drivers/staging/rtl8188eu/os_dep/rtw_android.c

   1 /******************************************************************************
   2  *
   3  * Copyright(c) 2007 - 2011 Realtek Corporation. All rights reserved.
   4  *
   5  * This program is free software; you can redistribute it and/or modify it
   6  * under the terms of version 2 of the GNU General Public License as
   7  * published by the Free Software Foundation.
   8  *
   9  * This program is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
  12  * more details.
  13  *
  14  ******************************************************************************/
  15
  16 #include <linux/module.h>
  17 #include <linux/netdevice.h>
  18
  19 #include <rtw_android.h>
  20 #include <osdep_service.h>
  21 #include <rtw_debug.h>
  22 #include <rtw_ioctl_set.h>
  23
  24 static const char *android_wifi_cmd_str[ANDROID_WIFI_CMD_MAX] = {
  25         "START",
  26         "STOP",
  27         "SCAN-ACTIVE",
  28         "SCAN-PASSIVE",
  29         "RSSI",
  30         "LINKSPEED",
  31         "RXFILTER-START",
  32         "RXFILTER-STOP",
  33         "RXFILTER-ADD",
  34         "RXFILTER-REMOVE",
  35         "BTCOEXSCAN-START",
  36         "BTCOEXSCAN-STOP",
  37         "BTCOEXMODE",
  38         "SETSUSPENDOPT",
  39         "P2P_DEV_ADDR",
  40         "SETFWPATH",
  41         "SETBAND",
  42         "GETBAND",
  43         "COUNTRY",
  44         "P2P_SET_NOA",
  45         "P2P_GET_NOA",
  46         "P2P_SET_PS",
  47         "SET_AP_WPS_P2P_IE",
  48         "MACADDR",
  49         "BLOCK",
  50         "WFD-ENABLE",
  51         "WFD-DISABLE",
  52         "WFD-SET-TCPPORT",
  53         "WFD-SET-MAXTPUT",
  54         "WFD-SET-DEVTYPE",
  55 };
  56
  57 struct android_wifi_priv_cmd {
  58         const char __user *buf;
  59         int used_len;
  60         int total_len;
  61 };
  62
  63 /**
  64  * Local (static) functions and variables
  65  */
  66
  67 /* Initialize g_wifi_on to 1 so dhd_bus_start will be called for the first
  68  * time (only) in dhd_open, subsequential wifi on will be handled by
  69  * wl_android_wifi_on
  70  */
  71 static int g_wifi_on = true;
  72
  73 int rtw_android_cmdstr_to_num(char *cmdstr)
  74 {
  75         int cmd_num;
  76
  77         for (cmd_num = 0; cmd_num < ANDROID_WIFI_CMD_MAX; cmd_num++)
  78                 if (0 == strncasecmp(cmdstr, android_wifi_cmd_str[cmd_num],
  79                                   strlen(android_wifi_cmd_str[cmd_num])))
  80                         break;
  81         return cmd_num;
  82 }
  83
  84 static int rtw_android_get_rssi(struct net_device *net, char *command,
  85                                 int total_len)
  86 {
  87         struct adapter *padapter = (struct adapter *)rtw_netdev_priv(net);
  88         struct  mlme_priv       *pmlmepriv = &(padapter->mlmepriv);
  89         struct  wlan_network    *pcur_network = &pmlmepriv->cur_network;
  90         int bytes_written = 0;
  91
  92         if (check_fwstate(pmlmepriv, _FW_LINKED)) {
  93                 bytes_written += snprintf(&command[bytes_written], total_len,
  94                                           "%s rssi %d",
  95                                           pcur_network->network.Ssid.Ssid,
  96                                           padapter->recvpriv.rssi);
  97         }
  98         return bytes_written;
  99 }
 100
 101 static int rtw_android_get_link_speed(struct net_device *net, char *command,
 102                                       int total_len)
 103 {
 104         struct adapter *padapter = (struct adapter *)rtw_netdev_priv(net);
 105         u16 link_speed;
 106
 107         link_speed = rtw_get_cur_max_rate(padapter) / 10;
 108         return snprintf(command, total_len, "LinkSpeed %d",
 109                                  link_speed);
 110 }
 111
 112 static int rtw_android_get_macaddr(struct net_device *net, char *command,
 113                                    int total_len)
 114 {
 115         return snprintf(command, total_len, "Macaddr = %pM",
 116                                  net->dev_addr);
 117 }
 118
 119 static int android_set_cntry(struct net_device *net, char *command,
 120                              int total_len)
 121 {
 122         struct adapter *adapter = (struct adapter *)rtw_netdev_priv(net);
 123         char *country_code = command + strlen(android_wifi_cmd_str[ANDROID_WIFI_CMD_COUNTRY]) + 1;
 124         int ret;
 125
 126         ret = rtw_set_country(adapter, country_code);
 127         return (ret == _SUCCESS) ? 0 : -1;
 128 }
 129
 130 static int android_get_p2p_addr(struct net_device *net, char *command,
 131                                         int total_len)
 132 {
 133         /* We use the same address as our HW MAC address */
 134         memcpy(command, net->dev_addr, ETH_ALEN);
 135         return ETH_ALEN;
 136 }
 137
 138 static int rtw_android_set_block(struct net_device *net, char *command,
 139                                  int total_len)
 140 {
 141         return 0;
 142 }
 143
 144 int rtw_android_priv_cmd(struct net_device *net, struct ifreq *ifr, int cmd)
 145 {
 146         int ret = 0;
 147         char *command;
