case TRANSPORT_PROTO_QUIC:
s = format (s, "QUIC");
break;
+ case TRANSPORT_PROTO_DTLS:
+ s = format (s, "DTLS");
+ break;
default:
s = format (s, "UNKNOWN");
break;
if (ctrl->fd < 0)
vtfail ("vppcom_session_create()", ctrl->fd);
- if (vcm->proto == VPPCOM_PROTO_TLS || vcm->proto == VPPCOM_PROTO_QUIC)
+ if (vcm->proto == VPPCOM_PROTO_TLS || vcm->proto == VPPCOM_PROTO_QUIC ||
+ vcm->proto == VPPCOM_PROTO_DTLS)
{
vppcom_cert_key_pair_t ckpair;
uint32_t ckp_len;
vppcom_session_attr (wrk->listen_fd, VPPCOM_ATTR_SET_CONNECTED, 0, 0);
}
- if (vsm->cfg.proto == VPPCOM_PROTO_TLS
- || vsm->cfg.proto == VPPCOM_PROTO_QUIC)
+ if (vsm->cfg.proto == VPPCOM_PROTO_TLS ||
+ vsm->cfg.proto == VPPCOM_PROTO_QUIC ||
+ vsm->cfg.proto == VPPCOM_PROTO_DTLS)
{
vppcom_cert_key_pair_t ckpair;
uint32_t ckp_len;
tls_openssl.c
tls_openssl_api.c
tls_async.c
+ dtls_bio.c
API_FILES
tls_openssl.api
--- /dev/null
+/*
+ * Copyright (c) 2021 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <openssl/bio.h>
+#include <openssl/err.h>
+
+#include <vnet/session/session.h>
+#include <vnet/session/application_interface.h>
+
+static inline session_t *
+bio_session (BIO *bio)
+{
+ return session_get_from_handle (pointer_to_uword (BIO_get_data (bio)));
+}
+
+static int
+bio_dtls_alloc (BIO *bio)
+{
+ BIO_set_init (bio, 0);
+ BIO_set_data (bio, 0);
+ BIO_set_flags (bio, 0);
+ BIO_set_shutdown (bio, 0);
+ return 1;
+}
+
+static int
+bio_dtls_free (BIO *bio)
+{
+ if (!bio)
+ return 0;
+
+ if (BIO_get_shutdown (bio))
+ {
+ if (BIO_get_init (bio))
+ session_close (bio_session (bio));
+ BIO_set_init (bio, 0);
+ BIO_set_flags (bio, 0);
+ }
+ return 1;
+}
+
+static int
+bio_dtls_read (BIO *b, char *out, int outl)
+{
+ app_session_transport_t at;
+ session_t *s;
+ int rv;
+
+ if (PREDICT_FALSE (!out))
+ return 0;
+
+ s = bio_session (b);
+ if (!s)
+ {
+ clib_warning ("no session");
+ errno = EBADFD;
+ return -1;
+ }
+
+ rv = app_recv_dgram_raw (s->rx_fifo, (u8 *) out, outl, &at,
+ 0 /* clear evt */, 0 /* peek */);
+
+ if (rv < 0)
+ {
+ BIO_set_retry_read (b);
+ errno = EAGAIN;
+ return -1;
+ }
+
+ if (svm_fifo_is_empty_cons (s->rx_fifo))
+ svm_fifo_unset_event (s->rx_fifo);
+
+ BIO_clear_retry_flags (b);
+
+ return rv;
+}
+
+static int
+bio_dtls_write (BIO *b, const char *in, int inl)
+{
+ app_session_transport_t at = { 0 };
+ svm_msg_q_t *mq;
+ session_t *s;
+ int rv;
+
+ if (PREDICT_FALSE (!in))
+ return 0;
+
+ s = bio_session (b);
+ if (!s)
+ {
+ clib_warning ("no session");
+ errno = EBADFD;
+ return -1;
+ }
+
+ mq = session_main_get_vpp_event_queue (s->thread_index);
+ rv = app_send_dgram_raw (s->tx_fifo, &at, mq, (u8 *) in, inl,
+ SESSION_IO_EVT_TX, 1 /* do_evt */, 0 /* noblock */);
+
+ if (rv < 0)
+ {
+ BIO_set_retry_read (b);
+ errno = EAGAIN;
+ return -1;
+ }
+
+ BIO_clear_retry_flags (b);
+
+ return rv;
+}
+
+static int
+dtls_dgram_overhead (BIO *b)
+{
+ session_t *s = bio_session (b);
+ if (session_type_is_ip4 (s->session_type))
+ /* 20B ip 8B udp */
+ return 28;
+ else
+ /* 40B ip 8B udp */
+ return 48;
+}
+
+static u16
+dtls_dgram_mss (BIO *b)
+{
+ session_t *s = bio_session (b);
+ transport_send_params_t sp;
+
+ transport_connection_snd_params (session_get_transport (s), &sp);
+
+ return sp.snd_mss;
+}
+
+long
+bio_dtls_ctrl (BIO *b, int cmd, long larg, void *parg)
+{
+ long ret = 1;
+
+ switch (cmd)
+ {
+ case BIO_C_SET_FD:
+ os_panic ();
+ break;
+ case BIO_C_GET_FD:
