/*
- * Copyright (c) 2017 Cisco and/or its affiliates.
+ * Copyright (c) 2017-2019 Cisco and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*/
#include <vnet/session/session.h>
-#include <vnet/session/session_debug.h>
#include <vnet/session/application.h>
-#include <vlibmemory/api.h>
#include <vnet/dpo/load_balance.h>
#include <vnet/fib/ip4_fib.h>
-session_manager_main_t session_manager_main;
-extern transport_proto_vft_t *tp_vfts;
+session_main_t session_main;
static inline int
session_send_evt_to_thread (void *data, void *args, u32 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 = session_main_get_vpp_event_queue (thread_index);
+ if (PREDICT_FALSE (svm_msg_q_lock (mq)))
+ return -1;
+ if (PREDICT_FALSE (svm_msg_q_is_full (mq)
+ || svm_msg_q_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:
- evt->session_handle = session_handle ((stream_session_t *) data);
+ 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:
clib_warning ("evt unhandled!");
svm_msg_q_unlock (mq);
return -1;
}
+ evt->event_type = evt_type;
svm_msg_q_add_and_unlock (mq, &msg);
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->master_session_index, 0,
+ f->master_thread_index, evt_type);
}
int
}
int
-session_send_ctrl_evt_to_thread (stream_session_t * s,
- session_evt_type_t evt_type)
+session_send_ctrl_evt_to_thread (session_t * s, session_evt_type_t evt_type)
+{
+ /* only events supported are disconnect and reset */
+ ASSERT (evt_type == SESSION_CTRL_EVT_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)
{
- /* 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);
+ 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;
+
+ 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_worker_t *wrk;
+ session_evt_elt_t *elt;
+ 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;
+ }
+ }
+}
+
+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;
+}
+
static void
-session_program_transport_close (stream_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;
}
else
- session_send_ctrl_evt_to_thread (s, FIFO_EVENT_DISCONNECT);
+ session_send_ctrl_evt_to_thread (s, evt);
}
-stream_session_t *
+session_t *
session_alloc (u32 thread_index)
{
- session_manager_worker_t *wrk = &session_manager_main.wrk[thread_index];
- stream_session_t *s;
+ 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);
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 (stream_session_t * s)
+session_free (session_t * s)
{
- pool_put (session_manager_main.wrk[s->thread_index].sessions, s);
if (CLIB_DEBUG)
- clib_memset (s, 0xFA, sizeof (*s));
+ {
+ u8 thread_index = s->thread_index;
+ clib_memset (s, 0xFA, sizeof (*s));
+ pool_put (session_main.wrk[thread_index].sessions, s);
+ return;
+ }
+ SESSION_EVT (SESSION_EVT_FREE, s);
+ pool_put (session_main.wrk[s->thread_index].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)
+ return 1;
+
+ 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;
+
+ 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 (stream_session_t * s)
+session_free_w_fifos (session_t * s)
{
- segment_manager_dealloc_fifos (s->svm_segment_index, s->server_rx_fifo,
- s->server_tx_fifo);
+ session_cleanup_notify (s, SESSION_CLEANUP_SESSION);
+ segment_manager_dealloc_fifos (s->rx_fifo, s->tx_fifo);
session_free (s);
}
* Transport connection must still be valid.
