* [PATCH v4 00/10] crypto: asynchronous compression api
@ 2016-05-31 13:55 Giovanni Cabiddu
2016-05-31 13:55 ` [PATCH v4 01/10] crypto: shrink hash down to two types Giovanni Cabiddu
` (9 more replies)
0 siblings, 10 replies; 13+ messages in thread
From: Giovanni Cabiddu @ 2016-05-31 13:55 UTC (permalink / raw)
To: herbert; +Cc: linux-crypto, Giovanni Cabiddu
The following patch set introduces acomp, a generic asynchronous
(de)compression api with support for SG lists.
We propose a new crypto type called crypto_acomp_type, a new struct acomp_alg
and struct crypto_acomp, together with number of helper functions to register
acomp type algorithms and allocate tfm instances.
This interface will allow the following operations:
int (*compress)(struct acomp_req *req);
int (*decompress)(struct acomp_req *req);
Together with acomp we propose a new driver-side interface, scomp, which
handles compression implementations which use linear buffers. We converted all
compression algorithms available in LKCF to use this interface so that those
algorithms will be accessible through the acomp api.
Finally we propose qdecomp, a simple decompression api for algorithms
which do not need work space for performing decompression operations.
Changes in v4:
- added qdecompress api, a front-end for decompression algorithms which
do not need additional vmalloc work space
Changes in v3:
- added driver-side scomp interface
- provided support for lzo, lz4, lz4hc, 842, deflate compression algorithms
via the acomp api (through scomp)
- extended testmgr to support acomp
- removed extended acomp api for supporting deflate algorithm parameters
(will be enhanced and re-proposed in future)
Note that (2) to (7) are a rework of Joonsoo Kim's scomp patches.
Changes in v2:
- added compression and decompression request sizes in acomp_alg
in order to enable noctx support
- extended api with helpers to allocate compression and
decompression requests
Changes from initial submit:
- added consumed and produced fields to acomp_req
- extended api to support configuration of deflate compressors
---
Giovanni Cabiddu (10):
crypto: shrink hash down to two types
crypto: add asynchronous compression api
crypto: add driver-side scomp interface
crypto: add quick decompression api
crypto: acomp - add support for lzo via scomp
crypto: acomp - add support for lz4 via scomp
crypto: acomp - add support for lz4hc via scomp
crypto: acomp - add support for 842 via scomp
crypto: acomp - add support for deflate via scomp
crypto: acomp - update testmgr with support for acomp
crypto/842.c | 82 ++++++++-
crypto/Kconfig | 15 ++
crypto/Makefile | 4 +
crypto/acompress.c | 209 ++++++++++++++++++++
crypto/crypto_user.c | 21 ++
crypto/deflate.c | 111 ++++++++++-
crypto/lz4.c | 91 ++++++++-
crypto/lz4hc.c | 92 ++++++++-
crypto/lzo.c | 97 ++++++++--
crypto/qdecompress.c | 93 +++++++++
crypto/scompress.c | 345 +++++++++++++++++++++++++++++++++
crypto/testmgr.c | 158 ++++++++++++++--
include/crypto/acompress.h | 251 ++++++++++++++++++++++++
include/crypto/internal/acompress.h | 97 +++++++++
include/crypto/internal/qdecompress.h | 22 ++
include/crypto/internal/scompress.h | 148 ++++++++++++++
include/crypto/qdecompress.h | 204 +++++++++++++++++++
include/linux/crypto.h | 17 ++-
18 files changed, 1991 insertions(+), 66 deletions(-)
create mode 100644 crypto/acompress.c
create mode 100644 crypto/qdecompress.c
create mode 100644 crypto/scompress.c
create mode 100644 include/crypto/acompress.h
create mode 100644 include/crypto/internal/acompress.h
create mode 100644 include/crypto/internal/qdecompress.h
create mode 100644 include/crypto/internal/scompress.h
create mode 100644 include/crypto/qdecompress.h
--
1.7.4.1
^ permalink raw reply [flat|nested] 13+ messages in thread
* [PATCH v4 01/10] crypto: shrink hash down to two types
2016-05-31 13:55 [PATCH v4 00/10] crypto: asynchronous compression api Giovanni Cabiddu
@ 2016-05-31 13:55 ` Giovanni Cabiddu
2016-05-31 13:55 ` [PATCH v4 02/10] crypto: add asynchronous compression api Giovanni Cabiddu
` (8 subsequent siblings)
9 siblings, 0 replies; 13+ messages in thread
From: Giovanni Cabiddu @ 2016-05-31 13:55 UTC (permalink / raw)
To: herbert; +Cc: linux-crypto, Giovanni Cabiddu
Move hash to 0xe to free up the space for acomp/scomp/qdecomp
Signed-off-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
---
include/linux/crypto.h | 10 +++++-----
1 files changed, 5 insertions(+), 5 deletions(-)
diff --git a/include/linux/crypto.h b/include/linux/crypto.h
index 6e28c89..d844cbc 100644
--- a/include/linux/crypto.h
+++ b/include/linux/crypto.h
@@ -48,15 +48,15 @@
#define CRYPTO_ALG_TYPE_BLKCIPHER 0x00000004
#define CRYPTO_ALG_TYPE_ABLKCIPHER 0x00000005
#define CRYPTO_ALG_TYPE_GIVCIPHER 0x00000006
-#define CRYPTO_ALG_TYPE_DIGEST 0x00000008
-#define CRYPTO_ALG_TYPE_HASH 0x00000008
-#define CRYPTO_ALG_TYPE_SHASH 0x00000009
-#define CRYPTO_ALG_TYPE_AHASH 0x0000000a
#define CRYPTO_ALG_TYPE_RNG 0x0000000c
#define CRYPTO_ALG_TYPE_AKCIPHER 0x0000000d
+#define CRYPTO_ALG_TYPE_DIGEST 0x0000000e
+#define CRYPTO_ALG_TYPE_HASH 0x0000000e
+#define CRYPTO_ALG_TYPE_SHASH 0x0000000e
+#define CRYPTO_ALG_TYPE_AHASH 0x0000000f
#define CRYPTO_ALG_TYPE_HASH_MASK 0x0000000e
-#define CRYPTO_ALG_TYPE_AHASH_MASK 0x0000000c
+#define CRYPTO_ALG_TYPE_AHASH_MASK 0x0000000e
#define CRYPTO_ALG_TYPE_BLKCIPHER_MASK 0x0000000c
#define CRYPTO_ALG_LARVAL 0x00000010
--
1.7.4.1
^ permalink raw reply related [flat|nested] 13+ messages in thread
* [PATCH v4 02/10] crypto: add asynchronous compression api
2016-05-31 13:55 [PATCH v4 00/10] crypto: asynchronous compression api Giovanni Cabiddu
2016-05-31 13:55 ` [PATCH v4 01/10] crypto: shrink hash down to two types Giovanni Cabiddu
@ 2016-05-31 13:55 ` Giovanni Cabiddu
2016-06-02 9:12 ` Herbert Xu
2016-05-31 13:55 ` [PATCH v4 03/10] crypto: add driver-side scomp interface Giovanni Cabiddu
` (7 subsequent siblings)
9 siblings, 1 reply; 13+ messages in thread
From: Giovanni Cabiddu @ 2016-05-31 13:55 UTC (permalink / raw)
To: herbert; +Cc: linux-crypto, Giovanni Cabiddu
This patch introduces acomp, an asynchronous compression api that uses
scatterlist buffers.
Signed-off-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
---
crypto/Kconfig | 10 ++
crypto/Makefile | 2 +
crypto/acompress.c | 118 ++++++++++++++++
crypto/crypto_user.c | 21 +++
include/crypto/acompress.h | 260 +++++++++++++++++++++++++++++++++++
include/crypto/internal/acompress.h | 66 +++++++++
include/linux/crypto.h | 1 +
7 files changed, 478 insertions(+), 0 deletions(-)
create mode 100644 crypto/acompress.c
create mode 100644 include/crypto/acompress.h
create mode 100644 include/crypto/internal/acompress.h
diff --git a/crypto/Kconfig b/crypto/Kconfig
index 1d33beb..24fef55 100644
--- a/crypto/Kconfig
+++ b/crypto/Kconfig
@@ -93,6 +93,15 @@ config CRYPTO_AKCIPHER
select CRYPTO_AKCIPHER2
select CRYPTO_ALGAPI
+config CRYPTO_ACOMP
+ tristate
+ select CRYPTO_ACOMP2
+ select CRYPTO_ALGAPI
+
+config CRYPTO_ACOMP2
+ tristate
+ select CRYPTO_ALGAPI2
+
config CRYPTO_RSA
tristate "RSA algorithm"
select CRYPTO_AKCIPHER
@@ -115,6 +124,7 @@ config CRYPTO_MANAGER2
select CRYPTO_HASH2
select CRYPTO_BLKCIPHER2
select CRYPTO_AKCIPHER2
+ select CRYPTO_ACOMP2
config CRYPTO_USER
tristate "Userspace cryptographic algorithm configuration"
diff --git a/crypto/Makefile b/crypto/Makefile
index 4f4ef7e..e817b38 100644
--- a/crypto/Makefile
+++ b/crypto/Makefile
@@ -31,6 +31,8 @@ obj-$(CONFIG_CRYPTO_HASH2) += crypto_hash.o
obj-$(CONFIG_CRYPTO_AKCIPHER2) += akcipher.o
+obj-$(CONFIG_CRYPTO_ACOMP2) += acompress.o
+
$(obj)/rsapubkey-asn1.o: $(obj)/rsapubkey-asn1.c $(obj)/rsapubkey-asn1.h
$(obj)/rsaprivkey-asn1.o: $(obj)/rsaprivkey-asn1.c $(obj)/rsaprivkey-asn1.h
clean-files += rsapubkey-asn1.c rsapubkey-asn1.h
diff --git a/crypto/acompress.c b/crypto/acompress.c
new file mode 100644
index 0000000..f24fef3
--- /dev/null
+++ b/crypto/acompress.c
@@ -0,0 +1,118 @@
+/*
+ * Asynchronous Compression operations
+ *
+ * Copyright (c) 2016, Intel Corporation
+ * Authors: Weigang Li <weigang.li@intel.com>
+ * Giovanni Cabiddu <giovanni.cabiddu@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/errno.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/seq_file.h>
+#include <linux/slab.h>
+#include <linux/string.h>
+#include <linux/crypto.h>
+#include <crypto/algapi.h>
+#include <linux/cryptouser.h>
+#include <net/netlink.h>
+#include <crypto/internal/acompress.h>
+#include "internal.h"
+
+#ifdef CONFIG_NET
+static int crypto_acomp_report(struct sk_buff *skb, struct crypto_alg *alg)
+{
+ struct crypto_report_comp racomp;
+
+ strncpy(racomp.type, "acomp", sizeof(racomp.type));
+
+ if (nla_put(skb, CRYPTOCFGA_REPORT_COMPRESS,
+ sizeof(struct crypto_report_comp), &racomp))
+ goto nla_put_failure;
+ return 0;
+
+nla_put_failure:
+ return -EMSGSIZE;
+}
+#else
+static int crypto_acomp_report(struct sk_buff *skb, struct crypto_alg *alg)
+{
+ return -ENOSYS;
+}
+#endif
+
+static void crypto_acomp_show(struct seq_file *m, struct crypto_alg *alg)
+ __attribute__ ((unused));
+
+static void crypto_acomp_show(struct seq_file *m, struct crypto_alg *alg)
+{
+ seq_puts(m, "type : acomp\n");
+}
+
+static void crypto_acomp_exit_tfm(struct crypto_tfm *tfm)
+{
+ struct crypto_acomp *acomp = __crypto_acomp_tfm(tfm);
+ struct acomp_alg *alg = crypto_acomp_alg(acomp);
+
+ alg->exit(acomp);
+}
+
+static int crypto_acomp_init_tfm(struct crypto_tfm *tfm)
+{
+ struct crypto_acomp *acomp = __crypto_acomp_tfm(tfm);
+ struct acomp_alg *alg = crypto_acomp_alg(acomp);
+
+ if (alg->exit)
+ acomp->base.exit = crypto_acomp_exit_tfm;
+
+ if (alg->init)
+ return alg->init(acomp);
+
+ return 0;
+}
+
+static const struct crypto_type crypto_acomp_type = {
+ .extsize = crypto_alg_extsize,
+ .init_tfm = crypto_acomp_init_tfm,
+#ifdef CONFIG_PROC_FS
+ .show = crypto_acomp_show,
+#endif
+ .report = crypto_acomp_report,
+ .maskclear = ~CRYPTO_ALG_TYPE_MASK,
+ .maskset = CRYPTO_ALG_TYPE_MASK,
+ .type = CRYPTO_ALG_TYPE_ACOMPRESS,
+ .tfmsize = offsetof(struct crypto_acomp, base),
+};
+
+struct crypto_acomp *crypto_alloc_acomp(const char *alg_name, u32 type,
+ u32 mask)
+{
+ return crypto_alloc_tfm(alg_name, &crypto_acomp_type, type, mask);
+}
+EXPORT_SYMBOL_GPL(crypto_alloc_acomp);
+
+int crypto_register_acomp(struct acomp_alg *alg)
+{
+ struct crypto_alg *base = &alg->base;
+
+ base->cra_type = &crypto_acomp_type;
+ base->cra_flags &= ~CRYPTO_ALG_TYPE_MASK;
+ base->cra_flags |= CRYPTO_ALG_TYPE_ACOMPRESS;
+
+ return crypto_register_alg(base);
+}
+EXPORT_SYMBOL_GPL(crypto_register_acomp);
+
+int crypto_unregister_acomp(struct acomp_alg *alg)
+{
+ return crypto_unregister_alg(&alg->base);
+}
+EXPORT_SYMBOL_GPL(crypto_unregister_acomp);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("Asynchronous compression type");
diff --git a/crypto/crypto_user.c b/crypto/crypto_user.c
index f71960d..80401d9 100644
--- a/crypto/crypto_user.c
+++ b/crypto/crypto_user.c
@@ -111,6 +111,21 @@ nla_put_failure:
return -EMSGSIZE;
}
+static int crypto_report_acomp(struct sk_buff *skb, struct crypto_alg *alg)
+{
+ struct crypto_report_acomp racomp;
+
+ strncpy(racomp.type, "acomp", sizeof(racomp.type));
+
+ if (nla_put(skb, CRYPTOCFGA_REPORT_ACOMPRESS,
+ sizeof(struct crypto_report_acomp), &racomp))
+ goto nla_put_failure;
+ return 0;
+
+nla_put_failure:
+ return -EMSGSIZE;
+}
+
static int crypto_report_akcipher(struct sk_buff *skb, struct crypto_alg *alg)
{
struct crypto_report_akcipher rakcipher;
@@ -171,6 +186,12 @@ static int crypto_report_one(struct crypto_alg *alg,
break;
+ case CRYPTO_ALG_TYPE_ACOMPRESS:
+ if (crypto_report_acomp(skb, alg))
+ goto nla_put_failure;
+
+ break;
+
case CRYPTO_ALG_TYPE_AKCIPHER:
if (crypto_report_akcipher(skb, alg))
goto nla_put_failure;
diff --git a/include/crypto/acompress.h b/include/crypto/acompress.h
new file mode 100644
index 0000000..8162b48
--- /dev/null
+++ b/include/crypto/acompress.h
@@ -0,0 +1,260 @@
+/*
+ * Asynchronous Compression operations
+ *
+ * Copyright (c) 2016, Intel Corporation
+ * Authors: Weigang Li <weigang.li@intel.com>
+ * Giovanni Cabiddu <giovanni.cabiddu@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.
