From patchwork Fri Jun 21 10:13:52 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Heng Qi X-Patchwork-Id: 13707227 X-Patchwork-Delegate: kuba@kernel.org Received: from out30-131.freemail.mail.aliyun.com (out30-131.freemail.mail.aliyun.com [115.124.30.131]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 55FEF171671; Fri, 21 Jun 2024 10:14:02 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=115.124.30.131 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1718964845; cv=none; b=AsrXkPOPFJ6G0IgOCd7o9mx1VYF+Imwa8STR2F1Zs7TzgJZlVD/NomshSiMdKh9Pv/6lEHDvwHmvojcpzFiuzgE6Am5jf2Lyy25Ub72jQMkTu7onj0nEx5AA4ODDQKKyw5TkoQHQZJTkMQIThLA841gUs2DtQq8xu26deqrmXhs= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1718964845; c=relaxed/simple; bh=lqwq5MKjhn5BSJoCvANc4Qnv3+K1tK0AUnYclRBmWJw=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=QOCUXBFhXVBcslh0lSU8TO4nafSLNz5WKmYMZGyW2q1B7ij82nmSFFoFJpKRud+f29x1Z7G4Nf8pt3nDosH0qH456o3uAIXxLFdN47cRcd6jOISJcKrNatPiHob+RoKU7kI2f+0X8z5Cj/4TiMjr7z/TJnxzqu8APZBZaiH9uG8= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.alibaba.com; spf=pass smtp.mailfrom=linux.alibaba.com; dkim=pass (1024-bit key) header.d=linux.alibaba.com header.i=@linux.alibaba.com header.b=gjqXb4zE; arc=none smtp.client-ip=115.124.30.131 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.alibaba.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.alibaba.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.alibaba.com header.i=@linux.alibaba.com header.b="gjqXb4zE" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.alibaba.com; s=default; t=1718964841; h=From:To:Subject:Date:Message-Id:MIME-Version; bh=cJZeR3Vg4FHsPtKPm6+t5ByKOyxmuqpQm7IsXDaWVrw=; b=gjqXb4zEMrX3t2DYIY6rVouOGLl665080RNk64FfjXWYRS7lyQpY4udmgq0bkwVEFfk0O2/0JnvgbfHYPc/jgmVhabrRkuRnIcSUh3Q/6mEN+OW2eQErecP8PXfhjDjY0fffZaKeKrQPXFHeAwE+tf44hpb9gKzB4m+MunFbVp4= X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R181e4;CH=green;DM=||false|;DS=||;FP=0|-1|-1|-1|0|-1|-1|-1;HT=maildocker-contentspam033068164191;MF=hengqi@linux.alibaba.com;NM=1;PH=DS;RN=32;SR=0;TI=SMTPD_---0W8w4Tf6_1718964838; Received: from localhost(mailfrom:hengqi@linux.alibaba.com fp:SMTPD_---0W8w4Tf6_1718964838) by smtp.aliyun-inc.com; Fri, 21 Jun 2024 18:13:59 +0800 From: Heng Qi To: netdev@vger.kernel.org, virtualization@lists.linux.dev Cc: Jakub Kicinski , "David S . Miller" , Paolo Abeni , Eric Dumazet , Jason Wang , "Michael S . Tsirkin" , Brett Creeley , Ratheesh Kannoth , Alexander Lobakin , Xuan Zhuo , Tal Gilboa , Jonathan Corbet , linux-doc@vger.kernel.org, Maxime Chevallier , Jiri Pirko , Paul Greenwalt , Ahmed Zaki , Vladimir Oltean , Kory Maincent , Andrew Lunn , justinstitt@google.com, donald.hunter@gmail.com, =?utf-8?q?Eugenio_P=C3=A9r?= =?utf-8?q?ez?= , Andrew Morton , Dragos Tatulea , Rahul Rameshbabu , Heiner Kallweit , Przemek Kitszel , awel Dembicki , Simon Horman Subject: [PATCH net-next v15 4/5] dim: add new interfaces for initialization and getting results Date: Fri, 21 Jun 2024 18:13:52 +0800 Message-Id: <20240621101353.107425-5-hengqi@linux.alibaba.com> X-Mailer: git-send-email 2.32.0.3.g01195cf9f In-Reply-To: <20240621101353.107425-1-hengqi@linux.alibaba.com> References: <20240621101353.107425-1-hengqi@linux.alibaba.