From: Josua Mayer <josua.mayer@jm0.eu>
To: linux-bluetooth@vger.kernel.org
Cc: Josua Mayer <josua.mayer@jm0.eu>,
Jukka Rissanen <jukka.rissanen@linux.intel.com>,
Michael Scott <mike@foundries.io>,
Marcel Holtmann <marcel@holtmann.org>,
Johan Hedberg <johan.hedberg@gmail.com>,
"David S. Miller" <davem@davemloft.net>
Subject: [PATCH v2 1/3] bluetooth: 6lowpan: search for destination address in all peers
Date: Tue, 12 Mar 2019 20:16:23 +0100 [thread overview]
Message-ID: <20190312191626.20634-2-josua.mayer@jm0.eu> (raw)
In-Reply-To: <20190312191626.20634-1-josua.mayer@jm0.eu>
Handle overlooked case where the target address is assigned to a peer
and neither route nor gateway exist.
For one peer, no checks are performed to see if it is meant to receive
packets for a given address.
As soon as there is a second peer however, checks are performed
to deal with routes and gateways for handling complex setups with
multiple hops to a target address.
This logic assumed that no route and no gateway imply that the
destination address can not be reached, which is false in case of a
direct peer.
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>
---
net/bluetooth/6lowpan.c | 14 ++++++++++----
1 file changed, 10 insertions(+), 4 deletions(-)
diff --git a/net/bluetooth/6lowpan.c b/net/bluetooth/6lowpan.c
index a7cd23f00bde..50530561da98 100644
--- a/net/bluetooth/6lowpan.c
+++ b/net/bluetooth/6lowpan.c
@@ -187,10 +187,16 @@ static inline struct lowpan_peer *peer_lookup_dst(struct lowpan_btle_dev *dev,
}
if (!rt) {
- nexthop = &lowpan_cb(skb)->gw;
-
- if (ipv6_addr_any(nexthop))
- return NULL;
+ if (ipv6_addr_any(&lowpan_cb(skb)->gw)) {
+ /* There is neither route nor gateway,
+ * probably the destination is a direct peer.
+ */
+ nexthop = daddr;
+ } else {
+ /* There is a known gateway
+ */
+ nexthop = &lowpan_cb(skb)->gw;
+ }
} else {
nexthop = rt6_nexthop(rt, daddr);
--
2.21.0
next prev parent reply other threads:[~2019-03-12 19:19 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-02-08 15:25 [PATCH 0/3] bluetooth: 6lowpan: multiple peers and addresses Josua Mayer
2019-02-08 15:25 ` [PATCH 1/3] bluetooth: 6lowpan: search for destination address in all peers Josua Mayer
2019-02-08 15:25 ` [PATCH 2/3] bluetooth: 6lowpan: check neighbour table for SLAAC Josua Mayer
2019-03-07 10:41 ` Johan Hedberg
2019-03-12 16:23 ` Josua Mayer
2019-02-08 15:25 ` [PATCH 3/3] bluetooth: 6lowpan: always check destination address Josua Mayer
2019-02-28 20:00 ` [PATCH 0/3] bluetooth: 6lowpan: multiple peers and addresses Josua Mayer
2019-02-28 20:30 ` Michael Scott
2019-03-06 18:10 ` Michael Scott
2019-03-07 9:16 ` Jukka Rissanen
2019-03-12 19:16 ` [PATCH v2 " Josua Mayer
2019-03-12 19:16 ` Josua Mayer [this message]
2019-03-12 19:16 ` [PATCH v2 2/3] bluetooth: 6lowpan: check neighbour table for SLAAC Josua Mayer
2019-03-12 19:16 ` [PATCH v2 3/3] bluetooth: 6lowpan: always check destination address Josua Mayer
2019-03-30 15:51 ` [PATCH v2 0/3] bluetooth: 6lowpan: multiple peers and addresses Josua Mayer
2019-05-13 10:11 ` [PATCH RESEND v2 1/3] bluetooth: 6lowpan: search for destination address in all peers Josua Mayer
2019-05-13 10:12 ` [PATCH RESEND v2 3/3] bluetooth: 6lowpan: always check destination address Josua Mayer
2019-05-13 10:12 ` [PATCH RESEND v2 2/3] bluetooth: 6lowpan: check neighbour table for SLAAC Josua Mayer
2019-05-13 10:11 ` [PATCH RESEND v2 0/3] bluetooth: 6lowpan: multiple peers and addresses Josua Mayer
2019-07-06 11:11 ` Marcel Holtmann
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