#include <vnet/session/transport.h>
#include <vnet/session/session.h>
#include <vnet/session/application.h>
+#include <vnet/session/application_interface.h>
#include <vnet/session/session_debug.h>
#include <svm/queue.h>
+static void
+session_mq_accepted_reply_handler (void *data)
+{
+ session_accepted_reply_msg_t *mp = (session_accepted_reply_msg_t *) data;
+ vnet_disconnect_args_t _a = { 0 }, *a = &_a;
+ stream_session_state_t old_state;
+ app_worker_t *app_wrk;
+ local_session_t *ls;
+ stream_session_t *s;
+
+ /* Server isn't interested, kill the session */
+ if (mp->retval)
+ {
+ a->app_index = mp->context;
+ a->handle = mp->handle;
+ vnet_disconnect_session (a);
+ return;
+ }
+
+ if (session_handle_is_local (mp->handle))
+ {
+ ls = application_get_local_session_from_handle (mp->handle);
+ if (!ls)
+ {
+ clib_warning ("unknown local handle 0x%lx", mp->handle);
+ return;
+ }
+ app_wrk = app_worker_get (ls->app_wrk_index);
+ if (app_wrk->app_index != mp->context)
+ {
+ clib_warning ("server %u doesn't own local handle 0x%lx",
+ mp->context, mp->handle);
+ return;
+ }
+ if (application_local_session_connect_notify (ls))
+ return;
+ ls->session_state = SESSION_STATE_READY;
+ }
+ else
+ {
+ s = session_get_from_handle_if_valid (mp->handle);
+ if (!s)
+ return;
+
+ app_wrk = app_worker_get (s->app_wrk_index);
+ if (app_wrk->app_index != mp->context)
+ {
+ clib_warning ("app doesn't own session");
+ return;
+ }
+
+ old_state = s->session_state;
+ s->session_state = SESSION_STATE_READY;
+ if (!svm_fifo_is_empty (s->server_rx_fifo))
+ app_worker_lock_and_send_event (app_wrk, s, FIFO_EVENT_APP_RX);
+
+ /* Closed while waiting for app to reply. Resend disconnect */
+ if (old_state >= SESSION_STATE_TRANSPORT_CLOSING)
+ {
+ application_t *app = application_get (app_wrk->app_index);
+ app->cb_fns.session_disconnect_callback (s);
+ s->session_state = old_state;
+ return;
+ }
+ }
+}
+
+static void
+session_mq_reset_reply_handler (void *data)
+{
+ vnet_disconnect_args_t _a = { 0 }, *a = &_a;
+ session_reset_reply_msg_t *mp;
+ app_worker_t *app_wrk;
+ stream_session_t *s;
+ application_t *app;
+ u32 index, thread_index;
+
+ mp = (session_reset_reply_msg_t *) data;
+ app = application_lookup (mp->context);
+ if (!app)
+ 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)
+ 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,
+ mp->handle);
+ return;
+ }
+
+ /* Client objected to resetting the session, log and continue */
+ if (mp->retval)
+ {
+ clib_warning ("client retval %d", mp->retval);
+ return;
+ }
+
+ /* This comes as a response to a reset, transport only waiting for
+ * confirmation to remove connection state, no need to disconnect */
+ a->handle = mp->handle;
+ a->app_index = app->app_index;
+ vnet_disconnect_session (a);
+}
+
+static void
+session_mq_disconnected_handler (void *data)
+{
+ session_disconnected_reply_msg_t *rmp;
+ vnet_disconnect_args_t _a, *a = &_a;
+ svm_msg_q_msg_t _msg, *msg = &_msg;
+ session_disconnected_msg_t *mp;
+ app_worker_t *app_wrk;
+ session_event_t *evt;
+ stream_session_t *s;
+ application_t *app;
+ int rv = 0;
+
+ mp = (session_disconnected_msg_t *) data;
+ if (!(s = session_get_from_handle_if_valid (mp->handle)))
