NVMF_TCP(4)

💅 nvmf_tcp(4) — the TCP transport for NVM Express over Fabrics, bestie

okay so real talk, this is the manual page for nvmf_tcp, aka the cutest little kernel module that lets NVMe over Fabrics ride on plain old TCP/IP ✨ like it's literally the matchmaker between your NVMe storage and your network stack, and honestly? iconic.

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🌸 NAME 🌸

nvmf_tcp — TCP transport for NVM Express over Fabrics 🫶

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✨ SYNOPSIS ✨

so there are two ways to get this baby into your life, and both are valid 💖

option one: bake it into the kernel. just drop this line into your kernel configuration file:

device nvmf_tcp

option two: load it at boot o'clock. put this line in loader.conf(5) and you're so done:

nvmf_tcp_load="YES"

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🦋 DESCRIPTION 🦋

the nvmf_tcp module implements the software TCP/IP transport for NVM Express over Fabrics. no cap, that's the whole vibe — it's the glue layer, the bridge, the main character that makes NVMeoF work over TCP 🎀

it can be used by either the in-kernel NVMeoF host driver or controller. both? both. both is good 💅

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🎀 SYSCTL VARIABLES 🎀

the following variables are available as both sysctl(8) variables and loader(8) tunables — yes bestie, you can set them at runtime or at load time, we love options 🌈

• kern.nvmf.tcp.max_transmit_data — the maximum data payload size of C2H_DATA and H2C_DATA PDUs. heads up though: a remote controller may enforce a lower limit on the size of H2C_DATA PDUs via the MAXH2CDATA parameter 🫶 and the default size is 256 kilobytes ⭐

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🔥 SEE ALSO 🔥

• nvmf(4)
• nvmft(4)

go read those too, iykyk 🧚

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👑 HISTORY 👑

the nvmf_tcp module first appeared in FreeBSD 15.0 — a whole era 💜

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🌟 AUTHORS 🌟

the nvmf_tcp module was developed by John Baldwin <jhb@FreeBSD.org> under sponsorship from Chelsio Communications, Inc. — king behavior fr fr 👑

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okay that's the whole page, no notes, you ate that 💀💖

and for the little sign-off: this beauty came from the Debian fam, dated July 25, 2024 — go forth and network your NVMe, bestie 🌸🦋✨