aboutsummaryrefslogtreecommitdiffstats
path: root/src/vlib/node.h
diff options
context:
space:
mode:
Diffstat (limited to 'src/vlib/node.h')
-rw-r--r--src/vlib/node.h725
1 files changed, 725 insertions, 0 deletions
diff --git a/src/vlib/node.h b/src/vlib/node.h
new file mode 100644
index 00000000..b624e9d6
--- /dev/null
+++ b/src/vlib/node.h
@@ -0,0 +1,725 @@
+/*
+ * Copyright (c) 2015 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+/*
+ * node.h: VLIB processing nodes
+ *
+ * Copyright (c) 2008 Eliot Dresselhaus
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef included_vlib_node_h
+#define included_vlib_node_h
+
+#include <vppinfra/cpu.h>
+#include <vppinfra/longjmp.h>
+#include <vppinfra/timing_wheel.h>
+#include <vlib/trace.h> /* for vlib_trace_filter_t */
+
+/* Forward declaration. */
+struct vlib_node_runtime_t;
+struct vlib_frame_t;
+
+/* Internal nodes (including output nodes) move data from node to
+ node (or out of the graph for output nodes). */
+typedef uword (vlib_node_function_t) (struct vlib_main_t * vm,
+ struct vlib_node_runtime_t * node,
+ struct vlib_frame_t * frame);
+
+typedef enum
+{
+ /* An internal node on the call graph (could be output). */
+ VLIB_NODE_TYPE_INTERNAL,
+
+ /* Nodes which input data into the processing graph.
+ Input nodes are called for each iteration of main loop. */
+ VLIB_NODE_TYPE_INPUT,
+
+ /* Nodes to be called before all input nodes.
+ Used, for example, to clean out driver TX rings before
+ processing input. */
+ VLIB_NODE_TYPE_PRE_INPUT,
+
+ /* "Process" nodes which can be suspended and later resumed. */
+ VLIB_NODE_TYPE_PROCESS,
+
+ VLIB_N_NODE_TYPE,
+} vlib_node_type_t;
+
+typedef struct _vlib_node_registration
+{
+ /* Vector processing function for this node. */
+ vlib_node_function_t *function;
+
+ /* Node name. */
+ char *name;
+
+ /* Name of sibling (if applicable). */
+ char *sibling_of;
+
+ /* Node index filled in by registration. */
+ u32 index;
+
+ /* Type of this node. */
+ vlib_node_type_t type;
+
+ /* Error strings indexed by error code for this node. */
+ char **error_strings;
+
+ /* Buffer format/unformat for this node. */
+ format_function_t *format_buffer;
+ unformat_function_t *unformat_buffer;
+
+ /* Trace format/unformat for this node. */
+ format_function_t *format_trace;
+ unformat_function_t *unformat_trace;
+
+ /* Function to validate incoming frames. */
+ u8 *(*validate_frame) (struct vlib_main_t * vm,
+ struct vlib_node_runtime_t *,
+ struct vlib_frame_t * f);
+
+ /* Per-node runtime data. */
+ void *runtime_data;
+
+ /* Process stack size. */
+ u16 process_log2_n_stack_bytes;
+
+ /* Number of bytes of per-node run time data. */
+ u8 runtime_data_bytes;
+
+ /* State for input nodes. */
+ u8 state;
+
+ /* Node flags. */
+ u16 flags;
+
+ /* Size of scalar and vector arguments in bytes. */
+ u16 scalar_size, vector_size;
+
