The Design and Implementation of the FreeBSD Operating System, Second Edition
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FreeBSD/Linux Kernel Cross Reference
sys/net/firewire.h

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    1 /*-
    2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
    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  *      $FreeBSD$
   29  */
   30 
   31 #ifndef _NET_FIREWIRE_H_
   32 #define _NET_FIREWIRE_H_
   33 
   34 #define FW_ENCAP_UNFRAG         0
   35 #define FW_ENCAP_FIRST          1
   36 #define FW_ENCAP_LAST           2
   37 #define FW_ENCAP_NEXT           3
   38 
   39 union fw_encap {
   40                 uint32_t ul[2];
   41                 struct {
   42 #if BYTE_ORDER == BIG_ENDIAN
   43                         uint32_t lf             :2;
   44                         uint32_t reserved       :14;
   45                         uint32_t ether_type     :16;
   46 #else
   47                         uint32_t ether_type     :16;
   48                         uint32_t reserved       :14;
   49                         uint32_t lf             :2;
   50 #endif
   51                 } unfrag;
   52                 struct {
   53 #if BYTE_ORDER == BIG_ENDIAN
   54                         uint32_t lf             :2;
   55                         uint32_t reserved1      :2;
   56                         uint32_t datagram_size  :12;
   57                         uint32_t ether_type     :16;
   58                         uint32_t dgl            :16;
   59                         uint32_t reserved2      :16;
   60 #else
   61                         uint32_t ether_type     :16;
   62                         uint32_t datagram_size  :12;
   63                         uint32_t reserved1      :2;
   64                         uint32_t lf             :2;
   65                         uint32_t reserved2      :16;
   66                         uint32_t dgl            :16;
   67 #endif
   68                 } firstfrag;
   69                 struct {
   70 #if BYTE_ORDER == BIG_ENDIAN
   71                         uint32_t lf             :2;
   72                         uint32_t reserved1      :2;
   73                         uint32_t datagram_size  :12;
   74                         uint32_t reserved2      :4;
   75                         uint32_t fragment_offset :12;
   76                         uint32_t dgl            :16;
   77                         uint32_t reserved3      :16;
   78 #else
   79                         uint32_t fragment_offset :12;
   80                         uint32_t reserved2      :4;
   81                         uint32_t datagram_size  :12;
   82                         uint32_t reserved1      :2;
   83                         uint32_t lf             :2;
   84                         uint32_t reserved3      :16;
   85                         uint32_t dgl            :16;
   86 #endif
   87                 } nextfrag;
   88 };
   89 
   90 #define MTAG_FIREWIRE                   1394
   91 #define MTAG_FIREWIRE_HWADDR            0
   92 #define MTAG_FIREWIRE_SENDER_EUID       1
   93 
   94 struct fw_hwaddr {
   95         uint32_t                sender_unique_ID_hi;
   96         uint32_t                sender_unique_ID_lo;
   97         uint8_t                 sender_max_rec;
   98         uint8_t                 sspd;
   99         uint16_t                sender_unicast_FIFO_hi;
  100         uint32_t                sender_unicast_FIFO_lo;
  101 };
  102 
  103 /*
  104  * BPF wants to see one of these.
  105  */
  106 struct fw_bpfhdr {
  107         uint8_t                 firewire_dhost[8];
  108         uint8_t                 firewire_shost[8];
  109         uint16_t                firewire_type;
  110 };
  111 
  112 #ifdef _KERNEL
  113 
  114 /*
  115  * A structure to track the reassembly of a link-level fragmented
  116  * datagram.
  117  */
  118 struct fw_reass {
  119         STAILQ_ENTRY(fw_reass)  fr_link;
  120         uint32_t                fr_id;          /* host+dgl */
  121         struct mbuf             *fr_frags;      /* chain of frags */
  122 };
  123 STAILQ_HEAD(fw_reass_list, fw_reass);
  124 
  125 struct fw_com {
  126         struct ifnet            *fc_ifp;
  127         struct fw_hwaddr        fc_hwaddr;
  128         struct firewire_comm    *fc_fc;
  129         uint8_t                 fc_broadcast_channel;
  130         uint8_t                 fc_speed;       /* our speed */
  131         uint16_t                fc_node;        /* our nodeid */
  132         struct fw_reass_list    fc_frags;       /* partial datagrams */
  133 };
  134 #define IFP2FWC(ifp)    ((struct fw_com *)(ifp)->if_l2com)
  135 
  136 extern  void    firewire_input(struct ifnet *ifp, struct mbuf *m, uint16_t src);
  137 extern  void    firewire_ifattach(struct ifnet *, struct fw_hwaddr *);
  138 extern  void    firewire_ifdetach(struct ifnet *);
  139 extern  void    firewire_busreset(struct ifnet *);
  140 extern  int     firewire_ioctl(struct ifnet *, u_long, caddr_t);
  141 
  142 #endif /* !_KERNEL */
  143 
  144 #endif /* !_NET_FIREWIRE_H_ */

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