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 * You should have received a copy of the GNU General Public License along with 15 * this program; if not, write to the Free Software Foundation, Inc., 16 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA 17 * 18 * 19 ******************************************************************************/ 20 21#include <linux/module.h> 22#include <linux/netdevice.h> 23 24#include <rtw_android.h> 25#include <osdep_service.h> 26#include <rtw_debug.h> 27#include <rtw_ioctl_set.h> 28 29static const char *android_wifi_cmd_str[ANDROID_WIFI_CMD_MAX] = { 30 "START", 31 "STOP", 32 "SCAN-ACTIVE", 33 "SCAN-PASSIVE", 34 "RSSI", 35 "LINKSPEED", 36 "RXFILTER-START", 37 "RXFILTER-STOP", 38 "RXFILTER-ADD", 39 "RXFILTER-REMOVE", 40 "BTCOEXSCAN-START", 41 "BTCOEXSCAN-STOP", 42 "BTCOEXMODE", 43 "SETSUSPENDOPT", 44 "P2P_DEV_ADDR", 45 "SETFWPATH", 46 "SETBAND", 47 "GETBAND", 48 "COUNTRY", 49 "P2P_SET_NOA", 50 "P2P_GET_NOA", 51 "P2P_SET_PS", 52 "SET_AP_WPS_P2P_IE", 53 "MACADDR", 54 "BLOCK", 55 "WFD-ENABLE", 56 "WFD-DISABLE", 57 "WFD-SET-TCPPORT", 58 "WFD-SET-MAXTPUT", 59 "WFD-SET-DEVTYPE", 60}; 61 62struct android_wifi_priv_cmd { 63 const char __user *buf; 64 int used_len; 65 int total_len; 66}; 67 68/** 69 * Local (static) functions and variables 70 */ 71 72/* Initialize g_wifi_on to 1 so dhd_bus_start will be called for the first 73 * time (only) in dhd_open, subsequential wifi on will be handled by 74 * wl_android_wifi_on 75 */ 76static int g_wifi_on = true; 77 78int rtw_android_cmdstr_to_num(char *cmdstr) 79{ 80 int cmd_num; 81 for (cmd_num = 0; cmd_num < ANDROID_WIFI_CMD_MAX; cmd_num++) 82 if (0 == strncasecmp(cmdstr , android_wifi_cmd_str[cmd_num], 83 strlen(android_wifi_cmd_str[cmd_num]))) 84 break; 85 return cmd_num; 86} 87 88static int rtw_android_get_rssi(struct net_device *net, char *command, 89 int total_len) 90{ 91 struct adapter *padapter = (struct adapter *)rtw_netdev_priv(net); 92 struct mlme_priv *pmlmepriv = &(padapter->mlmepriv); 93 struct wlan_network *pcur_network = &pmlmepriv->cur_network; 94 int bytes_written = 0; 95 96 if (check_fwstate(pmlmepriv, _FW_LINKED)) { 97 bytes_written += snprintf(&command[bytes_written], total_len, 98 "%s rssi %d", 99 pcur_network->network.Ssid.Ssid, 100 padapter->recvpriv.rssi); 101 } 102 return bytes_written; 103} 104 105static int rtw_android_get_link_speed(struct net_device *net, char *command, 106 int total_len) 107{ 108 struct adapter *padapter = (struct adapter *)rtw_netdev_priv(net); 109 u16 link_speed; 110 111 link_speed = rtw_get_cur_max_rate(padapter) / 10; 112 return snprintf(command, total_len, "LinkSpeed %d", 113 link_speed); 114} 115 116static int rtw_android_get_macaddr(struct net_device *net, char *command, 117 int total_len) 118{ 119 return snprintf(command, total_len, "Macaddr = %pM", 120 net->dev_addr); 121} 122 123static int android_set_cntry(struct net_device *net, char *command, 124 int total_len) 125{ 126 struct adapter *adapter = (struct adapter *)rtw_netdev_priv(net); 127 char *country_code = command + strlen(android_wifi_cmd_str[ANDROID_WIFI_CMD_COUNTRY]) + 1; 128 int ret; 129 130 ret = rtw_set_country(adapter, country_code); 131 return (ret == _SUCCESS) ? 