From 34ff636f322c6d5e4f0a52338fa63a7dff09a495 Mon Sep 17 00:00:00 2001 From: Joel Fernandes Date: Sat, 18 Jul 2026 13:15:36 -0400 Subject: scftorture: Count single_rpc offline failures in statistics output scf_torture_stats_print() aggregates each invoker thread's counters into a local scf_statistics structure before printing, but the n_single_rpc_ofl field is missing from the aggregation loop. As a result, the "single_rpc_ofl" value printed in the statistics line is always zero, even when smp_call_function_single() invocations for the RPC test have failed due to offline CPUs and been counted by the invoker threads. Add the missing accumulation so that the printed value reflects the actual counts. Signed-off-by: Joel Fernandes Signed-off-by: Paul E. McKenney --- crypto/cbc.c | 187 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 187 insertions(+) create mode 100644 crypto/cbc.c (limited to 'crypto/cbc.c') diff --git a/crypto/cbc.c b/crypto/cbc.c new file mode 100644 index 000000000..ed3df6246 --- /dev/null +++ b/crypto/cbc.c @@ -0,0 +1,187 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * CBC: Cipher Block Chaining mode + * + * Copyright (c) 2006-2016 Herbert Xu + */ + +#include +#include +#include +#include +#include +#include + +static int crypto_cbc_encrypt_segment(struct crypto_lskcipher *tfm, + const u8 *src, u8 *dst, unsigned nbytes, + u8 *iv) +{ + unsigned int bsize = crypto_lskcipher_blocksize(tfm); + + for (; nbytes >= bsize; src += bsize, dst += bsize, nbytes -= bsize) { + crypto_xor(iv, src, bsize); + crypto_lskcipher_encrypt(tfm, iv, dst, bsize, NULL); + memcpy(iv, dst, bsize); + } + + return nbytes; +} + +static int crypto_cbc_encrypt_inplace(struct crypto_lskcipher *tfm, + u8 *src, unsigned nbytes, u8 *oiv) +{ + unsigned int bsize = crypto_lskcipher_blocksize(tfm); + u8 *iv = oiv; + + if (nbytes < bsize) + goto out; + + do { + crypto_xor(src, iv, bsize); + crypto_lskcipher_encrypt(tfm, src, src, bsize, NULL); + iv = src; + + src += bsize; + } while ((nbytes -= bsize) >= bsize); + + memcpy(oiv, iv, bsize); + +out: + return nbytes; +} + +static int crypto_cbc_encrypt(struct crypto_lskcipher *tfm, const u8 *src, + u8 *dst, unsigned len, u8 *iv, u32 flags) +{ + struct crypto_lskcipher **ctx = crypto_lskcipher_ctx(tfm); + bool final = flags & CRYPTO_LSKCIPHER_FLAG_FINAL; + struct crypto_lskcipher *cipher = *ctx; + int rem; + + if (src == dst) + rem = crypto_cbc_encrypt_inplace(cipher, dst, len, iv); + else + rem = crypto_cbc_encrypt_segment(cipher, src, dst, len, iv); + + return rem && final ? -EINVAL : rem; +} + +static int crypto_cbc_decrypt_segment(struct crypto_lskcipher *tfm, + const u8 *src, u8 *dst, unsigned nbytes, + u8 *oiv) +{ + unsigned int bsize = crypto_lskcipher_blocksize(tfm); + const u8 *iv = oiv; + + if (nbytes < bsize) + goto out; + + do { + crypto_lskcipher_decrypt(tfm, src, dst, bsize, NULL); + crypto_xor(dst, iv, bsize); + iv = src; + + src += bsize; + dst += bsize; + } while ((nbytes -= bsize) >= bsize); + + memcpy(oiv, iv, bsize); + +out: + return nbytes; +} + +static int crypto_cbc_decrypt_inplace(struct crypto_lskcipher *tfm, + u8 *src, unsigned nbytes, u8 *iv) +{ + unsigned int bsize = crypto_lskcipher_blocksize(tfm); + u8 last_iv[MAX_CIPHER_BLOCKSIZE]; + + if (nbytes < bsize) + goto out; + + /* Start of the last block. */ + src += nbytes - (nbytes & (bsize - 1)) - bsize; + memcpy(last_iv, src, bsize); + + for (;;) { + crypto_lskcipher_decrypt(tfm, src, src, bsize, NULL); + if ((nbytes -= bsize) < bsize) + break; + crypto_xor(src, src - bsize, bsize); + src -= bsize; + } + + crypto_xor(src, iv, bsize); + memcpy(iv, last_iv, bsize); + +out: + return nbytes; +} + +static int crypto_cbc_decrypt(struct crypto_lskcipher *tfm, const u8 *src, + u8 *dst, unsigned len, u8 *iv, u32 flags) +{ + struct crypto_lskcipher **ctx = crypto_lskcipher_ctx(tfm); + bool final = flags & CRYPTO_LSKCIPHER_FLAG_FINAL; + struct crypto_lskcipher *cipher = *ctx; + int rem; + + if (src == dst) + rem = crypto_cbc_decrypt_inplace(cipher, dst, len, iv); + else + rem = crypto_cbc_decrypt_segment(cipher, src, dst, len, iv); + + return rem && final ? -EINVAL : rem; +} + +static int crypto_cbc_create(struct crypto_template *tmpl, struct rtattr **tb) +{ + struct lskcipher_instance *inst; + int err; + + inst = lskcipher_alloc_instance_simple(tmpl, tb); + if (IS_ERR(inst)) + return PTR_ERR(inst); + + err = -EINVAL; + if (!is_power_of_2(inst->alg.co.base.cra_blocksize)) + goto out_free_inst; + + if (inst->alg.co.statesize) + goto out_free_inst; + + inst->alg.encrypt = crypto_cbc_encrypt; + inst->alg.decrypt = crypto_cbc_decrypt; + + err = lskcipher_register_instance(tmpl, inst); + if (err) { +out_free_inst: + inst->free(inst); + } + + return err; +} + +static struct crypto_template crypto_cbc_tmpl = { + .name = "cbc", + .create = crypto_cbc_create, + .module = THIS_MODULE, +}; + +static int __init crypto_cbc_module_init(void) +{ + return crypto_register_template(&crypto_cbc_tmpl); +} + +static void __exit crypto_cbc_module_exit(void) +{ + crypto_unregister_template(&crypto_cbc_tmpl); +} + +module_init(crypto_cbc_module_init); +module_exit(crypto_cbc_module_exit); + +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("CBC block cipher mode of operation"); +MODULE_ALIAS_CRYPTO("cbc"); -- cgit v1.3.1