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/* Bluetooth Mesh */
/*
* SPDX-FileCopyrightText: 2017 Intel Corporation
* SPDX-FileContributor: 2018-2024 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <string.h>
#include <errno.h>
#include <stdbool.h>
#include "crypto.h"
#include "adv.h"
#include "scan.h"
#include "mesh.h"
#include "lpn.h"
#include "rpl.h"
#include "friend.h"
#include "transport.h"
#include "access.h"
#include "foundation.h"
#include "beacon.h"
#include "settings.h"
#include "fast_prov.h"
#include "prov_node.h"
#include "test.h"
#include "fast_prov.h"
#include "proxy_client.h"
#include "proxy_server.h"
#include "pvnr_mgmt.h"
#if CONFIG_BLE_MESH_V11_SUPPORT
#include "mesh_v1.1/utils.h"
#endif
/* Minimum valid Mesh Network PDU length. The Network headers
* themselves take up 9 bytes. After that there is a minimum of 1 byte
* payload for both CTL=1 and CTL=0 PDUs (smallest OpCode is 1 byte). CTL=1
* PDUs must use a 64-bit (8 byte) NetMIC, whereas CTL=0 PDUs have at least
* a 32-bit (4 byte) NetMIC and AppMIC giving again a total of 8 bytes.
*/
#define BLE_MESH_NET_MIN_PDU_LEN (BLE_MESH_NET_HDR_LEN + 1 + 8)
/* Seq limit after IV Update is triggered */
#define IV_UPDATE_SEQ_LIMIT 8000000
/* Determine how many friendship credentials we need */
#if CONFIG_BLE_MESH_FRIEND
#define FRIEND_CRED_COUNT CONFIG_BLE_MESH_FRIEND_LPN_COUNT
#elif CONFIG_BLE_MESH_LOW_POWER
#define FRIEND_CRED_COUNT CONFIG_BLE_MESH_SUBNET_COUNT
#else
#define FRIEND_CRED_COUNT 0
#endif
#if FRIEND_CRED_COUNT > 0
static struct friend_cred friend_cred[FRIEND_CRED_COUNT];
#endif
static struct {
uint32_t src:15, /* MSB of source address is always 0 */
seq:17;
} msg_cache[CONFIG_BLE_MESH_MSG_CACHE_SIZE];
static uint16_t msg_cache_next;
/* Singleton network context (the implementation only supports one) */
struct bt_mesh_net bt_mesh = {
.local_queue = SYS_SLIST_STATIC_INIT(&bt_mesh.local_queue),
.sub = {
[0 ... (CONFIG_BLE_MESH_SUBNET_COUNT - 1)] = {
.net_idx = BLE_MESH_KEY_UNUSED,
}
},
.app_keys = {
[0 ... (CONFIG_BLE_MESH_APP_KEY_COUNT - 1)] = {
.net_idx = BLE_MESH_KEY_UNUSED,
}
},
};
static uint32_t dup_cache[4];
static int dup_cache_next;
#if CONFIG_BLE_MESH_RELAY_ADV_BUF
#define BLE_MESH_MAX_STORED_RELAY_COUNT (CONFIG_BLE_MESH_RELAY_ADV_BUF_COUNT / 2)
#endif
static bool check_dup(struct net_buf_simple *data)
{
const uint8_t *tail = net_buf_simple_tail(data);
uint32_t val = 0U;
int i;
val = sys_get_be32(tail - 4) ^ sys_get_be32(tail - 8);
for (i = 0; i < ARRAY_SIZE(dup_cache); i++) {
if (dup_cache[i] == val) {
return true;
}
}
dup_cache[dup_cache_next++] = val;
dup_cache_next %= ARRAY_SIZE(dup_cache);
return false;
}
static bool msg_cache_match(struct bt_mesh_net_rx *rx,
struct net_buf_simple *pdu)
{
int i;
for (i = 0; i < ARRAY_SIZE(msg_cache); i++) {
if (msg_cache[i].src == BLE_MESH_NET_HDR_SRC(pdu->data) &&
msg_cache[i].seq == (BLE_MESH_NET_HDR_SEQ(pdu->data) & BIT_MASK(17))) {
return true;
}
}
return false;
}
static void msg_cache_add(struct bt_mesh_net_rx *rx)
{
rx->msg_cache_idx = msg_cache_next++;
msg_cache[rx->msg_cache_idx].src = rx->ctx.addr;
msg_cache[rx->msg_cache_idx].seq = rx->seq;
msg_cache_next %= ARRAY_SIZE(msg_cache);
}
#if CONFIG_BLE_MESH_PROVISIONER
void bt_mesh_msg_cache_clear(uint16_t unicast_addr, uint8_t elem_num)
{
int i;
for (i = 0; i < ARRAY_SIZE(msg_cache); i++) {
if (msg_cache[i].src >= unicast_addr &&
msg_cache[i].src < unicast_addr + elem_num) {
memset(&msg_cache[i], 0, sizeof(msg_cache[i]));
}
}
}
#endif /* CONFIG_BLE_MESH_PROVISIONER */
struct bt_mesh_subnet *bt_mesh_subnet_get(uint16_t net_idx)
{
if (bt_mesh_is_provisioned()) {
#if CONFIG_BLE_MESH_NODE
if (!IS_ENABLED(CONFIG_BLE_MESH_FAST_PROV)) {
if (net_idx == BLE_MESH_KEY_ANY) {
return &bt_mesh.sub[0];
}
for (int i = 0; i < ARRAY_SIZE(bt_mesh.sub); i++) {
if (bt_mesh.sub[i].net_idx == net_idx) {
return &bt_mesh.sub[i];
}
}
} else {
return bt_mesh_fast_prov_subnet_get(net_idx);
}
#endif
} else if (bt_mesh_is_provisioner_en()) {
#if CONFIG_BLE_MESH_PROVISIONER
if (net_idx == BLE_MESH_KEY_ANY) {
return bt_mesh.p_sub[0];
}
for (int i = 0; i < ARRAY_SIZE(bt_mesh.p_sub); i++) {
if (bt_mesh.p_sub[i] &&
bt_mesh.p_sub[i]->net_idx == net_idx) {
return bt_mesh.p_sub[i];
}
}
#endif
}
return NULL;
}
int bt_mesh_net_keys_create(struct bt_mesh_subnet_keys *keys,
const uint8_t key[16])
{
uint8_t p[] = { 0 };
uint8_t nid = 0U;
int err = 0;
err = bt_mesh_k2(key, p, sizeof(p), &nid, keys->enc, keys->privacy);
if (err) {
BT_ERR("Unable to generate NID, EncKey & PrivacyKey");
return err;
}
memcpy(keys->net, key, 16);
keys->nid = nid;
BT_DBG("NID 0x%02x EncKey %s", keys->nid, bt_hex(keys->enc, 16));
BT_DBG("PrivacyKey %s", bt_hex(keys->privacy, 16));
err = bt_mesh_k3(key, keys->net_id);
if (err) {
BT_ERR("Unable to generate Net ID");
return err;
}
BT_DBG("NetID %s", bt_hex(keys->net_id, 8));
#if CONFIG_BLE_MESH_GATT_PROXY_SERVER
err = bt_mesh_identity_key(key, keys->identity);
if (err) {
BT_ERR("Unable to generate IdentityKey");
return err;
}
BT_DBG("IdentityKey %s", bt_hex(keys->identity, 16));
#endif /* GATT_PROXY */
err = bt_mesh_secure_beacon_key(key, keys->beacon);
if (err) {
BT_ERR("Unable to generate beacon key");
return err;
}
BT_DBG("BeaconKey %s", bt_hex(keys->beacon, 16));
#if CONFIG_BLE_MESH_PRIVATE_BEACON
err = bt_mesh_private_beacon_key(key, keys->private_beacon);
if (err) {
BT_ERR("Unable to generate private beacon key");
return err;
}
BT_DBG("PrivateBeaconKey %s", bt_hex(keys->private_beacon, 16));
#endif /* CONFIG_BLE_MESH_PRIVATE_BEACON */
#if CONFIG_BLE_MESH_DF_SRV
p[0] = 0x02;
err = bt_mesh_k2(key, p, sizeof(p), &nid, keys->direct_enc, keys->direct_privacy);
if (err) {
BT_ERR("Unable to generate directed NID, EncKey & PrivacyKey");
return err;
}
keys->direct_nid = nid;
#endif /* CONFIG_BLE_MESH_DF_SRV */
return 0;
}
#if (CONFIG_BLE_MESH_LOW_POWER || CONFIG_BLE_MESH_FRIEND)
int friend_cred_set(struct friend_cred *cred, uint8_t idx, const uint8_t net_key[16])
{
uint16_t lpn_addr = 0U, frnd_addr = 0U;
uint8_t p[9] = {0};
int err = 0;
#if CONFIG_BLE_MESH_LOW_POWER
if (cred->addr == bt_mesh.lpn.frnd) {
lpn_addr = bt_mesh_primary_addr();
frnd_addr = cred->addr;
} else {
lpn_addr = cred->addr;
frnd_addr = bt_mesh_primary_addr();
}
#else
lpn_addr = cred->addr;
frnd_addr = bt_mesh_primary_addr();
#endif
BT_DBG("LPNAddress 0x%04x FriendAddress 0x%04x", lpn_addr, frnd_addr);
BT_DBG("LPNCounter 0x%04x FriendCounter 0x%04x", cred->lpn_counter,
cred->frnd_counter);
p[0] = 0x01;
sys_put_be16(lpn_addr, p + 1);
sys_put_be16(frnd_addr, p + 3);
sys_put_be16(cred->lpn_counter, p + 5);
sys_put_be16(cred->frnd_counter, p + 7);
err = bt_mesh_k2(net_key, p, sizeof(p), &cred->cred[idx].nid,
cred->cred[idx].enc, cred->cred[idx].privacy);
if (err) {
