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Message-Id: <1451882819-2810-2-git-send-email-iamjoonsoo.kim@lge.com>
Date: Mon, 4 Jan 2016 13:46:52 +0900
From: Joonsoo Kim <js1304@...il.com>
To: Herbert Xu <herbert@...dor.apana.org.au>
Cc: "David S. Miller" <davem@...emloft.net>,
Weigang Li <weigang.li@...el.com>,
Sergey Senozhatsky <sergey.senozhatsky.work@...il.com>,
Minchan Kim <minchan@...nel.org>, linux-crypto@...r.kernel.org,
linux-kernel@...r.kernel.org, Joonsoo Kim <iamjoonsoo.kim@....com>
Subject: [PATCH RFC 1/7] crypto/compress: remove unused pcomp interface
It is unused now, so remove it.
Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@....com>
---
crypto/Kconfig | 19 --
crypto/Makefile | 2 -
crypto/pcompress.c | 115 -----------
crypto/testmgr.c | 223 ----------------------
crypto/testmgr.h | 142 --------------
crypto/zlib.c | 381 -------------------------------------
include/crypto/compress.h | 145 --------------
include/crypto/internal/compress.h | 28 ---
include/linux/crypto.h | 1 -
9 files changed, 1056 deletions(-)
delete mode 100644 crypto/pcompress.c
delete mode 100644 crypto/zlib.c
delete mode 100644 include/crypto/compress.h
delete mode 100644 include/crypto/internal/compress.h
diff --git a/crypto/Kconfig b/crypto/Kconfig
index 7240821..c80d34f 100644
--- a/crypto/Kconfig
+++ b/crypto/Kconfig
@@ -84,15 +84,6 @@ config CRYPTO_RNG_DEFAULT
tristate
select CRYPTO_DRBG_MENU
-config CRYPTO_PCOMP
- tristate
- select CRYPTO_PCOMP2
- select CRYPTO_ALGAPI
-
-config CRYPTO_PCOMP2
- tristate
- select CRYPTO_ALGAPI2
-
config CRYPTO_AKCIPHER2
tristate
select CRYPTO_ALGAPI2
@@ -122,7 +113,6 @@ config CRYPTO_MANAGER2
select CRYPTO_AEAD2
select CRYPTO_HASH2
select CRYPTO_BLKCIPHER2
- select CRYPTO_PCOMP2
select CRYPTO_AKCIPHER2
config CRYPTO_USER
@@ -1504,15 +1494,6 @@ config CRYPTO_DEFLATE
You will most probably want this if using IPSec.
-config CRYPTO_ZLIB
- tristate "Zlib compression algorithm"
- select CRYPTO_PCOMP
- select ZLIB_INFLATE
- select ZLIB_DEFLATE
- select NLATTR
- help
- This is the zlib algorithm.
-
config CRYPTO_LZO
tristate "LZO compression algorithm"
select CRYPTO_ALGAPI
diff --git a/crypto/Makefile b/crypto/Makefile
index 2acdbbd..ffe18c9 100644
--- a/crypto/Makefile
+++ b/crypto/Makefile
@@ -28,7 +28,6 @@ crypto_hash-y += ahash.o
crypto_hash-y += shash.o
obj-$(CONFIG_CRYPTO_HASH2) += crypto_hash.o
-obj-$(CONFIG_CRYPTO_PCOMP2) += pcompress.o
obj-$(CONFIG_CRYPTO_AKCIPHER2) += akcipher.o
$(obj)/rsapubkey-asn1.o: $(obj)/rsapubkey-asn1.c $(obj)/rsapubkey-asn1.h
@@ -99,7 +98,6 @@ obj-$(CONFIG_CRYPTO_SALSA20) += salsa20_generic.o
obj-$(CONFIG_CRYPTO_CHACHA20) += chacha20_generic.o
obj-$(CONFIG_CRYPTO_POLY1305) += poly1305_generic.o
obj-$(CONFIG_CRYPTO_DEFLATE) += deflate.o
-obj-$(CONFIG_CRYPTO_ZLIB) += zlib.o
obj-$(CONFIG_CRYPTO_MICHAEL_MIC) += michael_mic.o
obj-$(CONFIG_CRYPTO_CRC32C) += crc32c_generic.o
obj-$(CONFIG_CRYPTO_CRC32) += crc32.o
diff --git a/crypto/pcompress.c b/crypto/pcompress.c
deleted file mode 100644
index 7a13b40..0000000
--- a/crypto/pcompress.c
+++ /dev/null
@@ -1,115 +0,0 @@
-/*
- * Cryptographic API.
- *
- * Partial (de)compression operations.
- *
- * Copyright 2008 Sony Corporation
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.