+ os_panic ();
+ break;
+ case BIO_CTRL_GET_CLOSE:
+ ret = BIO_get_shutdown (b);
+ break;
+ case BIO_CTRL_SET_CLOSE:
+ BIO_set_shutdown (b, (int) larg);
+ break;
+ case BIO_CTRL_PENDING:
+ case BIO_CTRL_WPENDING:
+ ret = 0;
+ break;
+ case BIO_CTRL_DUP:
+ case BIO_CTRL_FLUSH:
+ ret = 1;
+ break;
+ case BIO_CTRL_DGRAM_QUERY_MTU:
+ ret = dtls_dgram_mss (b);
+ break;
+ case BIO_CTRL_DGRAM_SET_MTU:
+ ret = 0;
+ break;
+ case BIO_CTRL_DGRAM_SET_NEXT_TIMEOUT:
+ ret = 0;
+ break;
+ case BIO_CTRL_DGRAM_GET_MTU_OVERHEAD:
+ ret = dtls_dgram_overhead (b);
+ break;
+ default:
+ ret = 0;
+ break;
+ }
+ return ret;
+}
+
+BIO *
+BIO_new_dtls (session_handle_t sh)
+{
+ static BIO_METHOD *dtls_bio_method;
+ BIO *b;
+
+ if (!dtls_bio_method)
+ {
+ dtls_bio_method = BIO_meth_new (BIO_TYPE_SOCKET, "dtls_bio");
+ BIO_meth_set_write (dtls_bio_method, bio_dtls_write);
+ BIO_meth_set_read (dtls_bio_method, bio_dtls_read);
+ BIO_meth_set_create (dtls_bio_method, bio_dtls_alloc);
+ BIO_meth_set_destroy (dtls_bio_method, bio_dtls_free);
+ BIO_meth_set_ctrl (dtls_bio_method, bio_dtls_ctrl);
+ }
+
+ b = BIO_new (dtls_bio_method);
+
+ /* Initialize the BIO */
+ BIO_set_data (b, uword_to_pointer (sh, void *));
+ BIO_set_init (b, 1);
+
+ return b;
+}
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
#include <vnet/session/session_types.h>
BIO *BIO_new_tls (session_handle_t sh);
+BIO *BIO_new_dtls (session_handle_t sh);
#endif /* SRC_PLUGINS_TLSOPENSSL_TLS_BIO_H_ */
#include <vnet/tls/tls.h>
#include <ctype.h>
#include <tlsopenssl/tls_openssl.h>
-#include <tlsopenssl/tls_bio.h>
+#include <tlsopenssl/tls_bios.h>
#define MAX_CRYPTO_LEN 64
openssl_main_t openssl_main;
+
static u32
-openssl_ctx_alloc (void)
+openssl_ctx_alloc_w_thread (u32 thread_index)
{
- u8 thread_index = vlib_get_thread_index ();
- openssl_main_t *tm = &openssl_main;
+ openssl_main_t *om = &openssl_main;
openssl_ctx_t **ctx;
- pool_get (tm->ctx_pool[thread_index], ctx);
+ pool_get (om->ctx_pool[thread_index], ctx);
if (!(*ctx))
*ctx = clib_mem_alloc (sizeof (openssl_ctx_t));
(*ctx)->ctx.c_thread_index = thread_index;
(*ctx)->ctx.tls_ctx_engine = CRYPTO_ENGINE_OPENSSL;
(*ctx)->ctx.app_session_handle = SESSION_INVALID_HANDLE;
- (*ctx)->openssl_ctx_index = ctx - tm->ctx_pool[thread_index];
+ (*ctx)->openssl_ctx_index = ctx - om->ctx_pool[thread_index];
return ((*ctx)->openssl_ctx_index);
}
+static u32
+openssl_ctx_alloc (void)
+{
+ return openssl_ctx_alloc_w_thread (vlib_get_thread_index ());
+}
+
static void
openssl_ctx_free (tls_ctx_t * ctx)
{
oc->openssl_ctx_index);
}
+static void *
+openssl_ctx_detach (tls_ctx_t *ctx)
+{
+ openssl_ctx_t *oc = (openssl_ctx_t *) ctx, *oc_copy;
+
+ oc_copy = clib_mem_alloc (sizeof (*oc_copy));
+ clib_memcpy (oc_copy, oc, sizeof (*oc));
+
+ return oc_copy;
+}
+
+static u32
+openssl_ctx_attach (u32 thread_index, void *ctx_ptr)
+{
+ openssl_main_t *om = &openssl_main;
+ session_handle_t sh;
+ openssl_ctx_t **oc;
+
+ pool_get (om->ctx_pool[thread_index], oc);
+ /* Free the old instance instead of looking for an empty spot */
+ if (*oc)
+ clib_mem_free (*oc);
+
+ *oc = ctx_ptr;
+ (*oc)->openssl_ctx_index = oc - om->ctx_pool[thread_index];
+ (*oc)->ctx.c_thread_index = thread_index;
+
+ sh = (*oc)->ctx.tls_session_handle;
+ BIO_set_data ((*oc)->rbio, uword_to_pointer (sh, void *));
+ BIO_set_data ((*oc)->wbio, uword_to_pointer (sh, void *));
+
+ return ((*oc)->openssl_ctx_index);