+ /* Number of error codes used by this node. */
+ u16 n_errors;
+
+ /* Number of next node names that follow. */
+ u16 n_next_nodes;
+
+ /* Constructor link-list, don't ask... */
+ struct _vlib_node_registration *next_registration;
+
+ /* Names of next nodes which this node feeds into. */
+ char *next_nodes[];
+
+} vlib_node_registration_t;
+
+#define VLIB_REGISTER_NODE(x,...) \
+ __VA_ARGS__ vlib_node_registration_t x; \
+static void __vlib_add_node_registration_##x (void) \
+ __attribute__((__constructor__)) ; \
+static void __vlib_add_node_registration_##x (void) \
+{ \
+ vlib_main_t * vm = vlib_get_main(); \
+ x.next_registration = vm->node_main.node_registrations; \
+ vm->node_main.node_registrations = &x; \
+} \
+__VA_ARGS__ vlib_node_registration_t x
+
+#if CLIB_DEBUG > 0
+#define VLIB_NODE_FUNCTION_CLONE_TEMPLATE(arch, fn)
+#define VLIB_NODE_FUNCTION_MULTIARCH_CLONE(fn)
+#define VLIB_NODE_FUNCTION_MULTIARCH(node, fn)
+#else
+#define VLIB_NODE_FUNCTION_CLONE_TEMPLATE(arch, fn, tgt) \
+ uword \
+ __attribute__ ((flatten)) \
+ __attribute__ ((target (tgt))) \
+ CLIB_CPU_OPTIMIZED \
+ fn ## _ ## arch ( struct vlib_main_t * vm, \
+ struct vlib_node_runtime_t * node, \
+ struct vlib_frame_t * frame) \
+ { return fn (vm, node, frame); }
+
+#define VLIB_NODE_FUNCTION_MULTIARCH_CLONE(fn) \
+ foreach_march_variant(VLIB_NODE_FUNCTION_CLONE_TEMPLATE, fn)
+
+#define VLIB_NODE_FUNCTION_MULTIARCH(node, fn) \
+ VLIB_NODE_FUNCTION_MULTIARCH_CLONE(fn) \
+ CLIB_MULTIARCH_SELECT_FN(fn, static inline) \
+ static void __attribute__((__constructor__)) \
+ __vlib_node_function_multiarch_select_##node (void) \
+ { node.function = fn ## _multiarch_select(); }
+#endif
+
+always_inline vlib_node_registration_t *
+vlib_node_next_registered (vlib_node_registration_t * c)
+{
+ c =
+ clib_elf_section_data_next (c,
+ c->n_next_nodes * sizeof (c->next_nodes[0]));
+ return c;
+}
+
+typedef struct
+{
+ /* Total calls, clock ticks and vector elements processed for this node. */
+ u64 calls, vectors, clocks, suspends;
+ u64 max_clock;
+ u64 max_clock_n;
+} vlib_node_stats_t;
+
+#define foreach_vlib_node_state \
+ /* Input node is called each iteration of main loop. \
+ This is the default (zero). */ \
+ _ (POLLING) \
+ /* Input node is called when device signals an interrupt. */ \
+ _ (INTERRUPT) \
+ /* Input node is never called. */ \
+ _ (DISABLED)
+
+typedef enum
+{
+#define _(f) VLIB_NODE_STATE_##f,
+ foreach_vlib_node_state
+#undef _
+ VLIB_N_NODE_STATE,
+} vlib_node_state_t;
+
+typedef struct vlib_node_t
+{
+ /* Vector processing function for this node. */
+ vlib_node_function_t *function;
+
+ /* Node name. */
+ u8 *name;
+
+ /* Node name index in elog string table. */
+ u32 name_elog_string;
+
+ /* Total statistics for this node. */
+ vlib_node_stats_t stats_total;
+
+ /* Saved values as of last clear (or zero if never cleared).
