Re: [mpls-linux-devel] Kernel 2.6.32.11 or better

[Chris R. <Chr...@nr...>]

Jorge

Testing today shows that the lock up problem still exist after applying 
the patch you sent out.  Unfortunately I can't give you a tcpdump from 
Host A cause the system locks up tight and requires a hard power reset.  
The OS I'm using is FC12 version 2.6.32.11-99.fc12.x86_64 modified with 
the Renato patch and your additional patch.  If you want some additional 
info I can re-run test but please provide specifics to how/what/where 
you need things done, remembering I'm not an expert in system level 
debugging but can parakeet command requires fairly good (:-) *sigh*.  
Maybe I show use a patch file created by you as a first step?  Can you 
send me something direct?

Data and config info:

Host A (eth1/10.50.1.1 - eth1:1/10.50.210.1)<---->Host B(eth1/10.50.1.2 
- eth1:1/10.50.110.1)

Host A MPLS manual configuration:
/sbin/mpls labelspace set dev eth1 labelspace 0
LSPKey=`/sbin/mpls nhlfe add key 0 instructions push gen 1000 nexthop 
eth1 ipv4 10.50.1.2 | grep key | cut -c 17-26`
/sbin/ip route add 10.50.110.0/24 via 10.50.1.2 mpls $LSPKey
/sbin/mpls ilm add label gen 2000 labelspace 0

ILM entry label gen 2000 labelspace 0 proto ipv4
     pop peek  (0 bytes, 0 pkts)

NHLFE entry key 0x00000002 mtu 1496 propagate_ttl
     push gen 1000 set eth1 ipv4 10.50.1.2  (0 bytes, 0 pkts)

LABELSPACE entry dev lo labelspace -1
LABELSPACE entry dev mpls0 labelspace -1
LABELSPACE entry dev eth0 labelspace -1
LABELSPACE entry dev eth1 labelspace 0


Host A interface config info
eth1      Link encap:Ethernet  HWaddr 00:05:1B:70:E9:37
           inet addr:10.50.1.1  Bcast:10.50.1.255  Mask:255.255.255.0
           inet6 addr: fe80::205:1bff:fe70:e937/64 Scope:Link
           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
           RX packets:1 errors:0 dropped:0 overruns:0 frame:0
           TX packets:48 errors:0 dropped:0 overruns:0 carrier:0
           collisions:0 txqueuelen:1000
           RX bytes:437 (437.0 b)  TX bytes:7040 (6.8 KiB)

eth1:1    Link encap:Ethernet  HWaddr 00:05:1B:70:E9:37
           inet addr:10.50.210.1  Bcast:10.50.210.255  Mask:255.255.255.0
           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1

Host A route info:
10.50.110.0/24 via 10.50.1.2 dev eth1 mpls 0x2



On 05/04/2010 08:10 AM, Jorge Boncompte [DTI2] wrote:
> El 04/05/2010 12:45, Chris Robson escribió:
>    
>> Renato
>>
>> Based on a quick check, the patches I came up with are almost (about
>> 75%) the same as yours.  But since they didnt match completely I
>> attempted to build a new FC12 rpm using your kernel and iproute
>> patches.  Unfortunately the system locks up on receipt of the 1st MPLS
>> packet just like a patched kernel using my patches.  I check if the
>> build disables the stack overflow and it turns out the flag
>> CONFIG_CC_STACKPROTECTOR in the file config-generic is not even present
>> which I "think" means it's not included in the compile by default.  So
>> there is something else wrong and as I said before, since the major
>> changes from 2.6.27 and 2.6.32 appears to be with the skbuff I suspect
>> something there is the problem.
>>
>> Also, there seems to be some interesting changes with MPLS inclusion
>> into the FC12 rpm build files.  I had to remove patches that add the
>> ipv4/Makefile changes because the mpls.o file inclusion is already
>> there.  This is just one example of some additions to the make scripts
>> which include MPLS but note the actual mpls code is not present, ergo a
>> bit confusing as to what is going on?
>>      
> 	Hi, could you test with the attached patch again? Or send me a decoded oops and
> some instructions to replicate your scenario!
>
>