| Message ID | 1350965397-12384-4-git-send-email-tony.cheneau@amnesiak.org |
|---|---|
| State | Changes Requested, archived |
| Delegated to: | David Miller |
| Headers | show |
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); }
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 <tony.cheneau@amnesiak.org> --- net/ieee802154/6lowpan.c | 4 ++++ 1 files changed, 4 insertions(+), 0 deletions(-)