From: Martin Schiller <ms@dev.tdt.de>
To: andrew.hendry@gmail.com, davem@davemloft.net, kuba@kernel.org,
xie.he.0141@gmail.com
Cc: linux-x25@vger.kernel.org, netdev@vger.kernel.org,
linux-kernel@vger.kernel.org, Martin Schiller <ms@dev.tdt.de>
Subject: [PATCH net-next v3 4/6] net/lapb: fix t1 timer handling for DCE
Date: Wed, 18 Nov 2020 14:59:17 +0100 [thread overview]
Message-ID: <20201118135919.1447-5-ms@dev.tdt.de> (raw)
In-Reply-To: <20201118135919.1447-1-ms@dev.tdt.de>
fix t1 timer handling for DCE 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@dev.tdt.de>
---
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
next prev parent reply other threads:[~2020-11-18 14:00 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-18 13:59 [PATCH net-next v3 0/6] net/x25: netdev event handling Martin Schiller
2020-11-18 13:59 ` [PATCH net-next v3 1/6] net/x25: handle additional netdev events Martin Schiller
2020-11-18 13:59 ` [PATCH net-next v3 2/6] net/lapb: fix lapb_connect_request() for DCE Martin Schiller
2020-11-18 13:59 ` [PATCH net-next v3 3/6] net/lapb: handle carrier loss correctly Martin Schiller
2020-11-18 13:59 ` Martin Schiller [this message]
2020-11-18 13:59 ` [PATCH net-next v3 5/6] net/x25: fix restart request/confirm handling Martin Schiller
2020-11-18 13:59 ` [PATCH net-next v3 6/6] net/x25: remove x25_kill_by_device() Martin Schiller
2020-11-18 14:47 ` [PATCH net-next v3 0/6] net/x25: netdev event handling Xie He
2020-11-19 7:02 ` Martin Schiller
2020-11-19 8:09 ` Xie He
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