*/
static void
-session_delete (stream_session_t * s)
+session_delete (session_t * s)
{
int rv;
/* 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, stream_session_t * s)
+void
+session_cleanup_half_open (transport_proto_t tp, session_handle_t ho_handle)
{
- svm_fifo_t *server_rx_fifo = 0, *server_tx_fifo = 0;
- u32 fifo_segment_index;
- int rv;
-
- 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;
-
- server_tx_fifo->master_session_index = s->session_index;
- server_tx_fifo->master_thread_index = s->thread_index;
+ transport_cleanup_half_open (tp, session_handle_index (ho_handle));
+}
- s->server_rx_fifo = server_rx_fifo;
- s->server_tx_fifo = server_tx_fifo;
- s->svm_segment_index = fifo_segment_index;
- return 0;
+void
+session_half_open_delete_notify (transport_proto_t tp,
+ session_handle_t ho_handle)
+{
+ app_worker_t *app_wrk = app_worker_get (session_handle_data (ho_handle));
+ app_worker_del_half_open (app_wrk, tp, ho_handle);
}
-static stream_session_t *
+session_t *
session_alloc_for_connection (transport_connection_t * tc)
{
- stream_session_t *s;
+ session_t *s;
u32 thread_index = tc->thread_index;
ASSERT (thread_index == vlib_get_thread_index ()
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;
/* Attach transport to session and vice versa */
return s;
}
-static int
-session_alloc_and_init (segment_manager_t * sm, transport_connection_t * tc,
- u8 alloc_fifos, stream_session_t ** ret_s)
-{
- stream_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;
-}
-
/**
* Discards bytes from buffer chain
*
* Enqueue buffer chain tail
*/
always_inline int
-session_enqueue_chain_tail (stream_session_t * s, vlib_buffer_t * b,
+session_enqueue_chain_tail (session_t * s, vlib_buffer_t * b,
u32 offset, u8 is_in_order)
{
vlib_buffer_t *chain_b;
continue;
if (is_in_order)
{
- rv = svm_fifo_enqueue_nowait (s->server_rx_fifo, len, data);
+ rv = svm_fifo_enqueue (s->rx_fifo, len, data);
if (rv == len)
{
written += rv;
}
else
{
- rv = svm_fifo_enqueue_with_offset (s->server_rx_fifo, offset, len,
- data);
+ rv = svm_fifo_enqueue_with_offset (s->rx_fifo, offset, len, data);
if (rv)
{
clib_warning ("failed to enqueue multi-buffer seg");
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->size >= 4096);
+ ASSERT (f->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
vlib_buffer_t * b, u32 offset,
u8 queue_event, u8 is_in_order)
{
- stream_session_t *s;
+ session_t *s;
int enqueued = 0, rv, in_order_off;
s = session_get (tc->s_index, tc->thread_index);
if (is_in_order)
{
- enqueued = svm_fifo_enqueue_nowait (s->server_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))
{
}
else
{
- rv = svm_fifo_enqueue_with_offset (s->server_rx_fifo, offset,
+ rv = svm_fifo_enqueue_with_offset (s->rx_fifo, offset,
b->current_length,
vlib_buffer_get_current (b));
if (PREDICT_FALSE ((b->flags & VLIB_BUFFER_NEXT_PRESENT) && !rv))
{
/* 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;
}
int
-session_enqueue_dgram_connection (stream_session_t * s,
+session_enqueue_dgram_connection (session_t * s,
session_dgram_hdr_t * hdr,
vlib_buffer_t * b, u8 proto, u8 queue_event)
{
int enqueued = 0, rv, in_order_off;
- ASSERT (svm_fifo_max_enqueue (s->server_rx_fifo)
+ ASSERT (svm_fifo_max_enqueue_prod (s->rx_fifo)
>= b->current_length + sizeof (*hdr));
- svm_fifo_enqueue_nowait (s->server_rx_fifo, sizeof (session_dgram_hdr_t),
- (u8 *) hdr);
- enqueued = svm_fifo_enqueue_nowait (s->server_rx_fifo, b->current_length,
- vlib_buffer_get_current (b));
+ svm_fifo_enqueue (s->rx_fifo, sizeof (session_dgram_hdr_t), (u8 *) hdr);
+ 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))
{
in_order_off = enqueued > b->current_length ? 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[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);
}
+
+ session_fifo_tuning (s, s->rx_fifo, SESSION_FT_ACTION_ENQUEUED, 0);
}
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)
+int
+session_tx_fifo_peek_bytes (transport_connection_t * tc, u8 * buffer,
+ u32 offset, u32 max_bytes)
{