+ {
+ clib_warning ("could not disconnect handle %llu", mp->handle);
+ return;
+ }
+ app_wrk = app_worker_get (s->app_wrk_index);
+ app = application_lookup (mp->client_index);
+ if (!(app_wrk && app && app->app_index == app_wrk->app_index))
+ {
+ clib_warning ("could not disconnect session: %llu app: %u",
+ mp->handle, mp->client_index);
+ return;
+ }
+
+ a->handle = mp->handle;
+ a->app_index = app_wrk->wrk_index;
+ rv = vnet_disconnect_session (a);
+
+ svm_msg_q_lock_and_alloc_msg_w_ring (app_wrk->event_queue,
+ SESSION_MQ_CTRL_EVT_RING,
+ SVM_Q_WAIT, msg);
+ svm_msg_q_unlock (app_wrk->event_queue);
+ evt = svm_msg_q_msg_data (app_wrk->event_queue, msg);
+ clib_memset (evt, 0, sizeof (*evt));
+ evt->event_type = SESSION_CTRL_EVT_DISCONNECTED;
+ rmp = (session_disconnected_reply_msg_t *) evt->data;
+ rmp->handle = mp->handle;
+ rmp->context = mp->context;
+ rmp->retval = rv;
+ svm_msg_q_add (app_wrk->event_queue, msg, SVM_Q_WAIT);
+}
+
+static void
+session_mq_disconnected_reply_handler (void *data)
+{
+ session_disconnected_reply_msg_t *mp;
+ vnet_disconnect_args_t _a, *a = &_a;
+ application_t *app;
+
+ mp = (session_disconnected_reply_msg_t *) data;
+
+ /* Client objected to disconnecting the session, log and continue */
+ if (mp->retval)
+ {
+ clib_warning ("client retval %d", mp->retval);
+ return;
+ }
+
+ /* Disconnect has been confirmed. Confirm close to transport */
+ app = application_lookup (mp->context);
+ if (app)
+ {
+ a->handle = mp->handle;
+ a->app_index = app->app_index;
+ vnet_disconnect_session (a);
+ }
+}
+
vlib_node_registration_t session_queue_node;
typedef struct
return s;
}
-vlib_node_registration_t session_queue_node;
-
#define foreach_session_queue_error \
_(TX, "Packets transmitted") \
_(TIMER, "Timer events") \
#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)
+enum
+{
+ SESSION_TX_NO_BUFFERS = -2,
+ SESSION_TX_NO_DATA,
+ SESSION_TX_OK
+};
+
+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_tx_fifo_chain_tail (vlib_main_t * vm, session_tx_context_t * ctx,
vlib_buffer_t * b, u16 * n_bufs, u8 peek_data)
{
- session_manager_main_t *smm = &session_manager_main;
vlib_buffer_t *chain_b, *prev_b;
u32 chain_bi0, to_deq, left_from_seg;
+ session_manager_worker_t *wrk;
u16 len_to_deq, n_bytes_read;
u8 *data, j;
+ wrk = session_manager_get_worker (ctx->s->thread_index);
b->flags |= VLIB_BUFFER_TOTAL_LENGTH_VALID;
b->total_length_not_including_first_buffer = 0;
len_to_deq = clib_min (to_deq, ctx->deq_per_buf);
*n_bufs -= 1;
- chain_bi0 = smm->tx_buffers[ctx->s->thread_index][*n_bufs];
- _vec_len (smm->tx_buffers[ctx->s->thread_index]) = *n_bufs;
+ chain_bi0 = wrk->tx_buffers[*n_bufs];
+ _vec_len (wrk->tx_buffers) = *n_bufs;
chain_b = vlib_get_buffer (vm, chain_bi0);
chain_b->current_data = 0;
hdr->data_offset += n_bytes_read;
if (hdr->data_offset == hdr->data_length)
- svm_fifo_dequeue_drop (f, hdr->data_length);
+ {
+ u32 offset = hdr->data_length + SESSION_CONN_HDR_LEN;
+ svm_fifo_dequeue_drop (f, offset);
+ }
}
else
n_bytes_read = svm_fifo_dequeue_nowait (ctx->s->server_tx_fifo,
always_inline int
session_output_try_get_buffers (vlib_main_t * vm,
- session_manager_main_t * smm,
+ session_manager_worker_t * wrk,
