include/nuttx/wireless and wireless/bluetooth: Add support for an IOCTL command to enable Bluetooth security.

include/nuttx/wireless/bt_ioctl.h

@@ -58,7 +58,7 @@
 
 /* Bluetooth network device IOCTL commands. */
 
-#ifndef WL_BLUETOOTHCMDS != 14
+#ifndef WL_BLUETOOTHCMDS != 15
 #  error Incorrect setting for number of Bluetooth IOCTL commands
 #endif
 
@@ -91,6 +91,9 @@
  *   Read device statistics.
  * SIOCZBTSTATS
  *   Read device statistics, and zero them.
+ *
+ * NOTE: These are here for reference.  None of the NetBSD IOCTL commands
+ * have been implemented in NuttX.
  */
 
 #define SIOCGBTINFO            _WLIOC(WL_BLUETOOTHFIRST + 0)
@@ -152,6 +155,15 @@
 
 #define SIOCBT_SCANSTOP        _WLIOC(WL_BLUETOOTHFIRST + 13)
 
+/* SIOCBT_SECURITY
+ *   Description:   Enable security for a connection.
+ *   Input:         A reference to a write-able instance of struct
+ *                  bt_security_s.
+ *   Output:        None
+ */
+
+#define SIOCBT_SECURITY        _WLIOC(WL_BLUETOOTHFIRST + 14)
+
 /* Definitions associated with struct btreg_s *******************************/
 /* struct btreq_s union field accessors */
 
@@ -292,6 +304,15 @@ struct bt_scanresult_s
   (sizeof(struct bt_scanresult_s) + \
    ((n) - 1) * sizeof(struct bt_scanresponse_s))
 
+/* Read-only data that accompanies the SIOCBT_SECURITY IOCTL command */
+
+struct bt_security_s
+{
+  char se_name[HCI_DEVNAME_SIZE];   /* Device name */
+  bt_addr_le_t se_addr;             /* BLE address */
+  enum bt_security_e se_level;      /* Security level */
+};
+
 /****************************************************************************
  * Public Function Prototypes
  ****************************************************************************/

include/nuttx/wireless/wireless.h

@@ -162,7 +162,7 @@
 /* Reserved for Bluetooth network devices (see bt_ioctls.h) */
 
 #define WL_BLUETOOTHFIRST     (WL_NETFIRST + WL_NNETCMDS)
-#define WL_BLUETOOTHCMDS      (14)
+#define WL_BLUETOOTHCMDS      (15)
 #define WL_IBLUETOOTHCMD(cmd) (_WLIOCVALID(cmd) && \
                               _IOC_NR(cmd) >= WL_BLUETOOTHFIRST && \
                               _IOC_NR(cmd) < (WL_BLUETOOTHFIRST + WL_BLUETOOTHCMDS))

wireless/bluetooth/bt_ioctl.c

@@ -52,6 +52,7 @@
 #include <nuttx/wireless/bt_ioctl.h>
 
 #include "bt_hcicore.h"
+#include "bt_conn.h"
 #include "bt_ioctl.h"
 
 #ifdef CONFIG_NETDEV_IOCTL  /* Not optional! */
@@ -216,7 +217,7 @@ static int btnet_scan_result(FAR struct bt_scanresult_s *result)
 
   head   = g_scanstate.bs_head;
   tail   = g_scanstate.bs_tail;
-  maxrsp = result->sc_nrsp;
+  maxrsp = result->sr_nrsp;
 
   for (nrsp = 0; nrsp < maxrsp && head != tail; nrsp++)
     {
@@ -226,7 +227,7 @@ static int btnet_scan_result(FAR struct bt_scanresult_s *result)
       /* Copy data from the head index into the user buffer */
 
       src  = (FAR const uint8_t *)&g_scanstate.bs_rsp[head];
-      dest = (FAR uint8_t *)&result->sc_rsp[nrsp];
+      dest = (FAR uint8_t *)&result->sr_rsp[nrsp];
       memcpy(dest, src, sizeof(struct bt_scanresponse_s));
 
       /* Increment the head index */
@@ -238,7 +239,7 @@ static int btnet_scan_result(FAR struct bt_scanresult_s *result)
     }
 
   g_scanstate.bs_head = head;
-  result->sc_nrsp     = nrsp;
+  result->sr_nrsp     = nrsp;
   nxsem_post(&g_scanstate.bs_exclsem);
   return OK;
 }
@@ -403,6 +404,48 @@ int btnet_ioctl(FAR struct net_driver_s *dev, int cmd, unsigned long arg)
         }
         break;
 
+      /* SIOCBT_SECURITY
+       *   Description:   Enable security for a connection.
+       *   Input:         A reference to a write-able instance of struct
+       *                  bt_security_s.
+       *   Output:        None
+       */
+
+      case SIOCBT_SECURITY:
+        {
+          FAR struct bt_security_s *sec =
+            (FAR struct bt_security_s *)((uintptr_t)arg);
+
+          if (sec == NULL)
+            {
+              ret = -EINVAL;
+            }
+          else
+            {
+              FAR struct bt_conn_s *conn;
+
+              /* Get the connection associated with the provided LE address */
+
+              conn = bt_conn_lookup_addr_le(&sec->se_addr);
+              if (conn == NULL)
+                {
+                  wlwarn("WARNING:  Peer not connected\n");
+                  ret = -ENOTCONN;
+                }
+              else
+                {
+                  ret = bt_conn_security(conn, sec->se_level);
+                  if (ret < 0)
+                    {
+                      wlerr("ERROR:  Security setting failed: %d\n", ret);
+                    }
+
+                  bt_conn_release(conn);
+                }
+            }
+        }
+        break;
+
       default:
         wlwarn("WARNING: Unrecognized IOCTL command: %02x\n", cmd);
         ret = -ENOTTY;