3700 lines
129 KiB
C
3700 lines
129 KiB
C
/******************************************************************************
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*
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* Copyright (C) 1999-2012 Broadcom Corporation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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******************************************************************************/
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/******************************************************************************
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*
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* This file contains L2CAP utility functions
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*
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******************************************************************************/
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#include <stdlib.h>
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#include <string.h>
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#include "osi/allocator.h"
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#include "device/controller.h"
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#include "stack/bt_types.h"
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#include "stack/hcimsgs.h"
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#include "stack/l2cdefs.h"
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#include "l2c_int.h"
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#include "stack/hcidefs.h"
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#include "stack/btu.h"
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#include "stack/btm_api.h"
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#include "btm_int.h"
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#include "stack/hcidefs.h"
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#include "osi/allocator.h"
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/*******************************************************************************
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**
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** Function l2cu_allocate_lcb
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**
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** Description Look for an unused LCB
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**
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** Returns LCB address or NULL if none found
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**
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*******************************************************************************/
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tL2C_LCB *l2cu_allocate_lcb (BD_ADDR p_bd_addr, BOOLEAN is_bonding, tBT_TRANSPORT transport)
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{
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int xx;
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tL2C_LCB *p_lcb = &l2cb.lcb_pool[0];
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for (xx = 0; xx < MAX_L2CAP_LINKS; xx++, p_lcb++) {
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if (!p_lcb->in_use) {
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btu_free_timer(&p_lcb->timer_entry);
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btu_free_timer(&p_lcb->info_timer_entry);
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btu_free_timer(&p_lcb->upda_con_timer);
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memset (p_lcb, 0, sizeof (tL2C_LCB));
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memcpy (p_lcb->remote_bd_addr, p_bd_addr, BD_ADDR_LEN);
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p_lcb->in_use = TRUE;
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p_lcb->link_state = LST_DISCONNECTED;
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p_lcb->handle = HCI_INVALID_HANDLE;
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p_lcb->link_flush_tout = 0xFFFF;
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p_lcb->timer_entry.param = (TIMER_PARAM_TYPE)p_lcb;
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p_lcb->info_timer_entry.param = (TIMER_PARAM_TYPE)p_lcb;
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p_lcb->upda_con_timer.param = (TIMER_PARAM_TYPE)p_lcb;
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p_lcb->idle_timeout = l2cb.idle_timeout;
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p_lcb->id = 1; /* spec does not allow '0' */
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p_lcb->is_bonding = is_bonding;
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#if (BLE_INCLUDED == TRUE)
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p_lcb->transport = transport;
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p_lcb->tx_data_len = controller_get_interface()->get_ble_default_data_packet_length();
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p_lcb->le_sec_pending_q = fixed_queue_new(QUEUE_SIZE_MAX);
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if (transport == BT_TRANSPORT_LE) {
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l2cb.num_ble_links_active++;
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l2c_ble_link_adjust_allocation();
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} else
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#endif
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{
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l2cb.num_links_active++;
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l2c_link_adjust_allocation();
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}
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p_lcb->link_xmit_data_q = list_new(NULL);
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#if (C2H_FLOW_CONTROL_INCLUDED == TRUE)
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p_lcb->completed_packets = 0;
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#endif ///C2H_FLOW_CONTROL_INCLUDED == TRUE
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return (p_lcb);
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}
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}
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/* If here, no free LCB found */
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return (NULL);
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}
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/*******************************************************************************
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**
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** Function l2cu_update_lcb_4_bonding
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**
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** Description Mark the lcb for bonding. Used when bonding takes place on
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** an existing ACL connection. (Pre-Lisbon devices)
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**
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** Returns Nothing
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**
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*******************************************************************************/
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void l2cu_update_lcb_4_bonding (BD_ADDR p_bd_addr, BOOLEAN is_bonding)
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{
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tL2C_LCB *p_lcb = l2cu_find_lcb_by_bd_addr (p_bd_addr, BT_TRANSPORT_BR_EDR);
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if (p_lcb) {
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p_lcb->is_bonding = is_bonding;
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}
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}
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/*******************************************************************************
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**
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** Function l2cu_release_lcb
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**
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** Description Release an LCB. All timers will be stopped, channels
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** dropped, buffers returned etc.
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**
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** Returns void
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**
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*******************************************************************************/
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void l2cu_release_lcb (tL2C_LCB *p_lcb)
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{
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tL2C_CCB *p_ccb;
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p_lcb->in_use = FALSE;
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p_lcb->is_bonding = FALSE;
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/* Stop and release timers */
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btu_free_timer (&p_lcb->timer_entry);
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memset(&p_lcb->timer_entry, 0, sizeof(TIMER_LIST_ENT));
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btu_free_timer (&p_lcb->info_timer_entry);
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memset(&p_lcb->info_timer_entry, 0, sizeof(TIMER_LIST_ENT));
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btu_free_timer(&p_lcb->upda_con_timer);
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memset(&p_lcb->upda_con_timer, 0, sizeof(TIMER_LIST_ENT));
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/* Release any unfinished L2CAP packet on this link */
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if (p_lcb->p_hcit_rcv_acl) {
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osi_free(p_lcb->p_hcit_rcv_acl);
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p_lcb->p_hcit_rcv_acl = NULL;
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}
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#if BTM_SCO_INCLUDED == TRUE
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#if (BLE_INCLUDED == TRUE)
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if (p_lcb->transport == BT_TRANSPORT_BR_EDR)
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#endif
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{
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/* Release all SCO links */
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btm_remove_sco_links(p_lcb->remote_bd_addr);
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}
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#endif
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if (p_lcb->sent_not_acked > 0) {
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#if (BLE_INCLUDED == TRUE)
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if (p_lcb->transport == BT_TRANSPORT_LE) {
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l2cb.controller_le_xmit_window += p_lcb->sent_not_acked;
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if (l2cb.controller_le_xmit_window > l2cb.num_lm_ble_bufs) {
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l2cb.controller_le_xmit_window = l2cb.num_lm_ble_bufs;
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}
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} else
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#endif
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{
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l2cb.controller_xmit_window += p_lcb->sent_not_acked;
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if (l2cb.controller_xmit_window > l2cb.num_lm_acl_bufs) {
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l2cb.controller_xmit_window = l2cb.num_lm_acl_bufs;
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}
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}
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}
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#if (BLE_INCLUDED == TRUE)
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// Reset BLE connecting flag only if the address matches
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if (!memcmp(l2cb.ble_connecting_bda, p_lcb->remote_bd_addr, BD_ADDR_LEN)) {
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l2cb.is_ble_connecting = FALSE;
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}
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#endif
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#if (L2CAP_NUM_FIXED_CHNLS > 0)
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l2cu_process_fixed_disc_cback(p_lcb);
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#endif
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/* Ensure no CCBs left on this LCB */
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for (p_ccb = p_lcb->ccb_queue.p_first_ccb; p_ccb; p_ccb = p_lcb->ccb_queue.p_first_ccb) {
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l2cu_release_ccb (p_ccb);
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}
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/* Tell BTM Acl management the link was removed */
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if ((p_lcb->link_state == LST_CONNECTED) || (p_lcb->link_state == LST_DISCONNECTING)) {
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#if (BLE_INCLUDED == TRUE)
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btm_acl_removed (p_lcb->remote_bd_addr, p_lcb->transport);
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#else
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btm_acl_removed (p_lcb->remote_bd_addr, BT_TRANSPORT_BR_EDR);
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#endif
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}
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/* Release any held buffers */
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if (p_lcb->link_xmit_data_q) {
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while (!list_is_empty(p_lcb->link_xmit_data_q)) {
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BT_HDR *p_buf = list_front(p_lcb->link_xmit_data_q);
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list_remove(p_lcb->link_xmit_data_q, p_buf);
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osi_free(p_buf);
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}
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list_free(p_lcb->link_xmit_data_q);
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p_lcb->link_xmit_data_q = NULL;
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}
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#if (L2CAP_UCD_INCLUDED == TRUE)
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/* clean up any security pending UCD */
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l2c_ucd_delete_sec_pending_q(p_lcb);
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#endif
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#if BLE_INCLUDED == TRUE
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/* Re-adjust flow control windows make sure it does not go negative */
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if (p_lcb->transport == BT_TRANSPORT_LE) {
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if (l2cb.num_ble_links_active >= 1) {
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l2cb.num_ble_links_active--;
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}
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l2c_ble_link_adjust_allocation();
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} else
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#endif
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{
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if (l2cb.num_links_active >= 1) {
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l2cb.num_links_active--;
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}
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l2c_link_adjust_allocation();
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}
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/* Check for ping outstanding */
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if (p_lcb->p_echo_rsp_cb) {
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tL2CA_ECHO_RSP_CB *p_cb = p_lcb->p_echo_rsp_cb;
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/* Zero out the callback in case app immediately calls us again */
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p_lcb->p_echo_rsp_cb = NULL;
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(*p_cb) (L2CAP_PING_RESULT_NO_LINK);
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}
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#if (BLE_INCLUDED == TRUE)
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/* Check and release all the LE COC connections waiting for security */
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if (p_lcb->le_sec_pending_q)
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{
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while (!fixed_queue_is_empty(p_lcb->le_sec_pending_q))
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{
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tL2CAP_SEC_DATA *p_buf = (tL2CAP_SEC_DATA*) fixed_queue_dequeue(p_lcb->le_sec_pending_q, FIXED_QUEUE_MAX_TIMEOUT);
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if (p_buf->p_callback) {
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p_buf->p_callback(p_lcb->remote_bd_addr, p_lcb->transport, p_buf->p_ref_data, BTM_DEV_RESET);
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}
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osi_free(p_buf);
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}
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fixed_queue_free(p_lcb->le_sec_pending_q, NULL);
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p_lcb->le_sec_pending_q = NULL;
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}
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#endif ///BLE_INCLUDED == TRUE
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#if (C2H_FLOW_CONTROL_INCLUDED == TRUE)
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p_lcb->completed_packets = 0;
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#endif ///C2H_FLOW_CONTROL_INCLUDED == TRUE
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}
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/*******************************************************************************
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**
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** Function l2cu_find_lcb_by_bd_addr
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**
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** Description Look through all active LCBs for a match based on the
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** remote BD address.
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**
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** Returns pointer to matched LCB, or NULL if no match
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**
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*******************************************************************************/
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tL2C_LCB *l2cu_find_lcb_by_bd_addr (BD_ADDR p_bd_addr, tBT_TRANSPORT transport)
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{
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int xx;
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tL2C_LCB *p_lcb = &l2cb.lcb_pool[0];
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for (xx = 0; xx < MAX_L2CAP_LINKS; xx++, p_lcb++) {
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if ((p_lcb->in_use) &&
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#if BLE_INCLUDED == TRUE
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p_lcb->transport == transport &&
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#endif
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(!memcmp (p_lcb->remote_bd_addr, p_bd_addr, BD_ADDR_LEN))) {
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return (p_lcb);
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}
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}
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/* If here, no match found */
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return (NULL);
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}
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/*******************************************************************************
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**
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** Function l2cu_get_conn_role
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**
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** Description Determine the desired role (master or slave) of a link.
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** If already got a slave link, this one must be a master. If
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** already got at least 1 link where we are the master, make this
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** also a master.
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**
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** Returns HCI_ROLE_MASTER or HCI_ROLE_SLAVE
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**
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*******************************************************************************/
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UINT8 l2cu_get_conn_role (tL2C_LCB *p_this_lcb)
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{
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return l2cb.desire_role;
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}
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/*******************************************************************************
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**
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** Function l2c_is_cmd_rejected
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**
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** Description Checks if cmd_code is command or response
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** If a command it will be rejected per spec.
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** This function is used when a illegal packet length is detected
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**
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** Returns BOOLEAN - TRUE if cmd_code is a command and it is rejected,
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** FALSE if response code. (command not rejected)
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**
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*******************************************************************************/
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BOOLEAN l2c_is_cmd_rejected (UINT8 cmd_code, UINT8 id, tL2C_LCB *p_lcb)
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{
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switch (cmd_code) {
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case L2CAP_CMD_CONN_REQ:
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case L2CAP_CMD_CONFIG_REQ:
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case L2CAP_CMD_DISC_REQ:
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case L2CAP_CMD_ECHO_REQ:
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case L2CAP_CMD_INFO_REQ:
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case L2CAP_CMD_AMP_CONN_REQ:
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case L2CAP_CMD_AMP_MOVE_REQ:
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case L2CAP_CMD_BLE_UPDATE_REQ:
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l2cu_send_peer_cmd_reject (p_lcb, L2CAP_CMD_REJ_MTU_EXCEEDED, id, L2CAP_DEFAULT_MTU, 0);
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L2CAP_TRACE_WARNING ("Dumping first Command (%d)", cmd_code);
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return TRUE;
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default: /* Otherwise a response */
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return FALSE;
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}
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}
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/*******************************************************************************
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**
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** Function l2cu_build_header
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**
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** Description Builds the L2CAP command packet header
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**
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** Returns Pointer to allocated packet or NULL if no resources
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**
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*******************************************************************************/
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BT_HDR *l2cu_build_header (tL2C_LCB *p_lcb, UINT16 len, UINT8 cmd, UINT8 id)
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{
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BT_HDR *p_buf = (BT_HDR *)osi_malloc(L2CAP_CMD_BUF_SIZE);
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UINT8 *p;
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if (!p_buf) {
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return (NULL);
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}
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p_buf->offset = L2CAP_SEND_CMD_OFFSET;
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p_buf->len = len + HCI_DATA_PREAMBLE_SIZE + L2CAP_PKT_OVERHEAD + L2CAP_CMD_OVERHEAD;
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p = (UINT8 *)(p_buf + 1) + L2CAP_SEND_CMD_OFFSET;
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/* Put in HCI header - handle + pkt boundary */
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#if (BLE_INCLUDED == TRUE)
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if (p_lcb->transport == BT_TRANSPORT_LE) {
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UINT16_TO_STREAM (p, (p_lcb->handle | (L2CAP_PKT_START_NON_FLUSHABLE << L2CAP_PKT_TYPE_SHIFT)));
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} else
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#endif
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{
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#if (L2CAP_NON_FLUSHABLE_PB_INCLUDED == TRUE)
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UINT16_TO_STREAM (p, p_lcb->handle | l2cb.non_flushable_pbf);
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#else
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UINT16_TO_STREAM (p, (p_lcb->handle | (L2CAP_PKT_START << L2CAP_PKT_TYPE_SHIFT)));
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#endif
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}
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UINT16_TO_STREAM (p, len + L2CAP_PKT_OVERHEAD + L2CAP_CMD_OVERHEAD);
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UINT16_TO_STREAM (p, len + L2CAP_CMD_OVERHEAD);
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#if (BLE_INCLUDED == TRUE)
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if (p_lcb->transport == BT_TRANSPORT_LE) {
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//counter_add("l2cap.ble.tx.bytes", p_buf->len);
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//counter_add("l2cap.ble.tx.pkts", 1);
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UINT16_TO_STREAM (p, L2CAP_BLE_SIGNALLING_CID);
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} else
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#endif
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{
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//counter_add("l2cap.sig.tx.bytes", p_buf->len);
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//counter_add("l2cap.sig.tx.pkts", 1);
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UINT16_TO_STREAM (p, L2CAP_SIGNALLING_CID);
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}
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/* Put in L2CAP command header */
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UINT8_TO_STREAM (p, cmd);
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UINT8_TO_STREAM (p, id);
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UINT16_TO_STREAM (p, len);
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return (p_buf);
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}
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/*******************************************************************************
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**
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** Function l2cu_adj_id
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**
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** Description Checks for valid ID based on specified mask
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** and adjusts the id if invalid.
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**
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** Returns void
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**
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*******************************************************************************/
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void l2cu_adj_id (tL2C_LCB *p_lcb, UINT8 adj_mask)
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{
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if ((adj_mask & L2CAP_ADJ_ZERO_ID) && !p_lcb->id) {
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p_lcb->id++;
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}
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}
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/*******************************************************************************
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**
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** Function l2cu_send_peer_cmd_reject
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**
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** Description Build and send an L2CAP "command reject" message
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** to the peer.
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**
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** Returns void
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**
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*******************************************************************************/
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void l2cu_send_peer_cmd_reject (tL2C_LCB *p_lcb, UINT16 reason, UINT8 rem_id,
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UINT16 p1, UINT16 p2)
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{
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UINT16 param_len;
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BT_HDR *p_buf;
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UINT8 *p;
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/* Put in L2CAP packet header */
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if (reason == L2CAP_CMD_REJ_MTU_EXCEEDED) {
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param_len = 2;
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} else if (reason == L2CAP_CMD_REJ_INVALID_CID) {
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param_len = 4;
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} else {
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param_len = 0;
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}
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if ((p_buf = l2cu_build_header (p_lcb, (UINT16) (L2CAP_CMD_REJECT_LEN + param_len), L2CAP_CMD_REJECT, rem_id)) == NULL ) {
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L2CAP_TRACE_WARNING ("L2CAP - no buffer cmd_rej");
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return;
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}
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p = (UINT8 *)(p_buf + 1) + L2CAP_SEND_CMD_OFFSET + HCI_DATA_PREAMBLE_SIZE +
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L2CAP_PKT_OVERHEAD + L2CAP_CMD_OVERHEAD;
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UINT16_TO_STREAM (p, reason);
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if (param_len >= 2) {
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UINT16_TO_STREAM (p, p1);
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}
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if (param_len >= 4) {
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UINT16_TO_STREAM (p, p2);
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}
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|
|
l2c_link_check_send_pkts (p_lcb, NULL, p_buf);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
**
|
|
** Function l2cu_send_peer_connect_req
|
|
**
|
|
** Description Build and send an L2CAP "connection request" message
|
|
** to the peer.
|
|
**
|
|
** Returns void
|
|
**
|
|
*******************************************************************************/
|
|
void l2cu_send_peer_connect_req (tL2C_CCB *p_ccb)
|
|
{
|
|
BT_HDR *p_buf;
|
|
UINT8 *p;
|
|
|
|
/* Create an identifier for this packet */
|
|
p_ccb->p_lcb->id++;
|
|
l2cu_adj_id(p_ccb->p_lcb, L2CAP_ADJ_ID);
|
|
|
|
p_ccb->local_id = p_ccb->p_lcb->id;
|
|
|
|
if ((p_buf = l2cu_build_header (p_ccb->p_lcb, L2CAP_CONN_REQ_LEN, L2CAP_CMD_CONN_REQ,
|
|
p_ccb->local_id)) == NULL) {
|
|
L2CAP_TRACE_WARNING ("L2CAP - no buffer for conn_req");
|
|
return;
|
|
}
|
|
|
|
p = (UINT8 *)(p_buf + 1) + L2CAP_SEND_CMD_OFFSET + HCI_DATA_PREAMBLE_SIZE +
|
|
L2CAP_PKT_OVERHEAD + L2CAP_CMD_OVERHEAD;
|
|
|
|
UINT16_TO_STREAM (p, p_ccb->p_rcb->real_psm);
|
|
UINT16_TO_STREAM (p, p_ccb->local_cid);
|
|
|
|
l2c_link_check_send_pkts (p_ccb->p_lcb, NULL, p_buf);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
**
|
|
** Function l2cu_send_peer_connect_rsp
|
|
**
|
|
** Description Build and send an L2CAP "connection response" message
|
|
** to the peer.
|
|
**
|
|
** Returns void
|
|
**
|
|
*******************************************************************************/
|
|
void l2cu_send_peer_connect_rsp (tL2C_CCB *p_ccb, UINT16 result, UINT16 status)
|
|
{
|
|
BT_HDR *p_buf;
|
|
UINT8 *p;
|
|
|
|
if (result == L2CAP_CONN_PENDING) {
|
|
/* if we already sent pending response */
|
|
if (p_ccb->flags & CCB_FLAG_SENT_PENDING) {
|
|
return;
|
|
} else {
|
|
p_ccb->flags |= CCB_FLAG_SENT_PENDING;
|
|
}
|
|
}
|
|
|
|
if ((p_buf = l2cu_build_header(p_ccb->p_lcb, L2CAP_CONN_RSP_LEN, L2CAP_CMD_CONN_RSP, p_ccb->remote_id)) == NULL) {
|
|
L2CAP_TRACE_WARNING ("L2CAP - no buffer for conn_rsp");
|
|
return;
|
|
}
|
|
|
|
p = (UINT8 *)(p_buf + 1) + L2CAP_SEND_CMD_OFFSET + HCI_DATA_PREAMBLE_SIZE +
|
|
L2CAP_PKT_OVERHEAD + L2CAP_CMD_OVERHEAD;
|
|
|
|
UINT16_TO_STREAM (p, p_ccb->local_cid);
|
|
UINT16_TO_STREAM (p, p_ccb->remote_cid);
|
|
UINT16_TO_STREAM (p, result);
|
|
UINT16_TO_STREAM (p, status);
|
|
|
|
l2c_link_check_send_pkts (p_ccb->p_lcb, NULL, p_buf);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
**
|
|
** Function l2cu_reject_connection
|
|
**
|
|
** Description Build and send an L2CAP "connection response neg" message
|
|
** to the peer. This function is called when there is no peer
|
|
** CCB (non-existant PSM or no resources).
|
|
**
|
|
** Returns void
|
|
**
|
|
*******************************************************************************/
|
|
void l2cu_reject_connection (tL2C_LCB *p_lcb, UINT16 remote_cid, UINT8 rem_id, UINT16 result)
|
|
{
|
|
BT_HDR *p_buf;
|
|
UINT8 *p;
|
|
|
|
if ((p_buf = l2cu_build_header(p_lcb, L2CAP_CONN_RSP_LEN, L2CAP_CMD_CONN_RSP, rem_id)) == NULL ) {
|
|
L2CAP_TRACE_WARNING ("L2CAP - no buffer for conn_req");
|
|
return;
|
|
}
|
|
|
|
p = (UINT8 *)(p_buf + 1) + L2CAP_SEND_CMD_OFFSET + HCI_DATA_PREAMBLE_SIZE + L2CAP_PKT_OVERHEAD + L2CAP_CMD_OVERHEAD;
|
|
|
|
UINT16_TO_STREAM (p, 0); /* Local CID of 0 */
|
|
UINT16_TO_STREAM (p, remote_cid);
|
|
UINT16_TO_STREAM (p, result);
|
|
UINT16_TO_STREAM (p, 0); /* Status of 0 */
|
|
|
|
l2c_link_check_send_pkts (p_lcb, NULL, p_buf);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
