[mpls-linux-general] question about /proc/net/.. files

[yu-xiao j. <yx...@ho...>]

Hi, James

I can see the mpls label with Ethereal when I setup the label in each 
router. But the questions is why the size of the files (/proc/net/mpls_in, 
mpls_out, mpls_fec...) is 0. when I open these files, nothing is there. I 
have choosen the support the proc file system.

Another questions : after I finished one experiment. I want to set up 
different label in the same router. So I need to delete the old label first, 
then setup the new label. My operation is:

mplsadm -v -A -B -O gen:16:eth0:ipv4:10.1.0.1 -f 10.2.1.10/32   (setup the 
label)

mplsadm -v -D -B -O gen:16:eth0:ipv4:10.1.0.1 -f 10.2.1.10/32   (delete the 
label)

each time I need to change the "-A" to "-D". Is there any easy way to delete 
the label. Or How can I make sure the label is deleted completely. Is it ok 
just delete the file (mpls_in...).

thanks in advance,


jenny Jia



>From: mpl...@li...
>Reply-To: mpl...@li...
>To: mpl...@li...
>Subject: mpls-linux-general digest, Vol 1 #59 - 1 msg
>Date: Thu, 03 May 2001 12:03:41 -0700
>
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>Today's Topics:
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>    1. question about skbuff (Yan, Xue Qiang (Rex))
>
>--__--__--
>
>Message: 1
>From: "Yan, Xue Qiang (Rex)" <re...@lu...>
>To: "'mpl...@li...'"
>	 <mpl...@li...>
>Date: Fri, 4 May 2001 01:14:02 +0800
>Subject: [mpls-linux-general] question about skbuff
>
>Hi James,
>I'm going to add some features into your mpls-linux code for our research
>use.
>I am confused with mpls_opcode_pop() and mpls_opcode_push().
>
>In mpls_opcode_pop()
>Why do you need to shift the skb->h.raw and skb->nh.raw? My understanding 
>is
>that all the L3/L4 headers remain in the same address, We do not need to
>shift skb->h.raw and skb->nh.raw
>====================from mpls_opcode.c=======
>...
>skb_pull(skb, sizeof(u32));
>skb->h.raw += sizeof(u32);
>skb->nh.raw += sizeof(u32);
>...
>==========================================
>in mpls_opcode_push()
>...
>/*if we have room between data and end of mac.raw*/
>skb->push(o,sizeof(u32));
>o->h.raw -= sizeof(u32);
>o->nh.raw -= sizeof(u32);
>...
>/*if we have tailroom, just move the data down...*/
>/* My understanding is YOU NEED TO ADJUST ALL TH POINTERS HERE IN THIS CASE
>*/
>....
>
>I'm new to linux kernel, maybe its a very stupid question.
>Thanks in advance.
>Rex
>
>
>
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>End of mpls-linux-general Digest

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