u32 thread_index, u16 * n_bufs, u32 wanted)
{
u32 n_alloc;
- vec_validate_aligned (smm->tx_buffers[thread_index], wanted - 1,
- CLIB_CACHE_LINE_BYTES);
- n_alloc = vlib_buffer_alloc (vm, &smm->tx_buffers[thread_index][*n_bufs],
+ vec_validate_aligned (wrk->tx_buffers, wanted - 1, CLIB_CACHE_LINE_BYTES);
+ n_alloc = vlib_buffer_alloc (vm, &wrk->tx_buffers[*n_bufs],
wanted - *n_bufs);
*n_bufs += n_alloc;
- _vec_len (smm->tx_buffers[thread_index]) = *n_bufs;
+ _vec_len (wrk->tx_buffers) = *n_bufs;
return n_alloc;
}
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)
+ if (s->session_state >= SESSION_STATE_TRANSPORT_CLOSED)
return 2;
}
return 0;
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);
+ n_bytes_per_buf = VLIB_BUFFER_DATA_SIZE;
ASSERT (n_bytes_per_buf > MAX_HDRS_LEN);
n_bytes_per_seg = MAX_HDRS_LEN + ctx->snd_mss;
ctx->n_bufs_per_seg = ceil ((f64) n_bytes_per_seg / n_bytes_per_buf);
always_inline int
session_tx_fifo_read_and_snd_i (vlib_main_t * vm, vlib_node_runtime_t * node,
- session_fifo_event_t * e,
+ session_event_t * e,
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 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];
+ session_manager_worker_t *wrk = &smm->wrk[thread_index];
+ session_tx_context_t *ctx = &wrk->ctx;
transport_proto_t tp;
vlib_buffer_t *pb;
u16 n_bufs, rv;
if (PREDICT_FALSE ((rv = session_tx_not_ready (s, peek_data))))
{
if (rv < 2)
- vec_add1 (smm->pending_event_vector[thread_index], *e);
- return 0;
+ vec_add1 (wrk->pending_event_vector, *e);
+ return SESSION_TX_NO_DATA;
}
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;
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);
- ctx->snd_space = ctx->transport_vft->send_space (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);
+ }
+
+ ctx->snd_space = transport_connection_snd_space (ctx->tc,
+ vm->clib_time.
+ last_cpu_time,
+ ctx->snd_mss);
if (ctx->snd_space == 0 || ctx->snd_mss == 0)
{
- vec_add1 (smm->pending_event_vector[thread_index], *e);
- return 0;
+ vec_add1 (wrk->pending_event_vector, *e);
+ return SESSION_TX_NO_DATA;
}
/* Allow enqueuing of a new event */
peek_data);
if (PREDICT_FALSE (!ctx->max_len_to_snd))
- return 0;
+ return SESSION_TX_NO_DATA;
- n_bufs = vec_len (smm->tx_buffers[thread_index]);
+ n_bufs = vec_len (wrk->tx_buffers);
n_bufs_needed = ctx->n_segs_per_evt * ctx->n_bufs_per_seg;
/*
*/
if (n_bufs < n_bufs_needed)
{
- session_output_try_get_buffers (vm, smm, thread_index, &n_bufs,
+ session_output_try_get_buffers (vm, wrk, thread_index, &n_bufs,
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;
+ vec_add1 (wrk->pending_event_vector, *e);
+ return SESSION_TX_NO_BUFFERS;
}
}
}
ctx->left_to_snd = ctx->max_len_to_snd;
n_left = ctx->n_segs_per_evt;
- while (n_left)
+
+ while (n_left >= 4)
{
- while (n_left >= 4)
- {
- vlib_buffer_t *b0, *b1;
- u32 bi0, bi1;
+ vlib_buffer_t *b0, *b1;
+ u32 bi0, bi1;
- 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);
+ pbi = wrk->tx_buffers[n_bufs - 3];
+ pb = vlib_get_buffer (vm, pbi);
+ vlib_prefetch_buffer_header (pb, STORE);
+ pbi = wrk->tx_buffers[n_bufs - 4];
+ pb = vlib_get_buffer (vm, pbi);
+ vlib_prefetch_buffer_header (pb, STORE);
- to_next[0] = bi0 = smm->tx_buffers[thread_index][--n_bufs];