+ *
+ */
+#ifndef _CRYPTO_ACOMP_H
+#define _CRYPTO_ACOMP_H
+#include <linux/crypto.h>
+
+/**
+ * struct acomp_req - asynchronous (de)compression request
+ *
+ * @base: Common attributes for asynchronous crypto requests
+ * @src: Source Data
+ * @dst: Destination data
+ * @slen: Size of the input buffer
+ * @dlen: Size of the output buffer
+ * @consumed: Number of bytes consumed by the (de)compressor
+ * @produced: Number of bytes produced by the (de)compressor
+ * @__ctx: Start of private context data
+ */
+struct acomp_req {
+ struct crypto_async_request base;
+ struct scatterlist *src;
+ struct scatterlist *dst;
+ unsigned int slen;
+ unsigned int dlen;
+ unsigned int consumed;
+ unsigned int produced;
+ void *__ctx[] CRYPTO_MINALIGN_ATTR;
+};
+
+/**
+ * struct crypto_acomp - user-instantiated objects which encapsulate
+ * algorithms and core processing logic
+ *
+ * @base: Common crypto API algorithm data structure
+ */
+struct crypto_acomp {
+ struct crypto_tfm base;
+};
+
+/**
+ * struct acomp_alg - asynchronous compression algorithm
+ *
+ * @compress: Function performs a compress operation
+ * @decompress: Function performs a de-compress operation
+ * @init: Initialize the cryptographic transformation object.
+ * This function is used to initialize the cryptographic
+ * transformation object. This function is called only once at
+ * the instantiation time, right after the transformation context
+ * was allocated. In case the cryptographic hardware has some
+ * special requirements which need to be handled by software, this
+ * function shall check for the precise requirement of the
+ * transformation and put any software fallbacks in place.
+ * @exit: Deinitialize the cryptographic transformation object. This is a
+ * counterpart to @init, used to remove various changes set in
+ * @init.
+ *
+ * @reqsize: Context size for (de)compression requests
+ * @base: Common crypto API algorithm data structure
+ */
+struct acomp_alg {
+ int (*compress)(struct acomp_req *req);
+ int (*decompress)(struct acomp_req *req);
+ int (*init)(struct crypto_acomp *tfm);
+ void (*exit)(struct crypto_acomp *tfm);
+ unsigned int reqsize;
+ struct crypto_alg base;
+};
+
+/**
+ * DOC: Asynchronous Compression API
+ *
+ * The Asynchronous Compression API is used with the algorithms of type
+ * CRYPTO_ALG_TYPE_ACOMPRESS (listed as type "acomp" in /proc/crypto)
+ */
+
+/**
+ * crypto_alloc_acomp() -- allocate ACOMPRESS tfm handle
+ * @alg_name: is the cra_name / name or cra_driver_name / driver name of the
+ * compression algorithm e.g. "deflate"
+ * @type: specifies the type of the algorithm
+ * @mask: specifies the mask for the algorithm
+ *
+ * Allocate a handle for a compression algorithm. The returned struct
+ * crypto_acomp is the handle that is required for any subsequent
+ * API invocation for the compression operations.
+ *
+ * Return: allocated handle in case of success; IS_ERR() is true in case
+ * of an error, PTR_ERR() returns the error code.
+ */
+struct crypto_acomp *crypto_alloc_acomp(const char *alg_name, u32 type,
+ u32 mask);
+
+static inline struct crypto_tfm *crypto_acomp_tfm(struct crypto_acomp *tfm)
+{
+ return &tfm->base;
+}
+
+static inline struct acomp_alg *__crypto_acomp_alg(struct crypto_alg *alg)
+{
+ return container_of(alg, struct acomp_alg, base);
+}
+
+static inline struct crypto_acomp *__crypto_acomp_tfm(struct crypto_tfm *tfm)
+{
+ return container_of(tfm, struct crypto_acomp, base);
+}
+
+static inline struct acomp_alg *crypto_acomp_alg(struct crypto_acomp *tfm)
+{
+ return __crypto_acomp_alg(crypto_acomp_tfm(tfm)->__crt_alg);
+}
+
+static inline unsigned int crypto_acomp_reqsize(struct crypto_acomp *tfm)
+{
+ return crypto_acomp_alg(tfm)->reqsize;
+}
+
+static inline void acomp_request_set_tfm(struct acomp_req *req,
+ struct crypto_acomp *tfm)
+{
+ req->base.tfm = crypto_acomp_tfm(tfm);
+}
+
+static inline struct crypto_acomp *crypto_acomp_reqtfm(struct acomp_req *req)
+{
+ return __crypto_acomp_tfm(req->base.tfm);
+}
+
+/**
+ * crypto_free_acomp() -- free ACOMPRESS tfm handle
+ *
+ * @tfm: ACOMPRESS tfm handle allocated with crypto_alloc_acomp()
+ */
+static inline void crypto_free_acomp(struct crypto_acomp *tfm)
+{
+ crypto_destroy_tfm(tfm, crypto_acomp_tfm(tfm));
+}
+
+/**
+ * acomp_request_alloc() -- allocates asynchronous (de)compression request
+ *
+ * @tfm: ACOMPRESS tfm handle allocated with crypto_alloc_acomp()
+ * @gfp: allocation flags
+ *
+ * Return: allocated handle in case of success or NULL in case of an error.
+ */
+static inline struct acomp_req *acomp_request_alloc(struct crypto_acomp *tfm,
+ gfp_t gfp)
+{
+ struct acomp_req *req;
+
+ req = kzalloc(sizeof(*req) + crypto_acomp_reqsize(tfm), gfp);
+ if (likely(req))
+ acomp_request_set_tfm(req, tfm);
+
+ return req;
+}
+
+/**
+ * acomp_request_free() -- zeroize and free asynchronous (de)compression request
+ *
+ * @req: request to free
+ */
+static inline void acomp_request_free(struct acomp_req *req)
+{
+ kzfree(req);
+}
+
+/**
+ * acomp_request_set_callback() -- Sets an asynchronous callback
+ *
+ * Callback will be called when an asynchronous operation on a given
+ * request is finished.
+ *
+ * @req: request that the callback will be set for
+ * @flgs: specify for instance if the operation may backlog
+ * @cmlp: callback which will be called
+ * @data: private data used by the caller
+ */
+static inline void acomp_request_set_callback(struct acomp_req *req,
+ u32 flgs,
+ crypto_completion_t cmpl,
+ void *data)
+{
+ req->base.complete = cmpl;
+ req->base.data = data;
+ req->base.flags = flgs;
+}
+
+/**
+ * acomp_request_set_params() -- Sets request parameters
+ *
+ * Sets parameters required by an acomp operation
+ *
+ * @req: asynchronous compress request
+ * @src: pointer to input buffer scatterlist
+ * @dst: pointer to output buffer scatterlist
+ * @slen: size of the input buffer
+ * @dlen: size of the output buffer
+ */
+static inline void acomp_request_set_params(struct acomp_req *req,
+ struct scatterlist *src,
+ struct scatterlist *dst,
+ unsigned int slen,
+ unsigned int dlen)
+{
+ req->src = src;
+ req->dst = dst;
+ req->slen = slen;
+ req->dlen = dlen;
+ req->consumed = 0;
+ req->produced = 0;
+}
+
+/**
+ * crypto_acomp_compress() -- Invoke asynchronous compress operation
+ *
+ * Function invokes the asynchronous compress operation
+ *
+ * @req: asynchronous compress request
+ *
+ * Return: zero on success; error code in case of error
+ */
+static inline int crypto_acomp_compress(struct acomp_req *req)
+{
+ struct crypto_acomp *tfm = crypto_acomp_reqtfm(req);
+ struct acomp_alg *alg = crypto_acomp_alg(tfm);
+
+ return alg->compress(req);
+}
+
+/**
+ * crypto_acomp_decompress() -- Invoke asynchronous decompress operation
+ *
+ * Function invokes the asynchronous decompress operation
+ *
+ * @req: asynchronous compress request
+ *
+ * Return: zero on success; error code in case of error
+ */
+static inline int crypto_acomp_decompress(struct acomp_req *req)
+{
+ struct crypto_acomp *tfm = crypto_acomp_reqtfm(req);
+ struct acomp_alg *alg = crypto_acomp_alg(tfm);
+
+ return alg->decompress(req);
+}
+
+#endif
diff --git a/include/crypto/internal/acompress.h b/include/crypto/internal/acompress.h
new file mode 100644
index 0000000..294f2ee
--- /dev/null
+++ b/include/crypto/internal/acompress.h
@@ -0,0 +1,66 @@
+/*
+ * Asynchronous Compression operations
+ *
+ * Copyright (c) 2016, Intel Corporation
+ * Authors: Weigang Li <weigang.li@intel.com>
+ * Giovanni Cabiddu <giovanni.cabiddu@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.
+ *
+ */
+#ifndef _CRYPTO_ACOMP_INT_H
+#define _CRYPTO_ACOMP_INT_H
+#include <crypto/acompress.h>
+
+/*
+ * Transform internal helpers.
+ */
+static inline void *acomp_request_ctx(struct acomp_req *req)
+{
+ return req->__ctx;
+}
+
+static inline void *acomp_tfm_ctx(struct crypto_acomp *tfm)
+{
+ return tfm->base.__crt_ctx;
+}
+
+static inline void acomp_request_complete(struct acomp_req *req,
+ int err)
+{
+ req->base.complete(&req->base, err);
+}
+
+static inline const char *acomp_alg_name(struct crypto_acomp *tfm)
+{
+ return crypto_acomp_tfm(tfm)->__crt_alg->cra_name;
+}
+
+/**
+ * crypto_register_acomp() -- Register asynchronous compression algorithm
+ *
+ * Function registers an implementation of an asynchronous
+ * compression algorithm
+ *
+ * @alg: algorithm definition
+ *
+ * Return: zero on success; error code in case of error
+ */
+int crypto_register_acomp(struct acomp_alg *alg);
+
+/**
+ * crypto_unregister_acomp() -- Unregister asynchronous compression algorithm
+ *
+ * Function unregisters an implementation of an asynchronous
+ * compression algorithm
+ *
+ * @alg: algorithm definition
+ *
+ * Return: zero on success; error code in case of error
+ */
+int crypto_unregister_acomp(struct acomp_alg *alg);
+
+#endif
diff --git a/include/linux/crypto.h b/include/linux/crypto.h
index d844cbc..7987323 100644
--- a/include/linux/crypto.h
+++ b/include/linux/crypto.h
@@ -48,6 +48,7 @@
#define CRYPTO_ALG_TYPE_BLKCIPHER 0x00000004
#define CRYPTO_ALG_TYPE_ABLKCIPHER 0x00000005
#define CRYPTO_ALG_TYPE_GIVCIPHER 0x00000006
+#define CRYPTO_ALG_TYPE_ACOMPRESS 0x00000008
#define CRYPTO_ALG_TYPE_RNG 0x0000000c
#define CRYPTO_ALG_TYPE_AKCIPHER 0x0000000d
#define CRYPTO_ALG_TYPE_DIGEST 0x0000000e
--
1.7.4.1
^ permalink raw reply related [flat|nested] 13+ messages in thread
* [PATCH v4 03/10] crypto: add driver-side scomp interface
2016-05-31 13:55 [PATCH v4 00/10] crypto: asynchronous compression api Giovanni Cabiddu
2016-05-31 13:55 ` [PATCH v4 01/10] crypto: shrink hash down to two types Giovanni Cabiddu
2016-05-31 13:55 ` [PATCH v4 02/10] crypto: add asynchronous compression api Giovanni Cabiddu
@ 2016-05-31 13:55 ` Giovanni Cabiddu
2016-05-31 13:55 ` [PATCH v4 04/10] crypto: add quick decompression api Giovanni Cabiddu
` (6 subsequent siblings)
9 siblings, 0 replies; 13+ messages in thread
From: Giovanni Cabiddu @ 2016-05-31 13:55 UTC (permalink / raw)
To: herbert; +Cc: linux-crypto, Giovanni Cabiddu
Add a synchronous back-end (scomp) to acomp. This allows to easily expose
the already present compression algorithms in LKCF via acomp
Signed-off-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
---
crypto/Makefile | 1 +
crypto/acompress.c | 49 +++++++-
crypto/scompress.c | 257 +++++++++++++++++++++++++++++++++++
include/crypto/acompress.h | 33 ++---
include/crypto/internal/acompress.h | 16 ++
include/crypto/internal/scompress.h | 134 ++++++++++++++++++
include/linux/crypto.h | 2 +
7 files changed, 469 insertions(+), 23 deletions(-)
create mode 100644 crypto/scompress.c
create mode 100644 include/crypto/internal/scompress.h
diff --git a/crypto/Makefile b/crypto/Makefile
index e817b38..fc8fcfe 100644
--- a/crypto/Makefile
+++ b/crypto/Makefile
@@ -32,6 +32,7 @@ obj-$(CONFIG_CRYPTO_HASH2) += crypto_hash.o
obj-$(CONFIG_CRYPTO_AKCIPHER2) += akcipher.o
obj-$(CONFIG_CRYPTO_ACOMP2) += acompress.o
+obj-$(CONFIG_CRYPTO_ACOMP2) += scompress.o
$(obj)/rsapubkey-asn1.o: $(obj)/rsapubkey-asn1.c $(obj)/rsapubkey-asn1.h
$(obj)/rsaprivkey-asn1.o: $(obj)/rsaprivkey-asn1.c $(obj)/rsaprivkey-asn1.h
diff --git a/crypto/acompress.c b/crypto/acompress.c
index f24fef3..885d15d 100644
--- a/crypto/acompress.c
+++ b/crypto/acompress.c
@@ -22,8 +22,11 @@
#include <linux/cryptouser.h>
#include <net/netlink.h>
#include <crypto/internal/acompress.h>
+#include <crypto/internal/scompress.h>
#include "internal.h"
+static const struct crypto_type crypto_acomp_type;
+
#ifdef CONFIG_NET
static int crypto_acomp_report(struct sk_buff *skb, struct crypto_alg *alg)
{
@@ -67,6 +70,13 @@ static int crypto_acomp_init_tfm(struct crypto_tfm *tfm)
struct crypto_acomp *acomp = __crypto_acomp_tfm(tfm);
struct acomp_alg *alg = crypto_acomp_alg(acomp);
+ if (tfm->__crt_alg->cra_type != &crypto_acomp_type)
+ return crypto_init_scomp_ops_async(tfm);
+
+ acomp->compress = alg->compress;
+ acomp->decompress = alg->decompress;
+ acomp->reqsize = alg->reqsize;
+
if (alg->exit)
acomp->base.exit = crypto_acomp_exit_tfm;
@@ -76,15 +86,25 @@ static int crypto_acomp_init_tfm(struct crypto_tfm *tfm)
return 0;
}
+unsigned int crypto_acomp_extsize(struct crypto_alg *alg)
+{
+ int extsize = crypto_alg_extsize(alg);
+
+ if (alg->cra_type != &crypto_acomp_type)
+ extsize += sizeof(struct crypto_scomp *);
+
+ return extsize;
+}
+
static const struct crypto_type crypto_acomp_type = {
- .extsize = crypto_alg_extsize,
+ .extsize = crypto_acomp_extsize,
.init_tfm = crypto_acomp_init_tfm,
#ifdef CONFIG_PROC_FS
.show = crypto_acomp_show,
#endif
.report = crypto_acomp_report,
.maskclear = ~CRYPTO_ALG_TYPE_MASK,
- .maskset = CRYPTO_ALG_TYPE_MASK,
+ .maskset = CRYPTO_ALG_TYPE_ACOMPRESS_MASK,
.type = CRYPTO_ALG_TYPE_ACOMPRESS,
.tfmsize = offsetof(struct crypto_acomp, base),
};
@@ -96,6 +116,31 @@ struct crypto_acomp *crypto_alloc_acomp(const char *alg_name, u32 type,
}
EXPORT_SYMBOL_GPL(crypto_alloc_acomp);
+struct acomp_req *acomp_request_alloc(struct crypto_acomp *acomp, gfp_t gfp)
+{
+ struct crypto_tfm *tfm = crypto_acomp_tfm(acomp);
+ struct acomp_req *req;
+
+ req = __acomp_request_alloc(acomp, gfp);
+ if (req && (tfm->__crt_alg->cra_type != &crypto_acomp_type))
+ return crypto_acomp_scomp_alloc_ctx(req);
+
+ return req;
+}
+EXPORT_SYMBOL_GPL(acomp_request_alloc);
+
+void acomp_request_free(struct acomp_req *req)
+{
+ struct crypto_acomp *acomp = crypto_acomp_reqtfm(req);
+ struct crypto_tfm *tfm = crypto_acomp_tfm(acomp);
+
+ if (tfm->__crt_alg->cra_type != &crypto_acomp_type)
+ crypto_acomp_scomp_free_ctx(req);
+
+ __acomp_request_free(req);
+}
+EXPORT_SYMBOL_GPL(acomp_request_free);
+
int crypto_register_acomp(struct acomp_alg *alg)
{
struct crypto_alg *base = &alg->base;
diff --git a/crypto/scompress.c b/crypto/scompress.c
new file mode 100644
index 0000000..5a25e17
--- /dev/null
+++ b/crypto/scompress.c
@@ -0,0 +1,257 @@
+/*
+ * Synchronous Compression operations
+ *
+ * Copyright 2015 LG Electronics Inc.