BT_ERR("Unable to generate NID, EncKey & PrivacyKey");
return err;
}
BT_DBG("Friend NID 0x%02x EncKey %s", cred->cred[idx].nid,
bt_hex(cred->cred[idx].enc, 16));
BT_DBG("Friend PrivacyKey %s", bt_hex(cred->cred[idx].privacy, 16));
return 0;
}
void friend_cred_refresh(uint16_t net_idx)
{
int i;
for (i = 0; i < ARRAY_SIZE(friend_cred); i++) {
struct friend_cred *cred = &friend_cred[i];
if (cred->addr != BLE_MESH_ADDR_UNASSIGNED &&
cred->net_idx == net_idx) {
memcpy(&cred->cred[0], &cred->cred[1],
sizeof(cred->cred[0]));
}
}
}
int friend_cred_update(struct bt_mesh_subnet *sub)
{
int err = 0, i;
BT_DBG("net_idx 0x%04x", sub->net_idx);
for (i = 0; i < ARRAY_SIZE(friend_cred); i++) {
struct friend_cred *cred = &friend_cred[i];
if (cred->addr == BLE_MESH_ADDR_UNASSIGNED ||
cred->net_idx != sub->net_idx) {
continue;
}
err = friend_cred_set(cred, 1, sub->keys[1].net);
if (err) {
return err;
}
}
return 0;
}
struct friend_cred *friend_cred_create(struct bt_mesh_subnet *sub, uint16_t addr,
uint16_t lpn_counter, uint16_t frnd_counter)
{
struct friend_cred *cred = NULL;
int i, err = 0;
BT_DBG("net_idx 0x%04x addr 0x%04x", sub->net_idx, addr);
for (cred = NULL, i = 0; i < ARRAY_SIZE(friend_cred); i++) {
if ((friend_cred[i].addr == BLE_MESH_ADDR_UNASSIGNED) ||
(friend_cred[i].addr == addr &&
friend_cred[i].net_idx == sub->net_idx)) {
cred = &friend_cred[i];
break;
}
}
if (!cred) {
BT_WARN("No free friend credential slots");
return NULL;
}
cred->net_idx = sub->net_idx;
cred->addr = addr;
cred->lpn_counter = lpn_counter;
cred->frnd_counter = frnd_counter;
err = friend_cred_set(cred, 0, sub->keys[0].net);
if (err) {
friend_cred_clear(cred);
return NULL;
}
if (sub->kr_flag) {
err = friend_cred_set(cred, 1, sub->keys[1].net);
if (err) {
friend_cred_clear(cred);
return NULL;
}
}
return cred;
}
void friend_cred_clear(struct friend_cred *cred)
{
cred->net_idx = BLE_MESH_KEY_UNUSED;
cred->addr = BLE_MESH_ADDR_UNASSIGNED;
cred->lpn_counter = 0U;
cred->frnd_counter = 0U;
(void)memset(cred->cred, 0, sizeof(cred->cred));
}
int friend_cred_del(uint16_t net_idx, uint16_t addr)
{
int i;
for (i = 0; i < ARRAY_SIZE(friend_cred); i++) {
struct friend_cred *cred = &friend_cred[i];
if (cred->addr == addr && cred->net_idx == net_idx) {
friend_cred_clear(cred);
return 0;
}
}
return -ENOENT;
}
int friend_cred_get(struct bt_mesh_subnet *sub, uint16_t addr, uint8_t *nid,
const uint8_t **enc, const uint8_t **priv)
{
int i;
BT_DBG("net_idx 0x%04x addr 0x%04x", sub->net_idx, addr);
for (i = 0; i < ARRAY_SIZE(friend_cred); i++) {
struct friend_cred *cred = &friend_cred[i];
if (cred->net_idx != sub->net_idx) {
continue;
}
if (addr != BLE_MESH_ADDR_UNASSIGNED && cred->addr != addr) {
continue;
}
if (nid) {
*nid = cred->cred[sub->kr_flag].nid;
}
if (enc) {
*enc = cred->cred[sub->kr_flag].enc;
}
if (priv) {
*priv = cred->cred[sub->kr_flag].privacy;
}
return 0;
}
return -ENOENT;
}
#else
int friend_cred_get(struct bt_mesh_subnet *sub, uint16_t addr, uint8_t *nid,
const uint8_t **enc, const uint8_t **priv)
{
return -ENOENT;
}
#endif /* FRIEND || LOW_POWER */
uint8_t bt_mesh_net_flags(struct bt_mesh_subnet *sub)
{
uint8_t flags = 0x00;
if (sub && sub->kr_flag) {
flags |= BLE_MESH_NET_FLAG_KR;
}
if (bt_mesh_atomic_test_bit(bt_mesh.flags, BLE_MESH_IVU_IN_PROGRESS)) {
flags |= BLE_MESH_NET_FLAG_IVU;
}
return flags;
}
int bt_mesh_net_secure_beacon_update(struct bt_mesh_subnet *sub)
{
uint8_t flags = bt_mesh_net_flags(sub);
struct bt_mesh_subnet_keys *keys = NULL;
if (sub->kr_flag) {
BT_DBG("NetIndex %u Using new key", sub->net_idx);
keys = &sub->keys[1];
} else {
BT_DBG("NetIndex %u Using current key", sub->net_idx);
keys = &sub->keys[0];
}
BT_DBG("flags 0x%02x, IVI 0x%08x", flags, bt_mesh.iv_index);
return bt_mesh_secure_beacon_auth(keys->beacon, flags, keys->net_id,
bt_mesh.iv_index, sub->auth);
}
int bt_mesh_net_create(uint16_t idx, uint8_t flags, const uint8_t key[16],
uint32_t iv_index)
{
struct bt_mesh_subnet *sub = NULL;
int err = 0;
BT_DBG("idx %u flags 0x%02x iv_index %u", idx, flags, iv_index);
BT_DBG("NetKey %s", bt_hex(key, 16));
(void)memset(msg_cache, 0, sizeof(msg_cache));
msg_cache_next = 0U;
sub = &bt_mesh.sub[0];
sub->kr_flag = BLE_MESH_KEY_REFRESH(flags);
if (sub->kr_flag) {
err = bt_mesh_net_keys_create(&sub->keys[1], key);
if (err) {
return -EIO;
}
sub->kr_phase = BLE_MESH_KR_PHASE_2;
} else {
err = bt_mesh_net_keys_create(&sub->keys[0], key);
if (err) {
return -EIO;
}
}
sub->net_idx = idx;
if (IS_ENABLED(CONFIG_BLE_MESH_GATT_PROXY_SERVER)) {
sub->node_id = BLE_MESH_NODE_IDENTITY_STOPPED;
} else {
sub->node_id = BLE_MESH_NODE_IDENTITY_NOT_SUPPORTED;
#if CONFIG_BLE_MESH_PRB_SRV
sub->private_node_id = BLE_MESH_PRIVATE_NODE_IDENTITY_NOT_SUPPORTED;
#endif
}
bt_mesh.iv_index = iv_index;
bt_mesh_atomic_set_bit_to(bt_mesh.flags, BLE_MESH_IVU_IN_PROGRESS,
BLE_MESH_IV_UPDATE(flags));
/* Set minimum required hours, since the 96-hour minimum requirement
* doesn't apply straight after provisioning (since we can't know how
* long has actually passed since the network changed its state).
*/
bt_mesh.ivu_duration = BLE_MESH_IVU_MIN_HOURS;
/* Make sure we have valid beacon data to be sent */
bt_mesh_net_secure_beacon_update(sub);
#if CONFIG_BLE_MESH_DF_SRV
return bt_mesh_directed_forwarding_sub_init(sub);
#endif
return 0;
}
void bt_mesh_net_revoke_keys(struct bt_mesh_subnet *sub)
{
int i;
BT_DBG("idx 0x%04x", sub->net_idx);
memcpy(&sub->keys[0], &sub->keys[1], sizeof(sub->keys[0]));
if (IS_ENABLED(CONFIG_BLE_MESH_SETTINGS)) {
BT_DBG("Store updated NetKey persistently");
bt_mesh_store_subnet(sub);
}
for (i = 0; i < ARRAY_SIZE(bt_mesh.app_keys); i++) {
struct bt_mesh_app_key *key = &bt_mesh.app_keys[i];
if (key->net_idx != sub->net_idx || !key->updated) {
continue;
}
memcpy(&key->keys[0], &key->keys[1], sizeof(key->keys[0]));
key->updated = false;
if (IS_ENABLED(CONFIG_BLE_MESH_SETTINGS)) {
BT_DBG("Store updated AppKey persistently");
bt_mesh_store_app_key(key);
}
}
}
bool bt_mesh_kr_update(struct bt_mesh_subnet *sub, uint8_t new_kr, bool new_key)
{
if (new_kr != sub->kr_flag && sub->kr_phase == BLE_MESH_KR_NORMAL) {
BT_WARN("KR change in normal operation. Are we blacklisted?");
return false;
}
sub->kr_flag = new_kr;
if (sub->kr_flag) {
if (sub->kr_phase == BLE_MESH_KR_PHASE_1) {
BT_INFO("Phase 1 -> Phase 2");
sub->kr_phase = BLE_MESH_KR_PHASE_2;
if (IS_ENABLED(CONFIG_BLE_MESH_SETTINGS)) {
BT_DBG("Storing kr phase persistently");
bt_mesh_store_subnet(sub);
}
return true;
}
} else {
switch (sub->kr_phase) {
case BLE_MESH_KR_PHASE_1:
if (!new_key) {
/* Ignore */
break;
}
/* Upon receiving a Secure Network beacon with the KR flag set
* to 0 using the new NetKey in Phase 1, the node shall
* immediately transition to Phase 3, which effectively skips
* Phase 2.
