From patchwork Tue Sep 15 22:13:00 2009 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dmitry Baryshkov X-Patchwork-Id: 33672 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming@bilbo.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from ozlabs.org (ozlabs.org [203.10.76.45]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "mx.ozlabs.org", Issuer "CA Cert Signing Authority" (verified OK)) by bilbo.ozlabs.org (Postfix) with ESMTPS id BDA62B7B93 for ; Wed, 16 Sep 2009 08:14:16 +1000 (EST) Received: by ozlabs.org (Postfix) id AD2ACDDDA0; Wed, 16 Sep 2009 08:14:16 +1000 (EST) Delivered-To: patchwork-incoming@ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.176.167]) by ozlabs.org (Postfix) with ESMTP id 5725FDDD0C for ; Wed, 16 Sep 2009 08:14:16 +1000 (EST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758119AbZIOWN7 (ORCPT ); Tue, 15 Sep 2009 18:13:59 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751917AbZIOWN6 (ORCPT ); Tue, 15 Sep 2009 18:13:58 -0400 Received: from mail-ew0-f206.google.com ([209.85.219.206]:63125 "EHLO mail-ew0-f206.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752048AbZIOWN4 (ORCPT ); Tue, 15 Sep 2009 18:13:56 -0400 Received: by mail-ew0-f206.google.com with SMTP id 2so922640ewy.17 for ; Tue, 15 Sep 2009 15:13:59 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:from:to:cc:subject:date :message-id:x-mailer:in-reply-to:references; bh=WB7ap/XoDrjcF3saftXLeIDW9SNu+YPLJw6iQN7KSNY=; b=Pc/uqfNB/ljks0zJXvOfe0cLtrtycwDOuLvU4ubbhpV6qmH6Ww8Y1WaQuHyNpjc+QK 6FsMj4xHiWxwAiqSdx93IoxeuhxVhJHLVLMGi6uWurqLKOWOT1lRUU/dquc/5cqjcqRj zid0hlpi7/vcCvKASQuzoTBbWqK5w9I8f2D0k= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=from:to:cc:subject:date:message-id:x-mailer:in-reply-to:references; b=JdshQBjN9gQ/d6+azjHp/vtZQCIuknzwNERJWyWIZtAnDua9fOii+oCraGdOKdbDAm niU/IUWtWu/EVqr9No988xSpBUnFzDQ+VEX6uvu00icAZJdJsJ2asa3iY3m/VTAtTEZn tOAb2P2qImOSWrWINPPtxYFM0NhXa8J8ZKIDM= Received: by 10.211.129.20 with SMTP id g20mr9216478ebn.12.1253052838998; Tue, 15 Sep 2009 15:13:58 -0700 (PDT) Received: from localhost.localdomain (ppp91-122-8-155.pppoe.avangarddsl.ru [91.122.8.155]) by mx.google.com with ESMTPS id 7sm381518eyb.37.2009.09.15.15.13.57 (version=SSLv3 cipher=RC4-MD5); Tue, 15 Sep 2009 15:13:58 -0700 (PDT) From: Dmitry Eremin-Solenikov To: "David S. Miller" Cc: linux-zigbee-devel@lists.sourceforge.net, Sergey Lapin , netdev@vger.kernel.org Subject: [PATCH 2/7] ieee802154: add locking for seq numbers Date: Wed, 16 Sep 2009 02:13:00 +0400 Message-Id: <1253052785-26190-3-git-send-email-dbaryshkov@gmail.com> X-Mailer: git-send-email 1.6.3.3 In-Reply-To: <1253052785-26190-2-git-send-email-dbaryshkov@gmail.com> References: <1253052785-26190-1-git-send-email-dbaryshkov@gmail.com> <1253052785-26190-2-git-send-email-dbaryshkov@gmail.com> Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Signed-off-by: Dmitry Eremin-Solenikov --- net/ieee802154/netlink.c | 4 ++++ 1 files changed, 4 insertions(+), 0 deletions(-) diff --git a/net/ieee802154/netlink.c b/net/ieee802154/netlink.c index 2106ecb..ca767bd 100644 --- a/net/ieee802154/netlink.c +++ b/net/ieee802154/netlink.c @@ -35,6 +35,7 @@ #include static unsigned int ieee802154_seq_num; +static DEFINE_SPINLOCK(ieee802154_seq_lock); static struct genl_family ieee802154_coordinator_family = { .id = GENL_ID_GENERATE, @@ -57,12 +58,15 @@ static struct sk_buff *ieee802154_nl_create(int flags, u8 req) { void *hdr; struct sk_buff *msg = nlmsg_new(NLMSG_GOODSIZE, GFP_ATOMIC); + unsigned long f; if (!msg) return NULL; + spin_lock_irqsave(&ieee802154_seq_lock, f); hdr = genlmsg_put(msg, 0, ieee802154_seq_num++, &ieee802154_coordinator_family, flags, req); + spin_unlock_irqrestore(&ieee802154_seq_lock, f); if (!hdr) { nlmsg_free(msg); return NULL;