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 <zhangchangzhong@xxxxxxxxxx>
> ---
> 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))
Please add here netdev_err_once("Abort to broadcast, ignoring!"), or
something like this.
> + return;
> +
> if (j1939_tp_im_transmitter(skcb))
> j1939_xtp_rx_abort(priv, skb, true);
>
> --
> 2.9.5
>
>
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