**
|
|
** Function l2cu_send_peer_config_req
|
|
**
|
|
** Description Build and send an L2CAP "configuration request" message
|
|
** to the peer.
|
|
**
|
|
** Returns void
|
|
**
|
|
*******************************************************************************/
|
|
void l2cu_send_peer_config_req (tL2C_CCB *p_ccb, tL2CAP_CFG_INFO *p_cfg)
|
|
{
|
|
BT_HDR *p_buf;
|
|
UINT16 cfg_len = 0;
|
|
UINT8 *p;
|
|
|
|
/* Create an identifier for this packet */
|
|
p_ccb->p_lcb->id++;
|
|
l2cu_adj_id(p_ccb->p_lcb, L2CAP_ADJ_ID);
|
|
|
|
p_ccb->local_id = p_ccb->p_lcb->id;
|
|
|
|
if (p_cfg->mtu_present) {
|
|
cfg_len += L2CAP_CFG_MTU_OPTION_LEN + L2CAP_CFG_OPTION_OVERHEAD;
|
|
}
|
|
if (p_cfg->flush_to_present) {
|
|
cfg_len += L2CAP_CFG_FLUSH_OPTION_LEN + L2CAP_CFG_OPTION_OVERHEAD;
|
|
}
|
|
if (p_cfg->qos_present) {
|
|
cfg_len += L2CAP_CFG_QOS_OPTION_LEN + L2CAP_CFG_OPTION_OVERHEAD;
|
|
}
|
|
if (p_cfg->fcr_present) {
|
|
cfg_len += L2CAP_CFG_FCR_OPTION_LEN + L2CAP_CFG_OPTION_OVERHEAD;
|
|
}
|
|
if (p_cfg->fcs_present) {
|
|
cfg_len += L2CAP_CFG_FCS_OPTION_LEN + L2CAP_CFG_OPTION_OVERHEAD;
|
|
}
|
|
if (p_cfg->ext_flow_spec_present) {
|
|
cfg_len += L2CAP_CFG_EXT_FLOW_OPTION_LEN + L2CAP_CFG_OPTION_OVERHEAD;
|
|
}
|
|
|
|
if ((p_buf = l2cu_build_header (p_ccb->p_lcb, (UINT16) (L2CAP_CONFIG_REQ_LEN + cfg_len),
|
|
L2CAP_CMD_CONFIG_REQ, p_ccb->local_id)) == NULL ) {
|
|
L2CAP_TRACE_WARNING ("L2CAP - no buffer for conn_req");
|
|
return;
|
|
}
|
|
|
|
p = (UINT8 *)(p_buf + 1) + L2CAP_SEND_CMD_OFFSET + HCI_DATA_PREAMBLE_SIZE +
|
|
L2CAP_PKT_OVERHEAD + L2CAP_CMD_OVERHEAD;
|
|
|
|
UINT16_TO_STREAM (p, p_ccb->remote_cid);
|
|
UINT16_TO_STREAM (p, p_cfg->flags); /* Flags (continuation) */
|
|
|
|
/* Now, put the options */
|
|
if (p_cfg->mtu_present) {
|
|
UINT8_TO_STREAM (p, L2CAP_CFG_TYPE_MTU);
|
|
UINT8_TO_STREAM (p, L2CAP_CFG_MTU_OPTION_LEN);
|
|
UINT16_TO_STREAM (p, p_cfg->mtu);
|
|
}
|
|
if (p_cfg->flush_to_present) {
|
|
UINT8_TO_STREAM (p, L2CAP_CFG_TYPE_FLUSH_TOUT);
|
|
UINT8_TO_STREAM (p, L2CAP_CFG_FLUSH_OPTION_LEN);
|
|
UINT16_TO_STREAM (p, p_cfg->flush_to);
|
|
}
|
|
if (p_cfg->qos_present) {
|
|
UINT8_TO_STREAM (p, L2CAP_CFG_TYPE_QOS);
|
|
UINT8_TO_STREAM (p, L2CAP_CFG_QOS_OPTION_LEN);
|
|
UINT8_TO_STREAM (p, p_cfg->qos.qos_flags);
|
|
UINT8_TO_STREAM (p, p_cfg->qos.service_type);
|
|
UINT32_TO_STREAM (p, p_cfg->qos.token_rate);
|
|
UINT32_TO_STREAM (p, p_cfg->qos.token_bucket_size);
|
|
UINT32_TO_STREAM (p, p_cfg->qos.peak_bandwidth);
|
|
UINT32_TO_STREAM (p, p_cfg->qos.latency);
|
|
UINT32_TO_STREAM (p, p_cfg->qos.delay_variation);
|
|
}
|
|
if (p_cfg->fcr_present) {
|
|
UINT8_TO_STREAM (p, L2CAP_CFG_TYPE_FCR);
|
|
UINT8_TO_STREAM (p, L2CAP_CFG_FCR_OPTION_LEN);
|
|
UINT8_TO_STREAM (p, p_cfg->fcr.mode);
|
|
UINT8_TO_STREAM (p, p_cfg->fcr.tx_win_sz);
|
|
UINT8_TO_STREAM (p, p_cfg->fcr.max_transmit);
|
|
UINT16_TO_STREAM (p, p_cfg->fcr.rtrans_tout);
|
|
UINT16_TO_STREAM (p, p_cfg->fcr.mon_tout);
|
|
UINT16_TO_STREAM (p, p_cfg->fcr.mps);
|
|
}
|
|
|
|
if (p_cfg->fcs_present) {
|
|
UINT8_TO_STREAM (p, L2CAP_CFG_TYPE_FCS);
|
|
UINT8_TO_STREAM (p, L2CAP_CFG_FCS_OPTION_LEN);
|
|
UINT8_TO_STREAM (p, p_cfg->fcs);
|
|
}
|
|
|
|
if (p_cfg->ext_flow_spec_present) {
|
|
UINT8_TO_STREAM (p, L2CAP_CFG_TYPE_EXT_FLOW);
|
|
UINT8_TO_STREAM (p, L2CAP_CFG_EXT_FLOW_OPTION_LEN);
|
|
UINT8_TO_STREAM (p, p_cfg->ext_flow_spec.id);
|
|
UINT8_TO_STREAM (p, p_cfg->ext_flow_spec.stype);
|
|
UINT16_TO_STREAM (p, p_cfg->ext_flow_spec.max_sdu_size);
|
|
UINT32_TO_STREAM (p, p_cfg->ext_flow_spec.sdu_inter_time);
|
|
UINT32_TO_STREAM (p, p_cfg->ext_flow_spec.access_latency);
|
|
UINT32_TO_STREAM (p, p_cfg->ext_flow_spec.flush_timeout);
|
|
}
|
|
|
|
l2c_link_check_send_pkts (p_ccb->p_lcb, NULL, p_buf);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
**
|
|
** Function l2cu_send_peer_config_rsp
|
|
**
|
|
** Description Build and send an L2CAP "configuration response" message
|
|
** to the peer.
|
|
**
|
|
** Returns void
|
|
**
|
|
*******************************************************************************/
|
|
void l2cu_send_peer_config_rsp (tL2C_CCB *p_ccb, tL2CAP_CFG_INFO *p_cfg)
|
|
{
|
|
BT_HDR *p_buf;
|
|
UINT16 cfg_len = 0;
|
|
UINT8 *p;
|
|
|
|
/* Create an identifier for this packet */
|
|
if (p_cfg->mtu_present) {
|
|
cfg_len += L2CAP_CFG_MTU_OPTION_LEN + L2CAP_CFG_OPTION_OVERHEAD;
|
|
}
|
|
if (p_cfg->flush_to_present) {
|
|
cfg_len += L2CAP_CFG_FLUSH_OPTION_LEN + L2CAP_CFG_OPTION_OVERHEAD;
|
|
}
|
|
if (p_cfg->qos_present) {
|
|
cfg_len += L2CAP_CFG_QOS_OPTION_LEN + L2CAP_CFG_OPTION_OVERHEAD;
|
|
}
|
|
if (p_cfg->fcr_present) {
|
|
cfg_len += L2CAP_CFG_FCR_OPTION_LEN + L2CAP_CFG_OPTION_OVERHEAD;
|
|
}
|
|
if (p_cfg->ext_flow_spec_present) {
|
|
cfg_len += L2CAP_CFG_EXT_FLOW_OPTION_LEN + L2CAP_CFG_OPTION_OVERHEAD;
|
|
}
|
|
|
|
if ((p_buf = l2cu_build_header (p_ccb->p_lcb, (UINT16)(L2CAP_CONFIG_RSP_LEN + cfg_len),
|
|
L2CAP_CMD_CONFIG_RSP, p_ccb->remote_id)) == NULL ) {
|
|
L2CAP_TRACE_WARNING ("L2CAP - no buffer for conn_req");
|
|
return;
|
|
}
|
|
|
|
p = (UINT8 *)(p_buf + 1) + L2CAP_SEND_CMD_OFFSET + HCI_DATA_PREAMBLE_SIZE + L2CAP_PKT_OVERHEAD + L2CAP_CMD_OVERHEAD;
|
|
|
|
UINT16_TO_STREAM (p, p_ccb->remote_cid);
|
|
UINT16_TO_STREAM (p, p_cfg->flags); /* Flags (continuation) Must match request */
|
|
UINT16_TO_STREAM (p, p_cfg->result);
|
|
|
|
/* Now, put the options */
|
|
if (p_cfg->mtu_present) {
|
|
UINT8_TO_STREAM (p, L2CAP_CFG_TYPE_MTU);
|
|
UINT8_TO_STREAM (p, L2CAP_CFG_MTU_OPTION_LEN);
|
|
UINT16_TO_STREAM (p, p_cfg->mtu);
|
|
}
|
|
if (p_cfg->flush_to_present) {
|
|
UINT8_TO_STREAM (p, L2CAP_CFG_TYPE_FLUSH_TOUT);
|
|
UINT8_TO_STREAM (p, L2CAP_CFG_FLUSH_OPTION_LEN);
|
|
UINT16_TO_STREAM (p, p_cfg->flush_to);
|
|
}
|
|
if (p_cfg->qos_present) {
|
|
UINT8_TO_STREAM (p, L2CAP_CFG_TYPE_QOS);
|
|
UINT8_TO_STREAM (p, L2CAP_CFG_QOS_OPTION_LEN);
|
|
UINT8_TO_STREAM (p, p_cfg->qos.qos_flags);
|
|
UINT8_TO_STREAM (p, p_cfg->qos.service_type);
|
|
UINT32_TO_STREAM (p, p_cfg->qos.token_rate);
|
|
UINT32_TO_STREAM (p, p_cfg->qos.token_bucket_size);
|
|
UINT32_TO_STREAM (p, p_cfg->qos.peak_bandwidth);
|
|
UINT32_TO_STREAM (p, p_cfg->qos.latency);
|
|
UINT32_TO_STREAM (p, p_cfg->qos.delay_variation);
|
|
}
|
|
if (p_cfg->fcr_present) {
|
|
UINT8_TO_STREAM (p, L2CAP_CFG_TYPE_FCR);
|
|
UINT8_TO_STREAM (p, L2CAP_CFG_FCR_OPTION_LEN);
|
|
UINT8_TO_STREAM (p, p_cfg->fcr.mode);
|
|
UINT8_TO_STREAM (p, p_cfg->fcr.tx_win_sz);
|
|
UINT8_TO_STREAM (p, p_cfg->fcr.max_transmit);
|
|
UINT16_TO_STREAM (p, p_ccb->our_cfg.fcr.rtrans_tout);
|
|
UINT16_TO_STREAM (p, p_ccb->our_cfg.fcr.mon_tout);
|
|
UINT16_TO_STREAM (p, p_cfg->fcr.mps);
|
|
}
|
|
|
|
if (p_cfg->ext_flow_spec_present) {
|
|
UINT8_TO_STREAM (p, L2CAP_CFG_TYPE_EXT_FLOW);
|
|
UINT8_TO_STREAM (p, L2CAP_CFG_EXT_FLOW_OPTION_LEN);
|
|
UINT8_TO_STREAM (p, p_cfg->ext_flow_spec.id);
|
|
UINT8_TO_STREAM (p, p_cfg->ext_flow_spec.stype);
|
|
UINT16_TO_STREAM (p, p_cfg->ext_flow_spec.max_sdu_size);
|
|
UINT32_TO_STREAM (p, p_cfg->ext_flow_spec.sdu_inter_time);
|
|
UINT32_TO_STREAM (p, p_cfg->ext_flow_spec.access_latency);
|
|
UINT32_TO_STREAM (p, p_cfg->ext_flow_spec.flush_timeout);
|
|
}
|
|
|
|
l2c_link_check_send_pkts (p_ccb->p_lcb, NULL, p_buf);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
**
|
|
** Function l2cu_send_peer_config_rej
|
|
**
|
|
** Description Build and send an L2CAP "configuration reject" message
|
|
** to the peer.
|
|
**
|
|
** Returns void
|
|
**
|
|
*******************************************************************************/
|
|
void l2cu_send_peer_config_rej (tL2C_CCB *p_ccb, UINT8 *p_data, UINT16 data_len, UINT16 rej_len)
|
|
{
|
|
BT_HDR *p_buf;
|
|
UINT16 len, cfg_len, buf_space, len1;
|
|
UINT8 *p, *p_hci_len, *p_data_end;
|
|
UINT8 cfg_code;
|
|
|
|
L2CAP_TRACE_DEBUG("l2cu_send_peer_config_rej: data_len=%d, rej_len=%d", data_len, rej_len);
|
|
|
|
|
|
len = BT_HDR_SIZE + HCI_DATA_PREAMBLE_SIZE + L2CAP_PKT_OVERHEAD + L2CAP_CMD_OVERHEAD + L2CAP_CONFIG_RSP_LEN;
|
|
len1 = 0xFFFF - len;
|
|
if (rej_len > len1) {
|
|
L2CAP_TRACE_ERROR ("L2CAP - cfg_rej pkt size exceeds buffer design max limit.");
|
|
return;
|
|
}
|
|
|
|
p_buf = (BT_HDR *)osi_malloc (len + rej_len);
|
|
|
|
if (!p_buf) {
|
|
L2CAP_TRACE_ERROR ("L2CAP - no buffer for cfg_rej");
|
|
return;
|
|
}
|
|
|
|
p_buf->offset = L2CAP_SEND_CMD_OFFSET;
|
|
p = (UINT8 *)(p_buf + 1) + L2CAP_SEND_CMD_OFFSET;
|
|
|
|
/* Put in HCI header - handle + pkt boundary */
|
|
#if (L2CAP_NON_FLUSHABLE_PB_INCLUDED == TRUE)
|
|
if (HCI_NON_FLUSHABLE_PB_SUPPORTED(BTM_ReadLocalFeatures ())) {
|
|
UINT16_TO_STREAM (p, (p_ccb->p_lcb->handle | (L2CAP_PKT_START_NON_FLUSHABLE << L2CAP_PKT_TYPE_SHIFT)));
|
|
} else
|
|
#endif
|
|
{
|
|
UINT16_TO_STREAM (p, (p_ccb->p_lcb->handle | (L2CAP_PKT_START << L2CAP_PKT_TYPE_SHIFT)));
|
|
}
|
|
|
|
/* Remember the HCI header length position, and save space for it */
|
|
p_hci_len = p;
|
|
p += 2;
|
|
|
|
/* Put in L2CAP packet header */
|
|
UINT16_TO_STREAM (p, L2CAP_CMD_OVERHEAD + L2CAP_CONFIG_RSP_LEN + rej_len);
|
|
UINT16_TO_STREAM (p, L2CAP_SIGNALLING_CID);
|
|
|
|
/* Put in L2CAP command header */
|
|
UINT8_TO_STREAM (p, L2CAP_CMD_CONFIG_RSP);
|
|
UINT8_TO_STREAM (p, p_ccb->remote_id);
|
|
|
|
UINT16_TO_STREAM (p, L2CAP_CONFIG_RSP_LEN + rej_len);
|
|
|
|
UINT16_TO_STREAM (p, p_ccb->remote_cid);
|
|
UINT16_TO_STREAM (p, 0); /* Flags = 0 (no continuation) */
|
|
UINT16_TO_STREAM (p, L2CAP_CFG_UNKNOWN_OPTIONS);
|
|
|
|
buf_space = rej_len;
|
|
|
|
/* Now, put the rejected options */
|
|
p_data_end = p_data + data_len;
|
|
while (p_data < p_data_end) {
|
|
cfg_code = *p_data;
|
|
cfg_len = *(p_data + 1);
|
|
|
|
switch (cfg_code & 0x7F) {
|
|
/* skip known options */
|
|
case L2CAP_CFG_TYPE_MTU:
|
|
case L2CAP_CFG_TYPE_FLUSH_TOUT:
|
|
case L2CAP_CFG_TYPE_QOS:
|
|
p_data += cfg_len + L2CAP_CFG_OPTION_OVERHEAD;
|
|
break;
|
|
|
|
/* unknown options; copy into rsp if not hints */
|
|
default:
|
|
/* sanity check option length */
|
|
if ((cfg_len + L2CAP_CFG_OPTION_OVERHEAD) <= data_len) {
|
|
if ((cfg_code & 0x80) == 0) {
|
|
if (buf_space >= (cfg_len + L2CAP_CFG_OPTION_OVERHEAD)) {
|
|
memcpy(p, p_data, cfg_len + L2CAP_CFG_OPTION_OVERHEAD);
|
|
p += cfg_len + L2CAP_CFG_OPTION_OVERHEAD;
|
|
buf_space -= (cfg_len + L2CAP_CFG_OPTION_OVERHEAD);
|
|
} else {
|
|
L2CAP_TRACE_WARNING("L2CAP - cfg_rej exceeds allocated buffer");
|
|
p_data = p_data_end; /* force loop exit */
|
|
break;
|
|
}
|
|
}
|
|
p_data += cfg_len + L2CAP_CFG_OPTION_OVERHEAD;
|
|
}
|
|
/* bad length; force loop exit */
|
|
else {
|
|
p_data = p_data_end;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
len = (UINT16) (p - p_hci_len - 2);
|
|
UINT16_TO_STREAM (p_hci_len, len);
|
|
|
|
p_buf->len = len + 4;
|
|
|
|
L2CAP_TRACE_DEBUG ("L2CAP - cfg_rej pkt hci_len=%d, l2cap_len=%d",
|
|
len, (L2CAP_CMD_OVERHEAD + L2CAP_CONFIG_RSP_LEN + rej_len));
|
|
|
|
l2c_link_check_send_pkts (p_ccb->p_lcb, NULL, p_buf);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
**
|
|
** Function l2cu_send_peer_disc_req
|
|
**
|
|
** Description Build and send an L2CAP "disconnect request" message
|
|
** to the peer.
|
|
**
|
|
** Returns void
|
|
**
|
|
*******************************************************************************/
|
|
void l2cu_send_peer_disc_req (tL2C_CCB *p_ccb)
|
|
{
|
|
BT_HDR *p_buf, *p_buf2;
|
|
UINT8 *p;
|
|
|
|
/* Create an identifier for this packet */
|
|
p_ccb->p_lcb->id++;
|
|
l2cu_adj_id(p_ccb->p_lcb, L2CAP_ADJ_ID);
|
|
|
|
p_ccb->local_id = p_ccb->p_lcb->id;
|
|
|
|
if ((p_buf = l2cu_build_header(p_ccb->p_lcb, L2CAP_DISC_REQ_LEN, L2CAP_CMD_DISC_REQ, p_ccb->local_id)) == NULL) {
|
|
L2CAP_TRACE_WARNING ("L2CAP - no buffer for disc_req");
|
|
return;
|
|
}
|
|
|
|
p = (UINT8 *)(p_buf + 1) + L2CAP_SEND_CMD_OFFSET + HCI_DATA_PREAMBLE_SIZE + L2CAP_PKT_OVERHEAD + L2CAP_CMD_OVERHEAD;
|
|
|
|
UINT16_TO_STREAM (p, p_ccb->remote_cid);
|
|
UINT16_TO_STREAM (p, p_ccb->local_cid);
|
|
|
|
/* Move all queued data packets to the LCB. In FCR mode, assume the higher
|
|
layer checks that all buffers are sent before disconnecting.