- stream_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->server_rx_fifo))
- return 1;
-
- return 0;
+ session_t *s = session_get (tc->s_index, tc->thread_index);
+ return svm_fifo_peek (s->tx_fifo, offset, max_bytes, buffer);
}
u32
-session_tx_fifo_max_dequeue (transport_connection_t * tc)
+session_tx_fifo_dequeue_drop (transport_connection_t * tc, u32 max_bytes)
{
- stream_session_t *s = session_get (tc->s_index, tc->thread_index);
- if (!s->server_tx_fifo)
- return 0;
- return svm_fifo_max_dequeue (s->server_tx_fifo);
-}
+ session_t *s = session_get (tc->s_index, tc->thread_index);
+ u32 rv;
-int
-stream_session_peek_bytes (transport_connection_t * tc, u8 * buffer,
- u32 offset, u32 max_bytes)
-{
- stream_session_t *s = session_get (tc->s_index, tc->thread_index);
- return svm_fifo_peek (s->server_tx_fifo, offset, max_bytes, buffer);
+ 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;
}
-u32
-stream_session_dequeue_drop (transport_connection_t * tc, u32 max_bytes)
+static inline int
+session_notify_subscribers (u32 app_index, session_t * s,
+ svm_fifo_t * f, session_evt_type_t evt_type)
{
- stream_session_t *s = session_get (tc->s_index, tc->thread_index);
- return svm_fifo_dequeue_drop (s->server_tx_fifo, max_bytes);
+ app_worker_t *app_wrk;
+ application_t *app;
+ int i;
+
+ app = application_get (app_index);
+ if (!app)
+ return -1;
+
+ for (i = 0; i < f->n_subscribers; i++)
+ {
+ app_wrk = application_get_worker (app, f->subscribers[i]);
+ if (!app_wrk)
+ continue;
+ if (app_worker_lock_and_send_event (app_wrk, s, evt_type))
+ return -1;
+ }
+
+ return 0;
}
/**
* @return 0 on success or negative number if failed to send notification.
*/
static inline int
-session_enqueue_notify (stream_session_t * s)
+session_enqueue_notify_inline (session_t * s)
{
- app_worker_t *app;
+ 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 = app_worker_get_if_valid (s->app_wrk_index);
- if (PREDICT_FALSE (!app))
+ app_wrk = app_worker_get_if_valid (s->app_wrk_index);
+ if (PREDICT_FALSE (!app_wrk))
{
SESSION_DBG ("invalid s->app_index = %d", s->app_wrk_index);
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->server_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,
+ SESSION_IO_EVT_RX)))
+ return -1;
+
+ 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);
- return app_worker_lock_and_send_event (app, s, FIFO_EVENT_APP_RX);
+ /*
+ * 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 (stream_session_t * s)
+session_dequeue_notify (session_t * s)
{
- app_worker_t *app;
+ 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;
- app = app_worker_get_if_valid (s->app_wrk_index);
- if (PREDICT_FALSE (!app))
+ if (PREDICT_FALSE (app_worker_lock_and_send_event (app_wrk, s,
+ SESSION_IO_EVT_TX)))
return -1;
- return app_worker_lock_and_send_event (app, s, FIFO_EVENT_APP_TX);
+ if (PREDICT_FALSE (s->tx_fifo->n_subscribers))
+ return session_notify_subscribers (app_wrk->app_index, s,
+ 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);
- stream_session_t *s;
+ 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)
-{
- stream_session_t *s;
- s = session_get (tc->s_index, tc->thread_index);
- svm_fifo_init_pointers (s->server_rx_fifo, rx_pointer);
- svm_fifo_init_pointers (s->server_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)
{
+ session_handle_t ho_handle, wrk_handle;
u32 opaque = 0, new_ti, new_si;
- stream_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;
/*
* Find connection handle and cleanup half-open table
*/
- handle = session_lookup_half_open_handle (tc);
- if (handle == HALF_OPEN_LOOKUP_INVALID_VALUE)
+ ho_handle = session_lookup_half_open_handle (tc);
+ if (ho_handle == HALF_OPEN_LOOKUP_INVALID_VALUE)
{
SESSION_DBG ("half-open was removed!");
return -1;
/* 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);
+ app_wrk = app_worker_get_if_valid (session_handle_data (ho_handle));
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;
- }
- }
+ wrk_handle = app_worker_lookup_half_open (app_wrk, tc->proto, ho_handle);
+ if (wrk_handle == SESSION_INVALID_HANDLE)
+ return -1;
