| /**************************************************************************** |
| ******* ******* |
| ******* R O U T E H E A D E R |
| ******* ******* |
| **************************************************************************** |
| |
| Author : Ian Nandhra / Jeremy Rolls |
| Date : |
| |
| * |
| * (C) 1990 - 2000 Specialix International Ltd., Byfleet, Surrey, UK. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| |
| Version : 0.01 |
| |
| |
| Mods |
| ---------------------------------------------------------------------------- |
| Date By Description |
| ---------------------------------------------------------------------------- |
| |
| ***************************************************************************/ |
| |
| #ifndef _route_h |
| #define _route_h |
| |
| #ifdef SCCS_LABELS |
| #ifndef lint |
| /* static char *_rio_route_h_sccs = "@(#)route.h 1.3"; */ |
| #endif |
| #endif |
| |
| #define MAX_LINKS 4 |
| #define MAX_NODES 17 /* Maximum nodes in a subnet */ |
| #define NODE_BYTES ((MAX_NODES / 8) + 1) /* Number of bytes needed for |
| 1 bit per node */ |
| #define ROUTE_DATA_SIZE (NODE_BYTES + 2) /* Number of bytes for complete |
| info about cost etc. */ |
| #define ROUTES_PER_PACKET ((PKT_MAX_DATA_LEN -2)/ ROUTE_DATA_SIZE) |
| /* Number of nodes we can squeeze |
| into one packet */ |
| #define MAX_TOPOLOGY_PACKETS (MAX_NODES / ROUTES_PER_PACKET + 1) |
| /************************************************ |
| * Define the types of command for the ROUTE RUP. |
| ************************************************/ |
| #define ROUTE_REQUEST 0 /* Request an ID */ |
| #define ROUTE_FOAD 1 /* Kill the RTA */ |
| #define ROUTE_ALREADY 2 /* ID given already */ |
| #define ROUTE_USED 3 /* All ID's used */ |
| #define ROUTE_ALLOCATE 4 /* Here it is */ |
| #define ROUTE_REQ_TOP 5 /* I bet you didn't expect.... |
| the Topological Inquisition */ |
| #define ROUTE_TOPOLOGY 6 /* Topology request answered FD */ |
| /******************************************************************* |
| * Define the Route Map Structure |
| * |
| * The route map gives a pointer to a Link Structure to use. |
| * This allows Disconnected Links to be checked quickly |
| ******************************************************************/ |
| typedef struct COST_ROUTE COST_ROUTE; |
| struct COST_ROUTE { |
| unsigned char cost; /* Cost down this link */ |
| unsigned char route[NODE_BYTES]; /* Nodes thorough this route */ |
| } ; |
| |
| typedef struct ROUTE_STR ROUTE_STR ; |
| struct ROUTE_STR { |
| COST_ROUTE cost_route[MAX_LINKS]; |
| /* cost / route for this link */ |
| ushort favoured; /* favoured link */ |
| } ; |
| |
| |
| #define NO_LINK (short) 5 /* Link unattached */ |
| #define ROUTE_NO_ID (short) 100 /* No Id */ |
| #define ROUTE_DISCONNECT (ushort) 0xff /* Not connected */ |
| #define ROUTE_INTERCONNECT (ushort) 0x40 /* Sub-net interconnect */ |
| |
| |
| #define SYNC_RUP (ushort) 255 |
| #define COMMAND_RUP (ushort) 254 |
| #define ERROR_RUP (ushort) 253 |
| #define POLL_RUP (ushort) 252 |
| #define BOOT_RUP (ushort) 251 |
| #define ROUTE_RUP (ushort) 250 |
| #define STATUS_RUP (ushort) 249 |
| #define POWER_RUP (ushort) 248 |
| |
| #define HIGHEST_RUP (ushort) 255 /* Set to Top one */ |
| #define LOWEST_RUP (ushort) 248 /* Set to bottom one */ |
| |
| #endif |
| |
| /*********** end of file ***********/ |
| |