| /****************************************************************************** |
| * |
| * Copyright (C) 1999-2012 Broadcom Corporation |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at: |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| * |
| ******************************************************************************/ |
| |
| /****************************************************************************** |
| * |
| * This file contains the L2CAP API code |
| * |
| ******************************************************************************/ |
| |
| #include <stdlib.h> |
| #include <string.h> |
| #include <stdio.h> |
| |
| #include "gki.h" |
| #include "bt_types.h" |
| #include "hcidefs.h" |
| #include "hcimsgs.h" |
| #include "l2cdefs.h" |
| #include "l2c_int.h" |
| #include "btu.h" |
| #include "btm_api.h" |
| |
| /******************************************************************************* |
| ** |
| ** Function L2CA_Register |
| ** |
| ** Description Other layers call this function to register for L2CAP |
| ** services. |
| ** |
| ** Returns PSM to use or zero if error. Typically, the PSM returned |
| ** is the same as was passed in, but for an outgoing-only |
| ** connection to a dynamic PSM, a "virtual" PSM is returned |
| ** and should be used in the calls to L2CA_ConnectReq(), |
| ** L2CA_ErtmConnectReq() and L2CA_Deregister() |
| ** |
| *******************************************************************************/ |
| UINT16 L2CA_Register (UINT16 psm, tL2CAP_APPL_INFO *p_cb_info) |
| { |
| tL2C_RCB *p_rcb; |
| UINT16 vpsm = psm; |
| |
| L2CAP_TRACE_API1 ("L2CAP - L2CA_Register() called for PSM: 0x%04x", psm); |
| |
| /* Verify that the required callback info has been filled in |
| ** Note: Connection callbacks are required but not checked |
| ** for here because it is possible to be only a client |
| ** or only a server. |
| */ |
| if ((!p_cb_info->pL2CA_ConfigCfm_Cb) |
| || (!p_cb_info->pL2CA_ConfigInd_Cb) |
| || (!p_cb_info->pL2CA_DataInd_Cb) |
| || (!p_cb_info->pL2CA_DisconnectInd_Cb)) |
| { |
| L2CAP_TRACE_ERROR1 ("L2CAP - no cb registering PSM: 0x%04x", psm); |
| return (0); |
| } |
| |
| /* Verify PSM is valid */ |
| if (L2C_INVALID_PSM(psm)) |
| { |
| L2CAP_TRACE_ERROR1 ("L2CAP - invalid PSM value, PSM: 0x%04x", psm); |
| return (0); |
| } |
| |
| /* Check if this is a registration for an outgoing-only connection to */ |
| /* a dynamic PSM. If so, allocate a "virtual" PSM for the app to use. */ |
| if ( (psm >= 0x1001) && (p_cb_info->pL2CA_ConnectInd_Cb == NULL) ) |
| { |
| for (vpsm = 0x1002; vpsm < 0x8000; vpsm += 2) |
| { |
| if ((p_rcb = l2cu_find_rcb_by_psm (vpsm)) == NULL) |
| break; |
| } |
| |
| L2CAP_TRACE_API2 ("L2CA_Register - Real PSM: 0x%04x Virtual PSM: 0x%04x", psm, vpsm); |
| } |
| |
| /* If registration block already there, just overwrite it */ |
| if ((p_rcb = l2cu_find_rcb_by_psm (vpsm)) == NULL) |
| { |
| if ((p_rcb = l2cu_allocate_rcb (vpsm)) == NULL) |
| { |
| L2CAP_TRACE_WARNING2 ("L2CAP - no RCB available, PSM: 0x%04x vPSM: 0x%04x", psm, vpsm); |
| return (0); |
| } |
| } |
| |
| p_rcb->api = *p_cb_info; |
| p_rcb->real_psm = psm; |
| |
| return (vpsm); |
| } |
| |
| |
| |
| /******************************************************************************* |
| ** |
| ** Function L2CA_Deregister |
| ** |
| ** Description Other layers call this function to de-register for L2CAP |
| ** services. |
| ** |
| ** Returns void |
| ** |
| *******************************************************************************/ |
| void L2CA_Deregister (UINT16 psm) |
| { |
| tL2C_RCB *p_rcb; |
| tL2C_CCB *p_ccb; |
| tL2C_LCB *p_lcb; |
| int ii; |
| |
| L2CAP_TRACE_API1 ("L2CAP - L2CA_Deregister() called for PSM: 0x%04x", psm); |
| |
| if ((p_rcb = l2cu_find_rcb_by_psm (psm)) != NULL) |
| { |
| p_lcb = &l2cb.lcb_pool[0]; |
| for (ii = 0; ii < MAX_L2CAP_LINKS; ii++, p_lcb++) |
| { |
| if (p_lcb->in_use) |
| { |
| if (((p_ccb = p_lcb->ccb_queue.p_first_ccb) == NULL) |
| || (p_lcb->link_state == LST_DISCONNECTING)) |
| continue; |
| |
| if ((p_ccb->in_use) && |
| ((p_ccb->chnl_state == CST_W4_L2CAP_DISCONNECT_RSP) || |
| (p_ccb->chnl_state == CST_W4_L2CA_DISCONNECT_RSP))) |
| continue; |
| |
| if (p_ccb->p_rcb == p_rcb) |
| l2c_csm_execute (p_ccb, L2CEVT_L2CA_DISCONNECT_REQ, NULL); |
| } |
| } |
| l2cu_release_rcb (p_rcb); |
| } |
| else |
| { |
| L2CAP_TRACE_WARNING1 ("L2CAP - PSM: 0x%04x not found for deregistration", psm); |
| } |
| } |
| |
| /******************************************************************************* |
| ** |
| ** Function L2CA_AllocatePSM |
| ** |
| ** Description Other layers call this function to find an unused PSM for L2CAP |
| ** services. |
| ** |
| ** Returns PSM to use. |
| ** |
| *******************************************************************************/ |
| UINT16 L2CA_AllocatePSM(void) |
| { |
| BOOLEAN done = FALSE; |
| UINT16 psm = l2cb.dyn_psm; |
| |
| L2CAP_TRACE_API0( "L2CA_AllocatePSM"); |
| while (!done) |
| { |
| psm += 2; |
| if (psm > 0xfeff) |
| { |
| psm = 0x1001; |
| } |
| else if (psm & 0x0100) |
| { |
| /* the upper byte must be even */ |
| psm += 0x0100; |
| } |
| |
| /* if psm is in range of reserved BRCM Aware features */ |
| if ((BRCM_RESERVED_PSM_START <= psm)&&(psm <= BRCM_RESERVED_PSM_END)) |
| continue; |
| |
| /* make sure the newlly allocated psm is not used right now */ |
| if ((l2cu_find_rcb_by_psm (psm)) == NULL) |
| done = TRUE; |
| } |
| l2cb.dyn_psm = psm; |
| |
| return(psm); |
| } |
| |
| /******************************************************************************* |
| ** |
| ** Function L2CA_ConnectReq |
| ** |
| ** Description Higher layers call this function to create an L2CAP connection. |
| ** Note that the connection is not established at this time, but |
| ** connection establishment gets started. The callback function |
| ** will be invoked when connection establishes or fails. |
| ** |
| ** Returns the CID of the connection, or 0 if it failed to start |
| ** |
| *******************************************************************************/ |
| UINT16 L2CA_ConnectReq (UINT16 psm, BD_ADDR p_bd_addr) |
| { |
| return L2CA_ErtmConnectReq (psm, p_bd_addr, NULL); |
| } |
| |
| /******************************************************************************* |
| ** |
| ** Function L2CA_ErtmConnectReq |
| ** |
| ** Description Higher layers call this function to create an L2CAP connection. |
| ** Note that the connection is not established at this time, but |
| ** connection establishment gets started. The callback function |
| ** will be invoked when connection establishes or fails. |
| ** |
| ** Returns the CID of the connection, or 0 if it failed to start |
| ** |
| *******************************************************************************/ |
| UINT16 L2CA_ErtmConnectReq (UINT16 psm, BD_ADDR p_bd_addr, tL2CAP_ERTM_INFO *p_ertm_info) |
| { |
| tL2C_LCB *p_lcb; |
| tL2C_CCB *p_ccb; |
| tL2C_RCB *p_rcb; |
| |
| L2CAP_TRACE_API6 ("L2CA_ErtmConnectReq() PSM: 0x%04x BDA: %08x%04x p_ertm_info: 0x%08x allowed:0x%x preferred:%d", psm, |
| (p_bd_addr[0]<<24)+(p_bd_addr[1]<<16)+(p_bd_addr[2]<<8)+p_bd_addr[3], |
| (p_bd_addr[4]<<8)+p_bd_addr[5], p_ertm_info, |
| (p_ertm_info) ? p_ertm_info->allowed_modes : 0, (p_ertm_info) ? p_ertm_info->preferred_mode : 0); |
| |
| /* Fail if we have not established communications with the controller */ |
| if (!BTM_IsDeviceUp()) |
| { |
| L2CAP_TRACE_WARNING0 ("L2CAP connect req - BTU not ready"); |
