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      1 /******************************************************************************
      2  *
      3  *  Copyright 2004-2012 Broadcom Corporation
      4  *
      5  *  Licensed under the Apache License, Version 2.0 (the "License");
      6  *  you may not use this file except in compliance with the License.
      7  *  You may obtain a copy of the License at:
      8  *
      9  *  http://www.apache.org/licenses/LICENSE-2.0
     10  *
     11  *  Unless required by applicable law or agreed to in writing, software
     12  *  distributed under the License is distributed on an "AS IS" BASIS,
     13  *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     14  *  See the License for the specific language governing permissions and
     15  *  limitations under the License.
     16  *
     17  ******************************************************************************/
     18 
     19 /******************************************************************************
     20  *
     21  *  This is the implementation file for data gateway call-in functions.
     22  *
     23  ******************************************************************************/
     24 
     25 #include "bt_target.h"
     26 
     27 #include <string.h>
     28 
     29 #include "bt_common.h"
     30 #include "bt_utils.h"
     31 #include "bta_api.h"
     32 #include "bta_pan_api.h"
     33 #include "bta_pan_ci.h"
     34 #include "bta_pan_int.h"
     35 #include "osi/include/osi.h"
     36 #include "pan_api.h"
     37 
     38 #if (BTA_PAN_INCLUDED == TRUE)
     39 
     40 /*******************************************************************************
     41  *
     42  * Function         bta_pan_ci_tx_ready
     43  *
     44  * Description      This function sends an event to PAN indicating the phone is
     45  *                  ready for more data and PAN should call
     46  *                  bta_pan_co_tx_path().
     47  *                  This function is used when the TX data path is configured
     48  *                  to use a pull interface.
     49  *
     50  *
     51  * Returns          void
     52  *
     53  ******************************************************************************/
     54 void bta_pan_ci_tx_ready(uint16_t handle) {
     55   BT_HDR* p_buf = (BT_HDR*)osi_malloc(sizeof(BT_HDR));
     56 
     57   p_buf->layer_specific = handle;
     58   p_buf->event = BTA_PAN_CI_TX_READY_EVT;
     59 
     60   bta_sys_sendmsg(p_buf);
     61 }
     62 
     63 /*******************************************************************************
     64  *
     65  * Function         bta_pan_ci_rx_ready
     66  *
     67  * Description      This function sends an event to PAN indicating the phone
     68  *                  has data available to send to PAN and PAN should call
     69  *                  bta_pan_co_rx_path().  This function is used when the RX
     70  *                  data path is configured to use a pull interface.
     71  *
     72  *
     73  * Returns          void
     74  *
     75  ******************************************************************************/
     76 void bta_pan_ci_rx_ready(uint16_t handle) {
     77   BT_HDR* p_buf = (BT_HDR*)osi_malloc(sizeof(BT_HDR));
     78 
     79   p_buf->layer_specific = handle;
     80   p_buf->event = BTA_PAN_CI_RX_READY_EVT;
     81 
     82   bta_sys_sendmsg(p_buf);
     83 }
     84 
     85 /*******************************************************************************
     86  *
     87  * Function         bta_pan_ci_tx_flow
     88  *
     89  * Description      This function is called to enable or disable data flow on
     90  *                  the TX path.  The phone should call this function to
     91  *                  disable data flow when it is congested and cannot handle
     92  *                  any more data sent by bta_pan_co_tx_write() or
     93  *                  bta_pan_co_tx_writebuf().  This function is used when the
     94  *                  TX data path is configured to use a push interface.