- * If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include <linux/crypto.h>
-#include <linux/errno.h>
-#include <linux/module.h>
-#include <linux/seq_file.h>
-#include <linux/string.h>
-#include <linux/cryptouser.h>
-#include <net/netlink.h>
-
-#include <crypto/compress.h>
-#include <crypto/internal/compress.h>
-
-#include "internal.h"
-
-
-static int crypto_pcomp_init(struct crypto_tfm *tfm, u32 type, u32 mask)
-{
- return 0;
-}
-
-static int crypto_pcomp_init_tfm(struct crypto_tfm *tfm)
-{
- return 0;
-}
-
-#ifdef CONFIG_NET
-static int crypto_pcomp_report(struct sk_buff *skb, struct crypto_alg *alg)
-{
- struct crypto_report_comp rpcomp;
-
- strncpy(rpcomp.type, "pcomp", sizeof(rpcomp.type));
- if (nla_put(skb, CRYPTOCFGA_REPORT_COMPRESS,
- sizeof(struct crypto_report_comp), &rpcomp))
- goto nla_put_failure;
- return 0;
-
-nla_put_failure:
- return -EMSGSIZE;
-}
-#else
-static int crypto_pcomp_report(struct sk_buff *skb, struct crypto_alg *alg)
-{
- return -ENOSYS;
-}
-#endif
-
-static void crypto_pcomp_show(struct seq_file *m, struct crypto_alg *alg)
- __attribute__ ((unused));
-static void crypto_pcomp_show(struct seq_file *m, struct crypto_alg *alg)
-{
- seq_printf(m, "type : pcomp\n");
-}
-
-static const struct crypto_type crypto_pcomp_type = {
- .extsize = crypto_alg_extsize,
- .init = crypto_pcomp_init,
- .init_tfm = crypto_pcomp_init_tfm,
-#ifdef CONFIG_PROC_FS
- .show = crypto_pcomp_show,
-#endif
- .report = crypto_pcomp_report,
- .maskclear = ~CRYPTO_ALG_TYPE_MASK,
- .maskset = CRYPTO_ALG_TYPE_MASK,
- .type = CRYPTO_ALG_TYPE_PCOMPRESS,
- .tfmsize = offsetof(struct crypto_pcomp, base),
-};
-
-struct crypto_pcomp *crypto_alloc_pcomp(const char *alg_name, u32 type,
- u32 mask)
-{
- return crypto_alloc_tfm(alg_name, &crypto_pcomp_type, type, mask);
-}
-EXPORT_SYMBOL_GPL(crypto_alloc_pcomp);
-
-int crypto_register_pcomp(struct pcomp_alg *alg)
-{
- struct crypto_alg *base = &alg->base;
-
- base->cra_type = &crypto_pcomp_type;
- base->cra_flags &= ~CRYPTO_ALG_TYPE_MASK;
- base->cra_flags |= CRYPTO_ALG_TYPE_PCOMPRESS;
-
- return crypto_register_alg(base);
-}
-EXPORT_SYMBOL_GPL(crypto_register_pcomp);
-
-int crypto_unregister_pcomp(struct pcomp_alg *alg)
-{
- return crypto_unregister_alg(&alg->base);
-}
-EXPORT_SYMBOL_GPL(crypto_unregister_pcomp);
-
-MODULE_LICENSE("GPL");
-MODULE_DESCRIPTION("Partial (de)compression type");
-MODULE_AUTHOR("Sony Corporation");
diff --git a/crypto/testmgr.c b/crypto/testmgr.c
index ae8c57fd..086aa4d 100644
--- a/crypto/testmgr.c
+++ b/crypto/testmgr.c
@@ -96,13 +96,6 @@ struct comp_test_suite {
} comp, decomp;
};
-struct pcomp_test_suite {
- struct {
- struct pcomp_testvec *vecs;
- unsigned int count;
- } comp, decomp;
-};
-
struct hash_test_suite {
struct hash_testvec *vecs;
unsigned int count;
@@ -133,7 +126,6 @@ struct alg_test_desc {
struct aead_test_suite aead;
struct cipher_test_suite cipher;
struct comp_test_suite comp;
- struct pcomp_test_suite pcomp;
struct hash_test_suite hash;
struct cprng_test_suite cprng;
struct drbg_test_suite drbg;
@@ -1293,183 +1285,6 @@ out:
return ret;
}
-static int test_pcomp(struct crypto_pcomp *tfm,
- struct pcomp_testvec *ctemplate,
- struct pcomp_testvec *dtemplate, int ctcount,
- int dtcount)
-{
- const char *algo = crypto_tfm_alg_driver_name(crypto_pcomp_tfm(tfm));
- unsigned int i;
- char result[COMP_BUF_SIZE];
- int res;
-
- for (i = 0; i < ctcount; i++) {
- struct comp_request req;
- unsigned int produced = 0;
-
- res = crypto_compress_setup(tfm, ctemplate[i].params,
- ctemplate[i].paramsize);
- if (res) {
- pr_err("alg: pcomp: compression setup failed on test "
- "%d for %s: error=%d\n", i + 1, algo, res);
- return res;
- }
-
- res = crypto_compress_init(tfm);
- if (res) {
- pr_err("alg: pcomp: compression init failed on test "
- "%d for %s: error=%d\n", i + 1, algo, res);
- return res;
- }
-
- memset(result, 0, sizeof(result));
-
- req.next_in = ctemplate[i].input;
- req.avail_in = ctemplate[i].inlen / 2;
- req.next_out = result;
- req.avail_out = ctemplate[i].outlen / 2;
-
- res = crypto_compress_update(tfm, &req);
- if (res < 0 && (res != -EAGAIN || req.avail_in)) {
- pr_err("alg: pcomp: compression update failed on test "
- "%d for %s: error=%d\n", i + 1, algo, res);
- return res;
- }
- if (res > 0)
- produced += res;
-
- /* Add remaining input data */
- req.avail_in += (ctemplate[i].inlen + 1) / 2;
-
- res = crypto_compress_update(tfm, &req);
- if (res < 0 && (res != -EAGAIN || req.avail_in)) {
- pr_err("alg: pcomp: compression update failed on test "
- "%d for %s: error=%d\n", i + 1, algo, res);
- return res;
- }
- if (res > 0)
- produced += res;
-
- /* Provide remaining output space */
- req.avail_out += COMP_BUF_SIZE - ctemplate[i].outlen / 2;
-
- res = crypto_compress_final(tfm, &req);
- if (res < 0) {
- pr_err("alg: pcomp: compression final failed on test "
