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2018-12-20Tests: Cleanup @skip decorator.Paul Vinciguerra1-8/+8
The runnning environment is static as of module load time, so only evalute the conditions once at module load time. Track-by: VPP-1518 Change-Id: I73b0d17ae1ff90789e70307f168d43921829aec8 Signed-off-by: Paul Vinciguerra <pvinci@vinciconsulting.com>
2018-12-04vcl: test refactor and improvementsFlorin Coras1-264/+81
Change-Id: I92f415bf253d6e051ec9d94ebeb98f081b2a0293 Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-11-30vcl/test: increase wait time before connectFlorin Coras1-10/+66
Also split tests into smaller groups Change-Id: I35809607b7a59029606bb34b90cfeffd1985fe60 Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-11-30vcl: wait for segments with segment handleFlorin Coras1-2/+2
Instead of waiting for notification from binary api. Change-Id: I5ecab857d6bcdbed62d6bb06709570c4cf6b19ea Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-11-29test: use smaller timeouts for vcl/ldp testsFlorin Coras1-18/+18
Change-Id: Idebd110cbf5f0ddc5d9da5a1975b5d278825d131 Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-11-29make test: create virtualenv under /test/Klement Sekera1-1/+1
instead of using build-root, use /test/venv directory for virtualenv similarly, don't pollute build-root with test-built binaries Change-Id: I1e63c04037eaee718b27b34ef16c9eb0252afa53 Signed-off-by: Klement Sekera <ksekera@cisco.com>
2018-11-25make test: Fix too wide subprocess exceptionsPaul Vinciguerra1-3/+3
When a command fails, CalledProcessError is raised. testing with except: masks other failures. Change-Id: I7e3a6739411cb6a4c13e96dd123aff9159213fea Signed-off-by: Paul Vinciguerra <pvinci@vinciconsulting.com>
2018-11-20make test: Shorten VCL extended test timesDave Wallace1-73/+72
- And include them in regular CI testing Change-Id: I519fd07e1482baf6808601b3c928b825f9691c87 Signed-off-by: Dave Wallace <dwallacelf@gmail.com>
2018-09-20session/svm: add want_tx_event flag to fifoFlorin Coras1-15/+17
Have applications use explicit flag to request events from vpp when it transmits from a full fifo. Change-Id: I687c8f050a066bd5ce739d880eaec1f286038d95 Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-09-06session: support multiple worker bindsFlorin Coras1-57/+59
Allows app workers to listen on the same session endpoint. Incoming connects are spread across the workers in a round-robin fashion Change-Id: Ib5f5817230d9abc6127a85cdbdcad70d980c0f7f Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-09-02Switch to cmakeDamjan Marion1-51/+56
Change-Id: I982b69390c55b5ffbd744f355efc0aaf425b360c Signed-off-by: Damjan Marion <damarion@cisco.com>
2018-07-27vcl: use events for epoll/select/read/writeFlorin Coras1-1/+1
Have vcl poll and wait on the event message queues as opposed to constantly polling the session fifos. This also adds event signaling to cut through sessions. On the downside, because we can't wait on multiple condvars, i.e., when we have multiple message queues because of cut-through registrations, we do timed waits. Change-Id: I29ade95dba449659fe46008bb1af502276a7c5fd Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-06-24Revert "Revert "make test: fix broken interfaces""Klement Sekera1-4/+4
This reverts commit c8efa29b6f9a91381897b54f1147daf922ed7164. Change-Id: I1d5c5773d5f86a63073e255336bd9de628e26179 Signed-off-by: Klement Sekera <ksekera@cisco.com>
2018-06-22Revert "make test: fix broken interfaces"Ole Troan1-4/+4
This reverts commit d5c60b96a3fd93916fc4af5c8d6d25625c28242e. Change-Id: I3632b9c3f76c615aee897f28f76d094e7031e689 Signed-off-by: Ole Troan <ot@cisco.com>
