Hello, There is a patch which fixes link-local address uncompression:
http://permalink.gmane.org/gmane.linux.network.zigbee.devel/1717 I came across a similar solution but didn't submit it as another patch already existed. This patch instead focus on fragmented packet with link-local address compression, which is related but a different bug. 2013/5/19 Alexander Aring <alex.ar...@gmail.com>: > Hi David, > > can you use a link-layer address on the current net-next kernel? > > I am asking because I can't use a link-layer address currently. > Your patch doesn't help to solve my problem with link-layer addresses. > > > To your patch: > > We get the link-layer addresses from skb not from the allocated > frame->skb. > > Here is the code: > > _saddr = mac_cb(skb)->sa.hwaddr; > _daddr = mac_cb(skb)->da.hwaddr; > > Here is skb != frame->skb so we don't need to copy it to frame->skb->cb > because we already the link-layer addresses from skb->cb. > > Is there another place in the code where we get the link-layer addresses > from allocated "frame" structure? frame->skb is used to reassemble the 6lowpan packet when new fragments are received. This is the 'fragments assembling' switch at the beginning of lowpan_process_data(). It will reassemble fragments until the packet is successfully reassembled. Once it is, skb is replaced: dev_kfree_skb(skb); skb = frame->skb; kfree(frame); And the process continues as with other 6lowpan packets. In particular: _saddr = mac_cb(skb)->sa.hwaddr; _daddr = mac_cb(skb)->da.hwaddr; Several lines later there are: err = lowpan_uncompress_addr(skb, &hdr.saddr, lowpan_llprefix, lowpan_unc_llconf[tmp], skb->data); err = lowpan_uncompress_addr(skb, &hdr.daddr, lowpan_llprefix, lowpan_unc_llconf[tmp], skb->data); These two lines should use _saddr/_daddr instead of skb->data, which fixes the link-local address uncompression. I'm able to use link-layer addresses with these two patches and it works well. > > Regards > Alex Regards, David ------------------------------------------------------------------------------ AlienVault Unified Security Management (USM) platform delivers complete security visibility with the essential security capabilities. Easily and efficiently configure, manage, and operate all of your security controls from a single console and one unified framework. Download a free trial. http://p.sf.net/sfu/alienvault_d2d _______________________________________________ Linux-zigbee-devel mailing list Linux-zigbee-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linux-zigbee-devel