- "%d for %s: error=%d\n", i + 1, algo, res);
- return res;
- }
- produced += res;
-
- if (COMP_BUF_SIZE - req.avail_out != ctemplate[i].outlen) {
- pr_err("alg: comp: Compression test %d failed for %s: "
- "output len = %d (expected %d)\n", i + 1, algo,
- COMP_BUF_SIZE - req.avail_out,
- ctemplate[i].outlen);
- return -EINVAL;
- }
-
- if (produced != ctemplate[i].outlen) {
- pr_err("alg: comp: Compression test %d failed for %s: "
- "returned len = %u (expected %d)\n", i + 1,
- algo, produced, ctemplate[i].outlen);
- return -EINVAL;
- }
-
- if (memcmp(result, ctemplate[i].output, ctemplate[i].outlen)) {
- pr_err("alg: pcomp: Compression test %d failed for "
- "%s\n", i + 1, algo);
- hexdump(result, ctemplate[i].outlen);
- return -EINVAL;
- }
- }
-
- for (i = 0; i < dtcount; i++) {
- struct comp_request req;
- unsigned int produced = 0;
-
- res = crypto_decompress_setup(tfm, dtemplate[i].params,
- dtemplate[i].paramsize);
- if (res) {
- pr_err("alg: pcomp: decompression setup failed on "
- "test %d for %s: error=%d\n", i + 1, algo, res);
- return res;
- }
-
- res = crypto_decompress_init(tfm);
- if (res) {
- pr_err("alg: pcomp: decompression init failed on test "
- "%d for %s: error=%d\n", i + 1, algo, res);
- return res;
- }
-
- memset(result, 0, sizeof(result));
-
- req.next_in = dtemplate[i].input;
- req.avail_in = dtemplate[i].inlen / 2;
- req.next_out = result;
- req.avail_out = dtemplate[i].outlen / 2;
-
- res = crypto_decompress_update(tfm, &req);
- if (res < 0 && (res != -EAGAIN || req.avail_in)) {
- pr_err("alg: pcomp: decompression update failed on "
- "test %d for %s: error=%d\n", i + 1, algo, res);
- return res;
- }
- if (res > 0)
- produced += res;
-
- /* Add remaining input data */
- req.avail_in += (dtemplate[i].inlen + 1) / 2;
-
- res = crypto_decompress_update(tfm, &req);
- if (res < 0 && (res != -EAGAIN || req.avail_in)) {
- pr_err("alg: pcomp: decompression update failed on "
- "test %d for %s: error=%d\n", i + 1, algo, res);
- return res;
- }
- if (res > 0)
- produced += res;
-
- /* Provide remaining output space */
- req.avail_out += COMP_BUF_SIZE - dtemplate[i].outlen / 2;
-
- res = crypto_decompress_final(tfm, &req);
- if (res < 0 && (res != -EAGAIN || req.avail_in)) {
- pr_err("alg: pcomp: decompression final failed on "
- "test %d for %s: error=%d\n", i + 1, algo, res);
- return res;
- }
- if (res > 0)
- produced += res;
-
- if (COMP_BUF_SIZE - req.avail_out != dtemplate[i].outlen) {
- pr_err("alg: comp: Decompression test %d failed for "
- "%s: output len = %d (expected %d)\n", i + 1,
- algo, COMP_BUF_SIZE - req.avail_out,
- dtemplate[i].outlen);
- return -EINVAL;
- }
-
- if (produced != dtemplate[i].outlen) {
- pr_err("alg: comp: Decompression test %d failed for "
- "%s: returned len = %u (expected %d)\n", i + 1,
- algo, produced, dtemplate[i].outlen);
- return -EINVAL;
- }
-
- if (memcmp(result, dtemplate[i].output, dtemplate[i].outlen)) {
- pr_err("alg: pcomp: Decompression test %d failed for "
- "%s\n", i + 1, algo);
- hexdump(result, dtemplate[i].outlen);
- return -EINVAL;
- }
- }
-
- return 0;
-}
-
-
static int test_cprng(struct crypto_rng *tfm, struct cprng_testvec *template,
unsigned int tcount)
{
@@ -1640,28 +1455,6 @@ static int alg_test_comp(const struct alg_test_desc *desc, const char *driver,
return err;
}
-static int alg_test_pcomp(const struct alg_test_desc *desc, const char *driver,
- u32 type, u32 mask)
-{
- struct crypto_pcomp *tfm;
- int err;
-
- tfm = crypto_alloc_pcomp(driver, type, mask);
- if (IS_ERR(tfm)) {
- pr_err("alg: pcomp: Failed to load transform for %s: %ld\n",
- driver, PTR_ERR(tfm));
- return PTR_ERR(tfm);
- }
-
- err = test_pcomp(tfm, desc->suite.pcomp.comp.vecs,
- desc->suite.pcomp.decomp.vecs,
- desc->suite.pcomp.comp.count,
- desc->suite.pcomp.decomp.count);
-
- crypto_free_pcomp(tfm);
- return err;
-}
-
static int alg_test_hash(const struct alg_test_desc *desc, const char *driver,
u32 type, u32 mask)
{
@@ -3840,22 +3633,6 @@ static const struct alg_test_desc alg_test_descs[] = {
}
}
}
- }, {
- .alg = "zlib",
- .test = alg_test_pcomp,
- .fips_allowed = 1,
- .suite = {
- .pcomp = {
- .comp = {
- .vecs = zlib_comp_tv_template,
- .count = ZLIB_COMP_TEST_VECTORS
- },
- .decomp = {
- .vecs = zlib_decomp_tv_template,
- .count = ZLIB_DECOMP_TEST_VECTORS
- }
- }
- }
}
};
diff --git a/crypto/testmgr.h b/crypto/testmgr.h
index da0a8fd..978f676 100644
--- a/crypto/testmgr.h
+++ b/crypto/testmgr.h
@@ -25,7 +25,6 @@
#define _CRYPTO_TESTMGR_H
#include <linux/netlink.h>
-#include <linux/zlib.h>
#include <crypto/compress.h>
@@ -32268,14 +32267,6 @@ struct comp_testvec {
char output[COMP_BUF_SIZE];
};
-struct pcomp_testvec {
- const void *params;
- unsigned int paramsize;
- int inlen, outlen;
- char input[COMP_BUF_SIZE];
- char output[COMP_BUF_SIZE];
-};
-
/*
* Deflate test vectors (null-terminated strings).
