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 08:31:28 +0000 (10:31 +0200)
commit5c065ee4a07dad5531c9a475ae4c44bc274eb6de
treec27fdbd8eb1e8be4805efc191da90d3ed26fb288
parentfd2c9e605269be4d4eb936973c058c5d599b2665
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