Alexander Aring wrote: > Hi, > > On Fri, Mar 08, 2013 at 11:21:38AM +0900, YOSHIFUJI Hideaki wrote: >> Hi, >> >> Alexander Aring wrote: >>> Hi, >>> >>> I don't know if this is a right solution for that, because other >>> functions like addrconf_ifid_infiniband to manipulate eui after memcpy, >>> too. >>> >>> But this patch solves my problems with ieee802154 stack. >> >> What kind of problems do you have? >> > > I compile with #define DEBUG enabled in net/ieee802154/6lowpan.c > > The problem is the address compression in 6lowpan. > > First device has address fe80::a000:0:0:1/64. Second device has address > fe80::a000:0:0:2/64. I use only a ping6 to check connection. > > Debug Information on the receiving side: > Without your patch which is working. > > iphc0 = 7a, iphc1 = 11 > NH flag is set, next header carried inline: 3a > source address stateless compression > (lowpan_uncompress_addr) linklocal address: > a0 00 00 00 00 00 00 02 > uncompressing 2 + 8 => > fe 80 00 00 00 00 00 00 a0 00 00 00 00 00 00 02 > dest: stateless compression > (lowpan_uncompress_addr) linklocal address: > a0 00 00 00 00 00 00 01 > uncompressing 2 + 8 => > fe 80 00 00 00 00 00 00 a0 00 00 00 00 00 00 01 > skb headroom size = 40, data length = 64 > IPv6 header dump: > version = 6 > length = 64 > nexthdr = 0x3a > hop_lim = 64 > > > With your patch, which isn't working anymore: > > iphc0 = 7b, iphc1 = 3b > NH flag is set, next header carried inline: 3a > source address stateless compression > (lowpan_uncompress_addr) linklocal address: > 02 85 00 3a 20 00 00 00 > uncompressing 2 + 0 => > fe 80 00 00 00 00 00 00 00 85 00 3a 20 00 00 00 > dest: non context-based mcast compression > uncompressing 2 + 1 => > ff 02 00 00 00 00 00 00 00 00 00 00 00 00 00 02 > skb headroom size = 25, data length = 24 > IPv6 header dump: > version = 6 > length = 24 > nexthdr = 0x3a > hop_lim = 255 > > And for every ipv6 packet I got: > ICMPv6 checksum failed [fe80:0000:0000:0000:0001:ff00:0001:8700 > > ff02:0000:0000:0000:0000:0001:ff00:0001] > > I seems that the reconstructed destination address and header length are > not right.
That's wired. It is expected to work whatever valid source/destination addresses are used, right? --yoshfuji ------------------------------------------------------------------------------ Minimize network downtime and maximize team effectiveness. Reduce network management and security costs.Learn how to hire the most talented Cisco Certified professionals. Visit the Employer Resources Portal http://www.cisco.com/web/learning/employer_resources/index.html _______________________________________________ Linux-zigbee-devel mailing list Linux-zigbee-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linux-zigbee-devel
