliseconds) */ + u_char cnf_type; /* type code */ + /* Includes err_ok, more_segs, and seg_ok */ + u_char cnf_seglen_msb; /* pdu segment length (octets) high + * byte */ + u_char cnf_seglen_lsb; /* pdu segment length (octets) low + * byte */ + u_char cnf_cksum_msb; /* checksum high byte */ + u_char cnf_cksum_lsb; /* checksum low byte */ }; #define CNF_TYPE 0x1f #define CNF_ERR_OK 0x20 @@ -117,17 +121,17 @@ struct clnp_fixed { * Segmentation part of clnp header */ struct clnp_segment { - u_short cng_id; /* data unit identifier */ - u_short cng_off; /* segment offset */ - u_short cng_tot_len; /* total length */ + u_short cng_id; /* data unit identifier */ + u_short cng_off;/* segment offset */ + u_short cng_tot_len; /* total length */ }; /* * Clnp fragment reassembly structures: * - * All packets undergoing reassembly are linked together in + * All packets undergoing reassembly are linked together in * clnp_fragl structures. Each clnp_fragl structure contains a - * pointer to the original clnp packet header, as well as a + * pointer to the original clnp packet header, as well as a * list of packet fragments. Each packet fragment * is headed by a clnp_frag structure. This structure contains the * offset of the first and last byte of the fragment, as well as @@ -136,31 +140,31 @@ struct clnp_segment { /* * NOTE: - * The clnp_frag structure is stored in an mbuf immedately preceeding - * the fragment data. Since there are words in this struct, - * it must be word aligned. + * The clnp_frag structure is stored in an mbuf immedately + * preceeding the fragment data. Since there are words in + * this struct, it must be word aligned. * * NOTE: - * All the fragment code assumes that the entire clnp header is - * contained in the first mbuf. + * All the fragment code assumes that the entire clnp header is + * contained in the first mbuf. */ struct clnp_frag { - u_int cfr_first; /* offset of first byte of this frag */ - u_int cfr_last; /* offset of last byte of this frag */ - u_int cfr_bytes; /* bytes to shave to get to data */ - struct mbuf *cfr_data; /* ptr to data for this frag */ - struct clnp_frag *cfr_next; /* next fragment in list */ + u_int cfr_first; /* offset of first byte of this frag */ + u_int cfr_last; /* offset of last byte of this frag */ + u_int cfr_bytes; /* bytes to shave to get to data */ + struct mbuf *cfr_data; /* ptr to data for this frag */ + struct clnp_frag *cfr_next; /* next fragment in list */ }; struct clnp_fragl { - struct iso_addr cfl_src; /* source of the pkt */ - struct iso_addr cfl_dst; /* destination of the pkt */ - u_short cfl_id; /* id of the pkt */ - u_char cfl_ttl; /* current ttl of pkt */ - u_short cfl_last; /* offset of last byte of packet */ - struct mbuf *cfl_orighdr; /* ptr to original header */ - struct clnp_frag *cfl_frags; /* linked list of fragments for pkt */ - struct clnp_fragl *cfl_next; /* next pkt being reassembled */ + struct iso_addr cfl_src;/* source of the pkt */ + struct iso_addr cfl_dst;/* destination of the pkt */ + u_short cfl_id; /* id of the pkt */ + u_char cfl_ttl;/* current ttl of pkt */ + u_short cfl_last; /* offset of last byte of packet */ + struct mbuf *cfl_orighdr; /* ptr to original header */ + struct clnp_frag *cfl_frags; /* linked list of fragments for pkt */ + struct clnp_fragl *cfl_next; /* next pkt being reassembled */ }; /* @@ -175,53 +179,53 @@ struct clnp_fragl { * does not include the option code or option length fields. */ struct clnp_optidx { - u_short cni_securep; /* ptr to