#include <vnet/tls/tls.h>
#include <ctype.h>
#include <tlsopenssl/tls_openssl.h>
+#include <tlsopenssl/tls_bio.h>
#define MAX_CRYPTO_LEN 64
return pool_elt_at_index (openssl_main.lctx_pool, lctx_index);
}
-static int
-openssl_read_from_bio_into_fifo (svm_fifo_t * f, BIO * bio)
-{
- u32 enq_now, enq_max;
- svm_fifo_chunk_t *c;
- int read, rv;
-
- enq_max = svm_fifo_max_enqueue_prod (f);
- if (!enq_max)
- return 0;
-
- svm_fifo_fill_chunk_list (f);
-
- enq_now = clib_min (svm_fifo_max_write_chunk (f), enq_max);
- if (!enq_now)
- return 0;
-
- read = BIO_read (bio, svm_fifo_tail (f), enq_now);
- if (read <= 0)
- return 0;
-
- c = svm_fifo_tail_chunk (f);
- while ((c = c->next) && read < enq_max)
- {
- enq_now = clib_min (c->length, enq_max - read);
- rv = BIO_read (bio, c->data, enq_now);
- read += rv > 0 ? rv : 0;
-
- if (rv < enq_now)
- break;
- }
-
- svm_fifo_enqueue_nocopy (f, read);
-
- return read;
-}
-
static int
openssl_read_from_ssl_into_fifo (svm_fifo_t * f, SSL * ssl)
{
- u32 enq_now, enq_max;
- svm_fifo_chunk_t *c;
- int read, rv;
+ int read, rv, n_fs, i;
+ const int n_segs = 2;
+ svm_fifo_seg_t fs[n_segs];
+ u32 max_enq;
- enq_max = svm_fifo_max_enqueue_prod (f);
- if (!enq_max)
+ max_enq = svm_fifo_max_enqueue_prod (f);
+ n_fs = svm_fifo_provision_chunks (f, fs, n_segs, max_enq);
+ if (n_fs < 0)
return 0;
- svm_fifo_fill_chunk_list (f);
-
- enq_now = clib_min (svm_fifo_max_write_chunk (f), enq_max);
- if (!enq_now)
- return 0;
-
- read = SSL_read (ssl, svm_fifo_tail (f), enq_now);
+ /* Return early if we can't read anything */
+ read = SSL_read (ssl, fs[0].data, fs[0].len);
if (read <= 0)
return 0;
- c = svm_fifo_tail_chunk (f);
- while ((c = c->next) && read < enq_max)
+ for (i = 1; i < n_fs; i++)
{
- enq_now = clib_min (c->length, enq_max - read);
- rv = SSL_read (ssl, c->data, enq_now);
+ rv = SSL_read (ssl, fs[i].data, fs[i].len);
read += rv > 0 ? rv : 0;
- if (rv < enq_now)
+ if (rv < fs[i].len)
break;
}
}
static int
-openssl_write_from_fifo_into_bio (svm_fifo_t * f, BIO * bio, u32 len)
-{
- svm_fifo_chunk_t *c;
- int wrote, rv;
- u32 deq_now;
-
- deq_now = clib_min (svm_fifo_max_read_chunk (f), len);
- wrote = BIO_write (bio, svm_fifo_head (f), deq_now);
- if (wrote <= 0)
- return 0;
-
- c = svm_fifo_head_chunk (f);
- while ((c = c->next) && wrote < len)
- {
- deq_now = clib_min (c->length, len - wrote);
- rv = BIO_write (bio, c->data, deq_now);
- wrote += rv > 0 ? rv : 0;
-
- if (rv < deq_now)
- break;
- }
-
- svm_fifo_dequeue_drop (f, wrote);
-
- return wrote;
-}
-
-static int
-openssl_write_from_fifo_into_ssl (svm_fifo_t * f, SSL * ssl, u32 len)
+openssl_write_from_fifo_into_ssl (svm_fifo_t *f, SSL *ssl, u32 max_len)
{
- svm_fifo_chunk_t *c;
- int wrote = 0, rv;
- u32 deq_now;
+ int wrote = 0, rv, i = 0, len;
+ const int n_segs = 2;
+ svm_fifo_seg_t fs[n_segs];
- deq_now = clib_min (svm_fifo_max_read_chunk (f), len);
- wrote = SSL_write (ssl, svm_fifo_head (f), deq_now);
- if (wrote <= 0)
+ len = svm_fifo_segments (f, 0, fs, n_segs, max_len);
+ if (len <= 0)
return 0;
- c = svm_fifo_head_chunk (f);
- while ((c = c->next) && wrote < len)
+ while (wrote < len && i < n_segs)
{
- deq_now = clib_min (c->length, len - wrote);
- rv = SSL_write (ssl, c->data, deq_now);
- wrote += rv > 0 ? rv : 0;
-
- if (rv < deq_now)
+ rv = SSL_write (ssl, fs[i].data, fs[i].len);
+ wrote += (rv > 0) ? rv : 0;
+ if (rv < fs[i].len)
break;
+ i++;
}
- svm_fifo_dequeue_drop (f, wrote);
+ if (wrote)
+ svm_fifo_dequeue_drop (f, wrote);
return wrote;
}
-static int
