15738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project/****************************************************************************** 25738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project * 35738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project * Copyright (C) 2009-2012 Broadcom Corporation 45738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project * 55738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project * Licensed under the Apache License, Version 2.0 (the "License"); 65738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project * you may not use this file except in compliance with the License. 75738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project * You may obtain a copy of the License at: 85738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project * 95738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project * http://www.apache.org/licenses/LICENSE-2.0 105738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project * 115738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project * Unless required by applicable law or agreed to in writing, software 125738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project * distributed under the License is distributed on an "AS IS" BASIS, 135738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 145738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project * See the License for the specific language governing permissions and 155738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project * limitations under the License. 165738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project * 175738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project ******************************************************************************/ 185738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project 195738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project/************************************************************************************ 205738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project * 215738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project * Filename: btif_pan.c 225738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project * 235738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project * Description: PAN Profile Bluetooth Interface 245738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project * 255738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project * 265738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project ***********************************************************************************/ 275738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project#include <hardware/bluetooth.h> 285738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project#include <hardware/bt_pan.h> 294186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati#include <assert.h> 305738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project#include <signal.h> 315738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project#include <ctype.h> 325738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project#include <sys/select.h> 335738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project#include <sys/poll.h> 345738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project#include <sys/ioctl.h> 355738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project#include <netinet/in.h> 365738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project#include <netdb.h> 375738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project#include <stdio.h> 385738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project#include <errno.h> 395738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project#include <fcntl.h> 405738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project#include <sys/socket.h> 415738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project#include <sys/wait.h> 425738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project#include <net/if.h> 435738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project#include <linux/sockios.h> 445738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project#include <sys/prctl.h> 455738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project#include <linux/if.h> 465738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project#include <linux/if_tun.h> 475738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project#include <linux/if_ether.h> 485738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project 495738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project#define LOG_TAG "BTIF_PAN" 505738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project#include "btif_common.h" 515738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project#include "btif_util.h" 525738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project#include "btm_api.h" 535738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project#include "bd.h" 545738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project 555738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project#include "bta_api.h" 565738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project#include "bta_pan_api.h" 575738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project#include "btif_sock_thread.h" 585738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project#include "btif_sock_util.h" 595738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project#include "btif_pan_internal.h" 604186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati#include "gki.h" 615738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project 624186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati#define FORWARD_IGNORE 1 634186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati#define FORWARD_SUCCESS 0 644186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati#define FORWARD_FAILURE (-1) 654186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati#define FORWARD_CONGEST (-2) 665738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project//#define PANU_DISABLED TRUE 675738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project 685738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project#if (PAN_NAP_DISABLED == TRUE) && (PANU_DISABLED == TRUE) 695738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project#define BTPAN_LOCAL_ROLE BTPAN_ROLE_NONE 705738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project#elif PAN_NAP_DISABLED == TRUE 715738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project#define BTPAN_LOCAL_ROLE BTPAN_ROLE_PANU 725738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project#elif PANU_DISABLED == TRUE 735738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project#define BTPAN_LOCAL_ROLE BTPAN_ROLE_PANNAP 745738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project#else 755738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project#define BTPAN_LOCAL_ROLE (BTPAN_ROLE_PANU | BTPAN_ROLE_PANNAP) 765738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project#endif 775738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project 78e8c3d75b75493911ebf0f99c83676359657178f7Sharvil Nanavati#define asrt(s) if(!(s)) BTIF_TRACE_ERROR("btif_pan: ## %s assert %s failed at line:%d ##",__FUNCTION__, #s, __LINE__) 795738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project 804186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati#define MIN(x, y) (((x) < (y)) ? (x) : (y)) 814186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati 825738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Projectbtpan_cb_t btpan_cb; 835738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project 845738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source ProjectBD_ADDR local_addr; 855738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Projectstatic int jni_initialized, stack_initialized; 865738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Projectstatic bt_status_t btpan_jni_init(const btpan_callbacks_t* callbacks); 875738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Projectstatic void btpan_jni_cleanup(); 885738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Projectstatic bt_status_t btpan_connect(const bt_bdaddr_t *bd_addr, int local_role, int remote_role); 895738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Projectstatic bt_status_t btpan_disconnect(const bt_bdaddr_t *bd_addr); 905738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Projectstatic bt_status_t btpan_enable(int local_role); 915738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Projectstatic int btpan_get_local_role(void); 925738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project 935738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Projectstatic void btpan_tap_fd_signaled(int fd, int type, int flags, uint32_t user_id); 945738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Projectstatic void btpan_cleanup_conn(btpan_conn_t* conn); 