Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git…

…/herbert/crypto-2.6

Pull crypto update from Herbert Xu:
 "Algorithms:
   - Add RSA padding algorithm

  Drivers:
   - Add GCM mode support to atmel
   - Add atmel support for SAMA5D2 devices
   - Add cipher modes to talitos
   - Add rockchip driver for rk3288
   - Add qat support for C3XXX and C62X"

* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (103 commits)
  crypto: hifn_795x, picoxcell - use ablkcipher_request_cast
  crypto: qat - fix SKU definiftion for c3xxx dev
  crypto: qat - Fix random config build issue
  crypto: ccp - use to_pci_dev and to_platform_device
  crypto: qat - Rename dh895xcc mmp firmware
  crypto: 842 - remove WARN inside printk
  crypto: atmel-aes - add debug facilities to monitor register accesses.
  crypto: atmel-aes - add support to GCM mode
  crypto: atmel-aes - change the DMA threshold
  crypto: atmel-aes - fix the counter overflow in CTR mode
  crypto: atmel-aes - fix atmel-ctr-aes driver for RFC 3686
  crypto: atmel-aes - create sections to regroup functions by usage
  crypto: atmel-aes - fix typo and indentation
  crypto: atmel-aes - use SIZE_IN_WORDS() helper macro
  crypto: atmel-aes - improve performances of data transfer
  crypto: atmel-aes - fix atmel_aes_remove()
  crypto: atmel-aes - remove useless AES_FLAGS_DMA flag
  crypto: atmel-aes - reduce latency of DMA completion
  crypto: atmel-aes - remove unused 'err' member of struct atmel_aes_dev
  crypto: atmel-aes - rework crypto request completion
  ...

Documentation/devicetree/bindings/crypto/rockchip-crypto.txt

@@ -0,0 +1,29 @@
+Rockchip Electronics And Security Accelerator
+
+Required properties:
+- compatible: Should be "rockchip,rk3288-crypto"
+- reg: Base physical address of the engine and length of memory mapped
+       region
+- interrupts: Interrupt number
+- clocks: Reference to the clocks about crypto
+- clock-names: "aclk" used to clock data
+	       "hclk" used to clock data
+	       "sclk" used to clock crypto accelerator
+	       "apb_pclk" used to clock dma
+- resets: Must contain an entry for each entry in reset-names.
+	  See ../reset/reset.txt for details.
+- reset-names: Must include the name "crypto-rst".
+
+Examples:
+
+	crypto: cypto-controller@ff8a0000 {
+		compatible = "rockchip,rk3288-crypto";
+		reg = <0xff8a0000 0x4000>;
+		interrupts = <GIC_SPI 48 IRQ_TYPE_LEVEL_HIGH>;
+		clocks = <&cru ACLK_CRYPTO>, <&cru HCLK_CRYPTO>,
+			 <&cru SCLK_CRYPTO>, <&cru ACLK_DMAC1>;
+		clock-names = "aclk", "hclk", "sclk", "apb_pclk";
+		resets = <&cru SRST_CRYPTO>;
+		reset-names = "crypto-rst";
+		status = "okay";
+	};

arch/powerpc/include/asm/icswx.h

@@ -164,6 +164,7 @@ struct coprocessor_request_block {
 #define ICSWX_INITIATED		(0x8)
 #define ICSWX_BUSY		(0x4)
 #define ICSWX_REJECTED		(0x2)
+#define ICSWX_XERS0		(0x1)	/* undefined or set from XERSO. */
 
 static inline int icswx(__be32 ccw, struct coprocessor_request_block *crb)
 {

arch/x86/crypto/ghash-clmulni-intel_glue.c

@@ -219,6 +219,29 @@ static int ghash_async_final(struct ahash_request *req)
 	}
 }
 
+static int ghash_async_import(struct ahash_request *req, const void *in)
+{
+	struct ahash_request *cryptd_req = ahash_request_ctx(req);
+	struct shash_desc *desc = cryptd_shash_desc(cryptd_req);
+	struct ghash_desc_ctx *dctx = shash_desc_ctx(desc);
+
+	ghash_async_init(req);
+	memcpy(dctx, in, sizeof(*dctx));
+	return 0;
+
+}
+
+static int ghash_async_export(struct ahash_request *req, void *out)
+{
+	struct ahash_request *cryptd_req = ahash_request_ctx(req);
+	struct shash_desc *desc = cryptd_shash_desc(cryptd_req);
+	struct ghash_desc_ctx *dctx = shash_desc_ctx(desc);
+
+	memcpy(out, dctx, sizeof(*dctx));
+	return 0;
+
+}
+
 static int ghash_async_digest(struct ahash_request *req)
 {
 	struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
@@ -288,8 +311,11 @@ static struct ahash_alg ghash_async_alg = {
 	.final		= ghash_async_final,
 	.setkey		= ghash_async_setkey,
 	.digest		= ghash_async_digest,
+	.export		= ghash_async_export,
+	.import		= ghash_async_import,
 	.halg = {
 		.digestsize	= GHASH_DIGEST_SIZE,
+		.statesize = sizeof(struct ghash_desc_ctx),
 		.base = {
 			.cra_name		= "ghash",
 			.cra_driver_name	= "ghash-clmulni",

