From 0496f56065e00f6c3bfcefc4f9b5419847e4a8b5 Mon Sep 17 00:00:00 2001 From: Herbert Xu Date: Thu, 28 May 2015 22:08:00 +0800 Subject: [PATCH] crypto: pcrypt - Add support for new AEAD interface This patch converts pcrypt over to the new AEAD interface. Signed-off-by: Herbert Xu --- crypto/pcrypt.c | 135 ++++++++++++++---------------------------------- 1 file changed, 40 insertions(+), 95 deletions(-) diff --git a/crypto/pcrypt.c b/crypto/pcrypt.c index ff174b61d820..45e7d5155672 100644 --- a/crypto/pcrypt.c +++ b/crypto/pcrypt.c @@ -123,14 +123,6 @@ static void pcrypt_aead_serial(struct padata_priv *padata) aead_request_complete(req->base.data, padata->info); } -static void pcrypt_aead_giv_serial(struct padata_priv *padata) -{ - struct pcrypt_request *preq = pcrypt_padata_request(padata); - struct aead_givcrypt_request *req = pcrypt_request_ctx(preq); - - aead_request_complete(req->areq.base.data, padata->info); -} - static void pcrypt_aead_done(struct crypto_async_request *areq, int err) { struct aead_request *req = areq->data; @@ -176,7 +168,7 @@ static int pcrypt_aead_encrypt(struct aead_request *req) pcrypt_aead_done, req); aead_request_set_crypt(creq, req->src, req->dst, req->cryptlen, req->iv); - aead_request_set_assoc(creq, req->assoc, req->assoclen); + aead_request_set_ad(creq, req->assoclen); err = pcrypt_do_parallel(padata, &ctx->cb_cpu, &pencrypt); if (!err) @@ -218,7 +210,7 @@ static int pcrypt_aead_decrypt(struct aead_request *req) pcrypt_aead_done, req); aead_request_set_crypt(creq, req->src, req->dst, req->cryptlen, req->iv); - aead_request_set_assoc(creq, req->assoc, req->assoclen); + aead_request_set_ad(creq, req->assoclen); err = pcrypt_do_parallel(padata, &ctx->cb_cpu, &pdecrypt); if (!err) @@ -227,56 +219,12 @@ static int pcrypt_aead_decrypt(struct aead_request *req) return err; } -static void pcrypt_aead_givenc(struct padata_priv *padata) -{ - struct pcrypt_request *preq = pcrypt_padata_request(padata); - struct aead_givcrypt_request *req = pcrypt_request_ctx(preq); - - padata->info = crypto_aead_givencrypt(req); - - if (padata->info == -EINPROGRESS) - return; - - padata_do_serial(padata); -} - -static int pcrypt_aead_givencrypt(struct aead_givcrypt_request *req) -{ - int err; - struct aead_request *areq = &req->areq; - struct pcrypt_request *preq = aead_request_ctx(areq); - struct aead_givcrypt_request *creq = pcrypt_request_ctx(preq); - struct padata_priv *padata = pcrypt_request_padata(preq); - struct crypto_aead *aead = aead_givcrypt_reqtfm(req); - struct pcrypt_aead_ctx *ctx = crypto_aead_ctx(aead); - u32 flags = aead_request_flags(areq); - - memset(padata, 0, sizeof(struct padata_priv)); - - padata->parallel = pcrypt_aead_givenc; - padata->serial = pcrypt_aead_giv_serial; - - aead_givcrypt_set_tfm(creq, ctx->child); - aead_givcrypt_set_callback(creq, flags & ~CRYPTO_TFM_REQ_MAY_SLEEP, - pcrypt_aead_done, areq); - aead_givcrypt_set_crypt(creq, areq->src, areq->dst, - areq->cryptlen, areq->iv); - aead_givcrypt_set_assoc(creq, areq->assoc, areq->assoclen); - aead_givcrypt_set_giv(creq, req->giv, req->seq); - - err = pcrypt_do_parallel(padata, &ctx->cb_cpu, &pencrypt); - if (!err) - return -EINPROGRESS; - - return err; -} - -static int pcrypt_aead_init_tfm(struct crypto_tfm *tfm) +static int pcrypt_aead_init_tfm(struct crypto_aead *tfm) { int cpu, cpu_index; - struct crypto_instance *inst = crypto_tfm_alg_instance(tfm); - struct pcrypt_instance_ctx *ictx = crypto_instance_ctx(inst); - struct pcrypt_aead_ctx *ctx = crypto_tfm_ctx(tfm); + struct aead_instance *inst = aead_alg_instance(tfm); + struct pcrypt_instance_ctx *ictx = aead_instance_ctx(inst); + struct pcrypt_aead_ctx *ctx = crypto_aead_ctx(tfm); struct crypto_aead *cipher; cpu_index = (unsigned int)atomic_inc_return(&ictx->tfm_count) % @@ -286,23 +234,22 @@ static int pcrypt_aead_init_tfm(struct crypto_tfm *tfm) for (cpu = 0; cpu < cpu_index; cpu++) ctx->cb_cpu = cpumask_next(ctx->cb_cpu, cpu_online_mask); - cipher = crypto_spawn_aead(crypto_instance_ctx(inst)); + cipher = crypto_spawn_aead(&ictx->spawn); if (IS_ERR(cipher)) return PTR_ERR(cipher); ctx->child = cipher; - crypto_aead_set_reqsize(__crypto_aead_cast(tfm), - sizeof(struct pcrypt_request) + - sizeof(struct aead_givcrypt_request) + - crypto_aead_reqsize(cipher)); + crypto_aead_set_reqsize(tfm, sizeof(struct pcrypt_request) + + sizeof(struct aead_request) + + crypto_aead_reqsize(cipher)); return 0; } -static void pcrypt_aead_exit_tfm(struct crypto_tfm *tfm) +static void pcrypt_aead_exit_tfm(struct crypto_aead *tfm) { - struct pcrypt_aead_ctx *ctx = crypto_tfm_ctx(tfm); + struct pcrypt_aead_ctx *ctx = crypto_aead_ctx(tfm); crypto_free_aead(ctx->child); } @@ -323,78 +270,76 @@ static int pcrypt_init_instance(struct crypto_instance *inst, return 0; } -static struct crypto_instance *pcrypt_alloc_aead(struct rtattr **tb, - u32 type, u32 mask) +static int pcrypt_create_aead(struct crypto_template *tmpl, struct rtattr **tb, + u32 type, u32 mask) { struct pcrypt_instance_ctx *ctx; - struct crypto_instance *inst; - struct crypto_alg *alg; + struct aead_instance *inst; + struct aead_alg *alg; const char *name; int err; name = crypto_attr_alg_name(tb[1]); if (IS_ERR(name)) - return ERR_CAST(name); + return PTR_ERR(name); inst = kzalloc(sizeof(*inst) + sizeof(*ctx), GFP_KERNEL); if (!inst) - return ERR_PTR(-ENOMEM); + return -ENOMEM; - ctx = crypto_instance_ctx(inst); - crypto_set_aead_spawn(&ctx->spawn, inst); + ctx = aead_instance_ctx(inst); + crypto_set_aead_spawn(&ctx->spawn, aead_crypto_instance(inst)); err = crypto_grab_aead(&ctx->spawn, name, 0, 0); if (err) goto out_free_inst; - alg = crypto_aead_spawn_alg(&ctx->spawn); - err = pcrypt_init_instance(inst, alg); + alg = crypto_spawn_aead_alg(&ctx->spawn); + err = pcrypt_init_instance(aead_crypto_instance(inst), &alg->base); if (err) goto out_drop_aead; - inst->alg.cra_flags = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_ASYNC; - inst->alg.cra_type = &crypto_aead_type; + inst->alg.ivsize = crypto_aead_alg_ivsize(alg); + inst->alg.maxauthsize = crypto_aead_alg_maxauthsize(alg); - inst->alg.cra_aead.ivsize = alg->cra_aead.ivsize; - inst->alg.cra_aead.geniv = alg->cra_aead.geniv; - inst->alg.cra_aead.maxauthsize = alg->cra_aead.maxauthsize; + inst->alg.base.cra_ctxsize = sizeof(struct pcrypt_aead_ctx); - inst->alg.cra_ctxsize = sizeof(struct pcrypt_aead_ctx); + inst->alg.init = pcrypt_aead_init_tfm; + inst->alg.exit = pcrypt_aead_exit_tfm; - inst->alg.cra_init = pcrypt_aead_init_tfm; - inst->alg.cra_exit = pcrypt_aead_exit_tfm; + inst->alg.setkey = pcrypt_aead_setkey; + inst->alg.setauthsize = pcrypt_aead_setauthsize; + inst->alg.encrypt = pcrypt_aead_encrypt; + inst->alg.decrypt = pcrypt_aead_decrypt; - inst->alg.cra_aead.setkey = pcrypt_aead_setkey; - inst->alg.cra_aead.setauthsize = pcrypt_aead_setauthsize; - inst->alg.cra_aead.encrypt = pcrypt_aead_encrypt; - inst->alg.cra_aead.decrypt = pcrypt_aead_decrypt; - inst->alg.cra_aead.givencrypt = pcrypt_aead_givencrypt; + err = aead_register_instance(tmpl, inst); + if (err) + goto out_drop_aead; out: - return inst; + return err; out_drop_aead: crypto_drop_aead(&ctx->spawn); out_free_inst: kfree(inst); - inst = ERR_PTR(err); goto out; } -static struct crypto_instance *pcrypt_alloc(struct rtattr **tb) +static int pcrypt_create(struct crypto_template *tmpl, struct rtattr **tb) { struct crypto_attr_type *algt; algt = crypto_get_attr_type(tb); if (IS_ERR(algt)) - return ERR_CAST(algt); + return PTR_ERR(algt); switch (algt->type & algt->mask & CRYPTO_ALG_TYPE_MASK) { case CRYPTO_ALG_TYPE_AEAD: - return pcrypt_alloc_aead(tb, algt->type, algt->mask); + return pcrypt_create_aead(tmpl, tb, algt->type, algt->mask); } - return ERR_PTR(-EINVAL); + return -EINVAL; } static void pcrypt_free(struct crypto_instance *inst) @@ -516,7 +461,7 @@ static void pcrypt_fini_padata(struct padata_pcrypt *pcrypt) static struct crypto_template pcrypt_tmpl = { .name = "pcrypt", - .alloc = pcrypt_alloc, + .create = pcrypt_create, .free = pcrypt_free, .module = THIS_MODULE, }; -- 2.20.1