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 5466346C6F; Fri, 8 Aug 2025 18:59:34 +0200 (CEST) Received: from mails.dpdk.org (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 0897340A6F; Fri, 8 Aug 2025 18:59:03 +0200 (CEST) Received: from mail-wr1-f48.google.com (mail-wr1-f48.google.com [209.85.221.48]) by mails.dpdk.org (Postfix) with ESMTP id 4B5CC406B7 for ; Fri, 8 Aug 2025 18:59:01 +0200 (CEST) Received: by mail-wr1-f48.google.com with SMTP id ffacd0b85a97d-3b78d337dd9so1457601f8f.3 for ; Fri, 08 Aug 2025 09:59:01 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=networkplumber-org.20230601.gappssmtp.com; s=20230601; t=1754672341; x=1755277141; darn=dpdk.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=8JBnpPYalxjvG7xml7r8CXLliDz8gCzqjgPTUVLzfGo=; b=sKuQX/xU01uVt4fUPI1FIZxhjX0WsGj9Mh+fGUq5rI4bC03bCT+1MQiActBa/ypbgF 1dpmfZjpdLcyauonMXlo+slcxfhA87QFO3hN3vIZ+SavVzdSUN3Ns2uauls1ovdv1/0R Grt8RAUBEOvM8TdJMI5/LUHltNW8UfuG3t7EC5e2NUOJYjSt6ollBvzdOg68+Y1zbTK+ R8PZP/iSAYGKYUED4YL8z8RZ2hmQhF+ouVfBfHpW/dXaCrkEHAEoC56as+yxILiAlY5v HSxFIFgqjPEFCo+CJ2n8BaoVrx3dDsWgLr8+X78KCcHGGpcheP19Ebiji92WKTucMg2v 8qwg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1754672341; x=1755277141; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=8JBnpPYalxjvG7xml7r8CXLliDz8gCzqjgPTUVLzfGo=; b=QBLUa9keZjGSKFm8397k6z5i2WHbewgtDXoMdd+Cz7YU0iz7/iakzez2Zvqt8ICQIT k+PDyJQUrINKg/B9W1bHhkLArZHanq+TLepZlVdIeu6xANVTmiWj3YGH9i4W7VwU3lXq AqjjmjVnSQh4WKrcqFE4lSiavdI5zfzn08/B7JyHNBfZJGxrbH93F8GRrkGhyhYxt/uG 78/SBqXYGvbRqek3Xal9DeQXRK4Ey5Dq8VDVi0USyJiwJ06PK8diKrOzsO0Xmd49s0fz 4K2oDxdJEFMSPQgQN5L67RjspqJ+s12fqGFYTRK9vcDzb2ZzUFmiv2nzCm0FwtVyuNx8 9AFw== X-Gm-Message-State: AOJu0YzSHdy/hFE03Fuc8bnYb0I4ac4TqPVjZCDJHzxvo8stI5AzerSD SEPec8V1/g4hMD41ezxjwAUAdn7J0wkhUExc8aQVdEG5FOzNb41Ydef+6Q2WUe+3egH/FUpAX2x VcIjF X-Gm-Gg: ASbGncusHBp6U2jou5VDJUomzQ+fCp/ibw6MPeRVCgSLHC8vuIaOZINoHQNtZQpZTtG rkKNDt8YOgz4y+JbZ4XStjEPLKaF64wc0RrSSajL1LpEJ2rE4cWSx2sX55LJY4w+yKUZUogb4/e V7gi8P6h88f+P/FuCv6l9cZ16wObiJqzT0MnywcFLKt69+l6DtSMvYc88+1M1eSOsW7LwZEPkum 3w9SGPGa9mCcFgvKP6sbv5WRKUOkoFn7Gh5qDmnRQ6YCvczrDAm/o2OEe/TwlI1Ca8cx9okC43R T9jQ19Cah0OTIBJFFGKDYcc7HmL7+sVnHCJa5KYAje+hJypk539Az/s3i7eo7Tki7wWMjAL3mmE Q0NJ4EC/5ugzmvU5WuUzGqdJ87Vc+Dg7gwVHNJm3Ll/uG2MDQR28pBaX3tu673B8vEYeq0Toj X-Google-Smtp-Source: AGHT+IFzWuBQXcJfLxISVS9J5cd/G6qB2kTE+ku8GOEQRpVJ5iEsLEcw9UJ/PRGZpghNScHHdERmZw== X-Received: by 2002:a5d:5d0c:0:b0:3b4:9721:2b32 with SMTP id ffacd0b85a97d-3b90092c994mr3173965f8f.10.1754672340877; Fri, 08 Aug 2025 09:59:00 -0700 (PDT) Received: from hermes.lan (204-195-96-226.wavecable.com. [204.195.96.226]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-3b79c3ac115sm30997531f8f.12.2025.08.08.09.58.59 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 08 Aug 2025 09:59:00 -0700 (PDT) From: Stephen Hemminger To: dev@dpdk.org Cc: Stephen Hemminger , Bruce Richardson Subject: [PATCH v11 06/14] net/ring: allow lockfree transmit if ring supports it Date: Fri, 8 Aug 2025 09:55:44 -0700 Message-ID: <20250808165843.39075-7-stephen@networkplumber.org> X-Mailer: git-send-email 2.47.2 In-Reply-To: <20250808165843.39075-1-stephen@networkplumber.org> References: <20250411234927.114568-1-stephen@networkplumber.org> <20250808165843.39075-1-stephen@networkplumber.org> 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 List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Need to be able have multiple threads all using same transmit queue when using SPAN. Signed-off-by: Stephen Hemminger --- drivers/net/ring/rte_eth_ring.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/drivers/net/ring/rte_eth_ring.c b/drivers/net/ring/rte_eth_ring.c index b1085bf390..966c64d9a5 100644 --- a/drivers/net/ring/rte_eth_ring.c +++ b/drivers/net/ring/rte_eth_ring.c @@ -177,6 +177,19 @@ eth_tx_queue_setup(struct rte_eth_dev *dev, uint16_t tx_queue_id, return 0; } +static bool +eth_tx_queue_lockfree(const struct pmd_internals *internals) +{ + unsigned int i; + + for (i = 0; i < internals->max_tx_queues; i++) { + const struct ring_queue *r = &internals->tx_ring_queues[i]; + + if (r->rng->flags & RING_F_SP_ENQ) + return false; + } + return true; +} static int eth_dev_info(struct rte_eth_dev *dev, @@ -189,6 +202,10 @@ eth_dev_info(struct rte_eth_dev *dev, dev_info->max_rx_queues = (uint16_t)internals->max_rx_queues; dev_info->rx_offload_capa = RTE_ETH_RX_OFFLOAD_SCATTER; dev_info->tx_offload_capa = RTE_ETH_TX_OFFLOAD_MULTI_SEGS; + + if (eth_tx_queue_lockfree(internals)) + dev_info->tx_offload_capa |= RTE_ETH_TX_OFFLOAD_MT_LOCKFREE; + dev_info->max_tx_queues = (uint16_t)internals->max_tx_queues; dev_info->min_rx_bufsize = 0; -- 2.47.2