Initial source

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diff --git a/chips/nc.h b/chips/nc.h
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+/* 
+ * Mach Operating System
+ * Copyright (c) 1991,1990,1989,1988,1987 Carnegie Mellon University
+ * All Rights Reserved.
+ * 
+ * Permission to use, copy, modify and distribute this software and its
+ * documentation is hereby granted, provided that both the copyright
+ * notice and this permission notice appear in all copies of the
+ * software, derivative works or modified versions, and any portions
+ * thereof, and that both notices appear in supporting documentation.
+ * 
+ * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
+ * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
+ * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
+ * 
+ * Carnegie Mellon requests users of this software to return to
+ * 
+ *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
+ *  School of Computer Science
+ *  Carnegie Mellon University
+ *  Pittsburgh PA 15213-3890
+ * 
+ * any improvements or extensions that they make and grant Carnegie Mellon
+ * the rights to redistribute these changes.
+ */
+
+/*** NETWORK INTERFACE IMPLEMENTATION CORE ***/
+
+#ifndef _NC_H_
+#define _NC_H_
+
+#ifndef STUB
+#include <chips/nw.h>
+#else
+#include "nw.h"
+#endif
+
+/*** Types and data structures ***/
+
+#if PRODUCTION
+#define MAX_EP 1024
+#define MAX_DEV 16
+#else
+#define MAX_EP 32
+#define MAX_DEV 3
+#endif
+
+#define MASTER_LINE_EP 0
+#define SIGNAL_EP 1
+
+typedef struct nw_tx_headers {
+  nw_buffer_t buffer;
+  u_int msg_length;
+  char *block;
+  u_int block_length;
+  nw_peer_s peer;
+  nw_ep sender;
+  nw_options options;
+  struct nw_tx_headers *next;
+} nw_tx_header_s;
+ 
+typedef nw_tx_header_s *nw_tx_header_t;
+
+typedef struct nw_rx_headers {
+  nw_buffer_t buffer;
+  nw_ep receiver;
+  u_int reply;
+  int time_stamp;
+  struct nw_rx_headers *next;
+} nw_rx_header_s, *nw_rx_header_t;
+
+typedef enum {
+  NW_CONNECTIONLESS,
+  NW_CONNECTION_ORIENTED
+} nw_dev_type;
+
+
+typedef struct {
+  nw_result (*initialize)(int);
+  nw_result (*status)(int);
+  void      (*slow_sweep)(int);
+  void      (*fast_sweep)(int);
+  int       (*poll)(int);
+  nw_result (*send)(nw_ep, nw_tx_header_t, nw_options);
+  nw_buffer_t (*rpc)(nw_ep, nw_tx_header_t, nw_options);
+  void      (*signal)(nw_buffer_t);
+  nw_result (*open)(nw_ep, nw_address_1, nw_address_2, nw_ep);
+  nw_result (*accept)(nw_ep, nw_buffer_t, nw_ep_t);
+  nw_result (*close)(nw_ep);
+  nw_result (*add)(nw_ep, nw_address_1, nw_address_2, nw_ep);
+  nw_result (*drop)(nw_ep, nw_address_1, nw_address_2, nw_ep);
+} nw_dev_entry_s, *nw_dev_entry_t;
+  
+typedef struct {
+  nw_result status;
+  nw_dev_type type;
+  char *addr;
+  nw_address_1 local_addr_1;
+  nw_address_2 local_addr_2;
+  nw_dev_entry_t entry;
+  int fast_req;
+} nw_devcb;
+
+extern nw_devcb devct[MAX_DEV];
+
+typedef struct plists {
+  nw_peer_s peer;
+  struct plists *next;
+} nw_plist_s, *nw_plist_t;
+
+typedef struct nw_unused_buffers {
+  u_int buf_used:1;
+  u_int buf_length:31;
+  struct nw_unused_buffers *next;
+  struct nw_unused_buffers *previous;
