f->n_vectors = 0;
f->scalar_size = scalar_size;
f->vector_size = vector_size;
+ f->flags = 0;
fs->n_alloc_frames += 1;
{
nf->flags &= ~VLIB_FRAME_PENDING;
f->n_vectors = 0;
+ f->flags = 0;
}
/* Allocate new frame if current one is already full. */
#endif
}
+static void
+dispatch_pcap_trace (vlib_main_t * vm,
+ vlib_node_runtime_t * node, vlib_frame_t * frame)
+{
+ int i;
+ vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **bufp, *b;
+ u8 name_tlv[64];
+ pcap_main_t *pm = &vm->dispatch_pcap_main;
+ vlib_trace_main_t *tm = &vm->trace_main;
+ u32 capture_size;
+ vlib_node_t *n;
+ u8 *packet_trace = 0;
+ i32 n_left;
+ f64 time_now = vlib_time_now (vm);
+ u32 *from;
+ u32 name_length;
+ u16 trace_length;
+ u8 version[2];
+ u8 *d;
+
+ /* Input nodes don't have frames yet */
+ if (frame == 0 || frame->n_vectors == 0)
+ return;
+
+ from = vlib_frame_vector_args (frame);
+ vlib_get_buffers (vm, from, bufs, frame->n_vectors);
+ bufp = bufs;
+
+ /* Create a node name TLV, since WS can't possibly guess */
+ n = vlib_get_node (vm, node->node_index);
+ name_length = vec_len (n->name);
+ name_length = name_length < ARRAY_LEN (name_tlv) - 2 ?
+ name_length : ARRAY_LEN (name_tlv) - 2;
+
+ name_tlv[0] = (u8) name_length;
+ clib_memcpy_fast (name_tlv + 1, n->name, name_length);
+ name_tlv[name_length + 1] = 0;
+
+ for (i = 0; i < frame->n_vectors; i++)
+ {
+ if (PREDICT_TRUE (pm->n_packets_captured < pm->n_packets_to_capture))
+ {
+ b = bufp[i];
+
+ version[0] = VLIB_PCAP_MAJOR_VERSION;
+ version[1] = VLIB_PCAP_MINOR_VERSION;
+
+ vec_reset_length (packet_trace);
+
+ /* Is this packet traced? */
+ if (PREDICT_FALSE (b->flags & VLIB_BUFFER_IS_TRACED))
+ {
+ vlib_trace_header_t **h
+ = pool_elt_at_index (tm->trace_buffer_pool, b->trace_index);
+
+ packet_trace = format (packet_trace, "%U%c",
+ format_vlib_trace, vm, h[0], 0);
+ }
+
+ /* Figure out how many bytes we're capturing */
+ /* *INDENT-OFF* */
+ capture_size = (sizeof (vlib_buffer_t) - VLIB_BUFFER_PRE_DATA_SIZE)
+ + sizeof (version)
+ + vlib_buffer_length_in_chain (vm, b)
+ + sizeof (u32) + (name_length + 2) /* +2: count plus NULL byte */
+ + (vec_len (packet_trace) + 2); /* +2: trace count */
+ /* *INDENT-ON* */
+
+ clib_spinlock_lock_if_init (&pm->lock);
+ n_left = clib_min (capture_size, 16384);
+ d = pcap_add_packet (pm, time_now, n_left, capture_size);
+
+ /* Copy the (major, minor) version numbers */
+ clib_memcpy_fast (d, version, sizeof (version));
+ d += sizeof (version);
+
+ /* Copy the buffer index */
+ clib_memcpy_fast (d, &from[i], sizeof (u32));
+ d += 4;
+
+ /* Copy the name TLV */
+ clib_memcpy_fast (d, name_tlv, name_length + 2);
+ d += name_length + 2;
+
+ /* Copy the buffer metadata, but not the rewrite space */
+ clib_memcpy_fast (d, b, sizeof (*b) - VLIB_BUFFER_PRE_DATA_SIZE);
+ d += sizeof (*b) - VLIB_BUFFER_PRE_DATA_SIZE;
+
+ trace_length = vec_len (packet_trace);
+ /* Copy the trace data length (may be zero) */
+ clib_memcpy_fast (d, &trace_length, sizeof (trace_length));
+ d += 2;
+
+ /* Copy packet trace data (if any) */
+ if (vec_len (packet_trace))
+ clib_memcpy_fast (d, packet_trace, vec_len (packet_trace));
+
+ d += vec_len (packet_trace);
+
+ n_left = clib_min
+ (vlib_buffer_length_in_chain (vm, b),
