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Message-ID: <e8b7a123-f542-4a22-b463-122970922535@lunn.ch> Date: Thu, 17 Aug 2023 21:44:03 +0200 From: Andrew Lunn <andrew@...n.ch> To: "Hawkins, Nick" <nick.hawkins@....com> Cc: "christophe.jaillet@...adoo.fr" <christophe.jaillet@...adoo.fr>, "simon.horman@...igine.com" <simon.horman@...igine.com>, "Verdun, Jean-Marie" <verdun@....com>, "davem@...emloft.net" <davem@...emloft.net>, "edumazet@...gle.com" <edumazet@...gle.com>, "kuba@...nel.org" <kuba@...nel.org>, "pabeni@...hat.com" <pabeni@...hat.com>, "robh+dt@...nel.org" <robh+dt@...nel.org>, "krzysztof.kozlowski+dt@...aro.org" <krzysztof.kozlowski+dt@...aro.org>, "conor+dt@...nel.org" <conor+dt@...nel.org>, "netdev@...r.kernel.org" <netdev@...r.kernel.org>, "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org> Subject: Re: [PATCH v3 4/5] net: hpe: Add GXP UMAC Driver > > > + if (length > 1514) { > > > + netdev_err(ndev, "send data %d bytes > 1514, clamp it to 1514\n", > > > + skb->len); > > > Than should be rate limited. > > How is this done? Is there a particular function to call that > will handle it in the backend? Sorry, i was ambiguous. I meant the netdev_err() should be rate limited, otherwise some user space application could DOS your system by sending big packets at line rate flooding your logs. Andrew
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