| #include <stdint.h> |
| #include <fcntl.h> |
| #include <sys/socket.h> |
| #include <netlink/genl/genl.h> |
| #include <netlink/genl/family.h> |
| #include <netlink/genl/ctrl.h> |
| #include <linux/rtnetlink.h> |
| #include <netpacket/packet.h> |
| #include <linux/filter.h> |
| #include <linux/errqueue.h> |
| #include <errno.h> |
| |
| #include <linux/pkt_sched.h> |
| #include <netlink/object-api.h> |
| #include <netlink/netlink.h> |
| #include <netlink/socket.h> |
| #include <netlink/attr.h> |
| #include <netlink/handlers.h> |
| #include <netlink/msg.h> |
| |
| #include <dirent.h> |
| #include <net/if.h> |
| |
| #include "sync.h" |
| |
| #define LOG_TAG "WifiHAL" |
| |
| #include <utils/Log.h> |
| |
| #include "wifi_hal.h" |
| #include "common.h" |
| #include "cpp_bindings.h" |
| #include "rtt.h" |
| /* |
| BUGBUG: normally, libnl allocates ports for all connections it makes; but |
| being a static library, it doesn't really know how many other netlink connections |
| are made by the same process, if connections come from different shared libraries. |
| These port assignments exist to solve that problem - temporarily. We need to fix |
| libnl to try and allocate ports across the entire process. |
| */ |
| |
| #define WIFI_HAL_CMD_SOCK_PORT 644 |
| #define WIFI_HAL_EVENT_SOCK_PORT 645 |
| |
| #define FEATURE_SET 0 |
| #define FEATURE_SET_MATRIX 1 |
| #define ATTR_NODFS_VALUE 3 |
| #define ATTR_COUNTRY_CODE 4 |
| |
| static void internal_event_handler(wifi_handle handle, int events); |
| static int internal_no_seq_check(nl_msg *msg, void *arg); |
| static int internal_valid_message_handler(nl_msg *msg, void *arg); |
| static int wifi_get_multicast_id(wifi_handle handle, const char *name, const char *group); |
| static int wifi_add_membership(wifi_handle handle, const char *group); |
| static wifi_error wifi_init_interfaces(wifi_handle handle); |
| static wifi_error wifi_start_rssi_monitoring(wifi_request_id id, wifi_interface_handle |
| iface, s8 max_rssi, s8 min_rssi, wifi_rssi_event_handler eh); |
| static wifi_error wifi_stop_rssi_monitoring(wifi_request_id id, wifi_interface_handle iface); |
| |
| typedef enum wifi_attr { |
| ANDR_WIFI_ATTRIBUTE_NUM_FEATURE_SET, |
| ANDR_WIFI_ATTRIBUTE_FEATURE_SET, |
| ANDR_WIFI_ATTRIBUTE_PNO_RANDOM_MAC_OUI |
| } wifi_attr_t; |
| |
| enum wifi_rssi_monitor_attr { |
| RSSI_MONITOR_ATTRIBUTE_MAX_RSSI, |
| RSSI_MONITOR_ATTRIBUTE_MIN_RSSI, |
| RSSI_MONITOR_ATTRIBUTE_START, |
| }; |
| |
| /* Initialize/Cleanup */ |
| |
| void wifi_socket_set_local_port(struct nl_sock *sock, uint32_t port) |
| { |
| uint32_t pid = getpid() & 0x3FFFFF; |
| nl_socket_set_local_port(sock, pid + (port << 22)); |
| } |
| |
| static nl_sock * wifi_create_nl_socket(int port) |
| { |
| // ALOGI("Creating socket"); |
| struct nl_sock *sock = nl_socket_alloc(); |
| if (sock == NULL) { |
| ALOGE("Could not create handle"); |
| return NULL; |
| } |
| |
| wifi_socket_set_local_port(sock, port); |
| |
| struct sockaddr *addr = NULL; |
| // ALOGI("sizeof(sockaddr) = %d, sizeof(sockaddr_nl) = %d", sizeof(*addr), sizeof(*addr_nl)); |
| |
| // ALOGI("Connecting socket"); |
| if (nl_connect(sock, NETLINK_GENERIC)) { |
| ALOGE("Could not connect handle"); |
| nl_socket_free(sock); |
| return NULL; |
| } |
| |
| // ALOGI("Making socket nonblocking"); |
| /* |
| if (nl_socket_set_nonblocking(sock)) { |
| ALOGE("Could make socket non-blocking"); |
| nl_socket_free(sock); |
| return NULL; |
| } |
| */ |
| |
| return sock; |
| } |
| |
| /*initialize function pointer table with Broadcom HHAL API*/ |
| wifi_error init_wifi_vendor_hal_func_table(wifi_hal_fn *fn) |
| { |
| if (fn == NULL) { |
| return WIFI_ERROR_UNKNOWN; |
| } |
| fn->wifi_initialize = wifi_initialize; |
| fn->wifi_cleanup = wifi_cleanup; |
| fn->wifi_event_loop = wifi_event_loop; |
| fn->wifi_get_supported_feature_set = wifi_get_supported_feature_set; |
| fn->wifi_get_concurrency_matrix = wifi_get_concurrency_matrix; |
| fn->wifi_set_scanning_mac_oui = wifi_set_scanning_mac_oui; |
