X-Git-Url: https://gerrit.fd.io/r/gitweb?p=vpp.git;a=blobdiff_plain;f=src%2Fvnet%2Fsession%2Fsession.h;h=0a72f97a2f82d73e1d45ed4243831a9e9f2cface;hp=26506cae3bc66ddc516e1dee9f6d19b62cc8e728;hb=07063b8ea;hpb=d5c604d6872bdb5576a900d51b96f2e6736b63a5

diff --git a/src/vnet/session/session.h b/src/vnet/session/session.h
index 26506cae3bc..0a72f97a2f8 100644
--- a/src/vnet/session/session.h
+++ b/src/vnet/session/session.h
@@ -15,6 +15,7 @@
 #ifndef __included_session_h__
 #define __included_session_h__
 
+#include <vppinfra/llist.h>
 #include <vnet/session/session_types.h>
 #include <vnet/session/session_lookup.h>
 #include <vnet/session/session_debug.h>
@@ -47,21 +48,29 @@ typedef struct session_tx_context_
   session_t *s;
   transport_proto_vft_t *transport_vft;
   transport_connection_t *tc;
-  vlib_buffer_t *b;
+  transport_send_params_t sp;
   u32 max_dequeue;
-  u32 snd_space;
   u32 left_to_snd;
-  u32 tx_offset;
   u32 max_len_to_snd;
   u16 deq_per_first_buf;
   u16 deq_per_buf;
-  u16 snd_mss;
   u16 n_segs_per_evt;
   u8 n_bufs_per_seg;
     CLIB_CACHE_LINE_ALIGN_MARK (cacheline1);
   session_dgram_hdr_t hdr;
 } session_tx_context_t;
 
+typedef struct session_evt_elt
+{
+  clib_llist_anchor_t evt_list;
+  session_event_t evt;
+} session_evt_elt_t;
+
+typedef struct session_ctrl_evt_data_
+{
+  u8 data[SESSION_CTRL_MSG_MAX_SIZE];
+} session_evt_ctrl_data_t;
+
 typedef struct session_worker_
 {
   CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
@@ -72,14 +81,17 @@ typedef struct session_worker_
   /** vpp event message queue for worker */
   svm_msg_q_t *vpp_event_queue;
 
-  /** Our approximation of a "complete" dispatch loop period */
-  f64 dispatch_period;
-
   /** vlib_time_now last time around the track */
-  f64 last_vlib_time;
+  clib_time_type_t last_vlib_time;
+
+  /** vlib_time_now rounded to us precision and as u64 */
+  clib_us_time_t last_vlib_us_time;
+
+  /** Convenience pointer to this worker's vlib_main */
+  vlib_main_t *vm;
 
   /** Per-proto vector of sessions to enqueue */
-  u32 *session_to_enqueue[TRANSPORT_N_PROTO];
+  u32 **session_to_enqueue;
 
   /** Context for session tx */
   session_tx_context_t ctx;
@@ -87,29 +99,39 @@ typedef struct session_worker_
   /** Vector of tx buffer free lists */
   u32 *tx_buffers;
 
-  /** Vector of partially read events */
-  session_event_t *free_event_vector;
+  /** Pool of session event list elements */
+  session_evt_elt_t *event_elts;
 
-  /** Vector of active event vectors */
-  session_event_t *pending_event_vector;
+  /** Pool of ctrl events data buffers */
+  session_evt_ctrl_data_t *ctrl_evts_data;
 
-  /** Vector of postponed disconnects */
-  session_event_t *pending_disconnects;
+  /** Head of control events list */
+  clib_llist_index_t ctrl_head;
 
-  /** Vector of postponed events */
-  session_event_t *postponed_event_vector;
+  /** Head of list of elements */
+  clib_llist_index_t new_head;
+
+  /** Head of list of pending events */
+  clib_llist_index_t old_head;
 
   /** Peekers rw lock */
   clib_rwlock_t peekers_rw_locks;
 
-  u32 last_tx_packets;
+  /** Vector of buffers to be sent */
+  u32 *pending_tx_buffers;
+
+  /** Vector of nexts for the pending tx buffers */
+  u16 *pending_tx_nexts;
 
+#if SESSION_DEBUG
+  /** last event poll time by thread */
+  clib_time_type_t last_event_poll;
+#endif
 } session_worker_t;
 
