From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id 9AC4441FD5; Thu, 31 Aug 2023 02:10:35 +0200 (CEST) Received: from mails.dpdk.org (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 25D3B40285; Thu, 31 Aug 2023 02:10:35 +0200 (CEST) Received: from mail-pg1-f173.google.com (mail-pg1-f173.google.com [209.85.215.173]) by mails.dpdk.org (Postfix) with ESMTP id E722640144 for ; Thu, 31 Aug 2023 02:10:32 +0200 (CEST) Received: by mail-pg1-f173.google.com with SMTP id 41be03b00d2f7-565e387000fso247817a12.2 for ; Wed, 30 Aug 2023 17:10:32 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=broadcom.com; s=google; t=1693440632; x=1694045432; darn=dpdk.org; h=cc:to:subject:message-id:date:from:in-reply-to:references :mime-version:from:to:cc:subject:date:message-id:reply-to; bh=tFxMo/ZONP9M8KRF0mSOep6UoFmrMjl69dEByM0+Y0Y=; b=YNiOPZ1RLtZkcOMU0BmzueeCzILWIwvh2FswAXz0v+RkUDURUezCTASw8UOcjA2HiP 2AAeEPnzJWtU6lRXJuiNVAw3CD8cyo86kcKMD8jDLp2ZAAaSvlQxTrEsASSOlqvZyvOT KvkDCkb3TONC/NTQUddCKYT6fDm3pIgoHFkxc= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1693440632; x=1694045432; h=cc:to:subject:message-id:date:from:in-reply-to:references :mime-version:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=tFxMo/ZONP9M8KRF0mSOep6UoFmrMjl69dEByM0+Y0Y=; b=c66UpCQNdfTNDmkqGQjcZouH28bZ+3/iQPnPyBHWOHDMuJmmAND0JjoboOIqfBwK3O EaHQ6RgTaO96Tajn3tRiyPwsR3hcQOmBVZcgRv7w5msi6pKryO6PNqSocCenHgRt/QMg 4O2n9Cai7ivCaEOJpN4GTtuL4zjJzijm0pJH3kzePJ1U2wzQ2dGkMQK0E6I+AfhOlzRW egBT4JkXBqWBKQkMl5XIHuuv3KX/KsxGrGiqeyvUJgrzs4x/ABEPrCfRtl5lJEnI4zgm 5CAEHM8fMhWYvv5m8ksb0tBgzcgvwq5UPhzfKSmtIV6TPn9mSptTOLHvir5M7bdjGj8O CR5A== X-Gm-Message-State: AOJu0Yxufa2fhnOg5QQquW/o+tlBhZdifSQJBK331EiLPPnB57jUz4kS q3euGnlIWK8RGvKQ2wou/LtnyFSAa+jzkPrFyHlsjw== X-Google-Smtp-Source: AGHT+IHPXOS7nkSrenRnlaodY02O1LXCKDXi8IbVmc9tS7r2+uYhKOHWq7srqgFdkrnlR0warfquhjpP9k8zkieMPk8= X-Received: by 2002:a17:90a:8043:b0:268:2523:652c with SMTP id e3-20020a17090a804300b002682523652cmr3479457pjw.31.1693440631892; Wed, 30 Aug 2023 17:10:31 -0700 (PDT) MIME-Version: 1.0 References: <20230315110033.30143-1-liudongdong3@huawei.com> <20230826074607.16771-1-haijie1@huawei.com> <20230826074607.16771-2-haijie1@huawei.com> <1939253.PYKUYFuaPT@thomas> In-Reply-To: <1939253.PYKUYFuaPT@thomas> From: Ajit Khaparde Date: Wed, 30 Aug 2023 17:10:15 -0700 Message-ID: Subject: Re: [PATCH v2 1/5] ethdev: support setting and querying RSS algorithm To: Thomas Monjalon Cc: Jie Hai , dev@dpdk.org, Ferruh Yigit , Andrew Rybchenko , liudongdong3@huawei.com, orika@nvidia.com, jerinj@marvell.com Content-Type: multipart/signed; protocol="application/pkcs7-signature"; micalg=sha-256; boundary="00000000000054e36206042cdf88" X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org --00000000000054e36206042cdf88 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Wed, Aug 30, 2023 at 4:46=E2=80=AFAM Thomas Monjalon wrote: > > Hello, > > Thanks for bringing a new capability. > > 26/08/2023 09:46, Jie Hai: > > Currently, rte_eth_rss_conf supports configuring and querying > > rss hash functions, rss key and it's length, but not rss hash > > algorithm. > > > > The structure ``rte_eth_rss_conf`` is extended by adding a new > > field "func". This represents the RSS algorithms to apply. The > > following API is affected: > > - rte_eth_dev_configure > > - rte_eth_dev_rss_hash_update > > - rte_eth_dev_rss_hash_conf_get > > So far, the RSS algorithm was used only in flow RSS API. > > > --- a/doc/guides/rel_notes/release_23_11.rst > > +++ b/doc/guides/rel_notes/release_23_11.rst > > @@ -123,6 +123,8 @@ ABI Changes > > Also, make sure to start the actual text at the margin. > > =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D > > > > + * ethdev: Added "func" field to ``rte_eth_rss_conf`` structure for = RSS hash > > + algorithm. > > As written above, it should start at the margin. > > > --- a/lib/ethdev/rte_ethdev.h > > +++ b/lib/ethdev/rte_ethdev.h > > +#include "rte_flow.h" > > It is strange to include rte_flow.h here. > It would be better to move the enum. > > > + * The *func* field of the *rss_conf* structure indicates the hash alg= orithm > > + * applied by the RSS hashing. Passing RTE_ETH_HASH_FUNCTION_DEFAULT a= llows > > + * the PMD to use its best-effort algorithm rather than a specific one= . > > */ > > I don't like commenting a field on top of the structure. > By the way, the first sentence does not look helpful. > RTE_ETH_HASH_FUNCTION_DEFAULT may be explained in the enum. > > > struct rte_eth_rss_conf { > > uint8_t *rss_key; /**< If not NULL, 40-byte hash key. */ > > uint8_t rss_key_len; /**< hash key length in bytes. */ > > uint64_t rss_hf; /**< Hash functions to apply - see below. */ > > + enum rte_eth_hash_function func; /**< Hash algorithm to ap= ply. */ > > You can drop "to apply" words. > > How the algorithms support combinations in rss_hf? I will spend a little more time on this tomorrow. Can you update testpmd also to display the info as a part of show rss. > > --00000000000054e36206042cdf88 Content-Type: application/pkcs7-signature; name="smime.p7s" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="smime.p7s" Content-Description: S/MIME Cryptographic Signature MIIQdgYJKoZIhvcNAQcCoIIQZzCCEGMCAQExDzANBglghkgBZQMEAgEFADALBgkqhkiG9w0BBwGg gg3NMIIFDTCCA/WgAwIBAgIQeEqpED+lv77edQixNJMdADANBgkqhkiG9w0BAQsFADBMMSAwHgYD VQQLExdHbG9iYWxTaWduIFJvb3QgQ0EgLSBSMzETMBEGA1UEChMKR2xvYmFsU2lnbjETMBEGA1UE AxMKR2xvYmFsU2lnbjAeFw0yMDA5MTYwMDAwMDBaFw0yODA5MTYwMDAwMDBaMFsxCzAJBgNVBAYT AkJFMRkwFwYDVQQKExBHbG9iYWxTaWduIG52LXNhMTEwLwYDVQQDEyhHbG9iYWxTaWduIEdDQyBS MyBQZXJzb25hbFNpZ24gMiBDQSAyMDIwMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA vbCmXCcsbZ/a0fRIQMBxp4gJnnyeneFYpEtNydrZZ+GeKSMdHiDgXD1UnRSIudKo+moQ6YlCOu4t rVWO/EiXfYnK7zeop26ry1RpKtogB7/O115zultAz64ydQYLe+a1e/czkALg3sgTcOOcFZTXk38e aqsXsipoX1vsNurqPtnC27TWsA7pk4uKXscFjkeUE8JZu9BDKaswZygxBOPBQBwrA5+20Wxlk6k1 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