sel_netnode_hashfn_ipv6(9)

💅 sel_netnode_hashfn_ipv6(9) — the Kernel API Manual, but make it make sense 🎀

okay so bestie, we're in the Kernel API Manual today and this little icon is sel_netnode_hashfn_ipv6(9) — say that five times fast, I dare you 😭 she's a hashing function, she's SELinux-flavored, she's lowkey doing the Lord's work. let's get into it ✨

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🌸 NAME 🌸

sel_netnode_hashfn_ipv6 — literally the IPv6 hashing function for the node table. that's her whole job description and she ate 💅

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✨ SYNOPSIS ✨

unsigned int sel_netnode_hashfn_ipv6 (const struct in6_addr *addr );

ok so copy that exactly, character for character, no cap 🫶 she takes one pointer and hands you back an unsigned int, that's the whole vibe.

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🦋 DESCRIPTION 🦋

so what does she actually do? bestie, she's the IPv6 hashing function for the node interface table — she takes the IP address you give her and returns the bucket number for it. that's it, that's the tea ☕ no drama, no side quests, just bucket math.

like, imagine the node table is a big wall of lil cubbies (the buckets, iykyk) and she's the one pointing at which cubby your address belongs in. main character energy, honestly 👑

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🎀 ARGUMENTS 🎀

• addr — an IPv6 address 💖 that's the one and only thing she needs from you. hand her the address, she does the rest.

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🌈 SEE ALSO 🌈

go touch some related code, bestie, there's a whole friend group 👯‍♀️

• Kernel file ./security/selinux/netnode.c — that's where the family lives 🏠
• sel_netnode_hashfn_ipv4(9) — her IPv4 sister, the way that whole family slays both stacks 💀
• sel_netnode_find(9)
• sel_netnode_insert(9)
• sel_netnode_sid_slow(9)
• sel_netnode_sid(9)
• sel_netnode_flush(9)

fr fr, read all of them, you'll be so glad you did 🧚

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ngl there's no scary warnings here — she hashes and goes home. no undefined behaviour jumpscare, no deprecated drama, we love a low-maintenance queen 🙈

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so that's the page!! brought to you by the folks over in ./security/selinux (that's the source/version, mwah 😘) and dated October 2026 — mark your calendars bestie, the future is now ⭐💜 stay hydrated, hash responsibly, and don't forget to check your buckets 🍓✨