|
|
*/
|
|
if (p_ccb->peer_cfg.fcr.mode == L2CAP_FCR_BASIC_MODE) {
|
|
while ((p_buf2 = (BT_HDR *)fixed_queue_dequeue(p_ccb->xmit_hold_q, 0)) != NULL) {
|
|
l2cu_set_acl_hci_header (p_buf2, p_ccb);
|
|
l2c_link_check_send_pkts (p_ccb->p_lcb, p_ccb, p_buf2);
|
|
}
|
|
}
|
|
|
|
l2c_link_check_send_pkts (p_ccb->p_lcb, NULL, p_buf);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
**
|
|
** Function l2cu_send_peer_disc_rsp
|
|
**
|
|
** Description Build and send an L2CAP "disconnect response" message
|
|
** to the peer.
|
|
**
|
|
** This function is passed the parameters for the disconnect
|
|
** response instead of the CCB address, as it may be called
|
|
** to send a disconnect response when there is no CCB.
|
|
**
|
|
** Returns void
|
|
**
|
|
*******************************************************************************/
|
|
void l2cu_send_peer_disc_rsp (tL2C_LCB *p_lcb, UINT8 remote_id, UINT16 local_cid,
|
|
UINT16 remote_cid)
|
|
{
|
|
BT_HDR *p_buf;
|
|
UINT8 *p;
|
|
|
|
if (!p_lcb) {
|
|
L2CAP_TRACE_WARNING("lcb already released\n");
|
|
return;
|
|
}
|
|
|
|
if ((p_buf = l2cu_build_header(p_lcb, L2CAP_DISC_RSP_LEN, L2CAP_CMD_DISC_RSP, remote_id)) == NULL) {
|
|
L2CAP_TRACE_WARNING ("L2CAP - no buffer for disc_rsp");
|
|
return;
|
|
}
|
|
|
|
p = (UINT8 *)(p_buf + 1) + L2CAP_SEND_CMD_OFFSET + HCI_DATA_PREAMBLE_SIZE + L2CAP_PKT_OVERHEAD + L2CAP_CMD_OVERHEAD;
|
|
|
|
UINT16_TO_STREAM (p, local_cid);
|
|
UINT16_TO_STREAM (p, remote_cid);
|
|
|
|
l2c_link_check_send_pkts (p_lcb, NULL, p_buf);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
**
|
|
** Function l2cu_send_peer_echo_req
|
|
**
|
|
** Description Build and send an L2CAP "echo request" message
|
|
** to the peer. Note that we do not currently allow
|
|
** data in the echo request.
|
|
**
|
|
** Returns void
|
|
**
|
|
*******************************************************************************/
|
|
void l2cu_send_peer_echo_req (tL2C_LCB *p_lcb, UINT8 *p_data, UINT16 data_len)
|
|
{
|
|
BT_HDR *p_buf;
|
|
UINT8 *p;
|
|
|
|
p_lcb->id++;
|
|
l2cu_adj_id(p_lcb, L2CAP_ADJ_ZERO_ID); /* check for wrap to '0' */
|
|
|
|
if ((p_buf = l2cu_build_header(p_lcb, (UINT16) (L2CAP_ECHO_REQ_LEN + data_len), L2CAP_CMD_ECHO_REQ, p_lcb->id)) == NULL) {
|
|
L2CAP_TRACE_WARNING ("L2CAP - no buffer for echo_req");
|
|
return;
|
|
}
|
|
|
|
p = (UINT8 *)(p_buf + 1) + L2CAP_SEND_CMD_OFFSET + HCI_DATA_PREAMBLE_SIZE + L2CAP_PKT_OVERHEAD + L2CAP_CMD_OVERHEAD;
|
|
|
|
if (data_len) {
|
|
ARRAY_TO_STREAM (p, p_data, data_len);
|
|
}
|
|
|
|
l2c_link_check_send_pkts (p_lcb, NULL, p_buf);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
**
|
|
** Function l2cu_send_peer_echo_rsp
|
|
**
|
|
** Description Build and send an L2CAP "echo response" message
|
|
** to the peer.
|
|
**
|
|
** Returns void
|
|
**
|
|
*******************************************************************************/
|
|
void l2cu_send_peer_echo_rsp (tL2C_LCB *p_lcb, UINT8 id, UINT8 *p_data, UINT16 data_len)
|
|
{
|
|
BT_HDR *p_buf;
|
|
UINT8 *p;
|
|
UINT16 maxlen;
|
|
/* Filter out duplicate IDs or if available buffers are low (intruder checking) */
|
|
if (!id || id == p_lcb->cur_echo_id) {
|
|
/* Dump this request since it is illegal */
|
|
L2CAP_TRACE_WARNING ("L2CAP ignoring duplicate echo request (%d)", id);
|
|
return;
|
|
} else {
|
|
p_lcb->cur_echo_id = id;
|
|
}
|
|
|
|
uint16_t acl_data_size = controller_get_interface()->get_acl_data_size_classic();
|
|
uint16_t acl_packet_size = controller_get_interface()->get_acl_packet_size_classic();
|
|
/* Don't return data if it does not fit in ACL and L2CAP MTU */
|
|
maxlen = (L2CAP_CMD_BUF_SIZE > acl_packet_size) ?
|
|
acl_data_size : (UINT16)L2CAP_CMD_BUF_SIZE;
|
|
maxlen -= (UINT16)(BT_HDR_SIZE + HCI_DATA_PREAMBLE_SIZE + L2CAP_PKT_OVERHEAD +
|
|
L2CAP_CMD_OVERHEAD + L2CAP_ECHO_RSP_LEN);
|
|
|
|
if (data_len > maxlen) {
|
|
data_len = 0;
|
|
}
|
|
|
|
if ((p_buf = l2cu_build_header (p_lcb, (UINT16)(L2CAP_ECHO_RSP_LEN + data_len), L2CAP_CMD_ECHO_RSP, id)) == NULL) {
|
|
L2CAP_TRACE_WARNING ("L2CAP - no buffer for echo_rsp");
|
|
return;
|
|
}
|
|
|
|
p = (UINT8 *)(p_buf + 1) + L2CAP_SEND_CMD_OFFSET + HCI_DATA_PREAMBLE_SIZE +
|
|
L2CAP_PKT_OVERHEAD + L2CAP_CMD_OVERHEAD;
|
|
|
|
if (data_len) {
|
|
ARRAY_TO_STREAM (p, p_data, data_len);
|
|
}
|
|
|
|
l2c_link_check_send_pkts (p_lcb, NULL, p_buf);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
**
|
|
** Function l2cu_send_peer_info_req
|
|
**
|
|
** Description Build and send an L2CAP "info request" message
|
|
** to the peer.
|
|
** Returns void
|
|
**
|
|
*******************************************************************************/
|
|
void l2cu_send_peer_info_req (tL2C_LCB *p_lcb, UINT16 info_type)
|
|
{
|
|
BT_HDR *p_buf;
|
|
UINT8 *p;
|
|
|
|
/* check for wrap and/or BRCM ID */
|
|
p_lcb->id++;
|
|
l2cu_adj_id(p_lcb, L2CAP_ADJ_ID);
|
|
|
|
if ((p_buf = l2cu_build_header(p_lcb, 2, L2CAP_CMD_INFO_REQ, p_lcb->id)) == NULL) {
|
|
L2CAP_TRACE_WARNING ("L2CAP - no buffer for info_req");
|
|
return;
|
|
}
|
|
|
|
L2CAP_TRACE_EVENT ("l2cu_send_peer_info_req: type 0x%04x", info_type);
|
|
|
|
p = (UINT8 *)(p_buf + 1) + L2CAP_SEND_CMD_OFFSET + HCI_DATA_PREAMBLE_SIZE +
|
|
L2CAP_PKT_OVERHEAD + L2CAP_CMD_OVERHEAD;
|
|
|
|
UINT16_TO_STREAM (p, info_type);
|
|
|
|
p_lcb->w4_info_rsp = TRUE;
|
|
btu_start_timer (&p_lcb->info_timer_entry, BTU_TTYPE_L2CAP_INFO, L2CAP_WAIT_INFO_RSP_TOUT);
|
|
|
|
l2c_link_check_send_pkts (p_lcb, NULL, p_buf);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
**
|
|
** Function l2cu_send_peer_info_rsp
|
|
**
|
|
** Description Build and send an L2CAP "info response" message
|
|
** to the peer.
|
|
**
|
|
** Returns void
|
|
**
|
|
*******************************************************************************/
|
|
void l2cu_send_peer_info_rsp (tL2C_LCB *p_lcb, UINT8 remote_id, UINT16 info_type)
|
|
{
|
|
BT_HDR *p_buf;
|
|
UINT8 *p;
|
|
UINT16 len = L2CAP_INFO_RSP_LEN;
|
|
|
|
#if (L2CAP_CONFORMANCE_TESTING == TRUE)
|
|
if ((info_type == L2CAP_EXTENDED_FEATURES_INFO_TYPE)
|
|
&& (l2cb.test_info_resp & (L2CAP_EXTFEA_ENH_RETRANS | L2CAP_EXTFEA_STREAM_MODE |
|
|
L2CAP_EXTFEA_NO_CRC | L2CAP_EXTFEA_EXT_FLOW_SPEC |
|
|
L2CAP_EXTFEA_FIXED_CHNLS | L2CAP_EXTFEA_EXT_WINDOW |
|
|
L2CAP_EXTFEA_UCD_RECEPTION )) )
|
|
#else
|
|
if ((info_type == L2CAP_EXTENDED_FEATURES_INFO_TYPE)
|
|
&& (L2CAP_EXTFEA_SUPPORTED_MASK & (L2CAP_EXTFEA_ENH_RETRANS | L2CAP_EXTFEA_STREAM_MODE |
|
|
L2CAP_EXTFEA_NO_CRC | L2CAP_EXTFEA_FIXED_CHNLS |
|
|
L2CAP_EXTFEA_UCD_RECEPTION )) )
|
|
#endif
|
|
{
|
|
len += L2CAP_EXTENDED_FEATURES_ARRAY_SIZE;
|
|
} else if (info_type == L2CAP_FIXED_CHANNELS_INFO_TYPE) {
|
|
len += L2CAP_FIXED_CHNL_ARRAY_SIZE;
|
|
} else if (info_type == L2CAP_CONNLESS_MTU_INFO_TYPE) {
|
|
len += L2CAP_CONNLESS_MTU_INFO_SIZE;
|
|
}
|
|
|
|
if ((p_buf = l2cu_build_header(p_lcb, len, L2CAP_CMD_INFO_RSP, remote_id)) == NULL) {
|
|
L2CAP_TRACE_WARNING ("L2CAP - no buffer for info_rsp");
|
|
return;
|
|
}
|
|
|
|
p = (UINT8 *)(p_buf + 1) + L2CAP_SEND_CMD_OFFSET + HCI_DATA_PREAMBLE_SIZE +
|
|
L2CAP_PKT_OVERHEAD + L2CAP_CMD_OVERHEAD;
|
|
|
|
UINT16_TO_STREAM (p, info_type);
|
|
|
|
#if (L2CAP_CONFORMANCE_TESTING == TRUE)
|
|
if ((info_type == L2CAP_EXTENDED_FEATURES_INFO_TYPE)
|
|
&& (l2cb.test_info_resp & ( L2CAP_EXTFEA_ENH_RETRANS | L2CAP_EXTFEA_STREAM_MODE
|
|
| L2CAP_EXTFEA_UCD_RECEPTION )) )
|
|
#else
|
|
if ((info_type == L2CAP_EXTENDED_FEATURES_INFO_TYPE)
|
|
&& (L2CAP_EXTFEA_SUPPORTED_MASK & ( L2CAP_EXTFEA_ENH_RETRANS | L2CAP_EXTFEA_STREAM_MODE
|
|
| L2CAP_EXTFEA_UCD_RECEPTION )) )
|
|
#endif
|
|
{
|
|
UINT16_TO_STREAM (p, L2CAP_INFO_RESP_RESULT_SUCCESS);
|
|
#if (BLE_INCLUDED == TRUE)
|
|
if (p_lcb->transport == BT_TRANSPORT_LE) {
|
|
/* optional data are not added for now */
|
|
UINT32_TO_STREAM (p, L2CAP_BLE_EXTFEA_MASK);
|
|
} else
|
|
#endif
|
|
{
|
|
#if L2CAP_CONFORMANCE_TESTING == TRUE
|
|
UINT32_TO_STREAM (p, l2cb.test_info_resp);
|
|
#else
|
|
#if (L2CAP_NUM_FIXED_CHNLS > 0)
|
|
UINT32_TO_STREAM (p, L2CAP_EXTFEA_SUPPORTED_MASK | L2CAP_EXTFEA_FIXED_CHNLS);
|
|
#else
|
|
UINT32_TO_STREAM (p, L2CAP_EXTFEA_SUPPORTED_MASK);
|
|
#endif
|
|
#endif
|
|
}
|
|
} else if (info_type == L2CAP_FIXED_CHANNELS_INFO_TYPE) {
|
|
UINT16_TO_STREAM (p, L2CAP_INFO_RESP_RESULT_SUCCESS);
|
|
memset (p, 0, L2CAP_FIXED_CHNL_ARRAY_SIZE);
|
|
|
|
p[0] = L2CAP_FIXED_CHNL_SIG_BIT;
|
|
|
|
if ( L2CAP_EXTFEA_SUPPORTED_MASK & L2CAP_EXTFEA_UCD_RECEPTION ) {
|
|
p[0] |= L2CAP_FIXED_CHNL_CNCTLESS_BIT;
|
|
}
|
|
|
|
#if (L2CAP_NUM_FIXED_CHNLS > 0)
|
|
{
|
|
int xx;
|
|
|
|
for (xx = 0; xx < L2CAP_NUM_FIXED_CHNLS; xx++)
|
|
if (l2cb.fixed_reg[xx].pL2CA_FixedConn_Cb != NULL) {
|
|
p[(xx + L2CAP_FIRST_FIXED_CHNL) / 8] |= 1 << ((xx + L2CAP_FIRST_FIXED_CHNL) % 8);
|
|
}
|
|
}
|
|
#endif
|
|
} else if (info_type == L2CAP_CONNLESS_MTU_INFO_TYPE) {
|
|
UINT16_TO_STREAM (p, L2CAP_INFO_RESP_RESULT_SUCCESS);
|
|
UINT16_TO_STREAM (p, L2CAP_UCD_MTU);
|
|
} else {
|
|
UINT16_TO_STREAM (p, L2CAP_INFO_RESP_RESULT_NOT_SUPPORTED); /* 'not supported' */
|
|
}
|
|
|
|
l2c_link_check_send_pkts (p_lcb, NULL, p_buf);
|
|
}
|
|
|
|
/******************************************************************************
|
|
**
|
|
** Function l2cu_enqueue_ccb
|
|
**
|
|
** Description queue CCB by priority. The first CCB is highest priority and
|
|
** is served at first. The CCB is queued to an LLCB or an LCB.
|
|
**
|
|
** Returns None
|
|
**
|
|
*******************************************************************************/
|
|
void l2cu_enqueue_ccb (tL2C_CCB *p_ccb)
|
|
{
|
|
tL2C_CCB *p_ccb1;
|
|
tL2C_CCB_Q *p_q = NULL;
|
|
|
|
/* Find out which queue the channel is on
|
|
*/
|
|
if (p_ccb->p_lcb != NULL) {
|
|
p_q = &p_ccb->p_lcb->ccb_queue;
|
|
}
|
|
|
|
if ( (!p_ccb->in_use) || (p_q == NULL) ) {
|
|
L2CAP_TRACE_ERROR ("l2cu_enqueue_ccb CID: 0x%04x ERROR in_use: %u p_lcb: %p",
|
|
p_ccb->local_cid, p_ccb->in_use, p_ccb->p_lcb);
|
|
return;
|
|
}
|
|
|
|
L2CAP_TRACE_DEBUG ("l2cu_enqueue_ccb CID: 0x%04x priority: %d",
|
|
p_ccb->local_cid, p_ccb->ccb_priority);
|
|
|
|
/* If the queue is empty, we go at the front */
|
|
if (!p_q->p_first_ccb) {
|
|
p_q->p_first_ccb = p_q->p_last_ccb = p_ccb;
|
|
p_ccb->p_next_ccb = p_ccb->p_prev_ccb = NULL;
|
|
} else {
|
|
p_ccb1 = p_q->p_first_ccb;
|
|
|
|
while (p_ccb1 != NULL) {
|
|
/* Insert new ccb at the end of the same priority. Lower number, higher priority */
|
|
if (p_ccb->ccb_priority < p_ccb1->ccb_priority) {
|
|
/* Are we at the head of the queue ? */
|
|
if (p_ccb1 == p_q->p_first_ccb) {
|
|
p_q->p_first_ccb = p_ccb;
|
|
} else {
|
|
p_ccb1->p_prev_ccb->p_next_ccb = p_ccb;
|
|
}
|
|
|
|
p_ccb->p_next_ccb = p_ccb1;
|
|
p_ccb->p_prev_ccb = p_ccb1->p_prev_ccb;
|
|
p_ccb1->p_prev_ccb = p_ccb;
|
|
break;
|
|
}
|
|
|
|
p_ccb1 = p_ccb1->p_next_ccb;
|
|
}
|
|
|
|
/* If we are lower then anyone in the list, we go at the end */
|
|
if (!p_ccb1) {
|
|
/* add new ccb at the end of the list */
|
|
p_q->p_last_ccb->p_next_ccb = p_ccb;
|
|
|
|
p_ccb->p_next_ccb = NULL;
|
|
p_ccb->p_prev_ccb = p_q->p_last_ccb;
|
|
p_q->p_last_ccb = p_ccb;
|
|
}
|
|
}
|
|
|
|
#if (L2CAP_ROUND_ROBIN_CHANNEL_SERVICE == TRUE)
|
|
/* Adding CCB into round robin service table of its LCB */
|
|
if (p_ccb->p_lcb != NULL) {
|
|
/* if this is the first channel in this priority group */
|
|
if (p_ccb->p_lcb->rr_serv[p_ccb->ccb_priority].num_ccb == 0 ) {
|
|
/* Set the first channel to this CCB */
|
|
p_ccb->p_lcb->rr_serv[p_ccb->ccb_priority].p_first_ccb = p_ccb;
|
|
/* Set the next serving channel in this group to this CCB */
|
|
p_ccb->p_lcb->rr_serv[p_ccb->ccb_priority].p_serve_ccb = p_ccb;
|
|
/* Initialize quota of this priority group based on its priority */
|
|
p_ccb->p_lcb->rr_serv[p_ccb->ccb_priority].quota = L2CAP_GET_PRIORITY_QUOTA(p_ccb->ccb_priority);
|
|
}
|
|
/* increase number of channels in this group */
|
|
p_ccb->p_lcb->rr_serv[p_ccb->ccb_priority].num_ccb++;
|
|
}
|
|
#endif
|
|
|
|
}
|
|
|
|
/******************************************************************************
|
|
**
|
|
** Function l2cu_dequeue_ccb
|
|
**
|
|
** Description dequeue CCB from a queue
|
|
**
|
|
** Returns -
|
|
**
|
|
*******************************************************************************/
|
|
void l2cu_dequeue_ccb (tL2C_CCB *p_ccb)
|
|
{
|
|
tL2C_CCB_Q *p_q = NULL;
|
|
|
|
L2CAP_TRACE_DEBUG ("l2cu_dequeue_ccb CID: 0x%04x", p_ccb->local_cid);
|
|
|
|
/* Find out which queue the channel is on
|
|
*/
|
|
if (p_ccb->p_lcb != NULL) {
|
|
p_q = &p_ccb->p_lcb->ccb_queue;
|
|
}
|
|
|
|
if ( (!p_ccb->in_use) || (p_q == NULL) || (p_q->p_first_ccb == NULL) ) {
|
|
L2CAP_TRACE_ERROR ("l2cu_dequeue_ccb CID: 0x%04x ERROR in_use: %u p_lcb: %p p_q: %p p_q->p_first_ccb: %p",
|
|
p_ccb->local_cid, p_ccb->in_use, p_ccb->p_lcb, p_q, p_q ? p_q->p_first_ccb : 0);
|
|
return;
|
|
}
|
|
|
|
#if (L2CAP_ROUND_ROBIN_CHANNEL_SERVICE == TRUE)
|
|
/* Removing CCB from round robin service table of its LCB */
|
|
if (p_ccb->p_lcb != NULL) {
|
|
/* decrease number of channels in this priority group */
|
|
p_ccb->p_lcb->rr_serv[p_ccb->ccb_priority].num_ccb--;
|
|
|
|
/* if it was the last channel in the priority group */
|
|
if (p_ccb->p_lcb->rr_serv[p_ccb->ccb_priority].num_ccb == 0 ) {
|
|
p_ccb->p_lcb->rr_serv[p_ccb->ccb_priority].p_first_ccb = NULL;
|
|
p_ccb->p_lcb->rr_serv[p_ccb->ccb_priority].p_serve_ccb = NULL;
|
|
} else {
|
|
/* if it is the first channel of this group */
|
|
if ( p_ccb->p_lcb->rr_serv[p_ccb->ccb_priority].p_first_ccb == p_ccb ) {
|
|
p_ccb->p_lcb->rr_serv[p_ccb->ccb_priority].p_first_ccb = p_ccb->p_next_ccb;
|
|
}
|
|
/* if it is the next serving channel of this group */
|
|
if ( p_ccb->p_lcb->rr_serv[p_ccb->ccb_priority].p_serve_ccb == p_ccb ) {
|
|
/* simply, start serving from the first channel */
|
|
p_ccb->p_lcb->rr_serv[p_ccb->ccb_priority].p_serve_ccb
|
|
= p_ccb->p_lcb->rr_serv[p_ccb->ccb_priority].p_first_ccb;
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
|
|
if (p_ccb == p_q->p_first_ccb) {
|
|
/* We are removing the first in a queue */
|
|
p_q->p_first_ccb = p_ccb->p_next_ccb;
|
|
|
|
if (p_q->p_first_ccb) {
|
|
p_q->p_first_ccb->p_prev_ccb = NULL;
|
|
} else {
|
|
p_q->p_last_ccb = NULL;
|
|
}
|
|
} else if (p_ccb == p_q->p_last_ccb) {
|
|
/* We are removing the last in a queue */
|
|
p_q->p_last_ccb = p_ccb->p_prev_ccb;
|
|
p_q->p_last_ccb->p_next_ccb = NULL;
|
|
} else {
|
|
/* In the middle of a chain. */
|
|
p_ccb->p_prev_ccb->p_next_ccb = p_ccb->p_next_ccb;
|
|
p_ccb->p_next_ccb->p_prev_ccb = p_ccb->p_prev_ccb;
|
|
}
|
|
|
|
p_ccb->p_next_ccb = p_ccb->p_prev_ccb = NULL;
|
|
}
|
|
|
|
/******************************************************************************
|
|
**
|
|
** Function l2cu_change_pri_ccb
|
|
**
|
|
** Description
|
|
**
|
|
** Returns -
|
|
**
|
|
*******************************************************************************/
|
|
void l2cu_change_pri_ccb (tL2C_CCB *p_ccb, tL2CAP_CHNL_PRIORITY priority)
|
|
{
|
|
if (p_ccb->ccb_priority != priority) {
|
|
/* If CCB is not the only guy on the queue */
|
|
if ( (p_ccb->p_next_ccb != NULL) || (p_ccb->p_prev_ccb != NULL) ) {
|
|
L2CAP_TRACE_DEBUG ("Update CCB list in logical link");
|
|
|
|
/* Remove CCB from queue and re-queue it at new priority */
|
|
l2cu_dequeue_ccb (p_ccb);
|
|
|
|
p_ccb->ccb_priority = priority;
|
|
l2cu_enqueue_ccb (p_ccb);
|
|
}
|
|
#if (L2CAP_ROUND_ROBIN_CHANNEL_SERVICE == TRUE)
|
|
else {
|
|
/* If CCB is the only guy on the queue, no need to re-enqueue */
|
|
/* update only round robin service data */
|
|
p_ccb->p_lcb->rr_serv[p_ccb->ccb_priority].num_ccb = 0;
|
|
p_ccb->p_lcb->rr_serv[p_ccb->ccb_priority].p_first_ccb = NULL;
|
|
p_ccb->p_lcb->rr_serv[p_ccb->ccb_priority].p_serve_ccb = NULL;
|
|
|
|
p_ccb->ccb_priority = priority;
|
|
|
|
p_ccb->p_lcb->rr_serv[p_ccb->ccb_priority].p_first_ccb = p_ccb;
|
|
p_ccb->p_lcb->rr_serv[p_ccb->ccb_priority].p_serve_ccb = p_ccb;
|
|
p_ccb->p_lcb->rr_serv[p_ccb->ccb_priority].quota = L2CAP_GET_PRIORITY_QUOTA(p_ccb->ccb_priority);
|
|
p_ccb->p_lcb->rr_serv[p_ccb->ccb_priority].num_ccb = 1;
