2 * Copyright (c) 2015 Cisco and/or its affiliates.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at:
7 * http://www.apache.org/licenses/LICENSE-2.0
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10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
16 * node_funcs.h: processing nodes global functions/inlines
18 * Copyright (c) 2008 Eliot Dresselhaus
20 * Permission is hereby granted, free of charge, to any person obtaining
21 * a copy of this software and associated documentation files (the
22 * "Software"), to deal in the Software without restriction, including
23 * without limitation the rights to use, copy, modify, merge, publish,
24 * distribute, sublicense, and/or sell copies of the Software, and to
25 * permit persons to whom the Software is furnished to do so, subject to
26 * the following conditions:
28 * The above copyright notice and this permission notice shall be
29 * included in all copies or substantial portions of the Software.
31 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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33 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
34 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
35 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
36 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
37 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
45 #ifndef included_vlib_node_funcs_h
46 #define included_vlib_node_funcs_h
48 #include <vppinfra/fifo.h>
49 #include <vppinfra/tw_timer_1t_3w_1024sl_ov.h>
51 /** \brief Get vlib node by index.
52 @warning This function will ASSERT if @c i is out of range.
53 @param vm vlib_main_t pointer, varies by thread
55 @return pointer to the requested vlib_node_t.
58 always_inline vlib_node_t *
59 vlib_get_node (vlib_main_t * vm, u32 i)
61 return vec_elt (vm->node_main.nodes, i);
64 /** \brief Get vlib node by graph arc (next) index.
65 @param vm vlib_main_t pointer, varies by thread
66 @param node_index index of original node
67 @param next_index graph arc index
68 @return pointer to the vlib_node_t at the end of the indicated arc
71 always_inline vlib_node_t *
72 vlib_get_next_node (vlib_main_t * vm, u32 node_index, u32 next_index)
74 vlib_node_main_t *nm = &vm->node_main;
77 n = vec_elt (nm->nodes, node_index);
78 ASSERT (next_index < vec_len (n->next_nodes));
79 return vlib_get_node (vm, n->next_nodes[next_index]);
82 /** \brief Get node runtime by node index.
83 @param vm vlib_main_t pointer, varies by thread
84 @param node_index index of node
85 @return pointer to the indicated vlib_node_runtime_t
88 always_inline vlib_node_runtime_t *
89 vlib_node_get_runtime (vlib_main_t * vm, u32 node_index)
91 vlib_node_main_t *nm = &vm->node_main;
92 vlib_node_t *n = vec_elt (nm->nodes, node_index);
94 if (n->type != VLIB_NODE_TYPE_PROCESS)
95 return vec_elt_at_index (nm->nodes_by_type[n->type], n->runtime_index);
98 p = vec_elt (nm->processes, n->runtime_index);
99 return &p->node_runtime;
103 /** \brief Get node runtime private data by node index.
104 @param vm vlib_main_t pointer, varies by thread
105 @param node_index index of the node
106 @return pointer to the indicated vlib_node_runtime_t private data
110 vlib_node_get_runtime_data (vlib_main_t * vm, u32 node_index)
112 vlib_node_runtime_t *r = vlib_node_get_runtime (vm, node_index);
113 return r->runtime_data;
116 /** \brief Set node runtime private data.
117 @param vm vlib_main_t pointer, varies by thread
118 @param node_index index of the node
119 @param runtime_data arbitrary runtime private data
120 @param n_runtime_data_bytes size of runtime private data
124 vlib_node_set_runtime_data (vlib_main_t * vm, u32 node_index,
125 void *runtime_data, u32 n_runtime_data_bytes)
127 vlib_node_t *n = vlib_get_node (vm, node_index);
128 vlib_node_runtime_t *r = vlib_node_get_runtime (vm, node_index);
130 n->runtime_data_bytes = n_runtime_data_bytes;
131 vec_free (n->runtime_data);
132 vec_add (n->runtime_data, runtime_data, n_runtime_data_bytes);
134 ASSERT (vec_len (n->runtime_data) <= sizeof (vlib_node_runtime_t) -
135 STRUCT_OFFSET_OF (vlib_node_runtime_t, runtime_data));
137 if (vec_len (n->runtime_data) > 0)
138 clib_memcpy (r->runtime_data, n->runtime_data, vec_len (n->runtime_data));
141 /** \brief Set node dispatch state.