*
* Intentional fall-through.
*/
case BLE_MESH_KR_PHASE_2:
BT_INFO("KR Phase 0x%02x -> Normal", sub->kr_phase);
#if CONFIG_BLE_MESH_PRB_SRV
/* In this case, consider that kr_flag has changed, so
* need to modify the content of the random field.
*/
bt_mesh_private_beacon_update_random(sub);
#endif
sub->kr_phase = BLE_MESH_KR_NORMAL;
bt_mesh_net_revoke_keys(sub);
if (IS_ENABLED(CONFIG_BLE_MESH_LOW_POWER) ||
IS_ENABLED(CONFIG_BLE_MESH_FRIEND)) {
friend_cred_refresh(sub->net_idx);
}
return true;
}
}
return false;
}
#if CONFIG_BLE_MESH_IV_UPDATE_TEST
void bt_mesh_iv_update_test(bool enable)
{
bt_mesh_atomic_set_bit_to(bt_mesh.flags, BLE_MESH_IVU_TEST, enable);
/* Reset the duration variable - needed for some PTS tests */
bt_mesh.ivu_duration = 0U;
}
bool bt_mesh_iv_update(void)
{
if (!bt_mesh_is_provisioned()) {
BT_ERR("Not yet provisioned");
return false;
}
if (bt_mesh_atomic_test_bit(bt_mesh.flags, BLE_MESH_IVU_IN_PROGRESS)) {
bt_mesh_net_iv_update(bt_mesh.iv_index, false);
} else {
bt_mesh_net_iv_update(bt_mesh.iv_index + 1, true);
}
bt_mesh_net_sec_update(NULL);
return bt_mesh_atomic_test_bit(bt_mesh.flags, BLE_MESH_IVU_IN_PROGRESS);
}
#endif /* CONFIG_BLE_MESH_IV_UPDATE_TEST */
/* Used for sending immediate beacons to Friend queues and GATT clients */
void bt_mesh_net_sec_update(struct bt_mesh_subnet *sub)
{
if (IS_ENABLED(CONFIG_BLE_MESH_FRIEND)) {
bt_mesh_friend_sec_update(sub ? sub->net_idx : BLE_MESH_KEY_ANY);
}
if (IS_ENABLED(CONFIG_BLE_MESH_GATT_PROXY_SERVER) &&
(bt_mesh_gatt_proxy_get() == BLE_MESH_GATT_PROXY_ENABLED
#if CONFIG_BLE_MESH_PRB_SRV
|| bt_mesh_private_gatt_proxy_state_get() == BLE_MESH_PRIVATE_GATT_PROXY_ENABLED
#endif
)) {
bt_mesh_proxy_server_beacon_send(sub);
}
}
bool bt_mesh_net_iv_update(uint32_t iv_index, bool iv_update)
{
int i;
/* If a node in Normal Operation receives a Secure Network beacon or
* a Mesh Private beacon with an IV index less than the last known
* IV Index or greater than the last known IV Index + 42, the Secure
* Network beacon or the Mesh Private beacon shall be ignored.
*/
if (iv_index < bt_mesh.iv_index ||
iv_index > bt_mesh.iv_index + 42) {
BT_ERR("IV Index out of sync: 0x%08x != 0x%08x",
iv_index, bt_mesh.iv_index);
return false;
}
if (bt_mesh_atomic_test_bit(bt_mesh.flags, BLE_MESH_IVU_IN_PROGRESS)) {
/* We're currently in IV Update mode */
if (iv_index >= bt_mesh.iv_index + 1) {
BT_WARN("Performing IV Index Recovery");
(void)memset(bt_mesh.rpl, 0, sizeof(bt_mesh.rpl));
bt_mesh.iv_index = iv_index;
bt_mesh.seq = 0U;
goto do_update;
}
if (iv_update) {
/* Nothing to do */
BT_DBG("Already in IV Update in Progress state");
return false;
}
} else {
/* We're currently in Normal mode */
if (iv_index == bt_mesh.iv_index) {
BT_DBG("Same IV Index in normal mode");
return false;
}
/* If a node in Normal Operation receives a Secure Network beacon
* or a Mesh Private beacon with an IV index greater than the
* last known IV Index + 1, it may initiate an IV Index Recovery
* procedure see Section 3.10.6
*/
if ((iv_index > bt_mesh.iv_index + 1)
#if CONFIG_BLE_MESH_IVU_RECOVERY_IVI
|| (iv_index == bt_mesh.iv_index + 1 && !iv_update)
#endif
) {
BT_WARN("Performing IV Index Recovery");
(void)memset(bt_mesh.rpl, 0, sizeof(bt_mesh.rpl));
bt_mesh.iv_index = iv_index;
bt_mesh.seq = 0U;
goto do_update;
}
/* If a node in Normal Operation receives a Secure Network beacon
* or a Mesh Private beacon with an IV index equal to the last known
* IV index+1 and the IV Update Flag set to 0, the node may update
* its IV without going to the IV Update in Progress state, or it may
* initiate an IV Index Recovery procedure(Section 3.10.6), or it may
* ignore the Secure Network beacon or the Mesh Private beacon.
*/
#if !CONFIG_BLE_MESH_IVU_RECOVERY_IVI
if (iv_index == bt_mesh.iv_index + 1 && !iv_update) {
BT_WARN("Ignoring new index in normal mode");
return false;
}
#endif
if (!iv_update) {
/* Nothing to do */
BT_DBG("Already in Normal state");
return false;
}
}
if (!(IS_ENABLED(CONFIG_BLE_MESH_IV_UPDATE_TEST) &&
bt_mesh_atomic_test_bit(bt_mesh.flags, BLE_MESH_IVU_TEST))) {
if (bt_mesh.ivu_duration < BLE_MESH_IVU_MIN_HOURS) {
BT_WARN("IV Update before minimum duration");
return false;
}
}
/* Defer change to Normal Operation if there are pending acks */
if (!iv_update && bt_mesh_tx_in_progress()) {
BT_WARN("IV Update deferred because of pending transfer");
bt_mesh_atomic_set_bit(bt_mesh.flags, BLE_MESH_IVU_PENDING);
return false;
}
do_update:
bt_mesh_atomic_set_bit_to(bt_mesh.flags, BLE_MESH_IVU_IN_PROGRESS, iv_update);
bt_mesh.ivu_duration = 0U;
if (iv_update) {
bt_mesh.iv_index = iv_index;
BT_INFO("IV Update state entered. New index 0x%08x",
bt_mesh.iv_index);
bt_mesh_rpl_update();
} else {
BT_INFO("Normal mode entered");
bt_mesh.seq = 0U;
}
k_delayed_work_submit(&bt_mesh.ivu_timer, BLE_MESH_IVU_TIMEOUT);
size_t subnet_size = bt_mesh_rx_netkey_size();
for (i = 0; i < subnet_size; i++) {
struct bt_mesh_subnet *sub = bt_mesh_rx_netkey_get(i);
if (sub && sub->net_idx != BLE_MESH_KEY_UNUSED) {
bt_mesh_net_secure_beacon_update(sub);
}
}
if (IS_ENABLED(CONFIG_BLE_MESH_SETTINGS)) {
bt_mesh_store_iv(false);
}
return true;
}
bool bt_mesh_primary_subnet_exist(void)
{
if (bt_mesh_subnet_get(BLE_MESH_KEY_PRIMARY)) {
return true;
}
return false;
}
uint32_t bt_mesh_next_seq(void)
{
uint32_t seq = bt_mesh.seq++;
if (IS_ENABLED(CONFIG_BLE_MESH_SETTINGS)) {
bt_mesh_store_seq();
}
if (!bt_mesh_atomic_test_bit(bt_mesh.flags, BLE_MESH_IVU_IN_PROGRESS) &&
bt_mesh.seq > IV_UPDATE_SEQ_LIMIT &&
bt_mesh_primary_subnet_exist()) {
bt_mesh_beacon_ivu_initiator(true);
bt_mesh_net_iv_update(bt_mesh.iv_index + 1, true);
bt_mesh_net_sec_update(NULL);
}
return seq;
}
int bt_mesh_net_resend(struct bt_mesh_subnet *sub, struct net_buf *buf,
bool new_key, uint8_t *tx_cred, uint8_t tx_tag,
const struct bt_mesh_send_cb *cb, void *cb_data)
{
const uint8_t *enc = NULL, *priv = NULL;
uint32_t seq = 0U;
uint16_t dst = 0U;
int err = 0;
BT_DBG("net_idx 0x%04x new_key %u len %u", sub->net_idx, new_key,
buf->len);
/* Previously when resending the segments, only managed flooding
* security credentials will be used.
* Now for the segments retransmission, try to get the security
* credentials based on the parameters "tx_cred" and "tag".
*
* Note:
* Use "tag" here in case the friendship is terminated, which will
* cause the friendship security credentials are deleted.
*
* TODO:
* Potential issue here, if the subnet is deleted, exception (on
* Provisioner) will happen.
*/
if (IS_ENABLED(CONFIG_BLE_MESH_LOW_POWER) &&
*tx_cred == BLE_MESH_FRIENDSHIP_CRED) {
err = friend_cred_get(sub, BLE_MESH_ADDR_UNASSIGNED, NULL, &enc, &priv);
if (err) {
/* If tagged with immutable-credentials, then no
* falling back should happen.
