+
+//#define ENABLE_WIFI_RAND_MAC
+#ifdef ENABLE_WIFI_RAND_MAC
+#define WIFI_RAND_MAC_FILE "/data/misc/wifi_rand_mac"
+static int rockchip_wifi_rand_mac_addr(unsigned char *buf)
+{
+ struct file *fp;
+ loff_t pos;
+ mm_segment_t fs;
+ char mac_buf[20] = {0};
+
+ LOG("%s\n", __func__);
+ fp = filp_open(WIFI_RAND_MAC_FILE, O_RDONLY, 0);
+ if (fp == NULL || IS_ERR(fp)) {
+ fp = filp_open(WIFI_RAND_MAC_FILE, O_RDWR | O_CREAT, 0644);
+ if (fp == NULL || IS_ERR(fp)) {
+ LOG("%s: create %s failed.\n", __func__, WIFI_RAND_MAC_FILE);
+ return -1;
+ }
+ fs = get_fs();
+ set_fs(KERNEL_DS);
+ random_ether_addr(wifi_custom_mac_addr);
+ pos = 0;
+ vfs_write(fp, wifi_custom_mac_addr, 6, &pos);
+ filp_close(fp, NULL);
+ } else {
+ fs = get_fs();
+ set_fs(KERNEL_DS);
+ pos = 0;
+ vfs_read(fp, wifi_custom_mac_addr, 6, &pos);
+ filp_close(fp, NULL);
+ }
+ sprintf(mac_buf,"%02x:%02x:%02x:%02x:%02x:%02x",wifi_custom_mac_addr[0],wifi_custom_mac_addr[1],
+ wifi_custom_mac_addr[2],wifi_custom_mac_addr[3],wifi_custom_mac_addr[4],wifi_custom_mac_addr[5]);
+ LOG("random wifi_custom_mac_addr=[%s]\n", mac_buf);
+ return 0;
+}
+#endif
+