libnvme(9)

🎀 NAME 🎀

okay so we're doing libnvme(9) today bestie — this is the API Manual and honestly? it's giving lowkey iconic. the star of the show: struct nvmf_auth_negotiate — the AUTH_Negotiate message, host to controller. yep. that's the vibe. 💅

✨ SYNOPSIS ✨

here's the whole shape of it, character for character, no cap:

struct nvmf_auth_negotiate {
    __u8 auth_type;
    __u8 auth_id;
    __u16 rsvd2;
    __le16 t_id;
    __u8 sc_c;
    __u8 napd;
    __u8 apd[];
 };

look at that little apd[] flexible array at the end. main character energy fr fr. 🦋

🫶 Members 🫶

okay bestie, let's go field by field, because every single one of these matters and we're not skipping a single crumb 🔥

• auth_type — the Authentication Type, and like… go check enum nvmf_auth_protocol_id for the deets. it gets Cleared to 0h — aka common messages. periodt. ✨
• auth_id — the Authentication Identifier, see enum nvmf_auth_id. this one's also Cleared to 0h, which means AUTH_Negotiate. slay. 💖
• rsvd2 — Reserved. that's it, that's the whole field. she's just sitting there being reserved, respect her privacy 🙈
• t_id — the Transaction Identifier. iykyk. 🎀
• sc_c — Secure Channel Concatenation, see enum nvmf_auth_sc_c for what's up. 🌸
• napd — Number of Authentication Protocol Descriptors. yes it's a mouthful. yes we still love her. 👑
• apd — the Authentication Protocol Descriptor list, and it holds napd entries of 64 bytes each. ngl, here's the tea: currently it's always a struct nvmf_auth_kxchap_protocol_descriptor, because that's the only authentication protocol defined. the one and only. no competition. literally. 💀

lowkey reminder bestie: if you mess with napd, the whole apd list math changes with it — 64 bytes per entry, every time. keep that in your group chat notes 📝

that's the whole page, no crumbs left behind 💜 like, we covered literally every field, every enum reference, every 0h, every 64 bytes. ate and left no evidence. 🍓

later bestie — this was October 2026, struct nvmf_auth_negotiate, straight outta libnvme(9). mwah 💋🌈