#include <vnet/session/session_debug.h>
#include <svm/queue.h>
-static void session_mq_accepted_reply_handler (void *data);
+#define app_check_thread_and_barrier(_fn, _arg) \
+ if (!vlib_thread_is_main_w_barrier ()) \
+ { \
+ vlib_rpc_call_main_thread (_fn, (u8 *) _arg, sizeof(*_arg)); \
+ return; \
+ }
static void
-accepted_notify_cb (void *data, u32 data_len)
+session_mq_listen_handler (void *data)
{
- session_mq_accepted_reply_handler (data);
+ session_listen_msg_t *mp = (session_listen_msg_t *) data;
+ vnet_listen_args_t _a, *a = &_a;
+ app_worker_t *app_wrk;
+ application_t *app;
+ int rv;
+
+ app_check_thread_and_barrier (session_mq_listen_handler, mp);
+
+ app = application_lookup (mp->client_index);
+ if (!app)
+ return;
+
+ clib_memset (a, 0, sizeof (*a));
+ a->sep.is_ip4 = mp->is_ip4;
+ clib_memcpy_fast (&a->sep.ip, &mp->ip, sizeof (mp->ip));
+ a->sep.port = mp->port;
+ a->sep.fib_index = mp->vrf;
+ a->sep.sw_if_index = ENDPOINT_INVALID_INDEX;
+ a->sep.transport_proto = mp->proto;
+ a->sep_ext.ckpair_index = mp->ckpair_index;
+ a->sep_ext.crypto_engine = mp->crypto_engine;
+ a->app_index = app->app_index;
+ a->wrk_map_index = mp->wrk_index;
+
+ if ((rv = vnet_listen (a)))
+ clib_warning ("listen returned: %d", rv);
+
+ app_wrk = application_get_worker (app, mp->wrk_index);
+ mq_send_session_bound_cb (app_wrk->wrk_index, mp->context, a->handle, rv);
+ return;
+}
+
+static void
+session_mq_listen_uri_handler (void *data)
+{
+ session_listen_uri_msg_t *mp = (session_listen_uri_msg_t *) data;
+ vnet_listen_args_t _a, *a = &_a;
+ app_worker_t *app_wrk;
+ application_t *app;
+ int rv;
+
+ app_check_thread_and_barrier (session_mq_listen_uri_handler, mp);
+
+ app = application_lookup (mp->client_index);
+ if (!app)
+ return;
+
+ clib_memset (a, 0, sizeof (*a));
+ a->uri = (char *) mp->uri;
+ a->app_index = app->app_index;
+ rv = vnet_bind_uri (a);
+
+ app_wrk = application_get_worker (app, 0);
+ mq_send_session_bound_cb (app_wrk->wrk_index, mp->context, a->handle, rv);
+}
+
+static void
+session_mq_connect_handler (void *data)
+{
+ session_connect_msg_t *mp = (session_connect_msg_t *) data;
+ vnet_connect_args_t _a, *a = &_a;
+ app_worker_t *app_wrk;
+ application_t *app;
+ int rv;
+
+ app_check_thread_and_barrier (session_mq_connect_handler, mp);
+
+ app = application_lookup (mp->client_index);
+ if (!app)
+ return;
+
+ clib_memset (a, 0, sizeof (*a));
+ a->sep.is_ip4 = mp->is_ip4;
+ clib_memcpy_fast (&a->sep.ip, &mp->ip, sizeof (mp->ip));
+ a->sep.port = mp->port;
+ a->sep.transport_proto = mp->proto;
+ a->sep.peer.fib_index = mp->vrf;
+ clib_memcpy_fast (&a->sep.peer.ip, &mp->lcl_ip, sizeof (mp->lcl_ip));
+ a->sep.peer.sw_if_index = ENDPOINT_INVALID_INDEX;
+ 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);
+ clib_memcpy_fast (a->sep_ext.hostname, mp->hostname, mp->hostname_len);
+ }
+ a->api_context = mp->context;
+ a->app_index = app->app_index;
+ a->wrk_map_index = mp->wrk_index;
+
+ if ((rv = vnet_connect (a)))
+ {
+ clib_warning ("connect returned: %U", format_vnet_api_errno, rv);
+ app_wrk = application_get_worker (app, mp->wrk_index);
+ mq_send_session_connected_cb (app_wrk->wrk_index, mp->context, 0,
+ /* is_fail */ 1);
+ }
+
+ vec_free (a->sep_ext.hostname);
+}
+
+static void
+session_mq_connect_uri_handler (void *data)
+{