| fn->wifi_get_ifaces = wifi_get_ifaces; |
| fn->wifi_get_iface_name = wifi_get_iface_name; |
| fn->wifi_start_gscan = wifi_start_gscan; |
| fn->wifi_stop_gscan = wifi_stop_gscan; |
| fn->wifi_get_cached_gscan_results = wifi_get_cached_gscan_results; |
| fn->wifi_set_bssid_hotlist = wifi_set_bssid_hotlist; |
| fn->wifi_reset_bssid_hotlist = wifi_reset_bssid_hotlist; |
| fn->wifi_set_significant_change_handler = wifi_set_significant_change_handler; |
| fn->wifi_reset_significant_change_handler = wifi_reset_significant_change_handler; |
| fn->wifi_get_gscan_capabilities = wifi_get_gscan_capabilities; |
| fn->wifi_get_link_stats = wifi_get_link_stats; |
| fn->wifi_get_valid_channels = wifi_get_valid_channels; |
| fn->wifi_rtt_range_request = wifi_rtt_range_request; |
| fn->wifi_rtt_range_cancel = wifi_rtt_range_cancel; |
| fn->wifi_get_rtt_capabilities = wifi_get_rtt_capabilities; |
| fn->wifi_set_nodfs_flag = wifi_set_nodfs_flag; |
| fn->wifi_start_logging = wifi_start_logging; |
| fn->wifi_set_epno_list = wifi_set_epno_list; |
| fn->wifi_set_country_code = wifi_set_country_code; |
| fn->wifi_get_firmware_memory_dump = wifi_get_firmware_memory_dump; |
| fn->wifi_set_log_handler = wifi_set_log_handler; |
| fn->wifi_reset_log_handler = wifi_reset_log_handler; |
| fn->wifi_set_alert_handler = wifi_set_alert_handler; |
| fn->wifi_reset_alert_handler = wifi_reset_alert_handler; |
| fn->wifi_get_firmware_version = wifi_get_firmware_version; |
| fn->wifi_get_ring_buffers_status = wifi_get_ring_buffers_status; |
| fn->wifi_get_logger_supported_feature_set = wifi_get_logger_supported_feature_set; |
| fn->wifi_get_ring_data = wifi_get_ring_data; |
| fn->wifi_get_driver_version = wifi_get_driver_version; |
| fn->wifi_set_ssid_white_list = wifi_set_ssid_white_list; |
| fn->wifi_set_gscan_roam_params = wifi_set_gscan_roam_params; |
| fn->wifi_set_bssid_preference = wifi_set_bssid_preference; |
| fn->wifi_set_bssid_blacklist = wifi_set_bssid_blacklist; |
| fn->wifi_enable_lazy_roam = wifi_enable_lazy_roam; |
| fn->wifi_start_rssi_monitoring = wifi_start_rssi_monitoring; |
| fn->wifi_stop_rssi_monitoring = wifi_stop_rssi_monitoring; |
| fn->wifi_start_sending_offloaded_packet = wifi_start_sending_offloaded_packet; |
| fn->wifi_stop_sending_offloaded_packet = wifi_stop_sending_offloaded_packet; |
| return WIFI_SUCCESS; |
| } |
| |
| wifi_error wifi_initialize(wifi_handle *handle) |
| { |
| srand(getpid()); |
| |
| ALOGI("Initializing wifi"); |
| hal_info *info = (hal_info *)malloc(sizeof(hal_info)); |
| if (info == NULL) { |
| ALOGE("Could not allocate hal_info"); |
| return WIFI_ERROR_UNKNOWN; |
| } |
| |
| memset(info, 0, sizeof(*info)); |
| |
| ALOGI("Creating socket"); |
| if (socketpair(AF_UNIX, SOCK_STREAM, 0, info->cleanup_socks) == -1) { |
| ALOGE("Could not create cleanup sockets"); |
| free(info); |
| return WIFI_ERROR_UNKNOWN; |
| } |
| |
| struct nl_sock *cmd_sock = wifi_create_nl_socket(WIFI_HAL_CMD_SOCK_PORT); |
| if (cmd_sock == NULL) { |
| ALOGE("Could not create handle"); |
| free(info); |
| return WIFI_ERROR_UNKNOWN; |
| } |
| |
| struct nl_sock *event_sock = wifi_create_nl_socket(WIFI_HAL_EVENT_SOCK_PORT); |
| if (event_sock == NULL) { |
| ALOGE("Could not create handle"); |
| nl_socket_free(cmd_sock); |
| free(info); |
| return WIFI_ERROR_UNKNOWN; |
| } |
| |
| struct nl_cb *cb = nl_socket_get_cb(event_sock); |
| if (cb == NULL) { |
| ALOGE("Could not create handle"); |
| nl_socket_free(cmd_sock); |
| nl_socket_free(event_sock); |
| free(info); |
| return WIFI_ERROR_UNKNOWN; |
| } |
| |
| // ALOGI("cb->refcnt = %d", cb->cb_refcnt); |
| nl_cb_set(cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, internal_no_seq_check, info); |
| nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, internal_valid_message_handler, info); |
| nl_cb_put(cb); |
| |
| info->cmd_sock = cmd_sock; |
| info->event_sock = event_sock; |
| info->clean_up = false; |
| info->in_event_loop = false; |
| |
