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OpenSSL: Support for kernel TLS offload (KTLS)

Browse source 
This merges upstream patches from OpenSSL's master branch to add
KTLS infrastructure for TLS 1.0-1.3 including both RX and TX
offload and SSL_sendfile support on both Linux and FreeBSD.

Note that TLS 1.3 only supports TX offload.

A new WITH/WITHOUT_OPENSSL_KTLS determines if OpenSSL is built with
KTLS support.  It defaults to enabled on amd64 and disabled on all
other architectures.

Reviewed by:	jkim (earlier version)
Approved by:	secteam
Obtained from:	OpenSSL (patches from master)
MFC after:	1 week
Relnotes:	yes
Sponsored by:	Netflix
Differential Revision:	https://reviews.freebsd.org/D28273
This commit is contained in:
John Baldwin 2021-01-15 16:17:31 -08:00
parent 9a0a48b12d
commit aa906e2a49
41 changed files with 1465 additions and 91 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

5
crypto/openssl/CHANGES
View file

@ -390,6 +390,11 @@
necessary to configure just to create a source distribution.
[Richard Levitte]
*) Added support for Linux Kernel TLS data-path. The Linux Kernel data-path
improves application performance by removing data copies and providing
applications with zero-copy system calls such as sendfile and splice.
[Boris Pismenny]
Changes between 1.1.1 and 1.1.1a [20 Nov 2018]
*) Timing vulnerability in DSA signature generation

29
crypto/openssl/Configure
View file

@ -387,6 +387,7 @@ my @disablables = (
"heartbeats",
"hw(-.+)?",
"idea",
"ktls",
"makedepend",
"md2",
"md4",
@ -474,6 +475,7 @@ our %disabled = ( # "what" => "comment"
"weak-ssl-ciphers" => "default",
"zlib" => "default",
"zlib-dynamic" => "default",
"ktls" => "default",
);
# Note: => pair form used for aesthetics, not to truly make a hash table
@ -1580,6 +1582,33 @@ unless ($disabled{devcryptoeng}) {
}
}
unless ($disabled{ktls}) {
$config{ktls}="";
if ($target =~ m/^linux/) {
my $usr = "/usr/$config{cross_compile_prefix}";
chop($usr);
if ($config{cross_compile_prefix} eq "") {
$usr = "/usr";
}
my $minver = (4 << 16) + (13 << 8) + 0;
my @verstr = split(" ",`cat $usr/include/linux/version.h | grep LINUX_VERSION_CODE`);
if ($verstr[2] < $minver) {
disable('too-old-kernel', 'ktls');
}
} elsif ($target =~ m/^BSD/) {
my $cc = $config{CROSS_COMPILE}.$config{CC};
system("printf '#include <sys/types.h>\n#include <sys/ktls.h>' | $cc -E - >/dev/null 2>&1");
if ($? != 0) {
disable('too-old-freebsd', 'ktls');
}
} else {
disable('not-linux-or-freebsd', 'ktls');
}
}
push @{$config{openssl_other_defines}}, "OPENSSL_NO_KTLS" if ($disabled{ktls});
# Get the extra flags used when building shared libraries and modules. We
# do this late because some of them depend on %disabled.

9
crypto/openssl/INSTALL
View file

@ -262,6 +262,15 @@
Don't build the AFALG engine. This option will be forced if
on a platform that does not support AFALG.
enable-ktls
Build with Kernel TLS support. This option will enable the
use of the Kernel TLS data-path, which can improve
performance and allow for the use of sendfile and splice
system calls on TLS sockets. The Kernel may use TLS
accelerators if any are available on the system.
This option will be forced off on systems that do not support
the Kernel TLS data-path.
enable-asan
Build with the Address sanitiser. This is a developer option
only. It may not work on all platforms and should never be

6
crypto/openssl/apps/s_client.c
View file

@ -3282,6 +3282,12 @@ static void print_stuff(BIO *bio, SSL *s, int full)
BIO_printf(bio, "Expansion: %s\n",
expansion ? SSL_COMP_get_name(expansion) : "NONE");
#endif
#ifndef OPENSSL_NO_KTLS
if (BIO_get_ktls_send(SSL_get_wbio(s)))
BIO_printf(bio_err, "Using Kernel TLS for sending\n");
if (BIO_get_ktls_recv(SSL_get_rbio(s)))
BIO_printf(bio_err, "Using Kernel TLS for receiving\n");
#endif
#ifdef SSL_DEBUG
{

6
crypto/openssl/apps/s_server.c
View file

@ -2923,6 +2923,12 @@ static void print_connection_info(SSL *con)
}
OPENSSL_free(exportedkeymat);
}
#ifndef OPENSSL_NO_KTLS
if (BIO_get_ktls_send(SSL_get_wbio(con)))
BIO_printf(bio_err, "Using Kernel TLS for sending\n");
if (BIO_get_ktls_recv(SSL_get_rbio(con)))
BIO_printf(bio_err, "Using Kernel TLS for receiving\n");
#endif
(void)BIO_flush(bio_s_out);
}

12
crypto/openssl/crypto/bio/b_sock2.c
View file

@ -12,6 +12,7 @@
#include <errno.h>
#include "bio_local.h"
#include "internal/ktls.h"
#include <openssl/err.h>
@ -50,6 +51,17 @@ int BIO_socket(int domain, int socktype, int protocol, int options)
BIOerr(BIO_F_BIO_SOCKET, BIO_R_UNABLE_TO_CREATE_SOCKET);
return INVALID_SOCKET;
}
# ifndef OPENSSL_NO_KTLS
{
/*
* The new socket is created successfully regardless of ktls_enable.
* ktls_enable doesn't change any functionality of the socket, except
* changing the setsockopt to enable the processing of ktls_start.
* Thus, it is not a problem to call it for non-TLS sockets.
*/
ktls_enable(sock);
}
# endif
return sock;
}

46
crypto/openssl/crypto/bio/bss_conn.c
View file

@ -11,6 +11,7 @@
#include <errno.h>
#include "bio_local.h"
#include "internal/ktls.h"
#ifndef OPENSSL_NO_SOCK
@ -20,6 +21,9 @@ typedef struct bio_connect_st {
char *param_hostname;
char *param_service;
int connect_mode;
# ifndef OPENSSL_NO_KTLS
unsigned char record_type;
# endif
BIO_ADDRINFO *addr_first;
const BIO_ADDRINFO *addr_iter;
@ -320,7 +324,12 @@ static int conn_read(BIO *b, char *out, int outl)
if (out != NULL) {
clear_socket_error();
ret = readsocket(b->num, out, outl);
# ifndef OPENSSL_NO_KTLS
if (BIO_get_ktls_recv(b))
ret = ktls_read_record(b->num, out, outl);
else
# endif
ret = readsocket(b->num, out, outl);
BIO_clear_retry_flags(b);
if (ret <= 0) {
if (BIO_sock_should_retry(ret))
@ -345,7 +354,16 @@ static int conn_write(BIO *b, const char *in, int inl)
}
clear_socket_error();
ret = writesocket(b->num, in, inl);
# ifndef OPENSSL_NO_KTLS
if (BIO_should_ktls_ctrl_msg_flag(b)) {
ret = ktls_send_ctrl_message(b->num, data->record_type, in, inl);
if (ret >= 0) {
ret = inl;
BIO_clear_ktls_ctrl_msg_flag(b);
}
} else
# endif
ret = writesocket(b->num, in, inl);
BIO_clear_retry_flags(b);
if (ret <= 0) {
if (BIO_sock_should_retry(ret))
@ -361,6 +379,9 @@ static long conn_ctrl(BIO *b, int cmd, long num, void *ptr)
const char **pptr = NULL;
long ret = 1;
BIO_CONNECT *data;
# ifndef OPENSSL_NO_KTLS
ktls_crypto_info_t *crypto_info;
# endif
data = (BIO_CONNECT *)b->ptr;
@ -520,6 +541,27 @@ static long conn_ctrl(BIO *b, int cmd, long num, void *ptr)
case BIO_CTRL_EOF:
ret = (b->flags & BIO_FLAGS_IN_EOF) != 0 ? 1 : 0;
break;
# ifndef OPENSSL_NO_KTLS
case BIO_CTRL_SET_KTLS:
crypto_info = (ktls_crypto_info_t *)ptr;
ret = ktls_start(b->num, crypto_info, num);
if (ret)
BIO_set_ktls_flag(b, num);
break;
case BIO_CTRL_GET_KTLS_SEND:
return BIO_should_ktls_flag(b, 1);
case BIO_CTRL_GET_KTLS_RECV:
return BIO_should_ktls_flag(b, 0);
case BIO_CTRL_SET_KTLS_TX_SEND_CTRL_MSG:
BIO_set_ktls_ctrl_msg_flag(b);
data->record_type = num;
ret = 0;
break;
case BIO_CTRL_CLEAR_KTLS_TX_CTRL_MSG:
BIO_clear_ktls_ctrl_msg_flag(b);
ret = 0;
break;
# endif
default:
ret = 0;
break;

57
crypto/openssl/crypto/bio/bss_sock.c
View file

@ -11,6 +11,7 @@
#include <errno.h>
#include "bio_local.h"
#include "internal/cryptlib.h"
#include "internal/ktls.h"
#ifndef OPENSSL_NO_SOCK
@ -64,6 +65,17 @@ BIO *BIO_new_socket(int fd, int close_flag)
if (ret == NULL)
return NULL;
BIO_set_fd(ret, fd, close_flag);
# ifndef OPENSSL_NO_KTLS
{
/*
* The new socket is created successfully regardless of ktls_enable.
* ktls_enable doesn't change any functionality of the socket, except
* changing the setsockopt to enable the processing of ktls_start.
* Thus, it is not a problem to call it for non-TLS sockets.
*/
ktls_enable(fd);
}
# endif
return ret;
}
@ -96,7 +108,12 @@ static int sock_read(BIO *b, char *out, int outl)
if (out != NULL) {
clear_socket_error();
ret = readsocket(b->num, out, outl);
# ifndef OPENSSL_NO_KTLS
if (BIO_get_ktls_recv(b))
ret = ktls_read_record(b->num, out, outl);
else
# endif
ret = readsocket(b->num, out, outl);
BIO_clear_retry_flags(b);
if (ret <= 0) {
if (BIO_sock_should_retry(ret))
@ -110,10 +127,20 @@ static int sock_read(BIO *b, char *out, int outl)
static int sock_write(BIO *b, const char *in, int inl)
{
int ret;
int ret = 0;
clear_socket_error();
ret = writesocket(b->num, in, inl);
# ifndef OPENSSL_NO_KTLS
if (BIO_should_ktls_ctrl_msg_flag(b)) {
unsigned char record_type = (intptr_t)b->ptr;
ret = ktls_send_ctrl_message(b->num, record_type, in, inl);
if (ret >= 0) {
ret = inl;
BIO_clear_ktls_ctrl_msg_flag(b);
}
} else
# endif
ret = writesocket(b->num, in, inl);
BIO_clear_retry_flags(b);
if (ret <= 0) {
if (BIO_sock_should_retry(ret))
@ -126,6 +153,9 @@ static long sock_ctrl(BIO *b, int cmd, long num, void *ptr)
{
long ret = 1;
int *ip;
# ifndef OPENSSL_NO_KTLS
ktls_crypto_info_t *crypto_info;
# endif
switch (cmd) {
case BIO_C_SET_FD:
@ -153,6 +183,27 @@ static long sock_ctrl(BIO *b, int cmd, long num, void *ptr)
case BIO_CTRL_FLUSH:
ret = 1;
break;
# ifndef OPENSSL_NO_KTLS
case BIO_CTRL_SET_KTLS:
crypto_info = (ktls_crypto_info_t *)ptr;
ret = ktls_start(b->num, crypto_info, num);
if (ret)
BIO_set_ktls_flag(b, num);
break;
case BIO_CTRL_GET_KTLS_SEND:
return BIO_should_ktls_flag(b, 1);
case BIO_CTRL_GET_KTLS_RECV:
return BIO_should_ktls_flag(b, 0);
case BIO_CTRL_SET_KTLS_TX_SEND_CTRL_MSG:
BIO_set_ktls_ctrl_msg_flag(b);
b->ptr = (void *)num;
ret = 0;
break;
case BIO_CTRL_CLEAR_KTLS_TX_CTRL_MSG:
BIO_clear_ktls_ctrl_msg_flag(b);
ret = 0;
break;
# endif
case BIO_CTRL_EOF:
ret = (b->flags & BIO_FLAGS_IN_EOF) != 0 ? 1 : 0;
break;