- /*
- * Notify client application
- */
- if (app->cb_fns.session_connected_callback (app_wrk->wrk_index, opaque,
- new_s, is_fail))
+ /* Make sure this is the same half-open index */
+ if (session_handle_index (wrk_handle) != session_handle_index (ho_handle))
+ return -1;
+
+ opaque = session_handle_data (wrk_handle);
+
+ if (err)
+ return app_worker_connect_notify (app_wrk, s, err, opaque);
+
+ s = session_alloc_for_connection (tc);
+ s->session_state = 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);
+ s->session_state = 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;
+}
+
+static void
+session_switch_pool_reply (void *arg)
+{
+ u32 session_index = pointer_to_uword (arg);
+ segment_manager_t *sm;
+ app_worker_t *app_wrk;
+ session_t *s;
+
+ s = session_get_if_valid (session_index, vlib_get_thread_index ());
+ if (!s)
+ return;
+
+ app_wrk = app_worker_get_if_valid (s->app_wrk_index);
+ if (!app_wrk)
+ return;
+
+ /* Attach fifos to the right session and segment slice */
+ sm = app_worker_get_connect_segment_manager (app_wrk);
+ segment_manager_attach_fifo (sm, s->rx_fifo, s);
+ segment_manager_attach_fifo (sm, s->tx_fifo, s);
+
+ /* Notify app that it has data on the new session */
+ session_enqueue_notify (s);
}
typedef struct _session_switch_pool_args
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;
- transport_proto_t tp;
- stream_session_t *s;
+ session_handle_t new_sh;
+ segment_manager_t *sm;
+ app_worker_t *app_wrk;
+ session_t *s;
+ void *rargs;
+
ASSERT (args->thread_index == vlib_get_thread_index ());
s = session_get (args->session_index, args->thread_index);
- s->server_tx_fifo->master_session_index = args->new_session_index;
- s->server_tx_fifo->master_thread_index = args->new_thread_index;
- tp = session_get_transport_proto (s);
- tp_vfts[tp].cleanup (s->connection_index, s->thread_index);
+
+ transport_cleanup (session_get_transport_proto (s), s->connection_index,
+ s->thread_index);
+
+ new_sh = session_make_handle (args->new_session_index,
+ args->new_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 */
+ app_worker_migrate_notify (app_wrk, s, new_sh);
+ }
+
+ /* Trigger app read and fifo updates on the new thread */
+ rargs = uword_to_pointer (args->new_session_index, void *);
+ session_send_rpc_evt_to_thread (args->new_thread_index,
+ session_switch_pool_reply, rargs);
+
session_free (s);
clib_mem_free (cb_args);
}
*/
int
session_dgram_connect_notify (transport_connection_t * tc,
- u32 old_thread_index,
- stream_session_t ** new_session)
+ u32 old_thread_index, session_t ** new_session)
{
- stream_session_t *new_s;
+ session_t *new_s;
session_switch_pool_args_t *rpc_args;
/*
*/
new_s = session_clone_safe (tc->s_index, old_thread_index);
new_s->connection_index = tc->c_index;
- new_s->server_rx_fifo->master_session_index = new_s->session_index;
- new_s->server_rx_fifo->master_thread_index = new_s->thread_index;
new_s->session_state = SESSION_STATE_READY;
+ new_s->flags |= SESSION_F_IS_MIGRATING;
+
session_lookup_add_connection (tc, session_handle (new_s));
/*
return 0;
}
-int
-stream_session_accept_notify (transport_connection_t * tc)
-{
- app_worker_t *app_wrk;
- application_t *app;
- stream_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;
- stream_session_t *s;
+ 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);
+ app_wrk = app_worker_get (s->app_wrk_index);
+ app_worker_close_notify (app_wrk, s);
}
/**
void
session_transport_delete_notify (transport_connection_t * tc)
{
- stream_session_t *s;
+ session_t *s;
/* App might've been removed already */
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->server_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;
+ s->session_state = 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);
+ s->session_state = 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)
{
- stream_session_t *s;
+ app_worker_t *app_wrk;
+ session_t *s;
if (!(s = session_get_if_valid (tc->s_index, tc->thread_index)))
return;
+ /* Transport thinks that app requested close but it actually didn't.