| info->event_cb = (cb_info *)malloc(sizeof(cb_info) * DEFAULT_EVENT_CB_SIZE); |
| info->alloc_event_cb = DEFAULT_EVENT_CB_SIZE; |
| info->num_event_cb = 0; |
| |
| info->cmd = (cmd_info *)malloc(sizeof(cmd_info) * DEFAULT_CMD_SIZE); |
| info->alloc_cmd = DEFAULT_CMD_SIZE; |
| info->num_cmd = 0; |
| |
| info->nl80211_family_id = genl_ctrl_resolve(cmd_sock, "nl80211"); |
| if (info->nl80211_family_id < 0) { |
| ALOGE("Could not resolve nl80211 familty id"); |
| nl_socket_free(cmd_sock); |
| nl_socket_free(event_sock); |
| free(info); |
| return WIFI_ERROR_UNKNOWN; |
| } |
| |
| pthread_mutex_init(&info->cb_lock, NULL); |
| |
| *handle = (wifi_handle) info; |
| |
| wifi_add_membership(*handle, "scan"); |
| wifi_add_membership(*handle, "mlme"); |
| wifi_add_membership(*handle, "regulatory"); |
| wifi_add_membership(*handle, "vendor"); |
| |
| wifi_init_interfaces(*handle); |
| // ALOGI("Found %d interfaces", info->num_interfaces); |
| |
| |
| ALOGI("Initialized Wifi HAL Successfully; vendor cmd = %d", NL80211_CMD_VENDOR); |
| return WIFI_SUCCESS; |
| } |
| |
| static int wifi_add_membership(wifi_handle handle, const char *group) |
| { |
| hal_info *info = getHalInfo(handle); |
| |
| int id = wifi_get_multicast_id(handle, "nl80211", group); |
| if (id < 0) { |
| ALOGE("Could not find group %s", group); |
| return id; |
| } |
| |
| int ret = nl_socket_add_membership(info->event_sock, id); |
| if (ret < 0) { |
| ALOGE("Could not add membership to group %s", group); |
| } |
| |
| // ALOGI("Successfully added membership for group %s", group); |
| return ret; |
| } |
| |
| static void internal_cleaned_up_handler(wifi_handle handle) |
| { |
| hal_info *info = getHalInfo(handle); |
| wifi_cleaned_up_handler cleaned_up_handler = info->cleaned_up_handler; |
| |
| if (info->cmd_sock != 0) { |
| close(info->cleanup_socks[0]); |
| close(info->cleanup_socks[1]); |
| nl_socket_free(info->cmd_sock); |
| nl_socket_free(info->event_sock); |
| info->cmd_sock = NULL; |
| info->event_sock = NULL; |
| } |
| |
| (*cleaned_up_handler)(handle); |
| pthread_mutex_destroy(&info->cb_lock); |
| free(info); |
| |
| ALOGI("Internal cleanup completed"); |
| } |
| |
| void wifi_cleanup(wifi_handle handle, wifi_cleaned_up_handler handler) |
| { |
| hal_info *info = getHalInfo(handle); |
| char buf[64]; |
| |
| info->cleaned_up_handler = handler; |
| if (write(info->cleanup_socks[0], "Exit", 4) < 1) { |
| // As a fallback set the cleanup flag to TRUE |
| ALOGE("could not write to the cleanup socket"); |
| } else { |
| // Listen to the response |
| // Hopefully we dont get errors or get hung up |
| // Not much can be done in that case, but assume that |
| // it has rx'ed the Exit message to exit the thread. |
| // As a fallback set the cleanup flag to TRUE |
| memset(buf, 0, sizeof(buf)); |
| int result = read(info->cleanup_socks[0], buf, sizeof(buf)); |
| ALOGE("%s: Read after POLL returned %d, error no = %d", __FUNCTION__, result, errno); |
| if (strncmp(buf, "Done", 4) == 0) { |
| ALOGE("Event processing terminated"); |
| } else { |
| ALOGD("Rx'ed %s", buf); |
| } |
| } |
| info->clean_up = true; |
| pthread_mutex_lock(&info->cb_lock); |
| |
| int bad_commands = 0; |
| |
| for (int i = 0; i < info->num_event_cb; i++) { |
| cb_info *cbi = &(info->event_cb[i]); |
| WifiCommand *cmd = (WifiCommand *)cbi->cb_arg; |
| ALOGI("Command left in event_cb %p:%s", cmd, (cmd ? cmd->getType(): "")); |
| } |
| |
| while (info->num_cmd > bad_commands) { |
| int num_cmd = info->num_cmd; |
| cmd_info *cmdi = &(info->cmd[bad_commands]); |
| WifiCommand *cmd = cmdi->cmd; |
| if (cmd != NULL) { |
| ALOGI("Cancelling command %p:%s", cmd, cmd->getType()); |
| pthread_mutex_unlock(&info->cb_lock); |
| cmd->cancel(); |
| pthread_mutex_lock(&info->cb_lock); |
| /* release reference added when command is saved */ |
| cmd->releaseRef(); |
| if (num_cmd == info->num_cmd) { |
| ALOGI("Cancelling command %p:%s did not work", cmd, (cmd ? cmd->getType(): "")); |
| bad_commands++; |