142 @param vm vlib_main_t pointer, varies by thread
143 @param node_index index of the node
144 @param new_state new state for node, see vlib_node_state_t
147 vlib_node_set_state (vlib_main_t * vm, u32 node_index,
148 vlib_node_state_t new_state)
150 vlib_node_main_t *nm = &vm->node_main;
152 vlib_node_runtime_t *r;
154 n = vec_elt (nm->nodes, node_index);
155 if (n->type == VLIB_NODE_TYPE_PROCESS)
157 vlib_process_t *p = vec_elt (nm->processes, n->runtime_index);
158 r = &p->node_runtime;
160 /* When disabling make sure flags are cleared. */
161 p->flags &= ~(VLIB_PROCESS_RESUME_PENDING
162 | VLIB_PROCESS_IS_SUSPENDED_WAITING_FOR_CLOCK
163 | VLIB_PROCESS_IS_SUSPENDED_WAITING_FOR_EVENT);
166 r = vec_elt_at_index (nm->nodes_by_type[n->type], n->runtime_index);
168 ASSERT (new_state < VLIB_N_NODE_STATE);
170 if (n->type == VLIB_NODE_TYPE_INPUT)
172 ASSERT (nm->input_node_counts_by_state[n->state] > 0);
173 nm->input_node_counts_by_state[n->state] -= 1;
174 nm->input_node_counts_by_state[new_state] += 1;
177 n->state = new_state;
178 r->state = new_state;
181 /** \brief Get node dispatch state.
182 @param vm vlib_main_t pointer, varies by thread
183 @param node_index index of the node
184 @return state for node, see vlib_node_state_t
186 always_inline vlib_node_state_t
187 vlib_node_get_state (vlib_main_t * vm, u32 node_index)
189 vlib_node_main_t *nm = &vm->node_main;
191 n = vec_elt (nm->nodes, node_index);
196 vlib_node_set_interrupt_pending (vlib_main_t * vm, u32 node_index)
198 vlib_node_main_t *nm = &vm->node_main;
199 vlib_node_t *n = vec_elt (nm->nodes, node_index);
200 ASSERT (n->type == VLIB_NODE_TYPE_INPUT);
201 clib_spinlock_lock_if_init (&nm->pending_interrupt_lock);
202 vec_add1 (nm->pending_interrupt_node_runtime_indices, n->runtime_index);
203 clib_spinlock_unlock_if_init (&nm->pending_interrupt_lock);
206 always_inline vlib_process_t *
207 vlib_get_process_from_node (vlib_main_t * vm, vlib_node_t * node)
209 vlib_node_main_t *nm = &vm->node_main;
210 ASSERT (node->type == VLIB_NODE_TYPE_PROCESS);
211 return vec_elt (nm->processes, node->runtime_index);
214 /* Fetches frame with given handle. */
215 always_inline vlib_frame_t *
216 vlib_get_frame_no_check (vlib_main_t * vm, uword frame_index)
219 f = vm->heap_base + (frame_index * VLIB_FRAME_ALIGN);
224 vlib_frame_index_no_check (vlib_main_t * vm, vlib_frame_t * f)
228 ASSERT (((uword) f & (VLIB_FRAME_ALIGN - 1)) == 0);
230 i = ((u8 *) f - (u8 *) vm->heap_base);
231 ASSERT ((i / VLIB_FRAME_ALIGN) <= 0xFFFFFFFFULL);
233 return i / VLIB_FRAME_ALIGN;
236 always_inline vlib_frame_t *
237 vlib_get_frame (vlib_main_t * vm, uword frame_index)
239 vlib_frame_t *f = vlib_get_frame_no_check (vm, frame_index);
240 ASSERT (f->flags & VLIB_FRAME_IS_ALLOCATED);
245 vlib_frame_index (vlib_main_t * vm, vlib_frame_t * f)
247 uword i = vlib_frame_index_no_check (vm, f);
248 ASSERT (vlib_get_frame (vm, i) == f);
252 /* Byte alignment for vector arguments. */
253 #define VLIB_FRAME_VECTOR_ALIGN (1 << 4)
256 vlib_frame_vector_byte_offset (u32 scalar_size)
258 return round_pow2 (sizeof (vlib_frame_t) + scalar_size,
259 VLIB_FRAME_VECTOR_ALIGN);
262 /** \brief Get pointer to frame vector data.
263 @param f vlib_frame_t pointer
264 @return pointer to first vector element in frame
267 vlib_frame_vector_args (vlib_frame_t * f)
269 return (void *) f + vlib_frame_vector_byte_offset (f->scalar_size);
272 /** \brief Get pointer to frame scalar data.
274 @warning This is almost certainly not the function you wish to call.
275 See @ref vlib_frame_vector_args instead.
277 @param f vlib_frame_t pointer
279 @return arbitrary node scalar data
281 @sa vlib_frame_vector_args
284 vlib_frame_args (vlib_frame_t * f)
286 return vlib_frame_vector_args (f) - f->scalar_size;
289 always_inline vlib_next_frame_t *
290 vlib_node_runtime_get_next_frame (vlib_main_t * vm,
291 vlib_node_runtime_t * n, u32 next_index)
293 vlib_node_main_t *nm = &vm->node_main;
294 vlib_next_frame_t *nf;
296 ASSERT (next_index < n->n_next_nodes);
297 nf = vec_elt_at_index (nm->next_frames, n->next_frame_index + next_index);
301 vlib_node_t *node, *next;
302 node = vec_elt (nm->nodes, n->node_index);
303 next = vec_elt (nm->nodes, node->next_nodes[next_index]);
304 ASSERT (nf->node_runtime_index == next->runtime_index);
310 /** \brief Get pointer to frame by (@c node_index, @c next_index).
