MLX5EN(4)

💖 MLX5EN 💖

okay bestie, gather round, because this is the mlx5en manual page from section 4 (Kernel Interfaces Manual) and she is GORGEOUS. this is the driver page for the Mellanox ConnectX-4, ConnectX-4 LX and ConnectX-5 based 100Gb, 50Gb, 40Gb, 25Gb and 10Gb Ethernet adapter driver. yes that's a lot of numbers, we're thriving. 🦋

---

✨ NAME ✨

mlx5en — the Mellanox ConnectX-4, ConnectX-4 LX and ConnectX-5 based 100Gb, 50Gb, 40Gb, 25Gb and 10Gb Ethernet adapter driver. that's her full government name, no cap.

---

🌸 SYNOPSIS 🌸

so like, you want this driver in your kernel? bet. drop these lines into your kernel configuration file:

options COMPAT_LINUXKPI
options RATELIMIT
device xz
device mlxfw
device firmware
device mlx5
device mlx5en

or if you'd rather load it as a module at run-time, run this as root:

kldload mlx5en

orrrr you can load it as a module at boot time by putting this into loader.conf(5):

mlx5en_load="YES"

pick your fighter, all three are valid, you're doing amazing 💅

---

👑 DESCRIPTION 👑

the mlx5en driver provides support for PCI Express Ethernet adapters based on ConnectX-4, ConnectX-4 LX and ConnectX-5. she's not just pretty, she's capable, and here's the receipts — the driver supports:

• Jumbo Frames
• Transmit/Receive checksum offload
• TCP segmentation offload (TSO)
• Large Receive Offload (LRO)
• HW Large Receive Offload (HW LRO)
• VLAN tag insertion/extraction
• VLAN checksum offload
• VLAN TSO
• hardware rate limiting (TXRTLMT)
• Receive Side Steering (RSS)

literally the whole buffet. the network interface is named mce.

for further hardware information and questions related to hardware requirements, go look at http://www.mellanox.com/ — they got you.

for more info on configuring this device, check out ifconfig(8). iykyk.

---

🔥 HARDWARE 🔥

the mlx5en driver supports 100Gb, 50Gb, 40Gb, 25Gb and 10Gb Ethernet adapters. here's the tea on speeds:

• ConnectX-5 supports:10/20/25/40/50/56/100Gb/s speeds.
• ConnectX-4 supports:10/20/25/40/50/56/100Gb/s speeds.
• ConnectX-4 LX supports:10/25/40/50Gb/s speeds (and reduced power consumption) :

and here's the whole squad of supported cards, all of them, every single one, we don't skip anyone in this house:

• Mellanox MCX455A-ECAT
• Mellanox MCX456A-ECAT
• Mellanox MCX415A-CCAT
• Mellanox MCX416A-CCAT
• Mellanox MCX455A-FCAT
• Mellanox MCX456A-FCAT
• Mellanox MCX415A-BCAT
• Mellanox MCX416A-BCAT
• Mellanox MCX4131A-GCAT
• Mellanox MCX4131A-BCAT
• Mellanox MCX4121A-ACAT
• Mellanox MCX4111A-ACAT
• Mellanox MCX4121A-XCAT
• Mellanox MCX4111A-XCAT

if your card is on this list, you ate. 🍓

---

🫶 SUPPORT 🫶

for general information and support, head to the Mellanox support website at: http://www.mellanox.com/.

and listen — if an issue is identified with this driver with a supported adapter, email all the specific information related to the issue to ⟨freebsd-drivers@mellanox.com⟩. be specific bestie, they need the deets, not the vibes. 💜

---

🌈 SEE ALSO 🌈

• ifconfig(8)

---

⭐ HISTORY ⭐

the mlx5en device driver first appeared in FreeBSD 11.0. a legend from the start, honestly.

---

🎀 AUTHORS 🎀

the mlx5en driver was written by Mellanox Technologies <freebsd-drivers@mellanox.com>. iconic behavior, truly.

---

and that's the whole page babes, no crumbs left behind 💖 this lil artifact comes to you from Debian, dated May 8, 2019, filed under MLX5EN(4) — main character energy in the Kernel Interfaces Manual, periodt. 🧚✨