blob: 8b40ec033a4e1e97207317afdde66060375a743b [file] [log] [blame]
/*
* Copyright (c) 2019 Tobias Svehagen
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <zephyr/kernel.h>
#include <string.h>
#include <stdlib.h>
#include <zephyr/settings/settings.h>
#include <zephyr/bluetooth/mesh.h>
#include "common/bt_str.h"
#include "cdb.h"
#include "mesh.h"
#include "net.h"
#include "rpl.h"
#include "settings.h"
#define LOG_LEVEL CONFIG_BT_MESH_CDB_LOG_LEVEL
#include <zephyr/logging/log.h>
LOG_MODULE_REGISTER(bt_mesh_cdb);
/* Tracking of what storage changes are pending for App and Net Keys. We
* track this in a separate array here instead of within the respective
* bt_mesh_app_key and bt_mesh_subnet structs themselves, since once a key
* gets deleted its struct becomes invalid and may be reused for other keys.
*/
struct key_update {
uint16_t key_idx:12, /* AppKey or NetKey Index */
valid:1, /* 1 if this entry is valid, 0 if not */
app_key:1, /* 1 if this is an AppKey, 0 if a NetKey */
clear:1; /* 1 if key needs clearing, 0 if storing */
};
/* Tracking of what storage changes are pending for node settings. */
struct node_update {
uint16_t addr;
bool clear;
};
/* Node information for persistent storage. */
struct node_val {
uint16_t net_idx;
uint8_t num_elem;
uint8_t flags;
#define F_NODE_CONFIGURED 0x01
uint8_t uuid[16];
uint8_t dev_key[16];
} __packed;
/* NetKey storage information */
struct net_key_val {
uint8_t kr_flag:1,
kr_phase:7;
uint8_t val[2][16];
} __packed;
/* AppKey information for persistent storage. */
struct app_key_val {
uint16_t net_idx;
bool updated;
uint8_t val[2][16];
} __packed;
/* Network information for persistent storage. */
struct net_val {
struct __packed {
uint32_t index;
bool update;
} iv;
uint16_t lowest_avail_addr;
} __packed;
/* One more entry for the node's address update. */
static struct node_update cdb_node_updates[CONFIG_BT_MESH_CDB_NODE_COUNT + 1];
static struct key_update cdb_key_updates[CONFIG_BT_MESH_CDB_SUBNET_COUNT +
CONFIG_BT_MESH_CDB_APP_KEY_COUNT];
struct bt_mesh_cdb bt_mesh_cdb = {
.nodes = {
[0 ... (CONFIG_BT_MESH_CDB_NODE_COUNT - 1)] = {
.addr = BT_MESH_ADDR_UNASSIGNED,
}
},
.subnets = {
[0 ... (CONFIG_BT_MESH_CDB_SUBNET_COUNT - 1)] = {
.net_idx = BT_MESH_KEY_UNUSED,
}
},
.app_keys = {
[0 ... (CONFIG_BT_MESH_CDB_APP_KEY_COUNT - 1)] = {
.net_idx = BT_MESH_KEY_UNUSED,
}
},
};
/*
* Check if an address range from addr_start for addr_start + num_elem - 1 is
* free for use. When a conflict is found, next will be set to the next address
* available after the conflicting range and -EAGAIN will be returned.
*/
static int addr_is_free(uint16_t addr_start, uint8_t num_elem, uint16_t *next)
{
uint16_t addr_end = addr_start + num_elem - 1;
uint16_t other_start, other_end;
int i;
if (!BT_MESH_ADDR_IS_UNICAST(addr_start) ||
!BT_MESH_ADDR_IS_UNICAST(addr_end) ||
num_elem == 0) {
return -EINVAL;
}
for (i = 0; i < ARRAY_SIZE(bt_mesh_cdb.nodes); i++) {
struct bt_mesh_cdb_node *node = &bt_mesh_cdb.nodes[i];
if (node->addr == BT_MESH_ADDR_UNASSIGNED) {
continue;
}
other_start = node->addr;
other_end = other_start + node->num_elem - 1;
if (!(addr_end < other_start || addr_start > other_end)) {
if (next) {
*next = other_end + 1;
}
return -EAGAIN;
}
}
return 0;
}
/*
* Find the lowest possible starting address that can fit num_elem elements. If
* a free address range cannot be found, BT_MESH_ADDR_UNASSIGNED will be
* returned. Otherwise the first address in the range is returned.
