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sctp: use time_before or time_after for comparing jiffies 

The functions time_before or time_after are more robust
for comparing jiffies against other values.

Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Wei Yongjun 2009-03-02 09:46:13 +00:00 committed by David S. Miller
parent c6db93a58f
commit f61f6f82c9
2 changed files with 6 additions and 4 deletions
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3
net/sctp/outqueue.c
View File

@ -428,7 +428,8 @@ void sctp_retransmit_mark(struct sctp_outq *q,
* retransmitting due to T3 timeout.
*/
if (reason == SCTP_RTXR_T3_RTX &&
(jiffies - chunk->sent_at) < transport->last_rto)
time_before(jiffies, chunk->sent_at +
transport->last_rto))
continue;
/* RFC 2960 6.2.1 Processing a Received SACK

7
net/sctp/transport.c
View File

@ -543,8 +543,8 @@ void sctp_transport_lower_cwnd(struct sctp_transport *transport,
* congestion indications more than once every window of
* data (or more loosely more than once every round-trip time).
*/
if ((jiffies - transport->last_time_ecne_reduced) >
transport->rtt) {
if (time_after(jiffies, transport->last_time_ecne_reduced +
transport->rtt)) {
transport->ssthresh = max(transport->cwnd/2,
4*transport->asoc->pathmtu);
transport->cwnd = transport->ssthresh;
@ -561,7 +561,8 @@ void sctp_transport_lower_cwnd(struct sctp_transport *transport,
* to be done every RTO interval, we do it every hearbeat
* interval.
*/
if ((jiffies - transport->last_time_used) > transport->rto)
if (time_after(jiffies, transport->last_time_used +
transport->rto))
transport->cwnd = max(transport->cwnd/2,
4*transport->asoc->pathmtu);
break;