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From: "Eric W. Biederman" <ebiederm@xmission.com>
To: Or Gerlitz <or.gerlitz@gmail.com>, David Miller <davem@davemloft.net>
Cc: ali@mellanox.com, ogerlitz@mellanox.com, roland@kernel.org,
	netdev@vger.kernel.org, sean.hefty@intel.com,
	erezsh@mellanox.co.il
Subject: Re: [PATCH V2 09/12] net/eipoib: Add main driver functionality
Date: Sat, 04 Aug 2012 16:19:03 -0700	[thread overview]
Message-ID: <31b6a1d6-3bc1-48ab-aeb5-b9755fae51d2@email.android.com> (raw)
In-Reply-To: <CAJZOPZ+TJ7JLdvmh7a9mNAp0bujv0jQBG+5Aq9aU9MEVOJobeA@mail.gmail.com>

Or Gerlitz <or.gerlitz@gmail.com> wrote:

>On Sun, Aug 5, 2012 at 12:23 AM, Or Gerlitz <or.gerlitz@gmail.com>
>wrote:
>
>> The idea in eIPoIB was to allow IP apps running on VMs under a
>Para-Virtual set of
>> mind, e.g when the Linux PV networking stack comes into play, to use
>that stack w.o > modifying it. When looking on that, we thought so far
>so good, and went in the way
>> posted here. If reusing your last sentence... this driver provides a
>way for apps to use
>> the PV stack AND IB whilst using something familiar, like IPv4.
>
>OK, when I said the PV stack, I meant the portion of the PV stack
>which assumes Ethernet link layer, ofcourse... If someone uses routing
>they don't need this driver.
>
>Again, since the app only uses IP,  which is well defined, etc. the
>work done by the eipoib driver, didn't seem as hackish messing, so I'm
>again with that WW (Why/What) question from 5m ago.


Something is missing from your sentence. 

What is the alternative that you view as worse?

Juast as a point of information.  In general when bridging is desired but not possible people deploy proxy arp.

I completely fail to see how having the VM output to a tun interface and then routing that, would not be supported by current solutions.  I believe that is where VM solutions all started networking wise.  Outputting to an interface is needed to support interfaces like 802.11 where bridging frequently does not work.

Eric

  reply	other threads:[~2012-08-04 23:19 UTC|newest]

Thread overview: 71+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-08-01 17:09 [PATCH V2 00/12] Add Ethernet IPoIB driver Or Gerlitz
2012-08-01 17:09 ` [PATCH V2 01/12] IB/ipoib: Add rtnl_link_ops support Or Gerlitz
2012-08-01 17:09 ` [PATCH V2 02/12] IB/ipoib: Add support for clones / multiple childs on the same partition Or Gerlitz
2012-08-01 17:09 ` [PATCH V2 03/12] include/linux: Add private flags for IPoIB interfaces Or Gerlitz
2012-08-01 17:09 ` [PATCH V2 04/12] IB/ipoib: Add support for acting as VIF Or Gerlitz
2012-08-01 17:09 ` [PATCH V2 05/12] net: Add ndo_set_vif_param operation to serve eIPoIB VIFs Or Gerlitz
2012-08-02  0:17   ` Ben Hutchings
2012-08-02  8:25     ` Erez Shitrit
2012-08-01 17:09 ` [PATCH V2 06/12] net/core: Add rtnetlink support to vif parameters Or Gerlitz
2012-08-02  0:20   ` Ben Hutchings
2012-08-02 15:29     ` Erez Shitrit
2012-08-01 17:09 ` [PATCH V2 07/12] net/eipoib: Add private header file Or Gerlitz
2012-08-01 17:09 ` [PATCH V2 08/12] net/eipoib: Add ethtool file support Or Gerlitz
2012-08-02  0:22   ` Ben Hutchings
2012-08-02  8:35     ` Erez Shitrit
2012-08-02 15:42       ` Ben Hutchings
2012-08-01 17:09 ` [PATCH V2 09/12] net/eipoib: Add main driver functionality Or Gerlitz
2012-08-02 17:15   ` Eric W. Biederman
2012-08-03 20:31     ` Ali Ayoub
2012-08-03 21:33       ` David Miller
2012-08-03 22:39         ` Ali Ayoub
2012-08-03 23:36           ` David Miller
2012-08-04 21:23             ` Or Gerlitz
2012-08-04 21:44               ` Or Gerlitz
2012-08-04 23:19                 ` Eric W. Biederman [this message]
2012-08-07  0:14             ` Ali Ayoub
2012-08-07  0:44               ` Eric W. Biederman
2012-08-07  1:21                 ` Re[2]: " Naoto MATSUMOTO
2012-08-15  9:10                   ` Re[3]: " Naoto MATSUMOTO
2012-08-07  3:33                 ` Eric W. Biederman
2012-08-08  6:04                   ` Or Gerlitz
2012-08-08  8:36                     ` Eric W. Biederman
2012-08-09  4:06                       ` Or Gerlitz
2012-08-12 14:05                         ` Michael S. Tsirkin
2012-08-07  3:37                 ` Joseph Glanville
2012-08-08  7:32                 ` Or Gerlitz
2012-08-08  9:17                   ` Eric W. Biederman
2012-08-09  4:34                     ` Or Gerlitz
2012-08-12 10:36                       ` Michael S. Tsirkin
2012-08-04  0:02           ` Ali Ayoub
2012-08-04  0:05             ` David Miller
2012-08-04  1:34             ` Eric W. Biederman
2012-08-04 21:33               ` Or Gerlitz
2012-08-05 18:50     ` Michael S. Tsirkin
2012-08-08  5:23       ` Or Gerlitz
2012-08-12 10:22         ` Michael S. Tsirkin
2012-08-12 13:09           ` Or Gerlitz
2012-08-12 13:41             ` Michael S. Tsirkin
2012-08-12 13:15           ` Or Gerlitz
2012-08-12 13:55             ` Michael S. Tsirkin
2012-08-12 14:13               ` Or Gerlitz
2012-08-12 20:54                 ` Michael S. Tsirkin
2012-08-14  8:44                   ` Or Gerlitz
2012-08-20 18:57                   ` Michael S. Tsirkin
2012-08-23  6:45                     ` Or Gerlitz
2012-08-14  7:41               ` Or Gerlitz
2012-08-12 10:54         ` Michael S. Tsirkin
2012-08-12 13:19           ` Or Gerlitz
2012-08-12 15:40         ` Eric W. Biederman
2012-08-13  8:33           ` Or Gerlitz
2012-08-13 16:08             ` Eric W. Biederman
2012-09-03 20:53       ` Or Gerlitz
2012-09-03 21:22         ` Michael S. Tsirkin
2012-09-04 18:50           ` Or Gerlitz
2012-09-04 19:31             ` Eric W. Biederman
2012-09-04 19:47               ` Or Gerlitz
2012-09-04 21:21             ` Michael S. Tsirkin
2012-09-04 18:57           ` Or Gerlitz
2012-08-01 17:09 ` [PATCH V2 10/12] net/eipoib: Add sysfs support Or Gerlitz
2012-08-01 17:09 ` [PATCH V2 11/12] net/eipoib: Add Makefile, Kconfig and MAINTAINERS entries Or Gerlitz
2012-08-01 17:09 ` [PATCH V2 12/12] IB/ipoib: Add support for transmission of skbs w.o dst/neighbour Or Gerlitz

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