X-Git-Url: https://gerrit.fd.io/r/gitweb?p=vpp.git;a=blobdiff_plain;f=src%2Fvnet%2Fsession%2Fsession.h;h=0a72f97a2f82d73e1d45ed4243831a9e9f2cface;hp=92fd5fafe7a92d460630676fe53db4246c68ffed;hb=07063b8ea;hpb=f6c4313b6aa7746fe97afd398ce68c2efbef0600

diff --git a/src/vnet/session/session.h b/src/vnet/session/session.h
index 92fd5fafe7a..0a72f97a2f8 100644
--- a/src/vnet/session/session.h
+++ b/src/vnet/session/session.h
@@ -15,13 +15,12 @@
 #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>
-#include <vnet/session/segment_manager.h>
 #include <svm/message_queue.h>
-
-#define SESSION_PROXY_LISTENER_INDEX ((u8)~0 - 1)
+#include <svm/ssvm.h>
 
 #define foreach_session_input_error                                    	\
 _(NO_SESSION, "No session drops")                                       \
@@ -49,22 +48,30 @@ 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_manager_worker_
+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);
 
@@ -74,17 +81,17 @@ typedef struct session_manager_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;
 
-  /** Per-proto enqueue epoch counters */
-  u64 current_enqueue_epoch[TRANSPORT_N_PROTO];
+  /** 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;
@@ -92,29 +99,39 @@ typedef struct session_manager_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;
+
+  /** Pool of ctrl events data buffers */
+  session_evt_ctrl_data_t *ctrl_evts_data;
 
-  /** Vector of active event vectors */
-  session_event_t *pending_event_vector;
+  /** Head of control events list */
+  clib_llist_index_t ctrl_head;
 
-  /** Vector of postponed disconnects */
-  session_event_t *pending_disconnects;
+  /** Head of list of elements */
+  clib_llist_index_t new_head;
 
-  /** Vector of postponed events */
-  session_event_t *postponed_event_vector;
+  /** 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;
 
-} session_manager_worker_t;
+  /** 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_manager_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;
@@ -122,10 +139,10 @@ extern session_fifo_rx_fn session_tx_fifo_dequeue_internal;
 
 u8 session_node_lookup_fifo_event (svm_fifo_t * f, session_event_t * e);
 
-typedef struct session_manager_main_
+typedef struct session_main_
 {
   /** Worker contexts */
-  session_manager_worker_t *wrk;
+  session_worker_t *wrk;
 
   /** Event queues memfd segment initialized only if so configured */
   ssvm_private_t evt_qs_segment;
@@ -141,12 +158,16 @@ typedef struct session_manager_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;
@@ -174,68 +195,129 @@ typedef struct session_manager_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_manager_main_t;
+} session_main_t;
 
-extern session_manager_main_t session_manager_main;
+extern session_main_t session_main;
 extern vlib_node_registration_t session_queue_node;
 extern vlib_node_registration_t session_queue_process_node;
+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
-stream_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_manager_main.wrk[thread_index].sessions, si);
-  if (s->thread_index != thread_index || s->session_index != si
-      /* || s->server_rx_fifo->master_session_index != si
-         || s->server_tx_fifo->master_session_index != si
-         || s->server_rx_fifo->master_thread_index != thread_index
-         || s->server_tx_fifo->master_thread_index != thread_index */ )
-    return 0;
-  return 1;
+  session_evt_elt_t *elt;
+  pool_get (wrk->event_elts, elt);
+  return elt;
+}
+
+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)
 {
-  ASSERT (stream_session_is_valid (si, thread_index));
-  return pool_elt_at_index (session_manager_main.wrk[thread_index].sessions,
-			    si);
+  ASSERT (session_is_valid (si, thread_index));
+  return pool_elt_at_index (session_main.wrk[thread_index].sessions, si);
 }
 
 always_inline session_t *
 session_get_if_valid (u64 si, u32 thread_index)
 {
-  if (thread_index >= vec_len (session_manager_main.wrk))
+  if (thread_index >= vec_len (session_main.wrk))
     return 0;
 
-  if (pool_is_free_index (session_manager_main.wrk[thread_index].sessions,
-			  si))
+  if (pool_is_free_index (session_main.wrk[thread_index].sessions, si))
     return 0;
 
-  ASSERT (stream_session_is_valid (si, thread_index));
-  return pool_elt_at_index (session_manager_main.wrk[thread_index].sessions,
-			    si);
+  ASSERT (session_is_valid (si, thread_index));
+  return pool_elt_at_index (session_main.wrk[thread_index].sessions, si);
 }
 
 always_inline session_t *
 session_get_from_handle (session_handle_t handle)
 {
-  session_manager_main_t *smm = &session_manager_main;
+  session_main_t *smm = &session_main;
   u32 session_index, thread_index;
   session_parse_handle (handle, &session_index, &thread_index);
   return pool_elt_at_index (smm->wrk[thread_index].sessions, session_index);
@@ -249,18 +331,7 @@ session_get_from_handle_if_valid (session_handle_t handle)
   return session_get_if_valid (session_index, thread_index);
 }
 
-always_inline u64
-session_segment_handle (session_t * s)
-{
-  svm_fifo_t *f;
-
-  if (s->session_state == SESSION_STATE_LISTENING)
-    return SESSION_INVALID_HANDLE;
-
-  f = s->rx_fifo;
-  return segment_manager_make_segment_handle (f->segment_manager,
-					      f->segment_index);
-}
+u64 session_segment_handle (session_t * s);
 
