Re: [mpls-linux-general] Multiple pushes again
Status: Beta
Brought to you by:
jleu
Menu
▾
▴
Re: [mpls-linux-general] Multiple pushes again
|
From: Radu D. <dr...@ee...> - 2002-02-27 13:23:17
|
Hi all ,
I'm back.
Before the output result from mplsadm2 -d, I want to emphasize something
else:
In UML, after:
# ./mplsadm2 -v -A -I gen:17:0 -i pop:peek
I received:
In label input: gen:17:0
In instr input: pop:peek
Label type: gen
In Label add: Success
Instruction: pop
Instruction: peek
Length: 2
In Instr: No such device or address
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
What is this error and can it be the source of my kernel panic???
Here is the output from mplsadm2 -d while running the following
instructions in UML:
./mplsadm2 -v -A -I gen:17:0 -i pop:peek
./mplsadm2 -v -A -I gen:16:0
Feb 27 08:06:28 bruml kernel: mpls_add_in_label: enter
Feb 27 08:06:28 bruml kernel: mpls_in_info_hold: enter
Feb 27 08:06:28 bruml kernel: mpls_in_info_hold: new count 1
Feb 27 08:06:28 bruml kernel: mpls_in_info_hold: exit
Feb 27 08:06:28 bruml kernel: mpls_info_default_in_instruction: enter
Feb 27 08:06:28 bruml kernel: mpls_instruction_build: enter
Feb 27 08:06:28 bruml kernel: length: 2
Feb 27 08:06:28 bruml kernel: mpls_instruction_build: exit(2)
Feb 27 08:06:28 bruml kernel: mpls_instruction_clear: enter
Feb 27 08:06:28 bruml kernel: mpls_instruction_clear: exit
Feb 27 08:06:28 bruml kernel: mpls_info_default_in_instruction: exit
Feb 27 08:06:28 bruml kernel: mpls_add_in_label: exit
Feb 27 08:06:28 bruml kernel: mpls_set_in_label_instructions: enter
Feb 27 08:06:28 bruml kernel: mpls_in_info_hold: enter
Feb 27 08:06:28 bruml kernel: mpls_in_info_hold: new count 2
Feb 27 08:06:28 bruml kernel: mpls_in_info_hold: exit
Feb 27 08:06:28 bruml kernel: mpls_instruction_build: enter
Feb 27 08:06:28 bruml kernel: length: 2
Feb 27 08:06:28 bruml kernel: mpls_instruction_build: exit(2)
Feb 27 08:06:28 bruml kernel: mpls_instruction_clear: enter
Feb 27 08:06:28 bruml kernel: mpls_instruction_clear: exit
Feb 27 08:06:28 bruml kernel: mpls_in_info_release: enter
Feb 27 08:06:28 bruml kernel: mpls_in_info_release: new count 1
Feb 27 08:06:28 bruml kernel: mpls_in_info_release: exit
Feb 27 08:06:28 bruml kernel: mpls_set_in_label_instructions: exit
Feb 27 08:06:55 bruml kernel: mpls_add_in_label: enter
Feb 27 08:06:55 bruml kernel: mpls_in_info_hold: enter
Feb 27 08:06:55 bruml kernel: mpls_in_info_hold: new count 1
Feb 27 08:06:55 bruml kernel: mpls_in_info_hold: exit
Feb 27 08:06:55 bruml kernel: mpls_info_default_in_instruction: enter
Feb 27 08:06:55 bruml kernel: mpls_instruction_build: enter
Feb 27 08:06:55 bruml kernel: length: 2
Feb 27 08:06:55 bruml kernel: mpls_instruction_build: exit(2)
Feb 27 08:06:55 bruml kernel: mpls_instruction_clear: enter
Feb 27 08:06:55 bruml kernel: mpls_instruction_clear: exit
Feb 27 08:06:55 bruml kernel: mpls_info_default_in_instruction: exit
Feb 27 08:06:55 bruml kernel: mpls_add_in_label: exit
On Tue, 26 Feb 2002, James R. Leu wrote:
> Hello,
>
> Turn on MPLS kernel debugging in the UML (mplsadm2 -d), duplicate, then
> sent me the output.
>
> Jim
>
>
> On Mon, Feb 25, 2002 at 12:15:58PM +0000, Radu Dragos wrote:
> > Hi all.
> > I'm trying to push 2 labels into the MPLS stack.