1
crypto/openssl/crypto/err/openssl.txt
View file

@ -1318,6 +1318,7 @@ SSL_F_SSL_RENEGOTIATE:516:SSL_renegotiate
SSL_F_SSL_RENEGOTIATE_ABBREVIATED:546:SSL_renegotiate_abbreviated
SSL_F_SSL_SCAN_CLIENTHELLO_TLSEXT:320:*
SSL_F_SSL_SCAN_SERVERHELLO_TLSEXT:321:*
SSL_F_SSL_SENDFILE:639:SSL_sendfile
SSL_F_SSL_SESSION_DUP:348:ssl_session_dup
SSL_F_SSL_SESSION_NEW:189:SSL_SESSION_new
SSL_F_SSL_SESSION_PRINT_FP:190:SSL_SESSION_print_fp

8
crypto/openssl/crypto/evp/e_aes.c
View file

@ -2895,6 +2895,14 @@ static int aes_gcm_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
memcpy(ptr, c->buf, arg);
return 1;
case EVP_CTRL_GET_IV:
if (gctx->iv_gen != 1)
return 0;
if (gctx->ivlen != arg)
return 0;
memcpy(ptr, gctx->iv, arg);
return 1;
case EVP_CTRL_GCM_SET_IV_FIXED:
/* Special case: -1 length restores whole IV */
if (arg == -1) {

21
crypto/openssl/doc/man3/BIO_ctrl.pod
View file

@ -5,7 +5,8 @@
BIO_ctrl, BIO_callback_ctrl, BIO_ptr_ctrl, BIO_int_ctrl, BIO_reset,
BIO_seek, BIO_tell, BIO_flush, BIO_eof, BIO_set_close, BIO_get_close,
BIO_pending, BIO_wpending, BIO_ctrl_pending, BIO_ctrl_wpending,
BIO_get_info_callback, BIO_set_info_callback, BIO_info_cb
BIO_get_info_callback, BIO_set_info_callback, BIO_info_cb, BIO_get_ktls_send,
BIO_get_ktls_recv
- BIO control operations
=head1 SYNOPSIS
@ -34,6 +35,9 @@ BIO_get_info_callback, BIO_set_info_callback, BIO_info_cb
int BIO_get_info_callback(BIO *b, BIO_info_cb **cbp);
int BIO_set_info_callback(BIO *b, BIO_info_cb *cb);
int BIO_get_ktls_send(BIO *b);
int BIO_get_ktls_recv(BIO *b);
=head1 DESCRIPTION
BIO_ctrl(), BIO_callback_ctrl(), BIO_ptr_ctrl() and BIO_int_ctrl()
@ -72,6 +76,11 @@ Not all BIOs support these calls. BIO_ctrl_pending() and BIO_ctrl_wpending()
return a size_t type and are functions, BIO_pending() and BIO_wpending() are
macros which call BIO_ctrl().
BIO_get_ktls_send() returns 1 if the BIO is using the Kernel TLS data-path for
sending. Otherwise, it returns zero.
BIO_get_ktls_recv() returns 1 if the BIO is using the Kernel TLS data-path for
receiving. Otherwise, it returns zero.
=head1 RETURN VALUES
BIO_reset() normally returns 1 for success and 0 or -1 for failure. File
@ -92,6 +101,11 @@ BIO_get_close() returns the close flag value: BIO_CLOSE or BIO_NOCLOSE.
BIO_pending(), BIO_ctrl_pending(), BIO_wpending() and BIO_ctrl_wpending()
return the amount of pending data.
BIO_get_ktls_send() returns 1 if the BIO is using the Kernel TLS data-path for
sending. Otherwise, it returns zero.
BIO_get_ktls_recv() returns 1 if the BIO is using the Kernel TLS data-path for
receiving. Otherwise, it returns zero.
=head1 NOTES
BIO_flush(), because it can write data may return 0 or -1 indicating
@ -124,6 +138,11 @@ particular a return value of 0 can be returned if an operation is not
supported, if an error occurred, if EOF has not been reached and in
the case of BIO_seek() on a file BIO for a successful operation.
=head1 HISTORY
The BIO_get_ktls_send() and BIO_get_ktls_recv() functions were added in
OpenSSL 3.0.0.
=head1 COPYRIGHT
Copyright 2000-2020 The OpenSSL Project Authors. All Rights Reserved.

17
crypto/openssl/doc/man3/SSL_CTX_set_mode.pod
View file

@ -114,6 +114,22 @@ enables this behaviour to allow interoperability with such broken
implementations. Please note that setting this option breaks interoperability
with correct implementations. This option only applies to DTLS over SCTP.
=item SSL_MODE_NO_KTLS_TX
Disable the use of the kernel TLS egress data-path.
By default kernel TLS is enabled if it is supported by the negotiated ciphersuites
and extensions and OpenSSL has been compiled with support for it.
The kernel TLS data-path implements the record layer,
and the crypto algorithm. The kernel will utilize the best hardware
available for crypto. Using the kernel data-path should reduce the memory
footprint of OpenSSL because no buffering is required. Also, the throughput
should improve because data copy is avoided when user data is encrypted into
kernel memory instead of the usual encrypt than copy to kernel.
Kernel TLS might not support all the features of OpenSSL. For instance,
renegotiation, and setting the maximum fragment size is not possible as of
Linux 4.20.
=back
All modes are off by default except for SSL_MODE_AUTO_RETRY which is on by
@ -134,6 +150,7 @@ L<SSL_write(3)>, L<SSL_get_error(3)>
=head1 HISTORY
SSL_MODE_ASYNC was added in OpenSSL 1.1.0.
SSL_MODE_NO_KTLS_TX was first added to OpenSSL 3.0.0.
=head1 COPYRIGHT

10
crypto/openssl/doc/man3/SSL_CTX_set_record_padding_callback.pod
View file

@ -16,7 +16,7 @@ SSL_set_block_padding - install callback to specify TLS 1.3 record padding
#include <openssl/ssl.h>
void SSL_CTX_set_record_padding_callback(SSL_CTX *ctx, size_t (*cb)(SSL *s, int type, size_t len, void *arg));
void SSL_set_record_padding_callback(SSL *ssl, size_t (*cb)(SSL *s, int type, size_t len, void *arg));
int SSL_set_record_padding_callback(SSL *ssl, size_t (*cb)(SSL *s, int type, size_t len, void *arg));
void SSL_CTX_set_record_padding_callback_arg(SSL_CTX *ctx, void *arg);
void *SSL_CTX_get_record_padding_callback_arg(const SSL_CTX *ctx);
@ -32,6 +32,8 @@ SSL_set_block_padding - install callback to specify TLS 1.3 record padding
SSL_CTX_set_record_padding_callback() or SSL_set_record_padding_callback()
can be used to assign a callback function I<cb> to specify the padding
for TLS 1.3 records. The value set in B<ctx> is copied to a new SSL by SSL_new().
Kernel TLS is not possible if the record padding callback is set, and the callback
function cannot be set if Kernel TLS is already configured for the current SSL object.
SSL_CTX_set_record_padding_callback_arg() and SSL_set_record_padding_callback_arg()
assign a value B<arg> that is passed to the callback when it is invoked. The value
@ -64,6 +66,9 @@ indicates no padding will be added. A return value that causes the record to
exceed the maximum record size (SSL3_RT_MAX_PLAIN_LENGTH) will pad out to the
maximum record size.
The SSL_CTX_get_record_padding_callback_arg() function returns 1 on success or 0 if
the callback function is not set because Kernel TLS is configured for the SSL object.
=head1 NOTES
The default behavior is to add no padding to the record.
@ -84,6 +89,9 @@ L<ssl(7)>, L<SSL_new(3)>
The record padding API was added for TLS 1.3 support in OpenSSL 1.1.1.
The return type of SSL_CTX_set_record_padding_callback() function was
changed to int in OpenSSL 3.0.
=head1 COPYRIGHT
Copyright 2017-2019 The OpenSSL Project Authors. All Rights Reserved.

31
crypto/openssl/doc/man3/SSL_write.pod
View file

@ -2,12 +2,13 @@
=head1 NAME
SSL_write_ex, SSL_write - write bytes to a TLS/SSL connection
SSL_write_ex, SSL_write, SSL_sendfile - write bytes to a TLS/SSL connection
=head1 SYNOPSIS
#include <openssl/ssl.h>
ossl_ssize_t SSL_sendfile(SSL *s, int fd, off_t offset, size_t size, int flags);
int SSL_write_ex(SSL *s, const void *buf, size_t num, size_t *written);
int SSL_write(SSL *ssl, const void *buf, int num);
@ -17,6 +18,14 @@ SSL_write_ex() and SSL_write() write B<num> bytes from the buffer B<buf> into
the specified B<ssl> connection. On success SSL_write_ex() will store the number
of bytes written in B<*written>.
SSL_sendfile() writes B<size> bytes from offset B<offset> in the file
descriptor B<fd> to the specified SSL connection B<s>. This function provides
efficient zero-copy semantics. SSL_sendfile() is available only when
Kernel TLS is enabled, which can be checked by calling BIO_get_ktls_send().
It is provided here to allow users to maintain the same interface.
The meaning of B<flags> is platform dependent.
Currently, under Linux it is ignored.
=head1 NOTES
In the paragraphs below a "write function" is defined as one of either
@ -104,17 +113,35 @@ You should instead call SSL_get_error() to find out if it's retryable.
=back
For SSL_sendfile(), the following return values can occur:
=over 4
=item Z<>>= 0
The write operation was successful, the return value is the number
of bytes of the file written to the TLS/SSL connection.
=item E<lt> 0
The write operation was not successful, because either the connection was
closed, an error occured or action must be taken by the calling process.
Call SSL_get_error() with the return value to find out the reason.
=back
=head1 SEE ALSO
L<SSL_get_error(3)>, L<SSL_read_ex(3)>, L<SSL_read(3)>
L<SSL_CTX_set_mode(3)>, L<SSL_CTX_new(3)>,
L<SSL_connect(3)>, L<SSL_accept(3)>
L<SSL_set_connect_state(3)>,
L<SSL_set_connect_state(3)>, L<BIO_ctrl(3)>,
L<ssl(7)>, L<bio(7)>
=head1 HISTORY
The SSL_write_ex() function was added in OpenSSL 1.1.1.
The SSL_sendfile() function was added in OpenSSL 3.0.0.
=head1 COPYRIGHT

3
crypto/openssl/engines/e_afalg.c
View file

@ -407,7 +407,7 @@ static int afalg_start_cipher_sk(afalg_ctx *actx, const unsigned char *in,
size_t inl, const unsigned char *iv,
unsigned int enc)
{
struct msghdr msg = { 0 };
struct msghdr msg;
struct cmsghdr *cmsg;
struct iovec iov;
ssize_t sbytes;
@ -416,6 +416,7 @@ static int afalg_start_cipher_sk(afalg_ctx *actx, const unsigned char *in,
# endif
char cbuf[CMSG_SPACE(ALG_IV_LEN(ALG_AES_IV_LEN)) + CMSG_SPACE(ALG_OP_LEN)];
memset(&msg, 0, sizeof(msg));
memset(cbuf, 0, sizeof(cbuf));
msg.msg_control = cbuf;
msg.msg_controllen = sizeof(cbuf);