-openssl_try_handshake_read (openssl_ctx_t * oc, session_t * tls_session)
-{
- svm_fifo_t *f;
- u32 deq_max;
-
- f = tls_session->rx_fifo;
- deq_max = svm_fifo_max_dequeue_cons (f);
- if (!deq_max)
- return 0;
-
- return openssl_write_from_fifo_into_bio (f, oc->wbio, deq_max);
-}
-
-static int
-openssl_try_handshake_write (openssl_ctx_t * oc, session_t * tls_session)
-{
- u32 read;
-
- if (BIO_ctrl_pending (oc->rbio) <= 0)
- return 0;
-
- read = openssl_read_from_bio_into_fifo (tls_session->tx_fifo, oc->rbio);
- if (read)
- tls_add_vpp_q_tx_evt (tls_session);
-
- return read;
-}
-
#ifdef HAVE_OPENSSL_ASYNC
static int
openssl_check_async_status (tls_ctx_t * ctx, openssl_resume_handler * handler,
{
ctx->resume = 0;
}
- else if (!openssl_try_handshake_read (oc, tls_session))
+ else if (!svm_fifo_max_dequeue_cons (tls_session->rx_fifo))
break;
rv = SSL_do_handshake (oc->ssl);
return -1;
}
- openssl_try_handshake_write (oc, tls_session);
-
- if (err != SSL_ERROR_WANT_WRITE)
+ if (err != SSL_ERROR_WANT_WRITE && err != SSL_ERROR_WANT_READ)
break;
}
TLS_DBG (2, "tls state for %u is %s", oc->openssl_ctx_index,
}
static inline int
-openssl_ctx_write (tls_ctx_t * ctx, session_t * app_session, u32 max_write)
+openssl_ctx_write (tls_ctx_t * ctx, session_t * app_session,
+ transport_send_params_t * sp)
{
openssl_ctx_t *oc = (openssl_ctx_t *) ctx;
- int wrote = 0, read, max_buf = 4 * TLS_CHUNK_SIZE, max_space;
- u32 deq_max, to_write;
- session_t *tls_session;
+ u32 deq_max, space, enq_buf;
+ session_t *ts;
+ int wrote = 0;
svm_fifo_t *f;
+ ts = session_get_from_handle (ctx->tls_session_handle);
+ space = svm_fifo_max_enqueue_prod (ts->tx_fifo);
+ /* Leave a bit of extra space for tls ctrl data, if any needed */
+ space = clib_max ((int) space - TLSO_CTRL_BYTES, 0);
+
f = app_session->tx_fifo;
deq_max = svm_fifo_max_dequeue_cons (f);
+ deq_max = clib_min (deq_max, space);
if (!deq_max)
goto check_tls_fifo;
- deq_max = clib_min (deq_max, max_write);
-
- /* Figure out how much data to write */
- max_space = max_buf - BIO_ctrl_pending (oc->rbio);
- max_space = (max_space < 0) ? 0 : max_space;
- to_write = clib_min (deq_max, (u32) max_space);
+ deq_max = clib_min (deq_max, sp->max_burst_size);
- wrote = openssl_write_from_fifo_into_ssl (f, oc->ssl, to_write);
+ wrote = openssl_write_from_fifo_into_ssl (f, oc->ssl, deq_max);
if (!wrote)
goto check_tls_fifo;
check_tls_fifo:
- if (BIO_ctrl_pending (oc->rbio) <= 0)
- return wrote;
-
- tls_session = session_get_from_handle (ctx->tls_session_handle);
-
- read = openssl_read_from_bio_into_fifo (tls_session->tx_fifo, oc->rbio);
- if (!read)
+ /* Deschedule and wait for deq notification if fifo is almost full */
+ enq_buf = clib_min (svm_fifo_size (ts->tx_fifo) / 2, TLSO_MIN_ENQ_SPACE);
+ if (space < wrote + enq_buf)
{
- /* Request tx reschedule of the app session */
- app_session->flags |= SESSION_F_CUSTOM_TX;
- return wrote;
+ svm_fifo_add_want_deq_ntf (ts->tx_fifo, SVM_FIFO_WANT_DEQ_NOTIF);
+ transport_connection_deschedule (&ctx->connection);
+ sp->flags |= TRANSPORT_SND_F_DESCHED;
}
-
- tls_add_vpp_q_tx_evt (tls_session);
-
- if (BIO_ctrl_pending (oc->rbio) > 0)
+ else
+ /* Request tx reschedule of the app session */
app_session->flags |= SESSION_F_CUSTOM_TX;
- else if (ctx->app_closed)
- openssl_confirm_app_close (ctx);
return wrote;
}
static inline int
openssl_ctx_read (tls_ctx_t * ctx, session_t * tls_session)
{
- int read, wrote = 0, max_space, max_buf = 4 * TLS_CHUNK_SIZE;
openssl_ctx_t *oc = (openssl_ctx_t *) ctx;
- u32 deq_max, to_write;
