s5p_hash_copy_sg_lists(9)

🎀 s5p_hash_copy_sg_lists(9) 🎀

okay bestie, this is the Kernel API Manual page for s5p_hash_copy_sg_lists(9), and it's giving "copy sg list and make fixes in copy" energy. no cap, we're keeping every arg and every reference. 💅

🌸 NAME 🌸

s5p_hash_copy_sg_lists — copy sg list and make fixes in copy

✨ SYNOPSIS ✨

int s5p_hash_copy_sg_lists (struct s5p_hash_reqctx *ctx , struct
scatterlist *sg , unsigned int new_len );

🫶 ARGUMENTS 🫶

• ctx — request context. that's the request's little home base, periodt.
• sg — source scatterlist request. the source sg we're working from, bestie.
• new_len — number of bytes to process from sg. exactly that many bytes get processed from the source sg.

🔥 DESCRIPTION 🔥

okay so the whole vibe is: allocate a new scatterlist table, then copy the data for HASH into it. If there was xmit_buf filled, prepare it first — yes, first — and then copy page, length and offset from the source sg into it, adjusting begin and/or end for the skip offset and the hash_later value. 💖

the resulting sg table will be assigned to ctx->sg. also set the flag so we can free it after irq ends processing. that's the cleanup moment, and it matters. 🧚

🦋 SEE ALSO 🦋

go peek at these, iykyk:

• Kernel file ./drivers/crypto/s5p-sss.c
• struct samsung_aes_variant(9)
• struct s5p_aes_dev(9)
• struct s5p_hash_reqctx(9)
• struct s5p_hash_ctx(9)
• s5p_set_dma_hashdata(9)
• s5p_hash_rx(9)
• s5p_hash_read_msg(9)
• s5p_hash_write_ctx_iv(9)
• s5p_hash_write_iv(9)
• s5p_hash_copy_result(9)
• s5p_hash_dma_flush(9)
• s5p_hash_dma_enable(9)
• s5p_hash_irq_disable(9)
• s5p_hash_irq_enable(9)
• s5p_hash_set_flow(9)
• s5p_ahash_dma_init(9)
• s5p_hash_write_ctrl(9)
• s5p_hash_xmit_dma(9)
• s5p_hash_copy_sgs(9)
• s5p_hash_prepare_sgs(9)
• s5p_hash_prepare_request(9)
• s5p_hash_update_dma_stop(9)
• s5p_hash_finish(9)
• s5p_hash_finish_req(9)
• s5p_hash_handle_queue(9)
• s5p_hash_tasklet_cb(9)
• s5p_hash_enqueue(9)
• s5p_hash_update(9)
• s5p_hash_final(9)
• s5p_hash_finup(9)
• s5p_hash_init(9)
• s5p_hash_digest(9)
• s5p_hash_cra_init_alg(9)
• s5p_hash_cra_init(9)
• s5p_hash_cra_exit(9)
• s5p_hash_export(9)
• s5p_hash_import(9)

mwah 💋 — source/version: ./drivers/crypto; date: October 2026. that's the footer, bestie, and we're giving it a cute little sign-off instead of copying the line. bye 🫶