iptfs_user_init(9)

✨ NAME ✨

okay so bestie, this page is iptfs_user_init(9) from the Kernel API Manual, and it is literally here to initialize the SA with IPTFS options from netlink. That's the whole assignment: SA setup, IPTFS options, netlink vibes. periodt. 💅

🦋 SYNOPSIS 🦋

The signature, exactly as written, no cap:

int iptfs_user_init (struct net *net , struct xfrm_state *x , struct
       nlattr **attrs , struct netlink_ext_ack *extack );

💅 ARGUMENTS 💅

• net — the net data. that's the vibe, bestie. 🫶
• x — the xfrm state. iconic. ✨
• attrs — netlink attributes. yes ma'am. 🎀
• extack — extack return data. keeping it real. 💖

🌸 RETURN 🌸

Returns 0 on success or a negative error code on failure. so it's either a slay or a little negative-error-code moment. 😭✨

👑 SEE ALSO 👑

First up, the kernel file: ./net/xfrm/xfrm_iptfs.c. Then the whole reference squad, in order:

• IPTFS_DEFAULT_DROP_TIME_USECS(9)
• IPTFS_DEFAULT_REORDER_WINDOW(9)
• IPTFS_DEFAULT_INIT_DELAY_USECS(9)
• IPTFS_DEFAULT_MAX_QUEUE_SIZE(9)
• struct xfrm_iptfs_config(9)
• struct xfrm_iptfs_data(9)
• iptfs_alloc_skb(9)
• iptfs_skb_head_to_frag(9)
• struct iptfs_skb_frag_walk(9)
• iptfs_skb_prepare_frag_walk(9)
• iptfs_skb_can_add_frags(9)
• iptfs_skb_add_frags(9)
• iptfs_pskb_add_frags(9)
• iptfs_pskb_extract_seq(9)
• iptfs_input_save_runt(9)
• __iptfs_iphlen(9)
• __iptfs_iplen(9)
• iptfs_complete_inner_skb(9)
• iptfs_reassem_abort(9)
• iptfs_reassem_done(9)
• iptfs_reassem_cont(9)
• iptfs_input_ordered(9)
• iptfs_drop_timer(9)
• iptfs_input(9)
• iptfs_enqueue(9)
• iptfs_copy_create_frag(9)
• iptfs_copy_create_frags(9)
• iptfs_first_skb(9)
• iptfs_encap_add_ipv4(9)
• iptfs_encap_add_ipv6(9)
• iptfs_prepare_output(9)
• __iptfs_get_inner_mtu(9)
• iptfs_get_inner_mtu(9)

source/version vibes from ./net/xfrm, dated October 2026, page iptfs_user_init(9) — catch you in the kernel bestie, stay hydrated and init those SAs 💖🦋🎀