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

[Ramon C. <cas...@in...>]

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