+} nw_unused_buffer_s, *nw_unused_buffer_t;
+
+typedef struct ecbs{
+  nw_protocol protocol;
+  nw_acceptance accept;
+  nw_state state;
+  nw_plist_t conn;
+  char *buf_start;
+  char *buf_end;
+  nw_unused_buffer_t free_buffer;
+  nw_ep id:16;
+  u_int overrun:1;
+  u_int seqno:14;
+  nw_tx_header_t tx_first;
+  nw_tx_header_t tx_last;
+  nw_tx_header_t tx_initial;
+  nw_tx_header_t tx_current;
+  nw_rx_header_t rx_first;
+  nw_rx_header_t rx_last;
+  nw_ep next:16;
+  nw_ep previous:16;
+} nw_ecb, *nw_ecb_t;
+
+extern nw_ecb ect[MAX_EP];
+
+extern int nw_free_ep_first, nw_free_ep_last;
+extern int nw_free_line_first, nw_free_line_last;
+
+typedef enum {
+  NW_RECEIVE,
+  NW_RECEIVE_URGENT,
+  NW_SEND,
+  NW_SIGNAL
+} nw_delivery;
+
+
+/*** System-independent functions implemented in core ***/
+
+extern void nc_initialize();
+
+extern nw_tx_header_t nc_tx_header_allocate();
+
+extern void nc_tx_header_deallocate(nw_tx_header_t header);
+
+extern nw_rx_header_t nc_rx_header_allocate();
+
+extern void nc_rx_header_deallocate(nw_rx_header_t header);
+
+extern nw_plist_t nc_peer_allocate();
+
+extern void nc_peer_deallocate(nw_plist_t peer);
+
+extern nw_result nc_device_register(u_int dev, nw_dev_type type,
+				    char *dev_addr,
+				    nw_dev_entry_t dev_entry_table);
+
+extern nw_result nc_device_unregister(u_int dev, nw_result status);
+
+extern void nc_fast_sweep();
+
+extern void nc_fast_timer_set();
+
+extern void nc_fast_timer_reset();
+
+extern void nc_slow_sweep();
+
+extern nw_result nc_update(nw_update_type up_type, int *up_info);
+
+extern nw_result nc_lookup(nw_lookup_type lt, int *look_info);
+
+extern nw_result nc_line_update(nw_peer_t peer, nw_ep line);
+
+extern nw_ep nc_line_lookup(nw_peer_t peer);
+
+extern nw_result nc_endpoint_allocate(nw_ep_t epp, nw_protocol protocol,
+				      nw_acceptance accept,
+				      char *buffer_address, u_int buffer_size);
+
+extern nw_result nc_endpoint_deallocate(nw_ep ep);
+
+extern nw_buffer_t nc_buffer_allocate(nw_ep ep, u_int size);
+
+extern nw_result nc_buffer_deallocate(nw_ep ep, nw_buffer_t buffer);
+
+extern nw_result nc_endpoint_status(nw_ep ep,
+				    nw_state_t state, nw_peer_t peer);
+
+
+/* System-dependent function implemented in wrapper*/
+
+extern boolean_t nc_deliver_result(nw_ep ep, nw_delivery type, int result);
+
+/* Support required in wrapper */
+
+extern void h_initialize();
+
+extern void h_fast_timer_set();
+
+extern void h_fast_timer_reset();
+
+
+/* Stubs for device table */
+
+extern nw_result nc_succeed(int);
+extern nw_result nc_fail(int);
+extern void nc_null(int);
+extern int nc_null_poll(int);
+extern nw_result nc_null_send(nw_ep, nw_tx_header_t, nw_options);
+extern nw_buffer_t nc_null_rpc(nw_ep, nw_tx_header_t, nw_options);
+extern nw_result nc_local_send(nw_ep, nw_tx_header_t, nw_options);
+extern nw_buffer_t nc_local_rpc(nw_ep, nw_tx_header_t, nw_options);
+extern void nc_null_signal(nw_buffer_t);
+extern nw_result nc_open_fail(nw_ep, nw_address_1, nw_address_2, nw_ep);
+extern nw_result nc_accept_fail(nw_ep, nw_buffer_t, nw_ep_t);
+extern nw_result nc_close_fail(nw_ep);
+
+#endif /* _NC_H_ */