Re: Porting OpenBSD MPLS to FreeBSD

From: Lutz Donnerhacke <>
Date: Wed, 08 Dec 2021 18:01:23 UTC
On Wed, Dec 08, 2021 at 11:08:38AM +0300, Lev Serebryakov wrote:
> On 07.12.2021 17:28, Lutz Donnerhacke wrote:
>> I do use netgraph for carrier-grade stuff.
>> Yes, ng_bridge was limited, but this is fixed.
>  Doesn't it take separate lock for each packet passed though hook? I'm sure, it was true some time ago...

It's a read lock for each packet on each, which can be shared by CPUs.
I'm not aware that there are a major perfomace penalty, so I'd assume the
lock is lightweight.