/*
- * Copyright (c) 2017 Cisco and/or its affiliates.
+ * Copyright (c) 2017-2019 Cisco and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
#ifndef __included_session_h__
#define __included_session_h__
-#include <vnet/session/transport.h>
-#include <vlibmemory/unix_shared_memory_queue.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>
-
-#define HALF_OPEN_LOOKUP_INVALID_VALUE ((u64)~0)
-#define INVALID_INDEX ((u32)~0)
-
-/* TODO decide how much since we have pre-data as well */
-#define MAX_HDRS_LEN 100 /* Max number of bytes for headers */
-
-typedef enum
-{
- FIFO_EVENT_APP_RX,
- FIFO_EVENT_APP_TX,
- FIFO_EVENT_TIMEOUT,
- FIFO_EVENT_DISCONNECT,
- FIFO_EVENT_BUILTIN_RX,
- FIFO_EVENT_RPC,
-} fifo_event_type_t;
+#include <svm/message_queue.h>
+#include <svm/ssvm.h>
#define foreach_session_input_error \
_(NO_SESSION, "No session drops") \
_(EVENT_FIFO_FULL, "Events not sent for lack of event fifo space") \
_(API_QUEUE_FULL, "Sessions not created for lack of API queue space") \
_(NEW_SEG_NO_SPACE, "Created segment, couldn't allocate a fifo pair") \
-_(NO_SPACE, "Couldn't allocate a fifo pair")
+_(NO_SPACE, "Couldn't allocate a fifo pair") \
+_(SEG_CREATE, "Couldn't create a new segment")
typedef enum
{
SESSION_N_ERROR,
} session_error_t;
-/* Event queue input node static next indices */
-typedef enum
+typedef struct session_tx_context_
{
- SESSION_QUEUE_NEXT_DROP,
- SESSION_QUEUE_NEXT_TCP_IP4_OUTPUT,
- SESSION_QUEUE_NEXT_IP4_LOOKUP,
- SESSION_QUEUE_NEXT_TCP_IP6_OUTPUT,
- SESSION_QUEUE_NEXT_IP6_LOOKUP,
- SESSION_QUEUE_N_NEXT,
-} session_queue_next_t;
-
-#define foreach_session_type \
- _(IP4_TCP, ip4_tcp) \
- _(IP4_UDP, ip4_udp) \
- _(IP6_TCP, ip6_tcp) \
- _(IP6_UDP, ip6_udp)
-
-typedef enum
+ CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
+ session_t *s;
+ transport_proto_vft_t *transport_vft;
+ transport_connection_t *tc;
+ transport_send_params_t sp;
+ u32 max_dequeue;
+ u32 left_to_snd;
+ u32 max_len_to_snd;
+ u16 deq_per_first_buf;
+ u16 deq_per_buf;
+ 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
{
-#define _(A, a) SESSION_TYPE_##A,
- foreach_session_type
-#undef _
- SESSION_N_TYPES,
-} session_type_t;
+ clib_llist_anchor_t evt_list;
+ session_event_t evt;
+} session_evt_elt_t;
-/*
- * Application session state
- */
-typedef enum
+typedef struct session_ctrl_evt_data_
{
- SESSION_STATE_LISTENING,
- SESSION_STATE_CONNECTING,
- SESSION_STATE_READY,
- SESSION_STATE_CLOSED,
- SESSION_STATE_N_STATES,
-} stream_session_state_t;
+ u8 data[SESSION_CTRL_MSG_MAX_SIZE];
+} session_evt_ctrl_data_t;
-typedef struct
+typedef struct session_worker_
{
- void *fp;
- void *arg;
-} rpc_args_t;
+ CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
-/* *INDENT-OFF* */
-typedef CLIB_PACKED (struct {
- union
- {
- svm_fifo_t * fifo;
- u64 session_handle;
- rpc_args_t rpc_args;
- };
- u8 event_type;
- u16 event_id;
-}) session_fifo_event_t;
-/* *INDENT-ON* */
+ /** Worker session pool */
+ session_t *sessions;
-typedef struct _stream_session_t
-{
- /** fifo pointers. Once allocated, these do not move */
- svm_fifo_t *server_rx_fifo;
- svm_fifo_t *server_tx_fifo;
+ /** vpp event message queue for worker */
+ svm_msg_q_t *vpp_event_queue;
+
+ /** vlib_time_now last time around the track */
+ clib_time_type_t last_vlib_time;
- /** Type */
- u8 session_type;
