Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 into avr32-arch

26 files changed, 1192 insertions, 171 deletions

diff --git a/crypto/Kconfig b/crypto/Kconfig
index 8dde4fc..74d0e62 100644
--- a/crypto/Kconfig
+++ b/crypto/Kconfig
@@ -56,6 +56,7 @@ config CRYPTO_BLKCIPHER2
 	tristate
 	select CRYPTO_ALGAPI2
 	select CRYPTO_RNG2
+	select CRYPTO_WORKQUEUE
 
 config CRYPTO_HASH
 	tristate
@@ -75,6 +76,10 @@ config CRYPTO_RNG2
 	tristate
 	select CRYPTO_ALGAPI2
 
+config CRYPTO_PCOMP
+	tristate
+	select CRYPTO_ALGAPI2
+
 config CRYPTO_MANAGER
 	tristate "Cryptographic algorithm manager"
 	select CRYPTO_MANAGER2
@@ -87,6 +92,7 @@ config CRYPTO_MANAGER2
 	select CRYPTO_AEAD2
 	select CRYPTO_HASH2
 	select CRYPTO_BLKCIPHER2
+	select CRYPTO_PCOMP
 
 config CRYPTO_GF128MUL
 	tristate "GF(2^128) multiplication functions (EXPERIMENTAL)"
@@ -106,11 +112,15 @@ config CRYPTO_NULL
 	help
 	  These are 'Null' algorithms, used by IPsec, which do nothing.
 
+config CRYPTO_WORKQUEUE
+       tristate
+
 config CRYPTO_CRYPTD
 	tristate "Software async crypto daemon"
 	select CRYPTO_BLKCIPHER
 	select CRYPTO_HASH
 	select CRYPTO_MANAGER
+	select CRYPTO_WORKQUEUE
 	help
 	  This is a generic software asynchronous crypto daemon that
 	  converts an arbitrary synchronous software crypto algorithm
@@ -470,6 +480,31 @@ config CRYPTO_AES_X86_64
 
 	  See <http://csrc.nist.gov/encryption/aes/> for more information.
 
+config CRYPTO_AES_NI_INTEL
+	tristate "AES cipher algorithms (AES-NI)"
+	depends on (X86 || UML_X86) && 64BIT
+	select CRYPTO_AES_X86_64
+	select CRYPTO_CRYPTD
+	select CRYPTO_ALGAPI
+	help
+	  Use Intel AES-NI instructions for AES algorithm.
+
+	  AES cipher algorithms (FIPS-197). AES uses the Rijndael
+	  algorithm.
+
+	  Rijndael appears to be consistently a very good performer in
+	  both hardware and software across a wide range of computing
+	  environments regardless of its use in feedback or non-feedback
+	  modes. Its key setup time is excellent, and its key agility is
+	  good. Rijndael's very low memory requirements make it very well
+	  suited for restricted-space environments, in which it also
+	  demonstrates excellent performance. Rijndael's operations are
+	  among the easiest to defend against power and timing attacks.
+
+	  The AES specifies three key sizes: 128, 192 and 256 bits
+
+	  See <http://csrc.nist.gov/encryption/aes/> for more information.
+
 config CRYPTO_ANUBIS
 	tristate "Anubis cipher algorithm"
 	select CRYPTO_ALGAPI
@@ -714,6 +749,15 @@ config CRYPTO_DEFLATE
 
 	  You will most probably want this if using IPSec.
 
+config CRYPTO_ZLIB
+	tristate "Zlib compression algorithm"
+	select CRYPTO_PCOMP
+	select ZLIB_INFLATE
+	select ZLIB_DEFLATE
+	select NLATTR
+	help
+	  This is the zlib algorithm.
+
 config CRYPTO_LZO
 	tristate "LZO compression algorithm"
 	select CRYPTO_ALGAPI
diff --git a/crypto/Makefile b/crypto/Makefile
index 46b08bf..673d9f7 100644
--- a/crypto/Makefile
+++ b/crypto/Makefile
@@ -5,6 +5,8 @@
 obj-$(CONFIG_CRYPTO) += crypto.o
 crypto-objs := api.o cipher.o digest.o compress.o
 
+obj-$(CONFIG_CRYPTO_WORKQUEUE) += crypto_wq.o
+
 obj-$(CONFIG_CRYPTO_FIPS) += fips.o
 
 crypto_algapi-$(CONFIG_PROC_FS) += proc.o
@@ -25,6 +27,8 @@ crypto_hash-objs += ahash.o
 crypto_hash-objs += shash.o
 obj-$(CONFIG_CRYPTO_HASH2) += crypto_hash.o
 
+obj-$(CONFIG_CRYPTO_PCOMP) += pcompress.o
+
 cryptomgr-objs := algboss.o testmgr.o
 
 obj-$(CONFIG_CRYPTO_MANAGER2) += cryptomgr.o
@@ -70,6 +74,7 @@ obj-$(CONFIG_CRYPTO_ANUBIS) += anubis.o
 obj-$(CONFIG_CRYPTO_SEED) += seed.o
 obj-$(CONFIG_CRYPTO_SALSA20) += salsa20_generic.o
 obj-$(CONFIG_CRYPTO_DEFLATE) += deflate.o
+obj-$(CONFIG_CRYPTO_ZLIB) += zlib.o
 obj-$(CONFIG_CRYPTO_MICHAEL_MIC) += michael_mic.o
 obj-$(CONFIG_CRYPTO_CRC32C) += crc32c.o
 obj-$(CONFIG_CRYPTO_AUTHENC) += authenc.o
diff --git a/crypto/ablkcipher.c b/crypto/ablkcipher.c
index 94140b3..e11ce37 100644
--- a/crypto/ablkcipher.c
+++ b/crypto/ablkcipher.c
@@ -282,6 +282,25 @@ static struct crypto_alg *crypto_lookup_skcipher(const char *name, u32 type,
 					  alg->cra_ablkcipher.ivsize))
 		return alg;
 
+	crypto_mod_put(alg);
+	alg = crypto_alg_mod_lookup(name, type | CRYPTO_ALG_TESTED,
+				    mask & ~CRYPTO_ALG_TESTED);
+	if (IS_ERR(alg))
+		return alg;
+
+	if ((alg->cra_flags & CRYPTO_ALG_TYPE_MASK) ==
+	    CRYPTO_ALG_TYPE_GIVCIPHER) {
+		if ((alg->cra_flags ^ type ^ ~mask) & CRYPTO_ALG_TESTED) {
+			crypto_mod_put(alg);
+			alg = ERR_PTR(-ENOENT);
+		}
+		return alg;
+	}
+
+	BUG_ON(!((alg->cra_flags & CRYPTO_ALG_TYPE_MASK) ==
+		 CRYPTO_ALG_TYPE_BLKCIPHER ? alg->cra_blkcipher.ivsize :
+					     alg->cra_ablkcipher.ivsize));
+
 	return ERR_PTR(crypto_givcipher_default(alg, type, mask));
 }
 
diff --git a/crypto/aead.c b/crypto/aead.c
index 3a6f3f5..d9aa733 100644
--- a/crypto/aead.c
+++ b/crypto/aead.c
@@ -422,6 +422,22 @@ static struct crypto_alg *crypto_lookup_aead(const char *name, u32 type,
 	if (!alg->cra_aead.ivsize)
 		return alg;
 
+	crypto_mod_put(alg);
+	alg = crypto_alg_mod_lookup(name, type | CRYPTO_ALG_TESTED,
+				    mask & ~CRYPTO_ALG_TESTED);
+	if (IS_ERR(alg))
+		return alg;
+
+	if (alg->cra_type == &crypto_aead_type) {
+		if ((alg->cra_flags ^ type ^ ~mask) & CRYPTO_ALG_TESTED) {
+			crypto_mod_put(alg);
+			alg = ERR_PTR(-ENOENT);
+		}
+		return alg;
+	}
+
+	BUG_ON(!alg->cra_aead.ivsize);
+
 	return ERR_PTR(crypto_nivaead_default(alg, type, mask));
 }
 
diff --git a/crypto/ahash.c b/crypto/ahash.c
index ba5292d..b2d1ee3 100644
--- a/crypto/ahash.c
+++ b/crypto/ahash.c
@@ -214,7 +214,7 @@ static void crypto_ahash_show(struct seq_file *m, struct crypto_alg *alg)
 	seq_printf(m, "async        : %s\n", alg->cra_flags & CRYPTO_ALG_ASYNC ?
 					     "yes" : "no");
 	seq_printf(m, "blocksize    : %u\n", alg->cra_blocksize);
-	seq_printf(m, "digestsize   : %u\n", alg->cra_hash.digestsize);
+	seq_printf(m, "digestsize   : %u\n", alg->cra_ahash.digestsize);
 }
 
 const struct crypto_type crypto_ahash_type = {
diff --git a/crypto/algapi.c b/crypto/algapi.c
index 7c41e740..56c62e2 100644
--- a/crypto/algapi.c
+++ b/crypto/algapi.c
@@ -149,6 +149,9 @@ static struct crypto_larval *__crypto_register_alg(struct crypto_alg *alg)
 		if (q == alg)
 			goto err;
 
+		if (crypto_is_moribund(q))
+			continue;
+
 		if (crypto_is_larval(q)) {
 			if (!strcmp(alg->cra_driver_name, q->cra_driver_name))
 				goto err;
@@ -197,7 +200,7 @@ void crypto_alg_tested(const char *name, int err)
 
 	down_write(&crypto_alg_sem);
 	list_for_each_entry(q, &crypto_alg_list, cra_list) {
-		if (!crypto_is_larval(q))
+		if (crypto_is_moribund(q) || !crypto_is_larval(q))
 			continue;
 
 		test = (struct crypto_larval *)q;
@@ -210,6 +213,7 @@ void crypto_alg_tested(const char *name, int err)
 	goto unlock;
 
 found:
+	q->cra_flags |= CRYPTO_ALG_DEAD;
 	alg = test->adult;
 	if (err || list_empty(&alg->cra_list))
 		goto complete;
diff --git a/crypto/algboss.c b/crypto/algboss.c
index 4601e426..6906f92 100644
--- a/crypto/algboss.c
+++ b/crypto/algboss.c
@@ -10,7 +10,7 @@
  *
  */
 