+ session_connect_uri_msg_t *mp = (session_connect_uri_msg_t *) data;
+ vnet_connect_args_t _a, *a = &_a;
+ app_worker_t *app_wrk;
+ application_t *app;
+ int rv;
+
+ app_check_thread_and_barrier (session_mq_connect_uri_handler, mp);
+
+ app = application_lookup (mp->client_index);
+ if (!app)
+ return;
+
+ clib_memset (a, 0, sizeof (*a));
+ a->uri = (char *) mp->uri;
+ a->api_context = mp->context;
+ a->app_index = app->app_index;
+ if ((rv = vnet_connect_uri (a)))
+ {
+ clib_warning ("connect_uri returned: %d", rv);
+ app_wrk = application_get_worker (app, 0 /* default wrk only */ );
+ mq_send_session_connected_cb (app_wrk->wrk_index, mp->context, 0,
+ /* is_fail */ 1);
+ }
+}
+
+static void
+session_mq_disconnect_handler (void *data)
+{
+ session_disconnect_msg_t *mp = (session_disconnect_msg_t *) data;
+ vnet_disconnect_args_t _a, *a = &_a;
+ application_t *app;
+
+ app = application_lookup (mp->client_index);
+ if (!app)
+ return;
+
+ a->app_index = app->app_index;
+ a->handle = mp->handle;
+ vnet_disconnect_session (a);
+}
+
+static void
+app_mq_detach_handler (void *data)
+{
+ session_app_detach_msg_t *mp = (session_app_detach_msg_t *) data;
+ vnet_app_detach_args_t _a, *a = &_a;
+ application_t *app;
+
+ app_check_thread_and_barrier (app_mq_detach_handler, mp);
+
+ app = application_lookup (mp->client_index);
+ if (!app)
+ return;
+
+ a->app_index = app->app_index;
+ a->api_client_index = mp->client_index;
+ vnet_application_detach (a);
+}
+
+static void
+session_mq_unlisten_handler (void *data)
+{
+ session_unlisten_msg_t *mp = (session_unlisten_msg_t *) data;
+ vnet_unlisten_args_t _a, *a = &_a;
+ app_worker_t *app_wrk;
+ application_t *app;
+ int rv;
+
+ app_check_thread_and_barrier (session_mq_unlisten_handler, mp);
+
+ app = application_lookup (mp->client_index);
+ if (!app)
+ return;
+
+ clib_memset (a, 0, sizeof (*a));
+ a->app_index = app->app_index;
+ a->handle = mp->handle;
+ a->wrk_map_index = mp->wrk_index;
+ if ((rv = vnet_unlisten (a)))
+ clib_warning ("unlisten returned: %d", rv);
+
+ app_wrk = application_get_worker (app, a->wrk_map_index);
+ if (!app_wrk)
+ return;
+
+ mq_send_unlisten_reply (app_wrk, mp->handle, mp->context, rv);
}
static void
if (vlib_num_workers () && vlib_get_thread_index () != 0
&& session_thread_from_handle (mp->handle) == 0)
{
- vl_api_rpc_call_main_thread (accepted_notify_cb, data,
- sizeof (session_accepted_reply_msg_t));
+ vlib_rpc_call_main_thread (session_mq_accepted_reply_handler,
+ (u8 *) mp, sizeof (*mp));
return;
}
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);
if (!app_wrk || app_wrk->app_index != app->app_index)
{
- clib_warning ("App % does not own handle 0x%lx!", app->app_index,
+ clib_warning ("App %u does not own handle 0x%lx!", app->app_index,
mp->handle);
return;
}
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)
{
+ if (PREDICT_TRUE (s->session_state == SESSION_STATE_READY))
+ return 0;
/* Can retransmit for closed sessions but can't send new data if
* session is not ready or closed */
- if (s->session_state < SESSION_STATE_READY)
+ else if (s->session_state < SESSION_STATE_READY)
return 1;
- if (s->session_state >= SESSION_STATE_TRANSPORT_CLOSED)
- return 2;
+ else if (s->session_state >= SESSION_STATE_TRANSPORT_CLOSED)
+ {
+ /* Allow closed transports to still send custom packets.
