From mboxrd@z Thu Jan 1 00:00:00 1970 From: Kevin Traynor Subject: Re: [PATCH 1/2] app/testpmd: add custom topology command Date: Wed, 16 May 2018 13:40:34 +0100 Message-ID: References: Mime-Version: 1.0 Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit Cc: Raslan Darawsheh , "dev@dpdk.org" , Shahaf Shuler To: Wisam Monther , "jingjing.wu@intel.com" , "wenzhuo.lu@intel.com" , Thomas Monjalon Return-path: Received: from mx1.redhat.com (mx3-rdu2.redhat.com [66.187.233.73]) by dpdk.org (Postfix) with ESMTP id 3A5CE1B024 for ; Wed, 16 May 2018 14:40:38 +0200 (CEST) In-Reply-To: Content-Language: en-US List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" On 05/15/2018 03:05 PM, Wisam Monther wrote: > Hey Kevin, > > What if I have 10 ports and want all 9 ports to forward packets to port > 0, this cannot done in paired. > But with this topo the user can overwrite the topo. > E.g: > - Set custom-topo 1 0 > Will make those paired and those two as active only. > > - set custom-topo 2 0 > Will make those two as paired, but still port one will forward packets > to 0. > And the active ports will be 3 ports (0,1,2) > And so on... > With this topo you can create your own topo. (Mixed between all topos or > even non-pattern topo for any usage) > In my case its needed for representors and virtio. > > Any traffic coming from representors/vhost (from VM) need to be > forwarded from PF/phy port to the wire. > Thanks for sharing the use case. Will it be an issue that multiple cores may be sending to the same TxQ? I didn't check to see if there is locking provided in the app. > This new topo is useful for such cases. > > BRs, > Wisam jaddo >