}
ctx->snd_space = transport_connection_snd_space (ctx->tc,
- wrk->vm->clib_time.
+ vm->clib_time.
last_cpu_time,
ctx->snd_mss);
if (n_bufs)
vlib_buffer_free (vm, wrk->tx_buffers, n_bufs);
session_evt_add_old (wrk, elt);
+ vlib_node_increment_counter (wrk->vm, node->node_index,
+ SESSION_QUEUE_ERROR_NO_BUFFER, 1);
return SESSION_TX_NO_BUFFERS;
}
{
session_main_t *smm = &session_main;
app_worker_t *app_wrk;
+ clib_llist_index_t ei;
void (*fp) (void *);
session_event_t *e;
session_t *s;
- int rv;
+ ei = clib_llist_entry_index (wrk->event_elts, elt);
e = &elt->evt;
+
switch (e->event_type)
{
case SESSION_IO_EVT_TX_FLUSH:
case SESSION_IO_EVT_TX:
- /* Don't try to send more that one frame per dispatch cycle */
- if (*n_tx_packets == VLIB_FRAME_SIZE)
- {
- session_evt_add_postponed (wrk, elt);
- return;
- }
-
s = session_event_get_session (e, thread_index);
if (PREDICT_FALSE (!s))
{
- clib_warning ("session was freed!");
+ clib_warning ("session %u was freed!", e->session_index);
break;
}
CLIB_PREFETCH (s->tx_fifo, 2 * CLIB_CACHE_LINE_BYTES, LOAD);
wrk->ctx.s = s;
/* Spray packets in per session type frames, since they go to
* different nodes */
- rv = (smm->session_tx_fns[s->session_type]) (wrk, node, elt,
- n_tx_packets);
- if (PREDICT_FALSE (rv == SESSION_TX_NO_BUFFERS))
- {
- vlib_node_increment_counter (wrk->vm, node->node_index,
- SESSION_QUEUE_ERROR_NO_BUFFER, 1);
- break;
- }
+ (smm->session_tx_fns[s->session_type]) (wrk, node, elt, n_tx_packets);
break;
case SESSION_IO_EVT_RX:
s = session_event_get_session (e, thread_index);
default:
clib_warning ("unhandled event type %d", e->event_type);
}
+
+ /* Regrab elements in case pool moved */
+ elt = pool_elt_at_index (wrk->event_elts, ei);
+ if (!clib_llist_elt_is_linked (elt, evt_list))
+ session_evt_elt_free (wrk, elt);
}
static uword
session_main_t *smm = vnet_get_session_main ();
u32 thread_index = vm->thread_index, n_to_dequeue;
session_worker_t *wrk = &smm->wrk[thread_index];
- session_evt_elt_t *elt, *new_he, *new_te, *old_he;
- session_evt_elt_t *disconnects_he, *postponed_he;
+ session_evt_elt_t *elt, *ctrl_he, *new_he, *old_he;
svm_msg_q_msg_t _msg, *msg = &_msg;
+ clib_llist_index_t old_ti;
int i, n_tx_packets = 0;
+ session_event_t *evt;
svm_msg_q_t *mq;
SESSION_EVT (SESSION_EVT_DISPATCH_START, wrk);
*/
transport_update_time (wrk->last_vlib_time, thread_index);
- /* Make sure postponed events are handled first */
- new_he = pool_elt_at_index (wrk->event_elts, wrk->new_head);
- new_te = clib_llist_prev (wrk->event_elts, evt_list, new_he);
-
- postponed_he = pool_elt_at_index (wrk->event_elts, wrk->postponed_head);
- clib_llist_splice (wrk->event_elts, evt_list, new_te, postponed_he);
+ /*
+ * Dequeue and handle new events
+ */
/* Try to dequeue what is available. Don't wait for lock.
* XXX: we may need priorities here */
{
for (i = 0; i < n_to_dequeue; i++)
{
- elt = session_evt_elt_alloc (wrk);
svm_msg_q_sub_w_lock (mq, msg);
+ evt = svm_msg_q_msg_data (mq, msg);
+ if (evt->event_type > SESSION_IO_EVT_BUILTIN_TX)
+ elt = session_evt_alloc_ctrl (wrk);
+ else
+ elt = session_evt_alloc_new (wrk);
/* Works because reply messages are smaller than a session evt.
