kern/121955: [ipfw] [panic] freebsd 7.0 panic with mpd

[Alexander Shulikov]

Interesting changelog in cvs:

Revision 1.114: download - view: text, markup, annotated - select for diffs
Tue Dec 25 09:36:51 2007 UTC (2 months, 4 weeks ago) by oleg
Branches: MAIN
Diff to: previous 1.113: preferred, colored
Changes since revision 1.113: +22 -7 lines

Workaround p->numbytes overflow, which can result in infinite loop inside
dummynet module (prerequisite is using queues with "fat" pipe).

PR:		kern/113548


2008/3/24, Alexander Shulikov <shulikov at gmail.com>:
> In real script I have in and out. But some ip's for the same speed I
>  add in table, and then do:
>  # 512/128
>  ${fwcmd} pipe 357 config bw 128Kbit/s queue 100 mask src-ip 0xffffffff
>  ${fwcmd} pipe 358 config bw 512Kbit/s queue 100 mask dst-ip 0xffffffff
>  ${fwcmd} add pipe 357 ip from "table(3)" to any in
>  ${fwcmd} add pipe 358 ip from any to "table(3)" out
>
>  IPs for individual speed added as in example in previous letter, but
>  with in/out.
>
>  But what can I do for resolve this problem. Now I have server with
>  FreeBSD 6.2 and copy of this configs - and all works fine. o_O
>
>
>  2008/3/24, AT Matik <asstec at matik.com.br>:
>  > On Monday 24 March 2008 11:51:44 Alexander Shulikov wrote:
>  >  > # sysctl -a | grep one_pass
>  >  > net.inet.ip.fw.one_pass: 0
>  >  >
>  >  > Yes - it eq 0. But I need it for next situation: all net I need shape
>  >  > at one speed, but invididual ip addresses to another speed.
>  >  > For example,
>  >  > ipfw pipe 1 config bw 10Mbit/s queue 100
>  >  > ipfw pipe 2 config bw 10Mbit/s queue 100
>  >  > ipfw add pipe 1 ip from 192.168.1.0/24 to any
>  >  > ipfw add pipe 2 ip from any to 192.168.1.0/24
>  >  > ipfw pipe 3 config bw 1Mbit/s queue 100
>  >  > ipfw pipe 4 config bw 1Mbit/s queue 100
>  >  > ipfw add pipe 3 ip from 192.168.1.1/32 to any
>  >  > ipfw add pipe 4 ip from any to 192.168.1.1/32
>  >
>  >
>  >
>  >
>  > that should work, I have similar setups running fine
>  >  the /32 mask you should not need but I am missing the in/out definition in
>  >  your rules
>  >
>  >
>  >
>  >
>  >
>  >  > ......
>  >  >
>  >  >
>  >  > Also this configuration work in FreeBSD 6.2. (May be in 6.2 smaller call
>  >  > tree?)
>  >  >
>  >  > 2008/3/24, AT Matik <asstec at matik.com.br>:
>  >  > > On Monday 24 March 2008 08:08:02 Andrey V. Elsukov wrote:
>  >  > >  > AT Matik wrote:
>  >  > >  > > what do you mean? By setting to 0 the packages are not re-injected
>  >  > >  > > into the pipe but go through other existing rules after the matching
>  >  > >  > > pipe, or not?
>  >  > >  >
>  >  > >  > When you reset net.inet.ip.fw.one_pass to zero, packets return back
>  >  > >  > into ipfw to the next rule after dummynet/netgraph. And if you have
>  >  > >  > similar rules packets will be passed into dummynet/netgraph again.
>  >  > >  >
>  >  > >  > This is example how to get double fault (from mail archive):
>  >  > >
>  >  > > jaaa well but that is the famous bw 0 example which is not valid, as by
>  >  > > itself certainly an invalid config, not connected to the existing problem
>  >  > > the reporter has I guess
>  >  > >
>  >  > >  João
>  >  > >
>  >  > >  > ifconfig em0 192.168.0.2/24
>  >  > >  > kldload ipfw
>  >  > >  > kldload dummynet
>  >  > >  > sysctl net.inet.ip.fw.one_pass=0
>  >  > >  > ipfw pipe 2 config bw 0
>  >  > >  > ipfw add 2 pipe 2 ip from any to any
>  >  > >  > ipfw add 2 pipe 2 ip from any to any
>  >  > >  > ipfw add 2 pipe 2 ip from any to any
>  >  > >  > ipfw add 2 pipe 2 ip from any to any
>  >  > >  > ipfw add 2 pipe 2 ip from any to any
>  >  > >  > ipfw add 2 pipe 2 ip from any to any
>  >  > >  > ipfw add 2 pipe 2 ip from any to any
>  >  > >  > ipfw add 2 pipe 2 ip from any to any
>  >  > >  > ipfw add 2 pipe 2 ip from any to any
>  >  > >  > ipfw add 2 pipe 2 ip from any to any
>  >  > >  > ipfw add 2 pipe 2 ip from any to any
>  >  > >  > ipfw add 2 pipe 2 ip from any to any
>  >  > >  > ipfw add 2 pipe 2 ip from any to any
>  >  > >  > ipfw add 2 pipe 2 ip from any to any
>  >  > >  > ipfw add 2 pipe 2 ip from any to any
>  >  > >  > ipfw add 2 pipe 2 ip from any to any
>  >  > >  > ipfw add 2 pipe 2 ip from any to any
>  >  > >  > ping 192.168.0.1
>  >  > >
>  >  > >  --
>  >  > >
>  >  > >
>  >  > > Atenciosamente, J.M.
>  >  > >  Responsável Plantão Site Support Matik
>  >  > >  Infomatik Internet Technology
>  >  > >  (18)3551.8155  (18)8112.7007
>  >  > >  http://info.matik.com.br
>  >  > >
>  >  > >
>  >  > >
>  >  > >
>  >  > >
>  >  > >
>  >  > >
>  >  > >  A mensagem foi scaneada pelo sistema de e-mail e pode ser considerada
>  >  > > segura. Service fornecido pelo Datacenter Matik
>  >  > > https://datacenter.matik.com.br
>  >
>  >
>  > --
>  >
>  >
>  >  Atenciosamente, J.M.
>  >  Responsável Plantão Site Support Matik
>  >  Infomatik Internet Technology
>  >  (18)3551.8155  (18)8112.7007
>  >  http://info.matik.com.br
>  >
>  >
>  >
>  >
>  >
>  >
>  >
>  >  A mensagem foi scaneada pelo sistema de e-mail e pode ser considerada segura.
>  >  Service fornecido pelo Datacenter Matik  https://datacenter.matik.com.br
>  >
>