kopia lustrzana https://github.com/espressif/esp-idf
686 wiersze
18 KiB
C
686 wiersze
18 KiB
C
/* Bluetooth Mesh */
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/*
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* SPDX-FileCopyrightText: 2017 Intel Corporation
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* SPDX-FileContributor: 2018-2023 Espressif Systems (Shanghai) CO LTD
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <errno.h>
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#include "adv.h"
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#include "crypto.h"
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#include "mesh/mutex.h"
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#include "mesh/common.h"
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#include "mesh/access.h"
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#include "prov_common.h"
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static const struct bt_mesh_prov *prov;
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const struct bt_mesh_prov *bt_mesh_prov_get(void)
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{
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return prov;
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}
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int bt_mesh_prov_set(const struct bt_mesh_prov *val)
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{
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prov = val;
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return 0;
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}
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void bt_mesh_prov_buf_init(struct net_buf_simple *buf, uint8_t type)
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{
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net_buf_simple_reserve(buf, PROV_BUF_HEADROOM);
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net_buf_simple_add_u8(buf, type);
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}
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#define OUTPUT_OOB_BLINK 0x00
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#define OUTPUT_OOB_BEEP 0x01
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#define OUTPUT_OOB_VIBRATE 0x02
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#define OUTPUT_OOB_NUMBER 0x03
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#define OUTPUT_OOB_STRING 0x04
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#define INPUT_OOB_PUSH 0x00
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#define INPUT_OOB_TWIST 0x01
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#define INPUT_OOB_NUMBER 0x02
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#define INPUT_OOB_STRING 0x03
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bt_mesh_output_action_t bt_mesh_prov_output_action(uint8_t action)
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{
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switch (action) {
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case OUTPUT_OOB_BLINK:
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return BLE_MESH_BLINK;
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case OUTPUT_OOB_BEEP:
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return BLE_MESH_BEEP;
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case OUTPUT_OOB_VIBRATE:
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return BLE_MESH_VIBRATE;
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case OUTPUT_OOB_NUMBER:
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return BLE_MESH_DISPLAY_NUMBER;
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case OUTPUT_OOB_STRING:
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return BLE_MESH_DISPLAY_STRING;
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default:
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return BLE_MESH_NO_OUTPUT;
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}
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}
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bt_mesh_input_action_t bt_mesh_prov_input_action(uint8_t action)
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{
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switch (action) {
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case INPUT_OOB_PUSH:
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return BLE_MESH_PUSH;
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case INPUT_OOB_TWIST:
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return BLE_MESH_TWIST;
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case INPUT_OOB_NUMBER:
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return BLE_MESH_ENTER_NUMBER;
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case INPUT_OOB_STRING:
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return BLE_MESH_ENTER_STRING;
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default:
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return BLE_MESH_NO_INPUT;
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}
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}
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static const struct {
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uint16_t length;
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} prov_pdu[] = {
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{ 1 }, /* Provisioning Invite */
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{ 11 }, /* Provisioning Capabilities */
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{ 5 }, /* Provisioning Start */
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{ 64 }, /* Provisioning Public Key */
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{ 0 }, /* Provisioning Input Complete */
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{ 16 }, /* Provisioning Confirmation */
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{ 16 }, /* Provisioning Random */
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{ 33 }, /* Provisioning Data */
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{ 0 }, /* Provisioning Complete */
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{ 1 }, /* Provisioning Failed */
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{ 6 }, /* Provisioning Record Request */
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{ 7 }, /* Provisioning Record Response */
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{ 0 }, /* Provisioning Records Get */
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{ 2 }, /* Provisioning Records List */
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};
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bool bt_mesh_prov_pdu_check(uint8_t type, uint16_t length, uint8_t *reason)
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{
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if (prov_pdu[type].length != length) {
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#if CONFIG_BLE_MESH_CERT_BASED_PROV
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if ((type == PROV_REC_LIST || type == PROV_REC_RSP) &&
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length >= prov_pdu[type].length) {
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return true;
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}
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#endif
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#if CONFIG_BLE_MESH_PROV_EPA
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/* NOTE: PROV_CONFIRM and PROV_RANDOM PDU may have length 16 or 32 */
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if ((type == PROV_CONFIRM || type == PROV_RANDOM) && length == 32) {
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return true;
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}
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#endif
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BT_ERR("Invalid length %u for type 0x%02x", length, type);
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if (reason) {
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*reason = PROV_ERR_NVAL_FMT;
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}
