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 v6 3/5] net/lapb: fix t1 timer handling for LAPB_STATE_0
Date: Tue, 24 Nov 2020 10:39:36 +0100 [thread overview]
Message-ID: <20201124093938.22012-4-ms@dev.tdt.de> (raw)
In-Reply-To: <20201124093938.22012-1-ms@dev.tdt.de>
1. DTE interface changes immediately to LAPB_STATE_1 and start sending
SABM(E).
2. 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:[~2020-11-24 9:40 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-24 9:39 [PATCH net-next v6 0/5] net/x25: netdev event handling Martin Schiller
2020-11-24 9:39 ` [PATCH net-next v6 1/5] net/x25: handle additional netdev events Martin Schiller
2020-11-24 9:39 ` [PATCH net-next v6 2/5] net/lapb: support " Martin Schiller
2020-11-24 19:05 ` Xie He
2020-11-25 21:49 ` Jakub Kicinski
2020-11-26 5:57 ` Martin Schiller
2020-11-26 0:08 ` Xie He
2020-11-26 6:14 ` Martin Schiller
2020-11-24 9:39 ` Martin Schiller [this message]
2020-11-24 9:39 ` [PATCH net-next v6 4/5] net/x25: fix restart request/confirm handling Martin Schiller
2020-11-24 9:39 ` [PATCH net-next v6 5/5] net/x25: remove x25_kill_by_device() Martin Schiller
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