diff options
| -rw-r--r-- | drivers/crypto/hisilicon/sec2/sec.h | 2 | ||||
| -rw-r--r-- | drivers/crypto/hisilicon/sec2/sec_crypto.c | 97 |
2 files changed, 94 insertions, 5 deletions
diff --git a/drivers/crypto/hisilicon/sec2/sec.h b/drivers/crypto/hisilicon/sec2/sec.h index 2960faeea1b3..3fe78754fba2 100644 --- a/drivers/crypto/hisilicon/sec2/sec.h +++ b/drivers/crypto/hisilicon/sec2/sec.h @@ -88,7 +88,9 @@ struct sec_auth_ctx { u8 a_key_len; u8 mac_len; u8 a_alg; + bool fallback; struct crypto_shash *hash_tfm; + struct crypto_aead *fallback_aead_tfm; }; /* SEC cipher context which cipher's relatives */ diff --git a/drivers/crypto/hisilicon/sec2/sec_crypto.c b/drivers/crypto/hisilicon/sec2/sec_crypto.c index f2ab9ffa8f0e..194a9bca9c5e 100644 --- a/drivers/crypto/hisilicon/sec2/sec_crypto.c +++ b/drivers/crypto/hisilicon/sec2/sec_crypto.c @@ -2,6 +2,7 @@ /* Copyright (c) 2019 HiSilicon Limited. */ #include <crypto/aes.h> +#include <crypto/aead.h> #include <crypto/algapi.h> #include <crypto/authenc.h> #include <crypto/des.h> @@ -853,12 +854,16 @@ GEN_SEC_SETKEY_FUNC(sm4_ctr, SEC_CALG_SM4, SEC_CMODE_CTR) static int sec_cipher_pbuf_map(struct sec_ctx *ctx, struct sec_req *req, struct scatterlist *src) { - struct aead_request *aead_req = req->aead_req.aead_req; + struct sec_aead_req *a_req = &req->aead_req; + struct aead_request *aead_req = a_req->aead_req; struct sec_cipher_req *c_req = &req->c_req; struct sec_qp_ctx *qp_ctx = req->qp_ctx; struct device *dev = ctx->dev; int copy_size, pbuf_length; int req_id = req->req_id; + struct crypto_aead *tfm; + size_t authsize; + u8 *mac_offset; if (ctx->alg_type == SEC_AEAD) copy_size = aead_req->cryptlen + aead_req->assoclen; @@ -866,12 +871,17 @@ static int sec_cipher_pbuf_map(struct sec_ctx *ctx, struct sec_req *req, copy_size = c_req->c_len; pbuf_length = sg_copy_to_buffer(src, sg_nents(src), - qp_ctx->res[req_id].pbuf, - copy_size); + qp_ctx->res[req_id].pbuf, copy_size); if (unlikely(pbuf_length != copy_size)) { dev_err(dev, "copy src data to pbuf error!\n"); return -EINVAL; } + if (!c_req->encrypt && ctx->alg_type == SEC_AEAD) { + tfm = crypto_aead_reqtfm(aead_req); + authsize = crypto_aead_authsize(tfm); + mac_offset = qp_ctx->res[req_id].pbuf + copy_size - authsize; + memcpy(a_req->out_mac, mac_offset, authsize); + } c_req->c_in_dma = qp_ctx->res[req_id].pbuf_dma; c_req->c_out_dma = c_req->c_in_dma; @@ -1044,6 +1054,28 @@ static int sec_aead_auth_set_key(struct sec_auth_ctx *ctx, return 0; } +static int sec_aead_setauthsize(struct crypto_aead *aead, unsigned int authsize) +{ + struct crypto_tfm *tfm = crypto_aead_tfm(aead); + struct sec_ctx *ctx = crypto_tfm_ctx(tfm); + struct sec_auth_ctx *a_ctx = &ctx->a_ctx; + + if (unlikely(a_ctx->fallback_aead_tfm)) + return crypto_aead_setauthsize(a_ctx->fallback_aead_tfm, authsize); + + return 0; +} + +static int sec_aead_fallback_setkey(struct sec_auth_ctx *a_ctx, + struct crypto_aead *tfm, const u8 *key, + unsigned int keylen) +{ + crypto_aead_clear_flags(a_ctx->fallback_aead_tfm, CRYPTO_TFM_REQ_MASK); + crypto_aead_set_flags(a_ctx->fallback_aead_tfm, + crypto_aead_get_flags(tfm) & CRYPTO_TFM_REQ_MASK); + return crypto_aead_setkey(a_ctx->fallback_aead_tfm, key, keylen); +} + static int sec_aead_setkey(struct crypto_aead *tfm, const u8 *key, const u32 keylen, const enum sec_hash_alg a_alg, const enum sec_calg c_alg, @@ -1052,6 +1084,7 @@ static int sec_aead_setkey(struct crypto_aead *tfm, const u8 *key, { struct sec_ctx *ctx = crypto_aead_ctx(tfm); struct sec_cipher_ctx *c_ctx = &ctx->c_ctx; + struct sec_auth_ctx *a_ctx = &ctx->a_ctx; struct device *dev = ctx->dev; struct