+ /** vlib_time_now rounded to us precision and as u64 */
+ clib_us_time_t last_vlib_us_time;
- /** State */
- u8 session_state;
+ /** Convenience pointer to this worker's vlib_main */
+ vlib_main_t *vm;
- u8 thread_index;
+ /** Per-proto vector of sessions to enqueue */
+ u32 **session_to_enqueue;
- /** used during unbind processing */
- u8 is_deleted;
+ /** Context for session tx */
+ session_tx_context_t ctx;
- /** To avoid n**2 "one event per frame" check */
- u8 enqueue_epoch;
+ /** Vector of tx buffer free lists */
+ u32 *tx_buffers;
- /** Pad to a multiple of 8 octets */
- u8 align_pad[2];
+ /** Pool of session event list elements */
+ session_evt_elt_t *event_elts;
- /** svm segment index where fifos were allocated */
- u32 svm_segment_index;
+ /** Pool of ctrl events data buffers */
+ session_evt_ctrl_data_t *ctrl_evts_data;
- /** Session index in per_thread pool */
- u32 session_index;
+ /** Head of control events list */
+ clib_llist_index_t ctrl_head;
- /** Transport specific */
- u32 connection_index;
+ /** Head of list of elements */
+ clib_llist_index_t new_head;
- /** Application specific */
- u32 pid;
+ /** Head of list of pending events */
+ clib_llist_index_t old_head;
- /** stream server pool index */
- u32 app_index;
+ /** Peekers rw lock */
+ clib_rwlock_t peekers_rw_locks;
- /** Parent listener session if the result of an accept */
- u32 listener_index;
+ /** Vector of buffers to be sent */
+ u32 *pending_tx_buffers;
- /** Opaque, pad to a 64-octet boundary */
- u64 opaque[2];
-} stream_session_t;
+ /** Vector of nexts for the pending tx buffers */
+ u16 *pending_tx_nexts;
-/* Forward definition */
-typedef struct _session_manager_main session_manager_main_t;
+#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, vlib_node_runtime_t * node,
- session_manager_main_t * smm,
- session_fifo_event_t * e0, stream_session_t * s0,
- u32 thread_index, int *n_tx_pkts);
+typedef int (session_fifo_rx_fn) (session_worker_t * wrk,
+ vlib_node_runtime_t * node,
+ 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;
+extern session_fifo_rx_fn session_tx_fifo_dequeue_internal;
+
+u8 session_node_lookup_fifo_event (svm_fifo_t * f, session_event_t * e);
-struct _session_manager_main
+typedef struct session_main_
{
- /** Lookup tables for established sessions and listeners */
- clib_bihash_16_8_t v4_session_hash;
- clib_bihash_48_8_t v6_session_hash;
+ /** Worker contexts */
+ session_worker_t *wrk;
- /** Lookup tables for half-open sessions */
- clib_bihash_16_8_t v4_half_open_hash;
- clib_bihash_48_8_t v6_half_open_hash;
+ /** Event queues memfd segment initialized only if so configured */
+ ssvm_private_t evt_qs_segment;
- /** Per worker thread session pools */
- stream_session_t **sessions;
+ /** Unique segment name counter */
+ u32 unique_segment_name_counter;
- /** Pool of listen sessions. Same type as stream sessions to ease lookups */
- stream_session_t *listen_sessions[SESSION_N_TYPES];
+ /** Per transport rx function that can either dequeue or peek */
+ session_fifo_rx_fn **session_tx_fns;
- /** Sparse vector to map dst port to stream server */
- u16 *stream_server_by_dst_port[SESSION_N_TYPES];
+ /** Per session type output nodes. Could optimize to group nodes by
+ * fib but lookup would then require session type parsing in session node.