312 @warning This is not a function that you should call directly.
313 See @ref vlib_get_next_frame instead.
315 @param vm vlib_main_t pointer, varies by thread
316 @param node_index index of the node
317 @param next_index graph arc index
319 @return pointer to the requested vlib_next_frame_t
321 @sa vlib_get_next_frame
324 always_inline vlib_next_frame_t *
325 vlib_node_get_next_frame (vlib_main_t * vm, u32 node_index, u32 next_index)
327 vlib_node_main_t *nm = &vm->node_main;
329 vlib_node_runtime_t *r;
331 n = vec_elt (nm->nodes, node_index);
332 r = vec_elt_at_index (nm->nodes_by_type[n->type], n->runtime_index);
333 return vlib_node_runtime_get_next_frame (vm, r, next_index);
336 vlib_frame_t *vlib_get_next_frame_internal (vlib_main_t * vm,
337 vlib_node_runtime_t * node,
339 u32 alloc_new_frame);
341 #define vlib_get_next_frame_macro(vm,node,next_index,vectors,n_vectors_left,alloc_new_frame) \
344 = vlib_get_next_frame_internal ((vm), (node), (next_index), \
345 (alloc_new_frame)); \
346 u32 _n = _f->n_vectors; \
347 (vectors) = vlib_frame_vector_args (_f) + _n * sizeof ((vectors)[0]); \
348 (n_vectors_left) = VLIB_FRAME_SIZE - _n; \
352 /** \brief Get pointer to next frame vector data by
353 (@c vlib_node_runtime_t, @c next_index).
354 Standard single/dual loop boilerplate element.
355 @attention This is a MACRO, with SIDE EFFECTS.
357 @param vm vlib_main_t pointer, varies by thread
358 @param node current node vlib_node_runtime_t pointer
359 @param next_index requested graph arc index
361 @return @c vectors -- pointer to next available vector slot
362 @return @c n_vectors_left -- number of vector slots available
364 #define vlib_get_next_frame(vm,node,next_index,vectors,n_vectors_left) \
365 vlib_get_next_frame_macro (vm, node, next_index, \
366 vectors, n_vectors_left, \
367 /* alloc new frame */ 0)
369 #define vlib_get_new_next_frame(vm,node,next_index,vectors,n_vectors_left) \
370 vlib_get_next_frame_macro (vm, node, next_index, \
371 vectors, n_vectors_left, \
372 /* alloc new frame */ 1)
374 /** \brief Release pointer to next frame vector data.
375 Standard single/dual loop boilerplate element.
376 @param vm vlib_main_t pointer, varies by thread
377 @param r current node vlib_node_runtime_t pointer
378 @param next_index graph arc index
379 @param n_packets_left number of slots still available in vector
382 vlib_put_next_frame (vlib_main_t * vm,
383 vlib_node_runtime_t * r,
384 u32 next_index, u32 n_packets_left);
386 /* Combination get plus put. Returns vector argument just added. */
387 #define vlib_set_next_frame(vm,node,next_index,v) \
390 vlib_get_next_frame ((vm), (node), (next_index), (v), _n_left); \
391 ASSERT (_n_left > 0); \
392 vlib_put_next_frame ((vm), (node), (next_index), _n_left - 1); \
397 vlib_set_next_frame_buffer (vlib_main_t * vm,
398 vlib_node_runtime_t * node,
399 u32 next_index, u32 buffer_index)
402 p = vlib_set_next_frame (vm, node, next_index, p);
406 vlib_frame_t *vlib_get_frame_to_node (vlib_main_t * vm, u32 to_node_index);
407 void vlib_put_frame_to_node (vlib_main_t * vm, u32 to_node_index,
411 vlib_in_process_context (vlib_main_t * vm)
413 return vm->node_main.current_process_index != ~0;
416 always_inline vlib_process_t *
417 vlib_get_current_process (vlib_main_t * vm)
419 vlib_node_main_t *nm = &vm->node_main;
420 if (vlib_in_process_context (vm))
421 return vec_elt (nm->processes, nm->current_process_index);
426 vlib_current_process (vlib_main_t * vm)