*
* NOTE: This is quite an ineffective algorithm as it might need to look
* through the array of nodes N+2 times. A more effective algorithm
* could be used if the nodes were stored in a sorted list.
*/
static uint16_t find_lowest_free_addr(uint8_t num_elem)
{
uint16_t addr = bt_mesh_cdb.lowest_avail_addr;
uint16_t next;
int err, i;
/*
* It takes a maximum of node count + 2 to find a free address if there
* is any. +1 for our own address and +1 for making sure that the
* address range is valid.
*/
for (i = 0; i < ARRAY_SIZE(bt_mesh_cdb.nodes) + 2; ++i) {
err = addr_is_free(addr, num_elem, &next);
if (err == 0) {
break;
} else if (err != -EAGAIN) {
addr = BT_MESH_ADDR_UNASSIGNED;
break;
}
addr = next;
}
return addr;
}
static int cdb_net_set(const char *name, size_t len_rd,
settings_read_cb read_cb, void *cb_arg)
{
struct net_val net;
int err;
if (len_rd == 0) {
LOG_DBG("val (null)");
return 0;
}
err = bt_mesh_settings_set(read_cb, cb_arg, &net, sizeof(net));
if (err) {
/* Try to recover previous version of the network settings without address. */
err = bt_mesh_settings_set(read_cb, cb_arg, &net, sizeof(net.iv));
if (err) {
LOG_ERR("Failed to set \'cdb_net\'");
return err;
}
net.lowest_avail_addr = 1;
}
bt_mesh_cdb.iv_index = net.iv.index;
if (net.iv.update) {
atomic_set_bit(bt_mesh_cdb.flags, BT_MESH_CDB_IVU_IN_PROGRESS);
}
bt_mesh_cdb.lowest_avail_addr = net.lowest_avail_addr;
atomic_set_bit(bt_mesh_cdb.flags, BT_MESH_CDB_VALID);
return 0;
}
static int cdb_node_set(const char *name, size_t len_rd,
settings_read_cb read_cb, void *cb_arg)
{
struct bt_mesh_cdb_node *node;
struct node_val val;
uint16_t addr;
int err;
if (!name) {
LOG_ERR("Insufficient number of arguments");
return -ENOENT;
}
addr = strtol(name, NULL, 16);
if (len_rd == 0) {
LOG_DBG("val (null)");
LOG_DBG("Deleting node 0x%04x", addr);
node = bt_mesh_cdb_node_get(addr);
if (node) {
bt_mesh_cdb_node_del(node, false);
}
return 0;
}
err = bt_mesh_settings_set(read_cb, cb_arg, &val, sizeof(val));
if (err) {
LOG_ERR("Failed to set \'node\'");
return err;
}
node = bt_mesh_cdb_node_get(addr);
if (!node) {
node = bt_mesh_cdb_node_alloc(val.uuid, addr, val.num_elem,
val.net_idx);
}
if (!node) {
LOG_ERR("No space for a new node");
return -ENOMEM;
}
if (val.flags & F_NODE_CONFIGURED) {
atomic_set_bit(node->flags, BT_MESH_CDB_NODE_CONFIGURED);
}
memcpy(node->uuid, val.uuid, 16);
memcpy(node->dev_key, val.dev_key, 16);
LOG_DBG("Node 0x%04x recovered from storage", addr);
return 0;
}
static int cdb_subnet_set(const char *name, size_t len_rd,
settings_read_cb read_cb, void *cb_arg)
{
struct bt_mesh_cdb_subnet *sub;
struct net_key_val key;
uint16_t net_idx;
int err;
if (!name) {
LOG_ERR("Insufficient number of arguments");
return -ENOENT;
}
net_idx = strtol(name, NULL, 16);
sub = bt_mesh_cdb_subnet_get(net_idx);
if (len_rd == 0) {
LOG_DBG("val (null)");
if (!sub) {