-#include <linux/crypto.h>
+#include <crypto/internal/aead.h>
 #include <linux/ctype.h>
 #include <linux/err.h>
 #include <linux/init.h>
@@ -206,8 +206,7 @@ static int cryptomgr_test(void *data)
 	u32 type = param->type;
 	int err = 0;
 
-	if (!((type ^ CRYPTO_ALG_TYPE_BLKCIPHER) &
-	      CRYPTO_ALG_TYPE_BLKCIPHER_MASK) && !(type & CRYPTO_ALG_GENIV))
+	if (type & CRYPTO_ALG_TESTED)
 		goto skiptest;
 
 	err = alg_test(param->driver, param->alg, type, CRYPTO_ALG_TESTED);
@@ -223,6 +222,7 @@ static int cryptomgr_schedule_test(struct crypto_alg *alg)
 {
 	struct task_struct *thread;
 	struct crypto_test_param *param;
+	u32 type;
 
 	if (!try_module_get(THIS_MODULE))
 		goto err;
@@ -233,7 +233,19 @@ static int cryptomgr_schedule_test(struct crypto_alg *alg)
 
 	memcpy(param->driver, alg->cra_driver_name, sizeof(param->driver));
 	memcpy(param->alg, alg->cra_name, sizeof(param->alg));
-	param->type = alg->cra_flags;
+	type = alg->cra_flags;
+
+	/* This piece of crap needs to disappear into per-type test hooks. */
+	if ((!((type ^ CRYPTO_ALG_TYPE_BLKCIPHER) &
+	       CRYPTO_ALG_TYPE_BLKCIPHER_MASK) && !(type & CRYPTO_ALG_GENIV) &&
+	     ((alg->cra_flags & CRYPTO_ALG_TYPE_MASK) ==
+	      CRYPTO_ALG_TYPE_BLKCIPHER ? alg->cra_blkcipher.ivsize :
+					  alg->cra_ablkcipher.ivsize)) ||
+	    (!((type ^ CRYPTO_ALG_TYPE_AEAD) & CRYPTO_ALG_TYPE_MASK) &&
+	     alg->cra_type == &crypto_nivaead_type && alg->cra_aead.ivsize))
+		type |= CRYPTO_ALG_TESTED;
+
+	param->type = type;
 
 	thread = kthread_run(cryptomgr_test, param, "cryptomgr_test");
 	if (IS_ERR(thread))
diff --git a/crypto/ansi_cprng.c b/crypto/ansi_cprng.c
index 0fac8ff..d80ed4c 100644
--- a/crypto/ansi_cprng.c
+++ b/crypto/ansi_cprng.c
@@ -132,9 +132,15 @@ static int _get_more_prng_bytes(struct prng_context *ctx)
 			 */
 			if (!memcmp(ctx->rand_data, ctx->last_rand_data,
 					DEFAULT_BLK_SZ)) {
+				if (fips_enabled) {
+					panic("cprng %p Failed repetition check!\n",
+						ctx);
+				}
+
 				printk(KERN_ERR
 					"ctx %p Failed repetition check!\n",
 					ctx);
+
 				ctx->flags |= PRNG_NEED_RESET;
 				return -EINVAL;
 			}
@@ -338,7 +344,16 @@ static int cprng_init(struct crypto_tfm *tfm)
 
 	spin_lock_init(&ctx->prng_lock);
 
-	return reset_prng_context(ctx, NULL, DEFAULT_PRNG_KSZ, NULL, NULL);
+	if (reset_prng_context(ctx, NULL, DEFAULT_PRNG_KSZ, NULL, NULL) < 0)
+		return -EINVAL;
+
+	/*
+	 * after allocation, we should always force the user to reset
+	 * so they don't inadvertently use the insecure default values
+	 * without specifying them intentially
+	 */
+	ctx->flags |= PRNG_NEED_RESET;
+	return 0;
 }
 
 static void cprng_exit(struct crypto_tfm *tfm)
diff --git a/crypto/api.c b/crypto/api.c
index 9975a7b..314dab9 100644
--- a/crypto/api.c
+++ b/crypto/api.c
@@ -215,8 +215,19 @@ struct crypto_alg *crypto_larval_lookup(const char *name, u32 type, u32 mask)
 	mask &= ~(CRYPTO_ALG_LARVAL | CRYPTO_ALG_DEAD);
 	type &= mask;
 
-	alg = try_then_request_module(crypto_alg_lookup(name, type, mask),
-				      name);
+	alg = crypto_alg_lookup(name, type, mask);
+	if (!alg) {
+		char tmp[CRYPTO_MAX_ALG_NAME];
+
+		request_module(name);
+
+		if (!((type ^ CRYPTO_ALG_NEED_FALLBACK) & mask) &&
+		    snprintf(tmp, sizeof(tmp), "%s-all", name) < sizeof(tmp))
+			request_module(tmp);
+
+		alg = crypto_alg_lookup(name, type, mask);
+	}
+
 	if (alg)
 		return crypto_is_larval(alg) ? crypto_larval_wait(alg) : alg;
 
@@ -244,7 +255,7 @@ struct crypto_alg *crypto_alg_mod_lookup(const char *name, u32 type, u32 mask)
 	struct crypto_alg *larval;
 	int ok;
 
-	if (!(mask & CRYPTO_ALG_TESTED)) {
+	if (!((type | mask) & CRYPTO_ALG_TESTED)) {
 		type |= CRYPTO_ALG_TESTED;
 		mask |= CRYPTO_ALG_TESTED;
 	}
@@ -453,8 +464,8 @@ err:
 }
 EXPORT_SYMBOL_GPL(crypto_alloc_base);
 
-struct crypto_tfm *crypto_create_tfm(struct crypto_alg *alg,
-				     const struct crypto_type *frontend)
+void *crypto_create_tfm(struct crypto_alg *alg,
+			const struct crypto_type *frontend)
 {
 	char *mem;
 	struct crypto_tfm *tfm = NULL;
@@ -488,9 +499,9 @@ out_free_tfm:
 		crypto_shoot_alg(alg);
 	kfree(mem);
 out_err:
-	tfm = ERR_PTR(err);
+	mem = ERR_PTR(err);
 out:
-	return tfm;
+	return mem;
 }
 EXPORT_SYMBOL_GPL(crypto_create_tfm);
 
@@ -514,12 +525,11 @@ EXPORT_SYMBOL_GPL(crypto_create_tfm);
  *
  *	In case of error the return value is an error pointer.
  */
-struct crypto_tfm *crypto_alloc_tfm(const char *alg_name,
-				    const struct crypto_type *frontend,
-				    u32 type, u32 mask)
+void *crypto_alloc_tfm(const char *alg_name,
+		       const struct crypto_type *frontend, u32 type, u32 mask)
 {
 	struct crypto_alg *(*lookup)(const char *name, u32 type, u32 mask);
-	struct crypto_tfm *tfm;
+	void *tfm;
 	int err;
 
 	type &= frontend->maskclear;
@@ -557,34 +567,34 @@ err:
 	return ERR_PTR(err);
 }
 EXPORT_SYMBOL_GPL(crypto_alloc_tfm);
- 
+
 /*
- *	crypto_free_tfm - Free crypto transform
+ *	crypto_destroy_tfm - Free crypto transform
+ *	@mem: Start of tfm slab
  *	@tfm: Transform to free
  *
- *	crypto_free_tfm() frees up the transform and any associated resources,
+ *	This function frees up the transform and any associated resources,
  *	then drops the refcount on the associated algorithm.
  */
-void crypto_free_tfm(struct crypto_tfm *tfm)
+void crypto_destroy_tfm(void *mem, struct crypto_tfm *tfm)
 {
 	struct crypto_alg *alg;
 	int size;
 
-	if (unlikely(!tfm))
+	if (unlikely(!mem))
 		return;
 
 	alg = tfm->__crt_alg;
-	size = sizeof(*tfm) + alg->cra_ctxsize;
+	size = ksize(mem);
 
 	if (!tfm->exit && alg->cra_exit)
 		alg->cra_exit(tfm);
 	crypto_exit_ops(tfm);
 	crypto_mod_put(alg);
-	memset(tfm, 0, size);
-	kfree(tfm);
+	memset(mem, 0, size);
+	kfree(mem);
 }
-
-EXPORT_SYMBOL_GPL(crypto_free_tfm);
+EXPORT_SYMBOL_GPL(crypto_destroy_tfm);
 
 int crypto_has_alg(const char *name, u32 type, u32 mask)
 {
diff --git a/crypto/authenc.c b/crypto/authenc.c
index 40b6e9e..5793b64 100644
--- a/crypto/authenc.c
+++ b/crypto/authenc.c
@@ -158,16 +158,19 @@ static int crypto_authenc_genicv(struct aead_request *req, u8 *iv,
 	dstp = sg_page(dst);
 	vdst = PageHighMem(dstp) ? NULL : page_address(dstp) + dst->offset;
 
-	sg_init_table(cipher, 2);
-	sg_set_buf(cipher, iv, ivsize);
-	authenc_chain(cipher, dst, vdst == iv + ivsize);
+	if (ivsize) {
+		sg_init_table(cipher, 2);
+		sg_set_buf(cipher, iv, ivsize);
+		authenc_chain(cipher, dst, vdst == iv + ivsize);
+		dst = cipher;
+	}
 
 	cryptlen = req->cryptlen + ivsize;
-	hash = crypto_authenc_hash(req, flags, cipher, cryptlen);
+	hash = crypto_authenc_hash(req, flags, dst, cryptlen);
 	if (IS_ERR(hash))
 		return PTR_ERR(hash);
 
