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Bluetooth: GATT: Introduce bt_gatt_attr_get_handle

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This introduces bt_gatt_attr_get_handle which can be used to resolve
handles of static attributes.

Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
This commit is contained in:
Luiz Augusto von Dentz 2020-09-03 14:15:05 -07:00 • committed by Carles Cufí
commit 95cec8354c
2 changed files with 23 additions and 6 deletions
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9
include/bluetooth/gatt.h
View file

@ -394,6 +394,15 @@ static inline void bt_gatt_foreach_attr(uint16_t start_handle, uint16_t end_hand
*/
struct bt_gatt_attr *bt_gatt_attr_next(const struct bt_gatt_attr *attr);
/** @brief Get Attribute handle.
*
* @param attr Attribute object.
*
* @return Handle of the corresponding attribute or zero if the attribute
* could not be found.
*/
uint16_t bt_gatt_attr_get_handle(const struct bt_gatt_attr *attr);
/** @brief Get the handle of the characteristic value descriptor.
*
* @param attr A Characteristic Attribute

20
subsys/bluetooth/host/gatt.c
View file

@ -1275,10 +1275,18 @@ static uint8_t get_service_handles(const struct bt_gatt_attr *attr,
return BT_GATT_ITER_CONTINUE;
}
static uint16_t find_static_attr(const struct bt_gatt_attr *attr)
uint16_t bt_gatt_attr_get_handle(const struct bt_gatt_attr *attr)
{
uint16_t handle = 1;
if (!attr) {
return 0;
}
if (attr->handle) {
return attr->handle;
}
Z_STRUCT_SECTION_FOREACH(bt_gatt_service_static, static_svc) {
/* Skip ahead if start is not within service attributes array */
if ((attr < &static_svc->attrs[0]) ||
@ -1302,7 +1310,7 @@ ssize_t bt_gatt_attr_read_included(struct bt_conn *conn,
void *buf, uint16_t len, uint16_t offset)
{
struct bt_gatt_attr *incl = attr->user_data;
uint16_t handle = incl->handle ? : find_static_attr(incl);
uint16_t handle = bt_gatt_attr_get_handle(incl);
struct bt_uuid *uuid = incl->user_data;
struct gatt_incl pdu;
uint8_t value_len;
@ -1347,7 +1355,7 @@ uint16_t bt_gatt_attr_value_handle(const struct bt_gatt_attr *attr)
handle = chrc->value_handle;
if (handle == 0) {
/* Fall back to Zephyr value handle policy */
handle = (attr->handle ? : find_static_attr(attr)) + 1U;
handle = bt_gatt_attr_get_handle(attr) + 1U;
}
}
@ -1514,7 +1522,7 @@ static uint8_t find_next(const struct bt_gatt_attr *attr, uint16_t handle,
struct bt_gatt_attr *bt_gatt_attr_next(const struct bt_gatt_attr *attr)
{
struct bt_gatt_attr *next = NULL;
uint16_t handle = attr->handle ? : find_static_attr(attr);
uint16_t handle = bt_gatt_attr_get_handle(attr);
bt_gatt_foreach_attr(handle + 1, handle + 1, find_next, &next);
@ -2068,7 +2076,7 @@ int bt_gatt_notify_cb(struct bt_conn *conn,
return -ENOTCONN;
}
found.handle = found.attr->handle ? : find_static_attr(found.attr);
found.handle = bt_gatt_attr_get_handle(found.attr);
if (!found.handle) {
return -ENOENT;
}
@ -2145,7 +2153,7 @@ int bt_gatt_indicate(struct bt_conn *conn,
return -ENOTCONN;
}
found.handle = found.attr->handle ? : find_static_attr(found.attr);
found.handle = bt_gatt_attr_get_handle(found.attr);
if (!found.handle) {
return -ENOENT;
}