428 return vlib_get_current_process (vm)->node_runtime.node_index;
431 /** Returns TRUE if a process suspend time is less than 10us
432 @param dt - remaining poll time in seconds
433 @returns 1 if dt < 10e-6, 0 otherwise
436 vlib_process_suspend_time_is_zero (f64 dt)
441 /** Suspend a vlib cooperative multi-tasking thread for a period of time
442 @param vm - vlib_main_t *
443 @param dt - suspend interval in seconds
444 @returns VLIB_PROCESS_RESUME_LONGJMP_RESUME, routinely ignored
448 vlib_process_suspend (vlib_main_t * vm, f64 dt)
451 vlib_node_main_t *nm = &vm->node_main;
452 vlib_process_t *p = vec_elt (nm->processes, nm->current_process_index);
454 if (vlib_process_suspend_time_is_zero (dt))
455 return VLIB_PROCESS_RESUME_LONGJMP_RESUME;
457 p->flags |= VLIB_PROCESS_IS_SUSPENDED_WAITING_FOR_CLOCK;
458 r = clib_setjmp (&p->resume_longjmp, VLIB_PROCESS_RESUME_LONGJMP_SUSPEND);
459 if (r == VLIB_PROCESS_RESUME_LONGJMP_SUSPEND)
461 /* expiration time in 10us ticks */
462 p->resume_clock_interval = dt * 1e5;
463 clib_longjmp (&p->return_longjmp, VLIB_PROCESS_RETURN_LONGJMP_SUSPEND);
470 vlib_process_free_event_type (vlib_process_t * p, uword t,
471 uword is_one_time_event)
473 ASSERT (!pool_is_free_index (p->event_type_pool, t));
474 pool_put_index (p->event_type_pool, t);
475 if (is_one_time_event)
476 p->one_time_event_type_bitmap =
477 clib_bitmap_andnoti (p->one_time_event_type_bitmap, t);
481 vlib_process_maybe_free_event_type (vlib_process_t * p, uword t)
483 ASSERT (!pool_is_free_index (p->event_type_pool, t));
484 if (clib_bitmap_get (p->one_time_event_type_bitmap, t))
485 vlib_process_free_event_type (p, t, /* is_one_time_event */ 1);
489 vlib_process_get_event_data (vlib_main_t * vm,
490 uword * return_event_type_opaque)
492 vlib_node_main_t *nm = &vm->node_main;
494 vlib_process_event_type_t *et;
496 void *event_data_vector;
498 p = vec_elt (nm->processes, nm->current_process_index);
500 /* Find first type with events ready.
501 Return invalid type when there's nothing there. */
502 t = clib_bitmap_first_set (p->non_empty_event_type_bitmap);
506 p->non_empty_event_type_bitmap =
507 clib_bitmap_andnoti (p->non_empty_event_type_bitmap, t);
509 ASSERT (_vec_len (p->pending_event_data_by_type_index[t]) > 0);
510 event_data_vector = p->pending_event_data_by_type_index[t];
511 p->pending_event_data_by_type_index[t] = 0;
513 et = pool_elt_at_index (p->event_type_pool, t);
515 /* Return user's opaque value and possibly index. */
516 *return_event_type_opaque = et->opaque;
518 vlib_process_maybe_free_event_type (p, t);
520 return event_data_vector;
523 /* Return event data vector for later reuse. We reuse event data to avoid
524 repeatedly allocating event vectors in cases where we care about speed. */
526 vlib_process_put_event_data (vlib_main_t * vm, void *event_data)
528 vlib_node_main_t *nm = &vm->node_main;
529 vec_add1 (nm->recycled_event_data_vectors, event_data);
532 /** Return the first event type which has occurred and a vector of per-event
533 data of that type, or a timeout indication
535 @param vm - vlib_main_t pointer
536 @param data_vector - pointer to a (uword *) vector to receive event data
537 @returns either an event type and a vector of per-event instance data,
538 or ~0 to indicate a timeout.
542 vlib_process_get_events (vlib_main_t * vm, uword ** data_vector)
544 vlib_node_main_t *nm = &vm->node_main;
546 vlib_process_event_type_t *et;
549 p = vec_elt (nm->processes, nm->current_process_index);
551 /* Find first type with events ready.
