cnstr_shdsc_rfc4543_encap(9)

📦 version 7.3.1, in nixpkgs unstable

💅 cnstr_shdsc_rfc4543_encap — a Kernel API Manual moment ✨

okay so bestie, welcome to the Kernel API Manual for cnstr_shdsc_rfc4543_encap 🌸 this is the one about building an IPSec ESP gmac encapsulation shared descriptor, and it is, and I cannot stress this enough, non-protocol. no cap.

✨ NAME ✨

cnstr_shdsc_rfc4543_encap — IPSec ESP gmac encapsulation shared descriptor (non-protocol). literally what it says on the tin 🎀

🦋 SYNOPSIS 🦋

void cnstr_shdsc_rfc4543_encap (u32 * const desc , struct alginfo *cdata
, unsigned int ivsize , unsigned int icvsize , const bool is_qi );

she takes five things and returns void. main character energy honestly 👑

💖 ARGUMENTS 💖

  • desc — pointer to the buffer used for descriptor construction. like, this is the canvas, the construction site, the whole vibe 🏗️
  • cdata — pointer to block cipher transform definitions. valid algorithm values are OP_ALG_ALGSEL_AES ANDed with OP_ALG_AAI_GCM — that exact combo, don't get creative with it 🔥
  • ivsize — initialization vector size. the IV's whole size situation 🌈
  • icvsize — integrity check value (ICV) size, and it can be truncated or full. both are valid, she's flexible like that 🫶
  • is_qi — true when called from caam/qi. so like, are we in the qi house or not 🏠

🎀 SEE ALSO 🎀

kernel file ./drivers/crypto/caam/caamalg_desc.c — that's where she lives, go say hi 👋

and the whole friend group, omg the friend group:

all iconic, all linked, periodt 💅

ngl bestie this is the encap one — if you were looking for the decap twin, she's literally right there in the list above, cnstr_shdsc_rfc4543_decap(9) 🙈

okay that's the whole page!! sourced straight from ./drivers/crypto/caam, dated October 2026, version era of the same name cnstr_shdsc_rfc4543_encap(9) ⭐ byeee, go construct some descriptors, drink water, ily 🍓🧚💜

📦 where this page comes from