* Params: winbits=-11, Z_DEFAULT_COMPRESSION, MAX_MEM_LEVEL.
@@ -32356,139 +32347,6 @@ static struct comp_testvec deflate_decomp_tv_template[] = {
},
};
-#define ZLIB_COMP_TEST_VECTORS 2
-#define ZLIB_DECOMP_TEST_VECTORS 2
-
-static const struct {
- struct nlattr nla;
- int val;
-} deflate_comp_params[] = {
- {
- .nla = {
- .nla_len = NLA_HDRLEN + sizeof(int),
- .nla_type = ZLIB_COMP_LEVEL,
- },
- .val = Z_DEFAULT_COMPRESSION,
- }, {
- .nla = {
- .nla_len = NLA_HDRLEN + sizeof(int),
- .nla_type = ZLIB_COMP_METHOD,
- },
- .val = Z_DEFLATED,
- }, {
- .nla = {
- .nla_len = NLA_HDRLEN + sizeof(int),
- .nla_type = ZLIB_COMP_WINDOWBITS,
- },
- .val = -11,
- }, {
- .nla = {
- .nla_len = NLA_HDRLEN + sizeof(int),
- .nla_type = ZLIB_COMP_MEMLEVEL,
- },
- .val = MAX_MEM_LEVEL,
- }, {
- .nla = {
- .nla_len = NLA_HDRLEN + sizeof(int),
- .nla_type = ZLIB_COMP_STRATEGY,
- },
- .val = Z_DEFAULT_STRATEGY,
- }
-};
-
-static const struct {
- struct nlattr nla;
- int val;
-} deflate_decomp_params[] = {
- {
- .nla = {
- .nla_len = NLA_HDRLEN + sizeof(int),
- .nla_type = ZLIB_DECOMP_WINDOWBITS,
- },
- .val = -11,
- }
-};
-
-static struct pcomp_testvec zlib_comp_tv_template[] = {
- {
- .params = &deflate_comp_params,
- .paramsize = sizeof(deflate_comp_params),
- .inlen = 70,
- .outlen = 38,
- .input = "Join us now and share the software "
- "Join us now and share the software ",
- .output = "\xf3\xca\xcf\xcc\x53\x28\x2d\x56"
- "\xc8\xcb\x2f\x57\x48\xcc\x4b\x51"
- "\x28\xce\x48\x2c\x4a\x55\x28\xc9"
- "\x48\x55\x28\xce\x4f\x2b\x29\x07"
- "\x71\xbc\x08\x2b\x01\x00",
- }, {
- .params = &deflate_comp_params,
- .paramsize = sizeof(deflate_comp_params),
- .inlen = 191,
- .outlen = 122,
- .input = "This document describes a compression method based on the DEFLATE"
- "compression algorithm. This document defines the application of "
- "the DEFLATE algorithm to the IP Payload Compression Protocol.",
- .output = "\x5d\x8d\x31\x0e\xc2\x30\x10\x04"
- "\xbf\xb2\x2f\xc8\x1f\x10\x04\x09"
- "\x89\xc2\x85\x3f\x70\xb1\x2f\xf8"
- "\x24\xdb\x67\xd9\x47\xc1\xef\x49"
- "\x68\x12\x51\xae\x76\x67\xd6\x27"
- "\x19\x88\x1a\xde\x85\xab\x21\xf2"
- "\x08\x5d\x16\x1e\x20\x04\x2d\xad"
- "\xf3\x18\xa2\x15\x85\x2d\x69\xc4"
- "\x42\x83\x23\xb6\x6c\x89\x71\x9b"
- "\xef\xcf\x8b\x9f\xcf\x33\xca\x2f"
- "\xed\x62\xa9\x4c\x80\xff\x13\xaf"
- "\x52\x37\xed\x0e\x52\x6b\x59\x02"
- "\xd9\x4e\xe8\x7a\x76\x1d\x02\x98"
- "\xfe\x8a\x87\x83\xa3\x4f\x56\x8a"
- "\xb8\x9e\x8e\x5c\x57\xd3\xa0\x79"
- "\xfa\x02",
- },
-};
-
-static struct pcomp_testvec zlib_decomp_tv_template[] = {
- {
- .params = &deflate_decomp_params,
- .paramsize = sizeof(deflate_decomp_params),
- .inlen = 122,
- .outlen = 191,
- .input = "\x5d\x8d\x31\x0e\xc2\x30\x10\x04"
- "\xbf\xb2\x2f\xc8\x1f\x10\x04\x09"
- "\x89\xc2\x85\x3f\x70\xb1\x2f\xf8"
- "\x24\xdb\x67\xd9\x47\xc1\xef\x49"
- "\x68\x12\x51\xae\x76\x67\xd6\x27"
- "\x19\x88\x1a\xde\x85\xab\x21\xf2"
- "\x08\x5d\x16\x1e\x20\x04\x2d\xad"
- "\xf3\x18\xa2\x15\x85\x2d\x69\xc4"
- "\x42\x83\x23\xb6\x6c\x89\x71\x9b"
- "\xef\xcf\x8b\x9f\xcf\x33\xca\x2f"
- "\xed\x62\xa9\x4c\x80\xff\x13\xaf"
- "\x52\x37\xed\x0e\x52\x6b\x59\x02"
- "\xd9\x4e\xe8\x7a\x76\x1d\x02\x98"
- "\xfe\x8a\x87\x83\xa3\x4f\x56\x8a"
- "\xb8\x9e\x8e\x5c\x57\xd3\xa0\x79"
- "\xfa\x02",
- .output = "This document describes a compression method based on the DEFLATE"
- "compression algorithm. This document defines the application of "
- "the DEFLATE algorithm to the IP Payload Compression Protocol.",
- }, {
- .params = &deflate_decomp_params,
- .paramsize = sizeof(deflate_decomp_params),
- .inlen = 38,
- .outlen = 70,
