Date: Thu, 22 Oct 2015 22:07:42 +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: <20151022190741.GG6469@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 am register file descriptor in kevent with EV_SET(ke+used, thr->outside.fd, EVFILT_READ, EV_ADD | EV_ENABLE | EV_CLEAR, 0, 0, &thr->outside); after got event in kevent(kq, NULL, 0, ke, max_event, NULL) I am don't see anything in rxring. if I do ioctl(fd, NIOCRXSYNC, NULL) after kevent I am see received packets in rxring, but nothing transmited. if I do ioctl(fd, NIOCTXSYNC, NULL) before kevent -- packets transmited. I am try this in VirtualBox VM. Also, can you look in this thread about VLAN processing?
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