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authorDaniel Borkmann <dborkman@redhat.com>2014-06-11 18:19:30 +0200
committerDavid S. Miller <davem@davemloft.net>2014-06-11 12:23:17 -0700
commite575235fc6026bb75e166ff68f84118c62d73f94 (patch)
tree299131847e629caa9201f9ba8066302864e0f22d /net/sctp/associola.c
parentb82e8f31acc7d799638692e65ff017f3e1b6a43d (diff)
net: sctp: migrate most recently used transport to ktime
Be more precise in transport path selection and use ktime helpers instead of jiffies to compare and pick the better primary and secondary recently used transports. This also avoids any side-effects during a possible roll-over, and could lead to better path decision-making. Signed-off-by: Daniel Borkmann <dborkman@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sctp/associola.c')
-rw-r--r--net/sctp/associola.c8
1 files changed, 5 insertions, 3 deletions
diff --git a/net/sctp/associola.c b/net/sctp/associola.c
index 9f1cc6f1535d..620c99e19e77 100644
--- a/net/sctp/associola.c
+++ b/net/sctp/associola.c
@@ -1036,7 +1036,7 @@ static void sctp_assoc_bh_rcv(struct work_struct *work)
}
if (chunk->transport)
- chunk->transport->last_time_heard = jiffies;
+ chunk->transport->last_time_heard = ktime_get();
/* Run through the state machine. */
error = sctp_do_sm(net, SCTP_EVENT_T_CHUNK, subtype,
@@ -1283,11 +1283,13 @@ static void sctp_select_active_and_retran_path(struct sctp_association *asoc)
trans->state == SCTP_PF)
continue;
if (trans_pri == NULL ||
- trans->last_time_heard > trans_pri->last_time_heard) {
+ ktime_after(trans->last_time_heard,
+ trans_pri->last_time_heard)) {
trans_sec = trans_pri;
trans_pri = trans;
} else if (trans_sec == NULL ||
- trans->last_time_heard > trans_sec->last_time_heard) {
+ ktime_after(trans->last_time_heard,
+ trans_sec->last_time_heard)) {
trans_sec = trans;
}
}