955738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Projectstatic void bta_pan_callback(tBTA_PAN_EVT event, tBTA_PAN *p_data); 964186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavatistatic void btu_exec_tap_fd_read(void *p_param); 974186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati 985738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Projectstatic btpan_interface_t pan_if = { 995738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project sizeof(pan_if), 1005738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project btpan_jni_init, 1015738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project btpan_enable, 1025738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project btpan_get_local_role, 1035738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project btpan_connect, 1045738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project btpan_disconnect, 1055738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project btpan_jni_cleanup 1065738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project}; 1074186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati 1085738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Projectbtpan_interface_t *btif_pan_get_interface() 1095738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project{ 1105738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project return &pan_if; 1115738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project} 1124186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati 1134186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati/******************************************************************************* 1144186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati ** 1154186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati ** Function btif_pan_init 1164186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati ** 1174186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati ** Description initializes the pan interface 1184186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati ** 1194186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati ** Returns bt_status_t 1204186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati ** 1214186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati *******************************************************************************/ 1225738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Projectvoid btif_pan_init() 1235738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project{ 124e8c3d75b75493911ebf0f99c83676359657178f7Sharvil Nanavati BTIF_TRACE_DEBUG("jni_initialized = %d, btpan_cb.enabled:%d", jni_initialized, btpan_cb.enabled); 1255738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project stack_initialized = TRUE; 1265738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project if (jni_initialized && !btpan_cb.enabled) 1275738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project { 128e8c3d75b75493911ebf0f99c83676359657178f7Sharvil Nanavati BTIF_TRACE_DEBUG("Enabling PAN...."); 1295738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project memset(&btpan_cb, 0, sizeof(btpan_cb)); 1305738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project btpan_cb.tap_fd = -1; 1314186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati btpan_cb.flow = 1; 1325738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project int i; 1335738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project for(i = 0; i < MAX_PAN_CONNS; i++) 1345738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project btpan_cleanup_conn(&btpan_cb.conns[i]); 1355738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project BTA_PanEnable(bta_pan_callback); 1365738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project btpan_cb.enabled = 1; 1375738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project btpan_enable(BTPAN_LOCAL_ROLE); 1385738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project } 1395738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project} 1404186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati 1415738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Projectstatic void pan_disable() 1425738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project{ 1435738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project if(btpan_cb.enabled) 1445738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project { 1455738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project btpan_cb.enabled = 0; 1465738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project BTA_PanDisable(); 1475738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project if(btpan_cb.tap_fd != -1) 1485738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project { 1495738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project btpan_tap_close(btpan_cb.tap_fd); 1505738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project btpan_cb.tap_fd = -1; 1515738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project } 1525738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project } 1535738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project} 1544186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati 1555738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Projectvoid btif_pan_cleanup() 1565738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project{ 1575738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project if(stack_initialized) 1585738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project { 1595738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project //bt is shuting down, invalid all bta pan handles 1605738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project int i; 1615738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project for(i = 0; i < MAX_PAN_CONNS; i++) 1625738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project btpan_cleanup_conn(&btpan_cb.conns[i]); 1635738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project pan_disable(); 1645738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project } 1655738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project stack_initialized = FALSE; 1665738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project} 1675738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project 1685738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Projectstatic btpan_callbacks_t callback; 1695738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Projectstatic bt_status_t btpan_jni_init(const btpan_callbacks_t* callbacks) 1705738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project{ 171e8c3d75b75493911ebf0f99c83676359657178f7Sharvil Nanavati BTIF_TRACE_DEBUG("stack_initialized = %d, btpan_cb.enabled:%d", stack_initialized, btpan_cb.enabled); 1725738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project jni_initialized = TRUE; 1735738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project if(stack_initialized && !btpan_cb.enabled) 1745738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project btif_pan_init(); 1755738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project callback = *callbacks; 1765738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project return BT_STATUS_SUCCESS; 1775738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project} 1785738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project 1795738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Projectstatic void btpan_jni_cleanup() 1805738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project{ 1815738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project pan_disable(); 1825738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project jni_initialized = FALSE; 1835738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project} 1844186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati 1855738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Projectstatic inline int bta_role_to_btpan(int bta_pan_role) 1865738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project{ 1875738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project int btpan_role = 0; 188e8c3d75b75493911ebf0f99c83676359657178f7Sharvil Nanavati BTIF_TRACE_DEBUG("bta_pan_role:0x%x", bta_pan_role); 1895738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project if(bta_pan_role & PAN_ROLE_NAP_SERVER) 1905738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project { 1915738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project btpan_role |= BTPAN_ROLE_PANNAP; 1925738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project } 1935738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project if(bta_pan_role & PAN_ROLE_CLIENT) 1945738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project { 1955738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project btpan_role |= BTPAN_ROLE_PANU; 1965738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project } 1975738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project return btpan_role; 1985738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project} 