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Re: [PATCH 2 of 2] SSL: SSL_sendfile() support with kernel TLS

Maxim Dounin
November 24, 2022 01:32PM
Hello!

On Thu, Nov 24, 2022 at 01:21:51PM +0400, Sergey Kandaurov wrote:

> > On 27 Sep 2021, at 17:18, Maxim Dounin <mdounin@mdounin.ru> wrote:
> >
> > # HG changeset patch
> > # User Maxim Dounin <mdounin@mdounin.ru>
> > # Date 1632717779 -10800
> > # Mon Sep 27 07:42:59 2021 +0300
> > # Node ID ff514bf17f7f2257dcf036c5c973b74672cefa9a
> > # Parent 8f0fd60c33c106fba5f1ce3cafe990f15fcccc0c
> > SSL: SSL_sendfile() support with kernel TLS.
> >
> > Requires OpenSSL 3.0 compiled with "enable-ktls" option. Further, KTLS
> > needs to be enabled in kernel, and in OpenSSL, either via OpenSSL
> > configuration file or with "ssl_conf_command Options KTLS;" in nginx
> > configuration.
> >
> > On FreeBSD, kernel TLS is available starting with FreeBSD 13.0, and
> > can be enabled with "sysctl kern.ipc.tls.enable=1" and "kldload ktls_ocf".
> >
> > On Linux, kernel TLS is available starting with kernel 4.13 (at least 5.2
> > is recommended), and needs kernel compiled with CONFIG_TLS=y (with
> > CONFIG_TLS=m, which is used at least on Ubuntu 21.04 by default,
> > the tls module needs to be loaded with "modprobe tls").
> >
> > diff --git a/src/event/ngx_event_openssl.c b/src/event/ngx_event_openssl.c
>
> [..]
>
> > @@ -2882,6 +2937,150 @@ ngx_ssl_write_early(ngx_connection_t *c,
> > #endif
> >
> >
> > +static ssize_t
> > +ngx_ssl_sendfile(ngx_connection_t *c, ngx_buf_t *file, size_t size)
> > +{
> > +#ifdef BIO_get_ktls_send
> > +
> > + int sslerr;
> > + ssize_t n;
> > + ngx_err_t err;
> > +
> > + ngx_ssl_clear_error(c->log);
> > +
> > + ngx_log_debug2(NGX_LOG_DEBUG_EVENT, c->log, 0,
> > + "SSL to sendfile: @%O %uz",
> > + file->file_pos, size);
> > +
> > + ngx_set_errno(0);
> > +
> > + n = SSL_sendfile(c->ssl->connection, file->file->fd, file->file_pos,
> > + size, 0);
> > +
> > + ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0, "SSL_sendfile: %d", n);
> > +
>
> Hello,
>
> looks like a wrong format specifier slipped through review.
> Patch to address this:
>
> # HG changeset patch
> # User Sergey Kandaurov <pluknet@nginx.com>
> # Date 1669241969 -14400
> # Thu Nov 24 02:19:29 2022 +0400
> # Node ID 66ad8bd4b9e4347bda8fe64423632ded19093db2
> # Parent 75bfb3a97ca3d6292fb7877b89bb46720c15da80
> SSL: fixed debug logging of SSL_sendfile() return value.
>
> diff --git a/src/event/ngx_event_openssl.c b/src/event/ngx_event_openssl.c
> --- a/src/event/ngx_event_openssl.c
> +++ b/src/event/ngx_event_openssl.c
> @@ -3020,7 +3020,7 @@ ngx_ssl_sendfile(ngx_connection_t *c, ng
> n = SSL_sendfile(c->ssl->connection, file->file->fd, file->file_pos,
> size, flags);
>
> - ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0, "SSL_sendfile: %d", n);
> + ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0, "SSL_sendfile: %z", n);
>
> if (n > 0) {
>
>

Looks good.

--
Maxim Dounin
http://mdounin.ru/
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Subject Author Views Posted

[PATCH 0 of 2] KTLS / SSL_sendfile() support

Maxim Dounin 886 September 27, 2021 10:06AM

[PATCH 1 of 2] Style: added missing "static" specifiers

Maxim Dounin 120 September 27, 2021 10:06AM

[PATCH 2 of 2] SSL: SSL_sendfile() support with kernel TLS

Maxim Dounin 160 September 27, 2021 10:06AM

Re: [PATCH 2 of 2] SSL: SSL_sendfile() support with kernel TLS

Sergey Kandaurov 211 October 18, 2021 11:28AM

Re: [PATCH 2 of 2] SSL: SSL_sendfile() support with kernel TLS

Sergey Kandaurov 101 October 18, 2021 06:10PM

Re: [PATCH 2 of 2] SSL: SSL_sendfile() support with kernel TLS

Maxim Dounin 101 October 18, 2021 09:56PM

Re: [PATCH 2 of 2] SSL: SSL_sendfile() support with kernel TLS

Sergey Kandaurov 133 October 19, 2021 06:50AM

Re: [PATCH 2 of 2] SSL: SSL_sendfile() support with kernel TLS

Sergey Kandaurov 26 November 24, 2022 04:22AM

Re: [PATCH 2 of 2] SSL: SSL_sendfile() support with kernel TLS

Maxim Dounin 31 November 24, 2022 01:32PM

Re: [PATCH 0 of 2] KTLS / SSL_sendfile() support

Sergey Kandaurov 99 October 12, 2021 12:50PM

Re: [PATCH 0 of 2] KTLS / SSL_sendfile() support

Maxim Dounin 171 October 13, 2021 09:28AM



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