src/examples/vlib/main_stub.c - fdio/vpp - Gitiles

 /*
  * 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.
  */
 #include <vlib/vlib.h>
 #include <vlib/unix/unix.h>
 #include <math.h>

 int
 main (int argc, char *argv[])
 {
   return vlib_unix_main (argc, argv);
 }

 static clib_error_t *
 main_stub_init (vlib_main_t * vm)
 {
   clib_error_t *error;

   if ((error =
        unix_physmem_init (vm, /* fail_if_physical_memory_not_present */ 0)))
     return error;

   if ((error = vlib_call_init_function (vm, unix_cli_init)))
     return error;

   return error;
 }

 VLIB_INIT_FUNCTION (main_stub_init);

 #if 0
 /* Node test code. */
 typedef struct
 {
   int scalar;
   int vector[0];
 } my_frame_t;

 static u8 *
 format_my_node_frame (u8 * s, va_list * va)
 {
   vlib_frame_t *f = va_arg (*va, vlib_frame_t *);
   my_frame_t *g = vlib_frame_args (f);
   int i;

   s = format (s, "scalar %d, vector { ", g->scalar);
   for (i = 0; i < f->n_vectors; i++)
     s = format (s, "%d, ", g->vector[i]);
   s = format (s, " }");

   return s;
 }

 static uword
 my_func (vlib_main_t * vm, vlib_node_runtime_t * rt, vlib_frame_t * f)
 {
   vlib_node_t *node;
   my_frame_t *y;
   u32 i, n_left = 0;
   static int serial;
   int verbose;

   node = vlib_get_node (vm, rt->node_index);

   verbose = 0;

   if (verbose && f)
     vlib_cli_output (vm, "%v: call frame %p %U", node->name,
 		     f, format_my_node_frame, f);

   if (rt->n_next_nodes > 0)
     {
       vlib_frame_t *next = vlib_get_next_frame (vm, rt, /* next index */ 0);
       n_left = VLIB_FRAME_SIZE - next->n_vectors;
       y = vlib_frame_args (next);
       y->scalar = serial++;
     }
   else
     y = 0;

   for (i = 0; i < 5; i++)
     {
       if (y)
 	{
 	  ASSERT (n_left > 0);
 	  n_left--;
 	  y->vector[i] = y->scalar + i;
 	}
     }
   if (y)
     vlib_put_next_frame (vm, rt, /* next index */ 0, n_left);

   if (verbose)
     vlib_cli_output (vm, "%v: return frame %p", node->name, f);

   return i;
 }

 /* *INDENT-OFF* */
 VLIB_REGISTER_NODE (my_node1,static) = {
   .function = my_func,
   .type = VLIB_NODE_TYPE_INPUT,
   .name = "my-node1",
   .scalar_size = sizeof (my_frame_t),
   .vector_size = STRUCT_SIZE_OF (my_frame_t, vector[0]),
   .n_next_nodes = 1,
   .next_nodes = {
     [0] = "my-node2",
   },
 };
 /* *INDENT-ON* */

 /* *INDENT-OFF* */
 VLIB_REGISTER_NODE (my_node2,static) = {
   .function = my_func,
   .name = "my-node2",
   .scalar_size = sizeof (my_frame_t),
   .vector_size = STRUCT_SIZE_OF (my_frame_t, vector[0]),
 };
 /* *INDENT-ON* */

 #endif

 #if 0

 typedef enum
 {
   MY_EVENT_TYPE1,
   MY_EVENT_TYPE2,
 } my_process_completion_type_t;

 typedef struct
 {
   int a;
   f64 b;
 } my_process_event_data_t;

 static u8 *
 format_my_process_event_data (u8 * s, va_list * va)
 {
   my_process_event_data_t *d = va_arg (*va, my_process_event_data_t *);
   return format (s, "{ a %d b %.6f}", d->a, d->b);
 }

 static uword
 my_proc (vlib_main_t * vm, vlib_node_runtime_t * rt, vlib_frame_t * f)
 {
   vlib_node_t *node;
   u32 i;

   node = vlib_get_node (vm, rt->node_index);

   vlib_cli_output (vm, "%v: call frame %p", node->name, f);

   for (i = 0; i < 5; i++)
     {
       vlib_cli_output (vm, "%v: %d", node->name, i);
       vlib_process_suspend (vm, 1e0 /* secs */ );
     }

   vlib_cli_output (vm, "%v: return frame %p", node->name, f);

   if (0)
     {
       uword n_events_seen, type, *data = 0;

