on 2016/11/17 23:55, Benedetto, Salvatore wrote:
> Hi Gonglei,
>
> ...
>> +
>> +static int virtio_crypto_alg_ablkcipher_init_session(
>> + struct virtio_crypto_ablkcipher_ctx *ctx,
>> + int alg, const uint8_t *key,
>> + unsigned int keylen,
>> + int encrypt)
>> +{
>> + struct scatterlist outhdr, key_sg, inhdr, *sgs[3];
>> + unsigned int tmp;
>> + struct virtio_crypto_session_input input;
>> + struct virtio_crypto_op_ctrl_req ctrl;
>> + struct virtio_crypto *vcrypto = ctx->vcrypto;
>> + int op = encrypt ? VIRTIO_CRYPTO_OP_ENCRYPT :
>> VIRTIO_CRYPTO_OP_DECRYPT;
>> + int err;
>> + unsigned int num_out = 0, num_in = 0;
>> +
>> + memset(&ctrl, 0, sizeof(ctrl));
>> + memset(&input, 0, sizeof(input));
>> + /* Pad ctrl header */
>> + ctrl.header.opcode =
>> cpu_to_le32(VIRTIO_CRYPTO_CIPHER_CREATE_SESSION);
>> + ctrl.header.algo = cpu_to_le32((uint32_t)alg);
>> + /* Set the default dataqueue id to 0 */
>> + ctrl.header.queue_id = 0;
>> +
>> + input.status = cpu_to_le32(VIRTIO_CRYPTO_ERR);
>> + /* Pad cipher's parameters */
>> + ctrl.u.sym_create_session.op_type =
>> + cpu_to_le32(VIRTIO_CRYPTO_SYM_OP_CIPHER);
>> + ctrl.u.sym_create_session.u.cipher.para.algo = ctrl.header.algo;
>> + ctrl.u.sym_create_session.u.cipher.para.keylen =
>> cpu_to_le32(keylen);
>> + ctrl.u.sym_create_session.u.cipher.para.op = cpu_to_le32(op);
>> +
>> + sg_init_one(&outhdr, &ctrl, sizeof(ctrl));
> I believe this won't work when the new virtually-mapped kernel stack (VMAP_STACK)
> is enabled.
I see, will fix it in the next version. Thanks for your comments :)
>
> Regards,
> Salvatore
--
Regards,
-Gonglei
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