register_cb_ops(9)

💅 register_cb_ops — the "here's my number, call me when packets arrive" page 🎀

Ok bestie, welcome to register_cb_ops(9) from the Kernel API Manual. This is the moment where your protocol driver slides its callback functions over to the LL2 layer and is like "here, you handle the Rx/Tx gossip, I trust you 💖". Lowkey important: this has to happen before start. Like, before-before. Not after. Before. No cap.

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✨ NAME ✨

register_cb_ops — "Protocol driver register the callback for Rx/Tx packets. Should be called before `start'." 🦋

That's the whole vibe: you register the callbacks for Rx and Tx packets, and you do it before start. Not me showing up to the group chat after the party already ended 🙈.

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🌸 SYNOPSIS 🌸

void register_cb_ops (struct qed_dev *cdev , const struct qed_ll2_cb_ops
*ops , void *cookie );

Yeah she's void in the signature and she's returning 0 on success down in RETURN — that's literally what the page says, iykyk, we don't question the icon 👑.

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🫶 ARGUMENTS 🫶

• cdev — the Qed dev pointer. Your main character pointer, the one everything else hangs off of 💜.
• ops — the callback functions to register for Rx / Tx. This is you handing over your little black book of "call this when stuff happens" ✨.
• cookie — to be passed to the callback functions. A little treat that gets handed to your callbacks 🍓 — you put it in, they get it back, adorable.

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🔥 RETURN 🔥

0 on success, otherwise an error value. Zero is the good one, zero is slay, anything else means something went sideways 😭.

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🌈 SEE ALSO 🌈

• Kernel file ./include/linux/qed/qed_ll2_if.h
• start(9)
• stop(9)
• start_xmit(9)
• get_stats(9)

Go read those too bestie, they're all in ./include/linux/qed and they're all part of the era 🕰️💅.

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🎀 gentle reminder fr fr: if you call register_cb_ops after start, you are not the moment. The page says call it before start. Periodt.

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And that's the whole page! Shoutout to the source ./include/linux/qed, dated October 2026 — she was born in the future and she's already iconic ⭐🦋 — catch you in the next manpage, bestie! 💖🧚‍♀️