-typedef int (session_fifo_rx_fn) (vlib_main_t * vm,
+typedef int (session_fifo_rx_fn) (session_worker_t * wrk,
 				  vlib_node_runtime_t * node,
-				  session_worker_t * wrk,
-				  session_event_t * e, int *n_tx_pkts);
+				  session_evt_elt_t * e, int *n_tx_packets);
 
 extern session_fifo_rx_fn session_tx_fifo_peek_and_snd;
 extern session_fifo_rx_fn session_tx_fifo_dequeue_and_snd;
@@ -136,12 +158,16 @@ typedef struct session_main_
    * Trade memory for speed, for now */
   u32 *session_type_to_next;
 
+  transport_proto_t last_transport_proto_type;
+
   /*
    * Config parameters
    */
 
   /** Session manager is enabled */
   u8 is_enabled;
+  /** Enable session manager at startup */
+  u8 session_enable_asap;
 
   /** vpp fifo event queue configured length */
   u32 configured_event_queue_length;
@@ -169,14 +195,6 @@ typedef struct session_main_
   /** Preallocate session config parameter */
   u32 preallocated_sessions;
 
-#if SESSION_DEBUG
-  /**
-   * last event poll time by thread
-   * Debug only. Will cause false cache-line sharing as-is
-   */
-  f64 *last_event_poll_by_thread;
-#endif
-
 } session_main_t;
 
 extern session_main_t session_main;
@@ -187,22 +205,94 @@ extern vlib_node_registration_t session_queue_pre_input_node;
 #define SESSION_Q_PROCESS_FLUSH_FRAMES	1
 #define SESSION_Q_PROCESS_STOP		2
 
-always_inline u8
-session_is_valid (u32 si, u8 thread_index)
+#define TRANSPORT_PROTO_INVALID (session_main.last_transport_proto_type + 1)
+#define TRANSPORT_N_PROTOS (session_main.last_transport_proto_type + 1)
+
+static inline session_evt_elt_t *
+session_evt_elt_alloc (session_worker_t * wrk)
 {
-  session_t *s;
-  s = pool_elt_at_index (session_main.wrk[thread_index].sessions, si);
-  if (s->session_state == SESSION_STATE_CLOSED)
-    return 1;
+  session_evt_elt_t *elt;
+  pool_get (wrk->event_elts, elt);
+  return elt;
+}
 
-  if (s->thread_index != thread_index || s->session_index != si)
-    return 0;
-  return 1;
+static inline void
+session_evt_elt_free (session_worker_t * wrk, session_evt_elt_t * elt)
+{
+  pool_put (wrk->event_elts, elt);
+}
+
+static inline void
+session_evt_add_old (session_worker_t * wrk, session_evt_elt_t * elt)
+{
+  clib_llist_add_tail (wrk->event_elts, evt_list, elt,
+		       pool_elt_at_index (wrk->event_elts, wrk->old_head));
+}
+
+static inline void
+session_evt_add_head_old (session_worker_t * wrk, session_evt_elt_t * elt)
+{
+  clib_llist_add (wrk->event_elts, evt_list, elt,
+		  pool_elt_at_index (wrk->event_elts, wrk->old_head));
+}
+
+
+static inline u32
+session_evt_ctrl_data_alloc (session_worker_t * wrk)
+{
+  session_evt_ctrl_data_t *data;
+  pool_get (wrk->ctrl_evts_data, data);
+  return (data - wrk->ctrl_evts_data);
+}
+
+static inline session_evt_elt_t *
+session_evt_alloc_ctrl (session_worker_t * wrk)
+{
+  session_evt_elt_t *elt;
+  elt = session_evt_elt_alloc (wrk);
+  clib_llist_add_tail (wrk->event_elts, evt_list, elt,
+		       pool_elt_at_index (wrk->event_elts, wrk->ctrl_head));
+  return elt;
+}
+
+static inline void *
+session_evt_ctrl_data (session_worker_t * wrk, session_evt_elt_t * elt)
+{
+  return (void *) (pool_elt_at_index (wrk->ctrl_evts_data,
+				      elt->evt.ctrl_data_index));
+}
+
+static inline void
+session_evt_ctrl_data_free (session_worker_t * wrk, session_evt_elt_t * elt)
+{
+  ASSERT (elt->evt.event_type > SESSION_IO_EVT_BUILTIN_TX);
+  pool_put_index (wrk->ctrl_evts_data, elt->evt.ctrl_data_index);
+}
+
+static inline session_evt_elt_t *
+session_evt_alloc_new (session_worker_t * wrk)
+{
+  session_evt_elt_t *elt;
+  elt = session_evt_elt_alloc (wrk);
+  clib_llist_add_tail (wrk->event_elts, evt_list, elt,
+		       pool_elt_at_index (wrk->event_elts, wrk->new_head));
+  return elt;
+}
+
+static inline session_evt_elt_t *
+session_evt_alloc_old (session_worker_t * wrk)
+{
+  session_evt_elt_t *elt;
+  elt = session_evt_elt_alloc (wrk);
+  clib_llist_add_tail (wrk->event_elts, evt_list, elt,
+		       pool_elt_at_index (wrk->event_elts, wrk->old_head));
+  return elt;
 }
 
