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/clib.h>
49 #include <vppinfra/fifo.h>
50 #include <vppinfra/tw_timer_1t_3w_1024sl_ov.h>
51 #include <vppinfra/interrupt.h>
53 #ifdef CLIB_SANITIZE_ADDR
54 #include <sanitizer/asan_interface.h>
57 static_always_inline void
58 vlib_process_start_switch_stack (vlib_main_t * vm, vlib_process_t * p)
60 #ifdef CLIB_SANITIZE_ADDR
61 void *stack = p ? (void *) p->stack : vlib_thread_stacks[vm->thread_index];
63 p ? (1ULL < p->log2_n_stack_bytes) : VLIB_THREAD_STACK_SIZE;
64 __sanitizer_start_switch_fiber (&vm->asan_stack_save, stack, stack_bytes);
68 static_always_inline void
69 vlib_process_finish_switch_stack (vlib_main_t * vm)
71 #ifdef CLIB_SANITIZE_ADDR
72 const void *bottom_old;
75 __sanitizer_finish_switch_fiber (&vm->asan_stack_save, &bottom_old,
80 /** \brief Get vlib node by index.
81 @warning This function will ASSERT if @c i is out of range.
82 @param vm vlib_main_t pointer, varies by thread
84 @return pointer to the requested vlib_node_t.
87 always_inline vlib_node_t *
88 vlib_get_node (vlib_main_t * vm, u32 i)
90 return vec_elt (vm->node_main.nodes, i);
93 /** \brief Get vlib node by graph arc (next) index.
94 @param vm vlib_main_t pointer, varies by thread
95 @param node_index index of original node
96 @param next_index graph arc index
97 @return pointer to the vlib_node_t at the end of the indicated arc
100 always_inline vlib_node_t *
101 vlib_get_next_node (vlib_main_t * vm, u32 node_index, u32 next_index)
103 vlib_node_main_t *nm = &vm->node_main;
106 n = vec_elt (nm->nodes, node_index);
107 ASSERT (next_index < vec_len (n->next_nodes));
108 return vlib_get_node (vm, n->next_nodes[next_index]);
111 /** \brief Get node runtime by node index.
112 @param vm vlib_main_t pointer, varies by thread
113 @param node_index index of node
114 @return pointer to the indicated vlib_node_runtime_t
117 always_inline vlib_node_runtime_t *
118 vlib_node_get_runtime (vlib_main_t * vm, u32 node_index)
120 vlib_node_main_t *nm = &vm->node_main;
121 vlib_node_t *n = vec_elt (nm->nodes, node_index);
123 if (n->type != VLIB_NODE_TYPE_PROCESS)
124 return vec_elt_at_index (nm->nodes_by_type[n->type], n->runtime_index);
127 p = vec_elt (nm->processes, n->runtime_index);
128 return &p->node_runtime;
132 /** \brief Get node runtime private data by node index.
133 @param vm vlib_main_t pointer, varies by thread
134 @param node_index index of the node
135 @return pointer to the indicated vlib_node_runtime_t private data
139 vlib_node_get_runtime_data (vlib_main_t * vm, u32 node_index)
141 vlib_node_runtime_t *r = vlib_node_get_runtime (vm, node_index);
142 return r->runtime_data;
145 /** \brief Set node runtime private data.
146 @param vm vlib_main_t pointer, varies by thread
147 @param node_index index of the node
148 @param runtime_data arbitrary runtime private data
149 @param n_runtime_data_bytes size of runtime private data
153 vlib_node_set_runtime_data (vlib_main_t * vm, u32 node_index,
154 void *runtime_data, u32 n_runtime_data_bytes)
156 vlib_node_t *n = vlib_get_node (vm, node_index);
157 vlib_node_runtime_t *r = vlib_node_get_runtime (vm, node_index);
159 n->runtime_data_bytes = n_runtime_data_bytes;
160 vec_free (n->runtime_data);
161 vec_add (n->runtime_data, runtime_data, n_runtime_data_bytes);
163 ASSERT (vec_len (n->runtime_data) <= sizeof (vlib_node_runtime_t) -
164 STRUCT_OFFSET_OF (vlib_node_runtime_t, runtime_data));
166 if (vec_len (n->runtime_data) > 0)
167 clib_memcpy_fast (r->runtime_data, n->runtime_data,
168 vec_len (n->runtime_data));
171 /** \brief Set node dispatch state.
172 @param vm vlib_main_t pointer, varies by thread
173 @param node_index index of the node
174 @param new_state new state for node, see vlib_node_state_t
177 vlib_node_set_state (vlib_main_t * vm, u32 node_index,
178 vlib_node_state_t new_state)
180 vlib_node_main_t *nm = &vm->node_main;
182 vlib_node_runtime_t *r;
184 n = vec_elt (nm->nodes, node_index);
185 if (n->type == VLIB_NODE_TYPE_PROCESS)
187 vlib_process_t *p = vec_elt (nm->processes, n->runtime_index);
188 r = &p->node_runtime;
190 /* When disabling make sure flags are cleared. */
191 p->flags &= ~(VLIB_PROCESS_RESUME_PENDING
192 | VLIB_PROCESS_IS_SUSPENDED_WAITING_FOR_CLOCK
193 | VLIB_PROCESS_IS_SUSPENDED_WAITING_FOR_EVENT);
196 r = vec_elt_at_index (nm->nodes_by_type[n->type], n->runtime_index);
198 ASSERT (new_state < VLIB_N_NODE_STATE);
200 if (n->type == VLIB_NODE_TYPE_INPUT)
202 ASSERT (nm->input_node_counts_by_state[n->state] > 0);
203 nm->input_node_counts_by_state[n->state] -= 1;
204 nm->input_node_counts_by_state[new_state] += 1;
207 if (PREDICT_FALSE (r->state == VLIB_NODE_STATE_DISABLED))
208 vlib_node_runtime_perf_counter (vm, r, 0, 0, 0,
209 VLIB_NODE_RUNTIME_PERF_RESET);
211 n->state = new_state;
212 r->state = new_state;
215 /** \brief Get node dispatch state.
