From c7d0ab28b4c51de50c1fded2502e47a37771b6c3 Mon Sep 17 00:00:00 2001 From: Tony Cheneau Date: Mon, 25 Mar 2013 17:59:30 +0000 Subject: [PATCH] 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 Signed-off-by: David S. Miller --- net/ieee802154/6lowpan.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/net/ieee802154/6lowpan.c b/net/ieee802154/6lowpan.c index f9524513847a..d1d4ee69da27 100644 --- a/net/ieee802154/6lowpan.c +++ b/net/ieee802154/6lowpan.c @@ -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) -- 2.20.1