#undef _
};
-always_inline void
-session_tx_trace_buffer (vlib_main_t * vm, vlib_node_runtime_t * node,
- u32 next_index, vlib_buffer_t * b,
- stream_session_t * s, u32 * n_trace)
+static void
+session_tx_trace_frame (vlib_main_t * vm, vlib_node_runtime_t * node,
+ u32 next_index, u32 * to_next, u16 n_segs,
+ stream_session_t * s, u32 n_trace)
{
session_queue_trace_t *t;
- vlib_trace_buffer (vm, node, next_index, b, 1 /* follow_chain */ );
- vlib_set_trace_count (vm, node, --*n_trace);
- t = vlib_add_trace (vm, node, b, sizeof (*t));
- t->session_index = s->session_index;
- t->server_thread_index = s->thread_index;
+ vlib_buffer_t *b;
+ int i;
+
+ for (i = 0; i < clib_min (n_trace, n_segs); i++)
+ {
+ b = vlib_get_buffer (vm, to_next[i - n_segs]);
+ 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;
+ t->server_thread_index = s->thread_index;
+ }
+ vlib_set_trace_count (vm, node, n_trace - i);
}
always_inline void
session_manager_main_t * smm,
u32 thread_index, u16 * n_bufs, u32 wanted)
{
- u32 bufs_alloc = 0, bufs_now;
- vec_validate_aligned (smm->tx_buffers[thread_index], *n_bufs + wanted - 1,
+ u32 n_alloc;
+ vec_validate_aligned (smm->tx_buffers[thread_index], wanted - 1,
CLIB_CACHE_LINE_BYTES);
- do
- {
- bufs_now =
- vlib_buffer_alloc (vm,
- &smm->tx_buffers[thread_index][*n_bufs +
- bufs_alloc],
- wanted - bufs_alloc);
- bufs_alloc += bufs_now;
- }
- while (bufs_now > 0 && ((bufs_alloc + *n_bufs < wanted)));
-
- *n_bufs += bufs_alloc;
+ n_alloc = vlib_buffer_alloc (vm, &smm->tx_buffers[thread_index][*n_bufs],
+ wanted - *n_bufs);
+ *n_bufs += n_alloc;
_vec_len (smm->tx_buffers[thread_index]) = *n_bufs;
- return bufs_alloc;
+ return n_alloc;
}
always_inline void
b->error = 0;
b->flags = VNET_BUFFER_F_LOCALLY_ORIGINATED;
b->current_data = 0;
- b->total_length_not_including_first_buffer = 0;
data0 = vlib_buffer_make_headroom (b, MAX_HDRS_LEN);
len_to_deq = clib_min (ctx->left_to_snd, ctx->deq_per_first_buf);
session_tx_fifo_chain_tail (vm, ctx, b, n_bufs, peek_data);
/* *INDENT-OFF* */
- SESSION_EVT_DBG(SESSION_EVT_DEQ, s, ({
- ed->data[0] = e->event_type;
- ed->data[1] = max_dequeue;
+ SESSION_EVT_DBG(SESSION_EVT_DEQ, ctx->s, ({
+ ed->data[0] = FIFO_EVENT_APP_TX;
+ ed->data[1] = ctx->max_dequeue;
ed->data[2] = len_to_deq;
- ed->data[3] = left_to_snd;
+ ed->data[3] = ctx->left_to_snd;
}));
/* *INDENT-ON* */
}
* session is not ready or closed */
if (s->session_state < SESSION_STATE_READY)
return 1;
+ if (s->session_state == SESSION_STATE_CLOSED)
+ return 2;
}
return 0;
}
always_inline void
session_tx_set_dequeue_params (vlib_main_t * vm, session_tx_context_t * ctx,
- u8 peek_data)
+ u32 max_segs, u8 peek_data)
{
u32 n_bytes_per_buf, n_bytes_per_seg;
ctx->max_dequeue = svm_fifo_max_dequeue (ctx->s->server_tx_fifo);
ctx->max_len_to_snd = ctx->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);
+ 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;
+ }
+
n_bytes_per_buf = vlib_buffer_free_list_buffer_size (vm,
