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6lowpan: obtain IEEE802.15.4 sequence number from the MAC layer 

Sets the sequence number in the frame format. Without this fix, the sequence
number is always set to 0. This makes trafic analysis very hard.

Signed-off-by: Tony Cheneau <tony.cheneau@amnesiak.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Tony Cheneau 2013-03-25 17:59:30 +00:00 committed by David S. Miller
parent 0483546a3d
commit c7d0ab28b4
1 changed files with 8 additions and 0 deletions
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8
net/ieee802154/6lowpan.c
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@ -573,6 +573,7 @@ static int lowpan_header_create(struct sk_buff *skb,
*/
{
mac_cb(skb)->flags = IEEE802154_FC_TYPE_DATA;
mac_cb(skb)->seq = ieee802154_mlme_ops(dev)->get_dsn(dev);
/* prepare wpan address data */
sa.addr_type = IEEE802154_ADDR_LONG;
@ -1127,6 +1128,12 @@ static u16 lowpan_get_short_addr(const struct net_device *dev)
return ieee802154_mlme_ops(real_dev)->get_short_addr(real_dev);
}
static u8 lowpan_get_dsn(const struct net_device *dev)
{
struct net_device *real_dev = lowpan_dev_info(dev)->real_dev;
return ieee802154_mlme_ops(real_dev)->get_dsn(real_dev);
}
static struct header_ops lowpan_header_ops = {
.create = lowpan_header_create,
};
@ -1140,6 +1147,7 @@ static struct ieee802154_mlme_ops lowpan_mlme = {
.get_pan_id = lowpan_get_pan_id,
.get_phy = lowpan_get_phy,
.get_short_addr = lowpan_get_short_addr,
.get_dsn = lowpan_get_dsn,
};
static void lowpan_setup(struct net_device *dev)