[ovs-dev] my understanding and question about internal type device.

Jesse Gross jesse at nicira.com
Fri Mar 29 21:47:47 UTC 2013


On Fri, Mar 29, 2013 at 6:14 AM, 黄登辉 <huangdenghui at gmail.com> wrote:

>   My understanding of how internal type device work.
>        Internal type device is special. when a packet sent to internal
> type device from outside, it will immediately forward to openvswitch module
> to decide where to go?
> when a packet sent to internal type device from openvswitch module, it
> will be forwarded to internal device by netif_rx as PACKET_HOST packet.
>
> And i know, when user use ovs-dpctl add-dp dp1, it will create one same
> name internal device  dp1.
>
>   My question about why openvswitch need internal type device? what kind
> of role internal type device play at openvswitch?
>

They are needed for packets bound for the local network stack of the
machine that OVS is running on.
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