libnl 3 with kernel < 2.6.38
Thierry Reding
thierry.reding at avionic-design.de
Wed Mar 23 08:03:29 EDT 2011
* Thomas Graf wrote:
> On Wed, Mar 23, 2011 at 10:50:06AM +0100, Thierry Reding wrote:
> > > This is not expected behaviour.
> > >
> > > Can you give me some additional details on what kind of link change
> > > you do?
> >
> > The following is the function that exhibits the described behaviour:
>
> Can you run your code with the environment variable NLCB=debug
>
> $ NLCB=debug ./program
>
> and post the output of that?
>
> I suspect the problem is the inclusion of the IFLA_AF_SPEC
> attribute.
Attached.
Cheers,
Thierry
-------------- next part --------------
-- Debug: Sent Message:
-------------------------- BEGIN NETLINK MESSAGE ---------------------------
[HEADER] 16 octets
.nlmsg_len = 20
.nlmsg_type = 18 <route/link::get>
.nlmsg_flags = 773 <REQUEST,ACK,ROOT,MATCH>
.nlmsg_seq = 1009839801
.nlmsg_pid = 1980
[PAYLOAD] 16 octets
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
[LEFTOVER] -12 octets
--------------------------- END NETLINK MESSAGE ---------------------------
-- Debug: Received Message:
-------------------------- BEGIN NETLINK MESSAGE ---------------------------
[HEADER] 16 octets
.nlmsg_len = 424
.nlmsg_type = 16 <route/link::new>
.nlmsg_flags = 2 <MULTI>
.nlmsg_seq = 1009839801
.nlmsg_pid = 1980
[PAYLOAD] 16 octets
00 00 04 03 01 00 00 00 49 00 01 00 00 00 00 00 ........I.......
[ATTR 03] 3 octets
6c 6f 00 lo.
[PADDING] 1 octets
00 .
[ATTR 13] 4 octets
00 00 00 00 ....
[ATTR 16] 1 octets
00 .
[PADDING] 3 octets
00 00 00 ...
[ATTR 17] 1 octets
00 .
[PADDING] 3 octets
00 00 00 ...
[ATTR 04] 4 octets
34 40 00 00 4 at ..
[ATTR 06] 8 octets
6e 6f 71 75 65 75 65 00 noqueue.
[ATTR 14] 28 octets
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ..................
00 00 00 00 00 00 00 00 00 00 ..........
[ATTR 01] 6 octets
00 00 00 00 00 00 ......
[PADDING] 2 octets
00 00 ..
[ATTR 02] 6 octets
00 00 00 00 00 00 ......
[PADDING] 2 octets
00 00 ..
[ATTR 07] 92 octets
04 00 00 00 04 00 00 00 24 01 00 00 24 01 00 00 00 00 ........$...$.....
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ..................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ..................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ..................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ..................
00 00 ..
[ATTR 23] 184 octets
04 00 00 00 00 00 00 00 04 00 00 00 00 00 00 00 24 01 ................$.
00 00 00 00 00 00 24 01 00 00 00 00 00 00 00 00 00 00 ......$...........
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ..................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ..................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ..................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ..................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ..................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ..................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ..................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ..................
00 00 00 00 ....
--------------------------- END NETLINK MESSAGE ---------------------------
-- Debug: Received Message:
-------------------------- BEGIN NETLINK MESSAGE ---------------------------
[HEADER] 16 octets
.nlmsg_len = 420
.nlmsg_type = 16 <route/link::new>
.nlmsg_flags = 2 <MULTI>
.nlmsg_seq = 1009839801
.nlmsg_pid = 1980
[PAYLOAD] 16 octets
00 00 08 03 02 00 00 00 80 00 00 00 00 00 00 00 ................
[ATTR 03] 5 octets
73 69 74 30 00 sit0.
[PADDING] 3 octets
00 00 00 ...
[ATTR 13] 4 octets
00 00 00 00 ....
[ATTR 16] 1 octets
02 .
[PADDING] 3 octets
00 00 00 ...
[ATTR 17] 1 octets
00 .
[PADDING] 3 octets
00 00 00 ...
[ATTR 04] 4 octets
c8 05 00 00 ....
[ATTR 06] 5 octets
6e 6f 6f 70 00 noop.
[PADDING] 3 octets
00 00 00 ...
[ATTR 14] 28 octets
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ..................
00 00 00 00 00 00 00 00 00 00 ..........
