diff options
Diffstat (limited to 'drivers/crypto/cavium/nitrox/nitrox_req.h')
| -rw-r--r-- | drivers/crypto/cavium/nitrox/nitrox_req.h | 239 |
1 files changed, 201 insertions, 38 deletions
diff --git a/drivers/crypto/cavium/nitrox/nitrox_req.h b/drivers/crypto/cavium/nitrox/nitrox_req.h index d45ff91c19a9..76c0f0be7233 100644 --- a/drivers/crypto/cavium/nitrox/nitrox_req.h +++ b/drivers/crypto/cavium/nitrox/nitrox_req.h @@ -8,6 +8,7 @@ #include "nitrox_dev.h" #define PENDING_SIG 0xFFFFFFFFFFFFFFFFUL +#define PRIO 4001 /** * struct gphdr - General purpose Header @@ -106,6 +107,18 @@ enum flexi_cipher { CIPHER_INVALID }; +enum flexi_auth { + AUTH_NULL = 0, + AUTH_MD5, + AUTH_SHA1, + AUTH_SHA2_SHA224, + AUTH_SHA2_SHA256, + AUTH_SHA2_SHA384, + AUTH_SHA2_SHA512, + AUTH_GMAC, + AUTH_INVALID +}; + /** * struct crypto_keys - Crypto keys * @key: Encryption key or KEY1 for AES-XTS @@ -132,6 +145,32 @@ struct auth_keys { u8 opad[64]; }; +union fc_ctx_flags { + __be64 f; + struct { +#if defined(__BIG_ENDIAN_BITFIELD) + u64 cipher_type : 4; + u64 reserved_59 : 1; + u64 aes_keylen : 2; + u64 iv_source : 1; + u64 hash_type : 4; + u64 reserved_49_51 : 3; + u64 auth_input_type: 1; + u64 mac_len : 8; + u64 reserved_0_39 : 40; +#else + u64 reserved_0_39 : 40; + u64 mac_len : 8; + u64 auth_input_type: 1; + u64 reserved_49_51 : 3; + u64 hash_type : 4; + u64 iv_source : 1; + u64 aes_keylen : 2; + u64 reserved_59 : 1; + u64 cipher_type : 4; +#endif + } w0; +}; /** * struct flexi_crypto_context - Crypto context * @cipher_type: Encryption cipher type @@ -146,33 +185,7 @@ struct auth_keys { * @auth: Authentication keys */ struct flexi_crypto_context { - union { - __be64 flags; - struct { -#if defined(__BIG_ENDIAN_BITFIELD) - u64 cipher_type : 4; - u64 reserved_59 : 1; - u64 aes_keylen : 2; - u64 iv_source : 1; - u64 hash_type : 4; - u64 reserved_49_51 : 3; - u64 auth_input_type: 1; - u64 mac_len : 8; - u64 reserved_0_39 : 40; -#else - u64 reserved_0_39 : 40; - u64 mac_len : 8; - u64 auth_input_type: 1; - u64 reserved_49_51 : 3; - u64 hash_type : 4; - u64 iv_source : 1; - u64 aes_keylen : 2; - u64 reserved_59 : 1; - u64 cipher_type : 4; -#endif - } w0; - }; - + union fc_ctx_flags flags; struct crypto_keys crypto; struct auth_keys auth; }; @@ -194,8 +207,6 @@ struct nitrox_crypto_ctx { struct nitrox_kcrypt_request { struct se_crypto_request creq; - struct nitrox_crypto_ctx *nctx; - struct skcipher_request *skreq; u8 *src; u8 *dst; }; @@ -400,7 +411,7 @@ struct resp_hdr { u64 *completion; }; -typedef void (*completion_t)(struct skcipher_request *skreq, int err); +typedef void (*completion_t)(void *arg, int err); /** * struct nitrox_softreq - Represents the NIROX Request. @@ -435,9 +446,30 @@ struct nitrox_softreq { unsigned long tstamp; completion_t callback; - struct skcipher_request *skreq; + void *cb_arg; }; +static inline int flexi_aes_keylen(int keylen) +{ + int aes_keylen; + + switch (keylen) { + case AES_KEYSIZE_128: + aes_keylen = 1; + break; + case AES_KEYSIZE_192: + aes_keylen = 2; + break; + case AES_KEYSIZE_256: + aes_keylen = 3; + break; + default: + aes_keylen = -EINVAL; + break; + } + return aes_keylen; +} + static inline void *alloc_req_buf(int nents, int extralen, gfp_t gfp) { size_t size; @@ -448,6 +480,14 @@ static inline void *alloc_req_buf(int nents, int extralen, gfp_t gfp) return kzalloc(size, gfp); } +/** + * create_single_sg - Point SG entry to the data + * @sg: Destination SG list + * @buf: Data + * @buflen: Data length + * + * Returns next free entry in the destination SG list + **/ static inline struct scatterlist *create_single_sg(struct scatterlist *sg, void *buf, int buflen) { @@ -456,18 +496,33 @@ static inline struct scatterlist *create_single_sg(struct