This patch is a try to implement a generic crypto driver statistics. The goal is to have an "ifconfig" for crypto device. Some driver tried to implement this via a debugfs interface. This serie do it directly in the crypto API and give access to stats via the crypto_user(netlink) API. Then an userspace tool will collect information via netlink. Note that this userspace tool is heavily copied from libkcapi and if Stephan Mueller agree, I will made a PR for adding getstat to it unless tools/crypto is the good place for it. Example of output: pkcs1pad(rsa-sun8i-ce,sha1) Akcipher Encrypt: 0 bytes: 0 Decrypt: 0 bytes: 0 Sign: 0 Verify: 5 Errors: 0 cryptd(__xts-aes-ce) cipher Encrypt: 0 bytes: 0 Decrypt: 0 bytes: 0 Errors: 0 xts-aes-ce cipher Encrypt: 17 bytes: 4384 Decrypt: 17 bytes: 4384 Errors: 0 cryptd(__ctr-aes-ce) cipher Encrypt: 0 bytes: 0 Decrypt: 0 bytes: 0 Errors: 0 ctr-aes-ce cipher Encrypt: 19 bytes: 5551 Decrypt: 19 bytes: 5551 Errors: 0 cryptd(__cbc-aes-ce) cipher Encrypt: 0 bytes: 0 Decrypt: 0 bytes: 0 Errors: 0 cbc-aes-ce cipher Encrypt: 19 bytes: 3040 Decrypt: 19 bytes: 3040 Errors: 0 cryptd(__ecb-aes-ce) cipher Encrypt: 0 bytes: 0 Decrypt: 0 bytes: 0 Errors: 0 ecb-aes-ce cipher Encrypt: 14 bytes: 2624 Decrypt: 14 bytes: 2624 Errors: 0 cbcmac-aes-ce Hash Hash: 20 bytes: 1244 Errors: 0 xcbc-aes-ce Hash Hash: 28 bytes: 543 Errors: 0 cmac-aes-ce Hash Hash: 36 bytes: 1472 Errors: 0 __xts-aes-ce cipher Encrypt: 17 bytes: 4384 Decrypt: 17 bytes: 4384 Errors: 0 ctr-aes-ce cipher Encrypt: 19 bytes: 5551 Decrypt: 19 bytes: 5551 Errors: 0 __ctr-aes-ce cipher Encrypt: 19 bytes: 5551 Decrypt: 19 bytes: 5551 Errors: 0 __cbc-aes-ce cipher Encrypt: 19 bytes: 3040 Decrypt: 19 bytes: 3040 Errors: 0 __ecb-aes-ce cipher Encrypt: 14 bytes: 2624 Decrypt: 14 bytes: 2624 Errors: 0 rsa-sun8i-ce Akcipher Encrypt: 7 bytes: 232 Decrypt: 6 bytes: 1152 Sign: 0 Verify: 5 Errors: 0 sun8i_ce_rng RNG Seed: 0 Generate: 0 bytes: 0 Errors: 0 ecb(des3_ede-generic) cipher Encrypt: 24 bytes: 4584 Decrypt: 24 bytes: 4584 Errors: 0 ecb-des3-sun8i-ce cipher Encrypt: 18 bytes: 3072 Decrypt: 18 bytes: 3072 Errors: 0 cbc(des3_ede-generic) cipher Encrypt: 14 bytes: 5104 Decrypt: 14 bytes: 5104 Errors: 0 aes-ce cipher Encrypt: 0 bytes: 0 Decrypt: 0 bytes: 0 Errors: 0 des3_ede-generic cipher Encrypt: 0 bytes: 0 Decrypt: 0 bytes: 0 Errors: 0 des-generic cipher Encrypt: 0 bytes: 0 Decrypt: 0 bytes: 0 Errors: 0 aes-arm64 cipher Encrypt: 0 bytes: 0 Decrypt: 0 bytes: 0 Errors: 0 crc32c-arm64-ce Hash Hash: 92 bytes: 20649 Errors: 0 cbc-des3-sun8i-ce cipher Encrypt: 10 bytes: 3488 Decrypt: 10 bytes: 3488 Errors: 0 crc32-arm64-ce Hash Hash: 92 bytes: 20649 Errors: 0 ecb-aes-sun8i-ce cipher Encrypt: 18 bytes: 3168 Decrypt: 18 bytes: 3168 Errors: 0 cbc-aes-sun8i-ce cipher Encrypt: 24 bytes: 3712 Decrypt: 24 bytes: 3712 Errors: 0 sha256-ce Hash Hash: 26 bytes: 8860 Errors: 0 sha224-ce Hash Hash: 26 bytes: 8860 Errors: 0 cts(cbc-aes-sun8i-ce) cipher Encrypt: 24 bytes: 956 Decrypt: 24 bytes: 956 Errors: 0 sha224-arm64-neon Hash Hash: 26 bytes: 8860 Errors: 0 sha256-arm64-neon Hash Hash: 26 bytes: 8860 Errors: 0 sha224-arm64 