2019-07-06 16:01:29

by Ing. Josua Mayer

[permalink] [raw]
Subject: [PATCH v3 3/3] bluetooth: 6lowpan: always check destination address

From: Josua Mayer <[email protected]>

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 <[email protected]>
Tested-by: Michael Scott <[email protected]>
Signed-off-by: Josua Mayer <[email protected]>
---
net/bluetooth/6lowpan.c | 12 ------------
1 file changed, 12 deletions(-)

diff --git a/net/bluetooth/6lowpan.c b/net/bluetooth/6lowpan.c
index f4e548e7b985..9d41de1ec90f 100644
--- a/net/bluetooth/6lowpan.c
+++ b/net/bluetooth/6lowpan.c
@@ -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,
--
2.16.4