-	scatterwalk_map_and_copy(hash, cipher, cryptlen,
+	scatterwalk_map_and_copy(hash, dst, cryptlen,
 				 crypto_aead_authsize(authenc), 1);
 	return 0;
 }
@@ -285,11 +288,14 @@ static int crypto_authenc_iverify(struct aead_request *req, u8 *iv,
 	srcp = sg_page(src);
 	vsrc = PageHighMem(srcp) ? NULL : page_address(srcp) + src->offset;
 
-	sg_init_table(cipher, 2);
-	sg_set_buf(cipher, iv, ivsize);
-	authenc_chain(cipher, src, vsrc == iv + ivsize);
+	if (ivsize) {
+		sg_init_table(cipher, 2);
+		sg_set_buf(cipher, iv, ivsize);
+		authenc_chain(cipher, src, vsrc == iv + ivsize);
+		src = cipher;
+	}
 
-	return crypto_authenc_verify(req, cipher, cryptlen + ivsize);
+	return crypto_authenc_verify(req, src, cryptlen + ivsize);
 }
 
 static int crypto_authenc_decrypt(struct aead_request *req)
diff --git a/crypto/blkcipher.c b/crypto/blkcipher.c
index 4a7e65c..90d26c9 100644
--- a/crypto/blkcipher.c
+++ b/crypto/blkcipher.c
@@ -124,6 +124,7 @@ int blkcipher_walk_done(struct blkcipher_desc *desc,
 	scatterwalk_done(&walk->in, 0, nbytes);
 	scatterwalk_done(&walk->out, 1, nbytes);
 
+err:
 	walk->total = nbytes;
 	walk->nbytes = nbytes;
 
@@ -132,7 +133,6 @@ int blkcipher_walk_done(struct blkcipher_desc *desc,
 		return blkcipher_walk_next(desc, walk);
 	}
 
-err:
 	if (walk->iv != desc->info)
 		memcpy(desc->info, walk->iv, crypto_blkcipher_ivsize(tfm));
 	if (walk->buffer != walk->page)
@@ -521,7 +521,7 @@ static int crypto_grab_nivcipher(struct crypto_skcipher_spawn *spawn,
 	int err;
 
 	type = crypto_skcipher_type(type);
-	mask = crypto_skcipher_mask(mask) | CRYPTO_ALG_GENIV;
+	mask = crypto_skcipher_mask(mask)| CRYPTO_ALG_GENIV;
 
 	alg = crypto_alg_mod_lookup(name, type, mask);
 	if (IS_ERR(alg))
diff --git a/crypto/ccm.c b/crypto/ccm.c
index 7cf7e5a..c36d654 100644
--- a/crypto/ccm.c
+++ b/crypto/ccm.c
@@ -266,6 +266,8 @@ static int crypto_ccm_auth(struct aead_request *req, struct scatterlist *plain,
 	if (assoclen) {
 		pctx->ilen = format_adata(idata, assoclen);
 		get_data_to_compute(cipher, pctx, req->assoc, req->assoclen);
+	} else {
+		pctx->ilen = 0;
 	}
 
 	/* compute plaintext into mac */
diff --git a/crypto/chainiv.c b/crypto/chainiv.c
index 7c37a49..ba200b0 100644
--- a/crypto/chainiv.c
+++ b/crypto/chainiv.c
@@ -15,6 +15,7 @@
 
 #include <crypto/internal/skcipher.h>
 #include <crypto/rng.h>
+#include <crypto/crypto_wq.h>
 #include <linux/err.h>
 #include <linux/init.h>
 #include <linux/kernel.h>
@@ -133,7 +134,7 @@ static int async_chainiv_schedule_work(struct async_chainiv_ctx *ctx)
 			goto out;
 	}
 
-	queued = schedule_work(&ctx->postponed);
+	queued = queue_work(kcrypto_wq, &ctx->postponed);
 	BUG_ON(!queued);
 
 out:
diff --git a/crypto/cryptd.c b/crypto/cryptd.c
index d29e06b..d14b226 100644
--- a/crypto/cryptd.c
+++ b/crypto/cryptd.c
@@ -12,30 +12,31 @@
 
 #include <crypto/algapi.h>
 #include <crypto/internal/hash.h>
+#include <crypto/cryptd.h>
+#include <crypto/crypto_wq.h>
 #include <linux/err.h>
 #include <linux/init.h>
 #include <linux/kernel.h>
-#include <linux/kthread.h>
 #include <linux/list.h>
 #include <linux/module.h>
-#include <linux/mutex.h>
 #include <linux/scatterlist.h>
 #include <linux/sched.h>
 #include <linux/slab.h>
-#include <linux/spinlock.h>
 
-#define CRYPTD_MAX_QLEN 100
+#define CRYPTD_MAX_CPU_QLEN 100
 
-struct cryptd_state {
-	spinlock_t lock;
-	struct mutex mutex;
+struct cryptd_cpu_queue {
 	struct crypto_queue queue;
-	struct task_struct *task;
+	struct work_struct work;
+};
+
+struct cryptd_queue {
+	struct cryptd_cpu_queue *cpu_queue;
 };
 
 struct cryptd_instance_ctx {
 	struct crypto_spawn spawn;
-	struct cryptd_state *state;
+	struct cryptd_queue *queue;
 };
 
 struct cryptd_blkcipher_ctx {
@@ -54,11 +55,85 @@ struct cryptd_hash_request_ctx {
 	crypto_completion_t complete;
 };
 
-static inline struct cryptd_state *cryptd_get_state(struct crypto_tfm *tfm)
+static void cryptd_queue_worker(struct work_struct *work);
+
+static int cryptd_init_queue(struct cryptd_queue *queue,
+			     unsigned int max_cpu_qlen)
+{
+	int cpu;
+	struct cryptd_cpu_queue *cpu_queue;
+
+	queue->cpu_queue = alloc_percpu(struct cryptd_cpu_queue);
+	if (!queue->cpu_queue)
+		return -ENOMEM;
+	for_each_possible_cpu(cpu) {
+		cpu_queue = per_cpu_ptr(queue->cpu_queue, cpu);
+		crypto_init_queue(&cpu_queue->queue, max_cpu_qlen);
+		INIT_WORK(&cpu_queue->work, cryptd_queue_worker);
+	}
+	return 0;
+}
+
+static void cryptd_fini_queue(struct cryptd_queue *queue)
+{
+	int cpu;
+	struct cryptd_cpu_queue *cpu_queue;
+
+	for_each_possible_cpu(cpu) {
+		cpu_queue = per_cpu_ptr(queue->cpu_queue, cpu);
+		BUG_ON(cpu_queue->queue.qlen);
+	}
+	free_percpu(queue->cpu_queue);
+}
+
+static int cryptd_enqueue_request(struct cryptd_queue *queue,
+				  struct crypto_async_request *request)
+{
+	int cpu, err;
+	struct cryptd_cpu_queue *cpu_queue;
+
+	cpu = get_cpu();
+	cpu_queue = per_cpu_ptr(queue->cpu_queue, cpu);
+	err = crypto_enqueue_request(&cpu_queue->queue, request);
+	queue_work_on(cpu, kcrypto_wq, &cpu_queue->work);
+	put_cpu();
+
+	return err;
+}
+
+/* Called in workqueue context, do one real cryption work (via
+ * req->complete) and reschedule itself if there are more work to
+ * do. */
+static void cryptd_queue_worker(struct work_struct *work)
+{
+	struct cryptd_cpu_queue *cpu_queue;
+	struct crypto_async_request *req, *backlog;
+
+	cpu_queue = container_of(work, struct cryptd_cpu_queue, work);
+	/* Only handle one request at a time to avoid hogging crypto
+	 * workqueue. preempt_disable/enable is used to prevent
+	 * being preempted by cryptd_enqueue_request() */
+	preempt_disable();
+	backlog = crypto_get_backlog(&cpu_queue->queue);
+	req = crypto_dequeue_request(&cpu_queue->queue);
+	preempt_enable();
+
+	if (!req)
+		return;
+
+	if (backlog)
+		backlog->complete(backlog, -EINPROGRESS);
+	req->complete(req, 0);
+
+	if (cpu_queue->queue.qlen)
+		queue_work(kcrypto_wq, &cpu_queue->work);
+}
+
+static inline struct cryptd_queue *cryptd_get_queue(struct crypto_tfm *tfm)
 {
 	struct crypto_instance *inst = crypto_tfm_alg_instance(tfm);
 	struct cryptd_instance_ctx *ictx = crypto_instance_ctx(inst);
-	return ictx->state;
+	return ictx->queue;
 }
 
 static int cryptd_blkcipher_setkey(struct crypto_ablkcipher *parent,
@@ -130,19 +205,13 @@ static int cryptd_blkcipher_enqueue(struct ablkcipher_request *req,
 {
 	struct cryptd_blkcipher_request_ctx *rctx = ablkcipher_request_ctx(req);
 	struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req);
-	struct cryptd_state *state =
-		cryptd_get_state(crypto_ablkcipher_tfm(tfm));
-	int err;
+	struct cryptd_queue *queue;
 
+	queue = cryptd_get_queue(crypto_ablkcipher_tfm(tfm));
 	rctx->complete = req->base.complete;
 	req->base.complete = complete;
 
-	spin_lock_bh(&state->lock);
-	err = ablkcipher_enqueue_request(&state->queue, req);
-	spin_unlock_bh(&state->lock);
-
-	wake_up_process(state->task);
-	return err;
+	return cryptd_enqueue_request(queue, &req->base);
 }
 
 static int cryptd_blkcipher_encrypt_enqueue(struct ablkcipher_request *req)
@@ -176,21 +245,12 @@ static int cryptd_blkcipher_init_tfm(struct crypto_tfm *tfm)
 static void cryptd_blkcipher_exit_tfm(struct crypto_tfm *tfm)
 {
 	struct cryptd_blkcipher_ctx *ctx = crypto_tfm_ctx(tfm);
-	struct cryptd_state *state = cryptd_get_state(tfm);
-	int active;
-
-	mutex_lock(&state->mutex);
-	active = ablkcipher_tfm_in_queue(&state->queue,
-					 __crypto_ablkcipher_cast(tfm));
-	mutex_unlock(&state->mutex);
-
-	BUG_ON(active);
 
 	crypto_free_blkcipher(ctx->child);
 }
 
 static struct crypto_instance *cryptd_alloc_instance(struct crypto_alg *alg,
-						     struct cryptd_state *state)
+						     struct cryptd_queue *queue)
 {
 	struct crypto_instance *inst;
 	struct cryptd_instance_ctx *ctx;
@@ -213,7 +273,7 @@ static struct crypto_instance *cryptd_alloc_instance(struct crypto_alg *alg,
 	if (err)
 		goto out_free_inst;
 