2018-06-22make test: fix broken interfacesKlement Sekera1-4/+4
Change-Id: I2e092774f81503e04b53cc6c6b5d357fe3fc52ab Signed-off-by: Klement Sekera <ksekera@cisco.com>
2018-04-12VCL IOEvent external API callbackKeith Burns (alagalah)1-8/+6
Change-Id: I417357b00c43b27872aa3f681335bdc1ef574eca Signed-off-by: Keith Burns (alagalah) <alagalah@gmail.com> Signed-off-by: Dave Wallace <dwallacelf@gmail.com>
2018-03-29ip6: fix ip6-local urpf checkingFlorin Coras1-5/+3
Use sw_if_index[VLIB_TX] if set as fib index when doing the urpf check. Change-Id: I5ec3e7f7a54c6782704d91e9a5614fd0f7f9e3de Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-03-29tcp: fix fib index buffer taggingFlorin Coras1-19/+25
Change-Id: I373cc252df3621d44879b8eca70aed17d7752a2a Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-03-26VCL: add IPv6 to socket_test.sh and make testDave Wallace1-26/+386
Change-Id: If3827828062a46f1cce43642535333f677f06e62 Signed-off-by: Dave Wallace <dwallacelf@gmail.com>
2018-03-15make test: Add VCL iperf3 testsDave Wallace1-36/+102
Change-Id: I101a44aa4913bee8d9a1aa37822e8e7e61c7aa1d Signed-off-by: Dave Wallace <dwallacelf@gmail.com>
2018-03-09make test: Force VCL test timeouts to FAIL test.Dave Wallace1-2/+8
Change-Id: Ie8d3bcb9021d9272bd27dba35d30e5081023f061 Signed-off-by: Dave Wallace <dwallacelf@gmail.com>
2018-03-02make test: VCL extended test casesDave Wallace1-16/+194
- Add VCL cut thru uni-direction test over multiple sockets - Add VCL cut thru bi-direction test over multiple sockets - Add LDP cut thru uni-directional test over multiple sockets - Add LDP cut thru bi-directional test over multiple sockets - Add VCL thru host stack uni-direction test over multiple sockets - Add VCL thru host stack bi-direction test over multiple sockets - Add LDP thru host stack uni-directional test over multiple sockets - Add LDP thru host stack bi-directional test over multiple sockets - Fix validateResults to ensure worker_server process is killed if it still exists after running the test. Change-Id: I77ea9acef172667558dbcec23af1e4c72b29f376 Signed-off-by: Dave Wallace <dwallacelf@gmail.com>
2018-03-01make test: Add VCL LD_PRELOAD testsDave Wallace1-76/+117
- Refactor test code into VclTestCase object. - Add LDP cut thru and thru host stack tests. Change-Id: I2b16473df108004c79cc86fe1b7a789485b2dc5b Signed-off-by: Dave Wallace <dwallacelf@gmail.com>
2018-02-27make test: refactor vcl test casesDave Wallace1-87/+78
- Reduce replicated code in test cases - Configure separate namespace secrets for thru hoststack test case to validate namespace secret functionality. - Pass per-instance environment variables to Worker class init function. Change-Id: I3cd5d4538f105cbfb09671c4d761541b40714b8f Signed-off-by: Dave Wallace <dwallacelf@gmail.com>
2018-02-21make test: Add VCL thru hoststack test case.Dave Wallace1-8/+109
Change-Id: I7deb1fa4624cc1b7d7bc2f68034d4ce7589d4ef1 Signed-off-by: Dave Wallace <dwallacelf@gmail.com>
2018-02-19make test: Add VPP VCL cut-thru test.Dave Wallace1-0/+73
Change-Id: Id3ec196bfeb90b141123adee97f15d9712351680 Signed-off-by: Dave Wallace <dwallacelf@gmail.com>
a> 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 
/*
 * 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/lock.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
{
  VLIB_NODE_PROTO_HINT_NONE = 0,
  VLIB_NODE_PROTO_HINT_ETHERNET,
  VLIB_NODE_PROTO_HINT_IP4,
  VLIB_NODE_PROTO_HINT_IP6,
  VLIB_NODE_PROTO_HINT_TCP,
  VLIB_NODE_PROTO_HINT_UDP,
  VLIB_NODE_N_PROTO_HINTS,
} vlib_node_proto_hint_t;