216 @param vm vlib_main_t pointer, varies by thread
217 @param node_index index of the node
218 @return state for node, see vlib_node_state_t
220 always_inline vlib_node_state_t
221 vlib_node_get_state (vlib_main_t * vm, u32 node_index)
223 vlib_node_main_t *nm = &vm->node_main;
225 n = vec_elt (nm->nodes, node_index);
230 vlib_node_set_flag (vlib_main_t *vm, u32 node_index, u16 flag, u8 enable)
232 vlib_node_runtime_t *r;
235 n = vlib_get_node (vm, node_index);
236 r = vlib_node_get_runtime (vm, node_index);
251 vlib_node_set_interrupt_pending (vlib_main_t *vm, u32 node_index)
253 vlib_node_main_t *nm = &vm->node_main;
254 vlib_node_t *n = vec_elt (nm->nodes, node_index);
257 if (n->type == VLIB_NODE_TYPE_INPUT)
258 interrupts = nm->input_node_interrupts;
259 else if (n->type == VLIB_NODE_TYPE_PRE_INPUT)
260 interrupts = nm->pre_input_node_interrupts;
264 if (vm != vlib_get_main ())
265 clib_interrupt_set_atomic (interrupts, n->runtime_index);
267 clib_interrupt_set (interrupts, n->runtime_index);
269 __atomic_store_n (&nm->pending_interrupts, 1, __ATOMIC_RELEASE);
272 always_inline vlib_process_t *
273 vlib_get_process_from_node (vlib_main_t * vm, vlib_node_t * node)
275 vlib_node_main_t *nm = &vm->node_main;
276 ASSERT (node->type == VLIB_NODE_TYPE_PROCESS);
277 return vec_elt (nm->processes, node->runtime_index);
280 always_inline vlib_frame_t *
281 vlib_get_frame (vlib_main_t * vm, vlib_frame_t * f)
284 ASSERT (f->frame_flags & VLIB_FRAME_IS_ALLOCATED);
289 vlib_frame_no_append (vlib_frame_t * f)
291 f->frame_flags |= VLIB_FRAME_NO_APPEND;
294 /** \brief Get pointer to frame vector data.
295 @param f vlib_frame_t pointer
296 @return pointer to first vector element in frame
299 vlib_frame_vector_args (vlib_frame_t * f)
301 ASSERT (f->vector_offset);
302 return (void *) f + f->vector_offset;
305 /** \brief Get pointer to frame vector aux data.
306 @param f vlib_frame_t pointer
307 @return pointer to first vector aux data element in frame
310 vlib_frame_aux_args (vlib_frame_t *f)
312 ASSERT (f->aux_offset);
313 return (void *) f + f->aux_offset;
316 /** \brief Get pointer to frame scalar data.
318 @param f vlib_frame_t pointer
320 @return arbitrary node scalar data
322 @sa vlib_frame_vector_args
325 vlib_frame_scalar_args (vlib_frame_t * f)
327 ASSERT (f->scalar_offset);
328 return (void *) f + f->scalar_offset;
331 always_inline vlib_next_frame_t *
332 vlib_node_runtime_get_next_frame (vlib_main_t * vm,
333 vlib_node_runtime_t * n, u32 next_index)
335 vlib_node_main_t *nm = &vm->node_main;
336 vlib_next_frame_t *nf;
338 ASSERT (next_index < n->n_next_nodes);
339 nf = vec_elt_at_index (nm->next_frames, n->next_frame_index + next_index);
343 vlib_node_t *node, *next;
344 node = vec_elt (nm->nodes, n->node_index);
345 next = vec_elt (nm->nodes, node->next_nodes[next_index]);
346 ASSERT (nf->node_runtime_index == next->runtime_index);
352 /** \brief Get pointer to frame by (@c node_index, @c next_index).
354 @warning This is not a function that you should call directly.
355 See @ref vlib_get_next_frame instead.
357 @param vm vlib_main_t pointer, varies by thread
358 @param node_index index of the node
359 @param next_index graph arc index
361 @return pointer to the requested vlib_next_frame_t
363 @sa vlib_get_next_frame
366 always_inline vlib_next_frame_t *
367 vlib_node_get_next_frame (vlib_main_t * vm, u32 node_index, u32 next_index)
369 vlib_node_main_t *nm = &vm->node_main;
371 vlib_node_runtime_t *r;
373 n = vec_elt (nm->nodes, node_index);
374 r = vec_elt_at_index (nm->nodes_by_type[n->type], n->runtime_index);
375 return vlib_node_runtime_get_next_frame (vm, r, next_index);
378 vlib_frame_t *vlib_get_next_frame_internal (vlib_main_t * vm,
379 vlib_node_runtime_t * node,
381 u32 alloc_new_frame);
383 #define vlib_get_next_frame_macro(vm, node, next_index, vectors, \
384 n_vectors_left, alloc_new_frame) \
387 vlib_frame_t *_f = vlib_get_next_frame_internal ( \
388 (vm), (node), (next_index), (alloc_new_frame)); \
389 u32 _n = _f->n_vectors; \
390 (vectors) = vlib_frame_vector_args (_f) + _n * sizeof ((vectors)[0]); \
391 (n_vectors_left) = VLIB_FRAME_SIZE - _n; \
395 #define vlib_get_next_frame_macro_with_aux(vm, node, next_index, vectors, \
396 n_vectors_left, alloc_new_frame, \
397 aux_data, maybe_no_aux) \
400 vlib_frame_t *_f = vlib_get_next_frame_internal ( \
401 (vm), (node), (next_index), (alloc_new_frame)); \
402 u32 _n = _f->n_vectors; \
403 (vectors) = vlib_frame_vector_args (_f) + _n * sizeof ((vectors)[0]); \
404 if ((maybe_no_aux) && (_f)->aux_offset == 0) \
407 (aux_data) = vlib_frame_aux_args (_f) + _n * sizeof ((aux_data)[0]); \
408 (n_vectors_left) = VLIB_FRAME_SIZE - _n; \
412 /** \brief Get pointer to next frame vector data by
413 (@c vlib_node_runtime_t, @c next_index).
414 Standard single/dual loop boilerplate element.
415 @attention This is a MACRO, with SIDE EFFECTS.