 session_t *session_alloc (u32 thread_index);
 void session_free (session_t * s);
 void session_free_w_fifos (session_t * s);
+u8 session_is_valid (u32 si, u8 thread_index);
 
 always_inline session_t *
 session_get (u32 si, u32 thread_index)
@@ -326,7 +416,9 @@ int session_open (u32 app_index, session_endpoint_t * tep, u32 opaque);
 int session_listen (session_t * s, session_endpoint_cfg_t * sep);
 int session_stop_listen (session_t * s);
 void session_close (session_t * s);
+void session_reset (session_t * s);
 void session_transport_close (session_t * s);
+void session_transport_reset (session_t * s);
 void session_transport_cleanup (session_t * s);
 int session_send_io_evt_to_thread (svm_fifo_t * f,
 				   session_evt_type_t evt_type);
@@ -336,8 +428,14 @@ int session_send_io_evt_to_thread_custom (void *data, u32 thread_index,
 					  session_evt_type_t evt_type);
 void session_send_rpc_evt_to_thread (u32 thread_index, void *fp,
 				     void *rpc_args);
+void session_send_rpc_evt_to_thread_force (u32 thread_index, void *fp,
+					   void *rpc_args);
+void session_add_self_custom_tx_evt (transport_connection_t * tc,
+				     u8 has_prio);
+void sesssion_reschedule_tx (transport_connection_t * tc);
 transport_connection_t *session_get_transport (session_t * s);
-
+void session_get_endpoint (session_t * s, transport_endpoint_t * tep,
+			   u8 is_lcl);
 
 u8 *format_session (u8 * s, va_list * args);
 uword unformat_session (unformat_input_t * input, va_list * args);
@@ -365,10 +463,23 @@ void session_transport_delete_notify (transport_connection_t * tc);
 void session_transport_closed_notify (transport_connection_t * tc);
 void session_transport_reset_notify (transport_connection_t * tc);
 int session_stream_accept (transport_connection_t * tc, u32 listener_index,
-			   u8 notify);
+			   u32 thread_index, u8 notify);
+/**
+ * Initialize session layer for given transport proto and ip version
+ *
+ * Allocates per session type (transport proto + ip version) data structures
+ * and adds arc from session queue node to session type output node.
+ *
+ * @param transport_proto 	transport proto to be registered
+ * @param vft			virtual function table for transport
+ * @param is_ip4		flag that indicates if transports uses ipv4
+ * 				as underlying network layer
+ * @param output_node		output node for transport
+ */
 void session_register_transport (transport_proto_t transport_proto,
 				 const transport_proto_vft_t * vft, u8 is_ip4,
 				 u32 output_node);
+transport_proto_t session_add_transport_proto (void);
 int session_tx_fifo_peek_bytes (transport_connection_t * tc, u8 * buffer,
 				u32 offset, u32 max_bytes);
 u32 session_tx_fifo_dequeue_drop (transport_connection_t * tc, u32 max_bytes);
@@ -377,28 +488,35 @@ always_inline u32
 transport_max_rx_enqueue (transport_connection_t * tc)
 {
   session_t *s = session_get (tc->s_index, tc->thread_index);
-  return svm_fifo_max_enqueue (s->rx_fifo);
+  return svm_fifo_max_enqueue_prod (s->rx_fifo);
 }
 