- to_next[1] = bi1 = smm->tx_buffers[thread_index][--n_bufs];
+ to_next[0] = bi0 = wrk->tx_buffers[--n_bufs];
+ to_next[1] = bi1 = wrk->tx_buffers[--n_bufs];
- b0 = vlib_get_buffer (vm, bi0);
- b1 = vlib_get_buffer (vm, bi1);
+ b0 = vlib_get_buffer (vm, bi0);
+ b1 = vlib_get_buffer (vm, bi1);
- session_tx_fill_buffer (vm, ctx, b0, &n_bufs, peek_data);
- session_tx_fill_buffer (vm, ctx, b1, &n_bufs, peek_data);
+ session_tx_fill_buffer (vm, ctx, b0, &n_bufs, peek_data);
+ session_tx_fill_buffer (vm, ctx, b1, &n_bufs, peek_data);
- ctx->transport_vft->push_header (ctx->tc, b0);
- ctx->transport_vft->push_header (ctx->tc, b1);
+ 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;
+ to_next += 2;
+ n_left_to_next -= 2;
+ n_left -= 2;
- VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b0);
- VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b1);
+ VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b0);
+ VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b1);
- 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_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;
- vlib_validate_buffer_enqueue_x2 (vm, node, next_index, to_next,
- n_left_to_next, bi0, bi1,
- next0, next1);
- }
- while (n_left)
+ if (n_left > 1)
{
- vlib_buffer_t *b0;
- u32 bi0;
+ pbi = wrk->tx_buffers[n_bufs - 2];
+ pb = vlib_get_buffer (vm, pbi);
+ vlib_prefetch_buffer_header (pb, STORE);
+ }
- 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);
+ to_next[0] = bi0 = wrk->tx_buffers[--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_left -= 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);
}
- _vec_len (smm->tx_buffers[thread_index]) = n_bufs;
+
+ 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 (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);
/* 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);
+ vec_add1 (wrk->pending_event_vector, *e);
if (!peek_data && ctx->transport_vft->tx_type == TRANSPORT_TX_DGRAM)
{
/* More data needs to be read */
else if (svm_fifo_max_dequeue (s->server_tx_fifo) > 0)
if (svm_fifo_set_event (s->server_tx_fifo))
- vec_add1 (smm->pending_event_vector[thread_index], *e);
+ vec_add1 (wrk->pending_event_vector, *e);
}
- return 0;
+ return SESSION_TX_OK;
}
int
session_tx_fifo_peek_and_snd (vlib_main_t * vm, vlib_node_runtime_t * node,
- session_fifo_event_t * e0,
- stream_session_t * s0, int *n_tx_pkts)
+ session_event_t * e,
+ stream_session_t * s, int *n_tx_pkts)
{
- return session_tx_fifo_read_and_snd_i (vm, node, e0, s0, n_tx_pkts, 1);
+ return session_tx_fifo_read_and_snd_i (vm, node, e, s, n_tx_pkts, 1);
}
int
session_tx_fifo_dequeue_and_snd (vlib_main_t * vm, vlib_node_runtime_t * node,
- session_fifo_event_t * e0,
- stream_session_t * s0, int *n_tx_pkts)
+ session_event_t * e,
+ stream_session_t * s, int *n_tx_pkts)
{
- return session_tx_fifo_read_and_snd_i (vm, node, e0, s0, n_tx_pkts, 0);
+ return session_tx_fifo_read_and_snd_i (vm, node, e, s, n_tx_pkts, 0);
}
int
session_tx_fifo_dequeue_internal (vlib_main_t * vm,
vlib_node_runtime_t * node,
- session_fifo_event_t * e0,
- stream_session_t * s0, int *n_tx_pkts)
+ session_event_t * e,
+ stream_session_t * s, int *n_tx_pkts)
