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List:       openssl-users
Subject:    OpenSSL 3 TLS cipher pipelining support with providers
From:       Ramkumar Balu <rbalu () marvell ! com>
Date:       2022-01-07 12:49:06
Message-ID: DM5PR1801MB20741FCA560422B7737C296CB04D9 () DM5PR1801MB2074 ! namprd18 ! prod ! outlook ! com
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Greetings,

Is there any specific reason why pipelining is not supported with providers=
?
I can see below code in ssl/record/ssl3_record.c

        if (provided) {
            int outlen;

            /* Provided cipher - we do not support pipelining on this path =
*/
            if (n_recs > 1)  {
                SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
                return 0;
            }

As a provider author, I'm trying to figure out a way to support pipelining =
in the implementation. Is there a future plan to add pipeline support in pr=
ovider framework?

Thanks,
Ramkumar Balu


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<p class="MsoNormal"><span style="font-size:12.0pt">Greetings,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt"><o:p>&nbsp;</o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt">Is there any specific reason why \
pipelining is not supported with providers? <o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt">I can see below code in \
ssl/record/ssl3_record.c<o:p></o:p></span></p> <p class="MsoNormal"><span \
style="font-size:12.0pt"><o:p>&nbsp;</o:p></span></p> <p class="MsoNormal"><span \
style="font-size:12.0pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; if (provided) \
{<o:p></o:p></span></p> <p class="MsoNormal"><span \
style="font-size:12.0pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; \
int outlen;<o:p></o:p></span></p> <p class="MsoNormal"><span \
style="font-size:12.0pt"><o:p>&nbsp;</o:p></span></p> <p class="MsoNormal"><span \
style="font-size:12.0pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; \
/* Provided cipher - we do not support pipelining on this path \
*/<o:p></o:p></span></p> <p class="MsoNormal"><span \
style="font-size:12.0pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; \
if (n_recs &gt; 1)&nbsp; {<o:p></o:p></span></p> <p class="MsoNormal"><span \
style="font-size:12.0pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; \
SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);<o:p></o:p></span></p> <p \
class="MsoNormal"><span \
style="font-size:12.0pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; \
return 0;<o:p></o:p></span></p> <p class="MsoNormal"><span \
style="font-size:12.0pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; \
}<o:p></o:p></span></p> <p class="MsoNormal"><span \
style="font-size:12.0pt"><o:p>&nbsp;</o:p></span></p> <p class="MsoNormal"><span \
style="font-size:12.0pt">As a provider author, I&#8217;m trying to figure out a way \
to support pipelining in the implementation. Is there a future plan to add pipeline \
support in provider framework?<o:p></o:p></span></p> <p class="MsoNormal"><span \
style="font-size:12.0pt"><o:p>&nbsp;</o:p></span></p> <p class="MsoNormal"><span \
style="font-size:12.0pt">Thanks,<o:p></o:p></span></p> <p class="MsoNormal"><span \
style="font-size:12.0pt">Ramkumar Balu<o:p></o:p></span></p> <p \
class="MsoNormal"><o:p>&nbsp;</o:p></p> </div>
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