+
+int
+set_hw_interface_tx_queue (u32 hw_if_index, u32 queue_id, uword *bitmap)
+{
+ vnet_main_t *vnm = vnet_get_main ();
+ vlib_thread_main_t *vtm = vlib_get_thread_main ();
+ vnet_hw_if_tx_queue_t *txq;
+ u32 queue_index;
+ u32 thread_index;
+
+ /* highest set bit in bitmap should not exceed last worker thread index */
+ thread_index = clib_bitmap_last_set (bitmap);
+ if ((thread_index != ~0) && (thread_index >= vtm->n_vlib_mains))
+ return VNET_API_ERROR_INVALID_VALUE;
+
+ queue_index =
+ vnet_hw_if_get_tx_queue_index_by_id (vnm, hw_if_index, queue_id);
+ if (queue_index == ~0)
+ return VNET_API_ERROR_INVALID_QUEUE;
+
+ txq = vnet_hw_if_get_tx_queue (vnm, queue_index);
+
+ // free the existing bitmap
+ if (clib_bitmap_count_set_bits (txq->threads))
+ {
+ txq->shared_queue = 0;
+ clib_bitmap_free (txq->threads);
+ }
+
+ clib_bitmap_foreach (thread_index, bitmap)
+ vnet_hw_if_tx_queue_assign_thread (vnm, queue_index, thread_index);
+
+ vnet_hw_if_update_runtime_data (vnm, hw_if_index);
+ return 0;
+}
+
+static clib_error_t *
+set_interface_tx_queue (vlib_main_t *vm, unformat_input_t *input,
+ vlib_cli_command_t *cmd)
+{
+ clib_error_t *error = 0;
+ unformat_input_t _line_input, *line_input = &_line_input;
+ vnet_main_t *vnm = vnet_get_main ();
+ u32 hw_if_index = (u32) ~0;
+ u32 queue_id = (u32) 0;
+ uword *bitmap = 0;
+ int rv = 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))
+ ;
+ else if (unformat (line_input, "queue %d", &queue_id))
+ ;
+ else if (unformat (line_input, "threads %U", unformat_bitmap_list,
+ &bitmap))
+ ;
+ else
+ {
+ error = clib_error_return (0, "parse error: '%U'",
+ format_unformat_error, line_input);
+ unformat_free (line_input);
+ return error;
+ }
+ }
+
+ unformat_free (line_input);
+
+ if (hw_if_index == (u32) ~0)
+ {
+ error = clib_error_return (0, "please specify valid interface name");
+ goto error;
+ }
+
+ rv = set_hw_interface_tx_queue (hw_if_index, queue_id, bitmap);
+
+ switch (rv)
+ {
+ case VNET_API_ERROR_INVALID_VALUE:
+ error = clib_error_return (
+ 0, "please specify valid thread(s) - last thread index %u",
+ clib_bitmap_last_set (bitmap));
+ break;
+ case VNET_API_ERROR_INVALID_QUEUE:
+ error = clib_error_return (
+ 0, "unknown queue %u on interface %s", queue_id,
+ vnet_get_hw_interface (vnet_get_main (), hw_if_index)->name);
+ break;
+ default:
+ break;
+ }
+
+error:
+ clib_bitmap_free (bitmap);
+ return (error);
+}
+
+VLIB_CLI_COMMAND (cmd_set_if_tx_queue, static) = {
+ .path = "set interface tx-queue",
+ .short_help = "set interface tx-queue <interface> queue <n> "
+ "[threads <list>]",
+ .function = set_interface_tx_queue,
+ .is_mp_safe = 1,
+};
+
+clib_error_t *
+set_interface_rss_queues (vlib_main_t * vm, u32 hw_if_index,
+ clib_bitmap_t * bitmap)
+{
+ vnet_main_t *vnm = vnet_get_main ();
+ vnet_hw_interface_t *hi = vnet_get_hw_interface (vnm, hw_if_index);
+
+ return vnet_hw_interface_set_rss_queues (vnm, hi, bitmap);
+}
+
+static clib_error_t *
+set_interface_rss_queues_fn (vlib_main_t * vm,
+ unformat_input_t * input,
+ vlib_cli_command_t * cmd)
+{
+ clib_error_t *error = 0;
+ unformat_input_t _line_input, *line_input = &_line_input;
+ vnet_main_t *vnm = vnet_get_main ();
+ u32 hw_if_index = (u32) ~ 0;
+ clib_bitmap_t *bitmap = NULL;
+
+ 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))
+ ;
+ else
+ if (unformat (line_input, "list %U", unformat_bitmap_list, &bitmap))
+ ;
+ else
+ {
+ error = clib_error_return (0, "parse error: '%U'",
+ format_unformat_error, line_input);
+ unformat_free (line_input);
+ goto done;
+ }
+ }
+
+ unformat_free (line_input);
+
+ if (hw_if_index == (u32) ~ 0)
+ {
+ error = clib_error_return (0, "please specify valid interface name");
+ goto done;
+ }
+
+ if (bitmap == NULL)
+ {
+ error = clib_error_return (0, "please specify the valid rss queues");
+ goto done;
+ }
+
+ error = set_interface_rss_queues (vm, hw_if_index, bitmap);
+
+done:
+ if (bitmap)
+ clib_bitmap_free (bitmap);
+
+ return (error);
+}
+
+/*?