LOG_ERR("No subnet with NetKeyIndex 0x%03x", net_idx);
return -ENOENT;
}
LOG_DBG("Deleting NetKeyIndex 0x%03x", net_idx);
bt_mesh_cdb_subnet_del(sub, false);
return 0;
}
err = bt_mesh_settings_set(read_cb, cb_arg, &key, sizeof(key));
if (err) {
LOG_ERR("Failed to set \'net-key\'");
return err;
}
if (sub) {
LOG_DBG("Updating existing NetKeyIndex 0x%03x", net_idx);
sub->kr_phase = key.kr_phase;
memcpy(sub->keys[0].net_key, &key.val[0], 16);
memcpy(sub->keys[1].net_key, &key.val[1], 16);
return 0;
}
sub = bt_mesh_cdb_subnet_alloc(net_idx);
if (!sub) {
LOG_ERR("No space to allocate a new subnet");
return -ENOMEM;
}
sub->kr_phase = key.kr_phase;
memcpy(sub->keys[0].net_key, &key.val[0], 16);
memcpy(sub->keys[1].net_key, &key.val[1], 16);
LOG_DBG("NetKeyIndex 0x%03x recovered from storage", net_idx);
return 0;
}
static int cdb_app_key_set(const char *name, size_t len_rd,
settings_read_cb read_cb, void *cb_arg)
{
struct bt_mesh_cdb_app_key *app;
struct app_key_val key;
uint16_t app_idx;
int err;
if (!name) {
LOG_ERR("Insufficient number of arguments");
return -ENOENT;
}
app_idx = strtol(name, NULL, 16);
if (len_rd == 0) {
LOG_DBG("val (null)");
LOG_DBG("Deleting AppKeyIndex 0x%03x", app_idx);
app = bt_mesh_cdb_app_key_get(app_idx);
if (app) {
bt_mesh_cdb_app_key_del(app, false);
}
return 0;
}
err = bt_mesh_settings_set(read_cb, cb_arg, &key, sizeof(key));
if (err) {
LOG_ERR("Failed to set \'app-key\'");
return err;
}
app = bt_mesh_cdb_app_key_get(app_idx);
if (!app) {
app = bt_mesh_cdb_app_key_alloc(key.net_idx, app_idx);
}
if (!app) {
LOG_ERR("No space for a new app key");
return -ENOMEM;
}
memcpy(app->keys[0].app_key, key.val[0], 16);
memcpy(app->keys[1].app_key, key.val[1], 16);
LOG_DBG("AppKeyIndex 0x%03x recovered from storage", app_idx);
return 0;
}
static int cdb_set(const char *name, size_t len_rd,
settings_read_cb read_cb, void *cb_arg)
{
int len;
const char *next;
if (!name) {
LOG_ERR("Insufficient number of arguments");
return -ENOENT;
}
if (!strcmp(name, "Net")) {
return cdb_net_set(name, len_rd, read_cb, cb_arg);
}
len = settings_name_next(name, &next);
if (!next) {
LOG_ERR("Insufficient number of arguments");
return -ENOENT;
}
if (!strncmp(name, "Node", len)) {
return cdb_node_set(next, len_rd, read_cb, cb_arg);
}
if (!strncmp(name, "Subnet", len)) {
return cdb_subnet_set(next, len_rd, read_cb, cb_arg);
}
if (!strncmp(name, "AppKey", len)) {
return cdb_app_key_set(next, len_rd, read_cb, cb_arg);
}
LOG_WRN("Unknown module key %s", name);
return -ENOENT;
}
BT_MESH_SETTINGS_DEFINE(cdb, "cdb", cdb_set);
static void store_cdb_node(const struct bt_mesh_cdb_node *node)
{
struct node_val val;
char path[30];
int err;
val.net_idx = node->net_idx;
val.num_elem = node->num_elem;
val.flags = 0;
if (atomic_test_bit(node->flags, BT_MESH_CDB_NODE_CONFIGURED)) {
val.flags |= F_NODE_CONFIGURED;
}