VLIB_BUFFER_DEFAULT_FREE_LIST_INDEX);
ASSERT (n_bytes_per_buf > MAX_HDRS_LEN);
n_bytes_per_seg = MAX_HDRS_LEN + ctx->snd_mss;
- ctx->n_bufs_per_seg = ceil ((double) n_bytes_per_seg / n_bytes_per_buf);
+ 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,
n_bytes_per_buf - MAX_HDRS_LEN);
stream_session_t * s, int *n_tx_packets,
u8 peek_data)
{
- u32 next_index, next0, next1, next2, next3, *to_next, n_left_to_next;
- u32 n_trace = vlib_get_trace_count (vm, node), n_packets = 0, pbi;
- u32 n_bufs_per_frame, thread_index = s->thread_index;
+ u32 next_index, next0, next1, *to_next, n_left_to_next;
+ u32 n_trace = vlib_get_trace_count (vm, node), n_bufs_needed = 0;
+ u32 thread_index = s->thread_index, n_left, pbi;
session_manager_main_t *smm = &session_manager_main;
session_tx_context_t *ctx = &smm->ctx[thread_index];
transport_proto_t tp;
vlib_buffer_t *pb;
- u16 n_bufs;
+ u16 n_bufs, rv;
- if (PREDICT_FALSE (session_tx_not_ready (s, peek_data)))
+ if (PREDICT_FALSE ((rv = session_tx_not_ready (s, peek_data))))
{
- vec_add1 (smm->pending_event_vector[thread_index], *e);
+ if (rv < 2)
+ vec_add1 (smm->pending_event_vector[thread_index], *e);
return 0;
}
next_index = smm->session_type_to_next[s->session_type];
- next0 = next1 = next2 = next3 = next_index;
+ next0 = next1 = next_index;
tp = session_get_transport_proto (s);
ctx->s = s;
svm_fifo_unset_event (s->server_tx_fifo);
/* Check how much we can pull. */
- session_tx_set_dequeue_params (vm, ctx, peek_data);
+ session_tx_set_dequeue_params (vm, ctx, VLIB_FRAME_SIZE - *n_tx_packets,
+ peek_data);
+
if (PREDICT_FALSE (!ctx->max_len_to_snd))
return 0;
n_bufs = vec_len (smm->tx_buffers[thread_index]);
- ctx->left_to_snd = ctx->max_len_to_snd;
+ n_bufs_needed = ctx->n_segs_per_evt * ctx->n_bufs_per_seg;
/*
* Make sure we have at least one full frame of buffers ready
*/
- n_bufs_per_frame = ctx->n_bufs_per_seg * VLIB_FRAME_SIZE;
- if (n_bufs < n_bufs_per_frame)
+ if (n_bufs < n_bufs_needed)
{
session_output_try_get_buffers (vm, smm, thread_index, &n_bufs,
- n_bufs_per_frame);
- if (PREDICT_FALSE (n_bufs < n_bufs_per_frame))
+ ctx->n_bufs_per_seg * VLIB_FRAME_SIZE);
+ if (PREDICT_FALSE (n_bufs < n_bufs_needed))
{
vec_add1 (smm->pending_event_vector[thread_index], *e);
return -1;
* Write until we fill up a frame
*/
vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
- while (ctx->left_to_snd && n_left_to_next)
+ if (PREDICT_FALSE (ctx->n_segs_per_evt > n_left_to_next))
{
- while (ctx->left_to_snd > 3 * ctx->snd_mss && n_left_to_next >= 4)
- {
- vlib_buffer_t *b0, *b1;
- u32 bi0, bi1;
+ ctx->n_segs_per_evt = n_left_to_next;
+ ctx->max_len_to_snd = ctx->snd_mss * n_left_to_next;
+ }
+ ctx->left_to_snd = ctx->max_len_to_snd;
+ n_left = ctx->n_segs_per_evt;
- pbi = smm->tx_buffers[thread_index][n_bufs - 3];
- pb = vlib_get_buffer (vm, pbi);
- vlib_prefetch_buffer_header (pb, STORE);
- pbi = smm->tx_buffers[thread_index][n_bufs - 4];
- pb = vlib_get_buffer (vm, pbi);
- vlib_prefetch_buffer_header (pb, STORE);
