diff options
Diffstat (limited to 'btif/src/btif_pan.c')
| -rw-r--r-- | btif/src/btif_pan.c | 668 |
1 files changed, 668 insertions, 0 deletions
diff --git a/btif/src/btif_pan.c b/btif/src/btif_pan.c new file mode 100644 index 0000000..2f6c932 --- /dev/null +++ b/btif/src/btif_pan.c @@ -0,0 +1,668 @@ +/****************************************************************************** + * + * Copyright (C) 2009-2012 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. + * + ******************************************************************************/ + +/************************************************************************************ + * + * Filename: btif_pan.c + * + * Description: PAN Profile Bluetooth Interface + * + * + ***********************************************************************************/ +#include <hardware/bluetooth.h> +#include <hardware/bt_pan.h> +#include <signal.h> +#include <ctype.h> +#include <sys/select.h> +#include <sys/poll.h> +#include <sys/ioctl.h> +#include <netinet/in.h> +#include <netdb.h> +#include <stdio.h> +#include <errno.h> +#include <fcntl.h> +#include <sys/socket.h> +#include <sys/wait.h> +#include <net/if.h> +#include <linux/sockios.h> +#include <sys/prctl.h> +#include <linux/if.h> +#include <linux/if_tun.h> +#include <linux/if_ether.h> + +#define LOG_TAG "BTIF_PAN" +#include "btif_common.h" +#include "btif_util.h" +#include "btm_api.h" +#include "bd.h" + +#include "bta_api.h" +#include "bta_pan_api.h" +#include "btif_sock_thread.h" +#include "btif_sock_util.h" +#include "btif_pan_internal.h" + +//#define PANU_DISABLED TRUE + +#if (PAN_NAP_DISABLED == TRUE) && (PANU_DISABLED == TRUE) +#define BTPAN_LOCAL_ROLE BTPAN_ROLE_NONE +#elif PAN_NAP_DISABLED == TRUE +#define BTPAN_LOCAL_ROLE BTPAN_ROLE_PANU +#elif PANU_DISABLED == TRUE +#define BTPAN_LOCAL_ROLE BTPAN_ROLE_PANNAP +#else +#define BTPAN_LOCAL_ROLE (BTPAN_ROLE_PANU | BTPAN_ROLE_PANNAP) +#endif + + + +#include <cutils/log.h> +#define info(fmt, ...) ALOGI ("btif_pan: %s(L%d): " fmt,__FUNCTION__, __LINE__, ## __VA_ARGS__) +#define debug(fmt, ...) ALOGD ("btif_pan: %s(L%d): " fmt,__FUNCTION__, __LINE__, ## __VA_ARGS__) +#define warn(fmt, ...) ALOGW ("btif_pan: ## WARNING : %s(L%d): " fmt "##",__FUNCTION__, __LINE__, ## __VA_ARGS__) +#define error(fmt, ...) ALOGE ("btif_pan: ## ERROR : %s(L%d): " fmt "##",__FUNCTION__, __LINE__, ## __VA_ARGS__) +#define asrt(s) if(!(s)) ALOGE ("btif_pan: ## %s assert %s failed at line:%d ##",__FUNCTION__, #s, __LINE__) + + + +btpan_cb_t btpan_cb; + +BD_ADDR local_addr; +static int jni_initialized, stack_initialized; +static bt_status_t btpan_jni_init(const btpan_callbacks_t* callbacks); +static void btpan_jni_cleanup(); +static bt_status_t btpan_connect(const bt_bdaddr_t *bd_addr, int local_role, int remote_role); +static bt_status_t btpan_disconnect(const bt_bdaddr_t *bd_addr); +static bt_status_t btpan_enable(int local_role); +static int btpan_get_local_role(void); + +static void btpan_tap_fd_signaled(int fd, int type, int flags, uint32_t user_id); +static void btpan_cleanup_conn(btpan_conn_t* conn); +static void bta_pan_callback(tBTA_PAN_EVT event, tBTA_PAN *p_data); +/******************************************************************************* + ** + ** Function btpan_ini + ** + ** Description