+ * Trade memory for speed, for now */
+ u32 *session_type_to_next;
- /** per-worker enqueue epoch counters */
- u8 *current_enqueue_epoch;
+ transport_proto_t last_transport_proto_type;
- /** Per-worker thread vector of sessions to enqueue */
- u32 **session_indices_to_enqueue_by_thread;
+ /*
+ * Config parameters
+ */
- /** per-worker tx buffer free lists */
- u32 **tx_buffers;
+ /** 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;
+
+ /** Session ssvm segment configs*/
+ uword session_baseva;
+ uword session_va_space_size;
+ uword evt_qs_segment_size;
+ u8 evt_qs_use_memfd_seg;
+
+ /** Session table size parameters */
+ u32 configured_v4_session_table_buckets;
+ u32 configured_v4_session_table_memory;
+ u32 configured_v4_halfopen_table_buckets;
+ u32 configured_v4_halfopen_table_memory;
+ u32 configured_v6_session_table_buckets;
+ u32 configured_v6_session_table_memory;
+ u32 configured_v6_halfopen_table_buckets;
+ u32 configured_v6_halfopen_table_memory;
+
+ /** Transport table (preallocation) size parameters */
+ u32 local_endpoints_table_memory;
+ u32 local_endpoints_table_buckets;
+
+ /** Preallocate session config parameter */
+ u32 preallocated_sessions;
+
+} session_main_t;
+
+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;
- /** Per worker-thread vector of partially read events */
- session_fifo_event_t **free_event_vector;
+#define SESSION_Q_PROCESS_FLUSH_FRAMES 1
+#define SESSION_Q_PROCESS_STOP 2
- /** per-worker active event vectors */
- session_fifo_event_t **pending_event_vector;
+#define TRANSPORT_PROTO_INVALID (session_main.last_transport_proto_type + 1)
+#define TRANSPORT_N_PROTOS (session_main.last_transport_proto_type + 1)
- /** vpp fifo event queue */
- unix_shared_memory_queue_t **vpp_event_queues;
+static inline session_evt_elt_t *
+session_evt_elt_alloc (session_worker_t * wrk)
+{
+ session_evt_elt_t *elt;
+ pool_get (wrk->event_elts, elt);
+ return elt;
+}
- /** Unique segment name counter */
- u32 unique_segment_name_counter;
+static inline void
+session_evt_elt_free (session_worker_t * wrk, session_evt_elt_t * elt)
+{
+ pool_put (wrk->event_elts, elt);
+}
- /** Per transport rx function that can either dequeue or peek */
- session_fifo_rx_fn *session_tx_fns[SESSION_N_TYPES];
+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));
+}
- u8 is_enabled;
+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));
+}
- /* Convenience */
- vlib_main_t *vlib_main;
- vnet_main_t *vnet_main;
-#if SESSION_DBG
- /**
- * last event poll time by thread
- * Debug only. Will cause false cache-line sharing as-is
- */
- f64 *last_event_poll_by_thread;
-#endif
+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;
+}
-extern session_manager_main_t session_manager_main;
-extern vlib_node_registration_t session_queue_node;
+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));
+}
-/*
- * Session manager function
- */
-always_inline session_manager_main_t *
-vnet_get_session_manager_main ()
+static inline void
+session_evt_ctrl_data_free (session_worker_t * wrk, session_evt_elt_t * elt)
{
- return &session_manager_main;
+ ASSERT (elt->evt.event_type > SESSION_IO_EVT_BUILTIN_TX);
+ pool_put_index (wrk->ctrl_evts_data, elt->evt.ctrl_data_index);
}
-/*
- * Stream session functions
- */
+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;
+}
-stream_session_t *stream_session_lookup_listener4 (ip4_address_t * lcl,
- u16 lcl_port, u8 proto);
-stream_session_t *stream_session_lookup4 (ip4_address_t * lcl,
- ip4_address_t * rmt, u16 lcl_port,
- u16 rmt_port, u8 proto,
