[CRYPTO] tcrypt: Use async blkcipher interface
This patch converts the tcrypt module to use the asynchronous block cipher
interface. As all synchronous block ciphers can be used through the async
interface, tcrypt is still able to test them.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
diff --git a/crypto/tcrypt.c b/crypto/tcrypt.c
index 8eaa5aa..f0aed01 100644
--- a/crypto/tcrypt.c
+++ b/crypto/tcrypt.c
@@ -57,6 +57,11 @@
#define ENCRYPT 1
#define DECRYPT 0
+struct tcrypt_result {
+ struct completion completion;
+ int err;
+};
+
static unsigned int IDX[8] = { IDX1, IDX2, IDX3, IDX4, IDX5, IDX6, IDX7, IDX8 };
/*
@@ -84,6 +89,17 @@
printk("\n");
}
+static void tcrypt_complete(struct crypto_async_request *req, int err)
+{
+ struct tcrypt_result *res = req->data;
+
+ if (err == -EINPROGRESS)
+ return;
+
+ res->err = err;
+ complete(&res->completion);
+}
+
static void test_hash(char *algo, struct hash_testvec *template,
unsigned int tcount)
{
@@ -203,15 +219,14 @@
{
unsigned int ret, i, j, k, temp;
unsigned int tsize;
- unsigned int iv_len;
- unsigned int len;
char *q;
- struct crypto_blkcipher *tfm;
+ struct crypto_ablkcipher *tfm;
char *key;
struct cipher_testvec *cipher_tv;
- struct blkcipher_desc desc;
+ struct ablkcipher_request *req;
struct scatterlist sg[8];
const char *e;
+ struct tcrypt_result result;
if (enc == ENCRYPT)
e = "encryption";
@@ -232,15 +247,24 @@
memcpy(tvmem, template, tsize);
cipher_tv = (void *)tvmem;
- tfm = crypto_alloc_blkcipher(algo, 0, CRYPTO_ALG_ASYNC);
+ init_completion(&result.completion);
+
+ tfm = crypto_alloc_ablkcipher(algo, 0, 0);
if (IS_ERR(tfm)) {
printk("failed to load transform for %s: %ld\n", algo,
PTR_ERR(tfm));
return;
}
- desc.tfm = tfm;
- desc.flags = 0;
+
+ req = ablkcipher_request_alloc(tfm, GFP_KERNEL);
+ if (!req) {
+ printk("failed to allocate request for %s\n", algo);
+ goto out;
+ }
+
+ ablkcipher_request_set_callback(req, CRYPTO_TFM_REQ_MAY_BACKLOG,
+ tcrypt_complete, &result);
j = 0;
for (i = 0; i < tcount; i++) {
@@ -249,17 +273,17 @@
printk("test %u (%d bit key):\n",
j, cipher_tv[i].klen * 8);
- crypto_blkcipher_clear_flags(tfm, ~0);
+ crypto_ablkcipher_clear_flags(tfm, ~0);
if (cipher_tv[i].wk)
- crypto_blkcipher_set_flags(
+ crypto_ablkcipher_set_flags(
tfm, CRYPTO_TFM_REQ_WEAK_KEY);
key = cipher_tv[i].key;
- ret = crypto_blkcipher_setkey(tfm, key,
- cipher_tv[i].klen);
+ ret = crypto_ablkcipher_setkey(tfm, key,
+ cipher_tv[i].klen);
if (ret) {
printk("setkey() failed flags=%x\n",
- crypto_blkcipher_get_flags(tfm));
+ crypto_ablkcipher_get_flags(tfm));
if (!cipher_tv[i].fail)
goto out;
@@ -268,19 +292,28 @@
sg_set_buf(&sg[0], cipher_tv[i].input,
cipher_tv[i].ilen);
- iv_len = crypto_blkcipher_ivsize(tfm);
- if (iv_len)
- crypto_blkcipher_set_iv(tfm, cipher_tv[i].iv,
- iv_len);
+ ablkcipher_request_set_crypt(req, sg, sg,
+ cipher_tv[i].ilen,
+ cipher_tv[i].iv);
- len = cipher_tv[i].ilen;
ret = enc ?
- crypto_blkcipher_encrypt(&desc, sg, sg, len) :
- crypto_blkcipher_decrypt(&desc, sg, sg, len);
+ crypto_ablkcipher_encrypt(req) :
+ crypto_ablkcipher_decrypt(req);
- if (ret) {
- printk("%s () failed flags=%x\n", e,
- desc.flags);
+ switch (ret) {
+ case 0:
+ break;
+ case -EINPROGRESS:
+ case -EBUSY:
+ ret = wait_for_completion_interruptible(
+ &result.completion);
+ if (!ret && !((ret = result.err))) {
+ INIT_COMPLETION(result.completion);
+ break;
+ }
+ /* fall through */
+ default:
+ printk("%s () failed err=%d\n", e, -ret);
goto out;
}
@@ -303,17 +336,17 @@
printk("test %u (%d bit key):\n",
j, cipher_tv[i].klen * 8);
- crypto_blkcipher_clear_flags(tfm, ~0);
+ crypto_ablkcipher_clear_flags(tfm, ~0);
if (cipher_tv[i].wk)
- crypto_blkcipher_set_flags(
+ crypto_ablkcipher_set_flags(
tfm, CRYPTO_TFM_REQ_WEAK_KEY);
key = cipher_tv[i].key;
- ret = crypto_blkcipher_setkey(tfm, key,
- cipher_tv[i].klen);
+ ret = crypto_ablkcipher_setkey(tfm, key,
+ cipher_tv[i].klen);
if (ret) {
printk("setkey() failed flags=%x\n",
- crypto_blkcipher_get_flags(tfm));
+ crypto_ablkcipher_get_flags(tfm));
if (!cipher_tv[i].fail)
goto out;
@@ -329,19 +362,28 @@
cipher_tv[i].tap[k]);
}
- iv_len = crypto_blkcipher_ivsize(tfm);
- if (iv_len)
- crypto_blkcipher_set_iv(tfm, cipher_tv[i].iv,
- iv_len);
+ ablkcipher_request_set_crypt(req, sg, sg,
+ cipher_tv[i].ilen,
+ cipher_tv[i].iv);
- len = cipher_tv[i].ilen;
ret = enc ?
- crypto_blkcipher_encrypt(&desc, sg, sg, len) :
- crypto_blkcipher_decrypt(&desc, sg, sg, len);
+ crypto_ablkcipher_encrypt(req) :
+ crypto_ablkcipher_decrypt(req);
- if (ret) {
- printk("%s () failed flags=%x\n", e,
- desc.flags);
+ switch (ret) {
+ case 0:
+ break;
+ case -EINPROGRESS:
+ case -EBUSY:
+ ret = wait_for_completion_interruptible(
+ &result.completion);
+ if (!ret && !((ret = result.err))) {
+ INIT_COMPLETION(result.completion);
+ break;
+ }
+ /* fall through */
+ default:
+ printk("%s () failed err=%d\n", e, -ret);
goto out;
}
@@ -360,7 +402,8 @@
}
out:
- crypto_free_blkcipher(tfm);
+ crypto_free_ablkcipher(tfm);
+ ablkcipher_request_free(req);
}
static int test_cipher_jiffies(struct blkcipher_desc *desc, int enc, char *p,
@@ -832,7 +875,7 @@
while (*name) {
printk("alg %s ", *name);
- printk(crypto_has_alg(*name, 0, CRYPTO_ALG_ASYNC) ?
+ printk(crypto_has_alg(*name, 0, 0) ?
"found\n" : "not found\n");
name++;
}