{
application_t *app;
- app = application_get (s0->opaque);
- svm_fifo_unset_event (s0->server_tx_fifo);
- return app->cb_fns.builtin_app_tx_callback (s0);
+ if (PREDICT_FALSE (s->session_state == SESSION_STATE_CLOSED))
+ return 0;
+ app = application_get (s->t_app_index);
+ svm_fifo_unset_event (s->server_tx_fifo);
+ return app->cb_fns.builtin_app_tx_callback (s);
}
always_inline stream_session_t *
-session_event_get_session (session_fifo_event_t * e, u8 thread_index)
+session_event_get_session (session_event_t * e, u8 thread_index)
{
return session_get_if_valid (e->fifo->master_session_index, thread_index);
}
+static void
+session_update_dispatch_period (session_manager_worker_t * wrk, f64 now,
+ u32 thread_index)
+{
+ if (wrk->last_tx_packets)
+ {
+ f64 sample = now - wrk->last_vlib_time;
+ wrk->dispatch_period = (wrk->dispatch_period + sample) * 0.5;
+ }
+ wrk->last_vlib_time = now;
+}
+
+static uword
+session_queue_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node,
+ vlib_frame_t * frame)
+{
+ session_manager_main_t *smm = vnet_get_session_manager_main ();
+ u32 thread_index = vm->thread_index, n_to_dequeue, n_events;
+ session_manager_worker_t *wrk = &smm->wrk[thread_index];
+ session_event_t *e, *fifo_events;
+ svm_msg_q_msg_t _msg, *msg = &_msg;
+ f64 now = vlib_time_now (vm);
+ int n_tx_packets = 0, i, rv;
+ app_worker_t *app_wrk;
+ application_t *app;
+ svm_msg_q_t *mq;
+ void (*fp) (void *);
+
+ SESSION_EVT_DBG (SESSION_EVT_POLL_GAP_TRACK, smm, thread_index);
+
+ /*
+ * Update transport time
+ */
+ session_update_dispatch_period (wrk, now, thread_index);
+ transport_update_time (now, thread_index);
+
+ SESSION_EVT_DBG (SESSION_EVT_DEQ_NODE, 0);
+
+ /* Make sure postponed events are handled first */
+ fifo_events = wrk->free_event_vector;
+ vec_append (fifo_events, wrk->postponed_event_vector);
+ _vec_len (wrk->postponed_event_vector) = 0;
+
+ /* Try to dequeue what is available. Don't wait for lock.
+ * XXX: we may need priorities here */
+ mq = wrk->vpp_event_queue;
+ n_to_dequeue = svm_msg_q_size (mq);
+ if (n_to_dequeue && svm_msg_q_try_lock (mq) == 0)
+ {
+ for (i = 0; i < n_to_dequeue; i++)
+ {
+ vec_add2 (fifo_events, e, 1);
+ svm_msg_q_sub_w_lock (mq, msg);
+ /* 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 (e, svm_msg_q_msg_data (mq, msg), sizeof (*e));
+ svm_msg_q_free_msg (mq, msg);
+ }
+ svm_msg_q_unlock (mq);
+ }
+
+ vec_append (fifo_events, wrk->pending_event_vector);
+ vec_append (fifo_events, wrk->pending_disconnects);
+
+ _vec_len (wrk->pending_event_vector) = 0;
+ _vec_len (wrk->pending_disconnects) = 0;
+
+ n_events = vec_len (fifo_events);
+ if (PREDICT_FALSE (!n_events))
+ return 0;
+
+ for (i = 0; i < n_events; i++)
+ {
+ stream_session_t *s; /* $$$ prefetch 1 ahead maybe */
+ session_event_t *e;
+ u8 want_tx_evt;
+
+ e = &fifo_events[i];
+ switch (e->event_type)
+ {
+ case SESSION_IO_EVT_TX_FLUSH:
+ case FIFO_EVENT_APP_TX:
+ /* Don't try to send more that one frame per dispatch cycle */
+ if (n_tx_packets == VLIB_FRAME_SIZE)
+ {
+ vec_add1 (wrk->postponed_event_vector, *e);
+ break;
+ }
+
+ s = session_event_get_session (e, thread_index);
+ if (PREDICT_FALSE (!s))
+ {
+ clib_warning ("session was freed!");
