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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/plugins/tracedump/tracedump.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/plugins/tracedump/tracedump.c')
-rw-r--r--src/plugins/tracedump/tracedump.c114
1 files changed, 112 insertions, 2 deletions
diff --git a/src/plugins/tracedump/tracedump.c b/src/plugins/tracedump/tracedump.c
index 21a0c3d0379..5347f82d612 100644
--- a/src/plugins/tracedump/tracedump.c
+++ b/src/plugins/tracedump/tracedump.c
@@ -33,6 +33,109 @@
tracedump_main_t tracedump_main;
+
+static void
+vl_api_trace_set_filters_t_handler (vl_api_trace_set_filters_t * mp)
+{
+ vlib_main_t *vm = vlib_get_main ();
+ tracedump_main_t *tdmp = &tracedump_main;
+ u32 node_index = clib_net_to_host_u32 (mp->node_index);
+ u32 flag = clib_net_to_host_u32 (mp->flag);
+ u32 count = clib_net_to_host_u32 (mp->count);
+ vl_api_trace_set_filters_reply_t *rmp;
+ int rv = 0;
+
+ if (flag == TRACE_FF_NONE)
+ {
+ count = node_index = 0;
+ }
+ else if (flag != TRACE_FF_INCLUDE_NODE && flag != TRACE_FF_EXCLUDE_NODE)
+ {
+ rv = VNET_API_ERROR_INVALID_VALUE;
+ goto done;
+ }
+
+ vlib_node_t *node;
+ node = vlib_get_node (vm, node_index);
+ if (!node)
+ {
+ rv = VNET_API_ERROR_NO_SUCH_NODE;
+ goto done;
+ }
+
+ trace_filter_set (node_index, flag, count);
+
+done:
+ REPLY_MACRO (VL_API_TRACE_SET_FILTERS_REPLY);
+}
+
+
+static void
+vl_api_trace_capture_packets_t_handler (vl_api_trace_capture_packets_t * mp)
+{
+ vlib_main_t *vm = vlib_get_main ();
+ tracedump_main_t *tdmp = &tracedump_main;
+ u32 add = clib_net_to_host_u32 (mp->max_packets);
+ u32 node_index = clib_net_to_host_u32 (mp->node_index);
+ u8 filter = mp->use_filter;
+ u8 verbose = mp->verbose;
+ u8 pre_clear = mp->pre_capture_clear;
+ vl_api_trace_capture_packets_reply_t *rmp;
+ int rv = 0;
+
+ if (!vnet_trace_placeholder)
+ vec_validate_aligned (vnet_trace_placeholder, 2048,
+ CLIB_CACHE_LINE_BYTES);
+
+ vlib_node_t *node;
+ node = vlib_get_node (vm, node_index);
+ if (!node)
+ {
+ rv = VNET_API_ERROR_NO_SUCH_NODE;
+ goto done;
+ }
+
+ if ((node->flags & VLIB_NODE_FLAG_TRACE_SUPPORTED) == 0)
+ {
+ /* FIXME: Make a new, better error like "UNSUPPORTED_NODE_OPERATION"? */
+ rv = VNET_API_ERROR_NO_SUCH_NODE;
+ goto done;
+ }
+
+ if (filter)
+ {
+ if (vlib_enable_disable_pkt_trace_filter (1) < 0) /* enable */
+ {
+ /* FIXME: Make a new error like "UNSUPPORTED_NODE_OPERATION"? */
+ rv = VNET_API_ERROR_NO_SUCH_NODE;
+ goto done;
+ }
+ }
+
+ if (pre_clear)
+ vlib_trace_stop_and_clear ();
+
+ trace_update_capture_options (add, node_index, filter, verbose);
+
+done:
+ REPLY_MACRO (VL_API_TRACE_CAPTURE_PACKETS_REPLY);
+}
+
+
+static void
+vl_api_trace_clear_capture_t_handler (vl_api_trace_clear_capture_t * mp)
+{
+ vl_api_trace_clear_capture_reply_t *rmp;
+ tracedump_main_t *tdmp = &tracedump_main;
+
+ vlib_trace_stop_and_clear ();
+
+ int rv = 0;
+ REPLY_MACRO (VL_API_TRACE_CLEAR_CAPTURE_REPLY);
+}
+
+
+
static int
trace_cmp (void *a1, void *a2)
{
@@ -120,6 +223,13 @@ vl_api_trace_dump_t_handler (vl_api_trace_dump_t * mp)
iterator_position = clib_net_to_host_u32 (mp->position);
max_records = clib_net_to_host_u32 (mp->max_records);
+ /* Don't overflow the existing queue space. */
+ svm_queue_t *q = rp->vl_input_queue;
+ u32 queue_slots_available = q->maxsize - q->cursize;
+ int chunk = (queue_slots_available > 0) ? queue_slots_available - 1 : 0;
+ if (chunk < max_records)
+ max_records = chunk;
+
/* Need a fresh cache for this client? */
if (vec_len (client_trace_cache) == 0
&& (iterator_thread_id != ~0 || iterator_position != ~0))
@@ -168,8 +278,7 @@ vl_api_trace_dump_t_handler (vl_api_trace_dump_t * mp)
vec_reset_length (s);
- s = format (s, "Packet %d\n%U\n\n", j + 1, format_vlib_trace,
- &vlib_global_main, th[0]);
+ s = format (s, "%U", format_vlib_trace, &vlib_global_main, th[0]);
dmp = vl_msg_api_alloc (sizeof (*dmp) + vec_len (s));
dmp->_vl_msg_id =
@@ -178,6 +287,7 @@ vl_api_trace_dump_t_handler (vl_api_trace_dump_t * mp)
last_thread_id = dmp->thread_id = ntohl (i);
last_position = dmp->position = ntohl (j);
vl_api_vec_to_api_string (s, &dmp->trace_data);
+ dmp->packet_number = htonl (j);
dmp->more_threads = 0;
dmp->more_this_thread = 0;