#ifndef __included_session_h__
#define __included_session_h__
-#include <vnet/session/transport.h>
+#include <vnet/session/stream_session.h>
+#include <vnet/session/session_lookup.h>
+#include <vnet/session/transport_interface.h>
#include <vlibmemory/unix_shared_memory_queue.h>
#include <vnet/session/session_debug.h>
#include <vnet/session/segment_manager.h>
FIFO_EVENT_RPC,
} fifo_event_type_t;
+static inline const char *
+fifo_event_type_str (fifo_event_type_t et)
+{
+ switch (et)
+ {
+ case FIFO_EVENT_APP_RX:
+ return "FIFO_EVENT_APP_RX";
+ case FIFO_EVENT_APP_TX:
+ return "FIFO_EVENT_APP_TX";
+ case FIFO_EVENT_TIMEOUT:
+ return "FIFO_EVENT_TIMEOUT";
+ case FIFO_EVENT_DISCONNECT:
+ return "FIFO_EVENT_DISCONNECT";
+ case FIFO_EVENT_BUILTIN_RX:
+ return "FIFO_EVENT_BUILTIN_RX";
+ case FIFO_EVENT_RPC:
+ return "FIFO_EVENT_RPC";
+ default:
+ return "UNKNOWN FIFO EVENT";
+ }
+}
+
#define foreach_session_input_error \
_(NO_SESSION, "No session drops") \
_(NO_LISTENER, "No listener for dst port drops") \
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
-{
-#define _(A, a) SESSION_TYPE_##A,
- foreach_session_type
-#undef _
- SESSION_N_TYPES,
-} session_type_t;
-
-/*
- * Application session state
- */
-typedef enum
-{
- SESSION_STATE_LISTENING,
- SESSION_STATE_CONNECTING,
- SESSION_STATE_READY,
- SESSION_STATE_CLOSED,
- SESSION_STATE_N_STATES,
-} stream_session_state_t;
-
typedef struct
{
void *fp;
}) session_fifo_event_t;
/* *INDENT-ON* */
-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;
-
- /** Type */
- u8 session_type;
-
- /** State */
- u8 session_state;
-
- u8 thread_index;
-
- /** To avoid n**2 "one event per frame" check */
- u8 enqueue_epoch;
-
- /** Pad to a multiple of 8 octets */
- u8 align_pad[4];
-
- /** svm segment index where fifos were allocated */
- u32 svm_segment_index;
-
- /** Session index in per_thread pool */
- u32 session_index;
-
- /** Transport specific */
- u32 connection_index;
-
- /** Application specific */
- u32 pid;
-
- /** stream server pool index */
- u32 app_index;
-
- /** Parent listener session if the result of an accept */
- u32 listener_index;
-
- /** Opaque, pad to a 64-octet boundary */
- u64 opaque[2];
-} stream_session_t;
-
/* Forward definition */
typedef struct _session_manager_main session_manager_main_t;
extern session_fifo_rx_fn session_tx_fifo_peek_and_snd;
extern session_fifo_rx_fn session_tx_fifo_dequeue_and_snd;
+u8 session_node_lookup_fifo_event (svm_fifo_t * f, session_fifo_event_t * e);
+
struct _session_manager_main
{
- /** Lookup tables for established sessions and listeners */
- clib_bihash_16_8_t v4_session_hash;
- clib_bihash_48_8_t v6_session_hash;
-
- /** Lookup tables for half-open sessions */
- clib_bihash_16_8_t v4_half_open_hash;
- clib_bihash_48_8_t v6_half_open_hash;
-
/** Per worker thread session pools */
stream_session_t **sessions;
/** vpp fifo event queue configured length */
u32 configured_event_queue_length;
+ /** 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;
+
/** Unique segment name counter */
u32 unique_segment_name_counter;
/** Per transport rx function that can either dequeue or peek */
session_fifo_rx_fn *session_tx_fns[SESSION_N_TYPES];
+ /** Session manager is enabled */
u8 is_enabled;
- /* Convenience */
- vlib_main_t *vlib_main;
- vnet_main_t *vnet_main;
+ /** Preallocate session config parameter */
+ u32 preallocated_sessions;
#if SESSION_DBG
/**
return &session_manager_main;
}
-/*
- * Stream session functions
- */
-
-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)
+always_inline u8
+stream_session_is_valid (u32 si, u8 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);
+ stream_session_t *s;
+ s = pool_elt_at_index (session_manager_main.sessions[thread_index], 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;
}
always_inline stream_session_t *
-stream_session_get (u32 si, u32 thread_index)
+session_get (u32 si, u32 thread_index)
{
