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Message-Id: <1364270372-19430-4-git-send-email-tony.cheneau@amnesiak.org> Date: Mon, 25 Mar 2013 23:59:23 -0400 From: Tony Cheneau <tony.cheneau@...esiak.org> To: "David S. Miller" <davem@...emloft.net>, Eric Dumazet <eric.dumazet@...il.com> Cc: Alan Ott <alan@...nal11.us>, Alexander Smirnov <alex.bluesman.smirnov@...il.com>, netdev@...r.kernel.org, linux-zigbee-devel@...ts.sourceforge.net Subject: [PATCH v2 net-next 03/12] 6lowpan: always enable link-layer acknowledgments This feature is especially important when using fragmentation, because the reassembly mechanism cannot recover from the loss of a fragment. Note that some hardware ignore this flag and not will not transmit acknowledgments even if this is set. Signed-off-by: Tony Cheneau <tony.cheneau@...esiak.org> --- net/ieee802154/6lowpan.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/net/ieee802154/6lowpan.c b/net/ieee802154/6lowpan.c index 9f53904..e7f61de 100644 --- a/net/ieee802154/6lowpan.c +++ b/net/ieee802154/6lowpan.c @@ -584,6 +584,10 @@ 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); } -- 1.7.12.4 -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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