From patchwork Mon Mar 7 03:12:54 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jason Wang X-Patchwork-Id: 8514951 Return-Path: X-Original-To: patchwork-qemu-devel@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 9BFDC9F46A for ; Mon, 7 Mar 2016 03:20:17 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 05B7E20117 for ; Mon, 7 Mar 2016 03:20:17 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 4F3A620115 for ; Mon, 7 Mar 2016 03:20:16 +0000 (UTC) Received: from localhost ([::1]:53226 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1acliR-0005Rf-MB for patchwork-qemu-devel@patchwork.kernel.org; Sun, 06 Mar 2016 22:20:15 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:49644) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aclcK-0002c7-JM for qemu-devel@nongnu.org; Sun, 06 Mar 2016 22:13:57 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1aclcJ-000060-G0 for qemu-devel@nongnu.org; Sun, 06 Mar 2016 22:13:56 -0500 Received: from mx1.redhat.com ([209.132.183.28]:60995) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aclcJ-00005v-B2 for qemu-devel@nongnu.org; Sun, 06 Mar 2016 22:13:55 -0500 Received: from int-mx10.intmail.prod.int.phx2.redhat.com (int-mx10.intmail.prod.int.phx2.redhat.com [10.5.11.23]) by mx1.redhat.com (Postfix) with ESMTPS id 1208932E89D; Mon, 7 Mar 2016 03:13:55 +0000 (UTC) Received: from jason-ThinkPad-T430s.redhat.com (vpn1-5-187.pek2.redhat.com [10.72.5.187]) by int-mx10.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id u273D2ML023865; Sun, 6 Mar 2016 22:13:51 -0500 From: Jason Wang To: peter.maydell@linaro.org, qemu-devel@nongnu.org Date: Mon, 7 Mar 2016 11:12:54 +0800 Message-Id: <1457320380-5111-9-git-send-email-jasowang@redhat.com> In-Reply-To: <1457320380-5111-1-git-send-email-jasowang@redhat.com> References: <1457320380-5111-1-git-send-email-jasowang@redhat.com> X-Scanned-By: MIMEDefang 2.68 on 10.5.11.23 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x X-Received-From: 209.132.183.28 Cc: Jiri Pirko , Jason Wang Subject: [Qemu-devel] [PULL 08/14] rocker: forbid to change world type X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Jiri Pirko Port to world assignment should be permitted only by qemu user. Driver should not be able to do it, so forbid that possibility. Signed-off-by: Jiri Pirko Signed-off-by: Jason Wang --- hw/net/rocker/rocker.c | 8 +++++++- hw/net/rocker/rocker_fp.c | 5 +++++ hw/net/rocker/rocker_fp.h | 1 + 3 files changed, 13 insertions(+), 1 deletion(-) diff --git a/hw/net/rocker/rocker.c b/hw/net/rocker/rocker.c index f3e994d..a1d921d 100644 --- a/hw/net/rocker/rocker.c +++ b/hw/net/rocker/rocker.c @@ -400,7 +400,13 @@ static int cmd_set_port_settings(Rocker *r, if (tlvs[ROCKER_TLV_CMD_PORT_SETTINGS_MODE]) { mode = rocker_tlv_get_u8(tlvs[ROCKER_TLV_CMD_PORT_SETTINGS_MODE]); - fp_port_set_world(fp_port, r->worlds[mode]); + if (mode >= ROCKER_WORLD_TYPE_MAX) { + return -ROCKER_EINVAL; + } + /* We don't support world change. */ + if (!fp_port_check_world(fp_port, r->worlds[mode])) { + return -ROCKER_EINVAL; + } } if (tlvs[ROCKER_TLV_CMD_PORT_SETTINGS_LEARNING]) { diff --git a/hw/net/rocker/rocker_fp.c b/hw/net/rocker/rocker_fp.c index af37fef..0149899 100644 --- a/hw/net/rocker/rocker_fp.c +++ b/hw/net/rocker/rocker_fp.c @@ -186,6 +186,11 @@ void fp_port_set_world(FpPort *port, World *world) port->world = world; } +bool fp_port_check_world(FpPort *port, World *world) +{ + return port->world == world; +} + bool fp_port_enabled(FpPort *port) { return port->enabled; diff --git a/hw/net/rocker/rocker_fp.h b/hw/net/rocker/rocker_fp.h index ab80fd8..04592bb 100644 --- a/hw/net/rocker/rocker_fp.h +++ b/hw/net/rocker/rocker_fp.h @@ -40,6 +40,7 @@ int fp_port_set_settings(FpPort *port, uint32_t speed, bool fp_port_from_pport(uint32_t pport, uint32_t *port); World *fp_port_get_world(FpPort *port); void fp_port_set_world(FpPort *port, World *world); +bool fp_port_check_world(FpPort *port, World *world); bool fp_port_enabled(FpPort *port); void fp_port_enable(FpPort *port); void fp_port_disable(FpPort *port);