       for (n_events_seen = 0; n_events_seen < 2;)
 	{
 	  vlib_process_wait_for_event (vm);
 	  type = vlib_process_get_events (vm, &data);
 	  n_events_seen += vec_len (data);
 	  vlib_cli_output (vm, "%U %v: completion #%d type %d data 0x%wx",
 			   format_time_interval, "h:m:s:u",
 			   vlib_time_now (vm), node->name, i, type, data[0]);
 	  _vec_len (data) = 0;
 	}

       vec_free (data);
     }
   else
     {
       uword n_events_seen, i, type;
       my_process_event_data_t *data;
       for (n_events_seen = 0; n_events_seen < 2;)
 	{
 	  vlib_process_wait_for_event (vm);
 	  data = vlib_process_get_event_data (vm, &type);
 	  vec_foreach_index (i, data)
 	  {
 	    vlib_cli_output (vm, "%U event type %d data %U",
 			     format_time_interval, "h:m:s:u",
 			     vlib_time_now (vm), type,
 			     format_my_process_event_data, data);
 	  }
 	  n_events_seen += vec_len (data);
 	  vlib_process_put_event_data (vm, data);
 	}
     }

   return i;
 }

 /* *INDENT-OFF* */
 VLIB_REGISTER_NODE (my_proc_node,static) = {
   .function = my_proc,
   .type = VLIB_NODE_TYPE_PROCESS,
   .name = "my-proc",
 };
 /* *INDENT-ON* */

 static uword
 my_proc_input (vlib_main_t * vm, vlib_node_runtime_t * rt, vlib_frame_t * f)
 {
   static int i;

   if (i++ < 2)
     {
       if (0)
 	vlib_process_signal_event (vm, my_proc_node.index,
 				   i == 1 ? MY_EVENT_TYPE1 : MY_EVENT_TYPE2,
 				   0x12340000 + i);
       else
 	{
 	  my_process_event_data_t *d;
 	  f64 dt = 5;
 	  d = vlib_process_signal_event_at_time (vm,
 						 i * dt,
 						 my_proc_node.index,
 						 i ==
 						 1 ? MY_EVENT_TYPE1 :
 						 MY_EVENT_TYPE2,
 						 1 /* elts */ ,
 						 sizeof (d[0]));
 	  d->a = i;
 	  d->b = vlib_time_now (vm);
 	}
     }
   else
     vlib_node_set_state (vm, rt->node_index, VLIB_NODE_STATE_DISABLED);

   return 0;
 }

 /* *INDENT-OFF* */
 VLIB_REGISTER_NODE (my_proc_input_node,static) = {
   .function = my_proc_input,
   .type = VLIB_NODE_TYPE_INPUT,
   .name = "my-proc-input",
 };
 /* *INDENT-ON* */

 static uword
 _unformat_farith (unformat_input_t * i, va_list * args)
 {
   u32 prec = va_arg (*args, u32);
   f64 *result = va_arg (*args, f64 *);
   f64 tmp[2];

   /* Binary operations in from lowest to highest precedence. */
   char *binops[] = {
     "+%U", "-%U", "/%U", "*%U", "^%U",
   };

   if (prec <= ARRAY_LEN (binops) - 1
       && unformat_user (i, _unformat_farith, prec + 1, &tmp[0]))
     {
       int p;
       for (p = prec; p < ARRAY_LEN (binops); p++)
 	{
 	  if (unformat (i, binops[p], _unformat_farith, prec + 0, &tmp[1]))
 	    {
 	      switch (binops[p][0])
 		{
 		case '+':
 		  result[0] = tmp[0] + tmp[1];
 		  break;
 		case '-':
 		  result[0] = tmp[0] - tmp[1];
 		  break;
 		case '/':
 		  result[0] = tmp[0] / tmp[1];
 		  break;
 		case '*':
 		  result[0] = tmp[0] * tmp[1];
 		  break;
 		case '^':
 		  result[0] = pow (tmp[0], tmp[1]);
 		  break;
 		default:
 		  abort ();
 		}
 	      return 1;
 	    }
 	}
       result[0] = tmp[0];
       return 1;
     }

   else if (unformat (i, "-%U", _unformat_farith, prec + 0, &tmp[0]))
     {
       result[0] = -tmp[0];
       return 1;
     }

   else if (unformat (i, "(%U)", _unformat_farith, 0, &tmp[0]))
     {
       result[0] = tmp[0];
       return 1;
     }

   else if (unformat (i, "%f", result))
     return 1;

   else
     return 0;
 }

 static uword
 unformat_farith (unformat_input_t * i, va_list * args)
 {
   CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
   f64 *result = va_arg (*args, f64 *);
   return unformat_user (i, _unformat_farith, 0, result);
 }