|
|
}
|
|
#endif
|
|
}
|
|
}
|
|
|
|
/*******************************************************************************
|
|
**
|
|
** Function l2cu_allocate_ccb
|
|
**
|
|
** Description This function allocates a Channel Control Block and
|
|
** attaches it to a link control block. The local CID
|
|
** is also assigned.
|
|
**
|
|
** Returns pointer to CCB, or NULL if none
|
|
**
|
|
*******************************************************************************/
|
|
tL2C_CCB *l2cu_allocate_ccb (tL2C_LCB *p_lcb, UINT16 cid)
|
|
{
|
|
tL2C_CCB *p_ccb;
|
|
tL2C_CCB *p_prev;
|
|
|
|
L2CAP_TRACE_DEBUG ("l2cu_allocate_ccb: cid 0x%04x", cid);
|
|
|
|
if (!l2cb.p_free_ccb_first) {
|
|
return (NULL);
|
|
}
|
|
|
|
/* If a CID was passed in, use that, else take the first free one */
|
|
if (cid == 0) {
|
|
p_ccb = l2cb.p_free_ccb_first;
|
|
l2cb.p_free_ccb_first = p_ccb->p_next_ccb;
|
|
} else {
|
|
p_prev = NULL;
|
|
|
|
p_ccb = &l2cb.ccb_pool[cid - L2CAP_BASE_APPL_CID];
|
|
|
|
if (p_ccb == l2cb.p_free_ccb_first) {
|
|
l2cb.p_free_ccb_first = p_ccb->p_next_ccb;
|
|
} else {
|
|
for (p_prev = l2cb.p_free_ccb_first; p_prev != NULL; p_prev = p_prev->p_next_ccb) {
|
|
if (p_prev->p_next_ccb == p_ccb) {
|
|
p_prev->p_next_ccb = p_ccb->p_next_ccb;
|
|
|
|
if (p_ccb == l2cb.p_free_ccb_last) {
|
|
l2cb.p_free_ccb_last = p_prev;
|
|
}
|
|
|
|
break;
|
|
}
|
|
}
|
|
if (p_prev == NULL) {
|
|
L2CAP_TRACE_ERROR ("l2cu_allocate_ccb: could not find CCB for CID 0x%04x in the free list", cid);
|
|
return NULL;
|
|
}
|
|
}
|
|
}
|
|
|
|
p_ccb->p_next_ccb = p_ccb->p_prev_ccb = NULL;
|
|
|
|
p_ccb->in_use = TRUE;
|
|
|
|
/* Get a CID for the connection */
|
|
p_ccb->local_cid = L2CAP_BASE_APPL_CID + (UINT16)(p_ccb - l2cb.ccb_pool);
|
|
|
|
p_ccb->p_lcb = p_lcb;
|
|
p_ccb->p_rcb = NULL;
|
|
p_ccb->should_free_rcb = false;
|
|
|
|
/* Set priority then insert ccb into LCB queue (if we have an LCB) */
|
|
p_ccb->ccb_priority = L2CAP_CHNL_PRIORITY_LOW;
|
|
|
|
if (p_lcb) {
|
|
l2cu_enqueue_ccb (p_ccb);
|
|
}
|
|
|
|
/* clear what peer wants to configure */
|
|
p_ccb->peer_cfg_bits = 0;
|
|
|
|
/* Put in default values for configuration */
|
|
memset (&p_ccb->our_cfg, 0, sizeof(tL2CAP_CFG_INFO));
|
|
memset (&p_ccb->peer_cfg, 0, sizeof(tL2CAP_CFG_INFO));
|
|
|
|
/* Put in default values for local/peer configurations */
|
|
p_ccb->our_cfg.flush_to = p_ccb->peer_cfg.flush_to = L2CAP_DEFAULT_FLUSH_TO;
|
|
p_ccb->our_cfg.mtu = p_ccb->peer_cfg.mtu = L2CAP_DEFAULT_MTU;
|
|
p_ccb->our_cfg.qos.service_type = p_ccb->peer_cfg.qos.service_type = L2CAP_DEFAULT_SERV_TYPE;
|
|
p_ccb->our_cfg.qos.token_rate = p_ccb->peer_cfg.qos.token_rate = L2CAP_DEFAULT_TOKEN_RATE;
|
|
p_ccb->our_cfg.qos.token_bucket_size = p_ccb->peer_cfg.qos.token_bucket_size = L2CAP_DEFAULT_BUCKET_SIZE;
|
|
p_ccb->our_cfg.qos.peak_bandwidth = p_ccb->peer_cfg.qos.peak_bandwidth = L2CAP_DEFAULT_PEAK_BANDWIDTH;
|
|
p_ccb->our_cfg.qos.latency = p_ccb->peer_cfg.qos.latency = L2CAP_DEFAULT_LATENCY;
|
|
p_ccb->our_cfg.qos.delay_variation = p_ccb->peer_cfg.qos.delay_variation = L2CAP_DEFAULT_DELAY;
|
|
|
|
p_ccb->bypass_fcs = 0;
|
|
memset (&p_ccb->ertm_info, 0, sizeof(tL2CAP_ERTM_INFO));
|
|
p_ccb->peer_cfg_already_rejected = FALSE;
|
|
p_ccb->fcr_cfg_tries = L2CAP_MAX_FCR_CFG_TRIES;
|
|
|
|
/* stop and release timers */
|
|
btu_free_quick_timer(&p_ccb->fcrb.ack_timer);
|
|
memset(&p_ccb->fcrb.ack_timer, 0, sizeof(TIMER_LIST_ENT));
|
|
p_ccb->fcrb.ack_timer.param = (TIMER_PARAM_TYPE)p_ccb;
|
|
|
|
btu_free_quick_timer(&p_ccb->fcrb.mon_retrans_timer);
|
|
memset(&p_ccb->fcrb.mon_retrans_timer, 0, sizeof(TIMER_LIST_ENT));
|
|
p_ccb->fcrb.mon_retrans_timer.param = (TIMER_PARAM_TYPE)p_ccb;
|
|
|
|
// btla-specific ++
|
|
/* CSP408639 Fix: When L2CAP send amp move channel request or receive
|
|
* L2CEVT_AMP_MOVE_REQ do following sequence. Send channel move
|
|
* request -> Stop retrans/monitor timer -> Change channel state to CST_AMP_MOVING. */
|
|
// btla-specific --
|
|
|
|
#if (CLASSIC_BT_INCLUDED == TRUE)
|
|
l2c_fcr_free_timer (p_ccb);
|
|
#endif ///CLASSIC_BT_INCLUDED == TRUE
|
|
p_ccb->ertm_info.preferred_mode = L2CAP_FCR_BASIC_MODE; /* Default mode for channel is basic mode */
|
|
p_ccb->ertm_info.allowed_modes = L2CAP_FCR_CHAN_OPT_BASIC; /* Default mode for channel is basic mode */
|
|
p_ccb->ertm_info.fcr_rx_buf_size = L2CAP_FCR_RX_BUF_SIZE;
|
|
p_ccb->ertm_info.fcr_tx_buf_size = L2CAP_FCR_TX_BUF_SIZE;
|
|
p_ccb->ertm_info.user_rx_buf_size = L2CAP_USER_RX_BUF_SIZE;
|
|
p_ccb->ertm_info.user_tx_buf_size = L2CAP_USER_TX_BUF_SIZE;
|
|
p_ccb->max_rx_mtu = L2CAP_MTU_SIZE;
|
|
p_ccb->tx_mps = L2CAP_FCR_TX_BUF_SIZE - 32;
|
|
|
|
p_ccb->xmit_hold_q = fixed_queue_new(QUEUE_SIZE_MAX);
|
|
#if (CLASSIC_BT_INCLUDED == TRUE)
|
|
p_ccb->fcrb.srej_rcv_hold_q = fixed_queue_new(QUEUE_SIZE_MAX);
|
|
p_ccb->fcrb.retrans_q = fixed_queue_new(QUEUE_SIZE_MAX);
|
|
p_ccb->fcrb.waiting_for_ack_q = fixed_queue_new(QUEUE_SIZE_MAX);
|
|
#endif ///CLASSIC_BT_INCLUDED == TRUE
|
|
|
|
p_ccb->cong_sent = FALSE;
|
|
p_ccb->buff_quota = 2; /* This gets set after config */
|
|
|
|
/* If CCB was reserved Config_Done can already have some value */
|
|
if (cid == 0) {
|
|
p_ccb->config_done = 0;
|
|
} else {
|
|
L2CAP_TRACE_DEBUG ("l2cu_allocate_ccb: cid 0x%04x config_done:0x%x", cid, p_ccb->config_done);
|
|
}
|
|
|
|
p_ccb->chnl_state = CST_CLOSED;
|
|
p_ccb->flags = 0;
|
|
p_ccb->tx_data_rate = L2CAP_CHNL_DATA_RATE_LOW;
|
|
p_ccb->rx_data_rate = L2CAP_CHNL_DATA_RATE_LOW;
|
|
|
|
#if (L2CAP_NON_FLUSHABLE_PB_INCLUDED == TRUE)
|
|
p_ccb->is_flushable = FALSE;
|
|
#endif
|
|
|
|
btu_free_timer(&p_ccb->timer_entry);
|
|
memset(&p_ccb->timer_entry, 0, sizeof(TIMER_LIST_ENT));
|
|
p_ccb->timer_entry.param = (TIMER_PARAM_TYPE)p_ccb;
|
|
p_ccb->timer_entry.in_use = 0;
|
|
|
|
l2c_link_adjust_chnl_allocation ();
|
|
|
|
return (p_ccb);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
**
|
|
** Function l2cu_start_post_bond_timer
|
|
**
|
|
** Description This function starts the ACL Link inactivity timer after
|
|
** dedicated bonding
|
|
** This timer can be longer than the normal link inactivity
|
|
** timer for some platforms.
|
|
**
|
|
** Returns BOOLEAN - TRUE if idle timer started or disconnect initiated
|
|
** FALSE if there's one or more pending CCB's exist
|
|
**
|
|
*******************************************************************************/
|
|
BOOLEAN l2cu_start_post_bond_timer (UINT16 handle)
|
|
{
|
|
UINT16 timeout;
|
|
tL2C_LCB *p_lcb = l2cu_find_lcb_by_handle(handle);
|
|
|
|
if (!p_lcb) {
|
|
return (TRUE);
|
|
}
|
|
|
|
p_lcb->is_bonding = FALSE;
|
|
|
|
/* Only start timer if no control blocks allocated */
|
|
if (p_lcb->ccb_queue.p_first_ccb != NULL) {
|
|
return (FALSE);
|
|
}
|
|
|
|
/* If no channels on the connection, start idle timeout */
|
|
if ( (p_lcb->link_state == LST_CONNECTED) || (p_lcb->link_state == LST_CONNECTING) || (p_lcb->link_state == LST_DISCONNECTING) ) {
|
|
if (p_lcb->idle_timeout == 0) {
|
|
if (btsnd_hcic_disconnect (p_lcb->handle, HCI_ERR_PEER_USER)) {
|
|
p_lcb->link_state = LST_DISCONNECTING;
|
|
timeout = L2CAP_LINK_DISCONNECT_TOUT;
|
|
} else {
|
|
timeout = BT_1SEC_TIMEOUT;
|
|
}
|
|
} else {
|
|
timeout = L2CAP_BONDING_TIMEOUT;
|
|
}
|
|
|
|
if (timeout != 0xFFFF) {
|
|
btu_start_timer (&p_lcb->timer_entry, BTU_TTYPE_L2CAP_LINK, timeout);
|
|
}
|
|
|
|
return (TRUE);
|
|
}
|
|
|
|
return (FALSE);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
**
|
|
** Function l2cu_release_ccb
|
|
**
|
|
** Description This function releases a Channel Control Block. The timer
|
|
** is stopped, any attached buffers freed, and the CCB is removed
|
|
** from the link control block.
|
|
**
|
|
** Returns void
|
|
**
|
|
*******************************************************************************/
|
|
void l2cu_release_ccb (tL2C_CCB *p_ccb)
|
|
{
|
|
tL2C_LCB *p_lcb = p_ccb->p_lcb;
|
|
tL2C_RCB *p_rcb = p_ccb->p_rcb;
|
|
|
|
L2CAP_TRACE_DEBUG ("l2cu_release_ccb: cid 0x%04x in_use: %u", p_ccb->local_cid, p_ccb->in_use);
|
|
|
|
/* If already released, could be race condition */
|
|
if (!p_ccb->in_use) {
|
|
return;
|
|
}
|
|
#if (SDP_INCLUDED == TRUE)
|
|
if (p_rcb && (p_rcb->psm != p_rcb->real_psm)) {
|
|
btm_sec_clr_service_by_psm(p_rcb->psm);
|
|
}
|
|
#endif ///SMP_INCLUDED == TRUE
|
|
if (p_ccb->should_free_rcb) {
|
|
osi_free(p_rcb);
|
|
p_ccb->p_rcb = NULL;
|
|
p_ccb->should_free_rcb = false;
|
|
}
|
|
|
|
if (p_lcb) {
|
|
btm_sec_clr_temp_auth_service (p_lcb->remote_bd_addr);
|
|
}
|
|
|
|
/* Stop and free the timer */
|
|
btu_free_timer (&p_ccb->timer_entry);
|
|
|
|
fixed_queue_free(p_ccb->xmit_hold_q, osi_free_func);
|
|
p_ccb->xmit_hold_q = NULL;
|
|
#if (CLASSIC_BT_INCLUDED == TRUE)
|
|
fixed_queue_free(p_ccb->fcrb.srej_rcv_hold_q, osi_free_func);
|
|
fixed_queue_free(p_ccb->fcrb.retrans_q, osi_free_func);
|
|
fixed_queue_free(p_ccb->fcrb.waiting_for_ack_q, osi_free_func);
|
|
p_ccb->fcrb.srej_rcv_hold_q = NULL;
|
|
p_ccb->fcrb.retrans_q = NULL;
|
|
p_ccb->fcrb.waiting_for_ack_q = NULL;
|
|
#endif ///CLASSIC_BT_INCLUDED == TRUE
|
|
|
|
|
|
#if (CLASSIC_BT_INCLUDED == TRUE)
|
|
l2c_fcr_cleanup (p_ccb);
|
|
#endif ///CLASSIC_BT_INCLUDED == TRUE
|
|
/* Channel may not be assigned to any LCB if it was just pre-reserved */
|
|
if ( (p_lcb) &&
|
|
( (p_ccb->local_cid >= L2CAP_BASE_APPL_CID)
|
|
#if (L2CAP_UCD_INCLUDED == TRUE)
|
|
|| (p_ccb->local_cid == L2CAP_CONNECTIONLESS_CID)
|
|
#endif
|
|
)
|
|
) {
|
|
l2cu_dequeue_ccb (p_ccb);
|
|
|
|
/* Delink the CCB from the LCB */
|
|
p_ccb->p_lcb = NULL;
|
|
}
|
|
|
|
/* Put the CCB back on the free pool */
|
|
if (!l2cb.p_free_ccb_first) {
|
|
l2cb.p_free_ccb_first = p_ccb;
|
|
l2cb.p_free_ccb_last = p_ccb;
|
|
p_ccb->p_next_ccb = NULL;
|
|
p_ccb->p_prev_ccb = NULL;
|
|
} else {
|
|
p_ccb->p_next_ccb = NULL;
|
|
p_ccb->p_prev_ccb = l2cb.p_free_ccb_last;
|
|
l2cb.p_free_ccb_last->p_next_ccb = p_ccb;
|
|
l2cb.p_free_ccb_last = p_ccb;
|
|
}
|
|
|
|
/* Flag as not in use */
|
|
p_ccb->in_use = FALSE;
|
|
|
|
/* If no channels on the connection, start idle timeout */
|
|
if ((p_lcb) && p_lcb->in_use && (p_lcb->link_state == LST_CONNECTED)) {
|
|
if (!p_lcb->ccb_queue.p_first_ccb) {
|
|
l2cu_no_dynamic_ccbs (p_lcb);
|
|
} else {
|
|
/* Link is still active, adjust channel quotas. */
|
|
l2c_link_adjust_chnl_allocation ();
|
|
}
|
|
}
|
|
}
|
|
|
|
/*******************************************************************************
|
|
**
|
|
** Function l2cu_find_ccb_by_remote_cid
|
|
**
|
|
** Description Look through all active CCBs on a link for a match based
|
|
** on the remote CID.
|
|
**
|
|
** Returns pointer to matched CCB, or NULL if no match
|
|
**
|
|
*******************************************************************************/
|
|
tL2C_CCB *l2cu_find_ccb_by_remote_cid (tL2C_LCB *p_lcb, UINT16 remote_cid)
|
|
{
|
|
tL2C_CCB *p_ccb;
|
|
|
|
/* If LCB is NULL, look through all active links */
|
|
if (!p_lcb) {
|
|
return NULL;
|
|
} else {
|
|
for (p_ccb = p_lcb->ccb_queue.p_first_ccb; p_ccb; p_ccb = p_ccb->p_next_ccb)
|
|
if ((p_ccb->in_use) && (p_ccb->remote_cid == remote_cid)) {
|
|
return (p_ccb);
|
|
}
|
|
}
|
|
|
|
/* If here, no match found */
|
|
return (NULL);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
**
|
|
** Function l2cu_allocate_rcb
|
|
**
|
|
** Description Look through the Registration Control Blocks for a free
|
|
** one.
|
|
**
|
|
** Returns Pointer to the RCB or NULL if not found
|
|
**
|
|
*******************************************************************************/
|
|
tL2C_RCB *l2cu_allocate_rcb (UINT16 psm)
|
|
{
|
|
tL2C_RCB *p_rcb = &l2cb.rcb_pool[0];
|
|
UINT16 xx;
|
|
|
|
for (xx = 0; xx < MAX_L2CAP_CLIENTS; xx++, p_rcb++) {
|
|
if (!p_rcb->in_use) {
|
|
p_rcb->in_use = TRUE;
|
|
p_rcb->psm = psm;
|
|
#if (L2CAP_UCD_INCLUDED == TRUE)
|
|
p_rcb->ucd.state = L2C_UCD_STATE_UNUSED;
|
|
#endif
|
|
return (p_rcb);
|
|
}
|
|
}
|
|
|
|
/* If here, no free RCB found */
|
|
return (NULL);
|
|
}
|
|
|
|
#if (BLE_INCLUDED == TRUE)
|
|
/*******************************************************************************
|
|
**
|
|
** Function l2cu_allocate_ble_rcb
|
|
**
|
|
** Description Look through the BLE Registration Control Blocks for a free
|
|
** one.
|
|
**
|
|
** Returns Pointer to the BLE RCB or NULL if not found
|
|
**
|
|
*******************************************************************************/
|
|
tL2C_RCB *l2cu_allocate_ble_rcb (UINT16 psm)
|
|
{
|
|
tL2C_RCB *p_rcb = &l2cb.ble_rcb_pool[0];
|
|
UINT16 xx;
|
|
|
|
for (xx = 0; xx < BLE_MAX_L2CAP_CLIENTS; xx++, p_rcb++)
|
|
{
|
|
if (!p_rcb->in_use)
|
|
{
|
|
p_rcb->in_use = TRUE;
|
|
p_rcb->psm = psm;
|
|
#if (L2CAP_UCD_INCLUDED == TRUE)
|
|
p_rcb->ucd.state = L2C_UCD_STATE_UNUSED;
|
|
#endif
|
|
return (p_rcb);
|
|
}
|
|
}
|
|
|
|
/* If here, no free RCB found */
|
|
return (NULL);
|
|
}
|
|
#endif ///BLE_INCLUDED == TRUE
|
|
|
|
/*******************************************************************************
|
|
**
|
|
** Function l2cu_release_rcb
|
|
**
|
|
** Description Mark an RCB as no longet in use
|
|
**
|
|
** Returns void
|
|
**
|
|
*******************************************************************************/
|
|
void l2cu_release_rcb (tL2C_RCB *p_rcb)
|
|
{
|
|
p_rcb->in_use = FALSE;
|
|
p_rcb->psm = 0;
