Commit 688d94fd authored Jul 06, 2019 by Josua Mayer Committed by Marcel Holtmann Jul 06, 2019

Bluetooth: 6lowpan: always check destination address



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>

parent 5636376c

net/bluetooth/6lowpan.c

+0 −12

Original line number	Diff line number	Diff line
		@@ -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,

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