> >
> > Begin (Scenario):
> > linux-2.4.17
> > mpls-linux-1.128
> >
> > ------ _____
> > |Host|---------------------------UML1|
> > ------ -----
> > tap0 eth0
> > 192.168.100.1 192.168.100.2
> >
> >
> > On host:
> > #./mplsadm2 -v -A -O gen:16:tap0:ipv4:192.168.100.2
> > #./mplsadm2 -v -O key:0x3 -o
> > push:gen:16:push:gen:17:set:tap0:ipv4:192.168.100.2
> > #iptables -A OUTPUT -d 192.168.100.2 -j MPLS --set-key 0x3
> > #./mplsadm -L tap0:0
> >
> > #watch cat /proc/net/mpls*
> > lo 0 109
> > tap0 0 7
> > 0x00000003 4/336/0 1 PUSH(gen 16) PUSH(gen 17) SET(tap0,192.168.100.2)
> >
> > ############################################################
> > On UML1:
> > ./mplsadm2 -A -I gen:17:0 -i pop:peek
> > ./mplsadm2 -A -I gen:16:0
> > ./mplsadm -L eth0:0
> >
> > #watch cat /proc/net/mpls*
> > 0x40004000 0/0/0 gen 16 0 1 POP PEEK
> > 0x40004400 0/0/0 gen 17 0 1 POP PEEK
> > lo 0 5
> > tap0 0 1
> > eth0 0 5
> >
> > End(Scenario)
> >
> > On host:
> > ping 192.168.100.2
> > PING 192.168.100.2 (192.168.100.2) from 192.168.100.1 : 56(84) bytes of
> > data.
> > 64 bytes from 192.168.100.2: icmp_seq=0 ttl=255 time=3.916 msec
> > The host received only 1 replay.
> >
> > On UML1:
> > Kernel panic.
> >
> > bt from gdb:
> > #0 panic (fmt=0xa0140e2c "Segfault with no mm") at panic.c:52
> > #1 0xa00c67a1 in segv (address=276, ip=2685111923, is_write=0, is_user=0)
> > at trap_kern.c:42
> > #2 0xa00c7548 in segv_handler (sig=11, sc=0xa015f798, usermode=0)
> > at trap_user.c:370
> > #3 0xa00c76bf in sig_handler (sig=11, sc=
> > {gs = 0, __gsh = 0, fs = 0, __fsh = 0, es = 43, __esh = 0, ds = 43,
> > __dsh = 0, edi = 2720948257, esi = 2720948253, ebp = 2685794980, esp =
> > 2685794924, ebx = 2693715584, edx = 272, ecx = 2685794652, eax = 38,
> > trapno = 14, err = 4, eip = 2685111923, cs = 35, __csh = 0, eflags =
> > 66182, esp_at_signal = 2685794924, ss = 43, __ssh = 0, fpstate = 0x0,
> > oldmask = 0, cr2 = 276}) at trap_user.c:429
> > #4 <signal handler called>
> > #5 0xa00b8e73 in mpls_opcode_push (skb=0xa015fafc, ml=0x110,
> > mpr=0xa0973340)
> > at mpls_opcode.c:138
> > #6 0xa00b7e3c in mpls_input (skb=0xa08ed680, dev=0xa08f9800,
> > pt=0xa016a040,
> > label=0xa23c41e0, mpr=0xa0973340, labelspace=0) at mpls_input.c:190
> > #7 0xa00b8584 in mpls_rcv (skb=0xa08ed680, dev=0xa08f9800, pt=0xa016a040)
> > at mpls_input.c:515
> > #8 0xa0074f45 in net_rx_action (h=0xa017d350) at dev.c:1530
> > #9 0xa001238a in do_softirq () at softirq.c:90
> > #10 0xa00c3385 in do_IRQ (irq=4, user_mode=0) at irq.c:332
> > #11 0xa00c39af in sigio_handler (sig=29, sc=0xa015fc80, usermode=0)
> > at irq_user.c:62
> > ---Type <return> to continue, or q <return> to quit---
> > #12 0xa00c75de in irq_handler (sig=29, sc=
> > {gs = 0, __gsh = 0, fs = 0, __fsh = 0, es = 43, __esh = 0, ds = 43,
> > __dsh = 0, edi = 10, esi = 2685796348, ebp = 2685796208, esp = 2685796180,
> > ebx = 2685796200, edx = 8192, ecx = 2685796200, eax = 4294967292, trapno =
> > 1, err = 0, eip = 2685302417, cs = 35, __csh = 0, eflags = 646,
> > esp_at_signal = 2685796180, ss = 43, __ssh = 0, fpstate = 0xa015fcd8,
> > oldmask = 0, cr2 = 0}) at trap_user.c:405
> > #13 <signal handler called>
> > #14 0xa00e7691 in __libc_nanosleep ()
> > #15 0xa00c60dd in idle_sleep (secs=10) at time.c:108
> > #16 0xa00c92a0 in do_idle () at process_kern.c:418
> > #17 0xa00c934d in cpu_idle () at process_kern.c:445
> > #18 0xa00036f1 in start_kernel () at init/main.c:623
> > #19 0xa00c7acd in start_kernel_proc (unused=0x0) at um_arch.c:131
> > #20 0xa00c6fea in signal_tramp (arg=0xa00c7a98) at trap_user.c:84
> >
> >
> > Does anyone has an updated version of README.hierarchy
> > or an working example with multiple pushes/pops ??
> >
> > Thanks in advance,
> > Radu.
> >
> >
> >
> >
> >
> >
> >
> > _______________________________________________
> > mpls-linux-general mailing list
> > mpl...@li...
> > https://lists.sourceforge.net/lists/listinfo/mpls-linux-general
>
> --
> James R. Leu
>
> _______________________________________________
> mpls-linux-general mailing list
> mpl...@li...
> https://lists.sourceforge.net/lists/listinfo/mpls-linux-general
>
|
