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Date: Wed, 10 Jan 2007 09:34:45 +0100 From: Ingo Oeser <netdev@...eo.de> To: Divy Le Ray <divy@...lsio.com> Cc: Stephen Hemminger <shemminger@...l.org>, Jeff Garzik <jgarzik@...ox.com>, netdev@...r.kernel.org Subject: Re: [PATCH 3/3] chelsio: more rx speedup Divy Le Ray schrieb: > Stephen Hemminger wrote: > > On Tue, 9 Jan 2007 09:42:03 +0100 > > Ingo Oeser <netdev@...eo.de> wrote: > >> Stephen Hemminger schrieb: > >>> - if (fl->credits < drop_thres) { > >>> +use_orig_buf: > >>> + if (fl->credits < 2) { > >>> > >> Why 2? What does this magic number mean? > > No idea, it was there in the original. (as a parameter). > The T2 HW behaves nicely when it is guaranteed to have 2 available > entries in the rx free list. Can we have a #define for this? That would help people understand this issue more. And don't be shy about errata, all hardware and software out there has them like the humans that made them :-) Regards Ingo Oeser - To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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