Merge tag 'v6.4-p1' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6

Pull crypto updates from Herbert Xu:
 "API:
   - Total usage stats now include all that returned errors (instead of
     just some)
   - Remove maximum hash statesize limit
   - Add cloning support for hmac and unkeyed hashes
   - Demote BUG_ON in crypto_unregister_alg to a WARN_ON

  Algorithms:
   - Use RIP-relative addressing on x86 to prepare for PIE build
   - Add accelerated AES/GCM stitched implementation on powerpc P10
   - Add some test vectors for cmac(camellia)
   - Remove failure case where jent is unavailable outside of FIPS mode
     in drbg
   - Add permanent and intermittent health error checks in jitter RNG

  Drivers:
   - Add support for 402xx devices in qat
   - Add support for HiSTB TRNG
   - Fix hash concurrency issues in stm32
   - Add OP-TEE firmware support in caam"

* tag 'v6.4-p1' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (139 commits)
  i2c: designware: Add doorbell support for Mendocino
  i2c: designware: Use PCI PSP driver for communication
  powerpc: Move Power10 feature PPC_MODULE_FEATURE_P10
  crypto: p10-aes-gcm - Remove POWER10_CPU dependency
  crypto: testmgr - Add some test vectors for cmac(camellia)
  crypto: cryptd - Add support for cloning hashes
  crypto: cryptd - Convert hash to use modern init_tfm/exit_tfm
  crypto: hmac - Add support for cloning
  crypto: hash - Add crypto_clone_ahash/shash
  crypto: api - Add crypto_clone_tfm
  crypto: api - Add crypto_tfm_get
  crypto: x86/sha - Use local .L symbols for code
  crypto: x86/crc32 - Use local .L symbols for code
  crypto: x86/aesni - Use local .L symbols for code
  crypto: x86/sha256 - Use RIP-relative addressing
  crypto: x86/ghash - Use RIP-relative addressing
  crypto: x86/des3 - Use RIP-relative addressing
  crypto: x86/crc32c - Use RIP-relative addressing
  crypto: x86/cast6 - Use RIP-relative addressing
  crypto: x86/cast5 - Use RIP-relative addressing
  ...

1 files changed, 46 insertions, 19 deletions

diff --git a/crypto/rng.c b/crypto/rng.c
index fea082b25fe4..ffde0f64fb25 100644
--- a/crypto/rng.c
+++ b/crypto/rng.c
@@ -8,17 +8,17 @@
  * Copyright (c) 2015 Herbert Xu <herbert@gondor.apana.org.au>
  */
 
-#include <linux/atomic.h>
 #include <crypto/internal/rng.h>
+#include <linux/atomic.h>
+#include <linux/cryptouser.h>
 #include <linux/err.h>
+#include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/mutex.h>
 #include <linux/random.h>
 #include <linux/seq_file.h>
 #include <linux/slab.h>
 #include <linux/string.h>
-#include <linux/cryptouser.h>
-#include <linux/compiler.h>
 #include <net/netlink.h>
 
 #include "internal.h"
@@ -30,27 +30,30 @@ static int crypto_default_rng_refcnt;
 
 int crypto_rng_reset(struct crypto_rng *tfm, const u8 *seed, unsigned int slen)
 {
-	struct crypto_alg *alg = tfm->base.__crt_alg;
+	struct rng_alg *alg = crypto_rng_alg(tfm);
 	u8 *buf = NULL;
 	int err;
 
+	if (IS_ENABLED(CONFIG_CRYPTO_STATS))
+		atomic64_inc(&rng_get_stat(alg)->seed_cnt);
+
 	if (!seed && slen) {
 		buf = kmalloc(slen, GFP_KERNEL);
+		err = -ENOMEM;
 		if (!buf)
-			return -ENOMEM;
+			goto out;
 
 		err = get_random_bytes_wait(buf, slen);
 		if (err)
-			goto out;
+			goto free_buf;
 		seed = buf;
 	}
 
