X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=src%2Fvnet%2Fsession%2Fsession.h;h=108e5fe259a932fe2353dfea211b31df753b01e7;hb=f8f516a;hp=6878b4d25c8a84c25d147f7c9d044c56c72ac5fb;hpb=3e350af5d3e9744a4529a28dd293b2d4601442f7;p=vpp.git diff --git a/src/vnet/session/session.h b/src/vnet/session/session.h index 6878b4d25c8..108e5fe259a 100644 --- a/src/vnet/session/session.h +++ b/src/vnet/session/session.h @@ -15,28 +15,52 @@ #ifndef __included_session_h__ #define __included_session_h__ -#include -#include -#include -#include -#include +#include +#include +#include #include +#include +#include #define HALF_OPEN_LOOKUP_INVALID_VALUE ((u64)~0) #define INVALID_INDEX ((u32)~0) +#define SESSION_PROXY_LISTENER_INDEX ((u32)~0 - 1) /* 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_SERVER_RX, - FIFO_EVENT_SERVER_TX, + FIFO_EVENT_APP_RX, + FIFO_EVENT_APP_TX, FIFO_EVENT_TIMEOUT, - FIFO_EVENT_SERVER_EXIT, - FIFO_EVENT_BUILTIN_RX + FIFO_EVENT_DISCONNECT, + FIFO_EVENT_BUILTIN_RX, + 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") \ @@ -46,7 +70,8 @@ _(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") +_(NO_SPACE, "Couldn't allocate a fifo pair") \ +_(SEG_CREATE, "Couldn't create a new segment") typedef enum { @@ -56,104 +81,27 @@ typedef enum SESSION_N_ERROR, } session_error_t; -/* Event queue input node static next indices */ -typedef enum +typedef struct { - 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; + void *fp; + void *arg; +} rpc_args_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 u64 session_handle_t; /* *INDENT-OFF* */ typedef CLIB_PACKED (struct { - svm_fifo_t * fifo; + union + { + svm_fifo_t * fifo; + session_handle_t session_handle; + rpc_args_t rpc_args; + }; u8 event_type; - u16 event_id; + u8 postponed; }) 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; - - /** used during unbind processing */ - u8 is_deleted; - - /** To avoid n**2 "one event per frame" check */ - u8 enqueue_epoch; - - /** 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; - - /** svm segment index */ - u32 server_segment_index; -} stream_session_t; - -typedef struct _session_manager -{ - /** segments mapped by this server */ - u32 *segment_indices; - - /** Session fifo sizes. They are provided for binds and take default - * values for connects */ - u32 rx_fifo_size; - u32 tx_fifo_size; - - /** Configured additional segment size */ - u32 add_segment_size; - - /** Flag that indicates if additional segments should be created */ - u8 add_segment; -} session_manager_t; - /* Forward definition */ typedef struct _session_manager_main session_manager_main_t; @@ -166,59 +114,86 @@ typedef int 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; - /** Pool of listen sessions. Same type as stream sessions to ease lookups */ - stream_session_t *listen_sessions[SESSION_N_TYPES]; + /** Per worker-thread session pool peekers rw locks */ + clib_rwlock_t *peekers_rw_locks; - /** Sparse vector to map dst port to stream server */ - u16 *stream_server_by_dst_port[SESSION_N_TYPES]; + /** Pool of listen sessions. Same type as stream sessions to ease lookups */ + stream_session_t **listen_sessions; - /** per-worker enqueue epoch counters */ - u8 *current_enqueue_epoch; + /** Per-proto, per-worker enqueue epoch counters */ + u32 *current_enqueue_epoch[TRANSPORT_N_PROTO]; - /** Per-worker thread vector of sessions to enqueue */ - u32 **session_indices_to_enqueue_by_thread; + /** Per-proto, per-worker thread vector of sessions to enqueue */ + u32 **session_to_enqueue[TRANSPORT_N_PROTO]; /** per-worker tx buffer free lists */ u32 **tx_buffers; /** Per worker-thread vector of partially read events */ - session_fifo_event_t **evts_partially_read; + session_fifo_event_t **free_event_vector; /** per-worker active event vectors */ - session_fifo_event_t **fifo_events; + session_fifo_event_t **pending_event_vector; + + /** per-worker postponed disconnects */ + session_fifo_event_t **pending_disconnects; /** vpp fifo event queue */ - unix_shared_memory_queue_t **vpp_event_queues; + svm_queue_t **vpp_event_queues; + + /** Event queues memfd segment initialized only if so configured */ + ssvm_private_t evt_qs_segment; /** Unique segment name counter */ u32 unique_segment_name_counter; - /* Connection manager used by incoming connects */ - u32 connect_manager_index[SESSION_N_TYPES]; - - session_manager_t *session_managers; - /** Per transport rx function that can either dequeue or peek */ - session_fifo_rx_fn *session_tx_fns[SESSION_N_TYPES]; + session_fifo_rx_fn **session_tx_fns; + + /** 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; + /** Session manager is enabled */ u8 is_enabled; - /* Convenience */ - vlib_main_t *vlib_main; - vnet_main_t *vnet_main; + /** vpp fifo event queue configured length */ + u32 configured_event_queue_length; + + /* + * Config parameters + */ + + /** Session ssvm segment configs*/ + uword session_baseva; + uword session_va_space_size; + u32 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; #if