1*f05845fcSMahipal Challa /***********************license start************************************ 2*f05845fcSMahipal Challa * Copyright (c) 2003-2017 Cavium, Inc. 3*f05845fcSMahipal Challa * All rights reserved. 4*f05845fcSMahipal Challa * 5*f05845fcSMahipal Challa * License: one of 'Cavium License' or 'GNU General Public License Version 2' 6*f05845fcSMahipal Challa * 7*f05845fcSMahipal Challa * This file is provided under the terms of the Cavium License (see below) 8*f05845fcSMahipal Challa * or under the terms of GNU General Public License, Version 2, as 9*f05845fcSMahipal Challa * published by the Free Software Foundation. When using or redistributing 10*f05845fcSMahipal Challa * this file, you may do so under either license. 11*f05845fcSMahipal Challa * 12*f05845fcSMahipal Challa * Cavium License: Redistribution and use in source and binary forms, with 13*f05845fcSMahipal Challa * or without modification, are permitted provided that the following 14*f05845fcSMahipal Challa * conditions are met: 15*f05845fcSMahipal Challa * 16*f05845fcSMahipal Challa * * Redistributions of source code must retain the above copyright 17*f05845fcSMahipal Challa * notice, this list of conditions and the following disclaimer. 18*f05845fcSMahipal Challa * 19*f05845fcSMahipal Challa * * Redistributions in binary form must reproduce the above 20*f05845fcSMahipal Challa * copyright notice, this list of conditions and the following 21*f05845fcSMahipal Challa * disclaimer in the documentation and/or other materials provided 22*f05845fcSMahipal Challa * with the distribution. 23*f05845fcSMahipal Challa * 24*f05845fcSMahipal Challa * * Neither the name of Cavium Inc. nor the names of its contributors may be 25*f05845fcSMahipal Challa * used to endorse or promote products derived from this software without 26*f05845fcSMahipal Challa * specific prior written permission. 27*f05845fcSMahipal Challa * 28*f05845fcSMahipal Challa * This Software, including technical data, may be subject to U.S. export 29*f05845fcSMahipal Challa * control laws, including the U.S. Export Administration Act and its 30*f05845fcSMahipal Challa * associated regulations, and may be subject to export or import 31*f05845fcSMahipal Challa * regulations in other countries. 32*f05845fcSMahipal Challa * 33*f05845fcSMahipal Challa * TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE SOFTWARE IS PROVIDED "AS IS" 34*f05845fcSMahipal Challa * AND WITH ALL FAULTS AND CAVIUM INC. MAKES NO PROMISES, REPRESENTATIONS 35*f05845fcSMahipal Challa * OR WARRANTIES, EITHER EXPRESS, IMPLIED, STATUTORY, OR OTHERWISE, WITH 36*f05845fcSMahipal Challa * RESPECT TO THE SOFTWARE, INCLUDING ITS CONDITION, ITS CONFORMITY TO ANY 37*f05845fcSMahipal Challa * REPRESENTATION OR DESCRIPTION, OR THE EXISTENCE OF ANY LATENT OR PATENT 38*f05845fcSMahipal Challa * DEFECTS, AND CAVIUM SPECIFICALLY DISCLAIMS ALL IMPLIED (IF ANY) 39*f05845fcSMahipal Challa * WARRANTIES OF TITLE, MERCHANTABILITY, NONINFRINGEMENT, FITNESS FOR A 40*f05845fcSMahipal Challa * PARTICULAR PURPOSE, LACK OF VIRUSES, ACCURACY OR COMPLETENESS, QUIET 41*f05845fcSMahipal Challa * ENJOYMENT, QUIET POSSESSION OR CORRESPONDENCE TO DESCRIPTION. THE 42*f05845fcSMahipal Challa * ENTIRE RISK ARISING OUT OF USE OR PERFORMANCE OF THE SOFTWARE LIES 43*f05845fcSMahipal Challa * WITH YOU. 44*f05845fcSMahipal Challa ***********************license end**************************************/ 45*f05845fcSMahipal Challa 46*f05845fcSMahipal Challa #include "zip_crypto.h" 47*f05845fcSMahipal Challa 48*f05845fcSMahipal Challa static void zip_static_init_zip_ops(struct zip_operation *zip_ops, 49*f05845fcSMahipal Challa int lzs_flag) 50*f05845fcSMahipal Challa { 51*f05845fcSMahipal Challa zip_ops->flush = ZIP_FLUSH_FINISH; 52*f05845fcSMahipal Challa 53*f05845fcSMahipal Challa /* equivalent to level 6 of opensource zlib */ 54*f05845fcSMahipal Challa zip_ops->speed = 1; 55*f05845fcSMahipal Challa 56*f05845fcSMahipal Challa if (!lzs_flag) { 57*f05845fcSMahipal Challa zip_ops->ccode = 0; /* Auto Huffman */ 58*f05845fcSMahipal Challa zip_ops->lzs_flag = 0; 59*f05845fcSMahipal Challa zip_ops->format = ZLIB_FORMAT; 60*f05845fcSMahipal Challa } else { 61*f05845fcSMahipal Challa zip_ops->ccode = 3; /* LZS Encoding */ 62*f05845fcSMahipal Challa zip_ops->lzs_flag = 1; 63*f05845fcSMahipal Challa zip_ops->format = LZS_FORMAT; 64*f05845fcSMahipal Challa } 65*f05845fcSMahipal Challa zip_ops->begin_file = 1; 66*f05845fcSMahipal Challa zip_ops->history_len = 0; 67*f05845fcSMahipal Challa zip_ops->end_file = 1; 68*f05845fcSMahipal Challa zip_ops->compcode = 0; 69*f05845fcSMahipal Challa zip_ops->csum = 1; /* Adler checksum desired */ 70*f05845fcSMahipal Challa } 71*f05845fcSMahipal Challa 72*f05845fcSMahipal Challa int zip_ctx_init(struct zip_kernel_ctx *zip_ctx, int lzs_flag) 73*f05845fcSMahipal Challa { 74*f05845fcSMahipal Challa struct zip_operation *comp_ctx = &zip_ctx->zip_comp; 75*f05845fcSMahipal Challa struct zip_operation *decomp_ctx = &zip_ctx->zip_decomp; 76*f05845fcSMahipal Challa 77*f05845fcSMahipal Challa zip_static_init_zip_ops(comp_ctx, lzs_flag); 78*f05845fcSMahipal Challa zip_static_init_zip_ops(decomp_ctx, lzs_flag); 79*f05845fcSMahipal Challa 80*f05845fcSMahipal Challa comp_ctx->input = zip_data_buf_alloc(MAX_INPUT_BUFFER_SIZE); 81*f05845fcSMahipal Challa if (!comp_ctx->input) 82*f05845fcSMahipal Challa return -ENOMEM; 83*f05845fcSMahipal Challa 84*f05845fcSMahipal Challa comp_ctx->output = zip_data_buf_alloc(MAX_OUTPUT_BUFFER_SIZE); 85*f05845fcSMahipal Challa if (!comp_ctx->output) 86*f05845fcSMahipal Challa goto err_comp_input; 87*f05845fcSMahipal Challa 88*f05845fcSMahipal Challa decomp_ctx->input = zip_data_buf_alloc(MAX_INPUT_BUFFER_SIZE); 89*f05845fcSMahipal Challa if (!decomp_ctx->input) 90*f05845fcSMahipal Challa goto err_comp_output; 91*f05845fcSMahipal Challa 92*f05845fcSMahipal Challa decomp_ctx->output = zip_data_buf_alloc(MAX_OUTPUT_BUFFER_SIZE); 93*f05845fcSMahipal Challa if (!decomp_ctx->output) 94*f05845fcSMahipal Challa goto err_decomp_input; 95*f05845fcSMahipal Challa 96*f05845fcSMahipal Challa return 0; 97*f05845fcSMahipal Challa 98*f05845fcSMahipal Challa err_decomp_input: 99*f05845fcSMahipal Challa zip_data_buf_free(decomp_ctx->input, MAX_INPUT_BUFFER_SIZE); 100*f05845fcSMahipal Challa 101*f05845fcSMahipal Challa err_comp_output: 102*f05845fcSMahipal Challa zip_data_buf_free(comp_ctx->output, MAX_OUTPUT_BUFFER_SIZE); 103*f05845fcSMahipal Challa 104*f05845fcSMahipal Challa err_comp_input: 105*f05845fcSMahipal Challa zip_data_buf_free(comp_ctx->input, MAX_INPUT_BUFFER_SIZE); 106*f05845fcSMahipal Challa 107*f05845fcSMahipal