* how to figure out which device a given IFB is connected to @ 2014-09-15 14:37 Sebastian Moeller 2014-09-15 16:08 ` Cong Wang 0 siblings, 1 reply; 5+ messages in thread From: Sebastian Moeller @ 2014-09-15 14:37 UTC (permalink / raw) To: netdev Hi All, I hope I am directing this to the correct mailing list, otherwise please excuse the distraction… I am trying to figure out a way to semi-automatically manage a set of IFB devices for a number of network interfaces. Currently I have no problem finding out if a given “real” interfaces is connected to an IFB: root@nacktmulle:~# tc -s filter show parent ffff: dev ge00 filter protocol all pref 10 u32 filter protocol all pref 10 u32 fh 800: ht divisor 1 filter protocol all pref 10 u32 fh 800::800 order 2048 key ht 800 bkt 0 flowid 1:1 match 00000000/00000000 at 0 action order 1: mirred (Egress Redirect to device ifb1) stolen index 47 ref 1 bind 1 installed 521 sec used 3 sec I am looking for a way of doing the reverse,i.e. figuring out for a given IFB if it is “connected” to a real interface and, if yes, which interface. Basically, I want to recycle unused IFBs, but want to make sure that they really are unused… Thanks in advance Sebastian Moeller ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: how to figure out which device a given IFB is connected to 2014-09-15 14:37 how to figure out which device a given IFB is connected to Sebastian Moeller @ 2014-09-15 16:08 ` Cong Wang 2014-09-15 19:06 ` Sebastian Moeller 0 siblings, 1 reply; 5+ messages in thread From: Cong Wang @ 2014-09-15 16:08 UTC (permalink / raw) To: Sebastian Moeller; +Cc: netdev On Mon, Sep 15, 2014 at 7:37 AM, Sebastian Moeller <moeller0@gmx.de> wrote: > I am looking for a way of doing the reverse,i.e. figuring out for a given IFB if it is “connected” to a real interface and, if yes, which interface. Basically, I want to recycle unused IFBs, but want to make sure that they really are unused… > There is no way to figure that out. ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: how to figure out which device a given IFB is connected to 2014-09-15 16:08 ` Cong Wang @ 2014-09-15 19:06 ` Sebastian Moeller 2014-09-15 20:55 ` Stephen Hemminger 0 siblings, 1 reply; 5+ messages in thread From: Sebastian Moeller @ 2014-09-15 19:06 UTC (permalink / raw) To: Cong Wang; +Cc: netdev Hi Mr. Wang, Thank you for your help. On Sep 15, 2014, at 18:08 , Cong Wang <cwang@twopensource.com> wrote: > On Mon, Sep 15, 2014 at 7:37 AM, Sebastian Moeller <moeller0@gmx.de> wrote: >> I am looking for a way of doing the reverse,i.e. figuring out for a given IFB if it is “connected” to a real interface and, if yes, which interface. Basically, I want to recycle unused IFBs, but want to make sure that they really are unused… >> > > There is no way to figure that out. That is rather unfortunate, so my only recourse is to get a list of all interfaces and query each whether it is attached to an fib and prune a list of IFBs so that only the unused ones remain (which is far from elegant ;) ). Best Regards Sebastian Moeller ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: how to figure out which device a given IFB is connected to 2014-09-15 19:06 ` Sebastian Moeller @ 2014-09-15 20:55 ` Stephen Hemminger 2014-09-15 21:24 ` Sebastian Moeller 0 siblings, 1 reply; 5+ messages in thread From: Stephen Hemminger @ 2014-09-15 20:55 UTC (permalink / raw) To: Sebastian Moeller; +Cc: Cong Wang, netdev On Mon, 15 Sep 2014 21:06:31 +0200 Sebastian Moeller <moeller0@gmx.de> wrote: > Hi Mr. Wang, > > Thank you for your help. > > On Sep 15, 2014, at 18:08 , Cong Wang <cwang@twopensource.com> wrote: > > > On Mon, Sep 15, 2014 at 7:37 AM, Sebastian Moeller <moeller0@gmx.de> wrote: > >> I am looking for a way of doing the reverse,i.e. figuring out for a given IFB if it is “connected” to a real interface and, if yes, which interface. Basically, I want to recycle unused IFBs, but want to make sure that they really are unused… > >> > > > > There is no way to figure that out. > > That is rather unfortunate, so my only recourse is to get a list of all interfaces and query each whether it is attached to an fib and prune a list of IFBs so that only the unused ones remain (which is far from elegant ;) ). It can be a many to one mapping. There are cases where you want multiple incoming devices to all be QoS'd together. ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: how to figure out which device a given IFB is connected to 2014-09-15 20:55 ` Stephen Hemminger @ 2014-09-15 21:24 ` Sebastian Moeller 0 siblings, 0 replies; 5+ messages in thread From: Sebastian Moeller @ 2014-09-15 21:24 UTC (permalink / raw) To: Stephen Hemminger; +Cc: Cong Wang, netdev Hello Mr. Hemminger, On Sep 15, 2014, at 22:55 , Stephen Hemminger <stephen@networkplumber.org> wrote: > On Mon, 15 Sep 2014 21:06:31 +0200 > Sebastian Moeller <moeller0@gmx.de> wrote: > >> Hi Mr. Wang, >> >> Thank you for your help. >> >> On Sep 15, 2014, at 18:08 , Cong Wang <cwang@twopensource.com> wrote: >> >>> On Mon, Sep 15, 2014 at 7:37 AM, Sebastian Moeller <moeller0@gmx.de> wrote: >>>> I am looking for a way of doing the reverse,i.e. figuring out for a given IFB if it is “connected” to a real interface and, if yes, which interface. Basically, I want to recycle unused IFBs, but want to make sure that they really are unused… >>>> >>> >>> There is no way to figure that out. >> >> That is rather unfortunate, so my only recourse is to get a list of all interfaces and query each whether it is attached to an fib and prune a list of IFBs so that only the unused ones remain (which is far from elegant ;) ). > > It can be a many to one mapping. > There are cases where you want multiple incoming devices to all be QoS'd together. Good to know, thanks for this information. Best Regards Sebastian Moeller ^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2014-09-15 21:24 UTC | newest] Thread overview: 5+ messages (download: mbox.gz follow: Atom feed -- links below jump to the message on this page -- 2014-09-15 14:37 how to figure out which device a given IFB is connected to Sebastian Moeller 2014-09-15 16:08 ` Cong Wang 2014-09-15 19:06 ` Sebastian Moeller 2014-09-15 20:55 ` Stephen Hemminger 2014-09-15 21:24 ` Sebastian Moeller
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