39
crypto/openssl/include/internal/bio.h
View file

@ -7,6 +7,9 @@
* https://www.openssl.org/source/license.html
*/
#ifndef HEADER_INTERNAL_BIO_H
# define HEADER_INTERNAL_BIO_H
#include <openssl/bio.h>
struct bio_method_st {
@ -31,3 +34,39 @@ void bio_cleanup(void);
/* Old style to new style BIO_METHOD conversion functions */
int bwrite_conv(BIO *bio, const char *data, size_t datal, size_t *written);
int bread_conv(BIO *bio, char *data, size_t datal, size_t *read);
/* Changes to these internal BIOs must also update include/openssl/bio.h */
# define BIO_CTRL_SET_KTLS 72
# define BIO_CTRL_SET_KTLS_TX_SEND_CTRL_MSG 74
# define BIO_CTRL_CLEAR_KTLS_TX_CTRL_MSG 75
/*
* This is used with socket BIOs:
* BIO_FLAGS_KTLS_TX means we are using ktls with this BIO for sending.
* BIO_FLAGS_KTLS_TX_CTRL_MSG means we are about to send a ctrl message next.
* BIO_FLAGS_KTLS_RX means we are using ktls with this BIO for receiving.
*/
# define BIO_FLAGS_KTLS_TX 0x800
# define BIO_FLAGS_KTLS_TX_CTRL_MSG 0x1000
# define BIO_FLAGS_KTLS_RX 0x2000
/* KTLS related controls and flags */
# define BIO_set_ktls_flag(b, is_tx) \
BIO_set_flags(b, (is_tx) ? BIO_FLAGS_KTLS_TX : BIO_FLAGS_KTLS_RX)
# define BIO_should_ktls_flag(b, is_tx) \
BIO_test_flags(b, (is_tx) ? BIO_FLAGS_KTLS_TX : BIO_FLAGS_KTLS_RX)
# define BIO_set_ktls_ctrl_msg_flag(b) \
BIO_set_flags(b, BIO_FLAGS_KTLS_TX_CTRL_MSG)
# define BIO_should_ktls_ctrl_msg_flag(b) \
BIO_test_flags(b, BIO_FLAGS_KTLS_TX_CTRL_MSG)
# define BIO_clear_ktls_ctrl_msg_flag(b) \
BIO_clear_flags(b, BIO_FLAGS_KTLS_TX_CTRL_MSG)
# define BIO_set_ktls(b, keyblob, is_tx) \
BIO_ctrl(b, BIO_CTRL_SET_KTLS, is_tx, keyblob)
# define BIO_set_ktls_ctrl_msg(b, record_type) \
BIO_ctrl(b, BIO_CTRL_SET_KTLS_TX_SEND_CTRL_MSG, record_type, NULL)
# define BIO_clear_ktls_ctrl_msg(b) \
BIO_ctrl(b, BIO_CTRL_CLEAR_KTLS_TX_CTRL_MSG, 0, NULL)
#endif

403
crypto/openssl/include/internal/ktls.h Normal file
View file

@ -0,0 +1,403 @@
/*
* Copyright 2018 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the Apache License 2.0 (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
#if defined(OPENSSL_SYS_LINUX)
# ifndef OPENSSL_NO_KTLS
# include <linux/version.h>
# if LINUX_VERSION_CODE < KERNEL_VERSION(4, 13, 0)
# define OPENSSL_NO_KTLS
# ifndef PEDANTIC
# warning "KTLS requires Kernel Headers >= 4.13.0"
# warning "Skipping Compilation of KTLS"
# endif
# endif
# endif
#endif
#ifndef HEADER_INTERNAL_KTLS
# define HEADER_INTERNAL_KTLS
# ifndef OPENSSL_NO_KTLS
# if defined(__FreeBSD__)
# include <sys/types.h>
# include <sys/socket.h>
# include <sys/ktls.h>
# include <netinet/in.h>
# include <netinet/tcp.h>
# include "openssl/ssl3.h"
# ifndef TCP_RXTLS_ENABLE
# define OPENSSL_NO_KTLS_RX
# endif
# define OPENSSL_KTLS_AES_GCM_128
# define OPENSSL_KTLS_AES_GCM_256
# define OPENSSL_KTLS_TLS13
/*
* Only used by the tests in sslapitest.c.
*/
# define TLS_CIPHER_AES_GCM_128_REC_SEQ_SIZE 8
# define TLS_CIPHER_AES_GCM_256_REC_SEQ_SIZE 8
typedef struct tls_enable ktls_crypto_info_t;
/*
* FreeBSD does not require any additional steps to enable KTLS before
* setting keys.
*/
static ossl_inline int ktls_enable(int fd)
{
return 1;
}
/*
* The TCP_TXTLS_ENABLE socket option marks the outgoing socket buffer
* as using TLS. If successful, then data sent using this socket will
* be encrypted and encapsulated in TLS records using the tls_en
* provided here.
*
* The TCP_RXTLS_ENABLE socket option marks the incoming socket buffer
* as using TLS. If successful, then data received for this socket will
* be authenticated and decrypted using the tls_en provided here.
*/
static ossl_inline int ktls_start(int fd, ktls_crypto_info_t *tls_en, int is_tx)
{
if (is_tx)
return setsockopt(fd, IPPROTO_TCP, TCP_TXTLS_ENABLE,
tls_en, sizeof(*tls_en)) ? 0 : 1;
# ifndef OPENSSL_NO_KTLS_RX
return setsockopt(fd, IPPROTO_TCP, TCP_RXTLS_ENABLE, tls_en,
sizeof(*tls_en)) ? 0 : 1;
# else
return 0;
# endif
}
/*
* Send a TLS record using the tls_en provided in ktls_start and use
* record_type instead of the default SSL3_RT_APPLICATION_DATA.
* When the socket is non-blocking, then this call either returns EAGAIN or
* the entire record is pushed to TCP. It is impossible to send a partial
* record using this control message.
*/
static ossl_inline int ktls_send_ctrl_message(int fd, unsigned char record_type,
const void *data, size_t length)
{
struct msghdr msg = { 0 };
int cmsg_len = sizeof(record_type);
struct cmsghdr *cmsg;
char buf[CMSG_SPACE(cmsg_len)];
struct iovec msg_iov; /* Vector of data to send/receive into */
msg.msg_control = buf;
msg.msg_controllen = sizeof(buf);
cmsg = CMSG_FIRSTHDR(&msg);
cmsg->cmsg_level = IPPROTO_TCP;
cmsg->cmsg_type = TLS_SET_RECORD_TYPE;
cmsg->cmsg_len = CMSG_LEN(cmsg_len);
*((unsigned char *)CMSG_DATA(cmsg)) = record_type;
msg.msg_controllen = cmsg->cmsg_len;
msg_iov.iov_base = (void *)data;
msg_iov.iov_len = length;
msg.msg_iov = &msg_iov;
msg.msg_iovlen = 1;
return sendmsg(fd, &msg, 0);
}
# ifdef OPENSSL_NO_KTLS_RX
static ossl_inline int ktls_read_record(int fd, void *data, size_t length)
{
return -1;
}
# else /* !defined(OPENSSL_NO_KTLS_RX) */
/*
* Receive a TLS record using the tls_en provided in ktls_start. The
* kernel strips any explicit IV and authentication tag, but provides
* the TLS record header via a control message. If there is an error
* with the TLS record such as an invalid header, invalid padding, or
* authentication failure recvmsg() will fail with an error.
*/
static ossl_inline int ktls_read_record(int fd, void *data, size_t length)
{
struct msghdr msg = { 0 };
int cmsg_len = sizeof(struct tls_get_record);
struct tls_get_record *tgr;
struct cmsghdr *cmsg;
char buf[CMSG_SPACE(cmsg_len)];
struct iovec msg_iov; /* Vector of data to send/receive into */
int ret;
unsigned char *p = data;
const size_t prepend_length = SSL3_RT_HEADER_LENGTH;
if (length <= prepend_length) {
errno = EINVAL;
return -1;
}
msg.msg_control = buf;
msg.msg_controllen = sizeof(buf);
msg_iov.iov_base = p + prepend_length;
msg_iov.iov_len = length - prepend_length;
msg.msg_iov = &msg_iov;
msg.msg_iovlen = 1;
ret = recvmsg(fd, &msg, 0);
if (ret <= 0)
return ret;
if ((msg.msg_flags & (MSG_EOR | MSG_CTRUNC)) != MSG_EOR) {
errno = EMSGSIZE;
return -1;
}
if (msg.msg_controllen == 0) {
errno = EBADMSG;
return -1;
}
cmsg = CMSG_FIRSTHDR(&msg);
if (cmsg->cmsg_level != IPPROTO_TCP || cmsg->cmsg_type != TLS_GET_RECORD
|| cmsg->cmsg_len != CMSG_LEN(cmsg_len)) {
errno = EBADMSG;
return -1;
}
tgr = (struct tls_get_record *)CMSG_DATA(cmsg);
p[0] = tgr->tls_type;
p[1] = tgr->tls_vmajor;
p[2] = tgr->tls_vminor;
*(uint16_t *)(p + 3) = htons(ret);
return ret + prepend_length;
}
# endif /* OPENSSL_NO_KTLS_RX */
/*
* KTLS enables the sendfile system call to send data from a file over
* TLS.
*/
static ossl_inline ossl_ssize_t ktls_sendfile(int s, int fd, off_t off,
size_t size, int flags)
{
off_t sbytes;
int ret;
ret = sendfile(fd, s, off, size, NULL, &sbytes, flags);
if (ret == -1) {
if (errno == EAGAIN && sbytes != 0)
return sbytes;
return -1;
}
return sbytes;
}
# endif /* __FreeBSD__ */
# if defined(OPENSSL_SYS_LINUX)
# include <linux/tls.h>
# if LINUX_VERSION_CODE < KERNEL_VERSION(4, 17, 0)
# define OPENSSL_NO_KTLS_RX
# ifndef PEDANTIC
# warning "KTLS requires Kernel Headers >= 4.17.0 for receiving"
# warning "Skipping Compilation of KTLS receive data path"
# endif
# endif
# define OPENSSL_KTLS_AES_GCM_128
# if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 1, 0)
# define OPENSSL_KTLS_AES_GCM_256
# define OPENSSL_KTLS_TLS13
# if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 2, 0)
# define OPENSSL_KTLS_AES_CCM_128
# endif
# endif
# include <sys/sendfile.h>
# include <netinet/tcp.h>
# include <linux/socket.h>
# include "openssl/ssl3.h"
# include "openssl/tls1.h"
# include "openssl/evp.h"
# ifndef SOL_TLS
# define SOL_TLS 282
# endif
# ifndef TCP_ULP
# define TCP_ULP 31
# endif
# ifndef TLS_RX
# define TLS_RX 2
# endif
struct tls_crypto_info_all {
union {
# ifdef OPENSSL_KTLS_AES_GCM_128
struct tls12_crypto_info_aes_gcm_128 gcm128;
# endif
# ifdef OPENSSL_KTLS_AES_GCM_256
struct tls12_crypto_info_aes_gcm_256 gcm256;
# endif
# ifdef OPENSSL_KTLS_AES_CCM_128
struct tls12_crypto_info_aes_ccm_128 ccm128;
# endif
};
size_t tls_crypto_info_len;
};
typedef struct tls_crypto_info_all ktls_crypto_info_t;
/*
* When successful, this socket option doesn't change the behaviour of the
* TCP socket, except changing the TCP setsockopt handler to enable the
* processing of SOL_TLS socket options. All other functionality remains the
* same.
*/
static ossl_inline int ktls_enable(int fd)
{
return setsockopt(fd, SOL_TCP, TCP_ULP, "tls", sizeof("tls")) ? 0 : 1;
}
/*
* The TLS_TX socket option changes the send/sendmsg handlers of the TCP socket.
* If successful, then data sent using this socket will be encrypted and
* encapsulated in TLS records using the crypto_info provided here.
* The TLS_RX socket option changes the recv/recvmsg handlers of the TCP socket.
* If successful, then data received using this socket will be decrypted,
* authenticated and decapsulated using the crypto_info provided here.
*/
static ossl_inline int ktls_start(int fd, ktls_crypto_info_t *crypto_info,
int is_tx)
{
return setsockopt(fd, SOL_TLS, is_tx ? TLS_TX : TLS_RX,
crypto_info, crypto_info->tls_crypto_info_len) ? 0 : 1;
}
/*
* Send a TLS record using the crypto_info provided in ktls_start and use
* record_type instead of the default SSL3_RT_APPLICATION_DATA.
* When the socket is non-blocking, then this call either returns EAGAIN or
* the entire record is pushed to TCP. It is impossible to send a partial
* record using this control message.
*/
static ossl_inline int ktls_send_ctrl_message(int fd, unsigned char record_type,
const void *data, size_t length)
{
struct msghdr msg;
int cmsg_len = sizeof(record_type);
struct cmsghdr *cmsg;
union {
struct cmsghdr hdr;
char buf[CMSG_SPACE(sizeof(unsigned char))];
} cmsgbuf;
struct iovec msg_iov; /* Vector of data to send/receive into */
memset(&msg, 0, sizeof(msg));
msg.msg_control = cmsgbuf.buf;
msg.msg_controllen = sizeof(cmsgbuf.buf);
cmsg = CMSG_FIRSTHDR(&msg);
cmsg->cmsg_level = SOL_TLS;
cmsg->cmsg_type = TLS_SET_RECORD_TYPE;
cmsg->cmsg_len = CMSG_LEN(cmsg_len);
*((unsigned char *)CMSG_DATA(cmsg)) = record_type;
msg.msg_controllen = cmsg->cmsg_len;
msg_iov.iov_base = (void *)data;
msg_iov.iov_len = length;
msg.msg_iov = &msg_iov;
msg.msg_iovlen = 1;
return sendmsg(fd, &msg, 0);
}
/*
* KTLS enables the sendfile system call to send data from a file over TLS.
* @flags are ignored on Linux. (placeholder for FreeBSD sendfile)
* */
static ossl_inline ossl_ssize_t ktls_sendfile(int s, int fd, off_t off, size_t size, int flags)
{
return sendfile(s, fd, &off, size);
}
# ifdef OPENSSL_NO_KTLS_RX
static ossl_inline int ktls_read_record(int fd, void *data, size_t length)
{
return -1;
}
# else /* !defined(OPENSSL_NO_KTLS_RX) */
/*
* Receive a TLS record using the crypto_info provided in ktls_start.
* The kernel strips the TLS record header, IV and authentication tag,
* returning only the plaintext data or an error on failure.
* We add the TLS record header here to satisfy routines in rec_layer_s3.c
*/
static ossl_inline int ktls_read_record(int fd, void *data, size_t length)
{
struct msghdr msg;
struct cmsghdr *cmsg;
union {
struct cmsghdr hdr;
char buf[CMSG_SPACE(sizeof(unsigned char))];
} cmsgbuf;
struct iovec msg_iov;
int ret;
unsigned char *p = data;
const size_t prepend_length = SSL3_RT_HEADER_LENGTH;
if (length < prepend_length + EVP_GCM_TLS_TAG_LEN) {
errno = EINVAL;
return -1;
}
memset(&msg, 0, sizeof(msg));
msg.msg_control = cmsgbuf.buf;
msg.msg_controllen = sizeof(cmsgbuf.buf);
msg_iov.iov_base = p + prepend_length;
msg_iov.iov_len = length - prepend_length - EVP_GCM_TLS_TAG_LEN;
msg.msg_iov = &msg_iov;
msg.msg_iovlen = 1;
ret = recvmsg(fd, &msg, 0);
if (ret < 0)
return ret;
if (msg.msg_controllen > 0) {
cmsg = CMSG_FIRSTHDR(&msg);
if (cmsg->cmsg_type == TLS_GET_RECORD_TYPE) {
p[0] = *((unsigned char *)CMSG_DATA(cmsg));
p[1] = TLS1_2_VERSION_MAJOR;
p[2] = TLS1_2_VERSION_MINOR;
/* returned length is limited to msg_iov.iov_len above */
p[3] = (ret >> 8) & 0xff;
p[4] = ret & 0xff;
ret += prepend_length;
}
}
return ret;
}
# endif /* OPENSSL_NO_KTLS_RX */
# endif /* OPENSSL_SYS_LINUX */
# endif /* OPENSSL_NO_KTLS */
#endif /* HEADER_INTERNAL_KTLS */