+ * Can happen for tcp if fin and rst are received in close succession. */
+ if (s->session_state == SESSION_STATE_READY)
+ {
+ session_transport_closing_notify (tc);
+ svm_fifo_dequeue_drop_all (s->tx_fifo);
+ s->session_state = SESSION_STATE_TRANSPORT_CLOSED;
+ }
/* 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)
+ else if (s->session_state <= SESSION_STATE_CLOSING)
{
- session_lookup_del_session (s);
s->session_state = SESSION_STATE_TRANSPORT_CLOSED;
}
- else
+ /* If app also closed, switch to closed */
+ else if (s->session_state == SESSION_STATE_APP_CLOSED)
s->session_state = 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)
{
- stream_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->server_tx_fifo);
+ svm_fifo_dequeue_drop_all (s->tx_fifo);
if (s->session_state >= SESSION_STATE_TRANSPORT_CLOSING)
return;
s->session_state = 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;
+ s->session_state = 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. */
+ s->session_state = SESSION_STATE_CREATED;
+ return -1;
+ }
+ return 0;
}
/**
* Accept a stream session. Optionally ping the server by callback.
*/
int
-stream_session_accept (transport_connection_t * tc, u32 listener_index,
- u8 notify)
+session_stream_accept (transport_connection_t * tc, u32 listener_index,
+ u32 thread_index, u8 notify)
{
- stream_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, 0);
+ s = session_alloc_for_connection (tc);
+ s->listener_handle = ((u64) thread_index << 32) | (u64) listener_index;
+ s->session_state = 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;
+ }
+
+ app_wrk = app_worker_get (s->app_wrk_index);
+ if ((rv = app_worker_accept_notify (app_wrk, s)))
+ {
+ segment_manager_dealloc_fifos (s->rx_fifo, s->tx_fifo);
+ session_free (s);
+ return rv;
}
+ s->session_state = SESSION_STATE_READY;
+ session_lookup_add_connection (tc, session_handle (s));
+
return 0;
}
{
transport_connection_t *tc;
transport_endpoint_cfg_t *tep;
- segment_manager_t *sm;
app_worker_t *app_wrk;
- stream_session_t *s;
- application_t *app;
+ session_handle_t sh;
+ session_t *s;
int rv;
tep = session_endpoint_to_transport_cfg (rmt);
- rv = tp_vfts[rmt->transport_proto].open (tep);
+ rv = transport_connect (rmt->transport_proto, tep);
if (rv < 0)
{
SESSION_DBG ("Transport failed to open connection.");
- return VNET_API_ERROR_SESSION_CONNECT;
+ return rv;
}
- tc = tp_vfts[rmt->transport_proto].get_half_open ((u32) rv);
+ tc = transport_get_half_open (rmt->transport_proto, (u32) rv);
- /* For dgram type of service, allocate session and fifos now.
- */
+ /* 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;
+ s = session_alloc_for_connection (tc);
s->app_wrk_index = app_wrk->wrk_index;
s->session_state = 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);
-
- return 0;
+ sh = session_handle (s);
+ session_lookup_add_connection (tc, sh);
+ return app_worker_connect_notify (app_wrk, s, SESSION_E_NONE, opaque);
}
int
{
transport_connection_t *tc;
transport_endpoint_cfg_t *tep;
- u64 handle;
+ u64 handle, wrk_handle;
int rv;
tep = session_endpoint_to_transport_cfg (rmt);
- rv = tp_vfts[rmt->transport_proto].open (tep);
+ rv = transport_connect (rmt->transport_proto, tep);
if (rv < 0)
{
SESSION_DBG ("Transport failed to open connection.");
- return VNET_API_ERROR_SESSION_CONNECT;
+ return rv;
}
- tc = tp_vfts[rmt->transport_proto].get_half_open ((u32) 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.