+ * For instance, tcp may want to send acks in time-wait. */
+ if (s->session_state != SESSION_STATE_TRANSPORT_DELETED
+ && (s->flags & SESSION_F_CUSTOM_TX))
+ return 0;
+ return 2;
+ }
}
return 0;
}
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,
session_evt_elt_t * elt,
int *n_tx_packets, u8 peek_data)
{
- u32 next_index, next0, next1, *to_next, n_left_to_next, max_burst;
- u32 n_trace, n_bufs_needed = 0, n_left, pbi;
+ u32 n_trace, n_bufs_needed = 0, n_left, pbi, next_index, max_burst;
session_tx_context_t *ctx = &wrk->ctx;
session_main_t *smm = &session_main;
session_event_t *e = &elt->evt;
}
next_index = smm->session_type_to_next[ctx->s->session_type];
- next0 = next1 = next_index;
max_burst = VLIB_FRAME_SIZE - *n_tx_packets;
tp = session_get_transport_proto (ctx->s);
ctx->transport_vft = transport_protocol_get_vft (tp);
ctx->tc = session_tx_get_transport (ctx, peek_data);
- ctx->snd_mss = ctx->transport_vft->send_mss (ctx->tc);
if (PREDICT_FALSE (e->event_type == SESSION_IO_EVT_TX_FLUSH))
{
if (ctx->transport_vft->flush_data)
ctx->transport_vft->flush_data (ctx->tc);
+ e->event_type = SESSION_IO_EVT_TX;
}
if (ctx->s->flags & SESSION_F_CUSTOM_TX)
ctx->s->flags &= ~SESSION_F_CUSTOM_TX;
n_custom_tx = ctx->transport_vft->custom_tx (ctx->tc, max_burst);
*n_tx_packets += n_custom_tx;
+ if (PREDICT_FALSE
+ (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_space = transport_connection_snd_space (ctx->tc,
- vm->clib_time.
- last_cpu_time,
- ctx->snd_mss);
+ transport_connection_snd_params (ctx->tc, &ctx->sp);
- if (ctx->snd_space == 0 || ctx->snd_mss == 0)
+ 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;
}
- /* Allow enqueuing of a new event */
- svm_fifo_unset_event (ctx->s->tx_fifo);
+ if (transport_connection_is_tx_paced (ctx->tc))
+ {
+ 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;
+ }
/* 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))
- return SESSION_TX_NO_DATA;
+ {
+ transport_connection_tx_pacer_reset_bucket (ctx->tc, 0);
+ session_tx_maybe_reschedule (wrk, ctx, elt);
+ return SESSION_TX_NO_DATA;
+ }
n_bufs_needed = ctx->n_segs_per_evt * ctx->n_bufs_per_seg;
vec_validate_aligned (wrk->tx_buffers, n_bufs_needed - 1,
{
if (n_bufs)
vlib_buffer_free (vm, wrk->tx_buffers, n_bufs);
- session_evt_add_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;
}
- /*
- * Write until we fill up a frame
- */
- vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
- if (PREDICT_FALSE (ctx->n_segs_per_evt > n_left_to_next))
- {
- 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;
pb = vlib_get_buffer (vm, pbi);
vlib_prefetch_buffer_header (pb, STORE);
- to_next[0] = bi0 = wrk->tx_buffers[--n_bufs];
- to_next[1] = bi1 = wrk->tx_buffers[--n_bufs];
+ bi0 = wrk->tx_buffers[--n_bufs];
+ bi1 = wrk->tx_buffers[--n_bufs];
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);
- to_next += 2;
- n_left_to_next -= 2;
n_left -= 2;
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);
+ vec_add1 (wrk->pending_tx_buffers, bi0);
+ vec_add1 (wrk->pending_tx_buffers, bi1);
+ vec_add1 (wrk->pending_tx_nexts, next_index);
+ vec_add1 (wrk->pending_tx_nexts, next_index);
}
while (n_left)
{
