freebsd-dev/sys/netatm/spans/spans_cls.h
Poul-Henning Kamp 1820df7a2d Add new files for HARP3
Host ATM Research Platform (HARP), Network Computing Services, Inc.
This software was developed with the support of the Defense Advanced
Research Projects Agency (DARPA).
1998-09-15 08:23:17 +00:00

189 lines
5.2 KiB
C

/*
*
* ===================================
* HARP | Host ATM Research Platform
* ===================================
*
*
* This Host ATM Research Platform ("HARP") file (the "Software") is
* made available by Network Computing Services, Inc. ("NetworkCS")
* "AS IS". NetworkCS does not provide maintenance, improvements or
* support of any kind.
*
* NETWORKCS MAKES NO WARRANTIES OR REPRESENTATIONS, EXPRESS OR IMPLIED,
* INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS FOR A PARTICULAR PURPOSE, AS TO ANY ELEMENT OF THE
* SOFTWARE OR ANY SUPPORT PROVIDED IN CONNECTION WITH THIS SOFTWARE.
* In no event shall NetworkCS be responsible for any damages, including
* but not limited to consequential damages, arising from or relating to
* any use of the Software or related support.
*
* Copyright 1994-1998 Network Computing Services, Inc.
*
* Copies of this Software may be made, however, the above copyright
* notice must be reproduced on all copies.
*
* @(#) $Id: spans_cls.h,v 1.6 1998/05/18 19:11:17 mks Exp $
*
*/
/*
* SPANS Signalling Manager
* ---------------------------
*
* SPANS Connectionless Datagram Service (CLS) control blocks
*
*/
#ifndef _SPANS_SPANSCLS_H
#define _SPANS_SPANSCLS_H
/*
* Protocol constants
*/
#define SPANSARP_AGING (60 * ATM_HZ) /* ARP aging timer */
#define SPANSARP_RETRY (3 * ATM_HZ) /* ARP retry timer */
#define SPANSARP_MAXAGE 20 /* Max ARP entry age (minutes)*/
#define SPANSARP_HASHSIZ 19 /* Hash table size */
/*
* SPANS CLS protocol structure. There will be one such structure for
* each SPANS signalling instance.
*/
struct spanscls {
struct spanscls *cls_next; /* Next attached cls instance */
u_char cls_state; /* Protocol state (see below) */
struct spans *cls_spans; /* Spans signalling instance */
Atm_connection *cls_conn; /* Connection manager token */
struct ip_nif *cls_ipnif; /* IP network interface */
};
/*
* SPANS CLS Protocol States
*/
#define CLS_CLOSED 1 /* CLS PVC is closed */
#define CLS_OPEN 2 /* CLS PVC is open */
/*
* Structure for SPANS ARP mappings. Each of these structures will contain
* IP address to SPANS hardware address mappings. There will be one such
* structure for each IP address currently in use.
*/
struct spansarp {
struct arpmap sa_arpmap; /* Common entry header */
struct spanscls *sa_cls; /* Interface where we learned answer */
struct spansarp *sa_next; /* Hash chain */
struct spansarp *sa_rnext; /* Retry chain */
u_char sa_flags; /* Flags (see below) */
u_char sa_origin; /* Origin (see below) */
u_short sa_reftime; /* Entry reference time (minutes) */
struct ipvcc *sa_ivp; /* IP VCCs waiting for answer */
};
#define sa_dstip sa_arpmap.am_dstip
#define sa_dstatm sa_arpmap.am_dstatm
#define sa_dstatmsub sa_arpmap.am_dstatmsub
/*
* Entry Flags
*/
#define SAF_VALID ARPF_VALID /* Entry is valid */
#define SAF_REFRESH ARPF_REFRESH /* Entry has been refreshed */
#define SAF_LOCKED 0x04 /* Entry is locked */
/*
* Entry Origin
*/
#define SAO_PERM ARP_ORIG_PERM /* Entry is permanently installed */
#define SAO_LOOKUP 20 /* Learned via lookup */
/*
* SPANS CLS Packet Header
*/
struct spanscls_hdr {
/* IEEE 802.6 MAC header */
spans_addr ch_dst; /* Destination SPANS address */
spans_addr ch_src; /* Source SPANS address */
u_char ch_proto; /* */
u_char ch_extlen; /* */
u_short ch_bridging; /* */
/* LLC SNAP header */
u_char ch_dsap; /* Destination SAP */
u_char ch_ssap; /* Source SAP */
u_char ch_ctl; /* Control field */
u_char ch_oui[3]; /* Organizationally Unique Identifier */
u_short ch_pid; /* Protocol Identifier */
};
/*
* SPANS ARP Packet Format
*/
struct spansarp_hdr {
u_short ah_hrd; /* Hardware type (see below) */
u_short ah_pro; /* Protocol type */
u_char ah_hln; /* Length of hardware address */
u_char ah_pln; /* Length of protocol address */
u_short ah_op; /* Operation code (see below) */
spans_addr ah_sha; /* Source hardware address */
u_char ah_spa[4]; /* Source protocol address */
spans_addr ah_tha; /* Target hardware address */
u_char ah_tpa[4]; /* Target protocol address */
};
/*
* Hardware types
*/
#define ARP_SPANS 0x4040
/*
* Operation types
*/
#define ARP_REQUEST 1 /* SPANSARP request */
#define ARP_REPLY 2 /* SPANSARP response */
#define ARP_PACKET_LEN \
(sizeof(struct spanscls_hdr) + sizeof(struct spansarp_hdr))
#ifdef ATM_KERNEL
/*
* Macros for manipulating SPANS ARP tables and entries
*/
#define SPANSARP_HASH(ip) ((u_long)(ip) % SPANSARP_HASHSIZ)
#define SPANSARP_ADD(sa) \
{ \
struct spansarp **h; \
h = &spansarp_arptab[SPANSARP_HASH((sa)->sa_dstip.s_addr)]; \
LINK2TAIL((sa), struct spansarp, *h, sa_next); \
}
#define SPANSARP_DELETE(sa) \
{ \
struct spansarp **h; \
h = &spansarp_arptab[SPANSARP_HASH((sa)->sa_dstip.s_addr)]; \
UNLINK((sa), struct spansarp, *h, sa_next); \
}
#define SPANSARP_LOOKUP(ip, sa) \
{ \
for ((sa) = spansarp_arptab[SPANSARP_HASH(ip)]; \
(sa); (sa) = (sa)->sa_next) { \
if ((sa)->sa_dstip.s_addr == (ip)) \
break; \
} \
}
/*
* External variables
*/
extern struct spanscls *spanscls_head;
extern struct spanscls_hdr spanscls_hdr;
#endif /* ATM_KERNEL */
#endif /* _SPANS_SPANSCLS_H */