     95  *
     96  *
     97  * Returns          void
     98  *
     99  ******************************************************************************/
    100 void bta_pan_ci_tx_flow(uint16_t handle, bool enable) {
    101   tBTA_PAN_CI_TX_FLOW* p_buf =
    102       (tBTA_PAN_CI_TX_FLOW*)osi_malloc(sizeof(tBTA_PAN_CI_TX_FLOW));
    103 
    104   p_buf->hdr.layer_specific = handle;
    105   p_buf->hdr.event = BTA_PAN_CI_TX_FLOW_EVT;
    106   p_buf->enable = enable;
    107 
    108   bta_sys_sendmsg(p_buf);
    109 }
    110 
    111 /*******************************************************************************
    112  *
    113  * Function         bta_pan_ci_rx_write
    114  *
    115  * Description      This function is called to send data to PAN when the RX path
    116  *                  is configured to use a push interface.  The function copies
    117  *                  data to an event buffer and sends it to PAN.
    118  *
    119  *
    120  * Returns          void
    121  *
    122  ******************************************************************************/
    123 void bta_pan_ci_rx_write(uint16_t handle, const RawAddress& dst,
    124                          const RawAddress& src, uint16_t protocol,
    125                          uint8_t* p_data, uint16_t len, bool ext) {
    126   BT_HDR* p_buf = (BT_HDR*)osi_malloc(PAN_BUF_SIZE);
    127 
    128   p_buf->offset = PAN_MINIMUM_OFFSET;
    129 
    130   /* copy all other params before the data */
    131   ((tBTA_PAN_DATA_PARAMS*)p_buf)->src = src;
    132   ((tBTA_PAN_DATA_PARAMS*)p_buf)->dst = dst;
    133   ((tBTA_PAN_DATA_PARAMS*)p_buf)->protocol = protocol;
    134   ((tBTA_PAN_DATA_PARAMS*)p_buf)->ext = ext;
    135   p_buf->len = len;
    136 
    137   /* copy data */
    138   memcpy((uint8_t*)(p_buf + 1) + p_buf->offset, p_data, len);
    139 
    140   p_buf->layer_specific = handle;
    141   p_buf->event = BTA_PAN_CI_RX_WRITEBUF_EVT;
    142 
    143   bta_sys_sendmsg(p_buf);
    144 }
    145 
    146 /*******************************************************************************
    147  *
    148  * Function         bta_pan_ci_rx_writebuf
    149  *
    150  * Description      This function is called to send data to the phone when
    151  *                  the RX path is configured to use a push interface with
    152  *                  zero copy.  The function sends an event to PAN containing
    153  *                  the data buffer. The buffer will be freed by BTA; the
    154  *                  phone must not free the buffer.
    155  *
    156  *
    157  * Returns          void
    158  *
    159  ******************************************************************************/
    160 void bta_pan_ci_rx_writebuf(uint16_t handle, const RawAddress& dst,
    161                             const RawAddress& src, uint16_t protocol,
    162                             BT_HDR* p_buf, bool ext) {
    163   /* copy all other params before the data */
    164   ((tBTA_PAN_DATA_PARAMS*)p_buf)->src = src;
    165   ((tBTA_PAN_DATA_PARAMS*)p_buf)->dst = dst;
    166   ((tBTA_PAN_DATA_PARAMS*)p_buf)->protocol = protocol;
    167   ((tBTA_PAN_DATA_PARAMS*)p_buf)->ext = ext;
    168 
    169   p_buf->layer_specific = handle;
    170   p_buf->event = BTA_PAN_CI_RX_WRITEBUF_EVT;
    171   bta_sys_sendmsg(p_buf);
    172 }
    173 
    174 /*******************************************************************************
    175  *
    176  * Function         bta_pan_ci_readbuf
    177  *
    178  * Description
    179  *
    180  *
    181  * Returns          void
    182  *
    183  ******************************************************************************/
    184 BT_HDR* bta_pan_ci_readbuf(uint16_t handle, RawAddress& src, RawAddress& dst,
