NFC: Add RAW socket type support for SOCKPROTO_RAW

This allows for a more generic NFC sniffing by using SOCKPROTO_RAW
SOCK_RAW to read RAW NFC frames. This is for sniffing anything but LLCP
(HCI, NCI, etc...).

Signed-off-by: Hiren Tandel <hirent@marvell.com>
Signed-off-by: Rahul Tank <rahult@marvell.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

1 files changed, 12 insertions, 4 deletions

diff --git a/include/uapi/linux/nfc.h b/include/uapi/linux/nfc.h
index 9789dc95b6a8..9b19b4461928 100644
--- a/include/uapi/linux/nfc.h
+++ b/include/uapi/linux/nfc.h
@@ -273,11 +273,19 @@ struct sockaddr_nfc_llcp {
  * First byte is the adapter index
  * Second byte contains flags
  *  - 0x01 - Direction (0=RX, 1=TX)
- *  - 0x02-0x80 - Reserved
+ *  - 0x02-0x04 - Payload type (000=LLCP, 001=NCI, 010=HCI, 011=Digital,
+ *                              100=Proprietary)
+ *  - 0x05-0x80 - Reserved
  **/
-#define NFC_LLCP_RAW_HEADER_SIZE        2
-#define NFC_LLCP_DIRECTION_RX           0x00
-#define NFC_LLCP_DIRECTION_TX           0x01
+#define NFC_RAW_HEADER_SIZE     2
+#define NFC_DIRECTION_RX                0x00
+#define NFC_DIRECTION_TX                0x01
+
+#define RAW_PAYLOAD_LLCP 0
+#define RAW_PAYLOAD_NCI 1
+#define RAW_PAYLOAD_HCI 2
+#define RAW_PAYLOAD_DIGITAL     3
+#define RAW_PAYLOAD_PROPRIETARY 4
 
 /* socket option names */
 #define NFC_LLCP_RW             0