crypto/Makefile

@@ -40,6 +40,7 @@ rsa_generic-y := rsapubkey-asn1.o
 rsa_generic-y += rsaprivkey-asn1.o
 rsa_generic-y += rsa.o
 rsa_generic-y += rsa_helper.o
+rsa_generic-y += rsa-pkcs1pad.o
 obj-$(CONFIG_CRYPTO_RSA) += rsa_generic.o
 
 cryptomgr-y := algboss.o testmgr.o

crypto/akcipher.c

@@ -21,6 +21,7 @@
 #include <linux/cryptouser.h>
 #include <net/netlink.h>
 #include <crypto/akcipher.h>
+#include <crypto/internal/akcipher.h>
 #include "internal.h"
 
 #ifdef CONFIG_NET
@@ -75,9 +76,17 @@ static int crypto_akcipher_init_tfm(struct crypto_tfm *tfm)
 	return 0;
 }
 
+static void crypto_akcipher_free_instance(struct crypto_instance *inst)
+{
+	struct akcipher_instance *akcipher = akcipher_instance(inst);
+
+	akcipher->free(akcipher);
+}
+
 static const struct crypto_type crypto_akcipher_type = {
 	.extsize = crypto_alg_extsize,
 	.init_tfm = crypto_akcipher_init_tfm,
+	.free = crypto_akcipher_free_instance,
 #ifdef CONFIG_PROC_FS
 	.show = crypto_akcipher_show,
 #endif
@@ -88,20 +97,35 @@ static const struct crypto_type crypto_akcipher_type = {
 	.tfmsize = offsetof(struct crypto_akcipher, base),
 };
 
+int crypto_grab_akcipher(struct crypto_akcipher_spawn *spawn, const char *name,
+			 u32 type, u32 mask)
+{
+	spawn->base.frontend = &crypto_akcipher_type;
+	return crypto_grab_spawn(&spawn->base, name, type, mask);
+}
+EXPORT_SYMBOL_GPL(crypto_grab_akcipher);
+
 struct crypto_akcipher *crypto_alloc_akcipher(const char *alg_name, u32 type,
 					      u32 mask)
 {
 	return crypto_alloc_tfm(alg_name, &crypto_akcipher_type, type, mask);
 }
 EXPORT_SYMBOL_GPL(crypto_alloc_akcipher);
 
-int crypto_register_akcipher(struct akcipher_alg *alg)
+static void akcipher_prepare_alg(struct akcipher_alg *alg)
 {
 	struct crypto_alg *base = &alg->base;
 
 	base->cra_type = &crypto_akcipher_type;
 	base->cra_flags &= ~CRYPTO_ALG_TYPE_MASK;
 	base->cra_flags |= CRYPTO_ALG_TYPE_AKCIPHER;
+}
+
+int crypto_register_akcipher(struct akcipher_alg *alg)
+{
+	struct crypto_alg *base = &alg->base;
+
+	akcipher_prepare_alg(alg);
 	return crypto_register_alg(base);
 }
 EXPORT_SYMBOL_GPL(crypto_register_akcipher);
@@ -112,5 +136,13 @@ void crypto_unregister_akcipher(struct akcipher_alg *alg)
 }
 EXPORT_SYMBOL_GPL(crypto_unregister_akcipher);
 
+int akcipher_register_instance(struct crypto_template *tmpl,
+			       struct akcipher_instance *inst)
+{
+	akcipher_prepare_alg(&inst->alg);
+	return crypto_register_instance(tmpl, akcipher_crypto_instance(inst));
+}
+EXPORT_SYMBOL_GPL(akcipher_register_instance);
+
 MODULE_LICENSE("GPL");
 MODULE_DESCRIPTION("Generic public key cipher type");

crypto/algapi.c

@@ -93,16 +93,15 @@ static struct list_head *crypto_more_spawns(struct crypto_alg *alg,
 {
 	struct crypto_spawn *spawn, *n;
 
