From nobody Mon Feb 9 00:02:28 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=redhat.com ARC-Seal: i=1; a=rsa-sha256; t=1657971665; cv=none; d=zohomail.com; s=zohoarc; b=IPHyVLuYMfVFvKMORbOeK1FQP9l+z6MY9sck7J0cZmWvdOdse92Y+CRO8tF14wM7TTWN5kq34i3G1F49TEUTO5BcpnUBNe/lvWAiz0VBCq9hHsUbTfnrMo3c+aVVmx5qT65mxgDf8GDrXU3Tx8zKPYW0yT9Q2mgox7xPb38PqfQ= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1657971665; h=Content-Type:Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; bh=IMIjFvI1Vq0iV/VkNT2y2sFWrcY9BW6brdW9oxW2Xvk=; b=IQM/zRfJTeS9zzJnXbKAoix+WJQ8rHb9BKgWTXOu/H0i29EbykbGGDxPVi0nVFNuZKm7JID+EZ41FJnxGFOdacSFLGajE1HQ6gnK8eDjvRPY5r79RdFHOjjcR/dHUhCGhs+2CCg5f5M0KeNycxKPkrbxacMax/mWd3SKsUZNr3o= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1657971665778695.0482379615777; Sat, 16 Jul 2022 04:41:05 -0700 (PDT) Received: from localhost ([::1]:42994 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1oCgAS-0000PS-PU for importer@patchew.org; Sat, 16 Jul 2022 07:41:04 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:53020) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oCg4o-0006z0-D1 for qemu-devel@nongnu.org; Sat, 16 Jul 2022 07:35:15 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.129.124]:34724) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oCg4m-0007Ea-UJ for qemu-devel@nongnu.org; Sat, 16 Jul 2022 07:35:14 -0400 Received: from mimecast-mx02.redhat.com (mx3-rdu2.redhat.com [66.187.233.73]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-437-O2RNuLRVM3utk7Jt-dbQPg-1; Sat, 16 Jul 2022 07:35:07 -0400 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.rdu2.redhat.com [10.11.54.2]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 80BDF3C0CD5B; Sat, 16 Jul 2022 11:35:06 +0000 (UTC) Received: from eperezma.remote.csb (unknown [10.39.192.64]) by smtp.corp.redhat.com (Postfix) with ESMTP id 630CD40E80E0; Sat, 16 Jul 2022 11:35:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1657971312; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=IMIjFvI1Vq0iV/VkNT2y2sFWrcY9BW6brdW9oxW2Xvk=; b=ICTedSoFB8uSncEWSbOpDM/537mEhBg/v6FhRECwTGul+wUrgMEN9x6rMQAKR9m1y8YFwn AX2PWYiAFq2RGmsFgXwq/D4COjmEiv91u0GbLxV3G99R5bcYWwORDPRl6DaI78IFh8OOUi F/H5GYoUmfteexjUNl+OUOjLgBxOneo= X-MC-Unique: O2RNuLRVM3utk7Jt-dbQPg-1 From: =?UTF-8?q?Eugenio=20P=C3=A9rez?= To: qemu-devel@nongnu.org Cc: Harpreet Singh Anand , Stefano Garzarella , Laurent Vivier , Eli Cohen , Parav Pandit , Markus Armbruster , Eric Blake , Zhu Lingshan , Paolo Bonzini , "Michael S. Tsirkin" , Cindy Lu , Cornelia Huck , Liuxiangdong , Jason Wang , Stefan Hajnoczi , "Gonglei (Arei)" , Gautam Dawar Subject: [RFC PATCH 10/12] vdpa: Make vhost_vdpa_net_cvq_map_elem accept any out sg Date: Sat, 16 Jul 2022 13:34:05 +0200 Message-Id: <20220716113407.2730331-11-eperezma@redhat.com> In-Reply-To: <20220716113407.2730331-1-eperezma@redhat.com> References: <20220716113407.2730331-1-eperezma@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 2.84 on 10.11.54.2 Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=170.10.129.124; envelope-from=eperezma@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -28 X-Spam_score: -2.9 X-Spam_bar: -- X-Spam_report: (-2.9 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.082, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @redhat.com) X-ZM-MESSAGEID: 1657971667554100001 So its generic enough to accept any out sg buffer and we can inject NIC state messages. Signed-off-by: Eugenio P=C3=A9rez --- net/vhost-vdpa.c | 29 +++++++++++++++-------------- 1 file changed, 15 insertions(+), 14 deletions(-) diff --git a/net/vhost-vdpa.c b/net/vhost-vdpa.c index aaae51a778..0183fce353 100644 --- a/net/vhost-vdpa.c +++ b/net/vhost-vdpa.c @@ -302,35 +302,36 @@ dma_map_err: } =20 /** - * Copy the guest element into a dedicated buffer suitable to be sent to N= IC + * Maps out sg and in buffer into dedicated buffers suitable to be sent to= NIC * - * @iov: [0] is the out buffer, [1] is the in one + * @dev_iov: [0] is the out buffer, [1] is the in one */ -static bool vhost_vdpa_net_cvq_map_elem(VhostVDPAState *s, - VirtQueueElement *elem, - struct iovec *iov) +static bool vhost_vdpa_net_cvq_map_sg(VhostVDPAState *s, + const struct iovec *out, size_t out_= num, + struct iovec *dev_iov) { size_t in_copied; bool ok; =20 - iov[0].iov_base =3D s->cvq_cmd_out_buffer; - ok =3D vhost_vdpa_cvq_map_buf(&s->vhost_vdpa, elem->out_sg, elem->out_= num, - vhost_vdpa_net_cvq_cmd_len(), iov[0].iov_b= ase, - &iov[0].iov_len, false); + dev_iov[0].iov_base =3D s->cvq_cmd_out_buffer; + ok =3D vhost_vdpa_cvq_map_buf(&s->vhost_vdpa, out, out_num, + vhost_vdpa_net_cvq_cmd_len(), + dev_iov[0].iov_base, &dev_iov[0].iov_len, + false); if (unlikely(!ok)) { return false; } =20 - iov[1].iov_base =3D s->cvq_cmd_in_buffer; + dev_iov[1].iov_base =3D s->cvq_cmd_in_buffer; ok =3D vhost_vdpa_cvq_map_buf(&s->vhost_vdpa, NULL, 0, - sizeof(virtio_net_ctrl_ack), iov[1].iov_ba= se, - &in_copied, true); + sizeof(virtio_net_ctrl_ack), + dev_iov[1].iov_base, &in_copied, true); if (unlikely(!ok)) { vhost_vdpa_cvq_unmap_buf(&s->vhost_vdpa, s->cvq_cmd_out_buffer); return false; } =20 - iov[1].iov_len =3D sizeof(virtio_net_ctrl_ack); + dev_iov[1].iov_len =3D sizeof(virtio_net_ctrl_ack); return true; } =20 @@ -449,7 +450,7 @@ static int vhost_vdpa_net_handle_ctrl_avail(VhostShadow= Virtqueue *svq, }; bool ok; =20 - ok =3D vhost_vdpa_net_cvq_map_elem(s, elem, dev_buffers); + ok =3D vhost_vdpa_net_cvq_map_sg(s, elem->out_sg, elem->out_num, dev_b= uffers); if (unlikely(!ok)) { goto out; } --=20 2.31.1