udp/session: refactor to support dgram mode

[vpp.git] / src / vnet / session / session.h

diff --git a/src/vnet/session/session.h b/src/vnet/session/session.h
index a6118d1..9d534ae 100644 (file)
--- a/src/vnet/session/session.h
+++ b/src/vnet/session/session.h
@@ -126,9 +126,6 @@ struct _session_manager_main
   /** Per worker-thread session pool peekers rw locks */
   clib_rwlock_t *peekers_rw_locks;
 
-  /** Pool of listen sessions. Same type as stream sessions to ease lookups */
-  stream_session_t **listen_sessions;
-
   /** Per-proto, per-worker enqueue epoch counters */
   u32 *current_enqueue_epoch[TRANSPORT_N_PROTO];
 
@@ -207,6 +204,31 @@ struct _session_manager_main
 
 };
 
+typedef struct session_dgram_pre_hdr_
+{
+  u32 data_length;
+  u32 data_offset;
+} session_dgram_pre_hdr_t;
+
+/* *INDENT-OFF* */
+typedef CLIB_PACKED (struct session_dgram_header_
+{
+  u32 data_length;
+  u32 data_offset;
+  ip46_address_t rmt_ip;
+  ip46_address_t lcl_ip;
+  u16 rmt_port;
+  u16 lcl_port;
+  u8 is_ip4;
+}) session_dgram_hdr_t;
+/* *INDENT-ON* */
+
+#define SESSION_CONN_ID_LEN 37
+#define SESSION_CONN_HDR_LEN 45
+
+STATIC_ASSERT (sizeof (session_dgram_hdr_t) == (SESSION_CONN_ID_LEN + 8),
+              "session conn id wrong length");
+
 extern session_manager_main_t session_manager_main;
 extern vlib_node_registration_t session_queue_node;
 
@@ -345,6 +367,14 @@ session_has_transport (stream_session_t * s)
   return (session_get_transport_proto (s) != TRANSPORT_PROTO_NONE);
 }
 
+always_inline transport_service_type_t
+session_transport_service_type (stream_session_t * s)
+{
+  transport_proto_t tp;
+  tp = session_get_transport_proto (s);
+  return transport_protocol_service_type (tp);
+}
+
 /**
  * Acquires a lock that blocks a session pool from expanding.
  *
@@ -396,21 +426,6 @@ session_get_from_handle_safe (u64 handle)
     }
 }
 
-always_inline stream_session_t *
-stream_session_listener_get (u8 sst, u64 si)
-{
-  return pool_elt_at_index (session_manager_main.listen_sessions[sst], si);
-}
-
-always_inline u32
-stream_session_get_index (stream_session_t * s)
-{
-  if (s->session_state == SESSION_STATE_LISTENING)
-    return s - session_manager_main.listen_sessions[s->session_type];
-
-  return s - session_manager_main.sessions[s->thread_index];
-}
-
 always_inline u32
 stream_session_max_rx_enqueue (transport_connection_t * tc)
 {
@@ -460,8 +475,10 @@ int
 session_enqueue_stream_connection (transport_connection_t * tc,
                                   vlib_buffer_t * b, u32 offset,
                                   u8 queue_event, u8 is_in_order);
-int session_enqueue_dgram_connection (stream_session_t * s, vlib_buffer_t * b,
-                                     u8 proto, u8 queue_event);
+int session_enqueue_dgram_connection (stream_session_t * s,
+                                     session_dgram_hdr_t * hdr,
+                                     vlib_buffer_t * b, u8 proto,
+                                     u8 queue_event);
 int stream_session_peek_bytes (transport_connection_t * tc, u8 * buffer,
                               u32 offset, u32 max_bytes);
 u32 stream_session_dequeue_drop (transport_connection_t * tc, u32 max_bytes);
@@ -508,64 +525,48 @@ session_manager_get_vpp_event_queue (u32 thread_index)
 }
 
 int session_manager_flush_enqueue_events (u8 proto, u32 thread_index);
+int session_manager_flush_all_enqueue_events (u8 transport_proto);
 
 always_inline u64
 listen_session_get_handle (stream_session_t * s)
 {
   ASSERT (s->session_state == SESSION_STATE_LISTENING);
-  return ((u64) s->session_type << 32) | s->session_index;
+  return session_handle (s);
 }
 
 always_inline stream_session_t *
 listen_session_get_from_handle (session_handle_t handle)
 {
-  session_manager_main_t *smm = &session_manager_main;
-  stream_session_t *s;
-  u32 type, index;
-  type = handle >> 32;
-  index = handle & 0xFFFFFFFF;
-
-  if (pool_is_free_index (smm->listen_sessions[type], index))
-    return 0;
-
-  s = pool_elt_at_index (smm->listen_sessions[type], index);
-  ASSERT (s->session_state == SESSION_STATE_LISTENING);
-  return s;
+  return session_get_from_handle (handle);
 }
 
 always_inline void
-listen_session_parse_handle (session_handle_t handle, u32 * type, u32 * index)
+listen_session_parse_handle (session_handle_t handle, u32 * index,
+                            u32 * thread_index)
 {
-  *type = handle >> 32;
-  *index = handle & 0xFFFFFFFF;
+  session_parse_handle (handle, index, thread_index);
 }
 
 always_inline stream_session_t *
-listen_session_new (session_type_t type)
+listen_session_new (u8 thread_index, session_type_t type)
 {
   stream_session_t *s;
-  pool_get_aligned (session_manager_main.listen_sessions[type], s,
-                   CLIB_CACHE_LINE_BYTES);
-  memset (s, 0, sizeof (*s));
-
+  s = session_alloc (thread_index);
   s->session_type = type;
   s->session_state = SESSION_STATE_LISTENING;
-  s->session_index = s - session_manager_main.listen_sessions[type];
-
   return s;
 }
 
 always_inline stream_session_t *
-listen_session_get (session_type_t type, u32 index)
+listen_session_get (u32 index)
 {
-  return pool_elt_at_index (session_manager_main.listen_sessions[type],
-                           index);
+  return session_get (index, 0);
 }
 
 always_inline void
 listen_session_del (stream_session_t * s)
 {
-  pool_put (session_manager_main.listen_sessions[s->session_type], s);
+  session_free (s);
 }
 
 transport_connection_t *listen_session_get_transport (stream_session_t * s);
@@ -574,14 +575,6 @@ int
 listen_session_get_local_session_endpoint (stream_session_t * listener,
                                           session_endpoint_t * sep);
 
-always_inline stream_session_t *
-session_manager_get_listener (u8 session_type, u32 index)
-{
-  return
-    pool_elt_at_index (session_manager_main.listen_sessions[session_type],
-                      index);
-}
-
 always_inline u8
 session_manager_is_enabled ()
 {