| /* |
| * This file is part of the Chelsio T6 Crypto driver for Linux. |
| * |
| * Copyright (c) 2003-2016 Chelsio Communications, Inc. All rights reserved. |
| * |
| * This software is available to you under a choice of one of two |
| * licenses. You may choose to be licensed under the terms of the GNU |
| * General Public License (GPL) Version 2, available from the file |
| * COPYING in the main directory of this source tree, or the |
| * OpenIB.org BSD license below: |
| * |
| * 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. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
| * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS |
| * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN |
| * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
| * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| * SOFTWARE. |
| * |
| */ |
| |
| #ifndef __CHCR_CRYPTO_H__ |
| #define __CHCR_CRYPTO_H__ |
| |
| #define GHASH_BLOCK_SIZE 16 |
| #define GHASH_DIGEST_SIZE 16 |
| |
| #define CCM_B0_SIZE 16 |
| #define CCM_AAD_FIELD_SIZE 2 |
| #define T6_MAX_AAD_SIZE 511 |
| |
| |
| /* Define following if h/w is not dropping the AAD and IV data before |
| * giving the processed data |
| */ |
| |
| #define CHCR_CRA_PRIORITY 500 |
| #define CHCR_AEAD_PRIORITY 6000 |
| #define CHCR_AES_MAX_KEY_LEN (2 * (AES_MAX_KEY_SIZE)) /* consider xts */ |
| #define CHCR_MAX_CRYPTO_IV_LEN 16 /* AES IV len */ |
| |
| #define CHCR_MAX_AUTHENC_AES_KEY_LEN 32 /* max aes key length*/ |
| #define CHCR_MAX_AUTHENC_SHA_KEY_LEN 128 /* max sha key length*/ |
| |
| #define CHCR_GIVENCRYPT_OP 2 |
| /* CPL/SCMD parameters */ |
| |
| #define CHCR_ENCRYPT_OP 0 |
| #define CHCR_DECRYPT_OP 1 |
| |
| #define CHCR_SCMD_SEQ_NO_CTRL_32BIT 1 |
| #define CHCR_SCMD_SEQ_NO_CTRL_48BIT 2 |
| #define CHCR_SCMD_SEQ_NO_CTRL_64BIT 3 |
| |
| #define CHCR_SCMD_PROTO_VERSION_GENERIC 4 |
| |
| #define CHCR_SCMD_AUTH_CTRL_AUTH_CIPHER 0 |
| #define CHCR_SCMD_AUTH_CTRL_CIPHER_AUTH 1 |
| |
| #define CHCR_SCMD_CIPHER_MODE_NOP 0 |
| #define CHCR_SCMD_CIPHER_MODE_AES_CBC 1 |
| #define CHCR_SCMD_CIPHER_MODE_AES_GCM 2 |
| #define CHCR_SCMD_CIPHER_MODE_AES_CTR 3 |
| #define CHCR_SCMD_CIPHER_MODE_GENERIC_AES 4 |
| #define CHCR_SCMD_CIPHER_MODE_AES_XTS 6 |
| #define CHCR_SCMD_CIPHER_MODE_AES_CCM 7 |
| |
| #define CHCR_SCMD_AUTH_MODE_NOP 0 |
| #define CHCR_SCMD_AUTH_MODE_SHA1 1 |
| #define CHCR_SCMD_AUTH_MODE_SHA224 2 |
| #define CHCR_SCMD_AUTH_MODE_SHA256 3 |
| #define CHCR_SCMD_AUTH_MODE_GHASH 4 |
| #define CHCR_SCMD_AUTH_MODE_SHA512_224 5 |
| #define CHCR_SCMD_AUTH_MODE_SHA512_256 6 |
| #define CHCR_SCMD_AUTH_MODE_SHA512_384 7 |
| #define CHCR_SCMD_AUTH_MODE_SHA512_512 8 |
| #define CHCR_SCMD_AUTH_MODE_CBCMAC 9 |
| #define CHCR_SCMD_AUTH_MODE_CMAC 10 |
| |
| #define CHCR_SCMD_HMAC_CTRL_NOP 0 |
| #define CHCR_SCMD_HMAC_CTRL_NO_TRUNC 1 |
| #define CHCR_SCMD_HMAC_CTRL_TRUNC_RFC4366 2 |
| #define CHCR_SCMD_HMAC_CTRL_IPSEC_96BIT 3 |
| #define CHCR_SCMD_HMAC_CTRL_PL1 4 |