| return (0); |
| } |
| /* Fail if the PSM is not registered */ |
| if ((p_rcb = l2cu_find_rcb_by_psm (psm)) == NULL) |
| { |
| L2CAP_TRACE_WARNING1 ("L2CAP - no RCB for L2CA_conn_req, PSM: 0x%04x", psm); |
| return (0); |
| } |
| |
| /* First, see if we already have a link to the remote */ |
| if ((p_lcb = l2cu_find_lcb_by_bd_addr (p_bd_addr)) == NULL) |
| { |
| /* No link. Get an LCB and start link establishment */ |
| if ( ((p_lcb = l2cu_allocate_lcb (p_bd_addr, FALSE)) == NULL) |
| || (l2cu_create_conn(p_lcb) == FALSE) ) |
| { |
| L2CAP_TRACE_WARNING2 ("L2CAP - conn not started for PSM: 0x%04x p_lcb: 0x%08x", psm, p_lcb); |
| return (0); |
| } |
| } |
| |
| /* Allocate a channel control block */ |
| if ((p_ccb = l2cu_allocate_ccb (p_lcb, 0)) == NULL) |
| { |
| L2CAP_TRACE_WARNING1 ("L2CAP - no CCB for L2CA_conn_req, PSM: 0x%04x", psm); |
| return (0); |
| } |
| |
| /* Save registration info */ |
| p_ccb->p_rcb = p_rcb; |
| |
| if (p_ertm_info) |
| { |
| p_ccb->ertm_info = *p_ertm_info; |
| |
| /* Replace default indicators with the actual default pool */ |
| if (p_ccb->ertm_info.fcr_rx_pool_id == L2CAP_DEFAULT_ERM_POOL_ID) |
| p_ccb->ertm_info.fcr_rx_pool_id = L2CAP_FCR_RX_POOL_ID; |
| |
| if (p_ccb->ertm_info.fcr_tx_pool_id == L2CAP_DEFAULT_ERM_POOL_ID) |
| p_ccb->ertm_info.fcr_tx_pool_id = L2CAP_FCR_TX_POOL_ID; |
| |
| if (p_ccb->ertm_info.user_rx_pool_id == L2CAP_DEFAULT_ERM_POOL_ID) |
| p_ccb->ertm_info.user_rx_pool_id = HCI_ACL_POOL_ID; |
| |
| if (p_ccb->ertm_info.user_tx_pool_id == L2CAP_DEFAULT_ERM_POOL_ID) |
| p_ccb->ertm_info.user_tx_pool_id = HCI_ACL_POOL_ID; |
| |
| p_ccb->max_rx_mtu = GKI_get_pool_bufsize (p_ertm_info->user_rx_pool_id) - (L2CAP_MIN_OFFSET + L2CAP_SDU_LEN_OFFSET + L2CAP_FCS_LEN); |
| } |
| |
| /* If link is up, start the L2CAP connection */ |
| if (p_lcb->link_state == LST_CONNECTED) |
| { |
| l2c_csm_execute (p_ccb, L2CEVT_L2CA_CONNECT_REQ, NULL); |
| } |
| |
| /* If link is disconnecting, save link info to retry after disconnect |
| * Possible Race condition when a reconnect occurs |
| * on the channel during a disconnect of link. This |
| * ccb will be automatically retried after link disconnect |
| * arrives |
| */ |
| else if (p_lcb->link_state == LST_DISCONNECTING) |
| { |
| L2CAP_TRACE_DEBUG0 ("L2CAP API - link disconnecting: RETRY LATER"); |
| |
| /* Save ccb so it can be started after disconnect is finished */ |
| p_lcb->p_pending_ccb = p_ccb; |
| } |
| |
| L2CAP_TRACE_API2 ("L2CAP - L2CA_conn_req(psm: 0x%04x) returned CID: 0x%04x", psm, p_ccb->local_cid); |
| |
| /* Return the local CID as our handle */ |
| return (p_ccb->local_cid); |
| } |
| |
| |
| /******************************************************************************* |
| ** |
| ** Function L2CA_ConnectRsp |
| ** |
| ** Description Higher layers call this function to accept an incoming |
| ** L2CAP connection, for which they had gotten an connect |
| ** indication callback. |
| ** |
| ** Returns TRUE for success, FALSE for failure |
| ** |
| *******************************************************************************/ |
| BOOLEAN L2CA_ConnectRsp (BD_ADDR p_bd_addr, UINT8 id, UINT16 lcid, UINT16 result, UINT16 status) |
| { |
| return L2CA_ErtmConnectRsp (p_bd_addr, id, lcid, result, status, NULL); |
| } |
| |
| |
| /******************************************************************************* |
| ** |
| ** Function L2CA_ErtmConnectRsp |
| ** |
| ** Description Higher layers call this function to accept an incoming |
| ** L2CAP connection, for which they had gotten an connect |
| ** indication callback. |
| ** |
| ** Returns TRUE for success, FALSE for failure |
| ** |
| *******************************************************************************/ |
| BOOLEAN L2CA_ErtmConnectRsp (BD_ADDR p_bd_addr, UINT8 id, UINT16 lcid, UINT16 result, |
| UINT16 status, tL2CAP_ERTM_INFO *p_ertm_info) |
| { |
| tL2C_LCB *p_lcb; |
| tL2C_CCB *p_ccb; |
| |
| L2CAP_TRACE_API6 ("L2CA_ErtmConnectRsp() CID: 0x%04x Result: %d Status: %d BDA: %08x%04x p_ertm_info:0x%08x", |
| lcid, result, status, |
| (p_bd_addr[0]<<24)+(p_bd_addr[1]<<16)+(p_bd_addr[2]<<8)+p_bd_addr[3], |
| (p_bd_addr[4]<<8)+p_bd_addr[5], p_ertm_info); |
| |
| /* First, find the link control block */ |
| if ((p_lcb = l2cu_find_lcb_by_bd_addr (p_bd_addr)) == NULL) |
| { |
| /* No link. Get an LCB and start link establishment */ |
| L2CAP_TRACE_WARNING0 ("L2CAP - no LCB for L2CA_conn_rsp"); |
| return (FALSE); |
| } |
| |
| /* Now, find the channel control block */ |
| if ((p_ccb = l2cu_find_ccb_by_cid (p_lcb, lcid)) == NULL) |
| { |
| L2CAP_TRACE_WARNING0 ("L2CAP - no CCB for L2CA_conn_rsp"); |
| return (FALSE); |
| } |
| |
| /* The IDs must match */ |
| if (p_ccb->remote_id != id) |
| { |
| L2CAP_TRACE_WARNING2 ("L2CAP - bad id in L2CA_conn_rsp. Exp: %d Got: %d", p_ccb->remote_id, id); |
| return (FALSE); |
| } |
| |
| if (p_ertm_info) |
| { |
| p_ccb->ertm_info = *p_ertm_info; |
| |
| /* Replace default indicators with the actual default pool */ |
| if (p_ccb->ertm_info.fcr_rx_pool_id == L2CAP_DEFAULT_ERM_POOL_ID) |
| p_ccb->ertm_info.fcr_rx_pool_id = L2CAP_FCR_RX_POOL_ID; |
| |
| if (p_ccb->ertm_info.fcr_tx_pool_id == L2CAP_DEFAULT_ERM_POOL_ID) |
| p_ccb->ertm_info.fcr_tx_pool_id = L2CAP_FCR_TX_POOL_ID; |
| |
| if (p_ccb->ertm_info.user_rx_pool_id == L2CAP_DEFAULT_ERM_POOL_ID) |
| p_ccb->ertm_info.user_rx_pool_id = HCI_ACL_POOL_ID; |
| |
| if (p_ccb->ertm_info.user_tx_pool_id == L2CAP_DEFAULT_ERM_POOL_ID) |
| p_ccb->ertm_info.user_tx_pool_id = HCI_ACL_POOL_ID; |
| |
| p_ccb->max_rx_mtu = GKI_get_pool_bufsize (p_ertm_info->user_rx_pool_id) - (L2CAP_MIN_OFFSET + L2CAP_SDU_LEN_OFFSET + L2CAP_FCS_LEN); |
| } |
| |
| if (result == L2CAP_CONN_OK) |
| { |
| l2c_csm_execute (p_ccb, L2CEVT_L2CA_CONNECT_RSP, NULL); |
| } |
| else |
| { |
| tL2C_CONN_INFO conn_info; |
| |
| conn_info.l2cap_result = result; |
| conn_info.l2cap_status = status; |
| |
| if (result == L2CAP_CONN_PENDING) |
| l2c_csm_execute (p_ccb, L2CEVT_L2CA_CONNECT_RSP, &conn_info); |
| else |
| l2c_csm_execute (p_ccb, L2CEVT_L2CA_CONNECT_RSP_NEG, &conn_info); |
| } |
| |
| return (TRUE); |
| } |
| |
| |
| /******************************************************************************* |
| ** |
| ** Function L2CA_ConfigReq |
| ** |
| ** Description Higher layers call this function to send configuration. |
| ** |
| ** Note: The FCR options of p_cfg are not used. |
| ** |
| ** Returns TRUE if configuration sent, else FALSE |
| ** |
| *******************************************************************************/ |
| BOOLEAN L2CA_ConfigReq (UINT16 cid, tL2CAP_CFG_INFO *p_cfg) |
| { |
| tL2C_CCB *p_ccb; |
| |
| L2CAP_TRACE_API5 ("L2CA_ConfigReq() CID 0x%04x: fcr_present:%d (mode %d) mtu_present:%d (%d)", |
| cid, p_cfg->fcr_present, p_cfg->fcr.mode, p_cfg->mtu_present, p_cfg->mtu); |
| |
| /* Find the channel control block. We don't know the link it is on. */ |
| if ((p_ccb = l2cu_find_ccb_by_cid (NULL, cid)) == NULL) |
| { |
| L2CAP_TRACE_WARNING1 ("L2CAP - no CCB for L2CA_cfg_req, CID: %d", cid); |
| return (FALSE); |
| } |
| |
| /* We need to have at least one mode type common with the peer */ |
| if (!l2c_fcr_adj_our_req_options(p_ccb, p_cfg)) |
| return (FALSE); |
| |
| /* Don't adjust FCR options if not used */ |
| if ((!p_cfg->fcr_present)||(p_cfg->fcr.mode == L2CAP_FCR_BASIC_MODE)) |
| { |
| /* FCR and FCS options are not used in basic mode */ |
| p_cfg->fcs_present = FALSE; |
| p_cfg->ext_flow_spec_present = FALSE; |
| |
