Huh, running my cheap* Mellanox ConnectX-3 (infiniband) in eth mode on #FreeBSD was easier than I thougt.
Just add
mlx4en_load="YES"
to /boot/loader.conf,
# Mellanox
sys.device.mlx4_core0.mlx4_port1=eth
sys.device.mlx4_core0.mlx4_port2=eth
to /etc/sysctl.conf, and that's it, it works, 10Gb connectivity.
Important thing is, that if you use breakout cable (like I do, because it was less than half the price of QSFP-to-SFP+ transceiver, literally just 50 PLN/12 Euro)), only one transceiver is working (in my case they were marked, number '1' is working).
less than 50 Euro
Greg /
npub1dz…l6mhf
2025-03-01 23:12:58
Author Public Key
npub1dzv3tte6k3dg3yvvtvlfnsgl3fw420k5jqasm8m879d46mnyznvqll6mhfPublished at
2025-03-01 23:12:58Event JSON
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"content": "Huh, running my cheap* Mellanox ConnectX-3 (infiniband) in eth mode on #FreeBSD was easier than I thougt.\nJust add\n\nmlx4en_load=\"YES\"\n\n\nto /boot/loader.conf,\n\n# Mellanox\nsys.device.mlx4_core0.mlx4_port1=eth\nsys.device.mlx4_core0.mlx4_port2=eth\n\n\nto /etc/sysctl.conf, and that's it, it works, 10Gb connectivity.\n\nImportant thing is, that if you use breakout cable (like I do, because it was less than half the price of QSFP-to-SFP+ transceiver, literally just 50 PLN/12 Euro)), only one transceiver is working (in my case they were marked, number '1' is working).\n\nless than 50 Euro",
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