+ * Copyright (c) 2016, Intel Corporation
+ * Author: Giovanni Cabiddu <giovanni.cabiddu@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/errno.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/seq_file.h>
+#include <linux/slab.h>
+#include <linux/string.h>
+#include <linux/crypto.h>
+#include <crypto/algapi.h>
+#include <linux/cryptouser.h>
+#include <net/netlink.h>
+#include <crypto/scatterwalk.h>
+#include <crypto/internal/acompress.h>
+#include <crypto/internal/scompress.h>
+#include "internal.h"
+
+static const struct crypto_type crypto_scomp_type;
+
+#ifdef CONFIG_NET
+static int crypto_scomp_report(struct sk_buff *skb, struct crypto_alg *alg)
+{
+ struct crypto_report_comp rscomp;
+
+ strncpy(rscomp.type, "scomp", sizeof(rscomp.type));
+
+ if (nla_put(skb, CRYPTOCFGA_REPORT_COMPRESS,
+ sizeof(struct crypto_report_comp), &rscomp))
+ goto nla_put_failure;
+ return 0;
+
+nla_put_failure:
+ return -EMSGSIZE;
+}
+#else
+static int crypto_scomp_report(struct sk_buff *skb, struct crypto_alg *alg)
+{
+ return -ENOSYS;
+}
+#endif
+
+static void crypto_scomp_show(struct seq_file *m, struct crypto_alg *alg)
+ __attribute__ ((unused));
+
+static void crypto_scomp_show(struct seq_file *m, struct crypto_alg *alg)
+{
+ seq_puts(m, "type : scomp\n");
+}
+
+static int crypto_scomp_init_tfm(struct crypto_tfm *tfm)
+{
+ return 0;
+}
+
+static void *scomp_map(struct scatterlist *sg, unsigned int len,
+ gfp_t gfp_flags)
+{
+ void *buf;
+
+ if (sg_is_last(sg))
+ return kmap_atomic(sg_page(sg)) + sg->offset;
+
+ buf = kmalloc(len, gfp_flags);
+ if (!buf)
+ return NULL;
+
+ scatterwalk_map_and_copy(buf, sg, 0, len, 0);
+
+ return buf;
+}
+
+static void scomp_unmap(struct scatterlist *sg, void *buf, unsigned int len)
+{
+ if (!buf)
+ return;
+
+ if (sg_is_last(sg)) {
+ kunmap_atomic(buf);
+ return;
+ }
+
+ scatterwalk_map_and_copy(buf, sg, 0, len, 1);
+ kfree(buf);
+}
+
+static int scomp_acomp_comp_decomp(struct acomp_req *req, int comp_dir)
+{
+ struct crypto_acomp *tfm = crypto_acomp_reqtfm(req);
+ void **tfm_ctx = acomp_tfm_ctx(tfm);
+ struct crypto_scomp *scomp = *tfm_ctx;
+ gfp_t gfp_flags = (req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP) ?
+ GFP_KERNEL : GFP_ATOMIC;
+ void **ctx = acomp_request_ctx(req);
+ unsigned int slen = req->slen;
+ unsigned int dlen = req->dlen;
+ u8 *src;
+ u8 *dst;
+ int ret;
+
+ src = scomp_map(req->src, slen, gfp_flags);
+ if (!src) {
+ ret = -ENOMEM;
+ goto out;
+ }
+
+ dst = scomp_map(req->dst, dlen, gfp_flags);
+ if (!dst) {
+ ret = -ENOMEM;
+ goto out;
+ }
+
+ if (comp_dir)
+ ret = crypto_scomp_compress(scomp, src, slen, dst, &dlen,
+ *ctx);
+ else
+ ret = crypto_scomp_decompress(scomp, src, slen, dst, &dlen,
+ *ctx);
+
+out:
+ if (ret < 0) {
+ req->consumed = 0;
+ req->produced = 0;
+ } else {
+ req->consumed = slen;
+ req->produced = dlen;
+ }
+ scomp_unmap(req->src, src, 0);
+ scomp_unmap(req->dst, dst, (ret < 0) ? 0 : dlen);
+
+ return ret;
+}
+
+static int scomp_acomp_compress(struct acomp_req *req)
+{
+ return scomp_acomp_comp_decomp(req, 1);
+}
+
+static int scomp_acomp_decompress(struct acomp_req *req)
+{
+ return scomp_acomp_comp_decomp(req, 0);
+}
+
+static void crypto_exit_scomp_ops_async(struct crypto_tfm *tfm)
+{
+ struct crypto_scomp **ctx = crypto_tfm_ctx(tfm);
+
+ crypto_free_scomp(*ctx);
+}
+
+int crypto_init_scomp_ops_async(struct crypto_tfm *tfm)
+{
+ struct crypto_alg *calg = tfm->__crt_alg;
+ struct crypto_acomp *crt = __crypto_acomp_tfm(tfm);
+ struct crypto_scomp **ctx = crypto_tfm_ctx(tfm);
+ struct crypto_scomp *scomp;
+
+ if (!crypto_mod_get(calg))
+ return -EAGAIN;
+
+ scomp = crypto_create_tfm(calg, &crypto_scomp_type);
+ if (IS_ERR(scomp)) {
+ crypto_mod_put(calg);
+ return PTR_ERR(scomp);
+ }
+
+ *ctx = scomp;
+ tfm->exit = crypto_exit_scomp_ops_async;
+
+ crt->compress = scomp_acomp_compress;
+ crt->decompress = scomp_acomp_decompress;
+ crt->reqsize = sizeof(void *);
+
+ return 0;
+}
+
+struct acomp_req *crypto_acomp_scomp_alloc_ctx(struct acomp_req *req)
+{
+ struct crypto_acomp *acomp = crypto_acomp_reqtfm(req);
+ struct crypto_tfm *tfm = crypto_acomp_tfm(acomp);
+ struct crypto_scomp **tfm_ctx = crypto_tfm_ctx(tfm);
+ struct crypto_scomp *scomp = *tfm_ctx;
+ void *ctx;
+
+ ctx = crypto_scomp_alloc_ctx(scomp);
+ if (IS_ERR(ctx)) {
+ kfree(req);
+ return NULL;
+ }
+
+ *req->__ctx = ctx;
+
+ return req;
+}
+
+void crypto_acomp_scomp_free_ctx(struct acomp_req *req)
+{
+ struct crypto_acomp *acomp = crypto_acomp_reqtfm(req);
+ struct crypto_tfm *tfm = crypto_acomp_tfm(acomp);
+ struct crypto_scomp **tfm_ctx = crypto_tfm_ctx(tfm);
+ struct crypto_scomp *scomp = *tfm_ctx;
+ void *ctx = *req->__ctx;
+
+ if (ctx)
+ crypto_scomp_free_ctx(scomp, ctx);
+}
+
+static const struct crypto_type crypto_scomp_type = {
+ .extsize = crypto_alg_extsize,
+ .init_tfm = crypto_scomp_init_tfm,
+#ifdef CONFIG_PROC_FS
+ .show = crypto_scomp_show,
+#endif
+ .report = crypto_scomp_report,
+ .maskclear = ~CRYPTO_ALG_TYPE_MASK,
+ .maskset = CRYPTO_ALG_TYPE_MASK,
+ .type = CRYPTO_ALG_TYPE_SCOMPRESS,
+ .tfmsize = offsetof(struct crypto_scomp, base),
+};
+
+struct crypto_scomp *crypto_alloc_scomp(const char *alg_name, u32 type,
+ u32 mask)
+{
+ return crypto_alloc_tfm(alg_name, &crypto_scomp_type, type, mask);
+}
+EXPORT_SYMBOL_GPL(crypto_alloc_scomp);
+
+int crypto_register_scomp(struct scomp_alg *alg)
+{
+ struct crypto_alg *base = &alg->base;
+
+ base->cra_type = &crypto_scomp_type;
+ base->cra_flags &= ~CRYPTO_ALG_TYPE_MASK;
+ base->cra_flags |= CRYPTO_ALG_TYPE_SCOMPRESS;
+
+ return crypto_register_alg(base);
+}
+EXPORT_SYMBOL_GPL(crypto_register_scomp);
+
+int crypto_unregister_scomp(struct scomp_alg *alg)
+{
+ return crypto_unregister_alg(&alg->base);
+}
+EXPORT_SYMBOL_GPL(crypto_unregister_scomp);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("Synchronous compression type");
diff --git a/include/crypto/acompress.h b/include/crypto/acompress.h
index 8162b48..7830658 100644
--- a/include/crypto/acompress.h
+++ b/include/crypto/acompress.h
@@ -42,9 +42,15 @@ struct acomp_req {
* struct crypto_acomp - user-instantiated objects which encapsulate
* algorithms and core processing logic
*
- * @base: Common crypto API algorithm data structure
+ * @compress: Function performs a compress operation
+ * @decompress: Function performs a de-compress operation
+ * @reqsize: Context size for (de)compression requests
+ * @base: Common crypto API algorithm data structure
*/
struct crypto_acomp {
+ int (*compress)(struct acomp_req *req);
+ int (*decompress)(struct acomp_req *req);
+ unsigned int reqsize;
struct crypto_tfm base;
};
@@ -123,7 +129,7 @@ static inline struct acomp_alg *crypto_acomp_alg(struct crypto_acomp *tfm)
static inline unsigned int crypto_acomp_reqsize(struct crypto_acomp *tfm)
{
- return crypto_acomp_alg(tfm)->reqsize;
+ return tfm->reqsize;
}
static inline void acomp_request_set_tfm(struct acomp_req *req,
@@ -155,27 +161,14 @@ static inline void crypto_free_acomp(struct crypto_acomp *tfm)
*
* Return: allocated handle in case of success or NULL in case of an error.
*/
-static inline struct acomp_req *acomp_request_alloc(struct crypto_acomp *tfm,
- gfp_t gfp)
-{
- struct acomp_req *req;
-
- req = kzalloc(sizeof(*req) + crypto_acomp_reqsize(tfm), gfp);
- if (likely(req))
- acomp_request_set_tfm(req, tfm);
-
- return req;
-}
+struct acomp_req *acomp_request_alloc(struct crypto_acomp *tfm, gfp_t gfp);
/**
* acomp_request_free() -- zeroize and free asynchronous (de)compression request
*
* @req: request to free
*/
-static inline void acomp_request_free(struct acomp_req *req)
-{
- kzfree(req);
-}
+void acomp_request_free(struct acomp_req *req);
/**
* acomp_request_set_callback() -- Sets an asynchronous callback
@@ -235,9 +228,8 @@ static inline void acomp_request_set_params(struct acomp_req *req,
static inline int crypto_acomp_compress(struct acomp_req *req)
{
struct crypto_acomp *tfm = crypto_acomp_reqtfm(req);
- struct acomp_alg *alg = crypto_acomp_alg(tfm);
- return alg->compress(req);
+ return tfm->compress(req);
}
/**
@@ -252,9 +244,8 @@ static inline int crypto_acomp_compress(struct acomp_req *req)
static inline int crypto_acomp_decompress(struct acomp_req *req)
{
struct crypto_acomp *tfm = crypto_acomp_reqtfm(req);
- struct acomp_alg *alg = crypto_acomp_alg(tfm);
- return alg->decompress(req);
+ return tfm->decompress(req);
}
#endif
diff --git a/include/crypto/internal/acompress.h b/include/crypto/internal/acompress.h
index 294f2ee..e42ce28 100644
--- a/include/crypto/internal/acompress.h
+++ b/include/crypto/internal/acompress.h
@@ -39,6 +39,22 @@ static inline const char *acomp_alg_name(struct crypto_acomp *tfm)
return crypto_acomp_tfm(tfm)->__crt_alg->cra_name;
}
+static inline struct acomp_req *__acomp_request_alloc(struct crypto_acomp *tfm,
+ gfp_t gfp)
+{
+ struct acomp_req *req;
+
+ req = kzalloc(sizeof(*req) + crypto_acomp_reqsize(tfm), gfp);
+ if (likely(req))
+ acomp_request_set_tfm(req, tfm);
+ return req;
+}
+
+static inline void __acomp_request_free(struct acomp_req *req)
+{
+ kzfree(req);
+}
+
/**
* crypto_register_acomp() -- Register asynchronous compression algorithm
*
diff --git a/include/crypto/internal/scompress.h b/include/crypto/internal/scompress.h
new file mode 100644
index 0000000..a88fc8d
--- /dev/null
+++ b/include/crypto/internal/scompress.h
@@ -0,0 +1,134 @@
+/*
+ * Synchronous Compression operations
+ *
+ * Copyright 2015 LG Electronics Inc.
+ * Copyright (c) 2016, Intel Corporation
+ * Author: Giovanni Cabiddu <giovanni.cabiddu@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.
+ *
+ */
+#ifndef _CRYPTO_SCOMP_INT_H
+#define _CRYPTO_SCOMP_INT_H
+#include <linux/crypto.h>
+
+struct crypto_scomp {
+ struct crypto_tfm base;
+};
+
+/**
+ * struct scomp_alg - synchronous compression algorithm
+ *
+ * @alloc_ctx: Function allocates algorithm specific context
+ * @free_ctx: Function frees context allocated with alloc_ctx
+ * @compress: Function performs a compress operation
+ * @decompress: Function performs a de-compress operation
+ * @init: Initialize the cryptographic transformation object.
+ * This function is used to initialize the cryptographic
+ * transformation object. This function is called only once at
+ * the instantiation time, right after the transformation context
+ * was allocated. In case the cryptographic hardware has some
+ * special requirements which need to be handled by software, this
+ * function shall check for the precise requirement of the
+ * transformation and put any software fallbacks in place.
+ * @exit: Deinitialize the cryptographic transformation object. This is a
+ * counterpart to @init, used to remove various changes set in
+ * @init.