+}
+
tls_ctx_t *
openssl_ctx_get (u32 ctx_index)
{
session_transport_closed_notify (&ctx->connection);
}
-static inline int
-openssl_ctx_write (tls_ctx_t * ctx, session_t * app_session,
- transport_send_params_t * sp)
+static int
+openssl_ctx_write_tls (tls_ctx_t *ctx, session_t *app_session,
+ transport_send_params_t *sp)
{
openssl_ctx_t *oc = (openssl_ctx_t *) ctx;
u32 deq_max, space, enq_buf;
return wrote;
}
+static int
+openssl_ctx_write_dtls (tls_ctx_t *ctx, session_t *app_session,
+ transport_send_params_t *sp)
+{
+ openssl_main_t *om = &openssl_main;
+ openssl_ctx_t *oc = (openssl_ctx_t *) ctx;
+ session_dgram_pre_hdr_t hdr;
+ session_t *us;
+ int wrote, rv;
+ u32 read = 0, to_deq, dgram_sz;
+ u8 *buf;
+
+ us = session_get_from_handle (ctx->tls_session_handle);
+ to_deq = svm_fifo_max_dequeue_cons (app_session->tx_fifo);
+ buf = om->tx_bufs[ctx->c_thread_index];
+
+ while (to_deq > 0)
+ {
+ /* Peeking only pre-header dgram because the session is connected */
+ rv = svm_fifo_peek (app_session->tx_fifo, 0, sizeof (hdr), (u8 *) &hdr);
+ ASSERT (rv == sizeof (hdr) && hdr.data_length < vec_len (buf));
+ ASSERT (to_deq >= hdr.data_length + SESSION_CONN_HDR_LEN);
+
+ dgram_sz = hdr.data_length + SESSION_CONN_HDR_LEN;
+ if (svm_fifo_max_enqueue_prod (us->tx_fifo) < dgram_sz + TLSO_CTRL_BYTES)
+ {
+ svm_fifo_add_want_deq_ntf (us->tx_fifo, SVM_FIFO_WANT_DEQ_NOTIF);
+ transport_connection_deschedule (&ctx->connection);
+ sp->flags |= TRANSPORT_SND_F_DESCHED;
+ goto done;
+ }
+
+ rv = svm_fifo_peek (app_session->tx_fifo, SESSION_CONN_HDR_LEN,
+ hdr.data_length, buf);
+ ASSERT (rv == hdr.data_length);
+ svm_fifo_dequeue_drop (app_session->tx_fifo, dgram_sz);
+
+ wrote = SSL_write (oc->ssl, buf, rv);
+ ASSERT (wrote > 0);
+
+ read += rv;
+ to_deq -= dgram_sz;
+ }
+
+done:
+
+ if (svm_fifo_needs_deq_ntf (app_session->tx_fifo, read))
+ session_dequeue_notify (app_session);
+
+ if (read)
+ tls_add_vpp_q_tx_evt (us);
+
+ if (PREDICT_FALSE (ctx->app_closed &&
+ !svm_fifo_max_enqueue_prod (us->rx_fifo)))
+ openssl_confirm_app_close (ctx);
+
+ return read;
+}
+
+static inline int
+openssl_ctx_write (tls_ctx_t *ctx, session_t *app_session,
+ transport_send_params_t *sp)
+{
+ if (ctx->tls_type == TRANSPORT_PROTO_TLS)
+ return openssl_ctx_write_tls (ctx, app_session, sp);
+ else
+ return openssl_ctx_write_dtls (ctx, app_session, sp);
+}
+
static inline int
-openssl_ctx_read (tls_ctx_t * ctx, session_t * tls_session)
+openssl_ctx_read_tls (tls_ctx_t *ctx, session_t *tls_session)
{
openssl_ctx_t *oc = (openssl_ctx_t *) ctx;
session_t *app_session;
return wrote;
}
+static inline int
+openssl_ctx_read_dtls (tls_ctx_t *ctx, session_t *us)
+{
+ openssl_main_t *om = &openssl_main;
+ openssl_ctx_t *oc = (openssl_ctx_t *) ctx;
+ session_dgram_hdr_t hdr;
+ session_t *app_session;
+ u32 wrote = 0;
+ int read, rv;
+ u8 *buf;
+
+ if (PREDICT_FALSE (SSL_in_init (oc->ssl)))
+ {
+ u32 us_index = us->session_index;
+ if (openssl_ctx_handshake_rx (ctx, us) < 0)
+ return 0;
+ /* Session pool might grow when allocating the app's session */
+ us = session_get (us_index, ctx->c_thread_index);
+ }
+
+ buf = om->rx_bufs[ctx->c_thread_index];
+ app_session = session_get_from_handle (ctx->app_session_handle);
+ svm_fifo_fill_chunk_list (app_session->rx_fifo);
+
+ while (svm_fifo_max_dequeue_cons (us->rx_fifo) > 0)
+ {
+ if (svm_fifo_max_enqueue_prod (app_session->rx_fifo) < DTLSO_MAX_DGRAM)
