diff options
| author | Ziyang Xuan <william.xuanziyang@huawei.com> | 2022-09-15 09:55:56 +0800 |
|---|---|---|
| committer | Marc Kleine-Budde <mkl@pengutronix.de> | 2022-09-23 13:53:10 +0200 |
| commit | 3fd7bfd28cfd68ae80a2fe92ea1615722cc2ee6e (patch) | |
| tree | bb8251b46c8468d34998736640fecb921f855d8b | |
| parent | edd1a7e42f1d2d09c5f79ecef05ae19dc669bf34 (diff) | |
can: bcm: check the result of can_send() in bcm_can_tx()
If can_send() fail, it should not update frames_abs counter
in bcm_can_tx(). Add the result check for can_send() in bcm_can_tx().
Suggested-by: Marc Kleine-Budde <mkl@pengutronix.de>
Suggested-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Ziyang Xuan <william.xuanziyang@huawei.com>
Link: https://lore.kernel.org/all/9851878e74d6d37aee2f1ee76d68361a46f89458.1663206163.git.william.xuanziyang@huawei.com
Acked-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
| -rw-r--r-- | net/can/bcm.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/net/can/bcm.c b/net/can/bcm.c index 0a2adb844280..27706f6ace34 100644 --- a/net/can/bcm.c +++ b/net/can/bcm.c @@ -274,6 +274,7 @@ static void bcm_can_tx(struct bcm_op *op) struct sk_buff *skb; struct net_device *dev; struct canfd_frame *cf = op->frames + op->cfsiz * op->currframe; + int err; /* no target device? => exit */ if (!op->ifindex) @@ -298,11 +299,11 @@ static void bcm_can_tx(struct bcm_op *op) /* send with loopback */ skb->dev = dev; can_skb_set_owner(skb, op->sk); - can_send(skb, 1); + err = can_send(skb, 1); + if (!err) + op->frames_abs++; - /* update statistics */ op->currframe++; - op->frames_abs++; /* reached last frame? */ if (op->currframe >= op->nframes) |