20
crypto/openssl/include/openssl/bio.h
View file

@ -141,6 +141,26 @@ extern "C" {
# define BIO_CTRL_DGRAM_SET_PEEK_MODE 71
/*
* internal BIO see include/internal/bio.h:
* # define BIO_CTRL_SET_KTLS_SEND 72
* # define BIO_CTRL_SET_KTLS_SEND_CTRL_MSG 74
* # define BIO_CTRL_CLEAR_KTLS_CTRL_MSG 75
*/
# define BIO_CTRL_GET_KTLS_SEND 73
# define BIO_CTRL_GET_KTLS_RECV 76
# ifndef OPENSSL_NO_KTLS
# define BIO_get_ktls_send(b) \
BIO_ctrl(b, BIO_CTRL_GET_KTLS_SEND, 0, NULL)
# define BIO_get_ktls_recv(b) \
BIO_ctrl(b, BIO_CTRL_GET_KTLS_RECV, 0, NULL)
# else
# define BIO_get_ktls_send(b) (0)
# define BIO_get_ktls_recv(b) (0)
# endif
/* modifiers */
# define BIO_FP_READ 0x02
# define BIO_FP_WRITE 0x04

1
crypto/openssl/include/openssl/err.h
View file

@ -169,6 +169,7 @@ typedef struct err_state_st {
# define SYS_F_STAT 22
# define SYS_F_FCNTL 23
# define SYS_F_FSTAT 24
# define SYS_F_SENDFILE 25
/* reasons */
# define ERR_R_SYS_LIB ERR_LIB_SYS/* 2 */

2
crypto/openssl/include/openssl/evp.h
View file

@ -352,6 +352,8 @@ int (*EVP_CIPHER_meth_get_ctrl(const EVP_CIPHER *cipher))(EVP_CIPHER_CTX *,
# define EVP_CTRL_SET_PIPELINE_INPUT_LENS 0x24
# define EVP_CTRL_GET_IVLEN 0x25
/* Get the IV used by the cipher */
# define EVP_CTRL_GET_IV 0x26
/* Padding modes */
#define EVP_PADDING_PKCS7 1

12
crypto/openssl/include/openssl/ssl.h
View file

@ -493,6 +493,10 @@ typedef int (*SSL_verify_cb)(int preverify_ok, X509_STORE_CTX *x509_ctx);
* Support Asynchronous operation
*/
# define SSL_MODE_ASYNC 0x00000100U
/*
* Don't use the kernel TLS data-path for sending.
*/
# define SSL_MODE_NO_KTLS_TX 0x00000200U
/*
* When using DTLS/SCTP, include the terminating zero in the label
@ -506,6 +510,10 @@ typedef int (*SSL_verify_cb)(int preverify_ok, X509_STORE_CTX *x509_ctx);
* - OpenSSL 1.1.1 and 1.1.1a
*/
# define SSL_MODE_DTLS_SCTP_LABEL_LENGTH_BUG 0x00000400U
/*
* Don't use the kernel TLS data-path for receiving.
*/
# define SSL_MODE_NO_KTLS_RX 0x00000800U
/* Cert related flags */
/*
@ -1837,6 +1845,8 @@ __owur int SSL_read_early_data(SSL *s, void *buf, size_t num,
size_t *readbytes);
__owur int SSL_peek(SSL *ssl, void *buf, int num);
__owur int SSL_peek_ex(SSL *ssl, void *buf, size_t num, size_t *readbytes);
__owur ossl_ssize_t SSL_sendfile(SSL *s, int fd, off_t offset, size_t size,
int flags);
__owur int SSL_write(SSL *ssl, const void *buf, int num);
__owur int SSL_write_ex(SSL *s, const void *buf, size_t num, size_t *written);
__owur int SSL_write_early_data(SSL *s, const void *buf, size_t num,
@ -2123,7 +2133,7 @@ void SSL_CTX_set_record_padding_callback_arg(SSL_CTX *ctx, void *arg);
void *SSL_CTX_get_record_padding_callback_arg(const SSL_CTX *ctx);
int SSL_CTX_set_block_padding(SSL_CTX *ctx, size_t block_size);
void SSL_set_record_padding_callback(SSL *ssl,
int SSL_set_record_padding_callback(SSL *ssl,
size_t (*cb) (SSL *ssl, int type,
size_t len, void *arg));
void SSL_set_record_padding_callback_arg(SSL *ssl, void *arg);

1
crypto/openssl/include/openssl/sslerr.h
View file

@ -219,6 +219,7 @@ int ERR_load_SSL_strings(void);
# define SSL_F_SSL_RENEGOTIATE_ABBREVIATED 546
# define SSL_F_SSL_SCAN_CLIENTHELLO_TLSEXT 320
# define SSL_F_SSL_SCAN_SERVERHELLO_TLSEXT 321
# define SSL_F_SSL_SENDFILE 639
# define SSL_F_SSL_SESSION_DUP 348
# define SSL_F_SSL_SESSION_NEW 189
# define SSL_F_SSL_SESSION_PRINT_FP 190

5
crypto/openssl/ssl/build.info
View file

@ -1,4 +1,5 @@
LIBS=../libssl
SOURCE[../libssl]=\
pqueue.c packet.c \
statem/statem_srvr.c statem/statem_clnt.c s3_lib.c s3_enc.c record/rec_layer_s3.c \
@ -13,3 +14,7 @@ SOURCE[../libssl]=\
bio_ssl.c ssl_err.c tls_srp.c t1_trce.c ssl_utst.c \
record/ssl3_buffer.c record/ssl3_record.c record/dtls1_bitmap.c \
statem/statem.c record/ssl3_record_tls13.c
IF[{- !$disabled{ktls} -}]
SOURCE[../libssl]=ktls.c
ENDIF

