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Re: Deleting child qdisc doesn't reset parent to default qdisc?

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On Thu, 2016-04-14 at 16:44 +0200, Jiri Kosina wrote:
> Hi,
> 
> I've came across the behavior where adding a child qdisc and then deleting 
> it again makes the networking dysfunctional (I guess that's because all of 
> a sudden there is absolutely no working qdisc on the device, although 
> there originally was a default one in the parent).
> 
> In a nutshell, is this expected behavior or bug?

This is the expected behavior.

If the kernel was suddenly doing a 'replace' when you ask a delete,
then the scripts doing a delete , than a add would break.

tc users are skilled admins ;)

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Thread

Deleting child qdisc doesn't reset parent to default qdisc? Jiri Kosina <jikos@kernel.org> - 2016-04-14 16:50 +0200
  Re: Deleting child qdisc doesn't reset parent to default qdisc? Jiri Kosina <jikos@kernel.org> - 2016-04-14 17:00 +0200
  Re: Deleting child qdisc doesn't reset parent to default qdisc? Eric Dumazet <eric.dumazet@gmail.com> - 2016-04-14 17:10 +0200
    Re: Deleting child qdisc doesn't reset parent to default qdisc? Phil Sutter <phil@nwl.cc> - 2016-04-14 17:20 +0200
      Re: Deleting child qdisc doesn't reset parent to default qdisc? Jiri Kosina <jikos@kernel.org> - 2016-04-14 17:40 +0200
        Re: Deleting child qdisc doesn't reset parent to default qdisc? Eric Dumazet <eric.dumazet@gmail.com> - 2016-04-14 17:50 +0200
          Re: Deleting child qdisc doesn't reset parent to default qdisc? Phil Sutter <phil@nwl.cc> - 2016-04-14 18:30 +0200
            Re: Deleting child qdisc doesn't reset parent to default qdisc? Eric Dumazet <eric.dumazet@gmail.com> - 2016-04-14 18:50 +0200
      Re: Deleting child qdisc doesn't reset parent to default qdisc? Jiri Kosina <jikos@kernel.org> - 2016-04-14 18:10 +0200
        Re: Deleting child qdisc doesn't reset parent to default qdisc? Eric Dumazet <eric.dumazet@gmail.com> - 2016-04-14 19:50 +0200
          Re: Deleting child qdisc doesn't reset parent to default qdisc? Jamal Hadi Salim <jhs@mojatatu.com> - 2016-04-15 14:50 +0200
            Re: Deleting child qdisc doesn't reset parent to default qdisc? Eric Dumazet <eric.dumazet@gmail.com> - 2016-04-15 17:00 +0200

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