[bug?] bug in the htb netlink messages ?

[Fabrice HOBAYA]

Hi all,

I'm using the libnl 3.2.3 for rtnl_htb functions, here is my problem:

When I set the rate (and ceil) of a branch of the htb 
(rtnl_htb_set_rate(...) and rtnl_htb_set_ceil), the real observed rate 
is 16 times bigger whereas the get functions (rtnl_htb_get_rate(...) and 
rtnl_htb_get_ceil(...)) and the nl_object_dump function (result at the 
end of the mail) return the right set rate and ceil.

For example when I set rate and ceil to 15kbits/sec, the observed rate 
is 240kbits/sec (the parent has the same settings).

When I tried to debug with NLCB=debug, the request message for the 
setting of the htb is well acknowledged (error message with code 0) but 
seems to have a wrong total length (see below). The second attribute 
[ATTR 02] of the request is not readable without a documentation, so I 
can not continue debugging without help.

For information I've used a tc script (on the same system), and 
everything has worked normally.

Could someone gives me any idea on that ? Thanks in advance.

Best Regards,
Fabrice.

-- Debug: Sent Message:
--------------------------   BEGIN NETLINK MESSAGE 
---------------------------
   [HEADER] 16 octets
     .nlmsg_len = 2152 (*instead of 16+20+4+2104 = 2144 ???*)
     .nlmsg_type = 40 <route/class::new>
     .nlmsg_flags = 1029 <REQUEST,ACK,ATOMIC>
     .nlmsg_seq = 1329809071
     .nlmsg_pid = 5947
   [PAYLOAD] 20 octets
     00 00 00 00 09 00 00 00 01 00 01 00 00 00 01 00 00 00 
..................
     00 00                                                 ..
   [ATTR 01] 4 octets
     68 74 62 00                                           htb.
   [ATTR 02] 2104 octets
     30 00 01 [...]
---------------------------  END NETLINK MESSAGE   
---------------------------
-- Debug: Received Message:
--------------------------   BEGIN NETLINK MESSAGE 
---------------------------
   [HEADER] 16 octets
     .nlmsg_len = 36
     .nlmsg_type = 2 <ERROR>
     .nlmsg_flags = 0 <>
     .nlmsg_seq = 1329809071
     .nlmsg_pid = 5947
   [ERRORMSG] 20 octets
     .error = 0 "Success"
   [ORIGINAL MESSAGE] 16 octets
     .nlmsg_len = 16
     .nlmsg_type = 40 <0x28>
     .nlmsg_flags = 1029 <REQUEST,ACK,ATOMIC>
     .nlmsg_seq = 1329809071
     .nlmsg_pid = 5947
---------------------------  END NETLINK MESSAGE   
---------------------------
*
nl_dump_object(...) =>* class htb dev (null) id 1:2 parent 1:1 rate 
1.83KiB/s (15Kbit) log 2147483648 ceil 1.83KiB/s (15Kbit) log 2147483648 
prio 0

-- 
Fabrice HOBAYA
PhD - Ingénieur d'études Viveris Technologies
1 Avenue de l'Europe - Parc technologique du Canal -
Bat C - 1er étage - 31400 Toulouse - France
fabrice.hobaya at toulouse.viveris.com  

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.infradead.org/pipermail/libnl/attachments/20120221/154b6a2f/attachment.html>