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
**
|
|
** Function l2cu_disconnect_chnl
|
|
**
|
|
** Description Disconnect a channel. Typically, this is due to either
|
|
** receiving a bad configuration, bad packet or max_retries expiring.
|
|
**
|
|
*******************************************************************************/
|
|
void l2cu_disconnect_chnl (tL2C_CCB *p_ccb)
|
|
{
|
|
UINT16 local_cid = p_ccb->local_cid;
|
|
|
|
if (local_cid >= L2CAP_BASE_APPL_CID) {
|
|
tL2CA_DISCONNECT_IND_CB *p_disc_cb = p_ccb->p_rcb->api.pL2CA_DisconnectInd_Cb;
|
|
|
|
L2CAP_TRACE_WARNING ("L2CAP - disconnect_chnl CID: 0x%04x", local_cid);
|
|
|
|
l2cu_send_peer_disc_req (p_ccb);
|
|
|
|
l2cu_release_ccb (p_ccb);
|
|
|
|
(*p_disc_cb)(local_cid, FALSE);
|
|
} else {
|
|
/* failure on the AMP channel, probably need to disconnect ACL */
|
|
L2CAP_TRACE_ERROR ("L2CAP - disconnect_chnl CID: 0x%04x Ignored", local_cid);
|
|
}
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
**
|
|
** Function l2cu_find_rcb_by_psm
|
|
**
|
|
** Description Look through the Registration Control Blocks to see if
|
|
** anyone registered to handle the PSM in question
|
|
**
|
|
** Returns Pointer to the RCB or NULL if not found
|
|
**
|
|
*******************************************************************************/
|
|
tL2C_RCB *l2cu_find_rcb_by_psm (UINT16 psm)
|
|
{
|
|
tL2C_RCB *p_rcb = &l2cb.rcb_pool[0];
|
|
UINT16 xx;
|
|
|
|
for (xx = 0; xx < MAX_L2CAP_CLIENTS; xx++, p_rcb++) {
|
|
if ((p_rcb->in_use) && (p_rcb->psm == psm)) {
|
|
return (p_rcb);
|
|
}
|
|
}
|
|
|
|
/* If here, no match found */
|
|
return (NULL);
|
|
}
|
|
|
|
#if (BLE_INCLUDED == TRUE)
|
|
/*******************************************************************************
|
|
**
|
|
** Function l2cu_find_ble_rcb_by_psm
|
|
**
|
|
** Description Look through the BLE Registration Control Blocks to see if
|
|
** anyone registered to handle the PSM in question
|
|
**
|
|
** Returns Pointer to the BLE RCB or NULL if not found
|
|
**
|
|
*******************************************************************************/
|
|
tL2C_RCB *l2cu_find_ble_rcb_by_psm (UINT16 psm)
|
|
{
|
|
tL2C_RCB *p_rcb = &l2cb.ble_rcb_pool[0];
|
|
UINT16 xx;
|
|
|
|
for (xx = 0; xx < BLE_MAX_L2CAP_CLIENTS; xx++, p_rcb++)
|
|
{
|
|
if ((p_rcb->in_use) && (p_rcb->psm == psm)) {
|
|
return (p_rcb);
|
|
}
|
|
}
|
|
|
|
/* If here, no match found */
|
|
return (NULL);
|
|
}
|
|
#endif ///BLE_INCLUDED == TRUE
|
|
|
|
|
|
/*******************************************************************************
|
|
**
|
|
** Function l2cu_process_peer_cfg_req
|
|
**
|
|
** Description This function is called when the peer sends us a "config request"
|
|
** message. It extracts the configuration of interest and saves
|
|
** it in the CCB.
|
|
**
|
|
** Note: Negotiation of the FCR channel type is handled internally,
|
|
** all others are passed to the upper layer.
|
|
**
|
|
** Returns UINT8 - L2CAP_PEER_CFG_OK if passed to upper layer,
|
|
** L2CAP_PEER_CFG_UNACCEPTABLE if automatically responded to
|
|
** because parameters are unnacceptable from a specification
|
|
** point of view.
|
|
** L2CAP_PEER_CFG_DISCONNECT if no compatible channel modes
|
|
** between the two devices, and shall be closed.
|
|
**
|
|
*******************************************************************************/
|
|
UINT8 l2cu_process_peer_cfg_req (tL2C_CCB *p_ccb, tL2CAP_CFG_INFO *p_cfg)
|
|
{
|
|
BOOLEAN mtu_ok = TRUE;
|
|
BOOLEAN qos_type_ok = TRUE;
|
|
BOOLEAN flush_to_ok = TRUE;
|
|
BOOLEAN fcr_ok = TRUE;
|
|
#if (CLASSIC_BT_INCLUDED == TRUE)
|
|
UINT8 fcr_status;
|
|
#endif ///CLASSIC_BT_INCLUDED == TRUE
|
|
/* Ignore FCR parameters for basic mode */
|
|
if (!p_cfg->fcr_present) {
|
|
p_cfg->fcr.mode = L2CAP_FCR_BASIC_MODE;
|
|
}
|
|
|
|
/* Save the MTU that our peer can receive */
|
|
if (p_cfg->mtu_present) {
|
|
/* Make sure MTU is at least the minimum */
|
|
if (p_cfg->mtu >= L2CAP_MIN_MTU) {
|
|
/* In basic mode, limit the MTU to our buffer size */
|
|
if ( (p_cfg->fcr_present == FALSE) && (p_cfg->mtu > L2CAP_MTU_SIZE) ) {
|
|
p_cfg->mtu = L2CAP_MTU_SIZE;
|
|
}
|
|
|
|
/* Save the accepted value in case of renegotiation */
|
|
p_ccb->peer_cfg.mtu = p_cfg->mtu;
|
|
p_ccb->peer_cfg.mtu_present = TRUE;
|
|
p_ccb->peer_cfg_bits |= L2CAP_CH_CFG_MASK_MTU;
|
|
} else { /* Illegal MTU value */
|
|
p_cfg->mtu = L2CAP_MIN_MTU;
|
|
mtu_ok = FALSE;
|
|
}
|
|
}
|
|
/* Reload mtu from a previously accepted config request */
|
|
else if (p_ccb->peer_cfg.mtu_present) {
|
|
p_cfg->mtu_present = TRUE;
|
|
p_cfg->mtu = p_ccb->peer_cfg.mtu;
|
|
}
|
|
|
|
/* Verify that the flush timeout is a valid value (0 is illegal) */
|
|
if (p_cfg->flush_to_present) {
|
|
if (!p_cfg->flush_to) {
|
|
p_cfg->flush_to = 0xFFFF; /* Infinite retransmissions (spec default) */
|
|
flush_to_ok = FALSE;
|
|
} else { /* Save the accepted value in case of renegotiation */
|
|
p_ccb->peer_cfg.flush_to_present = TRUE;
|
|
p_ccb->peer_cfg.flush_to = p_cfg->flush_to;
|
|
p_ccb->peer_cfg_bits |= L2CAP_CH_CFG_MASK_FLUSH_TO;
|
|
}
|
|
}
|
|
/* Reload flush_to from a previously accepted config request */
|
|
else if (p_ccb->peer_cfg.flush_to_present) {
|
|
p_cfg->flush_to_present = TRUE;
|
|
p_cfg->flush_to = p_ccb->peer_cfg.flush_to;
|
|
}
|
|
|
|
/* Save the QOS settings the the peer is using */
|
|
if (p_cfg->qos_present) {
|
|
/* Make sure service type is not a reserved value; otherwise let upper
|
|
layer decide if acceptable
|
|
*/
|
|
if (p_cfg->qos.service_type <= GUARANTEED) {
|
|
p_ccb->peer_cfg.qos = p_cfg->qos;
|
|
p_ccb->peer_cfg.qos_present = TRUE;
|
|
p_ccb->peer_cfg_bits |= L2CAP_CH_CFG_MASK_QOS;
|
|
} else { /* Illegal service type value */
|
|
p_cfg->qos.service_type = BEST_EFFORT;
|
|
qos_type_ok = FALSE;
|
|
}
|
|
}
|
|
/* Reload QOS from a previously accepted config request */
|
|
else if (p_ccb->peer_cfg.qos_present) {
|
|
p_cfg->qos_present = TRUE;
|
|
p_cfg->qos = p_ccb->peer_cfg.qos;
|
|
}
|
|
#if (CLASSIC_BT_INCLUDED == TRUE)
|
|
if ((fcr_status = l2c_fcr_process_peer_cfg_req (p_ccb, p_cfg)) == L2CAP_PEER_CFG_DISCONNECT) {
|
|
/* Notify caller to disconnect the channel (incompatible modes) */
|
|
p_cfg->result = L2CAP_CFG_FAILED_NO_REASON;
|
|
p_cfg->mtu_present = p_cfg->qos_present = p_cfg->flush_to_present = 0;
|
|
|
|
return (L2CAP_PEER_CFG_DISCONNECT);
|
|
}
|
|
|
|
fcr_ok = (fcr_status == L2CAP_PEER_CFG_OK);
|
|
#endif ///CLASSIC_BT_INCLUDED == TRUE
|
|
|
|
/* Return any unacceptable parameters */
|
|
if (mtu_ok && flush_to_ok && qos_type_ok && fcr_ok) {
|
|
l2cu_adjust_out_mps (p_ccb);
|
|
return (L2CAP_PEER_CFG_OK);
|
|
} else {
|
|
p_cfg->result = L2CAP_CFG_UNACCEPTABLE_PARAMS;
|
|
|
|
if (mtu_ok) {
|
|
p_cfg->mtu_present = FALSE;
|
|
}
|
|
if (flush_to_ok) {
|
|
p_cfg->flush_to_present = FALSE;
|
|
}
|
|
if (qos_type_ok) {
|
|
p_cfg->qos_present = FALSE;
|
|
}
|
|
if (fcr_ok) {
|
|
p_cfg->fcr_present = FALSE;
|
|
}
|
|
|
|
return (L2CAP_PEER_CFG_UNACCEPTABLE);
|
|
}
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
**
|
|
** Function l2cu_process_peer_cfg_rsp
|
|
**
|
|
** Description This function is called when the peer sends us a "config response"
|
|
** message. It extracts the configuration of interest and saves
|
|
** it in the CCB.
|
|
**
|
|
** Returns void
|
|
**
|
|
*******************************************************************************/
|
|
void l2cu_process_peer_cfg_rsp (tL2C_CCB *p_ccb, tL2CAP_CFG_INFO *p_cfg)
|
|
{
|
|
/* If we wanted QoS and the peer sends us a positive response with QoS, use his values */
|
|
if ( (p_cfg->qos_present) && (p_ccb->our_cfg.qos_present) ) {
|
|
p_ccb->our_cfg.qos = p_cfg->qos;
|
|
}
|
|
|
|
if (p_cfg->fcr_present) {
|
|
/* Save the retransmission and monitor timeout values */
|
|
if (p_cfg->fcr.mode == L2CAP_FCR_ERTM_MODE) {
|
|
p_ccb->peer_cfg.fcr.rtrans_tout = p_cfg->fcr.rtrans_tout;
|
|
p_ccb->peer_cfg.fcr.mon_tout = p_cfg->fcr.mon_tout;
|
|
}
|
|
|
|
/* Calculate the max number of packets for which we can delay sending an ack */
|
|
if (p_cfg->fcr.tx_win_sz < p_ccb->our_cfg.fcr.tx_win_sz) {
|
|
p_ccb->fcrb.max_held_acks = p_cfg->fcr.tx_win_sz / 3;
|
|
} else {
|
|
p_ccb->fcrb.max_held_acks = p_ccb->our_cfg.fcr.tx_win_sz / 3;
|
|
}
|
|
|
|
L2CAP_TRACE_DEBUG ("l2cu_process_peer_cfg_rsp(): peer tx_win_sz: %d, our tx_win_sz: %d, max_held_acks: %d",
|
|
p_cfg->fcr.tx_win_sz, p_ccb->our_cfg.fcr.tx_win_sz, p_ccb->fcrb.max_held_acks);
|
|
}
|
|
}
|
|
|
|
/*******************************************************************************
|
|
**
|
|
** Function l2cu_process_our_cfg_req
|
|
**
|
|
** Description This function is called when we send a "config request"
|
|
** message. It extracts the configuration of interest and saves
|
|
** it in the CCB.
|
|
**
|
|
** Returns void
|
|
**
|
|
*******************************************************************************/
|
|
void l2cu_process_our_cfg_req (tL2C_CCB *p_ccb, tL2CAP_CFG_INFO *p_cfg)
|
|
{
|
|
tL2C_LCB *p_lcb;
|
|
UINT16 hci_flush_to;
|
|
|
|
/* Save the QOS settings we are using for transmit */
|
|
if (p_cfg->qos_present) {
|
|
p_ccb->our_cfg.qos_present = TRUE;
|
|
p_ccb->our_cfg.qos = p_cfg->qos;
|
|
}
|
|
|
|
if (p_cfg->fcr_present) {
|
|
/* Override FCR options if attempting streaming or basic */
|
|
if (p_cfg->fcr.mode == L2CAP_FCR_BASIC_MODE) {
|
|
memset(&p_cfg->fcr, 0, sizeof(tL2CAP_FCR_OPTS));
|
|
} else {
|
|
/* On BR/EDR, timer values are zero in config request */
|
|
/* On class 2 AMP, timer value in config request shall be non-0 processing time */
|
|
/* timer value in config response shall be greater than received processing time */
|
|
p_cfg->fcr.mon_tout = p_cfg->fcr.rtrans_tout = 0;
|
|
|
|
if (p_cfg->fcr.mode == L2CAP_FCR_STREAM_MODE) {
|
|
p_cfg->fcr.max_transmit = p_cfg->fcr.tx_win_sz = 0;
|
|
}
|
|
}
|
|
|
|
/* Set the threshold to send acks (may be updated in the cfg response) */
|
|
p_ccb->fcrb.max_held_acks = p_cfg->fcr.tx_win_sz / 3;
|
|
|
|
/* Include FCS option only if peer can handle it */
|
|
if (p_ccb->p_lcb->peer_ext_fea & L2CAP_EXTFEA_NO_CRC) {
|
|
/* FCS check can be bypassed if peer also desires to bypass */
|
|
if (p_cfg->fcs_present && p_cfg->fcs == L2CAP_CFG_FCS_BYPASS) {
|
|
p_ccb->bypass_fcs |= L2CAP_CFG_FCS_OUR;
|
|
}
|
|
} else {
|
|
p_cfg->fcs_present = FALSE;
|
|
}
|
|
} else {
|
|
p_cfg->fcr.mode = L2CAP_FCR_BASIC_MODE;
|
|
}
|
|
|
|
p_ccb->our_cfg.fcr.mode = p_cfg->fcr.mode;
|
|
p_ccb->our_cfg.fcr_present = p_cfg->fcr_present;
|
|
|
|
/* Check the flush timeout. If it is lower than the current one used */
|
|
/* then we need to adjust the flush timeout sent to the controller */
|
|
if (p_cfg->flush_to_present) {
|
|
if ((p_cfg->flush_to == 0) || (p_cfg->flush_to == L2CAP_NO_AUTOMATIC_FLUSH)) {
|
|
/* don't send invalid flush timeout */
|
|
/* SPEC: The sender of the Request shall specify its flush timeout value */
|
|
/* if it differs from the default value of 0xFFFF */
|
|
p_cfg->flush_to_present = FALSE;
|
|
} else {
|
|
p_ccb->our_cfg.flush_to = p_cfg->flush_to;
|
|
p_lcb = p_ccb->p_lcb;
|
|
|
|
if (p_cfg->flush_to < p_lcb->link_flush_tout) {
|
|
p_lcb->link_flush_tout = p_cfg->flush_to;
|
|
|
|
/* If the timeout is within range of HCI, set the flush timeout */
|
|
if (p_cfg->flush_to <= ((HCI_MAX_AUTO_FLUSH_TOUT * 5) / 8)) {
|
|
/* Convert flush timeout to 0.625 ms units, with round */
|
|
hci_flush_to = ((p_cfg->flush_to * 8) + 3) / 5;
|
|
btsnd_hcic_write_auto_flush_tout (p_lcb->handle, hci_flush_to);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
**
|
|
** Function l2cu_process_our_cfg_rsp
|
|
**
|
|
** Description This function is called when we send the peer a "config response"
|
|
** message. It extracts the configuration of interest and saves
|
|
** it in the CCB.
|
|
**
|
|
** Returns void
|
|
**
|
|
*******************************************************************************/
|
|
#if (CLASSIC_BT_INCLUDED == TRUE)
|
|
void l2cu_process_our_cfg_rsp (tL2C_CCB *p_ccb, tL2CAP_CFG_INFO *p_cfg)
|
|
{
|
|
/* If peer wants QoS, we are allowed to change the values in a positive response */
|
|
if ( (p_cfg->qos_present) && (p_ccb->peer_cfg.qos_present) ) {
|
|
p_ccb->peer_cfg.qos = p_cfg->qos;
|
|
} else {
|
|
p_cfg->qos_present = FALSE;
|
|
}
|
|
|
|
l2c_fcr_adj_our_rsp_options (p_ccb, p_cfg);
|
|
}
|
|
#endif ///CLASSIC_BT_INCLUDED == TRUE
|
|
|
|
|
|
/*******************************************************************************
|
|
**
|
|
** Function l2cu_device_reset
|
|
**
|
|
** Description This function is called when reset of the device is
|
|
** completed. For all active connection simulate HCI_DISC
|
|
**
|
|
** Returns void
|
|
**
|
|
*******************************************************************************/
|
|
void l2cu_device_reset (void)
|
|
{
|
|
int xx;
|
|
tL2C_LCB *p_lcb = &l2cb.lcb_pool[0];
|
|
|
|
for (xx = 0; xx < MAX_L2CAP_LINKS; xx++, p_lcb++) {
|
|
if ((p_lcb->in_use) && (p_lcb->handle != HCI_INVALID_HANDLE)) {
|
|
l2c_link_hci_disc_comp (p_lcb->handle, (UINT8) - 1);
|
|
}
|
|
}
|
|
#if (BLE_INCLUDED == TRUE)
|
|
l2cb.is_ble_connecting = FALSE;
|
|
#endif
|
|
}
|
|
|
|
/*******************************************************************************
|
|
**
|
|
** Function l2cu_create_conn
|
|
**
|
|
** Description This function initiates an acl connection via HCI
|
|
**
|
|
** Returns TRUE if successful, FALSE if gki get buffer fails.
|
|
**
|
|
*******************************************************************************/
|
|
BOOLEAN l2cu_create_conn (tL2C_LCB *p_lcb, tBT_TRANSPORT transport)
|
|
{
|
|
int xx;
|
|
tL2C_LCB *p_lcb_cur = &l2cb.lcb_pool[0];
|
|
#if BTM_SCO_INCLUDED == TRUE
|
|
BOOLEAN is_sco_active;
|
|
#endif
|
|
|
|
#if (BLE_INCLUDED == TRUE)
|
|
tBT_DEVICE_TYPE dev_type;
|
|
tBLE_ADDR_TYPE addr_type = p_lcb->open_addr_type;
|
|
if(addr_type == BLE_ADDR_UNKNOWN_TYPE) {
|
|
BTM_ReadDevInfo(p_lcb->remote_bd_addr, &dev_type, &addr_type);
|
|
}
|
|
|
|
if (transport == BT_TRANSPORT_LE) {
|
|
if (!controller_get_interface()->supports_ble()) {
|
|
return FALSE;
|
|
}
|
|
if(addr_type > BLE_ADDR_TYPE_MAX) {
|
|
addr_type = BLE_ADDR_PUBLIC;
|
|
}
|
|
p_lcb->ble_addr_type = addr_type;
|
|
p_lcb->transport = BT_TRANSPORT_LE;
|
|
|
|
return (l2cble_create_conn(p_lcb));
|
|
}
|
|
#endif
|
|
|
|
/* If there is a connection where we perform as a slave, try to switch roles
|
|
for this connection */
|
|
for (xx = 0, p_lcb_cur = &l2cb.lcb_pool[0]; xx < MAX_L2CAP_LINKS; xx++, p_lcb_cur++) {
|
|
if (p_lcb_cur == p_lcb) {
|
|
continue;
|
|
}
|
|
|
|
if ((p_lcb_cur->in_use) && (p_lcb_cur->link_role == HCI_ROLE_SLAVE)) {
|
|
|
|
#if BTM_SCO_INCLUDED == TRUE
|
|
/* The LMP_switch_req shall be sent only if the ACL logical transport
|
|
is in active mode, when encryption is disabled, and all synchronous
|
|
logical transports on the same physical link are disabled." */
|
|
|
|
/* Check if there is any SCO Active on this BD Address */
|
|
is_sco_active = btm_is_sco_active_by_bdaddr(p_lcb_cur->remote_bd_addr);
|
|
|
|
L2CAP_TRACE_API ("l2cu_create_conn - btm_is_sco_active_by_bdaddr() is_sco_active = %s", \
|
|
(is_sco_active == TRUE) ? "TRUE" : "FALSE");
|
|
|
|
if (is_sco_active == TRUE) {
|
|
continue; /* No Master Slave switch not allowed when SCO Active */
|
|
}
|
|
#endif
|
|
/*4_1_TODO check if btm_cb.devcb.local_features to be used instead */
|
|
if (HCI_SWITCH_SUPPORTED(BTM_ReadLocalFeatures())) {
|
|
/* mark this lcb waiting for switch to be completed and
|
|
start switch on the other one */
|
|
p_lcb->link_state = LST_CONNECTING_WAIT_SWITCH;
|
|
p_lcb->link_role = HCI_ROLE_MASTER;
|
|
|
|
if (BTM_SwitchRole (p_lcb_cur->remote_bd_addr, HCI_ROLE_MASTER, NULL) == BTM_CMD_STARTED) {
|
|
btu_start_timer (&p_lcb->timer_entry, BTU_TTYPE_L2CAP_LINK, L2CAP_LINK_ROLE_SWITCH_TOUT);
|
|
return (TRUE);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
p_lcb->link_state = LST_CONNECTING;
|
|
|
|
return (l2cu_create_conn_after_switch (p_lcb));
|
|
}
|
|
|
|
/*******************************************************************************
|
|
**
|
|
** Function l2cu_get_num_hi_priority
|
|
**
|
|
** Description Gets the number of high priority channels.
|
|
**
|
|
** Returns
|
|
**
|
|
*******************************************************************************/
|
|
UINT8 l2cu_get_num_hi_priority (void)
|
|
{
|
|
UINT8 no_hi = 0;
|
|
int xx;
|
|
tL2C_LCB *p_lcb = &l2cb.lcb_pool[0];
|
|
|
|
for (xx = 0; xx < MAX_L2CAP_LINKS; xx++, p_lcb++) {
|
|
if ((p_lcb->in_use) && (p_lcb->acl_priority == L2CAP_PRIORITY_HIGH)) {
|
|
no_hi++;
|
|
}
|
|
}
|
|
return no_hi;
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
**
|
|
** Function l2cu_create_conn_after_switch
|
|
**
|
|
** Description This function initiates an acl connection via HCI
|
|
** If switch required to create connection it is already done.
|
|
**
|
|
** Returns TRUE if successful, FALSE if gki get buffer fails.
|
|
**
|
|
*******************************************************************************/
|
|
|
|
BOOLEAN l2cu_create_conn_after_switch (tL2C_LCB *p_lcb)
|
|
{
|
|
UINT8 allow_switch = HCI_CR_CONN_ALLOW_SWITCH;
|
|
tBTM_INQ_INFO *p_inq_info;
|
|
UINT8 page_scan_rep_mode;
|
|
UINT8 page_scan_mode;
|
|
UINT16 clock_offset;
|
|
UINT8 *p_features;
|
|
UINT16 num_acl = BTM_GetNumAclLinks();
|
|
tBTM_SEC_DEV_REC *p_dev_rec = btm_find_dev (p_lcb->remote_bd_addr);
|
|
UINT8 no_hi_prio_chs = l2cu_get_num_hi_priority();
|
|
|
|
p_features = BTM_ReadLocalFeatures();
|
|
|
|
L2CAP_TRACE_DEBUG ("l2cu_create_conn_after_switch :%d num_acl:%d no_hi: %d is_bonding:%d",
|
|
l2cb.disallow_switch, num_acl, no_hi_prio_chs, p_lcb->is_bonding);
|
|
/* FW team says that we can participant in 4 piconets
|
|
* typically 3 piconet + 1 for scanning.
