1 // SPDX-License-Identifier: GPL-2.0
2 /******************************************************************************
3 *
4 * Copyright(c) 2007 - 2011 Realtek Corporation. All rights reserved.
5 *
6 ******************************************************************************/
7
8 #include <linux/module.h>
9 #include <linux/netdevice.h>
10
11 #include <rtw_android.h>
12 #include <osdep_service.h>
13 #include <rtw_debug.h>
14 #include <rtw_ioctl_set.h>
15
16 static const char *android_wifi_cmd_str[ANDROID_WIFI_CMD_MAX] = {
17 "START",
18 "STOP",
19 "SCAN-ACTIVE",
20 "SCAN-PASSIVE",
21 "RSSI",
22 "LINKSPEED",
23 "RXFILTER-START",
24 "RXFILTER-STOP",
25 "RXFILTER-ADD",
26 "RXFILTER-REMOVE",
27 "BTCOEXSCAN-START",
28 "BTCOEXSCAN-STOP",
29 "BTCOEXMODE",
30 "SETSUSPENDOPT",
31 "P2P_DEV_ADDR",
32 "SETFWPATH",
33 "SETBAND",
34 "GETBAND",
35 "COUNTRY",
36 "P2P_SET_NOA",
37 "P2P_GET_NOA",
38 "P2P_SET_PS",
39 "SET_AP_WPS_P2P_IE",
40 "MACADDR",
41 "BLOCK",
42 "WFD-ENABLE",
43 "WFD-DISABLE",
44 "WFD-SET-TCPPORT",
45 "WFD-SET-MAXTPUT",
46 "WFD-SET-DEVTYPE",
47 };
48
49 struct android_wifi_priv_cmd {
50 const char __user *buf;
51 int used_len;
52 int total_len;
53 };
54
55 /**
56 * Local (static) functions and variables
57 */
58
59 /* Initialize g_wifi_on to 1 so dhd_bus_start will be called for the first
60 * time (only) in dhd_open, subsequential wifi on will be handled by
61 * wl_android_wifi_on
62 */
63 static int g_wifi_on = true;
64
rtw_android_cmdstr_to_num(char * cmdstr)65 int rtw_android_cmdstr_to_num(char *cmdstr)
66 {
67 int cmd_num;
68
69 for (cmd_num = 0; cmd_num < ANDROID_WIFI_CMD_MAX; cmd_num++)
70 if (!strncasecmp(cmdstr, android_wifi_cmd_str[cmd_num],
71 strlen(android_wifi_cmd_str[cmd_num])))
72 break;
73 return cmd_num;
74 }
75
rtw_android_get_rssi(struct net_device * net,char * command,int total_len)76 static int rtw_android_get_rssi(struct net_device *net, char *command,
77 int total_len)
78 {
79 struct adapter *padapter = rtw_netdev_priv(net);
80 struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
81 struct wlan_network *pcur_network = &pmlmepriv->cur_network;
82 int bytes_written = 0;
83
84 if (check_fwstate(pmlmepriv, _FW_LINKED)) {
85 bytes_written += snprintf(&command[bytes_written], total_len,
86 "%s rssi %d",
87 pcur_network->network.ssid.ssid,
88 padapter->recvpriv.rssi);
89 }
90 return bytes_written;
91 }
92
rtw_android_get_link_speed(struct net_device * net,char * command,int total_len)93 static int rtw_android_get_link_speed(struct net_device *net, char *command,
94 int total_len)
95 {
96 struct adapter *padapter = rtw_netdev_priv(net);
97 u16 link_speed;
98
99 link_speed = rtw_get_cur_max_rate(padapter) / 10;
100 return snprintf(command, total_len, "LinkSpeed %d",
101 link_speed);
102 }
103
rtw_android_get_macaddr(struct net_device * net,char * command,int total_len)104 static int rtw_android_get_macaddr(struct net_device *net, char *command,
105 int total_len)
106 {
107 return snprintf(command, total_len, "Macaddr = %pM",
108 net->dev_addr);
109 }
110
android_set_cntry(struct net_device * net,char * command,int total_len)111 static int android_set_cntry(struct net_device *net, char *command,
112 int total_len)
113 {
114 struct adapter *adapter = rtw_netdev_priv(net);
115 char *country_code = command + strlen(android_wifi_cmd_str[ANDROID_WIFI_CMD_COUNTRY]) + 1;
116 int ret;
117
118 ret = rtw_set_country(adapter, country_code);
119 return (ret == _SUCCESS) ? 0 : -1;
120 }
121
android_get_p2p_addr(struct net_device * net,char * command,int total_len)122 static int android_get_p2p_addr(struct net_device *net, char *command,
