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Commit a437d274 authored by Alan Ott's avatar Alan Ott Committed by David S. Miller
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6lowpan: Make a copy of skb's delivered to 6lowpan 



Since lowpan_process_data() modifies the skb (by calling skb_pull()), we
need our own copy so that it doesn't affect the data received by other
protcols (in this case, af_ieee802154).

Signed-off-by: default avatarAlan Ott <alan@signal11.us>
Signed-off-by: default avatarDavid S. Miller <davem@tempietto.lan>
parent 1bed966c

net/ieee802154/6lowpan.c

+8 −1
Original line number Original line Diff line number Diff line
@@ -1133,6 +1133,8 @@ static int lowpan_validate(struct nlattr *tb[], struct nlattr *data[]) 
static int lowpan_rcv(struct sk_buff *skb, struct net_device *dev,

static int lowpan_rcv(struct sk_buff *skb, struct net_device *dev,

	struct packet_type *pt, struct net_device *orig_dev)

	struct packet_type *pt, struct net_device *orig_dev)

{

{

	struct sk_buff *local_skb;



	if (!netif_running(dev))

	if (!netif_running(dev))

		goto drop;

		goto drop;
@@ -1144,7 +1146,12 @@ static int lowpan_rcv(struct sk_buff *skb, struct net_device *dev, 
	case LOWPAN_DISPATCH_IPHC:	/* ipv6 datagram */

	case LOWPAN_DISPATCH_IPHC:	/* ipv6 datagram */

	case LOWPAN_DISPATCH_FRAG1:	/* first fragment header */

	case LOWPAN_DISPATCH_FRAG1:	/* first fragment header */

	case LOWPAN_DISPATCH_FRAGN:	/* next fragments headers */

	case LOWPAN_DISPATCH_FRAGN:	/* next fragments headers */

		lowpan_process_data(skb);

		local_skb = skb_clone(skb, GFP_ATOMIC);

		if (!local_skb)

			goto drop;

		lowpan_process_data(local_skb);



		kfree_skb(skb);

		break;

		break;

	default:

	default:

		break;

		break;