memcpy(val.uuid, node->uuid, 16);
memcpy(val.dev_key, node->dev_key, 16);
snprintk(path, sizeof(path), "bt/mesh/cdb/Node/%x", node->addr);
err = settings_save_one(path, &val, sizeof(val));
if (err) {
LOG_ERR("Failed to store Node %s value", path);
} else {
LOG_DBG("Stored Node %s value", path);
}
}
static void clear_cdb_node(uint16_t addr)
{
char path[30];
int err;
LOG_DBG("Node 0x%04x", addr);
snprintk(path, sizeof(path), "bt/mesh/cdb/Node/%x", addr);
err = settings_delete(path);
if (err) {
LOG_ERR("Failed to clear Node 0x%04x", addr);
} else {
LOG_DBG("Cleared Node 0x%04x", addr);
}
}
static void store_cdb_subnet(const struct bt_mesh_cdb_subnet *sub)
{
struct net_key_val key;
char path[30];
int err;
LOG_DBG("NetKeyIndex 0x%03x NetKey %s", sub->net_idx, bt_hex(sub->keys[0].net_key, 16));
memcpy(&key.val[0], sub->keys[0].net_key, 16);
memcpy(&key.val[1], sub->keys[1].net_key, 16);
key.kr_flag = 0U; /* Deprecated */
key.kr_phase = sub->kr_phase;
snprintk(path, sizeof(path), "bt/mesh/cdb/Subnet/%x", sub->net_idx);
err = settings_save_one(path, &key, sizeof(key));
if (err) {
LOG_ERR("Failed to store Subnet value");
} else {
LOG_DBG("Stored Subnet value");
}
}
static void clear_cdb_subnet(uint16_t net_idx)
{
char path[30];
int err;
LOG_DBG("NetKeyIndex 0x%03x", net_idx);
snprintk(path, sizeof(path), "bt/mesh/cdb/Subnet/%x", net_idx);
err = settings_delete(path);
if (err) {
LOG_ERR("Failed to clear NetKeyIndex 0x%03x", net_idx);
} else {
LOG_DBG("Cleared NetKeyIndex 0x%03x", net_idx);
}
}
static void store_cdb_app_key(const struct bt_mesh_cdb_app_key *app)
{
struct app_key_val key;
char path[30];
int err;
key.net_idx = app->net_idx;
key.updated = false;
memcpy(key.val[0], app->keys[0].app_key, 16);
memcpy(key.val[1], app->keys[1].app_key, 16);
snprintk(path, sizeof(path), "bt/mesh/cdb/AppKey/%x", app->app_idx);
err = settings_save_one(path, &key, sizeof(key));
if (err) {
LOG_ERR("Failed to store AppKey %s value", path);
} else {
LOG_DBG("Stored AppKey %s value", path);
}
}
static void clear_cdb_app_key(uint16_t app_idx)
{
char path[30];
int err;
snprintk(path, sizeof(path), "bt/mesh/cdb/AppKey/%x", app_idx);
err = settings_delete(path);
if (err) {
LOG_ERR("Failed to clear AppKeyIndex 0x%03x", app_idx);
} else {
LOG_DBG("Cleared AppKeyIndex 0x%03x", app_idx);
}
}
static void schedule_cdb_store(int flag)
{
atomic_set_bit(bt_mesh_cdb.flags, flag);
bt_mesh_settings_store_schedule(BT_MESH_SETTINGS_CDB_PENDING);
}
static void update_cdb_net_settings(void)
{
schedule_cdb_store(BT_MESH_CDB_SUBNET_PENDING);
}
static struct node_update *cdb_node_update_find(uint16_t addr,
struct node_update **free_slot)
{
struct node_update *match;
int i;
match = NULL;
*free_slot = NULL;
for (i = 0; i < ARRAY_SIZE(cdb_node_updates); i++) {
struct node_update *update = &cdb_node_updates[i];
if (update->addr == BT_MESH_ADDR_UNASSIGNED) {
*free_slot = update;
