mbim.c

   1 /*
   2  * Copyright (C) 2016  Bjørn Mork <bjorn@mork.no>
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the
  16  * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  17  * Boston, MA 02110-1301 USA.
  18  */
  19
  20 #include <stdbool.h>
  21 #include <stdint.h>
  22 #include <string.h>
  23
  24 #include <stdio.h>
  25
  26 #include "mbim.h"
  27
  28 static const uint8_t qmiuuid[16] = { 0xd1, 0xa3, 0x0b, 0xc2, 0xf9, 0x7a, 0x6e, 0x43,
  29                                      0xbf, 0x65, 0xc7, 0xe2, 0x4f, 0xb0, 0xf0, 0xd3 };
  30
  31 bool is_mbim_qmi(struct mbim_command_message *msg)
  32 {
  33         return msg->header.type == cpu_to_le32(MBIM_MESSAGE_TYPE_COMMAND_DONE) &&
  34                 msg->command_id == cpu_to_le32(MBIM_CID_QMI_MSG) &&
  35                 !msg->command_type &&   /* actually 'status' here */
  36                 !memcmp(msg->service_id, qmiuuid, 16);
  37                                                                             }
  38
  39 void mbim_qmi_cmd(struct mbim_command_message *msg, int len, uint16_t tid)
  40 {
  41         msg->header.type = cpu_to_le32(MBIM_MESSAGE_TYPE_COMMAND);
  42         msg->header.length = sizeof(*msg) + len;
  43         msg->header.transaction_id = cpu_to_le32(tid);
  44         msg->fragment_header.total = 1;
  45         msg->fragment_header.current = 0;
  46         memcpy(msg->service_id, qmiuuid, 16);
  47         msg->command_id = cpu_to_le32(MBIM_CID_QMI_MSG);
  48         msg->command_type = cpu_to_le32(MBIM_MESSAGE_COMMAND_TYPE_SET);
  49         msg->buffer_length = len;
  50 }