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authorMike Christie <michaelc@cs.wisc.edu>2008-05-08 20:15:34 -0500
committerJames Bottomley <James.Bottomley@HansenPartnership.com>2008-05-08 20:38:57 -0500
commitc8611f975403dd20e6503aff8aded5dcb718f75b (patch)
treedf1cdd33d074eed300dff8adee29c018428861a2 /drivers/scsi
parent4cf1043593db6a337f10e006c23c69e5fc93e722 (diff)
downloadop-kernel-dev-c8611f975403dd20e6503aff8aded5dcb718f75b.zip
op-kernel-dev-c8611f975403dd20e6503aff8aded5dcb718f75b.tar.gz
[SCSI] libiscsi regression in 2.6.25: fix setting of recv timer
If the ping tmo is longer than the recv tmo then we could miss a window where we were supposed to check the recv tmo. This happens because the ping code will set the next timeout for the ping timeout, and if the ping executes quickly there will be a long chunk of time before the timer wakes up again. This patch has the ping processing code kick off a recv tmo check when getting a nop in response to our ping. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Cc: Stable Tree <stable@kernel.org> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Diffstat (limited to 'drivers/scsi')
-rw-r--r--drivers/scsi/libiscsi.c12
1 files changed, 6 insertions, 6 deletions
diff --git a/drivers/scsi/libiscsi.c b/drivers/scsi/libiscsi.c
index 98164f3..b43bf1d 100644
--- a/drivers/scsi/libiscsi.c
+++ b/drivers/scsi/libiscsi.c
@@ -730,7 +730,9 @@ static int __iscsi_complete_pdu(struct iscsi_conn *conn, struct iscsi_hdr *hdr,
if (iscsi_recv_pdu(conn->cls_conn, hdr, data,
datalen))
rc = ISCSI_ERR_CONN_FAILED;
- }
+ } else
+ mod_timer(&conn->transport_timer,
+ jiffies + conn->recv_timeout);
iscsi_free_mgmt_task(conn, mtask);
break;
default:
@@ -1478,11 +1480,9 @@ static void iscsi_check_transport_timeouts(unsigned long data)
}
if (time_before_eq(last_recv + recv_timeout, jiffies)) {
- if (time_before_eq(conn->last_ping, last_recv)) {
- /* send a ping to try to provoke some traffic */
- debug_scsi("Sending nopout as ping on conn %p\n", conn);
- iscsi_send_nopout(conn, NULL);
- }
+ /* send a ping to try to provoke some traffic */
+ debug_scsi("Sending nopout as ping on conn %p\n", conn);
+ iscsi_send_nopout(conn, NULL);
next_timeout = conn->last_ping + (conn->ping_timeout * HZ);
} else
next_timeout = last_recv + recv_timeout;
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