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-rw-r--r--src/vnet/pg/cli.c636
1 files changed, 636 insertions, 0 deletions
diff --git a/src/vnet/pg/cli.c b/src/vnet/pg/cli.c
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+++ b/src/vnet/pg/cli.c
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+/*
+ * Copyright (c) 2015 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+/*
+ * pg_cli.c: packet generator cli
+ *
+ * Copyright (c) 2008 Eliot Dresselhaus
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include <sys/stat.h>
+
+#include <vnet/vnet.h>
+#include <vnet/pg/pg.h>
+
+#ifdef CLIB_UNIX
+#include <vnet/unix/pcap.h>
+#endif
+
+/* Root of all packet generator cli commands. */
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (vlib_cli_pg_command, static) = {
+ .path = "packet-generator",
+ .short_help = "Packet generator commands",
+};
+/* *INDENT-ON* */
+
+void
+pg_enable_disable (u32 stream_index, int is_enable)
+{
+ pg_main_t *pg = &pg_main;
+ pg_stream_t *s;
+
+ if (stream_index == ~0)
+ {
+ /* No stream specified: enable/disable all streams. */
+ /* *INDENT-OFF* */
+ pool_foreach (s, pg->streams, ({
+ pg_stream_enable_disable (pg, s, is_enable);
+ }));
+ /* *INDENT-ON* */
+ }
+ else
+ {
+ /* enable/disable specified stream. */
+ s = pool_elt_at_index (pg->streams, stream_index);
+ pg_stream_enable_disable (pg, s, is_enable);
+ }
+}
+
+clib_error_t *
+pg_capture (pg_capture_args_t * a)
+{
+ pg_main_t *pg = &pg_main;
+ pg_interface_t *pi;
+
+ if (a->is_enabled == 1)
+ {
+ struct stat sb;
+ if (stat ((char *) a->pcap_file_name, &sb) != -1)
+ return clib_error_return (0, "Cannot create pcap file");
+ }
+
+ pi = pool_elt_at_index (pg->interfaces, a->dev_instance);
+ vec_free (pi->pcap_file_name);
+ memset (&pi->pcap_main, 0, sizeof (pi->pcap_main));
+
+ if (a->is_enabled == 0)
+ return 0;
+
+ pi->pcap_file_name = a->pcap_file_name;
+ pi->pcap_main.file_name = (char *) pi->pcap_file_name;
+ pi->pcap_main.n_packets_to_capture = a->count;
+ pi->pcap_main.packet_type = PCAP_PACKET_TYPE_ethernet;
+
+ return 0;
+}
+
+static clib_error_t *
+enable_disable_stream (vlib_main_t * vm,
+ unformat_input_t * input, vlib_cli_command_t * cmd)
+{
+ pg_main_t *pg = &pg_main;
+ int is_enable = cmd->function_arg != 0;
+ u32 stream_index = ~0;
+
+ if (unformat (input, "%U", unformat_eof))
+ ;
+ else if (unformat (input, "%U", unformat_hash_vec_string,
+ pg->stream_index_by_name, &stream_index))
+ ;
+ else
+ return clib_error_create ("unknown input `%U'",
+ format_unformat_error, input);
+
+ pg_enable_disable (stream_index, is_enable);
+
+ return 0;
+}
+
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (enable_streams_cli, static) = {
+ .path = "packet-generator enable-stream",
+ .short_help = "Enable packet generator streams",
+ .function = enable_disable_stream,
+ .function_arg = 1, /* is_enable */
+};
+/* *INDENT-ON* */
+
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (disable_streams_cli, static) = {
+ .path = "packet-generator disable-stream",
+ .short_help = "Disable packet generator streams",
+ .function = enable_disable_stream,
+ .function_arg = 0, /* is_enable */
+};
+/* *INDENT-ON* */
+
+static u8 *
+format_pg_stream (u8 * s, va_list * va)
+{
+ pg_stream_t *t = va_arg (*va, pg_stream_t *);
+ u8 *v;
+
+ if (!t)
+ return format (s, "%=16s%=12s%=16s%s",
+ "Name", "Enabled", "Count", "Parameters");
+
+ s = format (s, "%-16v%=12s%16Ld",
+ t->name,
+ pg_stream_is_enabled (t) ? "Yes" : "No",
+ t->n_packets_generated);
+
+ v = 0;
+
+ v = format (v, "limit %Ld, ", t->n_packets_limit);
+