+ * @base: Common crypto API algorithm data structure
+ */
+struct scomp_alg {
+ void *(*alloc_ctx)(struct crypto_scomp *tfm);
+ void (*free_ctx)(struct crypto_scomp *tfm, void *ctx);
+ int (*compress)(struct crypto_scomp *tfm, const u8 *src,
+ unsigned int slen, u8 *dst, unsigned int *dlen,
+ void *ctx);
+ int (*decompress)(struct crypto_scomp *tfm, const u8 *src,
+ unsigned int slen, u8 *dst, unsigned int *dlen,
+ void *ctx);
+ struct crypto_alg base;
+};
+
+static inline struct scomp_alg *__crypto_scomp_alg(struct crypto_alg *alg)
+{
+ return container_of(alg, struct scomp_alg, base);
+}
+
+static inline struct crypto_scomp *__crypto_scomp_tfm(struct crypto_tfm *tfm)
+{
+ return container_of(tfm, struct crypto_scomp, base);
+}
+
+static inline struct crypto_tfm *crypto_scomp_tfm(struct crypto_scomp *tfm)
+{
+ return &tfm->base;
+}
+
+static inline void crypto_free_scomp(struct crypto_scomp *tfm)
+{
+ crypto_destroy_tfm(tfm, crypto_scomp_tfm(tfm));
+}
+
+static inline struct scomp_alg *crypto_scomp_alg(struct crypto_scomp *tfm)
+{
+ return __crypto_scomp_alg(crypto_scomp_tfm(tfm)->__crt_alg);
+}
+
+static inline void *crypto_scomp_alloc_ctx(struct crypto_scomp *tfm)
+{
+ return crypto_scomp_alg(tfm)->alloc_ctx(tfm);
+}
+
+static inline void crypto_scomp_free_ctx(struct crypto_scomp *tfm,
+ void *ctx)
+{
+ return crypto_scomp_alg(tfm)->free_ctx(tfm, ctx);
+}
+
+static inline int crypto_scomp_compress(struct crypto_scomp *tfm,
+ const u8 *src, unsigned int slen,
+ u8 *dst, unsigned int *dlen, void *ctx)
+{
+ return crypto_scomp_alg(tfm)->compress(tfm, src, slen, dst, dlen, ctx);
+}
+
+static inline int crypto_scomp_decompress(struct crypto_scomp *tfm,
+ const u8 *src, unsigned int slen,
+ u8 *dst, unsigned int *dlen,
+ void *ctx)
+{
+ return crypto_scomp_alg(tfm)->decompress(tfm, src, slen, dst, dlen,
+ ctx);
+}
+
+int crypto_init_scomp_ops_async(struct crypto_tfm *tfm);
+struct acomp_req *crypto_acomp_scomp_alloc_ctx(struct acomp_req *req);
+void crypto_acomp_scomp_free_ctx(struct acomp_req *req);
+
+/**
+ * crypto_register_scomp() -- Register synchronous compression algorithm
+ *
+ * Function registers an implementation of a synchronous
+ * compression algorithm
+ *
+ * @alg: algorithm definition
+ *
+ * Return: zero on success; error code in case of error
+ */
+int crypto_register_scomp(struct scomp_alg *alg);
+
+/**
+ * crypto_unregister_scomp() -- Unregister synchronous compression algorithm
+ *
+ * Function unregisters an implementation of a synchronous
+ * compression algorithm
+ *
+ * @alg: algorithm definition
+ *
+ * Return: zero on success; error code in case of error
+ */
+int crypto_unregister_scomp(struct scomp_alg *alg);
+
+#endif
diff --git a/include/linux/crypto.h b/include/linux/crypto.h
index 7987323..23ceb0b 100644
--- a/include/linux/crypto.h
+++ b/include/linux/crypto.h
@@ -49,6 +49,7 @@
#define CRYPTO_ALG_TYPE_ABLKCIPHER 0x00000005
#define CRYPTO_ALG_TYPE_GIVCIPHER 0x00000006
#define CRYPTO_ALG_TYPE_ACOMPRESS 0x00000008
+#define CRYPTO_ALG_TYPE_SCOMPRESS 0x0000000a
#define CRYPTO_ALG_TYPE_RNG 0x0000000c
#define CRYPTO_ALG_TYPE_AKCIPHER 0x0000000d
#define CRYPTO_ALG_TYPE_DIGEST 0x0000000e
@@ -59,6 +60,7 @@
#define CRYPTO_ALG_TYPE_HASH_MASK 0x0000000e
#define CRYPTO_ALG_TYPE_AHASH_MASK 0x0000000e
#define CRYPTO_ALG_TYPE_BLKCIPHER_MASK 0x0000000c
+#define CRYPTO_ALG_TYPE_ACOMPRESS_MASK 0x0000000c
#define CRYPTO_ALG_LARVAL 0x00000010
#define CRYPTO_ALG_DEAD 0x00000020
--
1.7.4.1
^ permalink raw reply related [flat|nested] 13+ messages in thread
* [PATCH v4 04/10] crypto: add quick decompression api
2016-05-31 13:55 [PATCH v4 00/10] crypto: asynchronous compression api Giovanni Cabiddu
` (2 preceding siblings ...)
2016-05-31 13:55 ` [PATCH v4 03/10] crypto: add driver-side scomp interface Giovanni Cabiddu
@ 2016-05-31 13:55 ` Giovanni Cabiddu
2016-06-02 9:15 ` Herbert Xu
2016-05-31 13:55 ` [PATCH v4 05/10] crypto: acomp - add support for lzo via scomp Giovanni Cabiddu
` (5 subsequent siblings)
9 siblings, 1 reply; 13+ messages in thread
From: Giovanni Cabiddu @ 2016-05-31 13:55 UTC (permalink / raw)
To: herbert; +Cc: linux-crypto, Giovanni Cabiddu
This patch introduces qdecomp, an asynchronous decompression api.
qdecomp is a front-end for acomp and scomp algorithms which do not
not need additional vmalloc work space for decompression.
Signed-off-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
---
crypto/Makefile | 1 +
crypto/acompress.c | 50 ++++++++-
crypto/qdecompress.c | 93 +++++++++++++++
crypto/scompress.c | 92 +++++++++++++++-
include/crypto/internal/acompress.h | 15 +++
include/crypto/internal/qdecompress.h | 22 ++++
include/crypto/internal/scompress.h | 14 +++
include/crypto/qdecompress.h | 204 +++++++++++++++++++++++++++++++++
include/linux/crypto.h | 4 +
9 files changed, 491 insertions(+), 4 deletions(-)
create mode 100644 crypto/qdecompress.c
create mode 100644 include/crypto/internal/qdecompress.h
create mode 100644 include/crypto/qdecompress.h
diff --git a/crypto/Makefile b/crypto/Makefile
index fc8fcfe..2621451 100644
--- a/crypto/Makefile
+++ b/crypto/Makefile
@@ -33,6 +33,7 @@ obj-$(CONFIG_CRYPTO_AKCIPHER2) += akcipher.o
obj-$(CONFIG_CRYPTO_ACOMP2) += acompress.o
obj-$(CONFIG_CRYPTO_ACOMP2) += scompress.o
+obj-$(CONFIG_CRYPTO_ACOMP2) += qdecompress.o
$(obj)/rsapubkey-asn1.o: $(obj)/rsapubkey-asn1.c $(obj)/rsapubkey-asn1.h
$(obj)/rsaprivkey-asn1.o: $(obj)/rsaprivkey-asn1.c $(obj)/rsaprivkey-asn1.h
diff --git a/crypto/acompress.c b/crypto/acompress.c
index 885d15d..dcc9ddc 100644
--- a/crypto/acompress.c
+++ b/crypto/acompress.c
@@ -23,9 +23,10 @@
#include <net/netlink.h>
#include <crypto/internal/acompress.h>
#include <crypto/internal/scompress.h>
+#include <crypto/internal/qdecompress.h>
#include "internal.h"
-static const struct crypto_type crypto_acomp_type;
+const struct crypto_type crypto_acomp_type;
#ifdef CONFIG_NET
static int crypto_acomp_report(struct sk_buff *skb, struct crypto_alg *alg)
@@ -96,7 +97,39 @@ unsigned int crypto_acomp_extsize(struct crypto_alg *alg)
return extsize;
}
-static const struct crypto_type crypto_acomp_type = {
+static void crypto_exit_acomp_ops_nospace(struct crypto_tfm *tfm)
+{
+ struct crypto_tfm **ctx = crypto_tfm_ctx(tfm);
+ struct crypto_acomp *acomp = __crypto_acomp_tfm(*ctx);
+
+ crypto_free_acomp(acomp);
+ *ctx = NULL;
+}
+
+int crypto_init_acomp_ops_nospace(struct crypto_tfm *tfm)
+{
+ struct crypto_alg *calg = tfm->__crt_alg;
+ struct crypto_qdecomp *crt = __crypto_qdecomp_tfm(tfm);
+ struct crypto_tfm **ctx = crypto_tfm_ctx(tfm);
+ struct crypto_acomp *acomp;
+
+ if (!crypto_mod_get(calg))
+ return -EAGAIN;
+
+ acomp = crypto_create_tfm(calg, &crypto_acomp_type);
+ if (IS_ERR(acomp)) {
+ crypto_mod_put(calg);
+ return PTR_ERR(acomp);
+ }
+
+ *ctx = &acomp->base;
+ tfm->exit = crypto_exit_acomp_ops_nospace;
+ crt->decompress = (int (*)(struct qdecomp_req *req))acomp->decompress;
+
+ return 0;
+}
+
+const struct crypto_type crypto_acomp_type = {
.extsize = crypto_acomp_extsize,
.init_tfm = crypto_acomp_init_tfm,
#ifdef CONFIG_PROC_FS
@@ -108,6 +141,7 @@ static const struct crypto_type crypto_acomp_type = {
.type = CRYPTO_ALG_TYPE_ACOMPRESS,
.tfmsize = offsetof(struct crypto_acomp, base),
};
+EXPORT_SYMBOL_GPL(crypto_acomp_type);
struct crypto_acomp *crypto_alloc_acomp(const char *alg_name, u32 type,
u32 mask)
@@ -153,6 +187,18 @@ int crypto_register_acomp(struct acomp_alg *alg)
}
EXPORT_SYMBOL_GPL(crypto_register_acomp);
+int crypto_register_acomp_qdecomp(struct acomp_alg *alg)
+{
+ struct crypto_alg *base = &alg->base;
+
+ base->cra_type = &crypto_acomp_type;
+ base->cra_flags &= ~CRYPTO_ALG_TYPE_MASK;
+ base->cra_flags |= CRYPTO_ALG_TYPE_ACOMPRESS_QDCMP;
+
+ return crypto_register_alg(base);
+}
+EXPORT_SYMBOL_GPL(crypto_register_acomp_qdecomp);
+
int crypto_unregister_acomp(struct acomp_alg *alg)
{
return crypto_unregister_alg(&alg->base);
diff --git a/crypto/qdecompress.c b/crypto/qdecompress.c
new file mode 100644
index 0000000..f229016
--- /dev/null
+++ b/crypto/qdecompress.c
@@ -0,0 +1,93 @@
+/*
+ * Quick Decompression operations
+ *
+ * Copyright (c) 2016, Intel Corporation
+ * Authors: Giovanni Cabiddu <giovanni.cabiddu@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/errno.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/seq_file.h>
+#include <linux/slab.h>
+#include <linux/string.h>
+#include <linux/crypto.h>
+#include <crypto/algapi.h>
+#include <linux/cryptouser.h>
+#include <net/netlink.h>
+#include <crypto/internal/qdecompress.h>
+#include <crypto/internal/acompress.h>
+#include <crypto/internal/scompress.h>
+#include "internal.h"
+
+#ifdef CONFIG_NET
+static int crypto_qdecomp_report(struct sk_buff *skb, struct crypto_alg *alg)
+{
+ struct crypto_report_comp rqdecomp;
+
+ strncpy(rqdecomp.type, "qdecomp", sizeof(rqdecomp.type));
+
+ if (nla_put(skb, CRYPTOCFGA_REPORT_COMPRESS,
+ sizeof(struct crypto_report_comp), &rqdecomp))
+ goto nla_put_failure;
+ return 0;
+
+nla_put_failure:
+ return -EMSGSIZE;
+}
+#else
+static int crypto_qdecomp_report(struct sk_buff *skb, struct crypto_alg *alg)
+{
+ return -ENOSYS;
+}
+#endif
+
+static void crypto_qdecomp_show(struct seq_file *m, struct crypto_alg *alg)
+ __attribute__ ((unused));
+
+static void crypto_qdecomp_show(struct seq_file *m, struct crypto_alg *alg)
+{
+ seq_puts(m, "type : qdecomp\n");
+}
+
+static int crypto_qdecomp_init_tfm(struct crypto_tfm *tfm)
+{
+ if (tfm->__crt_alg->cra_type == &crypto_scomp_type)
+ return crypto_init_scomp_ops_nospace(tfm);
+ else if (tfm->__crt_alg->cra_type == &crypto_acomp_type)
+ return crypto_init_acomp_ops_nospace(tfm);
+ else
+ return -EINVAL;
+}
+
+unsigned int crypto_qdecomp_extsize(struct crypto_alg *alg)
+{
+ if (alg->cra_type == &crypto_acomp_type)
+ return crypto_alg_extsize(alg);
+ return sizeof(struct crypto_scomp *);
+}
+
+static const struct crypto_type crypto_qdecomp_type = {
+ .extsize = crypto_qdecomp_extsize,
+ .init_tfm = crypto_qdecomp_init_tfm,
+#ifdef CONFIG_PROC_FS
+ .show = crypto_qdecomp_show,
+#endif
+ .report = crypto_qdecomp_report,
+ .maskclear = ~CRYPTO_ALG_TYPE_MASK,
+ .maskset = CRYPTO_ALG_TYPE_QDECOMP_MASK,
+ .type = CRYPTO_ALG_TYPE_QDECOMPRESS,
+ .tfmsize = offsetof(struct crypto_qdecomp, base),
+};
+
+struct crypto_qdecomp *crypto_alloc_qdecomp(const char *alg_name, u32 type,
+ u32 mask)
+{
+ return crypto_alloc_tfm(alg_name, &crypto_qdecomp_type, type, mask);
+}
+EXPORT_SYMBOL_GPL(crypto_alloc_qdecomp);
diff --git a/crypto/scompress.c b/crypto/scompress.c
index 5a25e17..faecab8 100644
--- a/crypto/scompress.c
+++ b/crypto/scompress.c
@@ -24,9 +24,10 @@
#include <crypto/scatterwalk.h>
#include <crypto/internal/acompress.h>
#include <crypto/internal/scompress.h>
+#include <crypto/internal/qdecompress.h>
#include "internal.h"
-static const struct crypto_type crypto_scomp_type;
+const struct crypto_type crypto_scomp_type;
#ifdef CONFIG_NET
static int crypto_scomp_report(struct sk_buff *skb, struct crypto_alg *alg)
@@ -184,6 +185,80 @@ int crypto_init_scomp_ops_async(struct crypto_tfm *tfm)
return 0;
}
+static int scomp_qdecomp_decompress(struct qdecomp_req *req)
+{
+ struct crypto_qdecomp *qdecomp = crypto_qdecomp_reqtfm(req);
+ struct crypto_tfm *tfm = crypto_qdecomp_tfm(qdecomp);
+ struct crypto_tfm **ctx = crypto_tfm_ctx(tfm);
+ struct crypto_scomp *scomp = __crypto_scomp_tfm(*ctx);
+ gfp_t gfp_flags = (req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP) ?
