dccp ccid-2: Use u32 timestamps uniformly

Since CCID-2 is de facto a mini implementation of TCP, it makes sense to share
as much code as possible.

Hence this patch aligns CCID-2 timestamping with TCP timestamping.
This also halves the space consumption (on 64-bit systems).

The necessary include file <net/tcp.h> is already included by way of
net/dccp.h. Redundant includes have been removed.

Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 10 insertions, 5 deletions

diff --git a/net/dccp/ccids/ccid2.h b/net/dccp/ccids/ccid2.h
index b017843ba44d..9731c2dc1487 100644
--- a/net/dccp/ccids/ccid2.h
+++ b/net/dccp/ccids/ccid2.h
@@ -18,18 +18,23 @@
 #ifndef _DCCP_CCID2_H_
 #define _DCCP_CCID2_H_
 
-#include <linux/dccp.h>
 #include <linux/timer.h>
 #include <linux/types.h>
 #include "../ccid.h"
+#include "../dccp.h"
+
+/*
+ * CCID-2 timestamping faces the same issues as TCP timestamping.
+ * Hence we reuse/share as much of the code as possible.
+ */
+#define ccid2_time_stamp        tcp_time_stamp
+
 /* NUMDUPACK parameter from RFC 4341, p. 6 */
 #define NUMDUPACK       3
 
-struct sock;
-
 struct ccid2_seq {
         u64                     ccid2s_seq;
-        unsigned long           ccid2s_sent;
+        u32                     ccid2s_sent;
         int                     ccid2s_acked;
         struct ccid2_seq        *ccid2s_prev;
         struct ccid2_seq        *ccid2s_next;
@@ -72,7 +77,7 @@ struct ccid2_hc_tx_sock {
 
         u64                     tx_rpseq;
         int                     tx_rpdupack;
-        unsigned long           tx_last_cong;
+        u32                     tx_last_cong;
         u64                     tx_high_ack;
 };