session_t *app_session;
+ int read, wrote = 0;
svm_fifo_t *f;
if (PREDICT_FALSE (SSL_in_init (oc->ssl)))
{
if (openssl_ctx_handshake_rx (ctx, tls_session) < 0)
return 0;
- else
- goto check_app_fifo;
- }
-
- f = tls_session->rx_fifo;
-
- deq_max = svm_fifo_max_dequeue_cons (f);
- max_space = max_buf - BIO_ctrl_pending (oc->wbio);
- max_space = max_space < 0 ? 0 : max_space;
- to_write = clib_min (deq_max, max_space);
- if (!to_write)
- goto check_app_fifo;
-
- wrote = openssl_write_from_fifo_into_bio (f, oc->wbio, to_write);
- if (!wrote)
- {
- tls_add_vpp_q_builtin_rx_evt (tls_session);
- goto check_app_fifo;
}
- if (svm_fifo_max_dequeue_cons (f))
- tls_add_vpp_q_builtin_rx_evt (tls_session);
-
-check_app_fifo:
-
- if (BIO_ctrl_pending (oc->wbio) <= 0)
- return wrote;
-
app_session = session_get_from_handle (ctx->app_session_handle);
f = app_session->rx_fifo;
read = openssl_read_from_ssl_into_fifo (f, oc->ssl);
- if (!read)
- {
- tls_add_vpp_q_builtin_rx_evt (tls_session);
- return wrote;
- }
/* If handshake just completed, session may still be in accepting state */
- if (app_session->session_state >= SESSION_STATE_READY)
+ if (read && app_session->session_state >= SESSION_STATE_READY)
tls_notify_app_enqueue (ctx, app_session);
+
if (SSL_pending (oc->ssl) > 0)
tls_add_vpp_q_builtin_rx_evt (tls_session);
long flags = SSL_OP_NO_SSLv2 | SSL_OP_NO_SSLv3 | SSL_OP_NO_COMPRESSION;
openssl_ctx_t *oc = (openssl_ctx_t *) ctx;
openssl_main_t *om = &openssl_main;
- session_t *tls_session;
const SSL_METHOD *method;
int rv, err;
return -1;
}
- oc->rbio = BIO_new (BIO_s_mem ());
- oc->wbio = BIO_new (BIO_s_mem ());
-
- BIO_set_mem_eof_return (oc->rbio, -1);
- BIO_set_mem_eof_return (oc->wbio, -1);
+ oc->rbio = BIO_new_tls (ctx->tls_session_handle);
+ oc->wbio = BIO_new_tls (ctx->tls_session_handle);
SSL_set_bio (oc->ssl, oc->wbio, oc->rbio);
SSL_set_connect_state (oc->ssl);
TLS_DBG (1, "Initiating handshake for [%u]%u", ctx->c_thread_index,
oc->openssl_ctx_index);
- tls_session = session_get_from_handle (ctx->tls_session_handle);
-
#ifdef HAVE_OPENSSL_ASYNC
+ session_t *tls_session = session_get_from_handle (ctx->tls_session_handle);
vpp_tls_async_init_event (ctx, openssl_ctx_handshake_rx, tls_session);
#endif
while (1)
{
rv = SSL_do_handshake (oc->ssl);
err = SSL_get_error (oc->ssl, rv);
- openssl_try_handshake_write (oc, tls_session);
#ifdef HAVE_OPENSSL_ASYNC
if (err == SSL_ERROR_WANT_ASYNC)
{
openssl_ctx_t *oc = (openssl_ctx_t *) ctx;
u32 olc_index = ctx->tls_ssl_ctx;
openssl_listen_ctx_t *olc;
- session_t *tls_session;
int rv, err;
/* Start a new connection */
return -1;
}
- oc->rbio = BIO_new (BIO_s_mem ());
- oc->wbio = BIO_new (BIO_s_mem ());
-
- BIO_set_mem_eof_return (oc->rbio, -1);
- BIO_set_mem_eof_return (oc->wbio, -1);
+ oc->rbio = BIO_new_tls (ctx->tls_session_handle);
+ oc->wbio = BIO_new_tls (ctx->tls_session_handle);
SSL_set_bio (oc->ssl, oc->wbio, oc->rbio);
SSL_set_accept_state (oc->ssl);
TLS_DBG (1, "Initiating handshake for [%u]%u", ctx->c_thread_index,
oc->openssl_ctx_index);
- tls_session = session_get_from_handle (ctx->tls_session_handle);
#ifdef HAVE_OPENSSL_ASYNC
+ session_t *tls_session = session_get_from_handle (ctx->tls_session_handle);
vpp_tls_async_init_event (ctx, openssl_ctx_handshake_rx, tls_session);
#endif
while (1)
{
rv = SSL_do_handshake (oc->ssl);
err = SSL_get_error (oc->ssl, rv);
- openssl_try_handshake_write (oc, tls_session);
#ifdef HAVE_OPENSSL_ASYNC
if (err == SSL_ERROR_WANT_ASYNC)
{
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