[ATTR 01] 4 octets
00 00 00 00 ....
[ATTR 02] 4 octets
00 00 00 00 ....
[ATTR 07] 92 octets
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ..................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ..................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ..................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ..................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ..................
00 00 ..
[ATTR 23] 184 octets
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ..................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ..................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ..................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ..................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ..................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ..................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ..................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ..................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ..................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ..................
00 00 00 00 ....
--------------------------- END NETLINK MESSAGE ---------------------------
-- Debug: Received Message:
-------------------------- BEGIN NETLINK MESSAGE ---------------------------
[HEADER] 16 octets
.nlmsg_len = 444
.nlmsg_type = 16 <route/link::new>
.nlmsg_flags = 2 <MULTI>
.nlmsg_seq = 1009839801
.nlmsg_pid = 1980
[PAYLOAD] 16 octets
00 00 01 03 03 00 00 00 80 00 00 00 00 00 00 00 ................
[ATTR 03] 8 octets
69 70 36 74 6e 6c 30 00 ip6tnl0.
[ATTR 13] 4 octets
00 00 00 00 ....
[ATTR 16] 1 octets
02 .
[PADDING] 3 octets
00 00 00 ...
[ATTR 17] 1 octets
00 .
[PADDING] 3 octets
00 00 00 ...
[ATTR 04] 4 octets
ac 05 00 00 ....
[ATTR 06] 5 octets
6e 6f 6f 70 00 noop.
[PADDING] 3 octets
00 00 00 ...
[ATTR 14] 28 octets
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ..................
00 00 00 00 00 00 00 00 00 00 ..........
[ATTR 01] 16 octets
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
[ATTR 02] 16 octets
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
[ATTR 07] 92 octets
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ..................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ..................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ..................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ..................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ..................
00 00 ..
[ATTR 23] 184 octets
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ..................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ..................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ..................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ..................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ..................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ..................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ..................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ..................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ..................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ..................
00 00 00 00 ....
--------------------------- END NETLINK MESSAGE ---------------------------
-- Debug: Received Message:
-------------------------- BEGIN NETLINK MESSAGE ---------------------------
[HEADER] 16 octets
.nlmsg_len = 436
.nlmsg_type = 16 <route/link::new>
.nlmsg_flags = 2 <MULTI>
.nlmsg_seq = 1009839801
.nlmsg_pid = 1980
[PAYLOAD] 16 octets
00 00 01 00 04 00 00 00 02 10 00 00 00 00 00 00 ................
[ATTR 03] 5 octets
65 74 68 30 00 eth0.
[PADDING] 3 octets
00 00 00 ...
[ATTR 13] 4 octets
e8 03 00 00 ....
[ATTR 16] 1 octets
02 .
[PADDING] 3 octets
00 00 00 ...
[ATTR 17] 1 octets
00 .
[PADDING] 3 octets
00 00 00 ...
[ATTR 04] 4 octets
dc 05 00 00 ....
[ATTR 06] 5 octets
6e 6f 6f 70 00 noop.
[PADDING] 3 octets
00 00 00 ...
[ATTR 14] 28 octets
00 00 bc fe 00 00 00 00 00 00 be fe 00 00 00 00 00 00 ..................
00 00 00 00 00 00 17 00 00 00 ..........
[ATTR 01] 6 octets
00 d0 c9 b8 70 71 ....pq
[PADDING] 2 octets
00 00 ..
[ATTR 02] 6 octets
ff ff ff ff ff ff ......
[PADDING] 2 octets
00 00 ..
[ATTR 07] 92 octets
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ..................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ..................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ..................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ..................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ..................
00 00 ..
[ATTR 23] 184 octets
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ..................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ..................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ..................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ..................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ..................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ..................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ..................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ..................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ..................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ..................
00 00 00 00 ....
[ATTR 21] 4 octets
00 00 00 00 ....
--------------------------- END NETLINK MESSAGE ---------------------------
-- Debug: Received Message:
-------------------------- BEGIN NETLINK MESSAGE ---------------------------
[HEADER] 16 octets
.nlmsg_len = 20
.nlmsg_type = 3 <DONE>
.nlmsg_flags = 2 <MULTI>
.nlmsg_seq = 1009839801
.nlmsg_pid = 1980
[PAYLOAD] 4 octets
00 00 00 00 ....