- .input = "\xf3\xca\xcf\xcc\x53\x28\x2d\x56"
- "\xc8\xcb\x2f\x57\x48\xcc\x4b\x51"
- "\x28\xce\x48\x2c\x4a\x55\x28\xc9"
- "\x48\x55\x28\xce\x4f\x2b\x29\x07"
- "\x71\xbc\x08\x2b\x01\x00",
- .output = "Join us now and share the software "
- "Join us now and share the software ",
- },
-};
-
/*
* LZO test vectors (null-terminated strings).
*/
diff --git a/crypto/zlib.c b/crypto/zlib.c
deleted file mode 100644
index d51a30a..0000000
--- a/crypto/zlib.c
+++ /dev/null
@@ -1,381 +0,0 @@
-/*
- * Cryptographic API.
- *
- * Zlib algorithm
- *
- * Copyright 2008 Sony Corporation
- *
- * Based on deflate.c, which is
- * Copyright (c) 2003 James Morris <jmorris@...ercode.com.au>
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the Free
- * Software Foundation; either version 2 of the License, or (at your option)
- * any later version.
- *
- * FIXME: deflate transforms will require up to a total of about 436k of kernel
- * memory on i386 (390k for compression, the rest for decompression), as the
- * current zlib kernel code uses a worst case pre-allocation system by default.
- * This needs to be fixed so that the amount of memory required is properly
- * related to the winbits and memlevel parameters.
- */
-
-#define pr_fmt(fmt) "%s: " fmt, __func__
-
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/zlib.h>
-#include <linux/vmalloc.h>
-#include <linux/interrupt.h>
-#include <linux/mm.h>
-#include <linux/net.h>
-
-#include <crypto/internal/compress.h>
-
-#include <net/netlink.h>
-
-
-struct zlib_ctx {
- struct z_stream_s comp_stream;
- struct z_stream_s decomp_stream;
- int decomp_windowBits;
-};
-
-
-static void zlib_comp_exit(struct zlib_ctx *ctx)
-{
- struct z_stream_s *stream = &ctx->comp_stream;
-
- if (stream->workspace) {
- zlib_deflateEnd(stream);
- vfree(stream->workspace);
- stream->workspace = NULL;
- }
-}
-
-static void zlib_decomp_exit(struct zlib_ctx *ctx)
-{
- struct z_stream_s *stream = &ctx->decomp_stream;
-
- if (stream->workspace) {
- zlib_inflateEnd(stream);
- vfree(stream->workspace);
- stream->workspace = NULL;
- }
-}
-
-static int zlib_init(struct crypto_tfm *tfm)
-{
- return 0;
-}
-
-static void zlib_exit(struct crypto_tfm *tfm)
-{
- struct zlib_ctx *ctx = crypto_tfm_ctx(tfm);
-
- zlib_comp_exit(ctx);
- zlib_decomp_exit(ctx);
-}
-
-
-static int zlib_compress_setup(struct crypto_pcomp *tfm, const void *params,
- unsigned int len)
-{
- struct zlib_ctx *ctx = crypto_tfm_ctx(crypto_pcomp_tfm(tfm));
- struct z_stream_s *stream = &ctx->comp_stream;
- struct nlattr *tb[ZLIB_COMP_MAX + 1];
- int window_bits, mem_level;
- size_t workspacesize;
- int ret;
-
- ret = nla_parse(tb, ZLIB_COMP_MAX, params, len, NULL);
- if (ret)
- return ret;
-
- zlib_comp_exit(ctx);
-
- window_bits = tb[ZLIB_COMP_WINDOWBITS]
- ? nla_get_u32(tb[ZLIB_COMP_WINDOWBITS])
- : MAX_WBITS;
- mem_level = tb[ZLIB_COMP_MEMLEVEL]
- ? nla_get_u32(tb[ZLIB_COMP_MEMLEVEL])
- : DEF_MEM_LEVEL;
-
- workspacesize = zlib_deflate_workspacesize(window_bits, mem_level);
- stream->workspace = vzalloc(workspacesize);
- if (!stream->workspace)
- return -ENOMEM;
-
- ret = zlib_deflateInit2(stream,
- tb[ZLIB_COMP_LEVEL]
- ? nla_get_u32(tb[ZLIB_COMP_LEVEL])
- : Z_DEFAULT_COMPRESSION,
- tb[ZLIB_COMP_METHOD]
- ? nla_get_u32(tb[ZLIB_COMP_METHOD])
- : Z_DEFLATED,
- window_bits,
- mem_level,
- tb[ZLIB_COMP_STRATEGY]
- ? nla_get_u32(tb[ZLIB_COMP_STRATEGY])
- : Z_DEFAULT_STRATEGY);
- if (ret != Z_OK) {
- vfree(stream->workspace);
- stream->workspace = NULL;
- return -EINVAL;
- }
-
- return 0;
-}
-
-static int zlib_compress_init(struct crypto_pcomp *tfm)
-{
- int ret;