Hash Hash: 26 bytes: 8860 Errors: 0 sha256-arm64 Hash Hash: 26 bytes: 8860 Errors: 0 ctr-aes-sun8i-ce cipher Encrypt: 24 bytes: 6738 Decrypt: 24 bytes: 6738 Errors: 0 sha1-ce Hash Hash: 28 bytes: 9191 Errors: 0 ecdh-generic KPP Setsecret: 4 Generate public key: 3 Compute_shared_secret: 4 Errors: 0 ghash-generic Hash Hash: 32 bytes: 4358 Errors: 0 jitterentropy_rng RNG Seed: 0 Generate: 1 bytes: 48 Errors: 0 drbg_nopr_hmac_sha256 RNG Seed: 5 Generate: 9 bytes: 1056 Errors: 0 drbg_nopr_hmac_sha512 RNG Seed: 0 Generate: 0 bytes: 0 Errors: 0 drbg_nopr_hmac_sha384 RNG Seed: 0 Generate: 0 bytes: 0 Errors: 0 drbg_nopr_hmac_sha1 RNG Seed: 0 Generate: 0 bytes: 0 Errors: 0 drbg_pr_hmac_sha256 RNG Seed: 4 Generate: 8 bytes: 1024 Errors: 0 drbg_pr_hmac_sha512 RNG Seed: 0 Generate: 0 bytes: 0 Errors: 0 drbg_pr_hmac_sha384 RNG Seed: 0 Generate: 0 bytes: 0 Errors: 0 drbg_pr_hmac_sha1 RNG Seed: 0 Generate: 0 bytes: 0 Errors: 0 crct10dif-generic Hash Hash: 24 bytes: 19893 Errors: 0 crc32c-generic Hash Hash: 92 bytes: 20649 Errors: 0 aes-generic cipher Encrypt: 0 bytes: 0 Decrypt: 0 bytes: 0 Errors: 0 sha224-generic Hash Hash: 26 bytes: 8860 Errors: 0 sha256-generic Hash Hash: 26 bytes: 8860 Errors: 0 sha1-generic Hash Hash: 28 bytes: 9191 Errors: 0 digest_null-generic Hash Hash: 0 bytes: 0 Errors: 0 compress_null-generic Compress Compress: 0 bytes: 0 Decompress: 0 bytes: 0 Errors: 0 ecb-cipher_null cipher Encrypt: 0 bytes: 0 Decrypt: 0 bytes: 0 Errors: 0 cipher_null-generic cipher Encrypt: 0 bytes: 0 Decrypt: 0 bytes: 0 Errors: 0 rsa-generic Akcipher Encrypt: 17 bytes: 2832 Decrypt: 9 bytes: 1920 Sign: 0 Verify: 36 Errors: 0 Futur possible additions: - Add a "number of needed fallback" statistics. - statistics for maximum request size Please let me know your opinions about it Regards Changes since v2: - added documentation on new struct crypto_alg members. Changes since v1: - Do not use anymore CRYPTO_MSG_GETALG and added a dedicated CRYPTO_MSG_GETSTAT Changes since RFC: - Use cryptouser(netlink) instead of /sys - Use atomic_t instead of unsigned long - moved stat code into dedicated inline function - spelling fixes Corentin Labbe (2): crypto: Implement a generic crypto statistics crypto: tools: Add cryptostat userspace crypto/Kconfig | 11 + crypto/Makefile | 1 + crypto/ahash.c | 21 +- crypto/algapi.c | 8 + crypto/{crypto_user.c => crypto_user_base.c} | 9 +- crypto/crypto_user_stat.c | 463 +++++++++++++++++++++++++++ crypto/rng.c | 1 + include/crypto/acompress.h | 38 ++- include/crypto/aead.h | 51 ++- include/crypto/akcipher.h | 76 ++++- include/crypto/hash.h | 32 +- include/crypto/internal/cryptouser.h | 8 + include/crypto/kpp.h | 51 ++- include/crypto/rng.h | 29 +- include/crypto/skcipher.h | 44 ++- include/linux/crypto.h | 110 ++++++- include/uapi/linux/cryptouser.h | 52 +++ tools/crypto/getstat.c | 294 +++++++++++++++++ 18 files changed, 1264 insertions(+), 35 deletions(-) rename crypto/{crypto_user.c => crypto_user_base.c} (97%) create mode 100644 crypto/crypto_user_stat.c create mode 100644 include/crypto/internal/cryptouser.h create mode 100644 tools/crypto/getstat.c -- 2.16.4