diff options
Diffstat (limited to 'net/ieee802154/6lowpan_iphc.c')
| -rw-r--r-- | net/ieee802154/6lowpan_iphc.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/net/ieee802154/6lowpan_iphc.c b/net/ieee802154/6lowpan_iphc.c index 02bf74d80e72..a70fa66b5357 100644 --- a/net/ieee802154/6lowpan_iphc.c +++ b/net/ieee802154/6lowpan_iphc.c @@ -309,9 +309,14 @@ uncompress_udp_header(struct sk_buff *skb, struct udphdr *uh) pr_debug("uncompressed UDP ports: src = %d, dst = %d\n", ntohs(uh->source), ntohs(uh->dest)); - /* copy checksum */ - memcpy(&uh->check, &skb->data[0], 2); - skb_pull(skb, 2); + /* checksum */ + if (tmp & LOWPAN_NHC_UDP_CS_C) { + pr_debug_ratelimited("checksum elided currently not supported\n"); + goto err; + } else { + memcpy(&uh->check, &skb->data[0], 2); + skb_pull(skb, 2); + } /* * UDP lenght needs to be infered from the lower layers |