-	ctx->state = state;
+	ctx->queue = queue;
 
 	memcpy(inst->alg.cra_name, alg->cra_name, CRYPTO_MAX_ALG_NAME);
 
@@ -231,7 +291,7 @@ out_free_inst:
 }
 
 static struct crypto_instance *cryptd_alloc_blkcipher(
-	struct rtattr **tb, struct cryptd_state *state)
+	struct rtattr **tb, struct cryptd_queue *queue)
 {
 	struct crypto_instance *inst;
 	struct crypto_alg *alg;
@@ -241,7 +301,7 @@ static struct crypto_instance *cryptd_alloc_blkcipher(
 	if (IS_ERR(alg))
 		return ERR_CAST(alg);
 
-	inst = cryptd_alloc_instance(alg, state);
+	inst = cryptd_alloc_instance(alg, queue);
 	if (IS_ERR(inst))
 		goto out_put_alg;
 
@@ -289,15 +349,6 @@ static int cryptd_hash_init_tfm(struct crypto_tfm *tfm)
 static void cryptd_hash_exit_tfm(struct crypto_tfm *tfm)
 {
 	struct cryptd_hash_ctx *ctx = crypto_tfm_ctx(tfm);
-	struct cryptd_state *state = cryptd_get_state(tfm);
-	int active;
-
-	mutex_lock(&state->mutex);
-	active = ahash_tfm_in_queue(&state->queue,
-				__crypto_ahash_cast(tfm));
-	mutex_unlock(&state->mutex);
-
-	BUG_ON(active);
 
 	crypto_free_hash(ctx->child);
 }
@@ -323,19 +374,13 @@ static int cryptd_hash_enqueue(struct ahash_request *req,
 {
 	struct cryptd_hash_request_ctx *rctx = ahash_request_ctx(req);
 	struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
-	struct cryptd_state *state =
-		cryptd_get_state(crypto_ahash_tfm(tfm));
-	int err;
+	struct cryptd_queue *queue =
+		cryptd_get_queue(crypto_ahash_tfm(tfm));
 
 	rctx->complete = req->base.complete;
 	req->base.complete = complete;
 
-	spin_lock_bh(&state->lock);
-	err = ahash_enqueue_request(&state->queue, req);
-	spin_unlock_bh(&state->lock);
-
-	wake_up_process(state->task);
-	return err;
+	return cryptd_enqueue_request(queue, &req->base);
 }
 
 static void cryptd_hash_init(struct crypto_async_request *req_async, int err)
@@ -468,7 +513,7 @@ static int cryptd_hash_digest_enqueue(struct ahash_request *req)
 }
 
 static struct crypto_instance *cryptd_alloc_hash(
-	struct rtattr **tb, struct cryptd_state *state)
+	struct rtattr **tb, struct cryptd_queue *queue)
 {
 	struct crypto_instance *inst;
 	struct crypto_alg *alg;
@@ -478,7 +523,7 @@ static struct crypto_instance *cryptd_alloc_hash(
 	if (IS_ERR(alg))
 		return ERR_PTR(PTR_ERR(alg));
 
-	inst = cryptd_alloc_instance(alg, state);
+	inst = cryptd_alloc_instance(alg, queue);
 	if (IS_ERR(inst))
 		goto out_put_alg;
 
@@ -502,7 +547,7 @@ out_put_alg:
 	return inst;
 }
 
-static struct cryptd_state state;
+static struct cryptd_queue queue;
 
 static struct crypto_instance *cryptd_alloc(struct rtattr **tb)
 {
@@ -514,9 +559,9 @@ static struct crypto_instance *cryptd_alloc(struct rtattr **tb)
 
 	switch (algt->type & algt->mask & CRYPTO_ALG_TYPE_MASK) {
 	case CRYPTO_ALG_TYPE_BLKCIPHER:
-		return cryptd_alloc_blkcipher(tb, &state);
+		return cryptd_alloc_blkcipher(tb, &queue);
 	case CRYPTO_ALG_TYPE_DIGEST:
-		return cryptd_alloc_hash(tb, &state);
+		return cryptd_alloc_hash(tb, &queue);
 	}
 
 	return ERR_PTR(-EINVAL);
@@ -537,82 +582,58 @@ static struct crypto_template cryptd_tmpl = {
 	.module = THIS_MODULE,
 };
 
-static inline int cryptd_create_thread(struct cryptd_state *state,
-				       int (*fn)(void *data), const char *name)
-{
-	spin_lock_init(&state->lock);
-	mutex_init(&state->mutex);
-	crypto_init_queue(&state->queue, CRYPTD_MAX_QLEN);
-
-	state->task = kthread_run(fn, state, name);
-	if (IS_ERR(state->task))
-		return PTR_ERR(state->task);
+struct cryptd_ablkcipher *cryptd_alloc_ablkcipher(const char *alg_name,
+						  u32 type, u32 mask)
+{
+	char cryptd_alg_name[CRYPTO_MAX_ALG_NAME];
+	struct crypto_ablkcipher *tfm;
+
+	if (snprintf(cryptd_alg_name, CRYPTO_MAX_ALG_NAME,
+		     "cryptd(%s)", alg_name) >= CRYPTO_MAX_ALG_NAME)
+		return ERR_PTR(-EINVAL);
+	tfm = crypto_alloc_ablkcipher(cryptd_alg_name, type, mask);
+	if (IS_ERR(tfm))
+		return ERR_CAST(tfm);
+	if (crypto_ablkcipher_tfm(tfm)->__crt_alg->cra_module != THIS_MODULE) {
+		crypto_free_ablkcipher(tfm);
+		return ERR_PTR(-EINVAL);
+	}
 
-	return 0;
+	return __cryptd_ablkcipher_cast(tfm);
 }
+EXPORT_SYMBOL_GPL(cryptd_alloc_ablkcipher);
 
-static inline void cryptd_stop_thread(struct cryptd_state *state)
+struct crypto_blkcipher *cryptd_ablkcipher_child(struct cryptd_ablkcipher *tfm)
 {
-	BUG_ON(state->queue.qlen);
-	kthread_stop(state->task);
+	struct cryptd_blkcipher_ctx *ctx = crypto_ablkcipher_ctx(&tfm->base);
+	return ctx->child;
 }
+EXPORT_SYMBOL_GPL(cryptd_ablkcipher_child);
 
-static int cryptd_thread(void *data)
+void cryptd_free_ablkcipher(struct cryptd_ablkcipher *tfm)
 {
-	struct cryptd_state *state = data;
-	int stop;
-
-	current->flags |= PF_NOFREEZE;
-
-	do {
-		struct crypto_async_request *req, *backlog;
-
-		mutex_lock(&state->mutex);
-		__set_current_state(TASK_INTERRUPTIBLE);
-
-		spin_lock_bh(&state->lock);
-		backlog = crypto_get_backlog(&state->queue);
-		req = crypto_dequeue_request(&state->queue);
-		spin_unlock_bh(&state->lock);
-
-		stop = kthread_should_stop();
-
-		if (stop || req) {
-			__set_current_state(TASK_RUNNING);
-			if (req) {
-				if (backlog)
-					backlog->complete(backlog,
-							  -EINPROGRESS);
-				req->complete(req, 0);
-			}
-		}
-
-		mutex_unlock(&state->mutex);
-
-		schedule();
-	} while (!stop);
-
-	return 0;
+	crypto_free_ablkcipher(&tfm->base);
 }
+EXPORT_SYMBOL_GPL(cryptd_free_ablkcipher);
 
 static int __init cryptd_init(void)
 {
 	int err;
 
-	err = cryptd_create_thread(&state, cryptd_thread, "cryptd");
+	err = cryptd_init_queue(&queue, CRYPTD_MAX_CPU_QLEN);
 	if (err)
 		return err;
 
 	err = crypto_register_template(&cryptd_tmpl);
 	if (err)
-		kthread_stop(state.task);
+		cryptd_fini_queue(&queue);
 
 	return err;
 }
 
 static void __exit cryptd_exit(void)
 {
-	cryptd_stop_thread(&state);
+	cryptd_fini_queue(&queue);
 	crypto_unregister_template(&cryptd_tmpl);
 }
 
diff --git a/crypto/crypto_wq.c b/crypto/crypto_wq.c
new file mode 100644
index 0000000..fdcf624
--- /dev/null
+++ b/crypto/crypto_wq.c
@@ -0,0 +1,38 @@
+/*
+ * Workqueue for crypto subsystem
+ *
+ * Copyright (c) 2009 Intel Corp.
+ *   Author: Huang Ying <ying.huang@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ *
+ */
+
+#include <linux/workqueue.h>
+#include <crypto/algapi.h>
+#include <crypto/crypto_wq.h>
+
+struct workqueue_struct *kcrypto_wq;
+EXPORT_SYMBOL_GPL(kcrypto_wq);
+
+static int __init crypto_wq_init(void)
+{
+	kcrypto_wq = create_workqueue("crypto");
+	if (unlikely(!kcrypto_wq))
+		return -ENOMEM;
+	return 0;
+}
+
+static void __exit crypto_wq_exit(void)
+{
+	destroy_workqueue(kcrypto_wq);
+}
+
+module_init(crypto_wq_init);
+module_exit(crypto_wq_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("Workqueue for crypto subsystem");
diff --git a/crypto/gf128mul.c b/crypto/gf128mul.c
index ecbeaa1..a90d260 100644
--- a/crypto/gf128mul.c
+++ b/crypto/gf128mul.c
@@ -4,7 +4,7 @@
  * Copyright (c) 2006, Rik Snel <rsnel@cube.dyndns.org>
  *
  * Based on Dr Brian Gladman's (GPL'd) work published at
- * http://fp.gladman.plus.com/cryptography_technology/index.htm
+ * http://gladman.plushost.co.uk/oldsite/cryptography_technology/index.php
  * See the original copyright notice below.
  *
  * This program is free software; you can redistribute it and/or modify it
diff --git a/crypto/internal.h b/crypto/internal.h
index 3c19a27..fc76e1f 100644
--- a/crypto/internal.h
+++ b/crypto/internal.h
@@ -109,8 +109,10 @@ void crypto_alg_tested(const char *name, int err);
 void crypto_shoot_alg(struct crypto_alg *alg);
 struct crypto_tfm *__crypto_alloc_tfm(struct crypto_alg *alg, u32 type,
 				      u32 mask);
-struct crypto_tfm *crypto_create_tfm(struct crypto_alg *alg,
-				     const struct crypto_type *frontend);
+void *crypto_create_tfm(struct crypto_alg *alg,
+			const struct crypto_type *frontend);
+void *crypto_alloc_tfm(const char *alg_name,
+		       const struct crypto_type *frontend, u32 type, u32 mask);
 
