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authorIngo Molnar <mingo@elte.hu>2008-07-18 19:31:12 +0200
committerIngo Molnar <mingo@elte.hu>2008-07-18 19:31:12 +0200
commit3e370b29d35fb01bfb92c2814d6f79bf6a2cb970 (patch)
tree3b8fb467d60bfe6a34686f4abdc3a60050ba40a4 /crypto/cryptd.c
parent88d1dce3a74367291f65a757fbdcaf17f042f30c (diff)
parent5b664cb235e97afbf34db9c4d77f08ebd725335e (diff)
Merge branch 'linus' into x86/pci-ioapic-boot-irq-quirks
Conflicts: drivers/pci/quirks.c Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'crypto/cryptd.c')
-rw-r--r--crypto/cryptd.c253
1 files changed, 248 insertions, 5 deletions
diff --git a/crypto/cryptd.c b/crypto/cryptd.c
index b150de56205..d29e06b350f 100644
--- a/crypto/cryptd.c
+++ b/crypto/cryptd.c
@@ -11,6 +11,7 @@
*/
#include <crypto/algapi.h>
+#include <crypto/internal/hash.h>
#include <linux/err.h>
#include <linux/init.h>
#include <linux/kernel.h>
@@ -45,6 +46,13 @@ struct cryptd_blkcipher_request_ctx {
crypto_completion_t complete;
};
+struct cryptd_hash_ctx {
+ struct crypto_hash *child;
+};
+
+struct cryptd_hash_request_ctx {
+ crypto_completion_t complete;
+};
static inline struct cryptd_state *cryptd_get_state(struct crypto_tfm *tfm)
{
@@ -82,10 +90,8 @@ static void cryptd_blkcipher_crypt(struct ablkcipher_request *req,
rctx = ablkcipher_request_ctx(req);
- if (unlikely(err == -EINPROGRESS)) {
- rctx->complete(&req->base, err);
- return;
- }
+ if (unlikely(err == -EINPROGRESS))
+ goto out;
desc.tfm = child;
desc.info = req->info;
@@ -95,8 +101,9 @@ static void cryptd_blkcipher_crypt(struct ablkcipher_request *req,
req->base.complete = rctx->complete;
+out:
local_bh_disable();
- req->base.complete(&req->base, err);
+ rctx->complete(&req->base, err);
local_bh_enable();
}
@@ -261,6 +268,240 @@ out_put_alg:
return inst;
}
+static int cryptd_hash_init_tfm(struct crypto_tfm *tfm)
+{
+ struct crypto_instance *inst = crypto_tfm_alg_instance(tfm);
+ struct cryptd_instance_ctx *ictx = crypto_instance_ctx(inst);
+ struct crypto_spawn *spawn = &ictx->spawn;
+ struct cryptd_hash_ctx *ctx = crypto_tfm_ctx(tfm);
+ struct crypto_hash *cipher;
+
+ cipher = crypto_spawn_hash(spawn);
+ if (IS_ERR(cipher))
+ return PTR_ERR(cipher);
+
+ ctx->child = cipher;
+ tfm->crt_ahash.reqsize =
+ sizeof(struct cryptd_hash_request_ctx);
+ return 0;
+}
+
+static void cryptd_hash_exit_tfm(struct crypto_tfm *tfm)
+{
+ struct cryptd_hash_ctx *ctx = crypto_tfm_ctx(tfm);
+ struct cryptd_state *state = cryptd_get_state(tfm);
+ int active;
+
+ mutex_lock(&state->mutex);
+ active = ahash_tfm_in_queue(&state->queue,
+ __crypto_ahash_cast(tfm));
+ mutex_unlock(&state->mutex);
+
+ BUG_ON(active);
+
+ crypto_free_hash(ctx->child);
+}
+
+static int cryptd_hash_setkey(struct crypto_ahash *parent,
+ const u8 *key, unsigned int keylen)
