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List:       e1000-devel
Subject:    Re: [E1000-devel] ethtool and perfect match filters - how to use it?
From:       "Tantilov, Emil S" <emil.s.tantilov () intel ! com>
Date:       2015-07-14 18:39:33
Message-ID: 87618083B2453E4A8714035B62D67992503385D5 () FMSMSX105 ! amr ! corp ! intel ! com
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>-----Original Message-----
>From: Micha=B3 Purzy=F1ski [mailto:michalpurzynski1@gmail.com]
>Sent: Thursday, July 09, 2015 1:46 PM
>To: e1000-devel@lists.sourceforge.net
>Subject: [E1000-devel] ethtool and perfect match filters - how to use it?
>
>The 82599 data sheet says, that masks must match for all the filters.
>If so, how do I filter traffic, using Perfect Filters?
>
>I'm reading the data sheet now, here is are the exact words
>
>"The 82599 supports masking / range for the previously described
>fields. These masks are defined globally for all filters in the FDIR...M r=
egister.
>"
>
>^^ Kind of looks like masks must be the same for IP src, dst, port src
>and port dst. Would not make the filtering impossible, or restricted
>to a few simple cases?

That is correct. There is also a message from the driver in dmesg when you =
hit this case
(like trying to set filters for both src and dst ports).

Thanks,
Emil


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