drivers/staging/epl/SocketLinuxKernel.c

   1 /****************************************************************************
   2
   3   (c) SYSTEC electronic GmbH, D-07973 Greiz, August-Bebel-Str. 29
   4       www.systec-electronic.com
   5
   6   Project:      openPOWERLINK
   7
   8   Description:  Wrapper for BSD socket API for Linux kernel
   9
  10   License:
  11
  12     Redistribution and use in source and binary forms, with or without
  13     modification, are permitted provided that the following conditions
  14     are met:
  15
  16     1. Redistributions of source code must retain the above copyright
  17        notice, this list of conditions and the following disclaimer.
  18
  19     2. Redistributions in binary form must reproduce the above copyright
  20        notice, this list of conditions and the following disclaimer in the
  21        documentation and/or other materials provided with the distribution.
  22
  23     3. Neither the name of SYSTEC electronic GmbH nor the names of its
  24        contributors may be used to endorse or promote products derived
  25        from this software without prior written permission. For written
  26        permission, please contact info@systec-electronic.com.
  27
  28     THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  29     "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  30     LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  31     FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
  32     COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  33     INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
  34     BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  35     LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
  36     CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  37     LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
  38     ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  39     POSSIBILITY OF SUCH DAMAGE.
  40
  41     Severability Clause:
  42
  43         If a provision of this License is or becomes illegal, invalid or
  44         unenforceable in any jurisdiction, that shall not affect:
  45         1. the validity or enforceability in that jurisdiction of any other
  46            provision of this License; or
  47         2. the validity or enforceability in other jurisdictions of that or
  48            any other provision of this License.
  49
  50   -------------------------------------------------------------------------
  51
  52                 $RCSfile: SocketLinuxKernel.c,v $
  53
  54                 $Author: D.Krueger $
  55
  56                 $Revision: 1.3 $  $Date: 2008/04/17 21:36:32 $
  57
  58                 $State: Exp $
  59
  60                 Build Environment:
  61                 Dev C++ and GNU-Compiler for m68k
  62
  63   -------------------------------------------------------------------------
  64
  65   Revision History:
  66
  67   2006/08/25 d.k.:   start of implementation
  68
  69 ****************************************************************************/
  70
  71 #include <linux/net.h>
  72 #include <linux/in.h>
  73 #include "SocketLinuxKernel.h"
  74
  75 /***************************************************************************/
  76 /*                                                                         */
  77 /*                                                                         */
  78 /*          G L O B A L   D E F I N I T I O N S                            */
  79 /*                                                                         */
  80 /*                                                                         */
  81 /***************************************************************************/
  82
  83 //---------------------------------------------------------------------------
  84 // const defines
  85 //---------------------------------------------------------------------------
  86
  87 //---------------------------------------------------------------------------
  88 // local types
  89 //---------------------------------------------------------------------------
  90
  91 //---------------------------------------------------------------------------
  92 // modul globale vars
  93 //---------------------------------------------------------------------------
  94
  95 //---------------------------------------------------------------------------
  96 // local function prototypes
  97 //---------------------------------------------------------------------------
  98
  99 //---------------------------------------------------------------------------
 100 //  Kernel Module specific Data Structures
 101 //---------------------------------------------------------------------------
 102
 103 //=========================================================================//
 104 //                                                                         //
 105 //          P U B L I C   F U N C T I O N S                                //
 106 //                                                                         //
 107 //=========================================================================//
 108
 109 //---------------------------------------------------------------------------
 110 //
 111 // Function:
 112 //
 113 // Description:
 114 //
 115 //
 116 //
 117 // Parameters:
 118 //
 119 //
 120 // Returns:
 121 //
 122 //
 123 // State:
 124 //
 125 //---------------------------------------------------------------------------
 126
 127 SOCKET socket(int af, int type, int protocol)
 128 {
 129         int rc;
 130         SOCKET socket;
 131
 132         rc = sock_create_kern(af, type, protocol, &socket);
 133         if (rc < 0) {
 134                 socket = NULL;
 135                 goto Exit;
 136         }
 137
 138       Exit:
 139         return socket;
 140 }
 141
 142 int bind(SOCKET socket_p, const struct sockaddr *addr, int addrlen)
 143 {
 144         int rc;
 145
 146         rc = socket_p->ops->bind(socket_p, (struct sockaddr *)addr, addrlen);
 147
 148         return rc;
 149 }
 150
 151 int closesocket(SOCKET socket_p)
 152 {
 153         sock_release(socket_p);
 154
 155         return 0;
 156 }
 157
 158 int recvfrom(SOCKET socket_p, char *buf, int len, int flags,
 159              struct sockaddr *from, int *fromlen)
 160 {
 161         int rc;
 162         struct msghdr msg;
 163         struct kvec iov;
 164
 165         msg.msg_control = NULL;
 166         msg.msg_controllen = 0;
 167         msg.msg_name = from;    // will be struct sock_addr
 168         msg.msg_namelen = *fromlen;
 169         iov.iov_len = len;
 170         iov.iov_base = buf;
 171
 172         rc = kernel_recvmsg(socket_p, &msg, &iov, 1, iov.iov_len, 0);
 173
 174         return rc;
 175 }
 176
 177 int sendto(SOCKET socket_p, const char *buf, int len, int flags,
 178            const struct sockaddr *to, int tolen)
 179 {
 180         int rc;
 181         struct msghdr msg;
 182         struct kvec iov;
 183
 184         msg.msg_control = NULL;
 185         msg.msg_controllen = 0;
 186         msg.msg_name = (struct sockaddr *)to;   // will be struct sock_addr
 187         msg.msg_namelen = tolen;
 188         msg.msg_flags = 0;
 189         iov.iov_len = len;
 190         iov.iov_base = (char *)buf;
 191
 192         rc = kernel_sendmsg(socket_p, &msg, &iov, 1, len);
 193
 194         return rc;
 195 }
 196
 197 // EOF