*/
if (bt_mesh_tag_immutable_cred(tx_tag)) {
BT_ERR("Resend, no friendship credentials found");
return err;
}
BT_WARN("Falling back to managed flooding credentials");
*tx_cred = BLE_MESH_FLOODING_CRED;
enc = sub->keys[new_key].enc;
priv = sub->keys[new_key].privacy;
}
}
#if CONFIG_BLE_MESH_DF_SRV
else if (*tx_cred == BLE_MESH_DIRECTED_CRED) {
enc = sub->keys[new_key].direct_enc;
priv = sub->keys[new_key].direct_privacy;
}
#endif /* CONFIG_BLE_MESH_DF_SRV */
else {
enc = sub->keys[new_key].enc;
priv = sub->keys[new_key].privacy;
}
err = bt_mesh_net_obfuscate(buf->data, BLE_MESH_NET_IVI_TX, priv);
if (err) {
BT_ERR("De-obfuscate failed (err %d)", err);
return err;
}
err = bt_mesh_net_decrypt(enc, &buf->b, BLE_MESH_NET_IVI_TX, false, false);
if (err) {
BT_ERR("Decrypt failed (err %d)", err);
return err;
}
/* Update with a new sequence number */
seq = bt_mesh_next_seq();
sys_put_be24(seq, &buf->data[2]);
/* Get destination, in case it's a proxy client */
dst = BLE_MESH_NET_HDR_DST(buf->data);
err = bt_mesh_net_encrypt(enc, &buf->b, BLE_MESH_NET_IVI_TX, false, false);
if (err) {
BT_ERR("Encrypt failed (err %d)", err);
return err;
}
err = bt_mesh_net_obfuscate(buf->data, BLE_MESH_NET_IVI_TX, priv);
if (err) {
BT_ERR("Obfuscate failed (err %d)", err);
return err;
}
if (IS_ENABLED(CONFIG_BLE_MESH_GATT_PROXY_SERVER) &&
bt_mesh_proxy_server_relay(&buf->b, dst) &&
BLE_MESH_ADDR_IS_UNICAST(dst)) {
send_cb_finalize(cb, cb_data);
return 0;
}
if (IS_ENABLED(CONFIG_BLE_MESH_GATT_PROXY_CLIENT) &&
bt_mesh_proxy_client_relay(&buf->b, dst)) {
send_cb_finalize(cb, cb_data);
return 0;
}
bt_mesh_adv_send(buf, BLE_MESH_ADV(buf)->xmit, cb, cb_data);
return 0;
}
static void bt_mesh_net_local(void)
{
struct net_buf *buf = NULL;
while ((buf = net_buf_slist_get(&bt_mesh.local_queue))) {
BT_DBG("len %u: %s", buf->len, bt_hex(buf->data, buf->len));
bt_mesh_net_recv(&buf->b, 0, BLE_MESH_NET_IF_LOCAL);
net_buf_unref(buf);
}
}
int bt_mesh_net_encode(struct bt_mesh_net_tx *tx, struct net_buf_simple *buf,
bool proxy)
{
const bool ctl = (tx->ctx->app_idx == BLE_MESH_KEY_UNUSED);
const uint8_t *enc = NULL, *priv = NULL;
uint8_t nid = 0U;
int err = 0;
if (ctl && net_buf_simple_tailroom(buf) < BLE_MESH_MIC_LONG) {
BT_ERR("Insufficient MIC space for CTL PDU");
return -EINVAL;
}
if (net_buf_simple_tailroom(buf) < BLE_MESH_MIC_SHORT) {
BT_ERR("Insufficient MIC space for PDU");
return -EINVAL;
}
BT_DBG("src 0x%04x dst 0x%04x ctl %u seq 0x%06x",
tx->src, tx->ctx->addr, ctl, bt_mesh.seq);
net_buf_simple_push_be16(buf, tx->ctx->addr);
net_buf_simple_push_be16(buf, tx->src);
net_buf_simple_push_be24(buf, bt_mesh_next_seq());
if (ctl) {
net_buf_simple_push_u8(buf, tx->ctx->send_ttl | 0x80);
} else {
net_buf_simple_push_u8(buf, tx->ctx->send_ttl);
}
BT_INFO("Use security credentials 0x%02x, proxy %d", tx->ctx->send_cred, proxy);
if (IS_ENABLED(CONFIG_BLE_MESH_LOW_POWER) &&
tx->ctx->send_cred == BLE_MESH_FRIENDSHIP_CRED) {
err = friend_cred_get(tx->sub, BLE_MESH_ADDR_UNASSIGNED,
&nid, &enc, &priv);
if (err) {
/* If tagged with immutable-credentials, then no
* falling back should happen.
*/
if (bt_mesh_tag_immutable_cred(tx->ctx->send_tag)) {
BT_ERR("No friendship credentials found");
return err;
}
BT_WARN("Falling back to managed flooding credentials");
tx->ctx->send_cred = BLE_MESH_FLOODING_CRED;
nid = tx->sub->keys[tx->sub->kr_flag].nid;
enc = tx->sub->keys[tx->sub->kr_flag].enc;
priv = tx->sub->keys[tx->sub->kr_flag].privacy;
}
}
#if CONFIG_BLE_MESH_DF_SRV
else if (tx->ctx->send_cred == BLE_MESH_DIRECTED_CRED) {
nid = tx->sub->keys[tx->sub->kr_flag].direct_nid;
enc = tx->sub->keys[tx->sub->kr_flag].direct_enc;
priv = tx->sub->keys[tx->sub->kr_flag].direct_privacy;
}
#endif /* CONFIG_BLE_MESH_DF_SRV */
else {
tx->ctx->send_cred = BLE_MESH_FLOODING_CRED;
nid = tx->sub->keys[tx->sub->kr_flag].nid;
enc = tx->sub->keys[tx->sub->kr_flag].enc;
priv = tx->sub->keys[tx->sub->kr_flag].privacy;
}
net_buf_simple_push_u8(buf, (nid | (BLE_MESH_NET_IVI_TX & 1) << 7));
err = bt_mesh_net_encrypt(enc, buf, BLE_MESH_NET_IVI_TX, proxy, false);
if (err) {
return err;
}
return bt_mesh_net_obfuscate(buf->data, BLE_MESH_NET_IVI_TX, priv);
}
#if !CONFIG_BLE_MESH_V11_SUPPORT
static void bt_mesh_net_adv_xmit_update(struct bt_mesh_net_tx *tx)
{
/* When transmitting a Network PDU that is tagged as friendship,
* the Advertising Bearer Network Interface shall transmit the
* Network PDU over the advertising bearer only once.
*
* Note: Currently when transmitting a packet with the friendship
* credentials used, the message flow will not reach here. It
* will be enqueued into the friend queue in transport.c, and
* waited to be sent.
*/
if (bt_mesh_tag_friendship(tx->ctx->send_tag)) {
tx->xmit = BLE_MESH_TRANSMIT(0, BLE_MESH_TRANSMIT_INT(bt_mesh_net_transmit_get()));
return;
}
if (bt_mesh_tag_relay(tx->ctx->send_tag)) {
tx->xmit = bt_mesh_relay_retransmit_get();
} else {
tx->xmit = bt_mesh_net_transmit_get();
}
return;
}
#endif /* !CONFIG_BLE_MESH_V11_SUPPORT */
int bt_mesh_net_send(struct bt_mesh_net_tx *tx, struct net_buf *buf,
const struct bt_mesh_send_cb *cb, void *cb_data)
{
uint8_t bearer = BLE_MESH_ALL_BEARERS;
int err = 0;
BT_DBG("src 0x%04x dst 0x%04x len %u headroom %u tailroom %u",
tx->src, tx->ctx->addr, buf->len, net_buf_headroom(buf),
net_buf_tailroom(buf));
BT_DBG("Payload len %u: %s", buf->len, bt_hex(buf->data, buf->len));
BT_DBG("Seq 0x%06x", bt_mesh.seq);
if (tx->ctx->send_ttl == BLE_MESH_TTL_DEFAULT) {
tx->ctx->send_ttl = bt_mesh_default_ttl_get();
}
#if 0
/* The output filter of the interface connected to advertising
* or GATT bearers shall drop all messages with the TTL value
* set to 1 unless they contain a network PDU that is tagged
* as relay.
*/
if (tx->ctx->send_ttl == 1U &&
!bt_mesh_tag_relay(tx->ctx->send_tag)) {
BT_WARN("Ignore PDU with TTL=1 but not tagged as relay");
err = -EIO;
goto done;
}
#endif
/* Spec:
* If the message security material is not set by the network
* layer or any higher layer, the message shall be secured
* using the managed flooding security credentials.
*
* Note:
* Currently no need to add any code for this here, because if
* the security material is not set, the "tx->ctx->send_cred"
* will be initialized to 0x00, which will be used as managed
* flooding security credentials.
*/
#if CONFIG_BLE_MESH_DF_SRV
bt_mesh_update_net_send_cred(tx, &bearer);
#endif /* CONFIG_BLE_MESH_DF_SRV */
err = bt_mesh_net_encode(tx, &buf->b, false);
if (err) {
goto done;
}
#if CONFIG_BLE_MESH_SELF_TEST
if (net_pdu_test_cb) {
net_pdu_test_cb(buf->data, buf->len);
goto done;
}
#endif /* CONFIG_BLE_MESH_SELF_TEST */
/* Deliver to GATT Proxy Clients if necessary. Mesh spec 3.4.5.2:
* "The output filter of the interface connected to advertising or
* GATT bearers shall drop all messages with the TTL value set to
* 1 unless they contain a network PDU that is tagged as relay."