initializes the pan interface + ** + ** Returns bt_status_t + ** + *******************************************************************************/ +static btpan_interface_t pan_if = { + sizeof(pan_if), + btpan_jni_init, + btpan_enable, + btpan_get_local_role, + btpan_connect, + btpan_disconnect, + btpan_jni_cleanup +}; +btpan_interface_t *btif_pan_get_interface() +{ + return &pan_if; +} +void btif_pan_init() +{ + debug("jni_initialized = %d, btpan_cb.enabled:%d", jni_initialized, btpan_cb.enabled); + stack_initialized = TRUE; + if (jni_initialized && !btpan_cb.enabled) + { + debug("Enabling PAN...."); + memset(&btpan_cb, 0, sizeof(btpan_cb)); + btpan_cb.tap_fd = -1; + int i; + for(i = 0; i < MAX_PAN_CONNS; i++) + btpan_cleanup_conn(&btpan_cb.conns[i]); + BTA_PanEnable(bta_pan_callback); + btpan_cb.enabled = 1; + btpan_enable(BTPAN_LOCAL_ROLE); + } + debug("leaving"); +} +static void pan_disable() +{ + if(btpan_cb.enabled) + { + btpan_cb.enabled = 0; + BTA_PanDisable(); + if(btpan_cb.tap_fd != -1) + { + destroy_tap_read_thread(); + btpan_tap_close(btpan_cb.tap_fd); + btpan_cb.tap_fd = -1; + } + } +} +void btif_pan_cleanup() +{ + if(stack_initialized) + { + //bt is shuting down, invalid all bta pan handles + int i; + for(i = 0; i < MAX_PAN_CONNS; i++) + btpan_cleanup_conn(&btpan_cb.conns[i]); + pan_disable(); + debug("leaving"); + } + stack_initialized = FALSE; +} + +static btpan_callbacks_t callback; +static bt_status_t btpan_jni_init(const btpan_callbacks_t* callbacks) +{ + debug("stack_initialized = %d, btpan_cb.enabled:%d", stack_initialized, btpan_cb.enabled); + jni_initialized = TRUE; + if(stack_initialized && !btpan_cb.enabled) + btif_pan_init(); + callback = *callbacks; + debug(" leaving"); + return BT_STATUS_SUCCESS; +} + +static void btpan_jni_cleanup() +{ + pan_disable(); + jni_initialized = FALSE; + debug("leaving"); +} +static inline int bta_role_to_btpan(int bta_pan_role) +{ + int btpan_role = 0; + debug("bta_pan_role:0x%x", bta_pan_role); + if(bta_pan_role & PAN_ROLE_NAP_SERVER) + { + debug("BTPAN_ROLE_PANNAP"); + btpan_role |= BTPAN_ROLE_PANNAP; + } + if(bta_pan_role & PAN_ROLE_CLIENT) + { + debug("BTPAN_ROLE_PANU"); + btpan_role |= BTPAN_ROLE_PANU; + } + return btpan_role; +} +static inline int btpan_role_to_bta(int btpan_role) +{ + int bta_pan_role = PAN_ROLE_INACTIVE; + debug("btpan_role:0x%x", btpan_role); + if(btpan_role & BTPAN_ROLE_PANNAP) + { + debug("BTPAN_ROLE_PANNAP"); + bta_pan_role |= PAN_ROLE_NAP_SERVER; + } + if(btpan_role & BTPAN_ROLE_PANU) + { + debug("BTPAN_ROLE_CLIENT"); + bta_pan_role |= PAN_ROLE_CLIENT; + } + return bta_pan_role; +} +static volatile int btpan_dev_local_role; +static tBTA_PAN_ROLE_INFO bta_panu_info = {PANU_SERVICE_NAME, 0, PAN_SECURITY}; +static tBTA_PAN_ROLE_INFO bta_pan_nap_info = {PAN_NAP_SERVICE_NAME, 0, PAN_SECURITY}; + +static bt_status_t btpan_enable(int local_role) +{ + int bta_pan_role; + debug("local_role:%d", local_role); + bta_pan_role = btpan_role_to_bta(local_role); + BTA_PanSetRole(bta_pan_role, &bta_panu_info, NULL, &bta_pan_nap_info); + btpan_dev_local_role = local_role; + return BT_STATUS_SUCCESS; +} +static int btpan_get_local_role() +{ + debug("btpan_dev_local_role:%d", btpan_dev_local_role); + return btpan_dev_local_role; +} +static bt_status_t