| if ( (p_cfg->mtu_present) && (p_cfg->mtu > L2CAP_MTU_SIZE) ) |
| { |
| L2CAP_TRACE_WARNING1 ("L2CAP - adjust MTU: %u too large", p_cfg->mtu); |
| p_cfg->mtu = L2CAP_MTU_SIZE; |
| } |
| } |
| |
| /* Save the adjusted configuration in case it needs to be used for renegotiation */ |
| p_ccb->our_cfg = *p_cfg; |
| |
| l2c_csm_execute (p_ccb, L2CEVT_L2CA_CONFIG_REQ, p_cfg); |
| |
| return (TRUE); |
| } |
| |
| |
| /******************************************************************************* |
| ** |
| ** Function L2CA_ConfigRsp |
| ** |
| ** Description Higher layers call this function to send a configuration |
| ** response. |
| ** |
| ** Returns TRUE if configuration response sent, else FALSE |
| ** |
| *******************************************************************************/ |
| BOOLEAN L2CA_ConfigRsp (UINT16 cid, tL2CAP_CFG_INFO *p_cfg) |
| { |
| tL2C_CCB *p_ccb; |
| |
| L2CAP_TRACE_API6 ("L2CA_ConfigRsp() CID: 0x%04x Result: %d MTU present:%d Flush TO:%d FCR:%d FCS:%d", |
| cid, p_cfg->result, p_cfg->mtu_present, p_cfg->flush_to_present, p_cfg->fcr_present, p_cfg->fcs_present); |
| |
| /* Find the channel control block. We don't know the link it is on. */ |
| if ((p_ccb = l2cu_find_ccb_by_cid (NULL, cid)) == NULL) |
| { |
| L2CAP_TRACE_WARNING1 ("L2CAP - no CCB for L2CA_cfg_rsp, CID: %d", cid); |
| return (FALSE); |
| } |
| |
| if ( (p_cfg->result == L2CAP_CFG_OK) || (p_cfg->result == L2CAP_CFG_PENDING) ) |
| l2c_csm_execute (p_ccb, L2CEVT_L2CA_CONFIG_RSP, p_cfg); |
| else |
| { |
| p_cfg->fcr_present = FALSE; /* FCR options already negotiated before this point */ |
| |
| /* Clear out any cached options that are being returned as an error (excluding FCR) */ |
| if (p_cfg->mtu_present) |
| p_ccb->peer_cfg.mtu_present = FALSE; |
| if (p_cfg->flush_to_present) |
| p_ccb->peer_cfg.flush_to_present = FALSE; |
| if (p_cfg->qos_present) |
| p_ccb->peer_cfg.qos_present = FALSE; |
| |
| l2c_csm_execute (p_ccb, L2CEVT_L2CA_CONFIG_RSP_NEG, p_cfg); |
| } |
| |
| return (TRUE); |
| } |
| |
| |
| /******************************************************************************* |
| ** |
| ** Function L2CA_DisconnectReq |
| ** |
| ** Description Higher layers call this function to disconnect a channel. |
| ** |
| ** Returns TRUE if disconnect sent, else FALSE |
| ** |
| *******************************************************************************/ |
| BOOLEAN L2CA_DisconnectReq (UINT16 cid) |
| { |
| tL2C_CCB *p_ccb; |
| |
| L2CAP_TRACE_API1 ("L2CA_DisconnectReq() CID: 0x%04x", cid); |
| |
| /* Find the channel control block. We don't know the link it is on. */ |
| if ((p_ccb = l2cu_find_ccb_by_cid (NULL, cid)) == NULL) |
| { |
| L2CAP_TRACE_WARNING1 ("L2CAP - no CCB for L2CA_disc_req, CID: %d", cid); |
| return (FALSE); |
| } |
| |
| l2c_csm_execute (p_ccb, L2CEVT_L2CA_DISCONNECT_REQ, NULL); |
| |
| return (TRUE); |
| } |
| |
| /******************************************************************************* |
| ** |
| ** Function L2CA_DisconnectRsp |
| ** |
| ** Description Higher layers call this function to acknowledge the |
| ** disconnection of a channel. |
| ** |
| ** Returns void |
| ** |
| *******************************************************************************/ |
| BOOLEAN L2CA_DisconnectRsp (UINT16 cid) |
| { |
| tL2C_CCB *p_ccb; |
| |
| L2CAP_TRACE_API1 ("L2CA_DisconnectRsp() CID: 0x%04x", cid); |
| |
| /* Find the channel control block. We don't know the link it is on. */ |
| if ((p_ccb = l2cu_find_ccb_by_cid (NULL, cid)) == NULL) |
| { |
| L2CAP_TRACE_WARNING1 ("L2CAP - no CCB for L2CA_disc_rsp, CID: %d", cid); |
| return (FALSE); |
| } |
| |
| l2c_csm_execute (p_ccb, L2CEVT_L2CA_DISCONNECT_RSP, NULL); |
| |
| return (TRUE); |
| } |
| |
| /******************************************************************************* |
| ** |
| ** Function L2CA_Ping |
| ** |
| ** Description Higher layers call this function to send an echo request. |
| ** |
| ** Returns TRUE if echo request sent, else FALSE. |
| ** |
| *******************************************************************************/ |
| BOOLEAN L2CA_Ping (BD_ADDR p_bd_addr, tL2CA_ECHO_RSP_CB *p_callback) |
| { |
| tL2C_LCB *p_lcb; |
| |
| L2CAP_TRACE_API6 ("L2CA_Ping() BDA: %02x-%02x-%02x-%02x-%02x-%02x", |
| p_bd_addr[0], p_bd_addr[1], p_bd_addr[2], p_bd_addr[3], p_bd_addr[4], p_bd_addr[5]); |
| |
| /* Fail if we have not established communications with the controller */ |
| if (!BTM_IsDeviceUp()) |
| return (FALSE); |
| |
| /* First, see if we already have a link to the remote */ |
| if ((p_lcb = l2cu_find_lcb_by_bd_addr (p_bd_addr)) == NULL) |
| { |
| /* No link. Get an LCB and start link establishment */ |
| if ((p_lcb = l2cu_allocate_lcb (p_bd_addr, FALSE)) == NULL) |
| { |
| L2CAP_TRACE_WARNING0 ("L2CAP - no LCB for L2CA_ping"); |
| return (FALSE); |
| } |
| if (l2cu_create_conn(p_lcb) == FALSE) |
| { |
| return (FALSE); |
| } |
| |
| p_lcb->p_echo_rsp_cb = p_callback; |
| |
| return (TRUE); |
| } |
| |
| /* We only allow 1 ping outstanding at a time */ |
| if (p_lcb->p_echo_rsp_cb != NULL) |
| { |
| L2CAP_TRACE_WARNING0 ("L2CAP - rejected second L2CA_ping"); |
| return (FALSE); |
| } |
| |
| /* Have a link control block. If link is disconnecting, tell user to retry later */ |
| if (p_lcb->link_state == LST_DISCONNECTING) |
| { |
| L2CAP_TRACE_WARNING0 ("L2CAP - L2CA_ping rejected - link disconnecting"); |
| return (FALSE); |
| } |
| |
| /* Save address of callback */ |
| p_lcb->p_echo_rsp_cb = p_callback; |
| |
| if (p_lcb->link_state == LST_CONNECTED) |
| { |
| l2cu_adj_id(p_lcb, L2CAP_ADJ_BRCM_ID); /* Make sure not using Broadcom ID */ |
| l2cu_send_peer_echo_req (p_lcb, NULL, 0); |
| btu_start_timer (&p_lcb->timer_entry, BTU_TTYPE_L2CAP_LINK, L2CAP_ECHO_RSP_TOUT); |
| } |
| |
| return (TRUE); |
| } |
| |
| /******************************************************************************* |
| ** |
| ** Function L2CA_Echo |
| ** |
| ** Description Higher layers call this function to send an echo request |
| ** with application-specific data. |
| ** |
| ** Returns TRUE if echo request sent, else FALSE. |
| ** |
| *******************************************************************************/ |
| BOOLEAN L2CA_Echo (BD_ADDR p_bd_addr, BT_HDR *p_data, tL2CA_ECHO_DATA_CB *p_callback) |
| { |
| tL2C_LCB *p_lcb; |
| UINT8 *pp; |
| |
| L2CAP_TRACE_API2 ("L2CA_Echo() BDA: %08X%04X", |
| ((p_bd_addr[0] << 24) + (p_bd_addr[1] << 16) + (p_bd_addr[2] << 8) + (p_bd_addr[3])), |
| ((p_bd_addr[4] << 8) + (p_bd_addr[5]))); |
| |
| /* Fail if we have not established communications with the controller */ |
| if (!BTM_IsDeviceUp()) |
| return (FALSE); |
| |
| if ((memcmp(BT_BD_ANY, p_bd_addr, BD_ADDR_LEN) == 0) && (p_data == NULL)) |
| { |
| /* Only register callback without sending message. */ |
| l2cb.p_echo_data_cb = p_callback; |
| return TRUE; |
| } |
| |
| /* We assume the upper layer will call this function only when the link is established. */ |
| if ((p_lcb = l2cu_find_lcb_by_bd_addr (p_bd_addr)) == NULL) |
| { |
| L2CAP_TRACE_ERROR0 ("L2CA_Echo ERROR : link not established"); |
| return FALSE; |
| } |
| |
| if (p_lcb->link_state != LST_CONNECTED) |
| { |
| L2CAP_TRACE_ERROR0 ("L2CA_Echo ERROR : link is not connected"); |
| return FALSE; |
| } |
| |
| /* Save address of callback */ |
| l2cb.p_echo_data_cb = p_callback; |
| |
| /* Set the pointer to the beginning of the data */ |
| pp = (UINT8 *)(p_data + 1) + p_data->offset; |
| l2cu_adj_id(p_lcb, L2CAP_ADJ_BRCM_ID); /* Make sure not using Broadcom ID */ |
