netdev - Re: [PATCH net-next V2 1/3] net: Add GRO support for UDP encapsulating protocols

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Date:	Tue, 07 Jan 2014 08:33:53 -0800
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Or Gerlitz <ogerlitz@...lanox.com>
Cc:	hkchu@...gle.com, edumazet@...gle.com, herbert@...dor.apana.org.au,
	netdev@...r.kernel.org, davem@...emloft.net, yanb@...lanox.com,
	shlomop@...lanox.com
Subject: Re: [PATCH net-next V2 1/3] net: Add GRO support for UDP
 encapsulating protocols

On Tue, 2014-01-07 at 17:29 +0200, Or Gerlitz wrote:
>  
> +
> +#define MAX_UDP_PORT (1 << 16)
> +extern const struct net_offload __rcu *udp_offloads[MAX_UDP_PORT];

Thats 512 KB of memory.

This will greatly impact forwarding performance of UDP packets with
random ports, and will increase kernel memory size for embedded devices.



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