STRUCT DVB_DISEQC_SLAVE_REPLY(9)

💅 struct dvb_diseqc_slave_reply(9) 💅

okay bestie, welcome to the Kernel API Manual ✨ — this is the page for struct dvb_diseqc_slave_reply, which is literally the "DiSEqC received data" struct. it's giving satellite-nerd royalty 👑

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🌸 SYNOPSIS 🌸

struct dvb_diseqc_slave_reply {
    __u8 msg[4];
    __u8 msg_len;
    int timeout;
 };

that's it. three members. small struct, main character energy 🎀

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✨ Members ✨

• msg — bestie, this is the DiSEqC message buffer, and its whole job is to store a message received via DiSEqC 🛰️. inside it you get one byte of header with: framing, plus an optional argument of up to 3 bytes of data. yes, 1 + 3 = 4, and that's why the array is msg[4]. math ate 💅
• msg_len — the length of the DiSEqC message. valid values are 0 to 4, where 0 means no message 🙈 (so like, 0 is the "nobody texted you back" state, no cap).
• timeout — this one's the impatient queen 👑: return from ioctl after timeout ms with errorcode when no message was received. so if nothing shows up in time, she's out, with an error. periodt.

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🦋 Description 🦋

check out the DiSEqC bus spec available on http://www.eutelsat.org/ for the possible messages that can be used 📡✨. that's the lore drop, go read the source, iykyk.

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👀 SEE ALSO 👀

Kernel file ./include/uapi/linux/dvb/frontend.h — and the whole friend group 💖:

• enum fe_caps(9)
• struct dvb_frontend_info(9)
• struct dvb_diseqc_master_cmd(9)
• enum fe_sec_voltage(9)
• enum fe_sec_tone_mode(9)
• enum fe_sec_mini_cmd(9)
• enum fe_status(9)
• enum fe_spectral_inversion(9)
• enum fe_code_rate(9)
• enum fe_modulation(9)
• enum fe_transmit_mode(9)
• enum fe_guard_interval(9)
• enum fe_hierarchy(9)
• enum fe_interleaving(9)
• enum fe_pilot(9)
• enum fe_rolloff(9)
• enum fe_delivery_system(9)
• enum atscmh_sccc_block_mode(9)
• enum atscmh_sccc_code_mode(9)
• enum atscmh_rs_frame_ensemble(9)
• enum atscmh_rs_frame_mode(9)
• enum atscmh_rs_code_mode(9)
• enum fecap_scale_params(9)
• struct dtv_stats(9)
• struct dtv_fe_stats(9)
• struct dtv_property(9)
• struct dtv_properties(9)

like, that's the entire group chat and they're all slaying in their own lane 🌈

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that's the whole page, bestie 🫶 — straight from ./include/uapi/linux/dvb, dated October 2026, and yeah it's giving kernel-manpage-but-make-it-cute. mwah 💋 go read your DiSEqC spec 🌟