[ovs-discuss] packet from userspace

[thasleem palara]

Thanks Justin.

I have gone through the OVS code and I see the fucntion "nl_sock_create" is
called from these fucntions

1.do_lookup_genl_family : (protocol for socket creation : NETLINK_GENERIC)

2. nl_pool_alloc : ( protocol : NETLINK_ROUTE)

3. netdev_linux_notify_sock : ( protocol : NETLINK_ROUTE) for notifying the
changes in ports

So I assume that "nl_pool_alloc"  is the fucntion asks for packets from
kernal module.

Please correct me if I'm wrong.




On Tue, Jan 7, 2014 at 6:01 AM, Justin Pettit <jpettit at nicira.com> wrote:

> I don't understand what you're trying to do.  You started the thread
> talking about handling flows through an IPC socket.
>
> --Justin
>
>
>
> On Sun, Jan 5, 2014 at 3:04 AM, thasleem palara <thasleemp at gmail.com>wrote:
>
>> Justin, I'm trying OVS without kernel module, and I just want to know the
>> working of OVS without kernal module.
>> So I planned to check, which part of source is listening for packet  in
>> userspace. Can u please help me by pointing the
>> code where userspace is listening for packet.
>>
>>
>> On Sun, Jan 5, 2014 at 2:46 AM, Justin Pettit <jpettit at nicira.com> wrote:
>>
>>> Why are you trying to modify the OVS code?  You can't accomplish what
>>> you want with OpenFlow?
>>>
>>> --Justin
>>>
>>>
>>> On Jan 4, 2014, at 5:31 AM, thasleem palara <thasleemp at gmail.com> wrote:
>>>
>>> justin,
>>> Thanks for the sudden reply. What I'm trying is, to send a DHCP or ARP
>>> packet (which is hard-coded by me) to OVS through any method (like socket
>>> programming). But Still I'm not able to  find the code in OVS where I can
>>> change to listen for my packet.
>>> All I knew is ,handle_upcalls() function handles the packet form kernal
>>> space.
>>> Can u please help me on this.
>>>
>>> Thanks
>>>
>>>
>>> On Sat, Jan 4, 2014 at 2:04 AM, Justin Pettit <jpettit at nicira.com>wrote:
>>>
>>>> You can use the "packet-out" message, if you've got an OpenFlow
>>>> connection to the switch.  If you're just looking to script something, you
>>>> can use the "packet-out" command in ovs-ofctl.
>>>>
>>>> --Justin
>>>>
>>>>
>>>>
>>>>
>>>> On Fri, Jan 3, 2014 at 11:50 AM, thasleem palara <thasleemp at gmail.com>wrote:
>>>>
>>>>> Is it possible to send packet into OVS through Userspace , I mean
>>>>> through ipc socket programming. Please help...
>>>>>
>>>>> _______________________________________________
>>>>> discuss mailing list
>>>>> discuss at openvswitch.org
>>>>> http://openvswitch.org/mailman/listinfo/discuss
>>>>>
>>>>>
>>>>
>>>
>>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://openvswitch.org/pipermail/ovs-discuss/attachments/20140107/fd196c1c/attachment.html>