+ GFP_KERNEL : GFP_ATOMIC;
+ unsigned int slen = req->slen;
+ unsigned int dlen = req->dlen;
+ u8 *src;
+ u8 *dst;
+ int ret;
+
+ src = scomp_map(req->src, slen, gfp_flags);
+ if (!src) {
+ ret = -ENOMEM;
+ goto out;
+ }
+
+ dst = scomp_map(req->dst, dlen, gfp_flags);
+ if (!dst) {
+ ret = -ENOMEM;
+ goto out;
+ }
+
+ ret = crypto_scomp_decompress(scomp, src, slen, dst, &dlen, NULL);
+
+out:
+ if (ret < 0) {
+ req->consumed = 0;
+ req->produced = 0;
+ } else {
+ req->consumed = slen;
+ req->produced = dlen;
+ }
+ scomp_unmap(req->src, src, 0);
+ scomp_unmap(req->dst, dst, (ret < 0) ? 0 : dlen);
+
+ return ret;
+}
+
+static void crypto_exit_scomp_ops_nospace(struct crypto_tfm *tfm)
+{
+ struct crypto_tfm **ctx = crypto_tfm_ctx(tfm);
+ struct crypto_scomp *scomp = __crypto_scomp_tfm(*ctx);
+
+ crypto_free_scomp(scomp);
+ *ctx = NULL;
+}
+
+int crypto_init_scomp_ops_nospace(struct crypto_tfm *tfm)
+{
+ struct crypto_alg *calg = tfm->__crt_alg;
+ struct crypto_qdecomp *crt = __crypto_qdecomp_tfm(tfm);
+ struct crypto_tfm **ctx = crypto_tfm_ctx(tfm);
+ struct crypto_scomp *scomp;
+
+ if (!crypto_mod_get(calg))
+ return -EAGAIN;
+
+ scomp = crypto_create_tfm(calg, &crypto_scomp_type);
+ if (IS_ERR(scomp)) {
+ crypto_mod_put(calg);
+ return PTR_ERR(scomp);
+ }
+
+ *ctx = &scomp->base;
+ tfm->exit = crypto_exit_scomp_ops_nospace;
+ crt->decompress = scomp_qdecomp_decompress;
+
+ return 0;
+}
+
struct acomp_req *crypto_acomp_scomp_alloc_ctx(struct acomp_req *req)
{
struct crypto_acomp *acomp = crypto_acomp_reqtfm(req);
@@ -215,7 +290,7 @@ void crypto_acomp_scomp_free_ctx(struct acomp_req *req)
crypto_scomp_free_ctx(scomp, ctx);
}
-static const struct crypto_type crypto_scomp_type = {
+const struct crypto_type crypto_scomp_type = {
.extsize = crypto_alg_extsize,
.init_tfm = crypto_scomp_init_tfm,
#ifdef CONFIG_PROC_FS
@@ -227,6 +302,7 @@ static const struct crypto_type crypto_scomp_type = {
.type = CRYPTO_ALG_TYPE_SCOMPRESS,
.tfmsize = offsetof(struct crypto_scomp, base),
};
+EXPORT_SYMBOL_GPL(crypto_scomp_type);
struct crypto_scomp *crypto_alloc_scomp(const char *alg_name, u32 type,
u32 mask)
@@ -247,6 +323,18 @@ int crypto_register_scomp(struct scomp_alg *alg)
}
EXPORT_SYMBOL_GPL(crypto_register_scomp);
+int crypto_register_scomp_qdecomp(struct scomp_alg *alg)
+{
+ struct crypto_alg *base = &alg->base;
+
+ base->cra_type = &crypto_scomp_type;
+ base->cra_flags &= ~CRYPTO_ALG_TYPE_MASK;
+ base->cra_flags |= CRYPTO_ALG_TYPE_SCOMPRESS_QDCMP;
+
+ return crypto_register_alg(base);
+}
+EXPORT_SYMBOL_GPL(crypto_register_scomp_qdecomp);
+
int crypto_unregister_scomp(struct scomp_alg *alg)
{
return crypto_unregister_alg(&alg->base);
diff --git a/include/crypto/internal/acompress.h b/include/crypto/internal/acompress.h
index e42ce28..238856e 100644
--- a/include/crypto/internal/acompress.h
+++ b/include/crypto/internal/acompress.h
@@ -55,6 +55,8 @@ static inline void __acomp_request_free(struct acomp_req *req)
kzfree(req);
}
+int crypto_init_acomp_ops_nospace(struct crypto_tfm *tfm);
+
/**
* crypto_register_acomp() -- Register asynchronous compression algorithm
*
@@ -68,6 +70,19 @@ static inline void __acomp_request_free(struct acomp_req *req)
int crypto_register_acomp(struct acomp_alg *alg);
/**
+ * crypto_register_acomp_qdecomp() -- Register asynchronous compression
+ * algorithm with support for qdecomp
+ *
+ * Function registers an implementation of an asynchronous
+ * compression algorithm that supports qdecomp
+ *
+ * @alg: algorithm definition
+ *
+ * Return: zero on success; error code in case of error
+ */
+int crypto_register_acomp_qdecomp(struct acomp_alg *alg);
+
+/**
* crypto_unregister_acomp() -- Unregister asynchronous compression algorithm
*
* Function unregisters an implementation of an asynchronous
diff --git a/include/crypto/internal/qdecompress.h b/include/crypto/internal/qdecompress.h
new file mode 100644
index 0000000..ed3c2d8
--- /dev/null
+++ b/include/crypto/internal/qdecompress.h
@@ -0,0 +1,22 @@
+/*
+ * Quick Decompression operations
+ *
+ * Copyright (c) 2016, Intel Corporation
+ * Authors: Giovanni Cabiddu <giovanni.cabiddu@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.
+ *
+ */
+#ifndef _CRYPTO_QDECOMP_INT_H
+#define _CRYPTO_QDECOMP_INT_H
+
+#include <crypto/algapi.h>
+#include <crypto/qdecompress.h>
+
+extern const struct crypto_type crypto_acomp_type;
+extern const struct crypto_type crypto_scomp_type;
+
+#endif
diff --git a/include/crypto/internal/scompress.h b/include/crypto/internal/scompress.h
index a88fc8d..07f3162 100644
--- a/include/crypto/internal/scompress.h
+++ b/include/crypto/internal/scompress.h
@@ -104,6 +104,7 @@ static inline int crypto_scomp_decompress(struct crypto_scomp *tfm,
}
int crypto_init_scomp_ops_async(struct crypto_tfm *tfm);
+int crypto_init_scomp_ops_nospace(struct crypto_tfm *tfm);
struct acomp_req *crypto_acomp_scomp_alloc_ctx(struct acomp_req *req);
void crypto_acomp_scomp_free_ctx(struct acomp_req *req);
@@ -120,6 +121,19 @@ void crypto_acomp_scomp_free_ctx(struct acomp_req *req);
int crypto_register_scomp(struct scomp_alg *alg);
/**
+ * crypto_register_scomp_qdecomp() -- Register synchronous compression
+ * algorithm with support for qdecomp
+ *
+ * Function registers an implementation of a synchronous
+ * compression algorithm that supports qdecomp
+ *
+ * @alg: algorithm definition
+ *
+ * Return: zero on success; error code in case of error
+ */
+int crypto_register_scomp_qdecomp(struct scomp_alg *alg);
+
+/**
* crypto_unregister_scomp() -- Unregister synchronous compression algorithm
*
* Function unregisters an implementation of a synchronous
diff --git a/include/crypto/qdecompress.h b/include/crypto/qdecompress.h
new file mode 100644
index 0000000..6dad3b2
--- /dev/null
+++ b/include/crypto/qdecompress.h
@@ -0,0 +1,204 @@
+/*
+ * Quick Decompression operations
+ *
+ * Copyright (c) 2016, Intel Corporation
+ * Authors: Giovanni Cabiddu <giovanni.cabiddu@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.
+ *
+ */
+#ifndef _CRYPTO_QDECOMP_H
+#define _CRYPTO_QDECOMP_H
+#include <linux/crypto.h>
+
+/**
+ * struct qdecomp_req - decompression request without work space
+ *
+ * @base: Common attributes for asynchronous crypto requests
+ * @src: Source Data
+ * @dst: Destination data
+ * @slen: Size of the input buffer
+ * @dlen: Size of the output buffer
+ * @consumed: Number of bytes consumed by the decompressor
+ * @produced: Number of bytes produced by the decompressor
+ */
+struct qdecomp_req {
+ struct crypto_async_request base;
+ struct scatterlist *src;
+ struct scatterlist *dst;
+ unsigned int slen;
+ unsigned int dlen;
+ unsigned int consumed;
+ unsigned int produced;
+};
+
+/**
+ * struct crypto_qdecomp - user-instantiated objects which encapsulate
+ * algorithms and core processing logic
+ *
+ * @decompress: Function performs a decompression operation
+ * @reqsize: Context size for decompression requests
+ * @base: Common crypto API algorithm data structure
+ */
+struct crypto_qdecomp {
+ int (*decompress)(struct qdecomp_req *req);
+ struct crypto_tfm base;
+};
+
+/**
+ * DOC: Quick Decompression API
+ *
+ * The Quick Decompression API is used with the algorithms of type
+ * CRYPTO_ALG_TYPE_ACOMPRESS (listed as type "acomp" in /proc/crypto) and
+ * CRYPTO_ALG_TYPE_SCOMPRESS (listed as type "scomp" in /proc/crypto) which
+ * support decompression without work space
+ */
+
+/**
+ * crypto_alloc_qdecomp() -- allocate QDECOMPRESS tfm handle
+ * @alg_name: is the cra_name / name or cra_driver_name / driver name of the
+ * decompression algorithm e.g. "deflate"
+ * @type: specifies the type of the algorithm
+ * @mask: specifies the mask for the algorithm
+ *
+ * Allocate a handle for a decompression algorithm. The returned struct
+ * crypto_qdecomp is the handle that is required for any subsequent
+ * API invocation for the decompression operation.
+ *
+ * Return: allocated handle in case of success; IS_ERR() is true in case
+ * of an error, PTR_ERR() returns the error code.
+ */
+struct crypto_qdecomp *crypto_alloc_qdecomp(const char *alg_name, u32 type,
+ u32 mask);
+
+static inline struct crypto_tfm *crypto_qdecomp_tfm(struct crypto_qdecomp *tfm)
+{
+ return &tfm->base;
+}
+
+static inline struct crypto_qdecomp *__crypto_qdecomp_tfm(
+ struct crypto_tfm *tfm)
+{
+ return container_of(tfm, struct crypto_qdecomp, base);
+}
+
+static inline void qdecomp_request_set_tfm(struct qdecomp_req *req,
+ struct crypto_qdecomp *tfm)
+{
+ req->base.tfm = crypto_qdecomp_tfm(tfm);
+}
+
+static inline struct crypto_qdecomp *crypto_qdecomp_reqtfm(
+ struct qdecomp_req *req)
+{
+ return __crypto_qdecomp_tfm(req->base.tfm);
+}
+
+/**
+ * crypto_free_qdecomp() -- free QDECOMPRESS tfm handle
+ *
+ * @tfm: QDECOMPRESS tfm handle allocated with crypto_alloc_qdecomp()
+ */
+static inline void crypto_free_qdecomp(struct crypto_qdecomp *tfm)
+{
+ crypto_destroy_tfm(tfm, crypto_qdecomp_tfm(tfm));
+}
+
+/**
+ * qdecomp_request_alloc() -- allocates quick decompression request
+ *
+ * @tfm: QDECOMPRESS tfm handle allocated with crypto_alloc_qdecomp()
+ * @gfp: allocation flags
+ *
+ * Return: allocated handle in case of success or NULL in case of an error.
+ */
+static inline struct qdecomp_req *qdecomp_request_alloc(
+ struct crypto_qdecomp *tfm,
+ gfp_t gfp)
+{
+ struct qdecomp_req *req;
+
+ req = kzalloc(sizeof(*req), gfp);
+ if (likely(req))
+ qdecomp_request_set_tfm(req, tfm);
+
+ return req;
+}
+
+/**
+ * qdecomp_request_free() -- zeroize and free quick decompress request
+ *
+ * @req: request to free
+ */
+
+static inline void qdecomp_request_free(struct qdecomp_req *req)
+{
+ kzfree(req);
+}
+
+/**
+ * qdecomp_request_set_callback() -- Sets an asynchronous callback
+ *
+ * Callback will be called when an asynchronous operation on a given
+ * request is finished.
+ *
+ * @req: request that the callback will be set for
+ * @flgs: specify for instance if the operation may backlog
+ * @cmlp: callback which will be called
+ * @data: private data used by the caller
+ */
+static inline void qdecomp_request_set_callback(struct qdecomp_req *req,
+ u32 flgs,
+ crypto_completion_t cmpl,
+ void *data)
+{
+ req->base.complete = cmpl;
+ req->base.data = data;
+ req->base.flags = flgs;
+}
+
+/**
+ * qdecomp_request_set_params() -- Sets request parameters
+ *
+ * Sets parameters required by a qdecomp operation
+ *
+ * @req: asynchronous decompression request
+ * @src: pointer to input buffer scatterlist
+ * @dst: pointer to output buffer scatterlist
+ * @slen: size of the input buffer
+ * @dlen: size of the output buffer
+ */
+static inline void qdecomp_request_set_params(struct qdecomp_req *req,
+ struct scatterlist *src,
+ struct scatterlist *dst,
+ unsigned int slen,
+ unsigned int dlen)
+{
+ req->src = src;
+ req->dst = dst;
+ req->slen = slen;
+ req->dlen = dlen;
+ req->consumed = 0;
+ req->produced = 0;
+}
+
+/**
+ * crypto_qdecomp_decompress() -- Invoke asynchronous decompression operation
+ *
+ * Function invokes the asynchronous decompression operation
+ *
+ * @req: asynchronous decompression request
+ *
+ * Return: zero on success; error code in case of error
+ */
+static inline int crypto_qdecomp_decompress(struct qdecomp_req *req)
+{
+ struct crypto_qdecomp *tfm = crypto_qdecomp_reqtfm(req);
+
+ return tfm->decompress(req);
+}
+
+#endif
diff --git a/include/linux/crypto.h b/include/linux/crypto.h
index 23ceb0b..916e4f7 100644
--- a/include/linux/crypto.h
+++ b/include/linux/crypto.h
@@ -49,7 +49,10 @@
#define CRYPTO_ALG_TYPE_ABLKCIPHER 0x00000005
#define CRYPTO_ALG_TYPE_GIVCIPHER 0x00000006
#define CRYPTO_ALG_TYPE_ACOMPRESS 0x00000008
+#define CRYPTO_ALG_TYPE_ACOMPRESS_QDCMP 0x00000009
+#define CRYPTO_ALG_TYPE_QDECOMPRESS 0x00000009
#define CRYPTO_ALG_TYPE_SCOMPRESS 0x0000000a
+#define CRYPTO_ALG_TYPE_SCOMPRESS_QDCMP 0x0000000b
#define CRYPTO_ALG_TYPE_RNG 0x0000000c
#define CRYPTO_ALG_TYPE_AKCIPHER 0x0000000d
#define CRYPTO_ALG_TYPE_DIGEST 0x0000000e
@@ -61,6 +64,7 @@
#define CRYPTO_ALG_TYPE_AHASH_MASK 0x0000000e
#define CRYPTO_ALG_TYPE_BLKCIPHER_MASK 0x0000000c
#define CRYPTO_ALG_TYPE_ACOMPRESS_MASK 0x0000000c
+#define CRYPTO_ALG_TYPE_QDECOMP_MASK 0x0000000d
#define CRYPTO_ALG_LARVAL 0x00000010
#define CRYPTO_ALG_DEAD 0x00000020
--
1.7.4.1
^ permalink raw reply related [flat|nested] 13+ messages in thread
* [PATCH v4 05/10] crypto: acomp - add support for lzo via scomp
2016-05-31 13:55 [PATCH v4 00/10] crypto: asynchronous compression api Giovanni Cabiddu
` (3 preceding siblings ...)
