*/
#include <vnet/session/session.h>
-#include <vnet/session/session_debug.h>
#include <vnet/session/application.h>
#include <vnet/dpo/load_balance.h>
#include <vnet/fib/ip4_fib.h>
+#include <vlib/stats/stats.h>
+#include <vlib/dma/dma.h>
-session_manager_main_t session_manager_main;
+session_main_t session_main;
static inline int
session_send_evt_to_thread (void *data, void *args, u32 thread_index,
session_evt_type_t evt_type)
{
+ session_worker_t *wrk = session_main_get_worker (thread_index);
session_event_t *evt;
svm_msg_q_msg_t msg;
svm_msg_q_t *mq;
- u32 tries = 0, max_tries;
- mq = session_manager_get_vpp_event_queue (thread_index);
- while (svm_msg_q_try_lock (mq))
- {
- max_tries = vlib_get_current_process (vlib_get_main ())? 1e6 : 3;
- if (tries++ == max_tries)
- {
- SESSION_DBG ("failed to enqueue evt");
- return -1;
- }
- }
- if (PREDICT_FALSE (svm_msg_q_ring_is_full (mq, SESSION_MQ_IO_EVT_RING)))
- {
- svm_msg_q_unlock (mq);
- return -2;
- }
- msg = svm_msg_q_alloc_msg_w_ring (mq, SESSION_MQ_IO_EVT_RING);
- if (PREDICT_FALSE (svm_msg_q_msg_is_invalid (&msg)))
+ mq = wrk->vpp_event_queue;
+ if (PREDICT_FALSE (svm_msg_q_lock (mq)))
+ return -1;
+ if (PREDICT_FALSE (svm_msg_q_or_ring_is_full (mq, SESSION_MQ_IO_EVT_RING)))
{
svm_msg_q_unlock (mq);
return -2;
}
- evt = (session_event_t *) svm_msg_q_msg_data (mq, &msg);
- evt->event_type = evt_type;
switch (evt_type)
{
- case FIFO_EVENT_RPC:
+ case SESSION_CTRL_EVT_RPC:
+ msg = svm_msg_q_alloc_msg_w_ring (mq, SESSION_MQ_IO_EVT_RING);
+ evt = (session_event_t *) svm_msg_q_msg_data (mq, &msg);
evt->rpc_args.fp = data;
evt->rpc_args.arg = args;
break;
- case FIFO_EVENT_APP_TX:
+ case SESSION_IO_EVT_RX:
+ case SESSION_IO_EVT_TX:
case SESSION_IO_EVT_TX_FLUSH:
- case FIFO_EVENT_BUILTIN_RX:
- evt->fifo = data;
+ case SESSION_IO_EVT_BUILTIN_RX:
+ msg = svm_msg_q_alloc_msg_w_ring (mq, SESSION_MQ_IO_EVT_RING);
+ evt = (session_event_t *) svm_msg_q_msg_data (mq, &msg);
+ evt->session_index = *(u32 *) data;
break;
- case FIFO_EVENT_BUILTIN_TX:
- case FIFO_EVENT_DISCONNECT:
+ case SESSION_IO_EVT_BUILTIN_TX:
+ case SESSION_CTRL_EVT_CLOSE:
+ case SESSION_CTRL_EVT_RESET:
+ msg = svm_msg_q_alloc_msg_w_ring (mq, SESSION_MQ_IO_EVT_RING);
+ evt = (session_event_t *) svm_msg_q_msg_data (mq, &msg);
evt->session_handle = session_handle ((session_t *) data);
break;
default:
svm_msg_q_unlock (mq);
return -1;
}
+ evt->event_type = evt_type;
svm_msg_q_add_and_unlock (mq, &msg);
+
+ if (PREDICT_FALSE (wrk->state == SESSION_WRK_INTERRUPT))
+ vlib_node_set_interrupt_pending (wrk->vm, session_queue_node.index);
+
return 0;
}
int
session_send_io_evt_to_thread (svm_fifo_t * f, session_evt_type_t evt_type)
{
- return session_send_evt_to_thread (f, 0, f->master_thread_index, evt_type);
+ return session_send_evt_to_thread (&f->shr->master_session_index, 0,
+ f->master_thread_index, evt_type);
}
int
int
session_send_ctrl_evt_to_thread (session_t * s, session_evt_type_t evt_type)
{
- /* only event supported for now is disconnect */
- ASSERT (evt_type == FIFO_EVENT_DISCONNECT);
- return session_send_evt_to_thread (s, 0, s->thread_index,
- FIFO_EVENT_DISCONNECT);
+ /* only events supported are disconnect, shutdown and reset */
+ ASSERT (evt_type == SESSION_CTRL_EVT_CLOSE ||
+ evt_type == SESSION_CTRL_EVT_HALF_CLOSE ||
+ evt_type == SESSION_CTRL_EVT_RESET);
+ return session_send_evt_to_thread (s, 0, s->thread_index, evt_type);
+}
+
+void
+session_send_rpc_evt_to_thread_force (u32 thread_index, void *fp,
+ void *rpc_args)
+{
+ session_send_evt_to_thread (fp, rpc_args, thread_index,
+ SESSION_CTRL_EVT_RPC);
}
void
session_send_rpc_evt_to_thread (u32 thread_index, void *fp, void *rpc_args)
{
if (thread_index != vlib_get_thread_index ())
- session_send_evt_to_thread (fp, rpc_args, thread_index, FIFO_EVENT_RPC);
+ session_send_rpc_evt_to_thread_force (thread_index, fp, rpc_args);
else
{
void (*fnp) (void *) = fp;
}
}
+void
+session_add_self_custom_tx_evt (transport_connection_t * tc, u8 has_prio)
+{
+ session_t *s = session_get (tc->s_index, tc->thread_index);
+
+ ASSERT (s->thread_index == vlib_get_thread_index ());
+ ASSERT (s->session_state != SESSION_STATE_TRANSPORT_DELETED);
+
+ if (!(s->flags & SESSION_F_CUSTOM_TX))
+ {
+ s->flags |= SESSION_F_CUSTOM_TX;
+ if (svm_fifo_set_event (s->tx_fifo)
+ || transport_connection_is_descheduled (tc))
+ {
+ session_evt_elt_t *elt;
+ session_worker_t *wrk;
+
+ wrk = session_main_get_worker (tc->thread_index);
+ if (has_prio)
+ elt = session_evt_alloc_new (wrk);
+ else
+ elt = session_evt_alloc_old (wrk);
+ elt->evt.session_index = tc->s_index;
+ elt->evt.event_type = SESSION_IO_EVT_TX;
+ tc->flags &= ~TRANSPORT_CONNECTION_F_DESCHED;
+
+ if (PREDICT_FALSE (wrk->state == SESSION_WRK_INTERRUPT))
+ vlib_node_set_interrupt_pending (wrk->vm,
+ session_queue_node.index);
+ }
+ }
+}
+
+void
+sesssion_reschedule_tx (transport_connection_t * tc)
+{
+ session_worker_t *wrk = session_main_get_worker (tc->thread_index);
+ session_evt_elt_t *elt;
+
+ ASSERT (tc->thread_index == vlib_get_thread_index ());
+
+ elt = session_evt_alloc_new (wrk);
+ elt->evt.session_index = tc->s_index;
+ elt->evt.event_type = SESSION_IO_EVT_TX;
+
+ if (PREDICT_FALSE (wrk->state == SESSION_WRK_INTERRUPT))
+ vlib_node_set_interrupt_pending (wrk->vm, session_queue_node.index);
+}
+
static void
-session_program_transport_close (session_t * s)
+session_program_transport_ctrl_evt (session_t * s, session_evt_type_t evt)
{
u32 thread_index = vlib_get_thread_index ();
- session_manager_worker_t *wrk;
- session_event_t *evt;
+ session_evt_elt_t *elt;
+ session_worker_t *wrk;
/* If we are in the handler thread, or being called with the worker barrier
* held, just append a new event to pending disconnects vector. */
if (vlib_thread_is_main_w_barrier () || thread_index == s->thread_index)
{
- wrk = session_manager_get_worker (s->thread_index);
- vec_add2 (wrk->pending_disconnects, evt, 1);
- clib_memset (evt, 0, sizeof (*evt));
- evt->session_handle = session_handle (s);
- evt->event_type = FIFO_EVENT_DISCONNECT;
+ wrk = session_main_get_worker (s->thread_index);
+ elt = session_evt_alloc_ctrl (wrk);
+ clib_memset (&elt->evt, 0, sizeof (session_event_t));
+ elt->evt.session_handle = session_handle (s);
+ elt->evt.event_type = evt;
+
+ if (PREDICT_FALSE (wrk->state == SESSION_WRK_INTERRUPT))
+ vlib_node_set_interrupt_pending (wrk->vm, session_queue_node.index);
}
else
- session_send_ctrl_evt_to_thread (s, FIFO_EVENT_DISCONNECT);
+ session_send_ctrl_evt_to_thread (s, evt);
}
session_t *
session_alloc (u32 thread_index)
{
- session_manager_worker_t *wrk = &session_manager_main.wrk[thread_index];
+ session_worker_t *wrk = &session_main.wrk[thread_index];
session_t *s;
- u8 will_expand = 0;
- pool_get_aligned_will_expand (wrk->sessions, will_expand,
- CLIB_CACHE_LINE_BYTES);
- /* If we have peekers, let them finish */
- if (PREDICT_FALSE (will_expand && vlib_num_workers ()))
- {
- clib_rwlock_writer_lock (&wrk->peekers_rw_locks);
- pool_get_aligned (wrk->sessions, s, CLIB_CACHE_LINE_BYTES);
- clib_rwlock_writer_unlock (&wrk->peekers_rw_locks);
- }
- else
- {
- pool_get_aligned (wrk->sessions, s, CLIB_CACHE_LINE_BYTES);
- }
+
+ pool_get_aligned_safe (wrk->sessions, s, CLIB_CACHE_LINE_BYTES);
clib_memset (s, 0, sizeof (*s));
s->session_index = s - wrk->sessions;
s->thread_index = thread_index;
+ s->app_index = APP_INVALID_INDEX;
+
return s;
}
void
session_free (session_t * s)
{
- pool_put (session_manager_main.wrk[s->thread_index].sessions, s);
+ session_worker_t *wrk = &session_main.wrk[s->thread_index];
+
+ SESSION_EVT (SESSION_EVT_FREE, s);
if (CLIB_DEBUG)
clib_memset (s, 0xFA, sizeof (*s));
+ pool_put (wrk->sessions, s);
+}
+
+u8
+session_is_valid (u32 si, u8 thread_index)
+{
+ session_t *s;
+ transport_connection_t *tc;
+
+ s = pool_elt_at_index (session_main.wrk[thread_index].sessions, si);
+
+ if (s->thread_index != thread_index || s->session_index != si)
+ return 0;
+
+ if (s->session_state == SESSION_STATE_TRANSPORT_DELETED
+ || s->session_state <= SESSION_STATE_LISTENING)
+ return 1;
+
+ if (s->session_state == SESSION_STATE_CONNECTING &&
+ (s->flags & SESSION_F_HALF_OPEN))
+ return 1;
+
+ tc = session_get_transport (s);
+ if (s->connection_index != tc->c_index
+ || s->thread_index != tc->thread_index || tc->s_index != si)
+ return 0;
+
+ return 1;
+}
+
+static void
+session_cleanup_notify (session_t * s, session_cleanup_ntf_t ntf)
+{
+ app_worker_t *app_wrk;
+
+ app_wrk = app_worker_get_if_valid (s->app_wrk_index);
+ if (!app_wrk)
+ return;
+ app_worker_cleanup_notify (app_wrk, s, ntf);
}
void
session_free_w_fifos (session_t * s)
{
- segment_manager_dealloc_fifos (s->svm_segment_index, s->rx_fifo,
- s->tx_fifo);
+ session_cleanup_notify (s, SESSION_CLEANUP_SESSION);
+ segment_manager_dealloc_fifos (s->rx_fifo, s->tx_fifo);
session_free (s);
}
/* Delete from the main lookup table. */
if ((rv = session_lookup_del_session (s)))
- clib_warning ("hash delete error, rv %d", rv);
+ clib_warning ("session %u hash delete rv %d", s->session_index, rv);
session_free_w_fifos (s);
}
-int
-session_alloc_fifos (segment_manager_t * sm, session_t * s)
+void
+session_cleanup_half_open (session_handle_t ho_handle)
{
- svm_fifo_t *server_rx_fifo = 0, *server_tx_fifo = 0;
- u32 fifo_segment_index;
- int rv;
+ session_t *ho = session_get_from_handle (ho_handle);
+
+ /* App transports can migrate their half-opens */
+ if (ho->flags & SESSION_F_IS_MIGRATING)
+ {