+ {
+ tls_add_vpp_q_builtin_rx_evt (us);
+ goto done;
+ }
+
+ read = SSL_read (oc->ssl, buf, vec_len (buf));
+ if (PREDICT_FALSE (read <= 0))
+ {
+ if (read < 0)
+ tls_add_vpp_q_builtin_rx_evt (us);
+ goto done;
+ }
+ wrote += read;
+
+ hdr.data_length = read;
+ hdr.data_offset = 0;
+
+ svm_fifo_seg_t segs[2] = { { (u8 *) &hdr, sizeof (hdr) },
+ { buf, read } };
+
+ rv = svm_fifo_enqueue_segments (app_session->rx_fifo, segs, 2,
+ 0 /* allow partial */);
+ ASSERT (rv > 0);
+ }
+
+done:
+
+ /* If handshake just completed, session may still be in accepting state */
+ if (app_session->session_state >= SESSION_STATE_READY)
+ tls_notify_app_enqueue (ctx, app_session);
+
+ return wrote;
+}
+
+static inline int
+openssl_ctx_read (tls_ctx_t *ctx, session_t *ts)
+{
+ if (ctx->tls_type == TRANSPORT_PROTO_TLS)
+ return openssl_ctx_read_tls (ctx, ts);
+ else
+ return openssl_ctx_read_dtls (ctx, ts);
+}
+
static int
openssl_ctx_init_client (tls_ctx_t * ctx)
{
const SSL_METHOD *method;
int rv, err;
- method = SSLv23_client_method ();
+ method = ctx->tls_type == TRANSPORT_PROTO_TLS ? SSLv23_client_method () :
+ DTLS_client_method ();
if (method == NULL)
{
- TLS_DBG (1, "SSLv23_method returned null");
+ TLS_DBG (1, "(D)TLS_method returned null");
return -1;
}
return -1;
}
- oc->rbio = BIO_new_tls (ctx->tls_session_handle);
- oc->wbio = BIO_new_tls (ctx->tls_session_handle);
+ if (ctx->tls_type == TRANSPORT_PROTO_TLS)
+ {
+ oc->rbio = BIO_new_tls (ctx->tls_session_handle);
+ oc->wbio = BIO_new_tls (ctx->tls_session_handle);
+ }
+ else
+ {
+ oc->rbio = BIO_new_dtls (ctx->tls_session_handle);
+ oc->wbio = BIO_new_dtls (ctx->tls_session_handle);
+ }
SSL_set_bio (oc->ssl, oc->wbio, oc->rbio);
SSL_set_connect_state (oc->ssl);
return -1;
}
- method = SSLv23_method ();
+ method = lctx->tls_type == TRANSPORT_PROTO_TLS ? SSLv23_server_method () :
+ DTLS_server_method ();
ssl_ctx = SSL_CTX_new (method);
if (!ssl_ctx)
{
return -1;
}
- oc->rbio = BIO_new_tls (ctx->tls_session_handle);
- oc->wbio = BIO_new_tls (ctx->tls_session_handle);
+ if (ctx->tls_type == TRANSPORT_PROTO_TLS)
+ {
+ oc->rbio = BIO_new_tls (ctx->tls_session_handle);
+ oc->wbio = BIO_new_tls (ctx->tls_session_handle);
+ }
+ else
+ {
+ oc->rbio = BIO_new_dtls (ctx->tls_session_handle);
+ oc->wbio = BIO_new_dtls (ctx->tls_session_handle);
+ }
SSL_set_bio (oc->ssl, oc->wbio, oc->rbio);
SSL_set_accept_state (oc->ssl);
const static tls_engine_vft_t openssl_engine = {
.ctx_alloc = openssl_ctx_alloc,
+ .ctx_alloc_w_thread = openssl_ctx_alloc_w_thread,
.ctx_free = openssl_ctx_free,
+ .ctx_attach = openssl_ctx_attach,
+ .ctx_detach = openssl_ctx_detach,
.ctx_get = openssl_ctx_get,
.ctx_get_w_thread = openssl_ctx_get_w_thread,
.ctx_init_server = openssl_ctx_init_server,
vlib_thread_main_t *vtm = vlib_get_thread_main ();
openssl_main_t *om = &openssl_main;
clib_error_t *error = 0;
- u32 num_threads;
+ u32 num_threads, i;
error = tls_openssl_api_init (vm);
num_threads = 1 /* main thread */ + vtm->n_threads;
}
vec_validate (om->ctx_pool, num_threads - 1);
-
+ vec_validate (om->rx_bufs, num_threads - 1);
+ vec_validate (om->tx_bufs, num_threads - 1);
+ for (i = 0; i < num_threads; i++)
+ {
+ vec_validate (om->rx_bufs[i], DTLSO_MAX_DGRAM);
+ vec_validate (om->tx_bufs[i], DTLSO_MAX_DGRAM);
+ }
tls_register_engine (&openssl_engine, CRYPTO_ENGINE_OPENSSL);
om->engine_init = 0;
* limitations under the License.