2016-05-31 13:55 ` [PATCH v4 04/10] crypto: add quick decompression api Giovanni Cabiddu
@ 2016-05-31 13:55 ` Giovanni Cabiddu
2016-05-31 13:55 ` [PATCH v4 06/10] crypto: acomp - add support for lz4 " Giovanni Cabiddu
` (4 subsequent siblings)
9 siblings, 0 replies; 13+ messages in thread
From: Giovanni Cabiddu @ 2016-05-31 13:55 UTC (permalink / raw)
To: herbert; +Cc: linux-crypto, Giovanni Cabiddu
This patch implements an scomp backend for the lzo compression algorithm.
This way, lzo is exposed through the acomp api.
Signed-off-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
---
crypto/Kconfig | 1 +
crypto/lzo.c | 97 +++++++++++++++++++++++++++++++++++++++++++++++---------
2 files changed, 83 insertions(+), 15 deletions(-)
diff --git a/crypto/Kconfig b/crypto/Kconfig
index 24fef55..08075c1 100644
--- a/crypto/Kconfig
+++ b/crypto/Kconfig
@@ -1513,6 +1513,7 @@ config CRYPTO_DEFLATE
config CRYPTO_LZO
tristate "LZO compression algorithm"
select CRYPTO_ALGAPI
+ select CRYPTO_ACOMP2
select LZO_COMPRESS
select LZO_DECOMPRESS
help
diff --git a/crypto/lzo.c b/crypto/lzo.c
index c3f3dd9..732d59b 100644
--- a/crypto/lzo.c
+++ b/crypto/lzo.c
@@ -22,40 +22,55 @@
#include <linux/vmalloc.h>
#include <linux/mm.h>
#include <linux/lzo.h>
+#include <crypto/internal/scompress.h>
struct lzo_ctx {
void *lzo_comp_mem;
};
+static void *lzo_alloc_ctx(struct crypto_scomp *tfm)
+{
+ void *ctx;
+
+ ctx = kmalloc(LZO1X_MEM_COMPRESS, GFP_KERNEL | __GFP_NOWARN);
+ if (!ctx)
+ ctx = vmalloc(LZO1X_MEM_COMPRESS);
+ if (!ctx)
+ return ERR_PTR(-ENOMEM);
+
+ return ctx;
+}
+
static int lzo_init(struct crypto_tfm *tfm)
{
struct lzo_ctx *ctx = crypto_tfm_ctx(tfm);
- ctx->lzo_comp_mem = kmalloc(LZO1X_MEM_COMPRESS,
- GFP_KERNEL | __GFP_NOWARN);
- if (!ctx->lzo_comp_mem)
- ctx->lzo_comp_mem = vmalloc(LZO1X_MEM_COMPRESS);
- if (!ctx->lzo_comp_mem)
+ ctx->lzo_comp_mem = lzo_alloc_ctx(NULL);
+ if (IS_ERR(ctx->lzo_comp_mem))
return -ENOMEM;
return 0;
}
+static void lzo_free_ctx(struct crypto_scomp *tfm, void *ctx)
+{
+ kvfree(ctx);
+}
+
static void lzo_exit(struct crypto_tfm *tfm)
{
struct lzo_ctx *ctx = crypto_tfm_ctx(tfm);
- kvfree(ctx->lzo_comp_mem);
+ lzo_free_ctx(NULL, ctx->lzo_comp_mem);
}
-static int lzo_compress(struct crypto_tfm *tfm, const u8 *src,
- unsigned int slen, u8 *dst, unsigned int *dlen)
+static int __lzo_compress(const u8 *src, unsigned int slen,
+ u8 *dst, unsigned int *dlen, void *ctx)
{
- struct lzo_ctx *ctx = crypto_tfm_ctx(tfm);
size_t tmp_len = *dlen; /* size_t(ulong) <-> uint on 64 bit */
int err;
- err = lzo1x_1_compress(src, slen, dst, &tmp_len, ctx->lzo_comp_mem);
+ err = lzo1x_1_compress(src, slen, dst, &tmp_len, ctx);
if (err != LZO_E_OK)
return -EINVAL;
@@ -64,8 +79,23 @@ static int lzo_compress(struct crypto_tfm *tfm, const u8 *src,
return 0;
}
-static int lzo_decompress(struct crypto_tfm *tfm, const u8 *src,
- unsigned int slen, u8 *dst, unsigned int *dlen)
+static int lzo_compress(struct crypto_tfm *tfm, const u8 *src,
+ unsigned int slen, u8 *dst, unsigned int *dlen)
+{
+ struct lzo_ctx *ctx = crypto_tfm_ctx(tfm);
+
+ return __lzo_compress(src, slen, dst, dlen, ctx->lzo_comp_mem);
+}
+
+static int lzo_scompress(struct crypto_scomp *tfm, const u8 *src,
+ unsigned int slen, u8 *dst, unsigned int *dlen,
+ void *ctx)
+{
+ return __lzo_compress(src, slen, dst, dlen, ctx);
+}
+
+static int __lzo_decompress(const u8 *src, unsigned int slen,
+ u8 *dst, unsigned int *dlen)
{
int err;
size_t tmp_len = *dlen; /* size_t(ulong) <-> uint on 64 bit */
@@ -77,7 +107,19 @@ static int lzo_decompress(struct crypto_tfm *tfm, const u8 *src,
*dlen = tmp_len;
return 0;
+}
+static int lzo_decompress(struct crypto_tfm *tfm, const u8 *src,
+ unsigned int slen, u8 *dst, unsigned int *dlen)
+{
+ return __lzo_decompress(src, slen, dst, dlen);
+}
+
+static int lzo_sdecompress(struct crypto_scomp *tfm, const u8 *src,
+ unsigned int slen, u8 *dst, unsigned int *dlen,
+ void *ctx)
+{
+ return __lzo_decompress(src, slen, dst, dlen);
}
static struct crypto_alg alg = {
@@ -88,18 +130,43 @@ static struct crypto_alg alg = {
.cra_init = lzo_init,
.cra_exit = lzo_exit,
.cra_u = { .compress = {
- .coa_compress = lzo_compress,
- .coa_decompress = lzo_decompress } }
+ .coa_compress = lzo_compress,
+ .coa_decompress = lzo_decompress } }
+};
+
+static struct scomp_alg scomp = {
+ .alloc_ctx = lzo_alloc_ctx,
+ .free_ctx = lzo_free_ctx,
+ .compress = lzo_scompress,
+ .decompress = lzo_sdecompress,
+ .base = {
+ .cra_name = "lzo",
+ .cra_driver_name = "lzo-scomp",
+ .cra_module = THIS_MODULE,
+ }
};
static int __init lzo_mod_init(void)
{
- return crypto_register_alg(&alg);
+ int ret;
+
+ ret = crypto_register_alg(&alg);
+ if (ret)
+ return ret;
+
+ ret = crypto_register_scomp_qdecomp(&scomp);
+ if (ret) {
+ crypto_unregister_alg(&alg);
+ return ret;
+ }
+
+ return ret;
}
static void __exit lzo_mod_fini(void)
{
crypto_unregister_alg(&alg);
+ crypto_unregister_scomp(&scomp);
}
module_init(lzo_mod_init);
--
1.7.4.1
^ permalink raw reply related [flat|nested] 13+ messages in thread
* [PATCH v4 06/10] crypto: acomp - add support for lz4 via scomp
2016-05-31 13:55 [PATCH v4 00/10] crypto: asynchronous compression api Giovanni Cabiddu
` (4 preceding siblings ...)
2016-05-31 13:55 ` [PATCH v4 05/10] crypto: acomp - add support for lzo via scomp Giovanni Cabiddu
@ 2016-05-31 13:55 ` Giovanni Cabiddu
2016-05-31 13:55 ` [PATCH v4 07/10] crypto: acomp - add support for lz4hc " Giovanni Cabiddu
` (3 subsequent siblings)
9 siblings, 0 replies; 13+ messages in thread
From: Giovanni Cabiddu @ 2016-05-31 13:55 UTC (permalink / raw)
To: herbert; +Cc: linux-crypto, Giovanni Cabiddu
This patch implements an scomp backend for the lz4 compression algorithm.
This way, lz4 is exposed through the acomp api.
Signed-off-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
---
crypto/Kconfig | 1 +
crypto/lz4.c | 91 +++++++++++++++++++++++++++++++++++++++++++++++++------
2 files changed, 82 insertions(+), 10 deletions(-)
diff --git a/crypto/Kconfig b/crypto/Kconfig
index 08075c1..114d43b 100644
--- a/crypto/Kconfig
+++ b/crypto/Kconfig
@@ -1530,6 +1530,7 @@ config CRYPTO_842
config CRYPTO_LZ4
tristate "LZ4 compression algorithm"
select CRYPTO_ALGAPI
+ select CRYPTO_ACOMP2
select LZ4_COMPRESS
select LZ4_DECOMPRESS
help
diff --git a/crypto/lz4.c b/crypto/lz4.c
index aefbcea..205eaa5 100644
--- a/crypto/lz4.c
+++ b/crypto/lz4.c
@@ -23,36 +23,53 @@
#include <linux/crypto.h>
#include <linux/vmalloc.h>
#include <linux/lz4.h>
+#include <crypto/internal/scompress.h>
struct lz4_ctx {
void *lz4_comp_mem;
};
+static void *lz4_alloc_ctx(struct crypto_scomp *tfm)
+{
+ void *ctx;
+
+ ctx = vmalloc(LZ4_MEM_COMPRESS);
+ if (!ctx)
+ return ERR_PTR(-ENOMEM);
+
+ return ctx;
+}
+
static int lz4_init(struct crypto_tfm *tfm)
{
struct lz4_ctx *ctx = crypto_tfm_ctx(tfm);
- ctx->lz4_comp_mem = vmalloc(LZ4_MEM_COMPRESS);
- if (!ctx->lz4_comp_mem)
+ ctx->lz4_comp_mem = lz4_alloc_ctx(NULL);
+ if (IS_ERR(ctx->lz4_comp_mem))
return -ENOMEM;
return 0;
}
+static void lz4_free_ctx(struct crypto_scomp *tfm, void *ctx)
+{
+ vfree(ctx);
+}
+
static void lz4_exit(struct crypto_tfm *tfm)
{
struct lz4_ctx *ctx = crypto_tfm_ctx(tfm);
- vfree(ctx->lz4_comp_mem);
+
+ lz4_free_ctx(NULL, ctx->lz4_comp_mem);
}
-static int lz4_compress_crypto(struct crypto_tfm *tfm, const u8 *src,
- unsigned int slen, u8 *dst, unsigned int *dlen)
+static int __lz4_compress_crypto(const u8 *src, unsigned int slen,
+ u8 *dst, unsigned int *dlen, void *ctx)
{
- struct lz4_ctx *ctx = crypto_tfm_ctx(tfm);
size_t tmp_len = *dlen;
int err;
- err = lz4_compress(src, slen, dst, &tmp_len, ctx->lz4_comp_mem);
+ err = lz4_compress(src, slen, dst, &tmp_len, ctx);
if (err < 0)
return -EINVAL;
@@ -61,8 +78,23 @@ static int lz4_compress_crypto(struct crypto_tfm *tfm, const u8 *src,
return 0;
}
-static int lz4_decompress_crypto(struct crypto_tfm *tfm, const u8 *src,
- unsigned int slen, u8 *dst, unsigned int *dlen)
+static int lz4_scompress(struct crypto_scomp *tfm, const u8 *src,
+ unsigned int slen, u8 *dst, unsigned int *dlen,
+ void *ctx)
+{
+ return __lz4_compress_crypto(src, slen, dst, dlen, ctx);
+}
+
+static int lz4_compress_crypto(struct crypto_tfm *tfm, const u8 *src,
+ unsigned int slen, u8 *dst, unsigned int *dlen)
+{
+ struct lz4_ctx *ctx = crypto_tfm_ctx(tfm);
+
+ return __lz4_compress_crypto(src, slen, dst, dlen, ctx->lz4_comp_mem);
+}
+
+static int __lz4_decompress_crypto(const u8 *src, unsigned int slen,
+ u8 *dst, unsigned int *dlen, void *ctx)
{
int err;
size_t tmp_len = *dlen;
@@ -76,6 +108,20 @@ static int lz4_decompress_crypto(struct crypto_tfm *tfm, const u8 *src,
return err;
}
+static int lz4_sdecompress(struct crypto_scomp *tfm, const u8 *src,
+ unsigned int slen, u8 *dst, unsigned int *dlen,
+ void *ctx)
+{
+ return __lz4_decompress_crypto(src, slen, dst, dlen, NULL);
+}
+
+static int lz4_decompress_crypto(struct crypto_tfm *tfm, const u8 *src,
+ unsigned int slen, u8 *dst,
+ unsigned int *dlen)
+{
+ return __lz4_decompress_crypto(src, slen, dst, dlen, NULL);
+}
+
static struct crypto_alg alg_lz4 = {
.cra_name = "lz4",
.cra_flags = CRYPTO_ALG_TYPE_COMPRESS,
@@ -89,14 +135,39 @@ static struct crypto_alg alg_lz4 = {
.coa_decompress = lz4_decompress_crypto } }
};
+static struct scomp_alg scomp = {
+ .alloc_ctx = lz4_alloc_ctx,
+ .free_ctx = lz4_free_ctx,
+ .compress = lz4_scompress,
+ .decompress = lz4_sdecompress,
+ .base = {
+ .cra_name = "lz4",
+ .cra_driver_name = "lz4-scomp",
+ .cra_module = THIS_MODULE,
+ }
+};
+
static int __init lz4_mod_init(void)
{
- return crypto_register_alg(&alg_lz4);
+ int ret;
+
+ ret = crypto_register_alg(&alg_lz4);
+ if (ret)
+ return ret;
+
+ ret = crypto_register_scomp_qdecomp(&scomp);
+ if (ret) {
+ crypto_unregister_alg(&alg_lz4);
+ return ret;
+ }
+
+ return ret;
}
static void __exit lz4_mod_fini(void)
{
crypto_unregister_alg(&alg_lz4);
+ crypto_unregister_scomp(&scomp);
}
module_init(lz4_mod_init);
--
1.7.4.1
^ permalink raw reply related [flat|nested] 13+ messages in thread
* [PATCH v4 07/10] crypto: acomp - add support for lz4hc via scomp
2016-05-31 13:55 [PATCH v4 00/10] crypto: asynchronous compression api Giovanni Cabiddu
` (5 preceding siblings ...)
2016-05-31 13:55 ` [PATCH v4 06/10] crypto: acomp - add support for lz4 " Giovanni Cabiddu
@ 2016-05-31 13:55 ` Giovanni Cabiddu
2016-05-31 13:55 ` [PATCH v4 08/10] crypto: acomp - add support for 842 " Giovanni Cabiddu
` (2 subsequent siblings)
9 siblings, 0 replies; 13+ messages in thread
From: Giovanni Cabiddu @ 2016-05-31 13:55 UTC (permalink / raw)
To: herbert; +Cc: linux-crypto, Giovanni Cabiddu
This patch implements an scomp backend for the lz4hc compression algorithm.
This way, lz4hc is exposed through the acomp api.
