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cryptodev: setiv only when really need

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ECB mode cipher doesn't need IV, if we setiv for it then qemu
crypto API would report "Expected IV size 0 not **", so we should
setiv only when the cipher algos really need.

Signed-off-by: Longpeng(Mike) <longpeng2@huawei.com>
Signed-off-by: Gonglei <arei.gonglei@huawei.com>
This commit is contained in:
Longpeng(Mike) 2017-01-14 14:14:27 +08:00 committed by Gonglei
parent 55a19ad8b2
commit 50d19cf368
1 changed files with 6 additions and 4 deletions
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10
backends/cryptodev-builtin.c
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@ -320,10 +320,12 @@ static int cryptodev_builtin_sym_operation(
sess = builtin->sessions[op_info->session_id];
ret = qcrypto_cipher_setiv(sess->cipher, op_info->iv,
op_info->iv_len, errp);
if (ret < 0) {
return -VIRTIO_CRYPTO_ERR;
if (op_info->iv_len > 0) {
ret = qcrypto_cipher_setiv(sess->cipher, op_info->iv,
op_info->iv_len, errp);
if (ret < 0) {
return -VIRTIO_CRYPTO_ERR;
}
}
if (sess->direction == VIRTIO_CRYPTO_OP_ENCRYPT) {