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Bluetooth: HCI: Add helpers to create events

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This adds bt_hci_evt_create and bt_hci_cmd_complete functions.

Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
This commit is contained in:
Luiz Augusto von Dentz 2020-03-06 13:22:41 -08:00 committed by Johan Hedberg
parent 634faf2b78
commit f710b9be50
2 changed files with 79 additions and 18 deletions
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41
include/drivers/bluetooth/hci_driver.h
View file

@ -194,6 +194,47 @@ int bt_hci_driver_register(const struct bt_hci_driver *drv);
*/
int bt_hci_transport_setup(struct device *dev);
/** Allocate an HCI event buffer.
*
* This function allocates a new buffer for an HCI event. It is given the
* avent code and the total length of the parameters. Upon successful return
* the buffer is ready to have the parameters encoded into it.
*
* @param evt Event OpCode.
* @param len Length of event parameters.
*
* @return Newly allocated buffer.
*/
struct net_buf *bt_hci_evt_create(u8_t evt, u8_t len);
/** Allocate an HCI Command Complete event buffer.
*
* This function allocates a new buffer for HCI Command Complete event.
* It is given the OpCode (encoded e.g. using the BT_OP macro) and the total
* length of the parameters. Upon successful return the buffer is ready to have
* the parameters encoded into it.
*
* @param op Command OpCode.
* @param plen Length of command parameters.
*
* @return Newly allocated buffer.
*/
struct net_buf *bt_hci_cmd_complete_create(u16_t op, u8_t plen);
/** Allocate an HCI Command Status event buffer.
*
* This function allocates a new buffer for HCI Command Status event.
* It is given the OpCode (encoded e.g. using the BT_OP macro) and the status
* code. Upon successful return the buffer is ready to have the parameters
* encoded into it.
*
* @param op Command OpCode.
* @param status Status code.
*
* @return Newly allocated buffer.
*/
struct net_buf *bt_hci_cmd_status_create(u16_t op, u8_t status);
#ifdef __cplusplus
}
#endif

56
subsys/bluetooth/controller/hci/hci.c
View file

@ -121,35 +121,55 @@ void hci_evt_create(struct net_buf *buf, u8_t evt, u8_t len)
hdr->len = len;
}
void *hci_cmd_complete(struct net_buf **buf, u8_t plen)
struct net_buf *bt_hci_evt_create(u8_t evt, u8_t len)
{
struct net_buf *buf;
buf = bt_buf_get_evt(evt, false, K_FOREVER);
hci_evt_create(buf, evt, len);
return buf;
}
struct net_buf *bt_hci_cmd_complete_create(u16_t op, u8_t plen)
{
struct net_buf *buf;
struct bt_hci_evt_cmd_complete *cc;
*buf = bt_buf_get_evt(BT_HCI_EVT_CMD_COMPLETE, false, K_FOREVER);
buf = bt_hci_evt_create(BT_HCI_EVT_CMD_COMPLETE, sizeof(*cc) + plen);
hci_evt_create(*buf, BT_HCI_EVT_CMD_COMPLETE, sizeof(*cc) + plen);
cc = net_buf_add(*buf, sizeof(*cc));
cc = net_buf_add(buf, sizeof(*cc));
cc->ncmd = 1U;
cc->opcode = sys_cpu_to_le16(_opcode);
cc->opcode = sys_cpu_to_le16(op);
return buf;
}
struct net_buf *bt_hci_cmd_status_create(u16_t op, u8_t status)
{
struct net_buf *buf;
struct bt_hci_evt_cmd_status *cs;
buf = bt_hci_evt_create(BT_HCI_EVT_CMD_STATUS, sizeof(*cs));
cs = net_buf_add(buf, sizeof(*cs));
cs->status = status;
cs->ncmd = 1U;
cs->opcode = sys_cpu_to_le16(op);
return buf;
}
void *hci_cmd_complete(struct net_buf **buf, u8_t plen)
{
*buf = bt_hci_cmd_complete_create(_opcode, plen);
return net_buf_add(*buf, plen);
}
static struct net_buf *cmd_status(u8_t status)
{
struct bt_hci_evt_cmd_status *cs;
struct net_buf *buf;
buf = bt_buf_get_evt(BT_HCI_EVT_CMD_STATUS, false, K_FOREVER);
hci_evt_create(buf, BT_HCI_EVT_CMD_STATUS, sizeof(*cs));
cs = net_buf_add(buf, sizeof(*cs));
cs->status = status;
cs->ncmd = 1U;
cs->opcode = sys_cpu_to_le16(_opcode);
return buf;
return bt_hci_cmd_status_create(_opcode, status);
}
static void *meta_evt(struct net_buf *buf, u8_t subevt, u8_t melen)