btpan_connect(const bt_bdaddr_t *bd_addr, int local_role, int remote_role) +{ + debug("local_role:%d, remote_role:%d", local_role, remote_role); + int bta_local_role = btpan_role_to_bta(local_role); + int bta_remote_role = btpan_role_to_bta(remote_role); + btpan_new_conn(-1, bd_addr->address, bta_local_role, bta_remote_role); + BTA_PanOpen((UINT8*)bd_addr->address, bta_local_role, bta_remote_role); + return BT_STATUS_SUCCESS; +} +static void btif_in_pan_generic_evt(UINT16 event, char *p_param) +{ + BTIF_TRACE_EVENT2("%s: event=%d", __FUNCTION__, event); + switch (event) { + case BTIF_PAN_CB_DISCONNECTING: + { + bt_bdaddr_t *bd_addr = (bt_bdaddr_t*)p_param; + btpan_conn_t* conn = btpan_find_conn_addr(bd_addr->address); + int btpan_conn_local_role; + int btpan_remote_role; + asrt(conn != NULL); + if (conn) { + btpan_conn_local_role = bta_role_to_btpan(conn->local_role); + btpan_remote_role = bta_role_to_btpan(conn->remote_role); + callback.connection_state_cb(BTPAN_STATE_DISCONNECTING, BT_STATUS_SUCCESS, + (const bt_bdaddr_t*)conn->peer, btpan_conn_local_role, btpan_remote_role); + } + } break; + default: + { + BTIF_TRACE_WARNING2("%s : Unknown event 0x%x", __FUNCTION__, event); + } + break; + } +} +static bt_status_t btpan_disconnect(const bt_bdaddr_t *bd_addr) +{ + debug("in"); + btpan_conn_t* conn = btpan_find_conn_addr(bd_addr->address); + if(conn && conn->handle >= 0) + { + BTA_PanClose(conn->handle); + /* Inform the application that the disconnect has been initiated successfully */ + btif_transfer_context(btif_in_pan_generic_evt, BTIF_PAN_CB_DISCONNECTING, + (char *)bd_addr, sizeof(bt_bdaddr_t), NULL); + return BT_STATUS_SUCCESS; + } + return BT_STATUS_FAIL; +} +static int pth = -1; +void create_tap_read_thread(int tap_fd) +{ + debug("in"); + if(pth < 0) + { + pth = btsock_thread_create(btpan_tap_fd_signaled, NULL); + if(pth >= 0) + btsock_thread_add_fd(pth, tap_fd, 0, SOCK_THREAD_FD_RD, 0); + } +} +void destroy_tap_read_thread(void) +{ + if(pth >= 0) + { + btsock_thread_exit(pth); + pth = -1; + } +} +static int tap_if_up(const char *devname, BD_ADDR addr) +{ + struct ifreq ifr; + int sk, err; + + sk = socket(AF_INET, SOCK_DGRAM, 0); + + //set mac addr + memset(&ifr, 0, sizeof(ifr)); + strncpy(ifr.ifr_name, devname, IFNAMSIZ - 1); + err = ioctl(sk, SIOCGIFHWADDR, &ifr); + if(err < 0) + { + error("Could not get network hardware for interface:%s, errno:%s", devname, strerror(errno)); + close(sk); + return -1; + } + debug("found mac address for interface:%s = %02x:%02x:%02x:%02x:%02x:%02x", devname, + ifr.ifr_hwaddr.sa_data[0], ifr.ifr_hwaddr.sa_data[1], ifr.ifr_hwaddr.sa_data[2], + ifr.ifr_hwaddr.sa_data[3], ifr.ifr_hwaddr.sa_data[4], ifr.ifr_hwaddr.sa_data[5]); + strncpy(ifr.ifr_name, devname, IFNAMSIZ - 1); + memcpy(ifr.ifr_hwaddr.sa_data, addr, 6); + debug("setting bt address for interface:%s = %02x:%02x:%02x:%02x:%02x:%02x", devname, + ifr.ifr_hwaddr.sa_data[0], ifr.ifr_hwaddr.sa_data[1], ifr.ifr_hwaddr.sa_data[2], + ifr.ifr_hwaddr.sa_data[3], ifr.ifr_hwaddr.sa_data[4], ifr.ifr_hwaddr.sa_data[5]); + + err = ioctl(sk, SIOCSIFHWADDR, (caddr_t)&ifr); + + if (err < 0) { + error("Could not set bt address for interface:%s, errno:%s", devname, strerror(errno)); + close(sk); + return -1; + } + + //bring it up + memset(&ifr, 