ble_link_ctx_manager.c 3.1 KB

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  1. /**
  2. * Copyright (c) 2017 - 2020, Nordic Semiconductor ASA
  3. *
  4. * All rights reserved.
  5. *
  6. * Redistribution and use in source and binary forms, with or without modification,
  7. * are permitted provided that the following conditions are met:
  8. *
  9. * 1. Redistributions of source code must retain the above copyright notice, this
  10. * list of conditions and the following disclaimer.
  11. *
  12. * 2. Redistributions in binary form, except as embedded into a Nordic
  13. * Semiconductor ASA integrated circuit in a product or a software update for
  14. * such product, must reproduce the above copyright notice, this list of
  15. * conditions and the following disclaimer in the documentation and/or other
  16. * materials provided with the distribution.
  17. *
  18. * 3. Neither the name of Nordic Semiconductor ASA nor the names of its
  19. * contributors may be used to endorse or promote products derived from this
  20. * software without specific prior written permission.
  21. *
  22. * 4. This software, with or without modification, must only be used with a
  23. * Nordic Semiconductor ASA integrated circuit.
  24. *
  25. * 5. Any software provided in binary form under this license must not be reverse
  26. * engineered, decompiled, modified and/or disassembled.
  27. *
  28. * THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS
  29. * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  30. * OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE
  31. * DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA OR CONTRIBUTORS BE
  32. * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  33. * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
  34. * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  35. * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  36. * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
  37. * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  38. *
  39. */
  40. #include "ble_link_ctx_manager.h"
  41. #include "sdk_common.h"
  42. ret_code_t blcm_link_ctx_get(blcm_link_ctx_storage_t const * const p_link_ctx_storage,
  43. uint16_t const conn_handle,
  44. void ** const pp_ctx_data)
  45. {
  46. uint8_t conn_id;
  47. if (pp_ctx_data == NULL)
  48. {
  49. return NRF_ERROR_NULL;
  50. }
  51. else
  52. {
  53. *pp_ctx_data = NULL;
  54. }
  55. VERIFY_PARAM_NOT_NULL(p_link_ctx_storage);
  56. VERIFY_PARAM_NOT_NULL(p_link_ctx_storage->p_ctx_data_pool);
  57. VERIFY_TRUE((p_link_ctx_storage->link_ctx_size % BYTES_PER_WORD) == 0, NRF_ERROR_INVALID_PARAM);
  58. conn_id = ble_conn_state_conn_idx(conn_handle);
  59. if (conn_id == BLE_CONN_STATE_MAX_CONNECTIONS)
  60. {
  61. return NRF_ERROR_NOT_FOUND;
  62. }
  63. if (conn_id >= p_link_ctx_storage->max_links_cnt)
  64. {
  65. return NRF_ERROR_NO_MEM;
  66. }
  67. *pp_ctx_data = (void *) ((uint8_t *) p_link_ctx_storage->p_ctx_data_pool +
  68. conn_id * p_link_ctx_storage->link_ctx_size);
  69. return NRF_SUCCESS;
  70. }