llc: add support for LLC_OPT_PKTINFO

Signed-off-by: Octavian Purdila <opurdila@ixiacom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/net/llc_conn.h b/include/net/llc_conn.h
index e2374e3..fe982fd 100644
--- a/include/net/llc_conn.h
+++ b/include/net/llc_conn.h
@@ -76,6 +76,7 @@
 	u32		    rx_pdu_hdr;	   /* used for saving header of last pdu
 					      received and caused sending FRMR.
 					      Used for resending FRMR */
+	u32		    cmsg_flags;
 };
 
 static inline struct llc_sock *llc_sk(const struct sock *sk)