0, sizeof(ifr)); + strncpy(ifr.ifr_name, devname, IF_NAMESIZE - 1); + + ifr.ifr_flags |= IFF_UP; + ifr.ifr_flags |= IFF_MULTICAST; + + err = ioctl(sk, SIOCSIFFLAGS, (caddr_t) &ifr); + + + if (err < 0) { + error("Could not bring up network interface:%s, errno:%d", devname, errno); + close(sk); + return -1; + } + close(sk); + debug("network interface: %s is up", devname); + return 0; +} + +static int tap_if_down(const char *devname) +{ + struct ifreq ifr; + int sk, err; + + sk = socket(AF_INET, SOCK_DGRAM, 0); + + memset(&ifr, 0, sizeof(ifr)); + strncpy(ifr.ifr_name, devname, IF_NAMESIZE - 1); + + ifr.ifr_flags &= ~IFF_UP; + + err = ioctl(sk, SIOCSIFFLAGS, (caddr_t) &ifr); + + close(sk); + + return 0; +} +int btpan_tap_open() +{ + debug("in"); + struct ifreq ifr; + int fd, err; + const char *clonedev = "/dev/tun"; + + /* open the clone device */ + + //system("insmod /system/lib/modules/tun.ko"); + if( (fd = open(clonedev, O_RDWR)) < 0 ) { + + debug("could not open %s, err:%d", clonedev, errno); + return fd; + } + + memset(&ifr, 0, sizeof(ifr)); + ifr.ifr_flags = IFF_TAP | IFF_NO_PI; + + strncpy(ifr.ifr_name, TAP_IF_NAME, IFNAMSIZ); + + /* try to create the device */ + if( (err = ioctl(fd, TUNSETIFF, (void *) &ifr)) < 0 )//|| tap_setup_ip(TAP_IF_NAME) == FALSE) + { + debug("ioctl error:%d, errno:%s", err, strerror(errno)); + close(fd); + return err; + } + BTM_GetLocalDeviceAddr (local_addr); + if(tap_if_up(TAP_IF_NAME, local_addr) == 0) + { + return fd; + } + error("can not bring up tap interface:%s", TAP_IF_NAME); + close(fd); + return -1; +} +int btpan_tap_send(int tap_fd, const BD_ADDR src, const BD_ADDR dst, UINT16 proto, const char* buf, + UINT16 len, BOOLEAN ext, BOOLEAN forward) +{ + debug("in"); + debug("SRC ADDR = %02x:%02x:%02x:%02x:%02x:%02x", + src[0], src[1], src[2], src[3], + src[4], src[5]); + debug("DST ADDR = %02x:%02x:%02x:%02x:%02x:%02x", + dst[0], dst[1], dst[2], dst[3], + dst[4], dst[5]); + + debug("Protocol = 0x%x", proto); + debug("Ext = 0x%x", ext); + debug("Forward = 0x%x", forward); + debug("Len = %d", len); + if(tap_fd != -1) + { + tETH_HDR eth_hdr; + //if(is_empty_eth_addr(dst)) + // memcpy(ð_hdr.h_dest, local_addr, ETH_ADDR_LEN); + //else + memcpy(ð_hdr.h_dest, dst, ETH_ADDR_LEN); + memcpy(ð_hdr.h_src, src, ETH_ADDR_LEN); + eth_hdr.h_proto = htons(proto); + char packet[2000]; + memcpy(packet, ð_hdr, sizeof(tETH_HDR)); + if(len > 2000) + { + ALOGE("btpan_tap_send eth packet size:%d is exceeded limit!", len); + return -1; + } + memcpy(packet + sizeof(tETH_HDR), buf, len); + + /* Send data to network interface */ + //btnet_send(btpan_cb.conn[i].sock.sock, &buffer, (len + sizeof(tETH_HDR))); + //dump_bin("packet to network", packet, len + sizeof(tETH_HDR)); + int ret = write(tap_fd, packet, len + sizeof(tETH_HDR)); + debug("ret:%d", ret); + return ret; + } + return -1; + +} +int btpan_tap_close(int fd) +{ + debug("in"); + tap_if_down(TAP_IF_NAME); + close(fd); + return 0; +} +btpan_conn_t * btpan_find_conn_handle(UINT16 handle) +{ + int i; + for(i = 0; i < MAX_PAN_CONNS; i++) + if(btpan_cb.conns[i].handle == handle) + return &btpan_cb.conns[i]; + return NULL; +} +btpan_conn_t* btpan_find_conn_addr(const BD_ADDR addr) +{ + int i; + for(i = 0; i < MAX_PAN_CONNS; i++) + if(memcmp(btpan_cb.conns[i].peer, addr, sizeof(BD_ADDR)) == 