- struct zlib_ctx *dctx = crypto_tfm_ctx(crypto_pcomp_tfm(tfm));
- struct z_stream_s *stream = &dctx->comp_stream;
-
- ret = zlib_deflateReset(stream);
- if (ret != Z_OK)
- return -EINVAL;
-
- return 0;
-}
-
-static int zlib_compress_update(struct crypto_pcomp *tfm,
- struct comp_request *req)
-{
- int ret;
- struct zlib_ctx *dctx = crypto_tfm_ctx(crypto_pcomp_tfm(tfm));
- struct z_stream_s *stream = &dctx->comp_stream;
-
- pr_debug("avail_in %u, avail_out %u\n", req->avail_in, req->avail_out);
- stream->next_in = req->next_in;
- stream->avail_in = req->avail_in;
- stream->next_out = req->next_out;
- stream->avail_out = req->avail_out;
-
- ret = zlib_deflate(stream, Z_NO_FLUSH);
- switch (ret) {
- case Z_OK:
- break;
-
- case Z_BUF_ERROR:
- pr_debug("zlib_deflate could not make progress\n");
- return -EAGAIN;
-
- default:
- pr_debug("zlib_deflate failed %d\n", ret);
- return -EINVAL;
- }
-
- ret = req->avail_out - stream->avail_out;
- pr_debug("avail_in %lu, avail_out %lu (consumed %lu, produced %u)\n",
- stream->avail_in, stream->avail_out,
- req->avail_in - stream->avail_in, ret);
- req->next_in = stream->next_in;
- req->avail_in = stream->avail_in;
- req->next_out = stream->next_out;
- req->avail_out = stream->avail_out;
- return ret;
-}
-
-static int zlib_compress_final(struct crypto_pcomp *tfm,
- struct comp_request *req)
-{
- int ret;
- struct zlib_ctx *dctx = crypto_tfm_ctx(crypto_pcomp_tfm(tfm));
- struct z_stream_s *stream = &dctx->comp_stream;
-
- pr_debug("avail_in %u, avail_out %u\n", req->avail_in, req->avail_out);
- stream->next_in = req->next_in;
- stream->avail_in = req->avail_in;
- stream->next_out = req->next_out;
- stream->avail_out = req->avail_out;
-
- ret = zlib_deflate(stream, Z_FINISH);
- if (ret != Z_STREAM_END) {
- pr_debug("zlib_deflate failed %d\n", ret);
- return -EINVAL;
- }
-
- ret = req->avail_out - stream->avail_out;
- pr_debug("avail_in %lu, avail_out %lu (consumed %lu, produced %u)\n",
- stream->avail_in, stream->avail_out,
- req->avail_in - stream->avail_in, ret);
- req->next_in = stream->next_in;
- req->avail_in = stream->avail_in;
- req->next_out = stream->next_out;
- req->avail_out = stream->avail_out;
- return ret;
-}
-
-
-static int zlib_decompress_setup(struct crypto_pcomp *tfm, const void *params,
- unsigned int len)
-{
- struct zlib_ctx *ctx = crypto_tfm_ctx(crypto_pcomp_tfm(tfm));
- struct z_stream_s *stream = &ctx->decomp_stream;
- struct nlattr *tb[ZLIB_DECOMP_MAX + 1];
- int ret = 0;
-
- ret = nla_parse(tb, ZLIB_DECOMP_MAX, params, len, NULL);
- if (ret)
- return ret;
-
- zlib_decomp_exit(ctx);
-
- ctx->decomp_windowBits = tb[ZLIB_DECOMP_WINDOWBITS]
- ? nla_get_u32(tb[ZLIB_DECOMP_WINDOWBITS])
- : DEF_WBITS;
-
- stream->workspace = vzalloc(zlib_inflate_workspacesize());
- if (!stream->workspace)
- return -ENOMEM;
-
- ret = zlib_inflateInit2(stream, ctx->decomp_windowBits);
- if (ret != Z_OK) {
- vfree(stream->workspace);
- stream->workspace = NULL;
- return -EINVAL;
- }
-
- return 0;
-}
-
-static int zlib_decompress_init(struct crypto_pcomp *tfm)
-{
- int ret;
- struct zlib_ctx *dctx = crypto_tfm_ctx(crypto_pcomp_tfm(tfm));
- struct z_stream_s *stream = &dctx->decomp_stream;
-
- ret = zlib_inflateReset(stream);
- if (ret != Z_OK)
- return -EINVAL;
-
- return 0;
-}
-
-static int zlib_decompress_update(struct crypto_pcomp *tfm,
- struct comp_request *req)
-{
- int ret;
- struct zlib_ctx *dctx = crypto_tfm_ctx(crypto_pcomp_tfm(tfm));
- struct z_stream_s *stream = &dctx->decomp_stream;
-
- pr_debug("avail_in %u, avail_out %u\n", req->avail_in, req->avail_out);
- stream->next_in = req->next_in;