 int crypto_register_instance(struct crypto_template *tmpl,
 			     struct crypto_instance *inst);
diff --git a/crypto/lrw.c b/crypto/lrw.c
index 8ef664e..358f80b 100644
--- a/crypto/lrw.c
+++ b/crypto/lrw.c
@@ -45,7 +45,13 @@ struct priv {
 
 static inline void setbit128_bbe(void *b, int bit)
 {
-	__set_bit(bit ^ 0x78, b);
+	__set_bit(bit ^ (0x80 -
+#ifdef __BIG_ENDIAN
+			 BITS_PER_LONG
+#else
+			 BITS_PER_BYTE
+#endif
+			), b);
 }
 
 static int setkey(struct crypto_tfm *parent, const u8 *key,
diff --git a/crypto/pcompress.c b/crypto/pcompress.c
new file mode 100644
index 0000000..ca9a4af
--- /dev/null
+++ b/crypto/pcompress.c
@@ -0,0 +1,97 @@
+/*
+ * Cryptographic API.
+ *
+ * Partial (de)compression operations.
+ *
+ * Copyright 2008 Sony Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.
+ * If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <linux/crypto.h>
+#include <linux/errno.h>
+#include <linux/module.h>
+#include <linux/seq_file.h>
+#include <linux/string.h>
+
+#include <crypto/compress.h>
+
+#include "internal.h"
+
+
+static int crypto_pcomp_init(struct crypto_tfm *tfm, u32 type, u32 mask)
+{
+	return 0;
+}
+
+static unsigned int crypto_pcomp_extsize(struct crypto_alg *alg,
+					 const struct crypto_type *frontend)
+{
+	return alg->cra_ctxsize;
+}
+
+static int crypto_pcomp_init_tfm(struct crypto_tfm *tfm,
+				 const struct crypto_type *frontend)
+{
+	return 0;
+}
+
+static void crypto_pcomp_show(struct seq_file *m, struct crypto_alg *alg)
+	__attribute__ ((unused));
+static void crypto_pcomp_show(struct seq_file *m, struct crypto_alg *alg)
+{
+	seq_printf(m, "type         : pcomp\n");
+}
+
+static const struct crypto_type crypto_pcomp_type = {
+	.extsize	= crypto_pcomp_extsize,
+	.init		= crypto_pcomp_init,
+	.init_tfm	= crypto_pcomp_init_tfm,
+#ifdef CONFIG_PROC_FS
+	.show		= crypto_pcomp_show,
+#endif
+	.maskclear	= ~CRYPTO_ALG_TYPE_MASK,
+	.maskset	= CRYPTO_ALG_TYPE_MASK,
+	.type		= CRYPTO_ALG_TYPE_PCOMPRESS,
+	.tfmsize	= offsetof(struct crypto_pcomp, base),
+};
+
+struct crypto_pcomp *crypto_alloc_pcomp(const char *alg_name, u32 type,
+					u32 mask)
+{
+	return crypto_alloc_tfm(alg_name, &crypto_pcomp_type, type, mask);
+}
+EXPORT_SYMBOL_GPL(crypto_alloc_pcomp);
+
+int crypto_register_pcomp(struct pcomp_alg *alg)
+{
+	struct crypto_alg *base = &alg->base;
+
+	base->cra_type = &crypto_pcomp_type;
+	base->cra_flags &= ~CRYPTO_ALG_TYPE_MASK;
+	base->cra_flags |= CRYPTO_ALG_TYPE_PCOMPRESS;
+
+	return crypto_register_alg(base);
+}
+EXPORT_SYMBOL_GPL(crypto_register_pcomp);
+
+int crypto_unregister_pcomp(struct pcomp_alg *alg)
+{
+	return crypto_unregister_alg(&alg->base);
+}
+EXPORT_SYMBOL_GPL(crypto_unregister_pcomp);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("Partial (de)compression type");
+MODULE_AUTHOR("Sony Corporation");
diff --git a/crypto/scatterwalk.c b/crypto/scatterwalk.c
index 9aeeb52..3de89a4 100644
--- a/crypto/scatterwalk.c
+++ b/crypto/scatterwalk.c
@@ -54,7 +54,8 @@ static void scatterwalk_pagedone(struct scatter_walk *walk, int out,
 		struct page *page;
 
 		page = sg_page(walk->sg) + ((walk->offset - 1) >> PAGE_SHIFT);
-		flush_dcache_page(page);
+		if (!PageSlab(page))
+			flush_dcache_page(page);
 	}
 
 	if (more) {
diff --git a/crypto/sha256_generic.c b/crypto/sha256_generic.c
index caa3542..6349d83 100644
--- a/crypto/sha256_generic.c
+++ b/crypto/sha256_generic.c
@@ -2,7 +2,7 @@
  * Cryptographic API.
  *
  * SHA-256, as specified in
- * http://csrc.nist.gov/cryptval/shs/sha256-384-512.pdf
+ * http://csrc.nist.gov/groups/STM/cavp/documents/shs/sha256-384-512.pdf
  *
  * SHA-256 code by Jean-Luc Cooke <jlcooke@certainkey.com>.
  *
diff --git a/crypto/shash.c b/crypto/shash.c
index c9df367..7a65973 100644
--- a/crypto/shash.c
+++ b/crypto/shash.c
@@ -18,15 +18,10 @@
 #include <linux/slab.h>
 #include <linux/seq_file.h>
 
-static const struct crypto_type crypto_shash_type;
-
-static inline struct crypto_shash *__crypto_shash_cast(struct crypto_tfm *tfm)
-{
-	return container_of(tfm, struct crypto_shash, base);
-}
-
 #include "internal.h"
 
+static const struct crypto_type crypto_shash_type;
+
 static int shash_setkey_unaligned(struct crypto_shash *tfm, const u8 *key,
 				  unsigned int keylen)
 {
@@ -282,8 +277,7 @@ static int crypto_init_shash_ops_async(struct crypto_tfm *tfm)
 	if (!crypto_mod_get(calg))
 		return -EAGAIN;
 
-	shash = __crypto_shash_cast(crypto_create_tfm(
-		calg, &crypto_shash_type));
+	shash = crypto_create_tfm(calg, &crypto_shash_type);
 	if (IS_ERR(shash)) {
 		crypto_mod_put(calg);
 		return PTR_ERR(shash);
@@ -388,10 +382,14 @@ static int crypto_init_shash_ops_compat(struct crypto_tfm *tfm)
 	struct shash_desc *desc = crypto_tfm_ctx(tfm);
 	struct crypto_shash *shash;
 
-	shash = __crypto_shash_cast(crypto_create_tfm(
-		calg, &crypto_shash_type));
-	if (IS_ERR(shash))
+	if (!crypto_mod_get(calg))
+		return -EAGAIN;
+
+	shash = crypto_create_tfm(calg, &crypto_shash_type);
+	if (IS_ERR(shash)) {
+		crypto_mod_put(calg);
 		return PTR_ERR(shash);
+	}
 
 	desc->tfm = shash;
 	tfm->exit = crypto_exit_shash_ops_compat;
@@ -437,8 +435,6 @@ static unsigned int crypto_shash_ctxsize(struct crypto_alg *alg, u32 type,
 static int crypto_shash_init_tfm(struct crypto_tfm *tfm,
 				 const struct crypto_type *frontend)
 {
-	if (frontend->type != CRYPTO_ALG_TYPE_SHASH)
-		return -EINVAL;
 	return 0;
 }
 
@@ -477,8 +473,7 @@ static const struct crypto_type crypto_shash_type = {
 struct crypto_shash *crypto_alloc_shash(const char *alg_name, u32 type,
 					u32 mask)
 {
-	return __crypto_shash_cast(
-		crypto_alloc_tfm(alg_name, &crypto_shash_type, type, mask));
+	return crypto_alloc_tfm(alg_name, &crypto_shash_type, type, mask);
 }
 EXPORT_SYMBOL_GPL(crypto_alloc_shash);
 
diff --git a/crypto/tcrypt.c b/crypto/tcrypt.c
index 28a45a1e..c3c9124 100644
--- a/crypto/tcrypt.c
+++ b/crypto/tcrypt.c
@@ -53,7 +53,7 @@ static char *check[] = {
 	"cast6", "arc4", "michael_mic", "deflate", "crc32c", "tea", "xtea",
 	"khazad", "wp512", "wp384", "wp256", "tnepres", "xeta",  "fcrypt",
 	"camellia", "seed", "salsa20", "rmd128", "rmd160", "rmd256", "rmd320",
-	"lzo", "cts", NULL
+	"lzo", "cts", "zlib", NULL
 };
 
 static int test_cipher_jiffies(struct blkcipher_desc *desc, int enc,
@@ -661,6 +661,10 @@ static void do_test(int m)
 		tcrypt_test("ecb(seed)");
 		break;
 