- u32 thread_index);
-stream_session_t *stream_session_lookup_listener6 (ip6_address_t * lcl,
- u16 lcl_port, u8 proto);
-stream_session_t *stream_session_lookup6 (ip6_address_t * lcl,
- ip6_address_t * rmt, u16 lcl_port,
- u16 rmt_port, u8, u32 thread_index);
-transport_connection_t
- * stream_session_lookup_transport4 (ip4_address_t * lcl,
- ip4_address_t * rmt, u16 lcl_port,
- u16 rmt_port, u8 proto,
- u32 thread_index);
-transport_connection_t
- * stream_session_lookup_transport6 (ip6_address_t * lcl,
- ip6_address_t * rmt, u16 lcl_port,
- u16 rmt_port, u8 proto,
- u32 thread_index);
-stream_session_t *stream_session_lookup_listener (ip46_address_t * lcl,
- u16 lcl_port, u8 proto);
-void stream_session_table_add_for_tc (transport_connection_t * tc, u64 value);
-int stream_session_table_del_for_tc (transport_connection_t * tc);
-
-always_inline stream_session_t *
-stream_session_get_tsi (u64 ti_and_si, u32 thread_index)
-{
- ASSERT ((u32) (ti_and_si >> 32) == thread_index);
- return pool_elt_at_index (session_manager_main.sessions[thread_index],
- ti_and_si & 0xFFFFFFFFULL);
-}
-
-always_inline stream_session_t *
-stream_session_get (u32 si, u32 thread_index)
-{
- return pool_elt_at_index (session_manager_main.sessions[thread_index], si);
-}
-
-always_inline stream_session_t *
-stream_session_get_if_valid (u64 si, u32 thread_index)
-{
- if (thread_index >= vec_len (session_manager_main.sessions))
+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 (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_main.wrk))
return 0;
- if (pool_is_free_index (session_manager_main.sessions[thread_index], si))
+ if (pool_is_free_index (session_main.wrk[thread_index].sessions, si))
return 0;
- return pool_elt_at_index (session_manager_main.sessions[thread_index], si);
+ ASSERT (session_is_valid (si, thread_index));
+ return pool_elt_at_index (session_main.wrk[thread_index].sessions, si);
}
-always_inline u64
-stream_session_handle (stream_session_t * s)
+always_inline session_t *
+session_get_from_handle (session_handle_t handle)
{
- return ((u64) s->thread_index << 32) | (u64) s->session_index;
+ 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);
}
-always_inline u32
-stream_session_index_from_handle (u64 handle)
+always_inline session_t *
+session_get_from_handle_if_valid (session_handle_t handle)
{
- return handle & 0xFFFFFFFF;
+ u32 session_index, thread_index;
+ session_parse_handle (handle, &session_index, &thread_index);
+ return session_get_if_valid (session_index, thread_index);
}
-always_inline u32
-stream_session_thread_from_handle (u64 handle)
+u64 session_segment_handle (session_t * s);
+
+/**
+ * Acquires a lock that blocks a session pool from expanding.
+ *
+ * This is typically used for safely peeking into other threads'
+ * pools in order to clone elements. Lock should be dropped as soon
+ * as possible by calling @ref session_pool_remove_peeker.
+ *
+ * NOTE: Avoid using pool_elt_at_index while the lock is held because
+ * it may lead to free elt bitmap expansion/contraction!
+ */
+always_inline void
+session_pool_add_peeker (u32 thread_index)
{
- return handle >> 32;
+ 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);
}
always_inline void
-stream_session_parse_handle (u64 handle, u32 * index, u32 * thread_index)
+session_pool_remove_peeker (u32 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);
+}
+
+/**
+ * Get session from handle and 'lock' pool resize if not in same thread
+ *
+ * Caller should drop the peek 'lock' as soon as possible.
