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[204.195.96.226]) by smtp.gmail.com with ESMTPSA id fe12-20020a056a002f0c00b006ea918dab9csm19369602pfb.157.2024.04.29.08.33.47 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 29 Apr 2024 08:33:47 -0700 (PDT) Date: Mon, 29 Apr 2024 08:33:45 -0700 From: Stephen Hemminger <stephen@networkplumber.org> To: Morten =?UTF-8?B?QnLDuHJ1cA==?= <mb@smartsharesystems.com> Cc: Mattias =?UTF-8?B?UsO2bm5ibG9t?= <hofors@lysator.liu.se>, "Ferruh Yigit" <ferruh.yigit@amd.com>, "Thomas Monjalon" <thomas@monjalon.net>, "Andrew Rybchenko" <andrew.rybchenko@oktetlabs.ru>, <dev@dpdk.org>, <stable@dpdk.org>, Mattias =?UTF-8?B?UsO2bm5ibG9t?= <mattias.ronnblom@ericsson.com> Subject: Re: [PATCH] ethdev: document that stats reset APIs are not thread-safe Message-ID: <20240429083345.4a2be5af@hermes.local> In-Reply-To: <98CBD80474FA8B44BF855DF32C47DC35E9F3FF@smartserver.smartshare.dk> References: <20240425165308.1078454-1-ferruh.yigit@amd.com> <98CBD80474FA8B44BF855DF32C47DC35E9F3F7@smartserver.smartshare.dk> <20240426081334.1a24577d@hermes.local> <98CBD80474FA8B44BF855DF32C47DC35E9F3FA@smartserver.smartshare.dk> <1a65e90a-a54b-4584-bc00-a568d7c11f78@lysator.liu.se> <98CBD80474FA8B44BF855DF32C47DC35E9F3FF@smartserver.smartshare.dk> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-BeenThere: stable@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: patches for DPDK stable branches <stable.dpdk.org> List-Unsubscribe: <https://mails.dpdk.org/options/stable>, <mailto:stable-request@dpdk.org?subject=unsubscribe> List-Archive: <http://mails.dpdk.org/archives/stable/> List-Post: <mailto:stable@dpdk.org> List-Help: <mailto:stable-request@dpdk.org?subject=help> List-Subscribe: <https://mails.dpdk.org/listinfo/stable>, <mailto:stable-request@dpdk.org?subject=subscribe> Errors-To: stable-bounces@dpdk.org On Mon, 29 Apr 2024 08:20:13 +0200 Morten Br=C3=B8rup <mb@smartsharesystems.com> wrote: > > turn talk the control plane, which in turn would talk to the data plane > > (including <rte_ethdev.h>). > >=20 > > Either the control plane or the O&M layer could keep track of a reset > > offset. Doesn't have to be on the PMD level. =20 >=20 > Exactly. >=20 > Snapshotting the "reset" offset in the control plane has many advantages. >=20 > Let's promote that design pattern, rather than trying to work around diff= erent quirks required by different drivers. >=20 The other thing that can help in software drivers is keeping per-queue stat= s.