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| author | Lukasz Duda <lukasz.duda@nordicsemi.no> | 2016-01-13 16:57:48 +0100 |
|---|---|---|
| committer | Johan Hedberg <johan.hedberg@intel.com> | 2016-01-23 12:25:53 +0000 |
| commit | 87f5fedb3bebbbb566f847dd0c567fcea49a36a6 (patch) | |
| tree | cec0bee9047e0a1c71c5c04bb43f97efe080bc01 /net | |
| parent | 4c58f3282e3de43d34f8955f8eca676294380bf9 (diff) | |
| download | linux-87f5fedb3bebbbb566f847dd0c567fcea49a36a6.tar.gz | |
Bluetooth: 6lowpan: Fix handling of uncompressed IPv6 packets
This patch fixes incorrect handling of the 6lowpan packets that contain uncompressed IPv6 header. RFC4944 specifies a special dispatch for 6lowpan to carry uncompressed IPv6 header. This dispatch (1 byte long) has to be removed during reception and skb data pointer has to be moved. To correctly point in the beginning of the IPv6 header the dispatch byte has to be pulled off before packet can be processed by netif_rx_in(). Test scenario: IPv6 packets are not correctly interpreted by the network layer when IPv6 header is not compressed (e.g. ICMPv6 Echo Reply is not propagated correctly to the ICMPv6 layer because the extra byte will make the header look corrupted). Similar approach is done for IEEE 802.15.4. Signed-off-by: Lukasz Duda <lukasz.duda@nordicsemi.no> Signed-off-by: Glenn Ruben Bakke <glenn.ruben.bakke@nordicsemi.no> Acked-by: Jukka Rissanen <jukka.rissanen@linux.intel.com> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com> Cc: stable@vger.kernel.org # 4.4+
Diffstat (limited to 'net')
| -rw-r--r-- | net/bluetooth/6lowpan.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/net/bluetooth/6lowpan.c b/net/bluetooth/6lowpan.c index 58e1b3c97ed7..8a4cc2f7f0db 100644 --- a/net/bluetooth/6lowpan.c +++ b/net/bluetooth/6lowpan.c @@ -307,6 +307,9 @@ static int recv_pkt(struct sk_buff *skb, struct net_device *dev, /* check that it's our buffer */ if (lowpan_is_ipv6(*skb_network_header(skb))) { + /* Pull off the 1-byte of 6lowpan header. */ + skb_pull(skb, 1); + /* Copy the packet so that the IPv6 header is * properly aligned. */ |