+ /* Session still migrating, move to closed state to signal that the
+ * session should be removed. */
+ if (ho->connection_index == ~0)
+ {
+ session_set_state (ho, SESSION_STATE_CLOSED);
+ return;
+ }
+ /* Migrated transports are no longer half-opens */
+ transport_cleanup (session_get_transport_proto (ho),
+ ho->connection_index, ho->app_index /* overloaded */);
+ }
+ else
+ transport_cleanup_half_open (session_get_transport_proto (ho),
+ ho->connection_index);
+ session_free (ho);
+}
+
+static void
+session_half_open_free (session_t *ho)
+{
+ app_worker_t *app_wrk;
+
+ ASSERT (vlib_get_thread_index () <= 1);
+ app_wrk = app_worker_get (ho->app_wrk_index);
+ app_worker_del_half_open (app_wrk, ho);
+ session_free (ho);
+}
+
+static void
+session_half_open_free_rpc (void *args)
+{
+ session_t *ho = ho_session_get (pointer_to_uword (args));
+ session_half_open_free (ho);
+}
+
+void
+session_half_open_delete_notify (transport_connection_t *tc)
+{
+ /* Notification from ctrl thread accepted without rpc */
+ if (tc->thread_index == transport_cl_thread ())
+ {
+ session_half_open_free (ho_session_get (tc->s_index));
+ }
+ else
+ {
+ void *args = uword_to_pointer ((uword) tc->s_index, void *);
+ session_send_rpc_evt_to_thread_force (transport_cl_thread (),
+ session_half_open_free_rpc, args);
+ }
+}
+
+void
+session_half_open_migrate_notify (transport_connection_t *tc)
+{
+ session_t *ho;
- if ((rv = segment_manager_alloc_session_fifos (sm, &server_rx_fifo,
- &server_tx_fifo,
- &fifo_segment_index)))
- return rv;
- /* Initialize backpointers */
- server_rx_fifo->master_session_index = s->session_index;
- server_rx_fifo->master_thread_index = s->thread_index;
+ ho = ho_session_get (tc->s_index);
+ ho->flags |= SESSION_F_IS_MIGRATING;
+ ho->connection_index = ~0;
+}
+
+int
+session_half_open_migrated_notify (transport_connection_t *tc)
+{
+ session_t *ho;
- server_tx_fifo->master_session_index = s->session_index;
- server_tx_fifo->master_thread_index = s->thread_index;
+ ho = ho_session_get (tc->s_index);
- s->rx_fifo = server_rx_fifo;
- s->tx_fifo = server_tx_fifo;
- s->svm_segment_index = fifo_segment_index;
+ /* App probably detached so the half-open must be cleaned up */
+ if (ho->session_state == SESSION_STATE_CLOSED)
+ {
+ session_half_open_delete_notify (tc);
+ return -1;
+ }
+ ho->connection_index = tc->c_index;
+ /* Overload app index for half-open with new thread */
+ ho->app_index = tc->thread_index;
return 0;
}
-static session_t *
+session_t *
session_alloc_for_connection (transport_connection_t * tc)
{
session_t *s;
s = session_alloc (thread_index);
s->session_type = session_type_from_proto_and_ip (tc->proto, tc->is_ip4);
- s->enqueue_epoch = (u64) ~ 0;
- s->session_state = SESSION_STATE_CLOSED;
+ session_set_state (s, SESSION_STATE_CLOSED);
/* Attach transport to session and vice versa */
s->connection_index = tc->c_index;
return s;
}
-static int
-session_alloc_and_init (segment_manager_t * sm, transport_connection_t * tc,
- u8 alloc_fifos, session_t ** ret_s)
+session_t *
+session_alloc_for_half_open (transport_connection_t *tc)
{
session_t *s;
- int rv;
-
- s = session_alloc_for_connection (tc);
- if (alloc_fifos && (rv = session_alloc_fifos (sm, s)))
- {
- session_free (s);
- *ret_s = 0;
- return rv;
- }
- /* Add to the main lookup table */
- session_lookup_add_connection (tc, session_handle (s));
-
- *ret_s = s;
- return 0;
+ s = ho_session_alloc ();
+ s->session_type = session_type_from_proto_and_ip (tc->proto, tc->is_ip4);
+ s->connection_index = tc->c_index;
+ tc->s_index = s->session_index;
+ return s;
}
/**
continue;
if (is_in_order)
{
- rv = svm_fifo_enqueue_nowait (s->rx_fifo, len, data);
+ rv = svm_fifo_enqueue (s->rx_fifo, len, data);
if (rv == len)
{
written += rv;
return 0;
}
+void
+session_fifo_tuning (session_t * s, svm_fifo_t * f,
+ session_ft_action_t act, u32 len)
+{
+ if (s->flags & SESSION_F_CUSTOM_FIFO_TUNING)
+ {
+ app_worker_t *app_wrk = app_worker_get (s->app_wrk_index);
+ app_worker_session_fifo_tuning (app_wrk, s, f, act, len);
+ if (CLIB_ASSERT_ENABLE)
+ {
+ segment_manager_t *sm;
+ sm = segment_manager_get (f->segment_manager);
+ ASSERT (f->shr->size >= 4096);
+ ASSERT (f->shr->size <= sm->max_fifo_size);
+ }
+ }
+}
+
/*
* Enqueue data for delivery to session peer. Does not notify peer of enqueue
* event but on request can queue notification events for later delivery by
if (is_in_order)
{
- enqueued = svm_fifo_enqueue_nowait (s->rx_fifo,
- b->current_length,
- vlib_buffer_get_current (b));
+ enqueued = svm_fifo_enqueue (s->rx_fifo,
+ b->current_length,
+ vlib_buffer_get_current (b));
if (PREDICT_FALSE ((b->flags & VLIB_BUFFER_NEXT_PRESENT)
&& enqueued >= 0))
{
{
/* Queue RX event on this fifo. Eventually these will need to be flushed
* by calling stream_server_flush_enqueue_events () */
- session_manager_worker_t *wrk;
+ session_worker_t *wrk;
- wrk = session_manager_get_worker (s->thread_index);
- if (s->enqueue_epoch != wrk->current_enqueue_epoch[tc->proto])
+ wrk = session_main_get_worker (s->thread_index);
+ if (!(s->flags & SESSION_F_RX_EVT))
{
- s->enqueue_epoch = wrk->current_enqueue_epoch[tc->proto];
+ s->flags |= SESSION_F_RX_EVT;
vec_add1 (wrk->session_to_enqueue[tc->proto], s->session_index);
}
+
+ session_fifo_tuning (s, s->rx_fifo, SESSION_FT_ACTION_ENQUEUED, 0);
}
return enqueued;
session_dgram_hdr_t * hdr,
vlib_buffer_t * b, u8 proto, u8 queue_event)
{
- int enqueued = 0, rv, in_order_off;
+ int rv;
- ASSERT (svm_fifo_max_enqueue (s->rx_fifo)
+ ASSERT (svm_fifo_max_enqueue_prod (s->rx_fifo)
>= b->current_length + sizeof (*hdr));
- svm_fifo_enqueue_nowait (s->rx_fifo, sizeof (session_dgram_hdr_t),
- (u8 *) hdr);
- enqueued = svm_fifo_enqueue_nowait (s->rx_fifo, b->current_length,
- vlib_buffer_get_current (b));
- if (PREDICT_FALSE ((b->flags & VLIB_BUFFER_NEXT_PRESENT) && enqueued >= 0))
+ if (PREDICT_TRUE (!(b->flags & VLIB_BUFFER_NEXT_PRESENT)))
{
- in_order_off = enqueued > b->current_length ? enqueued : 0;
- rv = session_enqueue_chain_tail (s, b, in_order_off, 1);
- if (rv > 0)
- enqueued += rv;
+ /* *INDENT-OFF* */
+ svm_fifo_seg_t segs[2] = {
+ { (u8 *) hdr, sizeof (*hdr) },
+ { vlib_buffer_get_current (b), b->current_length }
+ };
+ /* *INDENT-ON* */
+
+ rv = svm_fifo_enqueue_segments (s->rx_fifo, segs, 2,
+ 0 /* allow_partial */ );
}
- if (queue_event)
+ else
+ {
+ vlib_main_t *vm = vlib_get_main ();
+ svm_fifo_seg_t *segs = 0, *seg;
+ vlib_buffer_t *it = b;
+ u32 n_segs = 1;
+
+ vec_add2 (segs, seg, 1);
+ seg->data = (u8 *) hdr;
+ seg->len = sizeof (*hdr);
+ while (it)
+ {
+ vec_add2 (segs, seg, 1);
+ seg->data = vlib_buffer_get_current (it);
+ seg->len = it->current_length;
+ n_segs++;
+ if (!(it->flags & VLIB_BUFFER_NEXT_PRESENT))
+ break;
+ it = vlib_get_buffer (vm, it->next_buffer);
+ }
+ rv = svm_fifo_enqueue_segments (s->rx_fifo, segs, n_segs,
+ 0 /* allow partial */ );
+ vec_free (segs);
+ }
+
+ if (queue_event && rv > 0)
{
/* Queue RX event on this fifo. Eventually these will need to be flushed
* by calling stream_server_flush_enqueue_events () */
- session_manager_worker_t *wrk;
+ session_worker_t *wrk;
- wrk = session_manager_get_worker (s->thread_index);
- if (s->enqueue_epoch != wrk->current_enqueue_epoch[proto])
+ wrk = session_main_get_worker (s->thread_index);
+ if (!(s->flags & SESSION_F_RX_EVT))
{
- s->enqueue_epoch = wrk->current_enqueue_epoch[proto];
+ s->flags |= SESSION_F_RX_EVT;
vec_add1 (wrk->session_to_enqueue[proto], s->session_index);
}
- }
- return enqueued;
-}
-
-/** Check if we have space in rx fifo to push more bytes */
-u8
-stream_session_no_space (transport_connection_t * tc, u32 thread_index,
- u16 data_len)
-{
- session_t *s = session_get (tc->s_index, thread_index);
-
- if (PREDICT_FALSE (s->session_state != SESSION_STATE_READY))
- return 1;
-
- if (data_len > svm_fifo_max_enqueue (s->rx_fifo))
- return 1;
-
- return 0;
-}
-u32
-session_tx_fifo_max_dequeue (transport_connection_t * tc)
-{
- session_t *s = session_get (tc->s_index, tc->thread_index);
- if (!s->tx_fifo)
- return 0;
- return svm_fifo_max_dequeue (s->tx_fifo);
+ session_fifo_tuning (s, s->rx_fifo, SESSION_FT_ACTION_ENQUEUED, 0);
+ }
+ return rv > 0 ? rv : 0;
}
int
-stream_session_peek_bytes (transport_connection_t * tc, u8 * buffer,
- u32 offset, u32 max_bytes)
+session_tx_fifo_peek_bytes (transport_connection_t * tc, u8 * buffer,
+ u32 offset, u32 max_bytes)
{
session_t *s = session_get (tc->s_index, tc->thread_index);
return svm_fifo_peek (s->tx_fifo, offset, max_bytes, buffer);
}
u32
-stream_session_dequeue_drop (transport_connection_t * tc, u32 max_bytes)
+session_tx_fifo_dequeue_drop (transport_connection_t * tc, u32 max_bytes)
{
session_t *s = session_get (tc->s_index, tc->thread_index);
- return svm_fifo_dequeue_drop (s->tx_fifo, max_bytes);
+ u32 rv;
+
+ rv = svm_fifo_dequeue_drop (s->tx_fifo, max_bytes);
+ session_fifo_tuning (s, s->tx_fifo, SESSION_FT_ACTION_DEQUEUED, rv);
+
+ if (svm_fifo_needs_deq_ntf (s->tx_fifo, max_bytes))
+ session_dequeue_notify (s);
+
+ return rv;
}
static inline int
if (!app)
return -1;
- for (i = 0; i < f->n_subscribers; i++)
+ for (i = 0; i < f->shr->n_subscribers; i++)
{
- app_wrk = application_get_worker (app, f->subscribers[i]);
+ app_wrk = application_get_worker (app, f->shr->subscribers[i]);
if (!app_wrk)
continue;
if (app_worker_lock_and_send_event (app_wrk, s, evt_type))
* @return 0 on success or negative number if failed to send notification.