vlib_prefetch_buffer_header (pb, STORE);
}
- to_next[0] = bi0 = wrk->tx_buffers[--n_bufs];
+ bi0 = wrk->tx_buffers[--n_bufs];
b0 = vlib_get_buffer (vm, bi0);
session_tx_fill_buffer (vm, ctx, b0, &n_bufs, peek_data);
* 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_left -= 1;
VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b0);
- vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
- n_left_to_next, bi0, next0);
+ vec_add1 (wrk->pending_tx_buffers, bi0);
+ vec_add1 (wrk->pending_tx_nexts, next_index);
}
if (PREDICT_FALSE ((n_trace = vlib_get_trace_count (vm, node)) > 0))
- session_tx_trace_frame (vm, node, next_index, to_next,
+ session_tx_trace_frame (vm, node, next_index, wrk->pending_tx_buffers,
ctx->n_segs_per_evt, ctx->s, n_trace);
if (PREDICT_FALSE (n_bufs))
vlib_buffer_free (vm, wrk->tx_buffers, n_bufs);
*n_tx_packets += ctx->n_segs_per_evt;
- transport_connection_update_tx_stats (ctx->tc, ctx->max_len_to_snd);
- vlib_put_next_frame (vm, node, next_index, n_left_to_next);
+ transport_connection_update_tx_bytes (ctx->tc, ctx->max_len_to_snd);
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)
}
always_inline void
-session_event_dispatch (session_worker_t * wrk, vlib_node_runtime_t * node,
- session_evt_elt_t * elt, u32 thread_index,
- int *n_tx_packets)
+session_event_dispatch_ctrl (session_worker_t * wrk, session_evt_elt_t * elt)
+{
+ clib_llist_index_t ei;
+ void (*fp) (void *);
+ session_event_t *e;
+ session_t *s;
+
+ ei = clib_llist_entry_index (wrk->event_elts, elt);
+ e = &elt->evt;
+
+ switch (e->event_type)
+ {
+ case SESSION_CTRL_EVT_RPC:
+ fp = e->rpc_args.fp;
+ (*fp) (e->rpc_args.arg);
+ break;
+ case SESSION_CTRL_EVT_CLOSE:
+ s = session_get_from_handle_if_valid (e->session_handle);
+ if (PREDICT_FALSE (!s))
+ break;
+ session_transport_close (s);
+ break;
+ case SESSION_CTRL_EVT_RESET:
+ s = session_get_from_handle_if_valid (e->session_handle);
+ if (PREDICT_FALSE (!s))
+ break;
+ session_transport_reset (s);
+ break;
+ case SESSION_CTRL_EVT_LISTEN:
+ session_mq_listen_handler (session_evt_ctrl_data (wrk, elt));
+ break;
+ case SESSION_CTRL_EVT_LISTEN_URI:
+ session_mq_listen_uri_handler (session_evt_ctrl_data (wrk, elt));
+ break;
+ case SESSION_CTRL_EVT_UNLISTEN:
+ session_mq_unlisten_handler (session_evt_ctrl_data (wrk, elt));
+ break;
+ case SESSION_CTRL_EVT_CONNECT:
+ session_mq_connect_handler (session_evt_ctrl_data (wrk, elt));
+ break;
+ case SESSION_CTRL_EVT_CONNECT_URI:
+ session_mq_connect_uri_handler (session_evt_ctrl_data (wrk, elt));
+ break;
+ case SESSION_CTRL_EVT_DISCONNECT:
+ session_mq_disconnect_handler (session_evt_ctrl_data (wrk, elt));
+ break;
+ case SESSION_CTRL_EVT_DISCONNECTED:
+ session_mq_disconnected_handler (session_evt_ctrl_data (wrk, elt));
+ break;
+ case SESSION_CTRL_EVT_ACCEPTED_REPLY:
+ session_mq_accepted_reply_handler (session_evt_ctrl_data (wrk, elt));
+ break;
+ case SESSION_CTRL_EVT_DISCONNECTED_REPLY:
+ session_mq_disconnected_reply_handler (session_evt_ctrl_data (wrk,
+ elt));
+ break;
+ case SESSION_CTRL_EVT_RESET_REPLY:
+ session_mq_reset_reply_handler (session_evt_ctrl_data (wrk, elt));
+ break;
+ case SESSION_CTRL_EVT_WORKER_UPDATE:
+ session_mq_worker_update_handler (session_evt_ctrl_data (wrk, elt));
+ break;
+ case SESSION_CTRL_EVT_APP_DETACH:
+ app_mq_detach_handler (session_evt_ctrl_data (wrk, elt));
+ break;
+ 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))
+ {
+ e = &elt->evt;
+ if (e->event_type >= SESSION_CTRL_EVT_BOUND)
+ session_evt_ctrl_data_free (wrk, elt);
+ session_evt_elt_free (wrk, elt);
+ }
+}
+
+always_inline void
+session_event_dispatch_io (session_worker_t * wrk, vlib_node_runtime_t * node,
+ session_evt_elt_t * elt, u32 thread_index,
+ int *n_tx_packets)
{
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;
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
transport_app_rx_evt (session_get_transport_proto (s),
s->connection_index, s->thread_index);
break;
- case SESSION_CTRL_EVT_CLOSE:
- s = session_get_from_handle_if_valid (e->session_handle);
- if (PREDICT_FALSE (!s))
- break;
- session_transport_close (s);
- break;
case SESSION_IO_EVT_BUILTIN_RX:
s = session_event_get_session (e, thread_index);
if (PREDICT_FALSE (!s || s->session_state >= SESSION_STATE_CLOSING))
if (PREDICT_TRUE (s != 0))
session_tx_fifo_dequeue_internal (wrk, node, elt, n_tx_packets);
break;
- case SESSION_CTRL_EVT_RPC:
- fp = e->rpc_args.fp;
- (*fp) (e->rpc_args.arg);
- break;
- case SESSION_CTRL_EVT_DISCONNECTED:
- session_mq_disconnected_handler (e->data);
- break;
- case SESSION_CTRL_EVT_ACCEPTED_REPLY:
- session_mq_accepted_reply_handler (e->data);
- break;
- case SESSION_CTRL_EVT_CONNECTED_REPLY:
- break;
- case SESSION_CTRL_EVT_DISCONNECTED_REPLY:
- session_mq_disconnected_reply_handler (e->data);
- break;
- case SESSION_CTRL_EVT_RESET_REPLY:
- session_mq_reset_reply_handler (e->data);
- break;
- case SESSION_CTRL_EVT_WORKER_UPDATE:
- session_mq_worker_update_handler (e->data);
- break;
default:
clib_warning ("unhandled event type %d", e->event_type);
}
session_evt_elt_free (wrk, elt);
}
+/* *INDENT-OFF* */
+static const u32 session_evt_msg_sizes[] = {
+#define _(symc, sym) \
+ [SESSION_CTRL_EVT_ ## symc] = sizeof (session_ ## sym ##_msg_t),
+ foreach_session_ctrl_evt
+#undef _
+};
+/* *INDENT-ON* */
+
+always_inline void
+session_evt_add_to_list (session_worker_t * wrk, session_event_t * evt)
+{
+ session_evt_elt_t *elt;
+
+ if (evt->event_type >= SESSION_CTRL_EVT_RPC)
+ {
+ elt = session_evt_alloc_ctrl (wrk);
+ if (evt->event_type >= SESSION_CTRL_EVT_BOUND)
+ {
+ elt->evt.ctrl_data_index = session_evt_ctrl_data_alloc (wrk);
+ elt->evt.event_type = evt->event_type;
+ clib_memcpy_fast (session_evt_ctrl_data (wrk, elt), evt->data,
+ session_evt_msg_sizes[evt->event_type]);
+ }
+ else
+ {
+ /* Internal control events fit into io events footprint */
+ clib_memcpy_fast (&elt->evt, evt, sizeof (elt->evt));
+ }
+ }
+ else
+ {
+ elt = session_evt_alloc_new (wrk);
+ clib_memcpy_fast (&elt->evt, evt, sizeof (elt->evt));
+ }
+}
+
+static void
+session_flush_pending_tx_buffers (session_worker_t * wrk,
+ vlib_node_runtime_t * node)
+{
+ vlib_buffer_enqueue_to_next (wrk->vm, node, wrk->pending_tx_buffers,
+ wrk->pending_tx_nexts,
+ vec_len (wrk->pending_tx_nexts));
+ vec_reset_length (wrk->pending_tx_buffers);
+ vec_reset_length (wrk->pending_tx_nexts);
+}
+
static uword
