@@ -155,8 +155,7 @@ static void meson_setup_keyiv_descs(struct cipher_ctx *ctx)
return;
if (blockmode == DESC_OPMODE_CBC) {
- memcpy(op->key + AES_MAX_KEY_SIZE, ctx->areq->iv, ivsize);
- ctx->keyiv.len = AES_MAX_KEY_SIZE + ivsize;
+ memcpy(op->keyiv + AES_MAX_KEY_SIZE, ctx->areq->iv, ivsize);
dma_sync_single_for_device(mc->dev, ctx->keyiv.addr,
ctx->keyiv.len, DMA_TO_DEVICE);
}
@@ -319,16 +318,16 @@ static int meson_cipher(struct skcipher_request *areq)
mc->chanlist[rctx->flow].stat_req++;
#endif
- op->key = kzalloc(48, GFP_KERNEL | GFP_DMA);
- if (!op.key)
- return -ENOMEM;
-
- memcpy(op->key, op->key, op->keylen);
ctx.keyiv.len = op->keylen;
if (ctx.keyiv.len == AES_KEYSIZE_192)
ctx.keyiv.len = AES_MAX_KEY_SIZE;
- ctx.keyiv.addr = dma_map_single(mc->dev, op->key, ctx.keyiv.len,
+ if (algt->blockmode == DESC_OPMODE_CBC) {
+ memcpy(op->keyiv + AES_MAX_KEY_SIZE, areq->iv, ivsize);
+ ctx.keyiv.len = AES_MAX_KEY_SIZE + ivsize;
+ }
+
+ ctx.keyiv.addr = dma_map_single(mc->dev, op->keyiv, ctx.keyiv.len,
DMA_TO_DEVICE);
err = dma_mapping_error(mc->dev, ctx.keyiv.addr);
if (err) {
@@ -366,8 +365,6 @@ static int meson_cipher(struct skcipher_request *areq)
meson_unmap_scatterlist(areq, mc);
theend:
- kfree_sensitive(op->key);
-
return err;
}
@@ -450,7 +447,6 @@ static void meson_cipher_exit(struct crypto_tfm *tfm)
{
struct meson_cipher_tfm_ctx *op = crypto_tfm_ctx(tfm);
- kfree_sensitive(op->key);
crypto_free_skcipher(op->fallback_tfm);
}
@@ -474,11 +470,9 @@ static int meson_aes_setkey(struct crypto_skcipher *tfm, const u8 *key,
dev_dbg(mc->dev, "ERROR: Invalid keylen %u\n", keylen);
return -EINVAL;
}
- kfree_sensitive(op->key);
+
+ memcpy(op->keyiv, key, keylen);
op->keylen = keylen;
- op->key = kmemdup(key, keylen, GFP_KERNEL | GFP_DMA);
- if (!op->key)
- return -ENOMEM;
return crypto_skcipher_setkey(op->fallback_tfm, key, keylen);
}
@@ -127,15 +127,15 @@ struct meson_cipher_req_ctx {
/*
* struct meson_cipher_tfm_ctx - context for a skcipher TFM
- * @key: pointer to key data
+ * @keyiv: key data
* @keylen: len of the key
* @keymode: The keymode(type and size of key) associated with this TFM
* @mc: pointer to the private data of driver handling this TFM
* @fallback_tfm: pointer to the fallback TFM
*/
struct meson_cipher_tfm_ctx {
- u32 *key;
- u32 keylen;
+ u8 keyiv[AES_MAX_KEY_SIZE + AES_BLOCK_SIZE] ____cacheline_aligned;
+ u32 keylen ____cacheline_aligned;
u32 keymode;
struct meson_dev *mc;
struct crypto_skcipher *fallback_tfm;
It makes no sense to allocate memory via kzalloc, we can use static buffer, speedup data processing and don't think about kfree() calls. Signed-off-by: Alexey Romanov <avromanov@salutedevices.com> --- drivers/crypto/amlogic/amlogic-gxl-cipher.c | 24 ++++++++------------- drivers/crypto/amlogic/amlogic-gxl.h | 6 +++--- 2 files changed, 12 insertions(+), 18 deletions(-)