*/
static inline int
-session_enqueue_notify (session_t * s)
+session_enqueue_notify_inline (session_t * s)
{
app_worker_t *app_wrk;
+ u32 session_index;
+ u8 n_subscribers;
+
+ session_index = s->session_index;
+ n_subscribers = svm_fifo_n_subscribers (s->rx_fifo);
app_wrk = app_worker_get_if_valid (s->app_wrk_index);
if (PREDICT_FALSE (!app_wrk))
return 0;
}
- /* *INDENT-OFF* */
- SESSION_EVT_DBG(SESSION_EVT_ENQ, s, ({
- ed->data[0] = FIFO_EVENT_APP_RX;
- ed->data[1] = svm_fifo_max_dequeue (s->rx_fifo);
- }));
- /* *INDENT-ON* */
+ SESSION_EVT (SESSION_EVT_ENQ, s, svm_fifo_max_dequeue_prod (s->rx_fifo));
+
+ s->flags &= ~SESSION_F_RX_EVT;
+
+ /* Application didn't confirm accept yet */
+ if (PREDICT_FALSE (s->session_state == SESSION_STATE_ACCEPTING))
+ return 0;
if (PREDICT_FALSE (app_worker_lock_and_send_event (app_wrk, s,
- FIFO_EVENT_APP_RX)))
+ SESSION_IO_EVT_RX)))
return -1;
- if (PREDICT_FALSE (svm_fifo_n_subscribers (s->rx_fifo)))
- return session_notify_subscribers (app_wrk->app_index, s,
- s->rx_fifo, FIFO_EVENT_APP_RX);
+ if (PREDICT_FALSE (n_subscribers))
+ {
+ s = session_get (session_index, vlib_get_thread_index ());
+ return session_notify_subscribers (app_wrk->app_index, s,
+ s->rx_fifo, SESSION_IO_EVT_RX);
+ }
return 0;
}
+int
+session_enqueue_notify (session_t * s)
+{
+ return session_enqueue_notify_inline (s);
+}
+
+static void
+session_enqueue_notify_rpc (void *arg)
+{
+ u32 session_index = pointer_to_uword (arg);
+ session_t *s;
+
+ s = session_get_if_valid (session_index, vlib_get_thread_index ());
+ if (!s)
+ return;
+
+ session_enqueue_notify (s);
+}
+
+/**
+ * Like session_enqueue_notify, but can be called from a thread that does not
+ * own the session.
+ */
+void
+session_enqueue_notify_thread (session_handle_t sh)
+{
+ u32 thread_index = session_thread_from_handle (sh);
+ u32 session_index = session_index_from_handle (sh);
+
+ /*
+ * Pass session index (u32) as opposed to handle (u64) in case pointers
+ * are not 64-bit.
+ */
+ session_send_rpc_evt_to_thread (thread_index,
+ session_enqueue_notify_rpc,
+ uword_to_pointer (session_index, void *));
+}
+
int
session_dequeue_notify (session_t * s)
{
app_worker_t *app_wrk;
+ svm_fifo_clear_deq_ntf (s->tx_fifo);
+
app_wrk = app_worker_get_if_valid (s->app_wrk_index);
if (PREDICT_FALSE (!app_wrk))
return -1;
if (PREDICT_FALSE (app_worker_lock_and_send_event (app_wrk, s,
- FIFO_EVENT_APP_TX)))
+ SESSION_IO_EVT_TX)))
return -1;
- if (PREDICT_FALSE (s->tx_fifo->n_subscribers))
+ if (PREDICT_FALSE (s->tx_fifo->shr->n_subscribers))
return session_notify_subscribers (app_wrk->app_index, s,
- s->tx_fifo, FIFO_EVENT_APP_TX);
-
- svm_fifo_clear_tx_ntf (s->tx_fifo);
+ s->tx_fifo, SESSION_IO_EVT_TX);
return 0;
}
* failures due to API queue being full.
*/
int
-session_manager_flush_enqueue_events (u8 transport_proto, u32 thread_index)
+session_main_flush_enqueue_events (u8 transport_proto, u32 thread_index)
{
- session_manager_worker_t *wrk = session_manager_get_worker (thread_index);
+ session_worker_t *wrk = session_main_get_worker (thread_index);
session_t *s;
int i, errors = 0;
u32 *indices;
errors++;
continue;
}
- if (PREDICT_FALSE (session_enqueue_notify (s)))
+
+ session_fifo_tuning (s, s->rx_fifo, SESSION_FT_ACTION_ENQUEUED,
+ 0 /* TODO/not needed */ );
+
+ if (PREDICT_FALSE (session_enqueue_notify_inline (s)))
errors++;
}
vec_reset_length (indices);
wrk->session_to_enqueue[transport_proto] = indices;
- wrk->current_enqueue_epoch[transport_proto]++;
return errors;
}
int
-session_manager_flush_all_enqueue_events (u8 transport_proto)
+session_main_flush_all_enqueue_events (u8 transport_proto)
{
vlib_thread_main_t *vtm = vlib_get_thread_main ();
int i, errors = 0;
for (i = 0; i < 1 + vtm->n_threads; i++)
- errors += session_manager_flush_enqueue_events (transport_proto, i);
+ errors += session_main_flush_enqueue_events (transport_proto, i);
return errors;
}
-/**
- * Init fifo tail and head pointers
- *
- * Useful if transport uses absolute offsets for tracking ooo segments.