beginning of security option */ - char cni_secure_len; /* length of entire security option */ + u_short cni_securep; /* ptr to start of security option */ + char cni_secure_len; /* length of entire security option */ - u_short cni_srcrt_s; /* offset of start of src rt option */ - u_short cni_srcrt_len; /* length of entire src rt option */ + u_short cni_srcrt_s; /* offset of start of src rt option */ + u_short cni_srcrt_len; /* length of entire src rt option */ - u_short cni_recrtp; /* ptr to beginning of recrt option */ - char cni_recrt_len; /* length of entire recrt option */ + u_short cni_recrtp; /* ptr to beginning of recrt option */ + char cni_recrt_len; /* length of entire recrt option */ - char cni_priorp; /* ptr to priority option */ + char cni_priorp; /* ptr to priority option */ - u_short cni_qos_formatp; /* ptr to format of qos option */ - char cni_qos_len; /* length of entire qos option */ + u_short cni_qos_formatp; /* ptr to format of qos + * option */ + char cni_qos_len; /* length of entire qos option */ - u_char cni_er_reason; /* reason from ER pdu option */ + u_char cni_er_reason; /* reason from ER pdu option */ - /* ESIS options */ + /* ESIS options */ - u_short cni_esct; /* value from ISH ESCT option */ + u_short cni_esct; /* value from ISH ESCT option */ - u_short cni_netmaskp; /* ptr to beginning of netmask option */ - char cni_netmask_len; /* length of entire netmask option */ + u_short cni_netmaskp; /* ptr to beginning of netmask option */ + char cni_netmask_len; /* length of entire netmask + * option */ - u_short cni_snpamaskp; /* ptr to beginning of snpamask option */ - char cni_snpamask_len; /* length of entire snpamask option */ + u_short cni_snpamaskp; /* ptr to start of snpamask option */ + char cni_snpamask_len; /* length of entire snpamask + * option */ }; #define ER_INVALREAS 0xff /* code for invalid ER pdu discard reason */ /* given an mbuf and addr of option, return offset from data of mbuf */ -#define CLNP_OPTTOOFF(m, opt)\ - ((u_short) (opt - mtod(m, caddr_t))) +#define CLNP_OPTTOOFF(m, opt) ((u_short) (opt - mtod(m, caddr_t))) /* given an mbuf and offset of option, return address of option */ -#define CLNP_OFFTOOPT(m, off)\ - ((caddr_t) (mtod(m, caddr_t) + off)) +#define CLNP_OFFTOOPT(m, off) ((caddr_t) (mtod(m, caddr_t) + off)) -/* return true iff src route is valid */ -#define CLNPSRCRT_VALID(oidx)\ - ((oidx) && (oidx->cni_srcrt_s)) +/* return true iff src route is valid */ +#define CLNPSRCRT_VALID(oidx) ((oidx) && (oidx->cni_srcrt_s)) -/* return the offset field of the src rt */ +/* return the offset field of the src rt */ #define CLNPSRCRT_OFF(oidx, options)\ (*((u_char *)(CLNP_OFFTOOPT(options, oidx->cni_srcrt_s) + 1))) -/* return the type field of the src rt */ +/* return the type field of the src rt */ #define CLNPSRCRT_TYPE(oidx, options)\ ((u_char)(*(CLNP_OFFTOOPT(options, oidx->cni_srcrt_s)))) @@ -233,9 +237,9 @@ struct clnp_optidx { #define CLNPSRCRT_CADDR(oidx, options)\ ((caddr_t)(CLNP_OFFTOOPT(options, oidx->cni_srcrt_s) + CLNPSRCRT_OFF(oidx, options))) -/* - * return true if the src route has run out of routes - * this is true if the offset of next route is greater than the end of the rt +/* + * return true if the src route has run out of routes this is true if the + * offset of next route is greater than the end of the rt */ #define CLNPSRCRT_TERM(oidx, options)\ (CLNPSRCRT_OFF(oidx, options) > oidx->cni_srcrt_len) @@ -270,37 +274,38 @@ struct clnp_optidx { #define CLNPOVAL_COMPRT 0x01 /* complete