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crypto: chcr - Add AEAD algos.

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Add support for following AEAD algos.
 GCM,CCM,RFC4106,RFC4309,authenc(hmac(shaXXX),cbc(aes)).

Reviewed-by: Stephan Mueller <smueller@chronox.de>
Signed-off-by: Harsh Jain <harsh@chelsio.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Harsh Jain
2016-11-29 19:00:43 +05:30
committed by Herbert Xu
parent 5c86a8ff2e
commit 2debd3325e
6 changed files with 1558 additions and 41 deletions
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90
drivers/crypto/chelsio/chcr_crypto.h
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@@ -36,6 +36,14 @@
#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 T5_MAX_AAD_SIZE 512
/* Define following if h/w is not dropping the AAD and IV data before
* giving the processed data
*/
@@ -63,22 +71,36 @@
#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_GENERIC_AES 4
#define CHCR_SCMD_CIPHER_MODE_AES_XTS 6
#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
@@ -106,12 +128,20 @@
#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_TYPE_HMAC (CRYPTO_ALG_TYPE_AHASH |\
CRYPTO_ALG_SUB_TYPE_HASH_HMAC)
#define MAX_SALT 4
#define MAX_SCRATCH_PAD_SIZE 32
#define CHCR_HASH_MAX_BLOCK_SIZE_64 64
@@ -126,6 +156,42 @@ struct ablk_ctx {
unsigned char ciph_mode;
u8 rrkey[AES_MAX_KEY_SIZE];
};
struct chcr_aead_reqctx {
struct sk_buff *skb;
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;
u8 salt[MAX_SALT];
u8 key[CHCR_AES_MAX_KEY_LEN];
u16 hmac_ctrl;
u16 mayverify;
struct __aead_ctx ctx[0];
};
struct hmac_ctx {
@@ -137,6 +203,7 @@ struct hmac_ctx {
struct __crypto_ctx {
struct hmac_ctx hmacctx[0];
struct ablk_ctx ablkctx[0];
struct chcr_aead_ctx aeadctx[0];
};
struct chcr_context {
@@ -171,16 +238,19 @@ struct chcr_alg_template {
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;
};
@@ -190,9 +260,15 @@ struct sge_opaque_hdr {
dma_addr_t addr[MAX_SKB_FRAGS + 1];
};
typedef struct sk_buff *(*create_wr_t)(struct crypto_async_request *req,
struct chcr_context *ctx,
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);
#endif /* __CHCR_CRYPTO_H__ */