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 3287FA0547 for ; Fri, 10 Sep 2021 11:57:51 +0200 (CEST) Received: from [217.70.189.124] (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 0848D406B4; Fri, 10 Sep 2021 11:57:51 +0200 (CEST) Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [216.205.24.124]) by mails.dpdk.org (Postfix) with ESMTP id 8AFE0406B4 for ; Fri, 10 Sep 2021 11:57:49 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1631267868; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=QmiAHEJp1YI81x2SpWBHhySOiteCUi6v6YaZiOov8h4=; b=Yv11stejlreAi2xYXzvS3PGGSi+xkYrHtyUvTDTY3cMhE9F2y2TGDa2CfpEpYeFLy7NeEo hzcz3ZeDFo8H7AIx7ysQNo8pZk3JsBFtJzPghah7gMoNWQP5NV11K/PTwMdMRuNnZsKPqX ADoPiA7MFvPEyWPRAusZctX0GxHmqn4= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-343-dGa4eX0jM5-FRAXnVQBiMQ-1; Fri, 10 Sep 2021 05:57:47 -0400 X-MC-Unique: dGa4eX0jM5-FRAXnVQBiMQ-1 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 21B5280006E; Fri, 10 Sep 2021 09:57:46 +0000 (UTC) Received: from [10.39.208.12] (unknown [10.39.208.12]) by smtp.corp.redhat.com (Postfix) with ESMTPS id CF7DF83BE4; Fri, 10 Sep 2021 09:57:39 +0000 (UTC) To: Andrew Rybchenko , dev@dpdk.org, chenbo.xia@intel.com, amorenoz@redhat.com, david.marchand@redhat.com, ferruh.yigit@intel.com, michaelba@nvidia.com, viacheslavo@nvidia.com Cc: stable@dpdk.org, nelio.laranjeiro@6wind.com References: <20210910091734.7023-1-maxime.coquelin@redhat.com> <20210910091734.7023-3-maxime.coquelin@redhat.com> From: Maxime Coquelin Message-ID: <7548b2d2-fd23-4a1a-59d7-b3424912afcc@redhat.com> Date: Fri, 10 Sep 2021 11:57:37 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.11.0 MIME-Version: 1.0 In-Reply-To: X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=maxime.coquelin@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Subject: Re: [dpdk-stable] [PATCH 2/3] app/testpmd: fix RSS hash type update X-BeenThere: stable@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: patches for DPDK stable branches List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: stable-bounces@dpdk.org Sender: "stable" On 9/10/21 11:51 AM, Andrew Rybchenko wrote: > On 9/10/21 12:17 PM, Maxime Coquelin wrote: >> port_rss_hash_key_update() initializes rss_conf with the >> RSS hash type and key provided by the user, but it calls >> rte_eth_dev_rss_hash_conf_get() before calling >> rte_eth_dev_rss_hash_update(), which overides the parsed >> config with current NIC's config. >> >> While the RSS key value is set again after, this is not >> the case of the key length and the type of hash. >> >> There is no need to read the RSS config from the NIC, let's >> just try to set the user defined one. >> >> Fixes: 8205e241b2b0 ("app/testpmd: add missing type to RSS hash commands") >> Cc: stable@dpdk.org >> Cc: nelio.laranjeiro@6wind.com >> >> Signed-off-by: Maxime Coquelin >> --- >> app/test-pmd/config.c | 8 ++------ >> 1 file changed, 2 insertions(+), 6 deletions(-) >> >> diff --git a/app/test-pmd/config.c b/app/test-pmd/config.c >> index 31d8ba1b91..451bda53b1 100644 >> --- a/app/test-pmd/config.c >> +++ b/app/test-pmd/config.c >> @@ -2853,18 +2853,14 @@ port_rss_hash_key_update(portid_t port_id, char rss_type[], uint8_t *hash_key, >> int diag; >> unsigned int i; >> >> - rss_conf.rss_key = NULL; >> + rss_conf.rss_key = hash_key; >> rss_conf.rss_key_len = hash_key_len; >> rss_conf.rss_hf = 0; >> for (i = 0; rss_type_table[i].str; i++) { >> if (!strcmp(rss_type_table[i].str, rss_type)) >> rss_conf.rss_hf = rss_type_table[i].rss_type; >> } >> - diag = rte_eth_dev_rss_hash_conf_get(port_id, &rss_conf); >> - if (diag == 0) { >> - rss_conf.rss_key = hash_key; >> - diag = rte_eth_dev_rss_hash_update(port_id, &rss_conf); >> - } >> + diag = rte_eth_dev_rss_hash_update(port_id, &rss_conf); > > I'm not 100% sure, but I'd say the intent above could be > to update key only as the function name says. I.e. keep > rss_hf as is. That could be the reason to get first. > I think that was the intial purpose of the command, but patch 8205e241b2b0 added setting the hash type as mandatory. There are no other command to configure the hash type from testpmd AFAICT. Also, even without 8205e241b2b0, the function was broken because the key length was overiden. Regards, Maxime