continue;
}
if (update->addr == addr) {
match = update;
}
}
return match;
}
static void update_cdb_node_settings(const struct bt_mesh_cdb_node *node,
bool store)
{
struct node_update *update, *free_slot;
LOG_DBG("Node 0x%04x", node->addr);
update = cdb_node_update_find(node->addr, &free_slot);
if (update) {
update->clear = !store;
schedule_cdb_store(BT_MESH_CDB_NODES_PENDING);
return;
}
if (!free_slot) {
if (store) {
store_cdb_node(node);
} else {
clear_cdb_node(node->addr);
}
return;
}
free_slot->addr = node->addr;
free_slot->clear = !store;
schedule_cdb_store(BT_MESH_CDB_NODES_PENDING);
}
static struct key_update *cdb_key_update_find(bool app_key, uint16_t key_idx,
struct key_update **free_slot)
{
struct key_update *match;
int i;
match = NULL;
*free_slot = NULL;
for (i = 0; i < ARRAY_SIZE(cdb_key_updates); i++) {
struct key_update *update = &cdb_key_updates[i];
if (!update->valid) {
*free_slot = update;
continue;
}
if (update->app_key != app_key) {
continue;
}
if (update->key_idx == key_idx) {
match = update;
}
}
return match;
}
static void update_cdb_subnet_settings(const struct bt_mesh_cdb_subnet *sub,
bool store)
{
struct key_update *update, *free_slot;
uint8_t clear = store ? 0U : 1U;
LOG_DBG("NetKeyIndex 0x%03x", sub->net_idx);
update = cdb_key_update_find(false, sub->net_idx, &free_slot);
if (update) {
update->clear = clear;
schedule_cdb_store(BT_MESH_CDB_KEYS_PENDING);
return;
}
if (!free_slot) {
if (store) {
store_cdb_subnet(sub);
} else {
clear_cdb_subnet(sub->net_idx);
}
return;
}
free_slot->valid = 1U;
free_slot->key_idx = sub->net_idx;
free_slot->app_key = 0U;
free_slot->clear = clear;
schedule_cdb_store(BT_MESH_CDB_KEYS_PENDING);
}
static void update_cdb_app_key_settings(const struct bt_mesh_cdb_app_key *key,
bool store)
{
struct key_update *update, *free_slot;
uint8_t clear = store ? 0U : 1U;
LOG_DBG("AppKeyIndex 0x%03x", key->app_idx);
update = cdb_key_update_find(true, key->app_idx, &free_slot);
if (update) {
update->clear = clear;
schedule_cdb_store(BT_MESH_CDB_KEYS_PENDING);
return;
}
if (!free_slot) {
if (store) {
store_cdb_app_key(key);
} else {
clear_cdb_app_key(key->app_idx);
}
return;
}
free_slot->valid = 1U;
free_slot->key_idx = key->app_idx;
free_slot->app_key = 1U;
free_slot->clear = clear;
schedule_cdb_store(BT_MESH_CDB_KEYS_PENDING);
}
static uint16_t addr_assign(uint16_t addr, uint8_t num_elem)
{
if (addr == BT_MESH_ADDR_UNASSIGNED) {
addr = find_lowest_free_addr(num_elem);
} else if (addr < bt_mesh_cdb.lowest_avail_addr) {
return BT_MESH_ADDR_UNASSIGNED;
} else if (addr_is_free(addr, num_elem, NULL) < 0) {
LOG_DBG("Address range 0x%04x-0x%04x is not free", addr,
addr + num_elem - 1);
return BT_MESH_ADDR_UNASSIGNED;
}
return addr;
}
int bt_mesh_cdb_create(const uint8_t key[16])
{
struct bt_mesh_cdb_subnet *sub;
if (atomic_test_and_set_bit(bt_mesh_cdb.flags,
BT_MESH_CDB_VALID)) {