+ continue;
+ }
+
+ want_tx_evt = svm_fifo_want_tx_evt (s->server_tx_fifo);
+ /* Spray packets in per session type frames, since they go to
+ * different nodes */
+ rv = (smm->session_tx_fns[s->session_type]) (vm, node, e, s,
+ &n_tx_packets);
+ if (PREDICT_TRUE (rv == SESSION_TX_OK))
+ {
+ if (PREDICT_FALSE (want_tx_evt))
+ {
+ svm_fifo_set_want_tx_evt (s->server_tx_fifo, 0);
+ session_dequeue_notify (s);
+ }
+ }
+ else if (PREDICT_FALSE (rv == SESSION_TX_NO_BUFFERS))
+ {
+ vlib_node_increment_counter (vm, node->node_index,
+ SESSION_QUEUE_ERROR_NO_BUFFER, 1);
+ continue;
+ }
+ break;
+ case FIFO_EVENT_DISCONNECT:
+ s = session_get_from_handle_if_valid (e->session_handle);
+ if (PREDICT_FALSE (!s))
+ break;
+
+ /* Make sure session disconnects run after the pending list is
+ * drained, i.e., postpone if the first time. If not the first
+ * and the tx queue is still not empty, try to wait for some
+ * dispatch cycles */
+ if (!e->postponed
+ || (e->postponed < 200
+ && svm_fifo_max_dequeue (s->server_tx_fifo)))
+ {
+ e->postponed += 1;
+ vec_add1 (wrk->pending_disconnects, *e);
+ continue;
+ }
+
+ session_transport_close (s);
+ break;
+ case FIFO_EVENT_BUILTIN_RX:
+ s = session_event_get_session (e, thread_index);
+ if (PREDICT_FALSE (!s || s->session_state >= SESSION_STATE_CLOSING))
+ continue;
+ svm_fifo_unset_event (s->server_rx_fifo);
+ app_wrk = app_worker_get (s->app_wrk_index);
+ app = application_get (app_wrk->app_index);
+ app->cb_fns.builtin_app_rx_callback (s);
+ break;
+ case FIFO_EVENT_BUILTIN_TX:
+ s = session_get_from_handle_if_valid (e->session_handle);
+ if (PREDICT_TRUE (s != 0))
+ session_tx_fifo_dequeue_internal (vm, node, e, s, &n_tx_packets);
+ break;
+ case FIFO_EVENT_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;
+ default:
+ clib_warning ("unhandled event type %d", e->event_type);
+ }
+ }
+
+ _vec_len (fifo_events) = 0;
+ wrk->free_event_vector = fifo_events;
+ wrk->last_tx_packets = n_tx_packets;
+
+ vlib_node_increment_counter (vm, session_queue_node.index,
+ SESSION_QUEUE_ERROR_TX, n_tx_packets);
+
+ SESSION_EVT_DBG (SESSION_EVT_DISPATCH_END, smm, thread_index);
+
+ return n_tx_packets;
+}
+
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (session_queue_node) =
+{
+ .function = session_queue_node_fn,
+ .name = "session-queue",
+ .format_trace = format_session_queue_trace,
+ .type = VLIB_NODE_TYPE_INPUT,
+ .n_errors = ARRAY_LEN (session_queue_error_strings),
+ .error_strings = session_queue_error_strings,
+ .state = VLIB_NODE_STATE_DISABLED,
+};
+/* *INDENT-ON* */
+
void
dump_thread_0_event_queue (void)
{
session_manager_main_t *smm = vnet_get_session_manager_main ();
vlib_main_t *vm = &vlib_global_main;
u32 my_thread_index = vm->thread_index;
- session_fifo_event_t _e, *e = &_e;
+ session_event_t _e, *e = &_e;
+ svm_msg_q_ring_t *ring;
stream_session_t *s0;
+ svm_msg_q_msg_t *msg;
+ svm_msg_q_t *mq;
int i, index;
- i8 *headp;
-
- svm_queue_t *q;
- q = smm->vpp_event_queues[my_thread_index];
- index = q->head;
+ mq = smm->wrk[my_thread_index].vpp_event_queue;
+ index = mq->q->head;
- for (i = 0; i < q->cursize; i++)
+ for (i = 0; i < mq->q->cursize; i++)
{
- headp = (i8 *) (&q->data[0] + q->elsize * index);