Challa return -ENOMEM; 108*f05845fcSMahipal Challa } 109*f05845fcSMahipal Challa 110*f05845fcSMahipal Challa void zip_ctx_exit(struct zip_kernel_ctx *zip_ctx) 111*f05845fcSMahipal Challa { 112*f05845fcSMahipal Challa struct zip_operation *comp_ctx = &zip_ctx->zip_comp; 113*f05845fcSMahipal Challa struct zip_operation *dec_ctx = &zip_ctx->zip_decomp; 114*f05845fcSMahipal Challa 115*f05845fcSMahipal Challa zip_data_buf_free(comp_ctx->input, MAX_INPUT_BUFFER_SIZE); 116*f05845fcSMahipal Challa zip_data_buf_free(comp_ctx->output, MAX_OUTPUT_BUFFER_SIZE); 117*f05845fcSMahipal Challa 118*f05845fcSMahipal Challa zip_data_buf_free(dec_ctx->input, MAX_INPUT_BUFFER_SIZE); 119*f05845fcSMahipal Challa zip_data_buf_free(dec_ctx->output, MAX_OUTPUT_BUFFER_SIZE); 120*f05845fcSMahipal Challa } 121*f05845fcSMahipal Challa 122*f05845fcSMahipal Challa int zip_compress(const u8 *src, unsigned int slen, 123*f05845fcSMahipal Challa u8 *dst, unsigned int *dlen, 124*f05845fcSMahipal Challa struct zip_kernel_ctx *zip_ctx) 125*f05845fcSMahipal Challa { 126*f05845fcSMahipal Challa struct zip_operation *zip_ops = NULL; 127*f05845fcSMahipal Challa struct zip_state zip_state; 128*f05845fcSMahipal Challa struct zip_device *zip = NULL; 129*f05845fcSMahipal Challa int ret; 130*f05845fcSMahipal Challa 131*f05845fcSMahipal Challa if (!zip_ctx || !src || !dst || !dlen) 132*f05845fcSMahipal Challa return -ENOMEM; 133*f05845fcSMahipal Challa 134*f05845fcSMahipal Challa zip = zip_get_device(zip_get_node_id()); 135*f05845fcSMahipal Challa if (!zip) 136*f05845fcSMahipal Challa return -ENODEV; 137*f05845fcSMahipal Challa 138*f05845fcSMahipal Challa memset(&zip_state, 0, sizeof(struct zip_state)); 139*f05845fcSMahipal Challa zip_ops = &zip_ctx->zip_comp; 140*f05845fcSMahipal Challa 141*f05845fcSMahipal Challa zip_ops->input_len = slen; 142*f05845fcSMahipal Challa zip_ops->output_len = *dlen; 143*f05845fcSMahipal Challa memcpy(zip_ops->input, src, slen); 144*f05845fcSMahipal Challa 145*f05845fcSMahipal Challa ret = zip_deflate(zip_ops, &zip_state, zip); 146*f05845fcSMahipal Challa 147*f05845fcSMahipal Challa if (!ret) { 148*f05845fcSMahipal Challa *dlen = zip_ops->output_len; 149*f05845fcSMahipal Challa memcpy(dst, zip_ops->output, *dlen); 150*f05845fcSMahipal Challa } 151*f05845fcSMahipal Challa 152*f05845fcSMahipal Challa return ret; 153*f05845fcSMahipal Challa } 154*f05845fcSMahipal Challa 155*f05845fcSMahipal Challa int zip_decompress(const u8 *src, unsigned int slen, 156*f05845fcSMahipal Challa u8 *dst, unsigned int *dlen, 157*f05845fcSMahipal Challa struct zip_kernel_ctx *zip_ctx) 158*f05845fcSMahipal Challa { 159*f05845fcSMahipal Challa struct zip_operation *zip_ops = NULL; 160*f05845fcSMahipal Challa struct zip_state zip_state; 161*f05845fcSMahipal Challa struct zip_device *zip = NULL; 162*f05845fcSMahipal Challa int ret; 163*f05845fcSMahipal Challa 164*f05845fcSMahipal Challa if (!zip_ctx || !src || !dst || !dlen) 165*f05845fcSMahipal Challa return -ENOMEM; 166*f05845fcSMahipal Challa 167*f05845fcSMahipal Challa zip = zip_get_device(zip_get_node_id()); 168*f05845fcSMahipal Challa if (!zip) 169*f05845fcSMahipal Challa return -ENODEV; 170*f05845fcSMahipal Challa 171*f05845fcSMahipal Challa memset(&zip_state, 0, sizeof(struct zip_state)); 172*f05845fcSMahipal Challa zip_ops = &zip_ctx->zip_decomp; 173*f05845fcSMahipal Challa memcpy(zip_ops->input, src, slen); 174*f05845fcSMahipal Challa 175*f05845fcSMahipal Challa /* Work around for a bug in zlib which needs an extra bytes sometimes */ 176*f05845fcSMahipal Challa if (zip_ops->ccode != 3) /* Not LZS Encoding */ 177*f05845fcSMahipal Challa zip_ops->input[slen++] = 0; 178*f05845fcSMahipal Challa 179*f05845fcSMahipal Challa zip_ops->input_len = slen; 180*f05845fcSMahipal Challa zip_ops->output_len = *dlen; 181*f05845fcSMahipal Challa 182*f05845fcSMahipal Challa ret = zip_inflate(zip_ops, &zip_state, zip); 183*f05845fcSMahipal Challa 184*f05845fcSMahipal Challa if (!ret) { 185*f05845fcSMahipal Challa *dlen = zip_ops->output_len; 186*f05845fcSMahipal Challa memcpy(dst, zip_ops->output, *dlen); 187*f05845fcSMahipal Challa } 188*f05845fcSMahipal Challa 189*f05845fcSMahipal Challa return ret; 190*f05845fcSMahipal Challa } 191*f05845fcSMahipal Challa 192*f05845fcSMahipal Challa /* Legacy Compress framework start */ 193*f05845fcSMahipal Challa int zip_alloc_comp_ctx_deflate(struct crypto_tfm *tfm) 194*f05845fcSMahipal Challa { 195*f05845fcSMahipal Challa int ret; 196*f05845fcSMahipal Challa struct zip_kernel_ctx *zip_ctx = crypto_tfm_ctx(tfm); 197*f05845fcSMahipal Challa 198*f05845fcSMahipal Challa ret = zip_ctx_init(zip_ctx, 0); 199*f05845fcSMahipal Challa 200*f05845fcSMahipal Challa return ret; 201*f05845fcSMahipal Challa } 202*f05845fcSMahipal Challa 203*f05845fcSMahipal Challa int zip_alloc_comp_ctx_lzs(struct crypto_tfm *tfm) 204*f05845fcSMahipal Challa { 205*f05845fcSMahipal Challa int ret; 206*f05845fcSMahipal Challa struct zip_kernel_ctx *zip_ctx = crypto_tfm_ctx(tfm); 207*f05845fcSMahipal Challa 208*f05845fcSMahipal Challa ret = zip_ctx_init(zip_ctx, 1); 209*f05845fcSMahipal Challa 210*f05845fcSMahipal Challa return ret; 211*f05845fcSMahipal Challa } 212*f05845fcSMahipal Challa 213*f05845fcSMahipal Challa void zip_free_comp_ctx(struct crypto_tfm *tfm) 214*f05845fcSMahipal Challa { 215*f05845fcSMahipal Challa struct zip_kernel_ctx *zip_ctx = crypto_tfm_ctx(tfm); 216*f05845fcSMahipal Challa 217*f05845fcSMahipal Challa zip_ctx_exit(zip_ctx); 218*f05845fcSMahipal Challa } 219*f05845fcSMahipal Challa 220*f05845fcSMahipal Challa int zip_comp_compress(struct crypto_tfm *tfm, 221*f05845fcSMahipal Challa const u8 *src, unsigned int slen, 222*f05845fcSMahipal Challa u8 *dst, unsigned int *dlen) 223*f05845fcSMahipal Challa { 224*f05845fcSMahipal Challa int ret; 225*f05845fcSMahipal Challa struct zip_kernel_ctx *zip_ctx = crypto_tfm_ctx(tfm); 226*f05845fcSMahipal Challa 227*f05845fcSMahipal Challa ret = zip_compress(src, slen, dst, dlen, zip_ctx); 228*f05845fcSMahipal Challa 229*f05845fcSMahipal Challa return ret; 230*f05845fcSMahipal Challa } 231*f05845fcSMahipal Challa 232*f05845fcSMahipal Challa int zip_comp_decompress(struct crypto_tfm *tfm, 233*f05845fcSMahipal Challa const u8 *src, unsigned int slen, 234*f05845fcSMahipal Challa u8 *dst, unsigned int *dlen) 235*f05845fcSMahipal Challa { 236*f05845fcSMahipal Challa int ret; 237*f05845fcSMahipal Challa struct zip_kernel_ctx *zip_ctx = crypto_tfm_ctx(tfm); 238*f05845fcSMahipal Challa 239*f05845fcSMahipal Challa ret = zip_decompress(src, slen, dst, dlen, zip_ctx); 240*f05845fcSMahipal Challa 241*f05845fcSMahipal Challa return ret; 