From patchwork Mon Nov 20 03:31:24 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jason Wang X-Patchwork-Id: 839410 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=2001:4830:134:3::11; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 3ygDvB2KPDz9s5L for ; Mon, 20 Nov 2017 14:37:58 +1100 (AEDT) Received: from localhost ([::1]:55268 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1eGcuC-000385-FA for incoming@patchwork.ozlabs.org; Sun, 19 Nov 2017 22:37:56 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:39439) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1eGcoC-0007AW-Ei for qemu-devel@nongnu.org; Sun, 19 Nov 2017 22:31:49 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1eGcoB-0000uu-Ku for qemu-devel@nongnu.org; Sun, 19 Nov 2017 22:31:44 -0500 Received: from mx1.redhat.com ([209.132.183.28]:42142) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1eGcoB-0000ui-EO for qemu-devel@nongnu.org; Sun, 19 Nov 2017 22:31:43 -0500 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 mx1.redhat.com (Postfix) with ESMTPS id 9DFFC5F798; Mon, 20 Nov 2017 03:31:42 +0000 (UTC) Received: from jason-ThinkPad-T450s.redhat.com (ovpn-12-48.pek2.redhat.com [10.72.12.48]) by smtp.corp.redhat.com (Postfix) with ESMTP id BE671600C8; Mon, 20 Nov 2017 03:31:40 +0000 (UTC) From: Jason Wang To: qemu-devel@nongnu.org, peter.maydell@linaro.org Date: Mon, 20 Nov 2017 11:31:24 +0800 Message-Id: <1511148687-24909-4-git-send-email-jasowang@redhat.com> In-Reply-To: <1511148687-24909-1-git-send-email-jasowang@redhat.com> References: <1511148687-24909-1-git-send-email-jasowang@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.39]); Mon, 20 Nov 2017 03:31:42 +0000 (UTC) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PULL 3/6] hw/net/eepro100: Fix endianness problem on big endian hosts X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Thomas Huth , Jason Wang Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" From: Thomas Huth Since commit 1865e288a823c764cd4344d ("Fix eepro100 simple transmission mode"), the test/pxe-test is broken for the eepro100 device on big endian hosts. However, it seems like that commit did not introduce the problem, but just uncovered it: The EEPRO100State->tx.tbd_array_addr and EEPRO100State->tx.tcb_bytes fields are already in host byte order, since they have already been byte-swapped in the read_cb() function. Thus byte-swapping them in tx_command() again results in the wrong endianness. Removing the byte-swapping here fixes the pxe-test. Signed-off-by: Thomas Huth Signed-off-by: Jason Wang --- hw/net/eepro100.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/hw/net/eepro100.c b/hw/net/eepro100.c index 91dd058..1c0def5 100644 --- a/hw/net/eepro100.c +++ b/hw/net/eepro100.c @@ -754,8 +754,8 @@ static void read_cb(EEPRO100State *s) static void tx_command(EEPRO100State *s) { - uint32_t tbd_array = le32_to_cpu(s->tx.tbd_array_addr); - uint16_t tcb_bytes = (le16_to_cpu(s->tx.tcb_bytes) & 0x3fff); + uint32_t tbd_array = s->tx.tbd_array_addr; + uint16_t tcb_bytes = s->tx.tcb_bytes & 0x3fff; /* Sends larger than MAX_ETH_FRAME_SIZE are allowed, up to 2600 bytes. */ uint8_t buf[2600]; uint16_t size = 0;