NFC: Initial LLCP support
This patch is an initial implementation for the NFC Logical Link Control
protocol. It's also known as NFC peer to peer mode.
This is a basic implementation as it lacks SDP (services Discovery
Protocol), frames aggregation support, and frame rejecion parsing.
Follow up patches will implement those missing features.
This code has been tested against a Nexus S phone implementing LLCP 1.0.
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/include/linux/nfc.h b/include/linux/nfc.h
index 34d8303..89fee4a 100644
--- a/include/linux/nfc.h
+++ b/include/linux/nfc.h
@@ -139,9 +139,22 @@
__u32 nfc_protocol;
};
+#define NFC_LLCP_MAX_SERVICE_NAME 63
+struct sockaddr_nfc_llcp {
+ sa_family_t sa_family;
+ __u32 dev_idx;
+ __u32 target_idx;
+ __u32 nfc_protocol;
+ __u8 dsap; /* Destination SAP, if known */
+ __u8 ssap; /* Source SAP to be bound to */
+ char service_name[NFC_LLCP_MAX_SERVICE_NAME]; /* Service name URI */;
+ size_t service_name_len;
+};
+
/* NFC socket protocols */
#define NFC_SOCKPROTO_RAW 0
-#define NFC_SOCKPROTO_MAX 1
+#define NFC_SOCKPROTO_LLCP 1
+#define NFC_SOCKPROTO_MAX 2
#define NFC_HEADER_SIZE 1