- */
-void
-stream_session_init_fifos_pointers (transport_connection_t * tc,
- u32 rx_pointer, u32 tx_pointer)
-{
- session_t *s;
- s = session_get (tc->s_index, tc->thread_index);
- svm_fifo_init_pointers (s->rx_fifo, rx_pointer);
- svm_fifo_init_pointers (s->tx_fifo, tx_pointer);
-}
-
int
-session_stream_connect_notify (transport_connection_t * tc, u8 is_fail)
+session_stream_connect_notify (transport_connection_t * tc,
+ session_error_t err)
{
u32 opaque = 0, new_ti, new_si;
- session_t *new_s = 0;
- segment_manager_t *sm;
app_worker_t *app_wrk;
- application_t *app;
- u8 alloc_fifos;
- int error = 0;
- u64 handle;
+ session_t *s = 0, *ho;
/*
- * Find connection handle and cleanup half-open table
+ * Cleanup half-open table
*/
- handle = session_lookup_half_open_handle (tc);
- if (handle == HALF_OPEN_LOOKUP_INVALID_VALUE)
- {
- SESSION_DBG ("half-open was removed!");
- return -1;
- }
session_lookup_del_half_open (tc);
- /* Get the app's index from the handle we stored when opening connection
- * and the opaque (api_context for external apps) from transport session
- * index */
- app_wrk = app_worker_get_if_valid (handle >> 32);
+ ho = ho_session_get (tc->s_index);
+ opaque = ho->opaque;
+ app_wrk = app_worker_get_if_valid (ho->app_wrk_index);
if (!app_wrk)
return -1;
- opaque = tc->s_index;
- app = application_get (app_wrk->app_index);
- /*
- * Allocate new session with fifos (svm segments are allocated if needed)
- */
- if (!is_fail)
- {
- sm = app_worker_get_connect_segment_manager (app_wrk);
- alloc_fifos = !application_is_builtin_proxy (app);
- if (session_alloc_and_init (sm, tc, alloc_fifos, &new_s))
- {
- is_fail = 1;
- error = -1;
- }
- else
- {
- new_s->session_state = SESSION_STATE_CONNECTING;
- new_s->app_wrk_index = app_wrk->wrk_index;
- new_si = new_s->session_index;
- new_ti = new_s->thread_index;
- }
- }
+ if (err)
+ return app_worker_connect_notify (app_wrk, s, err, opaque);
- /*
- * Notify client application
- */
- if (app->cb_fns.session_connected_callback (app_wrk->wrk_index, opaque,
- new_s, is_fail))
+ s = session_alloc_for_connection (tc);
+ session_set_state (s, SESSION_STATE_CONNECTING);
+ s->app_wrk_index = app_wrk->wrk_index;
+ new_si = s->session_index;
+ new_ti = s->thread_index;
+
+ if ((err = app_worker_init_connected (app_wrk, s)))
{
- SESSION_DBG ("failed to notify app");
- if (!is_fail)
- {
- new_s = session_get (new_si, new_ti);
- session_transport_close (new_s);
- }
+ session_free (s);
+ app_worker_connect_notify (app_wrk, 0, err, opaque);
+ return -1;
}
- else
+
+ s = session_get (new_si, new_ti);
+ session_set_state (s, SESSION_STATE_READY);
+ session_lookup_add_connection (tc, session_handle (s));
+
+ if (app_worker_connect_notify (app_wrk, s, SESSION_E_NONE, opaque))
{
- if (!is_fail)
- {
- new_s = session_get (new_si, new_ti);
- new_s->session_state = SESSION_STATE_READY;
- }
+ session_lookup_del_connection (tc);
+ /* Avoid notifying app about rejected session cleanup */
+ s = session_get (new_si, new_ti);
+ segment_manager_dealloc_fifos (s->rx_fifo, s->tx_fifo);
+ session_free (s);
+ return -1;
}
- return error;
+ return 0;
}
-typedef struct _session_switch_pool_args
+typedef union session_switch_pool_reply_args_
{
- u32 session_index;
- u32 thread_index;
- u32 new_thread_index;
- u32 new_session_index;
-} session_switch_pool_args_t;
+ struct
+ {
+ u32 session_index;
+ u16 thread_index;
+ u8 is_closed;
+ };
+ u64 as_u64;
+} session_switch_pool_reply_args_t;
+
+STATIC_ASSERT (sizeof (session_switch_pool_reply_args_t) <= sizeof (uword),
+ "switch pool reply args size");
static void
-session_switch_pool (void *cb_args)
+session_switch_pool_reply (void *arg)
{
- session_switch_pool_args_t *args = (session_switch_pool_args_t *) cb_args;
+ session_switch_pool_reply_args_t rargs;
session_t *s;
- ASSERT (args->thread_index == vlib_get_thread_index ());
+
+ rargs.as_u64 = pointer_to_uword (arg);
+ s = session_get_if_valid (rargs.session_index, rargs.thread_index);
+ if (!s)
+ return;
+
+ /* Session closed during migration. Clean everything up */
+ if (rargs.is_closed)
+ {
+ transport_cleanup (session_get_transport_proto (s), s->connection_index,
+ s->thread_index);
+ segment_manager_dealloc_fifos (s->rx_fifo, s->tx_fifo);
+ session_free (s);
+ return;
+ }
+
+ /* Notify app that it has data on the new session */
+ session_enqueue_notify (s);
+}
+
+typedef struct _session_switch_pool_args
+{
+ u32 session_index;
+ u32 thread_index;
+ u32 new_thread_index;
+ u32 new_session_index;
+} session_switch_pool_args_t;
+
+/**
+ * Notify old thread of the session pool switch
+ */
+static void
+session_switch_pool (void *cb_args)
+{
+ session_switch_pool_args_t *args = (session_switch_pool_args_t *) cb_args;
+ session_switch_pool_reply_args_t rargs;
+ session_handle_t new_sh;
+ segment_manager_t *sm;
+ app_worker_t *app_wrk;
+ session_t *s;
+
+ ASSERT (args->thread_index == vlib_get_thread_index ());
s = session_get (args->session_index, args->thread_index);
- s->tx_fifo->master_session_index = args->new_session_index;
- s->tx_fifo->master_thread_index = args->new_thread_index;
+
+ /* Check if session closed during migration */
+ rargs.is_closed = s->session_state >= SESSION_STATE_TRANSPORT_CLOSING;
+
transport_cleanup (session_get_transport_proto (s), s->connection_index,
s->thread_index);
+
+ app_wrk = app_worker_get_if_valid (s->app_wrk_index);
+ if (app_wrk)
+ {
+ /* Cleanup fifo segment slice state for fifos */
+ sm = app_worker_get_connect_segment_manager (app_wrk);
+ segment_manager_detach_fifo (sm, &s->rx_fifo);
+ segment_manager_detach_fifo (sm, &s->tx_fifo);
+
+ /* Notify app, using old session, about the migration event */
+ if (!rargs.is_closed)
+ {
+ new_sh = session_make_handle (args->new_session_index,
+ args->new_thread_index);
+ app_worker_migrate_notify (app_wrk, s, new_sh);
+ }
+ }
+
+ /* Trigger app read and fifo updates on the new thread */
+ rargs.session_index = args->new_session_index;
+ rargs.thread_index = args->new_thread_index;
+ session_send_rpc_evt_to_thread (args->new_thread_index,
+ session_switch_pool_reply,
+ uword_to_pointer (rargs.as_u64, void *));
+
session_free (s);
clib_mem_free (cb_args);
}
{
session_t *new_s;
session_switch_pool_args_t *rpc_args;
+ segment_manager_t *sm;
+ app_worker_t *app_wrk;
/*
* Clone half-open session to the right thread.
*/
new_s = session_clone_safe (tc->s_index, old_thread_index);
new_s->connection_index = tc->c_index;
- new_s->rx_fifo->master_session_index = new_s->session_index;
- new_s->rx_fifo->master_thread_index = new_s->thread_index;
- new_s->session_state = SESSION_STATE_READY;
- session_lookup_add_connection (tc, session_handle (new_s));
+ session_set_state (new_s, SESSION_STATE_READY);
+ new_s->flags |= SESSION_F_IS_MIGRATING;
+
+ if (!(tc->flags & TRANSPORT_CONNECTION_F_NO_LOOKUP))
+ session_lookup_add_connection (tc, session_handle (new_s));
+
+ app_wrk = app_worker_get_if_valid (new_s->app_wrk_index);
+ if (app_wrk)
+ {
+ /* New set of fifos attached to the same shared memory */
+ sm = app_worker_get_connect_segment_manager (app_wrk);
+ segment_manager_attach_fifo (sm, &new_s->rx_fifo, new_s);
+ segment_manager_attach_fifo (sm, &new_s->tx_fifo, new_s);
+ }
/*
* Ask thread owning the old session to clean it up and make us the tx
return 0;
}
-int
-stream_session_accept_notify (transport_connection_t * tc)
-{
- app_worker_t *app_wrk;
- application_t *app;
- session_t *s;
-
- s = session_get (tc->s_index, tc->thread_index);
- app_wrk = app_worker_get_if_valid (s->app_wrk_index);
- if (!app_wrk)
- return -1;
- s->session_state = SESSION_STATE_ACCEPTING;
- app = application_get (app_wrk->app_index);
- return app->cb_fns.session_accept_callback (s);
-}
-
/**
* Notification from transport that connection is being closed.
*
session_transport_closing_notify (transport_connection_t * tc)
{
app_worker_t *app_wrk;
- application_t *app;
session_t *s;
s = session_get (tc->s_index, tc->thread_index);
if (s->session_state >= SESSION_STATE_TRANSPORT_CLOSING)
return;
- s->session_state = SESSION_STATE_TRANSPORT_CLOSING;
- app_wrk = app_worker_get_if_valid (s->app_wrk_index);
- if (!app_wrk)
- return;
- app = application_get (app_wrk->app_index);
- app->cb_fns.session_disconnect_callback (s);
+
+ /* Wait for reply from app before sending notification as the
+ * accept might be rejected */
+ if (s->session_state == SESSION_STATE_ACCEPTING)
+ {
+ session_set_state (s, SESSION_STATE_TRANSPORT_CLOSING);
+ return;
+ }
+
+ session_set_state (s, SESSION_STATE_TRANSPORT_CLOSING);
+ app_wrk = app_worker_get (s->app_wrk_index);
+ app_worker_close_notify (app_wrk, s);
}
/**
if (!(s = session_get_if_valid (tc->s_index, tc->thread_index)))
return;
- /* Make sure we don't try to send anything more */
- svm_fifo_dequeue_drop_all (s->tx_fifo);
-
switch (s->session_state)
{
+ case SESSION_STATE_CREATED:
+ /* Session was created but accept notification was not yet sent to the
+ * app. Cleanup everything. */
+ session_lookup_del_session (s);
+ segment_manager_dealloc_fifos (s->rx_fifo, s->tx_fifo);
+ session_free (s);
+ break;
case SESSION_STATE_ACCEPTING:
case SESSION_STATE_TRANSPORT_CLOSING:
+ case SESSION_STATE_CLOSING:
+ case SESSION_STATE_TRANSPORT_CLOSED:
/* If transport finishes or times out before we get a reply
* from the app, mark transport as closed and wait for reply
* before removing the session. Cleanup session table in advance
* because transport will soon be closed and closed sessions
* are assumed to have been removed from the lookup table */
session_lookup_del_session (s);
- s->session_state = SESSION_STATE_TRANSPORT_CLOSED;
+ session_set_state (s, SESSION_STATE_TRANSPORT_DELETED);
+ session_cleanup_notify (s, SESSION_CLEANUP_TRANSPORT);
+ svm_fifo_dequeue_drop_all (s->tx_fifo);
break;
- case SESSION_STATE_CLOSING:
- case SESSION_STATE_CLOSED_WAITING:
+ case SESSION_STATE_APP_CLOSED:
/* Cleanup lookup table as transport needs to still be valid.
* Program transport close to ensure that all session events
* have been cleaned up. Once transport close is called, the
* session is just removed because both transport and app have
* confirmed the close*/
session_lookup_del_session (s);
- s->session_state = SESSION_STATE_TRANSPORT_CLOSED;
- session_program_transport_close (s);
+ session_set_state (s, SESSION_STATE_TRANSPORT_DELETED);
+ session_cleanup_notify (s, SESSION_CLEANUP_TRANSPORT);
+ svm_fifo_dequeue_drop_all (s->tx_fifo);
+ session_program_transport_ctrl_evt (s, SESSION_CTRL_EVT_CLOSE);
break;
- case SESSION_STATE_TRANSPORT_CLOSED:
+ case SESSION_STATE_TRANSPORT_DELETED:
break;
case SESSION_STATE_CLOSED:
+ session_cleanup_notify (s, SESSION_CLEANUP_TRANSPORT);
session_delete (s);
break;
default:
clib_warning ("session state %u", s->session_state);
+ session_cleanup_notify (s, SESSION_CLEANUP_TRANSPORT);
session_delete (s);
break;
}
}
/**
- * Notification from transport that session can be closed
+ * Notification from transport that it is closed
*
- * Should be called by transport only if it was closed with non-empty
- * tx fifo and once it decides to begin the closing procedure prior to
- * issuing a delete notify. This gives the chance to the session layer
- * to cleanup any outstanding events.