| l2cu_send_peer_echo_req (p_lcb, pp, p_data->len); |
| |
| return (TRUE); |
| |
| } |
| |
| /******************************************************************************* |
| ** |
| ** Function L2CA_SetIdleTimeout |
| ** |
| ** Description Higher layers call this function to set the idle timeout for |
| ** a connection, or for all future connections. The "idle timeout" |
| ** is the amount of time that a connection can remain up with |
| ** no L2CAP channels on it. A timeout of zero means that the |
| ** connection will be torn down immediately when the last channel |
| ** is removed. A timeout of 0xFFFF means no timeout. Values are |
| ** in seconds. |
| ** |
| ** Returns TRUE if command succeeded, FALSE if failed |
| ** |
| ** NOTE This timeout takes effect after at least 1 channel has been |
| ** established and removed. L2CAP maintains its own timer from |
| ** whan a connection is established till the first channel is |
| ** set up. |
| *******************************************************************************/ |
| BOOLEAN L2CA_SetIdleTimeout (UINT16 cid, UINT16 timeout, BOOLEAN is_global) |
| { |
| tL2C_CCB *p_ccb; |
| tL2C_LCB *p_lcb; |
| |
| if (is_global) |
| { |
| l2cb.idle_timeout = timeout; |
| } |
| else |
| { |
| /* Find the channel control block. We don't know the link it is on. */ |
| if ((p_ccb = l2cu_find_ccb_by_cid (NULL, cid)) == NULL) |
| { |
| L2CAP_TRACE_WARNING1 ("L2CAP - no CCB for L2CA_SetIdleTimeout, CID: %d", cid); |
| return (FALSE); |
| } |
| |
| p_lcb = p_ccb->p_lcb; |
| |
| if ((p_lcb) && (p_lcb->in_use) && (p_lcb->link_state == LST_CONNECTED)) |
| p_lcb->idle_timeout = timeout; |
| else |
| return (FALSE); |
| } |
| |
| return (TRUE); |
| } |
| |
| /******************************************************************************* |
| ** |
| ** Function L2CA_SetIdleTimeoutByBdAddr |
| ** |
| ** Description Higher layers call this function to set the idle timeout for |
| ** a connection. The "idle timeout" is the amount of time that |
| ** a connection can remain up with no L2CAP channels on it. |
| ** A timeout of zero means that the connection will be torn |
| ** down immediately when the last channel is removed. |
| ** A timeout of 0xFFFF means no timeout. Values are in seconds. |
| ** A bd_addr is the remote BD address. If bd_addr = BT_BD_ANY, |
| ** then the idle timeouts for all active l2cap links will be |
| ** changed. |
| ** |
| ** Returns TRUE if command succeeded, FALSE if failed |
| ** |
| ** NOTE This timeout applies to all logical channels active on the |
| ** ACL link. |
| *******************************************************************************/ |
| BOOLEAN L2CA_SetIdleTimeoutByBdAddr(BD_ADDR bd_addr, UINT16 timeout) |
| { |
| tL2C_LCB *p_lcb; |
| |
| if (memcmp (BT_BD_ANY, bd_addr, BD_ADDR_LEN)) |
| { |
| p_lcb = l2cu_find_lcb_by_bd_addr( bd_addr ); |
| if ((p_lcb) && (p_lcb->in_use) && (p_lcb->link_state == LST_CONNECTED)) |
| p_lcb->idle_timeout = timeout; |
| else |
| return (FALSE); |
| } |
| else |
| { |
| 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->link_state == LST_CONNECTED)) |
| { |
| p_lcb->idle_timeout = timeout; |
| } |
| } |
| } |
| |
| return (TRUE); |
| } |
| |
| /******************************************************************************* |
| ** |
| ** Function L2CA_SetTraceLevel |
| ** |
| ** Description This function sets the trace level for L2CAP. If called with |
| ** a value of 0xFF, it simply reads the current trace level. |
| ** |
| ** Returns the new (current) trace level |
| ** |
| *******************************************************************************/ |
| UINT8 L2CA_SetTraceLevel (UINT8 new_level) |
| { |
| if (new_level != 0xFF) |
| l2cb.l2cap_trace_level = new_level; |
| |
| return (l2cb.l2cap_trace_level); |
| } |
| |
| |
| /******************************************************************************* |
| ** |
| ** Function L2CA_SetDesireRole |
| ** |
| ** Description This function sets the desire role for L2CAP. |
| ** If the new role is L2CAP_ROLE_ALLOW_SWITCH, allow switch on |
| ** HciCreateConnection. |
| ** If the new role is L2CAP_ROLE_DISALLOW_SWITCH, do not allow switch on |
| ** HciCreateConnection. |
| ** |
| ** If the new role is a valid role (HCI_ROLE_MASTER or HCI_ROLE_SLAVE), |
| ** the desire role is set to the new value. Otherwise, it is not changed. |
| ** |
| ** Returns the new (current) role |
| ** |
| *******************************************************************************/ |
| UINT8 L2CA_SetDesireRole (UINT8 new_role) |
| { |
| L2CAP_TRACE_API2 ("L2CA_SetDesireRole() new:x%x, disallow_switch:%d", |
| new_role, l2cb.disallow_switch); |
| |
| if (L2CAP_ROLE_CHECK_SWITCH != (L2CAP_ROLE_CHECK_SWITCH & new_role)) |
| { |
| /* do not process the allow_switch when both bits are set */ |
| if (new_role & L2CAP_ROLE_ALLOW_SWITCH) |
| { |
| l2cb.disallow_switch = FALSE; |
| } |
| if (new_role & L2CAP_ROLE_DISALLOW_SWITCH) |
| { |
| l2cb.disallow_switch = TRUE; |
| } |
| } |
| |
| if (new_role == HCI_ROLE_MASTER || new_role == HCI_ROLE_SLAVE) |
| l2cb.desire_role = new_role; |
| |
| return (l2cb.desire_role); |
| } |
| |
| /******************************************************************************* |
| ** |
| ** Function L2CA_LocalLoopbackReq |
| ** |
| ** Description This function sets up a CID for local loopback |
| ** |
| ** Returns CID of 0 if none. |
| ** |
| *******************************************************************************/ |
| UINT16 L2CA_LocalLoopbackReq (UINT16 psm, UINT16 handle, BD_ADDR p_bd_addr) |
| { |
| tL2C_LCB *p_lcb; |
| tL2C_CCB *p_ccb; |
| tL2C_RCB *p_rcb; |
| |
| L2CAP_TRACE_API2 ("L2CA_LocalLoopbackReq() PSM: %d Handle: 0x%04x", psm, handle); |
| |
| /* Fail if we have not established communications with the controller */ |
| if (!BTM_IsDeviceUp()) |
| { |
| L2CAP_TRACE_WARNING0 ("L2CAP loop req - BTU not ready"); |
| return (0); |
| } |
| |
| /* Fail if the PSM is not registered */ |
| if ((p_rcb = l2cu_find_rcb_by_psm (psm)) == NULL) |
| { |
| L2CAP_TRACE_WARNING1 ("L2CAP - no RCB for L2CA_conn_req, PSM: %d", psm); |
| return (0); |
| } |
| |
| if ((p_lcb = l2cu_allocate_lcb (p_bd_addr, FALSE)) == NULL) |
| { |
| L2CAP_TRACE_WARNING0 ("L2CAP - no LCB for L2CA_conn_req"); |
| return (0); |
| } |
| |
| p_lcb->link_state = LST_CONNECTED; |
| p_lcb->handle = handle; |
| |
| /* Allocate a channel control block */ |
| if ((p_ccb = l2cu_allocate_ccb (p_lcb, 0)) == NULL) |
| { |
| L2CAP_TRACE_WARNING0 ("L2CAP - no CCB for L2CA_conn_req"); |
| return (0); |
| } |
| |
| /* Save registration info */ |
| p_ccb->p_rcb = p_rcb; |
| p_ccb->chnl_state = CST_OPEN; |
| p_ccb->remote_cid = p_ccb->local_cid; |
| p_ccb->config_done = CFG_DONE_MASK; |
| |
| /* Return the local CID as our handle */ |
| return (p_ccb->local_cid); |
| } |
| |
| /******************************************************************************* |
| ** |
| ** Function L2CA_SetAclPriority |
| ** |
| ** 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 L2CA_SetAclPriority (BD_ADDR bd_addr, UINT8 priority) |
| { |
| L2CAP_TRACE_API6 ("L2CA_SetAclPriority() bdaddr: %02x%02x%02x%02x%04x, priority:%d", |
| bd_addr[0], bd_addr[1], bd_addr[2], |
| bd_addr[3], (bd_addr[4] << 8) + bd_addr[5], priority); |
| |
| return (l2cu_set_acl_priority(bd_addr, priority, FALSE)); |
| } |
| |
| /******************************************************************************* |
| ** |
| ** Function L2CA_FlowControl |
| ** |