+{
+ struct cryptd_hash_ctx *ctx = crypto_ahash_ctx(parent);
+ struct crypto_hash *child = ctx->child;
+ int err;
+
+ crypto_hash_clear_flags(child, CRYPTO_TFM_REQ_MASK);
+ crypto_hash_set_flags(child, crypto_ahash_get_flags(parent) &
+ CRYPTO_TFM_REQ_MASK);
+ err = crypto_hash_setkey(child, key, keylen);
+ crypto_ahash_set_flags(parent, crypto_hash_get_flags(child) &
+ CRYPTO_TFM_RES_MASK);
+ return err;
+}
+
+static int cryptd_hash_enqueue(struct ahash_request *req,
+ crypto_completion_t complete)
+{
+ struct cryptd_hash_request_ctx *rctx = ahash_request_ctx(req);
+ struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
+ struct cryptd_state *state =
+ cryptd_get_state(crypto_ahash_tfm(tfm));
+ int err;
+
+ rctx->complete = req->base.complete;
+ req->base.complete = complete;
+
+ spin_lock_bh(&state->lock);
+ err = ahash_enqueue_request(&state->queue, req);
+ spin_unlock_bh(&state->lock);
+
+ wake_up_process(state->task);
+ return err;
+}
+
+static void cryptd_hash_init(struct crypto_async_request *req_async, int err)
+{
+ struct cryptd_hash_ctx *ctx = crypto_tfm_ctx(req_async->tfm);
+ struct crypto_hash *child = ctx->child;
+ struct ahash_request *req = ahash_request_cast(req_async);
+ struct cryptd_hash_request_ctx *rctx;
+ struct hash_desc desc;
+
+ rctx = ahash_request_ctx(req);
+
+ if (unlikely(err == -EINPROGRESS))
+ goto out;
+
+ desc.tfm = child;
+ desc.flags = CRYPTO_TFM_REQ_MAY_SLEEP;
+
+ err = crypto_hash_crt(child)->init(&desc);
+
+ req->base.complete = rctx->complete;
+
+out:
+ local_bh_disable();
+ rctx->complete(&req->base, err);
+ local_bh_enable();
+}
+
+static int cryptd_hash_init_enqueue(struct ahash_request *req)
+{
+ return cryptd_hash_enqueue(req, cryptd_hash_init);
+}
+
+static void cryptd_hash_update(struct crypto_async_request *req_async, int err)
+{
+ struct cryptd_hash_ctx *ctx = crypto_tfm_ctx(req_async->tfm);
+ struct crypto_hash *child = ctx->child;
+ struct ahash_request *req = ahash_request_cast(req_async);
+ struct cryptd_hash_request_ctx *rctx;
+ struct hash_desc desc;
+
+ rctx = ahash_request_ctx(req);
+
+ if (unlikely(err == -EINPROGRESS))
+ goto out;
+
+ desc.tfm = child;
+ desc.flags = CRYPTO_TFM_REQ_MAY_SLEEP;
+
+ err = crypto_hash_crt(child)->update(&desc,
+ req->src,
+ req->nbytes);
+
+ req->base.complete = rctx->complete;
+
+out:
+ local_bh_disable();
+ rctx->complete(&req->base, err);
+ local_bh_enable();
+}
+
+static int cryptd_hash_update_enqueue(struct ahash_request *req)
+{
+ return cryptd_hash_enqueue(req, cryptd_hash_update);
+}
+
+static void cryptd_hash_final(struct crypto_async_request *req_async, int err)
+{
+ struct cryptd_hash_ctx *ctx = crypto_tfm_ctx(req_async->tfm);
+ struct crypto_hash *child = ctx->child;
+ struct ahash_request *req = ahash_request_cast(req_async);