552 Return invalid type when there's nothing there. */
553 t = clib_bitmap_first_set (p->non_empty_event_type_bitmap);
557 p->non_empty_event_type_bitmap =
558 clib_bitmap_andnoti (p->non_empty_event_type_bitmap, t);
560 l = _vec_len (p->pending_event_data_by_type_index[t]);
562 vec_add (*data_vector, p->pending_event_data_by_type_index[t], l);
563 _vec_len (p->pending_event_data_by_type_index[t]) = 0;
565 et = pool_elt_at_index (p->event_type_pool, t);
567 /* Return user's opaque value. */
570 vlib_process_maybe_free_event_type (p, t);
576 vlib_process_get_events_helper (vlib_process_t * p, uword t,
577 uword ** data_vector)
581 p->non_empty_event_type_bitmap =
582 clib_bitmap_andnoti (p->non_empty_event_type_bitmap, t);
584 l = _vec_len (p->pending_event_data_by_type_index[t]);
586 vec_add (*data_vector, p->pending_event_data_by_type_index[t], l);
587 _vec_len (p->pending_event_data_by_type_index[t]) = 0;
589 vlib_process_maybe_free_event_type (p, t);
594 /* As above but query as specified type of event. Returns number of
597 vlib_process_get_events_with_type (vlib_main_t * vm, uword ** data_vector,
598 uword with_type_opaque)
600 vlib_node_main_t *nm = &vm->node_main;
604 p = vec_elt (nm->processes, nm->current_process_index);
605 h = hash_get (p->event_type_index_by_type_opaque, with_type_opaque);
607 /* This can happen when an event has not yet been
608 signaled with given opaque type. */
612 if (!clib_bitmap_get (p->non_empty_event_type_bitmap, t))
615 return vlib_process_get_events_helper (p, t, data_vector);
618 always_inline uword *
619 vlib_process_wait_for_event (vlib_main_t * vm)
621 vlib_node_main_t *nm = &vm->node_main;
625 p = vec_elt (nm->processes, nm->current_process_index);
626 if (clib_bitmap_is_zero (p->non_empty_event_type_bitmap))
628 p->flags |= VLIB_PROCESS_IS_SUSPENDED_WAITING_FOR_EVENT;
630 clib_setjmp (&p->resume_longjmp, VLIB_PROCESS_RESUME_LONGJMP_SUSPEND);
631 if (r == VLIB_PROCESS_RESUME_LONGJMP_SUSPEND)
632 clib_longjmp (&p->return_longjmp,
633 VLIB_PROCESS_RETURN_LONGJMP_SUSPEND);
636 return p->non_empty_event_type_bitmap;
640 vlib_process_wait_for_one_time_event (vlib_main_t * vm,
641 uword ** data_vector,
642 uword with_type_index)
644 vlib_node_main_t *nm = &vm->node_main;
648 p = vec_elt (nm->processes, nm->current_process_index);
649 ASSERT (!pool_is_free_index (p->event_type_pool, with_type_index));
650 while (!clib_bitmap_get (p->non_empty_event_type_bitmap, with_type_index))
652 p->flags |= VLIB_PROCESS_IS_SUSPENDED_WAITING_FOR_EVENT;
654 clib_setjmp (&p->resume_longjmp, VLIB_PROCESS_RESUME_LONGJMP_SUSPEND);
655 if (r == VLIB_PROCESS_RESUME_LONGJMP_SUSPEND)
656 clib_longjmp (&p->return_longjmp,
657 VLIB_PROCESS_RETURN_LONGJMP_SUSPEND);
660 return vlib_process_get_events_helper (p, with_type_index, data_vector);
664 vlib_process_wait_for_event_with_type (vlib_main_t * vm,
665 uword ** data_vector,
666 uword with_type_opaque)
668 vlib_node_main_t *nm = &vm->node_main;
672 p = vec_elt (nm->processes, nm->current_process_index);
673 h = hash_get (p->event_type_index_by_type_opaque, with_type_opaque);
674 while (!h || !clib_bitmap_get (p->non_empty_event_type_bitmap, h[0]))
676 p->flags |= VLIB_PROCESS_IS_SUSPENDED_WAITING_FOR_EVENT;
678 clib_setjmp (&p->resume_longjmp, VLIB_PROCESS_RESUME_LONGJMP_SUSPEND);
679 if (r == VLIB_PROCESS_RESUME_LONGJMP_SUSPEND)
680 clib_longjmp (&p->return_longjmp,
681 VLIB_PROCESS_RETURN_LONGJMP_SUSPEND);
683 /* See if unknown event type has been signaled now. */
685 h = hash_get (p->event_type_index_by_type_opaque, with_type_opaque);
688 return vlib_process_get_events_helper (p, h[0], data_vector);
691 /** Suspend a cooperative multi-tasking thread
692 Waits for an event, or for the indicated number of seconds to elapse
693 @param vm - vlib_main_t pointer
694 @param dt - timeout, in seconds.
695 @returns the remaining time interval
699 vlib_process_wait_for_event_or_clock (vlib_main_t * vm, f64 dt)
701 vlib_node_main_t *nm = &vm->node_main;
706 p = vec_elt (nm->processes, nm->current_process_index);
708 if (vlib_process_suspend_time_is_zero (dt)
709 || !clib_bitmap_is_zero (p->non_empty_event_type_bitmap))
712 wakeup_time = vlib_time_now (vm) + dt;
714 /* Suspend waiting for both clock and event to occur. */
715 p->flags |= (VLIB_PROCESS_IS_SUSPENDED_WAITING_FOR_EVENT
716 | VLIB_PROCESS_IS_SUSPENDED_WAITING_FOR_CLOCK);
718 r = clib_setjmp (&p->resume_longjmp, VLIB_PROCESS_RESUME_LONGJMP_SUSPEND);
719 if (r == VLIB_PROCESS_RESUME_LONGJMP_SUSPEND)
721 p->resume_clock_interval = dt * 1e5;
722 clib_longjmp (&p->return_longjmp, VLIB_PROCESS_RETURN_LONGJMP_SUSPEND);
725 /* Return amount of time still left to sleep.
