STRUCT AF_ALG_ASYNC_REQ(9)

💖 NAME

okay bestie, welcome to the struct af_alg_async_req(9) page from the Kernel API Manual ✨ this one is literally the definition of crypto request — no cap, that’s the whole NAME vibe 💅

🌸 SYNOPSIS

struct af_alg_async_req {
    struct sock *sk;
    struct af_alg_rsgl first_rsgl;
    struct af_alg_rsgl *last_rsgl;
    struct list_head rsgl_list;
    struct scatterlist *tsgl;
    unsigned int tsgl_entries;
    unsigned int outlen;
    unsigned int areqlen;
    union {
      struct aead_request aead_req;
      struct skcipher_request skcipher_req;
    } cra_u;
 };

🎀 Members

• sk — the socket this request is associated with 🫶
• first_rsgl — first RX SG ✨
• last_rsgl — pointer to last RX SG 👑
• rsgl_list — tracks RX SGs 💖
• tsgl — private, per request TX SGL of buffers to process 🔥
• tsgl_entries — number of entries in priv. TX SGL 🌸
• outlen — number of output bytes generated by crypto op ⭐
• areqlen — length of this data structure 💫
• cra_u — cipher request, aka the union holding aead_req and skcipher_req 🦋

🦋 SEE ALSO

• Kernel file ./include/crypto/if_alg.h
• struct af_alg_ctx(9)
• af_alg_sndbuf(9)
• af_alg_writable(9)
• af_alg_rcvbuf(9)
• af_alg_readable(9)

mwah 💋 this page’s source/version home is ./include/crypto, and it’s dated October 2026 — that’s the whole footer, bestie 🫶