a->sep_ext.parent_handle = mp->parent_handle;
a->sep_ext.ckpair_index = mp->ckpair_index;
a->sep_ext.crypto_engine = mp->crypto_engine;
+ a->sep_ext.flags = mp->flags;
if (mp->hostname_len)
{
vec_validate (a->sep_ext.hostname, mp->hostname_len - 1);
session_parse_handle (mp->handle, &index, &thread_index);
s = session_get_if_valid (index, thread_index);
- /* Session was already closed or already cleaned up */
- if (!s || s->session_state != SESSION_STATE_TRANSPORT_CLOSING)
+ /* No session or not the right session */
+ if (!s || s->session_state < SESSION_STATE_TRANSPORT_CLOSING)
return;
app_wrk = app_worker_get (s->app_wrk_index);
CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
session_queue_trace_t *t = va_arg (*args, session_queue_trace_t *);
- s = format (s, "SESSION_QUEUE: session index %d, server thread index %d",
+ s = format (s, "session index %d thread index %d",
t->session_index, t->server_thread_index);
return s;
}
for (i = 0; i < clib_min (n_trace, n_segs); i++)
{
- b = vlib_get_buffer (vm, to_next[i - n_segs]);
+ b = vlib_get_buffer (vm, to_next[i]);
vlib_trace_buffer (vm, node, next_index, b, 1 /* follow_chain */ );
t = vlib_add_trace (vm, node, b, sizeof (*t));
t->session_index = s->session_index;
b->total_length_not_including_first_buffer = 0;
chain_b = b;
- left_from_seg = clib_min (ctx->snd_mss - b->current_length,
+ left_from_seg = clib_min (ctx->sp.snd_mss - b->current_length,
ctx->left_to_snd);
to_deq = left_from_seg;
for (j = 1; j < ctx->n_bufs_per_seg; j++)
if (peek_data)
{
n_bytes_read = svm_fifo_peek (ctx->s->tx_fifo,
- ctx->tx_offset, len_to_deq, data);
- ctx->tx_offset += n_bytes_read;
+ ctx->sp.tx_offset, len_to_deq, data);
+ ctx->sp.tx_offset += n_bytes_read;
}
else
{
if (peek_data)
{
- n_bytes_read = svm_fifo_peek (ctx->s->tx_fifo, ctx->tx_offset,
+ n_bytes_read = svm_fifo_peek (ctx->s->tx_fifo, ctx->sp.tx_offset,
len_to_deq, data0);
ASSERT (n_bytes_read > 0);
/* Keep track of progress locally, transport is also supposed to
* increment it independently when pushing the header */
- ctx->tx_offset += n_bytes_read;
+ ctx->sp.tx_offset += n_bytes_read;
}
else
{
if (peek_data)
{
/* Offset in rx fifo from where to peek data */
- ctx->tx_offset = ctx->transport_vft->tx_fifo_offset (ctx->tc);
- if (PREDICT_FALSE (ctx->tx_offset >= ctx->max_dequeue))
+ if (PREDICT_FALSE (ctx->sp.tx_offset >= ctx->max_dequeue))
{
ctx->max_len_to_snd = 0;
return;
}
- ctx->max_dequeue -= ctx->tx_offset;
+ ctx->max_dequeue -= ctx->sp.tx_offset;
}
else
{
ASSERT (ctx->max_dequeue > 0);
/* Ensure we're not writing more than transport window allows */
- if (ctx->max_dequeue < ctx->snd_space)
+ if (ctx->max_dequeue < ctx->sp.snd_space)
{
/* Constrained by tx queue. Try to send only fully formed segments */
- ctx->max_len_to_snd =
- (ctx->max_dequeue > ctx->snd_mss) ?
- ctx->max_dequeue - ctx->max_dequeue % ctx->snd_mss : ctx->max_dequeue;
+ ctx->max_len_to_snd = (ctx->max_dequeue > ctx->sp.snd_mss) ?