 /**
  * Acquires a lock that blocks a session pool from expanding.
@@ -275,7 +346,7 @@ session_segment_handle (session_t * s)
 always_inline void
 session_pool_add_peeker (u32 thread_index)
 {
-  session_manager_worker_t *wrk = &session_manager_main.wrk[thread_index];
+  session_worker_t *wrk = &session_main.wrk[thread_index];
   if (thread_index == vlib_get_thread_index ())
     return;
   clib_rwlock_reader_lock (&wrk->peekers_rw_locks);
@@ -284,7 +355,7 @@ session_pool_add_peeker (u32 thread_index)
 always_inline void
 session_pool_remove_peeker (u32 thread_index)
 {
-  session_manager_worker_t *wrk = &session_manager_main.wrk[thread_index];
+  session_worker_t *wrk = &session_main.wrk[thread_index];
   if (thread_index == vlib_get_thread_index ())
     return;
   clib_rwlock_reader_unlock (&wrk->peekers_rw_locks);
@@ -299,7 +370,7 @@ always_inline session_t *
 session_get_from_handle_safe (u64 handle)
 {
   u32 thread_index = session_thread_from_handle (handle);
-  session_manager_worker_t *wrk = &session_manager_main.wrk[thread_index];
+  session_worker_t *wrk = &session_main.wrk[thread_index];
 
   if (thread_index == vlib_get_thread_index ())
     {
@@ -317,7 +388,7 @@ session_get_from_handle_safe (u64 handle)
 always_inline u32
 session_get_index (session_t * s)
 {
-  return (s - session_manager_main.wrk[s->thread_index].sessions);
+  return (s - session_main.wrk[s->thread_index].sessions);
 }
 
 always_inline session_t *
@@ -333,7 +404,7 @@ session_clone_safe (u32 session_index, u32 thread_index)
    */
   session_pool_add_peeker (thread_index);
   new_s = session_alloc (current_thread_index);
-  old_s = session_manager_main.wrk[thread_index].sessions + session_index;
+  old_s = session_main.wrk[thread_index].sessions + session_index;
   clib_memcpy_fast (new_s, old_s, sizeof (*new_s));
   session_pool_remove_peeker (thread_index);
   new_s->thread_index = current_thread_index;
@@ -345,20 +416,29 @@ 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);
+int session_enqueue_notify (session_t * s);
 int session_dequeue_notify (session_t * s);
 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_stream_session (u8 * s, va_list * args);
-uword unformat_stream_session (unformat_input_t * input, va_list * args);
+u8 *format_session (u8 * s, va_list * args);
+uword unformat_session (unformat_input_t * input, va_list * args);
 uword unformat_transport_connection (unformat_input_t * input,
 				     va_list * args);
 
@@ -373,55 +453,70 @@ int session_enqueue_dgram_connection (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 session_dequeue_drop (transport_connection_t * tc, u32 max_bytes);
-
 int session_stream_connect_notify (transport_connection_t * tc, u8 is_fail);
 int session_dgram_connect_notify (transport_connection_t * tc,
 				  u32 old_thread_index,
 				  session_t ** new_session);
-void stream_session_init_fifos_pointers (transport_connection_t * tc,
-					 u32 rx_pointer, u32 tx_pointer);
-
 int session_stream_accept_notify (transport_connection_t * tc);
 void session_transport_closing_notify (transport_connection_t * tc);
 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 session_tx_fifo_max_dequeue (transport_connection_t * tc);
+			   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);
 
 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
@@ -431,16 +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_manager_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_manager_main.wrk[thread_index].last_vlib_time;
+  return session_main.wrk[thread_index].last_vlib_us_time;
 }
 
 always_inline void
@@ -459,7 +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);
 }
 
@@ -500,51 +596,66 @@ listen_session_free (session_t * s)
 
 transport_connection_t *listen_session_get_transport (session_t * s);
 
-int
-listen_session_get_local_session_endpoint (session_t * listener,
-					   session_endpoint_t * sep);
-
 /*
- * Session manager functions
+ * Session layer functions
  */
 
-always_inline session_manager_main_t *
-vnet_get_session_manager_main ()
+always_inline session_main_t *
+vnet_get_session_main ()
 {
-  return &session_manager_main;
+  return &session_main;
 }
 
-always_inline session_manager_worker_t *
-session_manager_get_worker (u32 thread_index)
+always_inline session_worker_t *
+session_main_get_worker (u32 thread_index)
 {
-  return &session_manager_main.wrk[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_manager_get_vpp_event_queue (u32 thread_index)
+session_main_get_vpp_event_queue (u32 thread_index)
 {
-  return session_manager_main.wrk[thread_index].vpp_event_queue;
+  return session_main.wrk[thread_index].vpp_event_queue;
 }
 
 always_inline u8
-session_manager_is_enabled ()
+session_main_is_enabled ()
 {
-  return session_manager_main.is_enabled == 1;
+  return session_main.is_enabled == 1;
 }
 
 #define session_cli_return_if_not_enabled()				\
 do {									\
-    if (!session_manager_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_manager_flush_enqueue_events (u8 proto, u32 thread_index);
-int session_manager_flush_all_enqueue_events (u8 transport_proto);
+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);
-ssvm_private_t *session_manager_get_evt_q_segment (void);
+
+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__ */
 
 /*