Traffic Shaping not working correctly after ipfw coverted to use pfil_hooks API

[Vincent Poy]

On Fri, 22 Oct 2004 00:18:47 +0200, Andre Oppermann <andre at freebsd.org> wrote:
> Vincent Poy wrote:
> > On Thu, 21 Oct 2004 15:24:41 +0200, Andre Oppermann <andre at freebsd.org> wrote:
> >
> >>Vincent Poy wrote:
> >>
> >>>However, after the latest -CURRENT upgrade, it will do 200KB/sec down
> >>>and 52KB/sec up.  If I only download only, then it does show
> >>>650KB/sec.  Normally, when I change the bandwidth to a number lower
> >>>than 480Kbps for the pipe, the download speeds would go up when
> >>>downloading.  However, I have tried in 10kbps steps down to 350kbps
> >>>but it still did not top 200KB/sec in downloading.
> >>
> >>Interesting.  I have just looked through the ipfw to pfil_hooks changes
> >>as they relate to dummynet.  The only change to dummynet is to remove a
> >>stored pointer to the rtentry.  This doesn't influence the shaping and
> >>limiting of dummynet in any way.  Other than that the way ipfw gets
> >>called has changed and thus how dummynet is invoked too.
> >>
> >>Can you verify that all dummynet queues and pipes are in use?  The only
> >>thing I can imagine is that somehow the dummynet info gets mangled and
> >>everything goes into the same queue/pipe.  Although that is unlikely.
> >
> >
> > Yeah, it's weird since I was trying to fine tune the bandwidth size of
> > the upstream pipe but noticed the download side was now only
> > delivering 1/3rd the speed it used to no matter what I set the
> > upstream side to since I'm only using ipfw/dummynet on the upstream
> > side as the downstream packets go directly from my ISP to the other
> > machines on the /29.  How do I verify all dummynet queues and pipes
> > are in use though?   this is the output from ipfw show:
> 
>  ipfw pipe show
>  ipfw queue show
> 
> will do the trick.

Here's the output...

root at bigbang [3:35pm][/home/vince] >> ipfw pipe show
00001: 480.000 Kbit/s    0 ms   50 sl. 0 queues (1 buckets) droptail
    mask: 0x00 0x00000000/0x0000 -> 0x00000000/0x0000
q00001: weight 100 pipe 1   50 sl. 1 queues (1 buckets) droptail
    mask: 0x00 0x00000000/0x0000 -> 0x00000000/0x0000
BKT Prot ___Source IP/port____ ____Dest. IP/port____ Tot_pkt/bytes Pkt/Byte Drp
  0 tcp  208.201.244.225/3254    64.12.185.119/80    2298723
1664167302  0    0 6116
q00002: weight 66 pipe 1   50 sl. 1 queues (1 buckets) droptail
    mask: 0x00 0x00000000/0x0000 -> 0x00000000/0x0000
BKT Prot ___Source IP/port____ ____Dest. IP/port____ Tot_pkt/bytes Pkt/Byte Drp
  0 udp  208.201.244.225/2979     217.12.4.104/53    346608 32488287  0    0   0
q00003: weight 33 pipe 1   50 sl. 1 queues (1 buckets) droptail
    mask: 0x00 0x00000000/0x0000 -> 0x00000000/0x0000
BKT Prot ___Source IP/port____ ____Dest. IP/port____ Tot_pkt/bytes Pkt/Byte Drp
  0 tcp  208.201.244.225/3254    64.12.185.119/80    36965 11308730  0    0  60
q00004: weight 1 pipe 1   50 sl. 1 queues (1 buckets) droptail
    mask: 0x00 0x00000000/0x0000 -> 0x00000000/0x0000
BKT Prot ___Source IP/port____ ____Dest. IP/port____ Tot_pkt/bytes Pkt/Byte Drp
  0 tcp  208.201.244.226/3746  216.155.193.173/5050  10058  3530197  0    0   0
root at bigbang [3:37pm][/home/vince] >> ipfw queue show
q00001: weight 100 pipe 1   50 sl. 1 queues (1 buckets) droptail
    mask: 0x00 0x00000000/0x0000 -> 0x00000000/0x0000
BKT Prot ___Source IP/port____ ____Dest. IP/port____ Tot_pkt/bytes Pkt/Byte Drp
  0 tcp  208.201.244.225/3254    64.12.185.119/80    2298737
1664167862  0    0 6116
q00002: weight 66 pipe 1   50 sl. 1 queues (1 buckets) droptail
    mask: 0x00 0x00000000/0x0000 -> 0x00000000/0x0000
BKT Prot ___Source IP/port____ ____Dest. IP/port____ Tot_pkt/bytes Pkt/Byte Drp
  0 udp  208.201.244.225/2979     217.12.4.104/53    346608 32488287  0    0   0
q00003: weight 33 pipe 1   50 sl. 1 queues (1 buckets) droptail
    mask: 0x00 0x00000000/0x0000 -> 0x00000000/0x0000
BKT Prot ___Source IP/port____ ____Dest. IP/port____ Tot_pkt/bytes Pkt/Byte Drp
  0 tcp  208.201.244.225/3254    64.12.185.119/80    36965 11308730  0    0  60
q00004: weight 1 pipe 1   50 sl. 1 queues (1 buckets) droptail
    mask: 0x00 0x00000000/0x0000 -> 0x00000000/0x0000
BKT Prot ___Source IP/port____ ____Dest. IP/port____ Tot_pkt/bytes Pkt/Byte Drp
  0 tcp  208.201.244.226/3746  216.155.193.173/5050  10058  3530197  0    0   0
root at bigbang [3:37pm][/home/vince] >> 

Cheers,
Vince