| #define CHCR_SCMD_HMAC_CTRL_PL2 5 |
| #define CHCR_SCMD_HMAC_CTRL_PL3 6 |
| #define CHCR_SCMD_HMAC_CTRL_DIV2 7 |
| #define VERIFY_HW 0 |
| #define VERIFY_SW 1 |
| |
| #define CHCR_SCMD_IVGEN_CTRL_HW 0 |
| #define CHCR_SCMD_IVGEN_CTRL_SW 1 |
| /* This are not really mac key size. They are intermediate values |
| * of sha engine and its size |
| */ |
| #define CHCR_KEYCTX_MAC_KEY_SIZE_128 0 |
| #define CHCR_KEYCTX_MAC_KEY_SIZE_160 1 |
| #define CHCR_KEYCTX_MAC_KEY_SIZE_192 2 |
| #define CHCR_KEYCTX_MAC_KEY_SIZE_256 3 |
| #define CHCR_KEYCTX_MAC_KEY_SIZE_512 4 |
| #define CHCR_KEYCTX_CIPHER_KEY_SIZE_128 0 |
| #define CHCR_KEYCTX_CIPHER_KEY_SIZE_192 1 |
| #define CHCR_KEYCTX_CIPHER_KEY_SIZE_256 2 |
| #define CHCR_KEYCTX_NO_KEY 15 |
| |
| #define CHCR_CPL_FW4_PLD_IV_OFFSET (5 * 64) /* bytes. flt #5 and #6 */ |
| #define CHCR_CPL_FW4_PLD_HASH_RESULT_OFFSET (7 * 64) /* bytes. flt #7 */ |
| #define CHCR_CPL_FW4_PLD_DATA_SIZE (4 * 64) /* bytes. flt #4 to #7 */ |
| |
| #define KEY_CONTEXT_HDR_SALT_AND_PAD 16 |
| #define flits_to_bytes(x) (x * 8) |
| |
| #define IV_NOP 0 |
| #define IV_IMMEDIATE 1 |
| #define IV_DSGL 2 |
| |
| #define AEAD_H_SIZE 16 |
| |
| #define CRYPTO_ALG_SUB_TYPE_MASK 0x0f000000 |
| #define CRYPTO_ALG_SUB_TYPE_HASH_HMAC 0x01000000 |
| #define CRYPTO_ALG_SUB_TYPE_AEAD_RFC4106 0x02000000 |
| #define CRYPTO_ALG_SUB_TYPE_AEAD_GCM 0x03000000 |
| #define CRYPTO_ALG_SUB_TYPE_AEAD_AUTHENC 0x04000000 |
| #define CRYPTO_ALG_SUB_TYPE_AEAD_CCM 0x05000000 |
| #define CRYPTO_ALG_SUB_TYPE_AEAD_RFC4309 0x06000000 |
| #define CRYPTO_ALG_SUB_TYPE_AEAD_NULL 0x07000000 |
| #define CRYPTO_ALG_SUB_TYPE_CTR 0x08000000 |
| #define CRYPTO_ALG_SUB_TYPE_CTR_RFC3686 0x09000000 |
| #define CRYPTO_ALG_SUB_TYPE_XTS 0x0a000000 |
| #define CRYPTO_ALG_SUB_TYPE_CBC 0x0b000000 |
| #define CRYPTO_ALG_TYPE_HMAC (CRYPTO_ALG_TYPE_AHASH |\ |
| CRYPTO_ALG_SUB_TYPE_HASH_HMAC) |
| |
| #define MAX_SCRATCH_PAD_SIZE 32 |
| |
| #define CHCR_HASH_MAX_BLOCK_SIZE_64 64 |
| #define CHCR_HASH_MAX_BLOCK_SIZE_128 128 |
| #define CHCR_SG_SIZE 2048 |
| |
| /* Aligned to 128 bit boundary */ |
| |
| struct ablk_ctx { |
| struct crypto_skcipher *sw_cipher; |
| struct crypto_cipher *aes_generic; |
| __be32 key_ctx_hdr; |
| unsigned int enckey_len; |
| unsigned char ciph_mode; |
| u8 key[CHCR_AES_MAX_KEY_LEN]; |
| u8 nonce[4]; |
| u8 rrkey[AES_MAX_KEY_SIZE]; |
| }; |
| struct chcr_aead_reqctx { |
| struct sk_buff *skb; |
| struct scatterlist *dst; |
| struct scatterlist *newdstsg; |
| struct scatterlist srcffwd[2]; |
| struct scatterlist dstffwd[2]; |
| short int dst_nents; |
| u16 verify; |
| u8 iv[CHCR_MAX_CRYPTO_IV_LEN]; |
| unsigned char scratch_pad[MAX_SCRATCH_PAD_SIZE]; |
| }; |
| |
| struct chcr_gcm_ctx { |
| u8 ghash_h[AEAD_H_SIZE]; |
| }; |
| |
| struct chcr_authenc_ctx { |
| u8 dec_rrkey[AES_MAX_KEY_SIZE]; |
| u8 h_iopad[2 * CHCR_HASH_MAX_DIGEST_SIZE]; |
| unsigned char auth_mode; |
| }; |
| |
| struct __aead_ctx { |