*
* "The output filter of the interface connected to the GATT bearer
* shall drop all messages secured using the friendship security
* credentials."
*/
if (IS_ENABLED(CONFIG_BLE_MESH_GATT_PROXY_SERVER) &&
(bearer & BLE_MESH_GATT_BEARER) &&
(tx->ctx->send_ttl != 1U ||
bt_mesh_tag_relay(tx->ctx->send_tag)) &&
tx->ctx->send_cred != BLE_MESH_FRIENDSHIP_CRED) {
if (bt_mesh_proxy_server_relay(&buf->b, tx->ctx->addr) &&
BLE_MESH_ADDR_IS_UNICAST(tx->ctx->addr)) {
/* Notify completion if this only went
* through the Mesh Proxy.
*/
if ((bearer & (~BLE_MESH_GATT_BEARER)) == 0) {
send_cb_finalize(cb, cb_data);
err = 0;
goto done;
}
}
}
if (IS_ENABLED(CONFIG_BLE_MESH_GATT_PROXY_CLIENT) &&
(bearer & BLE_MESH_GATT_BEARER) &&
(tx->ctx->send_ttl != 1U ||
bt_mesh_tag_relay(tx->ctx->send_tag)) &&
tx->ctx->send_cred != BLE_MESH_FRIENDSHIP_CRED) {
if (bt_mesh_proxy_client_relay(&buf->b, tx->ctx->addr)) {
/* If Proxy Client succeeds to send messages with GATT bearer,
* we can directly finish here. And if not, which means no
* connection has been created with Proxy Client, here we will
* use advertising bearer for the messages.
*/
send_cb_finalize(cb, cb_data);
err = 0;
goto done;
}
}
/* Deliver to local network interface if necessary */
if (((IS_ENABLED(CONFIG_BLE_MESH_NODE) && bt_mesh_is_provisioned()) ||
(IS_ENABLED(CONFIG_BLE_MESH_PROVISIONER) && bt_mesh_is_provisioner_en())) &&
(bt_mesh_fixed_group_match(tx->ctx->addr) || bt_mesh_elem_find(tx->ctx->addr))) {
/**
* If the target address isn't a unicast address, then the callback function
* will be called by `adv task` in place of here, to avoid the callback function
* being called twice.
* See BLEMESH24-76 for more details.
*/
if (BLE_MESH_ADDR_IS_UNICAST(tx->ctx->addr)) {
if (cb && cb->start) {
cb->start(0, 0, cb_data);
}
net_buf_slist_put(&bt_mesh.local_queue, net_buf_ref(buf));
if (cb && cb->end) {
cb->end(0, cb_data);
}
bt_mesh_net_local();
err = 0;
goto done;
} else {
net_buf_slist_put(&bt_mesh.local_queue, net_buf_ref(buf));
bt_mesh_net_local();
}
err = 0;
}
if ((bearer & BLE_MESH_ADV_BEARER) &&
(tx->ctx->send_ttl != 1U || bt_mesh_tag_relay(tx->ctx->send_tag))) {
/* Deliver to the advertising network interface. Mesh spec
* 3.4.5.2: "The output filter of the interface connected to
* advertising or GATT bearers shall drop all messages with
* TTL value set to 1."
* Spec v1.1 adds additional condition:
* "unless they contain a network PDU that is tagged as relay"
*
* "tx->xmit" has already been initialized in the access.c
* (i.e. bt_mesh_model_send() & bt_mesh_model_publish()).
* Here xmit may needs to be updated according Mesh spec 3.4.6.
*/
bt_mesh_net_adv_xmit_update(tx);
BT_INFO("Network PDU, count %d, interval %d",
BLE_MESH_TRANSMIT_COUNT(tx->xmit), BLE_MESH_TRANSMIT_INT(tx->xmit));
bt_mesh_adv_send(buf, tx->xmit, cb, cb_data);
err = 0;
goto done;
}
BT_WARN("Not sent, src 0x%04x, dst 0x%04x, ttl %d, cred 0x%02x, tag 0x%02x",
tx->src, tx->ctx->addr, tx->ctx->send_ttl, tx->ctx->send_cred,
tx->ctx->send_tag);
err = -EIO;
done:
net_buf_unref(buf);
return err;
}
static bool auth_match(struct bt_mesh_subnet_keys *keys,
const uint8_t net_id[8], uint8_t flags,
uint32_t iv_index, const uint8_t auth[8])
{
uint8_t net_auth[8] = {0};
if (memcmp(net_id, keys->net_id, 8)) {
return false;
}
bt_mesh_secure_beacon_auth(keys->beacon, flags, keys->net_id, iv_index,
net_auth);
if (memcmp(auth, net_auth, 8)) {
BT_WARN("Authentication Value %s != %s",
bt_hex(auth, 8), bt_hex(net_auth, 8));
return false;
}
return true;
}
struct bt_mesh_subnet *bt_mesh_subnet_find_with_snb(const uint8_t net_id[8], uint8_t flags,
uint32_t iv_index, const uint8_t auth[8],
bool *new_key)
{
size_t subnet_size = 0U;
int i;
subnet_size = bt_mesh_rx_netkey_size();
for (i = 0; i < subnet_size; i++) {
struct bt_mesh_subnet *sub = bt_mesh_rx_netkey_get(i);
if (sub == NULL || sub->net_idx == BLE_MESH_KEY_UNUSED) {
continue;
}
if (auth_match(&sub->keys[0], net_id, flags, iv_index, auth)) {
*new_key = false;
return sub;
}
if (sub->kr_phase == BLE_MESH_KR_NORMAL) {
continue;
}
if (auth_match(&sub->keys[1], net_id, flags, iv_index, auth)) {
*new_key = true;
return sub;
}
}
return NULL;
}
int net_decrypt(struct bt_mesh_subnet *sub, const uint8_t *enc,
const uint8_t *priv, const uint8_t *data,
size_t data_len, struct bt_mesh_net_rx *rx,
struct net_buf_simple *buf)
{
BT_DBG("NID 0x%02x net_idx 0x%04x", BLE_MESH_NET_HDR_NID(data), sub->net_idx);
BT_DBG("IVI %u net->iv_index 0x%08x", BLE_MESH_NET_HDR_IVI(data), bt_mesh.iv_index);
rx->old_iv = (BLE_MESH_NET_HDR_IVI(data) != (bt_mesh.iv_index & 0x01));
net_buf_simple_reset(buf);
memcpy(net_buf_simple_add(buf, data_len), data, data_len);
if (bt_mesh_net_obfuscate(buf->data, BLE_MESH_NET_IVI_RX(rx), priv)) {
return -ENOENT;
}
rx->ctx.addr = BLE_MESH_NET_HDR_SRC(buf->data);
if (!BLE_MESH_ADDR_IS_UNICAST(rx->ctx.addr)) {
BT_DBG("Ignoring non-unicast src addr 0x%04x", rx->ctx.addr);
return -EINVAL;
}
if (rx->net_if == BLE_MESH_NET_IF_ADV && msg_cache_match(rx, buf)) {
BT_DBG("Duplicate found in Network Message Cache");
return -EALREADY;
}
BT_DBG("src 0x%04x", rx->ctx.addr);
if (IS_ENABLED(CONFIG_BLE_MESH_PROXY) &&
rx->net_if == BLE_MESH_NET_IF_PROXY_CFG) {
return bt_mesh_net_decrypt(enc, buf, BLE_MESH_NET_IVI_RX(rx),
true, false);
}
return bt_mesh_net_decrypt(enc, buf, BLE_MESH_NET_IVI_RX(rx), false, false);
}
#if (CONFIG_BLE_MESH_LOW_POWER || CONFIG_BLE_MESH_FRIEND)
static int friend_decrypt(struct bt_mesh_subnet *sub, const uint8_t *data,
size_t data_len, struct bt_mesh_net_rx *rx,
struct net_buf_simple *buf)
{
int i;
BT_DBG("NID 0x%02x net_idx 0x%04x", BLE_MESH_NET_HDR_NID(data), sub->net_idx);
for (i = 0; i < ARRAY_SIZE(friend_cred); i++) {
struct friend_cred *cred = &friend_cred[i];
if (cred->net_idx != sub->net_idx) {
continue;
}
if (BLE_MESH_NET_HDR_NID(data) == cred->cred[0].nid &&
!net_decrypt(sub, cred->cred[0].enc, cred->cred[0].privacy,
data, data_len, rx, buf)) {
return 0;
}
if (sub->kr_phase == BLE_MESH_KR_NORMAL) {
continue;
}
if (BLE_MESH_NET_HDR_NID(data) == cred->cred[1].nid &&
!net_decrypt(sub, cred->cred[1].enc, cred->cred[1].privacy,
data, data_len, rx, buf)) {
rx->new_key = 1U;
return 0;
}
}
return -ENOENT;
}
#endif /* (CONFIG_BLE_MESH_LOW_POWER || CONFIG_BLE_MESH_FRIEND) */
static int flooding_decrypt(struct bt_mesh_subnet *sub, const uint8_t *data,
size_t data_len, struct bt_mesh_net_rx *rx,
struct net_buf_simple *buf)
{
BT_DBG("NID 0x%02x net_idx 0x%04x", BLE_MESH_NET_HDR_NID(data), sub->net_idx);
if (BLE_MESH_NET_HDR_NID(data) == sub->keys[0].nid &&
!net_decrypt(sub, sub->keys[0].enc, sub->keys[0].privacy,
data, data_len, rx, buf)) {
return 0;
}
if (sub->kr_phase == BLE_MESH_KR_NORMAL) {
return -ENOENT;
}
if (BLE_MESH_NET_HDR_NID(data) == sub->keys[1].nid &&
!net_decrypt(sub, sub->keys[1].enc, sub->keys[1].privacy,
data, data_len, rx, buf)) {
rx->new_key = 1U;
return 0;
}
return -ENOENT;
}
static bool net_find_and_decrypt(const uint8_t *data, size_t data_len,
struct bt_mesh_net_rx *rx,
struct net_buf_simple *buf)
{
struct bt_mesh_subnet *sub = NULL;
size_t array_size = 0U;
int i;
array_size = bt_mesh_rx_netkey_size();
for (i = 0; i < array_size; i++) {
sub = bt_mesh_rx_netkey_get(i);
if (!sub) {
BT_DBG("Subnet not found");
continue;
}
if (sub->net_idx == BLE_MESH_KEY_UNUSED) {
continue;
}
#if CONFIG_BLE_MESH_BRC_SRV
sub->sbr_net_idx = BLE_MESH_KEY_UNUSED;
#endif
#if (CONFIG_BLE_MESH_LOW_POWER || CONFIG_BLE_MESH_FRIEND)
if (!friend_decrypt(sub, data, data_len, rx, buf)) {
rx->ctx.recv_cred = BLE_MESH_FRIENDSHIP_CRED;
rx->ctx.net_idx = sub->net_idx;
rx->sub = sub;
return true;
}
#endif
#if CONFIG_BLE_MESH_DF_SRV
if (!bt_mesh_directed_decrypt(sub, data, data_len, rx, buf)) {
rx->ctx.recv_cred = BLE_MESH_DIRECTED_CRED;
rx->ctx.net_idx = sub->net_idx;
rx->sub = sub;
return true;
}
#endif /* CONFIG_BLE_MESH_DF_SRV */
if (!flooding_decrypt(sub, data, data_len, rx, buf)) {
rx->ctx.recv_cred = BLE_MESH_FLOODING_CRED;
rx->ctx.net_idx = sub->net_idx;
rx->sub = sub;
return true;
}
}
return false;
}
/* Relaying from advertising to the advertising bearer should only happen
* if the Relay state is set to enabled. Locally originated packets always
* get sent to the advertising bearer. If the packet came in through GATT,
* then we should only relay it if the GATT Proxy state is enabled.
