From patchwork Thu Feb 24 11:03:53 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xuan Zhuo X-Patchwork-Id: 12758353 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 69420C4332F for ; Thu, 24 Feb 2022 11:04:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233700AbiBXLEj (ORCPT ); Thu, 24 Feb 2022 06:04:39 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33716 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233699AbiBXLEh (ORCPT ); Thu, 24 Feb 2022 06:04:37 -0500 Received: from out30-45.freemail.mail.aliyun.com (out30-45.freemail.mail.aliyun.com [115.124.30.45]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0C85E28F972; Thu, 24 Feb 2022 03:04:05 -0800 (PST) X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R151e4;CH=green;DM=||false|;DS=||;FP=0|-1|-1|-1|0|-1|-1|-1;HT=e01e04400;MF=xuanzhuo@linux.alibaba.com;NM=1;PH=DS;RN=11;SR=0;TI=SMTPD_---0V5O5g7L_1645700642; Received: from localhost(mailfrom:xuanzhuo@linux.alibaba.com fp:SMTPD_---0V5O5g7L_1645700642) by smtp.aliyun-inc.com(127.0.0.1); Thu, 24 Feb 2022 19:04:03 +0800 From: Xuan Zhuo To: virtualization@lists.linux-foundation.org, netdev@vger.kernel.org Cc: "Michael S. Tsirkin" , Jason Wang , "David S. Miller" , Jakub Kicinski , Alexei Starovoitov , Daniel Borkmann , Jesper Dangaard Brouer , John Fastabend , bpf@vger.kernel.org Subject: [PATCH v2 0/9] virtio: support advance DMA Date: Thu, 24 Feb 2022 19:03:53 +0800 Message-Id: <20220224110402.108161-1-xuanzhuo@linux.alibaba.com> X-Mailer: git-send-email 2.31.0 MIME-Version: 1.0 X-Git-Hash: d02e086a8668 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org virtqueue_add() only supports virtual addresses, dma is completed in virtqueue_add(). In some scenarios (such as the AF_XDP scenario), DMA is completed in advance, so it is necessary for us to support passing the DMA address to virtqueue_add(). v2: 1. rename predma -> premapped 2. virtio net xdp tx use virtio dma api v1: 1. All sgs requested at one time are required to be unified PREDMA, and several of them are not supported to be PREDMA 2. virtio_dma_map() is removed from this patch set and will be submitted together with the next time AF_XDP supports virtio dma 3. Added patch #2 #3 to remove the check for flags when performing unmap indirect desc Xuan Zhuo (9): virtio_ring: rename vring_unmap_state_packed() to vring_unmap_extra_packed() virtio_ring: remove flags check for unmap split indirect desc virtio_ring: remove flags check for unmap packed indirect desc virtio_ring: virtqueue_add() support premapped virtio_ring: split: virtqueue_add_split() support premapped virtio_ring: packed: virtqueue_add_packed() support premapped virtio_ring: add api virtio_dma_map() for advance dma virtio_ring: introduce virtqueue_add_outbuf_premapped() virtio_net: xdp xmit use virtio dma api drivers/net/virtio_net.c | 42 +++++- drivers/virtio/virtio_ring.c | 280 ++++++++++++++++++++++++++--------- include/linux/virtio.h | 12 ++ 3 files changed, 254 insertions(+), 80 deletions(-) --- 2.31.0