123 int total_len)
124 {
125 /* We use the same address as our HW MAC address */
126 memcpy(command, net->dev_addr, ETH_ALEN);
127 return ETH_ALEN;
128 }
129
rtw_android_priv_cmd(struct net_device * net,struct ifreq * ifr,int cmd)130 int rtw_android_priv_cmd(struct net_device *net, struct ifreq *ifr, int cmd)
131 {
132 int ret = 0;
133 char *command;
134 int cmd_num;
135 int bytes_written = 0;
136 struct android_wifi_priv_cmd priv_cmd;
137
138 if (!ifr->ifr_data)
139 return -EINVAL;
140 if (copy_from_user(&priv_cmd, ifr->ifr_data, sizeof(priv_cmd)))
141 return -EFAULT;
142 if (priv_cmd.total_len < 1)
143 return -EINVAL;
144 command = memdup_user(priv_cmd.buf, priv_cmd.total_len);
145 if (IS_ERR(command))
146 return PTR_ERR(command);
147 command[priv_cmd.total_len - 1] = 0;
148 DBG_88E("%s: Android private cmd \"%s\" on %s\n",
149 __func__, command, ifr->ifr_name);
150 cmd_num = rtw_android_cmdstr_to_num(command);
151 switch (cmd_num) {
152 case ANDROID_WIFI_CMD_START:
153 goto response;
154 case ANDROID_WIFI_CMD_SETFWPATH:
155 goto response;
156 }
157 if (!g_wifi_on) {
158 DBG_88E("%s: Ignore private cmd \"%s\" - iface %s is down\n",
159 __func__, command, ifr->ifr_name);
160 ret = 0;
161 goto free;
162 }
163 switch (cmd_num) {
164 case ANDROID_WIFI_CMD_STOP:
165 break;
166 case ANDROID_WIFI_CMD_SCAN_ACTIVE:
167 break;
168 case ANDROID_WIFI_CMD_SCAN_PASSIVE:
169 break;
170 case ANDROID_WIFI_CMD_RSSI:
171 bytes_written = rtw_android_get_rssi(net, command,
172 priv_cmd.total_len);
173 break;
174 case ANDROID_WIFI_CMD_LINKSPEED:
175 bytes_written = rtw_android_get_link_speed(net, command,
176 priv_cmd.total_len);
177 break;
178 case ANDROID_WIFI_CMD_MACADDR:
179 bytes_written = rtw_android_get_macaddr(net, command,
180 priv_cmd.total_len);
181 break;
182 case ANDROID_WIFI_CMD_BLOCK:
183 break;
184 case ANDROID_WIFI_CMD_RXFILTER_START:
185 break;
186 case ANDROID_WIFI_CMD_RXFILTER_STOP:
187 break;
188 case ANDROID_WIFI_CMD_RXFILTER_ADD:
189 break;
190 case ANDROID_WIFI_CMD_RXFILTER_REMOVE:
191 break;
192 case ANDROID_WIFI_CMD_BTCOEXSCAN_START:
193 /* TBD: BTCOEXSCAN-START */
194 break;
195 case ANDROID_WIFI_CMD_BTCOEXSCAN_STOP:
196 /* TBD: BTCOEXSCAN-STOP */
197 break;
198 case ANDROID_WIFI_CMD_BTCOEXMODE:
199 break;
200 case ANDROID_WIFI_CMD_SETSUSPENDOPT:
201 break;
202 case ANDROID_WIFI_CMD_SETBAND:
203 break;
204 case ANDROID_WIFI_CMD_GETBAND:
205 break;
206 case ANDROID_WIFI_CMD_COUNTRY:
207 bytes_written = android_set_cntry(net, command,
208 priv_cmd.total_len);
209 break;
210 case ANDROID_WIFI_CMD_P2P_DEV_ADDR:
211 bytes_written = android_get_p2p_addr(net, command,
212 priv_cmd.total_len);
213 break;
214 case ANDROID_WIFI_CMD_P2P_SET_NOA:
215 break;
216 case ANDROID_WIFI_CMD_P2P_GET_NOA:
217 break;
218 case ANDROID_WIFI_CMD_P2P_SET_PS:
219 break;
220 default:
221 DBG_88E("Unknown PRIVATE command %s - ignored\n", command);
222 snprintf(command, 3, "OK");
223 bytes_written = strlen("OK");
224 }
225
226 response:
227 if (bytes_written >= 0) {
228 if ((bytes_written == 0) && (priv_cmd.total_len > 0))
229 command[0] = '\0';
230 if (bytes_written >= priv_cmd.total_len) {
231 DBG_88E("%s: bytes_written = %d\n", __func__,
232 bytes_written);
233 bytes_written = priv_cmd.total_len;
234 } else {
235 bytes_written++;
236 }
237 priv_cmd.used_len = bytes_written;
238 if (copy_to_user((char __user *)priv_cmd.buf, command,
239 bytes_written)) {
240 DBG_88E("%s: failed to copy data to user buffer\n",
241 __func__);
242 ret = -EFAULT;
243 }
244 } else {
245 ret = bytes_written;
246 }
247 free:
248 kfree(command);
249 return ret;
250 }
251