nf_nat_proto_udplite.rar_SOC

/** * AMCC SoC PPC4xx Crypto Driver * * Copyright (c) 2008 Applied Micro Circuits Corporation. * All rights reserved. James Hsiao <[email protected]> * * 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. * * 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. * * This file implements the Linux crypto algorithms. */ #include <linux/kernel.h> #include <linux/interrupt.h> #include <linux/spinlock_types.h> #include <linux/scatterlist.h> #include <linux/crypto.h> #include <linux/hash.h> #include <crypto/internal/hash.h> #include <linux/dma-mapping.h> #include <crypto/algapi.h> #include <crypto/aes.h> #include <crypto/sha.h> #include "crypto4xx_reg_def.h" #include "crypto4xx_sa.h" #include "crypto4xx_core.h" static void set_dynamic_sa_command_0(struct dynamic_sa_ctl *sa, u32 save_h, u32 save_iv, u32 ld_h, u32 ld_iv, u32 hdr_proc, u32 h, u32 c, u32 pad_type, u32 op_grp, u32 op, u32 dir) { sa->sa_command_0.w = 0; sa->sa_command_0.bf.save_hash_state = save_h; sa->sa_command_0.bf.save_iv = save_iv; sa->sa_command_0.bf.load_hash_state = ld_h; sa->sa_command_0.bf.load_iv = ld_iv; sa->sa_command_0.bf.hdr_proc = hdr_proc; sa->sa_command_0.bf.hash_alg = h; sa->sa_command_0.bf.cipher_alg = c; sa->sa_command_0.bf.pad_type = pad_type & 3; sa->sa_command_0.bf.extend_pad = pad_type >> 2; sa->sa_command_0.bf.op_group = op_grp; sa->sa_command_0.bf.opcode = op; sa->sa_command_0.bf.dir = dir; } static void set_dynamic_sa_command_1(struct dynamic_sa_ctl *sa, u32 cm, u32 hmac_mc, u32 cfb, u32 esn, u32 sn_mask, u32 mute, u32 cp_pad, u32 cp_pay, u32 cp_hdr) { sa->sa_command_1.w = 0; sa->sa_command_1.bf.crypto_mode31 = (cm & 4) >> 2; sa->sa_command_1.bf.crypto_mode9_8 = cm & 3; sa->sa_command_1.bf.feedback_mode = cfb, sa->sa_command_1.bf.sa_rev = 1; sa->sa_command_1.bf.extended_seq_num = esn; sa->sa_command_1.bf.seq_num_mask = sn_mask; sa->sa_command_1.bf.mutable_bit_proc = mute; sa->sa_command_1.bf.copy_pad = cp_pad; sa->sa_command_1.bf.copy_payload = cp_pay; sa->sa_command_1.bf.copy_hdr = cp_hdr; } int crypto4xx_encrypt(struct ablkcipher_request *req) { struct crypto4xx_ctx *ctx = crypto_tfm_ctx(req->base.tfm); ctx->direction = DIR_OUTBOUND; ctx->hash_final = 0; ctx->is_hash = 0; ctx->pd_ctl = 0x1; return crypto4xx_build_pd(&req->base, ctx, req->src, req->dst, req->nbytes, req->info, get_dynamic_sa_iv_size(ctx)); } int crypto4xx_decrypt(struct ablkcipher_request *req) { struct crypto4xx_ctx *ctx = crypto_tfm_ctx(req->base.tfm); ctx->direction = DIR_INBOUND; ctx->hash_final = 0; ctx->is_hash = 0; ctx->pd_ctl = 1; return crypto4xx_build_pd(&req->base, ctx, req->src, req->dst, req->nbytes, req->info, get_dynamic_sa_iv_size(ctx)); } /** * AES Functions */ static int crypto4xx_setkey_aes(struct crypto_ablkcipher *cipher, const u8 *key, unsigned int keylen, unsigned char cm, u8 fb) { struct crypto_tfm *tfm = crypto_ablkcipher_tfm(cipher); struct crypto4xx_ctx *ctx = crypto_tfm_ctx(tfm); struct dynamic_sa_ctl *sa; int rc; if (keylen != AES_KEYSIZE_256 && keylen != AES_KEYSIZE_192 && keylen != AES_KEYSIZE_128) { crypto_ablkcipher_set_flags(cipher, CRYPTO_TFM_RES_BAD_KEY_LEN); return -EINVAL; } /* Create SA */ if (ctx->sa_in_dma_addr || ctx->sa_out_dma_addr) crypto4xx_free_sa(ctx); rc = crypto4xx_alloc_sa(ctx, SA_AES128_LEN + (keylen-16) / 4); if (rc) return rc; if (ctx->state_record_dma_addr == 0) { rc = crypto4xx_alloc_state_record(ctx); if (rc) { crypto4xx_free_sa(ctx); return rc; } } /* Setup SA */ sa = (struct dynamic_sa_ctl *) ctx->sa_in; ctx->hash_final = 