-	if (list_empty(stack))
+	spawn = list_first_entry_or_null(stack, struct crypto_spawn, list);
+	if (!spawn)
 		return NULL;
 
-	spawn = list_first_entry(stack, struct crypto_spawn, list);
-	n = list_entry(spawn->list.next, struct crypto_spawn, list);
+	n = list_next_entry(spawn, list);
 
 	if (spawn->alg && &n->list != stack && !n->alg)
 		n->alg = (n->list.next == stack) ? alg :
-			 &list_entry(n->list.next, struct crypto_spawn,
-				     list)->inst->alg;
+			 &list_next_entry(n, list)->inst->alg;
 
 	list_move(&spawn->list, secondary_spawns);
 

crypto/algif_aead.c

@@ -213,7 +213,7 @@ static int aead_sendmsg(struct socket *sock, struct msghdr *msg, size_t size)
 	}
 
 	while (size) {
-		unsigned long len = size;
+		size_t len = size;
 		struct scatterlist *sg = NULL;
 
 		/* use the existing memory in an allocated page */
@@ -247,7 +247,7 @@ static int aead_sendmsg(struct socket *sock, struct msghdr *msg, size_t size)
 		/* allocate a new page */
 		len = min_t(unsigned long, size, aead_sndbuf(sk));
 		while (len) {
-			int plen = 0;
+			size_t plen = 0;
 
 			if (sgl->cur >= ALG_MAX_PAGES) {
 				aead_put_sgl(sk);
@@ -256,7 +256,7 @@ static int aead_sendmsg(struct socket *sock, struct msghdr *msg, size_t size)
 			}
 
 			sg = sgl->sg + sgl->cur;
-			plen = min_t(int, len, PAGE_SIZE);
+			plen = min_t(size_t, len, PAGE_SIZE);
 
 			sg_assign_page(sg, alloc_page(GFP_KERNEL));
 			err = -ENOMEM;

crypto/algif_skcipher.c

@@ -40,7 +40,7 @@ struct skcipher_ctx {
 	struct af_alg_completion completion;
 
 	atomic_t inflight;
-	unsigned used;
+	size_t used;
 
 	unsigned int len;
 	bool more;
@@ -153,7 +153,7 @@ static int skcipher_alloc_sgl(struct sock *sk)
 	return 0;
 }
 
-static void skcipher_pull_sgl(struct sock *sk, int used, int put)
+static void skcipher_pull_sgl(struct sock *sk, size_t used, int put)
 {
 	struct alg_sock *ask = alg_sk(sk);
 	struct skcipher_ctx *ctx = ask->private;
@@ -167,7 +167,7 @@ static void skcipher_pull_sgl(struct sock *sk, int used, int put)
 		sg = sgl->sg;
 
 		for (i = 0; i < sgl->cur; i++) {
-			int plen = min_t(int, used, sg[i].length);
+			size_t plen = min_t(size_t, used, sg[i].length);
 
 			if (!sg_page(sg + i))
 				continue;
@@ -348,7 +348,7 @@ static int skcipher_sendmsg(struct socket *sock, struct msghdr *msg,
 	while (size) {
 		struct scatterlist *sg;
 		unsigned long len = size;
-		int plen;
+		size_t plen;
 
 		if (ctx->merge) {
 			sgl = list_entry(ctx->tsgl.prev,
@@ -390,7 +390,7 @@ static int skcipher_sendmsg(struct socket *sock, struct msghdr *msg,
 		sg_unmark_end(sg + sgl->cur);
 		do {
 			i = sgl->cur;
-			plen = min_t(int, len, PAGE_SIZE);
+			plen = min_t(size_t, len, PAGE_SIZE);
 
 			sg_assign_page(sg + i, alloc_page(GFP_KERNEL));
 			err = -ENOMEM;

crypto/asymmetric_keys/signature.c

@@ -13,7 +13,7 @@
 
 #define pr_fmt(fmt) "SIG: "fmt
 #include <keys/asymmetric-subtype.h>
-#include <linux/module.h>
+#include <linux/export.h>
 #include <linux/err.h>
 #include <crypto/public_key.h>
 #include "asymmetric_keys.h"

crypto/chacha20poly1305.c

@@ -130,6 +130,9 @@ static int chacha_decrypt(struct aead_request *req)
 	struct scatterlist *src, *dst;
 	int err;
 
+	if (rctx->cryptlen == 0)
+		goto skip;
+
 	chacha_iv(creq->iv, req, 1);
 
 	sg_init_table(rctx->src, 2);
@@ -150,6 +153,7 @@ static int chacha_decrypt(struct aead_request *req)
 	if (err)
 		return err;
 