+ while (n_left >= 4)
+ {
+ vlib_buffer_t *b0, *b1;
+ u32 bi0, bi1;
- to_next[0] = bi0 = smm->tx_buffers[thread_index][--n_bufs];
- to_next[1] = bi1 = smm->tx_buffers[thread_index][--n_bufs];
+ pbi = smm->tx_buffers[thread_index][n_bufs - 3];
+ pb = vlib_get_buffer (vm, pbi);
+ vlib_prefetch_buffer_header (pb, STORE);
+ pbi = smm->tx_buffers[thread_index][n_bufs - 4];
+ pb = vlib_get_buffer (vm, pbi);
+ vlib_prefetch_buffer_header (pb, STORE);
- b0 = vlib_get_buffer (vm, bi0);
- b1 = vlib_get_buffer (vm, bi1);
+ to_next[0] = bi0 = smm->tx_buffers[thread_index][--n_bufs];
+ to_next[1] = bi1 = smm->tx_buffers[thread_index][--n_bufs];
- session_tx_fill_buffer (vm, ctx, b0, &n_bufs, peek_data);
- session_tx_fill_buffer (vm, ctx, b1, &n_bufs, peek_data);
+ b0 = vlib_get_buffer (vm, bi0);
+ b1 = vlib_get_buffer (vm, bi1);
- ctx->transport_vft->push_header (ctx->tc, b0);
- ctx->transport_vft->push_header (ctx->tc, b1);
+ session_tx_fill_buffer (vm, ctx, b0, &n_bufs, peek_data);
+ session_tx_fill_buffer (vm, ctx, b1, &n_bufs, peek_data);
- to_next += 2;
- n_left_to_next -= 2;
- n_packets += 2;
+ ctx->transport_vft->push_header (ctx->tc, b0);
+ ctx->transport_vft->push_header (ctx->tc, b1);
- VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b0);
- VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b1);
+ to_next += 2;
+ n_left_to_next -= 2;
+ n_left -= 2;
- if (PREDICT_FALSE (n_trace > 0))
- {
- session_tx_trace_buffer (vm, node, next_index, b0, s, &n_trace);
- if (n_trace)
- session_tx_trace_buffer (vm, node, next_index, b1, s,
- &n_trace);
- }
+ VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b0);
+ VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b1);
- vlib_validate_buffer_enqueue_x2 (vm, node, next_index, to_next,
- n_left_to_next, bi0, bi1,
- next0, next1);
- }
- while (ctx->left_to_snd && n_left_to_next)
- {
- vlib_buffer_t *b0;
- u32 bi0;
+ vlib_validate_buffer_enqueue_x2 (vm, node, next_index, to_next,
+ n_left_to_next, bi0, bi1, next0,
+ next1);
+ }
+ while (n_left)
+ {
+ vlib_buffer_t *b0;
+ u32 bi0;
- ASSERT (n_bufs >= 1);
- to_next[0] = bi0 = smm->tx_buffers[thread_index][--n_bufs];
- b0 = vlib_get_buffer (vm, bi0);
- session_tx_fill_buffer (vm, ctx, b0, &n_bufs, peek_data);
+ ASSERT (n_bufs >= 1);
+ to_next[0] = bi0 = smm->tx_buffers[thread_index][--n_bufs];
+ b0 = vlib_get_buffer (vm, bi0);
+ session_tx_fill_buffer (vm, ctx, b0, &n_bufs, peek_data);
- /* Ask transport to push header after current_length and
- * total_length_not_including_first_buffer are updated */
- ctx->transport_vft->push_header (ctx->tc, b0);
+ /* Ask transport to push header after current_length and
+ * total_length_not_including_first_buffer are updated */
+ ctx->transport_vft->push_header (ctx->tc, b0);
- to_next += 1;
- n_left_to_next -= 1;
- n_packets += 1;
+ to_next += 1;
+ n_left_to_next -= 1;
+ n_left -= 1;
- VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b0);
- if (PREDICT_FALSE (n_trace > 0))
- session_tx_trace_buffer (vm, node, next_index, b0, s, &n_trace);
+ VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b0);
- vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
- n_left_to_next, bi0, next0);
- }
+ vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
+ n_left_to_next, bi0, next0);
}
+
+ if (PREDICT_FALSE (n_trace > 0))
+ session_tx_trace_frame (vm, node, next_index, to_next,
+ ctx->n_segs_per_evt, s, n_trace);
+
_vec_len (smm->tx_buffers[thread_index]) = n_bufs;
- *n_tx_packets += n_packets;
+ *n_tx_packets += ctx->n_segs_per_evt;
vlib_put_next_frame (vm, node, next_index, n_left_to_next);
/* If we couldn't dequeue all bytes mark as partially read */
+ ASSERT (ctx->left_to_snd == 0);
if (ctx->max_len_to_snd < ctx->max_dequeue)
if (svm_fifo_set_event (s->server_tx_fifo))
vec_add1 (smm->pending_event_vector[thread_index], *e);
vlib_frame_t * frame)
{
session_manager_main_t *smm = vnet_get_session_manager_main ();
- session_fifo_event_t *my_pending_event_vector, *pending_disconnects, *e;
+ session_fifo_event_t *my_pending_event_vector, *e;
session_fifo_event_t *my_fifo_events;
u32 n_to_dequeue, n_events;
svm_queue_t *q;
application_t *app;
int n_tx_packets = 0;
- u32 my_thread_index = vm->thread_index;
+ u32 thread_index = vm->thread_index;
int i, rv;
f64 now = vlib_time_now (vm);
void (*fp) (void *);
- SESSION_EVT_DBG (SESSION_EVT_POLL_GAP_TRACK, smm, my_thread_index);
+ SESSION_EVT_DBG (SESSION_EVT_POLL_GAP_TRACK, smm, thread_index);
/*
* Update transport time
*/
- transport_update_time (now, my_thread_index);
+ transport_update_time (now, thread_index);
/*
* Get vpp queue events
*/
- q = smm->vpp_event_queues[my_thread_index];
+ q = smm->vpp_event_queues[thread_index];
if (PREDICT_FALSE (q == 0))
return 0;
- my_fifo_events = smm->free_event_vector[my_thread_index];
+ my_fifo_events = smm->free_event_vector[thread_index];
/* min number of events we can dequeue without blocking */
n_to_dequeue = q->cursize;
- my_pending_event_vector = smm->pending_event_vector[my_thread_index];
- pending_disconnects = smm->pending_disconnects[my_thread_index];
+ my_pending_event_vector = smm->pending_event_vector[thread_index];
if (!n_to_dequeue && !vec_len (my_pending_event_vector)
- && !vec_len (pending_disconnects))
+ && !vec_len (smm->pending_disconnects[thread_index]))
return 0;
SESSION_EVT_DBG (SESSION_EVT_DEQ_NODE, 0);
pthread_mutex_unlock (&q->mutex);
vec_append (my_fifo_events, my_pending_event_vector);
- vec_append (my_fifo_events, smm->pending_disconnects[my_thread_index]);
+ vec_append (my_fifo_events, smm->pending_disconnects[thread_index]);
_vec_len (my_pending_event_vector) = 0;
- smm->pending_event_vector[my_thread_index] = my_pending_event_vector;
- _vec_len (smm->pending_disconnects[my_thread_index]) = 0;
+ smm->pending_event_vector[thread_index] = my_pending_event_vector;
+ _vec_len (smm->pending_disconnects[thread_index]) = 0;
skip_dequeue:
n_events = vec_len (my_fifo_events);
session_fifo_event_t *e0;