 static uword
 unformat_integer (unformat_input_t * i, va_list * args)
 {
   CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
   u32 *data = va_arg (*args, u32 *);
   return unformat (i, "%d", data);
 }

 static VLIB_CLI_PARSE_RULE (my_parse_rule1) =
 {
 .name = "decimal_integer",.short_help =
     "a decimal integer",.unformat_function = unformat_integer,.data_size =
     sizeof (u32),};

 static VLIB_CLI_PARSE_RULE (my_parse_rule2) =
 {
 .name = "float_expression",.short_help =
     "floating point expression",.unformat_function =
     unformat_farith,.data_size = sizeof (f64),};

 static clib_error_t *
 bar_command (vlib_main_t * vm,
 	     unformat_input_t * input, vlib_cli_command_t * cmd)
 {
   switch (cmd->function_arg)
     {
     case 2:
       {
 	u32 *d, *e;
 	d = vlib_cli_get_parse_rule_result (vm, 0);
 	e = vlib_cli_get_parse_rule_result (vm, 1);
 	vlib_cli_output (vm, "bar2 %d %d", d[0], e[0]);
 	break;
       }

     case 1:
       {
 	u32 *d = vlib_cli_get_parse_rule_result (vm, 0);
 	vlib_cli_output (vm, "bar1 %d", d[0]);
 	break;
       }

     case 3:
       {
 	f64 *d = vlib_cli_get_parse_rule_result (vm, 0);
 	vlib_cli_output (vm, "expr %.6f", d[0]);
       }
     }

   return 0;
 }

 /* *INDENT-OFF* */
 VLIB_CLI_COMMAND (bar_command2, static) = {
   .path = "bar %decimal_integer",
   .short_help = "bar1 command",
   .function = bar_command,
   .function_arg = 1,
 };
 VLIB_CLI_COMMAND (bar_command1, static) = {
   .path = "bar %decimal_integer %decimal_integer",
   .short_help = "bar2 command",
   .function = bar_command,
   .function_arg = 2,
 };
 VLIB_CLI_COMMAND (bar_command3, static) = {
   .path = "zap %float_expression",
   .short_help = "bar3 command",
   .function = bar_command,
   .function_arg = 3,
 };
 /* *INDENT-ON* */

 #endif

 /*
  * fd.io coding-style-patch-verification: ON
  *
  * Local Variables:
  * eval: (c-set-style "gnu")
  * End:
  */
	/*
	* 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.
	*/
	#include <vlib/vlib.h>
	#include <vlib/unix/unix.h>
	#include <math.h>

	int
	main (int argc, char *argv[])
	{
	return vlib_unix_main (argc, argv);
	}

	static clib_error_t *
	main_stub_init (vlib_main_t * vm)
	{
	clib_error_t *error;

	if ((error =
	unix_physmem_init (vm, /* fail_if_physical_memory_not_present */ 0)))
	return error;

	if ((error = vlib_call_init_function (vm, unix_cli_init)))
	return error;

	return error;
	}

	VLIB_INIT_FUNCTION (main_stub_init);

	#if 0
	/* Node test code. */
	typedef struct
	{
	int scalar;
	int vector[0];
	} my_frame_t;

	static u8 *
	format_my_node_frame (u8 * s, va_list * va)
	{
	vlib_frame_t f = va_arg (va, vlib_frame_t *);
	my_frame_t *g = vlib_frame_args (f);
	int i;

	s = format (s, "scalar %d, vector { ", g->scalar);
	for (i = 0; i < f->n_vectors; i++)
	s = format (s, "%d, ", g->vector[i]);
	s = format (s, " }");

	return s;
	}

	static uword
	my_func (vlib_main_t * vm, vlib_node_runtime_t * rt, vlib_frame_t * f)
	{
	vlib_node_t *node;
	my_frame_t *y;
	u32 i, n_left = 0;
	static int serial;
	int verbose;

	node = vlib_get_node (vm, rt->node_index);

	verbose = 0;

	if (verbose && f)
	vlib_cli_output (vm, "%v: call frame %p %U", node->name,
	f, format_my_node_frame, f);

	if (rt->n_next_nodes > 0)
	{
	vlib_frame_t next = vlib_get_next_frame (vm, rt, / next index */ 0);
	n_left = VLIB_FRAME_SIZE - next->n_vectors;
	y = vlib_frame_args (next);
	y->scalar = serial++;
	}
	else
	y = 0;

