X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=src%2Fplugins%2Ftlsmbedtls%2Ftls_mbedtls.c;h=928b31b4a7f5b14e518f171bab6406d2683e81e7;hb=208e7dc3627385593973212fa09262d4384cc42b;hp=1bae1f726f84b634d67f20f9a5c972d02ca78ed9;hpb=d77eee64b17762bf21f8dbe0b9f955513f81f1a5;p=vpp.git

diff --git a/src/plugins/tlsmbedtls/tls_mbedtls.c b/src/plugins/tlsmbedtls/tls_mbedtls.c
index 1bae1f726f8..928b31b4a7f 100644
--- a/src/plugins/tlsmbedtls/tls_mbedtls.c
+++ b/src/plugins/tlsmbedtls/tls_mbedtls.c
@@ -28,6 +28,7 @@
 typedef struct tls_ctx_mbedtls_
 {
   tls_ctx_t ctx;			/**< First */
+  u32 mbedtls_ctx_index;
   mbedtls_ssl_context ssl;
   mbedtls_ssl_config conf;
   mbedtls_x509_crt srvcert;
@@ -40,6 +41,8 @@ typedef struct mbedtls_main_
   mbedtls_ctr_drbg_context *ctr_drbgs;
   mbedtls_entropy_context *entropy_pools;
   mbedtls_x509_crt cacert;
+  u8 **rx_bufs;
+  u8 **tx_bufs;
 } mbedtls_main_t;
 
 static mbedtls_main_t mbedtls_main;
@@ -52,7 +55,7 @@ mbedtls_calloc_fn (size_t n, size_t size)
 {
   void *ptr;
   ptr = clib_mem_alloc (n * size);
-  memset (ptr, 0, sizeof (*ptr));
+  clib_memset (ptr, 0, sizeof (*ptr));
   return ptr;
 }
 
@@ -64,23 +67,26 @@ mbedtls_free_fn (void *ptr)
 }
 #endif
 
-u32
+static u32
 mbedtls_ctx_alloc (void)
 {
   u8 thread_index = vlib_get_thread_index ();
   mbedtls_main_t *tm = &mbedtls_main;
   mbedtls_ctx_t **ctx;
 
-  pool_get (tm->ctx_pool[thread_index], ctx);
+  pool_get_aligned_safe (tm->ctx_pool[thread_index], ctx,
+			 CLIB_CACHE_LINE_BYTES);
   if (!(*ctx))
     *ctx = clib_mem_alloc (sizeof (mbedtls_ctx_t));
 
-  memset (*ctx, 0, sizeof (mbedtls_ctx_t));
+  clib_memset (*ctx, 0, sizeof (mbedtls_ctx_t));
   (*ctx)->ctx.c_thread_index = thread_index;
-  return ctx - tm->ctx_pool[thread_index];
+  (*ctx)->ctx.tls_ctx_engine = CRYPTO_ENGINE_MBEDTLS;
+  (*ctx)->mbedtls_ctx_index = ctx - tm->ctx_pool[thread_index];
+  return ((*ctx)->mbedtls_ctx_index);
 }
 
-void
+static void
 mbedtls_ctx_free (tls_ctx_t * ctx)
 {
   mbedtls_ctx_t *mc = (mbedtls_ctx_t *) ctx;
@@ -95,11 +101,12 @@ mbedtls_ctx_free (tls_ctx_t * ctx)
   mbedtls_ssl_free (&mc->ssl);
   mbedtls_ssl_config_free (&mc->conf);
 
-  pool_put_index (mbedtls_main.ctx_pool[vlib_get_thread_index ()],
-		  ctx->tls_ctx_idx);
+  vec_free (ctx->srv_hostname);
+  pool_put_index (mbedtls_main.ctx_pool[ctx->c_thread_index],
+		  mc->mbedtls_ctx_index);
 }
 
-tls_ctx_t *
+static tls_ctx_t *
 mbedtls_ctx_get (u32 ctx_index)
 {
   mbedtls_ctx_t **ctx;
@@ -108,7 +115,7 @@ mbedtls_ctx_get (u32 ctx_index)
   return &(*ctx)->ctx;
 }
 