| struct chcr_gcm_ctx gcm[0]; |
| struct chcr_authenc_ctx authenc[0]; |
| }; |
| |
| |
| |
| struct chcr_aead_ctx { |
| __be32 key_ctx_hdr; |
| unsigned int enckey_len; |
| struct crypto_skcipher *null; |
| struct crypto_aead *sw_cipher; |
| u8 salt[MAX_SALT]; |
| u8 key[CHCR_AES_MAX_KEY_LEN]; |
| u16 hmac_ctrl; |
| u16 mayverify; |
| struct __aead_ctx ctx[0]; |
| }; |
| |
| |
| |
| struct hmac_ctx { |
| struct crypto_shash *base_hash; |
| u8 ipad[CHCR_HASH_MAX_BLOCK_SIZE_128]; |
| u8 opad[CHCR_HASH_MAX_BLOCK_SIZE_128]; |
| }; |
| |
| struct __crypto_ctx { |
| struct hmac_ctx hmacctx[0]; |
| struct ablk_ctx ablkctx[0]; |
| struct chcr_aead_ctx aeadctx[0]; |
| }; |
| |
| struct chcr_context { |
| struct chcr_dev *dev; |
| unsigned char tx_qidx; |
| unsigned char rx_qidx; |
| unsigned char tx_chan_id; |
| unsigned char pci_chan_id; |
| struct __crypto_ctx crypto_ctx[0]; |
| }; |
| |
| struct chcr_ahash_req_ctx { |
| u32 result; |
| u8 bfr1[CHCR_HASH_MAX_BLOCK_SIZE_128]; |
| u8 bfr2[CHCR_HASH_MAX_BLOCK_SIZE_128]; |
| u8 *reqbfr; |
| u8 *skbfr; |
| u8 reqlen; |
| /* DMA the partial hash in it */ |
| u8 partial_hash[CHCR_HASH_MAX_DIGEST_SIZE]; |
| u64 data_len; /* Data len till time */ |
| /* SKB which is being sent to the hardware for processing */ |
| struct sk_buff *skb; |
| }; |
| |
| struct chcr_blkcipher_req_ctx { |
| struct sk_buff *skb; |
| struct scatterlist srcffwd[2]; |
| struct scatterlist dstffwd[2]; |
| struct scatterlist *dstsg; |
| struct scatterlist *dst; |
| struct scatterlist *newdstsg; |
| unsigned int processed; |
| unsigned int op; |
| short int dst_nents; |
| u8 iv[CHCR_MAX_CRYPTO_IV_LEN]; |
| }; |
| |
| struct chcr_alg_template { |
| u32 type; |
| u32 is_registered; |
| union { |
| struct crypto_alg crypto; |
| struct ahash_alg hash; |
| struct aead_alg aead; |
| } alg; |
| }; |
| |
| struct chcr_req_ctx { |
| union { |
| struct ahash_request *ahash_req; |
| struct aead_request *aead_req; |
| struct ablkcipher_request *ablk_req; |
| } req; |
| union { |
| struct chcr_ahash_req_ctx *ahash_ctx; |
| struct chcr_aead_reqctx *reqctx; |
| struct chcr_blkcipher_req_ctx *ablk_ctx; |
| } ctx; |
| }; |
| |
| struct sge_opaque_hdr { |
| void *dev; |
| dma_addr_t addr[MAX_SKB_FRAGS + 1]; |
| }; |
| |
| typedef struct sk_buff *(*create_wr_t)(struct aead_request *req, |
| unsigned short qid, |
| int size, |
| unsigned short op_type); |
| |
| static int chcr_aead_op(struct aead_request *req_base, |
| unsigned short op_type, |
| int size, |
| create_wr_t create_wr_fn); |
| static inline int get_aead_subtype(struct crypto_aead *aead); |
| static int is_newsg(struct scatterlist *sgl, unsigned int *newents); |
| static struct scatterlist *alloc_new_sg(struct scatterlist *sgl, |
| unsigned int nents); |
| static inline void free_new_sg(struct scatterlist *sgl); |
| static int chcr_handle_cipher_resp(struct ablkcipher_request *req, |
| unsigned char *input, int err); |
| #endif /* __CHCR_CRYPTO_H__ */ |