1994186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati 2005738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Projectstatic inline int btpan_role_to_bta(int btpan_role) 2015738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project{ 2025738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project int bta_pan_role = PAN_ROLE_INACTIVE; 203e8c3d75b75493911ebf0f99c83676359657178f7Sharvil Nanavati BTIF_TRACE_DEBUG("btpan_role:0x%x", btpan_role); 2045738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project if(btpan_role & BTPAN_ROLE_PANNAP) 2055738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project { 2065738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project bta_pan_role |= PAN_ROLE_NAP_SERVER; 2075738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project } 2085738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project if(btpan_role & BTPAN_ROLE_PANU) 2095738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project { 2105738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project bta_pan_role |= PAN_ROLE_CLIENT; 2115738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project } 2125738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project return bta_pan_role; 2135738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project} 2144186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati 2155738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Projectstatic volatile int btpan_dev_local_role; 2165738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Projectstatic tBTA_PAN_ROLE_INFO bta_panu_info = {PANU_SERVICE_NAME, 0, PAN_SECURITY}; 21736f43cc4b0ce38007c29d573f251ec594d95b180Nitin Shivpurestatic tBTA_PAN_ROLE_INFO bta_pan_nap_info = {PAN_NAP_SERVICE_NAME, 1, PAN_SECURITY}; 2185738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project 2195738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Projectstatic bt_status_t btpan_enable(int local_role) 2205738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project{ 2215738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project int bta_pan_role; 222e8c3d75b75493911ebf0f99c83676359657178f7Sharvil Nanavati BTIF_TRACE_DEBUG("local_role:%d", local_role); 2235738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project bta_pan_role = btpan_role_to_bta(local_role); 2243576c564b33c20b5e2e90fdd3bca7ce24392ca50Mike J. Chen#if BTA_PAN_INCLUDED == TRUE 2255738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project BTA_PanSetRole(bta_pan_role, &bta_panu_info, NULL, &bta_pan_nap_info); 2265738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project btpan_dev_local_role = local_role; 2275738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project return BT_STATUS_SUCCESS; 2283576c564b33c20b5e2e90fdd3bca7ce24392ca50Mike J. Chen#else 2293576c564b33c20b5e2e90fdd3bca7ce24392ca50Mike J. Chen return BT_STATUS_FAIL; 2303576c564b33c20b5e2e90fdd3bca7ce24392ca50Mike J. Chen#endif 2315738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project} 2324186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati 2335738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Projectstatic int btpan_get_local_role() 2345738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project{ 235e8c3d75b75493911ebf0f99c83676359657178f7Sharvil Nanavati BTIF_TRACE_DEBUG("btpan_dev_local_role:%d", btpan_dev_local_role); 2365738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project return btpan_dev_local_role; 2375738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project} 2384186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati 2395738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Projectstatic bt_status_t btpan_connect(const bt_bdaddr_t *bd_addr, int local_role, int remote_role) 2405738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project{ 241e8c3d75b75493911ebf0f99c83676359657178f7Sharvil Nanavati BTIF_TRACE_DEBUG("local_role:%d, remote_role:%d", local_role, remote_role); 2425738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project int bta_local_role = btpan_role_to_bta(local_role); 2435738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project int bta_remote_role = btpan_role_to_bta(remote_role); 2445738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project btpan_new_conn(-1, bd_addr->address, bta_local_role, bta_remote_role); 2455738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project BTA_PanOpen((UINT8*)bd_addr->address, bta_local_role, bta_remote_role); 2465738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project return BT_STATUS_SUCCESS; 2475738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project} 2484186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati 2495738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Projectstatic void btif_in_pan_generic_evt(UINT16 event, char *p_param) 2505738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project{ 251e8c3d75b75493911ebf0f99c83676359657178f7Sharvil Nanavati BTIF_TRACE_EVENT("%s: event=%d", __FUNCTION__, event); 2525738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project switch (event) { 2535738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project case BTIF_PAN_CB_DISCONNECTING: 2545738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project { 2555738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project bt_bdaddr_t *bd_addr = (bt_bdaddr_t*)p_param; 2565738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project btpan_conn_t* conn = btpan_find_conn_addr(bd_addr->address); 2575738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project int btpan_conn_local_role; 2585738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project int btpan_remote_role; 2595738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project asrt(conn != NULL); 2605738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project if (conn) { 2615738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project btpan_conn_local_role = bta_role_to_btpan(conn->local_role); 2625738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project btpan_remote_role = bta_role_to_btpan(conn->remote_role); 2635738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project callback.connection_state_cb(BTPAN_STATE_DISCONNECTING, BT_STATUS_SUCCESS, 2645738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project (const bt_bdaddr_t*)conn->peer, btpan_conn_local_role, btpan_remote_role); 2655738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project } 2665738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project } break; 2675738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project default: 2685738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project { 269e8c3d75b75493911ebf0f99c83676359657178f7Sharvil Nanavati BTIF_TRACE_WARNING("%s : Unknown event 0x%x", __FUNCTION__, event); 2705738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project } 2715738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project break; 2725738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project } 2735738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project} 2744186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati 2755738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Projectstatic bt_status_t btpan_disconnect(const bt_bdaddr_t *bd_addr) 2765738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project{ 2775738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project btpan_conn_t* conn = btpan_find_conn_addr(bd_addr->address); 2785738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project if(conn && conn->handle >= 0) 2795738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project { 2805738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project BTA_PanClose(conn->handle); 2815738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project /* Inform the application that the disconnect has been initiated successfully */ 2825738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project btif_transfer_context(btif_in_pan_generic_evt, BTIF_PAN_CB_DISCONNECTING, 2835738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project (char *)bd_addr, sizeof(bt_bdaddr_t), NULL); 2845738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project return BT_STATUS_SUCCESS; 2855738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project } 2865738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project return BT_STATUS_FAIL; 2875738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project} 2884186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati 2894186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavatistatic int pan_pth = -1; 2905738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Projectvoid create_tap_read_thread(int tap_fd) 2915738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project{ 2924186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati if(pan_pth < 0) 2934186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati pan_pth = btsock_thread_create(btpan_tap_fd_signaled, NULL); 