+	case 44:
+		tcrypt_test("zlib");
+		break;
+
 	case 100:
 		tcrypt_test("hmac(md5)");
 		break;
diff --git a/crypto/testmgr.c b/crypto/testmgr.c
index a75f11f..b50c3c6 100644
--- a/crypto/testmgr.c
+++ b/crypto/testmgr.c
@@ -72,6 +72,13 @@ struct comp_test_suite {
 	} comp, decomp;
 };
 
+struct pcomp_test_suite {
+	struct {
+		struct pcomp_testvec *vecs;
+		unsigned int count;
+	} comp, decomp;
+};
+
 struct hash_test_suite {
 	struct hash_testvec *vecs;
 	unsigned int count;
@@ -86,6 +93,7 @@ struct alg_test_desc {
 		struct aead_test_suite aead;
 		struct cipher_test_suite cipher;
 		struct comp_test_suite comp;
+		struct pcomp_test_suite pcomp;
 		struct hash_test_suite hash;
 	} suite;
 };
@@ -898,6 +906,159 @@ out:
 	return ret;
 }
 
+static int test_pcomp(struct crypto_pcomp *tfm,
+		      struct pcomp_testvec *ctemplate,
+		      struct pcomp_testvec *dtemplate, int ctcount,
+		      int dtcount)
+{
+	const char *algo = crypto_tfm_alg_driver_name(crypto_pcomp_tfm(tfm));
+	unsigned int i;
+	char result[COMP_BUF_SIZE];
+	int error;
+
+	for (i = 0; i < ctcount; i++) {
+		struct comp_request req;
+
+		error = crypto_compress_setup(tfm, ctemplate[i].params,
+					      ctemplate[i].paramsize);
+		if (error) {
+			pr_err("alg: pcomp: compression setup failed on test "
+			       "%d for %s: error=%d\n", i + 1, algo, error);
+			return error;
+		}
+
+		error = crypto_compress_init(tfm);
+		if (error) {
+			pr_err("alg: pcomp: compression init failed on test "
+			       "%d for %s: error=%d\n", i + 1, algo, error);
+			return error;
+		}
+
+		memset(result, 0, sizeof(result));
+
+		req.next_in = ctemplate[i].input;
+		req.avail_in = ctemplate[i].inlen / 2;
+		req.next_out = result;
+		req.avail_out = ctemplate[i].outlen / 2;
+
+		error = crypto_compress_update(tfm, &req);
+		if (error && (error != -EAGAIN || req.avail_in)) {
+			pr_err("alg: pcomp: compression update failed on test "
+			       "%d for %s: error=%d\n", i + 1, algo, error);
+			return error;
+		}
+
+		/* Add remaining input data */
+		req.avail_in += (ctemplate[i].inlen + 1) / 2;
+
+		error = crypto_compress_update(tfm, &req);
+		if (error && (error != -EAGAIN || req.avail_in)) {
+			pr_err("alg: pcomp: compression update failed on test "
+			       "%d for %s: error=%d\n", i + 1, algo, error);
+			return error;
+		}
+
+		/* Provide remaining output space */
+		req.avail_out += COMP_BUF_SIZE - ctemplate[i].outlen / 2;
+
+		error = crypto_compress_final(tfm, &req);
+		if (error) {
+			pr_err("alg: pcomp: compression final failed on test "
+			       "%d for %s: error=%d\n", i + 1, algo, error);
+			return error;
+		}
+
+		if (COMP_BUF_SIZE - req.avail_out != ctemplate[i].outlen) {
+			pr_err("alg: comp: Compression test %d failed for %s: "
+			       "output len = %d (expected %d)\n", i + 1, algo,
+			       COMP_BUF_SIZE - req.avail_out,
+			       ctemplate[i].outlen);
+			return -EINVAL;
+		}
+
+		if (memcmp(result, ctemplate[i].output, ctemplate[i].outlen)) {
+			pr_err("alg: pcomp: Compression test %d failed for "
+			       "%s\n", i + 1, algo);
+			hexdump(result, ctemplate[i].outlen);
+			return -EINVAL;
+		}
+	}
+
+	for (i = 0; i < dtcount; i++) {
+		struct comp_request req;
+
+		error = crypto_decompress_setup(tfm, dtemplate[i].params,
+						dtemplate[i].paramsize);
+		if (error) {
+			pr_err("alg: pcomp: decompression setup failed on "
+			       "test %d for %s: error=%d\n", i + 1, algo,
+			       error);
+			return error;
+		}
+
+		error = crypto_decompress_init(tfm);
+		if (error) {
+			pr_err("alg: pcomp: decompression init failed on test "
+			       "%d for %s: error=%d\n", i + 1, algo, error);
+			return error;
+		}
+
+		memset(result, 0, sizeof(result));
+
+		req.next_in = dtemplate[i].input;
+		req.avail_in = dtemplate[i].inlen / 2;
+		req.next_out = result;
+		req.avail_out = dtemplate[i].outlen / 2;
+
+		error = crypto_decompress_update(tfm, &req);
+		if (error  && (error != -EAGAIN || req.avail_in)) {
+			pr_err("alg: pcomp: decompression update failed on "
+			       "test %d for %s: error=%d\n", i + 1, algo,
+			       error);
+			return error;
+		}
+
+		/* Add remaining input data */
+		req.avail_in += (dtemplate[i].inlen + 1) / 2;
+
+		error = crypto_decompress_update(tfm, &req);
+		if (error  && (error != -EAGAIN || req.avail_in)) {
+			pr_err("alg: pcomp: decompression update failed on "
+			       "test %d for %s: error=%d\n", i + 1, algo,
+			       error);
+			return error;
+		}
+
+		/* Provide remaining output space */
+		req.avail_out += COMP_BUF_SIZE - dtemplate[i].outlen / 2;
+
+		error = crypto_decompress_final(tfm, &req);
+		if (error  && (error != -EAGAIN || req.avail_in)) {
+			pr_err("alg: pcomp: decompression final failed on "
+			       "test %d for %s: error=%d\n", i + 1, algo,
+			       error);
+			return error;
+		}
+
+		if (COMP_BUF_SIZE - req.avail_out != dtemplate[i].outlen) {
+			pr_err("alg: comp: Decompression test %d failed for "
+			       "%s: output len = %d (expected %d)\n", i + 1,
+			       algo, COMP_BUF_SIZE - req.avail_out,
+			       dtemplate[i].outlen);
+			return -EINVAL;
+		}
+
+		if (memcmp(result, dtemplate[i].output, dtemplate[i].outlen)) {
+			pr_err("alg: pcomp: Decompression test %d failed for "
+			       "%s\n", i + 1, algo);
+			hexdump(result, dtemplate[i].outlen);
+			return -EINVAL;
+		}
+	}
+
+	return 0;
+}
+
 static int alg_test_aead(const struct alg_test_desc *desc, const char *driver,
 			 u32 type, u32 mask)
 {
@@ -1007,6 +1168,28 @@ static int alg_test_comp(const struct alg_test_desc *desc, const char *driver,
 	return err;
 }
 
+static int alg_test_pcomp(const struct alg_test_desc *desc, const char *driver,
+			  u32 type, u32 mask)
+{
+	struct crypto_pcomp *tfm;
+	int err;
+
+	tfm = crypto_alloc_pcomp(driver, type, mask);
+	if (IS_ERR(tfm)) {
+		pr_err("alg: pcomp: Failed to load transform for %s: %ld\n",
+		       driver, PTR_ERR(tfm));
+		return PTR_ERR(tfm);
+	}
+
+	err = test_pcomp(tfm, desc->suite.pcomp.comp.vecs,
+			 desc->suite.pcomp.decomp.vecs,
+			 desc->suite.pcomp.comp.count,
+			 desc->suite.pcomp.decomp.count);
+
+	crypto_free_pcomp(tfm);
+	return err;
+}
+
 static int alg_test_hash(const struct alg_test_desc *desc, const char *driver,
 			 u32 type, u32 mask)
 {
@@ -1835,6 +2018,21 @@ static const struct alg_test_desc alg_test_descs[] = {
 				}
 			}
 		}
+	}, {
+		.alg = "zlib",
+		.test = alg_test_pcomp,
+		.suite = {
+			.pcomp = {
+				.comp = {
+					.vecs = zlib_comp_tv_template,
+					.count = ZLIB_COMP_TEST_VECTORS
+				},
+				.decomp = {
+					.vecs = zlib_decomp_tv_template,
+					.count = ZLIB_DECOMP_TEST_VECTORS
+				}
+			}
+		}
 	}
 };
 
diff --git a/crypto/testmgr.h b/crypto/testmgr.h
index 132953e..526f00a 100644
--- a/crypto/testmgr.h
+++ b/crypto/testmgr.h
@@ -15,6 +15,11 @@
 #ifndef _CRYPTO_TESTMGR_H
 #define _CRYPTO_TESTMGR_H
 
+#include <linux/netlink.h>
+#include <linux/zlib.h>
+
+#include <crypto/compress.h>
+
 #define MAX_DIGEST_SIZE		64
 #define MAX_TAP			8
 
@@ -8347,10 +8352,19 @@ struct comp_testvec {
 	char output[COMP_BUF_SIZE];
 };
 
+struct pcomp_testvec {
+	void *params;
+	unsigned int paramsize;
+	int inlen, outlen;
+	char input[COMP_BUF_SIZE];
+	char output[COMP_BUF_SIZE];
+};
+
 /*
  * Deflate test vectors (null-terminated strings).
  * Params: winbits=-11, Z_DEFAULT_COMPRESSION, MAX_MEM_LEVEL.
  */
+
 #define DEFLATE_COMP_TEST_VECTORS 2
 #define DEFLATE_DECOMP_TEST_VECTORS 2
 
@@ -8426,6 +8440,139 @@ static struct comp_testvec deflate_decomp_tv_template[] = {
 	},
 };
 