242*f05845fcSMahipal Challa } /* Legacy compress framework end */ 243*f05845fcSMahipal Challa 244*f05845fcSMahipal Challa /* SCOMP framework start */ 245*f05845fcSMahipal Challa void *zip_alloc_scomp_ctx_deflate(struct crypto_scomp *tfm) 246*f05845fcSMahipal Challa { 247*f05845fcSMahipal Challa int ret; 248*f05845fcSMahipal Challa struct zip_kernel_ctx *zip_ctx; 249*f05845fcSMahipal Challa 250*f05845fcSMahipal Challa zip_ctx = kzalloc(sizeof(*zip_ctx), GFP_KERNEL); 251*f05845fcSMahipal Challa if (!zip_ctx) 252*f05845fcSMahipal Challa return ERR_PTR(-ENOMEM); 253*f05845fcSMahipal Challa 254*f05845fcSMahipal Challa ret = zip_ctx_init(zip_ctx, 0); 255*f05845fcSMahipal Challa 256*f05845fcSMahipal Challa if (ret) { 257*f05845fcSMahipal Challa kzfree(zip_ctx); 258*f05845fcSMahipal Challa return ERR_PTR(ret); 259*f05845fcSMahipal Challa } 260*f05845fcSMahipal Challa 261*f05845fcSMahipal Challa return zip_ctx; 262*f05845fcSMahipal Challa } 263*f05845fcSMahipal Challa 264*f05845fcSMahipal Challa void *zip_alloc_scomp_ctx_lzs(struct crypto_scomp *tfm) 265*f05845fcSMahipal Challa { 266*f05845fcSMahipal Challa int ret; 267*f05845fcSMahipal Challa struct zip_kernel_ctx *zip_ctx; 268*f05845fcSMahipal Challa 269*f05845fcSMahipal Challa zip_ctx = kzalloc(sizeof(*zip_ctx), GFP_KERNEL); 270*f05845fcSMahipal Challa if (!zip_ctx) 271*f05845fcSMahipal Challa return ERR_PTR(-ENOMEM); 272*f05845fcSMahipal Challa 273*f05845fcSMahipal Challa ret = zip_ctx_init(zip_ctx, 1); 274*f05845fcSMahipal Challa 275*f05845fcSMahipal Challa if (ret) { 276*f05845fcSMahipal Challa kzfree(zip_ctx); 277*f05845fcSMahipal Challa return ERR_PTR(ret); 278*f05845fcSMahipal Challa } 279*f05845fcSMahipal Challa 280*f05845fcSMahipal Challa return zip_ctx; 281*f05845fcSMahipal Challa } 282*f05845fcSMahipal Challa 283*f05845fcSMahipal Challa void zip_free_scomp_ctx(struct crypto_scomp *tfm, void *ctx) 284*f05845fcSMahipal Challa { 285*f05845fcSMahipal Challa struct zip_kernel_ctx *zip_ctx = ctx; 286*f05845fcSMahipal Challa 287*f05845fcSMahipal Challa zip_ctx_exit(zip_ctx); 288*f05845fcSMahipal Challa kzfree(zip_ctx); 289*f05845fcSMahipal Challa } 290*f05845fcSMahipal Challa 291*f05845fcSMahipal Challa int zip_scomp_compress(struct crypto_scomp *tfm, 292*f05845fcSMahipal Challa const u8 *src, unsigned int slen, 293*f05845fcSMahipal Challa u8 *dst, unsigned int *dlen, void *ctx) 294*f05845fcSMahipal Challa { 295*f05845fcSMahipal Challa int ret; 296*f05845fcSMahipal Challa struct zip_kernel_ctx *zip_ctx = ctx; 297*f05845fcSMahipal Challa 298*f05845fcSMahipal Challa ret = zip_compress(src, slen, dst, dlen, zip_ctx); 299*f05845fcSMahipal Challa 300*f05845fcSMahipal Challa return ret; 301*f05845fcSMahipal Challa } 302*f05845fcSMahipal Challa 303*f05845fcSMahipal Challa int zip_scomp_decompress(struct crypto_scomp *tfm, 304*f05845fcSMahipal Challa const u8 *src, unsigned int slen, 305*f05845fcSMahipal Challa u8 *dst, unsigned int *dlen, void *ctx) 306*f05845fcSMahipal Challa { 307*f05845fcSMahipal Challa int ret; 308*f05845fcSMahipal Challa struct zip_kernel_ctx *zip_ctx = ctx; 309*f05845fcSMahipal Challa 310*f05845fcSMahipal Challa ret = zip_decompress(src, slen, dst, dlen, zip_ctx); 311*f05845fcSMahipal Challa 312*f05845fcSMahipal Challa return ret; 313*f05845fcSMahipal Challa } /* SCOMP framework end */ 314