/**
* Called when a data packet is received from the controller. This function
* consumes the supplied mbuf, regardless of the outcome.
*
* @param om The incoming data packet, beginning with the
* HCI ACL data header.
*
* @return 0 on success; nonzero on failure.
*/
int
host_hci_data_rx(struct os_mbuf *om)
{
struct hci_data_hdr hci_hdr;
struct ble_hs_conn *conn;
ble_l2cap_rx_fn *rx_cb;
struct os_mbuf *rx_buf;
uint16_t handle;
int rc;
rc = host_hci_data_hdr_strip(om, &hci_hdr);
if (rc == 0) {
BLE_HS_LOG(DEBUG, "host_hci_data_rx(): handle=%u pb=%x len=%u data=",
BLE_HCI_DATA_HANDLE(hci_hdr.hdh_handle_pb_bc),
BLE_HCI_DATA_PB(hci_hdr.hdh_handle_pb_bc),
hci_hdr.hdh_len);
ble_hs_misc_log_mbuf(om);
if (hci_hdr.hdh_len != OS_MBUF_PKTHDR(om)->omp_len) {
rc = BLE_HS_EBADDATA;
} else {
handle = BLE_HCI_DATA_HANDLE(hci_hdr.hdh_handle_pb_bc);
ble_hs_conn_lock();
conn = ble_hs_conn_find(handle);
if (conn == NULL) {
rc = BLE_HS_ENOTCONN;
} else {
rc = ble_l2cap_rx(conn, &hci_hdr, om, &rx_cb, &rx_buf);
om = NULL;
}
ble_hs_conn_unlock();
}
}
os_mbuf_free_chain(om);
if (rc == 0) {
assert(rx_cb != NULL);
assert(rx_buf != NULL);
rc = rx_cb(handle, &rx_buf);
os_mbuf_free_chain(rx_buf);
} else if (rc == BLE_HS_EAGAIN) {
/* More fragments on the way. */
rc = 0;
}
return rc;
}
/**
* Lock restrictions: Caller must NOT lock ble_hs_conn mutex.
*/
uint16_t
ble_att_mtu(uint16_t conn_handle)
{
struct ble_l2cap_chan *chan;
struct ble_hs_conn *conn;
uint16_t mtu;
ble_hs_conn_lock();
ble_att_conn_chan_find(conn_handle, &conn, &chan);
if (chan != NULL) {
mtu = ble_l2cap_chan_mtu(chan);
} else {
mtu = 0;
}
ble_hs_conn_unlock();
return mtu;
}