Signed-off-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
---
crypto/Kconfig | 1 +
crypto/lz4hc.c | 92 +++++++++++++++++++++++++++++++++++++++++++++++++------
2 files changed, 83 insertions(+), 10 deletions(-)
diff --git a/crypto/Kconfig b/crypto/Kconfig
index 114d43b..59570da 100644
--- a/crypto/Kconfig
+++ b/crypto/Kconfig
@@ -1539,6 +1539,7 @@ config CRYPTO_LZ4
config CRYPTO_LZ4HC
tristate "LZ4HC compression algorithm"
select CRYPTO_ALGAPI
+ select CRYPTO_ACOMP2
select LZ4HC_COMPRESS
select LZ4_DECOMPRESS
help
diff --git a/crypto/lz4hc.c b/crypto/lz4hc.c
index a1d3b5b..068b06f 100644
--- a/crypto/lz4hc.c
+++ b/crypto/lz4hc.c
@@ -22,37 +22,53 @@
#include <linux/crypto.h>
#include <linux/vmalloc.h>
#include <linux/lz4.h>
+#include <crypto/internal/scompress.h>
struct lz4hc_ctx {
void *lz4hc_comp_mem;
};
+static void *lz4hc_alloc_ctx(struct crypto_scomp *tfm)
+{
+ void *ctx;
+
+ ctx = vmalloc(LZ4HC_MEM_COMPRESS);
+ if (!ctx)
+ return ERR_PTR(-ENOMEM);
+
+ return ctx;
+}
+
static int lz4hc_init(struct crypto_tfm *tfm)
{
struct lz4hc_ctx *ctx = crypto_tfm_ctx(tfm);
- ctx->lz4hc_comp_mem = vmalloc(LZ4HC_MEM_COMPRESS);
- if (!ctx->lz4hc_comp_mem)
+ ctx->lz4hc_comp_mem = lz4hc_alloc_ctx(NULL);
+ if (IS_ERR(ctx->lz4hc_comp_mem))
return -ENOMEM;
return 0;
}
+static void lz4hc_free_ctx(struct crypto_scomp *tfm, void *ctx)
+{
+ vfree(ctx);
+}
+
static void lz4hc_exit(struct crypto_tfm *tfm)
{
struct lz4hc_ctx *ctx = crypto_tfm_ctx(tfm);
- vfree(ctx->lz4hc_comp_mem);
+ lz4hc_free_ctx(NULL, ctx->lz4hc_comp_mem);
}
-static int lz4hc_compress_crypto(struct crypto_tfm *tfm, const u8 *src,
- unsigned int slen, u8 *dst, unsigned int *dlen)
+static int __lz4hc_compress_crypto(const u8 *src, unsigned int slen,
+ u8 *dst, unsigned int *dlen, void *ctx)
{
- struct lz4hc_ctx *ctx = crypto_tfm_ctx(tfm);
size_t tmp_len = *dlen;
int err;
- err = lz4hc_compress(src, slen, dst, &tmp_len, ctx->lz4hc_comp_mem);
+ err = lz4hc_compress(src, slen, dst, &tmp_len, ctx);
if (err < 0)
return -EINVAL;
@@ -61,8 +77,25 @@ static int lz4hc_compress_crypto(struct crypto_tfm *tfm, const u8 *src,
return 0;
}
-static int lz4hc_decompress_crypto(struct crypto_tfm *tfm, const u8 *src,
- unsigned int slen, u8 *dst, unsigned int *dlen)
+static int lz4hc_scompress(struct crypto_scomp *tfm, const u8 *src,
+ unsigned int slen, u8 *dst, unsigned int *dlen,
+ void *ctx)
+{
+ return __lz4hc_compress_crypto(src, slen, dst, dlen, ctx);
+}
+
+static int lz4hc_compress_crypto(struct crypto_tfm *tfm, const u8 *src,
+ unsigned int slen, u8 *dst,
+ unsigned int *dlen)
+{
+ struct lz4hc_ctx *ctx = crypto_tfm_ctx(tfm);
+
+ return __lz4hc_compress_crypto(src, slen, dst, dlen,
+ ctx->lz4hc_comp_mem);
+}
+
+static int __lz4hc_decompress_crypto(const u8 *src, unsigned int slen,
+ u8 *dst, unsigned int *dlen, void *ctx)
{
int err;
size_t tmp_len = *dlen;
@@ -76,6 +109,20 @@ static int lz4hc_decompress_crypto(struct crypto_tfm *tfm, const u8 *src,
return err;
}
+static int lz4hc_sdecompress(struct crypto_scomp *tfm, const u8 *src,
+ unsigned int slen, u8 *dst, unsigned int *dlen,
+ void *ctx)
+{
+ return __lz4hc_decompress_crypto(src, slen, dst, dlen, NULL);
+}
+
+static int lz4hc_decompress_crypto(struct crypto_tfm *tfm, const u8 *src,
+ unsigned int slen, u8 *dst,
+ unsigned int *dlen)
+{
+ return __lz4hc_decompress_crypto(src, slen, dst, dlen, NULL);
+}
+
static struct crypto_alg alg_lz4hc = {
.cra_name = "lz4hc",
.cra_flags = CRYPTO_ALG_TYPE_COMPRESS,
@@ -89,14 +136,39 @@ static struct crypto_alg alg_lz4hc = {
.coa_decompress = lz4hc_decompress_crypto } }
};
+static struct scomp_alg scomp = {
+ .alloc_ctx = lz4hc_alloc_ctx,
+ .free_ctx = lz4hc_free_ctx,
+ .compress = lz4hc_scompress,
+ .decompress = lz4hc_sdecompress,
+ .base = {
+ .cra_name = "lz4hc",
+ .cra_driver_name = "lz4hc-scomp",
+ .cra_module = THIS_MODULE,
+ }
+};
+
static int __init lz4hc_mod_init(void)
{
- return crypto_register_alg(&alg_lz4hc);
+ int ret;
+
+ ret = crypto_register_alg(&alg_lz4hc);
+ if (ret)
+ return ret;
+
+ ret = crypto_register_scomp_qdecomp(&scomp);
+ if (ret) {
+ crypto_unregister_alg(&alg_lz4hc);
+ return ret;
+ }
+
+ return ret;
}
static void __exit lz4hc_mod_fini(void)
{
crypto_unregister_alg(&alg_lz4hc);
+ crypto_unregister_scomp(&scomp);
}
module_init(lz4hc_mod_init);
--
1.7.4.1
^ permalink raw reply related [flat|nested] 13+ messages in thread
* [PATCH v4 08/10] crypto: acomp - add support for 842 via scomp
2016-05-31 13:55 [PATCH v4 00/10] crypto: asynchronous compression api Giovanni Cabiddu
` (6 preceding siblings ...)
2016-05-31 13:55 ` [PATCH v4 07/10] crypto: acomp - add support for lz4hc " Giovanni Cabiddu
@ 2016-05-31 13:55 ` Giovanni Cabiddu
2016-05-31 13:55 ` [PATCH v4 09/10] crypto: acomp - add support for deflate " Giovanni Cabiddu
2016-05-31 13:55 ` [PATCH v4 10/10] crypto: acomp - update testmgr with support for acomp Giovanni Cabiddu
9 siblings, 0 replies; 13+ messages in thread
From: Giovanni Cabiddu @ 2016-05-31 13:55 UTC (permalink / raw)
To: herbert; +Cc: linux-crypto, Giovanni Cabiddu
This patch implements an scomp backend for the 842 compression algorithm.
This way, 842 is exposed through the acomp api.
Signed-off-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
---
crypto/842.c | 82 +++++++++++++++++++++++++++++++++++++++++++++++++++++--
crypto/Kconfig | 1 +
2 files changed, 80 insertions(+), 3 deletions(-)
diff --git a/crypto/842.c b/crypto/842.c
index 98e387e..a433ac3 100644
--- a/crypto/842.c
+++ b/crypto/842.c
@@ -31,11 +31,46 @@
#include <linux/module.h>
#include <linux/crypto.h>
#include <linux/sw842.h>
+#include <crypto/internal/scompress.h>
struct crypto842_ctx {
- char wmem[SW842_MEM_COMPRESS]; /* working memory for compress */
+ void *wmem; /* working memory for compress */
};
+static void *crypto842_alloc_ctx(struct crypto_scomp *tfm)
+{
+ void *ctx;
+
+ ctx = kmalloc(SW842_MEM_COMPRESS, GFP_KERNEL);
+ if (!ctx)
+ return ERR_PTR(-ENOMEM);
+
+ return ctx;
+}
+
+static int crypto842_init(struct crypto_tfm *tfm)
+{
+ struct crypto842_ctx *ctx = crypto_tfm_ctx(tfm);
+
+ ctx->wmem = crypto842_alloc_ctx(NULL);
+ if (IS_ERR(ctx->wmem))
+ return -ENOMEM;
+
+ return 0;
+}
+
+static void crypto842_free_ctx(struct crypto_scomp *tfm, void *ctx)
+{
+ kfree(ctx);
+}
+
+static void crypto842_exit(struct crypto_tfm *tfm)
+{
+ struct crypto842_ctx *ctx = crypto_tfm_ctx(tfm);
+
+ crypto842_free_ctx(NULL, ctx->wmem);
+}
+
static int crypto842_compress(struct crypto_tfm *tfm,
const u8 *src, unsigned int slen,
u8 *dst, unsigned int *dlen)
@@ -45,6 +80,13 @@ static int crypto842_compress(struct crypto_tfm *tfm,
return sw842_compress(src, slen, dst, dlen, ctx->wmem);
}
+static int crypto842_scompress(struct crypto_scomp *tfm,
+ const u8 *src, unsigned int slen,
+ u8 *dst, unsigned int *dlen, void *ctx)
+{
+ return sw842_compress(src, slen, dst, dlen, ctx);
+}
+
static int crypto842_decompress(struct crypto_tfm *tfm,
const u8 *src, unsigned int slen,
u8 *dst, unsigned int *dlen)
@@ -52,27 +94,61 @@ static int crypto842_decompress(struct crypto_tfm *tfm,
return sw842_decompress(src, slen, dst, dlen);
}
+static int crypto842_sdecompress(struct crypto_scomp *tfm,
+ const u8 *src, unsigned int slen,
+ u8 *dst, unsigned int *dlen, void *ctx)
+{
+ return sw842_decompress(src, slen, dst, dlen);
+}
+
static struct crypto_alg alg = {
.cra_name = "842",
.cra_driver_name = "842-generic",
.cra_priority = 100,
.cra_flags = CRYPTO_ALG_TYPE_COMPRESS,
- .cra_ctxsize = sizeof(struct crypto842_ctx),
.cra_module = THIS_MODULE,
+ .cra_init = crypto842_init,
+ .cra_exit = crypto842_exit,
.cra_u = { .compress = {
.coa_compress = crypto842_compress,
.coa_decompress = crypto842_decompress } }
};
+static struct scomp_alg scomp = {
+ .alloc_ctx = crypto842_alloc_ctx,
+ .free_ctx = crypto842_free_ctx,
+ .compress = crypto842_scompress,
+ .decompress = crypto842_sdecompress,
+ .base = {
+ .cra_name = "842",
+ .cra_driver_name = "842-scomp",
+ .cra_priority = 100,
+ .cra_module = THIS_MODULE,
+ }
+};
+
static int __init crypto842_mod_init(void)
{
- return crypto_register_alg(&alg);
+ int ret;
+
+ ret = crypto_register_alg(&alg);
+ if (ret)
+ return ret;
+
+ ret = crypto_register_scomp_qdecomp(&scomp);
+ if (ret) {
+ crypto_unregister_alg(&alg);
+ return ret;
+ }
+
+ return ret;
}
module_init(crypto842_mod_init);
static void __exit crypto842_mod_exit(void)
{
crypto_unregister_alg(&alg);
+ crypto_unregister_scomp(&scomp);
}
module_exit(crypto842_mod_exit);
diff --git a/crypto/Kconfig b/crypto/Kconfig
index 59570da..09c88ba 100644
--- a/crypto/Kconfig
+++ b/crypto/Kconfig
@@ -1522,6 +1522,7 @@ config CRYPTO_LZO
config CRYPTO_842
tristate "842 compression algorithm"
select CRYPTO_ALGAPI
+ select CRYPTO_ACOMP2
select 842_COMPRESS
select 842_DECOMPRESS
help
--
1.7.4.1
^ permalink raw reply related [flat|nested] 13+ messages in thread
* [PATCH v4 09/10] crypto: acomp - add support for deflate via scomp
2016-05-31 13:55 [PATCH v4 00/10] crypto: asynchronous compression api Giovanni Cabiddu
` (7 preceding siblings ...)
2016-05-31 13:55 ` [PATCH v4 08/10] crypto: acomp - add support for 842 " Giovanni Cabiddu
@ 2016-05-31 13:55 ` Giovanni Cabiddu
2016-05-31 13:55 ` [PATCH v4 10/10] crypto: acomp - update testmgr with support for acomp Giovanni Cabiddu
9 siblings, 0 replies; 13+ messages in thread
From: Giovanni Cabiddu @ 2016-05-31 13:55 UTC (permalink / raw)
To: herbert; +Cc: linux-crypto, Giovanni Cabiddu
This patch implements an scomp backend for the deflate compression
algorithm. This way, deflate is exposed through the acomp api.