 always_inline u32
 transport_max_tx_dequeue (transport_connection_t * tc)
 {
   session_t *s = session_get (tc->s_index, tc->thread_index);
-  return svm_fifo_max_dequeue (s->tx_fifo);
+  return svm_fifo_max_dequeue_cons (s->tx_fifo);
+}
+
+always_inline u32
+transport_max_rx_dequeue (transport_connection_t * tc)
+{
+  session_t *s = session_get (tc->s_index, tc->thread_index);
+  return svm_fifo_max_dequeue (s->rx_fifo);
 }
 
 always_inline u32
 transport_rx_fifo_size (transport_connection_t * tc)
 {
   session_t *s = session_get (tc->s_index, tc->thread_index);
-  return s->rx_fifo->nitems;
+  return svm_fifo_size (s->rx_fifo);
 }
 
 always_inline u32
 transport_tx_fifo_size (transport_connection_t * tc)
 {
   session_t *s = session_get (tc->s_index, tc->thread_index);
-  return s->tx_fifo->nitems;
+  return svm_fifo_size (s->tx_fifo);
 }
 
 always_inline u8
@@ -408,16 +526,16 @@ transport_rx_fifo_has_ooo_data (transport_connection_t * tc)
   return svm_fifo_has_ooo_data (s->rx_fifo);
 }
 
-always_inline f64
-transport_dispatch_period (u32 thread_index)
+always_inline clib_time_type_t
+transport_time_now (u32 thread_index)
 {
-  return session_main.wrk[thread_index].dispatch_period;
+  return session_main.wrk[thread_index].last_vlib_time;
 }
 
-always_inline f64
-transport_time_now (u32 thread_index)
+always_inline clib_us_time_t
+transport_us_time_now (u32 thread_index)
 {
-  return session_main.wrk[thread_index].last_vlib_time;
+  return session_main.wrk[thread_index].last_vlib_us_time;
 }
 
 always_inline void
@@ -436,7 +554,8 @@ transport_add_tx_event (transport_connection_t * tc)
 always_inline u64
 listen_session_get_handle (session_t * s)
 {
-  ASSERT (s->session_state == SESSION_STATE_LISTENING);
+  ASSERT (s->session_state == SESSION_STATE_LISTENING ||
+	  session_get_transport_proto (s) == TRANSPORT_PROTO_QUIC);
   return session_handle (s);
 }
 
@@ -493,6 +612,14 @@ session_main_get_worker (u32 thread_index)
   return &session_main.wrk[thread_index];
 }
 
+static inline session_worker_t *
+session_main_get_worker_if_valid (u32 thread_index)
+{
+  if (thread_index > vec_len (session_main.wrk))
+    return 0;
+  return &session_main.wrk[thread_index];
+}
+
 always_inline svm_msg_q_t *
 session_main_get_vpp_event_queue (u32 thread_index)
 {
@@ -507,17 +634,28 @@ session_main_is_enabled ()
 
 #define session_cli_return_if_not_enabled()				\
 do {									\
-    if (!session_main.is_enabled)				\
-      return clib_error_return(0, "session layer is not enabled");	\
+    if (!session_main.is_enabled)					\
+      return clib_error_return (0, "session layer is not enabled");	\
 } while (0)
 
 int session_main_flush_enqueue_events (u8 proto, u32 thread_index);
 int session_main_flush_all_enqueue_events (u8 transport_proto);
 void session_flush_frames_main_thread (vlib_main_t * vm);
+
+always_inline void
+session_add_pending_tx_buffer (session_type_t st, u32 thread_index, u32 bi)
+{
+  session_worker_t *wrk = session_main_get_worker (thread_index);
+  vec_add1 (wrk->pending_tx_buffers, bi);
+  vec_add1 (wrk->pending_tx_nexts, session_main.session_type_to_next[st]);
+}
+
 ssvm_private_t *session_main_get_evt_q_segment (void);
 void session_node_enable_disable (u8 is_en);
 clib_error_t *vnet_session_enable_disable (vlib_main_t * vm, u8 is_en);
 
+session_t *session_alloc_for_connection (transport_connection_t * tc);
+
 #endif /* __included_session_h__ */
 
 /*