0) + return &btpan_cb.conns[i]; + return NULL; +} +static void btpan_cleanup_conn(btpan_conn_t* conn) +{ + if(conn) + { + conn->handle = -1; + conn->state = -1; + memset(&conn->peer, 0, sizeof(conn->peer)); + memset(&conn->eth_addr, 0, sizeof(conn->eth_addr)); + conn->local_role = conn->remote_role = 0; + } +} +btpan_conn_t* btpan_new_conn(int handle, const BD_ADDR addr, int local_role, int remote_role ) +{ + int i; + debug("in"); + for(i = 0; i < MAX_PAN_CONNS; i++) + { + debug("conns[%d]:%d", i, btpan_cb.conns[i].handle); + if(btpan_cb.conns[i].handle == -1) + { + debug("handle:%d, local_role:%d, remote_role:%d", handle, local_role, remote_role); + + btpan_cb.conns[i].handle = handle; + bdcpy(btpan_cb.conns[i].peer, addr); + btpan_cb.conns[i].local_role = local_role; + btpan_cb.conns[i].remote_role = remote_role; + return &btpan_cb.conns[i]; + } + } + debug("MAX_PAN_CONNS:%d exceeded, return NULL as failed", MAX_PAN_CONNS); + return NULL; +} + +void btpan_close_handle(btpan_conn_t *p) +{ + debug("btpan_close_handle : close handle %d", p->handle); + p->handle = -1; + p->local_role = -1; + p->remote_role = -1; + memset(&p->peer, 0, 6); +} +static inline int should_forward(tETH_HDR* hdr) +{ + if(ntohs(hdr->h_proto) == ETH_P_IP || ntohs(hdr->h_proto) == ETH_P_ARP) + return TRUE; + debug("unknown proto:%x", ntohs(hdr->h_proto)); + return FALSE; +} +extern void bta_pan_ci_rx_write(UINT16 handle, BD_ADDR dst, BD_ADDR src, UINT16 protocol, + UINT8 *p_data, UINT16 len, BOOLEAN ext); +static void forward_bnep(tETH_HDR* eth_hdr, char * packet, int size) +{ + int broadcast = eth_hdr->h_dest[0] & 1; + int i; + for(i = 0; i < MAX_PAN_CONNS; i++) + { + UINT16 handle = btpan_cb.conns[i].handle; + if(handle != (UINT16)-1 && + (broadcast || memcmp(btpan_cb.conns[i].eth_addr, eth_hdr->h_dest, sizeof(BD_ADDR)) == 0 + || memcmp(btpan_cb.conns[i].peer, eth_hdr->h_dest, sizeof(BD_ADDR)) == 0)) + { + debug("calling bta_pan_ci_rx_write, handle:%d", handle); + bta_pan_ci_rx_write(handle, eth_hdr->h_dest, eth_hdr->h_src, + ntohs(eth_hdr->h_proto), (UINT8*)packet, size, 0); + break; + } + } +} + +static void bta_pan_callback_transfer(UINT16 event, char *p_param) +{ + tBTA_PAN *p_data = (tBTA_PAN *)p_param; + switch(event) + { + case BTA_PAN_ENABLE_EVT: + debug("BTA_PAN_ENABLE_EVT"); + break; + case BTA_PAN_SET_ROLE_EVT: + { + int btpan_role = bta_role_to_btpan(p_data->set_role.role); + bt_status_t status = p_data->set_role.status == BTA_PAN_SUCCESS ? BT_STATUS_SUCCESS : BT_STATUS_FAIL; + btpan_control_state_t state = btpan_role == 0 ? BTPAN_STATE_DISABLED : BTPAN_STATE_ENABLED; + callback.control_state_cb(state, btpan_role, status, TAP_IF_NAME); + break; + } + case BTA_PAN_OPENING_EVT: + { + btpan_conn_t* conn; + bdstr_t bds; + bd2str((bt_bdaddr_t*)p_data->opening.bd_addr, &bds); + debug("BTA_PAN_OPENING_EVT handle %d, addr: %s", p_data->opening.handle, bds); + conn = btpan_find_conn_addr(p_data->opening.bd_addr); + + asrt(conn != NULL); + if (conn) + { + conn->handle = p_data->opening.handle; + int btpan_conn_local_role = bta_role_to_btpan(conn->local_role); + int btpan_remote_role = bta_role_to_btpan(conn->remote_role); + callback.connection_state_cb(BTPAN_STATE_CONNECTING, BT_STATUS_SUCCESS, + (const