From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dmitry Eremin-Solenikov 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> References: <1253052785-26190-1-git-send-email-dbaryshkov@gmail.com> <1253052785-26190-2-git-send-email-dbaryshkov@gmail.com> Cc: linux-zigbee-devel@lists.sourceforge.net, Sergey Lapin , netdev@vger.kernel.org To: "David S. Miller" Return-path: 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) In-Reply-To: <1253052785-26190-2-git-send-email-dbaryshkov@gmail.com> Sender: netdev-owner@vger.kernel.org List-ID: 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; -- 1.6.3.3