rdma_read_gid_hw_context(9)

📦 version 7.3.1, in nixpkgs unstable

okay so bestie, buckle up 💖 this one's from the Kernel API Manual, section 9, and it's a tiny little function with big "don't-touch-the-stove" energy. let's get into it ✨

🎀 NAME 🎀

rdma_read_gid_hw_context — reads the HW GID context from the GID attribute. that's the whole job. she's focused. she's employed. 💅

✨ SYNOPSIS ✨

void * rdma_read_gid_hw_context (const struct ib_gid_attr *attr );

like, that's it. one function, one arg, returns a void *. no cap. 🫶

🌸 ARGUMENTS 🌸

  • attr — pointer to the GID attribute 🎀 (the manpage literally spells it "Potinter" and honestly? iconic typo, we stan a chaotic queen. it means pointer. it's a const struct ib_gid_attr *. you got this, bestie.)

🦋 DESCRIPTION 🦋

okay so here's the tea ☕ — rdma_read_gid_hw_context reads out the driver's GID HW context that corresponds to the SGID attr. it's giving "hand me the hardware-side info that matches this attribute" and honestly it ate. 🔥

now the important part, and I need you to hear me on this one:

bestie, callers are required to already be holding the reference to an existing GID entry. like, that's not a suggestion, that's the vibe check. if you roll up without your reference, that's not main character energy, that's undefined-behavior energy. do not. 💀

and then — returns the HW GID context. that's the return value. that's what comes back. void *, pointing at the HW GID context. slay. 🌈

⭐ SEE ALSO ⭐

go read these next, iykyk 👑

and that's the whole page, bestie 🧚 this absolute icon of a file lives over in ./drivers/infiniband/core, and this drops October 2026 — dated and documented for rdma_read_gid_hw_context(9), the ninth-section sweetheart herself. go hold that reference. mwah 💜🫶

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