tls: fix dtls with no workers

Type: fix

Signed-off-by: Florin Coras <fcoras@cisco.com>
Change-Id: Iecc33fda7f28c037289775ffe0525a50f89a2b8c

4 files changed, 22 insertions, 10 deletions

diff --git a/src/vnet/session/session.h b/src/vnet/session/session.h
index f874ac2a263..b583c3ef0dd 100644
--- a/src/vnet/session/session.h
+++ b/src/vnet/session/session.h
@@ -189,6 +189,9 @@ typedef struct session_main_
    * Trade memory for speed, for now */
   u32 *session_type_to_next;
 
+  /** Thread for cl and ho that rely on cl allocs */
+  u32 transport_cl_thread;
+
   transport_proto_t last_transport_proto_type;
 
   /*
@@ -619,6 +622,12 @@ transport_add_tx_event (transport_connection_t * tc)
   session_send_io_evt_to_thread (s->tx_fifo, SESSION_IO_EVT_TX);
 }
 
+always_inline u32
+transport_cl_thread (void)
+{
+  return session_main.transport_cl_thread;
+}
+
 /*
  * Listen sessions
  */
diff --git a/src/vnet/session/transport.c b/src/vnet/session/transport.c
index 2c88a4c4931..5975197609d 100644
--- a/src/vnet/session/transport.c
+++ b/src/vnet/session/transport.c
@@ -853,7 +853,11 @@ transport_init (void)
 			 smm->local_endpoints_table_memory);
   num_threads = 1 /* main thread */  + vtm->n_threads;
   if (num_threads > 1)
-    clib_spinlock_init (&local_endpoints_lock);
+    {
+      clib_spinlock_init (&local_endpoints_lock);
+      /* Main not polled if there are workers */
+      smm->transport_cl_thread = 1;
+    }
 }
 
 /*
diff --git a/src/vnet/tls/tls.c b/src/vnet/tls/tls.c
index acaeb02f73c..6a61df122c8 100644
--- a/src/vnet/tls/tls.c
+++ b/src/vnet/tls/tls.c
@@ -589,7 +589,7 @@ dtls_session_connected_cb (u32 app_wrk_index, u32 ctx_handle, session_t *us,
 {
   tls_ctx_t *ctx;
 
-  ctx = tls_ctx_get_w_thread (ctx_handle, 1 /* udp allocs on thread 1 */);
+  ctx = tls_ctx_get_w_thread (ctx_handle, transport_cl_thread ());
 
   ctx->tls_session_handle = session_handle (us);
   ctx->c_flags |= TRANSPORT_CONNECTION_F_NO_LOOKUP;
@@ -1190,8 +1190,8 @@ dtls_connect (transport_endpoint_cfg_t *tep)
       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_handle = tls_ctx_alloc_w_thread (engine_type, transport_cl_thread ());
+  ctx = tls_ctx_get_w_thread (ctx_handle, transport_cl_thread ());
   ctx->parent_app_wrk_index = sep->app_wrk_index;
   ctx->parent_app_api_context = sep->opaque;
   ctx->tcp_is_ip4 = sep->is_ip4;
@@ -1226,7 +1226,7 @@ static transport_connection_t *
 dtls_half_open_get (u32 ho_index)
 {
   tls_ctx_t *ho_ctx;
-  ho_ctx = tls_ctx_get_w_thread (ho_index, 1 /* udp connects */);
+  ho_ctx = tls_ctx_get_w_thread (ho_index, transport_cl_thread ());
   return &ho_ctx->connection;
 }
 
@@ -1240,7 +1240,7 @@ static void
 dtls_cleanup_ho (u32 ho_index)
 {
   tls_ctx_t *ctx;
-  ctx = tls_ctx_get_w_thread (ho_index, 1 /* udp connects */);
+  ctx = tls_ctx_get_w_thread (ho_index, transport_cl_thread ());
   tls_ctx_free (ctx);
 }
 
@@ -1252,7 +1252,7 @@ format_dtls_half_open (u8 *s, va_list *args)
   tls_ctx_t *ho_ctx;
   session_t *us;
 
-  ho_ctx = tls_ctx_get_w_thread (ho_index, 1 /* udp connects */);
+  ho_ctx = tls_ctx_get_w_thread (ho_index, transport_cl_thread ());
 
   us = session_get_from_handle (ho_ctx->tls_session_handle);
   s = format (s, "[%d:%d][%s] half-open app_wrk %u engine %u us %d:%d",
diff --git a/src/vnet/udp/udp.c b/src/vnet/udp/udp.c
index 1878d2ed083..40e0053bb96 100644
--- a/src/vnet/udp/udp.c
+++ b/src/vnet/udp/udp.c
@@ -375,8 +375,7 @@ conn_alloc:
   udp_connection_register_port (vm, lcl_port, rmt->is_ip4);
 
   /* We don't poll main thread if we have workers */
-  if (vlib_num_workers ())
-    thread_index = 1;
+  thread_index = transport_cl_thread ();
 
   uc = udp_connection_alloc (thread_index);
   ip_copy (&uc->c_rmt_ip, &rmt->ip, rmt->is_ip4);
@@ -408,7 +407,7 @@ udp_session_get_half_open (u32 conn_index)
   u32 thread_index;
 
   /* We don't poll main thread if we have workers */
-  thread_index = vlib_num_workers ()? 1 : 0;
+  thread_index = transport_cl_thread ();
   uc = udp_connection_get (conn_index, thread_index);
   if (!uc)
     return 0;