ENUM DCBNL_COMMANDS(9)

💅 enum dcbnl_commands — Kernel API Manual

okay bestie, so this page is literally the kernel API manual entry for enum dcbnl_commands(9), and it's giving "the entire menu of DCB commands you can fire at a device" ✨ iykyk. Let's get into it.

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🌸 NAME 🌸

enum dcbnl_commands — the supported DCB commands, like, the whole roster 👑

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✨ SYNOPSIS ✨

no cap, here's the exact enum, every single member, character for character:

enum dcbnl_commands {
    DCB_CMD_UNDEFINED ,
    DCB_CMD_GSTATE ,
    DCB_CMD_SSTATE ,
    DCB_CMD_PGTX_GCFG ,
    DCB_CMD_PGTX_SCFG ,
    DCB_CMD_PGRX_GCFG ,
    DCB_CMD_PGRX_SCFG ,
    DCB_CMD_PFC_GCFG ,
    DCB_CMD_PFC_SCFG ,
    DCB_CMD_SET_ALL ,
    DCB_CMD_GPERM_HWADDR ,
    DCB_CMD_GCAP ,
    DCB_CMD_GNUMTCS ,
    DCB_CMD_SNUMTCS ,
    DCB_CMD_PFC_GSTATE ,
    DCB_CMD_PFC_SSTATE ,
    DCB_CMD_BCN_GCFG ,
    DCB_CMD_BCN_SCFG ,
    DCB_CMD_GAPP ,
    DCB_CMD_SAPP ,
    DCB_CMD_IEEE_SET ,
    DCB_CMD_IEEE_GET ,
    DCB_CMD_GDCBX ,
    DCB_CMD_SDCBX ,
    DCB_CMD_GFEATCFG ,
    DCB_CMD_SFEATCFG ,
    DCB_CMD_CEE_GET ,
    DCB_CMD_IEEE_DEL ,
    __DCB_CMD_ENUM_MAX ,
    DCB_CMD_MAX

};

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🎀 CONSTANTS 🎀

okay so this is the part where we go one by one, no skipping, not me being thorough 💅

• DCB_CMD_UNDEFINED — the unspecified command, literally just there to catch errors 🚨
• DCB_CMD_GSTATE — request the state of DCB in the device (the "g" is for get, bestie, we love a pattern)
• DCB_CMD_SSTATE — set the state of DCB in the device
• DCB_CMD_PGTX_GCFG — request the priority group configuration for Tx
• DCB_CMD_PGTX_SCFG — set the priority group configuration for Tx
• DCB_CMD_PGRX_GCFG — request the priority group configuration for Rx
• DCB_CMD_PGRX_SCFG — set the priority group configuration for Rx
• DCB_CMD_PFC_GCFG — request the priority flow control configuration
• DCB_CMD_PFC_SCFG — set the priority flow control configuration
• DCB_CMD_SET_ALL — apply all the changes to the underlying device, the "commit everything" button fr fr 🔥
• DCB_CMD_GPERM_HWADDR — get the permanent MAC address of the underlying device. Only useful when using bonding. that's it, that's the whole note 🫶
• DCB_CMD_GCAP — request the DCB capabilities of the device
• DCB_CMD_GNUMTCS — get the number of traffic classes currently supported
• DCB_CMD_SNUMTCS — set the number of traffic classes
• DCB_CMD_PFC_GSTATE — the manpage literally just says -- undescribed -- 😭 that's all we get
• DCB_CMD_PFC_SSTATE — also -- undescribed -- 💀
• DCB_CMD_BCN_GCFG — -- undescribed --, yeah same energy
• DCB_CMD_BCN_SCFG — -- undescribed --, moving on bestie
• DCB_CMD_GAPP — get application protocol configuration
• DCB_CMD_SAPP — set application protocol configuration
• DCB_CMD_IEEE_SET — set IEEE 802.1Qaz configuration
• DCB_CMD_IEEE_GET — get IEEE 802.1Qaz configuration
• DCB_CMD_GDCBX — get DCBX engine configuration
• DCB_CMD_SDCBX — set DCBX engine configuration
• DCB_CMD_GFEATCFG — get DCBX features flags
• DCB_CMD_SFEATCFG — set DCBX features negotiation flags
• DCB_CMD_CEE_GET — get CEE aggregated configuration
• DCB_CMD_IEEE_DEL — delete IEEE 802.1Qaz configuration, bye bye 🦋
• __DCB_CMD_ENUM_MAX — -- undescribed -- (the sentinel, sitting there mysteriously)
• DCB_CMD_MAX — -- undescribed -- (the other sentinel, equally mysterious)

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🦋 SEE ALSO 🦋

the kernel file ./include/uapi/linux/dcbnl.h, and then a whole friend group of structs and enums that you should lowkey also go read: struct cee_pg(9), struct cee_pfc(9), struct dcb_peer_app_info(9), enum dcbnl_attrs(9), enum ieee_attrs(9), enum cee_attrs(9), enum dcbnl_pg_attrs(9), enum dcbnl_tc_attrs(9), enum dcbnl_cap_attrs(9), enum dcbnl_numtcs_attrs(9), enum dcb_general_attr_values(9) — iconic lineup, honestly 🌈

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real talk: this enum deffo is the plumbing behind DCB config on your NIC, so treat it with main character respect 👑

okay that's the whole page!! sourced from ./include/uapi/linux, dated October 2026, and it's literally titled enum dcbnl_commands(9) — slay, go configure your device, mwah 💖🎀✨