+ 16384 -
+ ((sizeof (*b) - VLIB_BUFFER_PRE_DATA_SIZE) +
+ (trace_length + 2)));
+ /* Copy the packet data */
+ while (1)
+ {
+ u32 copy_length = clib_min ((u32) n_left, b->current_length);
+ clib_memcpy_fast (d, b->data + b->current_data, copy_length);
+ n_left -= b->current_length;
+ if (n_left <= 0)
+ break;
+ d += b->current_length;
+ ASSERT (b->flags & VLIB_BUFFER_NEXT_PRESENT);
+ b = vlib_get_buffer (vm, b->next_buffer);
+ }
+ clib_spinlock_unlock_if_init (&pm->lock);
+ }
+ }
+ vec_free (packet_trace);
+}
+
static_always_inline u64
dispatch_node (vlib_main_t * vm,
vlib_node_runtime_t * node,
vlib_buffer_t *b = vlib_get_buffer (vm, from[i]);
add_trajectory_trace (b, node->node_index);
}
+ if (PREDICT_FALSE (vm->dispatch_pcap_enable))
+ dispatch_pcap_trace (vm, node, frame);
n = node->function (vm, node, frame);
}
else
- n = node->function (vm, node, frame);
+ {
+ if (PREDICT_FALSE (vm->dispatch_pcap_enable))
+ dispatch_pcap_trace (vm, node, frame);
+ n = node->function (vm, node, frame);
+ }
t = clib_cpu_time_now ();
ASSERT (p->flags & (VLIB_PROCESS_IS_SUSPENDED_WAITING_FOR_CLOCK
| VLIB_PROCESS_IS_SUSPENDED_WAITING_FOR_EVENT));
- pf =
- pool_elt_at_index (nm->suspended_process_frames,
- p->suspended_process_frame_index);
+ pf = pool_elt_at_index (nm->suspended_process_frames,
+ p->suspended_process_frame_index);
node_runtime = &p->node_runtime;
node = vlib_get_node (vm, node_runtime->node_index);
else
{
p->flags &= ~VLIB_PROCESS_IS_RUNNING;
+ pool_put_index (nm->suspended_process_frames,
+ p->suspended_process_frame_index);
p->suspended_process_frame_index = ~0;
- pool_put (nm->suspended_process_frames, pf);
}
t = clib_cpu_time_now ();
te->n_data_elts,
te->n_data_elt_bytes);
if (te->n_data_bytes < sizeof (te->inline_event_data))
- clib_memcpy (data, te->inline_event_data,
- te->n_data_bytes);
+ clib_memcpy_fast (data, te->inline_event_data,
+ te->n_data_bytes);
else
{
- clib_memcpy (data, te->event_data_as_vector,
- te->n_data_bytes);
+ clib_memcpy_fast (data, te->event_data_as_vector,
+ te->n_data_bytes);
vec_free (te->event_data_as_vector);
}
pool_put (nm->signal_timed_event_data_pool, te);
return 0;
}
+static inline clib_error_t *
+pcap_dispatch_trace_command_internal (vlib_main_t * vm,
+ unformat_input_t * input,
+ vlib_cli_command_t * cmd, int rx_tx)
+{
+#define PCAP_DEF_PKT_TO_CAPTURE (100)
+
+ unformat_input_t _line_input, *line_input = &_line_input;
+ pcap_main_t *pm = &vm->dispatch_pcap_main;
+ u8 *filename;
+ u8 *chroot_filename = 0;
+ u32 max = 0;
+ int enabled = 0;
+ int errorFlag = 0;
+ clib_error_t *error = 0;
+ u32 node_index, add;
+ vlib_trace_main_t *tm;
+ vlib_trace_node_t *tn;
+
+ /* Get a line of input. */
+ if (!unformat_user (input, unformat_line_input, line_input))
+ return 0;
+
+ while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
+ {
+ if (unformat (line_input, "on"))
+ {
+ if (vm->dispatch_pcap_enable == 0)
+ {
+ enabled = 1;
+ }
+ else
+ {
+ vlib_cli_output (vm, "pcap dispatch capture already on...");
+ errorFlag = 1;
+ break;
+ }
+ }
+ else if (unformat (line_input, "off"))
+ {
+ if (vm->dispatch_pcap_enable)
+ {
+ vlib_cli_output
+ (vm, "captured %d pkts...", pm->n_packets_captured);
+ if (pm->n_packets_captured)
+ {
