From patchwork Mon Jul 4 07:59:43 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Gerd Hoffmann X-Patchwork-Id: 12904823 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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id BA4FBC43334 for ; Mon, 4 Jul 2022 08:12:14 +0000 (UTC) Received: from localhost ([::1]:47146 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1o8HBl-00053I-OD for qemu-devel@archiver.kernel.org; Mon, 04 Jul 2022 04:12:13 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:54616) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1o8Gzx-0002Je-Ey for qemu-devel@nongnu.org; Mon, 04 Jul 2022 04:00:05 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]:45747) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1o8Gzu-0007ff-V7 for qemu-devel@nongnu.org; Mon, 04 Jul 2022 04:00:01 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1656921597; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=hommaXIVvndUX4ym/deZGPDDEn+t48mF6l13jYObGTc=; b=ZJzXcVIYYQt96EFz94lExvLWzu53yGJgFM/c0rikcWbFuECxJecGEo4mEC9R9yD7dso4zW xoGYPEZFdKXgKUMHzR6ejEH+0doltJ2YSkAQtLxBqJO57z8tmODHrkaCKMuS7edPX0Hiqy KIX6D4kgKHI+EvZ2PPc3VW/c0HALJis= 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-516-K8E6wNFnN96bpicICQJAiQ-1; Mon, 04 Jul 2022 03:59:52 -0400 X-MC-Unique: K8E6wNFnN96bpicICQJAiQ-1 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.rdu2.redhat.com [10.11.54.1]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id D51171C18265; Mon, 4 Jul 2022 07:59:51 +0000 (UTC) Received: from sirius.home.kraxel.org (unknown [10.39.192.27]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 9EC12409B3E3; Mon, 4 Jul 2022 07:59:51 +0000 (UTC) Received: by sirius.home.kraxel.org (Postfix, from userid 1000) id CD7871800790; Mon, 4 Jul 2022 09:59:46 +0200 (CEST) From: Gerd Hoffmann To: qemu-devel@nongnu.org Cc: Akihiko Odaki , "Canokeys.org" , Gerd Hoffmann , Peter Maydell , =?utf-8?q?Philippe_Mathieu-Daud?= =?utf-8?q?=C3=A9?= , "Hongren (Zenithal) Zheng" , MkfsSion Subject: [PULL 5/8] hw/usb/canokey: Fix CCID ZLP Date: Mon, 4 Jul 2022 09:59:43 +0200 Message-Id: <20220704075946.921883-6-kraxel@redhat.com> In-Reply-To: <20220704075946.921883-1-kraxel@redhat.com> References: <20220704075946.921883-1-kraxel@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.11.54.1 Received-SPF: pass client-ip=170.10.133.124; envelope-from=kraxel@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -21 X-Spam_score: -2.2 X-Spam_bar: -- X-Spam_report: (-2.2 / 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_NONE=-0.0001, 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+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" From: "Hongren (Zenithal) Zheng" CCID could send zero-length packet (ZLP) if we invoke two data_in, two packets would be concated and we could not distinguish them. The CANOKEY_EMU_EP_CTAPHID is imported from canokey-qemu.h Reported-by: MkfsSion Signed-off-by: Hongren (Zenithal) Zheng Message-Id: Signed-off-by: Gerd Hoffmann --- hw/usb/canokey.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) diff --git a/hw/usb/canokey.c b/hw/usb/canokey.c index 4a08b1cbd776..86548923eb16 100644 --- a/hw/usb/canokey.c +++ b/hw/usb/canokey.c @@ -109,11 +109,10 @@ int canokey_emu_transmit( * Note: this is a quirk for CanoKey CTAPHID * because it calls multiple emu_transmit in one device_loop * but w/o data_in it would stuck in device_loop - * This has no side effect for CCID as it is strictly - * OUT then IN transfer - * However it has side effect for Control transfer + * This has side effect for CCID since CCID can send ZLP + * This also has side effect for Control transfer */ - if (ep_in != 0) { + if (ep_in == CANOKEY_EMU_EP_CTAPHID) { canokey_emu_data_in(ep_in); } return 0;