vcl: fix ldp read on closing session

[vpp.git] / src / vcl / vcl_private.h

diff --git a/src/vcl/vcl_private.h b/src/vcl/vcl_private.h
index 544b288..b50bad2 100644 (file)
--- a/src/vcl/vcl_private.h
+++ b/src/vcl/vcl_private.h
@@ -57,19 +57,20 @@ typedef enum
   STATE_APP_ENABLED,
   STATE_APP_ATTACHED,
   STATE_APP_ADDING_WORKER,
+  STATE_APP_ADDING_TLS_DATA,
   STATE_APP_FAILED,
   STATE_APP_READY
 } app_state_t;
 
 typedef enum
 {
-  STATE_START = 0,
+  STATE_CLOSED = 0,
   STATE_CONNECT = 0x01,
   STATE_LISTEN = 0x02,
   STATE_ACCEPT = 0x04,
   STATE_VPP_CLOSING = 0x08,
   STATE_DISCONNECT = 0x10,
-  STATE_FAILED = 0x20,
+  STATE_DETACHED = 0x20,
   STATE_UPDATED = 0x40,
   STATE_LISTEN_NO_MQ = 0x80,
 } vcl_session_state_t;
@@ -107,7 +108,6 @@ typedef struct
 
 typedef struct vcl_session_msg
 {
-  u32 next;
   union
   {
     session_accepted_msg_t accepted_msg;
@@ -167,9 +167,13 @@ typedef struct
   /* Socket configuration state */
   u8 is_vep;
   u8 is_vep_session;
+  /* VCL session index of the listening session (if any) */
+  u32 listener_index;
+  /* Accepted sessions on this listener */
+  int n_accepted_sessions;
   u8 has_rx_evt;
   u32 attr;
-  u64 transport_opts;
+  u64 parent_handle;
   vppcom_epoll_t vep;
   int libc_epfd;
   svm_msg_q_t *our_evt_q;
@@ -206,6 +210,8 @@ typedef struct vppcom_cfg_t_
   char *event_log_path;
   u8 *vpp_api_filename;
   u8 *vpp_api_socket_name;
+  u8 *vpp_api_chroot;
+  u32 tls_engine;
 } vppcom_cfg_t;
 
 void vppcom_cfg (vppcom_cfg_t * vcl_cfg);
@@ -247,6 +253,9 @@ typedef struct vcl_worker_
   /** VPP binary api input queue */
   svm_queue_t *vl_input_queue;
 
+  /** VPP mq to be used for exchanging control messages */
+  svm_msg_q_t *ctrl_mq;
+
   /** Message queues epoll fd. Initialized only if using mqs with eventfds */
   int mqs_epfd;
 
@@ -289,6 +298,9 @@ typedef struct vcl_worker_
 
   u32 forked_child;
 
+  socket_client_main_t bapi_sock_ctx;
+  memory_client_main_t bapi_shm_ctx;
+  api_main_t bapi_api_ctx;
 } vcl_worker_t;
 
 typedef struct vppcom_main_t_
@@ -325,6 +337,9 @@ typedef struct vppcom_main_t_
   /** Mapped segments table */
   uword *segment_table;
 
+  /** Control mq obtained from attach */
+  svm_msg_q_t *ctrl_mq;
+
   fifo_segment_main_t segment_main;
 
 #ifdef VCL_ELOG
@@ -352,12 +367,14 @@ vcl_session_alloc (vcl_worker_t * wrk)
   pool_get (wrk->sessions, s);
   memset (s, 0, sizeof (*s));
   s->session_index = s - wrk->sessions;
+  s->listener_index = VCL_INVALID_SESSION_INDEX;
   return s;
 }
 
 static inline void
 vcl_session_free (vcl_worker_t * wrk, vcl_session_t * s)
 {
+  VDBG (0, "session %u [0x%llx] removed", s->session_index, s->vpp_handle);
   pool_put (wrk->sessions, s);
 }
 
@@ -447,6 +464,26 @@ vcl_session_table_del_listener (vcl_worker_t * wrk, u64 listener_handle)
   hash_unset (wrk->session_index_by_vpp_handles, listener_handle);
 }
 
