* Allocation of small packets on Rx
@ 2011-12-19 23:30 Benjamin Herrenschmidt
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From: Benjamin Herrenschmidt @ 2011-12-19 23:30 UTC (permalink / raw)
To: netdev
Hi folks !
For a driver that gets small packets "inline" in the rx descriptors, I
allocate the skb in the rx poll and copy the data to it.
Should I allocate an skb of the just the right size for the packet (+
eventual alignment) or is there any benefit to allocating all skb's the
same size ?
The max size of those "inline" packets is 256 bytes and the driver today
always allocate that. Does that "help" the allocator some way or should
I just allocate what is needed for each packet ?
Cheers,
Ben.
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2011-12-19 23:30 Allocation of small packets on Rx Benjamin Herrenschmidt
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