| } |
| } |
| } |
| |
| for (int i = 0; i < info->num_event_cb; i++) { |
| cb_info *cbi = &(info->event_cb[i]); |
| WifiCommand *cmd = (WifiCommand *)cbi->cb_arg; |
| ALOGE("Leaked command %p", cmd); |
| } |
| pthread_mutex_unlock(&info->cb_lock); |
| internal_cleaned_up_handler(handle); |
| } |
| |
| static int internal_pollin_handler(wifi_handle handle) |
| { |
| hal_info *info = getHalInfo(handle); |
| struct nl_cb *cb = nl_socket_get_cb(info->event_sock); |
| int res = nl_recvmsgs(info->event_sock, cb); |
| // ALOGD("nl_recvmsgs returned %d", res); |
| nl_cb_put(cb); |
| return res; |
| } |
| |
| /* Run event handler */ |
| void wifi_event_loop(wifi_handle handle) |
| { |
| hal_info *info = getHalInfo(handle); |
| if (info->in_event_loop) { |
| return; |
| } else { |
| info->in_event_loop = true; |
| } |
| |
| pollfd pfd[2]; |
| memset(&pfd[0], 0, sizeof(pollfd) * 2); |
| |
| pfd[0].fd = nl_socket_get_fd(info->event_sock); |
| pfd[0].events = POLLIN; |
| pfd[1].fd = info->cleanup_socks[1]; |
| pfd[1].events = POLLIN; |
| |
| char buf[2048]; |
| /* TODO: Add support for timeouts */ |
| |
| do { |
| int timeout = -1; /* Infinite timeout */ |
| pfd[0].revents = 0; |
| pfd[1].revents = 0; |
| // ALOGI("Polling socket"); |
| int result = poll(pfd, 2, timeout); |
| if (result < 0) { |
| // ALOGE("Error polling socket"); |
| } else if (pfd[0].revents & POLLERR) { |
| ALOGE("POLL Error; error no = %d", errno); |
| int result2 = read(pfd[0].fd, buf, sizeof(buf)); |
| ALOGE("Read after POLL returned %d, error no = %d", result2, errno); |
| } else if (pfd[0].revents & POLLHUP) { |
| ALOGE("Remote side hung up"); |
| break; |
| } else if (pfd[0].revents & POLLIN) { |
| // ALOGI("Found some events!!!"); |
| internal_pollin_handler(handle); |
| } else if (pfd[1].revents & POLLIN) { |
| memset(buf, 0, sizeof(buf)); |
| int result2 = read(pfd[1].fd, buf, sizeof(buf)); |
| ALOGE("%s: Read after POLL returned %d, error no = %d", __FUNCTION__, result2, errno); |
| if (strncmp(buf, "Exit", 4) == 0) { |
| ALOGD("Got a signal to exit!!!"); |
| if (write(pfd[1].fd, "Done", 4) < 1) { |
| ALOGE("could not write to the cleanup socket"); |
| } |
| break; |
| } else { |
| ALOGD("Rx'ed %s on the cleanup socket\n", buf); |
| } |
| } else { |
| ALOGE("Unknown event - %0x, %0x", pfd[0].revents, pfd[1].revents); |
| } |
| } while (!info->clean_up); |
| ALOGI("Exit %s", __FUNCTION__); |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////////////// |
| |
| static int internal_no_seq_check(struct nl_msg *msg, void *arg) |
| { |
| return NL_OK; |
| } |
| |
| static int internal_valid_message_handler(nl_msg *msg, void *arg) |
| { |
| // ALOGI("got an event"); |
| |
| wifi_handle handle = (wifi_handle)arg; |
| hal_info *info = getHalInfo(handle); |
| |
| WifiEvent event(msg); |
| int res = event.parse(); |
| if (res < 0) { |
| ALOGE("Failed to parse event: %d", res); |
| return NL_SKIP; |
| } |
| |
| int cmd = event.get_cmd(); |
| uint32_t vendor_id = 0; |
| int subcmd = 0; |
| |
| if (cmd == NL80211_CMD_VENDOR) { |
| vendor_id = event.get_u32(NL80211_ATTR_VENDOR_ID); |
| subcmd = event.get_u32(NL80211_ATTR_VENDOR_SUBCMD); |
| ALOGV("event received %s, vendor_id = 0x%0x, subcmd = 0x%0x", |
| event.get_cmdString(), vendor_id, subcmd); |
| } else { |
| // ALOGV("event received %s", event.get_cmdString()); |
| } |
| |
| // ALOGV("event received %s, vendor_id = 0x%0x", event.get_cmdString(), vendor_id); |
| // event.log(); |
| |
| bool dispatched = false; |
| |
| pthread_mutex_lock(&info->cb_lock); |
| |
| for (int i = 0; i < info->num_event_cb; i++) { |
| if (cmd == info->event_cb[i].nl_cmd) { |
| if (cmd == NL80211_CMD_VENDOR |
| && ((vendor_id != info->event_cb[i].vendor_id) |
| || (subcmd != info->event_cb[i].vendor_subcmd))) |
| { |
| /* event for a different vendor, ignore it */ |
| continue; |
| } |
| |
| cb_info *cbi = &(info->event_cb[i]); |
| nl_recvmsg_msg_cb_t cb_func = cbi->cb_func; |
| void *cb_arg = cbi->cb_arg; |
