Mellanox MT26448



Trying to get a Mellanox MT26448 working on my TrueOS and google isn’t helping.

The only thing TrueOS x Mellanox I’ve found was that you guys were getting a ConnectX-2 for the new server back in April:

The box sees the card at boot, but no drivers:

root@optiplex:/usr/home/mello # dmesg | grep pci1
pci1: <ACPI PCI bus> on pcib1
pci1: <network, ethernet> at device 0.0 (no driver attached)

root@optiplex:/usr/home/mello # lspci
01:00.0 Ethernet controller: Mellanox Technologies MT26448 [ConnectX EN 10GigE, PCIe 2.0 5GT/s] (rev b0)

Any ideas how to get the driver for it loaded, so it can be used?



did you search “freebsd Mellanox MT26448”?


I didn’t see your model as supported.


I did search. Also found: wish I’m not sure if it’s the same type of card.

The thing is if “The OFED stack was merged in March 2011” and the TureOS guys were getting their hands on some Mellanox back in April, or the MT26448 is too old to be supported by FreeBSD (only Linux is supporting) or FreeBSD didn’t get there.

In reality I’m looking for something that can be easy done by a n00b (if there is such thing with *BSD) to help document a how-to for that.

If isn’t possible/supported/etc, I’m fine with my Chelsios …

Thanks Rod for your reply :slight_smile:


I checked out those links, and it seems like it is possible to get it to work on BSD but (from what I understand) you have to edit your kernel, and rebuild it… That is way out of my league though.


Yeap, I saw that when I was testing FreeBSD with Mellanox. A little too complex for a new user. It, for sure, a little above my skills and will require some work.

I’ll test Chelsio next, but I suspect I won’t have any issues.

Just trying to build a matrix that home users can use when trying to get a 10Gb network working.

Pretty interesting learning, I must say.

As I’m a fan of FreeBSD, I was hoping Mellanox was an option, but so far all Linux flavors I’ve tested are compatible, and imagine, Windows 10 is also compatible without any tweaks.

To make things a little bit more interesting, for me, I’ll need to get mine working with ESXi … but that will come later and on another forum. Just got a T5 for that.