Date: Tue, 2 Feb 2016 23:44:47 +0300 From: Slawa Olhovchenkov <slw@zxy.spb.ru> To: Luigi Rizzo <rizzo@iet.unipi.it> Cc: Adrian Chadd <adrian.chadd@gmail.com>, "stable@freebsd.org" <stable@freebsd.org> Subject: Re: 82576 + NETMAP + VLAN Message-ID: <20160202204446.GQ88527@zxy.spb.ru> In-Reply-To: <CA%2BhQ2%2Bg0ggpS%2BE5nOpON66efs7cwsed=NvaKa=mzsg6FycGhiQ@mail.gmail.com> References: <20151018185639.GF42243@zxy.spb.ru> <CAJ-VmonO8ok=twgBGVMBiAs=AyRs4LUoDX6pGBtWStvndGKGzg@mail.gmail.com> <20151018210049.GT6469@zxy.spb.ru> <CAJ-Vmonfxz5vjVHqp6gS97mhnU10SLgohRA35O8MQLUzHvcsrw@mail.gmail.com> <20151022163519.GF6469@zxy.spb.ru> <CAJ-Vmok56uBJgJh4Bwr7yjNwsigU=ySBJ08H26caODAAxXNLRA@mail.gmail.com> <CA%2BhQ2%2Bg0ggpS%2BE5nOpON66efs7cwsed=NvaKa=mzsg6FycGhiQ@mail.gmail.com>
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On Thu, Oct 22, 2015 at 11:24:53AM -0700, Luigi Rizzo wrote: > On Thu, Oct 22, 2015 at 11:12 AM, Adrian Chadd <adrian.chadd@gmail.com> wrote: > > On 22 October 2015 at 09:35, Slawa Olhovchenkov <slw@zxy.spb.ru> wrote: > >> On Sun, Oct 18, 2015 at 07:45:52PM -0700, Adrian Chadd wrote: > >> > >>> Heh, file a bug with luigi; it should be defined better inside netmap itself. > >> > >> I am CC: luigi. > >> > >> Next question: do kevent RX/TX sync? > >> In my setup I am need to manual NIOCTXSYNC/NIOCRXSYNC. > > > > Hi, > > > > Nope. kqueue() doesn't do the implicit sync like poll() does; it's > > just the notification path. > > actually not. When the file descriptor is registered there > is an implicit sync, and there is another one when an event > is posted for the file descriptor. > > unless there are bugs, of course. I found strange behaivor: 1. open netmap and register in main thread 2. kevent register in different thread 3. result: got event by kevent but no ring sinc (all head,tail,cur still 0). Is this normal? Or is this bug? open and registering netmap in same thread as kevent resolve this.
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