tcp: add counter for accepted connections

Type: improvement

Signed-off-by: Florin Coras <fcoras@cisco.com>
Change-Id: I2925134cfcfa36c14b3b69efa892b9b96fce2e6f
diff --git a/src/vnet/tcp/tcp_input.c b/src/vnet/tcp/tcp_input.c
index 88ae0a3..c069a9b 100644
--- a/src/vnet/tcp/tcp_input.c
+++ b/src/vnet/tcp/tcp_input.c
@@ -2152,7 +2152,7 @@
 	      tcp_connection_cleanup (tc);
 	      goto drop;
 	    }
-	  error = TCP_ERROR_ACK_OK;
+	  error = TCP_ERROR_CONN_ACCEPTED;
 	  break;
 	case TCP_STATE_ESTABLISHED:
 	  /* We can get packets in established state here because they