SESSION_DBG /** @@ -242,89 +217,173 @@ vnet_get_session_manager_main () return &session_manager_main; } -always_inline session_manager_t * -session_manager_get (u32 index) +always_inline u8 +stream_session_is_valid (u32 si, u8 thread_index) { - return pool_elt_at_index (session_manager_main.session_managers, index); + 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 unix_shared_memory_queue_t * -session_manager_get_vpp_event_queue (u32 thread_index) +stream_session_t *session_alloc (u32 thread_index); + +always_inline stream_session_t * +session_get (u32 si, u32 thread_index) { - return session_manager_main.vpp_event_queues[thread_index]; + ASSERT (stream_session_is_valid (si, thread_index)); + return pool_elt_at_index (session_manager_main.sessions[thread_index], si); } -always_inline session_manager_t * -connects_session_manager_get (session_manager_main_t * smm, - session_type_t session_type) +always_inline stream_session_t * +session_get_if_valid (u64 si, u32 thread_index) { - return pool_elt_at_index (smm->session_managers, - smm->connect_manager_index[session_type]); + if (thread_index >= vec_len (session_manager_main.sessions)) + return 0; + + 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); } -void session_manager_get_segment_info (u32 index, u8 ** name, u32 * size); -int session_manager_flush_enqueue_events (u32 thread_index); -int -session_manager_add_first_segment (session_manager_main_t * smm, - session_manager_t * sm, u32 segment_size, - u8 ** segment_name); -void -session_manager_del (session_manager_main_t * smm, session_manager_t * sm); -void -connects_session_manager_init (session_manager_main_t * smm, u8 session_type); +always_inline session_handle_t +session_handle (stream_session_t * s) +{ + return ((u64) s->thread_index << 32) | (u64) s->session_index; +} -/* - * Stream session functions - */ +always_inline u32 +session_index_from_handle (session_handle_t handle) +{ + return handle & 0xFFFFFFFF; +} -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); +always_inline u32 +session_thread_from_handle (session_handle_t handle) +{ + return handle >> 32; +} -always_inline stream_session_t * -stream_session_get_tsi (u64 ti_and_si, u32 thread_index) +always_inline void +session_parse_handle (session_handle_t handle, u32 * index, + 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); + *index = session_index_from_handle (handle); + *thread_index = session_thread_from_handle (handle); } always_inline stream_session_t * -stream_session_get (u64 si, u32 thread_index) +session_get_from_handle (session_handle_t handle) { - return pool_elt_at_index (session_manager_main.sessions[thread_index], si); + session_manager_main_t *smm = &session_manager_main; + u32 session_index, thread_index; + session_parse_handle (handle, &session_index, &thread_index); + return pool_elt_at_index (smm->sessions[thread_index], session_index); } always_inline stream_session_t * -stream_session_get_if_valid (u64 si, u32 thread_index) +session_get_from_handle_if_valid (session_handle_t handle) { - if (thread_index >= vec_len (session_manager_main.sessions)) - return 0; + u32 session_index, thread_index; + session_parse_handle (handle, &session_index, &thread_index); + return session_get_if_valid (session_index, thread_index); +} - if (pool_is_free_index (session_manager_main.sessions[thread_index], si)) - return 0; +always_inline u8 +session_handle_is_local (session_handle_t handle) +{ + if ((handle >> 32) == SESSION_LOCAL_TABLE_PREFIX) + return 1; + return 0; +} - return pool_elt_at_index (session_manager_main.sessions[thread_index], si); +always_inline transport_proto_t +session_type_transport_proto (session_type_t st) +{ + return (st >> 1); +} + +always_inline transport_proto_t +session_get_transport_proto (stream_session_t * s) +{ + return (s->session_type >> 1); +} + +always_inline fib_protocol_t +session_get_fib_proto (stream_session_t * s) +{ + u8 is_ip4 = s->session_type & 1; + return (is_ip4 ? FIB_PROTOCOL_IP4 : FIB_PROTOCOL_IP6); +} + +always_inline session_type_t +session_type_from_proto_and_ip (transport_proto_t proto, u8 is_ip4) +{ + return (proto << 1 | is_ip4); +} + +always_inline u8 +session_has_transport (stream_session_t * s) +{ + return (session_get_transport_proto (s) != TRANSPORT_PROTO_NONE); +} + +/** + * 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) +{ + session_manager_main_t *smm = &session_manager_main; + if (thread_index == vlib_get_thread_index ()) + return; + clib_rwlock_reader_lock (&smm->peekers_rw_locks[thread_index]); +} + +always_inline void +session_pool_remove_peeker (u32 thread_index) +{ + session_manager_main_t *smm = &session_manager_main; + if (thread_index == vlib_get_thread_index ()) + return; + clib_rwlock_reader_unlock (&smm->peekers_rw_locks[thread_index]); +} + +/** + * 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 stream_session_t * +session_get_from_handle_safe (u64 handle) +{ + session_manager_main_t *smm = &session_manager_main; + u32 thread_index = session_thread_from_handle (handle); + if (thread_index == vlib_get_thread_index ()) + { + return pool_elt_at_index (smm->sessions[thread_index], + 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 smm->sessions[thread_index] + session_index_from_handle (handle); + } } always_inline stream_session_t * @@ -345,51 +404,194 @@ stream_session_get_index (stream_session_t * s) 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_fifo_size (transport_connection_t * tc) +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; } +always_inline u32 +session_get_index (stream_session_t * s) +{ + return (s - session_manager_main.sessions[s->thread_index]); +} + +always_inline stream_session_t * +session_clone_safe (u32 session_index, u32 thread_index) +{ + stream_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_manager_main.sessions[thread_index] + session_index; + clib_memcpy (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; +} + +transport_connection_t *session_get_transport (stream_session_t * s); + +u32 stream_session_tx_fifo_max_dequeue (transport_connection_t * tc); + +stream_session_t *session_alloc (u32 thread_index); int -stream_session_enqueue_data (transport_connection_t * tc, u8 * data, u16 len, - u8 queue_event); -u32 -stream_session_peek_bytes (transport_connection_t * tc, u8 * buffer, - u32 offset, u32 max_bytes); +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 (stream_session_t * s, 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 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); +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, + stream_session_t ** new_session); +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 (u8 sst, ip46_address_t * addr, - u16 port_host_byte_order, u32 api_client_index); +int stream_session_accept (transport_connection_t * tc, u32 listener_index, + u8 notify); +int session_open (u32 app_index, session_endpoint_t * tep, u32 opaque); +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_disconnect_transport (stream_session_t * s); void stream_session_cleanup (stream_session_t * s); -int -stream_session_start_listen (u32 server_index, ip46_address_t * ip, u16 port); -void stream_session_stop_listen (u32 server_index); +void session_send_session_evt_to_thread (u64 session_handle, + fifo_event_type_t evt_type, + u32 thread_index); +ssvm_private_t *session_manager_get_evt_q_segment (void); 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); -void session_register_transport (u8 type, const transport_proto_vft_t * vft); -transport_proto_vft_t *session_get_transport_vft (u8 type); +void session_register_transport (transport_proto_t transport_proto, + const transport_proto_vft_t * vft, u8 is_ip4, + u32 output_node); clib_error_t *vnet_session_enable_disable (vlib_main_t * vm, u8 is_en); +always_inline svm_queue_t * +session_manager_get_vpp_event_queue (u32 thread_index) +{ + return session_manager_main.vpp_event_queues[thread_index]; +} + +int session_manager_flush_enqueue_events (u8 proto, u32 thread_index); + +always_inline u64 +listen_session_get_handle (stream_session_t * s) +{ + ASSERT (s->session_state == SESSION_STATE_LISTENING); + return ((u64) s->session_type << 32) | s->session_index; +} + +always_inline stream_session_t * +listen_session_get_from_handle (session_handle_t handle) +{ + session_manager_main_t *smm = &session_manager_main; + stream_session_t *s; + u32 type, index; + type = handle >> 32; + index = handle & 0xFFFFFFFF; + + if (pool_is_free_index (smm->listen_sessions[type], index)) + return 0; + + s = pool_elt_at_index (smm->listen_sessions[type], index); + ASSERT (s->session_state == SESSION_STATE_LISTENING); + return s; +} + +always_inline stream_session_t * +listen_session_new (session_type_t type) +{ + stream_session_t *s; + pool_get_aligned (session_manager_main.listen_sessions[type], s, + CLIB_CACHE_LINE_BYTES); + memset (s, 0, sizeof (*s)); + + 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) +{ + return pool_elt_at_index (session_manager_main.listen_sessions[type], + index); +} + +always_inline void +listen_session_del (stream_session_t * s) +{ + pool_put (session_manager_main.listen_sessions[s->session_type], s); +} + +transport_connection_t *listen_session_get_transport (stream_session_t * 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 session_type, u32 index) +{ + return + pool_elt_at_index (session_manager_main.listen_sessions[session_type], + index); +} + +/** + * Set peek or dequeue function for given session type + * + * Reliable transport protocols will probably want to use a peek function + */ +always_inline void +session_manager_set_transport_rx_fn (session_type_t type, u8 is_peek) +{ + session_manager_main.session_tx_fns[type] = (is_peek) ? + session_tx_fifo_peek_and_snd : session_tx_fifo_dequeue_and_snd; +} + +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) + +void session_node_enable_disable (u8 is_en); + #endif /* __included_session_h__ */ /*