--------------------------- END NETLINK MESSAGE ---------------------------
-- Debug: End of multipart message block: type=DONE length=20 flags=<MULTI> sequence-nr=1009839801 pid=1980
-- Debug: Sent Message:
-------------------------- BEGIN NETLINK MESSAGE ---------------------------
[HEADER] 16 octets
.nlmsg_len = 36
.nlmsg_type = 19 <route/link::set>
.nlmsg_flags = 5 <REQUEST,ACK>
.nlmsg_seq = 1009839802
.nlmsg_pid = 1980
[PAYLOAD] 16 octets
00 00 00 00 02 00 00 00 81 00 00 00 00 00 00 00 ................
[ATTR 26] 0 octets
--------------------------- END NETLINK MESSAGE ---------------------------
-- Debug: Received Message:
-------------------------- BEGIN NETLINK MESSAGE ---------------------------
[HEADER] 16 octets
.nlmsg_len = 56
.nlmsg_type = 2 <ERROR>
.nlmsg_flags = 0 <>
.nlmsg_seq = 1009839802
.nlmsg_pid = 1980
[ERRORMSG] 20 octets
.error = -22 "Invalid argument"
[ORIGINAL MESSAGE] 16 octets
.nlmsg_len = 16
.nlmsg_type = 19 <0x13>
.nlmsg_flags = 5 <REQUEST,ACK>
.nlmsg_seq = 1009839802
.nlmsg_pid = 1980
--------------------------- END NETLINK MESSAGE ---------------------------
-- Error received: Invalid argument
-- Original message: type=0x13 length=36 flags=<REQUEST,ACK> sequence-nr=1009839802 pid=1980
-- Debug: Sent Message:
-------------------------- BEGIN NETLINK MESSAGE ---------------------------
[HEADER] 16 octets
.nlmsg_len = 36
.nlmsg_type = 19 <route/link::set>
.nlmsg_flags = 5 <REQUEST,ACK>
.nlmsg_seq = 1009839803
.nlmsg_pid = 1980
[PAYLOAD] 16 octets
00 00 00 00 03 00 00 00 81 00 00 00 00 00 00 00 ................
[ATTR 26] 0 octets
--------------------------- END NETLINK MESSAGE ---------------------------
-- Debug: Received Message:
-------------------------- BEGIN NETLINK MESSAGE ---------------------------
[HEADER] 16 octets
.nlmsg_len = 56
.nlmsg_type = 2 <ERROR>
.nlmsg_flags = 0 <>
.nlmsg_seq = 1009839803
.nlmsg_pid = 1980
[ERRORMSG] 20 octets
.error = -22 "Invalid argument"
[ORIGINAL MESSAGE] 16 octets
.nlmsg_len = 16
.nlmsg_type = 19 <0x13>
.nlmsg_flags = 5 <REQUEST,ACK>
.nlmsg_seq = 1009839803
.nlmsg_pid = 1980
--------------------------- END NETLINK MESSAGE ---------------------------
-- Error received: Invalid argument
-- Original message: type=0x13 length=36 flags=<REQUEST,ACK> sequence-nr=1009839803 pid=1980
-- Debug: Sent Message:
-------------------------- BEGIN NETLINK MESSAGE ---------------------------
[HEADER] 16 octets
.nlmsg_len = 36
.nlmsg_type = 19 <route/link::set>
.nlmsg_flags = 5 <REQUEST,ACK>
.nlmsg_seq = 1009839804
.nlmsg_pid = 1980
[PAYLOAD] 16 octets
00 00 00 00 04 00 00 00 03 10 00 00 00 00 00 00 ................
[ATTR 26] 0 octets
--------------------------- END NETLINK MESSAGE ---------------------------
-- Debug: Received Message:
-------------------------- BEGIN NETLINK MESSAGE ---------------------------
[HEADER] 16 octets
.nlmsg_len = 56
.nlmsg_type = 2 <ERROR>
.nlmsg_flags = 0 <>
.nlmsg_seq = 1009839804
.nlmsg_pid = 1980
[ERRORMSG] 20 octets
.error = -22 "Invalid argument"
[ORIGINAL MESSAGE] 16 octets
.nlmsg_len = 16
.nlmsg_type = 19 <0x13>
.nlmsg_flags = 5 <REQUEST,ACK>
.nlmsg_seq = 1009839804
.nlmsg_pid = 1980
--------------------------- END NETLINK MESSAGE ---------------------------
-- Error received: Invalid argument
-- Original message: type=0x13 length=36 flags=<REQUEST,ACK> sequence-nr=1009839804 pid=1980
-------------- next part --------------
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