From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tony Cheneau Subject: [PATCH net-next 03/15] 6lowpan: always enable link-layer acknowledgments Date: Tue, 23 Oct 2012 00:09:45 -0400 Message-ID: <1350965397-12384-4-git-send-email-tony.cheneau@amnesiak.org> References: <1350965397-12384-1-git-send-email-tony.cheneau@amnesiak.org> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Cc: netdev-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Alan Ott , linux-zigbee-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org To: "David S. Miller" Return-path: In-Reply-To: <1350965397-12384-1-git-send-email-tony.cheneau-jNfjcPZKvDhg9hUCZPvPmw@public.gmane.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: linux-zigbee-devel-bounces-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org List-Id: netdev.vger.kernel.org This feature is especially important when using fragmentation, because the reassembly mechanism can not recover from the loss of a fragment. Note that some hardware ignore this flag and not will not transmit any acknowledgments if this is set. Signed-off-by: Tony Cheneau --- net/ieee802154/6lowpan.c | 4 ++++ 1 files changed, 4 insertions(+), 0 deletions(-) diff --git a/net/ieee802154/6lowpan.c b/net/ieee802154/6lowpan.c index b53a71a4..49d91df 100644 --- a/net/ieee802154/6lowpan.c +++ b/net/ieee802154/6lowpan.c @@ -589,6 +589,10 @@ static int lowpan_header_create(struct sk_buff *skb, mac_cb(skb)->flags = IEEE802154_FC_TYPE_DATA; + /* request acknowledgment when possible */ + if (!lowpan_is_addr_broadcast(daddr)) + mac_cb(skb)->flags |= MAC_CB_FLAG_ACKREQ; + return dev_hard_header(skb, lowpan_dev_info(dev)->real_dev, type, (void *)&da, (void *)&sa, skb->len); } -- 1.7.8.6 ------------------------------------------------------------------------------ Everyone hates slow websites. So do we. Make your web apps faster with AppDynamics Download AppDynamics Lite for free today: http://p.sf.net/sfu/appdyn_sfd2d_oct