net: bcmgenet: suppress warnings on failed Rx SKB allocations
authorDoug Berger <opendmb@gmail.com>
Thu, 23 Apr 2020 23:02:11 +0000 (16:02 -0700)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Sun, 10 May 2020 08:29:02 +0000 (10:29 +0200)
commit27bdb2bdf2d5e3db8e4aec4b32ce6b79359efcc3
tree95ef1a6aabe96118d0b4718a33f0160ef54dc933
parentf7cfbf422d3963207c16a3ed548db8b0ee4cd042
net: bcmgenet: suppress warnings on failed Rx SKB allocations

[ Upstream commit ecaeceb8a8a145d93c7e136f170238229165348f ]

The driver is designed to drop Rx packets and reclaim the buffers
when an allocation fails, and the network interface needs to safely
handle this packet loss. Therefore, an allocation failure of Rx
SKBs is relatively benign.

However, the output of the warning message occurs with a high
scheduling priority that can cause excessive jitter/latency for
other high priority processing.

This commit suppresses the warning messages to prevent scheduling
problems while retaining the failure count in the statistics of
the network interface.

Signed-off-by: Doug Berger <opendmb@gmail.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
drivers/net/ethernet/broadcom/genet/bcmgenet.c