From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: Alexander Aring To: linux-bluetooth@vger.kernel.org Cc: marcel@holtmann.org, linux-wpan@vger.kernel.org, kernel@pengutronix.de, Alexander Aring Subject: [PATCH bluetooth 4/5] ieee802154: 6lowpan: ensure of sending 1280 packets Date: Tue, 19 Aug 2014 11:03:02 +0200 Message-Id: <1408438983-13892-5-git-send-email-alex.aring@gmail.com> In-Reply-To: <1408438983-13892-1-git-send-email-alex.aring@gmail.com> References: <1408438983-13892-1-git-send-email-alex.aring@gmail.com> List-ID: This patch changes the 1281 MTU to 1280. Others stack have only a 1280 byte array for uncompressed 6LoWPAN packets, this avoid that these stacks have an overflow. Sending 1281 uncompressed 6LoWPAN packets isn't also rfc complaint. Signed-off-by: Alexander Aring --- net/ieee802154/6lowpan_rtnl.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/ieee802154/6lowpan_rtnl.c b/net/ieee802154/6lowpan_rtnl.c index 71fa7d4..6591d27 100644 --- a/net/ieee802154/6lowpan_rtnl.c +++ b/net/ieee802154/6lowpan_rtnl.c @@ -437,7 +437,7 @@ static void lowpan_setup(struct net_device *dev) /* Frame Control + Sequence Number + Address fields + Security Header */ dev->hard_header_len = 2 + 1 + 20 + 14; dev->needed_tailroom = 2; /* FCS */ - dev->mtu = 1281; + dev->mtu = IPV6_MIN_MTU; dev->tx_queue_len = 0; dev->flags = IFF_BROADCAST | IFF_MULTICAST; dev->watchdog_timeo = 0; -- 2.0.3