726 If <= 0 then we've been waken up by the clock (and not an event). */
727 return wakeup_time - vlib_time_now (vm);
730 always_inline vlib_process_event_type_t *
731 vlib_process_new_event_type (vlib_process_t * p, uword with_type_opaque)
733 vlib_process_event_type_t *et;
734 pool_get (p->event_type_pool, et);
735 et->opaque = with_type_opaque;
740 vlib_process_create_one_time_event (vlib_main_t * vm, uword node_index,
741 uword with_type_opaque)
743 vlib_node_main_t *nm = &vm->node_main;
744 vlib_node_t *n = vlib_get_node (vm, node_index);
745 vlib_process_t *p = vec_elt (nm->processes, n->runtime_index);
746 vlib_process_event_type_t *et;
749 et = vlib_process_new_event_type (p, with_type_opaque);
750 t = et - p->event_type_pool;
751 p->one_time_event_type_bitmap =
752 clib_bitmap_ori (p->one_time_event_type_bitmap, t);
757 vlib_process_delete_one_time_event (vlib_main_t * vm, uword node_index,
760 vlib_node_main_t *nm = &vm->node_main;
761 vlib_node_t *n = vlib_get_node (vm, node_index);
762 vlib_process_t *p = vec_elt (nm->processes, n->runtime_index);
764 ASSERT (clib_bitmap_get (p->one_time_event_type_bitmap, t));
765 vlib_process_free_event_type (p, t, /* is_one_time_event */ 1);
769 vlib_process_signal_event_helper (vlib_node_main_t * nm,
773 uword n_data_elts, uword n_data_elt_bytes)
775 uword p_flags, add_to_pending, delete_from_wheel;
776 void *data_to_be_written_by_caller;
778 ASSERT (!pool_is_free_index (p->event_type_pool, t));
780 vec_validate (p->pending_event_data_by_type_index, t);
782 /* Resize data vector and return caller's data to be written. */
784 void *data_vec = p->pending_event_data_by_type_index[t];
787 if (!data_vec && vec_len (nm->recycled_event_data_vectors))
789 data_vec = vec_pop (nm->recycled_event_data_vectors);
790 _vec_len (data_vec) = 0;
793 l = vec_len (data_vec);
795 data_vec = _vec_resize (data_vec,
796 /* length_increment */ n_data_elts,
797 /* total size after increment */
798 (l + n_data_elts) * n_data_elt_bytes,
799 /* header_bytes */ 0, /* data_align */ 0);
801 p->pending_event_data_by_type_index[t] = data_vec;
802 data_to_be_written_by_caller = data_vec + l * n_data_elt_bytes;
805 p->non_empty_event_type_bitmap =
806 clib_bitmap_ori (p->non_empty_event_type_bitmap, t);
810 /* Event was already signalled? */
811 add_to_pending = (p_flags & VLIB_PROCESS_RESUME_PENDING) == 0;
813 /* Process will resume when suspend time elapses? */
814 delete_from_wheel = 0;
815 if (p_flags & VLIB_PROCESS_IS_SUSPENDED_WAITING_FOR_CLOCK)
817 /* Waiting for both event and clock? */
818 if (p_flags & VLIB_PROCESS_IS_SUSPENDED_WAITING_FOR_EVENT)
819 delete_from_wheel = 1;
821 /* Waiting only for clock. Event will be queue and may be
822 handled when timer expires. */
826 /* Never add current process to pending vector since current process is
828 add_to_pending &= nm->current_process_index != n->runtime_index;
832 u32 x = vlib_timing_wheel_data_set_suspended_process (n->runtime_index);
833 p->flags = p_flags | VLIB_PROCESS_RESUME_PENDING;
834 vec_add1 (nm->data_from_advancing_timing_wheel, x);
835 if (delete_from_wheel)
836 TW (tw_timer_stop) ((TWT (tw_timer_wheel) *) nm->timing_wheel,
837 p->stop_timer_handle);
840 return data_to_be_written_by_caller;
844 vlib_process_signal_event_data (vlib_main_t * vm,
847 uword n_data_elts, uword n_data_elt_bytes)
849 vlib_node_main_t *nm = &vm->node_main;
850 vlib_node_t *n = vlib_get_node (vm, node_index);
851 vlib_process_t *p = vec_elt (nm->processes, n->runtime_index);
854 /* Must be in main thread */
855 ASSERT (vlib_get_thread_index () == 0);
857 h = hash_get (p->event_type_index_by_type_opaque, type_opaque);
860 vlib_process_event_type_t *et =
861 vlib_process_new_event_type (p, type_opaque);
862 t = et - p->event_type_pool;
863 hash_set (p->event_type_index_by_type_opaque, type_opaque, t);
868 return vlib_process_signal_event_helper (nm, n, p, t, n_data_elts,
873 vlib_process_signal_event_at_time (vlib_main_t * vm,
877 uword n_data_elts, uword n_data_elt_bytes)
879 vlib_node_main_t *nm = &vm->node_main;
