Date: Sun, 20 Oct 2013 11:08:52 +0330 From: h bagade <bagadeh@gmail.com> To: Luigi Rizzo <rizzo@iet.unipi.it> Cc: "freebsd-net@freebsd.org" <freebsd-net@freebsd.org>, Raimundo Santos <raitech@gmail.com> Subject: Re: Netmap and in-kernel IPFW interactions! Message-ID: <CAARSjE1zGeuf4tY7a6P62A56U_rCYAbCJYGPJw1AYn3ENC9z%2Bw@mail.gmail.com> In-Reply-To: <CA%2BhQ2%2BjMc8FFbuqXU2PETsfLjoP4MeWS2ymG6eOnB_8wpf%2BOnQ@mail.gmail.com> References: <CAARSjE3xe6uzYDA_scB8LT8jozUZ0%2B_SM5v1VwGt9RhxG_NEKQ@mail.gmail.com> <CAGQ6iC_WAxuB%2BHgy4H1r6cgN0kxFRf=Zb%2BT5UAZTKnnKD%2BxVqA@mail.gmail.com> <CAARSjE0DN=OsH6m8ufujA5A-8Kuh34bHQD%2BsVVu-SJ0skz2YiQ@mail.gmail.com> <CA%2BhQ2%2BjMc8FFbuqXU2PETsfLjoP4MeWS2ymG6eOnB_8wpf%2BOnQ@mail.gmail.com>
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On Sat, Oct 19, 2013 at 8:13 PM, Luigi Rizzo <rizzo@iet.unipi.it> wrote: > > On Sat, Oct 19, 2013 at 9:32 AM, h bagade <bagadeh@gmail.com> wrote: > >> On Sat, Oct 19, 2013 at 6:58 PM, Raimundo Santos <raitech@gmail.com> >> wrote: >> >> > On 19 October 2013 06:00, h bagade <bagadeh@gmail.com> wrote: >> > >> >> >> I've changed em and igb drivers too. In this situation, I think that they >> are using netmap and grow-up performance is a sign of the change. I've >> used pkt-gen for performance checking. >> > > you use netmap only when you use a netmap-aware tool, > such as pkt-gen. > > The normal stack still uses the regular drivers. > > cheers > luigi > I am somehow confused how it is possible that netmap-aware tools use netmap datapath and others still use the regular driver! Isn't that the changed NIC driver either send the packets to userspace(in case of netmap) or to the kernel(as usual)? Netmap is really interesting and I am eager to know the architecture and how packets flow using netmap or not.
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