Re: Porting OpenBSD MPLS to FreeBSD

Reply: Andrey V. Elsukov: "Re: Porting OpenBSD MPLS to FreeBSD"
In reply to: Lev Serebryakov : "Re: Porting OpenBSD MPLS to FreeBSD"
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From: Lutz Donnerhacke <lutz_at_donnerhacke.de>
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.