|
|
* We can enhance the code to count the number of piconets later. */
|
|
if ( ((!l2cb.disallow_switch && (num_acl < 3)) || (p_lcb->is_bonding && (no_hi_prio_chs == 0)))
|
|
&& HCI_SWITCH_SUPPORTED(p_features)) {
|
|
allow_switch = HCI_CR_CONN_ALLOW_SWITCH;
|
|
} else {
|
|
allow_switch = HCI_CR_CONN_NOT_ALLOW_SWITCH;
|
|
}
|
|
|
|
p_lcb->link_state = LST_CONNECTING;
|
|
|
|
/* Check with the BT manager if details about remote device are known */
|
|
if ((p_inq_info = BTM_InqDbRead(p_lcb->remote_bd_addr)) != NULL) {
|
|
page_scan_rep_mode = p_inq_info->results.page_scan_rep_mode;
|
|
page_scan_mode = p_inq_info->results.page_scan_mode;
|
|
clock_offset = (UINT16)(p_inq_info->results.clock_offset);
|
|
} else {
|
|
/* No info known. Use default settings */
|
|
page_scan_rep_mode = HCI_PAGE_SCAN_REP_MODE_R1;
|
|
page_scan_mode = HCI_MANDATARY_PAGE_SCAN_MODE;
|
|
|
|
clock_offset = (p_dev_rec) ? p_dev_rec->clock_offset : 0;
|
|
}
|
|
|
|
if (!btsnd_hcic_create_conn (p_lcb->remote_bd_addr,
|
|
( HCI_PKT_TYPES_MASK_DM1 | HCI_PKT_TYPES_MASK_DH1
|
|
| HCI_PKT_TYPES_MASK_DM3 | HCI_PKT_TYPES_MASK_DH3
|
|
| HCI_PKT_TYPES_MASK_DM5 | HCI_PKT_TYPES_MASK_DH5 ),
|
|
page_scan_rep_mode,
|
|
page_scan_mode,
|
|
clock_offset,
|
|
allow_switch))
|
|
|
|
{
|
|
L2CAP_TRACE_ERROR ("L2CAP - no buffer for l2cu_create_conn");
|
|
l2cu_release_lcb (p_lcb);
|
|
return (FALSE);
|
|
}
|
|
|
|
btm_acl_update_busy_level (BTM_BLI_PAGE_EVT);
|
|
|
|
btu_start_timer (&p_lcb->timer_entry, BTU_TTYPE_L2CAP_LINK,
|
|
L2CAP_LINK_CONNECT_TOUT);
|
|
|
|
return (TRUE);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
**
|
|
** Function l2cu_find_lcb_by_state
|
|
**
|
|
** Description Look through all active LCBs for a match based on the
|
|
** LCB state.
|
|
**
|
|
** Returns pointer to first matched LCB, or NULL if no match
|
|
**
|
|
*******************************************************************************/
|
|
tL2C_LCB *l2cu_find_lcb_by_state (tL2C_LINK_STATE state)
|
|
{
|
|
UINT16 i;
|
|
tL2C_LCB *p_lcb = &l2cb.lcb_pool[0];
|
|
|
|
for (i = 0; i < MAX_L2CAP_LINKS; i++, p_lcb++) {
|
|
if ((p_lcb->in_use) && (p_lcb->link_state == state)) {
|
|
return (p_lcb);
|
|
}
|
|
}
|
|
|
|
/* If here, no match found */
|
|
return (NULL);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
**
|
|
** Function l2cu_lcb_disconnecting
|
|
**
|
|
** Description On each active lcb, check if the lcb is in disconnecting
|
|
** state, or if there are no ccb's on the lcb (implying
|
|
idle timeout is running), or if last ccb on the link
|
|
is in disconnecting state.
|
|
**
|
|
** Returns TRUE if any of above conditions met, FALSE otherwise
|
|
**
|
|
*******************************************************************************/
|
|
BOOLEAN l2cu_lcb_disconnecting (void)
|
|
{
|
|
tL2C_LCB *p_lcb;
|
|
tL2C_CCB *p_ccb;
|
|
UINT16 i;
|
|
BOOLEAN status = FALSE;
|
|
|
|
p_lcb = &l2cb.lcb_pool[0];
|
|
|
|
for (i = 0; i < MAX_L2CAP_LINKS; i++, p_lcb++) {
|
|
if (p_lcb->in_use) {
|
|
/* no ccbs on lcb, or lcb is in disconnecting state */
|
|
if ((!p_lcb->ccb_queue.p_first_ccb) || (p_lcb->link_state == LST_DISCONNECTING)) {
|
|
status = TRUE;
|
|
break;
|
|
}
|
|
/* only one ccb left on lcb */
|
|
else if (p_lcb->ccb_queue.p_first_ccb == p_lcb->ccb_queue.p_last_ccb) {
|
|
p_ccb = p_lcb->ccb_queue.p_first_ccb;
|
|
|
|
if ((p_ccb->in_use) &&
|
|
((p_ccb->chnl_state == CST_W4_L2CAP_DISCONNECT_RSP) ||
|
|
(p_ccb->chnl_state == CST_W4_L2CA_DISCONNECT_RSP))) {
|
|
status = TRUE;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return status;
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
**
|
|
** Function l2cu_set_acl_priority
|
|
**
|
|
** Description Sets the transmission priority for a channel.
|
|
** (For initial implementation only two values are valid.
|
|
** L2CAP_PRIORITY_NORMAL and L2CAP_PRIORITY_HIGH).
|
|
**
|
|
** Returns TRUE if a valid channel, else FALSE
|
|
**
|
|
*******************************************************************************/
|
|
|
|
BOOLEAN l2cu_set_acl_priority (BD_ADDR bd_addr, UINT8 priority, BOOLEAN reset_after_rs)
|
|
{
|
|
tL2C_LCB *p_lcb;
|
|
UINT8 *pp;
|
|
UINT8 command[HCI_BRCM_ACL_PRIORITY_PARAM_SIZE];
|
|
UINT8 vs_param;
|
|
|
|
//APPL_TRACE_EVENT("SET ACL PRIORITY %d", priority);
|
|
|
|
/* Find the link control block for the acl channel */
|
|
if ((p_lcb = l2cu_find_lcb_by_bd_addr(bd_addr, BT_TRANSPORT_BR_EDR)) == NULL) {
|
|
L2CAP_TRACE_WARNING ("L2CAP - no LCB for L2CA_SetAclPriority");
|
|
return (FALSE);
|
|
}
|
|
|
|
if (BTM_IS_BRCM_CONTROLLER()) {
|
|
/* Called from above L2CAP through API; send VSC if changed */
|
|
if ((!reset_after_rs && (priority != p_lcb->acl_priority)) ||
|
|
/* Called because of a master/slave role switch; if high resend VSC */
|
|
( reset_after_rs && p_lcb->acl_priority == L2CAP_PRIORITY_HIGH)) {
|
|
pp = command;
|
|
|
|
vs_param = (priority == L2CAP_PRIORITY_HIGH) ? HCI_BRCM_ACL_PRIORITY_HIGH : HCI_BRCM_ACL_PRIORITY_LOW;
|
|
|
|
UINT16_TO_STREAM (pp, p_lcb->handle);
|
|
UINT8_TO_STREAM (pp, vs_param);
|
|
|
|
BTM_VendorSpecificCommand (HCI_BRCM_SET_ACL_PRIORITY, HCI_BRCM_ACL_PRIORITY_PARAM_SIZE, command, NULL);
|
|
|
|
/* Adjust lmp buffer allocation for this channel if priority changed */
|
|
if (p_lcb->acl_priority != priority) {
|
|
p_lcb->acl_priority = priority;
|
|
l2c_link_adjust_allocation();
|
|
}
|
|
}
|
|
}
|
|
return (TRUE);
|
|
}
|
|
|
|
#if (L2CAP_NON_FLUSHABLE_PB_INCLUDED == TRUE)
|
|
/******************************************************************************
|
|
**
|
|
** Function l2cu_set_non_flushable_pbf
|
|
**
|
|
** Description set L2CAP_PKT_START_NON_FLUSHABLE if controller supoorts
|
|
**
|
|
** Returns void
|
|
**
|
|
*******************************************************************************/
|
|
void l2cu_set_non_flushable_pbf (BOOLEAN is_supported)
|
|
{
|
|
if (is_supported) {
|
|
l2cb.non_flushable_pbf = (L2CAP_PKT_START_NON_FLUSHABLE << L2CAP_PKT_TYPE_SHIFT);
|
|
} else {
|
|
l2cb.non_flushable_pbf = (L2CAP_PKT_START << L2CAP_PKT_TYPE_SHIFT);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
/*******************************************************************************
|
|
**
|
|
** Function l2cu_resubmit_pending_sec_req
|
|
**
|
|
** Description This function is called when required security procedures
|
|
** are completed and any pending requests can be re-submitted.
|
|
**
|
|
** Returns void
|
|
**
|
|
*******************************************************************************/
|
|
#if (CLASSIC_BT_INCLUDED == TRUE)
|
|
void l2cu_resubmit_pending_sec_req (BD_ADDR p_bda)
|
|
{
|
|
tL2C_LCB *p_lcb;
|
|
tL2C_CCB *p_ccb;
|
|
tL2C_CCB *p_next_ccb;
|
|
int xx;
|
|
L2CAP_TRACE_DEBUG ("l2cu_resubmit_pending_sec_req p_bda: %p", p_bda);
|
|
|
|
/* If we are called with a BDA, only resubmit for that BDA */
|
|
if (p_bda) {
|
|
p_lcb = l2cu_find_lcb_by_bd_addr (p_bda, BT_TRANSPORT_BR_EDR);
|
|
/* If we don't have one, this is an error */
|
|
if (p_lcb) {
|
|
/* For all channels, send the event through their FSMs */
|
|
for (p_ccb = p_lcb->ccb_queue.p_first_ccb; p_ccb; p_ccb = p_next_ccb) {
|
|
p_next_ccb = p_ccb->p_next_ccb;
|
|
l2c_csm_execute (p_ccb, L2CEVT_SEC_RE_SEND_CMD, NULL);
|
|
}
|
|
} else {
|
|
L2CAP_TRACE_WARNING ("l2cu_resubmit_pending_sec_req - unknown BD_ADDR");
|
|
}
|
|
} else {
|
|
/* No BDA pasesed in, so check all links */
|
|
for (xx = 0, p_lcb = &l2cb.lcb_pool[0]; xx < MAX_L2CAP_LINKS; xx++, p_lcb++) {
|
|
if (p_lcb->in_use) {
|
|
/* For all channels, send the event through their FSMs */
|
|
for (p_ccb = p_lcb->ccb_queue.p_first_ccb; p_ccb; p_ccb = p_next_ccb) {
|
|
p_next_ccb = p_ccb->p_next_ccb;
|
|
l2c_csm_execute (p_ccb, L2CEVT_SEC_RE_SEND_CMD, NULL);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
#endif ///CLASSIC_BT_INCLUDED == TRUE
|
|
|
|
#if L2CAP_CONFORMANCE_TESTING == TRUE
|
|
/*******************************************************************************
|
|
**
|
|
** Function l2cu_set_info_rsp_mask
|
|
**
|
|
** Description This function allows the script wrapper to change the
|
|
** info resp mask for conformance testing.
|
|
**
|
|
** Returns pointer to CCB, or NULL if none
|
|
**
|
|
*******************************************************************************/
|
|
void l2cu_set_info_rsp_mask (UINT32 mask)
|
|
{
|
|
l2cb.test_info_resp = mask;
|
|
}
|
|
#endif /* L2CAP_CONFORMANCE_TESTING */
|
|
|
|
/*******************************************************************************
|
|
**
|
|
** Function l2cu_adjust_out_mps
|
|
**
|
|
** Description Sets our MPS based on current controller capabilities
|
|
**
|
|
** Returns void
|
|
**
|
|
*******************************************************************************/
|
|
void l2cu_adjust_out_mps (tL2C_CCB *p_ccb)
|
|
{
|
|
UINT16 packet_size;
|
|
|
|
/* on the tx side MTU is selected based on packet size of the controller */
|
|
packet_size = btm_get_max_packet_size (p_ccb->p_lcb->remote_bd_addr);
|
|
|
|
if (packet_size <= (L2CAP_PKT_OVERHEAD + L2CAP_FCR_OVERHEAD + L2CAP_SDU_LEN_OVERHEAD + L2CAP_FCS_LEN)) {
|
|
/* something is very wrong */
|
|
L2CAP_TRACE_DEBUG ("l2cu_adjust_out_mps bad packet size: %u will use MPS: %u", packet_size, p_ccb->peer_cfg.fcr.mps);
|
|
p_ccb->tx_mps = p_ccb->peer_cfg.fcr.mps;
|
|
} else {
|
|
packet_size -= (L2CAP_PKT_OVERHEAD + L2CAP_FCR_OVERHEAD + L2CAP_SDU_LEN_OVERHEAD + L2CAP_FCS_LEN);
|
|
|
|
/* We try to negotiate MTU that each packet can be split into whole
|
|
number of max packets. For example if link is 1.2 max packet size is 339 bytes.
|
|
At first calculate how many whole packets it is. MAX L2CAP is 1691 + 4 overhead.
|
|
1695, that will be 5 Dh5 packets. Now maximum L2CAP packet is
|
|
5 * 339 = 1695. Minus 4 bytes L2CAP header 1691.
|
|
|
|
For EDR 2.0 packet size is 1027. So we better send RFCOMM packet as 1 3DH5 packet
|
|
1 * 1027 = 1027. Minus 4 bytes L2CAP header 1023. */
|
|
if (p_ccb->peer_cfg.fcr.mps >= packet_size) {
|
|
p_ccb->tx_mps = p_ccb->peer_cfg.fcr.mps / packet_size * packet_size;
|
|
} else {
|
|
p_ccb->tx_mps = p_ccb->peer_cfg.fcr.mps;
|
|
}
|
|
|
|
L2CAP_TRACE_DEBUG ("l2cu_adjust_out_mps use %d Based on peer_cfg.fcr.mps: %u packet_size: %u",
|
|
p_ccb->tx_mps, p_ccb->peer_cfg.fcr.mps, packet_size);
|
|
}
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
**
|
|
** Function l2cu_initialize_fixed_ccb
|
|
**
|
|
** Description Initialize a fixed channel's CCB
|
|
**
|
|
** Returns TRUE or FALSE
|
|
**
|
|
*******************************************************************************/
|
|
BOOLEAN l2cu_initialize_fixed_ccb (tL2C_LCB *p_lcb, UINT16 fixed_cid, tL2CAP_FCR_OPTS *p_fcr)
|
|
{
|
|
#if (L2CAP_NUM_FIXED_CHNLS > 0)
|
|
tL2C_CCB *p_ccb;
|
|
/* If we already have a CCB, then simply return */
|
|
if (p_lcb->p_fixed_ccbs[fixed_cid - L2CAP_FIRST_FIXED_CHNL] != NULL) {
|
|
return (TRUE);
|
|
}
|
|
|
|
if ((p_ccb = l2cu_allocate_ccb (NULL, 0)) == NULL) {
|
|
return (FALSE);
|
|
}
|
|
|
|
btu_stop_timer(&p_lcb->timer_entry);
|
|
|
|
/* Set CID for the connection */
|
|
p_ccb->local_cid = fixed_cid;
|
|
p_ccb->remote_cid = fixed_cid;
|
|
|
|
p_ccb->is_flushable = FALSE;
|
|
|
|
p_ccb->timer_entry.param = (TIMER_PARAM_TYPE)p_ccb;
|
|
|
|
|
|
if (p_fcr) {
|
|
/* Set the FCR parameters. For now, we will use default pools */
|
|
p_ccb->our_cfg.fcr = p_ccb->peer_cfg.fcr = *p_fcr;
|
|
|
|
p_ccb->ertm_info.fcr_rx_buf_size = L2CAP_FCR_RX_BUF_SIZE;
|
|
p_ccb->ertm_info.fcr_tx_buf_size = L2CAP_FCR_TX_BUF_SIZE;
|
|
p_ccb->ertm_info.user_rx_buf_size = L2CAP_USER_RX_BUF_SIZE;
|
|
p_ccb->ertm_info.user_tx_buf_size = L2CAP_USER_TX_BUF_SIZE;
|
|
|
|
p_ccb->fcrb.max_held_acks = p_fcr->tx_win_sz / 3;
|
|
}
|
|
|
|
/* Link ccb to lcb and lcb to ccb */
|
|
p_lcb->p_fixed_ccbs[fixed_cid - L2CAP_FIRST_FIXED_CHNL] = p_ccb;
|
|
p_ccb->p_lcb = p_lcb;
|
|
|
|
/* There is no configuration, so if the link is up, the channel is up */
|
|
if (p_lcb->link_state == LST_CONNECTED) {
|
|
p_ccb->chnl_state = CST_OPEN;
|
|
}
|
|
|
|
/* Set the default idle timeout value to use */
|
|
p_ccb->fixed_chnl_idle_tout = l2cb.fixed_reg[fixed_cid - L2CAP_FIRST_FIXED_CHNL].default_idle_tout;
|
|
#endif
|
|
return (TRUE);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
**
|
|
** Function l2cu_no_dynamic_ccbs
|
|
**
|
|
** Description Handles the case when there are no more dynamic CCBs. If there
|
|
** are any fixed CCBs, start the longest of the fixed CCB timeouts,
|
|
** otherwise start the default link idle timeout or disconnect.
|
|
**
|
|
** Returns void
|
|
**
|
|
*******************************************************************************/
|
|
void l2cu_no_dynamic_ccbs (tL2C_LCB *p_lcb)
|
|
{
|
|
#if (SMP_INCLUDED == TRUE)
|
|
tBTM_STATUS rc;
|
|
#endif ///SMP_INCLUDED == TRUE
|
|
UINT16 timeout = p_lcb->idle_timeout;
|
|
|
|
#if (L2CAP_NUM_FIXED_CHNLS > 0)
|
|
int xx;
|
|
|
|
for (xx = 0; xx < L2CAP_NUM_FIXED_CHNLS; xx++) {
|
|
if ( (p_lcb->p_fixed_ccbs[xx] != NULL) && (p_lcb->p_fixed_ccbs[xx]->fixed_chnl_idle_tout > timeout) ) {
|
|
timeout = p_lcb->p_fixed_ccbs[xx]->fixed_chnl_idle_tout;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
/* If the link is pairing, do not mess with the timeouts */
|
|
if (p_lcb->is_bonding) {
|
|
return;
|
|
}
|
|
|
|
if (timeout == 0) {
|
|
L2CAP_TRACE_DEBUG ("l2cu_no_dynamic_ccbs() IDLE timer 0, disconnecting link");
|
|
#if (SMP_INCLUDED == TRUE)
|
|
rc = btm_sec_disconnect (p_lcb->handle, HCI_ERR_PEER_USER);
|
|
if (rc == BTM_CMD_STARTED) {
|
|
l2cu_process_fixed_disc_cback(p_lcb);
|
|
p_lcb->link_state = LST_DISCONNECTING;
|
|
timeout = L2CAP_LINK_DISCONNECT_TOUT;
|
|
} else if (rc == BTM_SUCCESS) {
|
|
l2cu_process_fixed_disc_cback(p_lcb);
|
|
/* BTM SEC will make sure that link is release (probably after pairing is done) */
|
|
p_lcb->link_state = LST_DISCONNECTING;
|
|
timeout = 0xFFFF;
|
|
} else if ( (p_lcb->is_bonding)
|
|
&& (btsnd_hcic_disconnect (p_lcb->handle, HCI_ERR_PEER_USER)) ) {
|
|
l2cu_process_fixed_disc_cback(p_lcb);
|
|
p_lcb->link_state = LST_DISCONNECTING;
|
|
timeout = L2CAP_LINK_DISCONNECT_TOUT;
|
|
} else {
|
|
/* probably no buffer to send disconnect */
|
|
timeout = BT_1SEC_TIMEOUT;
|
|
}
|
|
#else
|
|
if (btsnd_hcic_disconnect (p_lcb->handle, HCI_ERR_PEER_USER)) {
|
|
l2cu_process_fixed_disc_cback(p_lcb);
|
|
p_lcb->link_state = LST_DISCONNECTING;
|
|
timeout = L2CAP_LINK_DISCONNECT_TOUT;
|
|
} else {
|
|
timeout = BT_1SEC_TIMEOUT;
|
|
}
|
|
#endif ///SMP_INCLUDED == TRUE
|
|
|
|
}
|
|
|
|
if (timeout != 0xFFFF) {
|
|
L2CAP_TRACE_DEBUG ("l2cu_no_dynamic_ccbs() starting IDLE timeout: %d", timeout);
|
|
btu_start_timer (&p_lcb->timer_entry, BTU_TTYPE_L2CAP_LINK, timeout);
|
|
} else {
|
|
btu_stop_timer(&p_lcb->timer_entry);
|
|
}
|
|
}
|
|
|
|
#if (L2CAP_NUM_FIXED_CHNLS > 0)
