From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: <dev-bounces@dpdk.org> Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id 7B5054418F; Sun, 16 Jun 2024 19:39:01 +0200 (CEST) Received: from mails.dpdk.org (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 87E4B40263; Sun, 16 Jun 2024 19:38:59 +0200 (CEST) Received: from mail-lf1-f54.google.com (mail-lf1-f54.google.com [209.85.167.54]) by mails.dpdk.org (Postfix) with ESMTP id 379FB40042 for <dev@dpdk.org>; Sun, 16 Jun 2024 19:38:58 +0200 (CEST) Received: by mail-lf1-f54.google.com with SMTP id 2adb3069b0e04-52bd48cf36bso4331860e87.3 for <dev@dpdk.org>; Sun, 16 Jun 2024 10:38:58 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1718559537; x=1719164337; darn=dpdk.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=j4ZglzofgZIWaDJhlSnnZaiWFKNpbWe4P/e7zuqRWR0=; b=RIMRDQvHB+eGTJqjfvAqWe2o4z+EbWq7SH8JLKhEObpAkYBNeunP+rDyawmsv2fXus 4auWta3IA0QG67glpGHXW5yf8tv9YEmu73RZ+HJ2LUk+/Jm987lRKPiOERJeCAxSGhi/ rHzOZPYiP8JsNR0REKrbZEKRqrtL4QIZUia0WJU4T4TZa8LDXQdDhm+Y1yWzyieOQ+eL PB/1Q4mbAEaGRu45VrRIsg+20COxnRSNXgHr8YpxDnc7fvEPgWcs9zLE/9kOD6LosPig D+4o+KB9/fL00EGQ9oPPO6CXplx/y+Ct2ydMl6i+LuXSD+STolWakTV0T3w0VRMnNu1O vp0w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1718559537; x=1719164337; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=j4ZglzofgZIWaDJhlSnnZaiWFKNpbWe4P/e7zuqRWR0=; b=fiXC91Tf2lG/HLdK55UkLAmYO6la3EI/blA2eVpBNfFYuhyvsyJlNzLnrmy34oShha SDYYWZJMT82eavxjyyu2ZFxkd/WTIFxAAd52oBP7wloTRYGzjaHVXAy35lrWUGhwjzHa +sKONiowe0LLRxYzRJZIbWSAe/WgqgcjcvXAtgkvsj2FrG5hMCJuATZvR0UqdlyCRS/N GHAEqfc9+I71OGiqsA9bfJO5u7t0lEp8yNbzIeivZghunyUJckv0mzo+gl5jW0r3cKNf Q9LSB4cmNygcofFCKw11dKifRDagqxGK4g3eOGgIDLStMa+O50syikX3aywOS9IP5tTG mSVQ== X-Gm-Message-State: AOJu0YxNW23KYnlZ9ZF+23nGZPLiIo5M24qwN0hWlmg1MAqqu7/QLWO1 1BjAsKmIut+BRp1851d+3RzDnYT4kJdi02GgCrJDDUKpnOZW5qu5 X-Google-Smtp-Source: AGHT+IGWmBBok8ZZwznUrfOCOHsPdjLdcaZObQA2syE3TD3Nku8+W2feq1FDXb5YRgSzYZFJsoY7Gg== X-Received: by 2002:a05:6512:4846:b0:52b:c1f1:5809 with SMTP id 2adb3069b0e04-52ca6e6e3e6mr5723311e87.39.1718559535205; Sun, 16 Jun 2024 10:38:55 -0700 (PDT) Received: from saturn.. ([85.172.100.87]) by smtp.gmail.com with ESMTPSA id 2adb3069b0e04-52ca28720a1sm1030208e87.141.2024.06.16.10.38.54 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 16 Jun 2024 10:38:54 -0700 (PDT) From: Igor Gutorov <igootorov@gmail.com> To: dsosnowski@nvidia.com, viacheslavo@nvidia.com, orika@nvidia.com, suanmingm@nvidia.com, matan@nvidia.com Cc: dev@dpdk.org, Igor Gutorov <igootorov@gmail.com> Subject: [PATCH 0/1] net/mlx5: show rx/tx descriptor ring limitations in rte_eth_dev_info Date: Sun, 16 Jun 2024 20:38:02 +0300 Message-ID: <20240616173803.424025-1-igootorov@gmail.com> X-Mailer: git-send-email 2.45.2 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions <dev.dpdk.org> List-Unsubscribe: <https://mails.dpdk.org/options/dev>, <mailto:dev-request@dpdk.org?subject=unsubscribe> List-Archive: <http://mails.dpdk.org/archives/dev/> List-Post: <mailto:dev@dpdk.org> List-Help: <mailto:dev-request@dpdk.org?subject=help> List-Subscribe: <https://mails.dpdk.org/listinfo/dev>, <mailto:dev-request@dpdk.org?subject=subscribe> Errors-To: dev-bounces@dpdk.org Hello, This patch fixes an issue with my ConnectX5 NIC (15b3:1019) showing 65535 as the maximum number of RX descriptors. So, a disclaimer: I don't know whether other NICs (ConnectX6?) allow larger values. The value of 8192 was obtained experimentally with ethtool: ethtool -G *nic* rx 8192, as I do not have the NIC programmer's manual. Using anything larger than 8192 resulted in an error. Similarly, anything in the [8193, 32768) range with the DPDK PMD results in an rx queue allocation failure. Igor Gutorov (1): net/mlx5: show rx/tx descriptor ring limitations in rte_eth_dev_info drivers/net/mlx5/mlx5_defs.h | 3 +++ drivers/net/mlx5/mlx5_ethdev.c | 5 ++++- 2 files changed, 7 insertions(+), 1 deletion(-) -- 2.45.2