- clib_memcpy (e, headp, q->elsize);
+ msg = (svm_msg_q_msg_t *) (&mq->q->data[0] + mq->q->elsize * index);
+ ring = svm_msg_q_ring (mq, msg->ring_index);
+ clib_memcpy_fast (e, svm_msg_q_msg_data (mq, msg), ring->elsize);
switch (e->event_type)
{
case FIFO_EVENT_RPC:
fformat (stdout, "[%04d] RPC call %llx with %llx\n",
- i, (u64) (e->rpc_args.fp), (u64) (e->rpc_args.arg));
+ i, (u64) (uword) (e->rpc_args.fp),
+ (u64) (uword) (e->rpc_args.arg));
break;
default:
index++;
- if (index == q->maxsize)
+ if (index == mq->q->maxsize)
index = 0;
}
}
static u8
-session_node_cmp_event (session_fifo_event_t * e, svm_fifo_t * f)
+session_node_cmp_event (session_event_t * e, svm_fifo_t * f)
{
stream_session_t *s;
switch (e->event_type)
}
u8
-session_node_lookup_fifo_event (svm_fifo_t * f, session_fifo_event_t * e)
+session_node_lookup_fifo_event (svm_fifo_t * f, session_event_t * e)
{
- session_manager_main_t *smm = vnet_get_session_manager_main ();
- svm_queue_t *q;
- session_fifo_event_t *pending_event_vector, *evt;
+ session_event_t *pending_event_vector, *evt;
+ session_manager_worker_t *wrk;
int i, index, found = 0;
- i8 *headp;
+ svm_msg_q_msg_t *msg;
+ svm_msg_q_ring_t *ring;
+ svm_msg_q_t *mq;
u8 thread_index;
ASSERT (e);
thread_index = f->master_thread_index;
+ wrk = session_manager_get_worker (thread_index);
+
/*
* Search evt queue
*/
- q = smm->vpp_event_queues[thread_index];
- index = q->head;
- for (i = 0; i < q->cursize; i++)
+ mq = wrk->vpp_event_queue;
+ index = mq->q->head;
+ for (i = 0; i < mq->q->cursize; i++)
{
- headp = (i8 *) (&q->data[0] + q->elsize * index);
- clib_memcpy (e, headp, q->elsize);
+ msg = (svm_msg_q_msg_t *) (&mq->q->data[0] + mq->q->elsize * index);
+ ring = svm_msg_q_ring (mq, msg->ring_index);
+ clib_memcpy_fast (e, svm_msg_q_msg_data (mq, msg), ring->elsize);
found = session_node_cmp_event (e, f);
if (found)
return 1;
- if (++index == q->maxsize)
+ if (++index == mq->q->maxsize)
index = 0;
}
/*
* Search pending events vector
*/
- pending_event_vector = smm->pending_event_vector[thread_index];
+ pending_event_vector = wrk->pending_event_vector;
vec_foreach (evt, pending_event_vector)
{
found = session_node_cmp_event (evt, f);
if (found)
{
- clib_memcpy (e, evt, sizeof (*evt));
+ clib_memcpy_fast (e, evt, sizeof (*evt));
break;
}
}
return found;
}
-static uword
-session_queue_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node,
- vlib_frame_t * frame)
-{
- session_manager_main_t *smm = vnet_get_session_manager_main ();
- 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 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, thread_index);
-
- /*
- * Update transport time
- */
- transport_update_time (now, thread_index);
-
- /*
- * Get vpp queue events
- */
- q = smm->vpp_event_queues[thread_index];
- if (PREDICT_FALSE (q == 0))
- return 0;
-
- 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[thread_index];
-
- if (!n_to_dequeue && !vec_len (my_pending_event_vector)
- && !vec_len (smm->pending_disconnects[thread_index]))
- return 0;
-
- SESSION_EVT_DBG (SESSION_EVT_DEQ_NODE, 0);
-
- /*
- * If we didn't manage to process previous events try going
- * over them again without dequeuing new ones.