| ** Description Higher layers call this function to flow control a channel. |
| ** |
| ** data_enabled - TRUE data flows, FALSE data is stopped |
| ** |
| ** Returns TRUE if valid channel, else FALSE |
| ** |
| *******************************************************************************/ |
| BOOLEAN L2CA_FlowControl (UINT16 cid, BOOLEAN data_enabled) |
| { |
| tL2C_CCB *p_ccb; |
| BOOLEAN on_off = !data_enabled; |
| |
| L2CAP_TRACE_API2 ("L2CA_FlowControl(%d) CID: 0x%04x", on_off, cid); |
| |
| /* Find the channel control block. We don't know the link it is on. */ |
| if ((p_ccb = l2cu_find_ccb_by_cid (NULL, cid)) == NULL) |
| { |
| L2CAP_TRACE_WARNING2 ("L2CAP - no CCB for L2CA_FlowControl, CID: 0x%04x data_enabled: %d", cid, data_enabled); |
| return (FALSE); |
| } |
| |
| if (p_ccb->peer_cfg.fcr.mode != L2CAP_FCR_ERTM_MODE) |
| { |
| L2CAP_TRACE_EVENT1 ("L2CA_FlowControl() invalid mode:%d", p_ccb->peer_cfg.fcr.mode); |
| return (FALSE); |
| } |
| if (p_ccb->fcrb.local_busy != on_off) |
| { |
| p_ccb->fcrb.local_busy = on_off; |
| |
| if ( (p_ccb->chnl_state == CST_OPEN) && (!p_ccb->fcrb.wait_ack) ) |
| { |
| if (on_off) |
| l2c_fcr_send_S_frame (p_ccb, L2CAP_FCR_SUP_RNR, 0); |
| else |
| l2c_fcr_send_S_frame (p_ccb, L2CAP_FCR_SUP_RR, L2CAP_FCR_P_BIT); |
| } |
| } |
| |
| return (TRUE); |
| } |
| |
| /******************************************************************************* |
| ** |
| ** Function L2CA_SendTestSFrame |
| ** |
| ** Description Higher layers call this function to send a test S-frame. |
| ** |
| ** Returns TRUE if valid Channel, else FALSE |
| ** |
| *******************************************************************************/ |
| BOOLEAN L2CA_SendTestSFrame (UINT16 cid, UINT8 sup_type, UINT8 back_track) |
| { |
| tL2C_CCB *p_ccb; |
| |
| L2CAP_TRACE_API3 ("L2CA_SendTestSFrame() CID: 0x%04x Type: 0x%02x back_track: %u", cid, sup_type, back_track); |
| |
| /* Find the channel control block. We don't know the link it is on. */ |
| if ((p_ccb = l2cu_find_ccb_by_cid (NULL, cid)) == NULL) |
| { |
| L2CAP_TRACE_WARNING1 ("L2CAP - no CCB for L2CA_SendTestSFrame, CID: %d", cid); |
| return (FALSE); |
| } |
| |
| if ( (p_ccb->chnl_state != CST_OPEN) || (p_ccb->peer_cfg.fcr.mode != L2CAP_FCR_ERTM_MODE) ) |
| return (FALSE); |
| |
| p_ccb->fcrb.next_seq_expected -= back_track; |
| |
| l2c_fcr_send_S_frame (p_ccb, (UINT16)(sup_type & 3), (UINT16)(sup_type & (L2CAP_FCR_P_BIT | L2CAP_FCR_F_BIT))); |
| |
| return (TRUE); |
| } |
| |
| |
| /******************************************************************************* |
| ** |
| ** Function L2CA_SetTxPriority |
| ** |
| ** Description Sets the transmission priority for a channel. |
| ** |
| ** Returns TRUE if a valid channel, else FALSE |
| ** |
| *******************************************************************************/ |
| BOOLEAN L2CA_SetTxPriority (UINT16 cid, tL2CAP_CHNL_PRIORITY priority) |
| { |
| tL2C_CCB *p_ccb; |
| |
| L2CAP_TRACE_API2 ("L2CA_SetTxPriority() CID: 0x%04x, priority:%d", cid, priority); |
| |
| /* Find the channel control block. We don't know the link it is on. */ |
| if ((p_ccb = l2cu_find_ccb_by_cid (NULL, cid)) == NULL) |
| { |
| L2CAP_TRACE_WARNING1 ("L2CAP - no CCB for L2CA_SetTxPriority, CID: %d", cid); |
| return (FALSE); |
| } |
| |
| /* it will update the order of CCB in LCB by priority and update round robin service variables */ |
| l2cu_change_pri_ccb (p_ccb, priority); |
| |
| return (TRUE); |
| } |
| |
| /******************************************************************************* |
| ** |
| ** Function L2CA_SetChnlDataRate |
| ** |
| ** Description Sets the tx/rx data rate for a channel. |
| ** |
| ** Returns TRUE if a valid channel, else FALSE |
| ** |
| *******************************************************************************/ |
| BOOLEAN L2CA_SetChnlDataRate (UINT16 cid, tL2CAP_CHNL_DATA_RATE tx, tL2CAP_CHNL_DATA_RATE rx) |
| { |
| tL2C_CCB *p_ccb; |
| |
| L2CAP_TRACE_API3 ("L2CA_SetChnlDataRate() CID: 0x%04x, tx:%d, rx:%d", cid, tx, rx); |
| |
| /* Find the channel control block. We don't know the link it is on. */ |
| if ((p_ccb = l2cu_find_ccb_by_cid (NULL, cid)) == NULL) |
| { |
| L2CAP_TRACE_WARNING1 ("L2CAP - no CCB for L2CA_SetChnlDataRate, CID: %d", cid); |
| return (FALSE); |
| } |
| |
| p_ccb->tx_data_rate = tx; |
| p_ccb->rx_data_rate = rx; |
| |
| /* Adjust channel buffer allocation */ |
| l2c_link_adjust_chnl_allocation (); |
| |
| return(TRUE); |
| } |
| |
| /******************************************************************************* |
| ** |
| ** Function L2CA_SetFlushTimeout |
| ** |
| ** Description This function set the automatic flush time out in Baseband |
| ** for ACL-U packets. |
| ** BdAddr : the remote BD address of ACL link. If it is BT_DB_ANY |
| ** then the flush time out will be applied to all ACL link. |
| ** FlushTimeout: flush time out in ms |
| ** 0x0000 : No automatic flush |
| ** L2CAP_NO_RETRANSMISSION : No retransmission |
| ** 0x0002 - 0xFFFE : flush time out, if (flush_tout*8)+3/5) |
| ** <= HCI_MAX_AUTO_FLUSH_TOUT (in 625us slot). |
| ** Otherwise, return FALSE. |
| ** L2CAP_NO_AUTOMATIC_FLUSH : No automatic flush |
| ** |
| ** Returns TRUE if command succeeded, FALSE if failed |
| ** |
| ** NOTE This flush timeout applies to all logical channels active on the |
| ** ACL link. |
| *******************************************************************************/ |
| BOOLEAN L2CA_SetFlushTimeout (BD_ADDR bd_addr, UINT16 flush_tout) |
| { |
| tL2C_LCB *p_lcb; |
| UINT16 hci_flush_to; |
| UINT32 temp; |
| |
| /* no automatic flush (infinite timeout) */ |
| if (flush_tout == 0x0000) |
| { |
| hci_flush_to = flush_tout; |
| flush_tout = L2CAP_NO_AUTOMATIC_FLUSH; |
| } |
| /* no retransmission */ |
| else if (flush_tout == L2CAP_NO_RETRANSMISSION) |
| { |
| /* not mandatory range for controller */ |
| /* Packet is flushed before getting any ACK/NACK */ |
| /* To do this, flush timeout should be 1 baseband slot */ |
| hci_flush_to = flush_tout; |
| } |
| /* no automatic flush (infinite timeout) */ |
| else if (flush_tout == L2CAP_NO_AUTOMATIC_FLUSH) |
| { |
| hci_flush_to = 0x0000; |
| } |
| else |
| { |
| /* convert L2CAP flush_to to 0.625 ms units, with round */ |
| temp = (((UINT32)flush_tout * 8) + 3) / 5; |
| |
| /* if L2CAP flush_to within range of HCI, set HCI flush timeout */ |
| if (temp > HCI_MAX_AUTO_FLUSH_TOUT) |
| { |
| L2CAP_TRACE_WARNING1("WARNING L2CA_SetFlushTimeout timeout(0x%x) is out of range", flush_tout); |
| return FALSE; |
| } |
| else |
| { |
| hci_flush_to = (UINT16)temp; |
| } |
| } |
| |
| if (memcmp (BT_BD_ANY, bd_addr, BD_ADDR_LEN)) |
| { |
| p_lcb = l2cu_find_lcb_by_bd_addr (bd_addr); |
| |
| if ((p_lcb) && (p_lcb->in_use) && (p_lcb->link_state == LST_CONNECTED)) |
| { |
| if (p_lcb->link_flush_tout != flush_tout) |
| { |
| p_lcb->link_flush_tout = flush_tout; |
| |
| L2CAP_TRACE_API4 ("L2CA_SetFlushTimeout 0x%04x ms for bd_addr [...;%02x%02x%02x]", |
| flush_tout, bd_addr[3], bd_addr[4], bd_addr[5]); |
| |
| if (!btsnd_hcic_write_auto_flush_tout (p_lcb->handle, hci_flush_to)) |
| return (FALSE); |
| } |
| } |
| else |
| { |
| L2CAP_TRACE_WARNING3 ("WARNING L2CA_SetFlushTimeout No lcb for bd_addr [...;%02x%02x%02x]", |
| bd_addr[3], bd_addr[4], bd_addr[5]); |
| return (FALSE); |
| } |
| } |
| else |
| { |
| int xx; |
| p_lcb = &l2cb.lcb_pool[0]; |
| |
| for (xx = 0; xx < MAX_L2CAP_LINKS; xx++, p_lcb++) |
| { |
| if ((p_lcb->in_use) && (p_lcb->link_state == LST_CONNECTED)) |
| { |
