SCTP: API to delete a sub-connection

This patch adds an API to delete a sub-connection following a SRC/DST IP
mapping as required by the RFC4960.

Change-Id: I7673dd07352557442ffeed6c6c00da274b24953d
Signed-off-by: Marco Varlese <marco.varlese@suse.com>
diff --git a/src/vnet/sctp/sctp.h b/src/vnet/sctp/sctp.h
index 487ff9e..9f17e53 100644
--- a/src/vnet/sctp/sctp.h
+++ b/src/vnet/sctp/sctp.h
@@ -254,6 +254,14 @@
 			     ip6_address_t * lcl_addr,
 			     ip6_address_t * rmt_addr);
 
+u8
+sctp_sub_connection_del_ip4 (ip4_address_t * lcl_addr,
+			     ip4_address_t * rmt_addr);
+
+u8
+sctp_sub_connection_del_ip6 (ip6_address_t * lcl_addr,
+			     ip6_address_t * rmt_addr);
+
 void sctp_connection_close (sctp_connection_t * sctp_conn);
 void sctp_connection_cleanup (sctp_connection_t * sctp_conn);
 void sctp_connection_del (sctp_connection_t * sctp_conn);