static int lowpan_give_skb_to_device(struct sk_buff *skb)
{
skb->protocol = htons(ETH_P_IPV6);
+ skb->dev->stats.rx_packets++;
+ skb->dev->stats.rx_bytes += skb->len;
return netif_rx(skb);
}
int lowpan_iphc_decompress(struct sk_buff *skb)
{
- struct ieee802154_addr_sa sa, da;
struct ieee802154_hdr hdr;
- u8 iphc0, iphc1;
- void *sap, *dap;
if (ieee802154_hdr_peek_addrs(skb, &hdr) < 0)
return -EINVAL;
- raw_dump_table(__func__, "raw skb data dump", skb->data, skb->len);
-
- if (lowpan_fetch_skb_u8(skb, &iphc0) ||
- lowpan_fetch_skb_u8(skb, &iphc1))
- return -EINVAL;
-
- ieee802154_addr_to_sa(&sa, &hdr.source);
- ieee802154_addr_to_sa(&da, &hdr.dest);
-
- if (sa.addr_type == IEEE802154_ADDR_SHORT)
- sap = &sa.short_addr;
- else
- sap = &sa.hwaddr;
-
- if (da.addr_type == IEEE802154_ADDR_SHORT)
- dap = &da.short_addr;
- else
- dap = &da.hwaddr;
-
- return lowpan_header_decompress(skb, skb->dev, sap, sa.addr_type,
- IEEE802154_ADDR_LEN, dap, da.addr_type,
- IEEE802154_ADDR_LEN, iphc0, iphc1);
+ return lowpan_header_decompress(skb, skb->dev, &hdr.dest, &hdr.source);
}
static lowpan_rx_result lowpan_rx_h_iphc(struct sk_buff *skb)
if (wdev->type != ARPHRD_IEEE802154 ||
skb->pkt_type == PACKET_OTHERHOST ||
!lowpan_rx_h_check(skb))
- return NET_RX_DROP;
+ goto drop;
ldev = wdev->ieee802154_ptr->lowpan_dev;
if (!ldev || !netif_running(ldev))
- return NET_RX_DROP;
+ goto drop;
/* Replacing skb->dev and followed rx handlers will manipulate skb. */
skb = skb_share_check(skb, GFP_ATOMIC);
if (!skb)
- return NET_RX_DROP;
+ goto out;
skb->dev = ldev;
/* When receive frag1 it's likely that we manipulate the buffer.
lowpan_is_iphc(*skb_network_header(skb))) {
skb = skb_unshare(skb, GFP_ATOMIC);
if (!skb)
- return NET_RX_DROP;
+ goto out;
}
return lowpan_invoke_rx_handlers(skb);
+
+drop:
+ kfree_skb(skb);
+out:
+ return NET_RX_DROP;
}
static struct packet_type lowpan_packet_type = {