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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.
- */
- /*
- * Taken from (bsd)net/if.h. Modified for MACH kernel.
- */
- /*
- * Copyright (c) 1982, 1986 Regents of the University of California.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 4. The name of the Laboratory may not be used to endorse or promote
- * products derived from this software without specific prior written
- * permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * @(#)if.h 7.3 (Berkeley) 6/27/88
- */
- #ifndef _IF_HDR_
- #define _IF_HDR_
- #include <kern/lock.h>
- #include <kern/queue.h>
- /*
- * Queue for network output and filter input.
- */
- struct ifqueue {
- queue_head_t ifq_head; /* queue of io_req_t */
- int ifq_len; /* length of queue */
- int ifq_maxlen; /* maximum length of queue */
- int ifq_drops; /* number of packets dropped
- because queue full */
- decl_simple_lock_data(,
- ifq_lock) /* lock for queue and counters */
- };
- /*
- * Header for network interface drivers.
- */
- struct ifnet {
- short if_unit; /* unit number */
- short if_flags; /* up/down, broadcast, etc. */
- short if_timer; /* time until if_watchdog called */
- short if_mtu; /* maximum transmission unit */
- short if_header_size; /* length of header */
- short if_header_format; /* format of hardware header */
- short if_address_size; /* length of hardware address */
- short if_alloc_size; /* size of read buffer to allocate */
- char *if_address; /* pointer to hardware address */
- struct ifqueue if_snd; /* output queue */
- queue_head_t if_rcv_port_list; /* input filter list */
- queue_head_t if_snd_port_list; /* output filter list */
- decl_simple_lock_data(,
- if_rcv_port_list_lock) /* lock for input filter list */
- decl_simple_lock_data(,
- if_snd_port_list_lock) /* lock for output filter list */
- /* statistics */
- int if_ipackets; /* packets received */
- int if_ierrors; /* input errors */
- int if_opackets; /* packets sent */
- int if_oerrors; /* output errors */
- int if_collisions; /* collisions on csma interfaces */
- int if_rcvdrops; /* packets received but dropped */
- };
- #define IFF_UP 0x0001 /* interface is up */
- #define IFF_BROADCAST 0x0002 /* interface can broadcast */
- #define IFF_DEBUG 0x0004 /* turn on debugging */
- #define IFF_LOOPBACK 0x0008 /* is a loopback net */
- #define IFF_POINTOPOINT 0x0010 /* point-to-point link */
- #define IFF_RUNNING 0x0040 /* resources allocated */
- #define IFF_NOARP 0x0080 /* no address resolution protocol */
- #define IFF_PROMISC 0x0100 /* receive all packets */
- #define IFF_ALLMULTI 0x0200 /* receive all multicast packets */
- #define IFF_BRIDGE 0x0100 /* support token ring routing field */
- #define IFF_SNAP 0x0200 /* support extended sap header */
- /* internal flags only: */
- #define IFF_CANTCHANGE (IFF_BROADCAST | IFF_POINTOPOINT | IFF_RUNNING)
- /*
- * Output queues (ifp->if_snd)
- * have queues of messages stored on ifqueue structures. Entries
- * are added to and deleted from these structures by these macros, which
- * should be called with ipl raised to splimp().
- * XXX locking XXX
- */
- #define IF_QFULL(ifq) ((ifq)->ifq_len >= (ifq)->ifq_maxlen)
- #define IF_DROP(ifq) ((ifq)->ifq_drops++)
- #define IF_ENQUEUE(ifq, ior) { \
- simple_lock(&(ifq)->ifq_lock); \
- enqueue_tail(&(ifq)->ifq_head, (queue_entry_t)ior); \
- (ifq)->ifq_len++; \
- simple_unlock(&(ifq)->ifq_lock); \
- }
- #define IF_PREPEND(ifq, ior) { \
- simple_lock(&(ifq)->ifq_lock); \
- enqueue_head(&(ifq)->ifq_head, (queue_entry_t)ior); \
- (ifq)->ifq_len++; \
- simple_unlock(&(ifq)->ifq_lock); \
- }
- #define IF_DEQUEUE(ifq, ior) { \
- simple_lock(&(ifq)->ifq_lock); \
- if (((ior) = (io_req_t)dequeue_head(&(ifq)->ifq_head)) != 0) \
- (ifq)->ifq_len--; \
- simple_unlock(&(ifq)->ifq_lock); \
- }
- #define IFQ_MAXLEN 50
- #define IFQ_INIT(ifq) { \
- queue_init(&(ifq)->ifq_head); \
- simple_lock_init(&(ifq)->ifq_lock); \
- (ifq)->ifq_len = 0; \
- (ifq)->ifq_maxlen = IFQ_MAXLEN; \
- (ifq)->ifq_drops = 0; \
- }
- #define IFNET_SLOWHZ 1 /* granularity is 1 second */
- #endif /* _IF_HDR_ */
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