source routing */ /* - * Clnp flags used in a control block flags field. + * Clnp flags used in a control block flags field. * NOTE: these must be out of the range of bits defined in ../net/raw_cb.h */ #define CLNP_NO_SEG 0x010 /* segmentation not permitted */ #define CLNP_NO_ER 0x020 /* do not generate ERs */ -#define CLNP_SEND_RAW 0x080 /* send pkt as RAW DT rather than TP DT */ -#define CLNP_NO_CKSUM 0x100 /* don't use clnp checksum */ +#define CLNP_SEND_RAW 0x080 /* send pkt as RAW DT not TP DT */ +#define CLNP_NO_CKSUM 0x100 /* don't use clnp checksum */ #define CLNP_ECHO 0x200 /* send echo request */ -#define CLNP_NOCACHE 0x400 /* don't store cache information */ +#define CLNP_NOCACHE 0x400 /* don't store cache information */ #define CLNP_ECHOR 0x800 /* send echo reply */ /* valid clnp flags */ -#define CLNP_VFLAGS (CLNP_SEND_RAW|CLNP_NO_SEG|CLNP_NO_ER|CLNP_NO_CKSUM\ - |CLNP_ECHO|CLNP_NOCACHE|CLNP_ECHOR) +#define CLNP_VFLAGS \ + (CLNP_SEND_RAW|CLNP_NO_SEG|CLNP_NO_ER|CLNP_NO_CKSUM|\ + CLNP_ECHO|CLNP_NOCACHE|CLNP_ECHOR) -/* - * Constants used by clnp +/* + * Constants used by clnp */ #define CLNP_HDR_MIN (sizeof (struct clnp_fixed)) #define CLNP_HDR_MAX (254) -#define CLNP_TTL_UNITS 2 /* 500 milliseconds */ -#define CLNP_TTL 15*CLNP_TTL_UNITS /* time to live (seconds) */ -#define ISO8473_V1 0x01 +#define CLNP_TTL_UNITS 2 /* 500 milliseconds */ +#define CLNP_TTL 15*CLNP_TTL_UNITS /* time to live (seconds) */ +#define ISO8473_V1 0x01 /* * Clnp packet types * In order to test raw clnp and tp/clnp simultaneously, a third type of * packet has been defined: CLNP_RAW. This is done so that the input * routine can switch to the correct input routine (rclnp_input or - * tpclnp_input) based on the type field. If clnp had a higher level protocol - * field, this would not be necessary. + * tpclnp_input) based on the type field. If clnp had a higher level + * protocol field, this would not be necessary. */ #define CLNP_DT 0x1C /* normal data */ #define CLNP_ER 0x01 /* error report */ @@ -311,14 +316,14 @@ struct clnp_optidx { /* * ER pdu error codes */ -#define GEN_NOREAS 0x00 /* reason not specified */ +#define GEN_NOREAS 0x00 /* reason not specified */ #define GEN_PROTOERR 0x01 /* protocol procedure error */ -#define GEN_BADCSUM 0x02 /* incorrect checksum */ -#define GEN_CONGEST 0x03 /* pdu discarded due to congestion */ +#define GEN_BADCSUM 0x02 /* incorrect checksum */ +#define GEN_CONGEST 0x03 /* pdu discarded due to congestion */ #define GEN_HDRSYNTAX 0x04 /* header syntax error */ -#define GEN_SEGNEEDED 0x05 /* segmentation needed, but not permitted */ +#define GEN_SEGNEEDED 0x05 /* need segmentation but not allowed */ #define GEN_INCOMPLETE 0x06 /* incomplete pdu received */ -#define GEN_DUPOPT 0x07 /* duplicate option */ +#define GEN_DUPOPT 0x07 /* duplicate option */ /* address errors */ #define ADDR_DESTUNREACH 0x80 /* destination address unreachable */ @@ -346,19 +351,16 @@ struct clnp_optidx { #define CLNP_ERRORS 22 -#ifdef _KERNEL -int clnp_er_index(); -#endif - #ifdef CLNP_ER_CODES -u_char clnp_er_codes[CLNP_ERRORS] = { -GEN_NOREAS, GEN_PROTOERR, GEN_BADCSUM, GEN_CONGEST, -GEN_HDRSYNTAX, GEN_SEGNEEDED, GEN_INCOMPLETE, GEN_DUPOPT, -ADDR_DESTUNREACH, ADDR_DESTUNKNOWN, -SRCRT_UNSPECERR, SRCRT_SYNTAX, SRCRT_UNKNOWNADDR, SRCRT_BADPATH, -TTL_EXPTRANSIT, TTL_EXPREASS, -DISC_UNSUPPOPT, DISC_UNSUPPVERS, DISC_UNSUPPSECURE, -DISC_UNSUPPSRCRT, DISC_UNSUPPRECRT, REASS_INTERFERE }; +u_char