# Re: \[PATCH net 1/3\] can: j1939: j1939\_tp\_cmd\_recv(): ignore abort message in the BAM transport - From: Oleksij Rempel \ - Date: 2021-10-22 09:54:28 - List: netdev - Page: https://ratatoskr.run/netdev/2021/10/1550655 - Thread: https://ratatoskr.run/linux-can/2021/10/1549639/t.md ```text On Thu, Oct 21, 2021 at 10:04:15PM +0800, Zhang Changzhong wrote: > 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 Acked-by: Oleksij Rempel Thank you! > --- > 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 > > -- Pengutronix e.K. | | Steuerwalder Str. 21 | http://www.pengutronix.de/ | 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 | ```