[dpdk-dev] [PATCH 0/2] add lock-free mode for l3fwd

[Ruifeng Wang (Arm Technology China)]

> -----Original Message-----
> From: Stephen Hemminger <stephen at networkplumber.org>
> Sent: Saturday, September 7, 2019 01:29
> To: Ruifeng Wang (Arm Technology China) <Ruifeng.Wang at arm.com>
> Cc: tomasz.kantecki at intel.com; dev at dpdk.org; Gavin Hu (Arm Technology
> China) <Gavin.Hu at arm.com>; Honnappa Nagarahalli
> <Honnappa.Nagarahalli at arm.com>; nd <nd at arm.com>
> Subject: Re: [dpdk-dev] [PATCH 0/2] add lock-free mode for l3fwd
> 
> On Fri,  6 Sep 2019 18:26:13 +0800
> Ruifeng Wang <ruifeng.wang at arm.com> wrote:
> 
> > Lock-free mode is supported by hash library and LPM library.
> > Now we add an option for l3fwd example to enable the lock-free mode.
> > Necessary preparation steps are added to use lock-free LPM mode.
> 
> If lock-free mode works it should just do that.
> Having options mean that there are two test cases; which inevitably leads to
> one of them being broken.

Agree that having options will add scenarios that being tested.
Since these different scenarios are supported by Hash / LPM library, the tests on
them should be valid. 
As l3fwd application is always used to benchmark data path performance, make
both supported modes available can help user to easily collect data and compare.
In the long run, we can make lock-free mode the default used by l3fwd when it
is fine tuned.