clnp_er_codes[CLNP_ERRORS] = { + GEN_NOREAS, GEN_PROTOERR, GEN_BADCSUM, GEN_CONGEST, + GEN_HDRSYNTAX, GEN_SEGNEEDED, GEN_INCOMPLETE, GEN_DUPOPT, + ADDR_DESTUNREACH, ADDR_DESTUNKNOWN, + SRCRT_UNSPECERR, SRCRT_SYNTAX, SRCRT_UNKNOWNADDR, SRCRT_BADPATH, + TTL_EXPTRANSIT, TTL_EXPREASS, + DISC_UNSUPPOPT, DISC_UNSUPPVERS, DISC_UNSUPPSECURE, + DISC_UNSUPPSRCRT, DISC_UNSUPPRECRT, REASS_INTERFERE +}; #endif #ifdef TROLL @@ -370,15 +372,17 @@ DISC_UNSUPPSRCRT, DISC_UNSUPPRECRT, REASS_INTERFERE }; #define TR_CHANGE 0x10 /* change bytes in packet */ #define TR_MTU 0x20 /* delta to change device mtu */ #define TR_CHUCK 0x40 /* drop packet in rclnp_input */ -#define TR_BLAST 0x80 /* force rclnp_output to blast many packet */ -#define TR_RAWLOOP 0x100 /* make if_loop call clnpintr directly */ +#define TR_BLAST 0x80 /* force rclnp_output to blast many + * packet */ +#define TR_RAWLOOP 0x100 /* make if_loop call clnpintr + * directly */ struct troll { - int tr_ops; /* operations to perform */ - float tr_dup_size; /* % to duplicate */ - float tr_dup_freq; /* frequency to duplicate packets */ - float tr_drop_freq; /* frequence to drop packets */ - int tr_mtu_adj; /* delta to adjust if mtu */ - int tr_blast_cnt; /* # of pkts to blast out */ + int tr_ops; /* operations to perform */ + float tr_dup_size; /* % to duplicate */ + float tr_dup_freq; /* frequency to duplicate packets */ + float tr_drop_freq; /* frequence to drop packets */ + int tr_mtu_adj; /* delta to adjust if mtu */ + int tr_blast_cnt; /* # of pkts to blast out */ }; #define SN_OUTPUT(clcp, m)\ @@ -389,18 +393,19 @@ struct troll { - trollctl.tr_mtu_adj) #ifdef _KERNEL -extern float troll_random; +extern float troll_random; #endif -#else /* NO TROLL */ +#else /* NO TROLL */ #define SN_OUTPUT(clcp, m)\ - (*clcp->clc_ifp->if_output)(clcp->clc_ifp, m, clcp->clc_firsthop, clcp->clc_rt) + (*clcp->clc_ifp->if_output)(clcp->clc_ifp, m, clcp->clc_firsthop, \ + clcp->clc_rt) #define SN_MTU(ifp, rt) (((rt && rt->rt_rmx.rmx_mtu) ?\ rt->rt_rmx.rmx_mtu : clnp_badmtu(ifp, rt, __LINE__, __FILE__))) -#endif /* TROLL */ +#endif /* TROLL */ /* * Macro to remove an address from a clnp header @@ -412,7 +417,8 @@ extern float troll_random; (isoa.isoa_len > 20) || (isoa.isoa_len == 0)) {\ hoff = (caddr_t)0;\ } else {\ - (void) bcopy(hoff, (caddr_t)isoa.isoa_genaddr, isoa.isoa_len);\ + (void) bcopy(hoff, (caddr_t)isoa.isoa_genaddr, \ + isoa.isoa_len);\ hoff += isoa.isoa_len;\ }\ } @@ -434,25 +440,109 @@ extern float troll_random; */ struct clnp_cache { /* these fields are used to check the validity of the cache */ - struct iso_addr clc_dst; /* destination of packet */ - struct mbuf *clc_options; /* ptr to options mbuf */ - int clc_flags; /* flags passed to clnp_output */ + struct iso_addr clc_dst;/* destination of packet */ + struct mbuf *clc_options; /* ptr to options mbuf */ + int clc_flags; /* flags passed to clnp_output */ /* these fields are state that clnp_output requires to finish the pkt */ - int clc_segoff; /* offset of seg part of header */ - struct rtentry *clc_rt; /* ptr to rtentry (points into - the route structure) */ - struct sockaddr *clc_firsthop; /* first hop of packet */ - struct ifnet *clc_ifp; /* ptr to interface structure */ - struct iso_ifaddr *clc_ifa; /* ptr to interface address */ - struct mbuf *clc_hdr; /* cached pkt hdr (finally)! */ + int clc_segoff; /* offset of seg part of header */ + struct rtentry *clc_rt; /* ptr to rtentry (points into the route + * structure) */ + struct sockaddr *clc_firsthop; /* first hop of packet */ + struct ifnet *clc_ifp;/* ptr