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Bluetooth: GATT: Add queuing support

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This adds queueing support for requests that requires a response making
it simpler to use the API. The storage is keep in the parameters of the
request so it is up to the application to define how many can be queued
but in case the application don't want a request to block waiting for
a buffer it can use BLUETOOTH_ATT_REQ_COUNT to control the available
buffers which is recommended in case the requests will be sent from the
RX fiber.

Change-Id: I407c3982a7ecdc4a9eff7172d9d0addd46949783
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
This commit is contained in:
Luiz Augusto von Dentz 2016-08-02 16:23:26 +03:00 • committed by Johan Hedberg
commit 50997f2ccd
12 changed files with 255 additions and 169 deletions
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18
include/bluetooth/att.h
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@ -24,6 +24,8 @@
extern "C" {
#endif
#include <misc/slist.h>
/* Error codes for Error response PDU */
#define BT_ATT_ERR_INVALID_HANDLE 0x01
#define BT_ATT_ERR_READ_NOT_PERMITTED 0x02
@ -48,6 +50,22 @@ extern "C" {
#define BT_ATT_ERR_PROCEDURE_IN_PROGRESS 0xfe
#define BT_ATT_ERR_OUT_OF_RANGE 0xff
typedef void (*bt_att_func_t)(struct bt_conn *conn, uint8_t err,
const void *pdu, uint16_t length,
void *user_data);
typedef void (*bt_att_destroy_t)(void *user_data);
/* ATT request context */
struct bt_att_req {
sys_snode_t node;
bt_att_func_t func;
bt_att_destroy_t destroy;
struct net_buf *buf;
#if defined(CONFIG_BLUETOOTH_SMP)
bool retrying;
#endif /* CONFIG_BLUETOOTH_SMP */
};
#ifdef __cplusplus
}
#endif