STRUCT ETHTOOL_CMIS_CDB(9)

💅 struct ethtool_cmis_cdb(9) — like, the CDB commands parameters page, bestie

okay so this is a page from the Kernel API Manual (yes, that Kernel API Manual, the one that lives rent-free in every kernel dev's brain) and it's all about struct ethtool_cmis_cdb — the little struct that holds the params for your CDB commands. small struct, big main character energy ✨

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🌸 NAME 🌸

struct ethtool_cmis_cdb — CDB commands parameters, fr fr. that's the whole vibe.

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🎀 SYNOPSIS 🎀

struct ethtool_cmis_cdb {
    u8 cmis_rev;
    u8 read_write_len_ext;
    u16 max_completion_time;
};

look at her. three fields. absolutely iconic. no notes 💖

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✨ Members ✨

• cmis_rev — this one's a u8 and it's the CMIS revision major. like the major version number of CMIS. that's it, that's the field 🫶
• read_write_len_ext — also a u8, and okay so this one's the allowable additional number of byte octets to the LPL in a READ or a WRITE CDB commands. yes, exactly like that. it's giving "extra octets on top of the LPL" and we respect it 💅
• max_completion_time — a u16 holding the maximum CDB command completion time in msec. msec!! milliseconds!! so you know exactly how long to wait before you start spiraling 😭⏱️

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🔥 SEE ALSO 🔥

• the kernel file ./net/ethtool/cmis.h — go read it, iykyk 👑
• struct ethtool_cmis_cdb_request(9)
• struct ethtool_cmis_cdb_cmd_args(9)
• struct ethtool_cmis_cdb_rpl_hdr(9)
• struct ethtool_cmis_cdb_rpl(9)

the whole friend group, lowkey a slay 🌈

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not me writing a whole manpage and it's literally three struct fields. anyway bestie, memorize them, the vibe check is tomorrow 💀💖

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that's it, that's the page!! this cutie lives in ./net/ethtool, dated October 2026, and it's brought to you straight from the Kernel API Manual — periodt, go forth and cmis responsibly 🧚‍♀️🌸🦋