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can: rx-offload: can_rx_offload_offload_one(): increment rx_fifo_errors on queue overflow or OOM

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[ Upstream commit 4e9016bee3bf0c24963097edace034ff205b565c ]

If the rx-offload skb_queue is full or the skb allocation fails (due to OOM),
the mailbox contents is discarded.

This patch adds the incrementing of the rx_fifo_errors statistics counter.

Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Marc Kleine-Budde 2019-10-09 15:15:07 +02:00 committed by Greg Kroah-Hartman
parent b3cc795471
commit 8c7dd979e1
1 changed files with 3 additions and 1 deletions
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4
drivers/net/can/rx-offload.c
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@ -134,8 +134,10 @@ static struct sk_buff *can_rx_offload_offload_one(struct can_rx_offload *offload
ret = offload->mailbox_read(offload, &cf_overflow,
&timestamp, n);
if (ret)
if (ret) {
offload->dev->stats.rx_dropped++;
offload->dev->stats.rx_fifo_errors++;
}
return NULL;
}