| WifiCommand *cmd = (WifiCommand *)cbi->cb_arg; |
| if (cmd != NULL) { |
| cmd->addRef(); |
| } |
| pthread_mutex_unlock(&info->cb_lock); |
| if (cb_func) |
| (*cb_func)(msg, cb_arg); |
| if (cmd != NULL) { |
| cmd->releaseRef(); |
| } |
| |
| return NL_OK; |
| } |
| } |
| |
| pthread_mutex_unlock(&info->cb_lock); |
| return NL_OK; |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////////////// |
| |
| class GetMulticastIdCommand : public WifiCommand |
| { |
| private: |
| const char *mName; |
| const char *mGroup; |
| int mId; |
| public: |
| GetMulticastIdCommand(wifi_handle handle, const char *name, const char *group) |
| : WifiCommand("GetMulticastIdCommand", handle, 0) |
| { |
| mName = name; |
| mGroup = group; |
| mId = -1; |
| } |
| |
| int getId() { |
| return mId; |
| } |
| |
| virtual int create() { |
| int nlctrlFamily = genl_ctrl_resolve(mInfo->cmd_sock, "nlctrl"); |
| // ALOGI("ctrl family = %d", nlctrlFamily); |
| int ret = mMsg.create(nlctrlFamily, CTRL_CMD_GETFAMILY, 0, 0); |
| if (ret < 0) { |
| return ret; |
| } |
| ret = mMsg.put_string(CTRL_ATTR_FAMILY_NAME, mName); |
| return ret; |
| } |
| |
| virtual int handleResponse(WifiEvent& reply) { |
| |
| // ALOGI("handling reponse in %s", __func__); |
| |
| struct nlattr **tb = reply.attributes(); |
| struct genlmsghdr *gnlh = reply.header(); |
| struct nlattr *mcgrp = NULL; |
| int i; |
| |
| if (!tb[CTRL_ATTR_MCAST_GROUPS]) { |
| ALOGI("No multicast groups found"); |
| return NL_SKIP; |
| } else { |
| // ALOGI("Multicast groups attr size = %d", nla_len(tb[CTRL_ATTR_MCAST_GROUPS])); |
| } |
| |
| for_each_attr(mcgrp, tb[CTRL_ATTR_MCAST_GROUPS], i) { |
| |
| // ALOGI("Processing group"); |
| struct nlattr *tb2[CTRL_ATTR_MCAST_GRP_MAX + 1]; |
| nla_parse(tb2, CTRL_ATTR_MCAST_GRP_MAX, (nlattr *)nla_data(mcgrp), |
| nla_len(mcgrp), NULL); |
| if (!tb2[CTRL_ATTR_MCAST_GRP_NAME] || !tb2[CTRL_ATTR_MCAST_GRP_ID]) { |
| continue; |
| } |
| |
| char *grpName = (char *)nla_data(tb2[CTRL_ATTR_MCAST_GRP_NAME]); |
| int grpNameLen = nla_len(tb2[CTRL_ATTR_MCAST_GRP_NAME]); |
| |
| // ALOGI("Found group name %s", grpName); |
| |
| if (strncmp(grpName, mGroup, grpNameLen) != 0) |
| continue; |
| |
| mId = nla_get_u32(tb2[CTRL_ATTR_MCAST_GRP_ID]); |
| break; |
| } |
| |
| return NL_SKIP; |
| } |
| |
| }; |
| |
| class SetPnoMacAddrOuiCommand : public WifiCommand { |
| |
| private: |
| byte *mOui; |
| feature_set *fset; |
| feature_set *feature_matrix; |
| int *fm_size; |
| int set_size_max; |
| public: |
| SetPnoMacAddrOuiCommand(wifi_interface_handle handle, oui scan_oui) |
| : WifiCommand("SetPnoMacAddrOuiCommand", handle, 0) |
| { |
| mOui = scan_oui; |
| } |
| |
| int createRequest(WifiRequest& request, int subcmd, byte *scan_oui) { |
| int result = request.create(GOOGLE_OUI, subcmd); |
| if (result < 0) { |
| return result; |
| } |
| |
| nlattr *data = request.attr_start(NL80211_ATTR_VENDOR_DATA); |
| result = request.put(ANDR_WIFI_ATTRIBUTE_PNO_RANDOM_MAC_OUI, scan_oui, DOT11_OUI_LEN); |
| if (result < 0) { |
| return result; |
| } |
| |
| request.attr_end(data); |
| return WIFI_SUCCESS; |
| |
| } |
| |
| int start() { |
| ALOGD("Sending mac address OUI"); |
| WifiRequest request(familyId(), ifaceId()); |
| int result = createRequest(request, WIFI_SUBCMD_SET_PNO_RANDOM_MAC_OUI, mOui); |
| if (result != WIFI_SUCCESS) { |
| ALOGE("failed to create request; result = %d", result); |
| return result; |
| } |
| |
| result = requestResponse(request); |
| if (result != WIFI_SUCCESS) { |
| ALOGE("failed to set scanning mac OUI; result = %d", result); |
| } |
| |
| return result; |
| } |
| protected: |
| virtual int handleResponse(WifiEvent& reply) { |
| ALOGD("Request complete!"); |
| /* Nothing to do on response! */ |
| return NL_SKIP; |
| } |
| }; |
| |
| class SetNodfsCommand : public WifiCommand { |
| |
| private: |
| u32 mNoDfs; |
| public: |
| SetNodfsCommand(wifi_interface_handle handle, u32 nodfs) |
| : WifiCommand("SetNodfsCommand", handle, 0) { |
| mNoDfs = nodfs; |