+ v = format (v, "rate %.2e pps, ", t->rate_packets_per_second);
+
+ v = format (v, "size %d%c%d, ",
+ t->min_packet_bytes,
+ t->packet_size_edit_type == PG_EDIT_RANDOM ? '+' : '-',
+ t->max_packet_bytes);
+
+ v = format (v, "buffer-size %d, ", t->buffer_bytes);
+
+ v = format (v, "worker %d, ", t->worker_index);
+
+ if (v)
+ {
+ s = format (s, " %v", v);
+ vec_free (v);
+ }
+
+ return s;
+}
+
+static clib_error_t *
+show_streams (vlib_main_t * vm,
+ unformat_input_t * input, vlib_cli_command_t * cmd)
+{
+ pg_main_t *pg = &pg_main;
+ pg_stream_t *s;
+
+ if (pool_elts (pg->streams) == 0)
+ {
+ vlib_cli_output (vm, "no streams currently defined");
+ goto done;
+ }
+
+ vlib_cli_output (vm, "%U", format_pg_stream, 0);
+ /* *INDENT-OFF* */
+ pool_foreach (s, pg->streams, ({
+ vlib_cli_output (vm, "%U", format_pg_stream, s);
+ }));
+ /* *INDENT-ON* */
+
+done:
+ return 0;
+}
+
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (show_streams_cli, static) = {
+ .path = "show packet-generator",
+ .short_help = "Show packet generator streams",
+ .function = show_streams,
+};
+/* *INDENT-ON* */
+
+static clib_error_t *
+pg_pcap_read (pg_stream_t * s, char *file_name)
+{
+#ifndef CLIB_UNIX
+ return clib_error_return (0, "no pcap support");
+#else
+ pcap_main_t pm;
+ clib_error_t *error;
+ memset (&pm, 0, sizeof (pm));
+ pm.file_name = file_name;
+ error = pcap_read (&pm);
+ s->replay_packet_templates = pm.packets_read;
+ s->min_packet_bytes = pm.min_packet_bytes;
+ s->max_packet_bytes = pm.max_packet_bytes;
+ s->buffer_bytes = pm.max_packet_bytes;
+ /* For PCAP buffers we never re-use buffers. */
+ s->flags |= PG_STREAM_FLAGS_DISABLE_BUFFER_RECYCLE;
+
+ if (s->n_packets_limit == 0)
+ s->n_packets_limit = vec_len (pm.packets_read);
+
+ return error;
+#endif /* CLIB_UNIX */
+}
+
+static uword
+unformat_pg_stream_parameter (unformat_input_t * input, va_list * args)
+{
+ pg_stream_t *s = va_arg (*args, pg_stream_t *);
+ f64 x;
+
+ if (unformat (input, "limit %f", &x))
+ s->n_packets_limit = x;
+
+ else if (unformat (input, "rate %f", &x))
+ s->rate_packets_per_second = x;
+
+ else if (unformat (input, "size %d-%d", &s->min_packet_bytes,
+ &s->max_packet_bytes))
+ s->packet_size_edit_type = PG_EDIT_INCREMENT;
+
+ else if (unformat (input, "size %d+%d", &s->min_packet_bytes,
+ &s->max_packet_bytes))
+ s->packet_size_edit_type = PG_EDIT_RANDOM;
+
+ else if (unformat (input, "buffer-size %d", &s->buffer_bytes))
+ ;
+
+ else
+ return 0;
+
+ return 1;
+}
+
+static clib_error_t *
+validate_stream (pg_stream_t * s)
+{
+ if (s->max_packet_bytes < s->min_packet_bytes)
+ return clib_error_create ("max-size < min-size");
+
+ if (s->buffer_bytes >= 4096 || s->buffer_bytes == 0)
+ return
+ clib_error_create ("buffer-size must be positive and < 4096, given %d",
+ s->buffer_bytes);
+
+ if (s->rate_packets_per_second < 0)
+ return clib_error_create ("negative rate");
+
+ return 0;
+}
+
+static clib_error_t *
+new_stream (vlib_main_t * vm,
+ unformat_input_t * input, vlib_cli_command_t * cmd)
+{
+ clib_error_t *error = 0;
+ u8 *tmp = 0;
+ u32 hw_if_index;
+ unformat_input_t sub_input = { 0 };
+ int sub_input_given = 0;
+ vnet_main_t *vnm = vnet_get_main ();
+ pg_main_t *pg = &pg_main;
+ pg_stream_t s = { 0 };
+ char *pcap_file_name;
+
+ s.sw_if_index[VLIB_RX] = s.sw_if_index[VLIB_TX] = ~0;
+ s.node_index = ~0;
+ s.max_packet_bytes = s.min_packet_bytes = 64;
+ s.buffer_bytes = VLIB_BUFFER_DEFAULT_FREE_LIST_BYTES;
+ s.if_id = 0;
+ pcap_file_name = 0;
+ while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
+ {
+ if (unformat (input, "name %v", &tmp))
+ {