+skip:
 	return poly_verify_tag(req);
 }
 
@@ -415,6 +419,9 @@ static int chacha_encrypt(struct aead_request *req)
 	struct scatterlist *src, *dst;
 	int err;
 
+	if (req->cryptlen == 0)
+		goto skip;
+
 	chacha_iv(creq->iv, req, 1);
 
 	sg_init_table(rctx->src, 2);
@@ -435,6 +442,7 @@ static int chacha_encrypt(struct aead_request *req)
 	if (err)
 		return err;
 
+skip:
 	return poly_genkey(req);
 }
 

crypto/cryptd.c

@@ -637,6 +637,7 @@ static int cryptd_create_hash(struct crypto_template *tmpl, struct rtattr **tb,
 	inst->alg.halg.base.cra_flags = type;
 
 	inst->alg.halg.digestsize = salg->digestsize;
+	inst->alg.halg.statesize = salg->statesize;
 	inst->alg.halg.base.cra_ctxsize = sizeof(struct cryptd_hash_ctx);
 
 	inst->alg.halg.base.cra_init = cryptd_hash_init_tfm;
@@ -887,8 +888,7 @@ struct cryptd_ablkcipher *cryptd_alloc_ablkcipher(const char *alg_name,
 	if (snprintf(cryptd_alg_name, CRYPTO_MAX_ALG_NAME,
 		     "cryptd(%s)", alg_name) >= CRYPTO_MAX_ALG_NAME)
 		return ERR_PTR(-EINVAL);
-	type &= ~(CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_GENIV);
-	type |= CRYPTO_ALG_TYPE_BLKCIPHER;
+	type = crypto_skcipher_type(type);
 	mask &= ~CRYPTO_ALG_TYPE_MASK;
 	mask |= (CRYPTO_ALG_GENIV | CRYPTO_ALG_TYPE_BLKCIPHER_MASK);
 	tfm = crypto_alloc_base(cryptd_alg_name, type, mask);

crypto/drbg.c

@@ -626,7 +626,7 @@ static int drbg_ctr_generate(struct drbg_state *drbg,
 	return len;
 }
 
-static struct drbg_state_ops drbg_ctr_ops = {
+static const struct drbg_state_ops drbg_ctr_ops = {
 	.update		= drbg_ctr_update,
 	.generate	= drbg_ctr_generate,
 	.crypto_init	= drbg_init_sym_kernel,
@@ -752,7 +752,7 @@ static int drbg_hmac_generate(struct drbg_state *drbg,
 	return len;
 }
 
-static struct drbg_state_ops drbg_hmac_ops = {
+static const struct drbg_state_ops drbg_hmac_ops = {
 	.update		= drbg_hmac_update,
 	.generate	= drbg_hmac_generate,
 	.crypto_init	= drbg_init_hash_kernel,
@@ -1032,7 +1032,7 @@ static int drbg_hash_generate(struct drbg_state *drbg,
  * scratchpad usage: as update and generate are used isolated, both
  * can use the scratchpad
  */
-static struct drbg_state_ops drbg_hash_ops = {
+static const struct drbg_state_ops drbg_hash_ops = {
 	.update		= drbg_hash_update,
 	.generate	= drbg_hash_generate,
 	.crypto_init	= drbg_init_hash_kernel,

crypto/mcryptd.c

@@ -128,13 +128,9 @@ static void mcryptd_opportunistic_flush(void)
 	flist = per_cpu_ptr(mcryptd_flist, smp_processor_id());
 	while (single_task_running()) {
 		mutex_lock(&flist->lock);
-		if (list_empty(&flist->list)) {
-			mutex_unlock(&flist->lock);
-			return;
-		}
-		cstate = list_entry(flist->list.next,
+		cstate = list_first_entry_or_null(&flist->list,
 				struct mcryptd_alg_cstate, flush_list);
-		if (!cstate->flusher_engaged) {
+		if (!cstate || !cstate->flusher_engaged) {
 			mutex_unlock(&flist->lock);
 			return;
 		}

crypto/md5.c

@@ -24,6 +24,12 @@
 #include <linux/cryptohash.h>
 #include <asm/byteorder.h>
 
+const u8 md5_zero_message_hash[MD5_DIGEST_SIZE] = {
+	0xd4, 0x1d, 0x8c, 0xd9, 0x8f, 0x00, 0xb2, 0x04,
+	0xe9, 0x80, 0x09, 0x98, 0xec, 0xf8, 0x42, 0x7e,
+};
+EXPORT_SYMBOL_GPL(md5_zero_message_hash);
+
 /* XXX: this stuff can be optimized */
 static inline void le32_to_cpu_array(u32 *buf, unsigned int words)
 {