+ Current values are always stats_total - stats_last_clear. */
+ vlib_node_stats_t stats_last_clear;
+
+ /* Type of this node. */
+ vlib_node_type_t type;
+
+ /* Node index. */
+ u32 index;
+
+ /* Index of corresponding node runtime. */
+ u32 runtime_index;
+
+ /* Runtime data for this node. */
+ void *runtime_data;
+
+ /* Node flags. */
+ u16 flags;
+
+ /* Processing function keeps frame. Tells node dispatching code not
+ to free frame after dispatch is done. */
+#define VLIB_NODE_FLAG_FRAME_NO_FREE_AFTER_DISPATCH (1 << 0)
+
+ /* Node counts as output/drop/punt node for stats purposes. */
+#define VLIB_NODE_FLAG_IS_OUTPUT (1 << 1)
+#define VLIB_NODE_FLAG_IS_DROP (1 << 2)
+#define VLIB_NODE_FLAG_IS_PUNT (1 << 3)
+#define VLIB_NODE_FLAG_IS_HANDOFF (1 << 4)
+
+ /* Set if current node runtime has traced vectors. */
+#define VLIB_NODE_FLAG_TRACE (1 << 5)
+
+#define VLIB_NODE_FLAG_SWITCH_FROM_INTERRUPT_TO_POLLING_MODE (1 << 6)
+#define VLIB_NODE_FLAG_SWITCH_FROM_POLLING_TO_INTERRUPT_MODE (1 << 7)
+
+ /* State for input nodes. */
+ u8 state;
+
+ /* Number of bytes of run time data. */
+ u8 runtime_data_bytes;
+
+ /* Number of error codes used by this node. */
+ u16 n_errors;
+
+ /* Size of scalar and vector arguments in bytes. */
+ u16 scalar_size, vector_size;
+
+ /* Handle/index in error heap for this node. */
+ u32 error_heap_handle;
+ u32 error_heap_index;
+
+ /* Error strings indexed by error code for this node. */
+ char **error_strings;
+
+ /* Vector of next node names.
+ Only used before next_nodes array is initialized. */
+ char **next_node_names;
+
+ /* Next node indices for this node. */
+ u32 *next_nodes;
+
+ /* Name of node that we are sibling of. */
+ char *sibling_of;
+
+ /* Bitmap of all of this node's siblings. */
+ uword *sibling_bitmap;
+
+ /* Total number of vectors sent to each next node. */
+ u64 *n_vectors_by_next_node;
+
+ /* Hash table mapping next node index into slot in
+ next_nodes vector. Quickly determines whether this node
+ is connected to given next node and, if so, with which slot. */
+ uword *next_slot_by_node;
+
+ /* Bitmap of node indices which feed this node. */
+ uword *prev_node_bitmap;
+
+ /* Node/next-index which own enqueue rights with to this node. */
+ u32 owner_node_index, owner_next_index;
+
+ /* Buffer format/unformat for this node. */
+ format_function_t *format_buffer;
+ unformat_function_t *unformat_buffer;
+
+ /* Trace buffer format/unformat for this node. */
+ format_function_t *format_trace;
+
+ /* Function to validate incoming frames. */
+ u8 *(*validate_frame) (struct vlib_main_t * vm,
+ struct vlib_node_runtime_t *,
+ struct vlib_frame_t * f);
+ /* for pretty-printing, not typically valid */
+ u8 *state_string;
+} vlib_node_t;
+
+#define VLIB_INVALID_NODE_INDEX ((u32) ~0)
+
+/* Max number of vector elements to process at once per node. */
+#define VLIB_FRAME_SIZE 256
+#define VLIB_FRAME_ALIGN VLIB_MAX_CPUS
+
+/* Calling frame (think stack frame) for a node. */
+typedef struct vlib_frame_t
+{
+ /* Frame flags. */
+ u16 flags;
+
+ /* Number of scalar bytes in arguments. */
+ u8 scalar_size;
+
+ /* Number of bytes per vector argument. */
+ u8 vector_size;
+
+ /* Number of vector elements currently in frame. */
+ u16 n_vectors;
+
+ /* Owner cpuid / heap id */
+ u16 cpu_index;
+
+ /* Scalar and vector arguments to next node. */
+ u8 arguments[0];
+} vlib_frame_t;
+
+typedef struct
+{
+ /* Frame index. */
+ u32 frame_index;
+
+ /* Node runtime for this next. */
+ u32 node_runtime_index;
+
+ /* Next frame flags. */
+ u32 flags;
