cnstr_shdsc_rfc4106_encap(9)

okay so bestie, welcome to the cnstr_shdsc_rfc4106_encap(9) page from the Kernel API Manual — this one is all about the IPSec ESP gcm encapsulation shared descriptor (non-protocol). 💖✨

🌸 NAME 🌸

cnstr_shdsc_rfc4106_encap — IPSec ESP gcm encapsulation shared descriptor (non-protocol). periodt. 💅

🎀 SYNOPSIS 🎀

void cnstr_shdsc_rfc4106_encap (u32 * const desc , struct alginfo *cdata
       , unsigned int ivsize , unsigned int icvsize , const bool is_qi );

🦋 ARGUMENTS 🦋

• desc — pointer to buffer used for descriptor construction.
• cdata — pointer to block cipher transform definitions Valid algorithm values - OP_ALG_ALGSEL_AES ANDed with OP_ALG_AAI_GCM.
• ivsize — initialization vector size.
• icvsize — integrity check value (ICV) size (truncated or full).
• is_qi — true when called from caam/qi.

✨ DESCRIPTION ✨

okay so the sequence tea is: input sequence is AAD | PTXT, and output sequence is AAD | CTXT | ICV. AAD length (assoclen), which includes the IV length, is available in Math3. no cap, that’s the whole vibe. 🫶

🔥 SEE ALSO 🔥

• Kernel file ./drivers/crypto/caam/caamalg_desc.c
• cnstr_shdsc_aead_null_encap(9)
• cnstr_shdsc_aead_null_decap(9)
• cnstr_shdsc_aead_encap(9)
• cnstr_shdsc_aead_decap(9)
• cnstr_shdsc_aead_givencap(9)
• cnstr_shdsc_gcm_encap(9)
• cnstr_shdsc_gcm_decap(9)
• cnstr_shdsc_rfc4106_decap(9)
• cnstr_shdsc_rfc4543_encap(9)
• cnstr_shdsc_rfc4543_decap(9)
• cnstr_shdsc_chachapoly(9)
• cnstr_shdsc_skcipher_encap(9)
• cnstr_shdsc_skcipher_decap(9)
• cnstr_shdsc_xts_skcipher_encap(9)
• cnstr_shdsc_xts_skcipher_decap(9)

byeee bestie, this page is sourced/versioned from ./drivers/crypto/caam and dated October 2026, and it’s literally the cnstr_shdsc_rfc4106_encap(9) page 💅✨