From patchwork Tue Mar 3 10:10:27 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Jason Wang X-Patchwork-Id: 1248267 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (1024-bit key; unprotected) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256 header.s=mimecast20190719 header.b=NBO9UXaa; dkim-atps=neutral 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 ozlabs.org (Postfix) with ESMTPS id 48WtFn3wfmz9sRN for ; Tue, 3 Mar 2020 21:16:13 +1100 (AEDT) Received: from localhost ([::1]:44742 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1j94ax-0001kJ-C4 for incoming@patchwork.ozlabs.org; Tue, 03 Mar 2020 05:16:11 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:52533) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1j94W6-0007go-EF for qemu-devel@nongnu.org; Tue, 03 Mar 2020 05:11:11 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1j94W5-0006Bg-E8 for qemu-devel@nongnu.org; Tue, 03 Mar 2020 05:11:10 -0500 Received: from us-smtp-2.mimecast.com ([207.211.31.81]:45008 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 1j94W4-0006B4-2X for qemu-devel@nongnu.org; Tue, 03 Mar 2020 05:11:08 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1583230267; 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=S9wXbDIJbh+XQKrN8+dstIByeULUyHMNTV2YYVdc9pc=; b=NBO9UXaalCQfTJvMO0Ju1Mnpf09AgTzZvIg1h19rD2WRXgNntjShMuhYRJLhmiFMVW2+mb WM/4m4kRyWgQ88iO55RDfg+eTkDtUTUnpYBB/LHx8Un6efSX69lvbuSXYp6xnJrUOkliGc zhKRrTaa3UWpCXskJrbHtEcRZue1ngM= 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-163-7doRSl5ON7qOyU0SLYej5A-1; Tue, 03 Mar 2020 05:11:05 -0500 X-MC-Unique: 7doRSl5ON7qOyU0SLYej5A-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 9142D1005F66; Tue, 3 Mar 2020 10:11:04 +0000 (UTC) Received: from jason-ThinkPad-T430s.redhat.com (ovpn-12-98.pek2.redhat.com [10.72.12.98]) by smtp.corp.redhat.com (Postfix) with ESMTP id EF0BD8B745; Tue, 3 Mar 2020 10:11:02 +0000 (UTC) From: Jason Wang To: peter.maydell@linaro.org Subject: [PULL V2 08/23] dp8393x: Don't clobber packet checksum Date: Tue, 3 Mar 2020 18:10:27 +0800 Message-Id: <1583230242-14597-9-git-send-email-jasowang@redhat.com> In-Reply-To: <1583230242-14597-1-git-send-email-jasowang@redhat.com> References: <1583230242-14597-1-git-send-email-jasowang@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 207.211.31.81 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: Jason Wang , qemu-devel@nongnu.org, Finn Thain Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" From: Finn Thain A received packet consumes pkt_size bytes in the buffer and the frame checksum that's appended to it consumes another 4 bytes. The Receive Buffer Address register takes the former quantity into account but not the latter. So the next packet written to the buffer overwrites the frame checksum. Fix this. Signed-off-by: Finn Thain Reviewed-by: Philippe Mathieu-Daudé Tested-by: Laurent Vivier Signed-off-by: Jason Wang --- hw/net/dp8393x.c | 1 + 1 file changed, 1 insertion(+) diff --git a/hw/net/dp8393x.c b/hw/net/dp8393x.c index 911f59e..6329341 100644 --- a/hw/net/dp8393x.c +++ b/hw/net/dp8393x.c @@ -818,6 +818,7 @@ static ssize_t dp8393x_receive(NetClientState *nc, const uint8_t * buf, address += rx_len; address_space_write(&s->as, address, MEMTXATTRS_UNSPECIFIED, &checksum, 4); + address += 4; rx_len += 4; s->regs[SONIC_CRBA1] = address >> 16; s->regs[SONIC_CRBA0] = address & 0xffff;