+
+ /* Reflects node frame-used flag for this next. */
+#define VLIB_FRAME_NO_FREE_AFTER_DISPATCH \
+ VLIB_NODE_FLAG_FRAME_NO_FREE_AFTER_DISPATCH
+
+ /* This next frame owns enqueue to node
+ corresponding to node_runtime_index. */
+#define VLIB_FRAME_OWNER (1 << 15)
+
+ /* Set when frame has been allocated for this next. */
+#define VLIB_FRAME_IS_ALLOCATED VLIB_NODE_FLAG_IS_OUTPUT
+
+ /* Set when frame has been added to pending vector. */
+#define VLIB_FRAME_PENDING VLIB_NODE_FLAG_IS_DROP
+
+ /* Set when frame is to be freed after dispatch. */
+#define VLIB_FRAME_FREE_AFTER_DISPATCH VLIB_NODE_FLAG_IS_PUNT
+
+ /* Set when frame has traced packets. */
+#define VLIB_FRAME_TRACE VLIB_NODE_FLAG_TRACE
+
+ /* Number of vectors enqueue to this next since last overflow. */
+ u32 vectors_since_last_overflow;
+} vlib_next_frame_t;
+
+always_inline void
+vlib_next_frame_init (vlib_next_frame_t * nf)
+{
+ memset (nf, 0, sizeof (nf[0]));
+ nf->frame_index = ~0;
+ nf->node_runtime_index = ~0;
+}
+
+/* A frame pending dispatch by main loop. */
+typedef struct
+{
+ /* Node and runtime for this frame. */
+ u32 node_runtime_index;
+
+ /* Frame index (in the heap). */
+ u32 frame_index;
+
+ /* Start of next frames for this node. */
+ u32 next_frame_index;
+
+ /* Special value for next_frame_index when there is no next frame. */
+#define VLIB_PENDING_FRAME_NO_NEXT_FRAME ((u32) ~0)
+} vlib_pending_frame_t;
+
+typedef struct vlib_node_runtime_t
+{
+ CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
+ /* Node function to call. */
+ vlib_node_function_t *function;
+
+ /* Vector of errors for this node. */
+ vlib_error_t *errors;
+
+ /* Number of clock cycles. */
+ u32 clocks_since_last_overflow;
+
+ /* Maximum clock cycle for an invocation. */
+ u32 max_clock;
+
+ /* Number of vectors in the recorded max_clock. */
+ u32 max_clock_n;
+
+ /* Number of calls. */
+ u32 calls_since_last_overflow;
+
+ /* Number of vector elements processed by this node. */
+ u32 vectors_since_last_overflow;
+
+ /* Start of next frames for this node. */
+ u32 next_frame_index;
+
+ /* Node index. */
+ u32 node_index;
+
+ /* For input nodes: decremented on each main loop interation until it reaches zero
+ and function is called. Allows some input nodes to be called
+ more than others. */
+ u32 input_main_loops_per_call;
+
+ /* Saved main loop counter of last dispatch of this node. */
+ u32 main_loop_count_last_dispatch;
+
+ u32 main_loop_vector_stats[2];
+
+ /* Copy of main node flags. */
+ u16 flags;
+
+ /* Input node state. */
+ u16 state;
+
+ u16 n_next_nodes;
+
+ /* Next frame index that vector arguments were last enqueued to
+ last time this node ran. Set to zero before first run
+ of this node. */
+ u16 cached_next_index;
+
+ /* CPU this node runs on */
+ u16 cpu_index;
+
+ /* Function dependent node-runtime. */
+ u8 runtime_data[0];
+}
+vlib_node_runtime_t;
+
+typedef struct
+{
+ /* Number of allocated frames for this scalar/vector size. */
+ u32 n_alloc_frames;
+
+ /* Vector of free frame indices for this scalar/vector size. */
+ u32 *free_frame_indices;
+} vlib_frame_size_t;
+
+typedef struct
+{
+ /* Users opaque value for event type. */
+ uword opaque;
+} vlib_process_event_type_t;
+
+typedef struct
+{
+ /* Node runtime for this process. */
+ vlib_node_runtime_t node_runtime;
+
+ /* Where to longjmp when process is done. */
+ clib_longjmp_t return_longjmp;
+
+#define VLIB_PROCESS_RETURN_LONGJMP_RETURN ((uword) ~0 - 0)
+#define VLIB_PROCESS_RETURN_LONGJMP_SUSPEND ((uword) ~0 - 1)
+
