Add verbose flag for packet trace, show hexdump in verbose dpdk input trace

Verbose trace can be enabled with:

 trace add dpdk-input 1 verbose

Change-Id: If58cfc561143d5a44f7d11e61d54b6835692a0e3
Signed-off-by: Damjan Marion <damarion@cisco.com>

vlib/vlib/trace.c

@@ -359,12 +359,18 @@ cli_add_trace_buffer (vlib_main_t * vm,
   vlib_trace_main_t * tm;
   vlib_trace_node_t * tn;
   u32 node_index, add;
+  u8 verbose = 0;
 
-  if (unformat (input, "%U %d", unformat_vlib_node, vm, &node_index, &add))
-    ;
-  else
-    return clib_error_create ("expected NODE COUNT, got `%U'",
-                              format_unformat_error, input);
+  while (unformat_check_input(input) != (uword)UNFORMAT_END_OF_INPUT)
+    {
+      if (unformat (input, "%U %d", unformat_vlib_node, vm, &node_index, &add))
+	;
+      else if (unformat (input, "verbose"))
+	verbose = 1;
+      else
+	return clib_error_create ("expected NODE COUNT, got `%U'",
+				  format_unformat_error, input);
+    }
 
   foreach_vlib_main (
   ({
@@ -372,6 +378,7 @@ cli_add_trace_buffer (vlib_main_t * vm,
     tm = &this_vlib_main->trace_main;
 
     tm->trace_active_hint = 1;
+    tm->verbose = verbose;
 
     oldheap = clib_mem_set_heap (this_vlib_main->heap_base);
 

vlib/vlib/trace.h

@@ -81,6 +81,9 @@ typedef struct {
 
   /* Per node trace counts. */
   vlib_trace_node_t * nodes;
+
+  /* verbosity */
+  int verbose;
 } vlib_trace_main_t;
 
 #endif /* included_vlib_trace_h */

vnet/vnet/devices/dpdk/dpdk.h

@@ -467,6 +467,7 @@ typedef struct {
   u16 queue_index;
   struct rte_mbuf mb;
   vlib_buffer_t buffer; /* Copy of VLIB buffer; pkt data stored in pre_data. */
+  u8 data[256];         /* First 256 data bytes, used for hexdump */
 } dpdk_rx_dma_trace_t;
 
 void vnet_buffer_needs_dpdk_mb (vlib_buffer_t * b);

vnet/vnet/devices/dpdk/format.c

@@ -662,6 +662,14 @@ u8 * format_dpdk_rx_dma_trace (u8 * s, va_list * va)
 	      format_white_space, indent,
 	      format_dpdk_rte_mbuf, &t->mb);
 #endif /* RTE_LIBRTE_MBUF_EXT_RX_OLFLAGS */
+  if (vm->trace_main.verbose)
+    {
+      s = format (s, "\n%UPacket Dump%s", format_white_space, indent + 2,
+		  t->mb.data_len > sizeof(t->data) ? " (truncated)": "");
+      s = format (s, "\n%U%U", format_white_space, indent + 4,
+		  format_hexdump, &t->data,
+		  t->mb.data_len > sizeof(t->data) ? sizeof(t->data) : t->mb.data_len);
+    }
   f = node->format_buffer;
   if (!f)
     f = format_hex_bytes;
@@ -726,11 +734,11 @@ u8 * format_dpdk_rte_mbuf (u8 * s, va_list * va)
   uword indent = format_get_indent (s) + 2;
 
   s = format (s, "PKT MBUF: port %d, nb_segs %d, pkt_len %d"
-              "\n%Ubuf_len %d, data_len %d, ol_flags 0x%x,"
+              "\n%Ubuf_len %d, data_len %d, ol_flags 0x%x, data_off %d"
               "\n%Upacket_type 0x%x",
               mb->port, mb->nb_segs, mb->pkt_len,
               format_white_space, indent,
-              mb->buf_len, mb->data_len, mb->ol_flags,
+              mb->buf_len, mb->data_len, mb->ol_flags, mb->data_off,
               format_white_space, indent,
               mb->packet_type);
 

vnet/vnet/devices/dpdk/node.c

@@ -380,6 +380,7 @@ void dpdk_rx_trace (dpdk_main_t * dm,
       clib_memcpy (&t0->mb, mb, sizeof (t0->mb));
       clib_memcpy (&t0->buffer, b0, sizeof (b0[0]) - sizeof (b0->pre_data));
       clib_memcpy (t0->buffer.pre_data, b0->data, sizeof (t0->buffer.pre_data));
+      clib_memcpy (&t0->data, mb->buf_addr + mb->data_off, sizeof (t0->data));
 
 #ifdef RTE_LIBRTE_MBUF_EXT_RX_OLFLAGS
       /*