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-rw-r--r--CHANGES.md4
-rw-r--r--ssl/tls13_enc.c32
-rw-r--r--test/sslapitest.c2
3 files changed, 26 insertions, 12 deletions
diff --git a/CHANGES.md b/CHANGES.md
index d82d857782..6ef8e7c5c8 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -24,6 +24,10 @@ OpenSSL 3.1
### Changes between 3.0 and 3.1 [xx XXX xxxx]
+ * Extended Kernel TLS (KTLS) to support TLS 1.3 receive offload.
+
+ *Daiki Ueno, John Baldwin and Dmitry Podgorny*
+
* Add support for TCP Fast Open (RFC7413) to macOS, Linux, and FreeBSD where
supported and enabled.
diff --git a/ssl/tls13_enc.c b/ssl/tls13_enc.c
index 32ce92f572..e497eabca0 100644
--- a/ssl/tls13_enc.c
+++ b/ssl/tls13_enc.c
@@ -434,6 +434,7 @@ int tls13_change_cipher_state(SSL *s, int which)
const EVP_CIPHER *cipher = NULL;
#if !defined(OPENSSL_NO_KTLS) && defined(OPENSSL_KTLS_TLS13)
ktls_crypto_info_t crypto_info;
+ void *rl_sequence;
BIO *bio;
#endif
@@ -688,8 +689,7 @@ int tls13_change_cipher_state(SSL *s, int which)
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)
+ if (!(which & SSL3_CC_APPLICATION)
|| (s->options & SSL_OP_ENABLE_KTLS) == 0)
goto skip_ktls;
@@ -705,7 +705,10 @@ int tls13_change_cipher_state(SSL *s, int which)
if (!ktls_check_supported_cipher(s, cipher, ciph_ctx))
goto skip_ktls;
- bio = s->wbio;
+ if (which & SSL3_CC_WRITE)
+ bio = s->wbio;
+ else
+ bio = s->rbio;
if (!ossl_assert(bio != NULL)) {
SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
@@ -713,19 +716,26 @@ int tls13_change_cipher_state(SSL *s, int which)
}
/* All future data will get encrypted by ktls. Flush the BIO or skip ktls */
- if (BIO_flush(bio) <= 0)
- goto skip_ktls;
+ if (which & SSL3_CC_WRITE) {
+ 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, which & SSL3_CC_WRITE, iv, key,
- NULL, 0))
+ 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, cipher, ciph_ctx, rl_sequence, &crypto_info,
+ which & SSL3_CC_WRITE, 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);
+ if (BIO_set_ktls(bio, &crypto_info, which & SSL3_CC_WRITE)) {
+ if (which & SSL3_CC_WRITE)
+ ssl3_release_write_buffer(s);
+ }
skip_ktls:
# endif
#endif
diff --git a/test/sslapitest.c b/test/sslapitest.c
index c7d52817e5..b95d6201ed 100644
--- a/test/sslapitest.c
+++ b/test/sslapitest.c
@@ -1242,7 +1242,7 @@ static int execute_test_ktls(int cis_ktls, int sis_ktls,
#if defined(OPENSSL_NO_KTLS_RX)
rx_supported = 0;
#else
- rx_supported = (tls_version != TLS1_3_VERSION);
+ rx_supported = 1;
#endif
if (!cis_ktls || !rx_supported) {
if (!TEST_false(BIO_get_ktls_recv(clientssl->rbio)))