hid_bpf_hw_output_report(9)

💅 hid_bpf_hw_output_report(9) 💅

okay bestie, welcome to the Kernel API Manual ✨ this one is literally all about hid_bpf_hw_output_report, and yes, it does exactly what the name says: it sends an output report to a HID device 🫶 no cap.

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✨ NAME ✨

hid_bpf_hw_output_report — send an output report to a HID device 💖

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🌸 SYNOPSIS 🌸

__bpf_kfunc int hid_bpf_hw_output_report (struct hid_bpf_ctx *ctx , __u8
*buf , size_t buf__sz );

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🎀 ARGUMENTS 🎀

• ctx — the HID-BPF context that was previously allocated in hid_bpf_allocate_context 👑 like, it has to come from there, okay?
• buf — a PTR_TO_MEM buffer 🦋 that's the vibe.
• buf__sz — the size of the data to transfer ⭐ literally how much data is moving.

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💀 DESCRIPTION 💀

Returns the number of bytes transferred on success 💖 and a negative error code otherwise 😭 periodt.

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🌈 SEE ALSO 🌈

Kernel file ./drivers/hid/bpf/hid_bpf_dispatch.c — plus these besties:

• hid_bpf_get_data(9)
• hid_bpf_allocate_context(9)
• hid_bpf_release_context(9)
• hid_bpf_hw_request(9)
• hid_bpf_try_input_report(9)
• hid_bpf_input_report(9)

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💅 and that's the whole page, bestie 💅

this iconic little number lives in ./drivers/hid/bpf, and it's dated October 2026 🎀 mwah 💋