tcp: cleanup connections if handshake fails

Change-Id: If109d6772cbd58f4f2a56ae7ec593639d1fa1b96
Signed-off-by: Florin Coras <fcoras@cisco.com>
diff --git a/src/vnet/tcp/tcp_input.c b/src/vnet/tcp/tcp_input.c
index f0ae8b1..91876fe 100644
--- a/src/vnet/tcp/tcp_input.c
+++ b/src/vnet/tcp/tcp_input.c
@@ -2720,8 +2720,7 @@
 	   */
 	  if (!tcp_rcv_ack_is_acceptable (tc0, b0))
 	    {
-	      TCP_DBG ("connection not accepted");
-	      tcp_send_reset_w_pkt (tc0, b0, is_ip4);
+	      tcp_connection_reset (tc0);
 	      error0 = TCP_ERROR_ACK_INVALID;
 	      goto drop;
 	    }
@@ -2729,8 +2728,8 @@
 	  /* Make sure the ack is exactly right */
 	  if (tc0->rcv_nxt != vnet_buffer (b0)->tcp.seq_number || is_fin0)
 	    {
+	      tcp_connection_reset (tc0);
 	      error0 = TCP_ERROR_SEGMENT_INVALID;
-	      tcp_send_reset_w_pkt (tc0, b0, is_ip4);
 	      goto drop;
 	    }