Date: Sun, 16 Aug 2020 00:05:30 +0200 From: Niclas Zeising <zeising+freebsd@daemonic.se> To: net@freebsd.org, freebsd-net@freebsd.org Subject: Re: Add support for building Linux-only network drivers Message-ID: <7d5c55ab-bbf6-f8bc-954e-eb3739c13b4a@daemonic.se> In-Reply-To: <20200815215909.GA22866@mcp.nocebo.space> References: <20200724070128.GD21738@mcp.nocebo.space> <23f13fd1-e8eb-0a66-03cc-9caf26208e7b@daemonic.se> <20200815215909.GA22866@mcp.nocebo.space>
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On 2020-08-15 23:59, zerous wrote: > On Fri, Jul 24, 2020 at 07:42:32PM +0200, Niclas Zeising wrote: >> >> Hi! >> The Linux compatibility layer, aka Linuxolator, is for running userland >> Linux binaries on FreeBSD. I think what you're looking for is the Linux >> KPI, or lkpi. I believe Mellanox network card drivers are using this, and I >> know the drm-kmod graphics drivers are. This might be a starting point for >> you. > > Hi, > > I was just wondering if I could find more documentation about > linuxolator. I have been reading up "FreeBSD Device Drivers" and I > think it will help me in understanding network drivers, but I couldn't > find much information on the linux kernel api other than a blog on > drm-kmod (setup). > > Naveen > THe linuxolator, as I told you, is for running userland Linux binaries on FreeBSD, and has nothing to do with wanting to build Linux-only network drivers. I suggest you look at the code for the lkpi, you can find it here: https://github.com/freebsd/freebsd/tree/master/sys/compat/linuxkpi/common There are also drivers in the tree using it, such as mellanox network drivers, I think. The lkpi is meant to work like on Linux, but you probably need some glue to set up modules and so on. I suggest you start with looking at the relevant code. Regards -- Niclas
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