417 @param vm vlib_main_t pointer, varies by thread
418 @param node current node vlib_node_runtime_t pointer
419 @param next_index requested graph arc index
421 @return @c vectors -- pointer to next available vector slot
422 @return @c n_vectors_left -- number of vector slots available
424 #define vlib_get_next_frame(vm, node, next_index, vectors, n_vectors_left) \
425 vlib_get_next_frame_macro (vm, node, next_index, vectors, n_vectors_left, \
426 /* alloc new frame */ 0)
428 #define vlib_get_new_next_frame(vm, node, next_index, vectors, \
430 vlib_get_next_frame_macro (vm, node, next_index, vectors, n_vectors_left, \
431 /* alloc new frame */ 1)
433 /** \brief Get pointer to next frame vector data and next frame aux data by
434 (@c vlib_node_runtime_t, @c next_index).
435 Standard single/dual loop boilerplate element.
436 @attention This is a MACRO, with SIDE EFFECTS.
437 @attention This MACRO is unsafe in case the next node does not support
440 @param vm vlib_main_t pointer, varies by thread
441 @param node current node vlib_node_runtime_t pointer
442 @param next_index requested graph arc index
444 @return @c vectors -- pointer to next available vector slot
445 @return @c aux_data -- pointer to next available aux data slot
446 @return @c n_vectors_left -- number of vector slots available
448 #define vlib_get_next_frame_with_aux(vm, node, next_index, vectors, aux_data, \
450 vlib_get_next_frame_macro_with_aux ( \
451 vm, node, next_index, vectors, n_vectors_left, /* alloc new frame */ 0, \
452 aux_data, /* maybe_no_aux */ 0)
454 #define vlib_get_new_next_frame_with_aux(vm, node, next_index, vectors, \
455 aux_data, n_vectors_left) \
456 vlib_get_next_frame_macro_with_aux ( \
457 vm, node, next_index, vectors, n_vectors_left, /* alloc new frame */ 1, \
458 aux_data, /* maybe_no_aux */ 0)
460 /** \brief Get pointer to next frame vector data and next frame aux data by
461 (@c vlib_node_runtime_t, @c next_index).
462 Standard single/dual loop boilerplate element.
463 @attention This is a MACRO, with SIDE EFFECTS.
464 @attention This MACRO is safe in case the next node does not support aux_data.
465 In that case aux_data is set to NULL.
467 @param vm vlib_main_t pointer, varies by thread
468 @param node current node vlib_node_runtime_t pointer
469 @param next_index requested graph arc index
471 @return @c vectors -- pointer to next available vector slot
472 @return @c aux_data -- pointer to next available aux data slot
473 @return @c n_vectors_left -- number of vector slots available
475 #define vlib_get_next_frame_with_aux_safe(vm, node, next_index, vectors, \
476 aux_data, n_vectors_left) \
477 vlib_get_next_frame_macro_with_aux ( \
478 vm, node, next_index, vectors, n_vectors_left, /* alloc new frame */ 0, \
479 aux_data, /* maybe_no_aux */ 1)
481 #define vlib_get_new_next_frame_with_aux_safe(vm, node, next_index, vectors, \
482 aux_data, n_vectors_left) \
483 vlib_get_next_frame_macro_with_aux ( \
484 vm, node, next_index, vectors, n_vectors_left, /* alloc new frame */ 1, \
485 aux_data, /* maybe_no_aux */ 1)
487 /** \brief Release pointer to next frame vector data.
488 Standard single/dual loop boilerplate element.
489 @param vm vlib_main_t pointer, varies by thread
490 @param r current node vlib_node_runtime_t pointer
491 @param next_index graph arc index
492 @param n_packets_left number of slots still available in vector
495 vlib_put_next_frame (vlib_main_t * vm,
496 vlib_node_runtime_t * r,
497 u32 next_index, u32 n_packets_left);
499 /* Combination get plus put. Returns vector argument just added. */
500 #define vlib_set_next_frame(vm,node,next_index,v) \
503 vlib_get_next_frame ((vm), (node), (next_index), (v), _n_left); \
504 ASSERT (_n_left > 0); \
505 vlib_put_next_frame ((vm), (node), (next_index), _n_left - 1); \
509 #define vlib_set_next_frame_with_aux_safe(vm, node, next_index, v, aux) \
512 vlib_get_next_frame_with_aux_safe ((vm), (node), (next_index), (v), \
514 ASSERT (_n_left > 0); \
515 vlib_put_next_frame ((vm), (node), (next_index), _n_left - 1); \
520 vlib_set_next_frame_buffer (vlib_main_t * vm,
521 vlib_node_runtime_t * node,
522 u32 next_index, u32 buffer_index)
525 p = vlib_set_next_frame (vm, node, next_index, p);
530 vlib_set_next_frame_buffer_with_aux_safe (vlib_main_t *vm,
531 vlib_node_runtime_t *node,
532 u32 next_index, u32 buffer_index,
537 p = vlib_set_next_frame_with_aux_safe (vm, node, next_index, p, a);
543 vlib_frame_t *vlib_get_frame_to_node (vlib_main_t * vm, u32 to_node_index);
544 void vlib_put_frame_to_node (vlib_main_t * vm, u32 to_node_index,
548 vlib_in_process_context (vlib_main_t * vm)
550 return vm->node_main.current_process_index != ~0;
553 always_inline vlib_process_t *
554 vlib_get_current_process (vlib_main_t * vm)
556 vlib_node_main_t *nm = &vm->node_main;
557 if (vlib_in_process_context (vm))
558 return vec_elt (nm->processes, nm->current_process_index);
563 vlib_current_process (vlib_main_t * vm)
565 return vlib_get_current_process (vm)->node_runtime.node_index;
569 vlib_get_current_process_node_index (vlib_main_t * vm)
571 vlib_process_t *process = vlib_get_current_process (vm);