crypto_authenc_keys keys; int ret; @@ -1069,6 +1102,12 @@ static int sec_aead_setkey(struct crypto_aead *tfm, const u8 *key, } memcpy(c_ctx->c_key, key, keylen); + if (unlikely(a_ctx->fallback_aead_tfm)) { + ret = sec_aead_fallback_setkey(a_ctx, tfm, key, keylen); + if (ret) + return ret; + } + return 0; } @@ -1857,7 +1896,10 @@ static void sec_aead_ctx_exit(struct crypto_aead *tfm) static int sec_aead_xcm_ctx_init(struct crypto_aead *tfm) { + struct aead_alg *alg = crypto_aead_alg(tfm); struct sec_ctx *ctx = crypto_aead_ctx(tfm); + struct sec_auth_ctx *a_ctx = &ctx->a_ctx; + const char *aead_name = alg->base.cra_name; int ret; ret = sec_aead_init(tfm); @@ -1866,11 +1908,24 @@ static int sec_aead_xcm_ctx_init(struct crypto_aead *tfm) return ret; } + a_ctx->fallback_aead_tfm = crypto_alloc_aead(aead_name, 0, + CRYPTO_ALG_NEED_FALLBACK | + CRYPTO_ALG_ASYNC); + if (IS_ERR(a_ctx->fallback_aead_tfm)) { + dev_err(ctx->dev, "aead driver alloc fallback tfm error!\n"); + sec_aead_exit(tfm); + return PTR_ERR(a_ctx->fallback_aead_tfm); + } + a_ctx->fallback = false; + return 0; } static void sec_aead_xcm_ctx_exit(struct crypto_aead *tfm) { + struct sec_ctx *ctx = crypto_aead_ctx(tfm); + + crypto_free_aead(ctx->a_ctx.fallback_aead_tfm); sec_aead_exit(tfm); } @@ -2189,6 +2244,7 @@ static int sec_aead_param_check(struct sec_ctx *ctx, struct sec_req *sreq) if (unlikely(!req->cryptlen || (!sreq->c_req.encrypt && req->cryptlen <= authsize))) { dev_err(dev, "Kunpeng920 not support 0 length!\n"); + ctx->a_ctx.fallback = true; return -EINVAL; } } @@ -2211,6 +2267,31 @@ static int sec_aead_param_check(struct sec_ctx *ctx, struct sec_req *sreq) return 0; } +static int sec_aead_soft_crypto(struct sec_ctx *ctx, + struct aead_request *aead_req, + bool encrypt) +{ + struct aead_request *subreq = aead_request_ctx(aead_req); + struct sec_auth_ctx *a_ctx = &ctx->a_ctx; + struct device *dev = ctx->dev; + + /* Kunpeng920 aead mode not support input 0 size */ + if (!a_ctx->fallback_aead_tfm) { + dev_err(dev, "aead fallbcak tfm is NULL!\n"); + return -EINVAL; + } + + aead_request_set_tfm(subreq, a_ctx->fallback_aead_tfm); + aead_request_set_callback(subreq, aead_req->base.flags, + aead_req->base.complete, aead_req->base.data); + aead_request_set_crypt(subreq, aead_req->src, aead_req->dst, + aead_req->cryptlen, aead_req->iv); + aead_request_set_ad(subreq, aead_req->assoclen); + + return encrypt ? crypto_aead_encrypt(subreq) : + crypto_aead_decrypt(subreq); +} + static int sec_aead_crypto(struct aead_request *a_req, bool encrypt) { struct crypto_aead *tfm = crypto_aead_reqtfm(a_req); @@ -2224,8 +2305,11 @@ static int sec_aead_crypto(struct aead_request *a_req, bool encrypt) req->ctx = ctx; ret = sec_aead_param_check(ctx, req); - if (unlikely(ret)) + if (unlikely(ret)) { + if (ctx->a_ctx.fallback) + return sec_aead_soft_crypto(ctx, a_req, encrypt); return -EINVAL; + } return ctx->req_op->process(ctx, req); } @@ -2247,7 +2331,9 @@ static int sec_aead_decrypt(struct aead_request *a_req) .cra_name = sec_cra_name,\ .cra_driver_name = "hisi_sec_"sec_cra_name,\ .cra_priority = SEC_PRIORITY,\ - .cra_flags = CRYPTO_ALG_ASYNC | CRYPTO_ALG_ALLOCATES_MEMORY,\ + .cra_flags = CRYPTO_ALG_ASYNC |\ + CRYPTO_ALG_ALLOCATES_MEMORY |\ + CRYPTO_ALG_NEED_FALLBACK,\ .cra_blocksize = blk_size,\ .cra_ctxsize = sizeof(struct sec_ctx),\ .cra_module = THIS_MODULE,\ @@ -2255,6 +2341,7 @@ static int sec_aead_decrypt(struct aead_request *a_req) .init = ctx_init,\ .exit = ctx_exit,\ .setkey = sec_set_key,\ + .setauthsize = sec_aead_setauthsize,\ .decrypt = sec_aead_decrypt,\ .encrypt = sec_aead_encrypt,\ .ivsize = iv_size,\ |