- stream->avail_in = req->avail_in;
- stream->next_out = req->next_out;
- stream->avail_out = req->avail_out;
-
- ret = zlib_inflate(stream, Z_SYNC_FLUSH);
- switch (ret) {
- case Z_OK:
- case Z_STREAM_END:
- break;
-
- case Z_BUF_ERROR:
- pr_debug("zlib_inflate could not make progress\n");
- return -EAGAIN;
-
- default:
- pr_debug("zlib_inflate failed %d\n", ret);
- return -EINVAL;
- }
-
- ret = req->avail_out - stream->avail_out;
- pr_debug("avail_in %lu, avail_out %lu (consumed %lu, produced %u)\n",
- stream->avail_in, stream->avail_out,
- req->avail_in - stream->avail_in, ret);
- req->next_in = stream->next_in;
- req->avail_in = stream->avail_in;
- req->next_out = stream->next_out;
- req->avail_out = stream->avail_out;
- return ret;
-}
-
-static int zlib_decompress_final(struct crypto_pcomp *tfm,
- struct comp_request *req)
-{
- int ret;
- struct zlib_ctx *dctx = crypto_tfm_ctx(crypto_pcomp_tfm(tfm));
- struct z_stream_s *stream = &dctx->decomp_stream;
-
- pr_debug("avail_in %u, avail_out %u\n", req->avail_in, req->avail_out);
- stream->next_in = req->next_in;
- stream->avail_in = req->avail_in;
- stream->next_out = req->next_out;
- stream->avail_out = req->avail_out;
-
- if (dctx->decomp_windowBits < 0) {
- ret = zlib_inflate(stream, Z_SYNC_FLUSH);
- /*
- * Work around a bug in zlib, which sometimes wants to taste an
- * extra byte when being used in the (undocumented) raw deflate
- * mode. (From USAGI).
- */
- if (ret == Z_OK && !stream->avail_in && stream->avail_out) {
- const void *saved_next_in = stream->next_in;
- u8 zerostuff = 0;
-
- stream->next_in = &zerostuff;
- stream->avail_in = 1;
- ret = zlib_inflate(stream, Z_FINISH);
- stream->next_in = saved_next_in;
- stream->avail_in = 0;
- }
- } else
- ret = zlib_inflate(stream, Z_FINISH);
- if (ret != Z_STREAM_END) {
- pr_debug("zlib_inflate failed %d\n", ret);
- return -EINVAL;
- }
-
- ret = req->avail_out - stream->avail_out;
- pr_debug("avail_in %lu, avail_out %lu (consumed %lu, produced %u)\n",
- stream->avail_in, stream->avail_out,
- req->avail_in - stream->avail_in, ret);
- req->next_in = stream->next_in;
- req->avail_in = stream->avail_in;
- req->next_out = stream->next_out;
- req->avail_out = stream->avail_out;
- return ret;
-}
-
-
-static struct pcomp_alg zlib_alg = {
- .compress_setup = zlib_compress_setup,
- .compress_init = zlib_compress_init,
- .compress_update = zlib_compress_update,
- .compress_final = zlib_compress_final,
- .decompress_setup = zlib_decompress_setup,
- .decompress_init = zlib_decompress_init,
- .decompress_update = zlib_decompress_update,
- .decompress_final = zlib_decompress_final,
-
- .base = {
- .cra_name = "zlib",
- .cra_flags = CRYPTO_ALG_TYPE_PCOMPRESS,
- .cra_ctxsize = sizeof(struct zlib_ctx),
- .cra_module = THIS_MODULE,
- .cra_init = zlib_init,
- .cra_exit = zlib_exit,
- }
-};
-
-static int __init zlib_mod_init(void)
-{
- return crypto_register_pcomp(&zlib_alg);
-}
-
-static void __exit zlib_mod_fini(void)
-{
- crypto_unregister_pcomp(&zlib_alg);
-}
-
-module_init(zlib_mod_init);
-module_exit(zlib_mod_fini);
-
-MODULE_LICENSE("GPL");
-MODULE_DESCRIPTION("Zlib Compression Algorithm");
-MODULE_AUTHOR("Sony Corporation");
-MODULE_ALIAS_CRYPTO("zlib");
diff --git a/include/crypto/compress.h b/include/crypto/compress.h
deleted file mode 100644
index 5b67af8..0000000
--- a/include/crypto/compress.h
+++ /dev/null
@@ -1,145 +0,0 @@
-/*
- * Compress: Compression algorithms under the cryptographic API.
- *
- * Copyright 2008 Sony Corporation
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.
- * If not, see <http://www.gnu.org/licenses/>.