* 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;
+ handle = session_make_handle (tc->c_index, app_wrk_index);
session_lookup_add_half_open (tc, handle);
- /* Store api_context (opaque) for when the reply comes. Not the nicest
- * thing but better than allocating a separate half-open pool.
+ /* Store the half-open handle in the connection. Transport will use it
+ * when cleaning up @ref session_half_open_delete_notify
*/
- tc->s_index = opaque;
+ tc->s_ho_handle = handle;
+
+ /* Track the half-open connections in case we want to forcefully
+ * clean them up @ref session_cleanup_half_open
+ */
+ wrk_handle = session_make_handle (tc->c_index, opaque);
+ app_worker_add_half_open (app_worker_get (app_wrk_index),
+ rmt->transport_proto, handle, wrk_handle);
+
return 0;
}
sep->app_wrk_index = app_wrk_index;
sep->opaque = opaque;
- return tp_vfts[rmt->transport_proto].open (tep_cfg);
+ return transport_connect (rmt->transport_proto, tep_cfg);
}
typedef int (*session_open_service_fn) (u32, session_endpoint_t *, u32);
int
session_open (u32 app_wrk_index, session_endpoint_t * rmt, u32 opaque)
{
- transport_service_type_t tst = tp_vfts[rmt->transport_proto].service_type;
+ transport_service_type_t tst;
+ tst = transport_protocol_service_type (rmt->transport_proto);
return session_open_srv_fns[tst] (app_wrk_index, rmt, opaque);
}
* @param sep Local endpoint to be listened on.
*/
int
-session_listen (stream_session_t * ls, session_endpoint_cfg_t * sep)
+session_listen (session_t * ls, session_endpoint_cfg_t * sep)
{
- transport_connection_t *tc;
transport_endpoint_t *tep;
- u32 tc_index, s_index;
+ int tc_index;
+ u32 s_index;
/* Transport bind/listen */
tep = session_endpoint_to_transport (sep);
s_index = ls->session_index;
- tc_index = tp_vfts[sep->transport_proto].bind (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;
- /* Add to the main lookup table after transport was initialized */
- tc = tp_vfts[sep->transport_proto].get_listener (tc_index);
- session_lookup_add_connection (tc, s_index);
return 0;
}
* @param s Session to stop listening on. It must be in state LISTENING.
*/
int
-session_stop_listen (stream_session_t * s)
+session_stop_listen (session_t * s)
{
transport_proto_t tp = session_get_transport_proto (s);
transport_connection_t *tc;
+
if (s->session_state != SESSION_STATE_LISTENING)
- {
- clib_warning ("not a listening session");
- return -1;
- }
+ return SESSION_E_NOLISTEN;
- tc = tp_vfts[tp].get_listener (s->connection_index);
+ tc = transport_get_listener (tp, s->connection_index);
+
+ /* If no transport, assume everything was cleaned up already */
if (!tc)
- {
- clib_warning ("no transport");
- 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);
- tp_vfts[tp].unbind (s->connection_index);
+ transport_stop_listen (tp, s->connection_index);
return 0;
}
* requests are served before transport is notified.
*/
void
-session_close (stream_session_t * s)
+session_close (session_t * s)
{
if (!s)
return;
{
/* 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);
-
- /* Session already closed. Clear the tx fifo */
- if (s->session_state == SESSION_STATE_CLOSED)
- svm_fifo_dequeue_drop_all (s->server_tx_fifo);
+ 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;
}
s->session_state = SESSION_STATE_CLOSING;
- session_program_transport_close (s);
+ 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 */
+ svm_fifo_dequeue_drop_all (s->tx_fifo);
+ s->session_state = SESSION_STATE_CLOSING;
+ session_program_transport_ctrl_evt (s, SESSION_CTRL_EVT_RESET);
}
/**
* Must be called from the session's thread.
