STRUCT OCS_HCU_RCTX(9)

💖 struct ocs_hcu_rctx(9) 💖

okay so bestie, this is the Kernel API Manual page for struct ocs_hcu_rctx, and it’s literally the context for the request. No cap.

✨ NAME ✨

struct ocs_hcu_rctx — Context for the request.

🦋 SYNOPSIS 🦋

struct ocs_hcu_rctx {
    struct ocs_hcu_dev      *hcu_dev;
    u32 flags;
    enum ocs_hcu_algo       algo;
    size_t blk_sz;
    size_t dig_sz;
    struct ocs_hcu_dma_list *dma_list;
    struct ocs_hcu_hash_ctx hash_ctx;
    u8 buffer[2 * SHA512_BLOCK_SIZE];
    size_t buf_cnt;
    dma_addr_t buf_dma_addr;
    size_t buf_dma_count;
    struct scatterlist      *sg;
    unsigned int            sg_data_total;
    unsigned int            sg_data_offset;
    unsigned int            sg_dma_nents;
    unsigned int            nents;
 };

🎀 Members 🎀

• hcu_dev — the OCS HCU device that’s gonna be used to service the request 💅
• flags — flags that keep track of the request status, bestie ✨
• algo — the algorithm to use for the request, periodt 🔥
• blk_sz — block size of the transformation / request 🌸
• dig_sz — digest size of the transformation / request 🦋
• dma_list — OCS DMA linked list, iconic 🎀
• hash_ctx — OCS HCU hashing context 💜
• buffer — buffer to store: partial block of data and SW HMAC artifacts (ipad, opad, etc.) 👑
• buf_cnt — number of bytes currently stored in the buffer 🍓
• buf_dma_addr — the DMA address of buffer (when mapped) ✨
• buf_dma_count — the number of bytes in buffer currently DMA-mapped 🌈
• sg — head of the scatterlist entries containing data 🫶
• sg_data_total — total data in the SG list at any time 💫
• sg_data_offset — offset into the data of the current individual SG node 🧚
• sg_dma_nents — number of sg entries mapped in dma_list 💀
• nents — number of entries in the scatterlist ⭐

🌈 SEE ALSO 🌈

• Kernel file ./drivers/crypto/intel/keembay/keembay-ocs-hcu-core.c — also peep struct ocs_hcu_ctx(9), struct ocs_hcu_drv(9) iykyk 💚

Cute sign-off: the footer’s source/version bit is ./drivers/crypto/intel/keembay, the date is October 2026, and the title tag is struct ocs_hcu_rctx(9) — slay and goodbye, bestie 💅✨