Thread (13 messages) 13 messages, 6 authors, 2005-02-01

Re: design for TSO performance fix

From: "David S. Miller" <davem@davemloft.net>
Date: 2005-01-28 05:19:40

On Fri, 28 Jan 2005 12:31:53 +1100
Herbert Xu [off-list ref] wrote:
quoted
2) As a result of #1, all the pcount crap goes away.
  The need for two MSS state variables (mss_cache,
  and mss_cache_std) and assosciated complexity is
  eliminated as well.
Does this mean that we'll start counting bytes instead
of packets?

If not then please let me know on how you plan to do the
packet counting.
Things will be same as what we have now, except multi-packet
SKBs will no longer exist in the retransmit queue.
The other good thing about this is that if we do this for all
packets including non-TSO ones, then the TCP stack doesn't have
to own the TCP/IP headers at all.  Then we can stop worrying
about the TSO/COW mangling.
Hmmm, have to think about that some more.
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