From mboxrd@z Thu Jan 1 00:00:00 1970 From: Hal Rosenstock Subject: Re: [PATCH 3/3] IB core: Display 64 bit counters from the extended set Date: Tue, 15 Dec 2015 15:01:03 -0500 Message-ID: <5670717F.9090701@dev.mellanox.co.il> References: <20151211182532.332343651@linux.com> <20151211182543.329283794@linux.com> <20151211235630.GG7855@phlsvsds.ph.intel.com> <20151212000047.GA9961@obsidianresearch.com> <566EEE69.5080906@dev.mellanox.co.il> <20151215195554.GA28167@obsidianresearch.com> Mime-Version: 1.0 Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20151215195554.GA28167-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org> Sender: linux-rdma-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Jason Gunthorpe , Christoph Lameter Cc: "ira.weiny" , dledford-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org, linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: linux-rdma@vger.kernel.org On 12/15/2015 2:55 PM, Jason Gunthorpe wrote: > On Tue, Dec 15, 2015 at 01:51:35PM -0600, Christoph Lameter wrote: >> On Mon, 14 Dec 2015, Hal Rosenstock wrote: >> >>>> Mellanox should really confirm this for their hardware matrix. >>> >>> I am trying to get definitive answer to this. >> >> I was told today on a conf call with a couple of Mellanox employees that >> extended counters are always available. > > .. and every field is valid? > > I would agree, from my observation, that the two main byte counters > are always available. The extended packet counts work but I thought there was a PMA with one of the extended byte counts wired to 0. > But not necessarily the others. The unicast/multicast extended counters are not always supported - depends on setting of PerfMgt ClassPortInfo CapabilityMask.IsExtendedWidthSupportedNoIETF (bit 10). -- Hal > Jason -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html