-tls_ctx_t *
+static tls_ctx_t *
 mbedtls_ctx_get_w_thread (u32 ctx_index, u8 thread_index)
 {
   mbedtls_ctx_t **ctx;
@@ -153,7 +160,7 @@ tls_get_ctr_drbg ()
 static int
 tls_net_send (void *ctx_indexp, const unsigned char *buf, size_t len)
 {
-  stream_session_t *tls_session;
+  session_t *tls_session;
   uword ctx_index;
   tls_ctx_t *ctx;
   int rv;
@@ -161,17 +168,17 @@ tls_net_send (void *ctx_indexp, const unsigned char *buf, size_t len)
   ctx_index = pointer_to_uword (ctx_indexp);
   ctx = mbedtls_ctx_get (ctx_index);
   tls_session = session_get_from_handle (ctx->tls_session_handle);
-  rv = svm_fifo_enqueue_nowait (tls_session->server_tx_fifo, len, buf);
+  rv = svm_fifo_enqueue (tls_session->tx_fifo, len, buf);
   if (rv < 0)
     return MBEDTLS_ERR_SSL_WANT_WRITE;
-  tls_add_vpp_q_evt (tls_session->server_tx_fifo, FIFO_EVENT_APP_TX);
+  tls_add_vpp_q_tx_evt (tls_session);
   return rv;
 }
 
 static int
 tls_net_recv (void *ctx_indexp, unsigned char *buf, size_t len)
 {
-  stream_session_t *tls_session;
+  session_t *tls_session;
   uword ctx_index;
   tls_ctx_t *ctx;
   int rv;
@@ -179,7 +186,7 @@ tls_net_recv (void *ctx_indexp, unsigned char *buf, size_t len)
   ctx_index = pointer_to_uword (ctx_indexp);
   ctx = mbedtls_ctx_get (ctx_index);
   tls_session = session_get_from_handle (ctx->tls_session_handle);
-  rv = svm_fifo_dequeue_nowait (tls_session->server_rx_fifo, len, buf);
+  rv = svm_fifo_dequeue (tls_session->rx_fifo, len, buf);
   return (rv < 0) ? 0 : rv;
 }
 
@@ -233,7 +240,7 @@ mbedtls_ctx_init_client (tls_ctx_t * ctx)
       return -1;
     }
 
-  ctx_ptr = uword_to_pointer (ctx->tls_ctx_idx, void *);
+  ctx_ptr = uword_to_pointer (mc->mbedtls_ctx_index, void *);
   mbedtls_ssl_set_bio (&mc->ssl, ctx_ptr, tls_net_send, tls_net_recv, NULL);
   mbedtls_debug_set_threshold (TLS_DEBUG_LEVEL_CLIENT);
 
@@ -241,7 +248,7 @@ mbedtls_ctx_init_client (tls_ctx_t * ctx)
    * 2. Do the first 2 steps in the handshake.
    */
   TLS_DBG (1, "Initiating handshake for [%u]%u", ctx->c_thread_index,
-	   ctx->tls_ctx_idx);
+	   mc->mbedtls_ctx_index);
   while (mc->ssl.state != MBEDTLS_SSL_HANDSHAKE_OVER)
     {
       rv = mbedtls_ssl_handshake_step (&mc->ssl);
@@ -249,7 +256,19 @@ mbedtls_ctx_init_client (tls_ctx_t * ctx)
 	break;
     }
   TLS_DBG (2, "tls state for [%u]%u is %u", ctx->c_thread_index,
-	   ctx->tls_ctx_idx, mc->ssl.state);
+	   mc->mbedtls_ctx_index, mc->ssl.state);
+  return 0;
+}
+
+static int
+mbedtls_start_listen (tls_ctx_t * lctx)
+{
+  return 0;
+}
+
+static int
+mbedtls_stop_listen (tls_ctx_t * lctx)
+{
   return 0;
 }
 
@@ -258,7 +277,7 @@ mbedtls_ctx_init_server (tls_ctx_t * ctx)
 {
   mbedtls_ctx_t *mc = (mbedtls_ctx_t *) ctx;
   mbedtls_main_t *mm = &mbedtls_main;
-  application_t *app;
+  app_cert_key_pair_t *ckpair;
   void *ctx_ptr;
   int rv;
 