+ if (s.name)
+ vec_free (s.name);
+ s.name = tmp;
+ }
+
+ else if (unformat (input, "node %U",
+ unformat_vnet_hw_interface, vnm, &hw_if_index))
+ {
+ vnet_hw_interface_t *hi = vnet_get_hw_interface (vnm, hw_if_index);
+
+ s.node_index = hi->output_node_index;
+ s.sw_if_index[VLIB_TX] = hi->sw_if_index;
+ }
+
+ else if (unformat (input, "source pg%u", &s.if_id))
+ ;
+
+ else if (unformat (input, "node %U",
+ unformat_vlib_node, vm, &s.node_index))
+ ;
+
+ else if (unformat (input, "worker %u", &s.worker_index))
+ ;
+
+ else if (unformat (input, "interface %U",
+ unformat_vnet_sw_interface, vnm,
+ &s.sw_if_index[VLIB_RX]))
+ ;
+
+ else if (unformat (input, "pcap %s", &pcap_file_name))
+ ;
+
+ else if (!sub_input_given
+ && unformat (input, "data %U", unformat_input, &sub_input))
+ sub_input_given++;
+
+ else if (unformat_user (input, unformat_pg_stream_parameter, &s))
+ ;
+
+ else if (unformat (input, "no-recycle"))
+ s.flags |= PG_STREAM_FLAGS_DISABLE_BUFFER_RECYCLE;
+
+ else
+ {
+ error = clib_error_create ("unknown input `%U'",
+ format_unformat_error, input);
+ goto done;
+ }
+ }
+
+ error = validate_stream (&s);
+ if (error)
+ return error;
+
+ if (!sub_input_given && !pcap_file_name)
+ {
+ error = clib_error_create ("no packet data given");
+ goto done;
+ }
+
+ if (s.node_index == ~0)
+ {
+ if (pcap_file_name != 0)
+ {
+ vlib_node_t *n =
+ vlib_get_node_by_name (vm, (u8 *) "ethernet-input");
+ s.node_index = n->index;
+ }
+ else
+ {
+ error = clib_error_create ("output interface or node not given");
+ goto done;
+ }
+ }
+
+ {
+ pg_node_t *n;
+
+ if (s.node_index < vec_len (pg->nodes))
+ n = pg->nodes + s.node_index;
+ else
+ n = 0;
+
+ if (s.worker_index >= vlib_num_workers ())
+ s.worker_index = 0;
+
+ if (pcap_file_name != 0)
+ {
+ error = pg_pcap_read (&s, pcap_file_name);
+ if (error)
+ goto done;
+ vec_free (pcap_file_name);
+ }
+
+ else if (n && n->unformat_edit
+ && unformat_user (&sub_input, n->unformat_edit, &s))
+ ;
+
+ else if (!unformat_user (&sub_input, unformat_pg_payload, &s))
+ {
+ error = clib_error_create
+ ("failed to parse packet data from `%U'",
+ format_unformat_error, &sub_input);
+ goto done;
+ }
+ }
+
+ pg_stream_add (pg, &s);
+ return 0;
+
+done:
+ pg_stream_free (&s);
+ unformat_free (&sub_input);
+ return error;
+}
+
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (new_stream_cli, static) = {
+ .path = "packet-generator new",
+ .function = new_stream,
+ .short_help = "Create packet generator stream",
+ .long_help =
+ "Create packet generator stream\n"
+ "\n"
+ "Arguments:\n"
+ "\n"
+ "name STRING sets stream name\n"
+ "interface STRING interface for stream output \n"
+ "node NODE-NAME node for stream output\n"
+ "data STRING specifies packet data\n"
+ "pcap FILENAME read packet data from pcap file\n",
+};
+/* *INDENT-ON* */
+
+static clib_error_t *
+del_stream (vlib_main_t * vm,
+ unformat_input_t * input, vlib_cli_command_t * cmd)
+{
+ pg_main_t *pg = &pg_main;
+ u32 i;
+
+ if (!unformat (input, "%U",
+ &unformat_hash_vec_string, pg->stream_index_by_name, &i))
+ return clib_error_create ("expected stream name `%U'",
+ format_unformat_error, input);
+
+ pg_stream_del (pg, i);
+ return 0;
+}
+
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (del_stream_cli, static) = {
+ .path = "packet-generator delete",
+ .function = del_stream,
+ .short_help = "Delete stream with given name",
+};
+/* *INDENT-ON* */
+
+static clib_error_t *
+change_stream_parameters (vlib_main_t * vm,
+ unformat_input_t * input, vlib_cli_command_t * cmd)
+{
+ pg_main_t *pg = &pg_main;
+ pg_stream_t *s, s_new;