|
|
/*******************************************************************************
|
|
**
|
|
** Function l2cu_process_fixed_chnl_resp
|
|
**
|
|
** Description handle a fixed channel response (or lack thereof)
|
|
** if the link failed, or a fixed channel response was
|
|
** not received, the bitfield is all zeros.
|
|
**
|
|
*******************************************************************************/
|
|
void l2cu_process_fixed_chnl_resp (tL2C_LCB *p_lcb)
|
|
{
|
|
L2CAP_TRACE_DEBUG("%s",__func__);
|
|
#if (BLE_INCLUDED == TRUE)
|
|
if (p_lcb->transport == BT_TRANSPORT_BR_EDR) {
|
|
/* ignore all not assigned BR/EDR channels */
|
|
p_lcb->peer_chnl_mask[0] &= (L2CAP_FIXED_CHNL_SIG_BIT | \
|
|
L2CAP_FIXED_CHNL_CNCTLESS_BIT | \
|
|
L2CAP_FIXED_CHNL_SMP_BR_BIT);
|
|
} else {
|
|
p_lcb->peer_chnl_mask[0] = l2cb.l2c_ble_fixed_chnls_mask;
|
|
}
|
|
#endif
|
|
|
|
/* Tell all registered fixed channels about the connection */
|
|
for (int xx = 0; xx < L2CAP_NUM_FIXED_CHNLS; xx++) {
|
|
#if BLE_INCLUDED == TRUE
|
|
/* skip sending LE fix channel callbacks on BR/EDR links */
|
|
if (p_lcb->transport == BT_TRANSPORT_BR_EDR &&
|
|
xx + L2CAP_FIRST_FIXED_CHNL >= L2CAP_ATT_CID &&
|
|
xx + L2CAP_FIRST_FIXED_CHNL <= L2CAP_SMP_CID) {
|
|
continue;
|
|
}
|
|
#endif
|
|
if (l2cb.fixed_reg[xx].pL2CA_FixedConn_Cb != NULL) {
|
|
if (p_lcb->peer_chnl_mask[(xx + L2CAP_FIRST_FIXED_CHNL) / 8]
|
|
& (1 << ((xx + L2CAP_FIRST_FIXED_CHNL) % 8))) {
|
|
if (p_lcb->p_fixed_ccbs[xx]) {
|
|
p_lcb->p_fixed_ccbs[xx]->chnl_state = CST_OPEN;
|
|
}
|
|
#if BLE_INCLUDED == TRUE
|
|
(*l2cb.fixed_reg[xx].pL2CA_FixedConn_Cb)(xx + L2CAP_FIRST_FIXED_CHNL,
|
|
p_lcb->remote_bd_addr, TRUE, 0, p_lcb->transport);
|
|
#else
|
|
(*l2cb.fixed_reg[xx].pL2CA_FixedConn_Cb)(xx + L2CAP_FIRST_FIXED_CHNL,
|
|
p_lcb->remote_bd_addr, TRUE, 0, BT_TRANSPORT_BR_EDR);
|
|
#endif
|
|
} else {
|
|
#if BLE_INCLUDED == TRUE
|
|
(*l2cb.fixed_reg[xx].pL2CA_FixedConn_Cb)(xx + L2CAP_FIRST_FIXED_CHNL,
|
|
p_lcb->remote_bd_addr, FALSE, p_lcb->disc_reason, p_lcb->transport);
|
|
#else
|
|
(*l2cb.fixed_reg[xx].pL2CA_FixedConn_Cb)(xx + L2CAP_FIRST_FIXED_CHNL,
|
|
p_lcb->remote_bd_addr, FALSE, p_lcb->disc_reason, BT_TRANSPORT_BR_EDR);
|
|
#endif
|
|
|
|
if (p_lcb->p_fixed_ccbs[xx]) {
|
|
l2cu_release_ccb (p_lcb->p_fixed_ccbs[xx]);
|
|
p_lcb->p_fixed_ccbs[xx] = NULL;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
|
|
|
|
/*******************************************************************************
|
|
**
|
|
** Function l2cu_process_fixed_disc_cback
|
|
**
|
|
** Description send l2cap fixed channel disconnection callback to application
|
|
**
|
|
**
|
|
** Returns void
|
|
**
|
|
*******************************************************************************/
|
|
void l2cu_process_fixed_disc_cback (tL2C_LCB *p_lcb)
|
|
{
|
|
#if (L2CAP_NUM_FIXED_CHNLS > 0)
|
|
|
|
/* Select peer channels mask to use depending on transport */
|
|
UINT8 peer_channel_mask = p_lcb->peer_chnl_mask[0];
|
|
|
|
// For LE, reset the stored peer channel mask
|
|
if (p_lcb->transport == BT_TRANSPORT_LE) {
|
|
p_lcb->peer_chnl_mask[0] = 0;
|
|
}
|
|
|
|
for (int xx = 0; xx < L2CAP_NUM_FIXED_CHNLS; xx++) {
|
|
if (p_lcb->p_fixed_ccbs[xx]) {
|
|
if (p_lcb->p_fixed_ccbs[xx] != p_lcb->p_pending_ccb) {
|
|
tL2C_CCB *p_l2c_chnl_ctrl_block;
|
|
p_l2c_chnl_ctrl_block = p_lcb->p_fixed_ccbs[xx];
|
|
p_lcb->p_fixed_ccbs[xx] = NULL;
|
|
l2cu_release_ccb(p_l2c_chnl_ctrl_block);
|
|
#if BLE_INCLUDED == TRUE
|
|
(*l2cb.fixed_reg[xx].pL2CA_FixedConn_Cb)(xx + L2CAP_FIRST_FIXED_CHNL,
|
|
p_lcb->remote_bd_addr, FALSE, p_lcb->disc_reason, p_lcb->transport);
|
|
#else
|
|
(*l2cb.fixed_reg[xx].pL2CA_FixedConn_Cb)(xx + L2CAP_FIRST_FIXED_CHNL,
|
|
p_lcb->remote_bd_addr, FALSE, p_lcb->disc_reason, BT_TRANSPORT_BR_EDR);
|
|
#endif
|
|
}
|
|
} else if ( (peer_channel_mask & (1 << (xx + L2CAP_FIRST_FIXED_CHNL)))
|
|
&& (l2cb.fixed_reg[xx].pL2CA_FixedConn_Cb != NULL) ) {
|
|
#if BLE_INCLUDED == TRUE
|
|
(*l2cb.fixed_reg[xx].pL2CA_FixedConn_Cb)(xx + L2CAP_FIRST_FIXED_CHNL,
|
|
p_lcb->remote_bd_addr, FALSE, p_lcb->disc_reason, p_lcb->transport);
|
|
#else
|
|
(*l2cb.fixed_reg[xx].pL2CA_FixedConn_Cb)(xx + L2CAP_FIRST_FIXED_CHNL,
|
|
p_lcb->remote_bd_addr, FALSE, p_lcb->disc_reason, BT_TRANSPORT_BR_EDR);
|
|
#endif
|
|
}
|
|
}
|
|
#endif
|
|
}
|
|
|
|
#if (BLE_INCLUDED == TRUE)
|
|
/*******************************************************************************
|
|
**
|
|
** Function l2cu_send_peer_ble_par_req
|
|
**
|
|
** Description Build and send a BLE parameter update request message
|
|
** to the peer.
|
|
**
|
|
** Returns void
|
|
**
|
|
*******************************************************************************/
|
|
void l2cu_send_peer_ble_par_req (tL2C_LCB *p_lcb, UINT16 min_int, UINT16 max_int,
|
|
UINT16 latency, UINT16 timeout)
|
|
{
|
|
BT_HDR *p_buf;
|
|
UINT8 *p;
|
|
|
|
/* Create an identifier for this packet */
|
|
p_lcb->id++;
|
|
l2cu_adj_id (p_lcb, L2CAP_ADJ_ID);
|
|
|
|
if ((p_buf = l2cu_build_header (p_lcb, L2CAP_CMD_BLE_UPD_REQ_LEN,
|
|
L2CAP_CMD_BLE_UPDATE_REQ, p_lcb->id)) == NULL ) {
|
|
L2CAP_TRACE_WARNING ("l2cu_send_peer_ble_par_req - no buffer");
|
|
return;
|
|
}
|
|
|
|
p = (UINT8 *)(p_buf + 1) + L2CAP_SEND_CMD_OFFSET + HCI_DATA_PREAMBLE_SIZE +
|
|
L2CAP_PKT_OVERHEAD + L2CAP_CMD_OVERHEAD;
|
|
|
|
UINT16_TO_STREAM (p, min_int);
|
|
UINT16_TO_STREAM (p, max_int);
|
|
UINT16_TO_STREAM (p, latency);
|
|
UINT16_TO_STREAM (p, timeout);
|
|
|
|
l2c_link_check_send_pkts (p_lcb, NULL, p_buf);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
**
|
|
** Function l2cu_send_peer_ble_par_rsp
|
|
**
|
|
** Description Build and send a BLE parameter update response message
|
|
** to the peer.
|
|
**
|
|
** Returns void
|
|
**
|
|
*******************************************************************************/
|
|
void l2cu_send_peer_ble_par_rsp (tL2C_LCB *p_lcb, UINT16 reason, UINT8 rem_id)
|
|
{
|
|
BT_HDR *p_buf;
|
|
UINT8 *p;
|
|
|
|
if ((p_buf = l2cu_build_header (p_lcb, L2CAP_CMD_BLE_UPD_RSP_LEN,
|
|
L2CAP_CMD_BLE_UPDATE_RSP, rem_id)) == NULL ) {
|
|
L2CAP_TRACE_WARNING ("l2cu_send_peer_ble_par_rsp - no buffer");
|
|
return;
|
|
}
|
|
|
|
p = (UINT8 *)(p_buf + 1) + L2CAP_SEND_CMD_OFFSET + HCI_DATA_PREAMBLE_SIZE +
|
|
L2CAP_PKT_OVERHEAD + L2CAP_CMD_OVERHEAD;
|
|
|
|
UINT16_TO_STREAM (p, reason);
|
|
|
|
l2c_link_check_send_pkts (p_lcb, NULL, p_buf);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
**
|
|
** Function l2cu_send_peer_ble_credit_based_conn_req
|
|
**
|
|
** Description Build and send a BLE packet to establish LE connection oriented
|
|
** L2CAP channel.
|
|
**
|
|
** Returns void
|
|
**
|
|
*******************************************************************************/
|
|
void l2cu_send_peer_ble_credit_based_conn_req (tL2C_CCB *p_ccb)
|
|
{
|
|
BT_HDR *p_buf;
|
|
UINT8 *p;
|
|
tL2C_LCB *p_lcb = NULL;
|
|
UINT16 mtu;
|
|
UINT16 mps;
|
|
UINT16 initial_credit;
|
|
|
|
if (!p_ccb) {
|
|
return;
|
|
}
|
|
p_lcb = p_ccb->p_lcb;
|
|
|
|
/* Create an identifier for this packet */
|
|
p_ccb->p_lcb->id++;
|
|
l2cu_adj_id(p_ccb->p_lcb, L2CAP_ADJ_ID);
|
|
|
|
p_ccb->local_id = p_ccb->p_lcb->id;
|
|
|
|
if ((p_buf = l2cu_build_header (p_lcb, L2CAP_CMD_BLE_CREDIT_BASED_CONN_REQ_LEN,
|
|
L2CAP_CMD_BLE_CREDIT_BASED_CONN_REQ, p_lcb->id)) == NULL )
|
|
{
|
|
L2CAP_TRACE_WARNING ("l2cu_send_peer_ble_credit_based_conn_req - no buffer");
|
|
return;
|
|
}
|
|
|
|
p = (UINT8 *)(p_buf + 1) + L2CAP_SEND_CMD_OFFSET + HCI_DATA_PREAMBLE_SIZE +
|
|
L2CAP_PKT_OVERHEAD + L2CAP_CMD_OVERHEAD;
|
|
|
|
mtu = p_ccb->local_conn_cfg.mtu;
|
|
mps = p_ccb->local_conn_cfg.mps;
|
|
initial_credit = p_ccb->local_conn_cfg.credits;
|
|
|
|
L2CAP_TRACE_DEBUG ("l2cu_send_peer_ble_credit_based_conn_req PSM:0x%04x local_cid:%d\
|
|
mtu:%d mps:%d initial_credit:%d", p_ccb->p_rcb->real_psm,\
|
|
p_ccb->local_cid, mtu, mps, initial_credit);
|
|
|
|
UINT16_TO_STREAM (p, p_ccb->p_rcb->real_psm);
|
|
UINT16_TO_STREAM (p, p_ccb->local_cid);
|
|
UINT16_TO_STREAM (p, mtu);
|
|
UINT16_TO_STREAM (p, mps);
|
|
UINT16_TO_STREAM (p, initial_credit);
|
|
|
|
l2c_link_check_send_pkts (p_lcb, NULL, p_buf);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
**
|
|
** Function l2cu_reject_ble_connection
|
|
**
|
|
** Description Build and send an L2CAP "Credit based connection res" message
|
|
** to the peer. This function is called for non-success cases.
|
|
**
|
|
** Returns void
|
|
**
|
|
*******************************************************************************/
|
|
void l2cu_reject_ble_connection (tL2C_LCB *p_lcb, UINT8 rem_id, UINT16 result)
|
|
{
|
|
BT_HDR *p_buf;
|
|
UINT8 *p;
|
|
|
|
if ((p_buf = l2cu_build_header(p_lcb, L2CAP_CMD_BLE_CREDIT_BASED_CONN_RES_LEN,
|
|
L2CAP_CMD_BLE_CREDIT_BASED_CONN_RES, rem_id)) == NULL )
|
|
{
|
|
L2CAP_TRACE_WARNING ("l2cu_reject_ble_connection - no buffer");
|
|
return;
|
|
}
|
|
|
|
p = (UINT8 *)(p_buf + 1) + L2CAP_SEND_CMD_OFFSET + HCI_DATA_PREAMBLE_SIZE +
|
|
L2CAP_PKT_OVERHEAD + L2CAP_CMD_OVERHEAD;
|
|
|
|
UINT16_TO_STREAM (p, 0); /* Local CID of 0 */
|
|
UINT16_TO_STREAM (p, 0); /* MTU */
|
|
UINT16_TO_STREAM (p, 0); /* MPS */
|
|
UINT16_TO_STREAM (p, 0); /* initial credit */
|
|
UINT16_TO_STREAM (p, result);
|
|
|
|
l2c_link_check_send_pkts (p_lcb, NULL, p_buf);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
**
|
|
** Function l2cu_send_peer_ble_credit_based_conn_res
|
|
**
|
|
** Description Build and send an L2CAP "Credit based connection res" message
|
|
** to the peer. This function is called in case of success.
|
|
**
|
|
** Returns void
|
|
**
|
|
*******************************************************************************/
|
|
void l2cu_send_peer_ble_credit_based_conn_res (tL2C_CCB *p_ccb, UINT16 result)
|
|
{
|
|
BT_HDR *p_buf;
|
|
UINT8 *p;
|
|
|
|
L2CAP_TRACE_DEBUG ("l2cu_send_peer_ble_credit_based_conn_res");
|
|
if ((p_buf = l2cu_build_header(p_ccb->p_lcb, L2CAP_CMD_BLE_CREDIT_BASED_CONN_RES_LEN,
|
|
L2CAP_CMD_BLE_CREDIT_BASED_CONN_RES, p_ccb->remote_id)) == NULL )
|
|
{
|
|
L2CAP_TRACE_WARNING ("l2cu_send_peer_ble_credit_based_conn_res - no buffer");
|
|
return;
|
|
}
|
|
|
|
p = (UINT8 *)(p_buf + 1) + L2CAP_SEND_CMD_OFFSET + HCI_DATA_PREAMBLE_SIZE +
|
|
L2CAP_PKT_OVERHEAD + L2CAP_CMD_OVERHEAD;
|
|
|
|
UINT16_TO_STREAM (p, p_ccb->local_cid); /* Local CID */
|
|
UINT16_TO_STREAM (p, p_ccb->local_conn_cfg.mtu); /* MTU */
|
|
UINT16_TO_STREAM (p, p_ccb->local_conn_cfg.mps); /* MPS */
|
|
UINT16_TO_STREAM (p, p_ccb->local_conn_cfg.credits); /* initial credit */
|
|
UINT16_TO_STREAM (p, result);
|
|
|
|
l2c_link_check_send_pkts (p_ccb->p_lcb, NULL, p_buf);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
**
|
|
** Function l2cu_send_peer_ble_flow_control_credit
|
|
**
|
|
** Description Build and send a BLE packet to give credits to peer device
|
|
** for LE connection oriented L2CAP channel.
|
|
**
|
|
** Returns void
|
|
**
|
|
*******************************************************************************/
|
|
void l2cu_send_peer_ble_flow_control_credit(tL2C_CCB *p_ccb, UINT16 credit_value)
|
|
{
|
|
BT_HDR *p_buf;
|
|
UINT8 *p;
|
|
tL2C_LCB *p_lcb = NULL;
|
|
|
|
if (!p_ccb) {
|
|
return;
|
|
}
|
|
p_lcb = p_ccb->p_lcb;
|
|
|
|
/* Create an identifier for this packet */
|
|
p_ccb->p_lcb->id++;
|
|
l2cu_adj_id(p_ccb->p_lcb, L2CAP_ADJ_ID);
|
|
|
|
p_ccb->local_id = p_ccb->p_lcb->id;
|
|
|
|
if ((p_buf = l2cu_build_header (p_lcb, L2CAP_CMD_BLE_FLOW_CTRL_CREDIT_LEN,
|
|
L2CAP_CMD_BLE_FLOW_CTRL_CREDIT, p_lcb->id)) == NULL )
|
|
{
|
|
L2CAP_TRACE_WARNING ("l2cu_send_peer_ble_credit_based_conn_req - no buffer");
|
|
return;
|
|
}
|
|
|
|
p = (UINT8 *)(p_buf + 1) + L2CAP_SEND_CMD_OFFSET + HCI_DATA_PREAMBLE_SIZE +
|
|
L2CAP_PKT_OVERHEAD + L2CAP_CMD_OVERHEAD;
|
|
|
|
UINT16_TO_STREAM (p, p_ccb->local_cid);
|
|
UINT16_TO_STREAM (p, credit_value);
|
|
|
|
l2c_link_check_send_pkts (p_lcb, NULL, p_buf);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
**
|
|
** Function l2cu_send_peer_ble_credit_based_conn_req
|
|
**
|
|
** Description Build and send a BLE packet to disconnect LE connection oriented
|
|
** L2CAP channel.
|
|
**
|
|
** Returns void
|
|
**
|
|
*******************************************************************************/
|
|
void l2cu_send_peer_ble_credit_based_disconn_req(tL2C_CCB *p_ccb)
|
|
{
|
|
BT_HDR *p_buf;
|
|
UINT8 *p;
|
|
tL2C_LCB *p_lcb = NULL;
|
|
L2CAP_TRACE_DEBUG ("%s",__func__);
|
|
|
|
if (!p_ccb) {
|
|
return;
|
|
}
|
|
p_lcb = p_ccb->p_lcb;
|
|
|
|
/* Create an identifier for this packet */
|
|
p_ccb->p_lcb->id++;
|
|
l2cu_adj_id(p_ccb->p_lcb, L2CAP_ADJ_ID);
|
|
|
|
p_ccb->local_id = p_ccb->p_lcb->id;
|
|
if ((p_buf = l2cu_build_header (p_lcb, L2CAP_DISC_REQ_LEN,
|
|
L2CAP_CMD_DISC_REQ, p_lcb->id)) == NULL )
|
|
{
|
|
L2CAP_TRACE_WARNING ("l2cu_send_peer_ble_credit_based_disconn_req - no buffer");
|
|
return;
|
|
}
|
|
|
|
p = (UINT8 *)(p_buf + 1) + L2CAP_SEND_CMD_OFFSET + HCI_DATA_PREAMBLE_SIZE +
|
|
L2CAP_PKT_OVERHEAD + L2CAP_CMD_OVERHEAD;
|
|
|
|
UINT16_TO_STREAM (p, p_ccb->remote_cid);
|
|
UINT16_TO_STREAM (p,p_ccb->local_cid);
|
|
|
|
l2c_link_check_send_pkts (p_lcb, NULL, p_buf);
|
|
}
|
|
|
|
#endif /* BLE_INCLUDED == TRUE */
|
|
|
|
#if (C2H_FLOW_CONTROL_INCLUDED == TRUE)
|
|
/*******************************************************************************
|
|
**
|
|
** Function l2cu_find_completed_packets
|
|
**
|
|
** Description Find the completed packets,
|
|
** Then set it to zero
|
|
**
|
|
** Returns The num of handles
|
|
**
|
|
*******************************************************************************/
|
|
UINT8 l2cu_find_completed_packets(UINT16 *handles, UINT16 *num_packets)
|
|
{
|
|
int xx;
|
|
UINT8 num = 0;
|
|
tL2C_LCB *p_lcb = &l2cb.lcb_pool[0];
|
|
|
|
for (xx = 0; xx < MAX_L2CAP_LINKS; xx++, p_lcb++) {
|
|
if ((p_lcb->in_use) && (p_lcb->completed_packets > 0)) {
|
|
*(handles++) = p_lcb->handle;
|
|
*(num_packets++) = p_lcb->completed_packets;
|
|
num++;
|
|
p_lcb->completed_packets = 0;
|
|
}
|
|
}
|
|
|
|
return num;
|
|
}
|
|
#endif ///C2H_FLOW_CONTROL_INCLUDED == TRUE
|
|
|
|
/*******************************************************************************
|
|
** Functions used by both Full and Light Stack
|
|
********************************************************************************/
|
|
|
|
/*******************************************************************************
|
|
**
|
|
** Function l2cu_find_lcb_by_handle
|
|
**
|
|
** Description Look through all active LCBs for a match based on the
|
|
** HCI handle.
|
|
**
|
|
** Returns pointer to matched LCB, or NULL if no match
|
|
**
|
|
*******************************************************************************/
|
|
tL2C_LCB *l2cu_find_lcb_by_handle (UINT16 handle)
|
|
{
|
|
int xx;
|
|
tL2C_LCB *p_lcb = &l2cb.lcb_pool[0];
|
|
|
|
for (xx = 0; xx < MAX_L2CAP_LINKS; xx++, p_lcb++) {
|
|
if ((p_lcb->in_use) && (p_lcb->handle == handle)) {
|
|
return (p_lcb);