+ * Should be called by transport, prior to calling delete notify, once it
+ * knows that no more data will be exchanged. This could serve as an
+ * early acknowledgment of an active close especially if transport delete
+ * can be delayed a long time, e.g., tcp time-wait.
*/
void
session_transport_closed_notify (transport_connection_t * tc)
{
+ app_worker_t *app_wrk;
session_t *s;
if (!(s = session_get_if_valid (tc->s_index, tc->thread_index)))
return;
- /* If app close has not been received or has not yet resulted in
- * a transport close, only mark the session transport as closed */
- if (s->session_state <= SESSION_STATE_CLOSING)
+ /* Transport thinks that app requested close but it actually didn't.
+ * Can happen for tcp:
+ * 1)if fin and rst are received in close succession.
+ * 2)if app shutdown the connection. */
+ if (s->session_state == SESSION_STATE_READY)
{
- session_lookup_del_session (s);
- s->session_state = SESSION_STATE_TRANSPORT_CLOSED;
+ session_transport_closing_notify (tc);
+ svm_fifo_dequeue_drop_all (s->tx_fifo);
+ session_set_state (s, SESSION_STATE_TRANSPORT_CLOSED);
}
- else
- s->session_state = SESSION_STATE_CLOSED;
+ /* If app close has not been received or has not yet resulted in
+ * a transport close, only mark the session transport as closed */
+ else if (s->session_state <= SESSION_STATE_CLOSING)
+ session_set_state (s, SESSION_STATE_TRANSPORT_CLOSED);
+ /* If app also closed, switch to closed */
+ else if (s->session_state == SESSION_STATE_APP_CLOSED)
+ session_set_state (s, SESSION_STATE_CLOSED);
+
+ app_wrk = app_worker_get_if_valid (s->app_wrk_index);
+ if (app_wrk)
+ app_worker_transport_closed_notify (app_wrk, s);
}
/**
void
session_transport_reset_notify (transport_connection_t * tc)
{
- session_t *s;
app_worker_t *app_wrk;
- application_t *app;
+ session_t *s;
+
s = session_get (tc->s_index, tc->thread_index);
svm_fifo_dequeue_drop_all (s->tx_fifo);
if (s->session_state >= SESSION_STATE_TRANSPORT_CLOSING)
return;
- s->session_state = SESSION_STATE_TRANSPORT_CLOSING;
+ if (s->session_state == SESSION_STATE_ACCEPTING)
+ {
+ session_set_state (s, SESSION_STATE_TRANSPORT_CLOSING);
+ return;
+ }
+ session_set_state (s, SESSION_STATE_TRANSPORT_CLOSING);
app_wrk = app_worker_get (s->app_wrk_index);
- app = application_get (app_wrk->app_index);
- app->cb_fns.session_reset_callback (s);
+ app_worker_reset_notify (app_wrk, s);
+}
+
+int
+session_stream_accept_notify (transport_connection_t * tc)
+{
+ app_worker_t *app_wrk;
+ session_t *s;
+
+ s = session_get (tc->s_index, tc->thread_index);
+ app_wrk = app_worker_get_if_valid (s->app_wrk_index);
+ if (!app_wrk)
+ return -1;
+ if (s->session_state != SESSION_STATE_CREATED)
+ return 0;
+ session_set_state (s, SESSION_STATE_ACCEPTING);
+ if (app_worker_accept_notify (app_wrk, s))
+ {
+ /* On transport delete, no notifications should be sent. Unless, the
+ * accept is retried and successful. */
+ session_set_state (s, SESSION_STATE_CREATED);
+ return -1;
+ }
+ return 0;
}
/**
*/
int
session_stream_accept (transport_connection_t * tc, u32 listener_index,
- u8 notify)
+ u32 thread_index, u8 notify)
{
- session_t *s, *listener;
- app_worker_t *app_wrk;
- segment_manager_t *sm;
+ session_t *s;
int rv;
- /* Find the server */
- listener = listen_session_get (listener_index);
- app_wrk = application_listener_select_worker (listener);
+ s = session_alloc_for_connection (tc);
+ s->listener_handle = ((u64) thread_index << 32) | (u64) listener_index;
+ session_set_state (s, SESSION_STATE_CREATED);
- sm = app_worker_get_listen_segment_manager (app_wrk, listener);
- if ((rv = session_alloc_and_init (sm, tc, 1, &s)))
- return rv;
+ if ((rv = app_worker_init_accepted (s)))
+ {
+ session_free (s);
+ return rv;
+ }
- s->app_wrk_index = app_wrk->wrk_index;
- s->listener_index = listener_index;
+ session_lookup_add_connection (tc, session_handle (s));
/* Shoulder-tap the server */
if (notify)
{
- application_t *app = application_get (app_wrk->app_index);
- return app->cb_fns.session_accept_callback (s);
+ app_worker_t *app_wrk = app_worker_get (s->app_wrk_index);
+ if ((rv = app_worker_accept_notify (app_wrk, s)))
+ {
+ session_lookup_del_session (s);
+ segment_manager_dealloc_fifos (s->rx_fifo, s->tx_fifo);
+ session_free (s);
+ return rv;
+ }
+ }
+
+ return 0;
+}
+
+int
+session_dgram_accept (transport_connection_t * tc, u32 listener_index,
+ u32 thread_index)
+{
+ app_worker_t *app_wrk;
+ session_t *s;
+ int rv;
+
+ s = session_alloc_for_connection (tc);
+ s->listener_handle = ((u64) thread_index << 32) | (u64) listener_index;
+
+ if ((rv = app_worker_init_accepted (s)))
+ {
+ session_free (s);
+ return rv;
+ }
+
+ session_lookup_add_connection (tc, session_handle (s));
+ session_set_state (s, SESSION_STATE_ACCEPTING);
+
+ app_wrk = app_worker_get (s->app_wrk_index);
+ if ((rv = app_worker_accept_notify (app_wrk, s)))
+ {
+ session_lookup_del_session (s);
+ segment_manager_dealloc_fifos (s->rx_fifo, s->tx_fifo);
+ session_free (s);
+ return rv;
}
return 0;
}
int
-session_open_cl (u32 app_wrk_index, session_endpoint_t * rmt, u32 opaque)
+session_open_cl (session_endpoint_cfg_t *rmt, session_handle_t *rsh)
{
transport_connection_t *tc;
transport_endpoint_cfg_t *tep;
- segment_manager_t *sm;
app_worker_t *app_wrk;
+ session_handle_t sh;
session_t *s;
- application_t *app;
int rv;
tep = session_endpoint_to_transport_cfg (rmt);
if (rv < 0)
{
SESSION_DBG ("Transport failed to open connection.");
- return VNET_API_ERROR_SESSION_CONNECT;
+ return rv;
}
tc = transport_get_half_open (rmt->transport_proto, (u32) rv);
- /* For dgram type of service, allocate session and fifos now.
- */
- app_wrk = app_worker_get (app_wrk_index);
- sm = app_worker_get_connect_segment_manager (app_wrk);
-
- if (session_alloc_and_init (sm, tc, 1, &s))
- return -1;
+ /* For dgram type of service, allocate session and fifos now */
+ app_wrk = app_worker_get (rmt->app_wrk_index);
+ s = session_alloc_for_connection (tc);
s->app_wrk_index = app_wrk->wrk_index;
- s->session_state = SESSION_STATE_OPENED;
+ session_set_state (s, SESSION_STATE_OPENED);
+ if (app_worker_init_connected (app_wrk, s))
+ {
+ session_free (s);
+ return -1;
+ }
- /* Tell the app about the new event fifo for this session */
- app = application_get (app_wrk->app_index);
- app->cb_fns.session_connected_callback (app_wrk->wrk_index, opaque, s, 0);
+ sh = session_handle (s);
+ *rsh = sh;
- return 0;
+ session_lookup_add_connection (tc, sh);
+ return app_worker_connect_notify (app_wrk, s, SESSION_E_NONE, rmt->opaque);
}
int
-session_open_vc (u32 app_wrk_index, session_endpoint_t * rmt, u32 opaque)
+session_open_vc (session_endpoint_cfg_t *rmt, session_handle_t *rsh)
{
transport_connection_t *tc;
transport_endpoint_cfg_t *tep;
- u64 handle;
+ app_worker_t *app_wrk;
+ session_t *ho;
int rv;
tep = session_endpoint_to_transport_cfg (rmt);
if (rv < 0)
{
SESSION_DBG ("Transport failed to open connection.");
- return VNET_API_ERROR_SESSION_CONNECT;
+ return rv;
}
tc = transport_get_half_open (rmt->transport_proto, (u32) rv);
- /* If transport offers a stream service, only allocate session once the
- * connection has been established.
- * Add connection to half-open table and save app and tc index. The
- * latter is needed to help establish the connection while the former
- * is needed when the connect notify comes and we have to notify the
- * external app
- */
- handle = (((u64) app_wrk_index) << 32) | (u64) tc->c_index;
- session_lookup_add_half_open (tc, handle);
+ app_wrk = app_worker_get (rmt->app_wrk_index);
- /* Store api_context (opaque) for when the reply comes. Not the nicest
- * thing but better than allocating a separate half-open pool.
+ /* If transport offers a vc service, only allocate established
+ * session once the connection has been established.
+ * In the meantime allocate half-open session for tracking purposes
+ * associate half-open connection to it and add session to app-worker
+ * half-open table. These are needed to allocate the established
+ * session on transport notification, and to cleanup the half-open
+ * session if the app detaches before connection establishment.
*/
- tc->s_index = opaque;
+ ho = session_alloc_for_half_open (tc);
+ ho->app_wrk_index = app_wrk->wrk_index;
+ ho->ho_index = app_worker_add_half_open (app_wrk, session_handle (ho));
+ ho->opaque = rmt->opaque;
+ *rsh = session_handle (ho);
+
+ if (!(tc->flags & TRANSPORT_CONNECTION_F_NO_LOOKUP))
+ session_lookup_add_half_open (tc, tc->c_index);
+
return 0;
}
int
-session_open_app (u32 app_wrk_index, session_endpoint_t * rmt, u32 opaque)
+session_open_app (session_endpoint_cfg_t *rmt, session_handle_t *rsh)
{
- session_endpoint_cfg_t *sep = (session_endpoint_cfg_t *) rmt;
- transport_endpoint_cfg_t *tep_cfg = session_endpoint_to_transport_cfg (sep);
-
- sep->app_wrk_index = app_wrk_index;
- sep->opaque = opaque;
+ transport_endpoint_cfg_t *tep_cfg = session_endpoint_to_transport_cfg (rmt);
+ /* Not supported for now */
+ *rsh = SESSION_INVALID_HANDLE;
return transport_connect (rmt->transport_proto, tep_cfg);
}
-typedef int (*session_open_service_fn) (u32, session_endpoint_t *, u32);
+typedef int (*session_open_service_fn) (session_endpoint_cfg_t *,
+ session_handle_t *);
/* *INDENT-OFF* */
static session_open_service_fn session_open_srv_fns[TRANSPORT_N_SERVICES] = {
* on open completion.