+ pm->n_packets_to_capture = pm->n_packets_captured;
+ error = pcap_write (pm);
+ if (error)
+ clib_error_report (error);
+ else
+ vlib_cli_output (vm, "saved to %s...", pm->file_name);
+ }
+ vm->dispatch_pcap_enable = 0;
+ }
+ else
+ {
+ vlib_cli_output (vm, "pcap tx capture already off...");
+ errorFlag = 1;
+ break;
+ }
+ }
+ else if (unformat (line_input, "max %d", &max))
+ {
+ if (vm->dispatch_pcap_enable)
+ {
+ vlib_cli_output
+ (vm,
+ "can't change max value while pcap tx capture active...");
+ errorFlag = 1;
+ break;
+ }
+ pm->n_packets_to_capture = max;
+ }
+ else if (unformat (line_input, "file %s", &filename))
+ {
+ if (vm->dispatch_pcap_enable)
+ {
+ vlib_cli_output
+ (vm, "can't change file while pcap tx capture active...");
+ errorFlag = 1;
+ break;
+ }
+
+ /* Brain-police user path input */
+ if (strstr ((char *) filename, "..")
+ || index ((char *) filename, '/'))
+ {
+ vlib_cli_output (vm, "illegal characters in filename '%s'",
+ filename);
+ vlib_cli_output (vm, "Hint: .. and / are not allowed.");
+ vec_free (filename);
+ errorFlag = 1;
+ break;
+ }
+
+ chroot_filename = format (0, "/tmp/%s%c", filename, 0);
+ vec_free (filename);
+ }
+ else if (unformat (line_input, "status"))
+ {
+ if (vm->dispatch_pcap_enable)
+ {
+ vlib_cli_output
+ (vm, "pcap dispatch capture is on: %d of %d pkts...",
+ pm->n_packets_captured, pm->n_packets_to_capture);
+ vlib_cli_output (vm, "Capture to file %s", pm->file_name);
+ }
+ else
+ {
+ vlib_cli_output (vm, "pcap dispatch capture is off...");
+ }
+ break;
+ }
+ else if (unformat (line_input, "buffer-trace %U %d",
+ unformat_vlib_node, vm, &node_index, &add))
+ {
+ if (vnet_trace_dummy == 0)
+ vec_validate_aligned (vnet_trace_dummy, 2048,
+ CLIB_CACHE_LINE_BYTES);
+ vlib_cli_output (vm, "Buffer tracing of %d pkts from %U enabled...",
+ add, format_vlib_node_name, vm, node_index);
+
+ /* *INDENT-OFF* */
+ foreach_vlib_main ((
+ {
+ tm = &this_vlib_main->trace_main;
+ tm->verbose = 0; /* not sure this ever did anything... */
+ vec_validate (tm->nodes, node_index);
+ tn = tm->nodes + node_index;
+ tn->limit += add;
+ tm->trace_enable = 1;
+ }));
+ /* *INDENT-ON* */
+ }
+
+ else
+ {
+ error = clib_error_return (0, "unknown input `%U'",
+ format_unformat_error, line_input);
+ errorFlag = 1;
+ break;
+ }
+ }
+ unformat_free (line_input);
+
+
+ if (errorFlag == 0)
+ {
+ /* Since no error, save configured values. */
+ if (chroot_filename)
+ {
+ if (pm->file_name)
+ vec_free (pm->file_name);
+ vec_add1 (chroot_filename, 0);
+ pm->file_name = (char *) chroot_filename;
+ }
+
+ if (max)
+ pm->n_packets_to_capture = max;
+
+ if (enabled)
+ {
+ if (pm->file_name == 0)
+ pm->file_name = (char *) format (0, "/tmp/dispatch.pcap%c", 0);
+
+ pm->n_packets_captured = 0;
+ pm->packet_type = PCAP_PACKET_TYPE_user13;
+ if (pm->lock == 0)
+ clib_spinlock_init (&(pm->lock));
+ vm->dispatch_pcap_enable = 1;
+ vlib_cli_output (vm, "pcap dispatch capture on...");
+ }
+ }
+ else if (chroot_filename)
+ vec_free (chroot_filename);
+
+ return error;
+}
+
+static clib_error_t *
+pcap_dispatch_trace_command_fn (vlib_main_t * vm,
+ unformat_input_t * input,
+ vlib_cli_command_t * cmd)
+{
+ return pcap_dispatch_trace_command_internal (vm, input, cmd, VLIB_RX);
+}
+
+/*?