| if (p_lcb->link_flush_tout != flush_tout) |
| { |
| p_lcb->link_flush_tout = flush_tout; |
| |
| L2CAP_TRACE_API4 ("L2CA_SetFlushTimeout 0x%04x ms for bd_addr [...;%02x%02x%02x]", |
| flush_tout, p_lcb->remote_bd_addr[3], |
| p_lcb->remote_bd_addr[4], p_lcb->remote_bd_addr[5]); |
| |
| if (!btsnd_hcic_write_auto_flush_tout(p_lcb->handle, hci_flush_to)) |
| return (FALSE); |
| } |
| } |
| } |
| } |
| |
| return (TRUE); |
| } |
| |
| /******************************************************************************* |
| ** |
| ** Function L2CA_GetPeerFeatures |
| ** |
| ** Description Get a peers features and fixed channel map |
| ** |
| ** Parameters: BD address of the peer |
| ** Pointers to features and channel mask storage area |
| ** |
| ** Return value: TRUE if peer is connected |
| ** |
| *******************************************************************************/ |
| BOOLEAN L2CA_GetPeerFeatures (BD_ADDR bd_addr, UINT32 *p_ext_feat, UINT8 *p_chnl_mask) |
| { |
| tL2C_LCB *p_lcb; |
| |
| /* We must already have a link to the remote */ |
| if ((p_lcb = l2cu_find_lcb_by_bd_addr (bd_addr)) == NULL) |
| { |
| L2CAP_TRACE_WARNING2 ("L2CA_GetPeerFeatures() No BDA: %08x%04x", |
| (bd_addr[0]<<24)+(bd_addr[1]<<16)+(bd_addr[2]<<8)+bd_addr[3], |
| (bd_addr[4]<<8)+bd_addr[5]); |
| return (FALSE); |
| } |
| |
| L2CAP_TRACE_API4 ("L2CA_GetPeerFeatures() BDA: %08x%04x ExtFea: 0x%08x Chnl_Mask[0]: 0x%02x", |
| (bd_addr[0]<<24)+(bd_addr[1]<<16)+(bd_addr[2]<<8)+bd_addr[3], |
| (bd_addr[4]<<8)+bd_addr[5], p_lcb->peer_ext_fea, p_lcb->peer_chnl_mask[0]); |
| |
| *p_ext_feat = p_lcb->peer_ext_fea; |
| |
| memcpy (p_chnl_mask, p_lcb->peer_chnl_mask, L2CAP_FIXED_CHNL_ARRAY_SIZE); |
| |
| return (TRUE); |
| } |
| |
| /******************************************************************************* |
| ** |
| ** Function L2CA_GetBDAddrbyHandle |
| ** |
| ** Description Get BD address for the given HCI handle |
| ** |
| ** Parameters: HCI handle |
| ** BD address of the peer |
| ** |
| ** Return value: TRUE if found lcb for the given handle, FALSE otherwise |
| ** |
| *******************************************************************************/ |
| BOOLEAN L2CA_GetBDAddrbyHandle (UINT16 handle, BD_ADDR bd_addr) |
| { |
| tL2C_LCB *p_lcb = NULL; |
| BOOLEAN found_dev = FALSE; |
| |
| p_lcb = l2cu_find_lcb_by_handle (handle); |
| if (p_lcb) |
| { |
| found_dev = TRUE; |
| memcpy (bd_addr, p_lcb->remote_bd_addr, BD_ADDR_LEN); |
| } |
| |
| return found_dev; |
| } |
| |
| /******************************************************************************* |
| ** |
| ** Function L2CA_GetChnlFcrMode |
| ** |
| ** Description Get the channel FCR mode |
| ** |
| ** Parameters: Local CID |
| ** |
| ** Return value: Channel mode |
| ** |
| *******************************************************************************/ |
| UINT8 L2CA_GetChnlFcrMode (UINT16 lcid) |
| { |
| tL2C_CCB *p_ccb = l2cu_find_ccb_by_cid (NULL, lcid); |
| |
| if (p_ccb) |
| { |
| L2CAP_TRACE_API1 ("L2CA_GetChnlFcrMode() returns mode %d", p_ccb->peer_cfg.fcr.mode); |
| return (p_ccb->peer_cfg.fcr.mode); |
| } |
| |
| L2CAP_TRACE_API0 ("L2CA_GetChnlFcrMode() returns mode L2CAP_FCR_BASIC_MODE"); |
| return (L2CAP_FCR_BASIC_MODE); |
| } |
| |
| #if (L2CAP_NUM_FIXED_CHNLS > 0) |
| /******************************************************************************* |
| ** |
| ** Function L2CA_RegisterFixedChannel |
| ** |
| ** Description Register a fixed channel. |
| ** |
| ** Parameters: Fixed Channel # |
| ** Channel Callbacks and config |
| ** |
| ** Return value: - |
| ** |
| *******************************************************************************/ |
| BOOLEAN L2CA_RegisterFixedChannel (UINT16 fixed_cid, tL2CAP_FIXED_CHNL_REG *p_freg) |
| { |
| if ( (fixed_cid < L2CAP_FIRST_FIXED_CHNL) || (fixed_cid > L2CAP_LAST_FIXED_CHNL) ) |
| { |
| L2CAP_TRACE_ERROR1 ("L2CA_RegisterFixedChannel() Invalid CID: 0x%04x", fixed_cid); |
| |
| return (FALSE); |
| } |
| |
| l2cb.fixed_reg[fixed_cid - L2CAP_FIRST_FIXED_CHNL] = *p_freg; |
| return (TRUE); |
| } |
| |
| /******************************************************************************* |
| ** |
| ** Function L2CA_ConnectFixedChnl |
| ** |
| ** Description Connect an fixed signalling channel to a remote device. |
| ** |
| ** Parameters: Fixed CID |
| ** BD Address of remote |
| ** |
| ** Return value: TRUE if connection started |
| ** |
| *******************************************************************************/ |
| BOOLEAN L2CA_ConnectFixedChnl (UINT16 fixed_cid, BD_ADDR rem_bda) |
| { |
| tL2C_LCB *p_lcb; |
| #if BLE_INCLUDED == TRUE |
| UINT16 reason; |
| #endif |
| |
| L2CAP_TRACE_API3 ("L2CA_ConnectFixedChnl() CID: 0x%04x BDA: %08x%04x", fixed_cid, |
| (rem_bda[0]<<24)+(rem_bda[1]<<16)+(rem_bda[2]<<8)+rem_bda[3], (rem_bda[4]<<8)+rem_bda[5]); |
| |
| /* Check CID is valid and registered */ |
| if ( (fixed_cid < L2CAP_FIRST_FIXED_CHNL) || (fixed_cid > L2CAP_LAST_FIXED_CHNL) |
| || (l2cb.fixed_reg[fixed_cid - L2CAP_FIRST_FIXED_CHNL].pL2CA_FixedData_Cb == NULL) ) |
| { |
| L2CAP_TRACE_ERROR1 ("L2CA_ConnectFixedChnl() Invalid CID: 0x%04x", fixed_cid); |
| return (FALSE); |
| } |
| |
| /* Fail if BT is not yet up */ |
| if (!BTM_IsDeviceUp()) |
| { |
| L2CAP_TRACE_WARNING1 ("L2CA_ConnectFixedChnl(0x%04x) - BTU not ready", fixed_cid); |
| return (FALSE); |
| } |
| |
| /* If we already have a link to the remote, check if it supports that CID */ |
| if ((p_lcb = l2cu_find_lcb_by_bd_addr (rem_bda)) != NULL) |
| { |
| if (!(p_lcb->peer_chnl_mask[0] & (1 << fixed_cid))) |
| { |
| L2CAP_TRACE_EVENT3 ("L2CA_ConnectFixedChnl() CID: 0x%04x BDA: %08x%04x not supported", fixed_cid, |
| (rem_bda[0]<<24)+(rem_bda[1]<<16)+(rem_bda[2]<<8)+rem_bda[3], (rem_bda[4]<<8)+rem_bda[5]); |
| return (FALSE); |
| } |
| /* Get a CCB and link the lcb to it */ |
| if (!l2cu_initialize_fixed_ccb (p_lcb, fixed_cid, &l2cb.fixed_reg[fixed_cid - L2CAP_FIRST_FIXED_CHNL].fixed_chnl_opts)) |
| { |
| L2CAP_TRACE_WARNING1 ("L2CA_ConnectFixedChnl(0x%04x) - LCB but no CCB", fixed_cid); |
| return (FALSE); |
| } |
| #if BLE_INCLUDED == TRUE |
| reason = (p_lcb->is_ble_link) ? 1: 0; |
| (*l2cb.fixed_reg[fixed_cid - L2CAP_FIRST_FIXED_CHNL].pL2CA_FixedConn_Cb)(p_lcb->remote_bd_addr, TRUE, reason); |
| #else |
| (*l2cb.fixed_reg[fixed_cid - L2CAP_FIRST_FIXED_CHNL].pL2CA_FixedConn_Cb)(p_lcb->remote_bd_addr, TRUE, 0); |
| #endif |
| return (TRUE); |
| } |
| |
| /* No link. Get an LCB and start link establishment */ |
| if ((p_lcb = l2cu_allocate_lcb (rem_bda, FALSE)) == NULL) |
| { |
| L2CAP_TRACE_WARNING1 ("L2CA_ConnectFixedChnl(0x%04x) - no LCB", fixed_cid); |
| return (FALSE); |
| } |
| |
| /* Get a CCB and link the lcb to it */ |
| if (!l2cu_initialize_fixed_ccb (p_lcb, fixed_cid, &l2cb.fixed_reg[fixed_cid - L2CAP_FIRST_FIXED_CHNL].fixed_chnl_opts)) |
| { |
| p_lcb->disc_reason = L2CAP_CONN_NO_RESOURCES; |
| L2CAP_TRACE_WARNING1 ("L2CA_ConnectFixedChnl(0x%04x) - no CCB", fixed_cid); |
| l2cu_release_lcb (p_lcb); |
| return (FALSE); |
| } |
| |
| return (l2cu_create_conn(p_lcb)); |
| } |
| |
| /******************************************************************************* |
| ** |
| ** Function L2CA_SendFixedChnlData |
| ** |
| ** Description Write data on a fixed channel. |
| ** |
| ** Parameters: Fixed CID |
| ** BD Address of remote |
| ** Pointer to buffer of type BT_HDR |
| ** |
| ** Return value L2CAP_DW_SUCCESS, if data accepted |
| ** L2CAP_DW_FAILED, if error |
| ** |
| *******************************************************************************/ |
