mlx5_fpga_sbu_conn_sendmsg(9)

📦 version 7.3.1, in nixpkgs unstable

💅 mlx5_fpga_sbu_conn_sendmsg — like, the Kernel API Manual page, bestie

okay so real talk, this is a page straight out of the Kernel API Manual and it's all about mlx5_fpga_sbu_conn_sendmsg(9). lowkey iconic name, i know. let's get into it ✨

🌸 NAME 🌸

mlx5_fpga_sbu_conn_sendmsg — the function that queues the transmission of a packet. that's it, that's the whole vibe 🎀

✨ SYNOPSIS ✨

int mlx5_fpga_sbu_conn_sendmsg (struct mlx5_fpga_conn *conn , struct
       mlx5_fpga_dma_buf *buf );

bestie it literally takes two things, you got this 🫶

🦋 ARGUMENTS 🦋

  • conn — an FPGA SBU connection. yes, the actual connection, the main character 👑
  • buf — the packet buffer. the payload. the moment 💌

💖 DESCRIPTION 💖

okay so what this does is queue a packet for transmission over an FPGA SBU connection. it's giving "drop it off and let it cook" energy fr fr 🔥

now the important bit, and i need you to hear me on this one: the buffer should not be modified or freed until completion. like, do not touch it, do not free it, do not look at it funny. hands off 🙈

upon completion, the buf's complete callback is invoked — and that's how you find out whether the transmission succeeded or errored out. so basically the callback is your bestie texting you back with the vibe check result 💀✨

🍓 RETURN 🍓

  • 0 if successful 🎉
  • or an error value otherwise 😭

🌈 SEE ALSO 🌈

like a whole little friend group of manpages, go read them all, i'll wait 💅

and that's a wrap, bestie! this lil page came from ./drivers/net/ethernet/mellano... and it's dated October 2026 — so yeah, future-coded but still serving mlx5_fpga_sbu_conn_sendmsg(9) realness. mwah 💋💖

📦 where this page comes from