#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 <svm/message_queue.h>
-#include <svm/ssvm.h>
+#include <svm/fifo_segment.h>
#define foreach_session_input_error \
_(NO_SESSION, "No session drops") \
_(FIFO_FULL, "Packets dropped for lack of rx fifo space") \
_(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") \
-_(SEG_CREATE, "Couldn't create a new segment")
typedef enum
{
foreach_session_input_error
#undef _
SESSION_N_ERROR,
-} session_error_t;
+} session_input_error_t;
typedef struct session_tx_context_
{
session_t *s;
transport_proto_vft_t *transport_vft;
transport_connection_t *tc;
+ 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;
+ u16 n_bufs_needed;
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 enum session_wrk_state_
+{
+ SESSION_WRK_POLLING,
+ SESSION_WRK_INTERRUPT,
+ SESSION_WRK_IDLE,
+} __clib_packed session_wrk_state_t;
+
+typedef enum session_wrk_flags_
+{
+ SESSION_WRK_F_ADAPTIVE = 1 << 0,
+} __clib_packed session_wrk_flag_t;
+
typedef struct session_worker_
{
CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
/** 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;
+
+ /** Timerfd used to periodically signal wrk session queue node */
+ u32 timerfd;
+
+ /** Worker flags */
+ session_wrk_flag_t flags;
+
+ /** Worker state */
+ session_wrk_state_t state;
/** Context for session tx */
session_tx_context_t ctx;
/** 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;
+ /** Vector of nexts for the pending tx buffers */
+ u16 *pending_tx_nexts;
+
+ /** Clib file for timerfd. Used only if adaptive mode is on */
+ uword timerfd_file;
+
+#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;
/** Worker contexts */
session_worker_t *wrk;
- /** Event queues memfd segment initialized only if so configured */
- ssvm_private_t evt_qs_segment;
+ /** Event queues memfd segment */
+ fifo_segment_t evt_qs_segment;
/** Unique segment name counter */
u32 unique_segment_name_counter;
* 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;
+ /** Session manager initialized (not necessarily enabled) */
+ u8 is_initialized;
+
+ /** Enable session manager at startup */
+ u8 session_enable_asap;
+
+ /** Poll session node in main thread */
+ u8 poll_main;
+
+ /** Allocate private rx mqs for external apps */
+ u8 use_private_rx_mqs;
+
+ /** Do not enable session queue node adaptive mode */
+ u8 no_adaptive;
+
/** vpp fifo event queue configured length */
u32 configured_event_queue_length;
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;
/** 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;
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
+typedef enum session_q_process_evt_
+{
+ SESSION_Q_PROCESS_RUN_ON_MAIN = 1,
+ SESSION_Q_PROCESS_STOP
+} session_q_process_evt_t;
-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;
+}
+
+int session_wrk_handle_mq (session_worker_t *wrk, svm_msg_q_t *mq);
+
session_t *session_alloc (u32 thread_index);
void session_free (session_t * s);
void session_free_w_fifos (session_t * s);
+void session_cleanup_half_open (transport_proto_t tp,
+ session_handle_t ho_handle);
+u8 session_is_valid (u32 si, u8 thread_index);
always_inline session_t *
session_get (u32 si, u32 thread_index)
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);
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);
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_stream_connect_notify (transport_connection_t * tc,
+ session_error_t err);
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_half_open_delete_notify (transport_proto_t tp,
+ session_handle_t ho_handle);
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);
+int session_dgram_accept (transport_connection_t * tc, u32 listener_index,
+ u32 thread_index);
+/**
+ * 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);
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
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 clib_time_type_t
+transport_seconds_per_loop (u32 thread_index)
+{
+ return session_main.wrk[thread_index].vm->seconds_per_loop;
}
always_inline void
always_inline void
listen_session_free (session_t * s)
{
+ ASSERT (!s->rx_fifo);
session_free (s);
}
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)
{
#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);
-ssvm_private_t *session_main_get_evt_q_segment (void);
+void session_queue_run_on_main_thread (vlib_main_t * vm);
+
+/**
+ * Add session node pending buffer with custom node
+ *
+ * @param thread_index worker thread expected to send the buffer
+ * @param bi buffer index
+ * @param next_node next node edge index for buffer. Edge to next node
+ * must exist
+ */
+always_inline void
+session_add_pending_tx_buffer (u32 thread_index, u32 bi, u32 next_node)
+{
+ session_worker_t *wrk = session_main_get_worker (thread_index);
+ vec_add1 (wrk->pending_tx_buffers, bi);
+ vec_add1 (wrk->pending_tx_nexts, next_node);
+ if (PREDICT_FALSE (wrk->state == SESSION_WRK_INTERRUPT))
+ vlib_node_set_interrupt_pending (wrk->vm, session_queue_node.index);
+}
+
+always_inline void
+session_wrk_update_time (session_worker_t *wrk, f64 now)
+{
+ wrk->last_vlib_time = now;
+ wrk->last_vlib_us_time = wrk->last_vlib_time * CLIB_US_TIME_FREQ;
+}
+
+void session_wrk_enable_adaptive_mode (session_worker_t *wrk);
+fifo_segment_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__ */
/*
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