static void *prism2_wep_init(int keyidx)
{
struct prism2_wep_data *priv;
priv = kzalloc(sizeof(*priv), GFP_KERNEL);
if (!priv)
return NULL;
priv->key_idx = keyidx;
priv->tx_tfm = crypto_alloc_sync_skcipher("ecb(arc4)", 0, 0);
if (IS_ERR(priv->tx_tfm))
goto free_priv;
priv->rx_tfm = crypto_alloc_sync_skcipher("ecb(arc4)", 0, 0);
if (IS_ERR(priv->rx_tfm))
goto free_tx;
/* start WEP IV from a random value */
get_random_bytes(&priv->iv, 4);
return priv;
free_tx:
crypto_free_sync_skcipher(priv->tx_tfm);
free_priv:
kfree(priv);
return NULL;
}
static int qce_ablkcipher_init(struct crypto_tfm *tfm)
{
struct qce_cipher_ctx *ctx = crypto_tfm_ctx(tfm);
memset(ctx, 0, sizeof(*ctx));
tfm->crt_ablkcipher.reqsize = sizeof(struct qce_cipher_reqctx);
ctx->fallback = crypto_alloc_sync_skcipher(crypto_tfm_alg_name(tfm),
0, CRYPTO_ALG_NEED_FALLBACK);
return PTR_ERR_OR_ZERO(ctx->fallback);
}
static int p8_aes_ctr_init(struct crypto_tfm *tfm)
{
const char *alg = crypto_tfm_alg_name(tfm);
struct crypto_sync_skcipher *fallback;
struct p8_aes_ctr_ctx *ctx = crypto_tfm_ctx(tfm);
fallback = crypto_alloc_sync_skcipher(alg, 0,
CRYPTO_ALG_NEED_FALLBACK);
if (IS_ERR(fallback)) {
printk(KERN_ERR
"Failed to allocate transformation for '%s': %ld\n",
alg, PTR_ERR(fallback));
return PTR_ERR(fallback);
}
crypto_sync_skcipher_set_flags(
fallback,
crypto_skcipher_get_flags((struct crypto_skcipher *)tfm));
ctx->fallback = fallback;
return 0;
}
