[DCCP] CCID2: Fix jiffie wrap issues
Jiffies are now handled correctly (I hope) in CCID2. If they wrap, no
problem.
Signed-off-by: Andrea Bittau <a.bittau@cs.ucl.ac.uk>
Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/dccp/ccids/ccid2.c b/net/dccp/ccids/ccid2.c
index b1d90c0..54a6b7e 100644
--- a/net/dccp/ccids/ccid2.c
+++ b/net/dccp/ccids/ccid2.c
@@ -27,7 +27,6 @@
*
* BUGS:
* - sequence number wrapping
- * - jiffies wrapping
*/
#include "../ccid.h"
@@ -71,7 +70,8 @@
/* packets are sent sequentially */
BUG_ON(seqp->ccid2s_seq <= prev->ccid2s_seq);
- BUG_ON(seqp->ccid2s_sent < prev->ccid2s_sent);
+ BUG_ON(time_before(seqp->ccid2s_sent,
+ prev->ccid2s_sent));
BUG_ON(len > ccid2_seq_len);
seqp = prev;
@@ -418,8 +418,8 @@
/* update RTO */
if (hctx->ccid2hctx_srtt == -1 ||
- (jiffies - hctx->ccid2hctx_lastrtt) >= hctx->ccid2hctx_srtt) {
- unsigned long r = jiffies - seqp->ccid2s_sent;
+ time_after(jiffies, hctx->ccid2hctx_lastrtt + hctx->ccid2hctx_srtt)) {
+ unsigned long r = (long)jiffies - (long)seqp->ccid2s_sent;
int s;
/* first measurement */