[openssl-users] Openssl asynchronous operation in real network

[Ananthu Unnikrishnan]

Hi all,

        We are not able to access the waitctx address from the job address
using ASYNC_get_wait_ctx(job) from a thread which starts in the bind
section of the dynamic engine. The job address is the same as that we got
using ASYNC_get_current_job.  Can anyone help on this?



On Tue, Jan 8, 2019 at 11:26 AM Ananthu Unnikrishnan <ananthuu741 at gmail.com>
wrote:

> Can anyone please help on this? If u need any additional information
> please let me know.
>
> On Mon, Jan 7, 2019 at 6:25 PM Ananthu Unnikrishnan <ananthuu741 at gmail.com>
> wrote:
>
>> Hi all,
>>
>> Adding more details to the previous mail. We have edited the OpenSSL code
>> for implementing the polling for changed fd's as in OpenSSL speed command.
>> Attached the code snippet of the same along with this mail.
>> Mentioned below some observations which found doubtful:
>>
>> 1) We have got prints in ASYNC_FINISH case, before getting print in
>> ASYNC_PAUSE case. Attaching the log also, so you can understand easily.
>> 2) Shown below the code snippet which we have written to provide a write
>> on fd.
>>
>> if ((waitctx = ASYNC_get_wait_ctx((ASYNC_JOB *)job)) == NULL) {
>>         printf("In dynamic engine | waitctx == NULL : %d\n", __LINE__);
>>         return ret;
>>     }
>>
>>     printf("\n----- In dynamic engine | After pausing | job is %lx |
>> waitctx in resume job %lx |-----\n", job, waitctx);
>>
>>         if ((ret = ASYNC_WAIT_CTX_get_fd(waitctx, engine_id, &efd,
>>                               &custom)) > 0) {
>>         if (write(efd, &buf, sizeof(uint64_t)) == -1) {
>>             printf("\nFailed to write\n");
>>         }
>>     }
>>
>> Here waitctx is getting NULL when we tried to fetch waitctx using
>> ASYNC_get_wait_ctx(). We have printed data of sizeof(ASYNC_JOB) ie.1176
>> bytes contained in the job address from the engine,  we got correct data
>> before calling ASYNC_pause() and but got half data zero data when we tried
>> to access the same address after ASYNC_pause().
>>
>> Attaching both job structure contents before and after calling
>> ASYNC_pause(). Also, we got the correct data in the same address when we
>> have printed from ssl_start_async_job() before polling starts, where we
>> have started the async_job
>> .
>> The prints starting with "In dynamic engine" are prints inside the
>> engine, rest prints are from ss/ssl_lib.c. Kindly check this and please
>> point out if anything is wrong somewhere. Thanks in advance.
>>
>>
>> On Sun, Jan 6, 2019 at 10:30 AM Ananthu Unnikrishnan <
>> ananthuu741 at gmail.com> wrote:
>>
>>> Hi all,
>>>
>>>        We have implemented a dynamic engine and tested in the async mode
>>> using OpenSSL speed command. But in a real network scenario, we have seen
>>> only starting the async_job(in file ssl/ssl_lib.c, function:
>>> ssl_start_async_job) in the OpenSSL. We haven't seen polling async_fd's for
>>> resuming the job as in apps/speed.c(in speed command case).
>>>         So can anyone please suggest any solution for resuming the
>>> async_jobs in real network scenario? Thanks in advance.
>>>
>>>
>>>
>>>
>>
>> --
>> With best Regards,
>>
>>          Ananthu
>>
>>
>>
>
> --
> With best Regards,
>
>          Ananthu
>
>
>

-- 
With best Regards,

         Ananthu
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