*/
+#ifndef SRC_PLUGINS_TLSOPENSSL_TLS_OPENSSL_H_
+#define SRC_PLUGINS_TLSOPENSSL_TLS_OPENSSL_H_
+
#include <openssl/ssl.h>
#include <openssl/conf.h>
#include <openssl/err.h>
#define TLSO_CTRL_BYTES 1000
#define TLSO_MIN_ENQ_SPACE (1 << 16)
+#define DTLSO_MAX_DGRAM 2000
+
typedef struct tls_ctx_openssl_
{
tls_ctx_t ctx; /**< First */
openssl_ctx_t ***ctx_pool;
openssl_listen_ctx_t *lctx_pool;
+ u8 **rx_bufs;
+ u8 **tx_bufs;
+
/* API message ID base */
u16 msg_id_base;
int tls_openssl_set_ciphers (char *ciphers);
int vpp_openssl_is_inflight (tls_ctx_t * ctx);
+#endif /* SRC_PLUGINS_TLSOPENSSL_TLS_OPENSSL_H_ */
+
/*
* fd.io coding-style-patch-verification: ON
*
vcl_session_has_crypto (vcl_session_t *s)
{
return (s->session_type == VPPCOM_PROTO_TLS ||
- s->session_type == VPPCOM_PROTO_QUIC);
+ s->session_type == VPPCOM_PROTO_QUIC ||
+ s->session_type == VPPCOM_PROTO_DTLS);
}
static inline u8
static inline int
vcl_proto_is_dgram (uint8_t proto)
{
- return proto == VPPCOM_PROTO_UDP;
+ return proto == VPPCOM_PROTO_UDP || proto == VPPCOM_PROTO_DTLS;
}
static inline u8
*proto = VPPCOM_PROTO_QUIC;
else if (!strcmp (proto_str, "quic"))
*proto = VPPCOM_PROTO_QUIC;
+ else if (!strcmp (proto_str, "DTLS"))
+ *proto = VPPCOM_PROTO_DTLS;
+ else if (!strcmp (proto_str, "dtls"))
+ *proto = VPPCOM_PROTO_DTLS;
else
return 1;
return 0;
case VPPCOM_PROTO_QUIC:
proto_str = "QUIC";
break;
+ case VPPCOM_PROTO_DTLS:
+ proto_str = "DTLS";
+ break;
default:
proto_str = "UNKNOWN";
break;
#define VPPCOM_ENV_VPP_API_SOCKET "VCL_VPP_API_SOCKET"
#define VPPCOM_ENV_VPP_SAPI_SOCKET "VCL_VPP_SAPI_SOCKET"
-typedef enum
-{
- VPPCOM_PROTO_TCP = 0,
- VPPCOM_PROTO_UDP,
- VPPCOM_PROTO_NONE,
- VPPCOM_PROTO_TLS,
- VPPCOM_PROTO_QUIC,
-} vppcom_proto_t;
-
-typedef enum
-{
- VPPCOM_IS_IP6 = 0,
- VPPCOM_IS_IP4,
-} vppcom_is_ip4_t;
-
-typedef struct vppcom_endpt_t_
-{
- uint8_t is_cut_thru;
- uint8_t is_ip4;
- uint8_t *ip;
- uint16_t port;
- uint64_t parent_handle;
-} vppcom_endpt_t;
+ typedef enum
+ {
+ VPPCOM_PROTO_TCP = 0,
+ VPPCOM_PROTO_UDP,
+ VPPCOM_PROTO_NONE,
+ VPPCOM_PROTO_TLS,
+ VPPCOM_PROTO_QUIC,
+ VPPCOM_PROTO_DTLS,
+ } vppcom_proto_t;
+
+ typedef enum
+ {
+ VPPCOM_IS_IP6 = 0,
+ VPPCOM_IS_IP4,
+ } vppcom_is_ip4_t;
+
+ typedef struct vppcom_endpt_t_
+ {
+ uint8_t is_cut_thru;
+ uint8_t is_ip4;
+ uint8_t *ip;
+ uint16_t port;
+ uint64_t parent_handle;
+ } vppcom_endpt_t;
typedef uint32_t vcl_session_handle_t;
smm->evt_qs_segment_size = 1 << 20;
#endif
- smm->last_transport_proto_type = TRANSPORT_PROTO_QUIC;
+ smm->last_transport_proto_type = TRANSPORT_PROTO_DTLS;
return 0;
}
STATIC_ASSERT (sizeof (transport_connection_t) <= 128,
"moved into 3rd cache line");
-#define foreach_transport_proto \
- _(TCP, "tcp", "T") \
- _(UDP, "udp", "U") \
- _(NONE, "ct", "C") \
- _(TLS, "tls", "J") \
- _(QUIC, "quic", "Q") \
+#define foreach_transport_proto \
+ _ (TCP, "tcp", "T") \
+ _ (UDP, "udp", "U") \
+ _ (NONE, "ct", "C") \
+ _ (TLS, "tls", "J") \
+ _ (QUIC, "quic", "Q") \
+ _ (DTLS, "dtls", "D")
typedef enum _transport_proto
{
}
if (err)
- goto failed;
+ {
+ /* Free app session pre-allocated when transport was established */
+ if (ctx->tls_type == TRANSPORT_PROTO_TLS)
+ session_free (session_get (ctx->c_s_index, ctx->c_thread_index));
+ goto failed;
+ }
+
+ /* For DTLS the app session is not preallocated because the underlying udp
+ * session might migrate to a different worker during the handshake */
+ if (ctx->tls_type == TRANSPORT_PROTO_DTLS)
+ {
+ session_type_t st;
+ app_session = session_alloc (ctx->c_thread_index);
+ app_session->session_state = SESSION_STATE_CREATED;
+ ctx->c_s_index = app_session->session_index;
+ st =
+ session_type_from_proto_and_ip (TRANSPORT_PROTO_DTLS, ctx->tcp_is_ip4);
+ app_session->session_type = st;
+ app_session->connection_index = ctx->tls_ctx_handle;
+ }
+ else
+ {
+ app_session = session_get (ctx->c_s_index, ctx->c_thread_index);
+ }
- app_session = session_get (ctx->c_s_index, ctx->c_thread_index);
