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 08:32:50 +0000 (10:32 +0200)
commitf56650e8f770f9c9f5ff0cc85e83f65720ce33dd
tree4bc49569457437266f2e0cfc31b799b2c646c050
parent6a2d15ac54c67ca8e4c6c648a6efd9dda7731eb2
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