572 return process->node_runtime.node_index;
575 /** Returns TRUE if a process suspend time is less than 10us
576 @param dt - remaining poll time in seconds
577 @returns 1 if dt < 10e-6, 0 otherwise
580 vlib_process_suspend_time_is_zero (f64 dt)
585 /** Suspend a vlib cooperative multi-tasking thread for a period of time
586 @param vm - vlib_main_t *
587 @param dt - suspend interval in seconds
588 @returns VLIB_PROCESS_RESUME_LONGJMP_RESUME, routinely ignored
592 vlib_process_suspend (vlib_main_t * vm, f64 dt)
595 vlib_node_main_t *nm = &vm->node_main;
596 vlib_process_t *p = vec_elt (nm->processes, nm->current_process_index);
598 if (vlib_process_suspend_time_is_zero (dt))
599 return VLIB_PROCESS_RESUME_LONGJMP_RESUME;
601 p->flags |= VLIB_PROCESS_IS_SUSPENDED_WAITING_FOR_CLOCK;
602 r = clib_setjmp (&p->resume_longjmp, VLIB_PROCESS_RESUME_LONGJMP_SUSPEND);
603 if (r == VLIB_PROCESS_RESUME_LONGJMP_SUSPEND)
605 /* expiration time in 10us ticks */
606 p->resume_clock_interval = dt * 1e5;
607 vlib_process_start_switch_stack (vm, 0);
608 clib_longjmp (&p->return_longjmp, VLIB_PROCESS_RETURN_LONGJMP_SUSPEND);
611 vlib_process_finish_switch_stack (vm);
617 vlib_process_free_event_type (vlib_process_t * p, uword t,
618 uword is_one_time_event)
620 ASSERT (!pool_is_free_index (p->event_type_pool, t));
621 pool_put_index (p->event_type_pool, t);
622 if (is_one_time_event)
623 p->one_time_event_type_bitmap =
624 clib_bitmap_andnoti (p->one_time_event_type_bitmap, t);
628 vlib_process_maybe_free_event_type (vlib_process_t * p, uword t)
630 ASSERT (!pool_is_free_index (p->event_type_pool, t));
631 if (clib_bitmap_get (p->one_time_event_type_bitmap, t))
632 vlib_process_free_event_type (p, t, /* is_one_time_event */ 1);
636 vlib_process_get_event_data (vlib_main_t * vm,
637 uword * return_event_type_opaque)
639 vlib_node_main_t *nm = &vm->node_main;
641 vlib_process_event_type_t *et;
643 void *event_data_vector;
645 p = vec_elt (nm->processes, nm->current_process_index);
647 /* Find first type with events ready.
648 Return invalid type when there's nothing there. */
649 t = clib_bitmap_first_set (p->non_empty_event_type_bitmap);
653 p->non_empty_event_type_bitmap =
654 clib_bitmap_andnoti (p->non_empty_event_type_bitmap, t);
656 ASSERT (_vec_len (p->pending_event_data_by_type_index[t]) > 0);
657 event_data_vector = p->pending_event_data_by_type_index[t];
658 p->pending_event_data_by_type_index[t] = 0;
660 et = pool_elt_at_index (p->event_type_pool, t);
662 /* Return user's opaque value and possibly index. */
663 *return_event_type_opaque = et->opaque;
665 vlib_process_maybe_free_event_type (p, t);
667 return event_data_vector;
670 /* Return event data vector for later reuse. We reuse event data to avoid
671 repeatedly allocating event vectors in cases where we care about speed. */
673 vlib_process_put_event_data (vlib_main_t * vm, void *event_data)
675 vlib_node_main_t *nm = &vm->node_main;
676 vec_add1 (nm->recycled_event_data_vectors, event_data);
679 /** Return the first event type which has occurred and a vector of per-event
680 data of that type, or a timeout indication
682 @param vm - vlib_main_t pointer
683 @param data_vector - pointer to a (uword *) vector to receive event data
684 @returns either an event type and a vector of per-event instance data,
685 or ~0 to indicate a timeout.
689 vlib_process_get_events (vlib_main_t * vm, uword ** data_vector)
691 vlib_node_main_t *nm = &vm->node_main;
693 vlib_process_event_type_t *et;
696 p = vec_elt (nm->processes, nm->current_process_index);
698 /* Find first type with events ready.
699 Return invalid type when there's nothing there. */
700 t = clib_bitmap_first_set (p->non_empty_event_type_bitmap);
704 p->non_empty_event_type_bitmap =
705 clib_bitmap_andnoti (p->non_empty_event_type_bitmap, t);
707 l = _vec_len (p->pending_event_data_by_type_index[t]);
709 vec_add (*data_vector, p->pending_event_data_by_type_index[t], l);
710 vec_set_len (p->pending_event_data_by_type_index[t], 0);
712 et = pool_elt_at_index (p->event_type_pool, t);
714 /* Return user's opaque value. */
717 vlib_process_maybe_free_event_type (p, t);
723 vlib_process_get_events_helper (vlib_process_t * p, uword t,
724 uword ** data_vector)
728 p->non_empty_event_type_bitmap =
729 clib_bitmap_andnoti (p->non_empty_event_type_bitmap, t);
731 l = _vec_len (p->pending_event_data_by_type_index[t]);
733 vec_add (*data_vector, p->pending_event_data_by_type_index[t], l);
734 vec_set_len (p->pending_event_data_by_type_index[t], 0);
736 vlib_process_maybe_free_event_type (p, t);
741 /* As above but query as specified type of event. Returns number of
744 vlib_process_get_events_with_type (vlib_main_t * vm, uword ** data_vector,
745 uword with_type_opaque)
747 vlib_node_main_t *nm = &vm->node_main;
751 p = vec_elt (nm->processes, nm->current_process_index);
752 h = hash_get (p->event_type_index_by_type_opaque, with_type_opaque);
754 /* This can happen when an event has not yet been
755 signaled with given opaque type. */
759 if (!clib_bitmap_get (p->non_empty_event_type_bitmap, t))