app_session->app_wrk_index = ctx->parent_app_wrk_index;
- app_session->connection_index = ctx->tls_ctx_handle;
- app_session->session_type =
- session_type_from_proto_and_ip (TRANSPORT_PROTO_TLS, ctx->tcp_is_ip4);
if ((err = app_worker_init_connected (app_wrk, app_session)))
goto failed;
return 0;
failed:
- /* Free app session pre-allocated when transport was established */
- session_free (session_get (ctx->c_s_index, ctx->c_thread_index));
ctx->no_app_session = 1;
tls_disconnect (ctx->tls_ctx_handle, vlib_get_thread_index ());
return app_worker_connect_notify (app_wrk, 0, err,
return (((u32) engine_type << TLS_ENGINE_TYPE_SHIFT) | ctx_index);
}
+static inline u32
+tls_ctx_alloc_w_thread (crypto_engine_type_t engine_type, u32 thread_index)
+{
+ u32 ctx_index;
+ ctx_index = tls_vfts[engine_type].ctx_alloc_w_thread (thread_index);
+ return (((u32) engine_type << TLS_ENGINE_TYPE_SHIFT) | ctx_index);
+}
+
+static inline u32
+tls_ctx_attach (crypto_engine_type_t engine_type, u32 thread_index, void *ctx)
+{
+ u32 ctx_index;
+ ctx_index = tls_vfts[engine_type].ctx_attach (thread_index, ctx);
+ return (((u32) engine_type << TLS_ENGINE_TYPE_SHIFT) | ctx_index);
+}
+
+static inline void *
+tls_ctx_detach (tls_ctx_t *ctx)
+{
+ return tls_vfts[ctx->tls_ctx_engine].ctx_detach (ctx);
+}
+
static inline tls_ctx_t *
tls_ctx_get (u32 ctx_handle)
{
{
tls_ctx_t *ctx;
+ /* DTLS session migrating, wait for next notification */
+ if (PREDICT_FALSE (tls_session->flags & SESSION_F_IS_MIGRATING))
+ return 0;
+
ctx = tls_ctx_get (tls_session->opaque);
tls_ctx_read (ctx, tls_session);
return 0;
}
int
-tls_session_connected_callback (u32 tls_app_index, u32 ho_ctx_index,
- session_t * tls_session, session_error_t err)
+tls_session_connected_cb (u32 tls_app_index, u32 ho_ctx_index,
+ session_t *tls_session, session_error_t err)
{
session_t *app_session;
tls_ctx_t *ho_ctx, *ctx;
+ session_type_t st;
u32 ctx_handle;
ho_ctx = tls_ctx_half_open_get (ho_ctx_index);
ctx->c_flags |= TRANSPORT_CONNECTION_F_NO_LOOKUP;
TLS_DBG (1, "TCP connect for %u returned %u. New connection [%u]%x",
- ho_ctx_index, is_fail, vlib_get_thread_index (),
+ ho_ctx_index, err, vlib_get_thread_index (),
(ctx) ? ctx_handle : ~0);
ctx->tls_session_handle = session_handle (tls_session);
app_session = session_alloc (ctx->c_thread_index);
app_session->session_state = SESSION_STATE_CREATED;
ctx->c_s_index = app_session->session_index;
+ st = session_type_from_proto_and_ip (TRANSPORT_PROTO_TLS, ctx->tcp_is_ip4);
+ app_session->session_type = st;
+ app_session->connection_index = ctx->tls_ctx_handle;
+
+ return tls_ctx_init_client (ctx);
+}
+
+int
+dtls_session_connected_cb (u32 app_wrk_index, u32 ctx_handle, session_t *us,
+ session_error_t err)
+{
+ tls_ctx_t *ctx;
+
+ ctx = tls_ctx_get_w_thread (ctx_handle, 1 /* udp allocs on thread 1 */);
+
+ ctx->tls_session_handle = session_handle (us);
+ ctx->c_flags |= TRANSPORT_CONNECTION_F_NO_LOOKUP;
+ us->opaque = ctx_handle;
+
+ /* We don't preallocate the app session because the udp session might
+ * actually migrate to a different worker at the end of the handshake */
return tls_ctx_init_client (ctx);
}
+int
+tls_session_connected_callback (u32 tls_app_index, u32 ho_ctx_index,
+ session_t *tls_session, session_error_t err)
+{
+ if (session_get_transport_proto (tls_session) == TRANSPORT_PROTO_TCP)
+ return tls_session_connected_cb (tls_app_index, ho_ctx_index, tls_session,
+ err);
+ else
+ return dtls_session_connected_cb (tls_app_index, ho_ctx_index, tls_session,
+ err);
+}
+
static void
tls_app_session_cleanup (session_t * s, session_cleanup_ntf_t ntf)
{
tls_ctx_free (ctx);
}
-/* *INDENT-OFF* */
+static void
+dtls_migrate_udp (void *arg)
+{
+ tls_ctx_t *ctx = (tls_ctx_t *) arg;
+ u32 ctx_handle, thread_index;
+ session_t *us;
+
+ thread_index = session_thread_from_handle (ctx->tls_session_handle);
+ ASSERT (thread_index == vlib_get_thread_index ());
+
+ ctx_handle = tls_ctx_attach (ctx->tls_ctx_engine, thread_index, ctx);
+ ctx = tls_ctx_get_w_thread (ctx_handle, thread_index);