880 vlib_node_t *n = vlib_get_node (vm, node_index);
881 vlib_process_t *p = vec_elt (nm->processes, n->runtime_index);
884 h = hash_get (p->event_type_index_by_type_opaque, type_opaque);
887 vlib_process_event_type_t *et =
888 vlib_process_new_event_type (p, type_opaque);
889 t = et - p->event_type_pool;
890 hash_set (p->event_type_index_by_type_opaque, type_opaque, t);
895 if (vlib_process_suspend_time_is_zero (dt))
896 return vlib_process_signal_event_helper (nm, n, p, t, n_data_elts,
900 vlib_signal_timed_event_data_t *te;
902 pool_get_aligned (nm->signal_timed_event_data_pool, te, sizeof (te[0]));
904 te->n_data_elts = n_data_elts;
905 te->n_data_elt_bytes = n_data_elt_bytes;
906 te->n_data_bytes = n_data_elts * n_data_elt_bytes;
908 /* Assert that structure fields are big enough. */
909 ASSERT (te->n_data_elts == n_data_elts);
910 ASSERT (te->n_data_elt_bytes == n_data_elt_bytes);
911 ASSERT (te->n_data_bytes == n_data_elts * n_data_elt_bytes);
913 te->process_node_index = n->runtime_index;
914 te->event_type_index = t;
916 p->stop_timer_handle =
917 TW (tw_timer_start) ((TWT (tw_timer_wheel) *) nm->timing_wheel,
918 vlib_timing_wheel_data_set_timed_event
919 (te - nm->signal_timed_event_data_pool),
921 (vlib_time_now (vm) + dt) * 1e5);
923 /* Inline data big enough to hold event? */
924 if (te->n_data_bytes < sizeof (te->inline_event_data))
925 return te->inline_event_data;
928 te->event_data_as_vector = 0;
929 vec_resize (te->event_data_as_vector, te->n_data_bytes);
930 return te->event_data_as_vector;
936 vlib_process_signal_one_time_event_data (vlib_main_t * vm,
940 uword n_data_elt_bytes)
942 vlib_node_main_t *nm = &vm->node_main;
943 vlib_node_t *n = vlib_get_node (vm, node_index);
944 vlib_process_t *p = vec_elt (nm->processes, n->runtime_index);
945 return vlib_process_signal_event_helper (nm, n, p, type_index, n_data_elts,
950 vlib_process_signal_event (vlib_main_t * vm,
951 uword node_index, uword type_opaque, uword data)
953 uword *d = vlib_process_signal_event_data (vm, node_index, type_opaque,
954 1 /* elts */ , sizeof (uword));
959 vlib_process_signal_event_pointer (vlib_main_t * vm,
961 uword type_opaque, void *data)
963 void **d = vlib_process_signal_event_data (vm, node_index, type_opaque,
964 1 /* elts */ , sizeof (data));
969 * Signal event to process from any thread.
971 * When in doubt, use this.
974 vlib_process_signal_event_mt (vlib_main_t * vm,
975 uword node_index, uword type_opaque, uword data)
977 if (vlib_get_thread_index () != 0)
979 vlib_process_signal_event_mt_args_t args = {
980 .node_index = node_index,
981 .type_opaque = type_opaque,
984 vlib_rpc_call_main_thread (vlib_process_signal_event_mt_helper,
985 (u8 *) & args, sizeof (args));
988 vlib_process_signal_event (vm, node_index, type_opaque, data);
992 vlib_process_signal_one_time_event (vlib_main_t * vm,
994 uword type_index, uword data)
997 vlib_process_signal_one_time_event_data (vm, node_index, type_index,
998 1 /* elts */ , sizeof (uword));
1003 vlib_signal_one_time_waiting_process (vlib_main_t * vm,
1004 vlib_one_time_waiting_process_t * p)
1006 vlib_process_signal_one_time_event (vm, p->node_index, p->one_time_event,
1008 memset (p, ~0, sizeof (p[0]));
1012 vlib_signal_one_time_waiting_process_vector (vlib_main_t * vm,
1013 vlib_one_time_waiting_process_t
1016 vlib_one_time_waiting_process_t *wp;
1017 vec_foreach (wp, *wps) vlib_signal_one_time_waiting_process (vm, wp);
1022 vlib_current_process_wait_for_one_time_event (vlib_main_t * vm,
1023 vlib_one_time_waiting_process_t
1026 p->node_index = vlib_current_process (vm);
1027 p->one_time_event = vlib_process_create_one_time_event (vm, p->node_index, /* type opaque */
1029 vlib_process_wait_for_one_time_event (vm,
1030 /* don't care about data */ 0,
1035 vlib_current_process_wait_for_one_time_event_vector (vlib_main_t * vm,
1036 vlib_one_time_waiting_process_t
1039 vlib_one_time_waiting_process_t *wp;
1040 vec_add2 (*wps, wp, 1);
1041 vlib_current_process_wait_for_one_time_event (vm, wp);
1045 vlib_node_runtime_update_main_loop_vector_stats (vlib_main_t * vm,