*/
static bool relay_to_adv(enum bt_mesh_net_if net_if)
{
switch (net_if) {
case BLE_MESH_NET_IF_LOCAL:
return true;
case BLE_MESH_NET_IF_ADV:
return (bt_mesh_relay_get() == BLE_MESH_RELAY_ENABLED);
case BLE_MESH_NET_IF_PROXY:
return (bt_mesh_gatt_proxy_get() == BLE_MESH_GATT_PROXY_ENABLED
#if CONFIG_BLE_MESH_PRB_SRV
|| bt_mesh_private_gatt_proxy_state_get() == BLE_MESH_PRIVATE_GATT_PROXY_ENABLED
#endif
);
default:
return false;
}
}
#if !CONFIG_BLE_MESH_V11_SUPPORT
static uint8_t net_retransmission_adv(struct bt_mesh_net_rx *rx,
uint8_t *cred, uint8_t *tag)
{
if (rx->ctx.recv_cred == BLE_MESH_FLOODING_CRED) {
uint8_t bearer = BLE_MESH_NONE_BEARER;
/* Inbound bearer: ADV;
* Inbound Security Material: managed flooding;
*/
/* Condition: Relay is enabled. */
if (IS_ENABLED(CONFIG_BLE_MESH_RELAY) &&
bt_mesh_relay_get() == BLE_MESH_RELAY_ENABLED) {
bearer |= BLE_MESH_ADV_BEARER;
*cred = BLE_MESH_FLOODING_CRED;
/* Additional action: Tag as relay */
*tag |= BLE_MESH_TAG_RELAY;
}
/* Condition: Proxy is enabled. */
if (IS_ENABLED(CONFIG_BLE_MESH_GATT_PROXY_SERVER) &&
bt_mesh_gatt_proxy_get() == BLE_MESH_GATT_PROXY_ENABLED) {
bearer |= BLE_MESH_GATT_BEARER;
*cred = BLE_MESH_FLOODING_CRED;
}
return bearer;
}
if (rx->ctx.recv_cred == BLE_MESH_FRIENDSHIP_CRED &&
IS_ENABLED(CONFIG_BLE_MESH_FRIEND) &&
bt_mesh_friend_get() == BLE_MESH_FRIEND_ENABLED) {
/* Condition: Directed friend is disabled. */
*cred = BLE_MESH_FLOODING_CRED;
return BLE_MESH_ALL_BEARERS;
}
return BLE_MESH_NONE_BEARER;
}
static uint8_t net_retransmission_gatt(struct bt_mesh_net_rx *rx,
uint8_t *cred, uint8_t *tag)
{
if (rx->ctx.recv_cred == BLE_MESH_FLOODING_CRED) {
/* Inbound bearer: GATT;
* Inbound Security Material: managed flooding;
* Condition: Proxy is enabled;
*/
if (IS_ENABLED(CONFIG_BLE_MESH_GATT_PROXY_SERVER) &&
bt_mesh_gatt_proxy_get() == BLE_MESH_GATT_PROXY_ENABLED) {
/* Condition: Directed proxy is disabled. */
*cred = BLE_MESH_FLOODING_CRED;
return BLE_MESH_ALL_BEARERS;
}
return BLE_MESH_NONE_BEARER;
}
return BLE_MESH_NONE_BEARER;
}
static uint8_t bt_mesh_net_retrans_match(struct bt_mesh_net_rx *rx,
uint8_t *cred, uint8_t *tag)
{
if (rx->net_if == BLE_MESH_NET_IF_ADV) {
return net_retransmission_adv(rx, cred, tag);
}
if (rx->net_if == BLE_MESH_NET_IF_PROXY) {
return net_retransmission_gatt(rx, cred, tag);
}
return BLE_MESH_NONE_BEARER;
}
#endif /* !CONFIG_BLE_MESH_V11_SUPPORT */
static void bt_mesh_net_relay(struct net_buf_simple *sbuf,
struct bt_mesh_net_rx *rx)
{
const uint8_t *enc = NULL, *priv = NULL;
struct net_buf *buf = NULL;
uint8_t bearer = 0;
uint8_t xmit = 0U;
uint8_t cred = 0;
uint8_t nid = 0U;
bool netkey_changed = false;
uint8_t tag = 0;
if (rx->net_if == BLE_MESH_NET_IF_LOCAL) {
/* Locally originated PDUs with TTL=1 will only be delivered
* to local elements as per Mesh Profile 1.0 section 3.4.5.2:
* "The output filter of the interface connected to
* advertising or GATT bearers shall drop all messages with
* TTL value set to 1."
*/
/* For local network interface, no outbound bearer will be found.
* So currently if a PDU is received from local network interface
* with TTL=1, it will be ignored here.
*/
if (rx->ctx.recv_ttl == 1U) {
return;
}
} else {
/* Only PDU with TTL=0 will be ignored here. PDU with TTL=1 will
* be checked later to see if it could be tagged with RELAY.
*/
if (rx->ctx.recv_ttl < 1U) {
return;
}
}
#if 0
/* This could be moved, since in mesh v1.1, two more conditions could
* cause a message to be relayed, i.e. directed forwarding and subnet
* bridge.
* The two conditions will be checked with retransmission requirements.
*/
if (rx->net_if == BLE_MESH_NET_IF_ADV &&
bt_mesh_relay_get() != BLE_MESH_RELAY_ENABLED &&
bt_mesh_gatt_proxy_get() != BLE_MESH_GATT_PROXY_ENABLED &&
rx->ctx.recv_cred != BLE_MESH_FRIENDSHIP_CRED) {
return;
}
#endif
/* Mesh spec 3.4.6.3:
* "The Network PDU shall be evaluated against retransmission conditions
* for incoming Network PDUs as defined in Table 3.10. For a Network PDU,
* there may be more than one matching row in Table 3.10. If there is no
* row that matches the retransmission conditions, then the Network PDU
* shall not be retransmitted."
*/
bearer = bt_mesh_net_retrans_match(rx, &cred, &tag);
if (bearer == BLE_MESH_NONE_BEARER) {
BT_WARN("No outbound bearer found, inbound bearer %d", rx->net_if);
return;
}
#if CONFIG_BLE_MESH_BRC_SRV
if (rx->sbr_rpl) {
BT_ERR("Bridge RPL attack");
goto done;
}
#endif
if (cred != BLE_MESH_FLOODING_CRED
#if CONFIG_BLE_MESH_DF_SRV
&& cred != BLE_MESH_DIRECTED_CRED
#endif
) {
BT_WARN("No outbound security cred found, inbound cred %d", rx->ctx.recv_cred);
return;
}
if (rx->ctx.recv_ttl == 0x01) {
BT_DBG("Ignore PDU with TTL = 1");
return;
}
if (rx->ctx.recv_ttl == 0x02 && bt_mesh_tag_relay(tag) == false) {
BT_DBG("Ignore PDU with TTL = 2 but not tagged as relay");
return;
}
BT_DBG("TTL %u CTL %u dst 0x%04x", rx->ctx.recv_ttl, rx->ctl, rx->ctx.recv_dst);
/* The Relay Retransmit state is only applied to adv-adv relaying.
* Anything else (like GATT to adv, or locally originated packets)
* use the Network Transmit state.