+ ctx->tls_ctx_handle = ctx_handle;
+
+ us = session_get_from_handle (ctx->tls_session_handle);
+ us->opaque = ctx_handle;
+ us->flags &= ~SESSION_F_IS_MIGRATING;
+ if (svm_fifo_max_dequeue (us->tx_fifo))
+ session_send_io_evt_to_thread (us->tx_fifo, SESSION_IO_EVT_TX);
+}
+
+static void
+dtls_session_migrate_callback (session_t *us, session_handle_t new_sh)
+{
+ u32 new_thread = session_thread_from_handle (new_sh);
+ tls_ctx_t *ctx;
+
+ /* Migrate dtls context to new thread */
+ ctx = tls_ctx_get_w_thread (us->opaque, us->thread_index);
+ ctx->tls_session_handle = new_sh;
+ ctx = tls_ctx_detach (ctx);
+ ctx->is_migrated = 1;
+
+ session_send_rpc_evt_to_thread (new_thread, dtls_migrate_udp, (void *) ctx);
+}
+
static session_cb_vft_t tls_app_cb_vft = {
.session_accept_callback = tls_session_accept_callback,
.session_disconnect_callback = tls_session_disconnect_callback,
.del_segment_callback = tls_del_segment_callback,
.builtin_app_rx_callback = tls_app_rx_callback,
.builtin_app_tx_callback = tls_app_tx_callback,
+ .session_migrate_callback = dtls_session_migrate_callback,
.session_cleanup_callback = tls_app_session_cleanup,
};
-/* *INDENT-ON* */
int
tls_connect (transport_endpoint_cfg_t * tep)
{
vnet_connect_args_t _cargs = { {}, }, *cargs = &_cargs;
- session_endpoint_cfg_t *sep;
crypto_engine_type_t engine_type;
+ session_endpoint_cfg_t *sep;
tls_main_t *tm = &tls_main;
app_worker_t *app_wrk;
application_t *app;
ctx->parent_app_api_context = sep->opaque;
ctx->tcp_is_ip4 = sep->is_ip4;
ctx->ckpair_index = sep->ckpair_index;
+ ctx->tls_type = sep->transport_proto;
if (sep->hostname)
{
ctx->srv_hostname = format (0, "%v", sep->hostname);
args->sep_ext = *sep;
args->sep_ext.ns_index = app->ns_index;
args->sep_ext.transport_proto = TRANSPORT_PROTO_TCP;
+ if (sep->transport_proto == TRANSPORT_PROTO_DTLS)
+ {
+ args->sep_ext.transport_proto = TRANSPORT_PROTO_UDP;
+ args->sep_ext.transport_flags = TRANSPORT_CFG_F_CONNECTED;
+ }
if (vnet_listen (args))
return -1;
lctx->tcp_is_ip4 = sep->is_ip4;
lctx->tls_ctx_engine = engine_type;
lctx->ckpair_index = sep->ckpair_index;
+ lctx->tls_type = sep->transport_proto;
if (tls_vfts[engine_type].ctx_start_listen (lctx))
{
sep.fib_index = lc->fib_index;
sep.port = lc->lcl_port;
sep.is_ip4 = lc->is_ip4;
- sep.transport_proto = TRANSPORT_PROTO_TLS;
+ sep.transport_proto = lctx->tls_type;
clib_memcpy (&sep.ip, &lc->lcl_ip, sizeof (lc->lcl_ip));
session_lookup_del_session_endpoint2 (&sep);
{
u32 tcp_si, tcp_ti, ctx_index, ctx_engine;
tls_ctx_t *ctx = va_arg (*args, tls_ctx_t *);
+ char *proto;
+ proto = ctx->tls_type == TRANSPORT_PROTO_TLS ? "TLS" : "DTLS";
session_parse_handle (ctx->tls_session_handle, &tcp_si, &tcp_ti);
tls_ctx_parse_handle (ctx->tls_ctx_handle, &ctx_index, &ctx_engine);
- s = format (s, "[%d:%d][TLS] app_wrk %u index %u engine %u tcp %d:%d",
- ctx->c_thread_index, ctx->c_s_index,
- ctx->parent_app_wrk_index, ctx_index,
- ctx_engine, tcp_ti, tcp_si);
+ s =
+ format (s, "[%d:%d][%s] app_wrk %u index %u engine %u ts %d:%d",
+ ctx->c_thread_index, ctx->c_s_index, proto,
+ ctx->parent_app_wrk_index, ctx_index, ctx_engine, tcp_ti, tcp_si);
return s;
}
session_t *tls_listener;
app_listener_t *al;
tls_ctx_t *ctx;
+ char *proto;
ctx = va_arg (*args, tls_ctx_t *);
+ proto = ctx->tls_type == TRANSPORT_PROTO_TLS ? "TLS" : "DTLS";
al = app_listener_get_w_handle (ctx->tls_session_handle);
tls_listener = app_listener_get_session (al);
- s = format (s, "[%d:%d][TLS] app_wrk %u engine %u tcp %d:%d",
- ctx->c_thread_index, ctx->c_s_index,
+ s = format (s, "[%d:%d][%s] app_wrk %u engine %u ts %d:%d",
+ ctx->c_thread_index, ctx->c_s_index, proto,
ctx->parent_app_wrk_index, ctx->tls_ctx_engine,
tls_listener->thread_index, tls_listener->session_index);
return 0;
}
-/* *INDENT-OFF* */
static const transport_proto_vft_t tls_proto = {
.enable = tls_enable,
.connect = tls_connect,
.service_type = TRANSPORT_SERVICE_APP,
},
};
-/* *INDENT-ON* */
+
+int
