init gnumach copy

1 files changed, 164 insertions, 0 deletions

diff --git a/device/net_io.h b/device/net_io.h
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+++ b/device/net_io.h
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+/*
+ * Mach Operating System
+ * Copyright (c) 1991,1990,1989 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.
+ */
+/*
+ *	Author: David B. Golub, Carnegie Mellon University
+ *	Date: 	ll/89
+ */
+
+#ifndef	_DEVICE_NET_IO_H_
+#define	_DEVICE_NET_IO_H_
+
+/*
+ * Utilities for playing with network messages.
+ */
+
+#include <mach/machine/vm_types.h>
+#include <ipc/ipc_kmsg.h>
+
+#include <kern/macros.h>
+#include <kern/lock.h>
+#include <kern/kalloc.h>
+
+#include <device/if_hdr.h>
+#include <device/io_req.h>
+#include <device/net_status.h>
+
+struct net_rcv_port;
+typedef struct net_rcv_port *net_rcv_port_t;
+
+struct net_hash_entry;
+typedef struct net_hash_entry *net_hash_entry_t;
+
+struct net_hash_header;
+typedef struct net_hash_header *net_hash_header_t;
+
+/*
+ * A network packet is wrapped in a kernel message while in
+ * the kernel.
+ */
+
+#define	net_kmsg(kmsg)	((net_rcv_msg_t)&(kmsg)->ikm_header)
+
+/*
+ * Interrupt routines may allocate and free net_kmsgs with these
+ * functions.  net_kmsg_get may return IKM_NULL.
+ */
+
+extern ipc_kmsg_t net_kmsg_get(void);
+extern void net_kmsg_put(ipc_kmsg_t);
+
+/*
+ * Network utility routines.
+ */
+
+extern void net_ast(void);
+extern void net_packet(struct ifnet *, ipc_kmsg_t, unsigned int, boolean_t);
+extern void net_filter(ipc_kmsg_t, ipc_kmsg_queue_t);
+extern io_return_t net_getstat(struct ifnet *, dev_flavor_t, dev_status_t,
+			       mach_msg_type_number_t *);
+
+typedef int (*net_write_start_device_fn)(short);
+extern io_return_t net_write(struct ifnet *, net_write_start_device_fn, io_req_t);
+
+/*
+ * Non-interrupt code may allocate and free net_kmsgs with these functions.
+ */
+
+extern vm_size_t net_kmsg_size;
+
+extern void net_kmsg_collect (void);
+
+extern void net_io_init(void);
+extern void net_thread(void) __attribute__ ((noreturn));
+
+#define net_kmsg_alloc()	((ipc_kmsg_t) kalloc(net_kmsg_size))
+#define net_kmsg_free(kmsg)	kfree((vm_offset_t) (kmsg), net_kmsg_size)
+
+extern unsigned int		ntohl(unsigned int);
+extern unsigned short int	ntohs(unsigned short int);
+extern unsigned int		htonl(unsigned int);
+extern unsigned short int	htons(unsigned short int);
+
+unsigned int bpf_hash(int n, const unsigned int *keys);
+
+extern boolean_t
+net_do_filter(
+	net_rcv_port_t	infp,
+	const char *	data,
+	unsigned int	data_count,
+	const char *	header); /* CSPF */
+
+io_return_t
+net_set_filter(
+	struct ifnet	*ifp,
+	ipc_port_t	rcv_port,
+	int		priority,
+	filter_t	*filter,
+	unsigned int	filter_count);
+
+extern int
+bpf_do_filter(
+	net_rcv_port_t		infp,
+	char *			p,
+	unsigned int		wirelen,
+	char *			header,
+	unsigned int    	hlen,
+	net_hash_entry_t	**hash_headpp,
+	net_hash_entry_t	*entpp); /* BPF */
+
+int hash_ent_remove(
+	struct ifnet 		*ifp,
+	net_hash_header_t 	hp,
+	int			used,
+	net_hash_entry_t 	*head,
+	net_hash_entry_t 	entp,
+	queue_entry_t 		*dead_p);
+
+void net_free_dead_infp(queue_entry_t dead_infp);
+void net_free_dead_entp (queue_entry_t dead_entp);
+
+int bpf_validate(
+	bpf_insn_t 	f,
+	int 		bytes,
+	bpf_insn_t 	*match);
+
+int bpf_eq(
+	bpf_insn_t 	f1,
+	bpf_insn_t 	f2,
+	int 		bytes);
+
+int net_add_q_info(ipc_port_t rcv_port);
+
+int bpf_match (
+	net_hash_header_t 	hash,
+	int 			n_keys,
+	const unsigned int 	*keys,
+	net_hash_entry_t 	**hash_headpp,
+	net_hash_entry_t 	*entpp);
+
+boolean_t ethernet_priority(const ipc_kmsg_t kmsg);
+
+#endif	/* _DEVICE_NET_IO_H_ */