1046 vlib_node_runtime_t * node,
1052 ASSERT (is_pow2 (ARRAY_LEN (node->main_loop_vector_stats)));
1053 i = ((vm->main_loop_count >> VLIB_LOG2_MAIN_LOOPS_PER_STATS_UPDATE)
1054 & (ARRAY_LEN (node->main_loop_vector_stats) - 1));
1057 d = ((vm->main_loop_count >> VLIB_LOG2_MAIN_LOOPS_PER_STATS_UPDATE)
1059 (node->main_loop_count_last_dispatch >>
1060 VLIB_LOG2_MAIN_LOOPS_PER_STATS_UPDATE));
1061 vi0 = node->main_loop_vector_stats[i0];
1062 vi1 = node->main_loop_vector_stats[i1];
1063 vi0 = d == 0 ? vi0 : 0;
1064 vi1 = d <= 1 ? vi1 : 0;
1066 node->main_loop_vector_stats[i0] = vi0;
1067 node->main_loop_vector_stats[i1] = vi1;
1068 node->main_loop_count_last_dispatch = vm->main_loop_count;
1069 /* Return previous counter. */
1070 return node->main_loop_vector_stats[i1];
1074 vlib_node_vectors_per_main_loop_as_float (vlib_main_t * vm, u32 node_index)
1076 vlib_node_runtime_t *rt = vlib_node_get_runtime (vm, node_index);
1079 v = vlib_node_runtime_update_main_loop_vector_stats (vm, rt, /* n_vectors */
1081 return (f64) v / (1 << VLIB_LOG2_MAIN_LOOPS_PER_STATS_UPDATE);
1085 vlib_node_vectors_per_main_loop_as_integer (vlib_main_t * vm, u32 node_index)
1087 vlib_node_runtime_t *rt = vlib_node_get_runtime (vm, node_index);
1090 v = vlib_node_runtime_update_main_loop_vector_stats (vm, rt, /* n_vectors */
1092 return v >> VLIB_LOG2_MAIN_LOOPS_PER_STATS_UPDATE;
1096 vlib_frame_free (vlib_main_t * vm, vlib_node_runtime_t * r, vlib_frame_t * f);
1098 /* Return the edge index if present, ~0 otherwise */
1099 uword vlib_node_get_next (vlib_main_t * vm, uword node, uword next_node);
1101 /* Add next node to given node in given slot. */
1103 vlib_node_add_next_with_slot (vlib_main_t * vm,
1104 uword node, uword next_node, uword slot);
1106 /* As above but adds to end of node's next vector. */
1108 vlib_node_add_next (vlib_main_t * vm, uword node, uword next_node)
1110 return vlib_node_add_next_with_slot (vm, node, next_node, ~0);
1113 /* Add next node to given node in given slot. */
1115 vlib_node_add_named_next_with_slot (vlib_main_t * vm,
1116 uword node, char *next_name, uword slot);
1118 /* As above but adds to end of node's next vector. */
1120 vlib_node_add_named_next (vlib_main_t * vm, uword node, char *name)
1122 return vlib_node_add_named_next_with_slot (vm, node, name, ~0);
1125 /* Query node given name. */
1126 vlib_node_t *vlib_get_node_by_name (vlib_main_t * vm, u8 * name);
1128 /* Rename a node. */
1129 void vlib_node_rename (vlib_main_t * vm, u32 node_index, char *fmt, ...);
1131 /* Register new packet processing node. Nodes can be registered
1132 dynamically via this call or statically via the VLIB_REGISTER_NODE
1134 u32 vlib_register_node (vlib_main_t * vm, vlib_node_registration_t * r);
1136 /* Register all static nodes registered via VLIB_REGISTER_NODE. */
1137 void vlib_register_all_static_nodes (vlib_main_t * vm);
1139 /* Start a process. */
1140 void vlib_start_process (vlib_main_t * vm, uword process_index);
1142 /* Sync up runtime and main node stats. */
1143 void vlib_node_sync_stats (vlib_main_t * vm, vlib_node_t * n);
1145 /* Node graph initialization function. */
1146 clib_error_t *vlib_node_main_init (vlib_main_t * vm);
1148 format_function_t format_vlib_node_graph;
1149 format_function_t format_vlib_node_name;
1150 format_function_t format_vlib_next_node_name;
1151 format_function_t format_vlib_node_and_next;
1152 format_function_t format_vlib_cpu_time;
1153 format_function_t format_vlib_time;
1154 /* Parse node name -> node index. */
1155 unformat_function_t unformat_vlib_node;
1158 vlib_node_increment_counter (vlib_main_t * vm, u32 node_index,
1159 u32 counter_index, u64 increment)
1161 vlib_node_t *n = vlib_get_node (vm, node_index);
1162 vlib_error_main_t *em = &vm->error_main;
1163 u32 node_counter_base_index = n->error_heap_index;
1164 em->counters[node_counter_base_index + counter_index] += increment;
1167 #endif /* included_vlib_node_funcs_h */
1170 * fd.io coding-style-patch-verification: ON
1173 * eval: (c-set-style "gnu")