nx_walk_and_build(9)

🎀 nx_walk_and_build(9) 🎀

okay bestie, this page lives in the Kernel API Manual, and it's giving “walk a linux scatterlist and build an nx scatterlist” energy 💅✨ no cap.

🌸 NAME 🌸

nx_walk_and_build — walk a linux scatterlist and build an nx scatterlist. That's literally its whole job, and it ate.

✨ SYNOPSIS ✨

the signature, verbatim, because we do not mess with function signatures in this house:

       struct nx_sg * nx_walk_and_build (struct nx_sg *nx_dst , unsigned int
       sglen , struct scatterlist *sg_src , unsigned int start , unsigned int
       *src_len );

🎀 ARGUMENTS 🎀

okay so here's the cast of parameters — every one of them matters, no skipping:

• nx_dst — pointer to the first nx_sg element to write.
• sglen — max number of nx_sg entries we're allowed to write.
• sg_src — pointer to the source linux scatterlist to walk.
• start — number of bytes to fast-forward past at the beginning of sg_src.
• src_len — number of bytes to walk in sg_src.

🦋 SEE ALSO 🦋

if you wanna keep reading, the manual points you at Kernel file ./drivers/crypto/nx/nx.c plus this whole friend group:

• nx_hcall_sync(9)
• nx_build_sg_list(9)
• trim_sg_list(9)
• nx_build_sg_lists(9)
• nx_ctx_init(9)
• nx_of_init(9)
• nx_register_algs(9)
• nx_crypto_ctx_init(9)
• nx_crypto_ctx_exit(9)

byeeee 🫶💖 — source/version: ./drivers/crypto/nx; date: October 2026; page: nx_walk_and_build(9).