ENUM DCBNL_NUMTCS_ATTRS(9)

💅 enum dcbnl_numtcs_attrs(9) — the kernel API manual, but make it make sense

okay so bestie, welcome to the glow-up edition of the enum dcbnl_numtcs_attrs(9) page from the Kernel API Manual ✨ this is the little enum that's literally just here to count traffic classes for you. no cap, that's the whole vibe.

✨ NAME ✨

enum dcbnl_numtcs_attrs — number of traffic classes 🎀

🌸 SYNOPSIS 🌸

enum dcbnl_numtcs_attrs {
    DCB_NUMTCS_ATTR_UNDEFINED ,
    DCB_NUMTCS_ATTR_ALL ,
    DCB_NUMTCS_ATTR_PG ,
    DCB_NUMTCS_ATTR_PFC ,
    __DCB_NUMTCS_ATTR_ENUM_MAX ,
    DCB_NUMTCS_ATTR_MAX

};

like, look at her. five-ish members and a whole lot of ~purpose~ 💅

🦋 Constants 🦋

okay so here's the cast, and every single one of them matters:

• DCB_NUMTCS_ATTR_UNDEFINED — the unspecified attribute whose whole job is to catch errors 🫶 she's the safety net, the vibes check, the "wait that shouldn't be here" girlie.
• DCB_NUMTCS_ATTR_ALL — (NLA_FLAG) all traffic class attributes. all of them. the full set. main character energy 👑
• DCB_NUMTCS_ATTR_PG — (NLA_U8) number of traffic classes used for priority groups. iconic, numbered, and a u8 for reasons.
• DCB_NUMTCS_ATTR_PFC — (NLA_U8) number of traffic classes which can support priority flow control 🌈 also a u8, also doing the most.
• __DCB_NUMTCS_ATTR_ENUM_MAX — -- undescribed -- 😭 the manpage literally has nothing for her. she's mysterious. she's private. respect her privacy fr fr.
• DCB_NUMTCS_ATTR_MAX — -- undescribed -- 💀 same situation. no description, only vibes. we love an enigmatic icon.

ngl, two of these entries being -- undescribed -- is not me being lazy, that is genuinely what the original page says. keeping the facts, keeping the mystery ✨

🔥 SEE ALSO 🔥

go read these next, bestie, they're all linked up:

• Kernel file ./include/uapi/linux/dcbnl.h
• struct cee_pg(9)
• struct cee_pfc(9)
• struct dcb_peer_app_info(9)
• enum dcbnl_commands(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 dcb_general_attr_values(9)

and that's the whole page 💖 this queen lives in ./include/uapi/linux, and the page itself is dated October 2026 — so yeah, she's from the future and she's still just counting traffic classes. slay 🌟