Date: Tue, 12 Aug 2014 23:53:51 -0700 From: Adrian Chadd <adrian@freebsd.org> To: Wei Hu <weh@microsoft.com> Cc: "freebsd-net@freebsd.org" <freebsd-net@freebsd.org>, "d@delphij.net" <d@delphij.net> Subject: Re: vRSS support on FreeBSD Message-ID: <CAJ-VmonR0koW90%2BS8F2UeiH%2B0DW7n34zc3z_vT1BhtpxSjWWUw@mail.gmail.com> In-Reply-To: <78ee306703c9492aad278425745032c7@BY1PR0301MB0902.namprd03.prod.outlook.com> References: <184b69414bd246eeacc0d4234a730f2f@BY1PR0301MB0902.namprd03.prod.outlook.com> <CAJ-VmokJ8G-mz%2BL=zJkbQnCHHFBcvqhHjCrHjoWS5i9ViF5qrw@mail.gmail.com> <e514d7fdb89c4d2988dfb4300c633a0c@BY1PR0301MB0902.namprd03.prod.outlook.com> <CAJ-Vmonr6qP=Gwu600bwnQg0o74-V491gr_1u1uJ0qnp=wZ_Zg@mail.gmail.com> <dd994385fc5e4fa49847828a78c204c8@BY1PR0301MB0902.namprd03.prod.outlook.com> <CAJ-VmokFTP64C84_a%2BmDu_YW0y3yY37tJfjpyMNHJ1tzL_kEEg@mail.gmail.com> <78ee306703c9492aad278425745032c7@BY1PR0301MB0902.namprd03.prod.outlook.com>
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On 12 August 2014 23:27, Wei Hu <weh@microsoft.com> wrote: > Unfortunately I am not aware of any official spec. Damn! Ok, so when they send the update for the redirect table, what's that look like? How do they send it? > The driver for Linux guest OS does the similar thing for the tx path -- receive the send table update from host, calculate the hash value for each tx packet and use it to find the tx queue from the send table. > > I think the Windows guests do the same. I wonder if there's any possibility for getting that added to the receive packet descriptor if the underlying hardware supports it - or well, if the OS has done it already. -a
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