-	crypto_stats_get(alg);
-	err = crypto_rng_alg(tfm)->seed(tfm, seed, slen);
-	crypto_stats_rng_seed(alg, err);
-out:
+	err = alg->seed(tfm, seed, slen);
+free_buf:
 	kfree_sensitive(buf);
-	return err;
+out:
+	return crypto_rng_errstat(alg, err);
 }
 EXPORT_SYMBOL_GPL(crypto_rng_reset);
 
@@ -66,8 +69,8 @@ static unsigned int seedsize(struct crypto_alg *alg)
 	return ralg->seedsize;
 }
 
-#ifdef CONFIG_NET
-static int crypto_rng_report(struct sk_buff *skb, struct crypto_alg *alg)
+static int __maybe_unused crypto_rng_report(
+	struct sk_buff *skb, struct crypto_alg *alg)
 {
 	struct crypto_report_rng rrng;
 
@@ -79,12 +82,6 @@ static int crypto_rng_report(struct sk_buff *skb, struct crypto_alg *alg)
 
 	return nla_put(skb, CRYPTOCFGA_REPORT_RNG, sizeof(rrng), &rrng);
 }
-#else
-static int crypto_rng_report(struct sk_buff *skb, struct crypto_alg *alg)
-{
-	return -ENOSYS;
-}
-#endif
 
 static void crypto_rng_show(struct seq_file *m, struct crypto_alg *alg)
 	__maybe_unused;
@@ -94,13 +91,39 @@ static void crypto_rng_show(struct seq_file *m, struct crypto_alg *alg)
 	seq_printf(m, "seedsize     : %u\n", seedsize(alg));
 }
 
+static int __maybe_unused crypto_rng_report_stat(
+	struct sk_buff *skb, struct crypto_alg *alg)
+{
+	struct rng_alg *rng = __crypto_rng_alg(alg);
+	struct crypto_istat_rng *istat;
+	struct crypto_stat_rng rrng;
+
+	istat = rng_get_stat(rng);
+
+	memset(&rrng, 0, sizeof(rrng));
+
+	strscpy(rrng.type, "rng", sizeof(rrng.type));
+
+	rrng.stat_generate_cnt = atomic64_read(&istat->generate_cnt);
+	rrng.stat_generate_tlen = atomic64_read(&istat->generate_tlen);
+	rrng.stat_seed_cnt = atomic64_read(&istat->seed_cnt);
+	rrng.stat_err_cnt = atomic64_read(&istat->err_cnt);
+
+	return nla_put(skb, CRYPTOCFGA_STAT_RNG, sizeof(rrng), &rrng);
+}
+
 static const struct crypto_type crypto_rng_type = {
 	.extsize = crypto_alg_extsize,
 	.init_tfm = crypto_rng_init_tfm,
 #ifdef CONFIG_PROC_FS
 	.show = crypto_rng_show,
 #endif
+#ifdef CONFIG_CRYPTO_USER
 	.report = crypto_rng_report,
+#endif
+#ifdef CONFIG_CRYPTO_STATS
+	.report_stat = crypto_rng_report_stat,
+#endif
 	.maskclear = ~CRYPTO_ALG_TYPE_MASK,
 	.maskset = CRYPTO_ALG_TYPE_MASK,
 	.type = CRYPTO_ALG_TYPE_RNG,
@@ -176,6 +199,7 @@ EXPORT_SYMBOL_GPL(crypto_del_default_rng);
 
 int crypto_register_rng(struct rng_alg *alg)
 {
+	struct crypto_istat_rng *istat = rng_get_stat(alg);
 	struct crypto_alg *base = &alg->base;
 
 	if (alg->seedsize > PAGE_SIZE / 8)
@@ -185,6 +209,9 @@ int crypto_register_rng(struct rng_alg *alg)
 	base->cra_flags &= ~CRYPTO_ALG_TYPE_MASK;
 	base->cra_flags |= CRYPTO_ALG_TYPE_RNG;
 
+	if (IS_ENABLED(CONFIG_CRYPTO_STATS))
+		memset(istat, 0, sizeof(*istat));
+
 	return crypto_register_alg(base);
 }
 EXPORT_SYMBOL_GPL(crypto_register_rng);