RE: [PATCH net-next 08/12] r8152: support TSO

[hayeswang]

 David Laight [mailto:David.Laight@xxxxxxxxxx] 
> Sent: Tuesday, March 04, 2014 8:12 PM
> To: 'Hayes Wang'; netdev@xxxxxxxxxxxxxxx
> Cc: nic_swsd@xxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx; 
> linux-usb@xxxxxxxxxxxxxxx
> Subject: RE: [PATCH net-next 08/12] r8152: support TSO
> 
> From: Hayes Wang
> > Support scatter gather and TSO.
> > 
> > Adjust the tx checksum function and set the max gso size to fix the
> > size of the tx aggregation buffer.
> 
> There is little point supporting TSO unless the usb host controller
> supports arbitrary aligned scatter-gather.
> All you do is require that a large skb be allocated (that may well
> fail), and add it another data copy.

I think I have done it. For also working for EHCI usb host controller,
I allocate 16 KB continuous buffer and copy the fragmented packets to
it and bulk out the buffer.
 
Best Regards,
Hayes

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