to interface structure */ + struct iso_ifaddr + *clc_ifa;/* ptr to interface address */ + struct mbuf *clc_hdr;/* cached pkt hdr (finally)! */ }; #ifdef _KERNEL -caddr_t clnp_insert_addr(); -struct iso_addr *clnp_srcaddr(); -struct mbuf *clnp_reass(); +struct iso_addr; +struct sockaddr_iso; +struct mbuf; +struct clnp_segment; +struct sockaddr; +struct rt_entry; +struct clnp_fragl; +struct clnp_optidx; +struct isopcb; +struct snpa_hdr; +struct iso_ifaddr; +struct route_iso; + +/* clnp_debug.c */ +char *clnp_hexp __P((char *, int, char *)); +char *clnp_iso_addrp __P((struct iso_addr *)); +char *clnp_saddr_isop __P((struct sockaddr_iso *)); + +/* clnp_er.c */ +void clnp_er_input __P((struct mbuf *, struct iso_addr *, u_int)); +void clnp_discard __P((struct mbuf *, u_int)); +void clnp_emit_er __P((struct mbuf *, u_int)); +int clnp_er_index __P((u_int)); + +int clnp_fragment __P((struct ifnet *, struct mbuf *, struct sockaddr *, + int, int, int, struct rtentry *)); +struct mbuf *clnp_reass __P((struct mbuf *, struct iso_addr *, + struct iso_addr *, struct clnp_segment *)); +int clnp_newpkt __P((struct mbuf *, struct iso_addr *, struct iso_addr *, + struct clnp_segment *)); +void clnp_insert_frag __P((struct clnp_fragl *, struct mbuf *, + struct clnp_segment *)); +struct mbuf *clnp_comp_pdu __P((struct clnp_fragl *)); +#ifdef TROLL +float troll_random __P((void)); +int troll_output __P((struct ifnet *, struct mbuf *, struct sockaddr *, + struct rtentry *)); +#endif + +/* clnp_input.c */ +void clnp_init __P((void)); +void clnlintr __P((void)); +void clnp_input __P((struct mbuf *, ...)); + +/* clnp_options.c */ +void clnp_update_srcrt __P((struct mbuf *, struct clnp_optidx *)); +void clnp_dooptions __P((struct mbuf *, struct clnp_optidx *, struct ifnet *, + struct iso_addr *)); +int clnp_set_opts __P((struct mbuf **, struct mbuf **)); +int clnp_opt_sanity __P((struct mbuf *, caddr_t, int, struct clnp_optidx *)); + +/* clnp_output.c */ +int clnp_output __P((struct mbuf *, ...)); +void clnp_ctloutput __P((void)); + +/* clnp_raw.c */ +void rclnp_input __P((struct mbuf *, ...)); +int rclnp_output __P((struct mbuf *, ...)); +int rclnp_ctloutput __P((int, struct socket *, int, int, struct mbuf **)); +int clnp_usrreq __P((struct socket *, int, struct mbuf *, struct mbuf *, + struct mbuf *)); + +/* clnp_subr.c */ +struct mbuf *clnp_data_ck __P((struct mbuf *, int)); +caddr_t clnp_extract_addr __P((caddr_t, int, struct iso_addr *, + struct iso_addr *)); +int clnp_ours __P((struct iso_addr *)); +void clnp_forward __P((struct mbuf *, int, struct iso_addr *, + struct clnp_optidx *, int, struct snpa_hdr *)); +caddr_t clnp_insert_addr __P((caddr_t, struct iso_addr *, struct iso_addr *)); +int clnp_route __P((struct iso_addr *, struct route_iso *, int, + struct sockaddr **, struct iso_ifaddr **)); +int clnp_srcroute __P((struct mbuf *, struct clnp_optidx *, struct route_iso *, + struct sockaddr **, struct iso_ifaddr **, + struct iso_addr *)); +int clnp_echoreply __P((struct mbuf *, int, struct sockaddr_iso *, + struct sockaddr_iso *, struct clnp_optidx *)); +int clnp_badmtu __P((struct ifnet *, struct rtentry *, int, char *)); +void clnp_ypocb __P((caddr_t, caddr_t, u_int)); + +/* clnp_timer.c */ +struct clnp_fragl *clnp_freefrags __P((struct clnp_fragl *)); +void clnp_slowtimo __P((void)); +void clnp_drain __P((void)); + #ifdef TROLL -struct troll trollctl; -#endif /* TROLL */ -#endif /* _KERNEL */ +struct troll trollctl; +#endif /* TROLL */ + +#endif /* _KERNEL */ |