762 return vlib_process_get_events_helper (p, t, data_vector);
765 always_inline uword *
766 vlib_process_wait_for_event (vlib_main_t * vm)
768 vlib_node_main_t *nm = &vm->node_main;
772 p = vec_elt (nm->processes, nm->current_process_index);
773 if (clib_bitmap_is_zero (p->non_empty_event_type_bitmap))
775 p->flags |= VLIB_PROCESS_IS_SUSPENDED_WAITING_FOR_EVENT;
777 clib_setjmp (&p->resume_longjmp, VLIB_PROCESS_RESUME_LONGJMP_SUSPEND);
778 if (r == VLIB_PROCESS_RESUME_LONGJMP_SUSPEND)
780 vlib_process_start_switch_stack (vm, 0);
781 clib_longjmp (&p->return_longjmp,
782 VLIB_PROCESS_RETURN_LONGJMP_SUSPEND);
785 vlib_process_finish_switch_stack (vm);
788 return p->non_empty_event_type_bitmap;
792 vlib_process_wait_for_one_time_event (vlib_main_t * vm,
793 uword ** data_vector,
794 uword with_type_index)
796 vlib_node_main_t *nm = &vm->node_main;
800 p = vec_elt (nm->processes, nm->current_process_index);
801 ASSERT (!pool_is_free_index (p->event_type_pool, with_type_index));
802 while (!clib_bitmap_get (p->non_empty_event_type_bitmap, with_type_index))
804 p->flags |= VLIB_PROCESS_IS_SUSPENDED_WAITING_FOR_EVENT;
806 clib_setjmp (&p->resume_longjmp, VLIB_PROCESS_RESUME_LONGJMP_SUSPEND);
807 if (r == VLIB_PROCESS_RESUME_LONGJMP_SUSPEND)
809 vlib_process_start_switch_stack (vm, 0);
810 clib_longjmp (&p->return_longjmp,
811 VLIB_PROCESS_RETURN_LONGJMP_SUSPEND);
814 vlib_process_finish_switch_stack (vm);
817 return vlib_process_get_events_helper (p, with_type_index, data_vector);
821 vlib_process_wait_for_event_with_type (vlib_main_t * vm,
822 uword ** data_vector,
823 uword with_type_opaque)
825 vlib_node_main_t *nm = &vm->node_main;
829 p = vec_elt (nm->processes, nm->current_process_index);
830 h = hash_get (p->event_type_index_by_type_opaque, with_type_opaque);
831 while (!h || !clib_bitmap_get (p->non_empty_event_type_bitmap, h[0]))
833 p->flags |= VLIB_PROCESS_IS_SUSPENDED_WAITING_FOR_EVENT;
835 clib_setjmp (&p->resume_longjmp, VLIB_PROCESS_RESUME_LONGJMP_SUSPEND);
836 if (r == VLIB_PROCESS_RESUME_LONGJMP_SUSPEND)
838 vlib_process_start_switch_stack (vm, 0);
839 clib_longjmp (&p->return_longjmp,
840 VLIB_PROCESS_RETURN_LONGJMP_SUSPEND);
843 vlib_process_finish_switch_stack (vm);
845 /* See if unknown event type has been signaled now. */
847 h = hash_get (p->event_type_index_by_type_opaque, with_type_opaque);
850 return vlib_process_get_events_helper (p, h[0], data_vector);
853 /** Suspend a cooperative multi-tasking thread
854 Waits for an event, or for the indicated number of seconds to elapse
855 @param vm - vlib_main_t pointer
856 @param dt - timeout, in seconds.
857 @returns the remaining time interval
861 vlib_process_wait_for_event_or_clock (vlib_main_t * vm, f64 dt)
863 vlib_node_main_t *nm = &vm->node_main;
868 p = vec_elt (nm->processes, nm->current_process_index);
870 if (vlib_process_suspend_time_is_zero (dt)
871 || !clib_bitmap_is_zero (p->non_empty_event_type_bitmap))
874 wakeup_time = vlib_time_now (vm) + dt;
876 /* Suspend waiting for both clock and event to occur. */
877 p->flags |= (VLIB_PROCESS_IS_SUSPENDED_WAITING_FOR_EVENT
878 | VLIB_PROCESS_IS_SUSPENDED_WAITING_FOR_CLOCK);
880 r = clib_setjmp (&p->resume_longjmp, VLIB_PROCESS_RESUME_LONGJMP_SUSPEND);
881 if (r == VLIB_PROCESS_RESUME_LONGJMP_SUSPEND)
883 p->resume_clock_interval = dt * 1e5;
884 vlib_process_start_switch_stack (vm, 0);
885 clib_longjmp (&p->return_longjmp, VLIB_PROCESS_RETURN_LONGJMP_SUSPEND);
888 vlib_process_finish_switch_stack (vm);
890 /* Return amount of time still left to sleep.
891 If <= 0 then we've been waken up by the clock (and not an event). */
892 return wakeup_time - vlib_time_now (vm);
895 always_inline vlib_process_event_type_t *
896 vlib_process_new_event_type (vlib_process_t * p, uword with_type_opaque)
898 vlib_process_event_type_t *et;
899 pool_get (p->event_type_pool, et);
900 et->opaque = with_type_opaque;
905 vlib_process_create_one_time_event (vlib_main_t * vm, uword node_index,
906 uword with_type_opaque)
908 vlib_node_main_t *nm = &vm->node_main;
909 vlib_node_t *n = vlib_get_node (vm, node_index);
910 vlib_process_t *p = vec_elt (nm->processes, n->runtime_index);
911 vlib_process_event_type_t *et;
914 et = vlib_process_new_event_type (p, with_type_opaque);
915 t = et - p->event_type_pool;
916 p->one_time_event_type_bitmap =
917 clib_bitmap_ori (p->one_time_event_type_bitmap, t);
922 vlib_process_delete_one_time_event (vlib_main_t * vm, uword node_index,
925 vlib_node_main_t *nm = &vm->node_main;
926 vlib_node_t *n = vlib_get_node (vm, node_index);
927 vlib_process_t *p = vec_elt (nm->processes, n->runtime_index);
929 ASSERT (clib_bitmap_get (p->one_time_event_type_bitmap, t));
930 vlib_process_free_event_type (p, t, /* is_one_time_event */ 1);
934 vlib_process_signal_event_helper (vlib_node_main_t * nm,
938 uword n_data_elts, uword n_data_elt_bytes)
940 uword p_flags, add_to_pending, delete_from_wheel;
941 u8 *data_to_be_written_by_caller;
942 vec_attr_t va = { .elt_sz = n_data_elt_bytes };
944 ASSERT (n->type == VLIB_NODE_TYPE_PROCESS);
946 ASSERT (!pool_is_free_index (p->event_type_pool, t));
948 vec_validate (p->pending_event_data_by_type_index, t);
