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Message-Id: <20191203223428.683914108@linuxfoundation.org>
Date: Tue, 3 Dec 2019 23:31:36 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-kernel@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
stable@...r.kernel.org, Marc Kleine-Budde <mkl@...gutronix.de>,
Sasha Levin <sashal@...nel.org>
Subject: [PATCH 4.19 030/321] can: rx-offload: can_rx_offload_offload_one(): increment rx_fifo_errors on queue overflow or OOM
From: Marc Kleine-Budde <mkl@...gutronix.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@...gutronix.de>
Signed-off-by: Sasha Levin <sashal@...nel.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 e32b65599a5f2..16af09c71cfed 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,
×tamp, n);
- if (ret)
+ if (ret) {
offload->dev->stats.rx_dropped++;
+ offload->dev->stats.rx_fifo_errors++;
+ }
return NULL;
}
--
2.20.1
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