STRUCT TIPC_CRYPTO(9)

📦 version 7.3.1, in nixpkgs unstable

💖 struct tipc_crypto(9) 💖

okay bestie, welcome to the Kernel API Manual — we're doing struct tipc_crypto, the TIPC TX/RX crypto structure, and honestly? she's a whole vibe. ✨

🌸 NAME 🌸

struct tipc_crypto — TIPC TX/RX crypto structure. no notes, that's literally her job description. 💅

🦋 SYNOPSIS 🦋

okay so here's the full shape of her, so you know exactly what you're working with:

struct tipc_crypto {
    struct net *net;
    struct tipc_node *node;
    struct tipc_aead *aead[KEY_MAX + 1];
    atomic_t peer_rx_active;
    u16 key_gen;
    struct tipc_key key;
    u8 skey_mode;
    struct tipc_aead_key *skey;
    struct workqueue_struct *wq;
    struct delayed_work work;
  #define KEY_DISTR_SCHED         1;
  #define KEY_DISTR_COMPL         2;
    atomic_t key_distr;
    u32 rekeying_intv;
    struct tipc_crypto_stats __percpu *stats;
    char name[48];
    unsigned long timer1;
    unsigned long timer2;
    union {
      struct {
        u8 working:1;
        u8 key_master:1;
        u8 legacy_user:1;
        u8 nokey: 1;
      };
      u8 flags;
    };
    spinlock_t lock;
 };

like, look at that struct. she ate. 🔥

🎀 MEMBERS 🎀

okay now the main character energy part — every single member, explained, no skipping, periodt:

  • net — a struct net. that's the network namespace she's living in, bestie.
  • node — the TIPC node (RX). 🫶
  • aead — array of pointers to AEAD keys for encryption/decryption. the glow-up toolbox, lowkey.
  • peer_rx_active — replicated peer RX active key index. say that five times fast, i dare you. 😭
  • key_gen — TX/RX key generation.
  • key — the key states.
  • skey_mode — session key's mode.
  • skey — received session key.
  • wq — common workqueue on TX crypto. she's got a queue and she's got scheduling, iykyk.
  • work — delayed work sched for TX/RX.
  • key_distr — key distributing state.
  • rekeying_intv — rekeying interval (in minutes). yes, minutes, not seconds, don't come for me. ⏳
  • stats — the crypto statistics. numbers girlie. 📊
  • name — the crypto name.
  • timer1 — general timer 1 (jiffies).
  • timer2 — general timer 2 (jiffies). two timers, two moods. ⭐
  • {unnamed_union} — anonymous. she's mysterious. 🙈
  • {unnamed_struct} — anonymous. also mysterious. double mystery.
  • working — the crypto is working or not. honestly same, some days.
  • key_master — flag indicates if master key exists. 👑
  • legacy_user — flag indicates if a peer joins w/o master key (for bwd comp.). bwd comp. = backward compatibility, for the old-school crowd. 💀
  • nokey — no key indication.
  • flags — combined flags field.
  • lock — tipc_key lock. 🔒 do not forget to lock her, fr fr.
ngl bestie, those two anonymous union/struct members are just vibing there unnamed — that's not a typo, that's literally how she's built.

🧚 SEE ALSO 🧚

Kernel file ./net/tipc/crypto.c, plus her whole friend group — every single one, because we don't leave anyone out:

and that's the page, bestie!! 🫶 she comes from the kernel source at ./net/tipc, dated October 2026, and honestly? iconic. go forth and encrypt responsibly. 🌈💜🎀

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