#include <vlib/vlib.h>
#include <vlib/threads.h>
-u8 *vnet_trace_dummy;
+u8 *vnet_trace_placeholder;
/* Helper function for nodes which only trace buffer data. */
void
if (b0->flags & VLIB_BUFFER_IS_TRACED)
{
t0 = vlib_add_trace (vm, node, b0, n_buffer_data_bytes_in_trace);
- clib_memcpy (t0, b0->data + b0->current_data,
- n_buffer_data_bytes_in_trace);
+ clib_memcpy_fast (t0, b0->data + b0->current_data,
+ n_buffer_data_bytes_in_trace);
}
if (b1->flags & VLIB_BUFFER_IS_TRACED)
{
t1 = vlib_add_trace (vm, node, b1, n_buffer_data_bytes_in_trace);
- clib_memcpy (t1, b1->data + b1->current_data,
- n_buffer_data_bytes_in_trace);
+ clib_memcpy_fast (t1, b1->data + b1->current_data,
+ n_buffer_data_bytes_in_trace);
}
from += 2;
n_left -= 2;
if (b0->flags & VLIB_BUFFER_IS_TRACED)
{
t0 = vlib_add_trace (vm, node, b0, n_buffer_data_bytes_in_trace);
- clib_memcpy (t0, b0->data + b0->current_data,
- n_buffer_data_bytes_in_trace);
+ clib_memcpy_fast (t0, b0->data + b0->current_data,
+ n_buffer_data_bytes_in_trace);
}
from += 1;
n_left -= 1;
tm = &this_vlib_main->trace_main;
tm->trace_enable = 0;
+ vec_free (tm->nodes);
+ }));
+
+ foreach_vlib_main (
+ ({
+ tm = &this_vlib_main->trace_main;
for (i = 0; i < vec_len (tm->trace_buffer_pool); i++)
if (! pool_is_free_index (tm->trace_buffer_pool, i))
/* *INDENT-ON* */
}
-static u8 *
+u8 *
format_vlib_trace (u8 * s, va_list * va)
{
vlib_main_t *vm = va_arg (*va, vlib_main_t *);
};
/* *INDENT-ON* */
-static int
-trace_cmp (void *a1, void *a2)
+int
+trace_time_cmp (void *a1, void *a2)
{
vlib_trace_header_t **t1 = a1;
vlib_trace_header_t **t2 = a2;
if (tm->filter_flag == 0)
return 1;
+ /*
+ * When capturing a post-mortem dispatch trace,
+ * toss all existing traces once per dispatch cycle.
+ * So we can trace 4 billion pkts without running out of
+ * memory...
+ */
+ if (tm->filter_flag == FILTER_FLAG_POST_MORTEM)
+ return 0;
+
if (tm->filter_flag == FILTER_FLAG_INCLUDE)
{
while (h < e)
*/
n_accepted = 0;
/* *INDENT-OFF* */
- pool_foreach (h, tm->trace_buffer_pool,
- ({
+ pool_foreach (h, tm->trace_buffer_pool)
+ {
accept = filter_accept(tm, h[0]);
if ((n_accepted == tm->filter_count) || !accept)
vec_add1 (traces_to_remove, h);
else
n_accepted++;
- }));
+ }
/* *INDENT-ON* */
/* remove all traces that we don't want to keep */
trace_apply_filter(this_vlib_main);
traces = 0;
- pool_foreach (h, tm->trace_buffer_pool,
- ({
+ pool_foreach (h, tm->trace_buffer_pool)
+ {
vec_add1 (traces, h[0]);
- }));
+ }
if (vec_len (traces) == 0)
{
}
/* Sort them by increasing time. */
- vec_sort_with_function (traces, trace_cmp);
+ vec_sort_with_function (traces, trace_time_cmp);
for (i = 0; i < vec_len (traces); i++)
{
};
/* *INDENT-ON* */
+int vlib_enable_disable_pkt_trace_filter (int enable) __attribute__ ((weak));
+
+int
+vlib_enable_disable_pkt_trace_filter (int enable)
+{
+ return 0;
+}
+
+void
+vlib_trace_stop_and_clear (void)
+{
+ vlib_enable_disable_pkt_trace_filter (0); /* disble tracing */
+ clear_trace_buffer ();
+}
+
+
+void
+trace_update_capture_options (u32 add, u32 node_index, u32 filter, u8 verbose)
+{
+ vlib_trace_main_t *tm;
+ vlib_trace_node_t *tn;
+
+ if (add == ~0)
+ add = 50;
+
+ /* *INDENT-OFF* */
+ foreach_vlib_main ((
+ {
+ tm = &this_vlib_main->trace_main;
+ tm->verbose = verbose;
+ vec_validate (tm->nodes, node_index);
+ tn = tm->nodes + node_index;
+
+ /*
+ * Adding 0 makes no real sense, and there wa no other way
+ * to explicilty zero-out the limits and count, so make
+ * an "add 0" request really be "set to 0".
