1/* 2 * Copyright (C) 2014 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17#include "wifi_hal.h" 18 19#ifndef __WIFI_HAL_COMMON_H__ 20#define __WIFI_HAL_COMMON_H__ 21 22#ifndef LOG_TAG 23#define LOG_TAG "WifiHAL" 24#endif 25 26#include <stdint.h> 27#include <fcntl.h> 28#include <inttypes.h> 29#include <sys/socket.h> 30#include <netlink/genl/genl.h> 31#include <netlink/genl/family.h> 32#include <netlink/genl/ctrl.h> 33#include <linux/rtnetlink.h> 34#include <netpacket/packet.h> 35#include <linux/filter.h> 36#include <linux/errqueue.h> 37 38#include <linux/pkt_sched.h> 39#include <netlink/object-api.h> 40#include <netlink/netlink.h> 41#include <netlink/socket.h> 42#include <netlink-types.h> 43 44#include "nl80211_copy.h" 45 46#include <utils/Log.h> 47#include "rb_wrapper.h" 48#include "pkt_stats.h" 49#include "wifihal_internal.h" 50 51#define SOCKET_BUFFER_SIZE (32768U) 52#define RECV_BUF_SIZE (4096) 53#define DEFAULT_EVENT_CB_SIZE (64) 54#define DEFAULT_CMD_SIZE (64) 55#define NUM_RING_BUFS 5 56 57#define MAC_ADDR_ARRAY(a) (a)[0], (a)[1], (a)[2], (a)[3], (a)[4], (a)[5] 58#define MAC_ADDR_STR "%02x:%02x:%02x:%02x:%02x:%02x" 59#define BIT(x) (1 << (x)) 60 61typedef int16_t s16; 62typedef int32_t s32; 63typedef int64_t s64; 64 65typedef void (*wifi_internal_event_handler) (wifi_handle handle, int events); 66 67class WifiCommand; 68 69typedef struct { 70 int nl_cmd; 71 uint32_t vendor_id; 72 int vendor_subcmd; 73 nl_recvmsg_msg_cb_t cb_func; 74 void *cb_arg; 75} cb_info; 76 77typedef struct { 78 wifi_request_id id; 79 WifiCommand *cmd; 80} cmd_info; 81 82typedef struct { 83 wifi_handle handle; // handle to wifi data 84 char name[IFNAMSIZ+1]; // interface name + trailing null 85 int id; // id to use when talking to driver 86} interface_info; 87 88struct gscan_event_handlers_s; 89 90typedef struct hal_info_s { 91 92 struct nl_sock *cmd_sock; // command socket object 93 struct nl_sock *event_sock; // event socket object 94 struct nl_sock *user_sock; // user socket object 95 int nl80211_family_id; // family id for 80211 driver 96 97 bool in_event_loop; // Indicates that event loop is active 98 bool clean_up; // Indication to clean up the socket 99 100 wifi_internal_event_handler event_handler; // default event handler 101 wifi_cleaned_up_handler cleaned_up_handler; // socket cleaned up handler 102 103 cb_info *event_cb; // event callbacks 104 int num_event_cb; // number of event callbacks 105 int alloc_event_cb; // number of allocated callback objects 106 pthread_mutex_t cb_lock; // mutex for the event_cb access 107 108 cmd_info *cmd; // Outstanding commands 109 int num_cmd; // number of commands 110 int alloc_cmd; // number of commands allocated 111 112 interface_info **interfaces; // array of interfaces 113 int num_interfaces; // number of interfaces 114 115 feature_set supported_feature_set; 116 // add other details 117 int user_sock_arg; 118 struct rb_info rb_infos[NUM_RING_BUFS]; 119 void (*on_ring_buffer_data) (char *ring_name, char *buffer, int buffer_size, 120 wifi_ring_buffer_status *status); 121 void (*on_alert) (wifi_request_id id, char *buffer, int buffer_size, int err_code); 122 struct pkt_stats_s *pkt_stats; 123 124 /* socket pair used to exit from blocking poll*/ 125 int exit_sockets[2]; 126 u32 rx_buf_size_allocated; 127 u32 rx_buf_size_occupied; 128 wifi_ring_buffer_entry *rx_aggr_pkts; 129 rx_aggr_stats aggr_stats; 130 u32 prev_seq_no; 131 // pointer to structure having various gscan_event_handlers 132 struct gscan_event_handlers_s *gscan_handlers; 133 /* mutex for the log_handler access*/ 134 pthread_mutex_t lh_lock; 135 /* mutex for the alert_handler access*/ 136 pthread_mutex_t ah_lock; 137 u32 firmware_bus_max_size; 138 bool fate_monitoring_enabled; 139 packet_fate_monitor_info *pkt_fate_stats; 140 /* mutex for the packet fate stats shared resource protection */ 141 pthread_mutex_t pkt_fate_stats_lock; 142} hal_info; 143 144wifi_error wifi_register_handler(wifi_handle handle, int cmd, nl_recvmsg_msg_cb_t func, void *arg); 145wifi_error wifi_register_vendor_handler(wifi_handle handle, 146 uint32_t id, int subcmd, nl_recvmsg_msg_cb_t func, void *arg); 147 148void wifi_unregister_handler(wifi_handle handle, int cmd); 149void wifi_unregister_vendor_handler(wifi_handle handle, uint32_t id, int subcmd); 150 151wifi_error wifi_register_cmd(wifi_handle handle, int id, WifiCommand *cmd); 152WifiCommand *wifi_unregister_cmd(wifi_handle handle, int id); 153void wifi_unregister_cmd(wifi_handle handle, WifiCommand *cmd); 154 155interface_info *getIfaceInfo(wifi_interface_handle); 156wifi_handle getWifiHandle(wifi_interface_handle handle); 157hal_info *getHalInfo(wifi_handle handle); 158hal_info *getHalInfo(wifi_interface_handle handle); 159wifi_handle getWifiHandle(hal_info *info); 160wifi_interface_handle getIfaceHandle(interface_info *info); 161wifi_error initializeGscanHandlers(hal_info *info); 162wifi_error cleanupGscanHandlers(hal_info *info); 163 164lowi_cb_table_t *getLowiCallbackTable(u32 requested_lowi_capabilities); 165 166wifi_error wifi_start_sending_offloaded_packet(wifi_request_id id, 167 wifi_interface_handle iface, u8 *ip_packet, u16 ip_packet_len, 168 u8 *src_mac_addr, u8 *dst_mac_addr, u32 period_msec); 169wifi_error wifi_stop_sending_offloaded_packet(wifi_request_id id, 170 wifi_interface_handle iface); 171wifi_error wifi_start_rssi_monitoring(wifi_request_id id, wifi_interface_handle 172 iface, s8 max_rssi, s8 min_rssi, wifi_rssi_event_handler eh); 173wifi_error wifi_stop_rssi_monitoring(wifi_request_id id, wifi_interface_handle iface); 174// some common macros 175 176#define min(x, y) ((x) < (y) ? (x) : (y)) 177#define max(x, y) ((x) > (y) ? (x) : (y)) 178 179#define REQUEST_ID_MAX 1000 180#define get_requestid() ((arc4random()%REQUEST_ID_MAX) + 1) 181#define WAIT_TIME_FOR_SET_REG_DOMAIN 50000 182 183#ifdef __cplusplus 184extern "C" 185{ 186#endif /* __cplusplus */ 187void hexdump(void *bytes, u16 len); 188u8 get_rssi(u8 rssi_wo_noise_floor); 189#ifdef __cplusplus 190} 191#endif /* __cplusplus */ 192 193#endif 194 195