[PATCH 4.14 019/209] can: rx-offload: can_rx_offload_offload_one(): increment rx_fifo_errors on queue overflow or OOM

From: Marc Kleine-Budde mkl@pengutronix.de

[ 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 --- drivers/net/can/rx-offload.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/net/can/rx-offload.c b/drivers/net/can/rx-offload.c index c0e51a2f8e4fc..b068e2320c794 100644 --- a/drivers/net/can/rx-offload.c +++ b/drivers/net/can/rx-offload.c @@ -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; }