*/
int
-session_open (u32 app_wrk_index, session_endpoint_t * rmt, u32 opaque)
+session_open (session_endpoint_cfg_t *rmt, session_handle_t *rsh)
{
transport_service_type_t tst;
tst = transport_protocol_service_type (rmt->transport_proto);
- return session_open_srv_fns[tst] (app_wrk_index, rmt, opaque);
+ return session_open_srv_fns[tst](rmt, rsh);
}
/**
int
session_listen (session_t * ls, session_endpoint_cfg_t * sep)
{
- transport_connection_t *tc;
- transport_endpoint_t *tep;
- u32 tc_index, s_index;
+ transport_endpoint_cfg_t *tep;
+ int tc_index;
+ u32 s_index;
/* Transport bind/listen */
- tep = session_endpoint_to_transport (sep);
+ tep = session_endpoint_to_transport_cfg (sep);
s_index = ls->session_index;
- tc_index = transport_start_listen (sep->transport_proto, s_index, tep);
+ tc_index = transport_start_listen (session_get_transport_proto (ls),
+ s_index, tep);
- if (tc_index == (u32) ~ 0)
- return -1;
+ if (tc_index < 0)
+ return tc_index;
- /* Attach transport to session */
+ /* Attach transport to session. Lookup tables are populated by the app
+ * worker because local tables (for ct sessions) are not backed by a fib */
ls = listen_session_get (s_index);
ls->connection_index = tc_index;
+ ls->opaque = sep->opaque;
- /* Add to the main lookup table after transport was initialized */
- tc = transport_get_listener (sep->transport_proto, tc_index);
- session_lookup_add_connection (tc, listen_session_get_handle (ls));
return 0;
}
transport_connection_t *tc;
if (s->session_state != SESSION_STATE_LISTENING)
- return -1;
+ return SESSION_E_NOLISTEN;
tc = transport_get_listener (tp, s->connection_index);
+
+ /* If no transport, assume everything was cleaned up already */
if (!tc)
- return VNET_API_ERROR_ADDRESS_NOT_IN_USE;
+ return SESSION_E_NONE;
+
+ if (!(tc->flags & TRANSPORT_CONNECTION_F_NO_LOOKUP))
+ session_lookup_del_connection (tc);
- session_lookup_del_connection (tc);
transport_stop_listen (tp, s->connection_index);
return 0;
}
+/**
+ * Initialize session half-closing procedure.
+ *
+ * Note that half-closing will not change the state of the session.
+ */
+void
+session_half_close (session_t *s)
+{
+ if (!s)
+ return;
+
+ session_program_transport_ctrl_evt (s, SESSION_CTRL_EVT_HALF_CLOSE);
+}
+
/**
* Initialize session closing procedure.
*
{
/* Session will only be removed once both app and transport
* acknowledge the close */
- if (s->session_state == SESSION_STATE_TRANSPORT_CLOSED)
- session_program_transport_close (s);
+ if (s->session_state == SESSION_STATE_TRANSPORT_CLOSED
+ || s->session_state == SESSION_STATE_TRANSPORT_DELETED)
+ session_program_transport_ctrl_evt (s, SESSION_CTRL_EVT_CLOSE);
+ return;
+ }
- /* Session already closed. Clear the tx fifo */
- if (s->session_state == SESSION_STATE_CLOSED)
- svm_fifo_dequeue_drop_all (s->tx_fifo);
+ /* App closed so stop propagating dequeue notifications.
+ * App might disconnect session before connected, in this case,
+ * tx_fifo may not be setup yet, so clear only it's inited. */
+ if (s->tx_fifo)
+ svm_fifo_clear_deq_ntf (s->tx_fifo);
+ session_set_state (s, SESSION_STATE_CLOSING);
+ session_program_transport_ctrl_evt (s, SESSION_CTRL_EVT_CLOSE);
+}
+
+/**
+ * Force a close without waiting for data to be flushed
+ */
+void
+session_reset (session_t * s)
+{
+ if (s->session_state >= SESSION_STATE_CLOSING)
+ return;
+ /* Drop all outstanding tx data
+ * App might disconnect session before connected, in this case,
+ * tx_fifo may not be setup yet, so clear only it's inited. */
+ if (s->tx_fifo)
+ svm_fifo_dequeue_drop_all (s->tx_fifo);
+ session_set_state (s, SESSION_STATE_CLOSING);
+ session_program_transport_ctrl_evt (s, SESSION_CTRL_EVT_RESET);
+}
+
+/**
+ * Notify transport the session can be half-disconnected.
+ *
+ * Must be called from the session's thread.
+ */
+void
+session_transport_half_close (session_t *s)
+{
+ /* Only READY session can be half-closed */
+ if (s->session_state != SESSION_STATE_READY)
+ {
return;
}
- s->session_state = SESSION_STATE_CLOSING;
- session_program_transport_close (s);
+ transport_half_close (session_get_transport_proto (s), s->connection_index,
+ s->thread_index);
}
/**
void
session_transport_close (session_t * s)
{
- /* If transport is already closed, just free the session */
- if (s->session_state >= SESSION_STATE_TRANSPORT_CLOSED)
+ if (s->session_state >= SESSION_STATE_APP_CLOSED)
{
- session_free_w_fifos (s);
+ if (s->session_state == SESSION_STATE_TRANSPORT_CLOSED)
+ session_set_state (s, SESSION_STATE_CLOSED);
+ /* If transport is already deleted, just free the session */
+ else if (s->session_state >= SESSION_STATE_TRANSPORT_DELETED)
+ session_free_w_fifos (s);
return;
}
- /* If tx queue wasn't drained, change state to closed waiting for transport.
- * This way, the transport, if it so wishes, can continue to try sending the
- * outstanding data (in closed state it cannot). It MUST however at one
- * point, either after sending everything or after a timeout, call delete
- * notify. This will finally lead to the complete cleanup of the session.
+ /* If the tx queue wasn't drained, the transport can continue to try
+ * sending the outstanding data (in closed state it cannot). It MUST however
+ * at one point, either after sending everything or after a timeout, call
+ * delete notify. This will finally lead to the complete cleanup of the
+ * session.
*/
- if (svm_fifo_max_dequeue (s->tx_fifo))
- s->session_state = SESSION_STATE_CLOSED_WAITING;
- else
- s->session_state = SESSION_STATE_CLOSED;
+ session_set_state (s, SESSION_STATE_APP_CLOSED);
transport_close (session_get_transport_proto (s), s->connection_index,
s->thread_index);
}
+/**
+ * Force transport close
+ */
+void
+session_transport_reset (session_t * s)
+{
+ if (s->session_state >= SESSION_STATE_APP_CLOSED)
+ {
+ if (s->session_state == SESSION_STATE_TRANSPORT_CLOSED)
+ session_set_state (s, SESSION_STATE_CLOSED);
+ else if (s->session_state >= SESSION_STATE_TRANSPORT_DELETED)
+ session_free_w_fifos (s);
+ return;
+ }
+
+ session_set_state (s, SESSION_STATE_APP_CLOSED);
+ transport_reset (session_get_transport_proto (s), s->connection_index,
+ s->thread_index);
+}
+
/**
* Cleanup transport and session state.
*
void
session_transport_cleanup (session_t * s)
{
- s->session_state = SESSION_STATE_CLOSED;
-
/* Delete from main lookup table before we axe the the transport */
session_lookup_del_session (s);
- transport_cleanup (session_get_transport_proto (s), s->connection_index,
- s->thread_index);
+ if (s->session_state != SESSION_STATE_TRANSPORT_DELETED)
+ transport_cleanup (session_get_transport_proto (s), s->connection_index,
+ s->thread_index);
/* Since we called cleanup, no delete notification will come. So, make
* sure the session is properly freed. */
- session_free_w_fifos (s);
+ segment_manager_dealloc_fifos (s->rx_fifo, s->tx_fifo);
+ session_free (s);
}
/**
- * Allocate event queues in the shared-memory segment
+ * Allocate worker mqs in share-able segment
*
- * That can either be a newly created memfd segment, that will need to be
- * mapped by all stack users, or the binary api's svm region. The latter is
- * assumed to be already mapped. NOTE that this assumption DOES NOT hold if
- * api clients bootstrap shm api over sockets (i.e. use memfd segments) and
- * vpp uses api svm region for event queues.
+ * That can only be a newly created memfd segment, that must be mapped
+ * by all apps/stack users unless private rx mqs are enabled.
*/
void
-session_vpp_event_queues_allocate (session_manager_main_t * smm)
-{
- u32 evt_q_length = 2048, evt_size = sizeof (session_event_t);
- ssvm_private_t *eqs = &smm->evt_qs_segment;
- api_main_t *am = &api_main;
- u64 eqs_size = 64 << 20;
- pid_t vpp_pid = getpid ();
- void *oldheap;
+session_vpp_wrk_mqs_alloc (session_main_t *smm)
+{
+ u32 mq_q_length = 2048, evt_size = sizeof (session_event_t);
+ fifo_segment_t *mqs_seg = &smm->wrk_mqs_segment;
+ svm_msg_q_cfg_t _cfg, *cfg = &_cfg;
+ uword mqs_seg_size;
int i;
- if (smm->configured_event_queue_length)
- evt_q_length = smm->configured_event_queue_length;
+ mq_q_length = clib_max (mq_q_length, smm->configured_wrk_mq_length);
- if (smm->evt_qs_use_memfd_seg)
- {
- if (smm->evt_qs_segment_size)
- eqs_size = smm->evt_qs_segment_size;
+ svm_msg_q_ring_cfg_t rc[SESSION_MQ_N_RINGS] = {
+ { mq_q_length, evt_size, 0 }, { mq_q_length >> 1, 256, 0 }
+ };
+ cfg->consumer_pid = 0;
+ cfg->n_rings = 2;
+ cfg->q_nitems = mq_q_length;
+ cfg->ring_cfgs = rc;
- eqs->ssvm_size = eqs_size;
- eqs->i_am_master = 1;
- eqs->my_pid = vpp_pid;
- eqs->name = format (0, "%s%c", "evt-qs-segment", 0);
- eqs->requested_va = smm->session_baseva;
+ /*
+ * Compute mqs segment size based on rings config and leave space
+ * for passing extended configuration messages, i.e., data allocated
+ * outside of the rings. If provided with a config value, accept it
+ * if larger than minimum size.
