[lwip-devel] [bug #48825] lowpan6: source PAN ID is skipped without checking PAN ID compression flag

[Martine Lenders]

URL:
  <http://savannah.nongnu.org/bugs/?48825>

                 Summary: lowpan6: source PAN ID is skipped without checking
PAN ID compression flag
                 Project: lwIP - A Lightweight TCP/IP stack
            Submitted by: authmillenon
            Submitted on: Fri 19 Aug 2016 11:02:51 AM GMT
                Category: None
                Severity: 3 - Normal
              Item Group: None
                  Status: None
                 Privacy: Public
             Assigned to: None
             Open/Closed: Open
         Discussion Lock: Any
         Planned Release: None
            lwIP version: git head

    _______________________________________________________

Details:

Hi,

In lowpan6_input() (src/netif/lowpan6.c) the source PAN ID in the IEEE
802.15.4 header is skipped (in current version it is even commented with "/*
skip PAN ID. */". However, according to the IEEE 802.15.4 specs this field can
also be omitted, if the PAN_COMP bit is set the FCF. So if data comes in from
another implementation (e.g. Contiki's uIP or RIOT's GNRC) the packet is read
incorrectly (basically anything that would come after the source PAN), if they
have PAN compression activated.

Kind Regards,
Martine Lenders




    _______________________________________________________

Reply to this item at:

  <http://savannah.nongnu.org/bugs/?48825>

_______________________________________________
  Message sent via/by Savannah
  http://savannah.nongnu.org/