+ */
+ if (add == 0)
+ tn->limit = tn->count = 0;
+ else
+ tn->limit += add;
+ }));
+
+ foreach_vlib_main ((
+ {
+ tm = &this_vlib_main->trace_main;
+ tm->trace_enable = 1;
+ }));
+ /* *INDENT-ON* */
+}
+
static clib_error_t *
cli_add_trace_buffer (vlib_main_t * vm,
unformat_input_t * input, vlib_cli_command_t * cmd)
{
unformat_input_t _line_input, *line_input = &_line_input;
- vlib_trace_main_t *tm;
- vlib_trace_node_t *tn;
+ vlib_node_t *node;
u32 node_index, add;
u8 verbose = 0;
+ int filter = 0;
clib_error_t *error = 0;
if (!unformat_user (input, unformat_line_input, line_input))
return 0;
- if (vnet_trace_dummy == 0)
- vec_validate_aligned (vnet_trace_dummy, 2048, CLIB_CACHE_LINE_BYTES);
+ if (vnet_trace_placeholder == 0)
+ vec_validate_aligned (vnet_trace_placeholder, 2048,
+ CLIB_CACHE_LINE_BYTES);
while (unformat_check_input (line_input) != (uword) UNFORMAT_END_OF_INPUT)
{
;
else if (unformat (line_input, "verbose"))
verbose = 1;
+ else if (unformat (line_input, "filter"))
+ filter = 1;
else
{
error = clib_error_create ("expected NODE COUNT, got `%U'",
}
}
- /* *INDENT-OFF* */
- foreach_vlib_main ((
+ node = vlib_get_node (vm, node_index);
+
+ if ((node->flags & VLIB_NODE_FLAG_TRACE_SUPPORTED) == 0)
{
- tm = &this_vlib_main->trace_main;
- tm->verbose = verbose;
- vec_validate (tm->nodes, node_index);
- tn = tm->nodes + node_index;
- tn->limit += add;
- tm->trace_enable = 1;
- }));
- /* *INDENT-ON* */
+ error = clib_error_create ("node '%U' doesn't support per-node "
+ "tracing. There may be another way to "
+ "initiate trace on this node.",
+ format_vlib_node_name, vm, node_index);
+ goto done;
+ }
+
+ if (filter)
+ {
+ if (vlib_enable_disable_pkt_trace_filter (1 /* enable */ ))
+ {
+ error = clib_error_create ("No packet trace filter configured...");
+ goto done;
+ }
+ }
+
+ trace_update_capture_options (add, node_index, filter, verbose);
done:
unformat_free (line_input);
/* *INDENT-OFF* */
VLIB_CLI_COMMAND (add_trace_cli,static) = {
.path = "trace add",
- .short_help = "Trace given number of packets",
+ .short_help = "trace add <input-graph-node> <add'l-pkts-for-node-> [filter] [verbose]",
.function = cli_add_trace_buffer,
};
/* *INDENT-ON* */
-
/*
* Configure a filter for packet traces.
*
* criteria (e.g. input sw_if_index, mac address) but for now just checks if
* a specified node is in the trace or not in the trace.
*/
+
+void
+trace_filter_set (u32 node_index, u32 flag, u32 count)
+{
+ /* *INDENT-OFF* */
+ foreach_vlib_main (
+ ({
+ vlib_trace_main_t *tm;
+
+ tm = &this_vlib_main->trace_main;
+ tm->filter_node_index = node_index;
+ tm->filter_flag = flag;
+ tm->filter_count = count;
+
+ /*
+ * Clear the trace limits to stop any in-progress tracing
+ * Prevents runaway trace allocations when the filter changes
+ * (or is removed)
+ */
+ vec_free (tm->nodes);
+ }));
+ /* *INDENT-ON* */
+}
+
+
static clib_error_t *
cli_filter_trace (vlib_main_t * vm,
unformat_input_t * input, vlib_cli_command_t * cmd)
{
- vlib_trace_main_t *tm = &vm->trace_main;
u32 filter_node_index;
u32 filter_flag;
u32 filter_count;
("expected 'include NODE COUNT' or 'exclude NODE COUNT' or 'none', got `%U'",
format_unformat_error, input);
- /* *INDENT-OFF* */
- foreach_vlib_main (
- ({
- tm = &this_vlib_main->trace_main;
- tm->filter_node_index = filter_node_index;
- tm->filter_flag = filter_flag;
- tm->filter_count = filter_count;
-
- /*
- * Clear the trace limits to stop any in-progress tracing
- * Prevents runaway trace allocations when the filter changes
- * (or is removed)
- */
- vec_free (tm->nodes);
- }));
- /* *INDENT-ON* */
+ trace_filter_set (filter_node_index, filter_flag, filter_count);
return 0;
}
/* *INDENT-OFF* */
VLIB_CLI_COMMAND (filter_trace_cli,static) = {
.path = "trace filter",
- .short_help = "filter trace output - include NODE COUNT | exclude NODE COUNT | none",
+ .short_help = "trace filter none | [include|exclude] NODE COUNT",
.function = cli_filter_trace,
};
/* *INDENT-ON* */
cli_clear_trace_buffer (vlib_main_t * vm,
unformat_input_t * input, vlib_cli_command_t * cmd)
{
- clear_trace_buffer ();
+ vlib_trace_stop_and_clear ();
return 0;
}
};
/* *INDENT-ON* */
-/* Dummy function to get us linked in. */
+/* Placeholder function to get us linked in. */
void
vlib_trace_cli_reference (void)
{
}
+int
+vnet_is_packet_traced (vlib_buffer_t * b,
+ u32 classify_table_index, int func)
+__attribute__ ((weak));
+
+int
+vnet_is_packet_traced (vlib_buffer_t * b, u32 classify_table_index, int func)
+{
+ clib_warning ("BUG: STUB called");
+ return 1;
+}
+
+void *
+vlib_add_trace (vlib_main_t * vm,
+ vlib_node_runtime_t * r, vlib_buffer_t * b, u32 n_data_bytes)
+{
+ return vlib_add_trace_inline (vm, r, b, n_data_bytes);
+}
+
+
+
/*
* fd.io coding-style-patch-verification: ON
*
Code Review / vpp.git / blobdiff