lkml.org 
[lkml]   [2021]   [Oct]   [21]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH net 1/3] can: j1939: j1939_tp_cmd_recv(): ignore abort message in the BAM transport
Date
This patch prevents BAM transport from being closed by receiving abort
message, as specified in SAE-J1939-82 2015 (A.3.3 Row 4).

Fixes: 9d71dd0c7009 ("can: add support of SAE J1939 protocol")
Signed-off-by: Zhang Changzhong <zhangchangzhong@huawei.com>
---
net/can/j1939/transport.c | 3 +++
1 file changed, 3 insertions(+)

diff --git a/net/can/j1939/transport.c b/net/can/j1939/transport.c
index bb5c4b8..2efa606 100644
--- a/net/can/j1939/transport.c
+++ b/net/can/j1939/transport.c
@@ -2081,6 +2081,9 @@ static void j1939_tp_cmd_recv(struct j1939_priv *priv, struct sk_buff *skb)
break;

case J1939_ETP_CMD_ABORT: /* && J1939_TP_CMD_ABORT */
+ if (j1939_cb_is_broadcast(skcb))
+ return;
+
if (j1939_tp_im_transmitter(skcb))
j1939_xtp_rx_abort(priv, skb, true);

--
2.9.5
\
 
 \ /
  Last update: 2021-10-21 15:54    [W:0.097 / U:1.636 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site