Signed-off-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
---
crypto/Kconfig | 1 +
crypto/deflate.c | 111 +++++++++++++++++++++++++++++++++++++++++++++++++-----
2 files changed, 102 insertions(+), 10 deletions(-)
diff --git a/crypto/Kconfig b/crypto/Kconfig
index 09c88ba..b617c5d 100644
--- a/crypto/Kconfig
+++ b/crypto/Kconfig
@@ -1502,6 +1502,7 @@ comment "Compression"
config CRYPTO_DEFLATE
tristate "Deflate compression algorithm"
select CRYPTO_ALGAPI
+ select CRYPTO_ACOMP2
select ZLIB_INFLATE
select ZLIB_DEFLATE
help
diff --git a/crypto/deflate.c b/crypto/deflate.c
index 95d8d37..f942cb3 100644
--- a/crypto/deflate.c
+++ b/crypto/deflate.c
@@ -32,6 +32,7 @@
#include <linux/interrupt.h>
#include <linux/mm.h>
#include <linux/net.h>
+#include <crypto/internal/scompress.h>
#define DEFLATE_DEF_LEVEL Z_DEFAULT_COMPRESSION
#define DEFLATE_DEF_WINBITS 11
@@ -101,9 +102,8 @@ static void deflate_decomp_exit(struct deflate_ctx *ctx)
vfree(ctx->decomp_stream.workspace);
}
-static int deflate_init(struct crypto_tfm *tfm)
+static int __deflate_init(void *ctx)
{
- struct deflate_ctx *ctx = crypto_tfm_ctx(tfm);
int ret;
ret = deflate_comp_init(ctx);
@@ -116,19 +116,55 @@ out:
return ret;
}
-static void deflate_exit(struct crypto_tfm *tfm)
+static void *deflate_alloc_ctx(struct crypto_scomp *tfm)
+{
+ struct deflate_ctx *ctx;
+ int ret;
+
+ ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
+ if (!ctx)
+ return ERR_PTR(-ENOMEM);
+
+ ret = __deflate_init(ctx);
+ if (ret) {
+ kfree(ctx);
+ return ERR_PTR(ret);
+ }
+
+ return ctx;
+}
+
+static int deflate_init(struct crypto_tfm *tfm)
{
struct deflate_ctx *ctx = crypto_tfm_ctx(tfm);
+ return __deflate_init(ctx);
+}
+
+static void __deflate_exit(void *ctx)
+{
deflate_comp_exit(ctx);
deflate_decomp_exit(ctx);
}
-static int deflate_compress(struct crypto_tfm *tfm, const u8 *src,
- unsigned int slen, u8 *dst, unsigned int *dlen)
+static void deflate_free_ctx(struct crypto_scomp *tfm, void *ctx)
+{
+ __deflate_exit(ctx);
+ kzfree(ctx);
+}
+
+static void deflate_exit(struct crypto_tfm *tfm)
+{
+ struct deflate_ctx *ctx = crypto_tfm_ctx(tfm);
+
+ __deflate_exit(ctx);
+}
+
+static int __deflate_compress(const u8 *src, unsigned int slen,
+ u8 *dst, unsigned int *dlen, void *ctx)
{
int ret = 0;
- struct deflate_ctx *dctx = crypto_tfm_ctx(tfm);
+ struct deflate_ctx *dctx = ctx;
struct z_stream_s *stream = &dctx->comp_stream;
ret = zlib_deflateReset(stream);
@@ -153,12 +189,27 @@ out:
return ret;
}
-static int deflate_decompress(struct crypto_tfm *tfm, const u8 *src,
- unsigned int slen, u8 *dst, unsigned int *dlen)
+static int deflate_compress(struct crypto_tfm *tfm, const u8 *src,
+ unsigned int slen, u8 *dst, unsigned int *dlen)
+{
+ struct deflate_ctx *dctx = crypto_tfm_ctx(tfm);
+
+ return __deflate_compress(src, slen, dst, dlen, dctx);
+}
+
+static int deflate_scompress(struct crypto_scomp *tfm, const u8 *src,
+ unsigned int slen, u8 *dst, unsigned int *dlen,
+ void *ctx)
+{
+ return __deflate_compress(src, slen, dst, dlen, ctx);
+}
+
+static int __deflate_decompress(const u8 *src, unsigned int slen,
+ u8 *dst, unsigned int *dlen, void *ctx)
{
int ret = 0;
- struct deflate_ctx *dctx = crypto_tfm_ctx(tfm);
+ struct deflate_ctx *dctx = ctx;
struct z_stream_s *stream = &dctx->decomp_stream;
ret = zlib_inflateReset(stream);
@@ -194,6 +245,21 @@ out:
return ret;
}
+static int deflate_decompress(struct crypto_tfm *tfm, const u8 *src,
+ unsigned int slen, u8 *dst, unsigned int *dlen)
+{
+ struct deflate_ctx *dctx = crypto_tfm_ctx(tfm);
+
+ return __deflate_decompress(src, slen, dst, dlen, dctx);
+}
+
+static int deflate_sdecompress(struct crypto_scomp *tfm, const u8 *src,
+ unsigned int slen, u8 *dst, unsigned int *dlen,
+ void *ctx)
+{
+ return __deflate_decompress(src, slen, dst, dlen, ctx);
+}
+
static struct crypto_alg alg = {
.cra_name = "deflate",
.cra_flags = CRYPTO_ALG_TYPE_COMPRESS,
@@ -206,14 +272,39 @@ static struct crypto_alg alg = {
.coa_decompress = deflate_decompress } }
};
+static struct scomp_alg scomp = {
+ .alloc_ctx = deflate_alloc_ctx,
+ .free_ctx = deflate_free_ctx,
+ .compress = deflate_scompress,
+ .decompress = deflate_sdecompress,
+ .base = {
+ .cra_name = "deflate",
+ .cra_driver_name = "deflate-scomp",
+ .cra_module = THIS_MODULE,
+ }
+};
+
static int __init deflate_mod_init(void)
{
- return crypto_register_alg(&alg);
+ int ret;
+
+ ret = crypto_register_alg(&alg);
+ if (ret)
+ return ret;
+
+ ret = crypto_register_scomp(&scomp);
+ if (ret) {
+ crypto_unregister_alg(&alg);
+ return ret;
+ }
+
+ return ret;
}
static void __exit deflate_mod_fini(void)
{
crypto_unregister_alg(&alg);
+ crypto_unregister_scomp(&scomp);
}
module_init(deflate_mod_init);
--
1.7.4.1
^ permalink raw reply related [flat|nested] 13+ messages in thread
* [PATCH v4 10/10] crypto: acomp - update testmgr with support for acomp
2016-05-31 13:55 [PATCH v4 00/10] crypto: asynchronous compression api Giovanni Cabiddu
` (8 preceding siblings ...)
2016-05-31 13:55 ` [PATCH v4 09/10] crypto: acomp - add support for deflate " Giovanni Cabiddu
@ 2016-05-31 13:55 ` Giovanni Cabiddu
9 siblings, 0 replies; 13+ messages in thread
From: Giovanni Cabiddu @ 2016-05-31 13:55 UTC (permalink / raw)
To: herbert; +Cc: linux-crypto, Giovanni Cabiddu
This patch adds tests to the test manager for algorithms exposed through
the acomp api
Signed-off-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
---
crypto/testmgr.c | 158 +++++++++++++++++++++++++++++++++++++++++++++++++-----
1 files changed, 145 insertions(+), 13 deletions(-)
diff --git a/crypto/testmgr.c b/crypto/testmgr.c
index c727fb0..cc531f3 100644
--- a/crypto/testmgr.c
+++ b/crypto/testmgr.c
@@ -32,6 +32,7 @@
#include <crypto/rng.h>
#include <crypto/drbg.h>
#include <crypto/akcipher.h>
+#include <crypto/acompress.h>
#include "internal.h"
@@ -1423,6 +1424,121 @@ out:
return ret;
}
+static int test_acomp(struct crypto_acomp *tfm, struct comp_testvec *ctemplate,
+ struct comp_testvec *dtemplate, int ctcount, int dtcount)
+{
+ const char *algo = crypto_tfm_alg_driver_name(crypto_acomp_tfm(tfm));
+ unsigned int i;
+ char output[COMP_BUF_SIZE];
+ int ret;
+ struct scatterlist src, dst;
+ struct acomp_req *req;
+ struct tcrypt_result result;
+
+ for (i = 0; i < ctcount; i++) {
+ unsigned int dlen = COMP_BUF_SIZE;
+ int ilen = ctemplate[i].inlen;
+
+ memset(output, 0, sizeof(output));
+ init_completion(&result.completion);
+ sg_init_one(&src, ctemplate[i].input, ilen);
+ sg_init_one(&dst, output, dlen);
+
+ req = acomp_request_alloc(tfm, GFP_KERNEL);
+ if (!req) {
+ pr_err("alg: acomp: request alloc failed for %s\n",
+ algo);
+ ret = -ENOMEM;
+ goto out;
+ }
+
+ acomp_request_set_params(req, &src, &dst, ilen, dlen);
+ acomp_request_set_callback(req, CRYPTO_TFM_REQ_MAY_BACKLOG,
+ tcrypt_complete, &result);
+
+ ret = wait_async_op(&result, crypto_acomp_compress(req));
+ if (ret) {
+ pr_err("alg: acomp: compression failed on test %d for %s: ret=%d\n",
+ i + 1, algo, -ret);
+ acomp_request_free(req);
+ goto out;
+ }
+
+ if (req->produced != ctemplate[i].outlen) {
+ pr_err("alg: acomp: Compression test %d failed for %s: output len = %d\n",
+ i + 1, algo, req->produced);
+ ret = -EINVAL;
+ acomp_request_free(req);
+ goto out;
+ }
+
+ if (memcmp(output, ctemplate[i].output, req->produced)) {
+ pr_err("alg: acomp: Compression test %d failed for %s\n",
+ i + 1, algo);
+ hexdump(output, req->produced);
+ ret = -EINVAL;
+ acomp_request_free(req);
+ goto out;
+ }
+
+ acomp_request_free(req);
+ }
+
+ for (i = 0; i < dtcount; i++) {
+ unsigned int dlen = COMP_BUF_SIZE;
+ int ilen = dtemplate[i].inlen;
+
+ memset(output, 0, sizeof(output));
+ init_completion(&result.completion);
+ sg_init_one(&src, dtemplate[i].input, ilen);
+ sg_init_one(&dst, output, dlen);
+
+ req = acomp_request_alloc(tfm, GFP_KERNEL);
+ if (!req) {
+ pr_err("alg: acomp: request alloc failed for %s\n",
+ algo);
+ ret = -ENOMEM;
+ goto out;
+ }
+
+ acomp_request_set_params(req, &src, &dst, ilen, dlen);
+ acomp_request_set_callback(req, CRYPTO_TFM_REQ_MAY_BACKLOG,
+ tcrypt_complete, &result);
+
+ ret = wait_async_op(&result, crypto_acomp_decompress(req));
+ if (ret) {
+ pr_err("alg: acomp: decompression failed on test %d for %s: ret=%d\n",
+ i + 1, algo, -ret);
+ acomp_request_free(req);
+ goto out;
+ }
+
+ if (req->produced != dtemplate[i].outlen) {
+ pr_err("alg: acomp: Decompression test %d failed for %s: output len = %d\n",
+ i + 1, algo, req->produced);
+ ret = -EINVAL;
+ acomp_request_free(req);
+ goto out;
+ }
+
+ if (memcmp(output, dtemplate[i].output, req->produced)) {
+ pr_err("alg: acomp: Decompression test %d failed for %s\n",
+ i + 1, algo);
+ hexdump(output, req->produced);
+ ret = -EINVAL;
+ acomp_request_free(req);
+ goto out;
+ }
+
+ acomp_request_free(req);
+ }
+
+ ret = 0;
+
+out:
+ return ret;
+}
+
static int test_cprng(struct crypto_rng *tfm, struct cprng_testvec *template,
unsigned int tcount)
{
@@ -1574,22 +1690,38 @@ out:
static int alg_test_comp(const struct alg_test_desc *desc, const char *driver,
u32 type, u32 mask)
{
- struct crypto_comp *tfm;
+ struct crypto_comp *comp;
+ struct crypto_acomp *acomp;
int err;
+ u32 algo_type = type & CRYPTO_ALG_TYPE_ACOMPRESS_MASK;
+
+ if (algo_type == CRYPTO_ALG_TYPE_ACOMPRESS) {
+ acomp = crypto_alloc_acomp(driver, type, mask);
+ if (IS_ERR(acomp)) {
+ pr_err("alg: acomp: Failed to load transform for %s: %ld\n",
+ driver, PTR_ERR(acomp));
+ return PTR_ERR(acomp);
+ }
+ err = test_acomp(acomp, desc->suite.comp.comp.vecs,
+ desc->suite.comp.decomp.vecs,
+ desc->suite.comp.comp.count,
+ desc->suite.comp.decomp.count);
+ crypto_free_acomp(acomp);
+ } else {
+ comp = crypto_alloc_comp(driver, type, mask);
+ if (IS_ERR(comp)) {
+ pr_err("alg: comp: Failed to load transform for %s: %ld\n",
+ driver, PTR_ERR(comp));
+ return PTR_ERR(comp);
+ }
- tfm = crypto_alloc_comp(driver, type, mask);
- if (IS_ERR(tfm)) {
- printk(KERN_ERR "alg: comp: Failed to load transform for %s: "
- "%ld\n", driver, PTR_ERR(tfm));
- return PTR_ERR(tfm);
- }
-
- err = test_comp(tfm, desc->suite.comp.comp.vecs,
- desc->suite.comp.decomp.vecs,
- desc->suite.comp.comp.count,
- desc->suite.comp.decomp.count);
+ err = test_comp(comp, desc->suite.comp.comp.vecs,
+ desc->suite.comp.decomp.vecs,
+ desc->suite.comp.comp.count,
+ desc->suite.comp.decomp.count);
- crypto_free_comp(tfm);
+ crypto_free_comp(comp);
+ }
return err;
}
--
1.7.4.1
^ permalink raw reply related [flat|nested] 13+ messages in thread
* Re: [PATCH v4 02/10] crypto: add asynchronous compression api
2016-05-31 13:55 ` [PATCH v4 02/10] crypto: add asynchronous compression api Giovanni Cabiddu
@ 2016-06-02 9:12 ` Herbert Xu
0 siblings, 0 replies; 13+ messages in thread
From: Herbert Xu @ 2016-06-02 9:12 UTC (permalink / raw)
To: Giovanni Cabiddu; +Cc: linux-crypto
On Tue, May 31, 2016 at 02:55:28PM +0100, Giovanni Cabiddu wrote:
>
> +/**
> + * struct acomp_req - asynchronous (de)compression request
> + *
> + * @base: Common attributes for asynchronous crypto requests
> + * @src: Source Data
> + * @dst: Destination data
> + * @slen: Size of the input buffer
> + * @dlen: Size of the output buffer
> + * @consumed: Number of bytes consumed by the (de)compressor
> + * @produced: Number of bytes produced by the (de)compressor
Why do we need these two? For a moment I thought you were going
to add pcomp again :)
Since we're only support compression in one go, the number of
bytes consumed must be equal to slen unless there was an error.
For the number of bytes produced I'd prefer to just use dlen for it.
Thanks,
--
Email: Herbert Xu <herbert@gondor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
^ permalink raw reply [flat|nested] 13+ messages in thread
* Re: [PATCH v4 04/10] crypto: add quick decompression api
2016-05-31 13:55 ` [PATCH v4 04/10] crypto: add quick decompression api Giovanni Cabiddu
@ 2016-06-02 9:15 ` Herbert Xu
0 siblings, 0 replies; 13+ messages in thread
From: Herbert Xu @ 2016-06-02 9:15 UTC (permalink / raw)
To: Giovanni Cabiddu; +Cc: linux-crypto
On Tue, May 31, 2016 at 02:55:30PM +0100, Giovanni Cabiddu wrote:
> This patch introduces qdecomp, an asynchronous decompression api.
> qdecomp is a front-end for acomp and scomp algorithms which do not
> not need additional vmalloc work space for decompression.
>
> Signed-off-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
I'm sorry to have to make you go through this again but we no
longer have a user for this (I believe they have switched over to
using a per-cpu buffer) so you can now get rid of any code that's
associated with qdecomp.
Thanks,
--
Email: Herbert Xu <herbert@gondor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
^ permalink raw reply [flat|nested] 13+ messages in thread
end of thread, other threads:[~2016-06-02 9:15 UTC | newest]
Thread overview: 13+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2016-05-31 13:55 [PATCH v4 00/10] crypto: asynchronous compression api Giovanni Cabiddu
2016-05-31 13:55 ` [PATCH v4 01/10] crypto: shrink hash down to two types Giovanni Cabiddu
2016-05-31 13:55 ` [PATCH v4 02/10] crypto: add asynchronous compression api Giovanni Cabiddu
2016-06-02 9:12 ` Herbert Xu
2016-05-31 13:55 ` [PATCH v4 03/10] crypto: add driver-side scomp interface Giovanni Cabiddu
2016-05-31 13:55 ` [PATCH v4 04/10] crypto: add quick decompression api Giovanni Cabiddu
2016-06-02 9:15 ` Herbert Xu
2016-05-31 13:55 ` [PATCH v4 05/10] crypto: acomp - add support for lzo via scomp Giovanni Cabiddu
2016-05-31 13:55 ` [PATCH v4 06/10] crypto: acomp - add support for lz4 " Giovanni Cabiddu
2016-05-31 13:55 ` [PATCH v4 07/10] crypto: acomp - add support for lz4hc " Giovanni Cabiddu
2016-05-31 13:55 ` [PATCH v4 08/10] crypto: acomp - add support for 842 " Giovanni Cabiddu
2016-05-31 13:55 ` [PATCH v4 09/10] crypto: acomp - add support for deflate " Giovanni Cabiddu
2016-05-31 13:55 ` [PATCH v4 10/10] crypto: acomp - update testmgr with support for acomp Giovanni Cabiddu
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.