| UINT16 L2CA_SendFixedChnlData (UINT16 fixed_cid, BD_ADDR rem_bda, BT_HDR *p_buf) |
| { |
| tL2C_LCB *p_lcb; |
| |
| L2CAP_TRACE_API3 ("L2CA_SendFixedChnlData() CID: 0x%04x BDA: %08x%04x", fixed_cid, |
| (rem_bda[0]<<24)+(rem_bda[1]<<16)+(rem_bda[2]<<8)+rem_bda[3], (rem_bda[4]<<8)+rem_bda[5]); |
| |
| /* Check CID is valid and registered */ |
| if ( (fixed_cid < L2CAP_FIRST_FIXED_CHNL) || (fixed_cid > L2CAP_LAST_FIXED_CHNL) |
| || (l2cb.fixed_reg[fixed_cid - L2CAP_FIRST_FIXED_CHNL].pL2CA_FixedData_Cb == NULL) ) |
| { |
| L2CAP_TRACE_ERROR1 ("L2CA_SendFixedChnlData() Invalid CID: 0x%04x", fixed_cid); |
| return (L2CAP_DW_FAILED); |
| } |
| |
| /* Fail if BT is not yet up */ |
| if (!BTM_IsDeviceUp()) |
| { |
| L2CAP_TRACE_WARNING1 ("L2CA_SendFixedChnlData(0x%04x) - BTU not ready", fixed_cid); |
| return (L2CAP_DW_FAILED); |
| } |
| |
| /* We need to have a link up */ |
| if ((p_lcb = l2cu_find_lcb_by_bd_addr (rem_bda)) == NULL) |
| { |
| L2CAP_TRACE_WARNING1 ("L2CA_SendFixedChnlData(0x%04x) - no LCB", fixed_cid); |
| return (L2CAP_DW_FAILED); |
| } |
| |
| if ((p_lcb->peer_chnl_mask[0] & (1 << fixed_cid)) == 0) |
| { |
| L2CAP_TRACE_WARNING1 ("L2CA_SendFixedChnlData() - peer does not support fixed chnl: 0x%04x", fixed_cid); |
| return (L2CAP_DW_FAILED); |
| } |
| |
| p_buf->event = 0; |
| p_buf->layer_specific = L2CAP_FLUSHABLE_CH_BASED; |
| |
| if (!p_lcb->p_fixed_ccbs[fixed_cid - L2CAP_FIRST_FIXED_CHNL]) |
| { |
| if (!l2cu_initialize_fixed_ccb (p_lcb, fixed_cid, &l2cb.fixed_reg[fixed_cid - L2CAP_FIRST_FIXED_CHNL].fixed_chnl_opts)) |
| { |
| L2CAP_TRACE_WARNING1 ("L2CA_SendFixedChnlData() - no CCB for chnl: 0x%4x", fixed_cid); |
| return (L2CAP_DW_FAILED); |
| } |
| } |
| |
| l2c_enqueue_peer_data (p_lcb->p_fixed_ccbs[fixed_cid - L2CAP_FIRST_FIXED_CHNL], p_buf); |
| |
| l2c_link_check_send_pkts (p_lcb, NULL, NULL); |
| |
| /* If there is no dynamic CCB on the link, restart the idle timer each time something is sent */ |
| if (p_lcb->in_use && p_lcb->link_state == LST_CONNECTED && !p_lcb->ccb_queue.p_first_ccb) |
| { |
| l2cu_no_dynamic_ccbs (p_lcb); |
| } |
| |
| return (L2CAP_DW_SUCCESS); |
| } |
| |
| /******************************************************************************* |
| ** |
| ** Function L2CA_RemoveFixedChnl |
| ** |
| ** Description Remove a fixed channel to a remote device. |
| ** |
| ** Parameters: Fixed CID |
| ** BD Address of remote |
| ** Idle timeout to use (or 0xFFFF if don't care) |
| ** |
| ** Return value: TRUE if channel removed |
| ** |
| *******************************************************************************/ |
| BOOLEAN L2CA_RemoveFixedChnl (UINT16 fixed_cid, BD_ADDR rem_bda) |
| { |
| tL2C_LCB *p_lcb; |
| tL2C_CCB *p_ccb; |
| |
| /* Check CID is valid and registered */ |
| if ( (fixed_cid < L2CAP_FIRST_FIXED_CHNL) || (fixed_cid > L2CAP_LAST_FIXED_CHNL) |
| || (l2cb.fixed_reg[fixed_cid - L2CAP_FIRST_FIXED_CHNL].pL2CA_FixedData_Cb == NULL) ) |
| { |
| L2CAP_TRACE_ERROR1 ("L2CA_RemoveFixedChnl() Invalid CID: 0x%04x", fixed_cid); |
| return (FALSE); |
| } |
| |
| /* Is a fixed channel connected to the remote BDA ?*/ |
| p_lcb = l2cu_find_lcb_by_bd_addr (rem_bda); |
| if ( ((p_lcb) == NULL) || (!p_lcb->p_fixed_ccbs[fixed_cid - L2CAP_FIRST_FIXED_CHNL]) ) |
| { |
| L2CAP_TRACE_WARNING3 ("L2CA_RemoveFixedChnl() CID: 0x%04x BDA: %08x%04x not connected", fixed_cid, |
| (rem_bda[0]<<24)+(rem_bda[1]<<16)+(rem_bda[2]<<8)+rem_bda[3], (rem_bda[4]<<8)+rem_bda[5]); |
| return (FALSE); |
| } |
| |
| L2CAP_TRACE_API3 ("L2CA_RemoveFixedChnl() CID: 0x%04x BDA: %08x%04x", fixed_cid, |
| (rem_bda[0]<<24)+(rem_bda[1]<<16)+(rem_bda[2]<<8)+rem_bda[3], (rem_bda[4]<<8)+rem_bda[5]); |
| |
| /* Release the CCB, starting an inactivity timeout on the LCB if no other CCBs exist */ |
| p_ccb = p_lcb->p_fixed_ccbs[fixed_cid - L2CAP_FIRST_FIXED_CHNL]; |
| |
| p_lcb->p_fixed_ccbs[fixed_cid - L2CAP_FIRST_FIXED_CHNL] = NULL; |
| p_lcb->disc_reason = HCI_ERR_CONN_CAUSE_LOCAL_HOST; |
| |
| #if BLE_INCLUDED == TRUE |
| if (fixed_cid == L2CAP_ATT_CID && !p_lcb->ccb_queue.p_first_ccb) |
| p_lcb->idle_timeout = 0; |
| #endif |
| |
| l2cu_release_ccb (p_ccb); |
| |
| return (TRUE); |
| } |
| |
| /******************************************************************************* |
| ** |
| ** Function L2CA_SetFixedChannelTout |
| ** |
| ** Description Higher layers call this function to set the idle timeout for |
| ** a fixed channel. The "idle timeout" is the amount of time that |
| ** a connection can remain up with no L2CAP channels on it. |
| ** A timeout of zero means that the connection will be torn |
| ** down immediately when the last channel is removed. |
| ** A timeout of 0xFFFF means no timeout. Values are in seconds. |
| ** A bd_addr is the remote BD address. If bd_addr = BT_BD_ANY, |
| ** then the idle timeouts for all active l2cap links will be |
| ** changed. |
| ** |
| ** Returns TRUE if command succeeded, FALSE if failed |
| ** |
| *******************************************************************************/ |
| BOOLEAN L2CA_SetFixedChannelTout (BD_ADDR rem_bda, UINT16 fixed_cid, UINT16 idle_tout) |
| { |
| tL2C_LCB *p_lcb; |
| |
| /* Is a fixed channel connected to the remote BDA ?*/ |
| p_lcb = l2cu_find_lcb_by_bd_addr (rem_bda); |
| if ( ((p_lcb) == NULL) || (!p_lcb->p_fixed_ccbs[fixed_cid - L2CAP_FIRST_FIXED_CHNL]) ) |
| { |
| L2CAP_TRACE_WARNING3 ("L2CA_SetFixedChannelTout() CID: 0x%04x BDA: %08x%04x not connected", fixed_cid, |
| (rem_bda[0]<<24)+(rem_bda[1]<<16)+(rem_bda[2]<<8)+rem_bda[3], (rem_bda[4]<<8)+rem_bda[5]); |
| return (FALSE); |
| } |
| |
| p_lcb->p_fixed_ccbs[fixed_cid - L2CAP_FIRST_FIXED_CHNL]->fixed_chnl_idle_tout = idle_tout; |
| |
| if (p_lcb->in_use && p_lcb->link_state == LST_CONNECTED && !p_lcb->ccb_queue.p_first_ccb) |
| { |
| /* If there are no dynamic CCBs, (re)start the idle timer in case we changed it */ |
| l2cu_no_dynamic_ccbs (p_lcb); |
| } |
| |
| return (TRUE); |
| } |
| |
| #endif /* #if (L2CAP_NUM_FIXED_CHNLS > 0) */ |
| |
| /******************************************************************************* |
| ** |
| ** Function L2CA_GetCurrentConfig |
| ** |
| ** Description This function returns configurations of L2CAP channel |
| ** pp_our_cfg : pointer of our saved configuration options |
| ** p_our_cfg_bits : valid config in bitmap |
| ** pp_peer_cfg: pointer of peer's saved configuration options |
| ** p_peer_cfg_bits : valid config in bitmap |
| ** |
| ** Returns TRUE if successful |
| ** |
| *******************************************************************************/ |
| BOOLEAN L2CA_GetCurrentConfig (UINT16 lcid, |
| tL2CAP_CFG_INFO **pp_our_cfg, tL2CAP_CH_CFG_BITS *p_our_cfg_bits, |
| tL2CAP_CFG_INFO **pp_peer_cfg, tL2CAP_CH_CFG_BITS *p_peer_cfg_bits) |
| { |
| tL2C_CCB *p_ccb; |
| |
| L2CAP_TRACE_API1 ("L2CA_GetCurrentConfig() CID: 0x%04x", lcid); |
| |
| p_ccb = l2cu_find_ccb_by_cid(NULL, lcid); |
| |
| if (p_ccb) |
| { |
| *pp_our_cfg = &(p_ccb->our_cfg); |
| |
| /* convert valid config items into bitmap */ |
| *p_our_cfg_bits = 0; |
| if (p_ccb->our_cfg.mtu_present) |
| *p_our_cfg_bits |= L2CAP_CH_CFG_MASK_MTU; |
| if (p_ccb->our_cfg.qos_present) |
| *p_our_cfg_bits |= L2CAP_CH_CFG_MASK_QOS; |
| if (p_ccb->our_cfg.flush_to_present) |
| *p_our_cfg_bits |= L2CAP_CH_CFG_MASK_FLUSH_TO; |
| if (p_ccb->our_cfg.fcr_present) |
| *p_our_cfg_bits |= L2CAP_CH_CFG_MASK_FCR; |
| if (p_ccb->our_cfg.fcs_present) |
| *p_our_cfg_bits |= L2CAP_CH_CFG_MASK_FCS; |