*/
if (rx->net_if == BLE_MESH_NET_IF_ADV &&
rx->ctx.recv_cred != BLE_MESH_FRIENDSHIP_CRED) {
xmit = bt_mesh_relay_retransmit_get();
} else {
xmit = bt_mesh_net_transmit_get();
}
#if 0
/* TODO: Needs further thinking. */
xmit = bt_mesh_net_adv_xmit_update(cred, tag, rx->ctl);
if (xmit == 0) {
return;
}
#endif
/* TODO:
* When the node tries to relay a Segment ACK message, in this case
* the corresponding segment packets (if exist) can be removed from
* the relay queue.
*/
#if !CONFIG_BLE_MESH_RELAY_ADV_BUF
buf = bt_mesh_adv_create(BLE_MESH_ADV_DATA, K_NO_WAIT);
#else
/* Check if the number of relay packets in queue is too large, if so
* use minimum relay retransmit value for later relay packets.
*/
if (bt_mesh_get_stored_relay_count() >= BLE_MESH_MAX_STORED_RELAY_COUNT) {
xmit = BLE_MESH_TRANSMIT(0, 20);
}
buf = bt_mesh_relay_adv_create(BLE_MESH_ADV_DATA, K_NO_WAIT);
#endif
if (!buf) {
BT_INFO("Out of relay buffers");
return;
}
/* Only decrement TTL for non-locally originated packets */
if (rx->net_if != BLE_MESH_NET_IF_LOCAL) {
/* Leave CTL bit intact */
sbuf->data[1] &= 0x80;
sbuf->data[1] |= rx->ctx.recv_ttl - 1U;
}
net_buf_add_mem(buf, sbuf->data, sbuf->len);
if (cred == BLE_MESH_FLOODING_CRED) {
enc = rx->sub->keys[rx->sub->kr_flag].enc;
priv = rx->sub->keys[rx->sub->kr_flag].privacy;
nid = rx->sub->keys[rx->sub->kr_flag].nid;
#if CONFIG_BLE_MESH_DF_SRV
} else {
enc = rx->sub->keys[rx->sub->kr_flag].direct_enc;
priv = rx->sub->keys[rx->sub->kr_flag].direct_privacy;
nid = rx->sub->keys[rx->sub->kr_flag].direct_nid;
#endif /* CONFIG_BLE_MESH_DF_SRV */
}
#if CONFIG_BLE_MESH_BRC_SRV
/* Check if subnet bridge is supported & decide which NetKey is used */
if (bt_mesh_subnet_bridge_state_get() == BLE_MESH_SUBNET_BRIDGE_ENABLED) {
netkey_changed = bt_mesh_bridge_change_net_key(rx, &enc, &priv, &nid, cred);
}
#endif
BT_DBG("Relaying packet. TTL is now %u", BLE_MESH_NET_HDR_TTL(buf->data));
/* 1. Update NID if RX or RX was with friend credentials(included by case 3).
* 2. Update NID if the net_key has changed.
* 3. Update NID if credential has changed.
*/
if (netkey_changed || cred != rx->ctx.recv_cred) {
buf->data[0] &= 0x80; /* Clear everything except IVI */
buf->data[0] |= nid;
}
/* We re-encrypt and obfuscate using the received IVI rather than
* the normal TX IVI (which may be different) since the transport
* layer nonce includes the IVI.
*/
if (bt_mesh_net_encrypt(enc, &buf->b, BLE_MESH_NET_IVI_RX(rx), false, false)) {
BT_ERR("Re-encrypting failed");
goto done;
}
if (bt_mesh_net_obfuscate(buf->data, BLE_MESH_NET_IVI_RX(rx), priv)) {
BT_ERR("Re-obfuscating failed");
goto done;
}
/* Sending to the GATT bearer should only happen if GATT Proxy
* is enabled or the message originates from the local node.
*
* The output filter of the interface connected to the GATT bearer
* shall drop all messages secured using the friendship security
* credentials.
*/
if (IS_ENABLED(CONFIG_BLE_MESH_GATT_PROXY_SERVER) &&
(bearer & BLE_MESH_GATT_BEARER) &&
((bt_mesh_gatt_proxy_get() == BLE_MESH_GATT_PROXY_ENABLED &&
cred != BLE_MESH_FRIENDSHIP_CRED) ||
#if CONFIG_BLE_MESH_PRB_SRV
bt_mesh_private_gatt_proxy_state_get() == BLE_MESH_PRIVATE_GATT_PROXY_ENABLED ||
#endif
rx->net_if == BLE_MESH_NET_IF_LOCAL ||
rx->ctx.recv_cred == BLE_MESH_FRIENDSHIP_CRED)) {
if (bt_mesh_proxy_server_relay(&buf->b, rx->ctx.recv_dst) &&
BLE_MESH_ADDR_IS_UNICAST(rx->ctx.recv_dst)) {
if ((bearer & (~BLE_MESH_GATT_BEARER)) == 0) {
goto done;
}
}
}
if (((bearer & BLE_MESH_ADV_BEARER) && relay_to_adv(rx->net_if)) ||
netkey_changed ||
rx->ctx.recv_cred == BLE_MESH_FRIENDSHIP_CRED) {
#if !CONFIG_BLE_MESH_RELAY_ADV_BUF
bt_mesh_adv_send(buf, xmit, NULL, NULL);
#else
bt_mesh_relay_adv_send(buf, xmit, rx->ctx.addr, rx->ctx.recv_dst, NULL, NULL);
#endif
}
done:
net_buf_unref(buf);
}
void bt_mesh_net_header_parse(struct net_buf_simple *buf,
struct bt_mesh_net_rx *rx)
{
rx->old_iv = (BLE_MESH_NET_HDR_IVI(buf->data) != (bt_mesh.iv_index & 0x01));
rx->ctl = BLE_MESH_NET_HDR_CTL(buf->data);
rx->ctx.recv_ttl = BLE_MESH_NET_HDR_TTL(buf->data);
rx->seq = BLE_MESH_NET_HDR_SEQ(buf->data);
rx->ctx.addr = BLE_MESH_NET_HDR_SRC(buf->data);
rx->ctx.recv_dst = BLE_MESH_NET_HDR_DST(buf->data);
}
int bt_mesh_net_decode(struct net_buf_simple *data, enum bt_mesh_net_if net_if,
struct bt_mesh_net_rx *rx, struct net_buf_simple *buf)
{
if (data->len < BLE_MESH_NET_MIN_PDU_LEN) {
BT_WARN("Dropping too short mesh packet (len %u)", data->len);
BT_WARN("%s", bt_hex(data->data, data->len));
return -EINVAL;
}
if (net_if == BLE_MESH_NET_IF_ADV && check_dup(data)) {
return -EINVAL;
}
BT_DBG("%u bytes: %s", data->len, bt_hex(data->data, data->len));
rx->net_if = net_if;
if (!net_find_and_decrypt(data->data, data->len, rx, buf)) {
BT_DBG("Unable to find matching net for packet");
return -ENOENT;
}
/* Spec v1.1, Section 3.4.5.1:
* The input filter of the interface connected to the GATT
* bearer shall drop all messages that have been secured
* using the friendship security credentials.
*/
if (net_if == BLE_MESH_NET_IF_PROXY &&
rx->ctx.recv_cred == BLE_MESH_FRIENDSHIP_CRED) {
BT_WARN("Dropping packet from GATT bearer using friendship creds");
return -EBADMSG;
}
/* Initialize AppIdx to a sane value */
rx->ctx.app_idx = BLE_MESH_KEY_UNUSED;
rx->ctx.recv_ttl = BLE_MESH_NET_HDR_TTL(buf->data);
/* Default to responding with TTL 0 for non-routed messages */
if (rx->ctx.recv_ttl == 0U) {
rx->ctx.send_ttl = 0U;
} else {
rx->ctx.send_ttl = BLE_MESH_TTL_DEFAULT;
}
rx->ctl = BLE_MESH_NET_HDR_CTL(buf->data);
rx->seq = BLE_MESH_NET_HDR_SEQ(buf->data);
rx->ctx.recv_dst = BLE_MESH_NET_HDR_DST(buf->data);
BT_DBG("Decryption successful. Payload len %u", buf->len);
if (net_if != BLE_MESH_NET_IF_PROXY_CFG &&
rx->ctx.recv_dst == BLE_MESH_ADDR_UNASSIGNED) {
BT_ERR("Destination address is unassigned; dropping packet");
return -EBADMSG;
}
/* For case MESH/NODE/RLY/BV-01-C, even the DST is RFU, it needs to be forwarded. */
#if !CONFIG_BLE_MESH_BQB_TEST
if (BLE_MESH_ADDR_IS_RFU(rx->ctx.recv_dst)) {
BT_ERR("Destination address is RFU; dropping packet 0x%02x", rx->ctx.recv_dst);
return -EBADMSG;
}
#endif
if (net_if != BLE_MESH_NET_IF_LOCAL && bt_mesh_elem_find(rx->ctx.addr)) {
BT_DBG("Dropping locally originated packet");
return -EBADMSG;
}
BT_DBG("src 0x%04x dst 0x%04x ttl %u", rx->ctx.addr, rx->ctx.recv_dst,
rx->ctx.recv_ttl);
BT_DBG("PDU: %s", bt_hex(buf->data, buf->len));
msg_cache_add(rx);
return 0;
}
static bool ready_to_recv(void)
{
if (IS_ENABLED(CONFIG_BLE_MESH_NODE) && bt_mesh_is_provisioned()) {
return true;
}
if (IS_ENABLED(CONFIG_BLE_MESH_PROVISIONER) && bt_mesh_is_provisioner_en()) {
if (bt_mesh_provisioner_get_node_count()) {
return true;
}
}
return false;
}
static bool ignore_net_msg(uint16_t src, uint16_t dst)
{
if (IS_ENABLED(CONFIG_BLE_MESH_FAST_PROV)) {
/* When fast provisioning is enabled, the node addr
* message will be sent to the Primary Provisioner,
* which shall not be ignored here.