950 /* Resize data vector and return caller's data to be written. */
952 u8 *data_vec = p->pending_event_data_by_type_index[t];
955 if (!data_vec && vec_len (nm->recycled_event_data_vectors))
957 data_vec = vec_pop (nm->recycled_event_data_vectors);
958 vec_reset_length (data_vec);
961 l = vec_len (data_vec);
963 data_vec = _vec_realloc_internal (data_vec, l + n_data_elts, &va);
965 p->pending_event_data_by_type_index[t] = data_vec;
966 data_to_be_written_by_caller = data_vec + l * n_data_elt_bytes;
969 p->non_empty_event_type_bitmap =
970 clib_bitmap_ori (p->non_empty_event_type_bitmap, t);
974 /* Event was already signalled? */
975 add_to_pending = (p_flags & VLIB_PROCESS_RESUME_PENDING) == 0;
977 /* Process will resume when suspend time elapses? */
978 delete_from_wheel = 0;
979 if (p_flags & VLIB_PROCESS_IS_SUSPENDED_WAITING_FOR_CLOCK)
981 /* Waiting for both event and clock? */
982 if (p_flags & VLIB_PROCESS_IS_SUSPENDED_WAITING_FOR_EVENT)
984 if (!TW (tw_timer_handle_is_free)
985 ((TWT (tw_timer_wheel) *) nm->timing_wheel,
986 p->stop_timer_handle))
987 delete_from_wheel = 1;
989 /* timer just popped so process should already be on the list */
993 /* Waiting only for clock. Event will be queue and may be
994 handled when timer expires. */
998 /* Never add current process to pending vector since current process is
1000 add_to_pending &= nm->current_process_index != n->runtime_index;
1004 u32 x = vlib_timing_wheel_data_set_suspended_process (n->runtime_index);
1005 p->flags = p_flags | VLIB_PROCESS_RESUME_PENDING;
1006 vec_add1 (nm->data_from_advancing_timing_wheel, x);
1007 if (delete_from_wheel)
1010 ((TWT (tw_timer_wheel) *) nm->timing_wheel, p->stop_timer_handle);
1011 p->stop_timer_handle = ~0;
1015 return data_to_be_written_by_caller;
1018 always_inline void *
1019 vlib_process_signal_event_data (vlib_main_t * vm,
1022 uword n_data_elts, uword n_data_elt_bytes)
1024 vlib_node_main_t *nm = &vm->node_main;
1025 vlib_node_t *n = vlib_get_node (vm, node_index);
1026 vlib_process_t *p = vec_elt (nm->processes, n->runtime_index);
1029 /* Must be in main thread */
1030 ASSERT (vlib_get_thread_index () == 0);
1032 h = hash_get (p->event_type_index_by_type_opaque, type_opaque);
1035 vlib_process_event_type_t *et =
1036 vlib_process_new_event_type (p, type_opaque);
1037 t = et - p->event_type_pool;
1038 hash_set (p->event_type_index_by_type_opaque, type_opaque, t);
1043 return vlib_process_signal_event_helper (nm, n, p, t, n_data_elts,
1047 always_inline void *
1048 vlib_process_signal_event_at_time (vlib_main_t * vm,
1052 uword n_data_elts, uword n_data_elt_bytes)
1054 vlib_node_main_t *nm = &vm->node_main;
1055 vlib_node_t *n = vlib_get_node (vm, node_index);
1056 vlib_process_t *p = vec_elt (nm->processes, n->runtime_index);
1059 h = hash_get (p->event_type_index_by_type_opaque, type_opaque);
1062 vlib_process_event_type_t *et =
1063 vlib_process_new_event_type (p, type_opaque);
1064 t = et - p->event_type_pool;
1065 hash_set (p->event_type_index_by_type_opaque, type_opaque, t);
1070 if (vlib_process_suspend_time_is_zero (dt))
1071 return vlib_process_signal_event_helper (nm, n, p, t, n_data_elts,
1075 vlib_signal_timed_event_data_t *te;
1077 pool_get_aligned (nm->signal_timed_event_data_pool, te, sizeof (te[0]));
1079 te->n_data_elts = n_data_elts;
1080 te->n_data_elt_bytes = n_data_elt_bytes;
1081 te->n_data_bytes = n_data_elts * n_data_elt_bytes;
1083 /* Assert that structure fields are big enough. */
1084 ASSERT (te->n_data_elts == n_data_elts);
1085 ASSERT (te->n_data_elt_bytes == n_data_elt_bytes);
1086 ASSERT (te->n_data_bytes == n_data_elts * n_data_elt_bytes);
1088 te->process_node_index = n->runtime_index;
1089 te->event_type_index = t;
1091 p->stop_timer_handle =
1092 TW (tw_timer_start) ((TWT (tw_timer_wheel) *) nm->timing_wheel,
1093 vlib_timing_wheel_data_set_timed_event
1094 (te - nm->signal_timed_event_data_pool),
1096 (vlib_time_now (vm) + dt) * 1e5);
1098 /* Inline data big enough to hold event? */
1099 if (te->n_data_bytes < sizeof (te->inline_event_data))
1100 return te->inline_event_data;
1103 te->event_data_as_vector = 0;
1104 vec_resize (te->event_data_as_vector, te->n_data_bytes);
1105 return te->event_data_as_vector;
1110 always_inline void *
1111 vlib_process_signal_one_time_event_data (vlib_main_t * vm,
1115 uword n_data_elt_bytes)
1117 vlib_node_main_t *nm = &vm->node_main;
1118 vlib_node_t *n = vlib_get_node (vm, node_index);
1119 vlib_process_t *p = vec_elt (nm->processes, n->runtime_index);
1120 return vlib_process_signal_event_helper (nm, n, p, type_index, n_data_elts,
1125 vlib_process_signal_event (vlib_main_t * vm,
1126 uword node_index, uword type_opaque, uword data)
1128 uword *d = vlib_process_signal_event_data (vm, node_index, type_opaque,
1129 1 /* elts */ , sizeof (uword));
1134 vlib_process_signal_event_pointer (vlib_main_t * vm,
1136 uword type_opaque, void *data)
1138 void **d = vlib_process_signal_event_data (vm, node_index, type_opaque,
1139 1 /* elts */ , sizeof (data));
1144 * Signal event to process from any thread.
1146 * When in doubt, use this.
