From patchwork Thu Oct 24 17:13:58 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Eugenio Perez Martin X-Patchwork-Id: 11210589 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id C00F8913 for ; Thu, 24 Oct 2019 18:05:24 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 446DC205F4 for ; Thu, 24 Oct 2019 18:05:24 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="XSnzDR2S" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 446DC205F4 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Received: from localhost ([::1]:49718 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iNhUA-0004mk-BC for patchwork-qemu-devel@patchwork.kernel.org; Thu, 24 Oct 2019 14:05:22 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:37911) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iNggx-00028z-8K for qemu-devel@nongnu.org; Thu, 24 Oct 2019 13:14:32 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1iNggw-0001kd-3I for qemu-devel@nongnu.org; Thu, 24 Oct 2019 13:14:31 -0400 Received: from us-smtp-1.mimecast.com ([205.139.110.61]:50599 helo=us-smtp-delivery-1.mimecast.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1iNggw-0001k7-0J for qemu-devel@nongnu.org; Thu, 24 Oct 2019 13:14:30 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1571937268; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=9uOAEi58ET5xgMJaX9or6rmcR66f/uMJxfebNlHdbkM=; b=XSnzDR2SPR3rzrZbhqiKOPV54iu51IViXhdIAzo6MJSdKXjVh2qTQBgqGYph5JnyBhd/MR c1OQQUxn18kn7wKO+OfwE5/GS+qpGslICXAFiHF+yOiDnA0uEUhpYje0Ga5g7grwvQOFAu mEMudtzJUdPT6Dr68tfB7ZgkSr4jHUk= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-60-HsFOi9gPOja8XOU7xXRLzQ-1; Thu, 24 Oct 2019 13:14:25 -0400 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.phx2.redhat.com [10.5.11.15]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 318161800DFB; Thu, 24 Oct 2019 17:14:24 +0000 (UTC) Received: from eperezma.remote.csb (ovpn-116-206.ams2.redhat.com [10.36.116.206]) by smtp.corp.redhat.com (Postfix) with ESMTP id 6C82A5D70E; Thu, 24 Oct 2019 17:14:21 +0000 (UTC) From: =?utf-8?q?Eugenio_P=C3=A9rez?= To: qemu-devel@nongnu.org Subject: [PATCH v6 1/9] virtio: basic structure for packed ring Date: Thu, 24 Oct 2019 19:13:58 +0200 Message-Id: <20191024171406.12504-2-eperezma@redhat.com> In-Reply-To: <20191024171406.12504-1-eperezma@redhat.com> References: <20191024171406.12504-1-eperezma@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.15 X-MC-Unique: HsFOi9gPOja8XOU7xXRLzQ-1 X-Mimecast-Spam-Score: 0 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 205.139.110.61 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Kevin Wolf , Laurent Vivier , qemu-block@nongnu.org, Amit Shah , Jason Wang , "Michael S. Tsirkin" , Max Reitz , Stefan Hajnoczi , Paolo Bonzini , =?utf-8?q?Marc-Andr=C3=A9_Lureau?= , Fam Zheng Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" From: Wei Xu Define packed ring structure according to Qemu nomenclature, field data(wrap counter, etc) are also included. Signed-off-by: Wei Xu Signed-off-by: Jason Wang Reviewed-by: Jens Freimann --- hw/virtio/virtio.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/hw/virtio/virtio.c b/hw/virtio/virtio.c index 527df03bfd..fdac203cdf 100644 --- a/hw/virtio/virtio.c +++ b/hw/virtio/virtio.c @@ -43,6 +43,13 @@ typedef struct VRingDesc uint16_t next; } VRingDesc; +typedef struct VRingPackedDesc { + uint64_t addr; + uint32_t len; + uint16_t id; + uint16_t flags; +} VRingPackedDesc; + typedef struct VRingAvail { uint16_t flags; @@ -81,17 +88,25 @@ typedef struct VRing VRingMemoryRegionCaches *caches; } VRing; +typedef struct VRingPackedDescEvent { + uint16_t off_wrap; + uint16_t flags; +} VRingPackedDescEvent ; + struct VirtQueue { VRing vring; /* Next head to pop */ uint16_t last_avail_idx; + bool last_avail_wrap_counter; /* Last avail_idx read from VQ. */ uint16_t shadow_avail_idx; + bool shadow_avail_wrap_counter; uint16_t used_idx; + bool used_wrap_counter; /* Last used index value we have signalled on */ uint16_t signalled_used;