return -EALREADY;
}
sub = bt_mesh_cdb_subnet_alloc(BT_MESH_KEY_PRIMARY);
if (sub == NULL) {
return -ENOMEM;
}
memcpy(sub->keys[0].net_key, key, 16);
bt_mesh_cdb.iv_index = 0;
bt_mesh_cdb.lowest_avail_addr = 1;
if (IS_ENABLED(CONFIG_BT_SETTINGS)) {
update_cdb_net_settings();
update_cdb_subnet_settings(sub, true);
}
return 0;
}
void bt_mesh_cdb_clear(void)
{
int i;
atomic_clear_bit(bt_mesh_cdb.flags, BT_MESH_CDB_VALID);
for (i = 0; i < ARRAY_SIZE(bt_mesh_cdb.nodes); ++i) {
if (bt_mesh_cdb.nodes[i].addr != BT_MESH_ADDR_UNASSIGNED) {
bt_mesh_cdb_node_del(&bt_mesh_cdb.nodes[i], true);
}
}
for (i = 0; i < ARRAY_SIZE(bt_mesh_cdb.subnets); ++i) {
if (bt_mesh_cdb.subnets[i].net_idx != BT_MESH_KEY_UNUSED) {
bt_mesh_cdb_subnet_del(&bt_mesh_cdb.subnets[i], true);
}
}
for (i = 0; i < ARRAY_SIZE(bt_mesh_cdb.app_keys); ++i) {
if (bt_mesh_cdb.app_keys[i].net_idx != BT_MESH_KEY_UNUSED) {
bt_mesh_cdb_app_key_del(&bt_mesh_cdb.app_keys[i], true);
}
}
if (IS_ENABLED(CONFIG_BT_SETTINGS)) {
update_cdb_net_settings();
bt_mesh_settings_store_pending();
}
}
void bt_mesh_cdb_iv_update(uint32_t iv_index, bool iv_update)
{
LOG_DBG("Updating IV index to %d\n", iv_index);
/* Reset the last deleted addr when IV Index is updated or recovered. */
if (!iv_update || iv_index > bt_mesh_cdb.iv_index + 1) {
bt_mesh_cdb.lowest_avail_addr = 1;
}
bt_mesh_cdb.iv_index = iv_index;
atomic_set_bit_to(bt_mesh_cdb.flags, BT_MESH_CDB_IVU_IN_PROGRESS,
iv_update);
if (IS_ENABLED(CONFIG_BT_SETTINGS)) {
update_cdb_net_settings();
}
}
struct bt_mesh_cdb_subnet *bt_mesh_cdb_subnet_alloc(uint16_t net_idx)
{
struct bt_mesh_cdb_subnet *sub;
int i;
if (bt_mesh_cdb_subnet_get(net_idx) != NULL) {
return NULL;
}
for (i = 0; i < ARRAY_SIZE(bt_mesh_cdb.subnets); ++i) {
sub = &bt_mesh_cdb.subnets[i];
if (sub->net_idx != BT_MESH_KEY_UNUSED) {
continue;
}
sub->net_idx = net_idx;
return sub;
}
return NULL;
}
void bt_mesh_cdb_subnet_del(struct bt_mesh_cdb_subnet *sub, bool store)
{
LOG_DBG("NetIdx 0x%03x store %u", sub->net_idx, store);
if (IS_ENABLED(CONFIG_BT_SETTINGS) && store) {
update_cdb_subnet_settings(sub, false);
}
sub->net_idx = BT_MESH_KEY_UNUSED;
memset(sub->keys, 0, sizeof(sub->keys));
}
struct bt_mesh_cdb_subnet *bt_mesh_cdb_subnet_get(uint16_t net_idx)
{
int i;
for (i = 0; i < ARRAY_SIZE(bt_mesh_cdb.subnets); ++i) {
if (bt_mesh_cdb.subnets[i].net_idx == net_idx) {
return &bt_mesh_cdb.subnets[i];
}
}
return NULL;
}
void bt_mesh_cdb_subnet_store(const struct bt_mesh_cdb_subnet *sub)
{
if (IS_ENABLED(CONFIG_BT_SETTINGS)) {
update_cdb_subnet_settings(sub, true);
}
}
uint8_t bt_mesh_cdb_subnet_flags(const struct bt_mesh_cdb_subnet *sub)
{
uint8_t flags = 0x00;
if (sub && SUBNET_KEY_TX_IDX(sub)) {
flags |= BT_MESH_NET_FLAG_KR;
}
if (atomic_test_bit(bt_mesh_cdb.flags, BT_MESH_CDB_IVU_IN_PROGRESS)) {
flags |= BT_MESH_NET_FLAG_IVU;
}
return flags;
}
