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.chen...@amnesiak.org>
---
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
------------------------------------------------------------------------------
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