Thank you so much for ur response Stephen, Ya, I found that dlopen tries to load q_htb.so.. and it fails.. I tried to locate q_htb.so in my rh9 machiene.. but i couldnt locate it.. Could you let me know how build q_htb.so standalone ?? Thanks in advance, With best regards, Sanjeev Ravindran ----- Original Message ----- From: "Stephen Hemminger" <shemminger@xxxxxxxx> To: "sanjeev ravindran" <sanjeev_ravindran@xxxxxxxxxxxxx> Subject: Re: Issue with using using tc api Date: Wed, 2 Feb 2005 13:28:53 -0800 > > On Thu, 03 Feb 2005 00:42:52 +0800 > "sanjeev ravindran" <sanjeev_ravindran@xxxxxxxxxxxxx> wrote: > > > Hi , > > > > I'm trying to call the tc_qdisc_modify function of tc in > > iproute2/tc. I could compile it with my stub program and got the > > executable. However, when i try to create an htb qdisc i get the > > following error : Unknown qdisc "htb", hence option "default" is > > unparsable > > > > However, if i use the tc tool, it works fine.. When I tried to > > understand the problem, it appeared to be failing of dlopen to > > load the module.. But when i use tc tool, it loads this module.. > > Tc command is hard to understand because it supports using dynamic > libraries to add new queue disciplines. > To find a queue discipline it first looks for q_XXX.so then opens > it's own text with dlopen() and finds the > necessary table hooks. This kind of dynamic binding is uncommon in > C code, but allows for extensibility. > > Normally tc has most queue discipline support (ie q_htb) linked > into the command directly, but > you could build q_htb.so standalone as well. -- ______________________________________________ Check out the latest SMS services @ http://www.linuxmail.org This allows you to send and receive SMS through your mailbox. Powered by Outblaze _______________________________________________ LARTC mailing list / LARTC@xxxxxxxxxxxxxxx http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://lartc.org/
