usb_endpoint_xfer_bulk(9)

💅 usb_endpoint_xfer_bulk — like, the check-if-it's-bulk endpoint girlie

okay so bestie, this is usb_endpoint_xfer_bulk from the Kernel API Manual, and honestly? she's a little icon. tiny function, one job, does it flawlessly. no cap.

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✨ SYNOPSIS ✨

int usb_endpoint_xfer_bulk (const struct usb_endpoint_descriptor *epd );

that's it. that's the whole flex. 🎀

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🌸 ARGUMENTS 🌸

• epd — the endpoint you want checked, bb. hand her the descriptor and she'll tell you what's tea. 💖

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🦋 DESCRIPTION 🦋

so like, she looks at the endpoint and goes "is this one a bulk transfer type or not" and that's genuinely the entire personality.

returns true if the endpoint is of type bulk, otherwise it returns false. simple as. slay. ✨

ngl the whole function is one vibe check and she passes it every time. one job, main character energy, zero notes. 💅

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👑 SEE ALSO 👑

the whole friend group, fr fr — go say hi:

• Kernel file ./include/uapi/linux/usb/ch9.h struct usb_ctrlrequest(9)
• usb_endpoint_num(9)
• usb_endpoint_type(9)
• usb_endpoint_dir_in(9)
• usb_endpoint_dir_out(9)
• usb_endpoint_xfer_control(9)
• usb_endpoint_xfer_int(9)
• usb_endpoint_xfer_isoc(9)
• usb_endpoint_is_bulk_in(9)
• usb_endpoint_is_bulk_out(9)
• usb_endpoint_is_int_in(9)
• usb_endpoint_is_int_out(9)
• usb_endpoint_is_isoc_in(9)
• usb_endpoint_is_isoc_out(9)
• usb_endpoint_maxp(9)
• usb_endpoint_maxp_mult(9)

like, the entire endpoint cinematic universe is right there. iykyk 🫶

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and that's the page!! this little love letter lives in ./include/uapi/linux/usb and it's dated October 2026 — so if you ever need to cite her, that's the receipt bestie 💜🍓 mwah, go read the whole kernel, ily, bye!! 💖✨