| } |
| virtual int create() { |
| int ret; |
| |
| ret = mMsg.create(GOOGLE_OUI, WIFI_SUBCMD_NODFS_SET); |
| if (ret < 0) { |
| ALOGE("Can't create message to send to driver - %d", ret); |
| return ret; |
| } |
| |
| nlattr *data = mMsg.attr_start(NL80211_ATTR_VENDOR_DATA); |
| ret = mMsg.put_u32(ATTR_NODFS_VALUE, mNoDfs); |
| if (ret < 0) { |
| return ret; |
| } |
| |
| mMsg.attr_end(data); |
| return WIFI_SUCCESS; |
| } |
| }; |
| |
| class SetCountryCodeCommand : public WifiCommand { |
| private: |
| const char *mCountryCode; |
| public: |
| SetCountryCodeCommand(wifi_interface_handle handle, const char *country_code) |
| : WifiCommand("SetCountryCodeCommand", handle, 0) { |
| mCountryCode = country_code; |
| } |
| virtual int create() { |
| int ret; |
| |
| ret = mMsg.create(GOOGLE_OUI, WIFI_SUBCMD_SET_COUNTRY_CODE); |
| if (ret < 0) { |
| ALOGE("Can't create message to send to driver - %d", ret); |
| return ret; |
| } |
| |
| nlattr *data = mMsg.attr_start(NL80211_ATTR_VENDOR_DATA); |
| ret = mMsg.put_string(ATTR_COUNTRY_CODE, mCountryCode); |
| if (ret < 0) { |
| return ret; |
| } |
| |
| mMsg.attr_end(data); |
| return WIFI_SUCCESS; |
| |
| } |
| }; |
| |
| class SetRSSIMonitorCommand : public WifiCommand { |
| private: |
| s8 mMax_rssi; |
| s8 mMin_rssi; |
| wifi_rssi_event_handler mHandler; |
| public: |
| SetRSSIMonitorCommand(wifi_request_id id, wifi_interface_handle handle, |
| s8 max_rssi, s8 min_rssi, wifi_rssi_event_handler eh) |
| : WifiCommand("SetRSSIMonitorCommand", handle, id), mMax_rssi(max_rssi), mMin_rssi |
| (min_rssi), mHandler(eh) |
| { |
| } |
| int createRequest(WifiRequest& request, int enable) { |
| int result = request.create(GOOGLE_OUI, WIFI_SUBCMD_SET_RSSI_MONITOR); |
| if (result < 0) { |
| return result; |
| } |
| |
| nlattr *data = request.attr_start(NL80211_ATTR_VENDOR_DATA); |
| result = request.put_u32(RSSI_MONITOR_ATTRIBUTE_MAX_RSSI, (enable ? mMax_rssi: 0)); |
| if (result < 0) { |
| return result; |
| } |
| ALOGD("create request"); |
| result = request.put_u32(RSSI_MONITOR_ATTRIBUTE_MIN_RSSI, (enable? mMin_rssi: 0)); |
| if (result < 0) { |
| return result; |
| } |
| result = request.put_u32(RSSI_MONITOR_ATTRIBUTE_START, enable); |
| if (result < 0) { |
| return result; |
| } |
| request.attr_end(data); |
| return result; |
| } |
| |
| int start() { |
| WifiRequest request(familyId(), ifaceId()); |
| int result = createRequest(request, 1); |
| if (result < 0) { |
| return result; |
| } |
| result = requestResponse(request); |
| if (result < 0) { |
| ALOGI("Failed to set RSSI Monitor, result = %d", result); |
| return result; |
| } |
| ALOGI("Successfully set RSSI monitoring"); |
| registerVendorHandler(GOOGLE_OUI, GOOGLE_RSSI_MONITOR_EVENT); |
| |
| |
| if (result < 0) { |
| unregisterVendorHandler(GOOGLE_OUI, GOOGLE_RSSI_MONITOR_EVENT); |
| return result; |
| } |
| ALOGI("Done!"); |
| return result; |
| } |
| |
| virtual int cancel() { |
| |
| WifiRequest request(familyId(), ifaceId()); |
| int result = createRequest(request, 0); |
| if (result != WIFI_SUCCESS) { |
| ALOGE("failed to create request; result = %d", result); |
| } else { |
| result = requestResponse(request); |
| if (result != WIFI_SUCCESS) { |
| ALOGE("failed to stop RSSI monitoring = %d", result); |
| } |
| } |
| unregisterVendorHandler(GOOGLE_OUI, GOOGLE_RSSI_MONITOR_EVENT); |
| return WIFI_SUCCESS; |
| } |
| |
| virtual int handleResponse(WifiEvent& reply) { |
| /* Nothing to do on response! */ |
| return NL_SKIP; |
| } |
| |
| virtual int handleEvent(WifiEvent& event) { |
| ALOGI("Got a RSSI monitor event"); |
| |
| nlattr *vendor_data = event.get_attribute(NL80211_ATTR_VENDOR_DATA); |
| int len = event.get_vendor_data_len(); |
| |
| if (vendor_data == NULL || len == 0) { |
| ALOGI("RSSI monitor: No data"); |
| return NL_SKIP; |
| } |
| /* driver<->HAL event structure */ |
| #define RSSI_MONITOR_EVT_VERSION 1 |
| typedef struct { |
| u8 version; |
| s8 cur_rssi; |
| mac_addr BSSID; |
