Re: [WIP] [PATCH] WAS Re: [RFC] New driver API to speed up small packets xmits

[Sridhar Samudrala <sri@us.ibm.com>]

Krishna Kumar2 wrote:
> Hi Sridhar,
> 
> Sridhar Samudrala <sri@us.ibm.com> wrote on 05/17/2007 03:42:03 AM:
> 
>> AFAIK, gso_skb can be a list of skb's. Can we add a list
>> to another list using __skb_queue_head()?
>> Also, if gso_skb is a list of multiple skb's, i think the
>> count needs to be decremented by the number of segments in
>> gso_skb.
> 
> gso_skb is the last GSO skb that failed to be sent. This already
> segmented skb is kept "cached" and whenever the next xmit happens,
> this skb is first sent before any packets from the queue are taken
> out (otherwise out-of-order packets). So there can atmost be one
> gso_skb per device.

Yes. There can be only one gso_skb per device. But it can have more
than one segments linked together via skb->next.

Thanks
Sridhar