L2CAP and SDP Search API for BT profiles (1/2)

Added interface to create SDP records, to allow the upper
layers to set the content of the SDP record, including
both a RCFOMM channel and a l2cap PSM.

Change-Id: I7c47848a10b3d3091afbeadb4de8a8d7ea812288
diff --git a/include/hardware/bt_sock.h b/include/hardware/bt_sock.h
index a4aa046..1c937d8 100644
--- a/include/hardware/bt_sock.h
+++ b/include/hardware/bt_sock.h
@@ -14,13 +14,13 @@
  * limitations under the License.
  */
 
-#ifndef ANDROID_INCLUDE_BT_SOCK_H
-#define ANDROID_INCLUDE_BT_SOCK_H
+#pragma once
 
 __BEGIN_DECLS
 
 #define BTSOCK_FLAG_ENCRYPT 1
 #define BTSOCK_FLAG_AUTH (1 << 1)
+#define BTSOCK_FLAG_NO_SDP (1 << 2)
 
 typedef enum {
     BTSOCK_RFCOMM = 1,
@@ -34,25 +34,37 @@
     bt_bdaddr_t bd_addr;
     int channel;
     int status;
+    
+    // The writer must make writes using a buffer of this maximum size
+    // to avoid loosing data. (L2CAP only)
+    unsigned short max_tx_packet_size;
+ 
+    // The reader must read using a buffer of at least this size to avoid
+    // loosing data. (L2CAP only)
+    unsigned short max_rx_packet_size;
 } __attribute__((packed)) sock_connect_signal_t;
 
 typedef struct {
-
     /** set to size of this struct*/
     size_t          size;
+
     /**
-     * listen to a rfcomm uuid or channel. It returns the socket fd from which
-     * btsock_connect_signal can be read out when a remote device connected
+     * Listen to a RFCOMM UUID or channel. It returns the socket fd from which
+     * btsock_connect_signal can be read out when a remote device connected.
+     * If neither a UUID nor a channel is provided, a channel will be allocated
+     * and a service record can be created providing the channel number to
+     * create_sdp_record(...) in bt_sdp.
      */
-    bt_status_t (*listen)(btsock_type_t type, const char* service_name, const uint8_t* service_uuid, int channel, int* sock_fd, int flags);
-    /*
-     * connect to a rfcomm uuid channel of remote device, It returns the socket fd from which
+    bt_status_t (*listen)(btsock_type_t type, const char* service_name,
+            const uint8_t* service_uuid, int channel, int* sock_fd, int flags);
+
+    /**
+     * Connect to a RFCOMM UUID channel of remote device, It returns the socket fd from which
      * the btsock_connect_signal and a new socket fd to be accepted can be read out when connected
      */
-    bt_status_t (*connect)(const bt_bdaddr_t *bd_addr, btsock_type_t type, const uint8_t* uuid, int channel, int* sock_fd, int flags);
-
+    bt_status_t (*connect)(const bt_bdaddr_t *bd_addr, btsock_type_t type, const uint8_t* uuid,
+            int channel, int* sock_fd, int flags);
 } btsock_interface_t;
 
 __END_DECLS
 
-#endif /* ANDROID_INCLUDE_BT_SOCK_H */