 148         int cmd_num;
 149         int bytes_written = 0;
 150         struct android_wifi_priv_cmd priv_cmd;
 151
 152         if (!ifr->ifr_data)
 153                 return -EINVAL;
 154         if (copy_from_user(&priv_cmd, ifr->ifr_data, sizeof(priv_cmd)))
 155                 return -EFAULT;
 156         if (priv_cmd.total_len < 1)
 157                 return -EINVAL;
 158         command = memdup_user(priv_cmd.buf, priv_cmd.total_len);
 159         if (IS_ERR(command))
 160                 return PTR_ERR(command);
 161         command[priv_cmd.total_len - 1] = 0;
 162         DBG_88E("%s: Android private cmd \"%s\" on %s\n",
 163                 __func__, command, ifr->ifr_name);
 164         cmd_num = rtw_android_cmdstr_to_num(command);
 165         switch (cmd_num) {
 166         case ANDROID_WIFI_CMD_START:
 167                 goto response;
 168         case ANDROID_WIFI_CMD_SETFWPATH:
 169                 goto response;
 170         }
 171         if (!g_wifi_on) {
 172                 DBG_88E("%s: Ignore private cmd \"%s\" - iface %s is down\n",
 173                         __func__, command, ifr->ifr_name);
 174                 ret = 0;
 175                 goto free;
 176         }
 177         switch (cmd_num) {
 178         case ANDROID_WIFI_CMD_STOP:
 179                 break;
 180         case ANDROID_WIFI_CMD_SCAN_ACTIVE:
 181                 break;
 182         case ANDROID_WIFI_CMD_SCAN_PASSIVE:
 183                 break;
 184         case ANDROID_WIFI_CMD_RSSI:
 185                 bytes_written = rtw_android_get_rssi(net, command,
 186                                                      priv_cmd.total_len);
 187                 break;
 188         case ANDROID_WIFI_CMD_LINKSPEED:
 189                 bytes_written = rtw_android_get_link_speed(net, command,
 190                                                            priv_cmd.total_len);
 191                 break;
 192         case ANDROID_WIFI_CMD_MACADDR:
 193                 bytes_written = rtw_android_get_macaddr(net, command,
 194                                                         priv_cmd.total_len);
 195                 break;
 196         case ANDROID_WIFI_CMD_BLOCK:
 197                 bytes_written = rtw_android_set_block(net, command,
 198                                                       priv_cmd.total_len);
 199                 break;
 200         case ANDROID_WIFI_CMD_RXFILTER_START:
 201                 break;
 202         case ANDROID_WIFI_CMD_RXFILTER_STOP:
 203                 break;
 204         case ANDROID_WIFI_CMD_RXFILTER_ADD:
 205                 break;
 206         case ANDROID_WIFI_CMD_RXFILTER_REMOVE:
 207                 break;
 208         case ANDROID_WIFI_CMD_BTCOEXSCAN_START:
 209                 /* TBD: BTCOEXSCAN-START */
 210                 break;
 211         case ANDROID_WIFI_CMD_BTCOEXSCAN_STOP:
 212                 /* TBD: BTCOEXSCAN-STOP */
 213                 break;
 214         case ANDROID_WIFI_CMD_BTCOEXMODE:
 215                 break;
 216         case ANDROID_WIFI_CMD_SETSUSPENDOPT:
 217                 break;
 218         case ANDROID_WIFI_CMD_SETBAND:
 219                 break;
 220         case ANDROID_WIFI_CMD_GETBAND:
 221                 break;
 222         case ANDROID_WIFI_CMD_COUNTRY:
 223                 bytes_written = android_set_cntry(net, command,
 224                                                   priv_cmd.total_len);
 225                 break;
 226         case ANDROID_WIFI_CMD_P2P_DEV_ADDR:
 227                 bytes_written = android_get_p2p_addr(net, command,
 228                                                      priv_cmd.total_len);
 229                 break;
 230         case ANDROID_WIFI_CMD_P2P_SET_NOA:
 231                 break;
 232         case ANDROID_WIFI_CMD_P2P_GET_NOA:
 233                 break;
 234         case ANDROID_WIFI_CMD_P2P_SET_PS:
 235                 break;
 236         default:
 237                 DBG_88E("Unknown PRIVATE command %s - ignored\n", command);
 238                 snprintf(command, 3, "OK");
 239                 bytes_written = strlen("OK");
 240         }
 241
 242 response:
 243         if (bytes_written >= 0) {
 244                 if ((bytes_written == 0) && (priv_cmd.total_len > 0))
 245                         command[0] = '\0';
 246                 if (bytes_written >= priv_cmd.total_len) {
 247                         DBG_88E("%s: bytes_written = %d\n", __func__,
 248                                 bytes_written);
 249                         bytes_written = priv_cmd.total_len;
 250                 } else {
 251                         bytes_written++;
 252                 }
 253                 priv_cmd.used_len = bytes_written;
 254                 if (copy_to_user((char __user *)priv_cmd.buf, command,
 255                                  bytes_written)) {
 256                         DBG_88E("%s: failed to copy data to user buffer\n",
 257                                 __func__);
 258                         ret = -EFAULT;
 259                 }
 260         } else {
 261                 ret = bytes_written;
 262         }
 263 free:
 264         kfree(command);
 265         return ret;
 266 }