+ * This command is used to start or stop pcap dispatch trace capture, or show
+ * the capture status.
+ *
+ * This command has the following optional parameters:
+ *
+ * - <b>on|off</b> - Used to start or stop capture.
+ *
+ * - <b>max <nn></b> - Depth of local buffer. Once '<em>nn</em>' number
+ * of packets have been received, buffer is flushed to file. Once another
+ * '<em>nn</em>' number of packets have been received, buffer is flushed
+ * to file, overwriting previous write. If not entered, value defaults
+ * to 100. Can only be updated if packet capture is off.
+ *
+ * - <b>file <name></b> - Used to specify the output filename. The file will
+ * be placed in the '<em>/tmp</em>' directory, so only the filename is
+ * supported. Directory should not be entered. If file already exists, file
+ * will be overwritten. If no filename is provided, '<em>/tmp/vpe.pcap</em>'
+ * will be used. Can only be updated if packet capture is off.
+ *
+ * - <b>status</b> - Displays the current status and configured attributes
+ * associated with a packet capture. If packet capture is in progress,
+ * '<em>status</em>' also will return the number of packets currently in
+ * the local buffer. All additional attributes entered on command line
+ * with '<em>status</em>' will be ignored and not applied.
+ *
+ * @cliexpar
+ * Example of how to display the status of capture when off:
+ * @cliexstart{pcap dispatch trace status}
+ * max is 100, for any interface to file /tmp/vpe.pcap
+ * pcap dispatch capture is off...
+ * @cliexend
+ * Example of how to start a dispatch trace capture:
+ * @cliexstart{pcap dispatch trace on max 35 file dispatchTrace.pcap}
+ * pcap dispatch capture on...
+ * @cliexend
+ * Example of how to start a dispatch trace capture with buffer tracing
+ * @cliexstart{pcap dispatch trace on max 10000 file dispatchTrace.pcap buffer-trace dpdk-input 1000}
+ * pcap dispatch capture on...
+ * @cliexend
+ * Example of how to display the status of a tx packet capture in progress:
+ * @cliexstart{pcap tx trace status}
+ * max is 35, dispatch trace to file /tmp/vppTest.pcap
+ * pcap tx capture is on: 20 of 35 pkts...
+ * @cliexend
+ * Example of how to stop a tx packet capture:
+ * @cliexstart{vppctl pcap dispatch trace off}
+ * captured 21 pkts...
+ * saved to /tmp/dispatchTrace.pcap...
+ * @cliexend
+?*/
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (pcap_dispatch_trace_command, static) = {
+ .path = "pcap dispatch trace",
+ .short_help =
+ "pcap dispatch trace [on|off] [max <nn>] [file <name>] [status]\n"
+ " [buffer-trace <input-node-name> <nn>]",
+ .function = pcap_dispatch_trace_command_fn,
+};
+/* *INDENT-ON* */
+
/*
* fd.io coding-style-patch-verification: ON
*
Code Review / vpp.git / blobdiff