+ struct cryptd_hash_request_ctx *rctx;
+ struct hash_desc desc;
+
+ rctx = ahash_request_ctx(req);
+
+ if (unlikely(err == -EINPROGRESS))
+ goto out;
+
+ desc.tfm = child;
+ desc.flags = CRYPTO_TFM_REQ_MAY_SLEEP;
+
+ err = crypto_hash_crt(child)->final(&desc, req->result);
+
+ req->base.complete = rctx->complete;
+
+out:
+ local_bh_disable();
+ rctx->complete(&req->base, err);
+ local_bh_enable();
+}
+
+static int cryptd_hash_final_enqueue(struct ahash_request *req)
+{
+ return cryptd_hash_enqueue(req, cryptd_hash_final);
+}
+
+static void cryptd_hash_digest(struct crypto_async_request *req_async, int err)
+{
+ struct cryptd_hash_ctx *ctx = crypto_tfm_ctx(req_async->tfm);
+ struct crypto_hash *child = ctx->child;
+ struct ahash_request *req = ahash_request_cast(req_async);
+ struct cryptd_hash_request_ctx *rctx;
+ struct hash_desc desc;
+
+ rctx = ahash_request_ctx(req);
+
+ if (unlikely(err == -EINPROGRESS))
+ goto out;
+
+ desc.tfm = child;
+ desc.flags = CRYPTO_TFM_REQ_MAY_SLEEP;
+
+ err = crypto_hash_crt(child)->digest(&desc,
+ req->src,
+ req->nbytes,
+ req->result);
+
+ req->base.complete = rctx->complete;
+
+out:
+ local_bh_disable();
+ rctx->complete(&req->base, err);
+ local_bh_enable();
+}
+
+static int cryptd_hash_digest_enqueue(struct ahash_request *req)
+{
+ return cryptd_hash_enqueue(req, cryptd_hash_digest);
+}
+
+static struct crypto_instance *cryptd_alloc_hash(
+ struct rtattr **tb, struct cryptd_state *state)
+{
+ struct crypto_instance *inst;
+ struct crypto_alg *alg;
+
+ alg = crypto_get_attr_alg(tb, CRYPTO_ALG_TYPE_HASH,
+ CRYPTO_ALG_TYPE_HASH_MASK);
+ if (IS_ERR(alg))
+ return ERR_PTR(PTR_ERR(alg));
+
+ inst = cryptd_alloc_instance(alg, state);
+ if (IS_ERR(inst))
+ goto out_put_alg;
+
+ inst->alg.cra_flags = CRYPTO_ALG_TYPE_AHASH | CRYPTO_ALG_ASYNC;
+ inst->alg.cra_type = &crypto_ahash_type;
+
+ inst->alg.cra_ahash.digestsize = alg->cra_hash.digestsize;
+ inst->alg.cra_ctxsize = sizeof(struct cryptd_hash_ctx);
+
+ inst->alg.cra_init = cryptd_hash_init_tfm;
+ inst->alg.cra_exit = cryptd_hash_exit_tfm;
+
+ inst->alg.cra_ahash.init = cryptd_hash_init_enqueue;
+ inst->alg.cra_ahash.update = cryptd_hash_update_enqueue;
+ inst->alg.cra_ahash.final = cryptd_hash_final_enqueue;
+ inst->alg.cra_ahash.setkey = cryptd_hash_setkey;
+ inst->alg.cra_ahash.digest = cryptd_hash_digest_enqueue;
+
+out_put_alg:
+ crypto_mod_put(alg);
+ return inst;
+}
+
static struct cryptd_state state;
static struct crypto_instance *cryptd_alloc(struct rtattr **tb)
@@ -274,6 +515,8 @@ static struct crypto_instance *cryptd_alloc(struct rtattr **tb)
switch (algt->type & algt->mask & CRYPTO_ALG_TYPE_MASK) {
case CRYPTO_ALG_TYPE_BLKCIPHER:
return cryptd_alloc_blkcipher(tb, &state);
+ case CRYPTO_ALG_TYPE_DIGEST:
+ return cryptd_alloc_hash(tb, &state);
}
return ERR_PTR(-EINVAL);