+ /* Where to longjmp to resume node after suspend. */
+ clib_longjmp_t resume_longjmp;
+#define VLIB_PROCESS_RESUME_LONGJMP_SUSPEND 0
+#define VLIB_PROCESS_RESUME_LONGJMP_RESUME 1
+
+ u16 flags;
+#define VLIB_PROCESS_IS_SUSPENDED_WAITING_FOR_CLOCK (1 << 0)
+#define VLIB_PROCESS_IS_SUSPENDED_WAITING_FOR_EVENT (1 << 1)
+ /* Set to indicate that this process has been added to resume vector. */
+#define VLIB_PROCESS_RESUME_PENDING (1 << 2)
+
+ /* Process function is currently running. */
+#define VLIB_PROCESS_IS_RUNNING (1 << 3)
+
+ /* Size of process stack. */
+ u16 log2_n_stack_bytes;
+
+ u32 suspended_process_frame_index;
+
+ /* Number of times this process was suspended. */
+ u32 n_suspends;
+
+ /* Vectors of pending event data indexed by event type index. */
+ void **pending_event_data_by_type_index;
+
+ /* Bitmap of event type-indices with non-empty vectors. */
+ uword *non_empty_event_type_bitmap;
+
+ /* Bitmap of event type-indices which are one time events. */
+ uword *one_time_event_type_bitmap;
+
+ /* Type is opaque pointer -- typically a pointer to an event handler
+ function. Hash table to map opaque to a type index. */
+ uword *event_type_index_by_type_opaque;
+
+ /* Pool of currently valid event types. */
+ vlib_process_event_type_t *event_type_pool;
+
+ /* When suspending saves cpu cycle counter when process is to be resumed. */
+ u64 resume_cpu_time;
+
+ /* Default output function and its argument for any CLI outputs
+ within the process. */
+ vlib_cli_output_function_t *output_function;
+ uword output_function_arg;
+
+#ifdef CLIB_UNIX
+ /* Pad to a multiple of the page size so we can mprotect process stacks */
+#define PAGE_SIZE_MULTIPLE 0x1000
+#define ALIGN_ON_MULTIPLE_PAGE_BOUNDARY_FOR_MPROTECT __attribute__ ((aligned (PAGE_SIZE_MULTIPLE)))
+#else
+#define ALIGN_ON_MULTIPLE_PAGE_BOUNDARY_FOR_MPROTECT
+#endif
+
+ /* Process stack. Starts here and extends 2^log2_n_stack_bytes
+ bytes. */
+
+#define VLIB_PROCESS_STACK_MAGIC (0xdead7ead)
+ u32 stack[0] ALIGN_ON_MULTIPLE_PAGE_BOUNDARY_FOR_MPROTECT;
+} vlib_process_t __attribute__ ((aligned (CLIB_CACHE_LINE_BYTES)));
+
+#ifdef CLIB_UNIX
+ /* Ensure that the stack is aligned on the multiple of the page size */
+typedef char
+ assert_process_stack_must_be_aligned_exactly_to_page_size_multiple[(sizeof
+ (vlib_process_t)
+ -
+ PAGE_SIZE_MULTIPLE)
+ ==
+ 0 ? 0 :
+ -1];
+#endif
+
+typedef struct
+{
+ u32 node_index;
+
+ u32 one_time_event;
+} vlib_one_time_waiting_process_t;
+
+typedef struct
+{
+ u16 n_data_elts;
+
+ u16 n_data_elt_bytes;
+
+ /* n_data_elts * n_data_elt_bytes */
+ u32 n_data_bytes;
+
+ /* Process node & event type to be used to signal event. */
+ u32 process_node_index;
+
+ u32 event_type_index;
+
+ union
+ {
+ u8 inline_event_data[64 - 3 * sizeof (u32) - 2 * sizeof (u16)];
+
+ /* Vector of event data used only when data does not fit inline. */
+ u8 *event_data_as_vector;
+ };
+}
+vlib_signal_timed_event_data_t;
+
+always_inline uword
+vlib_timing_wheel_data_is_timed_event (u32 d)
+{
+ return d & 1;
+}
+
+always_inline u32
+vlib_timing_wheel_data_set_suspended_process (u32 i)
+{
+ return 0 + 2 * i;
+}
+
+always_inline u32
+vlib_timing_wheel_data_set_timed_event (u32 i)
+{
+ return 1 + 2 * i;
+}
+
+always_inline uword
+vlib_timing_wheel_data_get_index (u32 d)
+{
+ return d / 2;
+}
+
+typedef struct
+{
+ /* Public nodes. */
+ vlib_node_t **nodes;
+
+ /* Node index hashed by node name. */
+ uword *node_by_name;
+
+ u32 flags;
+#define VLIB_NODE_MAIN_RUNTIME_STARTED (1 << 0)
+
+ /* Nodes segregated by type for cache locality.
