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OpenCloudOS-Kernel
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6lowpan: Handle uncompressed IPv6 packets over 6LoWPAN 

Handle the reception of uncompressed packets (dispatch type = IPv6).

Signed-off-by: Alan Ott <alan@signal11.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Alan Ott 2013-01-16 19:09:48 +00:00 committed by David S. Miller
parent 0c446212c4
commit ee21c7e0d1
1 changed files with 32 additions and 9 deletions
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23
net/ieee802154/6lowpan.c
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@ -1147,6 +1147,28 @@ static int lowpan_rcv(struct sk_buff *skb, struct net_device *dev,
goto drop;
/* check that it's our buffer */
if (skb->data[0] == LOWPAN_DISPATCH_IPV6) {
/* Copy the packet so that the IPv6 header is
* properly aligned.
*/
local_skb = skb_copy_expand(skb, NET_SKB_PAD - 1,
skb_tailroom(skb), GFP_ATOMIC);
if (!local_skb)
goto drop;
local_skb->protocol = htons(ETH_P_IPV6);
local_skb->pkt_type = PACKET_HOST;
/* Pull off the 1-byte of 6lowpan header. */
skb_pull(local_skb, 1);
skb_reset_network_header(local_skb);
skb_set_transport_header(local_skb, sizeof(struct ipv6hdr));
lowpan_give_skb_to_devices(local_skb);
kfree_skb(local_skb);
kfree_skb(skb);
} else {
switch (skb->data[0] & 0xe0) {
case LOWPAN_DISPATCH_IPHC: /* ipv6 datagram */
case LOWPAN_DISPATCH_FRAG1: /* first fragment header */
@ -1161,6 +1183,7 @@ static int lowpan_rcv(struct sk_buff *skb, struct net_device *dev,
default:
break;
}
}
return NET_RX_SUCCESS;