libnvme(2)

💖 NAME 💖

okay bestie so this is enum nvme_constants — literally just a lil stash spot where all the ✨magic nvme numbers✨ live. A place to stash various constant nvme values. that's it. that's the whole vibe 🎀

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🌸 SYNOPSIS 🌸

enum nvme_constants {
    NVME_NSID_ALL ,
    NVME_NSID_NONE ,
    NVME_UUID_NONE ,
    NVME_CNTLID_NONE ,
    NVME_CNSSPECID_NONE ,
    NVME_LOG_LSP_NONE ,
    NVME_LOG_LSI_NONE ,
    NVME_LOG_LPO_NONE ,
    NVME_IDENTIFY_DATA_SIZE ,
    NVME_LOG_SUPPORTED_LOG_PAGES_MAX ,
    NVME_ID_NVMSET_LIST_MAX ,
    NVME_ID_UUID_LIST_MAX ,
    NVME_ID_CTRL_LIST_MAX ,
    NVME_ID_NS_LIST_MAX ,
    NVME_ID_SECONDARY_CTRL_MAX ,
    NVME_ID_DOMAIN_LIST_MAX ,
    NVME_ID_ENDURANCE_GROUP_LIST_MAX ,
    NVME_ID_ND_DESCRIPTOR_MAX ,
    NVME_FEAT_LBA_RANGE_MAX ,
    NVME_LOG_ST_MAX_RESULTS ,
    NVME_LOG_TELEM_BLOCK_SIZE ,
    NVME_LOG_FID_SUPPORTED_EFFECTS_MAX ,
    NVME_LOG_MI_CMD_SUPPORTED_EFFECTS_MAX ,
    NVME_LOG_MI_CMD_SUPPORTED_EFFECTS_RESERVED ,
    NVME_DSM_MAX_RANGES ,
    NVME_NQN_LENGTH ,
    NVMF_TRADDR_SIZE ,
    NVMF_TSAS_SIZE ,
    NVME_ZNS_CHANGED_ZONES_MAX ,
    NVME_STREAM_ID_MAX

};

look at all of them. thirty of them. iconic. no notes 💅

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✨ Constants ✨

ngl every single one of these gets its own little moment, so let's go 🫶

• NVME_NSID_ALL — a broadcast value, used to say "yeah give me ALL the namespaces" 👑
• NVME_NSID_NONE — the invalid namespace id, for when the nsid parameter just... isn't used in a command. ghosted fr 🙈
• NVME_UUID_NONE — use this when you wanna omit a uuid command parameter
• NVME_CNTLID_NONE — use this when you wanna omit a cntlid command parameter
• NVME_CNSSPECID_NONE — use this when you wanna omit a cns_specific_id command parameter
• NVME_LOG_LSP_NONE — use this when you wanna omit a log lsp command parameter
• NVME_LOG_LSI_NONE — use this when you wanna omit a log lsi command parameter
• NVME_LOG_LPO_NONE — use this when you wanna omit a log lpo command parameter
• NVME_IDENTIFY_DATA_SIZE — the transfer size for nvme identify commands. big important number energy 💖
• NVME_LOG_SUPPORTED_LOG_PAGES_MAX — the largest possible index in the supported log pages log.
• NVME_ID_NVMSET_LIST_MAX — the largest possible nvmset index in identify nvmeset
• NVME_ID_UUID_LIST_MAX — the largest possible uuid index in identify uuid list
• NVME_ID_CTRL_LIST_MAX — the largest possible controller index in identify controller list
• NVME_ID_NS_LIST_MAX — the largest possible namespace index in identify namespace list
• NVME_ID_SECONDARY_CTRL_MAX — the largest possible secondary controller index in identify secondary controller
• NVME_ID_DOMAIN_LIST_MAX — the largest possible domain index in the in domain list
• NVME_ID_ENDURANCE_GROUP_LIST_MAX — the largest possible endurance group index in the endurance group list
• NVME_ID_ND_DESCRIPTOR_MAX — the largest possible namespace granularity index in the namespace granularity descriptor list
• NVME_FEAT_LBA_RANGE_MAX — the largest possible LBA range index in feature lba range type
• NVME_LOG_ST_MAX_RESULTS — the largest possible self test result index in the device self test log
• NVME_LOG_TELEM_BLOCK_SIZE — specification defined size of Telemetry Data Blocks 🌈
• NVME_LOG_FID_SUPPORTED_EFFECTS_MAX — the largest possible FID index in the feature identifiers effects log.
• NVME_LOG_MI_CMD_SUPPORTED_EFFECTS_MAX — the largest possible MI Command index in the MI Command effects log.
• NVME_LOG_MI_CMD_SUPPORTED_EFFECTS_RESERVED — the reserved space in the MI Command effects log. reserved = do not touch bestie 💀
• NVME_DSM_MAX_RANGES — the largest possible range index in a data-set management command
• NVME_NQN_LENGTH — max length for NVMe Qualified Name
• NVMF_TRADDR_SIZE — max Transport Address size
• NVMF_TSAS_SIZE — max Transport Specific Address Subtype size
• NVME_ZNS_CHANGED_ZONES_MAX — max number of zones in the changed zones log page
• NVME_STREAM_ID_MAX — max number of stream IDs 🔥

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fr fr that's the whole page. thirty constants, zero filler, all vibes. save this in your brain's mental bookmarks bestie 🧚

💜 and that's a wrap on libnvme(2) — this one's from the API Manual, page enum nvme_constants, dated July 2026. mwah, go write some banger kernel-adjacent code 💅✨