Date: Fri, 7 Feb 2020 23:46:16 +0200 From: Konstantin Belousov <kib@freebsd.org> To: Adam Peace <adam.e.peace@gmail.com> Cc: freebsd-net@freebsd.org, freebsd-drivers@mellanox.com Subject: Re: mlx5en - PTYS reg - eth_proto_oper bit 19 not defined Message-ID: <20200207214616.GT4808@kib.kiev.ua> In-Reply-To: <CAPHgngNSdM=8YbonH0TX%2Bby3kOjhhCeg4WAsOybWZhx2Sx%2BEgQ@mail.gmail.com> References: <CAPHgngNSdM=8YbonH0TX%2Bby3kOjhhCeg4WAsOybWZhx2Sx%2BEgQ@mail.gmail.com>
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On Fri, Feb 07, 2020 at 02:15:53PM -0500, Adam Peace wrote: > Hello, > > I'm using the mlx5en driver that's in the FreeBSD 11.3 tree for a Mellanox > ConnectX-4 ethernet card on an Azure VM. > > The problem that I'm seeing is that the value being retrieved from the PTYS > register for eth_proto_oper is 0x80000, which is bit 19 of the field, but a > value for bit 19 is not defined in the mlx5e_link_speed enum. This causes It is 50GBase-KR4 whatever this means. > the driver to not find an entry in the mlx5e_mode_table and the > media.subtype and media.baudrate are not set. This does not stop the > mlx5en.ko module from loading, but network connectivity is affected. > > It seems that this enum is phased out in the upstream Linux driver, but > it's not clear to me how the replacement method works. Is this a known > issue? It seems that FreeBSD 12.1 and master still use the method that's > used in 11.3. Does anyone have any insight on this? The problem seems to be that net/if_media.h does not pre-define this mode. It is somewhat larger patch than just adding the entry in the table in the driver.
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