struct bt_mesh_cdb_node *bt_mesh_cdb_node_alloc(const uint8_t uuid[16], uint16_t addr,
uint8_t num_elem, uint16_t net_idx)
{
int i;
addr = addr_assign(addr, num_elem);
if (addr == BT_MESH_ADDR_UNASSIGNED) {
return NULL;
}
for (i = 0; i < ARRAY_SIZE(bt_mesh_cdb.nodes); i++) {
struct bt_mesh_cdb_node *node = &bt_mesh_cdb.nodes[i];
if (node->addr == BT_MESH_ADDR_UNASSIGNED) {
memcpy(node->uuid, uuid, 16);
node->addr = addr;
node->num_elem = num_elem;
node->net_idx = net_idx;
atomic_set(node->flags, 0);
return node;
}
}
return NULL;
}
uint16_t bt_mesh_cdb_free_addr_get(uint8_t num_elem)
{
return find_lowest_free_addr(num_elem);
}
void bt_mesh_cdb_node_del(struct bt_mesh_cdb_node *node, bool store)
{
LOG_DBG("Node addr 0x%04x store %u", node->addr, store);
if (IS_ENABLED(CONFIG_BT_SETTINGS) && store) {
update_cdb_node_settings(node, false);
}
if (store && node->addr + node->num_elem > bt_mesh_cdb.lowest_avail_addr) {
bt_mesh_cdb.lowest_avail_addr = node->addr + node->num_elem;
if (IS_ENABLED(CONFIG_BT_SETTINGS)) {
update_cdb_net_settings();
}
}
node->addr = BT_MESH_ADDR_UNASSIGNED;
memset(node->dev_key, 0, sizeof(node->dev_key));
}
void bt_mesh_cdb_node_update(struct bt_mesh_cdb_node *node, uint16_t addr,
uint8_t num_elem)
{
/* Address is used as a key to the nodes array. Remove the current entry first, then store
* new address.
*/
if (IS_ENABLED(CONFIG_BT_SETTINGS)) {
update_cdb_node_settings(node, false);
}
node->addr = addr;
node->num_elem = num_elem;
if (IS_ENABLED(CONFIG_BT_SETTINGS)) {
update_cdb_node_settings(node, true);
}
}
struct bt_mesh_cdb_node *bt_mesh_cdb_node_get(uint16_t addr)
{
int i;
for (i = 0; i < ARRAY_SIZE(bt_mesh_cdb.nodes); i++) {
struct bt_mesh_cdb_node *node = &bt_mesh_cdb.nodes[i];
if (addr >= node->addr &&
addr <= node->addr + node->num_elem - 1) {
return node;
}
}
return NULL;
}
void bt_mesh_cdb_node_store(const struct bt_mesh_cdb_node *node)
{
if (IS_ENABLED(CONFIG_BT_SETTINGS)) {
update_cdb_node_settings(node, true);
}
}
void bt_mesh_cdb_node_foreach(bt_mesh_cdb_node_func_t func, void *user_data)
{
int i;
for (i = 0; i < ARRAY_SIZE(bt_mesh_cdb.nodes); ++i) {
if (bt_mesh_cdb.nodes[i].addr == BT_MESH_ADDR_UNASSIGNED) {
continue;
}
if (func(&bt_mesh_cdb.nodes[i], user_data) ==
BT_MESH_CDB_ITER_STOP) {
break;
}
}
}
struct bt_mesh_cdb_app_key *bt_mesh_cdb_app_key_alloc(uint16_t net_idx,
uint16_t app_idx)
{
struct bt_mesh_cdb_app_key *key;
int i;
for (i = 0; i < ARRAY_SIZE(bt_mesh_cdb.app_keys); ++i) {
key = &bt_mesh_cdb.app_keys[i];
if (key->net_idx != BT_MESH_KEY_UNUSED) {
continue;
}
key->net_idx = net_idx;
key->app_idx = app_idx;
return key;
}
return NULL;
}
void bt_mesh_cdb_app_key_del(struct bt_mesh_cdb_app_key *key, bool store)
{
LOG_DBG("AppIdx 0x%03x store %u", key->app_idx, store);
if (IS_ENABLED(CONFIG_BT_SETTINGS) && store) {
update_cdb_app_key_settings(key, false);
}