- */
- /* XXX: Block senders to sessions that can't keep up */
- if (0 && vec_len (my_pending_event_vector) >= 100)
- {
- clib_warning ("too many fifo events unsolved");
- goto skip_dequeue;
- }
-
- /* See you in the next life, don't be late */
- if (pthread_mutex_trylock (&q->mutex))
- return 0;
-
- for (i = 0; i < n_to_dequeue; i++)
- {
- vec_add2 (my_fifo_events, e, 1);
- svm_queue_sub_raw (q, (u8 *) e);
- }
-
- /* The other side of the connection is not polling */
- if (q->cursize < (q->maxsize / 8))
- (void) pthread_cond_broadcast (&q->condvar);
- pthread_mutex_unlock (&q->mutex);
-
- vec_append (my_fifo_events, my_pending_event_vector);
- vec_append (my_fifo_events, smm->pending_disconnects[thread_index]);
-
- _vec_len (my_pending_event_vector) = 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);
- for (i = 0; i < n_events; i++)
- {
- stream_session_t *s0; /* $$$ prefetch 1 ahead maybe */
- session_fifo_event_t *e0;
-
- e0 = &my_fifo_events[i];
- switch (e0->event_type)
- {
- case FIFO_EVENT_APP_TX:
- 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,
- &n_tx_packets);
- /* Out of buffers */
- if (PREDICT_FALSE (rv < 0))
- {
- vlib_node_increment_counter (vm, node->node_index,
- SESSION_QUEUE_ERROR_NO_BUFFER, 1);
- continue;
- }
- break;
- case FIFO_EVENT_DISCONNECT:
- /* Make sure stream disconnects run after the pending list is drained */
- s0 = session_get_from_handle (e0->session_handle);
- if (!e0->postponed)
- {
- e0->postponed = 1;
- vec_add1 (smm->pending_disconnects[thread_index], *e0);
- continue;
- }
- /* If tx queue is still not empty, wait a bit */
- if (svm_fifo_max_dequeue (s0->server_tx_fifo)
- && e0->postponed < 200)
- {
- e0->postponed += 1;
- 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, thread_index);
- if (PREDICT_FALSE (!s0))
- continue;
- svm_fifo_unset_event (s0->server_rx_fifo);
- app = application_get (s0->app_index);
- app->cb_fns.builtin_app_rx_callback (s0);
- break;
- case FIFO_EVENT_RPC:
- fp = e0->rpc_args.fp;
- (*fp) (e0->rpc_args.arg);
- break;
-
- default:
- clib_warning ("unhandled event type %d", e0->event_type);
- }
- }
-
- _vec_len (my_fifo_events) = 0;
- 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);
-
- return n_tx_packets;
-}
-
-/* *INDENT-OFF* */
-VLIB_REGISTER_NODE (session_queue_node) =
-{
- .function = session_queue_node_fn,
- .name = "session-queue",
- .format_trace = format_session_queue_trace,
- .type = VLIB_NODE_TYPE_INPUT,
- .n_errors = ARRAY_LEN (session_queue_error_strings),
- .error_strings = session_queue_error_strings,
- .state = VLIB_NODE_STATE_DISABLED,
-};
-/* *INDENT-ON* */
-
static clib_error_t *
session_queue_exit (vlib_main_t * vm)
{
Code Review / vpp.git / blobdiff