+ */
+ mqs_seg_size = svm_msg_q_size_to_alloc (cfg) * vec_len (smm->wrk);
+ mqs_seg_size = mqs_seg_size + (1 << 20);
+ mqs_seg_size = clib_max (mqs_seg_size, smm->wrk_mqs_segment_size);
- if (ssvm_master_init (eqs, SSVM_SEGMENT_MEMFD))
- {
- clib_warning ("failed to initialize queue segment");
- return;
- }
+ mqs_seg->ssvm.ssvm_size = mqs_seg_size;
+ mqs_seg->ssvm.my_pid = getpid ();
+ mqs_seg->ssvm.name = format (0, "%s%c", "session: wrk-mqs-segment", 0);
+
+ if (ssvm_server_init (&mqs_seg->ssvm, SSVM_SEGMENT_MEMFD))
+ {
+ clib_warning ("failed to initialize queue segment");
+ return;
}
- if (smm->evt_qs_use_memfd_seg)
- oldheap = ssvm_push_heap (eqs->sh);
- else
- oldheap = svm_push_data_heap (am->vlib_rp);
+ fifo_segment_init (mqs_seg);
+
+ /* Special fifo segment that's filled only with mqs */
+ mqs_seg->h->n_mqs = vec_len (smm->wrk);
for (i = 0; i < vec_len (smm->wrk); i++)
- {
- svm_msg_q_cfg_t _cfg, *cfg = &_cfg;
- svm_msg_q_ring_cfg_t rc[SESSION_MQ_N_RINGS] = {
- {evt_q_length, evt_size, 0}
- ,
- {evt_q_length << 1, 256, 0}
- };
- cfg->consumer_pid = 0;
- cfg->n_rings = 2;
- cfg->q_nitems = evt_q_length;
- cfg->ring_cfgs = rc;
- smm->wrk[i].vpp_event_queue = svm_msg_q_alloc (cfg);
- if (smm->evt_qs_use_memfd_seg)
- {
- if (svm_msg_q_alloc_consumer_eventfd (smm->wrk[i].vpp_event_queue))
- clib_warning ("eventfd returned");
- }
- }
+ smm->wrk[i].vpp_event_queue = fifo_segment_msg_q_alloc (mqs_seg, i, cfg);
+}
- if (smm->evt_qs_use_memfd_seg)
- ssvm_pop_heap (oldheap);
- else
- svm_pop_heap (oldheap);
+fifo_segment_t *
+session_main_get_wrk_mqs_segment (void)
+{
+ return &session_main.wrk_mqs_segment;
}
-ssvm_private_t *
-session_manager_get_evt_q_segment (void)
+u64
+session_segment_handle (session_t * s)
{
- session_manager_main_t *smm = &session_manager_main;
- if (smm->evt_qs_use_memfd_seg)
- return &smm->evt_qs_segment;
- return 0;
+ svm_fifo_t *f;
+
+ if (!s->rx_fifo)
+ return SESSION_INVALID_HANDLE;
+
+ f = s->rx_fifo;
+ return segment_manager_make_segment_handle (f->segment_manager,
+ f->segment_index);
}
/* *INDENT-OFF* */
};
/* *INDENT-ON* */
-/**
- * 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.
- */
void
session_register_transport (transport_proto_t transport_proto,
const transport_proto_vft_t * vft, u8 is_ip4,
u32 output_node)
{
- session_manager_main_t *smm = &session_manager_main;
+ session_main_t *smm = &session_main;
session_type_t session_type;
u32 next_index = ~0;
vec_validate (smm->session_type_to_next, session_type);
vec_validate (smm->session_tx_fns, session_type);
- /* *INDENT-OFF* */
if (output_node != ~0)
+ next_index = vlib_node_add_next (vlib_get_main (),
+ session_queue_node.index, output_node);
+
+ smm->session_type_to_next[session_type] = next_index;
+ smm->session_tx_fns[session_type] =
+ session_tx_fns[vft->transport_options.tx_type];
+}
+
+void
+session_register_update_time_fn (session_update_time_fn fn, u8 is_add)
+{
+ session_main_t *smm = &session_main;
+ session_update_time_fn *fi;
+ u32 fi_pos = ~0;
+ u8 found = 0;
+
+ vec_foreach (fi, smm->update_time_fns)
{
- foreach_vlib_main (({
- next_index = vlib_node_add_next (this_vlib_main,
- session_queue_node.index,
- output_node);
- }));
+ if (*fi == fn)
+ {
+ fi_pos = fi - smm->update_time_fns;
+ found = 1;
+ break;
+ }
}
- /* *INDENT-ON* */
- smm->session_type_to_next[session_type] = next_index;
- smm->session_tx_fns[session_type] = session_tx_fns[vft->tx_type];
+ if (is_add)
+ {
+ if (found)
+ {
+ clib_warning ("update time fn %p already registered", fn);
+ return;
+ }
+ vec_add1 (smm->update_time_fns, fn);
+ }
+ else
+ {
+ vec_del1 (smm->update_time_fns, fi_pos);
+ }
+}
+
+transport_proto_t
+session_add_transport_proto (void)
+{
+ session_main_t *smm = &session_main;
+ session_worker_t *wrk;
+ u32 thread;
+
+ smm->last_transport_proto_type += 1;
+
+ for (thread = 0; thread < vec_len (smm->wrk); thread++)
+ {
+ wrk = session_main_get_worker (thread);
+ vec_validate (wrk->session_to_enqueue, smm->last_transport_proto_type);
+ }
+
+ return smm->last_transport_proto_type;
}
transport_connection_t *
s->connection_index);
}
+void
+session_get_endpoint (session_t * s, transport_endpoint_t * tep, u8 is_lcl)
+{
+ if (s->session_state != SESSION_STATE_LISTENING)
+ return transport_get_endpoint (session_get_transport_proto (s),
+ s->connection_index, s->thread_index, tep,
+ is_lcl);
+ else
+ return transport_get_listener_endpoint (session_get_transport_proto (s),
+ s->connection_index, tep, is_lcl);
+}
+
+int
+session_transport_attribute (session_t *s, u8 is_get,
+ transport_endpt_attr_t *attr)
+{
+ if (s->session_state < SESSION_STATE_READY)
+ return -1;
+
+ return transport_connection_attribute (session_get_transport_proto (s),
+ s->connection_index, s->thread_index,
+ is_get, attr);
+}
+
transport_connection_t *
listen_session_get_transport (session_t * s)
{
s->connection_index);
}
-int
-listen_session_get_local_session_endpoint (session_t * listener,
- session_endpoint_t * sep)
+void
+session_queue_run_on_main_thread (vlib_main_t * vm)
{
- transport_connection_t *tc;
- tc = listen_session_get_transport (listener);
- if (!tc)
+ ASSERT (vlib_get_thread_index () == 0);
+ vlib_node_set_interrupt_pending (vm, session_queue_node.index);
+}
+
+static void
+session_stats_collector_fn (vlib_stats_collector_data_t *d)
+{
+ u32 i, n_workers, n_wrk_sessions, n_sessions = 0;
+ session_main_t *smm = &session_main;
+ session_worker_t *wrk;
+ counter_t **counters;
+ counter_t *cb;
+
+ n_workers = vec_len (smm->wrk);
+ vlib_stats_validate (d->entry_index, 0, n_workers - 1);
+ counters = d->entry->data;
+ cb = counters[0];
+
+ for (i = 0; i < vec_len (smm->wrk); i++)
{
- clib_warning ("no transport");
- return -1;
+ wrk = session_main_get_worker (i);
+ n_wrk_sessions = pool_elts (wrk->sessions);
+ cb[i] = n_wrk_sessions;
+ n_sessions += n_wrk_sessions;
}
- /* N.B. The ip should not be copied because this is the local endpoint */
- sep->port = tc->lcl_port;
- sep->transport_proto = tc->proto;
- sep->is_ip4 = tc->is_ip4;
- return 0;
+ vlib_stats_set_gauge (d->private_data, n_sessions);
}
-void
-session_flush_frames_main_thread (vlib_main_t * vm)
+static void
+session_stats_collector_init (void)
{
- ASSERT (vlib_get_thread_index () == 0);
- vlib_process_signal_event_mt (vm, session_queue_process_node.index,
- SESSION_Q_PROCESS_FLUSH_FRAMES, 0);
+ vlib_stats_collector_reg_t reg = {};
+
+ reg.entry_index =
+ vlib_stats_add_counter_vector ("/sys/session/sessions_per_worker");
+ reg.private_data = vlib_stats_add_gauge ("/sys/session/sessions_total");
+ reg.collect_fn = session_stats_collector_fn;
+ vlib_stats_register_collector_fn (®);
+ vlib_stats_validate (reg.entry_index, 0, vlib_get_n_threads ());
}
static clib_error_t *
session_manager_main_enable (vlib_main_t * vm)
{
- segment_manager_main_init_args_t _sm_args = { 0 }, *sm_args = &_sm_args;
- session_manager_main_t *smm = &session_manager_main;
+ session_main_t *smm = &session_main;
vlib_thread_main_t *vtm = vlib_get_thread_main ();
u32 num_threads, preallocated_sessions_per_worker;
- session_manager_worker_t *wrk;
- int i, j;
+ session_worker_t *wrk;
+ int i;
+
+ /* We only initialize once and do not de-initialized on disable */
+ if (smm->is_initialized)
+ goto done;
num_threads = 1 /* main thread */ + vtm->n_threads;
/* Allocate cache line aligned worker contexts */
vec_validate_aligned (smm->wrk, num_threads - 1, CLIB_CACHE_LINE_BYTES);
-
- for (i = 0; i < TRANSPORT_N_PROTO; i++)
- {
- for (j = 0; j < num_threads; j++)
- smm->wrk[j].current_enqueue_epoch[i] = 1;
- }
+ clib_spinlock_init (&session_main.pool_realloc_lock);
for (i = 0; i < num_threads; i++)
{
wrk = &smm->wrk[i];
- vec_validate (wrk->free_event_vector, 128);
- _vec_len (wrk->free_event_vector) = 0;
- vec_validate (wrk->pending_event_vector, 128);
- _vec_len (wrk->pending_event_vector) = 0;
- vec_validate (wrk->pending_disconnects, 128);
- _vec_len (wrk->pending_disconnects) = 0;
- vec_validate (wrk->postponed_event_vector, 128);
- _vec_len (wrk->postponed_event_vector) = 0;
-
- wrk->last_vlib_time = vlib_time_now (vlib_mains[i]);
- wrk->dispatch_period = 500e-6;
-
- if (num_threads > 1)
- clib_rwlock_init (&smm->wrk[i].peekers_rw_locks);
+ wrk->ctrl_head = clib_llist_make_head (wrk->event_elts, evt_list);
+ wrk->new_head = clib_llist_make_head (wrk->event_elts, evt_list);
+ wrk->old_head = clib_llist_make_head (wrk->event_elts, evt_list);
+ wrk->pending_connects = clib_llist_make_head (wrk->event_elts, evt_list);
+ wrk->evts_pending_main =
+ clib_llist_make_head (wrk->event_elts, evt_list);
+ wrk->vm = vlib_get_main_by_index (i);
+ wrk->last_vlib_time = vlib_time_now (vm);