+ Does not apply to nodes of type VLIB_NODE_TYPE_INTERNAL. */
+ vlib_node_runtime_t *nodes_by_type[VLIB_N_NODE_TYPE];
+
+ /* Node runtime indices for input nodes with pending interrupts. */
+ u32 *pending_interrupt_node_runtime_indices;
+
+ /* Input nodes are switched from/to interrupt to/from polling mode
+ when average vector length goes above/below polling/interrupt
+ thresholds. */
+ u32 polling_threshold_vector_length;
+ u32 interrupt_threshold_vector_length;
+
+ /* Vector of next frames. */
+ vlib_next_frame_t *next_frames;
+
+ /* Vector of internal node's frames waiting to be called. */
+ vlib_pending_frame_t *pending_frames;
+
+ /* Timing wheel for scheduling time-based node dispatch. */
+ timing_wheel_t timing_wheel;
+
+ vlib_signal_timed_event_data_t *signal_timed_event_data_pool;
+
+ /* Opaque data vector added via timing_wheel_advance. */
+ u32 *data_from_advancing_timing_wheel;
+
+ /* CPU time of next process to be ready on timing wheel. */
+ u64 cpu_time_next_process_ready;
+
+ /* Vector of process nodes.
+ One for each node of type VLIB_NODE_TYPE_PROCESS. */
+ vlib_process_t **processes;
+
+ /* Current running process or ~0 if no process running. */
+ u32 current_process_index;
+
+ /* Pool of pending process frames. */
+ vlib_pending_frame_t *suspended_process_frames;
+
+ /* Vector of event data vectors pending recycle. */
+ void **recycled_event_data_vectors;
+
+ /* Current counts of nodes in each state. */
+ u32 input_node_counts_by_state[VLIB_N_NODE_STATE];
+
+ /* Hash of (scalar_size,vector_size) to frame_sizes index. */
+ uword *frame_size_hash;
+
+ /* Per-size frame allocation information. */
+ vlib_frame_size_t *frame_sizes;
+
+ /* Time of last node runtime stats clear. */
+ f64 time_last_runtime_stats_clear;
+
+ /* Node registrations added by constructors */
+ vlib_node_registration_t *node_registrations;
+} vlib_node_main_t;
+
+
+#define FRAME_QUEUE_MAX_NELTS 32
+typedef struct
+{
+ CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
+ u64 head;
+ u64 head_hint;
+ u64 tail;
+ u32 n_in_use;
+ u32 nelts;
+ u32 written;
+ u32 threshold;
+ i32 n_vectors[FRAME_QUEUE_MAX_NELTS];
+} frame_queue_trace_t;
+
+typedef struct
+{
+ u64 count[FRAME_QUEUE_MAX_NELTS];
+} frame_queue_nelt_counter_t;
+
+#endif /* included_vlib_node_h */
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */