From: "Michael S. Tsirkin" <mst@redhat.com>
To: Arnd Bergmann <arnd@arndb.de>
Cc: Herbert Xu <herbert@gondor.apana.org.au>,
"Fischer, Anna" <anna.fischer@hp.com>,
netdev@vger.kernel.org, bridge@lists.linux-foundation.org,
linux-kernel@vger.kernel.org,
"David S. Miller" <davem@davemloft.net>,
Or Gerlitz <ogerlitz@voltaire.com>,
Edge Virtual Bridging <evb@yahoogroups.com>
Subject: Re: [Bridge] [PATCH] macvlan: add tap device backend
Date: Mon, 10 Aug 2009 16:42:29 +0300 [thread overview]
Message-ID: <20090810134229.GA10036@redhat.com> (raw)
In-Reply-To: <200908101529.46285.arnd@arndb.de>
On Mon, Aug 10, 2009 at 03:29:46PM +0200, Arnd Bergmann wrote:
> On Monday 10 August 2009, Michael S. Tsirkin wrote:
> >
> > > Would it be enough to check the dev_queue_xmit() return
> > > code for NETDEV_TX_BUSY?
> > >
> > > How would I get notified when it gets free again?
> >
> > You can do this by creating a socket. Look at how tun does
> > this now.
>
> Hmm, I was hoping to be able to avoid this, because I can
> interact more directly with the outbound physical interface
> using dev_queue_xmit() instead of netif_rx_ni().
Yea, that's what tun does. socket just notifies you when
packets are freed.
> I'll have a look. Thanks,
>
> Arnd <><
WARNING: multiple messages have this Message-ID (diff)
From: "Michael S. Tsirkin" <mst@redhat.com>
To: Arnd Bergmann <arnd@arndb.de>
Cc: netdev@vger.kernel.org, Patrick McHardy <kaber@trash.net>,
Stephen Hemminger <shemminger@linux-foundation.org>,
"David S. Miller" <davem@davemloft.net>,
Herbert Xu <herbert@gondor.apana.org.au>,
Or Gerlitz <ogerlitz@voltaire.com>,
"Fischer, Anna" <anna.fischer@hp.com>,
bridge@lists.linux-foundation.org, linux-kernel@vger.kernel.org,
Edge Virtual Bridging <evb@yahoogroups.com>
Subject: Re: [PATCH] macvlan: add tap device backend
Date: Mon, 10 Aug 2009 16:42:29 +0300 [thread overview]
Message-ID: <20090810134229.GA10036@redhat.com> (raw)
In-Reply-To: <200908101529.46285.arnd@arndb.de>
On Mon, Aug 10, 2009 at 03:29:46PM +0200, Arnd Bergmann wrote:
> On Monday 10 August 2009, Michael S. Tsirkin wrote:
> >
> > > Would it be enough to check the dev_queue_xmit() return
> > > code for NETDEV_TX_BUSY?
> > >
> > > How would I get notified when it gets free again?
> >
> > You can do this by creating a socket. Look at how tun does
> > this now.
>
> Hmm, I was hoping to be able to avoid this, because I can
> interact more directly with the outbound physical interface
> using dev_queue_xmit() instead of netif_rx_ni().
Yea, that's what tun does. socket just notifies you when
packets are freed.
> I'll have a look. Thanks,
>
> Arnd <><
next prev parent reply other threads:[~2009-08-10 13:42 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-08-06 21:50 [Bridge] [PATCH] macvlan: add tap device backend Arnd Bergmann
2009-08-06 21:50 ` Arnd Bergmann
2009-08-07 3:20 ` [Bridge] " David Miller
2009-08-07 3:20 ` David Miller
2009-08-07 17:35 ` [Bridge] " Daniel Robbins
2009-08-07 17:35 ` Daniel Robbins
2009-08-09 8:02 ` Michael S. Tsirkin
2009-08-09 8:02 ` Michael S. Tsirkin
2009-08-09 20:42 ` [Bridge] " Arnd Bergmann
2009-08-09 20:42 ` Arnd Bergmann
2009-08-10 8:50 ` [Bridge] " Michael S. Tsirkin
2009-08-10 8:50 ` Michael S. Tsirkin
2009-08-10 13:29 ` [Bridge] " Arnd Bergmann
2009-08-10 13:29 ` Arnd Bergmann
2009-08-10 13:42 ` Michael S. Tsirkin [this message]
2009-08-10 13:42 ` Michael S. Tsirkin
2009-08-10 6:47 ` [Bridge] " Patrick McHardy
2009-08-10 6:47 ` Patrick McHardy
2009-08-10 18:43 ` [Bridge] " Arnd Bergmann
2009-08-10 18:43 ` Arnd Bergmann
[not found] <0199E0D51A61344794750DC57738F58E6D6A6CD7F6@GVW1118EXC.americas.hpqcorp.net>
2009-08-07 19:10 ` [Bridge] " Paul Congdon (UC Davis)
2009-08-07 19:10 ` Paul Congdon (UC Davis)
2009-08-07 19:10 ` Paul Congdon (UC Davis)
2009-08-07 19:35 ` Stephen Hemminger
2009-08-07 19:35 ` Stephen Hemminger
2009-08-07 19:44 ` Fischer, Anna
2009-08-07 19:44 ` Fischer, Anna
2009-08-07 20:17 ` david
2009-08-07 20:17 ` david
2009-08-07 19:47 ` Paul Congdon (UC Davis)
2009-08-07 19:47 ` Paul Congdon (UC Davis)
2009-08-07 21:38 ` Arnd Bergmann
2009-08-07 21:38 ` Arnd Bergmann
2009-08-07 22:05 ` Arnd Bergmann
2009-08-07 22:05 ` Arnd Bergmann
2009-08-10 12:40 ` Fischer, Anna
2009-08-10 12:40 ` Fischer, Anna
2009-08-10 12:40 ` Fischer, Anna
2009-08-10 19:04 ` Arnd Bergmann
2009-08-10 19:04 ` Arnd Bergmann
2009-08-10 19:32 ` Michael S. Tsirkin
2009-08-10 19:32 ` Michael S. Tsirkin
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