session_queue_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node,
vlib_frame_t * frame)
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;
SESSION_EVT (SESSION_EVT_DISPATCH_START, wrk);
wrk->last_vlib_time = vlib_time_now (vm);
+ wrk->last_vlib_us_time = wrk->last_vlib_time * CLIB_US_TIME_FREQ;
/*
* 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
{
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, evt, sizeof (elt->evt));
+ session_evt_add_to_list (wrk, evt);
svm_msg_q_free_msg (mq, msg);
}
svm_msg_q_unlock (mq);
/* *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);
+ session_event_dispatch_ctrl (wrk, elt);
}));
/* *INDENT-ON* */
*/
new_he = pool_elt_at_index (wrk->event_elts, wrk->new_head);
+ 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 (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
+ * Handle the old io events, if we had any prior to processing the new ones
*/
- 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))
+ if (old_ti != wrk->old_head)
{
- clib_llist_index_t ei;
+ old_he = pool_elt_at_index (wrk->event_elts, wrk->old_head);
+ ei = clib_llist_next_index (old_he, evt_list);
- 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);
+ while (n_tx_packets < VLIB_FRAME_SIZE)
+ {
+ elt = pool_elt_at_index (wrk->event_elts, ei);
+ next_ei = clib_llist_next_index (elt, evt_list);
+ clib_llist_remove (wrk->event_elts, evt_list, elt);
- old_he = pool_elt_at_index (wrk->event_elts, wrk->old_head);
- if (n_tx_packets >= VLIB_FRAME_SIZE || ei == old_ti)
- break;
- };
+ session_event_dispatch_io (wrk, node, elt, thread_index,
+ &n_tx_packets);
+
+ if (ei == old_ti)
+ break;
+
+ ei = next_ei;
+ };
+ }
+
+ if (vec_len (wrk->pending_tx_buffers))
+ session_flush_pending_tx_buffers (wrk, node);
vlib_node_increment_counter (vm, session_queue_node.index,
SESSION_QUEUE_ERROR_TX, n_tx_packets);
VLIB_REGISTER_NODE (session_queue_node) =
{
.function = session_queue_node_fn,
+ .flags = VLIB_NODE_FLAG_TRACE_SUPPORTED,
.name = "session-queue",
.format_trace = format_session_queue_trace,
.type = VLIB_NODE_TYPE_INPUT,
case SESSION_IO_EVT_RX:
case SESSION_IO_EVT_TX:
case SESSION_IO_EVT_BUILTIN_RX:
+ case SESSION_IO_EVT_BUILTIN_TX:
+ case SESSION_IO_EVT_TX_FLUSH:
if (e->session_index == f->master_session_index)
return 1;
break;
found = session_node_cmp_event (e, f);
if (found)
return 1;
- if (++index == mq->q->maxsize)
- index = 0;
+ index = (index + 1) % mq->q->maxsize;
}
/*
* Search pending events vector
/* *INDENT-OFF* */
clib_llist_foreach (wrk->event_elts, evt_list,
- pool_elt_at_index (wrk->event_elts, wrk->old_head),
+ pool_elt_at_index (wrk->event_elts, wrk->new_head),
elt, ({
found = session_node_cmp_event (&elt->evt, f);
if (found)
{
clib_memcpy_fast (e, &elt->evt, sizeof (*e));
- break;
+ goto done;
}
+ }));
+ /* *INDENT-ON* */
+ /* *INDENT-OFF* */
+ clib_llist_foreach (wrk->event_elts, evt_list,
+ pool_elt_at_index (wrk->event_elts, wrk->old_head),
+ elt, ({
+ found = session_node_cmp_event (&elt->evt, f);
+ if (found)
+ {
+ clib_memcpy_fast (e, &elt->evt, sizeof (*e));
+ goto done;
+ }
}));
/* *INDENT-ON* */
+done:
return found;
}
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