mei_cldev_send_vtag(9)

💌 mei_cldev_send_vtag(9) — your girl's guide to sending with a vtag 💅

okay so bestie, welcome to the Kernel API Manual entry for mei_cldev_send_vtag ✨ this is a real one, a whole kernel function, and she's literally the "me device send with vtag (write)" girlie. yes, that's her NAME. no cap. 🌸

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✨ SYNOPSIS ✨

like, here's the actual shape of her, do not come for me, this is verbatim:

ssize_t mei_cldev_send_vtag (struct mei_cl_device *cldev , const u8 *buf
, size_t length , u8 vtag );

it's giving "four arguments and a dream" 🎀 lowkey iconic, ngl.

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🌈 ARGUMENTS 🌈

here's the tea on every single one of them, no skipping, we don't do that here 🫶

• cldev — the me client device 💖 like, the device you're talking to. your main character.
• buf — buffer to send 📦 the actual lil payload of bytes you want to yeet out into the world.
• length — buffer length 📏 how big that buffer is, obviously. be honest with her.
• vtag — virtual tag 🏷️ the tag. the virtual one. the vtag, if you will. iykyk.

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⭐ RETURN ⭐

she gives you back one of these, and honestly? slay 🦋

• written size in bytes ✅ like, how much actually got written out. the receipt.
• < 0 on error 😭 not her best moment, but it happens. negative means bad vibes, handle it.

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👑 SEE ALSO 👑

okay this is the part where she name-drops literally everyone she knows, and bestie i am NOT about to leave a single one out. the kernel file to start with: ./drivers/misc/mei/bus.c — and then the whole friend group:

__mei_cl_send(9), __mei_cl_send_timeout(9), __mei_cl_recv(9), mei_cldev_send_vtag_timeout(9), mei_cldev_recv_vtag(9), mei_cldev_recv_timeout(9), mei_cldev_recv_vtag_timeout(9), mei_cldev_send(9), mei_cldev_send_timeout(9), mei_cldev_recv(9), mei_cl_bus_rx_work(9), mei_cl_bus_notif_work(9), mei_cl_bus_notify_event(9), mei_cl_bus_rx_event(9), mei_cldev_register_rx_cb(9), mei_cldev_register_notif_cb(9), mei_cldev_get_drvdata(9), mei_cldev_set_drvdata(9), mei_cldev_uuid(9), mei_cldev_ver(9), mei_cldev_mtu(9), mei_cldev_enabled(9), mei_cl_bus_module_get(9), mei_cl_bus_module_put(9), mei_cl_bus_vtag(9), mei_cl_bus_vtag_alloc(9), mei_cl_bus_vtag_free(9), mei_cldev_enable(9), mei_cldev_unregister_callbacks(9), mei_cldev_disable(9), mei_cldev_send_gsc_command(9), mei_cl_device_find(9), mei_cl_device_match(9), mei_cl_device_probe(9), mei_cl_device_remove(9), mei_cl_device_uevent(9), mei_cl_bus_set_name(9), mei_cl_bus_dev_alloc(9), mei_cl_bus_dev_setup(9), mei_cl_bus_dev_add(9), mei_cl_bus_dev_stop(9), mei_cl_bus_dev_destroy(9), mei_cl_bus_remove_device(9), mei_cl_bus_remove_devices(9), mei_cl_bus_dev_init(9), mei_cl_bus_rescan(9)

like. forty-six of them. she's popular. we respect it. 💜

ngl bestie, that's the whole page — every flag, every arg, every return value, all present and accounted for. nothing dropped, nothing invented. periodt. 💀

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and that's a wrap, gorgeous 🌸 this lil number lives in <pink>./drivers/misc/mei</pink>, dated <purple>October 2026</purple>, and she answers to <hotpink>mei_cldev_send_vtag(9)</hotpink> 💖 go send some bytes with a vtag, you absolute icon. mwah. 🫶✨