scatterlist *sg, return sg; } +/** + * create_multi_sg - Create multiple sg entries with buflen data length from + * source sglist + * @to_sg: Destination SG list + * @from_sg: Source SG list + * @buflen: Data length + * + * Returns next free entry in the destination SG list + **/ static inline struct scatterlist *create_multi_sg(struct scatterlist *to_sg, - struct scatterlist *from_sg) + struct scatterlist *from_sg, + int buflen) { - struct scatterlist *sg; - int i; + struct scatterlist *sg = to_sg; + unsigned int sglen; + + for (; buflen; buflen -= sglen) { + sglen = from_sg->length; + if (sglen > buflen) + sglen = buflen; - for_each_sg(from_sg, sg, sg_nents(from_sg), i) { - sg_set_buf(to_sg, sg_virt(sg), sg->length); - to_sg++; + sg_set_buf(sg, sg_virt(from_sg), sglen); + from_sg = sg_next(from_sg); + sg++; } - return to_sg; + return sg; } static inline void set_orh_value(u64 *orh) @@ -480,4 +535,112 @@ static inline void set_comp_value(u64 *comp) WRITE_ONCE(*comp, PENDING_SIG); } +static inline int alloc_src_req_buf(struct nitrox_kcrypt_request *nkreq, + int nents, int ivsize) +{ + struct se_crypto_request *creq = &nkreq->creq; + + nkreq->src = alloc_req_buf(nents, ivsize, creq->gfp); + if (!nkreq->src) + return -ENOMEM; + + return 0; +} + +static inline void nitrox_creq_copy_iv(char *dst, char *src, int size) +{ + memcpy(dst, src, size); +} + +static inline struct scatterlist *nitrox_creq_src_sg(char *iv, int ivsize) +{ + return (struct scatterlist *)(iv + ivsize); +} + +static inline void nitrox_creq_set_src_sg(struct nitrox_kcrypt_request *nkreq, + int nents, int ivsize, + struct scatterlist *src, int buflen) +{ + char *iv = nkreq->src; + struct scatterlist *sg; + struct se_crypto_request *creq = &nkreq->creq; + + creq->src = nitrox_creq_src_sg(iv, ivsize); + sg = creq->src; + sg_init_table(sg, nents); + + /* Input format: + * +----+----------------+ + * | IV | SRC sg entries | + * +----+----------------+ + */ + + /* IV */ + sg = create_single_sg(sg, iv, ivsize); + /* SRC entries */ + create_multi_sg(sg, src, buflen); +} + +static inline int alloc_dst_req_buf(struct nitrox_kcrypt_request *nkreq, + int nents) +{ + int extralen = ORH_HLEN + COMP_HLEN; + struct se_crypto_request *creq = &nkreq->creq; + + nkreq->dst = alloc_req_buf(nents, extralen, creq->gfp); + if (!nkreq->dst) + return -ENOMEM; + + return 0; +} + +static inline void nitrox_creq_set_orh(struct nitrox_kcrypt_request *nkreq) +{ + struct se_crypto_request *creq = &nkreq->creq; + + creq->orh = (u64 *)(nkreq->dst); + set_orh_value(creq->orh); +} + +static inline void nitrox_creq_set_comp(struct nitrox_kcrypt_request *nkreq) +{ + struct se_crypto_request *creq = &nkreq->creq; + + creq->comp = (u64 *)(nkreq->dst + ORH_HLEN); + set_comp_value(creq->comp); +} + +static inline struct scatterlist *nitrox_creq_dst_sg(char *dst) +{ + return (struct scatterlist *)(dst + ORH_HLEN + COMP_HLEN); +} + +static inline void nitrox_creq_set_dst_sg(struct nitrox_kcrypt_request *nkreq, + int nents, int ivsize, + struct scatterlist *dst, int buflen) +{ + struct se_crypto_request *creq = &nkreq->creq; + struct scatterlist *sg; + char *iv = nkreq->src; + + creq->dst = nitrox_creq_dst_sg(nkreq->dst); + sg = creq->dst; + sg_init_table(sg, nents); + + /* Output format: + * +-----+----+----------------+-----------------+ + * | ORH | IV | DST sg entries | COMPLETION Bytes| + * +-----+----+----------------+-----------------+ + */ + + /* ORH */ + sg = create_single_sg(sg, creq->orh, ORH_HLEN); + /* IV */ + sg = create_single_sg(sg, iv, ivsize); + /* DST entries */ + sg = create_multi_sg(sg, dst, buflen); + /* COMPLETION Bytes */ + create_single_sg(sg, creq->comp, COMP_HLEN); +} + #endif /* __NITROX_REQ_H */ |