2944186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati if(pan_pth >= 0) 2954186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati btsock_thread_add_fd(pan_pth, tap_fd, 0, SOCK_THREAD_FD_RD, 0); 2965738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project} 2974186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati 2985738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Projectvoid destroy_tap_read_thread(void) 2995738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project{ 3004186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati if(pan_pth >= 0) 3015738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project { 3024186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati btsock_thread_exit(pan_pth); 3034186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati pan_pth = -1; 3045738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project } 3055738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project} 3064186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati 3075738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Projectstatic int tap_if_up(const char *devname, BD_ADDR addr) 3085738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project{ 3095738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project struct ifreq ifr; 3105738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project int sk, err; 3115738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project 3125738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project sk = socket(AF_INET, SOCK_DGRAM, 0); 3135738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project 3145738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project //set mac addr 3155738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project memset(&ifr, 0, sizeof(ifr)); 3165738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project strncpy(ifr.ifr_name, devname, IFNAMSIZ - 1); 3175738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project err = ioctl(sk, SIOCGIFHWADDR, &ifr); 3185738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project if(err < 0) 3195738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project { 320e8c3d75b75493911ebf0f99c83676359657178f7Sharvil Nanavati BTIF_TRACE_ERROR("Could not get network hardware for interface:%s, errno:%s", devname, strerror(errno)); 3215738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project close(sk); 3225738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project return -1; 3235738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project } 324689d66b6559dcb3a0ad7f6cc33b6129e50910253The Android Open Source Project /* debug("found mac address for interface:%s = %02x:%02x:%02x:%02x:%02x:%02x", devname, */ 325689d66b6559dcb3a0ad7f6cc33b6129e50910253The Android Open Source Project /* ifr.ifr_hwaddr.sa_data[0], ifr.ifr_hwaddr.sa_data[1], ifr.ifr_hwaddr.sa_data[2], */ 326689d66b6559dcb3a0ad7f6cc33b6129e50910253The Android Open Source Project /* ifr.ifr_hwaddr.sa_data[3], ifr.ifr_hwaddr.sa_data[4], ifr.ifr_hwaddr.sa_data[5]); */ 3275738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project strncpy(ifr.ifr_name, devname, IFNAMSIZ - 1); 3285738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project memcpy(ifr.ifr_hwaddr.sa_data, addr, 6); 329689d66b6559dcb3a0ad7f6cc33b6129e50910253The Android Open Source Project /* debug("setting bt address for interface:%s = %02x:%02x:%02x:%02x:%02x:%02x", devname, */ 330689d66b6559dcb3a0ad7f6cc33b6129e50910253The Android Open Source Project /* ifr.ifr_hwaddr.sa_data[0], ifr.ifr_hwaddr.sa_data[1], ifr.ifr_hwaddr.sa_data[2], */ 331689d66b6559dcb3a0ad7f6cc33b6129e50910253The Android Open Source Project /* ifr.ifr_hwaddr.sa_data[3], ifr.ifr_hwaddr.sa_data[4], ifr.ifr_hwaddr.sa_data[5]); */ 3325738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project 33301364c729dd8f94be9959300188c94324960e0dfLoic Poulain /* The IEEE has specified that the most significant bit of the most significant byte is used to 33401364c729dd8f94be9959300188c94324960e0dfLoic Poulain * determine a multicast address. If its a 1, that means multicast, 0 means unicast. 33501364c729dd8f94be9959300188c94324960e0dfLoic Poulain * Kernel returns an error if we try to set a multicast address for the tun-tap ethernet interface. 33601364c729dd8f94be9959300188c94324960e0dfLoic Poulain * Mask this bit to avoid any issue with auto generated address. 33701364c729dd8f94be9959300188c94324960e0dfLoic Poulain */ 33801364c729dd8f94be9959300188c94324960e0dfLoic Poulain if (ifr.ifr_hwaddr.sa_data[0] & 0x01) { 339afa6e1abbedaad8fe854b0f43999b8aeb801af91Matthew Xie BTIF_TRACE_WARNING("Not a unicast MAC address, force multicast bit flipping"); 34001364c729dd8f94be9959300188c94324960e0dfLoic Poulain ifr.ifr_hwaddr.sa_data[0] &= ~0x01; 34101364c729dd8f94be9959300188c94324960e0dfLoic Poulain } 34201364c729dd8f94be9959300188c94324960e0dfLoic Poulain 3435738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project err = ioctl(sk, SIOCSIFHWADDR, (caddr_t)&ifr); 3445738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project 3455738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project if (err < 0) { 346e8c3d75b75493911ebf0f99c83676359657178f7Sharvil Nanavati BTIF_TRACE_ERROR("Could not set bt address for interface:%s, errno:%s", devname, strerror(errno)); 3475738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project close(sk); 3485738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project return -1; 3495738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project } 3505738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project 3515738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project //bring it up 3525738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project memset(&ifr, 0, sizeof(ifr)); 3535738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project strncpy(ifr.ifr_name, devname, IF_NAMESIZE - 1); 3545738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project 3555738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project ifr.ifr_flags |= IFF_UP; 3565738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project ifr.ifr_flags |= IFF_MULTICAST; 3575738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project 3585738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project err = ioctl(sk, SIOCSIFFLAGS, (caddr_t) &ifr); 3595738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project 3605738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project 3615738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project if (err < 0) { 362e8c3d75b75493911ebf0f99c83676359657178f7Sharvil Nanavati BTIF_TRACE_ERROR("Could not bring up network interface:%s, errno:%d", devname, errno); 3635738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project close(sk); 3645738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project return -1; 3655738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project } 3665738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project close(sk); 367e8c3d75b75493911ebf0f99c83676359657178f7Sharvil Nanavati BTIF_TRACE_DEBUG("network interface: %s is up", devname); 3685738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project return 0; 3695738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project} 3705738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project 3715738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Projectstatic int tap_if_down(const char *devname) 3725738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project{ 3735738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project struct ifreq ifr; 3745738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project int sk, err; 3755738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project 3765738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project sk = socket(AF_INET, SOCK_DGRAM, 0); 3775738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project 3785738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project memset(&ifr, 0, sizeof(ifr)); 3795738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project strncpy(ifr.ifr_name, devname, IF_NAMESIZE - 1); 3805738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project 3815738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project ifr.ifr_flags &= ~IFF_UP; 3825738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project 3835738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project err = ioctl(sk, SIOCSIFFLAGS, (caddr_t) &ifr); 3845738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project 3855738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project close(sk); 3865738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project 3875738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project return 0; 3885738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project} 3894186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati 3904186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavativoid btpan_set_flow_control(BOOLEAN enable) { 