IPTFS_DEFAUL..._DELAY_USECS(9)

💅 IPTFS_DEFAULT_INIT_DELAY_USECS(9) 💅

okay so bestie, welcome to the Kernel API Manual — this one's a page about IPTFS_DEFAULT_INIT_DELAY_USECS, and honestly? It's a whole vibe. Short, sweet, and it lowkey controls how long your output queue sits there before anyone touches it 🎀

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✨ NAME ✨

IPTFS_DEFAULT_INIT_DELAY_USECS — the default initial output delay, no cap 💖

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🦋 SYNOPSIS 🦋

IPTFS_DEFAULT_INIT_DELAY_USECS

That's it. That's the whole synopsis. Iconic behaviour, honestly 👑

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🌸 DESCRIPTION 🌸

okay so listen. The initial output delay is literally the amount of time that passes prior to servicing the output queue after queueing the first packet on said queue 🫶

And the way this works? It applies anytime the output queue was previously empty ✨ Like, every single time the queue goes from empty to "oop, there's a packet now," the clock starts ticking and this delay is what decides how long it chills before it gets serviced.

Default is 0.

Zero. Zilch. No delay. Main character energy 💅

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🔥 SEE ALSO 🔥

Kernel file ./net/xfrm/xfrm_iptfs.c — plus literally the whole friend group:

• IPTFS_DEFAULT_DROP_TIME_USECS(9)
• IPTFS_DEFAULT_REORDER_WINDOW(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)
• iptfs_user_init(9)

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💖 that's the whole page, bestie 💖

this little icon came straight out of ./net/xfrm, dated October 2026, and yes it's still called IPTFS_DEFAUL..._DELAY_USECS(9) because the title got truncated and we're choosing to love that for it 😭🫶 go read the actual source, ily, bye 🧚✨