- */
-
-#ifndef _CRYPTO_COMPRESS_H
-#define _CRYPTO_COMPRESS_H
-
-#include <linux/crypto.h>
-
-
-struct comp_request {
- const void *next_in; /* next input byte */
- void *next_out; /* next output byte */
- unsigned int avail_in; /* bytes available at next_in */
- unsigned int avail_out; /* bytes available at next_out */
-};
-
-enum zlib_comp_params {
- ZLIB_COMP_LEVEL = 1, /* e.g. Z_DEFAULT_COMPRESSION */
- ZLIB_COMP_METHOD, /* e.g. Z_DEFLATED */
- ZLIB_COMP_WINDOWBITS, /* e.g. MAX_WBITS */
- ZLIB_COMP_MEMLEVEL, /* e.g. DEF_MEM_LEVEL */
- ZLIB_COMP_STRATEGY, /* e.g. Z_DEFAULT_STRATEGY */
- __ZLIB_COMP_MAX,
-};
-
-#define ZLIB_COMP_MAX (__ZLIB_COMP_MAX - 1)
-
-
-enum zlib_decomp_params {
- ZLIB_DECOMP_WINDOWBITS = 1, /* e.g. DEF_WBITS */
- __ZLIB_DECOMP_MAX,
-};
-
-#define ZLIB_DECOMP_MAX (__ZLIB_DECOMP_MAX - 1)
-
-
-struct crypto_pcomp {
- struct crypto_tfm base;
-};
-
-struct pcomp_alg {
- int (*compress_setup)(struct crypto_pcomp *tfm, const void *params,
- unsigned int len);
- int (*compress_init)(struct crypto_pcomp *tfm);
- int (*compress_update)(struct crypto_pcomp *tfm,
- struct comp_request *req);
- int (*compress_final)(struct crypto_pcomp *tfm,
- struct comp_request *req);
- int (*decompress_setup)(struct crypto_pcomp *tfm, const void *params,
- unsigned int len);
- int (*decompress_init)(struct crypto_pcomp *tfm);
- int (*decompress_update)(struct crypto_pcomp *tfm,
- struct comp_request *req);
- int (*decompress_final)(struct crypto_pcomp *tfm,
- struct comp_request *req);
-
- struct crypto_alg base;
-};
-
-extern struct crypto_pcomp *crypto_alloc_pcomp(const char *alg_name, u32 type,
- u32 mask);
-
-static inline struct crypto_tfm *crypto_pcomp_tfm(struct crypto_pcomp *tfm)
-{
- return &tfm->base;
-}
-
-static inline void crypto_free_pcomp(struct crypto_pcomp *tfm)
-{
- crypto_destroy_tfm(tfm, crypto_pcomp_tfm(tfm));
-}
-
-static inline struct pcomp_alg *__crypto_pcomp_alg(struct crypto_alg *alg)
-{
- return container_of(alg, struct pcomp_alg, base);
-}
-
-static inline struct pcomp_alg *crypto_pcomp_alg(struct crypto_pcomp *tfm)
-{
- return __crypto_pcomp_alg(crypto_pcomp_tfm(tfm)->__crt_alg);
-}
-
-static inline int crypto_compress_setup(struct crypto_pcomp *tfm,
- const void *params, unsigned int len)
-{
- return crypto_pcomp_alg(tfm)->compress_setup(tfm, params, len);
-}
-
-static inline int crypto_compress_init(struct crypto_pcomp *tfm)
-{
- return crypto_pcomp_alg(tfm)->compress_init(tfm);
-}
-
-static inline int crypto_compress_update(struct crypto_pcomp *tfm,
- struct comp_request *req)
-{
- return crypto_pcomp_alg(tfm)->compress_update(tfm, req);
-}
-
-static inline int crypto_compress_final(struct crypto_pcomp *tfm,
- struct comp_request *req)
-{
- return crypto_pcomp_alg(tfm)->compress_final(tfm, req);
-}
-
-static inline int crypto_decompress_setup(struct crypto_pcomp *tfm,
- const void *params, unsigned int len)
-{
- return crypto_pcomp_alg(tfm)->decompress_setup(tfm, params, len);
-}
-
-static inline int crypto_decompress_init(struct crypto_pcomp *tfm)
-{
- return crypto_pcomp_alg(tfm)->decompress_init(tfm);
-}
-
-static inline int crypto_decompress_update(struct crypto_pcomp *tfm,
- struct comp_request *req)
-{
- return crypto_pcomp_alg(tfm)->decompress_update(tfm, req);
-}
-
-static inline int crypto_decompress_final(struct crypto_pcomp *tfm,
- struct comp_request *req)
-{
- return crypto_pcomp_alg(tfm)->decompress_final(tfm, req);
-}
-
-#endif /* _CRYPTO_COMPRESS_H */
diff --git a/include/crypto/internal/compress.h b/include/crypto/internal/compress.h
deleted file mode 100644
index 178a888..0000000
--- a/include/crypto/internal/compress.h
+++ /dev/null
@@ -1,28 +0,0 @@
-/*
- * Compress: Compression algorithms under the cryptographic API.
- *
- * Copyright 2008 Sony Corporation
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.
- * If not, see <http://www.gnu.org/licenses/>.
- */
-
-#ifndef _CRYPTO_INTERNAL_COMPRESS_H
-#define _CRYPTO_INTERNAL_COMPRESS_H
-
-#include <crypto/compress.h>
-
-extern int crypto_register_pcomp(struct pcomp_alg *alg);
-extern int crypto_unregister_pcomp(struct pcomp_alg *alg);
-
-#endif /* _CRYPTO_INTERNAL_COMPRESS_H */
diff --git a/include/linux/crypto.h b/include/linux/crypto.h
index e71cb70..ab2a745 100644
--- a/include/linux/crypto.h
+++ b/include/linux/crypto.h
@@ -54,7 +54,6 @@
#define CRYPTO_ALG_TYPE_AHASH 0x0000000a
#define CRYPTO_ALG_TYPE_RNG 0x0000000c
#define CRYPTO_ALG_TYPE_AKCIPHER 0x0000000d
-#define CRYPTO_ALG_TYPE_PCOMPRESS 0x0000000f
#define CRYPTO_ALG_TYPE_HASH_MASK 0x0000000e
#define CRYPTO_ALG_TYPE_AHASH_MASK 0x0000000c
--
1.9.1
--
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