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return false;
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}
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return true;
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}
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#if CONFIG_BLE_MESH_PB_ADV
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/* 3 transmissions, 20ms interval */
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#define PROV_XMIT BLE_MESH_TRANSMIT(2, 20)
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/* 3 transmissions, 20ms interval */
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#define CLOSE_XMIT BLE_MESH_TRANSMIT(2, 20)
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#define CLOSE_TIMEOUT K_MSEC(100)
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#define BUF_TIMEOUT K_MSEC(400)
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#define XACT_SEG_DATA(link, _seg) (&link->rx.buf->data[20 + (((_seg) - 1) * 23)])
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#define XACT_SEG_RECV(link, _seg) (link->rx.seg &= ~(1 << (_seg)))
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uint8_t node_next_xact_id(struct bt_mesh_prov_link *link)
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{
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if (link->tx.id != 0 && link->tx.id != 0xFF) {
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return ++link->tx.id;
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}
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link->tx.id = 0x80;
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return link->tx.id;
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}
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uint8_t pvnr_next_xact_id(struct bt_mesh_prov_link *link)
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{
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if (link->tx.id > 0x7F) {
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link->tx.id = 0;
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}
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return link->tx.id++;
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}
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bool bt_mesh_gen_prov_start(struct bt_mesh_prov_link *link,
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struct net_buf_simple *buf,
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struct prov_rx *rx, bool *close)
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{
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if (link->rx.seg) {
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BT_INFO("Get Start while there are unreceived segments");
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return false;
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}
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if (link->rx.prev_id == rx->xact_id) {
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BT_INFO("Resending ack");
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bt_mesh_gen_prov_ack_send(link, rx->xact_id);
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return false;
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}
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link->rx.buf->len = net_buf_simple_pull_be16(buf);
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link->rx.id = rx->xact_id;
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link->rx.fcs = net_buf_simple_pull_u8(buf);
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BT_DBG("len %u last_seg %u total_len %u fcs 0x%02x", buf->len,
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START_LAST_SEG(rx->gpc), link->rx.buf->len, link->rx.fcs);
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/* At least one-octet pdu type is needed */
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if (link->rx.buf->len < 1) {
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BT_ERR("Ignoring zero-length provisioning PDU");
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if (close) {
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*close = true;
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}
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return false;
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}
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if (START_LAST_SEG(rx->gpc) > START_LAST_SEG_MAX) {
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BT_ERR("Invalid SegN 0x%02x", START_LAST_SEG(rx->gpc));
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if (close) {
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*close = true;
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}
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return false;
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}
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if (link->rx.buf->len > link->rx.buf->size) {
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BT_ERR("Too large provisioning PDU (%u bytes)",
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link->rx.buf->len);
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if (close) {
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*close = true;
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}
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return false;
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}
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if (START_LAST_SEG(rx->gpc) > 0 && link->rx.buf->len <= 20) {
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BT_ERR("Too small total length for multi-segment PDU");
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if (close) {
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*close = true;
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}
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return false;
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}
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link->rx.seg = (1 << (START_LAST_SEG(rx->gpc) + 1)) - 1;
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link->rx.last_seg = START_LAST_SEG(rx->gpc);
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memcpy(link->rx.buf->data, buf->data, buf->len);
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XACT_SEG_RECV(link, 0);
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/* Still have some segments to receive */
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if (link->rx.seg) {
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return false;
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}
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return true;
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}
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bool bt_mesh_gen_prov_cont(struct bt_mesh_prov_link *link,
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struct net_buf_simple *buf,
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struct prov_rx *rx, bool *close)
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{
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uint8_t seg = CONT_SEG_INDEX(rx->gpc);
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BT_DBG("len %u, seg_index %u", buf->len, seg);
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if (link->rx.seg == 0 && link->rx.prev_id == rx->xact_id) {
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BT_INFO("Resending ack");
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bt_mesh_gen_prov_ack_send(link, rx->xact_id);
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return false;
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}
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if (rx->xact_id != link->rx.id) {
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BT_WARN("Data for unknown transaction (%u != %u)",
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rx->xact_id, link->rx.id);
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return false;
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}
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if (seg > link->rx.last_seg) {
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BT_ERR("Invalid segment index %u", seg);