3914186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati if (btpan_cb.tap_fd == -1) 3924186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati return; 3934186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati 3944186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati btpan_cb.flow = enable; 3954186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati if (enable) { 3964186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati btsock_thread_add_fd(pan_pth, btpan_cb.tap_fd, 0, SOCK_THREAD_FD_RD, 0); 3974186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati bta_dmexecutecallback(btu_exec_tap_fd_read, (void *)btpan_cb.tap_fd); 3984186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati } 3994186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati} 4004186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati 4015738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Projectint btpan_tap_open() 4025738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project{ 4035738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project struct ifreq ifr; 4045738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project int fd, err; 4055738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project const char *clonedev = "/dev/tun"; 4065738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project 4075738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project /* open the clone device */ 4085738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project 4095738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project //system("insmod /system/lib/modules/tun.ko"); 4105738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project if( (fd = open(clonedev, O_RDWR)) < 0 ) { 4115738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project 412e8c3d75b75493911ebf0f99c83676359657178f7Sharvil Nanavati BTIF_TRACE_DEBUG("could not open %s, err:%d", clonedev, errno); 4135738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project return fd; 4145738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project } 4155738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project 4165738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project memset(&ifr, 0, sizeof(ifr)); 4175738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project ifr.ifr_flags = IFF_TAP | IFF_NO_PI; 4185738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project 4195738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project strncpy(ifr.ifr_name, TAP_IF_NAME, IFNAMSIZ); 4205738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project 4215738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project /* try to create the device */ 4225738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project if( (err = ioctl(fd, TUNSETIFF, (void *) &ifr)) < 0 )//|| tap_setup_ip(TAP_IF_NAME) == FALSE) 4235738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project { 424e8c3d75b75493911ebf0f99c83676359657178f7Sharvil Nanavati BTIF_TRACE_DEBUG("ioctl error:%d, errno:%s", err, strerror(errno)); 4255738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project close(fd); 4265738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project return err; 4275738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project } 4285738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project BTM_GetLocalDeviceAddr (local_addr); 4295738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project if(tap_if_up(TAP_IF_NAME, local_addr) == 0) 4305738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project { 43195ca3c43eae763465bbd7bddc927279f17b16106Zhenye Zhu int flags = fcntl(fd, F_GETFL, 0); 43295ca3c43eae763465bbd7bddc927279f17b16106Zhenye Zhu fcntl(fd, F_SETFL, flags | O_NONBLOCK); 4335738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project return fd; 4345738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project } 435e8c3d75b75493911ebf0f99c83676359657178f7Sharvil Nanavati BTIF_TRACE_ERROR("can not bring up tap interface:%s", TAP_IF_NAME); 4365738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project close(fd); 4375738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project return -1; 4385738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project} 4394186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati 4405738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Projectint btpan_tap_send(int tap_fd, const BD_ADDR src, const BD_ADDR dst, UINT16 proto, const char* buf, 4415738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project UINT16 len, BOOLEAN ext, BOOLEAN forward) 4425738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project{ 4435cd8bff2dd0337cb52bf48f312e3d2d55a8882fbMike J. Chen UNUSED(ext); 4445cd8bff2dd0337cb52bf48f312e3d2d55a8882fbMike J. Chen UNUSED(forward); 4455738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project if(tap_fd != -1) 4465738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project { 4475738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project tETH_HDR eth_hdr; 4485738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project //if(is_empty_eth_addr(dst)) 4495738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project // memcpy(ð_hdr.h_dest, local_addr, ETH_ADDR_LEN); 4505738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project //else 4515738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project memcpy(ð_hdr.h_dest, dst, ETH_ADDR_LEN); 4525738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project memcpy(ð_hdr.h_src, src, ETH_ADDR_LEN); 4535738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project eth_hdr.h_proto = htons(proto); 4545738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project char packet[2000]; 4555738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project memcpy(packet, ð_hdr, sizeof(tETH_HDR)); 4565738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project if(len > 2000) 4575738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project { 4585738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project ALOGE("btpan_tap_send eth packet size:%d is exceeded limit!", len); 4595738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project return -1; 4605738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project } 4615738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project memcpy(packet + sizeof(tETH_HDR), buf, len); 4625738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project 4635738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project /* Send data to network interface */ 4645738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project //btnet_send(btpan_cb.conn[i].sock.sock, &buffer, (len + sizeof(tETH_HDR))); 4655738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project //dump_bin("packet to network", packet, len + sizeof(tETH_HDR)); 4665738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project int ret = write(tap_fd, packet, len + sizeof(tETH_HDR)); 467e8c3d75b75493911ebf0f99c83676359657178f7Sharvil Nanavati BTIF_TRACE_DEBUG("ret:%d", ret); 4685738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project return ret; 4695738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project } 4705738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project return -1; 4715738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project 4725738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project} 4734186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati 4745738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Projectint btpan_tap_close(int fd) 4755738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project{ 4765738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project tap_if_down(TAP_IF_NAME); 4775738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project close(fd); 4784186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati if(pan_pth >= 0) 4794186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati btsock_thread_wakeup(pan_pth); 4805738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project return 0; 4815738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project} 4824186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati 4835738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Projectbtpan_conn_t * btpan_find_conn_handle(UINT16 handle) 4845738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project{ 4855738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project int i; 4865738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project for(i = 0; i < MAX_PAN_CONNS; i++) 4875738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project if(btpan_cb.conns[i].handle == handle) 4885738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project return &btpan_cb.conns[i]; 4895738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project return NULL; 4905738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project} 4914186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati 4925738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Projectbtpan_conn_t* btpan_find_conn_addr(const