@@ -270,17 +289,20 @@ mbedtls_ctx_init_server (tls_ctx_t * ctx)
   /*
    * 1. Cert
    */
-  app = application_get (ctx->parent_app_index);
-  if (!app->tls_cert || !app->tls_key)
+  ckpair = app_cert_key_pair_get_if_valid (ctx->ckpair_index);
+  if (!ckpair)
+    return -1;
+
+  if (!ckpair->cert || !ckpair->key)
     {
       TLS_DBG (1, " failed\n  ! tls cert and/or key not configured %d",
-	       ctx->parent_app_index);
+	       ctx->parent_app_wrk_index);
       return -1;
     }
 
   rv = mbedtls_x509_crt_parse (&mc->srvcert,
-			       (const unsigned char *) app->tls_cert,
-			       vec_len (app->tls_cert));
+			       (const unsigned char *) ckpair->cert,
+			       vec_len (ckpair->cert));
   if (rv != 0)
     {
       TLS_DBG (1, " failed\n  !  mbedtls_x509_crt_parse returned %d", rv);
@@ -288,8 +310,8 @@ mbedtls_ctx_init_server (tls_ctx_t * ctx)
     }
 
   rv = mbedtls_pk_parse_key (&mc->pkey,
-			     (const unsigned char *) app->tls_key,
-			     vec_len (app->tls_key), NULL, 0);
+			     (const unsigned char *) ckpair->key,
+			     vec_len (ckpair->key), NULL, 0);
   if (rv != 0)
     {
       TLS_DBG (1, " failed\n  !  mbedtls_pk_parse_key returned %d", rv);
@@ -332,7 +354,7 @@ mbedtls_ctx_init_server (tls_ctx_t * ctx)
     }
 
   mbedtls_ssl_session_reset (&mc->ssl);
-  ctx_ptr = uword_to_pointer (ctx->tls_ctx_idx, void *);
+  ctx_ptr = uword_to_pointer (mc->mbedtls_ctx_index, void *);
   mbedtls_ssl_set_bio (&mc->ssl, ctx_ptr, tls_net_send, tls_net_recv, NULL);
   mbedtls_debug_set_threshold (TLS_DEBUG_LEVEL_SERVER);
 
@@ -340,7 +362,7 @@ mbedtls_ctx_init_server (tls_ctx_t * ctx)
    * 3. Start handshake state machine
    */
   TLS_DBG (1, "Initiating handshake for [%u]%u", ctx->c_thread_index,
-	   ctx->tls_ctx_idx);
+	   mc->mbedtls_ctx_index);
   while (mc->ssl.state != MBEDTLS_SSL_HANDSHAKE_OVER)
     {
       rv = mbedtls_ssl_handshake_step (&mc->ssl);
@@ -349,7 +371,7 @@ mbedtls_ctx_init_server (tls_ctx_t * ctx)
     }
 
   TLS_DBG (2, "tls state for [%u]%u is %u", ctx->c_thread_index,
-	   ctx->tls_ctx_idx, mc->ssl.state);
+	   mc->mbedtls_ctx_index, mc->ssl.state);
   return 0;
 
 exit:
@@ -357,7 +379,7 @@ exit:
 }
 
 static int
-mbedtls_handshake_rx (tls_ctx_t * ctx)
+mbedtls_ctx_handshake_rx (tls_ctx_t * ctx)
 {
   mbedtls_ctx_t *mc = (mbedtls_ctx_t *) ctx;
   u32 flags;
@@ -368,10 +390,10 @@ mbedtls_handshake_rx (tls_ctx_t * ctx)
       if (rv != 0)
 	break;
     }
-  TLS_DBG (2, "tls state for %u is %u", ctx->tls_ctx_idx, mc->ssl.state);
+  TLS_DBG (2, "tls state for %u is %u", mc->mbedtls_ctx_index, mc->ssl.state);
 
   if (mc->ssl.state != MBEDTLS_SSL_HANDSHAKE_OVER)
-    return HANDSHAKE_NOT_OVER;
+    return 0;
 
   /*
    * Handshake complete
@@ -392,32 +414,121 @@ mbedtls_handshake_rx (tls_ctx_t * ctx)
 	   * Presence of hostname enforces strict certificate verification
 	   */
 	  if (ctx->srv_hostname)
-	    return CLIENT_HANDSHAKE_FAIL;
+	    {
+	      tls_notify_app_connected (ctx, SESSION_E_TLS_HANDSHAKE);
+	      return -1;
+	    }
 	}
-      rv = CLIENT_HANDSHAKE_OK;
+      tls_notify_app_connected (ctx, SESSION_E_NONE);
     }
   else
     {
-      rv = SERVER_HANDSHAKE_OK;
+      tls_notify_app_accept (ctx);
     }
 