+#define ZLIB_COMP_TEST_VECTORS 2
+#define ZLIB_DECOMP_TEST_VECTORS 2
+
+static const struct {
+	struct nlattr nla;
+	int val;
+} deflate_comp_params[] = {
+	{
+		.nla = {
+			.nla_len	= NLA_HDRLEN + sizeof(int),
+			.nla_type	= ZLIB_COMP_LEVEL,
+		},
+		.val			= Z_DEFAULT_COMPRESSION,
+	}, {
+		.nla = {
+			.nla_len	= NLA_HDRLEN + sizeof(int),
+			.nla_type	= ZLIB_COMP_METHOD,
+		},
+		.val			= Z_DEFLATED,
+	}, {
+		.nla = {
+			.nla_len	= NLA_HDRLEN + sizeof(int),
+			.nla_type	= ZLIB_COMP_WINDOWBITS,
+		},
+		.val			= -11,
+	}, {
+		.nla = {
+			.nla_len	= NLA_HDRLEN + sizeof(int),
+			.nla_type	= ZLIB_COMP_MEMLEVEL,
+		},
+		.val			= MAX_MEM_LEVEL,
+	}, {
+		.nla = {
+			.nla_len	= NLA_HDRLEN + sizeof(int),
+			.nla_type	= ZLIB_COMP_STRATEGY,
+		},
+		.val			= Z_DEFAULT_STRATEGY,
+	}
+};
+
+static const struct {
+	struct nlattr nla;
+	int val;
+} deflate_decomp_params[] = {
+	{
+		.nla = {
+			.nla_len	= NLA_HDRLEN + sizeof(int),
+			.nla_type	= ZLIB_DECOMP_WINDOWBITS,
+		},
+		.val			= -11,
+	}
+};
+
+static struct pcomp_testvec zlib_comp_tv_template[] = {
+	{
+		.params = &deflate_comp_params,
+		.paramsize = sizeof(deflate_comp_params),
+		.inlen	= 70,
+		.outlen	= 38,
+		.input	= "Join us now and share the software "
+			"Join us now and share the software ",
+		.output	= "\xf3\xca\xcf\xcc\x53\x28\x2d\x56"
+			  "\xc8\xcb\x2f\x57\x48\xcc\x4b\x51"
+			  "\x28\xce\x48\x2c\x4a\x55\x28\xc9"
+			  "\x48\x55\x28\xce\x4f\x2b\x29\x07"
+			  "\x71\xbc\x08\x2b\x01\x00",
+	}, {
+		.params = &deflate_comp_params,
+		.paramsize = sizeof(deflate_comp_params),
+		.inlen	= 191,
+		.outlen	= 122,
+		.input	= "This document describes a compression method based on the DEFLATE"
+			"compression algorithm.  This document defines the application of "
+			"the DEFLATE algorithm to the IP Payload Compression Protocol.",
+		.output	= "\x5d\x8d\x31\x0e\xc2\x30\x10\x04"
+			  "\xbf\xb2\x2f\xc8\x1f\x10\x04\x09"
+			  "\x89\xc2\x85\x3f\x70\xb1\x2f\xf8"
+			  "\x24\xdb\x67\xd9\x47\xc1\xef\x49"
+			  "\x68\x12\x51\xae\x76\x67\xd6\x27"
+			  "\x19\x88\x1a\xde\x85\xab\x21\xf2"
+			  "\x08\x5d\x16\x1e\x20\x04\x2d\xad"
+			  "\xf3\x18\xa2\x15\x85\x2d\x69\xc4"
+			  "\x42\x83\x23\xb6\x6c\x89\x71\x9b"
+			  "\xef\xcf\x8b\x9f\xcf\x33\xca\x2f"
+			  "\xed\x62\xa9\x4c\x80\xff\x13\xaf"
+			  "\x52\x37\xed\x0e\x52\x6b\x59\x02"
+			  "\xd9\x4e\xe8\x7a\x76\x1d\x02\x98"
+			  "\xfe\x8a\x87\x83\xa3\x4f\x56\x8a"
+			  "\xb8\x9e\x8e\x5c\x57\xd3\xa0\x79"
+			  "\xfa\x02",
+	},
+};
+
+static struct pcomp_testvec zlib_decomp_tv_template[] = {
+	{
+		.params = &deflate_decomp_params,
+		.paramsize = sizeof(deflate_decomp_params),
+		.inlen	= 122,
+		.outlen	= 191,
+		.input	= "\x5d\x8d\x31\x0e\xc2\x30\x10\x04"
+			  "\xbf\xb2\x2f\xc8\x1f\x10\x04\x09"
+			  "\x89\xc2\x85\x3f\x70\xb1\x2f\xf8"
+			  "\x24\xdb\x67\xd9\x47\xc1\xef\x49"
+			  "\x68\x12\x51\xae\x76\x67\xd6\x27"
+			  "\x19\x88\x1a\xde\x85\xab\x21\xf2"
+			  "\x08\x5d\x16\x1e\x20\x04\x2d\xad"
+			  "\xf3\x18\xa2\x15\x85\x2d\x69\xc4"
+			  "\x42\x83\x23\xb6\x6c\x89\x71\x9b"
+			  "\xef\xcf\x8b\x9f\xcf\x33\xca\x2f"
+			  "\xed\x62\xa9\x4c\x80\xff\x13\xaf"
+			  "\x52\x37\xed\x0e\x52\x6b\x59\x02"
+			  "\xd9\x4e\xe8\x7a\x76\x1d\x02\x98"
+			  "\xfe\x8a\x87\x83\xa3\x4f\x56\x8a"
+			  "\xb8\x9e\x8e\x5c\x57\xd3\xa0\x79"
+			  "\xfa\x02",
+		.output	= "This document describes a compression method based on the DEFLATE"
+			"compression algorithm.  This document defines the application of "
+			"the DEFLATE algorithm to the IP Payload Compression Protocol.",
+	}, {
+		.params = &deflate_decomp_params,
+		.paramsize = sizeof(deflate_decomp_params),
+		.inlen	= 38,
+		.outlen	= 70,
+		.input	= "\xf3\xca\xcf\xcc\x53\x28\x2d\x56"
+			  "\xc8\xcb\x2f\x57\x48\xcc\x4b\x51"
+			  "\x28\xce\x48\x2c\x4a\x55\x28\xc9"
+			  "\x48\x55\x28\xce\x4f\x2b\x29\x07"
+			  "\x71\xbc\x08\x2b\x01\x00",
+		.output	= "Join us now and share the software "
+			"Join us now and share the software ",
+	},
+};
+
 /*
  * LZO test vectors (null-terminated strings).
  */
diff --git a/crypto/zlib.c b/crypto/zlib.c
new file mode 100644
index 0000000..33609ba
--- /dev/null
+++ b/crypto/zlib.c
@@ -0,0 +1,378 @@
+/*
+ * Cryptographic API.
+ *
+ * Zlib algorithm
+ *
+ * Copyright 2008 Sony Corporation
+ *
+ * Based on deflate.c, which is
+ * Copyright (c) 2003 James Morris <jmorris@intercode.com.au>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ *
+ * FIXME: deflate transforms will require up to a total of about 436k of kernel
+ * memory on i386 (390k for compression, the rest for decompression), as the
+ * current zlib kernel code uses a worst case pre-allocation system by default.
+ * This needs to be fixed so that the amount of memory required is properly
+ * related to the winbits and memlevel parameters.
+ */
+
+#define pr_fmt(fmt)	"%s: " fmt, __func__
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/zlib.h>
+#include <linux/vmalloc.h>
+#include <linux/interrupt.h>
+#include <linux/mm.h>
+#include <linux/net.h>
+#include <linux/slab.h>
+
+#include <crypto/internal/compress.h>
+
+#include <net/netlink.h>
+
+
+struct zlib_ctx {
+	struct z_stream_s comp_stream;
+	struct z_stream_s decomp_stream;
+	int decomp_windowBits;
+};
+
+
+static void zlib_comp_exit(struct zlib_ctx *ctx)
+{
+	struct z_stream_s *stream = &ctx->comp_stream;
+
+	if (stream->workspace) {
+		zlib_deflateEnd(stream);
+		vfree(stream->workspace);
+		stream->workspace = NULL;
+	}
+}
+
+static void zlib_decomp_exit(struct zlib_ctx *ctx)
+{
+	struct z_stream_s *stream = &ctx->decomp_stream;
+
+	if (stream->workspace) {
+		zlib_inflateEnd(stream);
+		kfree(stream->workspace);
+		stream->workspace = NULL;
+	}
+}
+
+static int zlib_init(struct crypto_tfm *tfm)
+{
+	return 0;
+}
+
+static void zlib_exit(struct crypto_tfm *tfm)
+{
+	struct zlib_ctx *ctx = crypto_tfm_ctx(tfm);
+
+	zlib_comp_exit(ctx);
+	zlib_decomp_exit(ctx);
+}
+
+
+static int zlib_compress_setup(struct crypto_pcomp *tfm, void *params,
+			       unsigned int len)
+{
+	struct zlib_ctx *ctx = crypto_tfm_ctx(crypto_pcomp_tfm(tfm));
+	struct z_stream_s *stream = &ctx->comp_stream;
+	struct nlattr *tb[ZLIB_COMP_MAX + 1];
+	size_t workspacesize;
+	int ret;
+
+	ret = nla_parse(tb, ZLIB_COMP_MAX, params, len, NULL);
+	if (ret)
+		return ret;
+
+	zlib_comp_exit(ctx);
+
+	workspacesize = zlib_deflate_workspacesize();
+	stream->workspace = vmalloc(workspacesize);
+	if (!stream->workspace)
+		return -ENOMEM;
+
+	memset(stream->workspace, 0, workspacesize);
+	ret = zlib_deflateInit2(stream,
+				tb[ZLIB_COMP_LEVEL]
+					? nla_get_u32(tb[ZLIB_COMP_LEVEL])
+					: Z_DEFAULT_COMPRESSION,
+				tb[ZLIB_COMP_METHOD]
+					? nla_get_u32(tb[ZLIB_COMP_METHOD])
+					: Z_DEFLATED,
+				tb[ZLIB_COMP_WINDOWBITS]
+					? nla_get_u32(tb[ZLIB_COMP_WINDOWBITS])
+					: MAX_WBITS,
+				tb[ZLIB_COMP_MEMLEVEL]
+					? nla_get_u32(tb[ZLIB_COMP_MEMLEVEL])
+					: DEF_MEM_LEVEL,
+				tb[ZLIB_COMP_STRATEGY]
+					? nla_get_u32(tb[ZLIB_COMP_STRATEGY])
+					: Z_DEFAULT_STRATEGY);
+	if (ret != Z_OK) {