BD_ADDR addr) 4935738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project{ 4945738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project int i; 4955738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project for(i = 0; i < MAX_PAN_CONNS; i++) 4965738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project if(memcmp(btpan_cb.conns[i].peer, addr, sizeof(BD_ADDR)) == 0) 4975738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project return &btpan_cb.conns[i]; 4985738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project return NULL; 4995738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project} 5004186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati 5015738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Projectstatic void btpan_cleanup_conn(btpan_conn_t* conn) 5025738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project{ 5035738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project if(conn) 5045738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project { 5055738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project conn->handle = -1; 5065738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project conn->state = -1; 5075738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project memset(&conn->peer, 0, sizeof(conn->peer)); 5085738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project memset(&conn->eth_addr, 0, sizeof(conn->eth_addr)); 5095738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project conn->local_role = conn->remote_role = 0; 5105738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project } 5115738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project} 5124186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati 5135738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Projectbtpan_conn_t* btpan_new_conn(int handle, const BD_ADDR addr, int local_role, int remote_role ) 5145738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project{ 5155738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project int i; 5165738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project for(i = 0; i < MAX_PAN_CONNS; i++) 5175738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project { 518e8c3d75b75493911ebf0f99c83676359657178f7Sharvil Nanavati BTIF_TRACE_DEBUG("conns[%d]:%d", i, btpan_cb.conns[i].handle); 5195738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project if(btpan_cb.conns[i].handle == -1) 5205738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project { 521e8c3d75b75493911ebf0f99c83676359657178f7Sharvil Nanavati BTIF_TRACE_DEBUG("handle:%d, local_role:%d, remote_role:%d", handle, local_role, remote_role); 5225738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project 5235738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project btpan_cb.conns[i].handle = handle; 5245738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project bdcpy(btpan_cb.conns[i].peer, addr); 5255738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project btpan_cb.conns[i].local_role = local_role; 5265738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project btpan_cb.conns[i].remote_role = remote_role; 5275738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project return &btpan_cb.conns[i]; 5285738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project } 5295738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project } 530e8c3d75b75493911ebf0f99c83676359657178f7Sharvil Nanavati BTIF_TRACE_DEBUG("MAX_PAN_CONNS:%d exceeded, return NULL as failed", MAX_PAN_CONNS); 5315738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project return NULL; 5325738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project} 5335738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project 5345738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Projectvoid btpan_close_handle(btpan_conn_t *p) 5355738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project{ 536e8c3d75b75493911ebf0f99c83676359657178f7Sharvil Nanavati BTIF_TRACE_DEBUG("btpan_close_handle : close handle %d", p->handle); 5375738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project p->handle = -1; 5385738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project p->local_role = -1; 5395738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project p->remote_role = -1; 5405738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project memset(&p->peer, 0, 6); 5415738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project} 5424186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati 543da271ee4a0afcf5516208dc8df18a4da41a47124Sharvil Nanavatistatic inline bool should_forward(tETH_HDR* hdr) 5445738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project{ 545da271ee4a0afcf5516208dc8df18a4da41a47124Sharvil Nanavati uint16_t proto = ntohs(hdr->h_proto); 546da271ee4a0afcf5516208dc8df18a4da41a47124Sharvil Nanavati if(proto == ETH_P_IP || proto == ETH_P_ARP || proto == ETH_P_IPV6) 547da271ee4a0afcf5516208dc8df18a4da41a47124Sharvil Nanavati return true; 548e8c3d75b75493911ebf0f99c83676359657178f7Sharvil Nanavati BTIF_TRACE_DEBUG("unknown proto:%x", proto); 549da271ee4a0afcf5516208dc8df18a4da41a47124Sharvil Nanavati return false; 5505738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project} 5514186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati 5524186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavatistatic int forward_bnep(tETH_HDR* eth_hdr, BT_HDR *hdr) { 5535738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project int broadcast = eth_hdr->h_dest[0] & 1; 5545738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project int i; 5554186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati 5564186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati // Find the right connection to send this frame over. 5574186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati for (i = 0; i < MAX_PAN_CONNS; i++) { 5585738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project UINT16 handle = btpan_cb.conns[i].handle; 5594186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati if (handle != (UINT16)-1 && 5605738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project (broadcast || memcmp(btpan_cb.conns[i].eth_addr, eth_hdr->h_dest, sizeof(BD_ADDR)) == 0 5614186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati || memcmp(btpan_cb.conns[i].peer, eth_hdr->h_dest, sizeof(BD_ADDR)) == 0)) { 5624186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati int result = PAN_WriteBuf(handle, eth_hdr->h_dest, eth_hdr->h_src, ntohs(eth_hdr->h_proto), hdr, 0); 5634186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati switch (result) { 5644186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati case PAN_Q_SIZE_EXCEEDED: 5654186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati return FORWARD_CONGEST; 5664186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati case PAN_SUCCESS: 5674186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati return FORWARD_SUCCESS; 5684186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati default: 5694186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati return FORWARD_FAILURE; 5704186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati } 5715738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project } 5725738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project } 5734186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati GKI_freebuf(hdr); 5744186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati return FORWARD_IGNORE; 5755738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project} 5765738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project 5775738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Projectstatic void bta_pan_callback_transfer(UINT16 event, char *p_param) 5785738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project{ 5795738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project tBTA_PAN *p_data = (tBTA_PAN *)p_param; 5805738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project switch(event) 5815738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project { 5825738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project case BTA_PAN_ENABLE_EVT: 583e8c3d75b75493911ebf0f99c83676359657178f7Sharvil Nanavati BTIF_TRACE_DEBUG("BTA_PAN_ENABLE_EVT"); 5845738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project break; 5855738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project case BTA_PAN_SET_ROLE_EVT: 5865738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project { 5875738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project int btpan_role = bta_role_to_btpan(p_data->set_role.role); 5885738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project bt_status_t status = p_data->set_role.status == BTA_PAN_SUCCESS ? BT_STATUS_SUCCESS : BT_STATUS_FAIL; 5895738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project btpan_control_state_t state = btpan_role == 0 ? BTPAN_STATE_DISABLED : BTPAN_STATE_ENABLED; 