pcap-based dispatch tracer

[vpp.git] / src / vlib / main.h

diff --git a/src/vlib/main.h b/src/vlib/main.h
index 0197b4f..9e7538e 100644 (file)
--- a/src/vlib/main.h
+++ b/src/vlib/main.h
@@ -46,6 +46,8 @@
 #include <vppinfra/pool.h>
 #include <vppinfra/random_buffer.h>
 #include <vppinfra/time.h>
+#include <vppinfra/pmc.h>
+#include <vppinfra/pcap.h>
 
 #include <pthread.h>
 
@@ -58,6 +60,7 @@
 
 typedef struct vlib_main_t
 {
+  CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
   /* Instruction level timing state. */
   clib_time_t clib_time;
 
@@ -80,11 +83,18 @@ typedef struct vlib_main_t
   u32 vector_counts_per_main_loop[2];
   u32 node_counts_per_main_loop[2];
 
+  /* Main loop hw / sw performance counters */
+    u64 (*vlib_node_runtime_perf_counter_cb) (struct vlib_main_t *);
+  int perf_counter_id;
+  int perf_counter_fd;
+
   /* Every so often we switch to the next counter. */
 #define VLIB_LOG2_MAIN_LOOPS_PER_STATS_UPDATE 7
 
   /* Jump target to exit main loop with given code. */
   u32 main_loop_exit_set;
+  /* Set e.g. in the SIGTERM signal handler, checked in a safe place... */
+  volatile u32 main_loop_exit_now;
   clib_longjmp_t main_loop_exit;
 #define VLIB_MAIN_LOOP_EXIT_NONE 0
 #define VLIB_MAIN_LOOP_EXIT_PANIC 1
@@ -97,20 +107,21 @@ typedef struct vlib_main_t
   /* Name for e.g. syslog. */
   char *name;
 
-  /* Start and size of CLIB heap. */
+  /* Start of the heap. */
   void *heap_base;
+
+  /* Truncated version, to create frame indices */
+  void *heap_aligned_base;
+
+  /* Size of the heap */
   uword heap_size;
 
-  vlib_buffer_main_t *buffer_main;
+  /* Pool of buffer free lists. */
+  vlib_buffer_free_list_t *buffer_free_list_pool;
 
+  /* physical memory main structure. */
   vlib_physmem_main_t physmem_main;
 
-  /* Allocate/free buffer memory for DMA transfers, descriptor rings, etc.
-     buffer memory is guaranteed to be cache-aligned. */
-  void *(*os_physmem_alloc_aligned) (vlib_physmem_main_t * pm,
-                                    uword n_bytes, uword alignment);
-  void (*os_physmem_free) (void *x);
-
   /* Node graph main structure. */
   vlib_node_main_t node_main;
 
@@ -120,6 +131,10 @@ typedef struct vlib_main_t
   /* Packet trace buffer. */
   vlib_trace_main_t trace_main;
 
+  /* Pcap dispatch trace main */
+  pcap_main_t dispatch_pcap_main;
+  uword dispatch_pcap_enable;
+
   /* Error handling. */
   vlib_error_main_t error_main;
 
@@ -129,9 +144,6 @@ typedef struct vlib_main_t
                         struct vlib_node_runtime_t * node,
                         vlib_frame_t * frame);
 
-  /* Multicast distribution.  Set to zero for MC disabled. */
-  mc_main_t *mc_main;
-
   /* Stream index to use for distribution when MC is enabled. */
   u32 mc_stream_index;
 
@@ -140,6 +152,10 @@ typedef struct vlib_main_t
   /* Event logger. */
   elog_main_t elog_main;
 
+  /* Event logger trace flags */
+  int elog_trace_api_messages;
+  int elog_trace_cli_commands;
+
   /* Node call and return event types. */
   elog_event_type_t *node_call_elog_event_types;
   elog_event_type_t *node_return_elog_event_types;
@@ -156,9 +172,7 @@ typedef struct vlib_main_t
   uword *init_functions_called;
 
   /* to compare with node runtime */
-  u32 cpu_index;
-
-  void **mbuf_alloc_list;
+  u32 thread_index;
 
   /* List of init functions to call, setup by constructors */
   _vlib_init_function_list_elt_t *init_function_registrations;
@@ -167,7 +181,6 @@ typedef struct vlib_main_t
   _vlib_init_function_list_elt_t *main_loop_exit_function_registrations;
   _vlib_init_function_list_elt_t *api_init_function_registrations;
   vlib_config_function_runtime_t *config_function_registrations;
-  mc_serialize_msg_t *mc_msg_registrations;    /* mc_main is a pointer... */
 
   /* control-plane API queue signal pending, length indication */
   volatile u32 queue_signal_pending;
@@ -175,8 +188,35 @@ typedef struct vlib_main_t
   void (*queue_signal_callback) (struct vlib_main_t *);
   u8 **argv;
 
+  /* Top of (worker) dispatch loop callback */
+  volatile void (*worker_thread_main_loop_callback) (struct vlib_main_t *);
+
   /* debugging */
   volatile int parked_at_barrier;
+
+  /* Attempt to do a post-mortem elog dump */
+  int elog_post_mortem_dump;
+
+  /*
+   * Need to call vlib_worker_thread_node_runtime_update before
+   * releasing worker thread barrier. Only valid in vlib_global_main.
+   */
+  int need_vlib_worker_thread_node_runtime_update;
+
+  /*
+   * Barrier epoch - Set to current time, each time barrier_sync or
+   * barrier_release is called with zero recursion.
+   */
+  f64 barrier_epoch;
+
+  /* Earliest barrier can be closed again */
+  f64 barrier_no_close_before;
+
+  /* RPC requests, main thread only */
+  uword *pending_rpc_requests;
+  uword *processing_rpc_requests;
+  clib_spinlock_t pending_rpc_lock;
+
 } vlib_main_t;
 
 /* Global main structure. */
@@ -309,6 +349,9 @@ vlib_increment_main_loop_counter (vlib_main_t * vm)
   vm->main_loop_nodes_processed = 0;
   vm->vector_counts_per_main_loop[i] = v;
   vm->node_counts_per_main_loop[i] = n;
+
+  if (PREDICT_FALSE (vm->main_loop_exit_now))
+    clib_longjmp (&vm->main_loop_exit, VLIB_MAIN_LOOP_EXIT_CLI);
 }
 
 always_inline void vlib_set_queue_signal_callback
@@ -320,7 +363,7 @@ always_inline void vlib_set_queue_signal_callback
 /* Main routine. */
 int vlib_main (vlib_main_t * vm, unformat_input_t * input);
 
-/* Thread stacks, for os_get_cpu_number */
+/* Thread stacks, for os_get_thread_index */
 extern u8 **vlib_thread_stacks;
 
 /* Number of thread stacks that the application needs */