1149 vlib_process_signal_event_mt (vlib_main_t * vm,
1150 uword node_index, uword type_opaque, uword data)
1152 if (vlib_get_thread_index () != 0)
1154 vlib_process_signal_event_mt_args_t args = {
1155 .node_index = node_index,
1156 .type_opaque = type_opaque,
1159 vlib_rpc_call_main_thread (vlib_process_signal_event_mt_helper,
1160 (u8 *) & args, sizeof (args));
1163 vlib_process_signal_event (vm, node_index, type_opaque, data);
1167 vlib_process_signal_one_time_event (vlib_main_t * vm,
1169 uword type_index, uword data)
1172 vlib_process_signal_one_time_event_data (vm, node_index, type_index,
1173 1 /* elts */ , sizeof (uword));
1178 vlib_signal_one_time_waiting_process (vlib_main_t * vm,
1179 vlib_one_time_waiting_process_t * p)
1181 vlib_process_signal_one_time_event (vm, p->node_index, p->one_time_event,
1183 clib_memset (p, ~0, sizeof (p[0]));
1187 vlib_signal_one_time_waiting_process_vector (vlib_main_t * vm,
1188 vlib_one_time_waiting_process_t
1191 vlib_one_time_waiting_process_t *wp;
1192 vec_foreach (wp, *wps) vlib_signal_one_time_waiting_process (vm, wp);
1197 vlib_current_process_wait_for_one_time_event (vlib_main_t * vm,
1198 vlib_one_time_waiting_process_t
1201 p->node_index = vlib_current_process (vm);
1202 p->one_time_event = vlib_process_create_one_time_event (vm, p->node_index, /* type opaque */
1204 vlib_process_wait_for_one_time_event (vm,
1205 /* don't care about data */ 0,
1210 vlib_current_process_wait_for_one_time_event_vector (vlib_main_t * vm,
1211 vlib_one_time_waiting_process_t
1214 vlib_one_time_waiting_process_t *wp;
1215 vec_add2 (*wps, wp, 1);
1216 vlib_current_process_wait_for_one_time_event (vm, wp);
1220 vlib_node_runtime_update_main_loop_vector_stats (vlib_main_t * vm,
1221 vlib_node_runtime_t * node,
1227 ASSERT (is_pow2 (ARRAY_LEN (node->main_loop_vector_stats)));
1228 i = ((vm->main_loop_count >> VLIB_LOG2_MAIN_LOOPS_PER_STATS_UPDATE)
1229 & (ARRAY_LEN (node->main_loop_vector_stats) - 1));
1232 d = ((vm->main_loop_count >> VLIB_LOG2_MAIN_LOOPS_PER_STATS_UPDATE)
1234 (node->main_loop_count_last_dispatch >>
1235 VLIB_LOG2_MAIN_LOOPS_PER_STATS_UPDATE));
1236 vi0 = node->main_loop_vector_stats[i0];
1237 vi1 = node->main_loop_vector_stats[i1];
1238 vi0 = d == 0 ? vi0 : 0;
1239 vi1 = d <= 1 ? vi1 : 0;
1241 node->main_loop_vector_stats[i0] = vi0;
1242 node->main_loop_vector_stats[i1] = vi1;
1243 node->main_loop_count_last_dispatch = vm->main_loop_count;
1244 /* Return previous counter. */
1245 return node->main_loop_vector_stats[i1];
1249 vlib_node_vectors_per_main_loop_as_float (vlib_main_t * vm, u32 node_index)
1251 vlib_node_runtime_t *rt = vlib_node_get_runtime (vm, node_index);
1254 v = vlib_node_runtime_update_main_loop_vector_stats (vm, rt, /* n_vectors */
1256 return (f64) v / (1 << VLIB_LOG2_MAIN_LOOPS_PER_STATS_UPDATE);
1260 vlib_node_vectors_per_main_loop_as_integer (vlib_main_t * vm, u32 node_index)
1262 vlib_node_runtime_t *rt = vlib_node_get_runtime (vm, node_index);
1265 v = vlib_node_runtime_update_main_loop_vector_stats (vm, rt, /* n_vectors */
1267 return v >> VLIB_LOG2_MAIN_LOOPS_PER_STATS_UPDATE;
1270 void vlib_frame_free (vlib_main_t *vm, vlib_frame_t *f);
1272 /* Return the edge index if present, ~0 otherwise */
1273 uword vlib_node_get_next (vlib_main_t * vm, uword node, uword next_node);
1275 /* Add next node to given node in given slot. */
1277 vlib_node_add_next_with_slot (vlib_main_t * vm,
1278 uword node, uword next_node, uword slot);
1280 /* As above but adds to end of node's next vector. */
1282 vlib_node_add_next (vlib_main_t * vm, uword node, uword next_node)
1284 return vlib_node_add_next_with_slot (vm, node, next_node, ~0);
1287 /* Add next node to given node in given slot. */
1289 vlib_node_add_named_next_with_slot (vlib_main_t * vm,
1290 uword node, char *next_name, uword slot);
1292 /* As above but adds to end of node's next vector. */
1294 vlib_node_add_named_next (vlib_main_t * vm, uword node, char *name)
1296 return vlib_node_add_named_next_with_slot (vm, node, name, ~0);
1303 vlib_node_get_nodes (vlib_main_t * vm, u32 max_threads, int include_stats,
1304 int barrier_sync, vlib_node_t **** node_dupsp,
1305 vlib_main_t *** stat_vmsp);
1307 /* Query node given name. */
1308 vlib_node_t *vlib_get_node_by_name (vlib_main_t * vm, u8 * name);
1310 /* Rename a node. */
1311 void vlib_node_rename (vlib_main_t * vm, u32 node_index, char *fmt, ...);
1313 /* Register new packet processing node. Nodes can be registered
1314 dynamically via this call or statically via the VLIB_REGISTER_NODE
1316 u32 vlib_register_node (vlib_main_t *vm, vlib_node_registration_t *r,
1319 /* Register all node function variants */
1320 void vlib_register_all_node_march_variants (vlib_main_t *vm);
1322 /* Register all static nodes registered via VLIB_REGISTER_NODE. */
1323 void vlib_register_all_static_nodes (vlib_main_t * vm);
