NFC: LLCP raw socket support
This adds support for socket of type SOCK_RAW to LLCP.
sk_buff are copied and sent to raw sockets with a 2 bytes extra header:
The first byte header contains the nfc adapter index.
The second one contains flags:
- 0x01 - Direction (0=RX, 1=TX)
- 0x02-0x80 - Reserved
A raw socket has to be explicitly bound to a nfc adapter. This is achieved
by specifying the adapter index to be bound to in the dev_idx field of the
sockaddr_nfc_llcp struct passed to bind().
Signed-off-by: Thierry Escande <thierry.escande@linux.intel.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
diff --git a/net/nfc/llcp/commands.c b/net/nfc/llcp/commands.c
index b982b5b..c45ccd6 100644
--- a/net/nfc/llcp/commands.c
+++ b/net/nfc/llcp/commands.c
@@ -312,6 +312,8 @@
skb = llcp_add_header(skb, 0, 0, LLCP_PDU_SYMM);
+ nfc_llcp_send_to_raw_sock(local, skb, NFC_LLCP_DIRECTION_TX);
+
return nfc_data_exchange(dev, local->target_idx, skb,
nfc_llcp_recv, local);
}