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1.1 root 1: /*
2: * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
3: *
4: * @APPLE_LICENSE_HEADER_START@
5: *
6: * The contents of this file constitute Original Code as defined in and
7: * are subject to the Apple Public Source License Version 1.1 (the
8: * "License"). You may not use this file except in compliance with the
9: * License. Please obtain a copy of the License at
10: * http://www.apple.com/publicsource and read it before using this file.
11: *
12: * This Original Code and all software distributed under the License are
13: * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
14: * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
15: * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
16: * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
17: * License for the specific language governing rights and limitations
18: * under the License.
19: *
20: * @APPLE_LICENSE_HEADER_END@
21: */
22: /*
23: * This include file defines the RTMP table and ZIP table
24: * for the AppleTalk AIX router
25: *
26: *
27: * 0.01 03/16/94 LD Creation
28: * 0.10 08/19/94 LD merged
29: *
30: */
31:
32: #ifndef _NETAT_ROUTING_TABLES_H_
33: #define _NETAT_ROUTING_TABLES_H_
34:
35: #define DDP_MAX_DATA 586 /* should probably be somewhere else... */
36:
37: /* RTMP table entry state bitmap (EntryState) values */
38:
39: #define RTE_STATE_UNUSED 0 /* this entry is not in used */
40: #define RTE_STATE_BAD 2 /* The route is almost ready to be removed */
41: #define RTE_STATE_SUSPECT 4 /* didn't received an update for route */
42: #define RTE_STATE_GOOD 8 /* this route is 100% valid */
43: #define RTE_STATE_ZKNOWN 16 /* we know the zones for this entry */
44: #define RTE_STATE_UPDATED 32 /* set when updated from received rtmp table */
45: #define RTE_STATE_BKUP 64 /* for future use : AURP */
46: #define RTE_STATE_PERMANENT 128 /* This is a directly attached route */
47:
48: #define PORT_ONLINE 32 /* router port in forwarding state */
49: #define PORT_SEEDING 31 /* router port seeding */
50: #define PORT_ACTIVATING 16 /* router port waiting for net infos */
51: #define PORT_ERR_NOZONE 6 /* router no zones for non seed port*/
52: #define PORT_ERR_BADRTMP 5 /* router problem bad rtmp version*/
53: #define PORT_ERR_STARTUP 4 /* router problem cable in start range*/
54: #define PORT_ERR_CABLER 3 /* router problem bad cable range*/
55: #define PORT_ERR_SEED 2 /* router startup seeding problem */
56: #define PORT_ONERROR 1 /* router port with generic problem*/
57: #define PORT_OFFLINE 0 /* router port disabled/not ready */
58:
59: #define ZT_MAX 1024 /* Don't allow more zones than that */
60: #define ZT_MIN 32 /* Minimum for a good behaviour*/
61: #define ZT_DEFAULT 512 /* Minimum for a good behaviour*/
62: #define RT_MAX 4096 /* Don't allow more entries than that */
63: #define RT_MIN 128 /* Minimum for a good behaviour*/
64: #define RT_DEFAULT 1024 /* Minimum for a good behaviour*/
65: #define ZT_BYTES (ZT_MAX/8) /* Bytes in Zone Bitmap */
66: #define ZT_MAXEDOUT ZT_MAX+1 /* reached the entry limit.. */
67: #define RT_MIX_DEFAULT 2000 /* default for nbr of ppsec */
68:
69:
70: #define NOTIFY_N_DIST 31 /* Notify Neighbor distance (when shutdown or so) */
71:
72: /* Useful macros to access the RTMP tuple fields */
73:
74: #define TUPLENET(x) NET_VALUE(((at_rtmp_tuple *)(x))->at_rtmp_net)
75: #define TUPLEDIST(x) ((((at_rtmp_tuple *)(x))->at_rtmp_data) & RTMP_DISTANCE)
76: #define TUPLERANGE(x) ((((at_rtmp_tuple *)(x))->at_rtmp_data) & RTMP_RANGE_FLAG)
77:
78: #define CableStart ifID->ifThisCableStart
79: #define CableStop ifID->ifThisCableEnd
80:
81: #define RTMP_IDLENGTH 4 /* RTMP packet Node header length */
82:
83:
84: #define RTMP_VERSION_NUMBER 0x82 /* V2 only version of RTMP supported */
85:
86: #define ERTR_SEED_CONFLICT 0x101 /* Conflict between port information and net
87: * value received for the port (fatal for Rtr)
88: */
89: #define ERTR_CABLE_CONFLICT 0x102 /* Conflict between port information and net
90: * information received in a RTMP packet
91: */
92:
93: #define ERTR_RTMP_BAD_VERSION 0x103 /* We received a non phase-II RTMP packet
94: * that's bad... We can't deal with it
95: */
96:
97: #define ERTR_CABLE_STARTUP 0x104 /* the cable range we're on happen to
98: * be in the startup range. Shouldn't
99: */
100:
101: #define ERTR_CABLE_NOZONE 0x105 /* We haven't found any zones for that port
102: * after all the timeout expired
103: */
104:
105:
106: /* RTMP table entry */
107:
108: typedef struct rt_entry {
109:
110: struct rt_entry *left; /* btree left pointer */
111: struct rt_entry *right; /* btree right pointer */
112:
113: at_net_al NetStop; /* Last net # in the range, or network # if
114: non extended network */
115: at_net_al NetStart; /* Starting network number in the range, 0
116: non extended network */
117: at_net_al NextIRNet; /* Network number of next Internet Router */
118: at_node NextIRNode; /* Node ID of next Router */
119: u_char ZoneBitMap[ZT_BYTES]; /* One bit per Zone defined for this entry */
120: u_char NetDist; /* Distance in hops of the destination net */
121: u_char NetPort; /* Physical port number to forward to */
122: u_char EntryState; /* State of the entry bitmap field */
123: u_char RTMPFlag;
124: u_char AURPFlag;
125:
126: } RT_entry;
127:
128:
129: /* ZIP Table entry */
130:
131: typedef struct {
132:
133: u_short ZoneCount; /* Count of reference to zone entry */
134: at_nvestr_t Zone; /* zone name as a Network Visible Entity */
135:
136: } ZT_entry;
137:
138: /* for zone retrieval to user space only */
139: typedef struct {
140: unsigned short entryno; /* zone table entry number (1st = 0) */
141: ZT_entry zt; /* the zone table entry */
142: } ZT_entryno;
143:
144: #ifdef KERNEL
145:
146: /* Macros for Routing table B-tree easy access */
147:
148: #define RT_DELETE(NetStop, NetStart) {\
149: RT_entry *found; \
150: if ((found = rt_bdelete(NetStop, NetStart))) { \
151: memset(found, '\0', sizeof(RT_entry)); \
152: found->right = RT_table_freelist; \
153: RT_table_freelist = found; \
154: } \
155: }
156:
157: /* Set/Reset and test the All zones known bit in for the entry field */
158:
159: #define RT_ALL_ZONES_KNOWN(entry) ((entry)->EntryState & RTE_STATE_ZKNOWN)
160: #define RT_SET_ZONE_KNOWN(entry) ((entry)->EntryState |= RTE_STATE_ZKNOWN)
161: #define RT_CLR_ZONE_KNOWN(entry) ((entry)->EntryState ^= RTE_STATE_ZKNOWN)
162:
163: /*
164: * check if a zone number is in a given zone map
165: */
166: #define ZT_ISIN_ZMAP(znum, zmap) ((zmap)[(znum-1) >> 3] & 0x80 >> (znum-1) % 8)
167:
168: /* remove a zone from the zone bitmap, and check if the zone
169: * is still in use by someone else.
170: */
171:
172: #define ZT_CLR_ZMAP(num, zmap) { \
173: if ((zmap)[(num-1) >> 3] & 0x80 >> (num-1) % 8) { \
174: (zmap)[(num-1) >> 3] ^= 0x80 >> (num-1) % 8; \
175: ZT_table[(num-1)].ZoneCount-- ; \
176: } \
177: }
178:
179: /* set a bit in an entry bit map */
180:
181: #define ZT_SET_ZMAP(num, zmap) { \
182: if (!zmap[(num-1) >> 3] & 0x80 >> (num-1) % 8) { \
183: zmap[(num-1) >> 3] |= 0x80 >> (num-1) % 8; \
184: ZT_table[(num-1)].ZoneCount++ ; \
185: } \
186: }
187:
188: extern int regDefaultZone(at_ifaddr_t *);
189: extern int zonename_equal(at_nvestr_t *, at_nvestr_t *);
190:
191: extern RT_entry *RT_table_freelist;
192: extern RT_entry RT_table_start;
193: extern RT_entry *RT_table;
194: extern RT_entry *rt_binsert();
195: extern RT_entry *rt_insert();
196: extern RT_entry *rt_bdelete();
197: extern RT_entry *rt_blookup(int);
198: extern RT_entry *rt_getNextRoute(int);
199:
200: extern ZT_entry *ZT_table;
201: extern short RT_maxentry;
202: extern short ZT_maxentry;
203:
204: extern volatile int RouterMix;
205:
206: extern int zt_add_zone(char *, short);
207: extern int zt_add_zonename(at_nvestr_t *);
208: extern int zt_ent_zindex(u_char *);
209: extern ZT_entryno *zt_getNextZone(int);
210: extern void zt_remove_zones(u_char *);
211: extern void zt_set_zmap(u_short, char *);
212: extern void rtmp_router_input();
213:
214: #endif /* KERNEL */
215:
216: #endif /* _NETAT_ROUTING_TABLES_H_ */
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