| } rssi_monitor_evt; |
| |
| rssi_monitor_evt *data = (rssi_monitor_evt *)event.get_vendor_data(); |
| |
| if (data->version != RSSI_MONITOR_EVT_VERSION) { |
| ALOGI("Event version mismatch %d, expected %d", data->version, RSSI_MONITOR_EVT_VERSION); |
| return NL_SKIP; |
| } |
| |
| if (*mHandler.on_rssi_threshold_breached) { |
| (*mHandler.on_rssi_threshold_breached)(id(), data->BSSID, data->cur_rssi); |
| } else { |
| ALOGW("No RSSI monitor handler registered"); |
| } |
| |
| return NL_SKIP; |
| } |
| |
| }; |
| |
| class GetFeatureSetCommand : public WifiCommand { |
| |
| private: |
| int feature_type; |
| feature_set *fset; |
| feature_set *feature_matrix; |
| int *fm_size; |
| int set_size_max; |
| public: |
| GetFeatureSetCommand(wifi_interface_handle handle, int feature, feature_set *set, |
| feature_set set_matrix[], int *size, int max_size) |
| : WifiCommand("GetFeatureSetCommand", handle, 0) |
| { |
| feature_type = feature; |
| fset = set; |
| feature_matrix = set_matrix; |
| fm_size = size; |
| set_size_max = max_size; |
| } |
| |
| virtual int create() { |
| int ret; |
| |
| if(feature_type == FEATURE_SET) { |
| ret = mMsg.create(GOOGLE_OUI, WIFI_SUBCMD_GET_FEATURE_SET); |
| } else if (feature_type == FEATURE_SET_MATRIX) { |
| ret = mMsg.create(GOOGLE_OUI, WIFI_SUBCMD_GET_FEATURE_SET_MATRIX); |
| } else { |
| ALOGE("Unknown feature type %d", feature_type); |
| return -1; |
| } |
| |
| if (ret < 0) { |
| ALOGE("Can't create message to send to driver - %d", ret); |
| } |
| |
| return ret; |
| } |
| |
| protected: |
| virtual int handleResponse(WifiEvent& reply) { |
| |
| ALOGV("In GetFeatureSetCommand::handleResponse"); |
| |
| if (reply.get_cmd() != NL80211_CMD_VENDOR) { |
| ALOGD("Ignoring reply with cmd = %d", reply.get_cmd()); |
| return NL_SKIP; |
| } |
| |
| int id = reply.get_vendor_id(); |
| int subcmd = reply.get_vendor_subcmd(); |
| |
| nlattr *vendor_data = reply.get_attribute(NL80211_ATTR_VENDOR_DATA); |
| int len = reply.get_vendor_data_len(); |
| |
| ALOGV("Id = %0x, subcmd = %d, len = %d", id, subcmd, len); |
| if (vendor_data == NULL || len == 0) { |
| ALOGE("no vendor data in GetFeatureSetCommand response; ignoring it"); |
| return NL_SKIP; |
| } |
| if(feature_type == FEATURE_SET) { |
| void *data = reply.get_vendor_data(); |
| if(!fset) { |
| ALOGE("Buffers pointers not set"); |
| return NL_SKIP; |
| } |
| memcpy(fset, data, min(len, (int) sizeof(*fset))); |
| } else { |
| int num_features_set = 0; |
| int i = 0; |
| |
| if(!feature_matrix || !fm_size) { |
| ALOGE("Buffers pointers not set"); |
| return NL_SKIP; |
| } |
| |
| for (nl_iterator it(vendor_data); it.has_next(); it.next()) { |
| if (it.get_type() == ANDR_WIFI_ATTRIBUTE_NUM_FEATURE_SET) { |
| num_features_set = it.get_u32(); |
| ALOGV("Got feature list with %d concurrent sets", num_features_set); |
| if(set_size_max && (num_features_set > set_size_max)) |
| num_features_set = set_size_max; |
| *fm_size = num_features_set; |
| } else if ((it.get_type() == ANDR_WIFI_ATTRIBUTE_FEATURE_SET) && |
| i < num_features_set) { |
| feature_matrix[i] = it.get_u32(); |
| i++; |
| } else { |
| ALOGW("Ignoring invalid attribute type = %d, size = %d", |
| it.get_type(), it.get_len()); |
| } |
| } |
| |
| } |
| return NL_OK; |
| } |
| |
| }; |
| |
| static int wifi_get_multicast_id(wifi_handle handle, const char *name, const char *group) |
| { |
| GetMulticastIdCommand cmd(handle, name, group); |
| int res = cmd.requestResponse(); |
| if (res < 0) |
| return res; |
| else |
| return cmd.getId(); |
| } |
| |
| ///////////////////////////////////////////////////////////////////////// |
| |
| static bool is_wifi_interface(const char *name) |
| { |
| if (strncmp(name, "wlan", 4) != 0 && strncmp(name, "p2p", 3) != 0) { |
| /* not a wifi interface; ignore it */ |
| return false; |
| } else { |
| return true; |
| } |
| } |
| |
| static int get_interface(const char *name, interface_info *info) |
| { |
| strcpy(info->name, name); |
| info->id = if_nametoindex(name); |
