Re: tc not taking stdin as input for creaing tc rules

On Tue, Aug 22, 2017 at 09:59:30PM +0530, Akshat Kakkar wrote:
> On Tuesday, August 22, 2017, Phil Sutter <[email protected]> wrote:
> 
> > On Tue, Aug 22, 2017 at 03:01:10PM +0530, Akshat Kakkar wrote:
> > > Following command is not executing. It gives tc help output in reply.
> > >
> > > printf "class del dev eno2 parent 1: classid 1:1
> > > class del dev eno2 parent 1: classid 1:2
> > > class del dev eno2 parent 1: classid 1:3
> > > class del dev eno2 parent 1: classid 1:4
> > > class del dev eno2 parent 1: classid 1:5
> > > class del dev eno2 parent 1: classid 1:6
> > > class del dev eno2 parent 1: classid 1:7
> > > class add dev eno2 parent 1:  classid 1:1 htb rate 100000000bit burst
> > > 10M ceil 100000000bit prio 1
> > > class add dev eno2 parent 1:  classid 1:2 htb rate 100000000bit burst
> > > 10M ceil 100000000bit prio 1
> > > class add dev eno2 parent 1:  classid 1:3 htb rate 100000000bit burst
> > > 10M ceil 100000000bit prio 1
> > > class add dev eno2 parent 1:  classid 1:4 htb rate 100000000bit burst
> > > 10M ceil 100000000bit prio 1
> > > class add dev eno2 parent 1:  classid 1:5 htb rate 100000000bit burst
> > > 10M ceil 100000000bit prio 1
> > > class add dev eno2 parent 1:  classid 1:6 htb rate 100000000bit burst
> > > 10M ceil 100000000bit prio 1
> > > class add dev eno2 parent 1:  classid 1:7 htb rate 100000000bit burst
> > > 10M ceil 100000000bit prio 1
> > > " | /usr/sbin/tc -force -b
> >
> > Option -b requires a parameter (batch file containing commands). Use '-'
> > to make tc read stdin.
> >
> > Cheers, Phil
> >
> 
> I found a patch of August, 2000 stating the same. However, what's strange
> is it was working like this for kernel 3.10 and also man page doesn't state
> about that extra hiphen .

Stephen Hemminger broke compatibility in commit a3aa47a559f3f ("Make tc
and ip batch mode consistent"). Obviously he forgot to update the man
page which still states that '-b' or '-batch' without filename parameter
were allowed.

Would you care to fix the docs and send a patch?

Cheers, Phil