| if (p_ccb->our_cfg.ext_flow_spec_present) |
| *p_our_cfg_bits |= L2CAP_CH_CFG_MASK_EXT_FLOW_SPEC; |
| |
| *pp_peer_cfg = &(p_ccb->peer_cfg); |
| *p_peer_cfg_bits = p_ccb->peer_cfg_bits; |
| |
| return TRUE; |
| } |
| else |
| { |
| L2CAP_TRACE_ERROR1 ("No CCB for CID:0x%04x", lcid); |
| return FALSE; |
| } |
| } |
| |
| /******************************************************************************* |
| ** |
| ** Function L2CA_RegForNoCPEvt |
| ** |
| ** Description Register callback for Number of Completed Packets event. |
| ** |
| ** Input Param p_cb - callback for Number of completed packets event |
| ** p_bda - BT address of remote device |
| ** |
| ** Returns TRUE if registered OK, else FALSE |
| ** |
| *******************************************************************************/ |
| BOOLEAN L2CA_RegForNoCPEvt(tL2CA_NOCP_CB *p_cb, BD_ADDR p_bda) |
| { |
| tL2C_LCB *p_lcb; |
| |
| /* Find the link that is associated with this remote bdaddr */ |
| p_lcb = l2cu_find_lcb_by_bd_addr (p_bda); |
| |
| /* If no link for this handle, nothing to do. */ |
| if (!p_lcb) |
| return FALSE; |
| |
| p_lcb->p_nocp_cb = p_cb; |
| |
| return TRUE; |
| } |
| |
| /******************************************************************************* |
| ** |
| ** Function L2CA_DataWrite |
| ** |
| ** Description Higher layers call this function to write data. |
| ** |
| ** Returns L2CAP_DW_SUCCESS, if data accepted, else FALSE |
| ** L2CAP_DW_CONGESTED, if data accepted and the channel is congested |
| ** L2CAP_DW_FAILED, if error |
| ** |
| *******************************************************************************/ |
| UINT8 L2CA_DataWrite (UINT16 cid, BT_HDR *p_data) |
| { |
| L2CAP_TRACE_API2 ("L2CA_DataWrite() CID: 0x%04x Len: %d", cid, p_data->len); |
| return l2c_data_write (cid, p_data, L2CAP_FLUSHABLE_CH_BASED); |
| } |
| |
| /******************************************************************************* |
| ** |
| ** Function L2CA_SetChnlFlushability |
| ** |
| ** Description Higher layers call this function to set a channels |
| ** flushability flags |
| ** |
| ** Returns TRUE if CID found, else FALSE |
| ** |
| *******************************************************************************/ |
| BOOLEAN L2CA_SetChnlFlushability (UINT16 cid, BOOLEAN is_flushable) |
| { |
| #if (L2CAP_NON_FLUSHABLE_PB_INCLUDED == TRUE) |
| |
| tL2C_CCB *p_ccb; |
| |
| /* Find the channel control block. We don't know the link it is on. */ |
| if ((p_ccb = l2cu_find_ccb_by_cid (NULL, cid)) == NULL) |
| { |
| L2CAP_TRACE_WARNING1 ("L2CAP - no CCB for L2CA_SetChnlFlushability, CID: %d", cid); |
| return (FALSE); |
| } |
| |
| p_ccb->is_flushable = is_flushable; |
| |
| L2CAP_TRACE_API2 ("L2CA_SetChnlFlushability() CID: 0x%04x is_flushable: %d", cid, is_flushable); |
| |
| #endif |
| |
| return (TRUE); |
| } |
| |
| /******************************************************************************* |
| ** |
| ** Function L2CA_DataWriteEx |
| ** |
| ** Description Higher layers call this function to write data with extended |
| ** flags. |
| ** flags : L2CAP_FLUSHABLE_CH_BASED |
| ** L2CAP_FLUSHABLE_PKT |
| ** L2CAP_NON_FLUSHABLE_PKT |
| ** |
| ** Returns L2CAP_DW_SUCCESS, if data accepted, else FALSE |
| ** L2CAP_DW_CONGESTED, if data accepted and the channel is congested |
| ** L2CAP_DW_FAILED, if error |
| ** |
| *******************************************************************************/ |
| UINT8 L2CA_DataWriteEx (UINT16 cid, BT_HDR *p_data, UINT16 flags) |
| { |
| L2CAP_TRACE_API3 ("L2CA_DataWriteEx() CID: 0x%04x Len: %d Flags:0x%04X", |
| cid, p_data->len, flags); |
| return l2c_data_write (cid, p_data, flags); |
| } |
| |
| /******************************************************************************* |
| ** |
| ** Function L2CA_FlushChannel |
| ** |
| ** Description This function flushes none, some or all buffers queued up |
| ** for xmission for a particular CID. If called with |
| ** L2CAP_FLUSH_CHANS_GET (0), it simply returns the number |
| ** of buffers queued for that CID L2CAP_FLUSH_CHANS_ALL (0xffff) |
| ** flushes all buffers. All other values specifies the maximum |
| ** buffers to flush. |
| ** |
| ** Returns Number of buffers left queued for that CID |
| ** |
| *******************************************************************************/ |
| UINT16 L2CA_FlushChannel (UINT16 lcid, UINT16 num_to_flush) |
| { |
| tL2C_CCB *p_ccb; |
| tL2C_LCB *p_lcb; |
| UINT16 num_left = 0, |
| num_flushed1 = 0, |
| num_flushed2 = 0; |
| BT_HDR *p_buf1, *p_buf; |
| |
| p_ccb = l2cu_find_ccb_by_cid(NULL, lcid); |
| |
| if ( !p_ccb || ((p_lcb = p_ccb->p_lcb) == NULL) ) |
| { |
| L2CAP_TRACE_WARNING1 ("L2CA_FlushChannel() abnormally returning 0 CID: 0x%04x", lcid); |
| return (0); |
| } |
| |
| if (num_to_flush != L2CAP_FLUSH_CHANS_GET) |
| { |
| L2CAP_TRACE_API4 ("L2CA_FlushChannel (FLUSH) CID: 0x%04x NumToFlush: %d QC: %u pFirst: 0x%08x", |
| lcid, num_to_flush, p_ccb->xmit_hold_q.count, p_ccb->xmit_hold_q.p_first); |
| } |
| else |
| { |
| L2CAP_TRACE_API1 ("L2CA_FlushChannel (QUERY) CID: 0x%04x", lcid); |
| } |
| |
| /* Cannot flush eRTM buffers once they have a sequence number */ |
| if (p_ccb->peer_cfg.fcr.mode != L2CAP_FCR_ERTM_MODE) |
| { |
| #if L2CAP_NON_FLUSHABLE_PB_INCLUDED == TRUE |
| if (num_to_flush != L2CAP_FLUSH_CHANS_GET) |
| { |
| /* If the controller supports enhanced flush, flush the data queued at the controller */ |
| if ( (HCI_NON_FLUSHABLE_PB_SUPPORTED(BTM_ReadLocalFeatures ())) |
| && (BTM_GetNumScoLinks() == 0) ) |
| { |
| if ( l2cb.is_flush_active == FALSE ) |
| { |
| l2cb.is_flush_active = TRUE; |
| |
| /* The only packet type defined - 0 - Automatically-Flushable Only */ |
| btsnd_hcic_enhanced_flush (p_lcb->handle, 0); |
| } |
| } |
| } |
| #endif |
| |
| p_buf = (BT_HDR *)p_lcb->link_xmit_data_q.p_first; |
| |
| /* First flush the number we are asked to flush */ |
| while ((p_buf != NULL) && (num_to_flush != 0)) |
| { |
| /* Do not flush other CIDs or partial segments */ |
| if ( (p_buf->layer_specific == 0) && (p_buf->event == lcid) ) |
| { |
| p_buf1 = p_buf; |
| p_buf = (BT_HDR *)GKI_getnext (p_buf); |
| num_to_flush--; |
| num_flushed1++; |
| |
| GKI_remove_from_queue (&p_lcb->link_xmit_data_q, p_buf1); |
| GKI_freebuf (p_buf1); |
| } |
| else |
| p_buf = (BT_HDR *)GKI_getnext (p_buf); |
| } |
| } |
| |
| /* If needed, flush buffers in the CCB xmit hold queue */ |
| while ( (num_to_flush != 0) && (p_ccb->xmit_hold_q.count != 0) ) |
| { |
| p_buf = (BT_HDR *)GKI_dequeue (&p_ccb->xmit_hold_q); |
| if (p_buf) |
| GKI_freebuf (p_buf); |
| num_to_flush--; |
| num_flushed2++; |
| } |
| |
| /* If app needs to track all packets, call him */ |
| if ( (p_ccb->p_rcb) && (p_ccb->p_rcb->api.pL2CA_TxComplete_Cb) && (num_flushed2) ) |
| (*p_ccb->p_rcb->api.pL2CA_TxComplete_Cb)(p_ccb->local_cid, num_flushed2); |
| |
| /* Now count how many are left */ |
| p_buf = (BT_HDR *)p_lcb->link_xmit_data_q.p_first; |
| |
| while (p_buf != NULL) |
| { |
| if (p_buf->event == lcid) |
| num_left++; |
| |
| p_buf = (BT_HDR *)GKI_getnext (p_buf); |
| } |
| |
| /* Add in the number in the CCB xmit queue */ |
| num_left += p_ccb->xmit_hold_q.count; |
| |
| /* Return the local number of buffers left for the CID */ |
| L2CAP_TRACE_DEBUG3 ("L2CA_FlushChannel() flushed: %u + %u, num_left: %u", num_flushed1, num_flushed2, num_left); |
| |
| /* If we were congested, and now we are not, tell the app */ |
| l2cu_check_channel_congestion (p_ccb); |
| |
| return (num_left); |
| } |
| |
