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Bluetooth: 6lowpan: always check destination address

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BLE based 6LoWPAN networks are highly constrained in bandwidth.
Do not take a short-cut, always check if the destination address is
known to belong to a peer.

As a side-effect this also removes any behavioral differences between
one, and two or more connected peers.

Acked-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Tested-by: Michael Scott <mike@foundries.io>
Signed-off-by: Josua Mayer <josua.mayer@jm0.eu>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Josua Mayer 2019-07-06 17:54:48 +02:00 committed by Marcel Holtmann
parent 5636376c26
commit 688d94fd0d
1 changed files with 0 additions and 12 deletions
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12
net/bluetooth/6lowpan.c
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@ -168,18 +168,6 @@ static inline struct lowpan_peer *peer_lookup_dst(struct lowpan_btle_dev *dev,
BT_DBG("peers %d addr %pI6c rt %p", count, daddr, rt);
/* If we have multiple 6lowpan peers, then check where we should
* send the packet. If only one peer exists, then we can send the
* packet right away.
*/
if (count == 1) {
rcu_read_lock();
peer = list_first_or_null_rcu(&dev->peers, struct lowpan_peer,
list);
rcu_read_unlock();
return peer;
}
if (!rt) {
if (ipv6_addr_any(&lowpan_cb(skb)->gw)) {
/* There is neither route nor gateway,