diff options
| author |   Alexander Aring <aar@pengutronix.de> | 2017-03-12 10:19:35 +0200 |
|---|---|---|
| committer |   Marcel Holtmann <marcel@holtmann.org> | 2017-04-12 22:02:36 +0200 |
| commit | 94e4a68039cc0c9d6e5cf708819cb8c7e770ebbf (patch) | |
| tree | afe4bbc4a7623455261528b58c6f76a116c1f942 /net/6lowpan | |
| parent | 6lowpan: Set MAC address length according to LOWPAN_LLTYPE (diff) | |
| download | linux-dev-94e4a68039cc0c9d6e5cf708819cb8c7e770ebbf.tar.xz linux-dev-94e4a68039cc0c9d6e5cf708819cb8c7e770ebbf.zip | |
6lowpan: iphc: override l2 packet information
The skb->pkt_type need to be set by L2, but on 6LoWPAN there exists L2
e.g. BTLE which doesn't has multicast addressing. If it's a multicast or
not is detected by IPHC headers multicast bit. The IPv6 layer will
evaluate this pkt_type, so we force set this type while uncompressing.
Should be okay for 802.15.4 as well.
Signed-off-by: Alexander Aring <aar@pengutronix.de>
Reviewed-by: Stefan Schmidt <stefan@osg.samsung.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Diffstat (limited to 'net/6lowpan')
| -rw-r--r-- | net/6lowpan/iphc.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/net/6lowpan/iphc.c b/net/6lowpan/iphc.c index 79f1fa22509a..fb5f6fa8f1df 100644 --- a/net/6lowpan/iphc.c +++ b/net/6lowpan/iphc.c @@ -666,6 +666,8 @@ int lowpan_header_decompress(struct sk_buff *skb, const struct net_device *dev, switch (iphc1 & (LOWPAN_IPHC_M | LOWPAN_IPHC_DAC)) { case LOWPAN_IPHC_M | LOWPAN_IPHC_DAC: + skb->pkt_type = PACKET_BROADCAST; + spin_lock_bh(&lowpan_dev(dev)->ctx.lock); ci = lowpan_iphc_ctx_get_by_id(dev, LOWPAN_IPHC_CID_DCI(cid)); if (!ci) { @@ -681,11 +683,15 @@ int lowpan_header_decompress(struct sk_buff *skb, const struct net_device *dev, spin_unlock_bh(&lowpan_dev(dev)->ctx.lock); break; case LOWPAN_IPHC_M: + skb->pkt_type = PACKET_BROADCAST; + /* multicast */ err = lowpan_uncompress_multicast_daddr(skb, &hdr.daddr, iphc1 & LOWPAN_IPHC_DAM_MASK); break; case LOWPAN_IPHC_DAC: + skb->pkt_type = PACKET_HOST; + spin_lock_bh(&lowpan_dev(dev)->ctx.lock); ci = lowpan_iphc_ctx_get_by_id(dev, LOWPAN_IPHC_CID_DCI(cid)); if (!ci) { @@ -701,6 +707,8 @@ int lowpan_header_decompress(struct sk_buff *skb, const struct net_device *dev, spin_unlock_bh(&lowpan_dev(dev)->ctx.lock); break; default: + skb->pkt_type = PACKET_HOST; + err = lowpan_iphc_uncompress_addr(skb, dev, &hdr.daddr, iphc1 & LOWPAN_IPHC_DAM_MASK, daddr); |