0; set_dynamic_sa_command_0(sa, SA_NOT_SAVE_HASH, SA_NOT_SAVE_IV, SA_LOAD_HASH_FROM_SA, SA_LOAD_IV_FROM_STATE, SA_NO_HEADER_PROC, SA_HASH_ALG_NULL, SA_CIPHER_ALG_AES, SA_PAD_TYPE_ZERO, SA_OP_GROUP_BASIC, SA_OPCODE_DECRYPT, DIR_INBOUND); set_dynamic_sa_command_1(sa, cm, SA_HASH_MODE_HASH, fb, SA_EXTENDED_SN_OFF, SA_SEQ_MASK_OFF, SA_MC_ENABLE, SA_NOT_COPY_PAD, SA_NOT_COPY_PAYLOAD, SA_NOT_COPY_HDR); crypto4xx_memcpy_le(ctx->sa_in + get_dynamic_sa_offset_key_field(ctx), key, keylen); sa->sa_contents = SA_AES_CONTENTS | (keylen << 2); sa->sa_command_1.bf.key_len = keylen >> 3; ctx->is_hash = 0; ctx->direction = DIR_INBOUND; memcpy(ctx->sa_in + get_dynamic_sa_offset_state_ptr_field(ctx), (void *)&ctx->state_record_dma_addr, 4); ctx->offset_to_sr_ptr = get_dynamic_sa_offset_state_ptr_field(ctx); memcpy(ctx->sa_out, ctx->sa_in, ctx->sa_len * 4); sa = (struct dynamic_sa_ctl *) ctx->sa_out; sa->sa_command_0.bf.dir = DIR_OUTBOUND; return 0; } int crypto4xx_setkey_aes_cbc(struct crypto_ablkcipher *cipher, const u8 *key, unsigned int keylen) { return crypto4xx_setkey_aes(cipher, key, keylen, CRYPTO_MODE_CBC, CRYPTO_FEEDBACK_MODE_NO_FB); } /** * HASH SHA1 Functions */ static int crypto4xx_hash_alg_init(struct crypto_tfm *tfm, unsigned int sa_len, unsigned char ha, unsigned char hm) { struct crypto_alg *alg = tfm->__crt_alg; struct crypto4xx_alg *my_alg = crypto_alg_to_crypto4xx_alg(alg); struct crypto4xx_ctx *ctx = crypto_tfm_ctx(tfm); struct dynamic_sa_ctl *sa; struct dynamic_sa_hash160 *sa_in; int rc; ctx->dev = my_alg->dev; ctx->is_hash = 1; ctx->hash_final = 0; /* Create SA */ if (ctx->sa_in_dma_addr || ctx->sa_out_dma_addr) crypto4xx_free_sa(ctx); rc = crypto4xx_alloc_sa(ctx, sa_len); if (rc) return rc; if (ctx->state_record_dma_addr == 0) { crypto4xx_alloc_state_record(ctx); if (!ctx->state_record_dma_addr) { crypto4xx_free_sa(ctx); return -ENOMEM; } } crypto_ahash_set_reqsize(__crypto_ahash_cast(tfm), sizeof(struct crypto4xx_ctx)); sa = (struct dynamic_sa_ctl *) ctx->sa_in; set_dynamic_sa_command_0(sa, SA_SAVE_HASH, SA_NOT_SAVE_IV, SA_NOT_LOAD_HASH, SA_LOAD_IV_FROM_SA, SA_NO_HEADER_PROC, ha, SA_CIPHER_ALG_NULL, SA_PAD_TYPE_ZERO, SA_OP_GROUP_BASIC, SA_OPCODE_HASH, DIR_INBOUND); set_dynamic_sa_command_1(sa, 0, SA_HASH_MODE_HASH, CRYPTO_FEEDBACK_MODE_NO_FB, SA_EXTENDED_SN_OFF, SA_SEQ_MASK_OFF, SA_MC_ENABLE, SA_NOT_COPY_PAD, SA_NOT_COPY_PAYLOAD, SA_NOT_COPY_HDR); ctx->direction = DIR_INBOUND; sa->sa_contents = SA_HASH160_CONTENTS; sa_in = (struct dynamic_sa_hash160 *) ctx->sa_in; /* Need to zero hash digest in SA */ memset(sa_in->inner_digest, 0, sizeof(sa_in->inner_digest)); memset(sa_in->outer_digest, 0, sizeof(sa_in->outer_digest)); sa_in->state_ptr = ctx->state_record_dma_addr; ctx->offset_to_sr_ptr = get_dynamic_sa_offset_state_ptr_field(ctx); return 0; } int crypto4xx_hash_init(struct ahash_request *req) { struct crypto4xx_ctx *ctx = crypto_tfm_ctx(req->base.tfm); int ds; struct dynamic_sa_ctl *sa; sa = (struct dynamic_sa_ctl *) ctx->sa_in; ds = crypto_ahash_digestsize( __crypto_ahash_cast(req->base.tfm)); sa->sa_command_0.bf.digest_len = ds >> 2; sa->sa_command_0.bf.load_hash_state = SA_LOAD_HASH_FROM_SA; ctx->is_hash = 1; ctx->direction = DIR_INBOUND; return 0; } int crypto4xx_hash_update(struct ahash_request *req) { struct crypto4xx_ctx *ctx = crypto_tfm_ctx(req->base.tfm); ctx->is_hash = 1; ctx->hash_final = 0; ctx->pd_ctl = 0x11; ctx->direction = DIR_INBOUND; return crypto4xx_build_pd(&req->base, ctx, req->src, (struct scatterlist *) req->result, req->nbytes, NULL, 0); } int crypto4xx_hash_final(struct ahash_request *req) { return 0; } int crypto4xx_hash_digest(struct ahash_request *req) { struct crypt