| To: | Michael Chan <mchan@xxxxxxxxxxxx> |
|---|---|
| Subject: | Re: [PATCH 2/2] forcedeth: scatter gather and segmentation offload support |
| From: | Francois Romieu <romieu@xxxxxxxxxxxxx> |
| Date: | Wed, 26 Oct 2005 01:22:48 +0200 |
| Cc: | Ayaz Abdulla <AAbdulla@xxxxxxxxxx>, Stephen Hemminger <shemminger@xxxxxxxx>, Jeff Garzik <jgarzik@xxxxxxxxx>, Manfred Spraul <manfred@xxxxxxxxxxxxxxxx>, Netdev <netdev@xxxxxxxxxxx> |
| In-reply-to: | <1130272203.6236.2.camel@rh4> |
| References: | <DBFABB80F7FD3143A911F9E6CFD477B00BA5D790@xxxxxxxxxxxxxxxxxxxxx> <20051025215932.GA17794@xxxxxxxxxxxxxxxxxxxxxxxxxx> <1130272203.6236.2.camel@rh4> |
| Sender: | netdev-bounce@xxxxxxxxxxx |
| User-agent: | Mutt/1.4.2.1i |
Michael Chan <mchan@xxxxxxxxxxxx> :
> On Tue, 2005-10-25 at 23:59 +0200, Francois Romieu wrote:
>
> >
> > drivers/net/bnx2.c::bnx2_start_xmit seems bogus.
> >
> Please explain what did you mean by bogus?
When the CPU sets the entries of a multi-descriptor packet, the first
descriptor is marked read while the next ones are still unset.
If any of BNX2_L2CTX_TX_HOST_{BIDX/BSEQ} prevents the asic to read
beyond 'prod' (or b(yte)seq ?), the ordering does not matter. Right ?
--
Ueimor
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