*/
void
-session_transport_close (stream_session_t * s)
+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)
+ s->session_state = 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->server_tx_fifo))
- s->session_state = SESSION_STATE_CLOSED_WAITING;
- else
- s->session_state = SESSION_STATE_CLOSED;
+ s->session_state = 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)
+ s->session_state = SESSION_STATE_CLOSED;
+ else if (s->session_state >= SESSION_STATE_TRANSPORT_DELETED)
+ session_free_w_fifos (s);
+ return;
+ }
- tp_vfts[session_get_transport_proto (s)].close (s->connection_index,
- s->thread_index);
+ s->session_state = SESSION_STATE_APP_CLOSED;
+ transport_reset (session_get_transport_proto (s), s->connection_index,
+ s->thread_index);
}
/**
* closed.
*/
void
-session_transport_cleanup (stream_session_t * s)
+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);
- tp_vfts[session_get_transport_proto (s)].cleanup (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);
-}
-
-transport_service_type_t
-session_transport_service_type (stream_session_t * s)
-{
- transport_proto_t tp;
- tp = session_get_transport_proto (s);
- return transport_protocol_service_type (tp);
-}
-
-transport_tx_fn_type_t
-session_transport_tx_fn_type (stream_session_t * s)
-{
- transport_proto_t tp;
- tp = session_get_transport_proto (s);
- return transport_protocol_tx_fn_type (tp);
-}
-
-u8
-session_tx_is_dgram (stream_session_t * s)
-{
- return (session_transport_tx_fn_type (s) == TRANSPORT_TX_DGRAM);
+ segment_manager_dealloc_fifos (s->rx_fifo, s->tx_fifo);
+ session_free (s);
}
/**
* vpp uses api svm region for event queues.
*/
void
-session_vpp_event_queues_allocate (session_manager_main_t * smm)
+session_vpp_event_queues_allocate (session_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;
+ uword eqs_size = 64 << 20;
pid_t vpp_pid = getpid ();
void *oldheap;
int i;
if (smm->evt_qs_use_memfd_seg)
oldheap = ssvm_push_heap (eqs->sh);
else
- oldheap = svm_push_data_heap (am->vlib_rp);
+ oldheap = vl_msg_push_heap ();
for (i = 0; i < vec_len (smm->wrk); i++)
{
svm_msg_q_ring_cfg_t rc[SESSION_MQ_N_RINGS] = {
{evt_q_length, evt_size, 0}
,
- {evt_q_length << 1, 256, 0}
+ {evt_q_length >> 1, 256, 0}
};
cfg->consumer_pid = 0;
cfg->n_rings = 2;
if (smm->evt_qs_use_memfd_seg)
ssvm_pop_heap (oldheap);
else
- svm_pop_heap (oldheap);
+ vl_msg_pop_heap (oldheap);
}
ssvm_private_t *
-session_manager_get_evt_q_segment (void)
+session_main_get_evt_q_segment (void)
{
- session_manager_main_t *smm = &session_manager_main;
+ session_main_t *smm = &session_main;
if (smm->evt_qs_use_memfd_seg)
return &smm->evt_qs_segment;
return 0;
}
+u64
+session_segment_handle (session_t * s)
+{
+ 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* */
static session_fifo_rx_fn *session_tx_fns[TRANSPORT_TX_N_FNS] = {
session_tx_fifo_peek_and_snd,
};
/* *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;
/* *INDENT-ON* */
smm->session_type_to_next[session_type] = next_index;
- smm->session_tx_fns[session_type] = session_tx_fns[vft->tx_type];
+ smm->session_tx_fns[session_type] =
+ session_tx_fns[vft->transport_options.tx_type];
}
-transport_connection_t *
-session_get_transport (stream_session_t * s)
+transport_proto_t
+session_add_transport_proto (void)
{
- transport_proto_t tp;
- if (s->session_state != SESSION_STATE_LISTENING)
+ 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++)
{
- tp = session_get_transport_proto (s);
- return tp_vfts[tp].get_connection (s->connection_index,
- s->thread_index);
