Are ./valte-ctl and ./bridge friends or competitors?

Olivier Cochard-Labbé olivier at freebsd.org
Fri Mar 17 22:43:31 UTC 2017


On Fri, Mar 17, 2017 at 6:51 PM, Vincenzo Maffione <v.maffione at gmail.com>
wrote:

>
> When using your physical NICs with netmap, you need to disable the
> offloadings because netmap is not able to program the NIC to perform these
> offloadings. This is a design decision that has been taken to preserve
> simplicity and efficiency.
>

​Hi,

What do you mean by efficiency ?
For the netmap's pkt-gen tool, the option of using range for source or
destination IP address has some big impact because the software checksum
calculation.
Hopefully the Chelsio drivers allow to re-enable checksum offloading​ in
netmap mode: This is mandatory for reaching 10G line-rate with pkt-gen
(with the range option).

Regards,

Olivier


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