    185                            uint16_t* p_protocol, bool* p_ext, bool* p_forward) {
    186   tBTA_PAN_SCB* p_scb = bta_pan_scb_by_handle(handle);
    187   BT_HDR* p_buf;
    188 
    189   if (p_scb == NULL) return NULL;
    190 
    191   p_buf = (BT_HDR*)fixed_queue_try_dequeue(p_scb->data_queue);
    192   if (p_buf != NULL) {
    193     src = ((tBTA_PAN_DATA_PARAMS*)p_buf)->src;
    194     dst = ((tBTA_PAN_DATA_PARAMS*)p_buf)->dst;
    195     *p_protocol = ((tBTA_PAN_DATA_PARAMS*)p_buf)->protocol;
    196     *p_ext = ((tBTA_PAN_DATA_PARAMS*)p_buf)->ext;
    197     *p_forward = ((tBTA_PAN_DATA_PARAMS*)p_buf)->forward;
    198   }
    199 
    200   return p_buf;
    201 }
    202 
    203 /*******************************************************************************
    204  *
    205  * Function         bta_pan_ci_set_mfilters
    206  *
    207  * Description      This function is called to set multicast filters
    208  *
    209  *
    210  * Returns          void
    211  *
    212  ******************************************************************************/
    213 void bta_pan_ci_set_mfilters(uint16_t handle, uint16_t num_mcast_filters,
    214                              uint8_t* p_start_array, uint8_t* p_end_array) {
    215   PAN_SetMulticastFilters(handle, num_mcast_filters, p_start_array,
    216                           p_end_array);
    217 }
    218 
    219 /*******************************************************************************
    220  *
    221  * Function         bta_pan_ci_set_mfilters
    222  *
    223  * Description      This function is called to set protocol filters
    224  *
    225  *
    226  * Returns          void
    227  *
    228  ******************************************************************************/
    229 void bta_pan_ci_set_pfilters(uint16_t handle, uint16_t num_filters,
    230                              uint16_t* p_start_array, uint16_t* p_end_array) {
    231   PAN_SetProtocolFilters(handle, num_filters, p_start_array, p_end_array);
    232 }
    233 #else
    234 
    235 void bta_pan_ci_tx_ready(UNUSED_ATTR uint16_t handle) {}
    236 
    237 void bta_pan_ci_rx_ready(UNUSED_ATTR uint16_t handle) {}
    238 
    239 void bta_pan_ci_tx_flow(UNUSED_ATTR uint16_t handle, UNUSED_ATTR bool enable) {}
    240 
    241 void bta_pan_ci_rx_writebuf(UNUSED_ATTR uint16_t handle,
    242                             UNUSED_ATTR const RawAddress& src,
    243                             UNUSED_ATTR const RawAddress& dst,
    244                             UNUSED_ATTR uint16_t protocol,
    245                             UNUSED_ATTR BT_HDR* p_buf, UNUSED_ATTR bool ext) {}
    246 
    247 BT_HDR* bta_pan_ci_readbuf(UNUSED_ATTR uint16_t handle,
    248                            UNUSED_ATTR RawAddress& src,
    249                            UNUSED_ATTR RawAddress& dst,
    250                            UNUSED_ATTR uint16_t* p_protocol,
    251                            UNUSED_ATTR bool* p_ext,
    252                            UNUSED_ATTR bool* p_forward) {
    253   return NULL;
    254 }
    255 
    256 void bta_pan_ci_set_pfilters(UNUSED_ATTR uint16_t handle,
    257                              UNUSED_ATTR uint16_t num_filters,
    258                              UNUSED_ATTR uint16_t* p_start_array,
    259                              UNUSED_ATTR uint16_t* p_end_array) {}
    260 
    261 void bta_pan_ci_set_mfilters(UNUSED_ATTR uint16_t handle,
    262                              UNUSED_ATTR uint16_t num_mcast_filters,
    263                              UNUSED_ATTR uint8_t* p_start_array,
    264                              UNUSED_ATTR uint8_t* p_end_array) {}
    265 
    266 #endif /* BTA_PAN_API */
    267