5905738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project callback.control_state_cb(state, btpan_role, status, TAP_IF_NAME); 5915738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project break; 5925738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project } 5935738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project case BTA_PAN_OPENING_EVT: 5945738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project { 5955738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project btpan_conn_t* conn; 5965738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project bdstr_t bds; 5975738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project bd2str((bt_bdaddr_t*)p_data->opening.bd_addr, &bds); 598e8c3d75b75493911ebf0f99c83676359657178f7Sharvil Nanavati BTIF_TRACE_DEBUG("BTA_PAN_OPENING_EVT handle %d, addr: %s", p_data->opening.handle, bds); 5995738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project conn = btpan_find_conn_addr(p_data->opening.bd_addr); 6005738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project 6015738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project asrt(conn != NULL); 6025738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project if (conn) 6035738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project { 6045738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project conn->handle = p_data->opening.handle; 6055738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project int btpan_conn_local_role = bta_role_to_btpan(conn->local_role); 6065738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project int btpan_remote_role = bta_role_to_btpan(conn->remote_role); 6075738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project callback.connection_state_cb(BTPAN_STATE_CONNECTING, BT_STATUS_SUCCESS, 6085738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project (const bt_bdaddr_t*)p_data->opening.bd_addr, btpan_conn_local_role, btpan_remote_role); 6095738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project } 6105738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project else 611e8c3d75b75493911ebf0f99c83676359657178f7Sharvil Nanavati BTIF_TRACE_ERROR("connection not found"); 6125738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project break; 6135738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project } 6145738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project case BTA_PAN_OPEN_EVT: 6155738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project { 616689d66b6559dcb3a0ad7f6cc33b6129e50910253The Android Open Source Project /* debug("BTA_PAN_OPEN_EVT, open status:%d, bd_addr = [%02X:%02X:%02X:%02X:%02X:%02X]", */ 617689d66b6559dcb3a0ad7f6cc33b6129e50910253The Android Open Source Project /* p_data->open.status, */ 618689d66b6559dcb3a0ad7f6cc33b6129e50910253The Android Open Source Project /* p_data->open.bd_addr[0], p_data->open.bd_addr[1], p_data->open.bd_addr[2], */ 619689d66b6559dcb3a0ad7f6cc33b6129e50910253The Android Open Source Project /* p_data->open.bd_addr[3], p_data->open.bd_addr[4], p_data->open.bd_addr[5]); */ 6205738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project btpan_connection_state_t state; 6215738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project bt_status_t status; 622e85eb5a7c3ea7eaca09cbb33920435d809b4dd3dNitin Shivpure btpan_conn_t *conn = btpan_find_conn_handle(p_data->open.handle); 623e85eb5a7c3ea7eaca09cbb33920435d809b4dd3dNitin Shivpure 624e85eb5a7c3ea7eaca09cbb33920435d809b4dd3dNitin Shivpure ALOGV("%s pan connection open status: %d", __func__, p_data->open.status); 6255738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project if(p_data->open.status == BTA_PAN_SUCCESS) 6265738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project { 6275738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project state = BTPAN_STATE_CONNECTED; 6285738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project status = BT_STATUS_SUCCESS; 6295738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project } 6305738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project else 6315738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project { 6325738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project state = BTPAN_STATE_DISCONNECTED; 6335738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project status = BT_STATUS_FAIL; 634e85eb5a7c3ea7eaca09cbb33920435d809b4dd3dNitin Shivpure btpan_cleanup_conn(conn); 6355738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project } 636689d66b6559dcb3a0ad7f6cc33b6129e50910253The Android Open Source Project /* debug("BTA_PAN_OPEN_EVT handle:%d, conn:%p", p_data->open.handle, conn); */ 637689d66b6559dcb3a0ad7f6cc33b6129e50910253The Android Open Source Project /* debug("conn bta local_role:%d, bta remote role:%d", conn->local_role, conn->remote_role); */ 6385738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project int btpan_conn_local_role = bta_role_to_btpan(p_data->open.local_role); 639689d66b6559dcb3a0ad7f6cc33b6129e50910253The Android Open Source Project /* debug("bta local_role:%d, bta remote role:%d", p_data->open.local_role, p_data->open.peer_role); */ 6405738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project int btpan_remote_role = bta_role_to_btpan(p_data->open.peer_role); 6415738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project callback.connection_state_cb(state, status, (const bt_bdaddr_t*)p_data->open.bd_addr, 6425738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project btpan_conn_local_role, btpan_remote_role); 6435738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project break; 6445738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project } 6455738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project case BTA_PAN_CLOSE_EVT: 6465738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project { 6475738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project btpan_conn_t* conn = btpan_find_conn_handle(p_data->close.handle); 6485738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project 6495738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project ALOGI("%s: event = BTA_PAN_CLOSE_EVT handle %d", __FUNCTION__, p_data->close.handle); 6505738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project 6515738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project if(conn && conn->handle >= 0) 6525738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project { 653689d66b6559dcb3a0ad7f6cc33b6129e50910253The Android Open Source Project /* debug("BTA_PAN_CLOSE_EVT, conn local_role:%d, remote_role:%d", conn->local_role, conn->remote_role); */ 6545738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project int btpan_conn_local_role = bta_role_to_btpan(conn->local_role); 6555738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project int btpan_remote_role = bta_role_to_btpan(conn->remote_role); 6565738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project callback.connection_state_cb(BTPAN_STATE_DISCONNECTED, 0, (const bt_bdaddr_t*)conn->peer, 6575738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project btpan_conn_local_role, btpan_remote_role); 6585738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project btpan_cleanup_conn(conn); 6595738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project } 6605738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project else 661e8c3d75b75493911ebf0f99c83676359657178f7Sharvil Nanavati BTIF_TRACE_ERROR("pan handle not found (%d)", p_data->close.handle); 6625738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project break; 6635738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project } 6645738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project default: 665e8c3d75b75493911ebf0f99c83676359657178f7Sharvil Nanavati BTIF_TRACE_WARNING("Unknown pan event %d", event); 6665738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project break; 6675738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project } 6685738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project} 6695738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project 6705738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Projectstatic void bta_pan_callback(tBTA_PAN_EVT event, tBTA_PAN *p_data) 6715738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project{ 6725738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project btif_transfer_context(bta_pan_callback_transfer, event, (char*)p_data, sizeof(tBTA_PAN), NULL); 6735738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project} 6745cd8bff2dd0337cb52bf48f312e3d2d55a8882fbMike J. Chen 6754186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati#define IS_EXCEPTION(e) ((e) & (POLLHUP | POLLRDHUP | POLLERR | POLLNVAL)) 6764186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavatistatic void btu_exec_tap_fd_read(void *p_param) { 6774186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati struct pollfd ufd; 6784186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati int fd = (int)p_param; 6794186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati 6804186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati if (fd == -1 || fd != btpan_cb.tap_fd) 6814186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati return; 6824186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati 68395ca3c43eae763465bbd7bddc927279f17b16106Zhenye Zhu // Don't occupy BTU context too long, avoid GKI buffer overruns and 68495ca3c43eae763465bbd7bddc927279f17b16106Zhenye Zhu // give other profiles a chance to run by limiting the amount of memory 68595ca3c43eae763465bbd7bddc927279f17b16106Zhenye Zhu // PAN can use from the shared pool buffer. 