s5p_hash_copy_sgs(9)

💖 NAME 💖

okay so bestie, welcome to the s5p_hash_copy_sgs(9) page from the Kernel API Manual 💅 this one is literally s5p_hash_copy_sgs — copy request's bytes into new buffer. no cap, that’s the whole assignment ✨

🌸 SYNOPSIS 🌸

here’s the signature, and yes, keep it exactly like this:

int s5p_hash_copy_sgs (struct s5p_hash_reqctx *ctx , struct scatterlist
       *sg , unsigned int new_len );

🎀 ARGUMENTS 🎀

• ctx — request context. it’s giving “the request’s main character energy” 🫶
• sg — source scatterlist request. the source tea being served, iykyk 💅
• new_len — number of bytes to process from sg. count ’em, bestie 🔢

🦋 DESCRIPTION 🦋

So here’s the deal: this function allocates a new buffer and copies data for HASH into it. If there was xmit_buf filled, copy it first, then copy data from sg into it. Then prepare one sgl[0] with allocated buffer. After that, set bit in dd->hash_flag so we can free it after irq ends processing. literally that’s the whole vibe check ✅

🌈 SEE ALSO 🌈

go be nosy in these related pages, fr fr:

• 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_sg_lists(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 💋 this page is from ./drivers/crypto, dated October 2026, and it’s all about s5p_hash_copy_sgs(9) — bye bestie, go slay some crypto code 🧚💜