ENUM NFNL_HOOK_ATTRIBUTES(9)

💅 enum nfnl_hook_attributes(9) 💅

okay bestie, welcome to the Kernel API Manual — this is the page for enum nfnl_hook_attributes, and it's literally the netfilter hook netlink attributes situation. yes that's a mouthful, no I will not be shortening it 🎀

---

✨ NAME ✨

enum nfnl_hook_attributes — netfilter hook netlink attributes 🦋

---

🌸 SYNOPSIS 🌸

enum nfnl_hook_attributes {
    NFNLA_HOOK_UNSPEC ,
    NFNLA_HOOK_HOOKNUM ,
    NFNLA_HOOK_PRIORITY ,
    NFNLA_HOOK_DEV ,
    NFNLA_HOOK_FUNCTION_NAME ,
    NFNLA_HOOK_MODULE_NAME ,
    NFNLA_HOOK_CHAIN_INFO ,
    __NFNLA_HOOK_MAX

};

like, that's the whole enum, no cap 💖

---

👑 Constants 👑

okay so here's the vibe check on every single one of these, and yes we're doing all of them 🫶

• NFNLA_HOOK_UNSPEC — bestie, the original literally just says -- undescribed -- 😭 so that's all I got. it's the unspecified one. iconic in its mystery.
• NFNLA_HOOK_HOOKNUM — the netfilter hook number, typed as NLA_U32 ✨
• NFNLA_HOOK_PRIORITY — the netfilter hook priority, also NLA_U32 💅
• NFNLA_HOOK_DEV — the netdevice name, and this one's NLA_STRING 🌸
• NFNLA_HOOK_FUNCTION_NAME — the hook function name, NLA_STRING, slay 🦋
• NFNLA_HOOK_MODULE_NAME — the kernel module that registered this hook, NLA_STRING — like, which module is the main character here 👑
• NFNLA_HOOK_CHAIN_INFO — basechain hook metadata, NLA_NESTED, and it's giving nested energy fr fr 🎀
• __NFNLA_HOOK_MAX — again with the -- undescribed -- 🙈 it's a mystery, we love that for it

---

🔥 SEE ALSO 🔥

go look at the kernel file ./include/uapi/linux/netfilter/nfnetlink_hook.h — that's where all of this actually lives 💜

and then these other icons:

• enum nfnl_hook_chain_info_attributes(9)
• enum nfnl_hook_chaintype(9)
• enum nfnl_hook_bpf_attributes(9)

---

okay that's the whole page, you ate that honestly 🌈 this came out of ./include/uapi/linux/netfilter and it's dated October 2026, so like, mark your calendars bestie ⭐💖