e0 = &my_fifo_events[i];
-
switch (e0->event_type)
{
case FIFO_EVENT_APP_TX:
- s0 = session_event_get_session (e0, my_thread_index);
+ if (n_tx_packets == VLIB_FRAME_SIZE)
+ {
+ vec_add1 (smm->pending_event_vector[thread_index], *e0);
+ break;
+ }
+ s0 = session_event_get_session (e0, thread_index);
if (PREDICT_FALSE (!s0))
{
clib_warning ("It's dead, Jim!");
continue;
}
+
/* Spray packets in per session type frames, since they go to
* different nodes */
rv = (smm->session_tx_fns[s0->session_type]) (vm, node, e0, s0,
}
break;
case FIFO_EVENT_DISCONNECT:
- /* Make sure disconnects run after the pending list is drained */
+ /* Make sure stream disconnects run after the pending list is
+ * drained */
s0 = session_get_from_handle (e0->session_handle);
- if (!e0->postponed || svm_fifo_max_dequeue (s0->server_tx_fifo))
+ if (!e0->postponed)
{
e0->postponed = 1;
- vec_add1 (smm->pending_disconnects[my_thread_index], *e0);
+ vec_add1 (smm->pending_disconnects[thread_index], *e0);
continue;
}
+ /* If tx queue is still not empty, wait */
+ if (svm_fifo_max_dequeue (s0->server_tx_fifo))
+ {
+ vec_add1 (smm->pending_disconnects[thread_index], *e0);
+ continue;
+ }
+
stream_session_disconnect_transport (s0);
break;
case FIFO_EVENT_BUILTIN_RX:
- s0 = session_event_get_session (e0, my_thread_index);
+ s0 = session_event_get_session (e0, thread_index);
if (PREDICT_FALSE (!s0))
continue;
svm_fifo_unset_event (s0->server_rx_fifo);
}
_vec_len (my_fifo_events) = 0;
- smm->free_event_vector[my_thread_index] = my_fifo_events;
+ smm->free_event_vector[thread_index] = my_fifo_events;
vlib_node_increment_counter (vm, session_queue_node.index,
SESSION_QUEUE_ERROR_TX, n_tx_packets);
- SESSION_EVT_DBG (SESSION_EVT_DEQ_NODE, 1);
+ SESSION_EVT_DBG (SESSION_EVT_DISPATCH_END, smm, thread_index);
return n_tx_packets;
}
VLIB_MAIN_LOOP_EXIT_FUNCTION (session_queue_exit);
+static uword
+session_queue_process (vlib_main_t * vm, vlib_node_runtime_t * rt,
+ vlib_frame_t * f)
+{
+ f64 now, timeout = 1.0;
+ uword *event_data = 0;
+ uword event_type;
+
+ while (1)
+ {
+ vlib_process_wait_for_event_or_clock (vm, timeout);
+ now = vlib_time_now (vm);
+ event_type = vlib_process_get_events (vm, (uword **) & event_data);
+
+ switch (event_type)
+ {
+ case SESSION_Q_PROCESS_FLUSH_FRAMES:
+ /* Flush the frames by updating all transports times */
+ transport_update_time (now, 0);
+ break;
+ case SESSION_Q_PROCESS_STOP:
+ timeout = 100000.0;
+ break;
+ case ~0:
+ /* Timed out. Update time for all transports to trigger all
+ * outstanding retransmits. */
+ transport_update_time (now, 0);
+ break;
+ }
+ vec_reset_length (event_data);
+ }
+ return 0;
+}
+
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (session_queue_process_node) =
+{
+ .function = session_queue_process,
+ .type = VLIB_NODE_TYPE_PROCESS,
+ .name = "session-queue-process",
+ .state = VLIB_NODE_STATE_DISABLED,
+};
+/* *INDENT-ON* */
+
+
/*
* fd.io coding-style-patch-verification: ON
*
Code Review / vpp.git / blobdiff