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if (close) {
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*close = true;
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}
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return false;
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}
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if (seg == link->rx.last_seg) {
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uint8_t expect_len = (link->rx.buf->len - 20 -
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(23 * (link->rx.last_seg - 1)));
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if (expect_len != buf->len) {
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BT_ERR("Incorrect last seg len: %u != %u",
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expect_len, buf->len);
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if (close) {
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*close = true;
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}
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return false;
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}
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}
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if ((link->rx.seg & BIT(seg)) == 0) {
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BT_INFO("Ignore already received segment");
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return false;
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}
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memcpy(XACT_SEG_DATA(link, seg), buf->data, buf->len);
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XACT_SEG_RECV(link, seg);
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/* Still have some segments to receive */
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if (link->rx.seg) {
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return false;
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}
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return true;
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}
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static struct net_buf *adv_buf_create(void)
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{
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struct net_buf *buf = NULL;
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buf = bt_mesh_adv_create(BLE_MESH_ADV_PROV, BUF_TIMEOUT);
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if (!buf) {
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BT_ERR("Out of provisioning buffers");
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return NULL;
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}
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return buf;
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}
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static void ack_complete(uint16_t duration, int err, void *user_data)
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{
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struct bt_mesh_prov_link *link = user_data;
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BT_DBG("xact %u complete", link->pending_ack);
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link->pending_ack = PROV_XACT_NVAL;
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}
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void bt_mesh_gen_prov_ack_send(struct bt_mesh_prov_link *link, uint8_t xact_id)
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{
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static const struct bt_mesh_send_cb cb = {
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.start = ack_complete,
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};
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const struct bt_mesh_send_cb *complete = NULL;
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struct net_buf *buf = NULL;
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BT_DBG("xact_id %u", xact_id);
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if (link->pending_ack == xact_id) {
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BT_DBG("Not sending duplicate ack");
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return;
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}
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buf = adv_buf_create();
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if (!buf) {
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return;
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}
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if (link->pending_ack == PROV_XACT_NVAL) {
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link->pending_ack = xact_id;
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complete = &cb;
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} else {
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complete = NULL;
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}
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net_buf_add_be32(buf, link->link_id);
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net_buf_add_u8(buf, xact_id);
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net_buf_add_u8(buf, GPC_ACK);
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bt_mesh_adv_send(buf, PROV_XMIT, complete, link);
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net_buf_unref(buf);
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}
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static void free_segments(struct bt_mesh_prov_link *link)
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{
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for (size_t i = 0; i < ARRAY_SIZE(link->tx.buf); i++) {
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struct net_buf *buf = link->tx.buf[i];
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if (!buf) {
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break;
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}
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link->tx.buf[i] = NULL;
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bt_mesh_adv_buf_ref_debug(__func__, buf, 3U, BLE_MESH_BUF_REF_SMALL);
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/* Mark as canceled */
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BLE_MESH_ADV(buf)->busy = 0U;
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net_buf_unref(buf);
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}
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}
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void bt_mesh_prov_clear_tx(struct bt_mesh_prov_link *link, bool cancel)
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{
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bt_mesh_mutex_lock(&link->buf_lock);
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if (cancel) {
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k_delayed_work_cancel(&link->tx.retransmit);
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}
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free_segments(link);
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bt_mesh_mutex_unlock(&link->buf_lock);
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}
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static void buf_sent(int err, void *user_data)
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{
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struct bt_mesh_prov_link *link = user_data;
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int32_t timeout = RETRANSMIT_TIMEOUT;
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if (!link->tx.buf[0]) {
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return;
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}
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/* The following may happen in TWO situations:
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* 1. LINK_CLOSING flag is set, and Link Close is sent;
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* 2. LINK_CLOSING flag is set, and any other provisioning
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* PDU within the adv queue is sent.
