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From: Eric Dumazet <eric.dumazet@gmail.com>
To: Thorsten Glaser <t.glaser@tarent.de>
Cc: Dave Taht <dave.taht@gmail.com>, netdev@vger.kernel.org
Subject: Re: RFH, where did I go wrong?
Date: Wed, 12 Oct 2022 14:08:34 -0700	[thread overview]
Message-ID: <ee967071-abbe-c0e3-db96-6963d1b886b2@gmail.com> (raw)
In-Reply-To: <d6645cac-3dd3-432-3ae1-178347761b6e@tarent.de>


On 10/12/22 14:05, Thorsten Glaser wrote:
> On Wed, 12 Oct 2022, Eric Dumazet wrote:
>
>> I guess RTNL is not held at this point.
> OIC, so it’s held for .init and .reset but not the other methods.
> I wish this were documented…


RTNL being a mutex it only can be acquired in process context.

qdisc fast path (queue/dequeue) can be called from (soft)irq context, so 
RTNL is out of reach.


>
> Looking good so far. Thank you very much!
>
> bye,
> //mirabilos

      reply	other threads:[~2022-10-12 21:08 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <FR2P281MB2959684780DC911876D2465590419@FR2P281MB2959.DEUP281.PROD.OUTLOOK.COM>
     [not found] ` <FR2P281MB2959EBC7E6CE9A1A8D01A01F90419@FR2P281MB2959.DEUP281.PROD.OUTLOOK.COM>
2022-09-08 21:01   ` RFH, where did I go wrong? Thorsten Glaser
2022-09-10 23:38     ` Sergey Ryazanov
2022-09-10 23:43       ` Thorsten Glaser
2022-09-13  6:39         ` AW: " Haye.Haehne
2022-09-13 18:37           ` Thorsten Glaser
     [not found]             ` <FR2P281MB2959289F36EFC955105DD1DF90469@FR2P281MB2959.DEUP281.PROD.OUTLOOK.COM>
     [not found]               ` <bd8c8a7f-8a8e-3992-d631-d2f74d38483@tarent.de>
     [not found]                 ` <FR2P281MB2959185CA486AB5A5868C4D490529@FR2P281MB2959.DEUP281.PROD.OUTLOOK.COM>
     [not found]                   ` <1b62f51-a017-e21-31f3-2ccd72b6c8ad@tarent.de>
     [not found]                     ` <FR2P281MB29596B8EA9AC8940C5A95B7690559@FR2P281MB2959.DEUP281.PROD.OUTLOOK.COM>
2022-10-05 18:47                       ` Thorsten Glaser
2022-10-11 18:08                         ` Thorsten Glaser
     [not found]     ` <CAA93jw5J5XzhKb_L0C5uw1e3yz_4ithUnWO6nAmeeAEn7jyYiQ@mail.gmail.com>
     [not found]       ` <1a1214b6-fc29-1e11-ec21-682684188513@tarent.de>
     [not found]         ` <CAA93jw6ReJPD=5oQ8mvcDCMNV8px8pB4UBjq=PDJvfE=kwxCRg@mail.gmail.com>
2022-10-11 20:35           ` Thorsten Glaser
2022-10-11 20:38             ` Thorsten Glaser
2022-10-12 20:17             ` Thorsten Glaser
2022-10-12 20:41               ` Eric Dumazet
2022-10-12 20:48                 ` Thorsten Glaser
2022-10-12 21:40                   ` Andrew Lunn
2022-10-12 21:56                     ` Thorsten Glaser
2022-10-13  7:38                       ` Vladimir Oltean
2022-10-13 13:19                       ` Andrew Lunn
2022-10-12 21:05                 ` Thorsten Glaser
2022-10-12 21:08                   ` Eric Dumazet [this message]

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