scftorture: Count single_rpc offline failures in statistics outputgrafted

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 <joelagnelf@nvidia.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>

1 files changed, 247 insertions, 0 deletions

diff --git a/crypto/aes.c b/crypto/aes.c
new file mode 100644
index 000000000..6bf23eb05
--- /dev/null
+++ b/crypto/aes.c
@@ -0,0 +1,247 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Crypto API support for AES block cipher
+ *
+ * Copyright 2026 Google LLC
+ */
+
+#include <crypto/aes-cbc-macs.h>
+#include <crypto/aes.h>
+#include <crypto/algapi.h>
+#include <crypto/internal/hash.h>
+#include <linux/module.h>
+
+static_assert(__alignof__(struct aes_key) <= CRYPTO_MINALIGN);
+
+static int crypto_aes_setkey(struct crypto_tfm *tfm, const u8 *in_key,
+			     unsigned int key_len)
+{
+	struct aes_key *key = crypto_tfm_ctx(tfm);
+
+	return aes_preparekey(key, in_key, key_len);
+}
+
+static void crypto_aes_encrypt(struct crypto_tfm *tfm, u8 *out, const u8 *in)
+{
+	const struct aes_key *key = crypto_tfm_ctx(tfm);
+
+	aes_encrypt(key, out, in);
+}
+
+static void crypto_aes_decrypt(struct crypto_tfm *tfm, u8 *out, const u8 *in)
+{
+	const struct aes_key *key = crypto_tfm_ctx(tfm);
+
+	aes_decrypt(key, out, in);
+}
+
+static_assert(__alignof__(struct aes_cmac_key) <= CRYPTO_MINALIGN);
+#define AES_CMAC_KEY(tfm) ((struct aes_cmac_key *)crypto_shash_ctx(tfm))
+#define AES_CMAC_CTX(desc) ((struct aes_cmac_ctx *)shash_desc_ctx(desc))
+
+static int __maybe_unused crypto_aes_cmac_setkey(struct crypto_shash *tfm,
+						 const u8 *in_key,
+						 unsigned int key_len)
+{
+	return aes_cmac_preparekey(AES_CMAC_KEY(tfm), in_key, key_len);
+}
+
+static int __maybe_unused crypto_aes_xcbc_setkey(struct crypto_shash *tfm,
+						 const u8 *in_key,
+						 unsigned int key_len)
+{
+	if (key_len != AES_KEYSIZE_128)
+		return -EINVAL;
+	aes_xcbcmac_preparekey(AES_CMAC_KEY(tfm), in_key);
+	return 0;
+}
+
+static int __maybe_unused crypto_aes_cmac_init(struct shash_desc *desc)
+{
+	aes_cmac_init(AES_CMAC_CTX(desc), AES_CMAC_KEY(desc->tfm));
+	return 0;
+}
+
+static int __maybe_unused crypto_aes_cmac_update(struct shash_desc *desc,
+						 const u8 *data,
+						 unsigned int len)
+{
+	aes_cmac_update(AES_CMAC_CTX(desc), data, len);
+	return 0;
+}
+
+static int __maybe_unused crypto_aes_cmac_final(struct shash_desc *desc,
+						u8 *out)
+{
+	aes_cmac_final(AES_CMAC_CTX(desc), out);
+	return 0;
+}
+
+static int __maybe_unused crypto_aes_cmac_digest(struct shash_desc *desc,
+						 const u8 *data,
+						 unsigned int len, u8 *out)
+{
+	aes_cmac(AES_CMAC_KEY(desc->tfm), data, len, out);
+	return 0;
+}
+
+static_assert(__alignof__(struct aes_enckey) <= CRYPTO_MINALIGN);
+#define AES_CBCMAC_KEY(tfm) ((struct aes_enckey *)crypto_shash_ctx(tfm))
+#define AES_CBCMAC_CTX(desc) ((struct aes_cbcmac_ctx *)shash_desc_ctx(desc))
+
+static int __maybe_unused crypto_aes_cbcmac_setkey(struct crypto_shash *tfm,
+						   const u8 *in_key,
+						   unsigned int key_len)
+{
+	return aes_prepareenckey(AES_CBCMAC_KEY(tfm), in_key, key_len);
+}
+
+static int __maybe_unused crypto_aes_cbcmac_init(struct shash_desc *desc)
+{
+	aes_cbcmac_init(AES_CBCMAC_CTX(desc), AES_CBCMAC_KEY(desc->tfm));
+	return 0;
+}
+
+static int __maybe_unused crypto_aes_cbcmac_update(struct shash_desc *desc,
+						   const u8 *data,
+						   unsigned int len)
+{
+	aes_cbcmac_update(AES_CBCMAC_CTX(desc), data, len);
+	return 0;
+}
+
+static int __maybe_unused crypto_aes_cbcmac_final(struct shash_desc *desc,
+						  u8 *out)
+{
+	aes_cbcmac_final(AES_CBCMAC_CTX(desc), out);
+	return 0;
+}
+
+static int __maybe_unused crypto_aes_cbcmac_digest(struct shash_desc *desc,
+						   const u8 *data,