| // ALOGI("found an interface : %s, id = %d", name, info->id); |
| return WIFI_SUCCESS; |
| } |
| |
| wifi_error wifi_init_interfaces(wifi_handle handle) |
| { |
| hal_info *info = (hal_info *)handle; |
| |
| struct dirent *de; |
| |
| DIR *d = opendir("/sys/class/net"); |
| if (d == 0) |
| return WIFI_ERROR_UNKNOWN; |
| |
| int n = 0; |
| while ((de = readdir(d))) { |
| if (de->d_name[0] == '.') |
| continue; |
| if (is_wifi_interface(de->d_name) ) { |
| n++; |
| } |
| } |
| |
| closedir(d); |
| |
| d = opendir("/sys/class/net"); |
| if (d == 0) |
| return WIFI_ERROR_UNKNOWN; |
| |
| info->interfaces = (interface_info **)malloc(sizeof(interface_info *) * n); |
| |
| int i = 0; |
| while ((de = readdir(d))) { |
| if (de->d_name[0] == '.') |
| continue; |
| if (is_wifi_interface(de->d_name)) { |
| interface_info *ifinfo = (interface_info *)malloc(sizeof(interface_info)); |
| if (get_interface(de->d_name, ifinfo) != WIFI_SUCCESS) { |
| free(ifinfo); |
| continue; |
| } |
| ifinfo->handle = handle; |
| info->interfaces[i] = ifinfo; |
| i++; |
| } |
| } |
| |
| closedir(d); |
| |
| info->num_interfaces = n; |
| return WIFI_SUCCESS; |
| } |
| |
| wifi_error wifi_get_ifaces(wifi_handle handle, int *num, wifi_interface_handle **interfaces) |
| { |
| hal_info *info = (hal_info *)handle; |
| |
| *interfaces = (wifi_interface_handle *)info->interfaces; |
| *num = info->num_interfaces; |
| |
| return WIFI_SUCCESS; |
| } |
| |
| wifi_error wifi_get_iface_name(wifi_interface_handle handle, char *name, size_t size) |
| { |
| interface_info *info = (interface_info *)handle; |
| strcpy(name, info->name); |
| return WIFI_SUCCESS; |
| } |
| |
| wifi_error wifi_get_supported_feature_set(wifi_interface_handle handle, feature_set *set) |
| { |
| GetFeatureSetCommand command(handle, FEATURE_SET, set, NULL, NULL, 1); |
| return (wifi_error) command.requestResponse(); |
| } |
| |
| wifi_error wifi_get_concurrency_matrix(wifi_interface_handle handle, int set_size_max, |
| feature_set set[], int *set_size) |
| { |
| GetFeatureSetCommand command(handle, FEATURE_SET_MATRIX, NULL, set, set_size, set_size_max); |
| return (wifi_error) command.requestResponse(); |
| } |
| |
| wifi_error wifi_set_scanning_mac_oui(wifi_interface_handle handle, oui scan_oui) |
| { |
| SetPnoMacAddrOuiCommand command(handle, scan_oui); |
| return (wifi_error)command.start(); |
| |
| } |
| |
| wifi_error wifi_set_nodfs_flag(wifi_interface_handle handle, u32 nodfs) |
| { |
| SetNodfsCommand command(handle, nodfs); |
| return (wifi_error) command.requestResponse(); |
| } |
| |
| wifi_error wifi_set_country_code(wifi_interface_handle handle, const char *country_code) |
| { |
| SetCountryCodeCommand command(handle, country_code); |
| return (wifi_error) command.requestResponse(); |
| } |
| |
| static wifi_error wifi_start_rssi_monitoring(wifi_request_id id, wifi_interface_handle |
| iface, s8 max_rssi, s8 min_rssi, wifi_rssi_event_handler eh) |
| { |
| ALOGD("Start RSSI monitor %d", id); |
| wifi_handle handle = getWifiHandle(iface); |
| SetRSSIMonitorCommand *cmd = new SetRSSIMonitorCommand(id, iface, max_rssi, min_rssi, eh); |
| wifi_register_cmd(handle, id, cmd); |
| |
| wifi_error result = (wifi_error)cmd->start(); |
| if (result != WIFI_SUCCESS) { |
| wifi_unregister_cmd(handle, id); |
| } |
| return result; |
| } |
| |
| |
| static wifi_error wifi_stop_rssi_monitoring(wifi_request_id id, wifi_interface_handle iface) |
| { |
| ALOGD("Stopping RSSI monitor"); |
| |
| if(id == -1) { |
| wifi_rssi_event_handler handler; |
| s8 max_rssi = 0, min_rssi = 0; |
| wifi_handle handle = getWifiHandle(iface); |
| memset(&handler, 0, sizeof(handler)); |
| SetRSSIMonitorCommand *cmd = new SetRSSIMonitorCommand(id, iface, |
| max_rssi, min_rssi, handler); |
| cmd->cancel(); |
| cmd->releaseRef(); |
| return WIFI_SUCCESS; |
| } |
| return wifi_cancel_cmd(id, iface); |
| } |
| |
| ///////////////////////////////////////////////////////////////////////////// |
