+ /* Enable w/ capture already enabled not allowed */
+ if (vm->dispatch_pcap_enable && a->enable)
+ return -7; /* VNET_API_ERROR_INVALID_VALUE */
+
+ /* Disable capture with capture already disabled, not interesting */
+ if (vm->dispatch_pcap_enable == 0 && a->enable == 0)
+ return -81; /* VNET_API_ERROR_VALUE_EXIST */
+
+ /* Change number of packets to capture while capturing */
+ if (vm->dispatch_pcap_enable && a->enable
+ && (pm->n_packets_to_capture != a->packets_to_capture))
+ return -8; /* VNET_API_ERROR_INVALID_VALUE_2 */
+
+ /* Independent of enable/disable, to allow buffer trace multi nodes */
+ if (a->buffer_trace_node_index != ~0)
+ {
+ /* *INDENT-OFF* */
+ foreach_vlib_main ((
+ {
+ tm = &this_vlib_main->trace_main;
+ tm->verbose = 0; /* not sure this ever did anything... */
+ vec_validate (tm->nodes, a->buffer_trace_node_index);
+ tn = tm->nodes + a->buffer_trace_node_index;
+ tn->limit += a->buffer_traces_to_capture;
+ tm->trace_enable = 1;
+ }));
+ /* *INDENT-ON* */
+ vec_add1 (vm->dispatch_buffer_trace_nodes, a->buffer_trace_node_index);
+ }
+
+ if (a->enable)
+ {
+ /* Clean up from previous run, if any */
+ vec_free (pm->file_name);
+ vec_free (pm->pcap_data);
+ memset (pm, 0, sizeof (*pm));
+
+ vec_validate_aligned (vnet_trace_dummy, 2048, CLIB_CACHE_LINE_BYTES);
+ if (pm->lock == 0)
+ clib_spinlock_init (&(pm->lock));
+
+ if (a->filename == 0)
+ a->filename = format (0, "/tmp/dispatch.pcap%c", 0);
+
+ pm->file_name = (char *) a->filename;
+ pm->n_packets_captured = 0;
+ pm->packet_type = PCAP_PACKET_TYPE_vpp;
+ pm->n_packets_to_capture = a->packets_to_capture;
+ /* *INDENT-OFF* */
+ foreach_vlib_main (({this_vlib_main->dispatch_pcap_enable = 1;}));
+ /* *INDENT-ON* */
+ }
+ else
+ {
+ /* *INDENT-OFF* */
+ foreach_vlib_main (({this_vlib_main->dispatch_pcap_enable = 0;}));
+ /* *INDENT-ON* */
+ vec_reset_length (vm->dispatch_buffer_trace_nodes);
+ if (pm->n_packets_captured)