bt_bdaddr_t*)p_data->opening.bd_addr, btpan_conn_local_role, btpan_remote_role); + } + else + error("connection not found"); + break; + } + case BTA_PAN_OPEN_EVT: + { + debug("BTA_PAN_OPEN_EVT, open status:%d, bd_addr = [%02X:%02X:%02X:%02X:%02X:%02X]", + p_data->open.status, + p_data->open.bd_addr[0], p_data->open.bd_addr[1], p_data->open.bd_addr[2], + p_data->open.bd_addr[3], p_data->open.bd_addr[4], p_data->open.bd_addr[5]); + btpan_connection_state_t state; + bt_status_t status; + if(p_data->open.status == BTA_PAN_SUCCESS) + { + state = BTPAN_STATE_CONNECTED; + status = BT_STATUS_SUCCESS; + } + else + { + state = BTPAN_STATE_DISCONNECTED; + status = BT_STATUS_FAIL; + } + btpan_conn_t* conn = btpan_find_conn_handle(p_data->open.handle); + debug("BTA_PAN_OPEN_EVT handle:%d, conn:%p", p_data->open.handle, conn); + debug("conn bta local_role:%d, bta remote role:%d", conn->local_role, conn->remote_role); + int btpan_conn_local_role = bta_role_to_btpan(p_data->open.local_role); + debug("bta local_role:%d, bta remote role:%d", p_data->open.local_role, p_data->open.peer_role); + int btpan_remote_role = bta_role_to_btpan(p_data->open.peer_role); + callback.connection_state_cb(state, status, (const bt_bdaddr_t*)p_data->open.bd_addr, + btpan_conn_local_role, btpan_remote_role); + break; + } + case BTA_PAN_CLOSE_EVT: + { + btpan_conn_t* conn = btpan_find_conn_handle(p_data->close.handle); + + ALOGI("%s: event = BTA_PAN_CLOSE_EVT handle %d", __FUNCTION__, p_data->close.handle); + + if(conn && conn->handle >= 0) + { + debug("BTA_PAN_CLOSE_EVT, conn local_role:%d, remote_role:%d", conn->local_role, conn->remote_role); + int btpan_conn_local_role = bta_role_to_btpan(conn->local_role); + int btpan_remote_role = bta_role_to_btpan(conn->remote_role); + callback.connection_state_cb(BTPAN_STATE_DISCONNECTED, 0, (const bt_bdaddr_t*)conn->peer, + btpan_conn_local_role, btpan_remote_role); + btpan_cleanup_conn(conn); + } + else + error("pan handle not found (%d)", p_data->close.handle); + break; + } + default: + debug("Unknown pan event %d", event); + break; + } +} + +static void bta_pan_callback(tBTA_PAN_EVT event, tBTA_PAN *p_data) +{ + btif_transfer_context(bta_pan_callback_transfer, event, (char*)p_data, sizeof(tBTA_PAN), NULL); +} +#define MAX_PACKET_SIZE 2000 +static void btpan_tap_fd_signaled(int fd, int type, int flags, uint32_t user_id) +{ + char packet[MAX_PACKET_SIZE]; + tETH_HDR eth_hdr; + if(flags & SOCK_THREAD_FD_EXCEPTION) + { + error("pan tap fd:%d exception", fd); + } + else if(flags & SOCK_THREAD_FD_RD) + { + debug("tab fd read trigged, data"); + int size = read(fd, packet, MAX_PACKET_SIZE); + debug("tap fd read trigged, read size:%d", size); + memcpy(ð_hdr, &packet, sizeof(tETH_HDR)); + debug("eth src = %02x:%02x:%02x:%02x:%02x:%02x", + eth_hdr.h_src[0], eth_hdr.h_src[1], eth_hdr.h_src[2], eth_hdr.h_src[3], + eth_hdr.h_src[4], eth_hdr.h_src[5]); + debug("eth dest = %02x:%02x:%02x:%02x:%02x:%02x", + eth_hdr.h_dest[0], eth_hdr.h_dest[1], eth_hdr.h_dest[2], eth_hdr.h_dest[3], + eth_hdr.h_dest[4], eth_hdr.h_dest[5]); + //dump_bin("eth packet received", packet, size); + if(should_forward(ð_hdr)) + { + forward_bnep(ð_hdr, packet + sizeof(tETH_HDR), size - sizeof(tETH_HDR)); + } + btsock_thread_add_fd(pth, fd, 0, SOCK_THREAD_FD_RD | SOCK_THREAD_ADD_FD_SYNC, 0); + } +} + + |