+ ASSERT (stream_session_is_valid (si, thread_index));
return pool_elt_at_index (session_manager_main.sessions[thread_index], si);
}
if (pool_is_free_index (session_manager_main.sessions[thread_index], si))
return 0;
+ ASSERT (stream_session_is_valid (si, thread_index));
return pool_elt_at_index (session_manager_main.sessions[thread_index], si);
}
}
always_inline u32
-stream_session_index_from_handle (u64 handle)
+session_index_from_handle (u64 handle)
{
return handle & 0xFFFFFFFF;
}
always_inline u32
-stream_session_thread_from_handle (u64 handle)
+session_thread_from_handle (u64 handle)
{
return handle >> 32;
}
always_inline void
-stream_session_parse_handle (u64 handle, u32 * index, u32 * thread_index)
+session_parse_handle (u64 handle, u32 * index, u32 * thread_index)
{
- *index = stream_session_index_from_handle (handle);
- *thread_index = stream_session_thread_from_handle (handle);
+ *index = session_index_from_handle (handle);
+ *thread_index = session_thread_from_handle (handle);
}
always_inline stream_session_t *
-stream_session_get_from_handle (u64 handle)
+session_get_from_handle (u64 handle)
{
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
+ pool_elt_at_index (smm->sessions[session_thread_from_handle (handle)],
+ session_index_from_handle (handle));
}
always_inline stream_session_t *
always_inline u32
stream_session_max_rx_enqueue (transport_connection_t * tc)
{
- stream_session_t *s = stream_session_get (tc->s_index, tc->thread_index);
+ stream_session_t *s = session_get (tc->s_index, tc->thread_index);
return svm_fifo_max_enqueue (s->server_rx_fifo);
}
always_inline u32
stream_session_rx_fifo_size (transport_connection_t * tc)
{
- stream_session_t *s = stream_session_get (tc->s_index, tc->thread_index);
+ stream_session_t *s = session_get (tc->s_index, tc->thread_index);
return s->server_rx_fifo->nitems;
}
u32 offset, u32 max_bytes);
u32 stream_session_dequeue_drop (transport_connection_t * tc, u32 max_bytes);
-int stream_session_connect_notify (transport_connection_t * tc, u8 sst,
- u8 is_fail);
+int stream_session_connect_notify (transport_connection_t * tc, u8 is_fail);
void stream_session_init_fifos_pointers (transport_connection_t * tc,
u32 rx_pointer, u32 tx_pointer);
void stream_session_reset_notify (transport_connection_t * tc);
int
stream_session_accept (transport_connection_t * tc, u32 listener_index,
- u8 sst, u8 notify);
+ u8 notify);
int
-stream_session_open (u32 app_index, session_type_t st,
- transport_endpoint_t * tep,
+stream_session_open (u32 app_index, session_endpoint_t * tep,
transport_connection_t ** tc);
-int stream_session_listen (stream_session_t * s, transport_endpoint_t * tep);
+int stream_session_listen (stream_session_t * s, session_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);
+uword unformat_stream_session (unformat_input_t * input, va_list * args);
+uword unformat_transport_connection (unformat_input_t * input,
+ 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);
-
clib_error_t *vnet_session_enable_disable (vlib_main_t * vm, u8 is_en);
always_inline unix_shared_memory_queue_t *
pool_put (session_manager_main.listen_sessions[s->session_type], s);
}
+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 type, u32 index)
+{
+ return pool_elt_at_index (session_manager_main.listen_sessions[type],
+ index);
+}
+
+always_inline void
+session_manager_set_transport_rx_fn (u8 type, u8 is_peek)
+{
+ /* If an offset function is provided, then peek instead of dequeue */
+ session_manager_main.session_tx_fns[type] = (is_peek) ?
+ session_tx_fifo_peek_and_snd : session_tx_fifo_dequeue_and_snd;
+}
+
+session_type_t
+session_type_from_proto_and_ip (transport_proto_t proto, u8 is_ip4);
+
always_inline u8
session_manager_is_enabled ()
{
return session_manager_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"); \
+} while (0)
+
#endif /* __included_session_h__ */
/*
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