221
crypto/openssl/ssl/ktls.c Normal file
View file

@ -0,0 +1,221 @@
/*
* Copyright 2018-2020 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the Apache License 2.0 (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
#include "ssl_local.h"
#include "internal/ktls.h"
#if defined(__FreeBSD__)
# include <crypto/cryptodev.h>
/*-
* Check if a given cipher is supported by the KTLS interface.
* The kernel might still fail the setsockopt() if no suitable
* provider is found, but this checks if the socket option
* supports the cipher suite used at all.
*/
int ktls_check_supported_cipher(const SSL *s, const EVP_CIPHER *c,
const EVP_CIPHER_CTX *dd)
{
switch (s->version) {
case TLS1_VERSION:
case TLS1_1_VERSION:
case TLS1_2_VERSION:
case TLS1_3_VERSION:
break;
default:
return 0;
}
switch (s->s3->tmp.new_cipher->algorithm_enc) {
case SSL_AES128GCM:
case SSL_AES256GCM:
return 1;
case SSL_AES128:
case SSL_AES256:
if (s->ext.use_etm)
return 0;
switch (s->s3->tmp.new_cipher->algorithm_mac) {
case SSL_SHA1:
case SSL_SHA256:
case SSL_SHA384:
return 1;
default:
return 0;
}
default:
return 0;
}
}
/* Function to configure kernel TLS structure */
int ktls_configure_crypto(const SSL *s, const EVP_CIPHER *c, EVP_CIPHER_CTX *dd,
void *rl_sequence, ktls_crypto_info_t *crypto_info,
unsigned char **rec_seq, unsigned char *iv,
unsigned char *key, unsigned char *mac_key,
size_t mac_secret_size)
{
memset(crypto_info, 0, sizeof(*crypto_info));
switch (s->s3->tmp.new_cipher->algorithm_enc) {
case SSL_AES128GCM:
case SSL_AES256GCM:
crypto_info->cipher_algorithm = CRYPTO_AES_NIST_GCM_16;
if (s->version == TLS1_3_VERSION)
crypto_info->iv_len = EVP_CIPHER_CTX_iv_length(dd);
else
crypto_info->iv_len = EVP_GCM_TLS_FIXED_IV_LEN;
break;
case SSL_AES128:
case SSL_AES256:
switch (s->s3->tmp.new_cipher->algorithm_mac) {
case SSL_SHA1:
crypto_info->auth_algorithm = CRYPTO_SHA1_HMAC;
break;
case SSL_SHA256:
crypto_info->auth_algorithm = CRYPTO_SHA2_256_HMAC;
break;
case SSL_SHA384:
crypto_info->auth_algorithm = CRYPTO_SHA2_384_HMAC;
break;
default:
return 0;
}
crypto_info->cipher_algorithm = CRYPTO_AES_CBC;
crypto_info->iv_len = EVP_CIPHER_iv_length(c);
crypto_info->auth_key = mac_key;
crypto_info->auth_key_len = mac_secret_size;
break;
default:
return 0;
}
crypto_info->cipher_key = key;
crypto_info->cipher_key_len = EVP_CIPHER_key_length(c);
crypto_info->iv = iv;
crypto_info->tls_vmajor = (s->version >> 8) & 0x000000ff;
crypto_info->tls_vminor = (s->version & 0x000000ff);
# ifdef TCP_RXTLS_ENABLE
memcpy(crypto_info->rec_seq, rl_sequence, sizeof(crypto_info->rec_seq));
if (rec_seq != NULL)
*rec_seq = crypto_info->rec_seq;
# else
if (rec_seq != NULL)
*rec_seq = NULL;
# endif
return 1;
};
#endif /* __FreeBSD__ */
#if defined(OPENSSL_SYS_LINUX)
/* Function to check supported ciphers in Linux */
int ktls_check_supported_cipher(const SSL *s, const EVP_CIPHER *c,
const EVP_CIPHER_CTX *dd)
{
switch (s->version) {
case TLS1_2_VERSION:
case TLS1_3_VERSION:
break;
default:
return 0;
}
/* check that cipher is AES_GCM_128, AES_GCM_256, AES_CCM_128 */
switch (EVP_CIPHER_nid(c))
{
# ifdef OPENSSL_KTLS_AES_CCM_128
case NID_aes_128_ccm:
if (EVP_CIPHER_CTX_tag_length(dd) != EVP_CCM_TLS_TAG_LEN)
return 0;
# endif
# ifdef OPENSSL_KTLS_AES_GCM_128
case NID_aes_128_gcm:
# endif
# ifdef OPENSSL_KTLS_AES_GCM_256
case NID_aes_256_gcm:
# endif
return 1;
default:
return 0;
}
}
/* Function to configure kernel TLS structure */
int ktls_configure_crypto(const SSL *s, const EVP_CIPHER *c, EVP_CIPHER_CTX *dd,
void *rl_sequence, ktls_crypto_info_t *crypto_info,
unsigned char **rec_seq, unsigned char *iv,
unsigned char *key, unsigned char *mac_key,
size_t mac_secret_size)
{
unsigned char geniv[12];
unsigned char *iiv = iv;
if (s->version == TLS1_2_VERSION &&
EVP_CIPHER_mode(c) == EVP_CIPH_GCM_MODE) {
EVP_CIPHER_CTX_ctrl(dd, EVP_CTRL_GET_IV,
EVP_GCM_TLS_FIXED_IV_LEN + EVP_GCM_TLS_EXPLICIT_IV_LEN,
geniv);
iiv = geniv;
}
memset(crypto_info, 0, sizeof(*crypto_info));
switch (EVP_CIPHER_nid(c))
{
# ifdef OPENSSL_KTLS_AES_GCM_128
case NID_aes_128_gcm:
crypto_info->gcm128.info.cipher_type = TLS_CIPHER_AES_GCM_128;
crypto_info->gcm128.info.version = s->version;
crypto_info->tls_crypto_info_len = sizeof(crypto_info->gcm128);
memcpy(crypto_info->gcm128.iv, iiv + EVP_GCM_TLS_FIXED_IV_LEN,
TLS_CIPHER_AES_GCM_128_IV_SIZE);
memcpy(crypto_info->gcm128.salt, iiv, TLS_CIPHER_AES_GCM_128_SALT_SIZE);
memcpy(crypto_info->gcm128.key, key, EVP_CIPHER_key_length(c));
memcpy(crypto_info->gcm128.rec_seq, rl_sequence,
TLS_CIPHER_AES_GCM_128_REC_SEQ_SIZE);
if (rec_seq != NULL)
*rec_seq = crypto_info->gcm128.rec_seq;
return 1;
# endif
# ifdef OPENSSL_KTLS_AES_GCM_256
case NID_aes_256_gcm:
crypto_info->gcm256.info.cipher_type = TLS_CIPHER_AES_GCM_256;
crypto_info->gcm256.info.version = s->version;
crypto_info->tls_crypto_info_len = sizeof(crypto_info->gcm256);
memcpy(crypto_info->gcm256.iv, iiv + EVP_GCM_TLS_FIXED_IV_LEN,
TLS_CIPHER_AES_GCM_256_IV_SIZE);
memcpy(crypto_info->gcm256.salt, iiv, TLS_CIPHER_AES_GCM_256_SALT_SIZE);
memcpy(crypto_info->gcm256.key, key, EVP_CIPHER_key_length(c));
memcpy(crypto_info->gcm256.rec_seq, rl_sequence,
TLS_CIPHER_AES_GCM_256_REC_SEQ_SIZE);
if (rec_seq != NULL)
*rec_seq = crypto_info->gcm256.rec_seq;
return 1;
# endif
# ifdef OPENSSL_KTLS_AES_CCM_128
case NID_aes_128_ccm:
crypto_info->ccm128.info.cipher_type = TLS_CIPHER_AES_CCM_128;
crypto_info->ccm128.info.version = s->version;
crypto_info->tls_crypto_info_len = sizeof(crypto_info->ccm128);
memcpy(crypto_info->ccm128.iv, iiv + EVP_CCM_TLS_FIXED_IV_LEN,
TLS_CIPHER_AES_CCM_128_IV_SIZE);
memcpy(crypto_info->ccm128.salt, iiv, TLS_CIPHER_AES_CCM_128_SALT_SIZE);
memcpy(crypto_info->ccm128.key, key, EVP_CIPHER_key_length(c));
memcpy(crypto_info->ccm128.rec_seq, rl_sequence,
TLS_CIPHER_AES_CCM_128_REC_SEQ_SIZE);
if (rec_seq != NULL)
*rec_seq = crypto_info->ccm128.rec_seq;
return 1;
# endif
default:
return 0;
}
}
#endif /* OPENSSL_SYS_LINUX */

137
crypto/openssl/ssl/record/rec_layer_s3.c
View file

@ -268,11 +268,15 @@ int ssl3_read_n(SSL *s, size_t n, size_t max, int extend, int clearold,
return -1;
}
/* We always act like read_ahead is set for DTLS */
if (!s->rlayer.read_ahead && !SSL_IS_DTLS(s))
/*
* Ktls always reads full records.
* Also, we always act like read_ahead is set for DTLS.
*/
if (!BIO_get_ktls_recv(s->rbio) && !s->rlayer.read_ahead
&& !SSL_IS_DTLS(s)) {
/* ignore max parameter */
max = n;
else {
} else {
if (max < n)
max = n;
if (max > rb->len - rb->offset)
@ -422,6 +426,7 @@ int ssl3_write_bytes(SSL *s, int type, const void *buf_, size_t len,
len >= 4 * (max_send_fragment = ssl_get_max_send_fragment(s)) &&
s->compress == NULL && s->msg_callback == NULL &&
!SSL_WRITE_ETM(s) && SSL_USE_EXPLICIT_IV(s) &&
(BIO_get_ktls_send(s->wbio) == 0) &&
EVP_CIPHER_flags(EVP_CIPHER_CTX_cipher(s->enc_write_ctx)) &
EVP_CIPH_FLAG_TLS1_1_MULTIBLOCK) {
unsigned char aad[13];
@ -751,6 +756,19 @@ int do_ssl3_write(SSL *s, int type, const unsigned char *buf,
s->s3->empty_fragment_done = 1;
}
if (BIO_get_ktls_send(s->wbio)) {
/*
* ktls doesn't modify the buffer, but to avoid a warning we need to
* discard the const qualifier.
* This doesn't leak memory because the buffers have been released when
* switching to ktls.
*/
SSL3_BUFFER_set_buf(&s->rlayer.wbuf[0], (unsigned char *)buf);
SSL3_BUFFER_set_offset(&s->rlayer.wbuf[0], 0);
SSL3_BUFFER_set_app_buffer(&s->rlayer.wbuf[0], 1);
goto wpacket_init_complete;
}
if (create_empty_fragment) {
wb = &s->rlayer.wbuf[0];
#if defined(SSL3_ALIGN_PAYLOAD) && SSL3_ALIGN_PAYLOAD!=0
@ -820,6 +838,8 @@ int do_ssl3_write(SSL *s, int type, const unsigned char *buf,
}
}
wpacket_init_complete:
totlen = 0;
/* Clear our SSL3_RECORD structures */
memset(wr, 0, sizeof(wr));
@ -861,15 +881,19 @@ int do_ssl3_write(SSL *s, int type, const unsigned char *buf,
if (s->compress != NULL)
maxcomplen += SSL3_RT_MAX_COMPRESSED_OVERHEAD;
/* write the header */
if (!WPACKET_put_bytes_u8(thispkt, rectype)
/*
* When using offload kernel will write the header.
* Otherwise write the header now
*/
if (!BIO_get_ktls_send(s->wbio)
&& (!WPACKET_put_bytes_u8(thispkt, rectype)
|| !WPACKET_put_bytes_u16(thispkt, version)
|| !WPACKET_start_sub_packet_u16(thispkt)
|| (eivlen > 0
&& !WPACKET_allocate_bytes(thispkt, eivlen, NULL))
|| (maxcomplen > 0
&& !WPACKET_reserve_bytes(thispkt, maxcomplen,
&compressdata))) {
&compressdata)))) {
SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_DO_SSL3_WRITE,
ERR_R_INTERNAL_ERROR);
goto err;
@ -895,15 +919,20 @@ int do_ssl3_write(SSL *s, int type, const unsigned char *buf,
goto err;
}
} else {
if (!WPACKET_memcpy(thispkt, thiswr->input, thiswr->length)) {
SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_DO_SSL3_WRITE,
ERR_R_INTERNAL_ERROR);
goto err;
if (BIO_get_ktls_send(s->wbio)) {
SSL3_RECORD_reset_data(&wr[j]);
} else {
if (!WPACKET_memcpy(thispkt, thiswr->input, thiswr->length)) {
SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_DO_SSL3_WRITE,
ERR_R_INTERNAL_ERROR);
goto err;
}
SSL3_RECORD_reset_input(&wr[j]);
}
SSL3_RECORD_reset_input(&wr[j]);
}
if (SSL_TREAT_AS_TLS13(s)
&& !BIO_get_ktls_send(s->wbio)
&& s->enc_write_ctx != NULL
&& (s->statem.enc_write_state != ENC_WRITE_STATE_WRITE_PLAIN_ALERTS
|| type != SSL3_RT_ALERT)) {
@ -959,7 +988,7 @@ int do_ssl3_write(SSL *s, int type, const unsigned char *buf,
* in the wb->buf
*/
if (!SSL_WRITE_ETM(s) && mac_size != 0) {
if (!BIO_get_ktls_send(s->wbio) && !SSL_WRITE_ETM(s) && mac_size != 0) {
unsigned char *mac;
if (!WPACKET_allocate_bytes(thispkt, mac_size, &mac)
@ -975,24 +1004,26 @@ int do_ssl3_write(SSL *s, int type, const unsigned char *buf,
* This will be at most one cipher block or the tag length if using
* AEAD. SSL_RT_MAX_CIPHER_BLOCK_SIZE covers either case.
*/
if (!WPACKET_reserve_bytes(thispkt, SSL_RT_MAX_CIPHER_BLOCK_SIZE,
NULL)
/*
* We also need next the amount of bytes written to this
* sub-packet
*/
if (!BIO_get_ktls_send(s->wbio)) {
if (!WPACKET_reserve_bytes(thispkt,
SSL_RT_MAX_CIPHER_BLOCK_SIZE,
NULL)
/*
* We also need next the amount of bytes written to this
* sub-packet
*/
|| !WPACKET_get_length(thispkt, &len)) {
SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_DO_SSL3_WRITE,
ERR_R_INTERNAL_ERROR);
goto err;
}
/* Get a pointer to the start of this record excluding header */
recordstart = WPACKET_get_curr(thispkt) - len;
SSL3_RECORD_set_data(thiswr, recordstart);
SSL3_RECORD_reset_input(thiswr);
SSL3_RECORD_set_length(thiswr, len);
}
/* Get a pointer to the start of this record excluding header */
recordstart = WPACKET_get_curr(thispkt) - len;
SSL3_RECORD_set_data(thiswr, recordstart);
SSL3_RECORD_reset_input(thiswr);
SSL3_RECORD_set_length(thiswr, len);
}
if (s->statem.enc_write_state == ENC_WRITE_STATE_WRITE_PLAIN_ALERTS) {
@ -1008,12 +1039,14 @@ int do_ssl3_write(SSL *s, int type, const unsigned char *buf,
goto err;
}
} else {
if (s->method->ssl3_enc->enc(s, wr, numpipes, 1) < 1) {
if (!ossl_statem_in_error(s)) {
SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_DO_SSL3_WRITE,
ERR_R_INTERNAL_ERROR);
if (!BIO_get_ktls_send(s->wbio)) {
if (s->method->ssl3_enc->enc(s, wr, numpipes, 1) < 1) {
if (!ossl_statem_in_error(s)) {
SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_DO_SSL3_WRITE,
ERR_R_INTERNAL_ERROR);
}
goto err;
}
goto err;
}
}
@ -1023,13 +1056,17 @@ int do_ssl3_write(SSL *s, int type, const unsigned char *buf,
thispkt = &pkt[j];
thiswr = &wr[j];
if (BIO_get_ktls_send(s->wbio))
goto mac_done;
/* Allocate bytes for the encryption overhead */
if (!WPACKET_get_length(thispkt, &origlen)
/* Encryption should never shrink the data! */
|| origlen > thiswr->length
|| (thiswr->length > origlen
&& !WPACKET_allocate_bytes(thispkt,
thiswr->length - origlen, NULL))) {
thiswr->length - origlen,
NULL))) {
SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_DO_SSL3_WRITE,
ERR_R_INTERNAL_ERROR);
goto err;
@ -1074,13 +1111,8 @@ int do_ssl3_write(SSL *s, int type, const unsigned char *buf,
goto err;
}
/*
* we should now have thiswr->data pointing to the encrypted data, which
* is thiswr->length long
*/
SSL3_RECORD_set_type(thiswr, type); /* not needed but helps for
* debugging */
SSL3_RECORD_add_length(thiswr, SSL3_RT_HEADER_LENGTH);
/* header is added by the kernel when using offload */
SSL3_RECORD_add_length(&wr[j], SSL3_RT_HEADER_LENGTH);
if (create_empty_fragment) {
/*
@ -1097,6 +1129,14 @@ int do_ssl3_write(SSL *s, int type, const unsigned char *buf,
return 1;
}
mac_done:
/*
* we should now have thiswr->data pointing to the encrypted data, which
* is thiswr->length long
*/
SSL3_RECORD_set_type(thiswr, type); /* not needed but helps for
* debugging */
/* now let's set up wb */
SSL3_BUFFER_set_left(&s->rlayer.wbuf[j],
prefix_len + SSL3_RECORD_get_length(thiswr));
@ -1150,6 +1190,17 @@ int ssl3_write_pending(SSL *s, int type, const unsigned char *buf, size_t len,
clear_sys_error();
if (s->wbio != NULL) {
s->rwstate = SSL_WRITING;
/*
* To prevent coalescing of control and data messages,
* such as in buffer_write, we flush the BIO
*/
if (BIO_get_ktls_send(s->wbio) && type != SSL3_RT_APPLICATION_DATA) {
i = BIO_flush(s->wbio);
if (i <= 0)
return i;
BIO_set_ktls_ctrl_msg(s->wbio, type);
}
/* TODO(size_t): Convert this call */
i = BIO_write(s->wbio, (char *)
&(SSL3_BUFFER_get_buf(&wb[currbuf])
@ -1162,7 +1213,15 @@ int ssl3_write_pending(SSL *s, int type, const unsigned char *buf, size_t len,
SSL_R_BIO_NOT_SET);
i = -1;
}
if (i > 0 && tmpwrit == SSL3_BUFFER_get_left(&wb[currbuf])) {
/*
* When an empty fragment is sent on a connection using KTLS,
* it is sent as a write of zero bytes. If this zero byte
* write succeeds, i will be 0 rather than a non-zero value.
* Treat i == 0 as success rather than an error for zero byte
* writes to permit this case.
*/
if (i >= 0 && tmpwrit == SSL3_BUFFER_get_left(&wb[currbuf])) {
SSL3_BUFFER_set_left(&wb[currbuf], 0);
SSL3_BUFFER_add_offset(&wb[currbuf], tmpwrit);
if (currbuf + 1 < s->rlayer.numwpipes)