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Patchwork-Delegate: kuba@kernel.org DIM-related mode and work have been collected in one same place, so new interfaces are added to provide convenience. Signed-off-by: Heng Qi Reviewed-by: Simon Horman --- include/linux/dim.h | 48 ++++++++++++++++++++++++++++++++ lib/dim/net_dim.c | 68 +++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 116 insertions(+) diff --git a/include/linux/dim.h b/include/linux/dim.h index e0f39bd85432..1b581ff25a15 100644 --- a/include/linux/dim.h +++ b/include/linux/dim.h @@ -256,6 +256,54 @@ int net_dim_init_irq_moder(struct net_device *dev, u8 profile_flags, */ void net_dim_free_irq_moder(struct net_device *dev); +/** + * net_dim_setting - initialize DIM's cq mode and schedule worker + * @dev: target network device + * @dim: DIM context + * @is_tx: true indicates the tx direction, false indicates the rx direction + */ +void net_dim_setting(struct net_device *dev, struct dim *dim, bool is_tx); + +/** + * net_dim_work_cancel - synchronously cancel dim's worker + * @dim: DIM context + */ +void net_dim_work_cancel(struct dim *dim); + +/** + * net_dim_get_rx_irq_moder - get DIM rx results based on profile_ix + * @dev: target network device + * @dim: DIM context + * + * Return: DIM irq moderation + */ +struct dim_cq_moder +net_dim_get_rx_irq_moder(struct net_device *dev, struct dim *dim); + +/** + * net_dim_get_tx_irq_moder - get DIM tx results based on profile_ix + * @dev: target network device + * @dim: DIM context + * + * Return: DIM irq moderation + */ +struct dim_cq_moder +net_dim_get_tx_irq_moder(struct net_device *dev, struct dim *dim); + +/** + * net_dim_set_rx_mode - set DIM rx cq mode + * @dev: target network device + * @rx_mode: target rx cq mode + */ +void net_dim_set_rx_mode(struct net_device *dev, u8 rx_mode); + +/** + * net_dim_set_tx_mode - set DIM tx cq mode + * @dev: target network device + * @tx_mode: target tx cq mode + */ +void net_dim_set_tx_mode(struct net_device *dev, u8 tx_mode); + /** * dim_on_top - check if current state is a good place to stop (top location) * @dim: DIM context diff --git a/lib/dim/net_dim.c b/lib/dim/net_dim.c index 0cd41277c7a3..d7e7028e9b19 100644 --- a/lib/dim/net_dim.c +++ b/lib/dim/net_dim.c @@ -165,6 +165,74 @@ void net_dim_free_irq_moder(struct net_device *dev) } EXPORT_SYMBOL(net_dim_free_irq_moder); +void net_dim_setting(struct net_device *dev, struct dim *dim, bool is_tx) +{ + struct dim_irq_moder *irq_moder = dev->irq_moder; + + if (!irq_moder) + return; + + if (is_tx) { + INIT_WORK(&dim->work, irq_moder->tx_dim_work); + dim->mode = READ_ONCE(irq_moder->dim_tx_mode); + return; + } + + INIT_WORK(&dim->work, irq_moder->rx_dim_work); + dim->mode = READ_ONCE(irq_moder->dim_rx_mode); +} +EXPORT_SYMBOL(net_dim_setting); + +void net_dim_work_cancel(struct dim *dim) +{ + cancel_work_sync(&dim->work); +} +EXPORT_SYMBOL(net_dim_work_cancel); + +struct dim_cq_moder net_dim_get_rx_irq_moder(struct net_device *dev, + struct dim *dim) +{ + struct dim_cq_moder res, *profile; + + rcu_read_lock(); + profile = rcu_dereference(dev->irq_moder->rx_profile); + res = profile[dim->profile_ix]; + rcu_read_unlock(); + + res.cq_period_mode = dim->mode; + + return res; +} +EXPORT_SYMBOL(net_dim_get_rx_irq_moder); + +struct dim_cq_moder net_dim_get_tx_irq_moder(struct net_device *dev, + struct dim *dim) +{ + struct dim_cq_moder res, *profile; + + rcu_read_lock(); + profile = rcu_dereference(dev->irq_moder->tx_profile); + res = profile[dim->profile_ix]; + rcu_read_unlock(); + + res.cq_period_mode = dim->mode; + + return res; +} +EXPORT_SYMBOL(net_dim_get_tx_irq_moder); + +void net_dim_set_rx_mode(struct net_device *dev, u8 rx_mode) +{ + WRITE_ONCE(dev->irq_moder->dim_rx_mode, rx_mode); +} +EXPORT_SYMBOL(net_dim_set_rx_mode); + +void net_dim_set_tx_mode(struct net_device *dev, u8 tx_mode) +{ + WRITE_ONCE(dev->irq_moder->dim_tx_mode, tx_mode); +} +EXPORT_SYMBOL(net_dim_set_tx_mode); + static int net_dim_step(struct dim *dim) { if (dim->tired == (NET_DIM_PARAMS_NUM_PROFILES * 2))