+ (ctx->max_dequeue - (ctx->max_dequeue % ctx->sp.snd_mss)) :
+ ctx->max_dequeue;
/* TODO Nagle ? */
}
else
{
/* Expectation is that snd_space0 is already a multiple of snd_mss */
- ctx->max_len_to_snd = ctx->snd_space;
+ ctx->max_len_to_snd = ctx->sp.snd_space;
}
/* Check if we're tx constrained by the node */
- ctx->n_segs_per_evt = ceil ((f64) ctx->max_len_to_snd / ctx->snd_mss);
+ ctx->n_segs_per_evt = ceil ((f64) ctx->max_len_to_snd / ctx->sp.snd_mss);
if (ctx->n_segs_per_evt > max_segs)
{
ctx->n_segs_per_evt = max_segs;
- ctx->max_len_to_snd = max_segs * ctx->snd_mss;
+ ctx->max_len_to_snd = max_segs * ctx->sp.snd_mss;
}
n_bytes_per_buf = vlib_buffer_get_default_data_size (vm);
ASSERT (n_bytes_per_buf > TRANSPORT_MAX_HDRS_LEN);
- n_bytes_per_seg = TRANSPORT_MAX_HDRS_LEN + ctx->snd_mss;
+ n_bytes_per_seg = TRANSPORT_MAX_HDRS_LEN + ctx->sp.snd_mss;
ctx->n_bufs_per_seg = ceil ((f64) n_bytes_per_seg / n_bytes_per_buf);
- ctx->deq_per_buf = clib_min (ctx->snd_mss, n_bytes_per_buf);
- ctx->deq_per_first_buf = clib_min (ctx->snd_mss,
+ ctx->deq_per_buf = clib_min (ctx->sp.snd_mss, n_bytes_per_buf);
+ ctx->deq_per_first_buf = clib_min (ctx->sp.snd_mss,
n_bytes_per_buf -
TRANSPORT_MAX_HDRS_LEN);
}
+always_inline void
+session_tx_maybe_reschedule (session_worker_t * wrk,
+ session_tx_context_t * ctx,
+ session_evt_elt_t * elt)
+{
+ session_t *s = ctx->s;
+
+ svm_fifo_unset_event (s->tx_fifo);
+ if (svm_fifo_max_dequeue_cons (s->tx_fifo) > ctx->sp.tx_offset)
+ if (svm_fifo_set_event (s->tx_fifo))
+ session_evt_add_head_old (wrk, elt);
+}
+
always_inline int
session_tx_fifo_read_and_snd_i (session_worker_t * wrk,
vlib_node_runtime_t * node,
(ctx->s->session_state >= SESSION_STATE_TRANSPORT_CLOSED))
return SESSION_TX_OK;
max_burst -= n_custom_tx;
- if (!max_burst)
+ if (!max_burst || (ctx->s->flags & SESSION_F_CUSTOM_TX))
{
session_evt_add_old (wrk, elt);
return SESSION_TX_OK;
}
}
- ctx->snd_mss = ctx->transport_vft->send_mss (ctx->tc);
- if (PREDICT_FALSE (ctx->snd_mss == 0))
+ transport_connection_snd_params (ctx->tc, &ctx->sp);
+
+ if (!ctx->sp.snd_space)
{
- session_evt_add_old (wrk, elt);
+ /* If the deschedule flag was set, remove session from scheduler.
+ * Transport is responsible for rescheduling this session. */
+ if (ctx->sp.flags & TRANSPORT_SND_F_DESCHED)
+ transport_connection_deschedule (ctx->tc);
+ /* Request to postpone the session, e.g., zero-wnd and transport
+ * is not currently probing */
+ else if (ctx->sp.flags & TRANSPORT_SND_F_POSTPONE)
+ session_evt_add_old (wrk, elt);
+ /* This flow queue is "empty" so it should be re-evaluated before
+ * the ones that have data to send. */
+ else
+ session_evt_add_head_old (wrk, elt);
+
return SESSION_TX_NO_DATA;
}
- ctx->snd_space = transport_connection_snd_space (ctx->tc, ctx->snd_mss);
-
- /* This flow queue is "empty" so it should be re-evaluated before
- * the ones that have data to send. */
- if (ctx->snd_space == 0)
+ if (transport_connection_is_tx_paced (ctx->tc))
{
- session_evt_add_head_old (wrk, elt);
- return SESSION_TX_NO_DATA;
+ u32 snd_space = transport_connection_tx_pacer_burst (ctx->tc);
+ if (snd_space < TRANSPORT_PACER_MIN_BURST)
+ {
+ session_evt_add_head_old (wrk, elt);
+ return SESSION_TX_NO_DATA;
+ }
+ snd_space = clib_min (ctx->sp.snd_space, snd_space);
+ ctx->sp.snd_space = snd_space >= ctx->sp.snd_mss ?
