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authorJon Loeliger <jdl@netgate.com>2020-05-11 08:43:51 -0500
committerDave Barach <openvpp@barachs.net>2020-10-06 10:49:27 +0000
commitc0b195450b31f7092834c0f14a27ca929faf8bca (patch)
tree0129c95d2dcd184db08eb88243769d1beb74e273 /src/vlib/trace.c
parentd20bc1d30a913e783a39919268c9870cbfe8817f (diff)
feature: Add packet trace API
Also spiffed up the vpp_api_test plugin loader so it executes VLIB_INIT_FUNCTIONs and VLIB_API_INIT_FUNCTIONs. Type: feature Change-Id: Id9a4f455d73738c41bcfea220df2112bb9679681 Signed-off-by: Jon Loeliger <jdl@netgate.com> Signed-off-by: Ole Troan <ot@cisco.com> Signed-off-by: Dave Barach <dave@barachs.net>
Diffstat (limited to 'src/vlib/trace.c')
-rw-r--r--src/vlib/trace.c121
1 files changed, 84 insertions, 37 deletions
diff --git a/src/vlib/trace.c b/src/vlib/trace.c
index 384885a1a53..abd116622c7 100644
--- a/src/vlib/trace.c
+++ b/src/vlib/trace.c
@@ -122,6 +122,12 @@ clear_trace_buffer (void)
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))
@@ -175,8 +181,8 @@ VLIB_CLI_COMMAND (trace_cli_command,static) = {
};
/* *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;
@@ -316,7 +322,7 @@ cli_show_trace_buffer (vlib_main_t * vm,
}
/* 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++)
{
@@ -352,20 +358,63 @@ VLIB_CLI_COMMAND (show_trace_cli,static) = {
/* *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_node_t *node;
- vlib_trace_node_t *tn;
u32 node_index, add;
u8 verbose = 0;
int filter = 0;
@@ -415,17 +464,7 @@ cli_add_trace_buffer (vlib_main_t * vm,
}
}
- /* *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;
- tn->limit += add;
- tm->trace_enable = 1;
- }));
- /* *INDENT-ON* */
+ trace_update_capture_options (add, node_index, filter, verbose);
done:
unformat_free (line_input);
@@ -436,7 +475,7 @@ done:
/* *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* */
@@ -478,11 +517,35 @@ VLIB_CLI_COMMAND (add_trace_cli,static) = {
* 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;
@@ -510,22 +573,7 @@ cli_filter_trace (vlib_main_t * vm,
("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;
}
@@ -533,7 +581,7 @@ cli_filter_trace (vlib_main_t * vm,
/* *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* */
@@ -542,8 +590,7 @@ static clib_error_t *
cli_clear_trace_buffer (vlib_main_t * vm,
unformat_input_t * input, vlib_cli_command_t * cmd)
{
- vlib_enable_disable_pkt_trace_filter (0 /* enable */ );
- clear_trace_buffer ();
+ vlib_trace_stop_and_clear ();
return 0;
}