[PATCH net-next v2 6/6] net/lapb: fix t1 timer handling

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]<

 



fix t1 timer handling in LAPB_STATE_0:
 o DTE interface changes immediately to LAPB_STATE_1 and start sending
   SABM(E).
 o DCE interface sends N2-times DM and changes to LAPB_STATE_1
   afterwards if there is no response in the meantime.

Signed-off-by: Martin Schiller <ms@xxxxxxxxxx>
---

Change from v1:
fix 'subject_prefix' and 'checkpatch' warnings

---
 net/lapb/lapb_timer.c | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/net/lapb/lapb_timer.c b/net/lapb/lapb_timer.c
index 8f5b17001a07..baa247fe4ed0 100644
--- a/net/lapb/lapb_timer.c
+++ b/net/lapb/lapb_timer.c
@@ -85,11 +85,18 @@ static void lapb_t1timer_expiry(struct timer_list *t)
 	switch (lapb->state) {
 
 		/*
-		 *	If we are a DCE, keep going DM .. DM .. DM
+		 *	If we are a DCE, send DM up to N2 times, then switch to
+		 *	STATE_1 and send SABM(E).
 		 */
 		case LAPB_STATE_0:
-			if (lapb->mode & LAPB_DCE)
+			if (lapb->mode & LAPB_DCE &&
+			    lapb->n2count != lapb->n2) {
+				lapb->n2count++;
 				lapb_send_control(lapb, LAPB_DM, LAPB_POLLOFF, LAPB_RESPONSE);
+			} else {
+				lapb->state = LAPB_STATE_1;
+				lapb_establish_data_link(lapb);
+			}
 			break;
 
 		/*
-- 
2.20.1




[Index of Archives]     [Linux ACPI]     [Linux Kernel]     [Linux Laptop]     [Kernel Newbies]     [Security]     [Netfilter]     [Bugtraq]     [Photo]     [Yosemite Photos]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Samba]     [Video 4 Linux]     [Device Mapper]     [Linux Resources]

  Powered by Linux