key->net_idx = BT_MESH_KEY_UNUSED;
memset(key->keys, 0, sizeof(key->keys));
}
struct bt_mesh_cdb_app_key *bt_mesh_cdb_app_key_get(uint16_t app_idx)
{
int i;
for (i = 0; i < ARRAY_SIZE(bt_mesh_cdb.app_keys); i++) {
struct bt_mesh_cdb_app_key *key = &bt_mesh_cdb.app_keys[i];
if (key->net_idx != BT_MESH_KEY_UNUSED &&
key->app_idx == app_idx) {
return key;
}
}
return NULL;
}
void bt_mesh_cdb_app_key_store(const struct bt_mesh_cdb_app_key *key)
{
if (IS_ENABLED(CONFIG_BT_SETTINGS)) {
update_cdb_app_key_settings(key, true);
}
}
static void clear_cdb_net(void)
{
int err;
err = settings_delete("bt/mesh/cdb/Net");
if (err) {
LOG_ERR("Failed to clear Network");
} else {
LOG_DBG("Cleared Network");
}
}
static void store_cdb_pending_net(void)
{
struct net_val net;
int err;
LOG_DBG("");
net.iv.index = bt_mesh_cdb.iv_index;
net.iv.update = atomic_test_bit(bt_mesh_cdb.flags,
BT_MESH_CDB_IVU_IN_PROGRESS);
net.lowest_avail_addr = bt_mesh_cdb.lowest_avail_addr;
err = settings_save_one("bt/mesh/cdb/Net", &net, sizeof(net));
if (err) {
LOG_ERR("Failed to store Network value");
} else {
LOG_DBG("Stored Network value");
}
}
static void store_cdb_pending_nodes(void)
{
int i;
for (i = 0; i < ARRAY_SIZE(cdb_node_updates); ++i) {
struct node_update *update = &cdb_node_updates[i];
uint16_t addr;
if (update->addr == BT_MESH_ADDR_UNASSIGNED) {
continue;
}
addr = update->addr;
update->addr = BT_MESH_ADDR_UNASSIGNED;
LOG_DBG("addr: 0x%04x, clear: %d", addr, update->clear);
if (update->clear) {
clear_cdb_node(addr);
} else {
struct bt_mesh_cdb_node *node;
node = bt_mesh_cdb_node_get(addr);
if (node) {
store_cdb_node(node);
} else {
LOG_WRN("Node 0x%04x not found", addr);
}
}
}
}
static void store_cdb_pending_keys(void)
{
int i;
for (i = 0; i < ARRAY_SIZE(cdb_key_updates); i++) {
struct key_update *update = &cdb_key_updates[i];
if (!update->valid) {
continue;
}
update->valid = 0U;
if (update->clear) {
if (update->app_key) {
clear_cdb_app_key(update->key_idx);
} else {
clear_cdb_subnet(update->key_idx);
}
} else {
if (update->app_key) {
struct bt_mesh_cdb_app_key *key;
key = bt_mesh_cdb_app_key_get(update->key_idx);
if (key) {
store_cdb_app_key(key);
} else {
LOG_WRN("AppKeyIndex 0x%03x not found", update->key_idx);
}
} else {
struct bt_mesh_cdb_subnet *sub;
sub = bt_mesh_cdb_subnet_get(update->key_idx);
if (sub) {
store_cdb_subnet(sub);
} else {
LOG_WRN("NetKeyIndex 0x%03x not found", update->key_idx);
}
}
}
}
}
void bt_mesh_cdb_pending_store(void)
{
if (atomic_test_and_clear_bit(bt_mesh_cdb.flags,
BT_MESH_CDB_SUBNET_PENDING)) {
if (atomic_test_bit(bt_mesh_cdb.flags,
BT_MESH_CDB_VALID)) {
store_cdb_pending_net();
} else {
clear_cdb_net();
}
}
if (atomic_test_and_clear_bit(bt_mesh_cdb.flags,
BT_MESH_CDB_NODES_PENDING)) {
store_cdb_pending_nodes();
}
if (atomic_test_and_clear_bit(bt_mesh_cdb.flags,
BT_MESH_CDB_KEYS_PENDING)) {
store_cdb_pending_keys();
}
}