|
|
}
|
|
}
|
|
|
|
/* If here, no match found */
|
|
return (NULL);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
**
|
|
** Function l2cu_find_ccb_by_cid
|
|
**
|
|
** Description Look through all active CCBs on a link for a match based
|
|
** on the local CID. If passed the link pointer is NULL, all
|
|
** active links are searched.
|
|
**
|
|
** Returns pointer to matched CCB, or NULL if no match
|
|
**
|
|
*******************************************************************************/
|
|
tL2C_CCB *l2cu_find_ccb_by_cid (tL2C_LCB *p_lcb, UINT16 local_cid)
|
|
{
|
|
tL2C_CCB *p_ccb = NULL;
|
|
#if (L2CAP_UCD_INCLUDED == TRUE)
|
|
UINT8 xx;
|
|
#endif
|
|
|
|
if (local_cid >= L2CAP_BASE_APPL_CID) {
|
|
/* find the associated CCB by "index" */
|
|
local_cid -= L2CAP_BASE_APPL_CID;
|
|
|
|
if (local_cid >= MAX_L2CAP_CHANNELS) {
|
|
return NULL;
|
|
}
|
|
|
|
p_ccb = l2cb.ccb_pool + local_cid;
|
|
|
|
/* make sure the CCB is in use */
|
|
if (!p_ccb->in_use) {
|
|
p_ccb = NULL;
|
|
}
|
|
/* make sure it's for the same LCB */
|
|
else if (p_lcb && p_lcb != p_ccb->p_lcb) {
|
|
p_ccb = NULL;
|
|
}
|
|
}
|
|
#if (L2CAP_UCD_INCLUDED == TRUE)
|
|
else {
|
|
/* searching fixed channel */
|
|
p_ccb = l2cb.ccb_pool;
|
|
for ( xx = 0; xx < MAX_L2CAP_CHANNELS; xx++ ) {
|
|
if ((p_ccb->local_cid == local_cid)
|
|
&& (p_ccb->in_use)
|
|
&& (p_lcb == p_ccb->p_lcb)) {
|
|
break;
|
|
} else {
|
|
p_ccb++;
|
|
}
|
|
}
|
|
if ( xx >= MAX_L2CAP_CHANNELS ) {
|
|
return NULL;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
return (p_ccb);
|
|
}
|
|
|
|
#if (L2CAP_ROUND_ROBIN_CHANNEL_SERVICE == TRUE && CLASSIC_BT_INCLUDED == TRUE)
|
|
|
|
/******************************************************************************
|
|
**
|
|
** Function l2cu_get_next_channel_in_rr
|
|
**
|
|
** Description get the next channel to send on a link. It also adjusts the
|
|
** CCB queue to do a basic priority and round-robin scheduling.
|
|
**
|
|
** Returns pointer to CCB or NULL
|
|
**
|
|
*******************************************************************************/
|
|
static tL2C_CCB *l2cu_get_next_channel_in_rr(tL2C_LCB *p_lcb)
|
|
{
|
|
tL2C_CCB *p_serve_ccb = NULL;
|
|
tL2C_CCB *p_ccb;
|
|
|
|
int i, j;
|
|
|
|
/* scan all of priority until finding a channel to serve */
|
|
for ( i = 0; (i < L2CAP_NUM_CHNL_PRIORITY) && (!p_serve_ccb); i++ ) {
|
|
/* scan all channel within serving priority group until finding a channel to serve */
|
|
for ( j = 0; (j < p_lcb->rr_serv[p_lcb->rr_pri].num_ccb) && (!p_serve_ccb); j++) {
|
|
/* scaning from next serving channel */
|
|
p_ccb = p_lcb->rr_serv[p_lcb->rr_pri].p_serve_ccb;
|
|
|
|
if (!p_ccb) {
|
|
L2CAP_TRACE_ERROR("p_serve_ccb is NULL, rr_pri=%d", p_lcb->rr_pri);
|
|
return NULL;
|
|
}
|
|
|
|
L2CAP_TRACE_DEBUG("RR scan pri=%d, lcid=0x%04x, q_cout=%d",
|
|
p_ccb->ccb_priority, p_ccb->local_cid,
|
|
fixed_queue_length(p_ccb->xmit_hold_q));
|
|
|
|
/* store the next serving channel */
|
|
/* this channel is the last channel of its priority group */
|
|
if (( p_ccb->p_next_ccb == NULL )
|
|
|| ( p_ccb->p_next_ccb->ccb_priority != p_ccb->ccb_priority )) {
|
|
/* next serving channel is set to the first channel in the group */
|
|
p_lcb->rr_serv[p_lcb->rr_pri].p_serve_ccb = p_lcb->rr_serv[p_lcb->rr_pri].p_first_ccb;
|
|
} else {
|
|
/* next serving channel is set to the next channel in the group */
|
|
p_lcb->rr_serv[p_lcb->rr_pri].p_serve_ccb = p_ccb->p_next_ccb;
|
|
}
|
|
|
|
if (p_ccb->chnl_state != CST_OPEN) {
|
|
continue;
|
|
}
|
|
|
|
/* eL2CAP option in use */
|
|
if (p_ccb->peer_cfg.fcr.mode != L2CAP_FCR_BASIC_MODE) {
|
|
if (p_ccb->fcrb.wait_ack || p_ccb->fcrb.remote_busy) {
|
|
continue;
|
|
}
|
|
|
|
if (fixed_queue_is_empty(p_ccb->fcrb.retrans_q)) {
|
|
if (fixed_queue_is_empty(p_ccb->xmit_hold_q)) {
|
|
continue;
|
|
}
|
|
|
|
|
|
#if (CLASSIC_BT_INCLUDED == TRUE)
|
|
/* If in eRTM mode, check for window closure */
|
|
if ( (p_ccb->peer_cfg.fcr.mode == L2CAP_FCR_ERTM_MODE) && (l2c_fcr_is_flow_controlled (p_ccb)) ) {
|
|
continue;
|
|
}
|
|
#endif ///CLASSIC_BT_INCLUDED == TRUE
|
|
}
|
|
} else {
|
|
if (fixed_queue_is_empty(p_ccb->xmit_hold_q)) {
|
|
continue;
|
|
}
|
|
}
|
|
|
|
/* found a channel to serve */
|
|
p_serve_ccb = p_ccb;
|
|
/* decrease quota of its priority group */
|
|
p_lcb->rr_serv[p_lcb->rr_pri].quota--;
|
|
}
|
|
|
|
/* if there is no more quota of the priority group or no channel to have data to send */
|
|
if ((p_lcb->rr_serv[p_lcb->rr_pri].quota == 0) || (!p_serve_ccb)) {
|
|
/* serve next priority group */
|
|
p_lcb->rr_pri = (p_lcb->rr_pri + 1) % L2CAP_NUM_CHNL_PRIORITY;
|
|
/* initialize its quota */
|
|
p_lcb->rr_serv[p_lcb->rr_pri].quota = L2CAP_GET_PRIORITY_QUOTA(p_lcb->rr_pri);
|
|
}
|
|
}
|
|
|
|
if (p_serve_ccb) {
|
|
L2CAP_TRACE_DEBUG("RR service pri=%d, quota=%d, lcid=0x%04x",
|
|
p_serve_ccb->ccb_priority,
|
|
p_lcb->rr_serv[p_serve_ccb->ccb_priority].quota,
|
|
p_serve_ccb->local_cid );
|
|
}
|
|
|
|
return p_serve_ccb;
|
|
}
|
|
|
|
#else /* (L2CAP_ROUND_ROBIN_CHANNEL_SERVICE == TRUE) */
|
|
|
|
/******************************************************************************
|
|
**
|
|
** Function l2cu_get_next_channel
|
|
**
|
|
** Description get the next channel to send on a link bassed on priority
|
|
** scheduling.
|
|
**
|
|
** Returns pointer to CCB or NULL
|
|
**
|
|
*******************************************************************************/
|
|
#if (CLASSIC_BT_INCLUDED == TRUE)
|
|
static tL2C_CCB *l2cu_get_next_channel(tL2C_LCB *p_lcb)
|
|
{
|
|
tL2C_CCB *p_ccb;
|
|
|
|
/* Get the first CCB with data to send.
|
|
*/
|
|
for (p_ccb = p_lcb->ccb_queue.p_first_ccb; p_ccb; p_ccb = p_ccb->p_next_ccb) {
|
|
if (p_ccb->chnl_state != CST_OPEN) {
|
|
continue;
|
|
}
|
|
|
|
if (p_ccb->fcrb.wait_ack || p_ccb->fcrb.remote_busy) {
|
|
continue;
|
|
}
|
|
|
|
if (!fixed_queue_is_empty(p_ccb->fcrb.retrans_q))
|
|
return p_ccb;
|
|
}
|
|
|
|
if (fixed_queue_is_empty(p_ccb->xmit_hold_q))
|
|
continue;
|
|
}
|
|
|
|
/* If in eRTM mode, check for window closure */
|
|
if ( (p_ccb->peer_cfg.fcr.mode == L2CAP_FCR_ERTM_MODE) && (l2c_fcr_is_flow_controlled (p_ccb)) ) {
|
|
continue;
|
|
}
|
|
|
|
/* If here, we found someone */
|
|
return p_ccb;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
#endif ///CLASSIC_BT_INCLUDED == TRUE
|
|
|
|
#endif /* (L2CAP_ROUND_ROBIN_CHANNEL_SERVICE == TRUE) */
|
|
|
|
/******************************************************************************
|
|
**
|
|
** Function l2cu_get_next_buffer_to_send
|
|
**
|
|
** Description get the next buffer to send on a link. It also adjusts the
|
|
** CCB queue to do a basic priority and round-robin scheduling.
|
|
**
|
|
** Returns pointer to buffer or NULL
|
|
**
|
|
*******************************************************************************/
|
|
BT_HDR *l2cu_get_next_buffer_to_send (tL2C_LCB *p_lcb)
|
|
{
|
|
tL2C_CCB *p_ccb;
|
|
BT_HDR *p_buf = NULL;
|
|
|
|
/* Highest priority are fixed channels */
|
|
#if (L2CAP_NUM_FIXED_CHNLS > 0)
|
|
int xx;
|
|
|
|
for (xx = 0; xx < L2CAP_NUM_FIXED_CHNLS; xx++) {
|
|
if ((p_ccb = p_lcb->p_fixed_ccbs[xx]) == NULL) {
|
|
continue;
|
|
}
|
|
|
|
/* eL2CAP option in use */
|
|
if (p_ccb->peer_cfg.fcr.mode != L2CAP_FCR_BASIC_MODE) {
|
|
#if (CLASSIC_BT_INCLUDED == TRUE)
|
|
if (p_ccb->fcrb.wait_ack || p_ccb->fcrb.remote_busy) {
|
|
continue;
|
|
}
|
|
|
|
/* No more checks needed if sending from the reatransmit queue */
|
|
if (fixed_queue_is_empty(p_ccb->fcrb.retrans_q))
|
|
{
|
|
if (fixed_queue_is_empty(p_ccb->xmit_hold_q)) {
|
|
continue;
|
|
}
|
|
/* If in eRTM mode, check for window closure */
|
|
if ( (p_ccb->peer_cfg.fcr.mode == L2CAP_FCR_ERTM_MODE) && (l2c_fcr_is_flow_controlled (p_ccb)) ) {
|
|
continue;
|
|
}
|
|
}
|
|
if ((p_buf = l2c_fcr_get_next_xmit_sdu_seg(p_ccb, 0)) != NULL) {
|
|
l2cu_check_channel_congestion (p_ccb);
|
|
l2cu_set_acl_hci_header (p_buf, p_ccb);
|
|
return (p_buf);
|
|
}
|
|
#else
|
|
continue;
|
|
#endif ///CLASSIC_BT_INCLUDED == TRUE
|
|
|
|
} else {
|
|
if (!fixed_queue_is_empty(p_ccb->xmit_hold_q)) {
|
|
p_buf = (BT_HDR *)fixed_queue_dequeue(p_ccb->xmit_hold_q, 0);
|
|
if (NULL == p_buf) {
|
|
L2CAP_TRACE_ERROR("l2cu_get_buffer_to_send: No data to be sent");
|
|
return (NULL);
|
|
}
|
|
/* send tx complete */
|
|
if (l2cb.fixed_reg[xx].pL2CA_FixedTxComplete_Cb) {
|
|
(*l2cb.fixed_reg[xx].pL2CA_FixedTxComplete_Cb)(p_ccb->local_cid, 1);
|
|
}
|
|
|
|
l2cu_check_channel_congestion (p_ccb);
|
|
l2cu_set_acl_hci_header (p_buf, p_ccb);
|
|
return (p_buf);
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
#if (CLASSIC_BT_INCLUDED == TRUE)
|
|
#if (L2CAP_ROUND_ROBIN_CHANNEL_SERVICE == TRUE)
|
|
/* get next serving channel in round-robin */
|
|
p_ccb = l2cu_get_next_channel_in_rr( p_lcb );
|
|
#else
|
|
p_ccb = l2cu_get_next_channel( p_lcb );
|
|
#endif
|
|
|
|
/* Return if no buffer */
|
|
if (p_ccb == NULL) {
|
|
return (NULL);
|
|
}
|
|
|
|
if (p_ccb->peer_cfg.fcr.mode != L2CAP_FCR_BASIC_MODE) {
|
|
|
|
if ((p_buf = l2c_fcr_get_next_xmit_sdu_seg(p_ccb, 0)) == NULL) {
|
|
return (NULL);
|
|
}
|
|
|
|
} else {
|
|
p_buf = (BT_HDR *)fixed_queue_dequeue(p_ccb->xmit_hold_q, 0);
|
|
if (NULL == p_buf) {
|
|
L2CAP_TRACE_ERROR("l2cu_get_buffer_to_send() #2: No data to be sent");
|
|
return (NULL);
|
|
}
|
|
}
|
|
|
|
if ( p_ccb->p_rcb && p_ccb->p_rcb->api.pL2CA_TxComplete_Cb && (p_ccb->peer_cfg.fcr.mode != L2CAP_FCR_ERTM_MODE) ) {
|
|
(*p_ccb->p_rcb->api.pL2CA_TxComplete_Cb)(p_ccb->local_cid, 1);
|
|
}
|
|
|
|
|
|
l2cu_check_channel_congestion (p_ccb);
|
|
|
|
l2cu_set_acl_hci_header (p_buf, p_ccb);
|
|
#endif ///CLASSIC_BT_INCLUDED == TRUE
|
|
|
|
return (p_buf);
|
|
}
|
|
|
|
/******************************************************************************
|
|
**
|
|
** Function l2cu_set_acl_hci_header
|
|
**
|
|
** Description Set HCI handle for ACL packet
|
|
**
|
|
** Returns None
|
|
**
|
|
*******************************************************************************/
|
|
void l2cu_set_acl_hci_header (BT_HDR *p_buf, tL2C_CCB *p_ccb)
|
|
{
|
|
UINT8 *p;
|
|
|
|
/* Set the pointer to the beginning of the data minus 4 bytes for the packet header */
|
|
p = (UINT8 *)(p_buf + 1) + p_buf->offset - HCI_DATA_PREAMBLE_SIZE;
|
|
|
|
#if (BLE_INCLUDED == TRUE)
|
|
if (p_ccb->p_lcb->transport == BT_TRANSPORT_LE) {
|
|
UINT16_TO_STREAM (p, p_ccb->p_lcb->handle | (L2CAP_PKT_START_NON_FLUSHABLE << L2CAP_PKT_TYPE_SHIFT));
|
|
|
|
uint16_t acl_data_size = controller_get_interface()->get_acl_data_size_ble();
|
|
/* The HCI transport will segment the buffers. */
|
|
if (p_buf->len > acl_data_size) {
|
|
UINT16_TO_STREAM (p, acl_data_size);
|
|
} else {
|
|
UINT16_TO_STREAM (p, p_buf->len);
|
|
}
|
|
} /* (BLE_INCLUDED == TRUE) */
|
|
else
|
|
#endif
|
|
{
|
|
#if (L2CAP_NON_FLUSHABLE_PB_INCLUDED == TRUE)
|
|
if ( (((p_buf->layer_specific & L2CAP_FLUSHABLE_MASK) == L2CAP_FLUSHABLE_CH_BASED) && (p_ccb->is_flushable))
|
|
|| ((p_buf->layer_specific & L2CAP_FLUSHABLE_MASK) == L2CAP_FLUSHABLE_PKT) ) {
|
|
UINT16_TO_STREAM (p, p_ccb->p_lcb->handle | (L2CAP_PKT_START << L2CAP_PKT_TYPE_SHIFT));
|
|
} else {
|
|
UINT16_TO_STREAM (p, p_ccb->p_lcb->handle | l2cb.non_flushable_pbf);
|
|
}
|
|
#else
|
|
UINT16_TO_STREAM (p, p_ccb->p_lcb->handle | (L2CAP_PKT_START << L2CAP_PKT_TYPE_SHIFT));
|
|
#endif
|
|
|
|
uint16_t acl_data_size = controller_get_interface()->get_acl_data_size_classic();
|
|
/* The HCI transport will segment the buffers. */
|
|
if (p_buf->len > acl_data_size) {
|
|
UINT16_TO_STREAM (p, acl_data_size);
|
|
} else {
|
|
UINT16_TO_STREAM (p, p_buf->len);
|
|
}
|
|
}
|
|
p_buf->offset -= HCI_DATA_PREAMBLE_SIZE;
|
|
p_buf->len += HCI_DATA_PREAMBLE_SIZE;
|
|
}
|
|
|
|
/******************************************************************************
|
|
**
|
|
** Function l2cu_check_channel_congestion
|
|
**
|
|
** Description check if any change in congestion status
|
|
**
|
|
** Returns None
|
|
**
|
|
*******************************************************************************/
|
|
void l2cu_check_channel_congestion (tL2C_CCB *p_ccb)
|
|
{
|
|
size_t q_count = fixed_queue_length(p_ccb->xmit_hold_q);
|
|
|
|
#if (L2CAP_UCD_INCLUDED == TRUE)
|
|
if ( p_ccb->local_cid == L2CAP_CONNECTIONLESS_CID ) {
|
|
q_count += fixed_queue_length(p_ccb->p_lcb->ucd_out_sec_pending_q);
|
|
}
|
|
#endif
|
|
/* If the CCB queue limit is subject to a quota, check for congestion */
|
|
/* if this channel has outgoing traffic */
|
|
if (p_ccb->buff_quota != 0) {
|
|
/* If this channel was congested */
|
|
if ( p_ccb->cong_sent ) {
|
|
/* If the channel is not congested now, tell the app */
|
|
if (q_count <= (p_ccb->buff_quota / 2)) {
|
|
p_ccb->cong_sent = FALSE;
|
|
if (p_ccb->p_rcb && p_ccb->p_rcb->api.pL2CA_CongestionStatus_Cb) {
|
|
L2CAP_TRACE_DEBUG ("L2CAP - Calling CongestionStatus_Cb (FALSE), CID: 0x%04x xmit_hold_q.count: %u buff_quota: %u",
|
|
p_ccb->local_cid, q_count, p_ccb->buff_quota);
|
|
|
|
/* Prevent recursive calling */
|
|
l2cb.is_cong_cback_context = TRUE;
|
|
(*p_ccb->p_rcb->api.pL2CA_CongestionStatus_Cb)(p_ccb->local_cid, FALSE);
|
|
l2cb.is_cong_cback_context = FALSE;
|
|
}
|
|
#if (L2CAP_UCD_INCLUDED == TRUE)
|
|
else if ( p_ccb->p_rcb && p_ccb->local_cid == L2CAP_CONNECTIONLESS_CID ) {
|
|
if ( p_ccb->p_rcb->ucd.cb_info.pL2CA_UCD_Congestion_Status_Cb ) {
|
|
L2CAP_TRACE_DEBUG ("L2CAP - Calling UCD CongestionStatus_Cb (FALSE), SecPendingQ:%u,XmitQ:%u,Quota:%u",
|
|
fixed_queue_length(p_ccb->p_lcb->ucd_out_sec_pending_q),
|
|
fixed_queue_length(p_ccb->xmit_hold_q),
|
|
p_ccb->buff_quota);
|
|
p_ccb->p_rcb->ucd.cb_info.pL2CA_UCD_Congestion_Status_Cb( p_ccb->p_lcb->remote_bd_addr, FALSE );
|
|
}
|
|
}
|
|
#endif
|
|
#if (L2CAP_NUM_FIXED_CHNLS > 0)
|
|
else {
|
|
UINT8 xx;
|
|
for (xx = 0; xx < L2CAP_NUM_FIXED_CHNLS; xx ++) {
|
|
if (p_ccb->p_lcb->p_fixed_ccbs[xx] == p_ccb) {
|
|
if (l2cb.fixed_reg[xx].pL2CA_FixedCong_Cb != NULL) {
|
|
(* l2cb.fixed_reg[xx].pL2CA_FixedCong_Cb)(p_ccb->p_lcb->remote_bd_addr, FALSE);
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
}
|
|
} else {
|
|
/* If this channel was not congested but it is congested now, tell the app */
|
|
if (q_count > p_ccb->buff_quota) {
|
|
p_ccb->cong_sent = TRUE;
|
|
if (p_ccb->p_rcb && p_ccb->p_rcb->api.pL2CA_CongestionStatus_Cb) {
|
|
L2CAP_TRACE_DEBUG ("L2CAP - Calling CongestionStatus_Cb (TRUE),CID:0x%04x,XmitQ:%u,Quota:%u",
|
|
p_ccb->local_cid, q_count, p_ccb->buff_quota);
|
|
|
|
(*p_ccb->p_rcb->api.pL2CA_CongestionStatus_Cb)(p_ccb->local_cid, TRUE);
|
|
}
|
|
#if (L2CAP_UCD_INCLUDED == TRUE)
|
|
else if ( p_ccb->p_rcb && p_ccb->local_cid == L2CAP_CONNECTIONLESS_CID ) {
|
|
if ( p_ccb->p_rcb->ucd.cb_info.pL2CA_UCD_Congestion_Status_Cb ) {
|
|
L2CAP_TRACE_DEBUG ("L2CAP - Calling UCD CongestionStatus_Cb (TRUE), SecPendingQ:%u,XmitQ:%u,Quota:%u",
|
|
fixed_queue_length(p_ccb->p_lcb->ucd_out_sec_pending_q),
|
|
fixed_queue_length(p_ccb->xmit_hold_q),
|
|
p_ccb->buff_quota);
|
|
p_ccb->p_rcb->ucd.cb_info.pL2CA_UCD_Congestion_Status_Cb( p_ccb->p_lcb->remote_bd_addr, TRUE );
|
|
}
|
|
}
|
|
#endif
|
|
#if (L2CAP_NUM_FIXED_CHNLS > 0)
|
|
else {
|
|
UINT8 xx;
|
|
for (xx = 0; xx < L2CAP_NUM_FIXED_CHNLS; xx ++) {
|
|
if (p_ccb->p_lcb->p_fixed_ccbs[xx] == p_ccb) {
|
|
if (l2cb.fixed_reg[xx].pL2CA_FixedCong_Cb != NULL) {
|
|
(* l2cb.fixed_reg[xx].pL2CA_FixedCong_Cb)(p_ccb->p_lcb->remote_bd_addr, TRUE);
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|