   TLS_DBG (1, "Handshake for %u complete. TLS cipher is %x",
-	   ctx->tls_ctx_idx, mc->ssl.session->ciphersuite);
-  return rv;
+	   mc->mbedtls_ctx_index, mc->ssl.session->ciphersuite);
+  return 0;
 }
 
 static int
-mbedtls_write (tls_ctx_t * ctx, u8 * buf, u32 len)
+mbedtls_ctx_write (tls_ctx_t * ctx, session_t * app_session,
+		   transport_send_params_t * sp)
 {
   mbedtls_ctx_t *mc = (mbedtls_ctx_t *) ctx;
-  return mbedtls_ssl_write (&mc->ssl, buf, len);
+  u8 thread_index = ctx->c_thread_index;
+  mbedtls_main_t *mm = &mbedtls_main;
+  u32 enq_max, deq_max, deq_now;
+  session_t *tls_session;
+  int wrote;
+
+  ASSERT (mc->ssl.state == MBEDTLS_SSL_HANDSHAKE_OVER);
+
+  deq_max = svm_fifo_max_dequeue_cons (app_session->tx_fifo);
+  if (!deq_max)
+    return 0;
+
+  deq_max = clib_min (deq_max, sp->max_burst_size);
+  tls_session = session_get_from_handle (ctx->tls_session_handle);
+  enq_max = svm_fifo_max_enqueue_prod (tls_session->tx_fifo);
+  deq_now = clib_min (deq_max, TLS_CHUNK_SIZE);
+
+  if (PREDICT_FALSE (enq_max == 0))
+    {
+      app_session->flags |= SESSION_F_CUSTOM_TX;
+      return 0;
+    }
+
+  vec_validate (mm->tx_bufs[thread_index], deq_now);
+  svm_fifo_peek (app_session->tx_fifo, 0, deq_now, mm->tx_bufs[thread_index]);
+
+  wrote = mbedtls_ssl_write (&mc->ssl, mm->tx_bufs[thread_index], deq_now);
+  if (wrote <= 0)
+    {
+      app_session->flags |= SESSION_F_CUSTOM_TX;
+      return 0;
+    }
+
+  svm_fifo_dequeue_drop (app_session->tx_fifo, wrote);
+  vec_reset_length (mm->tx_bufs[thread_index]);
+  tls_add_vpp_q_tx_evt (tls_session);
+
+  if (deq_now < deq_max)
+    app_session->flags |= SESSION_F_CUSTOM_TX;
+
+  return 0;
 }
 
 static int
-mbedtls_read (tls_ctx_t * ctx, u8 * buf, u32 len)
+mbedtls_ctx_read (tls_ctx_t * ctx, session_t * tls_session)
 {
   mbedtls_ctx_t *mc = (mbedtls_ctx_t *) ctx;
-  return mbedtls_ssl_read (&mc->ssl, buf, len);
+  mbedtls_main_t *mm = &mbedtls_main;
+  u8 thread_index = ctx->c_thread_index;
+  u32 deq_max, enq_max, enq_now;
+  session_t *app_session;
+  int read, enq;
+
+  if (PREDICT_FALSE (mc->ssl.state != MBEDTLS_SSL_HANDSHAKE_OVER))
+    {
+      mbedtls_ctx_handshake_rx (ctx);
+      return 0;
+    }
+
+  deq_max = svm_fifo_max_dequeue_cons (tls_session->rx_fifo);
+  if (!deq_max)
+    return 0;
+
+  app_session = session_get_from_handle (ctx->app_session_handle);
+  enq_max = svm_fifo_max_enqueue_prod (app_session->rx_fifo);
+  enq_now = clib_min (enq_max, TLS_CHUNK_SIZE);
+
+  if (PREDICT_FALSE (enq_now == 0))
+    {
+      tls_add_vpp_q_builtin_rx_evt (tls_session);
+      return 0;
+    }
+
+  vec_validate (mm->rx_bufs[thread_index], enq_now);
+  read = mbedtls_ssl_read (&mc->ssl, mm->rx_bufs[thread_index], enq_now);
+  if (read <= 0)
+    {
+      tls_add_vpp_q_builtin_rx_evt (tls_session);
+      return 0;
+    }
+
+  enq = svm_fifo_enqueue (app_session->rx_fifo, read,
+			  mm->rx_bufs[thread_index]);
+  ASSERT (enq == read);
+  vec_reset_length (mm->rx_bufs[thread_index]);
+
+  if (svm_fifo_max_dequeue_cons (tls_session->rx_fifo))
+    tls_add_vpp_q_builtin_rx_evt (tls_session);
+
+  if (enq > 0)
+    tls_notify_app_enqueue (ctx, app_session);
+
+  return enq;
 }
 
