[dpdk-dev] [PATCH v2 0/5] add dpdk packet capture support for tcpdump

[Pattan, Reshma]

Hi,

> -----Original Message-----
> From: Pavel Fedin [mailto:p.fedin at samsung.com]
> Sent: Thursday, February 18, 2016 2:08 PM
> To: Pattan, Reshma <reshma.pattan at intel.com>; dev at dpdk.org
> Subject: RE: [dpdk-dev] [PATCH v2 0/5] add dpdk packet capture support for
> tcpdump
> 
> 
>  1. Perhaps, ability to separate queues is useful for something. But not always.
> For example, what if i want to capture all the traffic which passes through some
> interface (common use case)? For example, with OpenVSwitch i can have 9
> queues on my networking card. So, i have to enumerate all of them:
> (0,0)(0,1)(0,2)... It's insane and inconvenient with many queues. What if you
> could have shorthand notation, like (0) or (0,*) for this?

I will fix this in my next version of patch.

>  2. What if i don't want separate RX and TX streams either? It only prevents me
> from seeing the complete picture.

Do you mean not to have separate pcap files for tx and rx? If so, I would prefer to keep this as it is.
Because pcap changes need to be replaced with TUN/TAP pmd once available in future. 

>  3. vhostuser ports are missing. Perhaps not really related to this patchset, i just
> don't know how much code "server" part of vhostuser shares with normal PMDs,
> but anyway, ability to dump them too would be nice to have.
> 

I think this can be done in future i.e. when vhost as PMD is available. But as of now vhost is library.

>  Not directly related, but could we have some interface to tcpdump or
> wireshark? Would be good to have ability to dump packets in real time.

This  can be done in future once KNI or TUN/TAP PMDs is  available in DPDK.

Thanks,
Reshma