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_fn_registration
{
  vlib_node_function_t *function;
  int priority;
  struct _vlib_node_fn_registration *next_registration;
  char *name;
} vlib_node_fn_registration_t;

typedef struct _vlib_node_registration
{
  /* Vector processing function for this node. */
  vlib_node_function_t *function;

  /* Node function candidate registration with priority */
  vlib_node_fn_registration_t *node_fn_registrations;

  /* 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;

  /* protocol at b->data[b->current_data] upon entry to the dispatch fn */
  u8 protocol_hint;

  /* 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;

#ifndef CLIB_MARCH_VARIANT
#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;                              \
}                                                                       \
static void __vlib_rm_node_registration_##x (void)                      \
    __attribute__((__destructor__)) ;                                   \
static void __vlib_rm_node_registration_##x (void)                      \
{                                                                       \
    vlib_main_t * vm = vlib_get_main();                                 \
    VLIB_REMOVE_FROM_LINKED_LIST (vm->node_main.node_registrations,     \
                                  &x, next_registration);               \
}                                                                       \
__VA_ARGS__ vlib_node_registration_t x
#else
#define VLIB_REGISTER_NODE(x,...)                                       \
static __clib_unused vlib_node_registration_t __clib_unused_##x
#endif

#ifndef CLIB_MARCH_VARIANT
#define CLIB_MARCH_VARIANT_STR "default"
#else
#define _CLIB_MARCH_VARIANT_STR(s) __CLIB_MARCH_VARIANT_STR(s)
#define __CLIB_MARCH_VARIANT_STR(s) #s
#define CLIB_MARCH_VARIANT_STR _CLIB_MARCH_VARIANT_STR(CLIB_MARCH_VARIANT)
#endif

#define VLIB_NODE_FN(node)						\
uword CLIB_MARCH_SFX (node##_fn)();					\
static vlib_node_fn_registration_t					\
  CLIB_MARCH_SFX(node##_fn_registration) =				\
  { .function = &CLIB_MARCH_SFX (node##_fn), };				\
									\
static void __clib_constructor						\
CLIB_MARCH_SFX (node##_multiarch_register) (void)			\
{									\
  extern vlib_node_registration_t node;					\
  vlib_node_fn_registration_t *r;					\
  r = & CLIB_MARCH_SFX (node##_fn_registration);			\
  r->priority = CLIB_MARCH_FN_PRIORITY();				\
  r->name = CLIB_MARCH_VARIANT_STR;					\
  r->next_registration = node.node_fn_registrations;			\
  node.node_fn_registrations = r;					\
}									\
uword CLIB_CPU_OPTIMIZED CLIB_MARCH_SFX (node##_fn)

#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;
  u64 perf_counter_ticks;
  u64 perf_counter_vectors;
} 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;

  /* protocol at b->data[b->current_data] upon entry to the dispatch fn */
  u8 protocol_hint;

  /* 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;

  /* Node function candidate registration with priority */
  vlib_node_fn_registration_t *node_fn_registrations;
} 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 CLIB_CACHE_LINE_BYTES

/* Calling frame (think stack frame) for a node. */
typedef struct vlib_frame_t
{
  /* Frame flags. */
  u16 frame_flags;

  /* User flags. Used for sending hints to the next node. */
  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;

  /* 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)
{
  clib_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);	/**< cacheline mark */

  vlib_node_function_t *function;	/**< Node function to call. */

  vlib_error_t *errors;			/**< Vector of errors for this node. */

#if __SIZEOF_POINTER__ == 4
  u8 pad[8];
#endif

  u32 clocks_since_last_overflow;	/**< Number of clock cycles. */

  u32 max_clock;			/**< Maximum clock cycle for an
					  invocation. */

  u32 max_clock_n;			/**< Number of vectors in the recorded
					  max_clock. */

  u32 calls_since_last_overflow;	/**< Number of calls. */

  u32 vectors_since_last_overflow;	/**< Number of vector elements
					  processed by this node. */

  u32 perf_counter_ticks_since_last_overflow; /**< Perf counter ticks */
  u32 perf_counter_vectors_since_last_overflow;	/**< Perf counter vectors */

  u32 next_frame_index;			/**< Start of next frames for this
					  node. */

  u32 node_index;			/**< Node index. */

  u32 input_main_loops_per_call;	/**< 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 main_loop_count_last_dispatch;	/**< Saved main loop counter of last
					  dispatch of this node. */

  u32 main_loop_vector_stats[2];

  u16 flags;				/**< Copy of main node flags. */

  u16 state;				/**< Input node state. */

  u16 n_next_nodes;

  u16 cached_next_index;		/**< 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 thread_index;			/**< thread this node runs on */

  u8 runtime_data[0];			/**< Function dependent
					  node-runtime data. This data is
					  thread local, and it is not
					  cloned from main thread. It needs
					  to be initialized for each thread
					  before it is used unless
					  runtime_data template exists in
					  vlib_node_t. */
}
vlib_node_runtime_t;

#define VLIB_NODE_RUNTIME_DATA_SIZE	(sizeof (vlib_node_runtime_t) - STRUCT_OFFSET_OF (vlib_node_runtime_t, runtime_data))

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 clock time (10us ticks) when process
   * is to be resumed.
   */
  u64 resume_clock_interval;

  /* Handle from timer code, to cancel an unexpired timer */
  u32 stop_timer_handle;

  /* 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;
  clib_spinlock_t pending_interrupt_lock;

  /* 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. */
  void *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. */
  f64 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:
 */