Messages in this thread | | | Date | Thu, 22 May 2014 21:21:33 +0100 | From | Jim Baxter <> | Subject | Re: skbuff truesize incorrect. |
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On 22/05/14 20:59, Eric Dumazet wrote: > On Thu, 2014-05-22 at 20:39 +0100, Jim Baxter wrote: > >> I now think that the correct solution here is to create a new smaller >> skb and copy the data from the sub packets into it. > > For low speed devices, this is indeed the best way. > > (this is called copybreak in some nic drivers) > > > Thank you Eric.
It is USB device that can handle 480Mbits/s so a middle speed device.
It looks like it is the normal trade off of speed versus memory. Either I can use skb_clone for speed but that will impact memory with multiple skb's of 16k or I copy the data to keep the memory usage low. Though copying 2k of data into an skb will not likely be a massive overhead.
Jim
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