+static inline int
+vcl_session_is_connectable_listener (vcl_worker_t * wrk,
+                                    vcl_session_t * session)
+{
+  /* Tell if we session_handle is a QUIC session.
+   * We can be in the following cases :
+   * Listen session <- QUIC session <- Stream session
+   * QUIC session <- Stream session
+   */
+  vcl_session_t *ls;
+  if (session->session_type != VPPCOM_PROTO_QUIC)
+    return 0;
+  if (session->listener_index == VCL_INVALID_SESSION_INDEX)
+    return !(session->session_state & STATE_LISTEN);
+  ls = vcl_session_get_w_handle (wrk, session->listener_index);
+  if (!ls)
+    return VPPCOM_EBADFD;
+  return ls->session_state & STATE_LISTEN;
+}
+
 static inline vcl_session_t *
 vcl_session_table_lookup_listener (vcl_worker_t * wrk, u64 handle)
 {
@@ -467,7 +504,8 @@ vcl_session_table_lookup_listener (vcl_worker_t * wrk, u64 handle)
       return 0;
     }
 
-  ASSERT (session->session_state & (STATE_LISTEN | STATE_LISTEN_NO_MQ));
+  ASSERT ((session->session_state & (STATE_LISTEN | STATE_LISTEN_NO_MQ)) ||
+         vcl_session_is_connectable_listener (wrk, session));
   return session;
 }
 
@@ -479,6 +517,14 @@ vcl_session_is_ct (vcl_session_t * s)
   return (s->ct_tx_fifo != 0);
 }
 
+static inline u8
+vcl_session_is_cl (vcl_session_t * s)
+{
+  if (s->session_type == VPPCOM_PROTO_UDP)
+    return 1;
+  return 0;
+}
+
 static inline u8
 vcl_session_is_open (vcl_session_t * s)
 {
@@ -497,6 +543,7 @@ vcl_session_is_closing (vcl_session_t * s)
 static inline int
 vcl_session_closing_error (vcl_session_t * s)
 {
+  /* Return 0 on closing sockets */
   return s->session_state == STATE_DISCONNECT ? VPPCOM_ECONNRESET : 0;
 }
 
@@ -521,6 +568,7 @@ vcl_worker_t *vcl_worker_alloc_and_init (void);
 void vcl_worker_cleanup (vcl_worker_t * wrk, u8 notify_vpp);
 int vcl_worker_register_with_vpp (void);
 int vcl_worker_set_bapi (void);
+svm_msg_q_t *vcl_worker_ctrl_mq (vcl_worker_t * wrk);
 
 void vcl_flush_mq_events (void);
 void vcl_cleanup_bapi (void);
@@ -572,14 +620,13 @@ void vcl_send_session_worker_update (vcl_worker_t * wrk, vcl_session_t * s,
  * VCL Binary API
  */
 int vppcom_connect_to_vpp (char *app_name);
+void vppcom_disconnect_from_vpp (void);
 void vppcom_init_error_string_table (void);
 void vppcom_send_session_enable_disable (u8 is_enable);
 void vppcom_app_send_attach (void);
 void vppcom_app_send_detach (void);
-void vppcom_send_connect_sock (vcl_session_t * session);
+void vcl_send_session_unlisten (vcl_worker_t * wrk, vcl_session_t * s);
 void vppcom_send_disconnect_session (u64 vpp_handle);
-void vppcom_send_bind_sock (vcl_session_t * session);
-void vppcom_send_unbind_sock (vcl_worker_t * wrk, u64 vpp_handle);
 void vppcom_api_hookup (void);
 void vppcom_send_application_tls_cert_add (vcl_session_t * session,
                                           char *cert, u32 cert_len);
@@ -588,6 +635,10 @@ void vppcom_send_application_tls_key_add (vcl_session_t * session, char *key,
 void vcl_send_app_worker_add_del (u8 is_add);
 void vcl_send_child_worker_del (vcl_worker_t * wrk);
 
+int vcl_segment_attach (u64 segment_handle, char *name,
+                       ssvm_segment_type_t type, int fd);
+void vcl_segment_detach (u64 segment_handle);
+
 u32 vcl_max_nsid_len (void);
 
 u8 *format_api_error (u8 * s, va_list * args);