#include <svm/fifo_segment.h>
#include <vlib/dma/dma.h>
-#define foreach_session_input_error \
-_(NO_SESSION, "No session drops") \
-_(NO_LISTENER, "No listener for dst port drops") \
-_(ENQUEUED, "Packets pushed into rx fifo") \
-_(NOT_READY, "Session not ready packets") \
-_(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") \
-
-typedef enum
-{
-#define _(sym,str) SESSION_ERROR_##sym,
- foreach_session_input_error
-#undef _
- SESSION_N_ERROR,
-} session_input_error_t;
+typedef struct session_wrk_stats_
+{
+ u32 errors[SESSION_N_ERRORS];
+} session_wrk_stats_t;
typedef struct session_tx_context_
{
/** Flag that is set if main thread signaled to handle connects */
u32 n_pending_connects;
- /** Main thread loops in poll mode without a connect */
- u32 no_connect_loops;
-
/** List head for first worker evts pending handling on main */
clib_llist_index_t evts_pending_main;
u16 batch_num;
vlib_dma_batch_t *batch;
+ session_wrk_stats_t stats;
+
#if SESSION_DEBUG
/** last event poll time by thread */
clib_time_type_t last_event_poll;
u8 session_node_lookup_fifo_event (svm_fifo_t * f, session_event_t * e);
typedef void (*session_update_time_fn) (f64 time_now, u8 thread_index);
+typedef void (*nat44_original_dst_lookup_fn) (
+ ip4_address_t *i2o_src, u16 i2o_src_port, ip4_address_t *i2o_dst,
+ u16 i2o_dst_port, ip_protocol_t proto, u32 *original_dst,
+ u16 *original_dst_port);
typedef struct session_main_
{
* Trade memory for speed, for now */
u32 *session_type_to_next;
- /** Thread for cl and ho that rely on cl allocs */
+ /** Thread used for allocating active open connections, i.e., half-opens
+ * for transports like tcp, and sessions that will be migrated for cl
+ * transports like udp. If vpp has workers, this will be first worker. */
u32 transport_cl_thread;
transport_proto_t last_transport_proto_type;
u32 preallocated_sessions;
u16 msg_id_base;
+
+ /** Query nat44-ed session to get original dst ip4 & dst port. */
+ nat44_original_dst_lookup_fn original_dst_lookup;
} session_main_t;
extern session_main_t session_main;
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);
+ ASSERT (elt->evt.event_type >= SESSION_CTRL_EVT_RPC);
pool_put_index (wrk->ctrl_evts_data, elt->evt.ctrl_data_index);
}
u32 offset, u32 max_bytes);
u32 session_tx_fifo_dequeue_drop (transport_connection_t * tc, u32 max_bytes);
+always_inline void
+session_set_state (session_t *s, session_state_t session_state)
+{
+ s->session_state = session_state;
+ SESSION_EVT (SESSION_EVT_STATE_CHANGE, s);
+}
+
always_inline u32
transport_max_rx_enqueue (transport_connection_t * tc)
{
return svm_fifo_has_ooo_data (s->rx_fifo);
}
+always_inline u32
+transport_tx_fifo_has_dgram (transport_connection_t *tc)
+{
+ session_t *s = session_get (tc->s_index, tc->thread_index);
+ u32 max_deq = svm_fifo_max_dequeue_cons (s->tx_fifo);
+ session_dgram_pre_hdr_t phdr;
+
+ if (max_deq <= sizeof (session_dgram_hdr_t))
+ return 0;
+ svm_fifo_peek (s->tx_fifo, 0, sizeof (phdr), (u8 *) &phdr);
+ return max_deq >= phdr.data_length + sizeof (session_dgram_hdr_t);
+}
+
always_inline void
transport_rx_fifo_req_deq_ntf (transport_connection_t *tc)
{
return session_main.transport_cl_thread;
}
+always_inline u32
+session_vlib_thread_is_cl_thread (void)
+{
+ return (vlib_get_thread_index () == transport_cl_thread () ||
+ vlib_thread_is_main_w_barrier ());
+}
+
/*
* Listen sessions
*/
ho_session_alloc (void)
{
session_t *s;
- ASSERT (vlib_get_thread_index () == 0);
- s = session_alloc (0);
+ ASSERT (session_vlib_thread_is_cl_thread ());
+ s = session_alloc (transport_cl_thread ());
s->session_state = SESSION_STATE_CONNECTING;
s->flags |= SESSION_F_HALF_OPEN;
- /* Not ideal. Half-opens are only allocated from main with worker barrier
- * but can be cleaned up, i.e., session_half_open_free, from main without
- * a barrier. In debug images, the free_bitmap can grow while workers peek
- * the sessions pool, e.g., session_half_open_migrate_notify, and as a
- * result crash while validating the session. To avoid this, grow the bitmap
- * now. */
- if (CLIB_DEBUG)
- {
- session_t *sp = session_main.wrk[0].sessions;
- clib_bitmap_validate (pool_header (sp)->free_bitmap, s->session_index);
- }
return s;
}
always_inline session_t *
ho_session_get (u32 ho_index)
{
- return session_get (ho_index, 0 /* half-open thread */);
+ return session_get (ho_index, transport_cl_thread ());
}
always_inline void
always_inline session_worker_t *
session_main_get_worker (u32 thread_index)
{
- return &session_main.wrk[thread_index];
+ return vec_elt_at_index (session_main.wrk, thread_index);
}
static inline session_worker_t *
{
if (thread_index > vec_len (session_main.wrk))
return 0;
- return &session_main.wrk[thread_index];
+ return session_main_get_worker (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;
+ return session_main_get_worker (thread_index)->vpp_event_queue;
}
always_inline u8
return session_main.is_enabled == 1;
}
+always_inline void
+session_worker_stat_error_inc (session_worker_t *wrk, int error, int value)
+{
+ if ((-(error) >= 0 && -(error) < SESSION_N_ERRORS))
+ wrk->stats.errors[-error] += value;
+ else
+ SESSION_DBG ("unknown session counter");
+}
+
+always_inline void
+session_stat_error_inc (int error, int value)
+{
+ session_worker_t *wrk;
+ wrk = session_main_get_worker (vlib_get_thread_index ());
+ session_worker_stat_error_inc (wrk, error, value);
+}
+
#define session_cli_return_if_not_enabled() \
do { \
if (!session_main.is_enabled) \
fifo_segment_t *session_main_get_wrk_mqs_segment (void);
void session_node_enable_disable (u8 is_en);
clib_error_t *vnet_session_enable_disable (vlib_main_t * vm, u8 is_en);
-void session_wrk_handle_evts_main_rpc ();
+void session_wrk_handle_evts_main_rpc (void *);
session_t *session_alloc_for_connection (transport_connection_t * tc);
session_t *session_alloc_for_half_open (transport_connection_t *tc);
+void session_get_original_dst (transport_endpoint_t *i2o_src,
+ transport_endpoint_t *i2o_dst,
+ transport_proto_t transport_proto,
+ u32 *original_dst, u16 *original_dst_port);
typedef void (pool_safe_realloc_rpc_fn) (void *rpc_args);
{
max_elts = _vec_max_len (*pra->pool, pra->elt_size);
n_alloc = clib_max (2 * max_elts, POOL_REALLOC_SAFE_ELT_THRESH);
- _pool_alloc (pra->pool, free_elts + n_alloc, pra->align, 0,
- pra->elt_size);
+ _pool_alloc (pra->pool, n_alloc, pra->align, 0, pra->elt_size);
}
pool_realloc_flag (*pra->pool) = 0;
clib_mem_free (args);
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