	for (i = 0; i < 5; i++)
	{
	if (y)
	{
	ASSERT (n_left > 0);
	n_left--;
	y->vector[i] = y->scalar + i;
	}
	}
	if (y)
	vlib_put_next_frame (vm, rt, /* next index */ 0, n_left);

	if (verbose)
	vlib_cli_output (vm, "%v: return frame %p", node->name, f);

	return i;
	}

	/* INDENT-OFF */
	VLIB_REGISTER_NODE (my_node1,static) = {
	.function = my_func,
	.type = VLIB_NODE_TYPE_INPUT,
	.name = "my-node1",
	.scalar_size = sizeof (my_frame_t),
	.vector_size = STRUCT_SIZE_OF (my_frame_t, vector[0]),
	.n_next_nodes = 1,
	.next_nodes = {
	[0] = "my-node2",
	},
	};
	/* INDENT-ON */

	/* INDENT-OFF */
	VLIB_REGISTER_NODE (my_node2,static) = {
	.function = my_func,
	.name = "my-node2",
	.scalar_size = sizeof (my_frame_t),
	.vector_size = STRUCT_SIZE_OF (my_frame_t, vector[0]),
	};
	/* INDENT-ON */

	#endif

	#if 0

	typedef enum
	{
	MY_EVENT_TYPE1,
	MY_EVENT_TYPE2,
	} my_process_completion_type_t;

	typedef struct
	{
	int a;
	f64 b;
	} my_process_event_data_t;

	static u8 *
	format_my_process_event_data (u8 * s, va_list * va)
	{
	my_process_event_data_t d = va_arg (va, my_process_event_data_t *);
	return format (s, "{ a %d b %.6f}", d->a, d->b);
	}

	static uword
	my_proc (vlib_main_t * vm, vlib_node_runtime_t * rt, vlib_frame_t * f)
	{
	vlib_node_t *node;
	u32 i;

	node = vlib_get_node (vm, rt->node_index);

	vlib_cli_output (vm, "%v: call frame %p", node->name, f);

	for (i = 0; i < 5; i++)
	{
	vlib_cli_output (vm, "%v: %d", node->name, i);
	vlib_process_suspend (vm, 1e0 /* secs */ );
	}

	vlib_cli_output (vm, "%v: return frame %p", node->name, f);

	if (0)
	{
	uword n_events_seen, type, *data = 0;

	for (n_events_seen = 0; n_events_seen < 2;)
	{
	vlib_process_wait_for_event (vm);
	type = vlib_process_get_events (vm, &data);
	n_events_seen += vec_len (data);
	vlib_cli_output (vm, "%U %v: completion #%d type %d data 0x%wx",
	format_time_interval, "h:m:s:u",
	vlib_time_now (vm), node->name, i, type, data[0]);
	_vec_len (data) = 0;
	}

	vec_free (data);
	}
	else
	{
	uword n_events_seen, i, type;
	my_process_event_data_t *data;
	for (n_events_seen = 0; n_events_seen < 2;)
	{
	vlib_process_wait_for_event (vm);
	data = vlib_process_get_event_data (vm, &type);
	vec_foreach_index (i, data)
	{
	vlib_cli_output (vm, "%U event type %d data %U",
	format_time_interval, "h:m:s:u",
	vlib_time_now (vm), type,
	format_my_process_event_data, data);
	}
	n_events_seen += vec_len (data);
	vlib_process_put_event_data (vm, data);
	}
	}

	return i;
	}

	/* INDENT-OFF */
	VLIB_REGISTER_NODE (my_proc_node,static) = {
	.function = my_proc,
	.type = VLIB_NODE_TYPE_PROCESS,
	.name = "my-proc",
	};
	/* INDENT-ON */

	static uword
	my_proc_input (vlib_main_t * vm, vlib_node_runtime_t * rt, vlib_frame_t * f)
	{
	static int i;

	if (i++ < 2)
	{
	if (0)
	vlib_process_signal_event (vm, my_proc_node.index,
	i == 1 ? MY_EVENT_TYPE1 : MY_EVENT_TYPE2,
	0x12340000 + i);
	else
	{
	my_process_event_data_t *d;
	f64 dt = 5;
	d = vlib_process_signal_event_at_time (vm,
	i * dt,
	my_proc_node.index,
	i ==
	1 ? MY_EVENT_TYPE1 :
	MY_EVENT_TYPE2,
	1 /* elts */ ,
	sizeof (d[0]));
	d->a = i;
	d->b = vlib_time_now (vm);
	}
	}
	else
	vlib_node_set_state (vm, rt->node_index, VLIB_NODE_STATE_DISABLED);

	return 0;
	}

	/* INDENT-OFF */
	VLIB_REGISTER_NODE (my_proc_input_node,static) = {
	.function = my_proc_input,
	.type = VLIB_NODE_TYPE_INPUT,
	.name = "my-proc-input",
	};
	/* INDENT-ON */

	static uword
	_unformat_farith (unformat_input_t * i, va_list * args)
	{
	u32 prec = va_arg (*args, u32);
	f64 result = va_arg (args, f64 *);
	f64 tmp[2];