68695ca3c43eae763465bbd7bddc927279f17b16106Zhenye Zhu for(int i = 0; i < PAN_POOL_MAX && btif_is_enabled() && btpan_cb.flow; i++) { 6874186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati BT_HDR *buffer = (BT_HDR *)GKI_getpoolbuf(PAN_POOL_ID); 6884186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati if (!buffer) { 689e8c3d75b75493911ebf0f99c83676359657178f7Sharvil Nanavati BTIF_TRACE_WARNING("%s unable to allocate buffer for packet.", __func__); 6904186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati break; 6914186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati } 6924186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati buffer->offset = PAN_MINIMUM_OFFSET; 6934186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati buffer->len = GKI_get_buf_size(buffer) - sizeof(BT_HDR) - buffer->offset; 6944186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati 6954186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati UINT8 *packet = (UINT8 *)buffer + sizeof(BT_HDR) + buffer->offset; 6964186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati 6974186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati // If we don't have an undelivered packet left over, pull one from the TAP driver. 6984186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati // We save it in the congest_packet right away in case we can't deliver it in this 6994186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati // attempt. 7004186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati if (!btpan_cb.congest_packet_size) { 7014186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati ssize_t ret = read(fd, btpan_cb.congest_packet, sizeof(btpan_cb.congest_packet)); 7024186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati switch (ret) { 7034186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati case -1: 704e8c3d75b75493911ebf0f99c83676359657178f7Sharvil Nanavati BTIF_TRACE_ERROR("%s unable to read from driver: %s", __func__, strerror(errno)); 7054186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati GKI_freebuf(buffer); 706285f7c6527244c749aafdc1edec39787e12bd871Zhenye Zhu //add fd back to monitor thread to try it again later 707285f7c6527244c749aafdc1edec39787e12bd871Zhenye Zhu btsock_thread_add_fd(pan_pth, fd, 0, SOCK_THREAD_FD_RD, 0); 7084186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati return; 7094186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati case 0: 710e8c3d75b75493911ebf0f99c83676359657178f7Sharvil Nanavati BTIF_TRACE_WARNING("%s end of file reached.", __func__); 7114186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati GKI_freebuf(buffer); 712285f7c6527244c749aafdc1edec39787e12bd871Zhenye Zhu //add fd back to monitor thread to process the exception 713285f7c6527244c749aafdc1edec39787e12bd871Zhenye Zhu btsock_thread_add_fd(pan_pth, fd, 0, SOCK_THREAD_FD_RD, 0); 7144186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati return; 7154186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati default: 7164186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati btpan_cb.congest_packet_size = ret; 7174186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati break; 7184186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati } 7194186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati } 7204186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati 7214186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati memcpy(packet, btpan_cb.congest_packet, MIN(btpan_cb.congest_packet_size, buffer->len)); 7224186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati buffer->len = MIN(btpan_cb.congest_packet_size, buffer->len); 7234186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati 7244186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati if (buffer->len > sizeof(tETH_HDR) && should_forward((tETH_HDR *)packet)) { 7254186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati // Extract the ethernet header from the buffer since the PAN_WriteBuf inside 7264186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati // forward_bnep can't handle two pointers that point inside the same GKI buffer. 7274186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati tETH_HDR hdr; 7284186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati memcpy(&hdr, packet, sizeof(tETH_HDR)); 7294186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati 7304186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati // Skip the ethernet header. 7314186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati buffer->len -= sizeof(tETH_HDR); 7324186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati buffer->offset += sizeof(tETH_HDR); 7334186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati if (forward_bnep(&hdr, buffer) != FORWARD_CONGEST) 7344186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati btpan_cb.congest_packet_size = 0; 7354186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati } else { 736e8c3d75b75493911ebf0f99c83676359657178f7Sharvil Nanavati BTIF_TRACE_WARNING("%s dropping packet of length %d", __func__, buffer->len); 7374186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati btpan_cb.congest_packet_size = 0; 7384186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati GKI_freebuf(buffer); 7394186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati } 7404186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati 7414186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati // Bail out of the loop if reading from the TAP fd would block. 7424186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati ufd.fd = fd; 7434186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati ufd.events = POLLIN; 7444186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati ufd.revents = 0; 745285f7c6527244c749aafdc1edec39787e12bd871Zhenye Zhu if(poll(&ufd, 1, 0) <= 0 || IS_EXCEPTION(ufd.revents)) 746285f7c6527244c749aafdc1edec39787e12bd871Zhenye Zhu break; 7475738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project } 748285f7c6527244c749aafdc1edec39787e12bd871Zhenye Zhu //add fd back to monitor thread 749285f7c6527244c749aafdc1edec39787e12bd871Zhenye Zhu btsock_thread_add_fd(pan_pth, fd, 0, SOCK_THREAD_FD_RD, 0); 7505738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project} 7515738f83aeb59361a0a2eda2460113f6dc919427The Android Open Source Project 7524186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavatistatic void btif_pan_close_all_conns() { 7534186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati int i; 7544186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati if (!stack_initialized) 7554186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati return; 7564186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati 7574186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati for (i = 0; i < MAX_PAN_CONNS; ++i) 7584186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati if (btpan_cb.conns[i].handle != -1) 7594186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati BTA_PanClose(btpan_cb.conns[i].handle); 7604186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati} 7614186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati 7624186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavatistatic void btpan_tap_fd_signaled(int fd, int type, int flags, uint32_t user_id) { 7634186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati assert(btpan_cb.tap_fd == fd); 7644186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati 7654186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati if (btpan_cb.tap_fd != fd) 7664186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati return; 7674186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati 7684186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati if(flags & SOCK_THREAD_FD_EXCEPTION) { 7694186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati btpan_cb.tap_fd = -1; 7704186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati btpan_tap_close(fd); 7714186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati btif_pan_close_all_conns(); 7724186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati } else if(flags & SOCK_THREAD_FD_RD) 7734186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati bta_dmexecutecallback(btu_exec_tap_fd_read, (void *)fd); 7744186b0ec7e0b7efe17c3b7cb8546ff359e099408Sharvil Nanavati} 775