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* Regarding the second situation, since LINK_CLOSING flag
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* is set, so once a pdu is sent, the link could be closed.
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*/
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if (bt_mesh_atomic_test_bit(link->flags, LINK_CLOSING)) {
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timeout = CLOSE_TIMEOUT;
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}
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k_delayed_work_submit(&link->tx.retransmit, timeout);
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}
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static struct bt_mesh_send_cb buf_sent_cb = {
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.end = buf_sent,
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};
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static void prov_retransmit(struct k_work *work)
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{
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struct bt_mesh_prov_link *link = work->user_data;
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int64_t timeout = TRANSACTION_TIMEOUT;
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if (!bt_mesh_atomic_test_bit(link->flags, LINK_ACTIVE) &&
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!bt_mesh_atomic_test_bit(link->flags, LINK_CLOSING)) {
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BT_WARN("Link not active");
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return;
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}
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#if CONFIG_BLE_MESH_FAST_PROV
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if (link->tx_pdu_type >= link->last_tx_pdu) {
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timeout = K_SECONDS(30);
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}
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#endif /* CONFIG_BLE_MESH_FAST_PROV */
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/* Use a timeout of 0 ~ 60s for PB-Remote Link Open Procedure. */
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if (bt_mesh_atomic_test_bit(link->flags, PB_REMOTE) &&
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bt_mesh_atomic_test_bit(link->flags, PBR_OPENING)) {
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timeout = K_SECONDS(link->pb_remote_timeout);
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}
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if (k_uptime_get() - link->tx.start > timeout) {
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BT_WARN("Timeout, giving up transaction");
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if (bt_mesh_atomic_test_bit(link->flags, PB_REMOTE)) {
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bt_mesh_prov_clear_tx(link, true);
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link->pb_remote_cbd = false;
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link->pb_remote_reset = false;
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link->pb_remote_csp = true;
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if (link->pb_remote_close) {
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link->pb_remote_close(link, CLOSE_REASON_TIMEOUT);
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}
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} else {
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/* Send Link Close if the device is Provisioner, or
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* directly reset adv link if the device is Node.
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*/
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if (link->retrans_timeout) {
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link->retrans_timeout(link, CLOSE_REASON_TIMEOUT);
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}
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}
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return;
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}
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if (bt_mesh_atomic_test_bit(link->flags, LINK_CLOSING)) {
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if (bt_mesh_atomic_test_bit(link->flags, PB_REMOTE)) {