	/* Binary operations in from lowest to highest precedence. */
	char *binops[] = {
	"+%U", "-%U", "/%U", "*%U", "^%U",
	};

	if (prec <= ARRAY_LEN (binops) - 1
	&& unformat_user (i, _unformat_farith, prec + 1, &tmp[0]))
	{
	int p;
	for (p = prec; p < ARRAY_LEN (binops); p++)
	{
	if (unformat (i, binops[p], _unformat_farith, prec + 0, &tmp[1]))
	{
	switch (binops[p][0])
	{
	case '+':
	result[0] = tmp[0] + tmp[1];
	break;
	case '-':
	result[0] = tmp[0] - tmp[1];
	break;
	case '/':
	result[0] = tmp[0] / tmp[1];
	break;
	case '*':
	result[0] = tmp[0] * tmp[1];
	break;
	case '^':
	result[0] = pow (tmp[0], tmp[1]);
	break;
	default:
	abort ();
	}
	return 1;
	}
	}
	result[0] = tmp[0];
	return 1;
	}

	else if (unformat (i, "-%U", _unformat_farith, prec + 0, &tmp[0]))
	{
	result[0] = -tmp[0];
	return 1;
	}

	else if (unformat (i, "(%U)", _unformat_farith, 0, &tmp[0]))
	{
	result[0] = tmp[0];
	return 1;
	}

	else if (unformat (i, "%f", result))
	return 1;

	else
	return 0;
	}

	static uword
	unformat_farith (unformat_input_t * i, va_list * args)
	{
	CLIB_UNUSED (vlib_main_t * vm) = va_arg (args, vlib_main_t );
	f64 result = va_arg (args, f64 *);
	return unformat_user (i, _unformat_farith, 0, result);
	}

	static uword
	unformat_integer (unformat_input_t * i, va_list * args)
	{
	CLIB_UNUSED (vlib_main_t * vm) = va_arg (args, vlib_main_t );
	u32 data = va_arg (args, u32 *);
	return unformat (i, "%d", data);
	}

	static VLIB_CLI_PARSE_RULE (my_parse_rule1) =
	{
	.name = "decimal_integer",.short_help =
	"a decimal integer",.unformat_function = unformat_integer,.data_size =
	sizeof (u32),};

	static VLIB_CLI_PARSE_RULE (my_parse_rule2) =
	{
	.name = "float_expression",.short_help =
	"floating point expression",.unformat_function =
	unformat_farith,.data_size = sizeof (f64),};

	static clib_error_t *
	bar_command (vlib_main_t * vm,
	unformat_input_t * input, vlib_cli_command_t * cmd)
	{
	switch (cmd->function_arg)
	{
	case 2:
	{
	u32 d, e;
	d = vlib_cli_get_parse_rule_result (vm, 0);
	e = vlib_cli_get_parse_rule_result (vm, 1);
	vlib_cli_output (vm, "bar2 %d %d", d[0], e[0]);
	break;
	}

	case 1:
	{
	u32 *d = vlib_cli_get_parse_rule_result (vm, 0);
	vlib_cli_output (vm, "bar1 %d", d[0]);
	break;
	}

	case 3:
	{
	f64 *d = vlib_cli_get_parse_rule_result (vm, 0);
	vlib_cli_output (vm, "expr %.6f", d[0]);
	}
	}

	return 0;
	}

	/* INDENT-OFF */
	VLIB_CLI_COMMAND (bar_command2, static) = {
	.path = "bar %decimal_integer",
	.short_help = "bar1 command",
	.function = bar_command,
	.function_arg = 1,
	};
	VLIB_CLI_COMMAND (bar_command1, static) = {
	.path = "bar %decimal_integer %decimal_integer",
	.short_help = "bar2 command",
	.function = bar_command,
	.function_arg = 2,
	};
	VLIB_CLI_COMMAND (bar_command3, static) = {
	.path = "zap %float_expression",
	.short_help = "bar3 command",
	.function = bar_command,
	.function_arg = 3,
	};
	/* INDENT-ON */

	#endif

	/*
	* fd.io coding-style-patch-verification: ON
	*
	* Local Variables:
	* eval: (c-set-style "gnu")
	* End:
	*/