*/
return false;
}
if (IS_ENABLED(CONFIG_BLE_MESH_PROVISIONER) &&
bt_mesh_is_provisioner_en()) {
/* If the destination address of the message is the element
* address of Provisioner, but Provisioner fails to find the
* node in its provisioning database, then this message will
* be ignored.
* Note: extra check src here to support Provisioner sending
* messages to itself.
*/
if (!bt_mesh_provisioner_get_node_with_addr(src) &&
!bt_mesh_elem_find(src)) {
BT_INFO("Not found node address 0x%04x", src);
return true;
}
}
return false;
}
void bt_mesh_net_recv(struct net_buf_simple *data, int8_t rssi,
enum bt_mesh_net_if net_if)
{
NET_BUF_SIMPLE_DEFINE(buf, 29);
struct bt_mesh_net_rx rx = { .ctx.recv_rssi = rssi };
struct net_buf_simple_state state = {0};
BT_DBG("rssi %d net_if %u", rssi, net_if);
if (!ready_to_recv()) {
return;
}
if (bt_mesh_net_decode(data, net_if, &rx, &buf)) {
return;
}
if (ignore_net_msg(rx.ctx.addr, rx.ctx.recv_dst)) {
return;
}
/* Save the state so the buffer can later be relayed */
net_buf_simple_save(&buf, &state);
BT_BQB(BLE_MESH_BQB_TEST_LOG_LEVEL_PRIMARY_ID_NODE | \
BLE_MESH_BQB_TEST_LOG_LEVEL_SUB_ID_NET,
"\nNetRecv: ctl: %d, src: %d, dst: %d, ttl: %d, data: 0x%s",
rx.ctl, rx.ctx.addr, rx.ctx.recv_dst, rx.ctx.recv_ttl,
bt_hex(buf.data + BLE_MESH_NET_HDR_LEN, buf.len - BLE_MESH_NET_HDR_LEN));
/* If trying to handle a message with DST set to all-directed-forwarding-nodes,
* we need to make sure the directed forwarding functionality is enabled in the
* corresponding subnet.
*/
rx.local_match = (bt_mesh_fixed_group_match(rx.ctx.recv_dst) ||
bt_mesh_fixed_direct_match(rx.sub, rx.ctx.recv_dst) ||
bt_mesh_elem_find(rx.ctx.recv_dst));
if (IS_ENABLED(CONFIG_BLE_MESH_GATT_PROXY_SERVER) &&
#if CONFIG_BLE_MESH_PRB_SRV
bt_mesh_private_gatt_proxy_state_get() != BLE_MESH_PRIVATE_GATT_PROXY_ENABLED &&
#endif
net_if == BLE_MESH_NET_IF_PROXY) {
bt_mesh_proxy_server_addr_add(data, rx.ctx.addr);
if (bt_mesh_gatt_proxy_get() == BLE_MESH_GATT_PROXY_DISABLED &&
!rx.local_match) {
BT_INFO("Proxy is disabled; ignoring message");
return;
}
/* If the Directed Proxy Server receives a valid Network PDU from the Directed
* Proxy Client, and the value of the Use_Directed parameter of the connection
* for the subnet identified by the Network PDU is Enabled, and the source
* address of the Network PDU is outside the unicast address range defined by
* the Proxy_Client_Address_Range parameter, then the Directed Proxy Server shall
* tag the Network PDU with the immutable-credentials tag.
*/
#if CONFIG_BLE_MESH_DF_SRV
if (rx.sub->directed_proxy == BLE_MESH_DIRECTED_PROXY_ENABLED &&
rx.sub->use_directed == BLE_MESH_PROXY_USE_DIRECTED_ENABLED &&
!bt_mesh_addr_in_uar(&rx.sub->proxy_client_uar, rx.ctx.addr) &&
!bt_mesh_proxy_server_find_client_by_addr(rx.ctx.addr)) {
rx.ctx.recv_tag |= BLE_MESH_TAG_IMMUTABLE_CRED;
}
#endif /* CONFIG_BLE_MESH_DF_SRV */
}
/* The transport layer has indicated that it has rejected the message,
* but would like to see it again if it is received in the future.
* This can happen if a message is received when the device is in
* Low Power mode, but the message was not encrypted with the friend
* credentials. Remove it from the message cache so that we accept
* it again in the future.
*/
if (bt_mesh_trans_recv(&buf, &rx) == -EAGAIN) {
BT_WARN("Removing rejected message from Network Message Cache");
msg_cache[rx.msg_cache_idx].src = BLE_MESH_ADDR_UNASSIGNED;
/* Rewind the next index now that we're not using this entry */
msg_cache_next = rx.msg_cache_idx;
}
/* Relay if this was a group/virtual address, or if the destination
* was neither a local element nor an LPN we're Friends for.
*/
if (!BLE_MESH_ADDR_IS_UNICAST(rx.ctx.recv_dst) ||
(!rx.local_match && !rx.friend_match
#if CONFIG_BLE_MESH_NOT_RELAY_REPLAY_MSG
&& !rx.replay_msg
#endif
)) {
net_buf_simple_restore(&buf, &state);
bt_mesh_net_relay(&buf, &rx);
}
}
static void ivu_refresh(struct k_work *work)
{
bt_mesh.ivu_duration += BLE_MESH_IVU_HOURS;
BT_INFO("%s for %u hour%s",
bt_mesh_atomic_test_bit(bt_mesh.flags, BLE_MESH_IVU_IN_PROGRESS) ?
"IVU in Progress" : "IVU Normal mode",
bt_mesh.ivu_duration, bt_mesh.ivu_duration == 1U ? "" : "s");
if (bt_mesh.ivu_duration < BLE_MESH_IVU_MIN_HOURS) {
if (IS_ENABLED(CONFIG_BLE_MESH_SETTINGS)) {
bt_mesh_store_iv(true);
}
k_delayed_work_submit(&bt_mesh.ivu_timer, BLE_MESH_IVU_TIMEOUT);
return;
}
if (bt_mesh_atomic_test_bit(bt_mesh.flags, BLE_MESH_IVU_IN_PROGRESS)) {
bt_mesh_beacon_ivu_initiator(true);
bt_mesh_net_iv_update(bt_mesh.iv_index, false);
} else if (IS_ENABLED(CONFIG_BLE_MESH_SETTINGS)) {
bt_mesh_store_iv(true);
}
}
void bt_mesh_net_start(void)
{
if (bt_mesh_secure_beacon_get() == BLE_MESH_SECURE_BEACON_ENABLED) {
bt_mesh_secure_beacon_enable();
} else {
bt_mesh_secure_beacon_disable();
}
#if CONFIG_BLE_MESH_PRB_SRV
if (bt_mesh_private_beacon_state_get() == BLE_MESH_PRIVATE_BEACON_ENABLED) {
bt_mesh_private_beacon_enable();
} else {
bt_mesh_private_beacon_disable();
}
#endif
if (IS_ENABLED(CONFIG_BLE_MESH_GATT_PROXY_SERVER) &&
bt_mesh_gatt_proxy_get() != BLE_MESH_GATT_PROXY_NOT_SUPPORTED) {
bt_mesh_proxy_server_gatt_enable();
bt_mesh_adv_update();
}
#if CONFIG_BLE_MESH_USE_DUPLICATE_SCAN
/* Add Mesh beacon type (Secure Network Beacon) to the exceptional list */
bt_mesh_update_exceptional_list(BLE_MESH_EXCEP_LIST_SUB_CODE_ADD,
BLE_MESH_EXCEP_LIST_TYPE_MESH_BEACON,
NULL);
#endif
if (IS_ENABLED(CONFIG_BLE_MESH_LOW_POWER)) {
/* TODO: Enable duplicate scan in Low Power Mode */
bt_mesh_lpn_init();
} else {
bt_mesh_scan_enable();
}
if (IS_ENABLED(CONFIG_BLE_MESH_FRIEND)) {
bt_mesh_friend_init();
}
if (IS_ENABLED(CONFIG_BLE_MESH_PROV)) {
uint16_t net_idx = bt_mesh.sub[0].net_idx;
uint16_t addr = bt_mesh_primary_addr();
uint32_t iv_index = bt_mesh.iv_index;
uint8_t flags = (uint8_t)bt_mesh.sub[0].kr_flag;
const uint8_t *net_key = bt_mesh.sub[0].keys[flags].net;
if (bt_mesh_atomic_test_bit(bt_mesh.flags, BLE_MESH_IVU_IN_PROGRESS)) {
flags |= BLE_MESH_NET_FLAG_IVU;
}
bt_mesh_prov_complete(net_idx, net_key, addr, flags, iv_index);
}
}
void bt_mesh_net_init(void)
{
k_delayed_work_init(&bt_mesh.ivu_timer, ivu_refresh);
}
void bt_mesh_net_reset(void)
{
k_delayed_work_cancel(&bt_mesh.ivu_timer);
#if FRIEND_CRED_COUNT > 0
memset(friend_cred, 0, sizeof(friend_cred));
#endif
memset(msg_cache, 0, sizeof(msg_cache));
msg_cache_next = 0U;
memset(dup_cache, 0, sizeof(dup_cache));
dup_cache_next = 0U;
bt_mesh.iv_index = 0U;
bt_mesh.seq = 0U;
}
#if CONFIG_BLE_MESH_DEINIT
void bt_mesh_net_deinit(void)
{
bt_mesh_net_reset();
k_delayed_work_free(&bt_mesh.ivu_timer);
/* Local queue uses a while loop, currently no need
* to handle this.
*/
}
#endif /* CONFIG_BLE_MESH_DEINIT */
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