LLCP 1.1 implementation.

Previously, in LLCP v1.0, the only way to use the SDP (Service
Discovery Protocol) service was to send a CONNECT frame containing
the Service Name to the SDP service. This was implicitly
preforming a connection request to the requested service.

LLCP v1.1 introduced a way to discover services more efficiently
and without implicit connection. It also enables connectionless
services to have a service name. It is based on a new protocol
based on a new SNL frame containing discovery requests and
responses.

This update comes with new APIs:
- phLibNfc_Llcp_DiscoverServices() function can be used to discover
remote services. It can take multiple service names and resolve
all of them in a single call.

- Register service name at bind time. Cache LLCP service name/sap pairs.
In LLCP 1.1 specification defines at section 5.9 that any service
lookup answer must be valid for the whole LLCP session duration.
To enforce this, we cache the SAP/SN pairs locally and make sure
that the applications don't break the cache.

The stack remains fully retro-compatible with v1.0 devices.

Change-Id: I052edd3838013cee65e7415d0ed01fc3e9cad36d

1 files changed, 6 insertions, 0 deletions

diff --git a/src/phFriNfc_LlcpUtils.h b/src/phFriNfc_LlcpUtils.h
index a1004a1..9dcb95a 100644
--- a/src/phFriNfc_LlcpUtils.h
+++ b/src/phFriNfc_LlcpUtils.h
@@ -70,6 +70,12 @@ NFCSTATUS phFriNfc_Llcp_EncodeTLV( phNfc_sData_t  *psValueBuffer,
                                    uint8_t        length,
                                    uint8_t        *pValue);
 
+NFCSTATUS phFriNfc_Llcp_AppendTLV( phNfc_sData_t  *psValueBuffer,
+                                   uint32_t       nTlvOffset,
+                                   uint32_t       *pCurrentOffset,
+                                   uint8_t        length,
+                                   uint8_t        *pValue);
+
 void phFriNfc_Llcp_EncodeMIUX(uint16_t pMiux,
                               uint8_t* pMiuxEncoded);