2
crypto/openssl/ssl/record/record.h
View file

@ -25,6 +25,8 @@ typedef struct ssl3_buffer_st {
size_t offset;
/* how many bytes left */
size_t left;
/* 'buf' is from application for KTLS */
int app_buffer;
} SSL3_BUFFER;
#define SEQ_NUM_SIZE 8

3
crypto/openssl/ssl/record/record_local.h
View file

@ -65,6 +65,8 @@ void dtls1_record_bitmap_update(SSL *s, DTLS1_BITMAP *bitmap);
#define SSL3_BUFFER_add_offset(b, o) ((b)->offset += (o))
#define SSL3_BUFFER_is_initialised(b) ((b)->buf != NULL)
#define SSL3_BUFFER_set_default_len(b, l) ((b)->default_len = (l))
#define SSL3_BUFFER_set_app_buffer(b, l) ((b)->app_buffer = (l))
#define SSL3_BUFFER_is_app_buffer(b) ((b)->app_buffer)
void SSL3_BUFFER_clear(SSL3_BUFFER *b);
void SSL3_BUFFER_set_data(SSL3_BUFFER *b, const unsigned char *d, size_t n);
@ -88,6 +90,7 @@ int ssl3_release_write_buffer(SSL *s);
#define SSL3_RECORD_get_input(r) ((r)->input)
#define SSL3_RECORD_set_input(r, i) ((r)->input = (i))
#define SSL3_RECORD_reset_input(r) ((r)->input = (r)->data)
#define SSL3_RECORD_reset_data(r) ((r)->data = (r)->input)
#define SSL3_RECORD_get_seq_num(r) ((r)->seq_num)
#define SSL3_RECORD_get_off(r) ((r)->off)
#define SSL3_RECORD_set_off(r, o) ((r)->off = (o))

33
crypto/openssl/ssl/record/ssl3_buffer.c
View file

@ -111,23 +111,27 @@ int ssl3_setup_write_buffer(SSL *s, size_t numwpipes, size_t len)
for (currpipe = 0; currpipe < numwpipes; currpipe++) {
SSL3_BUFFER *thiswb = &wb[currpipe];
if (thiswb->buf != NULL && thiswb->len != len) {
if (thiswb->len != len) {
OPENSSL_free(thiswb->buf);
thiswb->buf = NULL; /* force reallocation */
}
if (thiswb->buf == NULL) {
p = OPENSSL_malloc(len);
if (p == NULL) {
s->rlayer.numwpipes = currpipe;
/*
* We've got a malloc failure, and we're still initialising
* buffers. We assume we're so doomed that we won't even be able
* to send an alert.
*/
SSLfatal(s, SSL_AD_NO_ALERT,
SSL_F_SSL3_SETUP_WRITE_BUFFER, ERR_R_MALLOC_FAILURE);
return 0;
if (s->wbio == NULL || !BIO_get_ktls_send(s->wbio)) {
p = OPENSSL_malloc(len);
if (p == NULL) {
s->rlayer.numwpipes = currpipe;
/*
* We've got a malloc failure, and we're still initialising
* buffers. We assume we're so doomed that we won't even be able
* to send an alert.
*/
SSLfatal(s, SSL_AD_NO_ALERT,
SSL_F_SSL3_SETUP_WRITE_BUFFER, ERR_R_MALLOC_FAILURE);
return 0;
}
} else {
p = NULL;
}
memset(thiswb, 0, sizeof(SSL3_BUFFER));
thiswb->buf = p;
@ -160,7 +164,10 @@ int ssl3_release_write_buffer(SSL *s)
while (pipes > 0) {
wb = &RECORD_LAYER_get_wbuf(&s->rlayer)[pipes - 1];
OPENSSL_free(wb->buf);
if (SSL3_BUFFER_is_app_buffer(wb))
SSL3_BUFFER_set_app_buffer(wb, 0);
else
OPENSSL_free(wb->buf);
wb->buf = NULL;
pipes--;
}

47
crypto/openssl/ssl/record/ssl3_record.c
View file

@ -186,9 +186,11 @@ int ssl3_get_record(SSL *s)
size_t num_recs = 0, max_recs, j;
PACKET pkt, sslv2pkt;
size_t first_rec_len;
int is_ktls_left;
rr = RECORD_LAYER_get_rrec(&s->rlayer);
rbuf = RECORD_LAYER_get_rbuf(&s->rlayer);
is_ktls_left = (rbuf->left > 0);
max_recs = s->max_pipelines;
if (max_recs == 0)
max_recs = 1;
@ -207,8 +209,32 @@ int ssl3_get_record(SSL *s)
rret = ssl3_read_n(s, SSL3_RT_HEADER_LENGTH,
SSL3_BUFFER_get_len(rbuf), 0,
num_recs == 0 ? 1 : 0, &n);
if (rret <= 0)
return rret; /* error or non-blocking */
if (rret <= 0) {
#ifndef OPENSSL_NO_KTLS
if (!BIO_get_ktls_recv(s->rbio) || rret == 0)
return rret; /* error or non-blocking */
switch (errno) {
case EBADMSG:
SSLfatal(s, SSL_AD_BAD_RECORD_MAC,
SSL_F_SSL3_GET_RECORD,
SSL_R_DECRYPTION_FAILED_OR_BAD_RECORD_MAC);
break;
case EMSGSIZE:
SSLfatal(s, SSL_AD_RECORD_OVERFLOW,
SSL_F_SSL3_GET_RECORD,
SSL_R_PACKET_LENGTH_TOO_LONG);
break;
case EINVAL:
SSLfatal(s, SSL_AD_PROTOCOL_VERSION,
SSL_F_SSL3_GET_RECORD,
SSL_R_WRONG_VERSION_NUMBER);
break;
default:
break;
}
#endif
return rret;
}
RECORD_LAYER_set_rstate(&s->rlayer, SSL_ST_READ_BODY);
p = RECORD_LAYER_get_packet(&s->rlayer);
@ -386,7 +412,7 @@ int ssl3_get_record(SSL *s)
len -= SSL3_RT_MAX_COMPRESSED_OVERHEAD;
#endif
if (thisrr->length > len) {
if (thisrr->length > len && !BIO_get_ktls_recv(s->rbio)) {
SSLfatal(s, SSL_AD_RECORD_OVERFLOW, SSL_F_SSL3_GET_RECORD,
SSL_R_ENCRYPTED_LENGTH_TOO_LONG);
return -1;
@ -404,6 +430,7 @@ int ssl3_get_record(SSL *s)
} else {
more = thisrr->length;
}
if (more > 0) {
/* now s->packet_length == SSL3_RT_HEADER_LENGTH */
@ -491,6 +518,13 @@ int ssl3_get_record(SSL *s)
return 1;
}
/*
* KTLS reads full records. If there is any data left,
* then it is from before enabling ktls
*/
if (BIO_get_ktls_recv(s->rbio) && !is_ktls_left)
goto skip_decryption;
/*
* If in encrypt-then-mac mode calculate mac from encrypted record. All
* the details below are public so no timing details can leak.
@ -678,6 +712,8 @@ int ssl3_get_record(SSL *s)
return -1;
}
skip_decryption:
for (j = 0; j < num_recs; j++) {
thisrr = &rr[j];
@ -739,7 +775,7 @@ int ssl3_get_record(SSL *s)
return -1;
}
if (thisrr->length > SSL3_RT_MAX_PLAIN_LENGTH) {
if (thisrr->length > SSL3_RT_MAX_PLAIN_LENGTH && !BIO_get_ktls_recv(s->rbio)) {
SSLfatal(s, SSL_AD_RECORD_OVERFLOW, SSL_F_SSL3_GET_RECORD,
SSL_R_DATA_LENGTH_TOO_LONG);
return -1;
@ -747,7 +783,8 @@ int ssl3_get_record(SSL *s)
/* If received packet overflows current Max Fragment Length setting */
if (s->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(s->session)
&& thisrr->length > GET_MAX_FRAGMENT_LENGTH(s->session)) {
&& thisrr->length > GET_MAX_FRAGMENT_LENGTH(s->session)
&& !BIO_get_ktls_recv(s->rbio)) {
SSLfatal(s, SSL_AD_RECORD_OVERFLOW, SSL_F_SSL3_GET_RECORD,
SSL_R_DATA_LENGTH_TOO_LONG);
return -1;

1
crypto/openssl/ssl/ssl_err.c
View file

@ -312,6 +312,7 @@ static const ERR_STRING_DATA SSL_str_functs[] = {
"SSL_renegotiate_abbreviated"},
{ERR_PACK(ERR_LIB_SSL, SSL_F_SSL_SCAN_CLIENTHELLO_TLSEXT, 0), ""},
{ERR_PACK(ERR_LIB_SSL, SSL_F_SSL_SCAN_SERVERHELLO_TLSEXT, 0), ""},
{ERR_PACK(ERR_LIB_SSL, SSL_F_SSL_SENDFILE, 0), "SSL_sendfile"},
{ERR_PACK(ERR_LIB_SSL, SSL_F_SSL_SESSION_DUP, 0), "ssl_session_dup"},
{ERR_PACK(ERR_LIB_SSL, SSL_F_SSL_SESSION_NEW, 0), "SSL_SESSION_new"},
{ERR_PACK(ERR_LIB_SSL, SSL_F_SSL_SESSION_PRINT_FP, 0),

