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authorAlexander Aring <aar@pengutronix.de>2017-03-12 10:19:35 +0200
committerMarcel Holtmann <marcel@holtmann.org>2017-04-12 22:02:36 +0200
commit94e4a68039cc0c9d6e5cf708819cb8c7e770ebbf (patch)
treeafe4bbc4a7623455261528b58c6f76a116c1f942 /net/6lowpan
parentbe054fc830ff70aced3533fffc6b851fa604d241 (diff)
downloadlinux-stericsson-94e4a68039cc0c9d6e5cf708819cb8c7e770ebbf.tar.gz
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.c8
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);