+ snd_space - snd_space % ctx->sp.snd_mss : snd_space;
}
- /* Allow enqueuing of a new event */
- svm_fifo_unset_event (ctx->s->tx_fifo);
-
/* Check how much we can pull. */
session_tx_set_dequeue_params (vm, ctx, max_burst, peek_data);
if (PREDICT_FALSE (!ctx->max_len_to_snd))
{
- transport_connection_tx_pacer_reset_bucket (ctx->tc);
+ transport_connection_tx_pacer_reset_bucket (ctx->tc, 0);
+ session_tx_maybe_reschedule (wrk, ctx, elt);
return SESSION_TX_NO_DATA;
}
{
if (n_bufs)
vlib_buffer_free (vm, wrk->tx_buffers, n_bufs);
- if (svm_fifo_set_event (ctx->s->tx_fifo))
- session_evt_add_head_old (wrk, elt);
+ session_evt_add_head_old (wrk, elt);
vlib_node_increment_counter (wrk->vm, node->node_index,
SESSION_QUEUE_ERROR_NO_BUFFER, 1);
return SESSION_TX_NO_BUFFERS;
SESSION_EVT (SESSION_EVT_DEQ, ctx->s, ctx->max_len_to_snd, ctx->max_dequeue,
ctx->s->tx_fifo->has_event, wrk->last_vlib_time);
- /* If we couldn't dequeue all bytes mark as partially read */
ASSERT (ctx->left_to_snd == 0);
+
+ /* If we couldn't dequeue all bytes reschedule as old flow. Otherwise,
+ * check if application enqueued more data and reschedule accordingly */
if (ctx->max_len_to_snd < ctx->max_dequeue)
- if (svm_fifo_set_event (ctx->s->tx_fifo))
- session_evt_add_old (wrk, elt);
+ session_evt_add_old (wrk, elt);
+ else
+ session_tx_maybe_reschedule (wrk, ctx, elt);
if (!peek_data
&& ctx->transport_vft->transport_options.tx_type == TRANSPORT_TX_DGRAM)
case SESSION_IO_EVT_TX:
s = session_event_get_session (e, thread_index);
if (PREDICT_FALSE (!s))
- {
- clib_warning ("session %u was freed!", e->session_index);
- break;
- }
+ 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
u32 thread_index = vm->thread_index, n_to_dequeue;
session_worker_t *wrk = &smm->wrk[thread_index];
session_evt_elt_t *elt, *ctrl_he, *new_he, *old_he;
+ clib_llist_index_t ei, next_ei, old_ti;
svm_msg_q_msg_t _msg, *msg = &_msg;
- clib_llist_index_t old_ti;
- int i, n_tx_packets = 0;
+ int i, n_tx_packets;
session_event_t *evt;
svm_msg_q_t *mq;
* Update transport time
*/
transport_update_time (wrk->last_vlib_time, thread_index);
+ n_tx_packets = vec_len (wrk->pending_tx_buffers);
/*
* Dequeue and handle new events
old_he = pool_elt_at_index (wrk->event_elts, wrk->old_head);
old_ti = clib_llist_prev_index (old_he, evt_list);
- /* *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_io (wrk, node, elt, thread_index, &n_tx_packets);
- }));
- /* *INDENT-ON* */
+ ei = clib_llist_next_index (new_he, evt_list);
+ while (ei != wrk->new_head && n_tx_packets < VLIB_FRAME_SIZE)
+ {
+ elt = pool_elt_at_index (wrk->event_elts, ei);
+ ei = clib_llist_next_index (elt, evt_list);
+ clib_llist_remove (wrk->event_elts, evt_list, elt);
+ session_event_dispatch_io (wrk, node, elt, thread_index, &n_tx_packets);
+ }
/*
* Handle the old io events, if we had any prior to processing the new ones
if (old_ti != wrk->old_head)
{
- clib_llist_index_t ei, next_ei;
-
old_he = pool_elt_at_index (wrk->event_elts, wrk->old_head);
ei = clib_llist_next_index (old_he, evt_list);
session_main_t *sm = &session_main;
if (!sm->wrk[0].vpp_event_queue)
return 0;
+ node = vlib_node_get_runtime (vm, session_queue_node.index);
return session_queue_node_fn (vm, node, frame);
}
Code Review / vpp.git / blobdiff