+ wrk = session_main_get_worker (thread);
+ vec_validate (wrk->session_to_enqueue, smm->last_transport_proto_type);
}
- return 0;
+
+ return smm->last_transport_proto_type;
}
transport_connection_t *
-listen_session_get_transport (stream_session_t * s)
+session_get_transport (session_t * s)
{
- transport_proto_t tp = session_get_transport_proto (s);
- return tp_vfts[tp].get_listener (s->connection_index);
+ if (s->session_state != SESSION_STATE_LISTENING)
+ return transport_get_connection (session_get_transport_proto (s),
+ s->connection_index, s->thread_index);
+ else
+ return transport_get_listener (session_get_transport_proto (s),
+ s->connection_index);
}
-int
-listen_session_get_local_session_endpoint (stream_session_t * listener,
- session_endpoint_t * sep)
+void
+session_get_endpoint (session_t * s, transport_endpoint_t * tep, u8 is_lcl)
{
- transport_proto_t tp = session_get_transport_proto (listener);
- transport_connection_t *tc;
- tc = tp_vfts[tp].get_listener (listener->connection_index);
- if (!tc)
- {
- clib_warning ("no transport");
- return -1;
- }
+ 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);
+}
- /* 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;
+transport_connection_t *
+listen_session_get_transport (session_t * s)
+{
+ return transport_get_listener (session_get_transport_proto (s),
+ s->connection_index);
}
void
-session_flush_frames_main_thread (vlib_main_t * vm)
+session_queue_run_on_main_thread (vlib_main_t * vm)
{
ASSERT (vlib_get_thread_index () == 0);
vlib_process_signal_event_mt (vm, session_queue_process_node.index,
- SESSION_Q_PROCESS_FLUSH_FRAMES, 0);
+ SESSION_Q_PROCESS_RUN_ON_MAIN, 0);
}
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;
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;
- }
-
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;
+ 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->vm = vlib_mains[i];
+ wrk->last_vlib_time = vlib_time_now (vm);
+ wrk->last_vlib_us_time = wrk->last_vlib_time * CLIB_US_TIME_FREQ;
+ vec_validate (wrk->session_to_enqueue, smm->last_transport_proto_type);
if (num_threads > 1)
clib_rwlock_init (&smm->wrk[i].peekers_rw_locks);
}
-#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);
/* Enable transports */
transport_enable_disable (vm, 1);
- transport_init_tx_pacers_period ();
+ session_debug_init ();
+
return 0;
}
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_node_enable_disable (is_en);
}
}
clib_error_t *
-session_manager_main_init (vlib_main_t * vm)
+session_main_init (vlib_main_t * vm)
{
- session_manager_main_t *smm = &session_manager_main;
+ session_main_t *smm = &session_main;
+
+ smm->is_enabled = 0;
+ smm->session_enable_asap = 0;
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;
smm->session_va_space_size = 128 << 20;
smm->evt_qs_segment_size = 1 << 20;
#endif
- smm->is_enabled = 0;
+
+ smm->last_transport_proto_type = TRANSPORT_PROTO_QUIC;
+
+ return 0;
+}
+
+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_manager_main_init);
+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;
;
else if (unformat (input, "evt_qs_memfd_seg"))
smm->evt_qs_use_memfd_seg = 1;
+ else if (unformat (input, "evt_qs_seg_size %U", unformat_memory_size,
+ &smm->evt_qs_segment_size))
+ ;
+ else if (unformat (input, "enable"))
+ smm->session_enable_asap = 1;
+ else if (unformat (input, "use-app-socket-api"))
+ appns_sapi_enable ();
else
return clib_error_return (0, "unknown input `%U'",
format_unformat_error, input);
Code Review / vpp.git / blobdiff