+ */
+always_inline session_t *
+session_get_from_handle_safe (u64 handle)
{
- *index = stream_session_index_from_handle (handle);
- *thread_index = stream_session_thread_from_handle (handle);
+ u32 thread_index = session_thread_from_handle (handle);
+ session_worker_t *wrk = &session_main.wrk[thread_index];
+
+ if (thread_index == vlib_get_thread_index ())
+ {
+ return pool_elt_at_index (wrk->sessions,
+ session_index_from_handle (handle));
+ }
+ else
+ {
+ session_pool_add_peeker (thread_index);
+ /* Don't use pool_elt_at index. See @ref session_pool_add_peeker */
+ return wrk->sessions + session_index_from_handle (handle);
+ }
}
-always_inline stream_session_t *
-stream_session_get_from_handle (u64 handle)
+always_inline u32
+session_get_index (session_t * s)
{
- session_manager_main_t *smm = &session_manager_main;
- return pool_elt_at_index (smm->sessions[stream_session_thread_from_handle
- (handle)],
- stream_session_index_from_handle (handle));
+ return (s - session_main.wrk[s->thread_index].sessions);
}
-always_inline stream_session_t *
-stream_session_listener_get (u8 sst, u64 si)
+always_inline session_t *
+session_clone_safe (u32 session_index, u32 thread_index)
{
- return pool_elt_at_index (session_manager_main.listen_sessions[sst], si);
+ session_t *old_s, *new_s;
+ u32 current_thread_index = vlib_get_thread_index ();
+
+ /* If during the memcpy pool is reallocated AND the memory allocator
+ * decides to give the old chunk of memory to somebody in a hurry to
+ * scribble something on it, we have a problem. So add this thread as
+ * a session pool peeker.
+ */
+ session_pool_add_peeker (thread_index);
+ new_s = session_alloc (current_thread_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;
+ new_s->session_index = session_get_index (new_s);
+ return new_s;
}
+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_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);
+
+/*
+ * Interface to transport protos
+ */
+
+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 (session_t * s,
+ session_dgram_hdr_t * hdr,
+ vlib_buffer_t * b, u8 proto,
+ u8 queue_event);
+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);
+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,
+ 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
-stream_session_get_index (stream_session_t * s)
+transport_max_rx_enqueue (transport_connection_t * tc)
{
- if (s->session_state == SESSION_STATE_LISTENING)
- return s - session_manager_main.listen_sessions[s->session_type];
+ session_t *s = session_get (tc->s_index, tc->thread_index);
+ return svm_fifo_max_enqueue_prod (s->rx_fifo);
+}
- return s - session_manager_main.sessions[s->thread_index];
+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_cons (s->tx_fifo);
}
always_inline u32
-stream_session_max_rx_enqueue (transport_connection_t * tc)
+transport_max_rx_dequeue (transport_connection_t * tc)
{
- stream_session_t *s = stream_session_get (tc->s_index, tc->thread_index);
- return svm_fifo_max_enqueue (s->server_rx_fifo);
+ session_t *s = session_get (tc->s_index, tc->thread_index);
+ return svm_fifo_max_dequeue (s->rx_fifo);
}
always_inline u32
-stream_session_fifo_size (transport_connection_t * tc)
-{
- stream_session_t *s = stream_session_get (tc->s_index, tc->thread_index);
- return s->server_rx_fifo->nitems;
-}
-
-int
-stream_session_enqueue_data (transport_connection_t * tc, vlib_buffer_t * b,
- u32 offset, u8 queue_event, u8 is_in_order);
-u32
-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);
-
-void stream_session_connect_notify (transport_connection_t * tc, u8 sst,
- u8 is_fail);
-void stream_session_init_fifos_pointers (transport_connection_t * tc,
- u32 rx_pointer, u32 tx_pointer);
-
-void stream_session_accept_notify (transport_connection_t * tc);
-void stream_session_disconnect_notify (transport_connection_t * tc);
-void stream_session_delete_notify (transport_connection_t * tc);
-void stream_session_reset_notify (transport_connection_t * tc);
-int
-stream_session_accept (transport_connection_t * tc, u32 listener_index,
- u8 sst, u8 notify);
-int
-stream_session_open (u32 app_index, session_type_t st,
- transport_endpoint_t * tep,
- transport_connection_t ** tc);
-int stream_session_listen (stream_session_t * s, transport_endpoint_t * tep);