0 : -1; 132} 133 134static int android_get_p2p_addr(struct net_device *net, char *command, 135 int total_len) 136{ 137 /* We use the same address as our HW MAC address */ 138 memcpy(command, net->dev_addr, ETH_ALEN); 139 return ETH_ALEN; 140} 141 142static int rtw_android_set_block(struct net_device *net, char *command, 143 int total_len) 144{ 145 return 0; 146} 147 148int rtw_android_priv_cmd(struct net_device *net, struct ifreq *ifr, int cmd) 149{ 150 int ret = 0; 151 char *command = NULL; 152 int cmd_num; 153 int bytes_written = 0; 154 struct android_wifi_priv_cmd priv_cmd; 155 156 if (!ifr->ifr_data) { 157 ret = -EINVAL; 158 goto exit; 159 } 160 if (copy_from_user(&priv_cmd, ifr->ifr_data, 161 sizeof(struct android_wifi_priv_cmd))) { 162 ret = -EFAULT; 163 goto exit; 164 } 165 command = kmalloc(priv_cmd.total_len, GFP_KERNEL); 166 if (!command) { 167 DBG_88E("%s: failed to allocate memory\n", __func__); 168 ret = -ENOMEM; 169 goto exit; 170 } 171 if (!access_ok(VERIFY_READ, priv_cmd.buf, priv_cmd.total_len)) { 172 DBG_88E("%s: failed to access memory\n", __func__); 173 ret = -EFAULT; 174 goto exit; 175 } 176 if (copy_from_user(command, (char __user *)priv_cmd.buf, 177 priv_cmd.total_len)) { 178 ret = -EFAULT; 179 goto exit; 180 } 181 DBG_88E("%s: Android private cmd \"%s\" on %s\n", 182 __func__, command, ifr->ifr_name); 183 cmd_num = rtw_android_cmdstr_to_num(command); 184 switch (cmd_num) { 185 case ANDROID_WIFI_CMD_START: 186 goto response; 187 case ANDROID_WIFI_CMD_SETFWPATH: 188 goto response; 189 } 190 if (!g_wifi_on) { 191 DBG_88E("%s: Ignore private cmd \"%s\" - iface %s is down\n", 192 __func__, command, ifr->ifr_name); 193 ret = 0; 194 goto exit; 195 } 196 switch (cmd_num) { 197 case ANDROID_WIFI_CMD_STOP: 198 break; 199 case ANDROID_WIFI_CMD_SCAN_ACTIVE: 200 break; 201 case ANDROID_WIFI_CMD_SCAN_PASSIVE: 202 break; 203 case ANDROID_WIFI_CMD_RSSI: 204 bytes_written = rtw_android_get_rssi(net, command, 205 priv_cmd.total_len); 206 break; 207 case ANDROID_WIFI_CMD_LINKSPEED: 208 bytes_written = rtw_android_get_link_speed(net, command, 209 priv_cmd.total_len); 210 break; 211 case ANDROID_WIFI_CMD_MACADDR: 212 bytes_written = rtw_android_get_macaddr(net, command, 213 priv_cmd.total_len); 214 break; 215 case ANDROID_WIFI_CMD_BLOCK: 216 bytes_written = rtw_android_set_block(net, command, 217 priv_cmd.total_len); 218 break; 219 case ANDROID_WIFI_CMD_RXFILTER_START: 220 break; 221 case ANDROID_WIFI_CMD_RXFILTER_STOP: 222 break; 223 case ANDROID_WIFI_CMD_RXFILTER_ADD: 224 break; 225 case ANDROID_WIFI_CMD_RXFILTER_REMOVE: 226 break; 227 case ANDROID_WIFI_CMD_BTCOEXSCAN_START: 228 /* TBD: BTCOEXSCAN-START */ 229 break; 230 case ANDROID_WIFI_CMD_BTCOEXSCAN_STOP: 231 /* TBD: BTCOEXSCAN-STOP */ 232 break; 233 case ANDROID_WIFI_CMD_BTCOEXMODE: 234 break; 235 case ANDROID_WIFI_CMD_SETSUSPENDOPT: 236 break; 237 case ANDROID_WIFI_CMD_SETBAND: 238 break; 239 case ANDROID_WIFI_CMD_GETBAND: 240 break; 241 case ANDROID_WIFI_CMD_COUNTRY: 242 bytes_written = android_set_cntry(net, command, 243 priv_cmd.total_len); 244 break; 245 case ANDROID_WIFI_CMD_P2P_DEV_ADDR: 246 bytes_written = android_get_p2p_addr(net, command, 247 priv_cmd.total_len); 248 break; 249 case ANDROID_WIFI_CMD_P2P_SET_NOA: 250 break; 251 case ANDROID_WIFI_CMD_P2P_GET_NOA: 252 break; 253 case ANDROID_WIFI_CMD_P2P_SET_PS: 254 break; 255 default: 256 DBG_88E("Unknown PRIVATE command %s - ignored\n", command); 257 snprintf(command, 3, "OK"); 258 bytes_written = strlen("OK"); 259 } 260 261response: 262 if (bytes_written >= 0) { 263 if ((bytes_written == 0) && (priv_cmd.total_len > 0)) 264 command[0] = '\0'; 265 if (bytes_written >= priv_cmd.total_len) { 266 DBG_88E("%s: bytes_written = %d\n", __func__, 267 bytes_written); 268 bytes_written = priv_cmd.total_len; 269 } else { 270 bytes_written++; 271 } 272 priv_cmd.used_len = bytes_written; 273 if (copy_to_user((char __user *)priv_cmd.buf, command, 274 bytes_written)) { 275 DBG_88E("%s: failed to copy data to user buffer\n", 276 __func__); 277 ret = -EFAULT; 278 } 279 } else { 280 ret = bytes_written; 281 } 282exit: 283 kfree(command); 284 return ret; 285} 286