1325 /* Start a process. */
1326 void vlib_start_process (vlib_main_t * vm, uword process_index);
1328 /* Sync up runtime and main node stats. */
1329 void vlib_node_sync_stats (vlib_main_t * vm, vlib_node_t * n);
1330 void vlib_node_runtime_sync_stats (vlib_main_t *vm, vlib_node_runtime_t *r,
1331 uword n_calls, uword n_vectors,
1333 void vlib_node_runtime_sync_stats_node (vlib_node_t *n, vlib_node_runtime_t *r,
1334 uword n_calls, uword n_vectors,
1337 /* Node graph initialization function. */
1338 clib_error_t *vlib_node_main_init (vlib_main_t * vm);
1340 format_function_t format_vlib_node_graph;
1341 format_function_t format_vlib_node_name;
1342 format_function_t format_vlib_next_node_name;
1343 format_function_t format_vlib_node_and_next;
1344 format_function_t format_vlib_cpu_time;
1345 format_function_t format_vlib_time;
1346 /* Parse node name -> node index. */
1347 unformat_function_t unformat_vlib_node;
1350 vlib_node_increment_counter (vlib_main_t * vm, u32 node_index,
1351 u32 counter_index, u64 increment)
1353 vlib_node_t *n = vlib_get_node (vm, node_index);
1354 vlib_error_main_t *em = &vm->error_main;
1355 u32 node_counter_base_index = n->error_heap_index;
1356 em->counters[node_counter_base_index + counter_index] += increment;
1359 /** @brief Create a vlib process
1360 * @param vm &vlib_global_main
1361 * @param f the process node function
1362 * @param log2_n_stack_bytes size of the process stack, defaults to 16K
1363 * @return newly-create node index
1364 * @warning call only on the main thread. Barrier sync required
1366 u32 vlib_process_create (vlib_main_t * vm, char *name,
1367 vlib_node_function_t * f, u32 log2_n_stack_bytes);
1370 vlib_node_set_dispatch_wrapper (vlib_main_t *vm, vlib_node_function_t *fn)
1372 if (fn && vm->dispatch_wrapper_fn)
1374 vm->dispatch_wrapper_fn = fn;
1378 int vlib_node_set_march_variant (vlib_main_t *vm, u32 node_index,
1379 clib_march_variant_type_t march_variant);
1381 vlib_node_function_t *
1382 vlib_node_get_preferred_node_fn_variant (vlib_main_t *vm,
1383 vlib_node_fn_registration_t *regs);
1386 * vlib_frame_bitmap functions
1389 #define VLIB_FRAME_BITMAP_N_UWORDS \
1390 (((VLIB_FRAME_SIZE + uword_bits - 1) & ~(uword_bits - 1)) / uword_bits)
1392 typedef uword vlib_frame_bitmap_t[VLIB_FRAME_BITMAP_N_UWORDS];
1394 static_always_inline void
1395 vlib_frame_bitmap_init (uword *bmp, u32 n_first_bits_set)
1397 u32 n_left = VLIB_FRAME_BITMAP_N_UWORDS;
1398 while (n_first_bits_set >= (sizeof (uword) * 8) && n_left)
1401 n_first_bits_set -= sizeof (uword) * 8;
1405 if (n_first_bits_set && n_left)
1407 bmp++[0] = pow2_mask (n_first_bits_set);
1415 static_always_inline void
1416 vlib_frame_bitmap_set_bit_at_index (uword *bmp, uword bit_index)
1418 uword_bitmap_set_bits_at_index (bmp, bit_index, 1);
1421 static_always_inline void
1422 _vlib_frame_bitmap_clear_bit_at_index (uword *bmp, uword bit_index)
1424 uword_bitmap_clear_bits_at_index (bmp, bit_index, 1);
1427 static_always_inline void
1428 vlib_frame_bitmap_set_bits_at_index (uword *bmp, uword bit_index, uword n_bits)
1430 uword_bitmap_set_bits_at_index (bmp, bit_index, n_bits);
1433 static_always_inline void
1434 vlib_frame_bitmap_clear_bits_at_index (uword *bmp, uword bit_index,
1437 uword_bitmap_clear_bits_at_index (bmp, bit_index, n_bits);
1440 static_always_inline void
1441 vlib_frame_bitmap_clear (uword *bmp)
1443 u32 n_left = VLIB_FRAME_BITMAP_N_UWORDS;
1448 static_always_inline void
1449 vlib_frame_bitmap_xor (uword *bmp, uword *bmp2)
1451 u32 n_left = VLIB_FRAME_BITMAP_N_UWORDS;
1453 bmp++[0] ^= bmp2++[0];
1456 static_always_inline void
1457 vlib_frame_bitmap_or (uword *bmp, uword *bmp2)
1459 u32 n_left = VLIB_FRAME_BITMAP_N_UWORDS;
1461 bmp++[0] |= bmp2++[0];
1464 static_always_inline void
1465 vlib_frame_bitmap_and (uword *bmp, uword *bmp2)
1467 u32 n_left = VLIB_FRAME_BITMAP_N_UWORDS;
1469 bmp++[0] &= bmp2++[0];
1472 static_always_inline uword
1473 vlib_frame_bitmap_count_set_bits (uword *bmp)
1475 return uword_bitmap_count_set_bits (bmp, VLIB_FRAME_BITMAP_N_UWORDS);
1478 static_always_inline uword
1479 vlib_frame_bitmap_is_bit_set (uword *bmp, uword bit_index)
1481 return uword_bitmap_is_bit_set (bmp, bit_index);
1484 static_always_inline uword
1485 vlib_frame_bitmap_find_first_set (uword *bmp)
1487 uword rv = uword_bitmap_find_first_set (bmp);
1488 ASSERT (rv < VLIB_FRAME_BITMAP_N_UWORDS * uword_bits);
1492 #define foreach_vlib_frame_bitmap_set_bit_index(i, v) \
1493 for (uword _off = 0; _off < ARRAY_LEN (v); _off++) \
1495 (v[_off]) + 0 * (uword) (i = _off * uword_bits + \
1496 get_lowest_set_bit_index (v[_off])); \
1497 _tmp; i = _off * uword_bits + get_lowest_set_bit_index ( \
1498 _tmp = clear_lowest_set_bit (_tmp)))
1500 #endif /* included_vlib_node_funcs_h */
1503 * fd.io coding-style-patch-verification: ON
1506 * eval: (c-set-style "gnu")