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[209.132.180.67]) by mx.google.com with ESMTP id 2si150284pgy.541.2019.06.18.06.05.24; Tue, 18 Jun 2019 06:05:24 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of netdev-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of netdev-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=netdev-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=redhat.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728845AbfFRNFX (ORCPT + 9 others); Tue, 18 Jun 2019 09:05:23 -0400 Received: from mx1.redhat.com ([209.132.183.28]:21410 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726739AbfFRNFW (ORCPT ); Tue, 18 Jun 2019 09:05:22 -0400 Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.phx2.redhat.com [10.5.11.22]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 55E57308302F; Tue, 18 Jun 2019 13:05:22 +0000 (UTC) Received: from firesoul.localdomain (ovpn-200-41.brq.redhat.com [10.40.200.41]) by smtp.corp.redhat.com (Postfix) with ESMTP id 50D331017E33; Tue, 18 Jun 2019 13:05:18 +0000 (UTC) Received: from [192.168.5.1] (localhost [IPv6:::1]) by firesoul.localdomain (Postfix) with ESMTP id 7C2A4306665E6; Tue, 18 Jun 2019 15:05:17 +0200 (CEST) Subject: [PATCH net-next v2 02/12] net: page_pool: add helper function to unmap dma addresses From: Jesper Dangaard Brouer To: netdev@vger.kernel.org, Ilias Apalodimas , Toke =?utf-8?q?H=C3=B8iland-J=C3=B8rgensen?= , Tariq Toukan , Jesper Dangaard Brouer Cc: toshiaki.makita1@gmail.com, grygorii.strashko@ti.com, ivan.khoronzhuk@linaro.org, mcroce@redhat.com Date: Tue, 18 Jun 2019 15:05:17 +0200 Message-ID: <156086311744.27760.5417231838560145863.stgit@firesoul> In-Reply-To: <156086304827.27760.11339786046465638081.stgit@firesoul> References: <156086304827.27760.11339786046465638081.stgit@firesoul> User-Agent: StGit/0.17.1-dirty MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.22 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.46]); Tue, 18 Jun 2019 13:05:22 +0000 (UTC) Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Ilias Apalodimas On a previous patch dma addr was stored in 'struct page'. Use that to unmap DMA addresses used by network drivers Signed-off-by: Ilias Apalodimas Signed-off-by: Jesper Dangaard Brouer --- include/net/page_pool.h | 1 + net/core/page_pool.c | 7 +++++++ 2 files changed, 8 insertions(+) diff --git a/include/net/page_pool.h b/include/net/page_pool.h index b885d86cb7a1..ad218cef88c5 100644 --- a/include/net/page_pool.h +++ b/include/net/page_pool.h @@ -110,6 +110,7 @@ static inline struct page *page_pool_dev_alloc_pages(struct page_pool *pool) struct page_pool *page_pool_create(const struct page_pool_params *params); void page_pool_destroy(struct page_pool *pool); +void page_pool_unmap_page(struct page_pool *pool, struct page *page); /* Never call this directly, use helpers below */ void __page_pool_put_page(struct page_pool *pool, diff --git a/net/core/page_pool.c b/net/core/page_pool.c index 5b2252c6d49b..205af7bd6d09 100644 --- a/net/core/page_pool.c +++ b/net/core/page_pool.c @@ -190,6 +190,13 @@ static void __page_pool_clean_page(struct page_pool *pool, page->dma_addr = 0; } +/* unmap the page and clean our state */ +void page_pool_unmap_page(struct page_pool *pool, struct page *page) +{ + __page_pool_clean_page(pool, page); +} +EXPORT_SYMBOL(page_pool_unmap_page); + /* Return a page to the page allocator, cleaning up our state */ static void __page_pool_return_page(struct page_pool *pool, struct page *page) {