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authorDamjan Marion <damarion@cisco.com>2017-02-03 21:16:16 +0100
committerDamjan Marion <damarion@cisco.com>2017-02-03 21:16:16 +0100
commitbfe4dfa7089b5d2c03aa607ab72abbcd840cbbce (patch)
treef7f95f988229c70a45916367cfce104d0c27eb6c
parent62411e7d82dc4562003651a53e723ea938be2ebd (diff)
pg: add trace information for pg tx node
Change-Id: I31730d58c34331f25f5b02cd065be94251f1302c Signed-off-by: Damjan Marion <damarion@cisco.com>
-rw-r--r--src/vnet/pg/output.c28
-rw-r--r--src/vnet/pg/pg.h7
-rw-r--r--src/vnet/pg/stream.c20
3 files changed, 46 insertions, 9 deletions
diff --git a/src/vnet/pg/output.c b/src/vnet/pg/output.c
index 3d1f2660e20..ab57deefd24 100644
--- a/src/vnet/pg/output.c
+++ b/src/vnet/pg/output.c
@@ -37,6 +37,7 @@
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
+#include <vppinfra/string.h>
#include <vlib/vlib.h>
#include <vnet/vnet.h>
#include <vnet/pg/pg.h>
@@ -56,19 +57,28 @@ pg_output (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame)
while (__sync_lock_test_and_set (pif->lockp, 1))
;
- if (pif->pcap_file_name != 0)
+ while (n_left > 0)
{
- while (n_left > 0)
- {
- n_left--;
- u32 bi0 = buffers[0];
- buffers++;
+ n_left--;
+ u32 bi0 = buffers[0];
+ vlib_buffer_t *b = vlib_get_buffer (vm, bi0);
+ buffers++;
- pcap_add_buffer (&pif->pcap_main, vm, bi0,
- ETHERNET_MAX_PACKET_BYTES);
+ if (b->flags & VLIB_BUFFER_IS_TRACED)
+ {
+ pg_output_trace_t *t = vlib_add_trace (vm, node, b, sizeof (*t));
+ t->buffer_index = bi0;
+ clib_memcpy (&t->buffer, b, sizeof (b[0]) - sizeof (b->pre_data));
+ clib_memcpy (t->buffer.pre_data, b->data + b->current_data,
+ sizeof (t->buffer.pre_data));
}
- pcap_write (&pif->pcap_main);
+
+ if (pif->pcap_file_name != 0)
+ pcap_add_buffer (&pif->pcap_main, vm, bi0, ETHERNET_MAX_PACKET_BYTES);
}
+ if (pif->pcap_file_name != 0)
+ pcap_write (&pif->pcap_main);
+
vlib_buffer_free (vm, vlib_frame_args (frame), n_buffers);
if (PREDICT_FALSE (pif->lockp != 0))
diff --git a/src/vnet/pg/pg.h b/src/vnet/pg/pg.h
index a4027834035..111df91ae99 100644
--- a/src/vnet/pg/pg.h
+++ b/src/vnet/pg/pg.h
@@ -372,6 +372,13 @@ typedef struct
clib_error_t *pg_capture (pg_capture_args_t * a);
+typedef struct
+{
+ vlib_buffer_t buffer;
+ u32 buffer_index;
+}
+pg_output_trace_t;
+
#endif /* included_vlib_pg_h */
/*
diff --git a/src/vnet/pg/stream.c b/src/vnet/pg/stream.c
index 1ed7189ffc9..c46875e11ad 100644
--- a/src/vnet/pg/stream.c
+++ b/src/vnet/pg/stream.c
@@ -95,6 +95,25 @@ pg_stream_enable_disable (pg_main_t * pg, pg_stream_t * s, int want_enabled)
}
static u8 *
+format_pg_output_trace (u8 * s, va_list * va)
+{
+ CLIB_UNUSED (vlib_main_t * vm) = va_arg (*va, vlib_main_t *);
+ CLIB_UNUSED (vlib_node_t * node) = va_arg (*va, vlib_node_t *);
+ pg_output_trace_t *t = va_arg (*va, pg_output_trace_t *);
+ uword indent = format_get_indent (s);
+
+ s = format (s, "%Ubuffer 0x%x: %U",
+ format_white_space, indent,
+ t->buffer_index, format_vlib_buffer, &t->buffer);
+
+ s = format (s, "\n%U%U", format_white_space, indent,
+ format_ethernet_header_with_length, t->buffer.pre_data,
+ sizeof (t->buffer.pre_data));
+
+ return s;
+}
+
+static u8 *
format_pg_interface_name (u8 * s, va_list * args)
{
pg_main_t *pg = &pg_main;
@@ -125,6 +144,7 @@ VNET_DEVICE_CLASS (pg_dev_class) = {
.name = "pg",
.tx_function = pg_output,
.format_device_name = format_pg_interface_name,
+ .format_tx_trace = format_pg_output_trace,
.admin_up_down_function = pg_interface_admin_up_down,
};
/* *INDENT-ON* */