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bt_mesh_prov_clear_tx(link, true);
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link->pb_remote_cbd = false;
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/* In this case, no need to send Link Close */
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link->pb_remote_reset = true;
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if (link->pb_remote_close) {
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link->pb_remote_close(link, link->reason);
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}
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} else {
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if (link->reset_adv_link) {
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link->reset_adv_link(link, link->reason);
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}
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}
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return;
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}
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bt_mesh_mutex_lock(&link->buf_lock);
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for (size_t i = 0; i < ARRAY_SIZE(link->tx.buf); i++) {
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struct net_buf *buf = link->tx.buf[i];
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if (!buf) {
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break;
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}
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if (BLE_MESH_ADV(buf)->busy) {
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continue;
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}
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BT_DBG("%u bytes: %s", buf->len, bt_hex(buf->data, buf->len));
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if (i + 1 < ARRAY_SIZE(link->tx.buf) && link->tx.buf[i + 1]) {
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bt_mesh_adv_send(buf, PROV_XMIT, NULL, NULL);
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} else {
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bt_mesh_adv_send(buf, PROV_XMIT, &buf_sent_cb, link);
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}
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}
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bt_mesh_mutex_unlock(&link->buf_lock);
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}
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int bt_mesh_prov_retransmit_init(struct bt_mesh_prov_link *link)
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{
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link->tx.retransmit.work.user_data = link;
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return k_delayed_work_init(&link->tx.retransmit, prov_retransmit);
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}
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static void send_reliable(struct bt_mesh_prov_link *link, uint8_t xmit)
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{
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link->tx.start = k_uptime_get();
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for (size_t i = 0; i < ARRAY_SIZE(link->tx.buf); i++) {
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struct net_buf *buf = link->tx.buf[i];
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if (!buf) {
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break;
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}
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if (i + 1 < ARRAY_SIZE(link->tx.buf) && link->tx.buf[i + 1]) {
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bt_mesh_adv_send(buf, xmit, NULL, NULL);
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} else {
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bt_mesh_adv_send(buf, xmit, &buf_sent_cb, link);
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}
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}
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}
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int bt_mesh_prov_bearer_ctl_send(struct bt_mesh_prov_link *link, uint8_t op,
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void *data, uint8_t data_len)
|
|
{
|
|
struct net_buf *buf = NULL;
|
|
uint8_t xmit = 0;
|
|
|
|
BT_DBG("op 0x%02x data_len %u", op, data_len);
|
|
|
|