-int stream_session_stop_listen (stream_session_t * s);
-void stream_session_disconnect (stream_session_t * s);
-void stream_session_cleanup (stream_session_t * s);
-void session_send_session_evt_to_thread (u64 session_handle,
- fifo_event_type_t evt_type,
- u32 thread_index);
-u8 *format_stream_session (u8 * s, va_list * args);
-int
-send_session_connected_callback (u32 app_index, u32 api_context,
- stream_session_t * s, u8 is_fail);
-
-
-void session_register_transport (u8 type, const transport_proto_vft_t * vft);
-transport_proto_vft_t *session_get_transport_vft (u8 type);
+transport_rx_fifo_size (transport_connection_t * tc)
+{
+ session_t *s = session_get (tc->s_index, tc->thread_index);
+ return svm_fifo_size (s->rx_fifo);
+}
-clib_error_t *vnet_session_enable_disable (vlib_main_t * vm, u8 is_en);
+always_inline u32
+transport_tx_fifo_size (transport_connection_t * tc)
+{
+ session_t *s = session_get (tc->s_index, tc->thread_index);
+ return svm_fifo_size (s->tx_fifo);
+}
-always_inline unix_shared_memory_queue_t *
-session_manager_get_vpp_event_queue (u32 thread_index)
+always_inline u8
+transport_rx_fifo_has_ooo_data (transport_connection_t * tc)
{
- return session_manager_main.vpp_event_queues[thread_index];
+ session_t *s = session_get (tc->c_index, tc->thread_index);
+ return svm_fifo_has_ooo_data (s->rx_fifo);
}
-int session_manager_flush_enqueue_events (u32 thread_index);
+always_inline clib_time_type_t
+transport_time_now (u32 thread_index)
+{
+ return session_main.wrk[thread_index].last_vlib_time;
+}
-always_inline u64
-listen_session_get_handle (stream_session_t * s)
+always_inline clib_us_time_t
+transport_us_time_now (u32 thread_index)
{
- ASSERT (s->session_state == SESSION_STATE_LISTENING);
- return ((u64) s->session_type << 32) | s->session_index;
+ return session_main.wrk[thread_index].last_vlib_us_time;
}
-always_inline stream_session_t *
-listen_session_get_from_handle (u64 handle)
+always_inline void
+transport_add_tx_event (transport_connection_t * tc)
{
- session_manager_main_t *smm = &session_manager_main;
- stream_session_t *s;
- u32 type, index;
- type = handle >> 32;
- index = handle & 0xFFFFFFFF;
+ session_t *s = session_get (tc->s_index, tc->thread_index);
+ if (svm_fifo_has_event (s->tx_fifo))
+ return;
+ session_send_io_evt_to_thread (s->tx_fifo, SESSION_IO_EVT_TX);
+}
- if (pool_is_free_index (smm->listen_sessions[type], index))
- return 0;
+/*
+ * Listen sessions
+ */
- s = pool_elt_at_index (smm->listen_sessions[type], index);
- ASSERT (s->session_state == SESSION_STATE_LISTENING);
- return s;
+always_inline u64
+listen_session_get_handle (session_t * s)
+{
+ ASSERT (s->session_state == SESSION_STATE_LISTENING ||
+ session_get_transport_proto (s) == TRANSPORT_PROTO_QUIC);
+ return session_handle (s);
}
-always_inline stream_session_t *
-listen_session_new (session_type_t type)
+always_inline session_t *
+listen_session_get_from_handle (session_handle_t handle)
{
- stream_session_t *s;
- pool_get_aligned (session_manager_main.listen_sessions[type], s,
- CLIB_CACHE_LINE_BYTES);
- memset (s, 0, sizeof (*s));
+ return session_get_from_handle (handle);
+}
+always_inline void
+listen_session_parse_handle (session_handle_t handle, u32 * index,
+ u32 * thread_index)
+{
+ session_parse_handle (handle, index, thread_index);
+}
+
+always_inline session_t *
+listen_session_alloc (u8 thread_index, session_type_t type)
+{
+ session_t *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)
+always_inline session_t *
+listen_session_get (u32 ls_index)
{
- return pool_elt_at_index (session_manager_main.listen_sessions[type],
- index);
+ return session_get (ls_index, 0);
}
always_inline void
-listen_session_del (stream_session_t * s)
+listen_session_free (session_t * s)
{
- pool_put (session_manager_main.listen_sessions[s->session_type], s);
+ session_free (s);
+}
+
+transport_connection_t *listen_session_get_transport (session_t * s);
+
+/*
+ * Session layer functions
+ */
+
+always_inline session_main_t *
+vnet_get_session_main ()
+{
+ return &session_main;
+}
+
+always_inline session_worker_t *
+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)
+{
+ 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_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__ */
/*
Code Review / vpp.git / blobdiff