[mpls-linux-devel] Re: [ANNOUNCE] Experimental (developers only) linux-2.6.0-test11-mpls-1.179-rcas1.diff

[jamal <ha...@cy...>]

Hi Ramon,
I guess this is the first email on that list? I am not even sure if i am
on it or not. I sent a design description to James last week and was
hoping to receive some feedback. Are you guys discussing in the
background? I havent seen anything back. 

cheers,
jamal

On Sun, 2003-11-30 at 10:36, Ramon Casellas wrote:
> Hi James/Jamal/Harald/all,
> 
> Well, yet another experimental release.
> 
> BIG FAT WARNING:
> =====================
> 
> The kernel compiles and boots. proc entries are created and show the mpls
> subsystem status, tunnels can be created, and netlink "link layer" is set
> up ,but the user plane (forwarding) implementation does not work (most
> notably, it is impossible to add MOIs, given the latest changes in
> dst/neigh/etc.). Although ioctls are enabled for debug purposes,
> work is in progress to port to netlink (we need to define the MPLS
> kernel-userspace protocol, but a first step would be to re-use the
> existing ioctl data structures).
> 
> I have (non-officially!) #define'd MPLS_NETLINK 9. Maybe the big guys from
> netdev@ can allocate a number for us :)
> 
> 
> Regards,
> Ramon
> 
> // -------------------------------------------------------------------
> // Ramon Casellas - GET/ENST/INFRES/RHD/A508 - cas...@in...
> 
> 
> PS:
> * Further discussion on mpls-linux-devel only. Sorry if you received
> several copies of this email.
> 
> 
> Releases:
> =====================
> I am not proj. admin, and I cannot perform file release operations, so in
> order not to fill up your inboxes, releases can be found in:
> 
> * Latest diff (2.6.0-test11  -> 2.6.0-test11-mpls)
> 
> http://perso.enst.fr/~casellas/mpls-linux/linux-2.6.0-test11-mpls-1.179-rcas1.diff
> 
> 
> * I have started porting mplsadm -> mplsnl to use netlink.
> 
> http://perso.enst.fr/~casellas/mpls-linux/mplsnl-0.1.tar.gz
> 
> 
> 
> Overview:
> =====================
> 	- I ***'up yesterday's diff (again, I know!, I know, bear with
>           me, I'm a little braind..)  missing define
> 
> 	- Fixed a bug that I introduced in mpls labelspace handling.
> 
> 	- Added basic infrastructure for MPLS netlink. Userspace apps can
> 	  communicate with MPLS subsystem. The "link layer" is set up. We need
> 	  to define a Userspace <-> Kernel Protocol (we can start porting the
> 	  ioctl mechanism to netlink). cf the userspace mplsnl app. for
> 	  details. Tested
> 
> 
> Changes w.r.t yesterday's release: (cf. yesterday's mail for details)
> ====================================================================
> 
> 	* linux-2.6.0-test11-mpls/net/mpls/mpls_netlink.c
> 	  - Added file
> 	  - Modified net/mpls/mpls.h (add prototypes).
> 
> 
> 	* linux-2.6.0-test11-mpls/include/linux/mpls.h
> 	  - Added #define mir_set_tc     mir_data.set_tc which was missing in
> 	  previous diff
> 
> 	* linux-2.6.0-test11/include/linux/netlink.h
> 	  - Allocated a new Netlink for MPLS (non official!)
> 		#ifdef CONFIG_MPLS
> 		#define NETLINK_MPLS		9
> 		#endif
> 
> 	* linux-2.6.0-test11/net/netlink/netlink_dev.c	2003-11-27
> 	+ 	{
> 			.name	= "mpls",
> 			.minor	= NETLINK_MPLS,
> 		},
> 
> 		...
> 
> Some tests:
> =====================
> ------------------------------------------
> gandalf mplsadm# dmesg | grep MPLS
> MPLS Support v1.0 James R. Leu <jl...@mi...> -- Ramon Casellas <cas...@in...>
> MPLS Initializing Input Radix Tree
> MPLS Initializing Output Radix Tree
> MPLS Initializing MPLS ProcFS Interface
> MPLS  MultiProtocol Label Switching Tunnel Module
> MPLS  (c)  1999-2003 JLeu -- (c) 2003 RCas
> MPLS version 1.179 2003/11/20
> MPLS DEBUG net/mpls/mpls_ioctls.c:38:mpls_ioctl: IOCTL 35844
> MPLS DEBUG net/mpls/mpls_ioctls.c:93:mpls_ioctl: IOCTL Add Tunnel
> MPLS DEBUG net/mpls/mpls_tunnel.c:366:mpls_tunnel_create: Allocated MPLS tunnel mpls0
> MPLS DEBUG net/mpls/mpls_ioctls.c:38:mpls_ioctl: IOCTL 35842
> MPLS DEBUG net/mpls/mpls_ioctls.c:55:mpls_ioctl: IOCTL Set LabelSpace
> 
> ------------------------------------------
> gandalf mplsadm# cat /proc/net/mpls/*
> Debug: 1
> Label spaces
> ---------------
> ath0    5      3
> mpls0   -1      2
> 
> mpls0   0x00000000
> 01010709
> 
> 
> ------------------------------------------
> gandalf mplsadm# cat /sys/class/net/mpls0/*
> 4
> 00:00:00:00
> 00:00:00:00
> 0x0
> 0x90
> 6
> 6
> 1500
> cat: /sys/class/net/mpls0/statistics: Is a directory
> 0
> 899
> 
> 
> ------------------------------------------
> netlink
> gandalf mplsnl# ./mplsnl
> MPLSNETLINK mplsnl.h:284:open: Socket descriptor 3
> MPLSNETLINK mplsnl.h:285:open: Local Addr 11857 (len 12)
> MPLSNETLINK mplsnl.h:286:open: Peer  Addr 0 (len 12)
> MPLSNETLINK mplsnl.h:315:send_msg: SizeOf nlmsg_len 24 (24)
> MPLSNETLINK answers: Invalid argument
> 
> 
> dmesg
> MPLS DEBUG net/mpls/mpls_netlink.c:204:mpls_netlink_rcv: Enter
> MPLS DEBUG net/mpls/mpls_netlink.c:137:mpls_netlink_rcv_msg: Received netlink request 1 of len 24 from pid 11854
> MPLS DEBUG net/mpls/mpls_netlink.c:226:mpls_netlink_rcv: Exit
> 
> 
> 
> 
>