sk_filter_release(9)

💅 sk_filter_release(9) — like, the kernel API manual, bestie 🎀

okay so this is sk_filter_release, straight out of the Kernel API Manual crew. it's a lil function, it does one job, and honestly? it does it flawlessly. let's get into it 💖

---

✨ NAME ✨

sk_filter_release — release a socket filter 🦋

like... that's it. that's the whole personality. it releases a socket filter. iconic behavior tbh.

---

🌸 SYNOPSIS 🌸

void sk_filter_release (struct sk_filter *fp );

ngl bestie, the return type is void — as in, it gives you nothing back. no status code, no little treat, no "hey it worked ✨". it just does the thing and dips. and the formatting of the params? (struct sk_filter *fp ); — yes, with that lil space before the closing paren. we keep it exactly like that because that's how the kernel rolls 💀

---

🎀 ARGUMENTS 🎀

• fp — the filter to remove, bestie. that's the one. the whole entire thing this function is about to gently (or not so gently) escort out of the building 👋

---

💜 DESCRIPTION 💜

okay so here's the vibe: remove a filter from a socket and release its resources. periodt. 👑

that's the whole description. two clauses. very main-character-energy of it — it says exactly what it needs to say and doesn't ramble like me in the group chat at 2am 😭

so like, fp is the filter, it gets pulled off the socket, and all the resources it was holding onto? freed. no leaks, no loose ends, no "oopsie i forgot to clean up" energy. the way that this function takes care of business is genuinely so hot of it 🔥

💀 reminder that it's void — it is NOT gonna tell you how it went. it just releases and leaves. you're not getting a report card, bestie.

---

🫶 SEE ALSO 🫶

the whole friend group fr fr — these are the manual pages you should also go read, no cap:

• Kernel file ./net/core/filter.c — yes, the source file itself is in the SEE ALSO like a celeb cameo 🌟
• sk_filter_trim_cap(9)
• bpf_convert_filter(9)
• bpf_check_classic(9)
• sk_filter_release_rcu(9)
• bpf_prog_create(9)
• bpf_prog_create_from_user(9)
• sk_attach_filter(9)
• xdp redirect(9)
• bpf_skb_meta_pointer(9)
• bpf_dynptr_from_skb_meta(9)
• bpf_xdp_pull_data(9)
• bpf_icmp_send(9)

🦋 iykyk but xdp redirect(9) has a space in it, not an underscore — that's not me being sloppy, that's literally how it's written. we copy, we don't correct 💅

---

🌈 the cute lil sign-off 🌈

and that's the tea, bestie 🍓 this absolute gem lives over in ./net/core, and the version/date stamp on it is October 2026 — so mark your calendars, it's giving very much "fresh off the kernel presses" energy ✨💖

now go release those filters responsibly, mwah 😘🧚‍♀️