From patchwork Tue Jan 12 13:41:20 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Gerd Hoffmann X-Patchwork-Id: 12013507 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=-21.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS 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 AD65BC433E0 for ; Tue, 12 Jan 2021 13:44:55 +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 0F86022228 for ; Tue, 12 Jan 2021 13:44:55 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 0F86022228 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+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:44732 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kzJyf-0005vD-KP for qemu-devel@archiver.kernel.org; Tue, 12 Jan 2021 08:44:53 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:39376) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kzJvU-0002Oa-7N for qemu-devel@nongnu.org; Tue, 12 Jan 2021 08:41:36 -0500 Received: from us-smtp-delivery-124.mimecast.com ([63.128.21.124]:50119) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1kzJvR-0004Ss-7a for qemu-devel@nongnu.org; Tue, 12 Jan 2021 08:41:36 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1610458892; 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=BcNX9yBSn5n9zsm2MafV9PjzHdK3Ez3AqfSD04Ap6fU=; b=GDoO/VIHY7ydfYyPGZ+sbyPCot4gqbJhVGMv/RH/SFTzNRjYNL1vCQfkAewf7qOh5a5myj 9Zd43BSM6cOq+h+kIMMC4DmtlIDU5Pbi1wbs9fJ1e4S/cKz0MAJrYXCynK/W3loVrloYcZ +Bc/kH73jlZTpV5pqvp3HeEQdmWW3BI= 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-478-dQlgcfnmMUOEBQxXfByOBw-1; Tue, 12 Jan 2021 08:41:29 -0500 X-MC-Unique: dQlgcfnmMUOEBQxXfByOBw-1 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id DCAB9107ACF9 for ; Tue, 12 Jan 2021 13:41:28 +0000 (UTC) Received: from sirius.home.kraxel.org (ovpn-114-197.ams2.redhat.com [10.36.114.197]) by smtp.corp.redhat.com (Postfix) with ESMTPS id AC3E92BFEE; Tue, 12 Jan 2021 13:41:22 +0000 (UTC) Received: by sirius.home.kraxel.org (Postfix, from userid 1000) id DA68E1800608; Tue, 12 Jan 2021 14:41:20 +0100 (CET) From: Gerd Hoffmann To: qemu-devel@nongnu.org Subject: [PATCH v3 3/3] vnc: add support for extended desktop resize Date: Tue, 12 Jan 2021 14:41:20 +0100 Message-Id: <20210112134120.2031837-4-kraxel@redhat.com> In-Reply-To: <20210112134120.2031837-1-kraxel@redhat.com> References: <20210112134120.2031837-1-kraxel@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=kraxel@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Received-SPF: pass client-ip=63.128.21.124; envelope-from=kraxel@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -29 X-Spam_score: -3.0 X-Spam_bar: --- X-Spam_report: (-3.0 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.251, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action 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: Gerd Hoffmann Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" The extended desktop resize encoding adds support for (a) clients sending resize requests to the server, and (b) multihead support. This patch implements (a). All resize requests are rejected by qemu. Qemu can't resize the framebuffer on its own, this is in the hands of the guest, so all qemu can do is forward the request to the guest. Should the guest actually resize the framebuffer we can notify the vnc client later with a separate message. This requires support in the display device. Works with virtio-gpu. https://github.com/rfbproto/rfbproto/blob/master/rfbproto.rst#extendeddesktopsize-pseudo-encoding Signed-off-by: Gerd Hoffmann Reviewed-by: Daniel P. Berrangé --- ui/vnc.h | 2 ++ ui/vnc.c | 64 +++++++++++++++++++++++++++++++++++++++++++++++++++++++- 2 files changed, 65 insertions(+), 1 deletion(-) diff --git a/ui/vnc.h b/ui/vnc.h index c8d3ad9ec496..77a310947bd6 100644 --- a/ui/vnc.h +++ b/ui/vnc.h @@ -442,6 +442,7 @@ enum { enum VncFeatures { VNC_FEATURE_RESIZE, + VNC_FEATURE_RESIZE_EXT, VNC_FEATURE_HEXTILE, VNC_FEATURE_POINTER_TYPE_CHANGE, VNC_FEATURE_WMVI, @@ -456,6 +457,7 @@ enum VncFeatures { }; #define VNC_FEATURE_RESIZE_MASK (1 << VNC_FEATURE_RESIZE) +#define VNC_FEATURE_RESIZE_EXT_MASK (1 << VNC_FEATURE_RESIZE_EXT) #define VNC_FEATURE_HEXTILE_MASK (1 << VNC_FEATURE_HEXTILE) #define VNC_FEATURE_POINTER_TYPE_CHANGE_MASK (1 << VNC_FEATURE_POINTER_TYPE_CHANGE) #define VNC_FEATURE_WMVI_MASK (1 << VNC_FEATURE_WMVI) diff --git a/ui/vnc.c b/ui/vnc.c index 8df63b349b38..d4a161ac1393 100644 --- a/ui/vnc.c +++ b/ui/vnc.c @@ -654,10 +654,35 @@ void vnc_framebuffer_update(VncState *vs, int x, int y, int w, int h, vnc_write_s32(vs, encoding); } +static void vnc_desktop_resize_ext(VncState *vs, int reject_reason) +{ + vnc_lock_output(vs); + vnc_write_u8(vs, VNC_MSG_SERVER_FRAMEBUFFER_UPDATE); + vnc_write_u8(vs, 0); + vnc_write_u16(vs, 1); /* number of rects */ + vnc_framebuffer_update(vs, + reject_reason ? 1 : 0, + reject_reason, + vs->client_width, vs->client_height, + VNC_ENCODING_DESKTOP_RESIZE_EXT); + vnc_write_u8(vs, 1); /* number of screens */ + vnc_write_u8(vs, 0); /* padding */ + vnc_write_u8(vs, 0); /* padding */ + vnc_write_u8(vs, 0); /* padding */ + vnc_write_u32(vs, 0); /* screen id */ + vnc_write_u16(vs, 0); /* screen x-pos */ + vnc_write_u16(vs, 0); /* screen y-pos */ + vnc_write_u16(vs, vs->client_width); + vnc_write_u16(vs, vs->client_height); + vnc_write_u32(vs, 0); /* screen flags */ + vnc_unlock_output(vs); + vnc_flush(vs); +} static void vnc_desktop_resize(VncState *vs) { - if (vs->ioc == NULL || !vnc_has_feature(vs, VNC_FEATURE_RESIZE)) { + if (vs->ioc == NULL || (!vnc_has_feature(vs, VNC_FEATURE_RESIZE) && + !vnc_has_feature(vs, VNC_FEATURE_RESIZE_EXT))) { return; } @@ -667,6 +692,12 @@ static void vnc_desktop_resize(VncState *vs) pixman_image_get_height(vs->vd->server) >= 0); vs->client_width = pixman_image_get_width(vs->vd->server); vs->client_height = pixman_image_get_height(vs->vd->server); + + if (vnc_has_feature(vs, VNC_FEATURE_RESIZE_EXT)) { + vnc_desktop_resize_ext(vs, 0); + return; + } + vnc_lock_output(vs); vnc_write_u8(vs, VNC_MSG_SERVER_FRAMEBUFFER_UPDATE); vnc_write_u8(vs, 0); @@ -2102,6 +2133,9 @@ static void set_encodings(VncState *vs, int32_t *encodings, size_t n_encodings) case VNC_ENCODING_DESKTOPRESIZE: vs->features |= VNC_FEATURE_RESIZE_MASK; break; + case VNC_ENCODING_DESKTOP_RESIZE_EXT: + vs->features |= VNC_FEATURE_RESIZE_EXT_MASK; + break; case VNC_ENCODING_POINTER_TYPE_CHANGE: vs->features |= VNC_FEATURE_POINTER_TYPE_CHANGE_MASK; break; @@ -2420,6 +2454,34 @@ static int protocol_client_msg(VncState *vs, uint8_t *data, size_t len) break; } break; + case VNC_MSG_CLIENT_SET_DESKTOP_SIZE: + { + size_t size; + uint8_t screens; + + if (len < 8) { + return 8; + } + + screens = read_u8(data, 6); + size = 8 + screens * 16; + if (len < size) { + return size; + } + + if (dpy_ui_info_supported(vs->vd->dcl.con)) { + QemuUIInfo info; + memset(&info, 0, sizeof(info)); + info.width = read_u16(data, 2); + info.height = read_u16(data, 4); + dpy_set_ui_info(vs->vd->dcl.con, &info); + vnc_desktop_resize_ext(vs, 4 /* Request forwarded */); + } else { + vnc_desktop_resize_ext(vs, 3 /* Invalid screen layout */); + } + + break; + } default: VNC_DEBUG("Msg: %d\n", data[0]); vnc_client_error(vs);