+		vfree(stream->workspace);
+		stream->workspace = NULL;
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int zlib_compress_init(struct crypto_pcomp *tfm)
+{
+	int ret;
+	struct zlib_ctx *dctx = crypto_tfm_ctx(crypto_pcomp_tfm(tfm));
+	struct z_stream_s *stream = &dctx->comp_stream;
+
+	ret = zlib_deflateReset(stream);
+	if (ret != Z_OK)
+		return -EINVAL;
+
+	return 0;
+}
+
+static int zlib_compress_update(struct crypto_pcomp *tfm,
+				struct comp_request *req)
+{
+	int ret;
+	struct zlib_ctx *dctx = crypto_tfm_ctx(crypto_pcomp_tfm(tfm));
+	struct z_stream_s *stream = &dctx->comp_stream;
+
+	pr_debug("avail_in %u, avail_out %u\n", req->avail_in, req->avail_out);
+	stream->next_in = req->next_in;
+	stream->avail_in = req->avail_in;
+	stream->next_out = req->next_out;
+	stream->avail_out = req->avail_out;
+
+	ret = zlib_deflate(stream, Z_NO_FLUSH);
+	switch (ret) {
+	case Z_OK:
+		break;
+
+	case Z_BUF_ERROR:
+		pr_debug("zlib_deflate could not make progress\n");
+		return -EAGAIN;
+
+	default:
+		pr_debug("zlib_deflate failed %d\n", ret);
+		return -EINVAL;
+	}
+
+	pr_debug("avail_in %u, avail_out %u (consumed %u, produced %u)\n",
+		 stream->avail_in, stream->avail_out,
+		 req->avail_in - stream->avail_in,
+		 req->avail_out - stream->avail_out);
+	req->next_in = stream->next_in;
+	req->avail_in = stream->avail_in;
+	req->next_out = stream->next_out;
+	req->avail_out = stream->avail_out;
+	return 0;
+}
+
+static int zlib_compress_final(struct crypto_pcomp *tfm,
+			       struct comp_request *req)
+{
+	int ret;
+	struct zlib_ctx *dctx = crypto_tfm_ctx(crypto_pcomp_tfm(tfm));
+	struct z_stream_s *stream = &dctx->comp_stream;
+
+	pr_debug("avail_in %u, avail_out %u\n", req->avail_in, req->avail_out);
+	stream->next_in = req->next_in;
+	stream->avail_in = req->avail_in;
+	stream->next_out = req->next_out;
+	stream->avail_out = req->avail_out;
+
+	ret = zlib_deflate(stream, Z_FINISH);
+	if (ret != Z_STREAM_END) {
+		pr_debug("zlib_deflate failed %d\n", ret);
+		return -EINVAL;
+	}
+
+	pr_debug("avail_in %u, avail_out %u (consumed %u, produced %u)\n",
+		 stream->avail_in, stream->avail_out,
+		 req->avail_in - stream->avail_in,
+		 req->avail_out - stream->avail_out);
+	req->next_in = stream->next_in;
+	req->avail_in = stream->avail_in;
+	req->next_out = stream->next_out;
+	req->avail_out = stream->avail_out;
+	return 0;
+}
+
+
+static int zlib_decompress_setup(struct crypto_pcomp *tfm, void *params,
+				 unsigned int len)
+{
+	struct zlib_ctx *ctx = crypto_tfm_ctx(crypto_pcomp_tfm(tfm));
+	struct z_stream_s *stream = &ctx->decomp_stream;
+	struct nlattr *tb[ZLIB_DECOMP_MAX + 1];
+	int ret = 0;
+
+	ret = nla_parse(tb, ZLIB_DECOMP_MAX, params, len, NULL);
+	if (ret)
+		return ret;
+
+	zlib_decomp_exit(ctx);
+
+	ctx->decomp_windowBits = tb[ZLIB_DECOMP_WINDOWBITS]
+				 ? nla_get_u32(tb[ZLIB_DECOMP_WINDOWBITS])
+				 : DEF_WBITS;
+
+	stream->workspace = kzalloc(zlib_inflate_workspacesize(), GFP_KERNEL);
+	if (!stream->workspace)
+		return -ENOMEM;
+
+	ret = zlib_inflateInit2(stream, ctx->decomp_windowBits);
+	if (ret != Z_OK) {
+		kfree(stream->workspace);
+		stream->workspace = NULL;
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int zlib_decompress_init(struct crypto_pcomp *tfm)
+{
+	int ret;
+	struct zlib_ctx *dctx = crypto_tfm_ctx(crypto_pcomp_tfm(tfm));
+	struct z_stream_s *stream = &dctx->decomp_stream;
+
+	ret = zlib_inflateReset(stream);
+	if (ret != Z_OK)
+		return -EINVAL;
+
+	return 0;
+}
+
+static int zlib_decompress_update(struct crypto_pcomp *tfm,
+				  struct comp_request *req)
+{
+	int ret;
+	struct zlib_ctx *dctx = crypto_tfm_ctx(crypto_pcomp_tfm(tfm));
+	struct z_stream_s *stream = &dctx->decomp_stream;
+
+	pr_debug("avail_in %u, avail_out %u\n", req->avail_in, req->avail_out);
+	stream->next_in = req->next_in;
+	stream->avail_in = req->avail_in;
+	stream->next_out = req->next_out;
+	stream->avail_out = req->avail_out;
+
+	ret = zlib_inflate(stream, Z_SYNC_FLUSH);
+	switch (ret) {
+	case Z_OK:
+	case Z_STREAM_END:
+		break;
+
+	case Z_BUF_ERROR:
+		pr_debug("zlib_inflate could not make progress\n");
+		return -EAGAIN;
+
+	default:
+		pr_debug("zlib_inflate failed %d\n", ret);
+		return -EINVAL;
+	}
+
+	pr_debug("avail_in %u, avail_out %u (consumed %u, produced %u)\n",
+		 stream->avail_in, stream->avail_out,
+		 req->avail_in - stream->avail_in,
+		 req->avail_out - stream->avail_out);
+	req->next_in = stream->next_in;
+	req->avail_in = stream->avail_in;
+	req->next_out = stream->next_out;
+	req->avail_out = stream->avail_out;
+	return 0;
+}
+
+static int zlib_decompress_final(struct crypto_pcomp *tfm,
+				 struct comp_request *req)
+{
+	int ret;
+	struct zlib_ctx *dctx = crypto_tfm_ctx(crypto_pcomp_tfm(tfm));
+	struct z_stream_s *stream = &dctx->decomp_stream;
+
+	pr_debug("avail_in %u, avail_out %u\n", req->avail_in, req->avail_out);
+	stream->next_in = req->next_in;
+	stream->avail_in = req->avail_in;
+	stream->next_out = req->next_out;
+	stream->avail_out = req->avail_out;
+
+	if (dctx->decomp_windowBits < 0) {
+		ret = zlib_inflate(stream, Z_SYNC_FLUSH);
+		/*
+		 * Work around a bug in zlib, which sometimes wants to taste an
+		 * extra byte when being used in the (undocumented) raw deflate
+		 * mode. (From USAGI).
+		 */
+		if (ret == Z_OK && !stream->avail_in && stream->avail_out) {
+			const void *saved_next_in = stream->next_in;
+			u8 zerostuff = 0;
+
+			stream->next_in = &zerostuff;
+			stream->avail_in = 1;
+			ret = zlib_inflate(stream, Z_FINISH);
+			stream->next_in = saved_next_in;
+			stream->avail_in = 0;
+		}
+	} else
+		ret = zlib_inflate(stream, Z_FINISH);
+	if (ret != Z_STREAM_END) {
+		pr_debug("zlib_inflate failed %d\n", ret);
+		return -EINVAL;
+	}
+
+	pr_debug("avail_in %u, avail_out %u (consumed %u, produced %u)\n",
+		 stream->avail_in, stream->avail_out,
+		 req->avail_in - stream->avail_in,
+		 req->avail_out - stream->avail_out);
+	req->next_in = stream->next_in;
+	req->avail_in = stream->avail_in;
+	req->next_out = stream->next_out;
+	req->avail_out = stream->avail_out;
+	return 0;
+}
+
+
+static struct pcomp_alg zlib_alg = {
+	.compress_setup		= zlib_compress_setup,
+	.compress_init		= zlib_compress_init,
+	.compress_update	= zlib_compress_update,
+	.compress_final		= zlib_compress_final,
+	.decompress_setup	= zlib_decompress_setup,
+	.decompress_init	= zlib_decompress_init,
+	.decompress_update	= zlib_decompress_update,
+	.decompress_final	= zlib_decompress_final,
+
+	.base			= {
+		.cra_name	= "zlib",
+		.cra_flags	= CRYPTO_ALG_TYPE_PCOMPRESS,
+		.cra_ctxsize	= sizeof(struct zlib_ctx),
+		.cra_module	= THIS_MODULE,
+		.cra_init	= zlib_init,
+		.cra_exit	= zlib_exit,
+	}
+};
+
+static int __init zlib_mod_init(void)
+{
+	return crypto_register_pcomp(&zlib_alg);
+}
+
+static void __exit zlib_mod_fini(void)
+{
+	crypto_unregister_pcomp(&zlib_alg);
+}
+
+module_init(zlib_mod_init);
+module_exit(zlib_mod_fini);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("Zlib Compression Algorithm");
+MODULE_AUTHOR("Sony Corporation");