bt_mesh_prov_clear_tx(link, true);
|
|
|
|
buf = adv_buf_create();
|
|
if (!buf) {
|
|
return -ENOBUFS;
|
|
}
|
|
|
|
net_buf_add_be32(buf, link->link_id);
|
|
/* Transaction ID, always 0 for Bearer messages */
|
|
net_buf_add_u8(buf, 0x00);
|
|
net_buf_add_u8(buf, GPC_CTL(op));
|
|
net_buf_add_mem(buf, data, data_len);
|
|
|
|
link->tx.buf[0] = buf;
|
|
link->tx.id = 0; /* Set Transaction ID to 0 */
|
|
|
|
xmit = (op == LINK_CLOSE) ? CLOSE_XMIT : PROV_XMIT;
|
|
|
|
send_reliable(link, xmit);
|
|
|
|
if (op == LINK_CLOSE) {
|
|
bt_mesh_atomic_clear_bit(link->flags, LINK_ACTIVE);
|
|
bt_mesh_atomic_set_bit(link->flags, LINK_CLOSING);
|
|
link->reason = *((uint8_t *)data);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static uint8_t last_seg(uint8_t len)
|
|
{
|
|
if (len <= START_PAYLOAD_MAX) {
|
|
return 0;
|
|
}
|
|
|
|
len -= START_PAYLOAD_MAX;
|
|
|
|
return 1 + (len / CONT_PAYLOAD_MAX);
|
|
}
|
|
|
|
int bt_mesh_prov_send_adv(struct bt_mesh_prov_link *link, struct net_buf_simple *msg)
|
|
{
|
|
struct net_buf *start = NULL, *buf = NULL;
|
|
int32_t timeout = PROTOCOL_TIMEOUT;
|
|
uint8_t seg_len = 0U, seg_id = 0U;
|
|
uint8_t xact_id = 0U;
|
|
|
|
BT_DBG("len %u: %s", msg->len, bt_hex(msg->data, msg->len));
|
|
|
|
if (link->next_xact_id == NULL) {
|
|
BT_ERR("Empty transaction id cb");
|
|
return -EIO;
|
|
}
|
|
|
|
bt_mesh_prov_clear_tx(link, true);
|
|
|
|
start = adv_buf_create();
|
|
if (!start) {
|
|
return -ENOBUFS;
|
|
}
|
|
|
|
xact_id = link->next_xact_id(link);
|
|
net_buf_add_be32(start, link->link_id);
|
|
net_buf_add_u8(start, xact_id);
|
|
|
|
net_buf_add_u8(start, GPC_START(last_seg(msg->len)));
|
|
net_buf_add_be16(start, msg->len);
|
|
net_buf_add_u8(start, bt_mesh_fcs_calc(msg->data, msg->len));
|
|
|
|
link->tx.buf[0] = start;
|
|
|
|
#if CONFIG_BLE_MESH_FAST_PROV
|
|
link->tx_pdu_type = msg->data[0];
|
|
#endif /* CONFIG_BLE_MESH_FAST_PROV */
|
|
|
|
seg_len = MIN(msg->len, START_PAYLOAD_MAX);
|
|
BT_DBG("seg 0 len %u: %s", seg_len, bt_hex(msg->data, seg_len));
|
|
net_buf_add_mem(start, msg->data, seg_len);
|
|
net_buf_simple_pull(msg, seg_len);
|
|
|
|
for (seg_id = 1; msg->len > 0; seg_id++) {
|
|
if (seg_id >= ARRAY_SIZE(link->tx.buf)) {
|
|
BT_ERR("Too big message (seg_id %d)", seg_id);
|
|
bt_mesh_prov_clear_tx(link, false);
|
|
return -E2BIG;
|
|
}
|
|
|
|
buf = adv_buf_create();
|
|
if (!buf) {
|
|
bt_mesh_prov_clear_tx(link, false);
|
|
return -ENOBUFS;
|
|
}
|
|
|
|
link->tx.buf[seg_id] = buf;
|
|
|
|
seg_len = MIN(msg->len, CONT_PAYLOAD_MAX);
|
|
|
|
BT_DBG("seg_id %u len %u: %s", seg_id, seg_len,
|
|
bt_hex(msg->data, seg_len));
|
|
|
|
net_buf_add_be32(buf, link->link_id);
|
|
net_buf_add_u8(buf, xact_id);
|
|
net_buf_add_u8(buf, GPC_CONT(seg_id));
|
|
net_buf_add_mem(buf, msg->data, seg_len);
|
|
net_buf_simple_pull(msg, seg_len);
|
|
}
|
|
|
|
send_reliable(link, PROV_XMIT);
|
|
|
|
#if CONFIG_BLE_MESH_FAST_PROV
|
|
if (link->tx_pdu_type >= link->last_tx_pdu) {
|
|
timeout = K_SECONDS(60);
|
|
}
|
|
#endif /* CONFIG_BLE_MESH_FAST_PROV */
|
|
|
|
k_delayed_work_submit(&link->prot_timer, timeout);
|
|
|
|
return 0;
|
|
}
|
|
#endif /* CONFIG_BLE_MESH_PB_ADV */
|
|
|
|
int bt_mesh_prov_send(struct bt_mesh_prov_link *link, struct net_buf_simple *buf)
|
|
{
|
|
#if CONFIG_BLE_MESH_RPR_SRV
|
|
if (bt_mesh_atomic_test_bit(link->flags, PB_NPPI)) {
|
|
if (link->pb_remote_send) {
|
|
BT_INFO("NPPI, send prov pdu 0x%02x", buf->data[0]);
|
|
return link->pb_remote_send(link, buf);
|
|
}
|
|
|
|
BT_ERR("No NPPI send callback provided");
|
|
return -EIO;
|
|
}
|
|
#endif /* CONFIG_BLE_MESH_RPR_SRV */
|
|
|
|
#if CONFIG_BLE_MESH_RPR_CLI || CONFIG_BLE_MESH_RPR_SRV
|
|
if (bt_mesh_atomic_test_bit(link->flags, PB_REMOTE)) {
|
|
if (link->pb_remote_send) {
|
|
BT_INFO("PB-Remote, send prov pdu 0x%02x", buf->data[0]);
|
|
return link->pb_remote_send(link, buf);
|
|
}
|
|
BT_ERR("No PB-Remote send callback provided");
|
|
return -EIO;
|
|
}
|
|
#endif /* CONFIG_BLE_MESH_RPR_CLI || CONFIG_BLE_MESH_RPR_SRV */
|
|
|
|
#if CONFIG_BLE_MESH_PB_GATT
|
|
if (link->conn) {
|
|
if (link->pb_gatt_send) {
|
|
return link->pb_gatt_send(link, buf);
|
|
}
|
|
|
|
BT_ERR("No PB-GATT send callback provided");
|
|
return -EIO;
|
|
}
|
|
#endif /* CONFIG_BLE_MESH_PB_GATT */
|
|
|
|
#if CONFIG_BLE_MESH_PB_ADV
|
|
return bt_mesh_prov_send_adv(link, buf);
|
|
#endif /* CONFIG_BLE_MESH_PB_ADV */
|
|
|
|
/* Shall not reach here. */
|
|
return 0;
|
|
}
|