ref: 18686ac2cbf6b97dd0250234ce128bd9ad350d6e
src/libs/mynewt-nimble/nimble/host/mesh/src/adv.c
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/* Bluetooth Mesh */ /* * Copyright (c) 2018 Nordic Semiconductor ASA * Copyright (c) 2017 Intel Corporation * * SPDX-License-Identifier: Apache-2.0 */ #include "syscfg/syscfg.h" #define MESH_LOG_MODULE BLE_MESH_ADV_LOG #include "mesh/mesh.h" #include "host/ble_hs_adv.h" #include "host/ble_gap.h" #include "nimble/hci_common.h" #include "mesh/porting.h" #include "adv.h" #include "net.h" #include "foundation.h" #include "beacon.h" #include "prov.h" #include "proxy.h" /* Convert from ms to 0.625ms units */ #define ADV_SCAN_UNIT(_ms) ((_ms) * 8 / 5) /* Window and Interval are equal for continuous scanning */ #define MESH_SCAN_INTERVAL_MS 30 #define MESH_SCAN_WINDOW_MS 30 #define MESH_SCAN_INTERVAL ADV_SCAN_UNIT(MESH_SCAN_INTERVAL_MS) #define MESH_SCAN_WINDOW ADV_SCAN_UNIT(MESH_SCAN_WINDOW_MS) /* Pre-5.0 controllers enforce a minimum interval of 100ms * whereas 5.0+ controllers can go down to 20ms. */ #define ADV_INT_DEFAULT_MS 100 #define ADV_INT_FAST_MS 20 static s32_t adv_int_min = ADV_INT_DEFAULT_MS; /* TinyCrypt PRNG consumes a lot of stack space, so we need to have * an increased call stack whenever it's used. */ #if MYNEWT #define ADV_STACK_SIZE 768 OS_TASK_STACK_DEFINE(g_blemesh_stack, ADV_STACK_SIZE); struct os_task adv_task; #endif static struct ble_npl_eventq adv_queue; extern u8_t g_mesh_addr_type; static int adv_initialized = false; static os_membuf_t adv_buf_mem[OS_MEMPOOL_SIZE( MYNEWT_VAL(BLE_MESH_ADV_BUF_COUNT), BT_MESH_ADV_DATA_SIZE + BT_MESH_MBUF_HEADER_SIZE)]; struct os_mbuf_pool adv_os_mbuf_pool; static struct os_mempool adv_buf_mempool; static const u8_t adv_type[] = { [BT_MESH_ADV_PROV] = BLE_HS_ADV_TYPE_MESH_PROV, [BT_MESH_ADV_DATA] = BLE_HS_ADV_TYPE_MESH_MESSAGE, [BT_MESH_ADV_BEACON] = BLE_HS_ADV_TYPE_MESH_BEACON, [BT_MESH_ADV_URI] = BLE_HS_ADV_TYPE_URI, }; static struct bt_mesh_adv adv_pool[CONFIG_BT_MESH_ADV_BUF_COUNT]; static struct bt_mesh_adv *adv_alloc(int id) { return &adv_pool[id]; } static inline void adv_send_start(u16_t duration, int err, const struct bt_mesh_send_cb *cb, void *cb_data) { if (cb && cb->start) { cb->start(duration, err, cb_data); } } static inline void adv_send_end(int err, const struct bt_mesh_send_cb *cb, void *cb_data) { if (cb && cb->end) { cb->end(err, cb_data); } } static inline void adv_send(struct os_mbuf *buf) { const struct bt_mesh_send_cb *cb = BT_MESH_ADV(buf)->cb; void *cb_data = BT_MESH_ADV(buf)->cb_data; struct ble_gap_adv_params param = { 0 }; u16_t duration, adv_int; struct bt_data ad; int err; adv_int = max(adv_int_min, BT_MESH_TRANSMIT_INT(BT_MESH_ADV(buf)->xmit)); #if MYNEWT_VAL(BLE_CONTROLLER) duration = ((BT_MESH_TRANSMIT_COUNT(BT_MESH_ADV(buf)->xmit) + 1) * (adv_int + 10)); #else duration = (MESH_SCAN_WINDOW_MS + ((BT_MESH_TRANSMIT_COUNT(BT_MESH_ADV(buf)->xmit) + 1) * (adv_int + 10))); #endif BT_DBG("type %u om_len %u: %s", BT_MESH_ADV(buf)->type, buf->om_len, bt_hex(buf->om_data, buf->om_len)); BT_DBG("count %u interval %ums duration %ums", BT_MESH_TRANSMIT_COUNT(BT_MESH_ADV(buf)->xmit) + 1, adv_int, duration); ad.type = adv_type[BT_MESH_ADV(buf)->type]; ad.data_len = buf->om_len; ad.data = buf->om_data; param.itvl_min = ADV_SCAN_UNIT(adv_int); param.itvl_max = param.itvl_min; param.conn_mode = BLE_GAP_CONN_MODE_NON; err = bt_le_adv_start(¶m, &ad, 1, NULL, 0); net_buf_unref(buf); adv_send_start(duration, err, cb, cb_data); if (err) { BT_ERR("Advertising failed: err %d", err); return; } BT_DBG("Advertising started. Sleeping %u ms", duration); k_sleep(K_MSEC(duration)); err = bt_le_adv_stop(false); adv_send_end(err, cb, cb_data); if (err) { BT_ERR("Stopping advertising failed: err %d", err); return; } BT_DBG("Advertising stopped"); } void mesh_adv_thread(void *args) { static struct ble_npl_event *ev; struct os_mbuf *buf; #if (MYNEWT_VAL(BLE_MESH_PROXY)) s32_t timeout; #endif BT_DBG("started"); while (1) { #if (MYNEWT_VAL(BLE_MESH_PROXY)) ev = ble_npl_eventq_get(&adv_queue, 0); while (!ev) { timeout = bt_mesh_proxy_adv_start(); BT_DBG("Proxy Advertising up to %d ms", (int) timeout); // FIXME: should we redefine K_SECONDS macro instead in glue? if (timeout != K_FOREVER) { timeout = ble_npl_time_ms_to_ticks32(timeout); } ev = ble_npl_eventq_get(&adv_queue, timeout); bt_mesh_proxy_adv_stop(); } #else ev = ble_npl_eventq_get(&adv_queue, BLE_NPL_TIME_FOREVER); #endif if (!ev || !ble_npl_event_get_arg(ev)) { continue; } buf = ble_npl_event_get_arg(ev); /* busy == 0 means this was canceled */ if (BT_MESH_ADV(buf)->busy) { BT_MESH_ADV(buf)->busy = 0; adv_send(buf); } else { net_buf_unref(buf); } /* os_sched(NULL); */ } } void bt_mesh_adv_update(void) { static struct ble_npl_event ev = { }; BT_DBG(""); ble_npl_eventq_put(&adv_queue, &ev); } struct os_mbuf *bt_mesh_adv_create_from_pool(struct os_mbuf_pool *pool, bt_mesh_adv_alloc_t get_id, enum bt_mesh_adv_type type, u8_t xmit, s32_t timeout) { struct bt_mesh_adv *adv; struct os_mbuf *buf; if (atomic_test_bit(bt_mesh.flags, BT_MESH_SUSPENDED)) { BT_WARN("Refusing to allocate buffer while suspended"); return NULL; } buf = os_mbuf_get_pkthdr(pool, BT_MESH_ADV_USER_DATA_SIZE); if (!buf) { return NULL; } adv = get_id(net_buf_id(buf)); BT_MESH_ADV(buf) = adv; memset(adv, 0, sizeof(*adv)); adv->type = type; adv->xmit = xmit; adv->ref_cnt = 1; ble_npl_event_set_arg(&adv->ev, buf); return buf; } struct os_mbuf *bt_mesh_adv_create(enum bt_mesh_adv_type type, u8_t xmit, s32_t timeout) { return bt_mesh_adv_create_from_pool(&adv_os_mbuf_pool, adv_alloc, type, xmit, timeout); } void bt_mesh_adv_send(struct os_mbuf *buf, const struct bt_mesh_send_cb *cb, void *cb_data) { BT_DBG("buf %p, type 0x%02x len %u: %s", buf, BT_MESH_ADV(buf)->type, buf->om_len, bt_hex(buf->om_data, buf->om_len)); BT_MESH_ADV(buf)->cb = cb; BT_MESH_ADV(buf)->cb_data = cb_data; BT_MESH_ADV(buf)->busy = 1; net_buf_put(&adv_queue, net_buf_ref(buf)); } static void bt_mesh_scan_cb(const bt_addr_le_t *addr, s8_t rssi, u8_t adv_type, struct os_mbuf *buf) { if (adv_type != BLE_HCI_ADV_TYPE_ADV_NONCONN_IND) { return; } #if BT_MESH_EXTENDED_DEBUG BT_DBG("len %u: %s", buf->om_len, bt_hex(buf->om_data, buf->om_len)); #endif while (buf->om_len > 1) { struct net_buf_simple_state state; u8_t len, type; len = net_buf_simple_pull_u8(buf); /* Check for early termination */ if (len == 0) { return; } if (len > buf->om_len) { BT_WARN("AD malformed"); return; } net_buf_simple_save(buf, &state); type = net_buf_simple_pull_u8(buf); switch (type) { case BLE_HS_ADV_TYPE_MESH_MESSAGE: bt_mesh_net_recv(buf, rssi, BT_MESH_NET_IF_ADV); break; #if MYNEWT_VAL(BLE_MESH_PB_ADV) case BLE_HS_ADV_TYPE_MESH_PROV: bt_mesh_pb_adv_recv(buf); break; #endif case BLE_HS_ADV_TYPE_MESH_BEACON: bt_mesh_beacon_recv(buf); break; default: break; } net_buf_simple_restore(buf, &state); net_buf_simple_pull(buf, len); } } void bt_mesh_adv_init(void) { int rc; /* Advertising should only be initialized once. Calling * os_task init the second time will result in an assert. */ if (adv_initialized) { return; } rc = os_mempool_init(&adv_buf_mempool, MYNEWT_VAL(BLE_MESH_ADV_BUF_COUNT), BT_MESH_ADV_DATA_SIZE + BT_MESH_MBUF_HEADER_SIZE, adv_buf_mem, "adv_buf_pool"); assert(rc == 0); rc = os_mbuf_pool_init(&adv_os_mbuf_pool, &adv_buf_mempool, BT_MESH_ADV_DATA_SIZE + BT_MESH_MBUF_HEADER_SIZE, MYNEWT_VAL(BLE_MESH_ADV_BUF_COUNT)); assert(rc == 0); ble_npl_eventq_init(&adv_queue); #if MYNEWT os_task_init(&adv_task, "mesh_adv", mesh_adv_thread, NULL, MYNEWT_VAL(BLE_MESH_ADV_TASK_PRIO), OS_WAIT_FOREVER, g_blemesh_stack, ADV_STACK_SIZE); #endif /* For BT5 controllers we can have fast advertising interval */ if (ble_hs_hci_get_hci_version() >= BLE_HCI_VER_BCS_5_0) { adv_int_min = ADV_INT_FAST_MS; } adv_initialized = true; } int ble_adv_gap_mesh_cb(struct ble_gap_event *event, void *arg) { #if MYNEWT_VAL(BLE_EXT_ADV) struct ble_gap_ext_disc_desc *ext_desc; #endif struct ble_gap_disc_desc *desc; struct os_mbuf *buf = NULL; #if BT_MESH_EXTENDED_DEBUG BT_DBG("event->type %d", event->type); #endif switch (event->type) { #if MYNEWT_VAL(BLE_EXT_ADV) case BLE_GAP_EVENT_EXT_DISC: ext_desc = &event->ext_disc; buf = os_mbuf_get_pkthdr(&adv_os_mbuf_pool, 0); if (!buf || os_mbuf_append(buf, ext_desc->data, ext_desc->length_data)) { BT_ERR("Could not append data"); goto done; } bt_mesh_scan_cb(&ext_desc->addr, ext_desc->rssi, ext_desc->legacy_event_type, buf); break; #endif case BLE_GAP_EVENT_DISC: desc = &event->disc; buf = os_mbuf_get_pkthdr(&adv_os_mbuf_pool, 0); if (!buf || os_mbuf_append(buf, desc->data, desc->length_data)) { BT_ERR("Could not append data"); goto done; } bt_mesh_scan_cb(&desc->addr, desc->rssi, desc->event_type, buf); break; default: break; } done: if (buf) { os_mbuf_free_chain(buf); } return 0; } int bt_mesh_scan_enable(void) { int err; #if MYNEWT_VAL(BLE_EXT_ADV) struct ble_gap_ext_disc_params uncoded_params = { .itvl = MESH_SCAN_INTERVAL, .window = MESH_SCAN_WINDOW, .passive = 1 }; BT_DBG(""); err = ble_gap_ext_disc(g_mesh_addr_type, 0, 0, 0, 0, 0, &uncoded_params, NULL, NULL, NULL); #else struct ble_gap_disc_params scan_param = { .passive = 1, .filter_duplicates = 0, .itvl = MESH_SCAN_INTERVAL, .window = MESH_SCAN_WINDOW }; BT_DBG(""); err = ble_gap_disc(g_mesh_addr_type, BLE_HS_FOREVER, &scan_param, NULL, NULL); #endif if (err && err != BLE_HS_EALREADY) { BT_ERR("starting scan failed (err %d)", err); return err; } return 0; } int bt_mesh_scan_disable(void) { int err; BT_DBG(""); err = ble_gap_disc_cancel(); if (err && err != BLE_HS_EALREADY) { BT_ERR("stopping scan failed (err %d)", err); return err; } return 0; } |