 static u8
@@ -427,6 +538,33 @@ mbedtls_handshake_is_over (tls_ctx_t * ctx)
   return (mc->ssl.state == MBEDTLS_SSL_HANDSHAKE_OVER);
 }
 
+static int
+mbedtls_transport_close (tls_ctx_t * ctx)
+{
+  if (!mbedtls_handshake_is_over (ctx))
+    {
+      session_close (session_get_from_handle (ctx->tls_session_handle));
+      return 0;
+    }
+  session_transport_closing_notify (&ctx->connection);
+  return 0;
+}
+
+static int
+mbedtls_app_close (tls_ctx_t * ctx)
+{
+  tls_disconnect_transport (ctx);
+  session_transport_delete_notify (&ctx->connection);
+  return 0;
+}
+
+static int
+mbedtls_reinit_ca_chain (void)
+{
+  /* Not supported Yet */
+  return 0;
+}
+
 const static tls_engine_vft_t mbedtls_engine = {
   .ctx_alloc = mbedtls_ctx_alloc,
   .ctx_free = mbedtls_ctx_free,
@@ -434,10 +572,14 @@ const static tls_engine_vft_t mbedtls_engine = {
   .ctx_get_w_thread = mbedtls_ctx_get_w_thread,
   .ctx_init_server = mbedtls_ctx_init_server,
   .ctx_init_client = mbedtls_ctx_init_client,
-  .ctx_handshake_rx = mbedtls_handshake_rx,
-  .ctx_write = mbedtls_write,
-  .ctx_read = mbedtls_read,
+  .ctx_write = mbedtls_ctx_write,
+  .ctx_read = mbedtls_ctx_read,
   .ctx_handshake_is_over = mbedtls_handshake_is_over,
+  .ctx_start_listen = mbedtls_start_listen,
+  .ctx_stop_listen = mbedtls_stop_listen,
+  .ctx_transport_close = mbedtls_transport_close,
+  .ctx_app_close = mbedtls_app_close,
+  .ctx_reinit_cachain = mbedtls_reinit_ca_chain,
 };
 
 int
@@ -501,14 +643,10 @@ tls_mbedtls_init (vlib_main_t * vm)
 {
   vlib_thread_main_t *vtm = vlib_get_thread_main ();
   mbedtls_main_t *mm = &mbedtls_main;
-  clib_error_t *error;
   u32 num_threads;
 
   num_threads = 1 /* main thread */  + vtm->n_threads;
 
-  if ((error = vlib_call_init_function (vm, tls_init)))
-    return error;
-
   if (tls_init_ca_chain ())
     {
       clib_warning ("failed to initialize TLS CA chain");
@@ -526,16 +664,24 @@ tls_mbedtls_init (vlib_main_t * vm)
     }
 
   vec_validate (mm->ctx_pool, num_threads - 1);
-  tls_register_engine (&mbedtls_engine, TLS_ENGINE_MBEDTLS);
+  vec_validate (mm->rx_bufs, num_threads - 1);
+  vec_validate (mm->tx_bufs, num_threads - 1);
+
+  tls_register_engine (&mbedtls_engine, CRYPTO_ENGINE_MBEDTLS);
   return 0;
 }
 
-VLIB_INIT_FUNCTION (tls_mbedtls_init);
+/* *INDENT-OFF* */
+VLIB_INIT_FUNCTION (tls_mbedtls_init) =
+{
+  .runs_after = VLIB_INITS("tls_init"),
+};
+/* *INDENT-ON* */
 
 /* *INDENT-OFF* */
 VLIB_PLUGIN_REGISTER () = {
     .version = VPP_BUILD_VER,
-    .description = "mbedtls based TLS Engine",
+    .description = "Transport Layer Security (TLS) Engine, Mbedtls Based",
 };
 /* *INDENT-ON* */