+ wrk->last_vlib_us_time = wrk->last_vlib_time * CLIB_US_TIME_FREQ;
+ wrk->timerfd = -1;
+ vec_validate (wrk->session_to_enqueue, smm->last_transport_proto_type);
+
+ if (!smm->no_adaptive && smm->use_private_rx_mqs)
+ session_wrk_enable_adaptive_mode (wrk);
}
-#if SESSION_DEBUG
- vec_validate (smm->last_event_poll_by_thread, num_threads - 1);
-#endif
-
/* Allocate vpp event queues segment and queue */
- session_vpp_event_queues_allocate (smm);
+ session_vpp_wrk_mqs_alloc (smm);
- /* Initialize fifo segment main baseva and timeout */
- sm_args->baseva = smm->session_baseva + smm->evt_qs_segment_size;
- sm_args->size = smm->session_va_space_size;
- segment_manager_main_init (sm_args);
+ /* Initialize segment manager properties */
+ segment_manager_main_init ();
/* Preallocate sessions */
if (smm->preallocated_sessions)
session_lookup_init ();
app_namespaces_init ();
transport_init ();
+ session_stats_collector_init ();
+ smm->is_initialized = 1;
+
+done:
smm->is_enabled = 1;
/* Enable transports */
transport_enable_disable (vm, 1);
- transport_init_tx_pacers_period ();
+ session_debug_init ();
+
return 0;
}
+static void
+session_manager_main_disable (vlib_main_t * vm)
+{
+ transport_enable_disable (vm, 0 /* is_en */ );
+}
+
+/* in this new callback, cookie hint the index */
+void
+session_dma_completion_cb (vlib_main_t *vm, struct vlib_dma_batch *batch)
+{
+ session_worker_t *wrk;
+ wrk = session_main_get_worker (vm->thread_index);
+ session_dma_transfer *dma_transfer;
+
+ dma_transfer = &wrk->dma_trans[wrk->trans_head];
+ vec_add (wrk->pending_tx_buffers, dma_transfer->pending_tx_buffers,
+ vec_len (dma_transfer->pending_tx_buffers));
+ vec_add (wrk->pending_tx_nexts, dma_transfer->pending_tx_nexts,
+ vec_len (dma_transfer->pending_tx_nexts));
+ vec_reset_length (dma_transfer->pending_tx_buffers);
+ vec_reset_length (dma_transfer->pending_tx_nexts);
+ wrk->trans_head++;
+ if (wrk->trans_head == wrk->trans_size)
+ wrk->trans_head = 0;
+ return;
+}
+
+static void
+session_prepare_dma_args (vlib_dma_config_t *args)
+{
+ args->max_transfers = DMA_TRANS_SIZE;
+ args->max_transfer_size = 65536;
+ args->features = 0;
+ args->sw_fallback = 1;
+ args->barrier_before_last = 1;
+ args->callback_fn = session_dma_completion_cb;
+}
+
+static void
+session_node_enable_dma (u8 is_en, int n_vlibs)
+{
+ vlib_dma_config_t args;
+ session_prepare_dma_args (&args);
+ session_worker_t *wrk;
+ vlib_main_t *vm;
+
+ int config_index = -1;
+
+ if (is_en)
+ {
+ vm = vlib_get_main_by_index (0);
+ config_index = vlib_dma_config_add (vm, &args);
+ }
+ else
+ {
+ vm = vlib_get_main_by_index (0);
+ wrk = session_main_get_worker (0);
+ if (wrk->config_index >= 0)
+ vlib_dma_config_del (vm, wrk->config_index);
+ }
+ int i;
+ for (i = 0; i < n_vlibs; i++)
+ {
+ vm = vlib_get_main_by_index (i);
+ wrk = session_main_get_worker (vm->thread_index);
+ wrk->config_index = config_index;
+ if (is_en)
+ {
+ if (config_index >= 0)
+ wrk->dma_enabled = true;
+ wrk->dma_trans = (session_dma_transfer *) clib_mem_alloc (
+ sizeof (session_dma_transfer) * DMA_TRANS_SIZE);
+ bzero (wrk->dma_trans,
+ sizeof (session_dma_transfer) * DMA_TRANS_SIZE);
+ }
+ else
+ {
+ if (wrk->dma_trans)
+ clib_mem_free (wrk->dma_trans);
+ }
+ wrk->trans_head = 0;
+ wrk->trans_tail = 0;
+ wrk->trans_size = DMA_TRANS_SIZE;
+ }
+}
+
void
session_node_enable_disable (u8 is_en)
{
+ u8 mstate = is_en ? VLIB_NODE_STATE_INTERRUPT : VLIB_NODE_STATE_DISABLED;
u8 state = is_en ? VLIB_NODE_STATE_POLLING : VLIB_NODE_STATE_DISABLED;
- vlib_thread_main_t *vtm = vlib_get_thread_main ();
- u8 have_workers = vtm->n_threads != 0;
-
- /* *INDENT-OFF* */
- foreach_vlib_main (({
- if (have_workers && ii == 0)
- {
- vlib_node_set_state (this_vlib_main, session_queue_process_node.index,
- state);
- if (is_en)
- {
- vlib_node_t *n = vlib_get_node (this_vlib_main,
- session_queue_process_node.index);
- vlib_start_process (this_vlib_main, n->runtime_index);
- }
- else
- {
- vlib_process_signal_event_mt (this_vlib_main,
- session_queue_process_node.index,
- SESSION_Q_PROCESS_STOP, 0);
- }
+ session_main_t *sm = &session_main;
+ vlib_main_t *vm;
+ vlib_node_t *n;
+ int n_vlibs, i;
- continue;
- }
- vlib_node_set_state (this_vlib_main, session_queue_node.index,
- state);
- }));
- /* *INDENT-ON* */
+ n_vlibs = vlib_get_n_threads ();
+ for (i = 0; i < n_vlibs; i++)
+ {
+ vm = vlib_get_main_by_index (i);
+ /* main thread with workers and not polling */
+ if (i == 0 && n_vlibs > 1)
+ {
+ vlib_node_set_state (vm, session_queue_node.index, mstate);
+ if (is_en)
+ {
+ session_main_get_worker (0)->state = SESSION_WRK_INTERRUPT;
+ vlib_node_set_state (vm, session_queue_process_node.index,
+ state);
+ n = vlib_get_node (vm, session_queue_process_node.index);
+ vlib_start_process (vm, n->runtime_index);
+ }
+ else
+ {
+ vlib_process_signal_event_mt (vm,
+ session_queue_process_node.index,
+ SESSION_Q_PROCESS_STOP, 0);
+ }
+ if (!sm->poll_main)
+ continue;
+ }
+ vlib_node_set_state (vm, session_queue_node.index, state);
+ }
+
+ if (sm->use_private_rx_mqs)
+ application_enable_rx_mqs_nodes (is_en);
+
+ if (sm->dma_enabled)
+ session_node_enable_dma (is_en, n_vlibs);
}
clib_error_t *
clib_error_t *error = 0;
if (is_en)
{
- if (session_manager_main.is_enabled)
+ if (session_main.is_enabled)
return 0;
- session_node_enable_disable (is_en);
error = session_manager_main_enable (vm);
+ session_node_enable_disable (is_en);
}
else
{
- session_manager_main.is_enabled = 0;
+ session_main.is_enabled = 0;
+ session_manager_main_disable (vm);
session_node_enable_disable (is_en);
}
}
clib_error_t *
-session_manager_main_init (vlib_main_t * vm)
-{
- session_manager_main_t *smm = &session_manager_main;
- smm->session_baseva = HIGH_SEGMENT_BASEVA;
-#if (HIGH_SEGMENT_BASEVA > (4ULL << 30))
- smm->session_va_space_size = 128ULL << 30;
- smm->evt_qs_segment_size = 64 << 20;
-#else
- smm->session_va_space_size = 128 << 20;
- smm->evt_qs_segment_size = 1 << 20;
-#endif
+session_main_init (vlib_main_t * vm)
+{
+ session_main_t *smm = &session_main;
+
smm->is_enabled = 0;
+ smm->session_enable_asap = 0;
+ smm->poll_main = 0;
+ smm->use_private_rx_mqs = 0;
+ smm->no_adaptive = 0;
+ smm->last_transport_proto_type = TRANSPORT_PROTO_HTTP;
+
return 0;
}
-VLIB_INIT_FUNCTION (session_manager_main_init);
+static clib_error_t *
+session_main_loop_init (vlib_main_t * vm)
+{
+ session_main_t *smm = &session_main;
+ if (smm->session_enable_asap)
+ {
+ vlib_worker_thread_barrier_sync (vm);
+ vnet_session_enable_disable (vm, 1 /* is_en */ );
+ vlib_worker_thread_barrier_release (vm);
+ }
+ return 0;
+}
+
+VLIB_INIT_FUNCTION (session_main_init);
+VLIB_MAIN_LOOP_ENTER_FUNCTION (session_main_loop_init);
static clib_error_t *
session_config_fn (vlib_main_t * vm, unformat_input_t * input)
{
- session_manager_main_t *smm = &session_manager_main;
+ session_main_t *smm = &session_main;
u32 nitems;
uword tmp;
while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
{
- if (unformat (input, "event-queue-length %d", &nitems))
+ if (unformat (input, "wrk-mq-length %d", &nitems))
{
if (nitems >= 2048)
- smm->configured_event_queue_length = nitems;
+ smm->configured_wrk_mq_length = nitems;
else
clib_warning ("event queue length %d too small, ignored", nitems);
}
+ else if (unformat (input, "wrk-mqs-segment-size %U",
+ unformat_memory_size, &smm->wrk_mqs_segment_size))
+ ;
else if (unformat (input, "preallocated-sessions %d",
&smm->preallocated_sessions))
;
else if (unformat (input, "local-endpoints-table-buckets %d",
&smm->local_endpoints_table_buckets))
;
+ else if (unformat (input, "enable"))
+ smm->session_enable_asap = 1;
+ else if (unformat (input, "use-app-socket-api"))
+ (void) appns_sapi_enable_disable (1 /* is_enable */);
+ else if (unformat (input, "poll-main"))
+ smm->poll_main = 1;
+ else if (unformat (input, "use-private-rx-mqs"))
+ smm->use_private_rx_mqs = 1;
+ else if (unformat (input, "no-adaptive"))
+ smm->no_adaptive = 1;
+ else if (unformat (input, "use-dma"))
+ smm->dma_enabled = 1;
+ /*
+ * Deprecated but maintained for compatibility
+ */
else if (unformat (input, "evt_qs_memfd_seg"))
- smm->evt_qs_use_memfd_seg = 1;
+ ;
+ else if (unformat (input, "segment-baseva 0x%lx", &tmp))
+ ;
+ else if (unformat (input, "evt_qs_seg_size %U", unformat_memory_size,
+ &smm->wrk_mqs_segment_size))
+ ;
+ else if (unformat (input, "event-queue-length %d", &nitems))
+ {
+ if (nitems >= 2048)
+ smm->configured_wrk_mq_length = nitems;
+ else
+ clib_warning ("event queue length %d too small, ignored", nitems);
+ }
else
return clib_error_return (0, "unknown input `%U'",
format_unformat_error, input);
Code Review / vpp.git / blobdiff