104
crypto/openssl/ssl/ssl_lib.c
View file

@ -11,6 +11,7 @@
#include <stdio.h>
#include "ssl_local.h"
#include "e_os.h"
#include <openssl/objects.h>
#include <openssl/x509v3.h>
#include <openssl/rand.h>
@ -22,6 +23,7 @@
#include <openssl/ct.h>
#include "internal/cryptlib.h"
#include "internal/refcount.h"
#include "internal/ktls.h"
const char SSL_version_str[] = OPENSSL_VERSION_TEXT;
@ -1153,11 +1155,15 @@ void SSL_free(SSL *s)
dane_final(&s->dane);
CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
RECORD_LAYER_release(&s->rlayer);
/* Ignore return value */
ssl_free_wbio_buffer(s);
BIO_free_all(s->wbio);
s->wbio = NULL;
BIO_free_all(s->rbio);
s->rbio = NULL;
BUF_MEM_free(s->init_buf);
@ -1214,8 +1220,6 @@ void SSL_free(SSL *s)
if (s->method != NULL)
s->method->ssl_free(s);
RECORD_LAYER_release(&s->rlayer);
SSL_CTX_free(s->ctx);
ASYNC_WAIT_CTX_free(s->waitctx);
@ -1355,6 +1359,15 @@ int SSL_set_fd(SSL *s, int fd)
}
BIO_set_fd(bio, fd, BIO_NOCLOSE);
SSL_set_bio(s, bio, bio);
#ifndef OPENSSL_NO_KTLS
/*
* The new socket is created successfully regardless of ktls_enable.
* ktls_enable doesn't change any functionality of the socket, except
* changing the setsockopt to enable the processing of ktls_start.
* Thus, it is not a problem to call it for non-TLS sockets.
*/
ktls_enable(fd);
#endif /* OPENSSL_NO_KTLS */
ret = 1;
err:
return ret;
@ -1374,6 +1387,15 @@ int SSL_set_wfd(SSL *s, int fd)
}
BIO_set_fd(bio, fd, BIO_NOCLOSE);
SSL_set0_wbio(s, bio);
#ifndef OPENSSL_NO_KTLS
/*
* The new socket is created successfully regardless of ktls_enable.
* ktls_enable doesn't change any functionality of the socket, except
* changing the setsockopt to enable the processing of ktls_start.
* Thus, it is not a problem to call it for non-TLS sockets.
*/
ktls_enable(fd);
#endif /* OPENSSL_NO_KTLS */
} else {
BIO_up_ref(rbio);
SSL_set0_wbio(s, rbio);
@ -1955,6 +1977,69 @@ int ssl_write_internal(SSL *s, const void *buf, size_t num, size_t *written)
}
}
ossl_ssize_t SSL_sendfile(SSL *s, int fd, off_t offset, size_t size, int flags)
{
ossl_ssize_t ret;
if (s->handshake_func == NULL) {
SSLerr(SSL_F_SSL_SENDFILE, SSL_R_UNINITIALIZED);
return -1;
}
if (s->shutdown & SSL_SENT_SHUTDOWN) {
s->rwstate = SSL_NOTHING;
SSLerr(SSL_F_SSL_SENDFILE, SSL_R_PROTOCOL_IS_SHUTDOWN);
return -1;
}
if (!BIO_get_ktls_send(s->wbio)) {
SSLerr(SSL_F_SSL_SENDFILE, SSL_R_UNINITIALIZED);
return -1;
}
/* If we have an alert to send, lets send it */
if (s->s3->alert_dispatch) {
ret = (ossl_ssize_t)s->method->ssl_dispatch_alert(s);
if (ret <= 0) {
/* SSLfatal() already called if appropriate */
return ret;
}
/* if it went, fall through and send more stuff */
}
s->rwstate = SSL_WRITING;
if (BIO_flush(s->wbio) <= 0) {
if (!BIO_should_retry(s->wbio)) {
s->rwstate = SSL_NOTHING;
} else {
#ifdef EAGAIN
set_sys_error(EAGAIN);
#endif
}
return -1;
}
#ifdef OPENSSL_NO_KTLS
ERR_raise_data(ERR_LIB_SYS, ERR_R_INTERNAL_ERROR, "calling sendfile()");
return -1;
#else
ret = ktls_sendfile(SSL_get_wfd(s), fd, offset, size, flags);
if (ret < 0) {
#if defined(EAGAIN) && defined(EINTR) && defined(EBUSY)
if ((get_last_sys_error() == EAGAIN) ||
(get_last_sys_error() == EINTR) ||
(get_last_sys_error() == EBUSY))
BIO_set_retry_write(s->wbio);
else
#endif
SSLerr(SSL_F_SSL_SENDFILE, SSL_R_UNINITIALIZED);
return ret;
}
s->rwstate = SSL_NOTHING;
return ret;
#endif
}
int SSL_write(SSL *s, const void *buf, int num)
{
int ret;
@ -2199,6 +2284,10 @@ long SSL_ctrl(SSL *s, int cmd, long larg, void *parg)
case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
return 0;
#ifndef OPENSSL_NO_KTLS
if (s->wbio != NULL && BIO_get_ktls_send(s->wbio))
return 0;
#endif /* OPENSSL_NO_KTLS */
s->max_send_fragment = larg;
if (s->max_send_fragment < s->split_send_fragment)
s->split_send_fragment = s->max_send_fragment;
@ -4417,11 +4506,18 @@ int SSL_CTX_set_block_padding(SSL_CTX *ctx, size_t block_size)
return 1;
}
void SSL_set_record_padding_callback(SSL *ssl,
int SSL_set_record_padding_callback(SSL *ssl,
size_t (*cb) (SSL *ssl, int type,
size_t len, void *arg))
{
ssl->record_padding_cb = cb;
BIO *b;
b = SSL_get_wbio(ssl);
if (b == NULL || !BIO_get_ktls_send(b)) {
ssl->record_padding_cb = cb;
return 1;
}
return 0;
}
void SSL_set_record_padding_callback_arg(SSL *ssl, void *arg)

13
crypto/openssl/ssl/ssl_local.h
View file

@ -34,6 +34,8 @@
# include "internal/dane.h"
# include "internal/refcount.h"
# include "internal/tsan_assist.h"
# include "internal/bio.h"
# include "internal/ktls.h"
# ifdef OPENSSL_BUILD_SHLIBSSL
# undef OPENSSL_EXTERN
@ -2618,6 +2620,17 @@ __owur int ssl_log_secret(SSL *ssl, const char *label,
#define EARLY_EXPORTER_SECRET_LABEL "EARLY_EXPORTER_SECRET"
#define EXPORTER_SECRET_LABEL "EXPORTER_SECRET"
# ifndef OPENSSL_NO_KTLS
/* ktls.c */
int ktls_check_supported_cipher(const SSL *s, const EVP_CIPHER *c,
const EVP_CIPHER_CTX *dd);
int ktls_configure_crypto(const SSL *s, const EVP_CIPHER *c, EVP_CIPHER_CTX *dd,
void *rl_sequence, ktls_crypto_info_t *crypto_info,
unsigned char **rec_seq, unsigned char *iv,
unsigned char *key, unsigned char *mac_key,
size_t mac_secret_size);
# endif
/* s3_cbc.c */
__owur char ssl3_cbc_record_digest_supported(const EVP_MD_CTX *ctx);
__owur int ssl3_cbc_digest_record(const EVP_MD_CTX *ctx,

128
crypto/openssl/ssl/t1_enc.c
View file

@ -10,10 +10,14 @@
#include <stdio.h>
#include "ssl_local.h"
#include "record/record_local.h"
#include "internal/ktls.h"
#include "internal/cryptlib.h"
#include <openssl/comp.h>
#include <openssl/evp.h>
#include <openssl/kdf.h>
#include <openssl/rand.h>
#include <openssl/obj_mac.h>
/* seed1 through seed5 are concatenated */
static int tls1_PRF(SSL *s,
@ -78,6 +82,41 @@ static int tls1_generate_key_block(SSL *s, unsigned char *km, size_t num)
return ret;
}
#ifndef OPENSSL_NO_KTLS
/*
* Count the number of records that were not processed yet from record boundary.
*
* This function assumes that there are only fully formed records read in the
* record layer. If read_ahead is enabled, then this might be false and this
* function will fail.
*/
# ifndef OPENSSL_NO_KTLS_RX
static int count_unprocessed_records(SSL *s)
{
SSL3_BUFFER *rbuf = RECORD_LAYER_get_rbuf(&s->rlayer);
PACKET pkt, subpkt;
int count = 0;
if (!PACKET_buf_init(&pkt, rbuf->buf + rbuf->offset, rbuf->left))
return -1;
while (PACKET_remaining(&pkt) > 0) {
/* Skip record type and version */
if (!PACKET_forward(&pkt, 3))
return -1;
/* Read until next record */
if (PACKET_get_length_prefixed_2(&pkt, &subpkt))
return -1;
count += 1;
}
return count;
}
# endif
#endif
int tls1_change_cipher_state(SSL *s, int which)
{
unsigned char *p, *mac_secret;
@ -94,6 +133,16 @@ int tls1_change_cipher_state(SSL *s, int which)
EVP_PKEY *mac_key;
size_t n, i, j, k, cl;
int reuse_dd = 0;
#ifndef OPENSSL_NO_KTLS
ktls_crypto_info_t crypto_info;
unsigned char *rec_seq;
void *rl_sequence;
# ifndef OPENSSL_NO_KTLS_RX
int count_unprocessed;
int bit;
# endif
BIO *bio;
#endif
c = s->s3->tmp.new_sym_enc;
m = s->s3->tmp.new_hash;
@ -312,6 +361,85 @@ int tls1_change_cipher_state(SSL *s, int which)
ERR_R_INTERNAL_ERROR);
goto err;
}
#ifndef OPENSSL_NO_KTLS
if (s->compress)
goto skip_ktls;
if (((which & SSL3_CC_READ) && (s->mode & SSL_MODE_NO_KTLS_RX))
|| ((which & SSL3_CC_WRITE) && (s->mode & SSL_MODE_NO_KTLS_TX)))
goto skip_ktls;
/* ktls supports only the maximum fragment size */
if (ssl_get_max_send_fragment(s) != SSL3_RT_MAX_PLAIN_LENGTH)
goto skip_ktls;
/* check that cipher is supported */
if (!ktls_check_supported_cipher(s, c, dd))
goto skip_ktls;
if (which & SSL3_CC_WRITE)
bio = s->wbio;
else
bio = s->rbio;
if (!ossl_assert(bio != NULL)) {
SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS1_CHANGE_CIPHER_STATE,
ERR_R_INTERNAL_ERROR);
goto err;
}
/* All future data will get encrypted by ktls. Flush the BIO or skip ktls */
if (which & SSL3_CC_WRITE) {
if (BIO_flush(bio) <= 0)
goto skip_ktls;
}
/* ktls doesn't support renegotiation */
if ((BIO_get_ktls_send(s->wbio) && (which & SSL3_CC_WRITE)) ||
(BIO_get_ktls_recv(s->rbio) && (which & SSL3_CC_READ))) {
SSLfatal(s, SSL_AD_NO_RENEGOTIATION, SSL_F_TLS1_CHANGE_CIPHER_STATE,
ERR_R_INTERNAL_ERROR);
goto err;
}
if (which & SSL3_CC_WRITE)
rl_sequence = RECORD_LAYER_get_write_sequence(&s->rlayer);
else
rl_sequence = RECORD_LAYER_get_read_sequence(&s->rlayer);
if (!ktls_configure_crypto(s, c, dd, rl_sequence, &crypto_info, &rec_seq,
iv, key, ms, *mac_secret_size))
goto skip_ktls;
if (which & SSL3_CC_READ) {
# ifndef OPENSSL_NO_KTLS_RX
count_unprocessed = count_unprocessed_records(s);
if (count_unprocessed < 0)
goto skip_ktls;
/* increment the crypto_info record sequence */
while (count_unprocessed) {
for (bit = 7; bit >= 0; bit--) { /* increment */
++rec_seq[bit];
if (rec_seq[bit] != 0)
break;
}
count_unprocessed--;
}
# else
goto skip_ktls;
# endif
}
/* ktls works with user provided buffers directly */
if (BIO_set_ktls(bio, &crypto_info, which & SSL3_CC_WRITE)) {
if (which & SSL3_CC_WRITE)
ssl3_release_write_buffer(s);
SSL_set_options(s, SSL_OP_NO_RENEGOTIATION);
}
skip_ktls:
#endif /* OPENSSL_NO_KTLS */
s->statem.enc_write_state = ENC_WRITE_STATE_VALID;
#ifdef SSL_DEBUG