+ u32 stream_index = ~0;
+ clib_error_t *error;
+
+ if (unformat (input, "%U", unformat_hash_vec_string,
+ pg->stream_index_by_name, &stream_index))
+ ;
+ else
+ return clib_error_create ("expecting stream name; got `%U'",
+ format_unformat_error, input);
+
+ s = pool_elt_at_index (pg->streams, stream_index);
+ s_new = s[0];
+
+ while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
+ {
+ if (unformat_user (input, unformat_pg_stream_parameter, &s_new))
+ ;
+
+ else
+ return clib_error_create ("unknown input `%U'",
+ format_unformat_error, input);
+ }
+
+ error = validate_stream (&s_new);
+ if (!error)
+ s[0] = s_new;
+
+ return error;
+}
+
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (change_stream_parameters_cli, static) = {
+ .path = "packet-generator configure",
+ .short_help = "Change packet generator stream parameters",
+ .function = change_stream_parameters,
+};
+/* *INDENT-ON* */
+
+static clib_error_t *
+pg_capture_cmd_fn (vlib_main_t * vm,
+ unformat_input_t * input, vlib_cli_command_t * cmd)
+{
+ clib_error_t *error = 0;
+ vnet_main_t *vnm = vnet_get_main ();
+ unformat_input_t _line_input, *line_input = &_line_input;
+ vnet_hw_interface_t *hi = 0;
+ u8 *pcap_file_name = 0;
+ u32 hw_if_index;
+ u32 is_disable = 0;
+ u32 count = ~0;
+
+ 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, "%U",
+ unformat_vnet_hw_interface, vnm, &hw_if_index))
+ {
+ hi = vnet_get_hw_interface (vnm, hw_if_index);
+ }
+
+ else if (unformat (line_input, "pcap %s", &pcap_file_name))
+ ;
+ else if (unformat (line_input, "count %u", &count))
+ ;
+ else if (unformat (line_input, "disable"))
+ is_disable = 1;
+
+ else
+ {
+ error = clib_error_create ("unknown input `%U'",
+ format_unformat_error, input);
+ return error;
+ }
+ }
+
+ if (!hi)
+ return clib_error_return (0, "Please specify interface name");
+
+ if (hi->dev_class_index != pg_dev_class.index)
+ return clib_error_return (0, "Please specify packet-generator interface");
+
+ if (!pcap_file_name && is_disable == 0)
+ return clib_error_return (0, "Please specify pcap file name");
+
+ unformat_free (line_input);
+
+ pg_capture_args_t _a, *a = &_a;
+
+ a->hw_if_index = hw_if_index;
+ a->dev_instance = hi->dev_instance;
+ a->is_enabled = !is_disable;
+ a->pcap_file_name = pcap_file_name;
+ a->count = count;
+
+ error = pg_capture (a);
+ return error;
+}
+
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (pg_capture_cmd, static) = {
+ .path = "packet-generator capture",
+ .short_help = "packet-generator capture <interface name> pcap <filename> [count <n>]",
+ .function = pg_capture_cmd_fn,
+};
+/* *INDENT-ON* */
+
+static clib_error_t *
+create_pg_if_cmd_fn (vlib_main_t * vm,
+ unformat_input_t * input, vlib_cli_command_t * cmd)
+{
+ pg_main_t *pg = &pg_main;
+ unformat_input_t _line_input, *line_input = &_line_input;
+ u32 if_id;
+
+ 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, "interface pg%u", &if_id))
+ ;
+
+ else
+ return clib_error_create ("unknown input `%U'",
+ format_unformat_error, input);
+ }
+
+ unformat_free (line_input);
+
+ pg_interface_add_or_get (pg, if_id);
+ return 0;
+}
+
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (create_pg_if_cmd, static) = {
+ .path = "create packet-generator",
+ .short_help = "create packet-generator interface <interface name>",
+ .function = create_pg_if_cmd_fn,
+};
+/* *INDENT-ON* */
+
+/* Dummy init function so that we can be linked in. */
+static clib_error_t *
+pg_cli_init (vlib_main_t * vm)
+{
+ return 0;
+}
+
+VLIB_INIT_FUNCTION (pg_cli_init);
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */