From patchwork Thu Apr 7 18:54:04 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexander Aring X-Patchwork-Id: 8776621 Return-Path: X-Original-To: patchwork-linux-wpan@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 20BEE9F3D1 for ; Thu, 7 Apr 2016 19:00:48 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 1031A20263 for ; Thu, 7 Apr 2016 19:00:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 371A920222 for ; Thu, 7 Apr 2016 19:00:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932419AbcDGTAn (ORCPT ); Thu, 7 Apr 2016 15:00:43 -0400 Received: from metis.ext.4.pengutronix.de ([92.198.50.35]:56074 "EHLO metis.ext.4.pengutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757416AbcDGSyd (ORCPT ); Thu, 7 Apr 2016 14:54:33 -0400 Received: from gallifrey.ext.pengutronix.de ([2001:67c:670:201:5054:ff:fe8d:eefb] helo=omega.localdomain) by metis.ext.pengutronix.de with esmtp (Exim 4.80) (envelope-from ) id 1aoF4a-0003du-4U; Thu, 07 Apr 2016 20:54:32 +0200 From: Alexander Aring To: linux-wpan@vger.kernel.org Cc: kernel@pengutronix.de, jukka.rissanen@linux.intel.com, hannes@stressinduktion.org, stefan@osg.samsung.com, mcr@sandelman.ca, werner@almesberger.net, Alexander Aring Subject: [RFCv2 bluetooth-next 03/21] nl802154: avoid address change while running lowpan Date: Thu, 7 Apr 2016 20:54:04 +0200 Message-Id: <1460055262-4330-4-git-send-email-aar@pengutronix.de> X-Mailer: git-send-email 2.8.0 In-Reply-To: <1460055262-4330-1-git-send-email-aar@pengutronix.de> References: <1460055262-4330-1-git-send-email-aar@pengutronix.de> X-SA-Exim-Connect-IP: 2001:67c:670:201:5054:ff:fe8d:eefb X-SA-Exim-Mail-From: aar@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-wpan@vger.kernel.org Sender: linux-wpan-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-wpan@vger.kernel.org X-Spam-Status: No, score=-7.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=ham 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 The generation of autoconfigured IPv6 link-local addresses starts with a notification on interface up. To handle autoconfiguration according to RFC 4944 requires pan id and short address to generate an autoconfigured link-local address. This patch will avoid changing of these link-layer address configuration while lowpan interface is up. Reviewed-by: Stefan Schmidt Signed-off-by: Alexander Aring --- net/ieee802154/nl802154.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/net/ieee802154/nl802154.c b/net/ieee802154/nl802154.c index 16ef0d9..5f1dc4b 100644 --- a/net/ieee802154/nl802154.c +++ b/net/ieee802154/nl802154.c @@ -1074,6 +1074,11 @@ static int nl802154_set_pan_id(struct sk_buff *skb, struct genl_info *info) if (netif_running(dev)) return -EBUSY; + if (wpan_dev->lowpan_dev) { + if (netif_running(wpan_dev->lowpan_dev)) + return -EBUSY; + } + /* don't change address fields on monitor */ if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR || !info->attrs[NL802154_ATTR_PAN_ID]) @@ -1105,6 +1110,11 @@ static int nl802154_set_short_addr(struct sk_buff *skb, struct genl_info *info) if (netif_running(dev)) return -EBUSY; + if (wpan_dev->lowpan_dev) { + if (netif_running(wpan_dev->lowpan_dev)) + return -EBUSY; + } + /* don't change address fields on monitor */ if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR || !info->attrs[NL802154_ATTR_SHORT_ADDR])