+dtls_connect (transport_endpoint_cfg_t *tep)
+{
+ vnet_connect_args_t _cargs = { {}, }, *cargs = &_cargs;
+ crypto_engine_type_t engine_type;
+ session_endpoint_cfg_t *sep;
+ tls_main_t *tm = &tls_main;
+ app_worker_t *app_wrk;
+ application_t *app;
+ tls_ctx_t *ctx;
+ u32 ctx_handle;
+ int rv;
+
+ sep = (session_endpoint_cfg_t *) tep;
+ app_wrk = app_worker_get (sep->app_wrk_index);
+ app = application_get (app_wrk->app_index);
+ engine_type = tls_get_engine_type (app->tls_engine);
+ if (engine_type == CRYPTO_ENGINE_NONE)
+ {
+ clib_warning ("No tls engine_type available");
+ return -1;
+ }
+
+ ctx_handle = tls_ctx_alloc_w_thread (engine_type, 1 /* because of udp */);
+ ctx = tls_ctx_get_w_thread (ctx_handle, 1);
+ ctx->parent_app_wrk_index = sep->app_wrk_index;
+ ctx->parent_app_api_context = sep->opaque;
+ ctx->tcp_is_ip4 = sep->is_ip4;
+ ctx->ckpair_index = sep->ckpair_index;
+ ctx->tls_type = sep->transport_proto;
+ ctx->tls_ctx_handle = ctx_handle;
+ if (sep->hostname)
+ {
+ ctx->srv_hostname = format (0, "%v", sep->hostname);
+ vec_terminate_c_string (ctx->srv_hostname);
+ }
+
+ app_worker_alloc_connects_segment_manager (app_wrk);
+ ctx->tls_ctx_engine = engine_type;
+
+ clib_memcpy_fast (&cargs->sep, sep, sizeof (session_endpoint_t));
+ cargs->sep.transport_proto = TRANSPORT_PROTO_UDP;
+ cargs->app_index = tm->app_index;
+ cargs->api_context = ctx_handle;
+ cargs->sep_ext.ns_index = app->ns_index;
+ cargs->sep_ext.transport_flags = TRANSPORT_CFG_F_CONNECTED;
+ if ((rv = vnet_connect (cargs)))
+ return rv;
+
+ TLS_DBG (1, "New DTLS connect request %x engine %d", ctx_handle,
+ engine_type);
+ return 0;
+}
+
+static void
+dtls_cleanup_callback (u32 ctx_index, u32 thread_index)
+{
+ /* No op */
+}
+
+static const transport_proto_vft_t dtls_proto = {
+ .enable = 0,
+ .connect = dtls_connect,
+ .close = tls_disconnect,
+ .start_listen = tls_start_listen,
+ .stop_listen = tls_stop_listen,
+ .get_connection = tls_connection_get,
+ .get_listener = tls_listener_get,
+ .custom_tx = tls_custom_tx_callback,
+ .cleanup = dtls_cleanup_callback,
+ .format_connection = format_tls_connection,
+ .format_half_open = format_tls_half_open,
+ .format_listener = format_tls_listener,
+ .get_transport_endpoint = tls_transport_endpoint_get,
+ .get_transport_listener_endpoint = tls_transport_listener_endpoint_get,
+ .transport_options = {
+ .name = "dtls",
+ .short_name = "D",
+ .tx_type = TRANSPORT_TX_INTERNAL,
+ .service_type = TRANSPORT_SERVICE_APP,
+ },
+};
void
tls_register_engine (const tls_engine_vft_t * vft, crypto_engine_type_t type)
FIB_PROTOCOL_IP4, ~0);
transport_register_protocol (TRANSPORT_PROTO_TLS, &tls_proto,
FIB_PROTOCOL_IP6, ~0);
+
+ transport_register_protocol (TRANSPORT_PROTO_DTLS, &dtls_proto,
+ FIB_PROTOCOL_IP4, ~0);
+ transport_register_protocol (TRANSPORT_PROTO_DTLS, &dtls_proto,
+ FIB_PROTOCOL_IP6, ~0);
return 0;
}
#ifndef SRC_VNET_TLS_TLS_H_
#define SRC_VNET_TLS_TLS_H_
-#define TLS_DEBUG 0
+#define TLS_DEBUG 0
#define TLS_DEBUG_LEVEL_CLIENT 0
#define TLS_DEBUG_LEVEL_SERVER 0
u32 listener_ctx_index;
u8 tcp_is_ip4;
u8 tls_engine_id;
+ void *migrate_ctx;
} tls_ctx_id_t;
/* *INDENT-ON* */
/* Temporary storage for session open opaque. Overwritten once
* underlying tcp connection is established */
#define parent_app_api_context c_tls_ctx_id.parent_app_api_ctx
+#define migration_ctx c_tls_ctx_id.migrate_ctx
u8 is_passive_close;
u8 resume;
u8 app_closed;
u8 no_app_session;
+ u8 is_migrated;
u8 *srv_hostname;
u32 evt_index;
u32 ckpair_index;
+ transport_proto_t tls_type;
} tls_ctx_t;
typedef struct tls_main_
typedef struct tls_engine_vft_
{
u32 (*ctx_alloc) (void);
+ u32 (*ctx_alloc_w_thread) (u32 thread_index);
void (*ctx_free) (tls_ctx_t * ctx);
+ void *(*ctx_detach) (tls_ctx_t *ctx);
+ u32 (*ctx_attach) (u32 thread_index, void *ctx);
tls_ctx_t *(*ctx_get) (u32 ctx_index);
tls_ctx_t *(*ctx_get_w_thread) (u32 ctx_index, u8 thread_index);
int (*ctx_init_client) (tls_ctx_t * ctx);
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