81
crypto/openssl/ssl/tls13_enc.c
View file

@ -9,6 +9,8 @@
#include <stdlib.h>
#include "ssl_local.h"
#include "internal/ktls.h"
#include "record/record_local.h"
#include "internal/cryptlib.h"
#include <openssl/evp.h>
#include <openssl/kdf.h>
@ -363,9 +365,9 @@ static int derive_secret_key_and_iv(SSL *s, int sending, const EVP_MD *md,
const unsigned char *hash,
const unsigned char *label,
size_t labellen, unsigned char *secret,
unsigned char *iv, EVP_CIPHER_CTX *ciph_ctx)
unsigned char *key, unsigned char *iv,
EVP_CIPHER_CTX *ciph_ctx)
{
unsigned char key[EVP_MAX_KEY_LENGTH];
size_t ivlen, keylen, taglen;
int hashleni = EVP_MD_size(md);
size_t hashlen;
@ -374,14 +376,14 @@ static int derive_secret_key_and_iv(SSL *s, int sending, const EVP_MD *md,
if (!ossl_assert(hashleni >= 0)) {
SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_DERIVE_SECRET_KEY_AND_IV,
ERR_R_EVP_LIB);
goto err;
return 0;
}
hashlen = (size_t)hashleni;
if (!tls13_hkdf_expand(s, md, insecret, label, labellen, hash, hashlen,
secret, hashlen, 1)) {
/* SSLfatal() already called */
goto err;
return 0;
}
/* TODO(size_t): convert me */
@ -401,7 +403,7 @@ static int derive_secret_key_and_iv(SSL *s, int sending, const EVP_MD *md,
} else {
SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_DERIVE_SECRET_KEY_AND_IV,
ERR_R_EVP_LIB);
goto err;
return 0;
}
if (algenc & (SSL_AES128CCM8 | SSL_AES256CCM8))
taglen = EVP_CCM8_TLS_TAG_LEN;
@ -415,7 +417,7 @@ static int derive_secret_key_and_iv(SSL *s, int sending, const EVP_MD *md,
if (!tls13_derive_key(s, md, secret, key, keylen)
|| !tls13_derive_iv(s, md, secret, iv, ivlen)) {
/* SSLfatal() already called */
goto err;
return 0;
}
if (EVP_CipherInit_ex(ciph_ctx, ciph, NULL, NULL, NULL, sending) <= 0
@ -425,13 +427,10 @@ static int derive_secret_key_and_iv(SSL *s, int sending, const EVP_MD *md,
|| EVP_CipherInit_ex(ciph_ctx, NULL, NULL, key, NULL, -1) <= 0) {
SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_DERIVE_SECRET_KEY_AND_IV,
ERR_R_EVP_LIB);
goto err;
return 0;
}
return 1;
err:
OPENSSL_cleanse(key, sizeof(key));
return 0;
}
int tls13_change_cipher_state(SSL *s, int which)
@ -456,6 +455,7 @@ int tls13_change_cipher_state(SSL *s, int which)
static const unsigned char early_exporter_master_secret[] = "e exp master";
#endif
unsigned char *iv;
unsigned char key[EVP_MAX_KEY_LENGTH];
unsigned char secret[EVP_MAX_MD_SIZE];
unsigned char hashval[EVP_MAX_MD_SIZE];
unsigned char *hash = hashval;
@ -469,6 +469,10 @@ int tls13_change_cipher_state(SSL *s, int which)
int ret = 0;
const EVP_MD *md = NULL;
const EVP_CIPHER *cipher = NULL;
#if !defined(OPENSSL_NO_KTLS) && defined(OPENSSL_KTLS_TLS13)
ktls_crypto_info_t crypto_info;
BIO *bio;
#endif
if (which & SSL3_CC_READ) {
if (s->enc_read_ctx != NULL) {
@ -671,9 +675,13 @@ int tls13_change_cipher_state(SSL *s, int which)
}
}
/* check whether cipher is known */
if(!ossl_assert(cipher != NULL))
goto err;
if (!derive_secret_key_and_iv(s, which & SSL3_CC_WRITE, md, cipher,
insecret, hash, label, labellen, secret, iv,
ciph_ctx)) {
insecret, hash, label, labellen, secret, key,
iv, ciph_ctx)) {
/* SSLfatal() already called */
goto err;
}
@ -714,8 +722,51 @@ int tls13_change_cipher_state(SSL *s, int which)
s->statem.enc_write_state = ENC_WRITE_STATE_WRITE_PLAIN_ALERTS;
else
s->statem.enc_write_state = ENC_WRITE_STATE_VALID;
#ifndef OPENSSL_NO_KTLS
# if defined(OPENSSL_KTLS_TLS13)
if (!(which & SSL3_CC_WRITE) || !(which & SSL3_CC_APPLICATION)
|| ((which & SSL3_CC_WRITE) && (s->mode & SSL_MODE_NO_KTLS_TX)))
goto skip_ktls;
/* ktls supports only the maximum fragment size */
if (ssl_get_max_send_fragment(s) != SSL3_RT_MAX_PLAIN_LENGTH)
goto skip_ktls;
/* ktls does not support record padding */
if (s->record_padding_cb != NULL)
goto skip_ktls;
/* check that cipher is supported */
if (!ktls_check_supported_cipher(s, cipher, ciph_ctx))
goto skip_ktls;
bio = s->wbio;
if (!ossl_assert(bio != NULL)) {
SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS13_CHANGE_CIPHER_STATE,
ERR_R_INTERNAL_ERROR);
goto err;
}
/* All future data will get encrypted by ktls. Flush the BIO or skip ktls */
if (BIO_flush(bio) <= 0)
goto skip_ktls;
/* configure kernel crypto structure */
if (!ktls_configure_crypto(s, cipher, ciph_ctx,
RECORD_LAYER_get_write_sequence(&s->rlayer),
&crypto_info, NULL, iv, key, NULL, 0))
goto skip_ktls;
/* ktls works with user provided buffers directly */
if (BIO_set_ktls(bio, &crypto_info, which & SSL3_CC_WRITE))
ssl3_release_write_buffer(s);
skip_ktls:
# endif
#endif
ret = 1;
err:
OPENSSL_cleanse(key, sizeof(key));
OPENSSL_cleanse(secret, sizeof(secret));
return ret;
}
@ -729,6 +780,7 @@ int tls13_update_key(SSL *s, int sending)
#endif
const EVP_MD *md = ssl_handshake_md(s);
size_t hashlen = EVP_MD_size(md);
unsigned char key[EVP_MAX_KEY_LENGTH];
unsigned char *insecret, *iv;
unsigned char secret[EVP_MAX_MD_SIZE];
EVP_CIPHER_CTX *ciph_ctx;
@ -753,8 +805,8 @@ int tls13_update_key(SSL *s, int sending)
if (!derive_secret_key_and_iv(s, sending, ssl_handshake_md(s),
s->s3->tmp.new_sym_enc, insecret, NULL,
application_traffic,
sizeof(application_traffic) - 1, secret, iv,
ciph_ctx)) {
sizeof(application_traffic) - 1, secret, key,
iv, ciph_ctx)) {
/* SSLfatal() already called */
goto err;
}
@ -764,6 +816,7 @@ int tls13_update_key(SSL *s, int sending)
s->statem.enc_write_state = ENC_WRITE_STATE_VALID;
ret = 1;
err:
OPENSSL_cleanse(key, sizeof(key));
OPENSSL_cleanse(secret, sizeof(secret));
return ret;
}

18
secure/lib/libcrypto/Makefile
View file

@ -4,6 +4,7 @@ SHLIBDIR?= /lib
SUBDIR= engines
.include <bsd.own.mk>
.include <src.opts.mk>
PACKAGE= runtime
LIB= crypto
@ -429,6 +430,17 @@ SRCS+= buildinf.h
CLEANDIRS= openssl
CLEANFILES= buildinf.h opensslconf.h opensslconf.h.tmp
.if defined(ASM_${MACHINE_CPUARCH})
_cmd1=/%%NO_ASM%%/d
.else
_cmd1=s/%%NO_ASM%%//
.endif
.if ${MK_OPENSSL_KTLS} != "no"
_cmd2=/%%NO_KTLS%%/d
.else
_cmd2=s/%%NO_KTLS%%//
.endif
buildinf.h: Makefile
( echo "/*"; \
echo " * WARNING: do not edit!"; \
@ -447,11 +459,7 @@ openssl_opensslconf.h: opensslconf.h
ln -fs ${.OBJDIR}/${.ALLSRC} openssl/${.ALLSRC}
opensslconf.h: opensslconf.h.in
.if defined(ASM_${MACHINE_CPUARCH})
sed 's/%%ASM%%//; /%%NO_ASM%%/d' ${.ALLSRC} > ${.TARGET}.tmp
.else
sed '/%%ASM%%/d; s/%%NO_ASM%%//' ${.ALLSRC} > ${.TARGET}.tmp
.endif
sed '${_cmd1}; ${_cmd2}' ${.ALLSRC} > ${.TARGET}.tmp
mv -f ${.TARGET}.tmp ${.TARGET}
.include <bsd.lib.mk>

3
secure/lib/libcrypto/opensslconf.h.in
View file

@ -67,6 +67,9 @@ extern "C" {
#ifndef OPENSSL_NO_HEARTBEATS
# define OPENSSL_NO_HEARTBEATS
#endif
%%NO_KTLS%%#ifndef OPENSSL_NO_KTLS
%%NO_KTLS%%# define OPENSSL_NO_KTLS
%%NO_KTLS%%#endif
#ifndef OPENSSL_NO_MSAN
# define OPENSSL_NO_MSAN
#endif

6
secure/lib/libssl/Makefile
View file

@ -1,5 +1,7 @@
# $FreeBSD$
.include <src.opts.mk>
LIB= ssl
SHLIB_MAJOR= 111
VERSION_MAP= ${.CURDIR}/Version.map
@ -22,6 +24,10 @@ SRCS+= ssl3_record.c ssl3_record_tls13.c
SRCS+= extensions.c extensions_clnt.c extensions_cust.c extensions_srvr.c
SRCS+= statem.c statem_clnt.c statem_dtls.c statem_lib.c statem_srvr.c
.if ${MK_OPENSSL_KTLS} != "no"
SRCS+= ktls.c
.endif
SRCS+= dummy_abi.c
LIBADD= crypto

6
secure/lib/libssl/Version.map
View file

@ -514,3 +514,9 @@ OPENSSL_1_1_1a {
SSL_get_signature_type_nid;
local: *;
} OPENSSL_1_1_1;
OPENSSL_1_1_1e {
global:
SSL_sendfile;
local: *;
} OPENSSL_1_1_1a;

7
share/mk/src.opts.mk
View file

@ -330,6 +330,13 @@ BROKEN_OPTIONS+=LOADER_UBOOT
BROKEN_OPTIONS+=LOADER_GELI LOADER_LUA
.endif
# Kernel TLS is enabled by default on amd64
.if ${__T} == "amd64"
__DEFAULT_YES_OPTIONS+=OPENSSL_KTLS
.else
__DEFAULT_NO_OPTIONS+=OPENSSL_KTLS
.endif
.if ${__T:Mmips64*}
# profiling won't work on MIPS64 because there is only assembly for o32
BROKEN_OPTIONS+=PROFILE

1
tools/build/options/WITHOUT_OPENSSL_KTLS Normal file
View file

@ -0,0 +1 @@
Set to not include kernel TLS support in OpenSSL.

1
tools/build/options/WITH_OPENSSL_KTLS Normal file
View file

@ -0,0 +1 @@
Set to include kernel TLS support in OpenSSL.