[openib-general] [PATCH for-2.6.21] IPoIB/cm: improve small message bandwidth

[Michael S. Tsirkin]

> Quoting r. Or Gerlitz <or.gerlitz at gmail.com>:
> Subject: Re: [PATCH for-2.6.21] IPoIB/cm: improve small message bandwidth
> 
> On 2/21/07, Michael S. Tsirkin <mst at mellanox.co.il> wrote:
> >> Quoting r. Or Gerlitz <ogerlitz at voltaire.com>:
> 
> >> I understand that in ipoib_cm_alloc_rx_skb you call dma_map_page on
> >> IPOIB_CM_RX_SG pages where here you call dma_unmap_single only $frags
> >> times, correct?
> 
> > No.
> 
> OK, lets keep this simple: does the ipoib cm post recv flow number of
> calls to dma_map_xxx equals to the ipoib cm recv completion handling
> number of calls to dma_unmap_xxx ???

AFAIK yes.

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MST