From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-4.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id A2EBDC432C3 for ; Fri, 15 Nov 2019 19:02:16 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 77EDC20732 for ; Fri, 15 Nov 2019 19:02:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1573844536; bh=tlj22l7/LTEexEzbFvzvD4XsFk/OMusxlw3mMaGexVM=; h=From:To:Cc:Subject:Date:List-ID:From; b=RFK45lR2Dk9MNmz3p5jANElh8TgRqIk6l24K/T8sErycu36p5IASjrwvq/RRQ3dgl TAXtl0MSsS5zflyK7Gk5ZT7rJbhO5pG7IaFDYyfguLcy83dbDvj2RdjHZNvhnM5MsE HjMLa1UNGOgYbVssIJj7jykll9a3ZxxUseuT0znk= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726640AbfKOTBz (ORCPT ); Fri, 15 Nov 2019 14:01:55 -0500 Received: from mail.kernel.org ([198.145.29.99]:52322 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726323AbfKOTBz (ORCPT ); Fri, 15 Nov 2019 14:01:55 -0500 Received: from localhost.localdomain.com (unknown [77.139.212.74]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id ABF1F20732; Fri, 15 Nov 2019 19:01:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1573844514; bh=tlj22l7/LTEexEzbFvzvD4XsFk/OMusxlw3mMaGexVM=; h=From:To:Cc:Subject:Date:From; b=SNtrkLQZ6ndJJ1Ex21KOOwerLQaD0sMIMN9XTviIycpMcrGDpw5PelW44T5NL16AO ggkWDR6BWdCWudhgFYAc/uQsUIqknvt5A2xksIIvdpgjeD5sL8HKGX21/JDmXydQzg dsR20YXNItgWZ7gFa7HpcDMlLpmSRSrt53/bIjSU= From: Lorenzo Bianconi To: netdev@vger.kernel.org Cc: davem@davemloft.net, ilias.apalodimas@linaro.org, brouer@redhat.com, lorenzo.bianconi@redhat.com, mcroce@redhat.com Subject: [PATCH v3 net-next 0/3] add DMA-sync-for-device capability to page_pool API Date: Fri, 15 Nov 2019 21:01:36 +0200 Message-Id: X-Mailer: git-send-email 2.21.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Introduce the possibility to sync DMA memory for device in the page_pool API. This feature allows to sync proper DMA size and not always full buffer (dma_sync_single_for_device can be very costly). Please note DMA-sync-for-CPU is still device driver responsibility. Relying on page_pool DMA sync mvneta driver improves XDP_DROP pps of about 180Kpps: - XDP_DROP DMA sync managed by mvneta driver: ~420Kpps - XDP_DROP DMA sync managed by page_pool API: ~595Kpps Changes since v2: - rely on PP_FLAG_DMA_SYNC_DEV flag instead of dma_sync Changes since v1: - rename sync in dma_sync - set dma_sync_size to 0xFFFFFFFF in page_pool_recycle_direct and page_pool_put_page routines - Improve documentation Lorenzo Bianconi (3): net: mvneta: rely on page_pool_recycle_direct in mvneta_run_xdp net: page_pool: add the possibility to sync DMA memory for device net: mvneta: get rid of huge dma sync in mvneta_rx_refill drivers/net/ethernet/marvell/mvneta.c | 24 +++++++++------ include/net/page_pool.h | 21 ++++++++++---- net/core/page_pool.c | 42 +++++++++++++++++++++++---- 3 files changed, 66 insertions(+), 21 deletions(-) -- 2.21.0