[DCCP] ccid2: Allow window to grow larger

Now that we can stuff bigger ack vectors into options.
Signed-off-by: Andrea Bittau <a.bittau@cs.ucl.ac.uk>
Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>

net/dccp/ccids/ccid2.h

@@ -35,7 +35,7 @@ struct ccid2_seq {
 	struct ccid2_seq	*ccid2s_next;
 };
 
-#define CCID2_SEQBUF_LEN 256
+#define CCID2_SEQBUF_LEN 1024
 #define CCID2_SEQBUF_MAX 128
 
 /** struct ccid2_hc_tx_sock - CCID2 TX half connection