kern/tru64/mbuf.hh

   1 /*
   2  * Copyright (c) 2003 The Regents of The University of Michigan
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions are
   7  * met: redistributions of source code must retain the above copyright
   8  * notice, this list of conditions and the following disclaimer;
   9  * redistributions in binary form must reproduce the above copyright
  10  * notice, this list of conditions and the following disclaimer in the
  11  * documentation and/or other materials provided with the distribution;
  12  * neither the name of the copyright holders nor the names of its
  13  * contributors may be used to endorse or promote products derived from
  14  * this software without specific prior written permission.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  17  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  18  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  19  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  20  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  21  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  22  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  26  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27  */
  28
  29 #ifndef __MBUF_HH__
  30 #define __MBUF_HH__
  31
  32 #include "sim/host.hh"
  33 #include "targetarch/isa_traits.hh"
  34
  35 struct m_hdr {
  36     Addr        mh_next;        // 0x00
  37     Addr        mh_nextpkt;     // 0x08
  38     Addr        mh_data;        // 0x10
  39     int32_t     mh_len;         // 0x18
  40     int32_t     mh_type;        // 0x1C
  41     int32_t     mh_flags;       // 0x20
  42     int32_t     mh_pad0;        // 0x24
  43     Addr        mh_foo[4];      // 0x28, 0x30, 0x38, 0x40
  44 };
  45
  46 struct  pkthdr {
  47     int32_t     len;
  48     int32_t     protocolSum;
  49     Addr        rcvif;
  50 };
  51
  52 struct m_ext {
  53     Addr        ext_buf;        // 0x00
  54     Addr        ext_free;       // 0x08
  55     uint32_t    ext_size;       // 0x10
  56     uint32_t    ext_pad0;       // 0x14
  57     Addr        ext_arg;        // 0x18
  58     struct      ext_refq {
  59         Addr    forw, back;     // 0x20, 0x28
  60     } ext_ref;
  61     Addr        uiomove_f;      // 0x30
  62     int32_t     protocolSum;    // 0x38
  63     int32_t     bytesSummed;    // 0x3C
  64     Addr        checksum;       // 0x40
  65 };
  66
  67 struct mbuf {
  68     struct      m_hdr m_hdr;
  69     union {
  70         struct {
  71             struct      pkthdr MH_pkthdr;
  72             union {
  73                 struct  m_ext MH_ext;
  74                 char    MH_databuf[1];
  75             } MH_dat;
  76         } MH;
  77         char    M_databuf[1];
  78     } M_dat;
  79 };
  80
  81 #define m_attr          m_hdr.mh_attr
  82 #define m_next          m_hdr.mh_next
  83 #define m_len           m_hdr.mh_len
  84 #define m_data          m_hdr.mh_data
  85 #define m_type          m_hdr.mh_type
  86 #define m_flags         m_hdr.mh_flags
  87 #define m_nextpkt       m_hdr.mh_nextpkt
  88 #define m_act           m_nextpkt
  89 #define m_pkthdr        M_dat.MH.MH_pkthdr
  90 #define m_ext           M_dat.MH.MH_dat.MH_ext
  91 #define m_pktdat        M_dat.MH.MH_dat.MH_databuf
  92 #define m_dat           M_dat.M_databuf
  93
  94 #endif // __MBUF_HH__