Re: [PATCH] Ethernet Bridging: Enable Hardware Checksumming

[Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>]

Jon Mason <jdmason@xxxxxxxxxx> wrote:
> 
> checksum and scatter gather as features of the bridge device.  In the 
> case that the physical ethernet device does not support scatter 
> gather or hardware checksum, dev_queue_xmit() will check the
> dev->features and do the necessary linearization and calculate the
> checksum.

Unfortunately skb_linearize is a lot more expensive than not
generating the non-linear skb's in the first place.

So this is going to hurt people using the bridge devices over
physical devices that don't support SG.

Cheers,
-- 
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