[dpdk-dev] [PATCH 0/3] null driver improvements for testability

Paul Atkins patkins at brocade.com
Fri Jan 29 17:47:58 CET 2016

Hi Thomas,

On 29/01/16 16:31, Thomas Monjalon wrote:
> Hi Paul,
> 2016-01-29 16:18, Paul Atkins:
>> This patchset adds functionality to the null driver help when testing
>> a dataplane that uses dpdk.  The idea is that the the dataplane can
>> have multiple null interfaces attached, and each of theses can be
>> assigned a mac address. Packets can then be injected into the null
>> drivers by adding them to a ring, giving the application complete
>> control of the packets that arrive.  Packets that are sent by a null
>> driver can be stored on a ring, where the application can pick them up
>> and verify it is what was expected.  To allow the application to know
>> when packets have been pulled of the rx ring, counters of the number of
>> times an rx poll has been made are kept, and these can be retrieved via
>> the existing APIs.
> I have not read your code, just read this description.
> It sounds like being a ring PMD. Have you already checked it?
> https://urldefense.proofpoint.com/v2/url?u=http-3A__dpdk.org_browse_dpdk_tree_drivers_net_ring_rte-5Feth-5Fring.c&d=CwICAg&c=IL_XqQWOjubgfqINi2jTzg&r=45ezphVDEm8OnEpH-fLWdXvR3RneLhhNZRDLQRgR6LY&m=wJLO24XFe_B0nZve6mkvocCt7fQWo3PULCTWxrC8rZk&s=bIWycJrY-PYgzkQsBeRfkl8JCHFcxRAHhHDrqRSzHYs&e=

I hadn't seen the ring PMD. I will have a look at it and see if I can 
make it do what i need.


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