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=-9.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_PASS,USER_AGENT_GIT autolearn=ham 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 81849C43381 for ; Thu, 28 Mar 2019 14:47:25 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 4C2E7217F9 for ; Thu, 28 Mar 2019 14:47:25 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="pmQAbqYd" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726214AbfC1OrY (ORCPT ); Thu, 28 Mar 2019 10:47:24 -0400 Received: from mail-wm1-f65.google.com ([209.85.128.65]:33539 "EHLO mail-wm1-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725948AbfC1OrY (ORCPT ); Thu, 28 Mar 2019 10:47:24 -0400 Received: by mail-wm1-f65.google.com with SMTP id z6so7470186wmi.0 for ; Thu, 28 Mar 2019 07:47:22 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id; bh=HWZ+8t0RXb66eJXzmJXGu8ooK4qVIsnGjH9596so8Ec=; b=pmQAbqYd8pntk9Ip91KxLi3nFRH0gUuA/fg020NB0g8owoGwr/9aie92WqZ9Hkp+wE HOPN94Z1sIAACnvMqaJ+y1kPx3E15PMxpxPLjDwz9lKwgp1cNPKmlO0U2Cjv9nIdg46N t4pi8VQLB3BilR22Le6kxxLSoWozXNZdnTtyfzVPW6yiTVGGFEUc6kKTSYcAZBQo51Uc Oy/gy72valr2YMPTanZz4ESJC1cnsOSZdxRkSpkMm7SLFWbR826ZdT2rYHjzd7pi2A8m U4rkv14hMKJToBkB7oEBh26iAdOXYCky2LBdOTD2Up3V5qUxyqTxjkhYpoVbBkobQR8q lEmA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id; bh=HWZ+8t0RXb66eJXzmJXGu8ooK4qVIsnGjH9596so8Ec=; b=peImXWJB84lBc6DzVxdwX7uslesZDCNt4hOO/N8gGRIAIWerL1a4QGopMJx4zHAKU/ ZO0GBXaE5R82n6Ezj13RmDXbqBy88t4O8f/AVBHyB+gfy8NHgi4f1Ep7YyhoySE7FZP7 3a7WeRCCxDJiuZrH8FO8AO7BPjspuQwGcehSLGQpXoulD5np0pFDLhBmqX3rd+MwyCvj aYngtmhSZBrXXvgAkPUCMaOJvfb+IeUi85U4XZ+jEk5kk0KqFkDCZBiyAuaz+gnx0X1/ t1eV74PMG3LPbabeMn/2XI6vvduKNdYOk+8gjWxE4YYGyMxnA15M9xuEyDs2EjdKsqSz ozMw== X-Gm-Message-State: APjAAAUu9/4tU8zCbeTDjc42gk1vhLWFT/W0G56CiKeX93362wzCbTDE zpQgVjgbysMTDCi67jOYrb82Tw== X-Google-Smtp-Source: APXvYqzhbQAZEwiAvl65vOSV/mDsJSwYTo4vyKDwODxZ9c7q26YtYeUshuHt4QqrKPED9VTFUCqzag== X-Received: by 2002:a1c:1d4:: with SMTP id 203mr234354wmb.101.1553784442270; Thu, 28 Mar 2019 07:47:22 -0700 (PDT) Received: from apalos.lan (ppp-94-64-206-130.home.otenet.gr. [94.64.206.130]) by smtp.gmail.com with ESMTPSA id v184sm5680854wma.6.2019.03.28.07.47.20 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Thu, 28 Mar 2019 07:47:21 -0700 (PDT) From: Ilias Apalodimas To: brouer@redhat.com, netdev@vger.kernel.org Cc: tariqt@mellanox.com, davem@davemloft.net, toke@redhat.com, mcroce@redhat.com, Ilias Apalodimas Subject: [net-next, PATCH 1/2] net: page_pool: add helper funtion to retrieve dma addresses Date: Thu, 28 Mar 2019 16:47:17 +0200 Message-Id: <1553784438-17503-1-git-send-email-ilias.apalodimas@linaro.org> X-Mailer: git-send-email 2.7.4 Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org The page_pool API has no users for it's DMA capabilities yet. Retrieving DMA addresses used by network drivers will be needed for real users. commit 1567b85eb8ad ("net: page_pool: don't use page->private to store dma_addr_t") uses 'struct page' to store the addresses. This patch provides a helper for retrieving them. Signed-off-by: Ilias Apalodimas Signed-off-by: Jesper Dangaard Brouer --- include/net/page_pool.h | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/include/net/page_pool.h b/include/net/page_pool.h index 694d055..b885d86 100644 --- a/include/net/page_pool.h +++ b/include/net/page_pool.h @@ -132,6 +132,11 @@ static inline void page_pool_recycle_direct(struct page_pool *pool, __page_pool_put_page(pool, page, true); } +static inline dma_addr_t page_pool_get_dma_addr(struct page *page) +{ + return page->dma_addr; +} + static inline bool is_page_pool_compiled_in(void) { #ifdef CONFIG_PAGE_POOL -- 2.7.4