* If we ever need to support bigger messages this needs to be
* fixed */
- clib_memcpy_fast (&elt->evt, svm_msg_q_msg_data (mq, msg),
- sizeof (elt->evt));
+ clib_memcpy_fast (&elt->evt, evt, sizeof (elt->evt));
svm_msg_q_free_msg (mq, msg);
- new_he = pool_elt_at_index (wrk->event_elts, wrk->new_head);
- clib_llist_add_tail (wrk->event_elts, evt_list, elt, new_he);
}
svm_msg_q_unlock (mq);
}
- old_he = pool_elt_at_index (wrk->event_elts, wrk->old_head);
- disconnects_he = pool_elt_at_index (wrk->event_elts, wrk->disconnects_head);
+ /*
+ * Handle control events
+ */
- new_te = clib_llist_prev (wrk->event_elts, evt_list, new_he);
- clib_llist_splice (wrk->event_elts, evt_list, new_te, old_he);
- new_te = clib_llist_prev (wrk->event_elts, evt_list, new_he);
- clib_llist_splice (wrk->event_elts, evt_list, new_te, disconnects_he);
+ ctrl_he = pool_elt_at_index (wrk->event_elts, wrk->ctrl_head);
- while (!clib_llist_is_empty (wrk->event_elts, evt_list, new_he))
+ /* *INDENT-OFF* */
+ clib_llist_foreach_safe (wrk->event_elts, evt_list, ctrl_he, elt, ({
+ clib_llist_remove (wrk->event_elts, evt_list, elt);
+ session_event_dispatch (wrk, node, elt, thread_index, &n_tx_packets);
+ }));
+ /* *INDENT-ON* */
+
+ /*
+ * Handle the new io events.
+ */
+
+ new_he = pool_elt_at_index (wrk->event_elts, wrk->new_head);
+
+ /* *INDENT-OFF* */
+ clib_llist_foreach_safe (wrk->event_elts, evt_list, new_he, elt, ({
+ session_evt_type_t et;
+
+ et = elt->evt.event_type;
+ clib_llist_remove (wrk->event_elts, evt_list, elt);
+
+ /* Postpone tx events if we can't handle them this dispatch cycle */
+ if (n_tx_packets >= VLIB_FRAME_SIZE
+ && (et == SESSION_IO_EVT_TX || et == SESSION_IO_EVT_TX_FLUSH))
+ {
+ clib_llist_add (wrk->event_elts, evt_list, elt, new_he);
+ continue;
+ }
+
+ session_event_dispatch (wrk, node, elt, thread_index, &n_tx_packets);
+ }));
+ /* *INDENT-ON* */
+
+ /*
+ * Handle the old io events
+ */
+
+ old_he = pool_elt_at_index (wrk->event_elts, wrk->old_head);
+ old_ti = clib_llist_prev_index (old_he, evt_list);
+
+ while (!clib_llist_is_empty (wrk->event_elts, evt_list, old_he))
{
clib_llist_index_t ei;
- clib_llist_pop_first (wrk->event_elts, evt_list, elt, new_he);
+ clib_llist_pop_first (wrk->event_elts, evt_list, elt, old_he);
ei = clib_llist_entry_index (wrk->event_elts, elt);
-
session_event_dispatch (wrk, node, elt, thread_index, &n_tx_packets);
- /* Regrab elements in case pool moved */
- elt = pool_elt_at_index (wrk->event_elts, ei);
- if (!clib_llist_elt_is_linked (elt, evt_list))
- session_evt_elt_free (wrk, elt);
-
- new_he = pool_elt_at_index (wrk->event_elts, wrk->new_head);
- }
+ old_he = pool_elt_at_index (wrk->event_elts, wrk->old_head);
+ if (n_tx_packets >= VLIB_FRAME_SIZE || ei == old_ti)
+ break;
+ };
vlib_node_increment_counter (vm, session_queue_node.index,
SESSION_QUEUE_ERROR_TX, n_tx_packets);
/* *INDENT-OFF* */
clib_llist_foreach (wrk->event_elts, evt_list,
- session_evt_old_head (wrk), elt, ({
+ pool_elt_at_index (wrk->event_elts, wrk->old_head),
+ elt, ({
found = session_node_cmp_event (&elt->evt, f);
if (found)
{
Code Review / vpp.git / blobdiff