diff options
| author | Zhang Changzhong <zhangchangzhong@huawei.com> | 2021-10-28 17:38:25 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-11-18 21:16:03 +0300 |
| commit | d1be2ab083540b57083139fe358f1efbcfb5d9a8 (patch) | |
| tree | bd91433958810a7f56325ee66bb6cb337f9050db /net/can | |
| parent | 0c10d5d395632c314c6356812728a73f88f0f5e8 (diff) | |
| download | linux-d1be2ab083540b57083139fe358f1efbcfb5d9a8.tar.xz | |
can: j1939: j1939_tp_cmd_recv(): ignore abort message in the BAM transport
commit c0f49d98006f2db3333b917caac65bce2af9865c upstream.
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")
Link: https://lore.kernel.org/all/1635431907-15617-2-git-send-email-zhangchangzhong@huawei.com
Cc: stable@vger.kernel.org
Signed-off-by: Zhang Changzhong <zhangchangzhong@huawei.com>
Acked-by: Oleksij Rempel <o.rempel@pengutronix.de>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'net/can')
| -rw-r--r-- | net/can/j1939/transport.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/net/can/j1939/transport.c b/net/can/j1939/transport.c index 6c0a0ebdd024..05eb3d059e17 100644 --- a/net/can/j1939/transport.c +++ b/net/can/j1939/transport.c @@ -2085,6 +2085,12 @@ 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)) { + netdev_err_once(priv->ndev, "%s: abort to broadcast (%02x), ignoring!\n", + __func__, skcb->addr.sa); + return; + } + if (j1939_tp_im_transmitter(skcb)) j1939_xtp_rx_abort(priv, skb, true); |