caam_process_blob(9)

💅 caam_process_blob — the kernel API manual, bestie edition

okay so real quick, the manual name is caam_process_blob(9) and this whole page is our little study session about it. it's the "encapsulate or decapsulate blob" girlie 🫶 like yes, that's literally the job. blobs in, blobs out, no cap.

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✨ SYNOPSIS ✨

int caam_process_blob (struct caam_blob_priv *priv , struct
caam_blob_info *info , bool encap );

that's the whole signature, copy it exactly, don't freestyle it 💀

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🎀 ARGUMENTS 🎀

• priv — the instance you got back from caam_blob_gen_init. like, the one it handed you. you can't just make one up, bestie 😭
• info — a pointer to the blobbing info. it's the whole describe-the-situation struct: it covers the key, the blob, and the key modifier buffers. all three, all described, all in there 🌸
• encap — true when you want encapsulation, false when you want decapsulation. that's it. that's the whole vibe check: true = wrap it up, false = unwrap it 🎁

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⭐ RETURN ⭐

returns 0 on success and — listen — on success it also sets info->output_len. both things. together. iconic 💅

otherwise? some negative error code. not zero. negative. so if you're out here checking for truthiness you're gonna have a bad time 🙈

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🦋 SEE ALSO 🦋

• Kernel file ./include/soc/fsl/caam-blob.h — yeah, the header, go read it, it's giving source of truth ✨
• struct caam_pkey_info(9)
• struct caam_blob_info(9)
• caam_blob_gen_init(9)
• caam_blob_gen_exit(9)
• caam_encap_blob(9)
• caam_decap_blob(9)

like, read the friends too, they all hang out together, iykyk 💜

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ngl the order here is exactly the order above — i did not shuffle anyone, don't come for me 😤

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and that's the page!! mwah 🍓 source/version lives at ./include/soc/fsl, dated October 2026, and yes we are still thinking about it. periodt. 👑