+						   unsigned int len, u8 *out)
+{
+	aes_cbcmac_init(AES_CBCMAC_CTX(desc), AES_CBCMAC_KEY(desc->tfm));
+	aes_cbcmac_update(AES_CBCMAC_CTX(desc), data, len);
+	aes_cbcmac_final(AES_CBCMAC_CTX(desc), out);
+	return 0;
+}
+
+static struct crypto_alg alg = {
+	.cra_name = "aes",
+	.cra_driver_name = "aes-lib",
+	.cra_priority = 100,
+	.cra_flags = CRYPTO_ALG_TYPE_CIPHER,
+	.cra_blocksize = AES_BLOCK_SIZE,
+	.cra_ctxsize = sizeof(struct aes_key),
+	.cra_module = THIS_MODULE,
+	.cra_u = { .cipher = { .cia_min_keysize = AES_MIN_KEY_SIZE,
+			       .cia_max_keysize = AES_MAX_KEY_SIZE,
+			       .cia_setkey = crypto_aes_setkey,
+			       .cia_encrypt = crypto_aes_encrypt,
+			       .cia_decrypt = crypto_aes_decrypt } }
+};
+
+static struct shash_alg mac_algs[] = {
+#if IS_ENABLED(CONFIG_CRYPTO_CMAC)
+	{
+		.base.cra_name = "cmac(aes)",
+		.base.cra_driver_name = "cmac-aes-lib",
+		.base.cra_priority = 300,
+		.base.cra_blocksize = AES_BLOCK_SIZE,
+		.base.cra_ctxsize = sizeof(struct aes_cmac_key),
+		.base.cra_module = THIS_MODULE,
+		.digestsize = AES_BLOCK_SIZE,
+		.setkey = crypto_aes_cmac_setkey,
+		.init = crypto_aes_cmac_init,
+		.update = crypto_aes_cmac_update,
+		.final = crypto_aes_cmac_final,
+		.digest = crypto_aes_cmac_digest,
+		.descsize = sizeof(struct aes_cmac_ctx),
+	},
+#endif
+#if IS_ENABLED(CONFIG_CRYPTO_XCBC)
+	{
+		/*
+		 * Note that the only difference between xcbc(aes) and cmac(aes)
+		 * is the preparekey function.
+		 */
+		.base.cra_name = "xcbc(aes)",
+		.base.cra_driver_name = "xcbc-aes-lib",
+		.base.cra_priority = 300,
+		.base.cra_blocksize = AES_BLOCK_SIZE,
+		.base.cra_ctxsize = sizeof(struct aes_cmac_key),
+		.base.cra_module = THIS_MODULE,
+		.digestsize = AES_BLOCK_SIZE,
+		.setkey = crypto_aes_xcbc_setkey,
+		.init = crypto_aes_cmac_init,
+		.update = crypto_aes_cmac_update,
+		.final = crypto_aes_cmac_final,
+		.digest = crypto_aes_cmac_digest,
+		.descsize = sizeof(struct aes_cmac_ctx),
+	},
+#endif
+#if IS_ENABLED(CONFIG_CRYPTO_CCM)
+	{
+		.base.cra_name = "cbcmac(aes)",
+		.base.cra_driver_name = "cbcmac-aes-lib",
+		.base.cra_priority = 300,
+		.base.cra_blocksize = AES_BLOCK_SIZE,
+		.base.cra_ctxsize = sizeof(struct aes_enckey),
+		.base.cra_module = THIS_MODULE,
+		.digestsize = AES_BLOCK_SIZE,
+		.setkey = crypto_aes_cbcmac_setkey,
+		.init = crypto_aes_cbcmac_init,
+		.update = crypto_aes_cbcmac_update,
+		.final = crypto_aes_cbcmac_final,
+		.digest = crypto_aes_cbcmac_digest,
+		.descsize = sizeof(struct aes_cbcmac_ctx),
+	},
+#endif
+};
+
+static int __init crypto_aes_mod_init(void)
+{
+	int err = crypto_register_alg(&alg);
+
+	if (err)
+		return err;
+
+	if (ARRAY_SIZE(mac_algs) > 0) {
+		err = crypto_register_shashes(mac_algs, ARRAY_SIZE(mac_algs));
+		if (err)
+			goto err_unregister_alg;
+	} /* Else, CONFIG_CRYPTO_HASH might not be enabled. */
+	return 0;
+
+err_unregister_alg:
+	crypto_unregister_alg(&alg);
+	return err;
+}
+module_init(crypto_aes_mod_init);
+
+static void __exit crypto_aes_mod_exit(void)
+{
+	if (ARRAY_SIZE(mac_algs) > 0)
+		crypto_unregister_shashes(mac_algs, ARRAY_SIZE(mac_algs));
+	crypto_unregister_alg(&alg);
+}
+module_exit(crypto_aes_mod_exit);
+
+MODULE_DESCRIPTION("Crypto API support for AES block cipher");
+MODULE_IMPORT_NS("CRYPTO_INTERNAL");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS_CRYPTO("aes");
+MODULE_ALIAS_CRYPTO("aes-lib");
+#if IS_ENABLED(CONFIG_CRYPTO_CMAC)
+MODULE_ALIAS_CRYPTO("cmac(aes)");
+MODULE_ALIAS_CRYPTO("cmac-aes-lib");
+#endif
+#if IS_ENABLED(CONFIG_CRYPTO_XCBC)
+MODULE_ALIAS_CRYPTO("xcbc(aes)");
+MODULE_ALIAS_CRYPTO("xcbc-aes-lib");
+#endif
+#if IS_ENABLED(CONFIG_CRYPTO_CCM)
+MODULE_ALIAS_CRYPTO("cbcmac(aes)");
+MODULE_ALIAS_CRYPTO("cbcmac-aes-lib");
+#endif