diff options
Diffstat (limited to 'drivers/crypto/cavium/zip/zip_crypto.c')
| -rw-r--r-- | drivers/crypto/cavium/zip/zip_crypto.c | 261 |
1 files changed, 0 insertions, 261 deletions
diff --git a/drivers/crypto/cavium/zip/zip_crypto.c b/drivers/crypto/cavium/zip/zip_crypto.c deleted file mode 100644 index 02e87f2d50db..000000000000 --- a/drivers/crypto/cavium/zip/zip_crypto.c +++ /dev/null @@ -1,261 +0,0 @@ -/***********************license start************************************ - * Copyright (c) 2003-2017 Cavium, Inc. - * All rights reserved. - * - * License: one of 'Cavium License' or 'GNU General Public License Version 2' - * - * This file is provided under the terms of the Cavium License (see below) - * or under the terms of GNU General Public License, Version 2, as - * published by the Free Software Foundation. When using or redistributing - * this file, you may do so under either license. - * - * Cavium License: Redistribution and use in source and binary forms, with - * or without modification, are permitted provided that the following - * conditions are met: - * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * - * * Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following - * disclaimer in the documentation and/or other materials provided - * with the distribution. - * - * * Neither the name of Cavium Inc. nor the names of its contributors may be - * used to endorse or promote products derived from this software without - * specific prior written permission. - * - * This Software, including technical data, may be subject to U.S. export - * control laws, including the U.S. Export Administration Act and its - * associated regulations, and may be subject to export or import - * regulations in other countries. - * - * TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE SOFTWARE IS PROVIDED "AS IS" - * AND WITH ALL FAULTS AND CAVIUM INC. MAKES NO PROMISES, REPRESENTATIONS - * OR WARRANTIES, EITHER EXPRESS, IMPLIED, STATUTORY, OR OTHERWISE, WITH - * RESPECT TO THE SOFTWARE, INCLUDING ITS CONDITION, ITS CONFORMITY TO ANY - * REPRESENTATION OR DESCRIPTION, OR THE EXISTENCE OF ANY LATENT OR PATENT - * DEFECTS, AND CAVIUM SPECIFICALLY DISCLAIMS ALL IMPLIED (IF ANY) - * WARRANTIES OF TITLE, MERCHANTABILITY, NONINFRINGEMENT, FITNESS FOR A - * PARTICULAR PURPOSE, LACK OF VIRUSES, ACCURACY OR COMPLETENESS, QUIET - * ENJOYMENT, QUIET POSSESSION OR CORRESPONDENCE TO DESCRIPTION. THE - * ENTIRE RISK ARISING OUT OF USE OR PERFORMANCE OF THE SOFTWARE LIES - * WITH YOU. - ***********************license end**************************************/ - -#include "zip_crypto.h" - -static void zip_static_init_zip_ops(struct zip_operation *zip_ops, - int lzs_flag) -{ - zip_ops->flush = ZIP_FLUSH_FINISH; - - /* equivalent to level 6 of opensource zlib */ - zip_ops->speed = 1; - - if (!lzs_flag) { - zip_ops->ccode = 0; /* Auto Huffman */ - zip_ops->lzs_flag = 0; - zip_ops->format = ZLIB_FORMAT; - } else { - zip_ops->ccode = 3; /* LZS Encoding */ - zip_ops->lzs_flag = 1; - zip_ops->format = LZS_FORMAT; - } - zip_ops->begin_file = 1; - zip_ops->history_len = 0; - zip_ops->end_file = 1; - zip_ops->compcode = 0; - zip_ops->csum = 1; /* Adler checksum desired */ -} - -static int zip_ctx_init(struct zip_kernel_ctx *zip_ctx, int lzs_flag) -{ - struct zip_operation *comp_ctx = &zip_ctx->zip_comp; - struct zip_operation *decomp_ctx = &zip_ctx->zip_decomp; - - zip_static_init_zip_ops(comp_ctx, lzs_flag); - zip_static_init_zip_ops(decomp_ctx, lzs_flag); - - comp_ctx->input = zip_data_buf_alloc(MAX_INPUT_BUFFER_SIZE); - if (!comp_ctx->input) - return -ENOMEM; - - comp_ctx->output = zip_data_buf_alloc(MAX_OUTPUT_BUFFER_SIZE); - if (!comp_ctx->output) - goto err_comp_input; - - decomp_ctx->input = zip_data_buf_alloc(MAX_INPUT_BUFFER_SIZE); - if (!decomp_ctx->input) - goto err_comp_output; - - decomp_ctx->output = zip_data_buf_alloc(MAX_OUTPUT_BUFFER_SIZE); - if (!decomp_ctx->output) - goto err_decomp_input; - - return 0; - -err_decomp_input: - zip_data_buf_free(decomp_ctx->input, MAX_INPUT_BUFFER_SIZE); - -err_comp_output: - zip_data_buf_free(comp_ctx->output, MAX_OUTPUT_BUFFER_SIZE); - -err_comp_input: - zip_data_buf_free(comp_ctx->input, MAX_INPUT_BUFFER_SIZE); - - return -ENOMEM; -} - -static void zip_ctx_exit(struct zip_kernel_ctx *zip_ctx) -{ - struct zip_operation *comp_ctx = &zip_ctx->zip_comp; - struct zip_operation *dec_ctx = &zip_ctx->zip_decomp; - - zip_data_buf_free(comp_ctx->input, MAX_INPUT_BUFFER_SIZE); - zip_data_buf_free(comp_ctx->output, MAX_OUTPUT_BUFFER_SIZE); - - zip_data_buf_free(dec_ctx->input, MAX_INPUT_BUFFER_SIZE); - zip_data_buf_free(dec_ctx->output, MAX_OUTPUT_BUFFER_SIZE); -} - -static int zip_compress(const u8 *src, unsigned int slen, - u8 *dst, unsigned int *dlen, - struct zip_kernel_ctx *zip_ctx) -{ - struct zip_operation *zip_ops = NULL; - struct zip_state *zip_state; - struct zip_device *zip = NULL; - int ret; - - if (!zip_ctx || !src || !dst || !dlen) - return -ENOMEM; - - zip = zip_get_device(zip_get_node_id()); - if (!zip) - return -ENODEV; - - zip_state = kzalloc(sizeof(*zip_state), GFP_ATOMIC); - if (!zip_state) - return -ENOMEM; - - zip_ops = &zip_ctx->zip_comp; - - zip_ops->input_len = slen; - zip_ops->output_len = *dlen; - memcpy(zip_ops->input, src, slen); - - ret = zip_deflate(zip_ops, zip_state, zip); - - if (!ret) { - *dlen = zip_ops->output_len; - memcpy(dst, zip_ops->output, *dlen); - } - kfree(zip_state); - return ret; -} - -static int zip_decompress(const u8 *src, unsigned int slen, - u8 *dst, unsigned int *dlen, - struct zip_kernel_ctx *zip_ctx) -{ - struct zip_operation *zip_ops = NULL; - struct zip_state *zip_state; - struct zip_device *zip = NULL; - int ret; - - if (!zip_ctx || !src || !dst || !dlen) - return -ENOMEM; - - zip = zip_get_device(zip_get_node_id()); - if (!zip) - return -ENODEV; - - zip_state = kzalloc(sizeof(*zip_state), GFP_ATOMIC); - if (!zip_state) - return -ENOMEM; - - zip_ops = &zip_ctx->zip_decomp; - memcpy(zip_ops->input, src, slen); - - /* Work around for a bug in zlib which needs an extra bytes sometimes */ - if (zip_ops->ccode != 3) /* Not LZS Encoding */ - zip_ops->input[slen++] = 0; - - zip_ops->input_len = slen; - zip_ops->output_len = *dlen; - - ret = zip_inflate(zip_ops, zip_state, zip); - - if (!ret) { - *dlen = zip_ops->output_len; - memcpy(dst, zip_ops->output, *dlen); - } - kfree(zip_state); - return ret; -} - -/* SCOMP framework start */ -void *zip_alloc_scomp_ctx_deflate(void) -{ - int ret; - struct zip_kernel_ctx *zip_ctx; - - zip_ctx = kzalloc(sizeof(*zip_ctx), GFP_KERNEL); - if (!zip_ctx) - return ERR_PTR(-ENOMEM); - - ret = zip_ctx_init(zip_ctx, 0); - - if (ret) { - kfree_sensitive(zip_ctx); - return ERR_PTR(ret); - } - - return zip_ctx; -} - -void *zip_alloc_scomp_ctx_lzs(void) -{ - int ret; - struct zip_kernel_ctx *zip_ctx; - - zip_ctx = kzalloc(sizeof(*zip_ctx), GFP_KERNEL); - if (!zip_ctx) - return ERR_PTR(-ENOMEM); - - ret = zip_ctx_init(zip_ctx, 1); - - if (ret) { - kfree_sensitive(zip_ctx); - return ERR_PTR(ret); - } - - return zip_ctx; -} - -void zip_free_scomp_ctx(void *ctx) -{ - struct zip_kernel_ctx *zip_ctx = ctx; - - zip_ctx_exit(zip_ctx); - kfree_sensitive(zip_ctx); -} - -int zip_scomp_compress(struct crypto_scomp *tfm, - const u8 *src, unsigned int slen, - u8 *dst, unsigned int *dlen, void *ctx) -{ - struct zip_kernel_ctx *zip_ctx = ctx; - - return zip_compress(src, slen, dst, dlen, zip_ctx); -} - -int zip_scomp_decompress(struct crypto_scomp *tfm, - const u8 *src, unsigned int slen, - u8 *dst, unsigned int *dlen, void *ctx) -{ - struct zip_kernel_ctx *zip_ctx = ctx; - - return zip_decompress(src, slen, dst, dlen, zip_ctx); -} /* SCOMP framework end */ |