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firewire.h (4017B) - Raw

      1 /*-
      2  * SPDX-License-Identifier: BSD-2-Clause
      3  *
      4  * Copyright (c) 2004 Doug Rabson
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
     17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
     20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     26  * SUCH DAMAGE.
     27  */
     28 
     29 #ifndef _NET_FIREWIRE_H_
     30 #define _NET_FIREWIRE_H_
     31 
     32 #define FW_ENCAP_UNFRAG		0
     33 #define FW_ENCAP_FIRST		1
     34 #define FW_ENCAP_LAST		2
     35 #define FW_ENCAP_NEXT		3
     36 
     37 union fw_encap {
     38 		uint32_t ul[2];
     39 		struct {
     40 #if BYTE_ORDER == BIG_ENDIAN
     41 			uint32_t lf		:2;
     42 			uint32_t reserved	:14;
     43 			uint32_t ether_type	:16;
     44 #else
     45 			uint32_t ether_type	:16;
     46 			uint32_t reserved	:14;
     47 			uint32_t lf		:2;
     48 #endif
     49 		} unfrag;
     50 		struct {
     51 #if BYTE_ORDER == BIG_ENDIAN
     52 			uint32_t lf		:2;
     53 			uint32_t reserved1	:2;
     54 			uint32_t datagram_size	:12;
     55 			uint32_t ether_type	:16;
     56 			uint32_t dgl		:16;
     57 			uint32_t reserved2	:16;
     58 #else
     59 			uint32_t ether_type	:16;
     60 			uint32_t datagram_size	:12;
     61 			uint32_t reserved1	:2;
     62 			uint32_t lf		:2;
     63 			uint32_t reserved2	:16;
     64 			uint32_t dgl		:16;
     65 #endif
     66 		} firstfrag;
     67 		struct {
     68 #if BYTE_ORDER == BIG_ENDIAN
     69 			uint32_t lf		:2;
     70 			uint32_t reserved1	:2;
     71 			uint32_t datagram_size	:12;
     72 			uint32_t reserved2	:4;
     73 			uint32_t fragment_offset :12;
     74 			uint32_t dgl		:16;
     75 			uint32_t reserved3	:16;
     76 #else
     77 			uint32_t fragment_offset :12;
     78 			uint32_t reserved2	:4;
     79 			uint32_t datagram_size	:12;
     80 			uint32_t reserved1	:2;
     81 			uint32_t lf		:2;
     82 			uint32_t reserved3	:16;
     83 			uint32_t dgl		:16;
     84 #endif
     85 		} nextfrag;
     86 };
     87 
     88 #define MTAG_FIREWIRE			1394
     89 #define MTAG_FIREWIRE_HWADDR		0
     90 #define MTAG_FIREWIRE_SENDER_EUID	1
     91 
     92 struct fw_hwaddr {
     93 	uint32_t		sender_unique_ID_hi;
     94 	uint32_t		sender_unique_ID_lo;
     95 	uint8_t			sender_max_rec;
     96 	uint8_t			sspd;
     97 	uint16_t		sender_unicast_FIFO_hi;
     98 	uint32_t		sender_unicast_FIFO_lo;
     99 };
    100 
    101 /*
    102  * BPF wants to see one of these.
    103  */
    104 struct fw_bpfhdr {
    105 	uint8_t			firewire_dhost[8];
    106 	uint8_t			firewire_shost[8];
    107 	uint16_t		firewire_type;
    108 };
    109 
    110 #ifdef _KERNEL
    111 
    112 /*
    113  * A structure to track the reassembly of a link-level fragmented
    114  * datagram.
    115  */
    116 struct fw_reass {
    117 	STAILQ_ENTRY(fw_reass)	fr_link;
    118 	uint32_t		fr_id;		/* host+dgl */
    119 	struct mbuf		*fr_frags;	/* chain of frags */
    120 };
    121 STAILQ_HEAD(fw_reass_list, fw_reass);
    122 
    123 struct fw_com {
    124 	struct ifnet		*fc_ifp;
    125 	struct fw_hwaddr	fc_hwaddr;
    126 	struct firewire_comm	*fc_fc;
    127 	uint8_t			fc_broadcast_channel;
    128 	uint8_t			fc_speed;	/* our speed */
    129 	uint16_t		fc_node;	/* our nodeid */
    130 	struct fw_reass_list	fc_frags;	/* partial datagrams */
    131 };
    132 #define	IFP2FWC(ifp)	((struct fw_com *)if_getl2com(ifp))
    133 
    134 extern	void	firewire_input(struct ifnet *ifp, struct mbuf *m, uint16_t src);
    135 extern	void	firewire_ifattach(struct ifnet *, struct fw_hwaddr *);
    136 extern	void	firewire_ifdetach(struct ifnet *);
    137 extern	void	firewire_busreset(struct ifnet *);
    138 extern	int	firewire_ioctl(struct ifnet *, u_long, caddr_t);
    139 
    140 #endif /* !_KERNEL */
    141 
    142 #endif /* !_NET_FIREWIRE_H_ */