+ * This command is used to set the rss queues of a given interface
+ * Not all the interfaces support this operation.
+ * To display the current rss queues, use the command
+ * '<em>show hardware-interfaces</em>'.
+ *
+ * @cliexpar
+ * Example of how to set the rss queues to 0,2-5,7 of an interface:
+ * @cliexstart{set interface rss queues VirtualFunctionEthernet18/1/0 list 0,2-5,7}
+ * @cliexend
+?*/
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (cmd_set_interface_rss_queues,static) = {
+ .path = "set interface rss queues",
+ .short_help = "set interface rss queues <interface> <list <queue-list>>",
+ .function = set_interface_rss_queues_fn,
+};
+/* *INDENT-ON* */
+
+static u8 *
+format_vnet_pcap (u8 * s, va_list * args)
+{
+ vnet_pcap_t *pp = va_arg (*args, vnet_pcap_t *);
+ int type = va_arg (*args, int);
+ int printed = 0;
+
+ if (type == 0)
+ {
+ if (pp->pcap_rx_enable)
+ {
+ s = format (s, "rx");
+ printed = 1;
+ }
+ if (pp->pcap_tx_enable)
+ {
+ if (printed)
+ s = format (s, " and ");
+ s = format (s, "tx");
+ printed = 1;
+ }
+ if (pp->pcap_drop_enable)
+ {
+ if (printed)
+ s = format (s, " and ");
+ s = format (s, "drop");
+ printed = 1;
+ }
+ return s;
+ }
+ s = format (s, "unknown type %d!", type);
+ return s;
+}
+
+
+int
+vnet_pcap_dispatch_trace_configure (vnet_pcap_dispatch_trace_args_t * a)
+{
+ vlib_main_t *vm = vlib_get_main ();
+ vnet_main_t *vnm = vnet_get_main ();
+ vnet_pcap_t *pp = &vnm->pcap;
+ pcap_main_t *pm = &pp->pcap_main;
+ vnet_classify_main_t *cm = &vnet_classify_main;
+
+ if (a->status)
+ {
+ if (pp->pcap_rx_enable || pp->pcap_tx_enable || pp->pcap_drop_enable)
+ {
+ vlib_cli_output
+ (vm, "pcap %U dispatch capture enabled: %d of %d pkts...",
+ format_vnet_pcap, pp, 0 /* print type */ ,
+ 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 disabled");
+
+ return 0;
+ }
+
+ /* Consistency checks */
+
+ /* Enable w/ capture already enabled not allowed */
+ if ((pp->pcap_rx_enable + pp->pcap_tx_enable + pp->pcap_drop_enable)
+ && (a->rx_enable + a->tx_enable + a->drop_enable))
+ return VNET_API_ERROR_INVALID_VALUE;
+
+ /* Disable capture with capture already disabled, not interesting */
+ if (((pp->pcap_rx_enable + pp->pcap_tx_enable + pp->pcap_drop_enable) ==
+ 0) &&
+ ((a->rx_enable + a->tx_enable + a->drop_enable == 0)))
+ return VNET_API_ERROR_VALUE_EXIST;
+
+ /* Change number of packets to capture while capturing */
+ if ((pp->pcap_rx_enable + pp->pcap_tx_enable + pp->pcap_drop_enable)
+ && (a->rx_enable + a->tx_enable + a->drop_enable)
+ && (pm->n_packets_to_capture != a->packets_to_capture))
+ return VNET_API_ERROR_INVALID_VALUE_2;
+
+ /* Classify filter specified, but no classify filter configured */
+ if ((a->rx_enable + a->tx_enable + a->drop_enable) && a->filter &&
+ (!cm->classify_table_index_by_sw_if_index ||
+ cm->classify_table_index_by_sw_if_index[0] == ~0))
+ return VNET_API_ERROR_NO_SUCH_LABEL;
+
+ if (a->rx_enable + a->tx_enable + a->drop_enable)
+ {
+ void *save_pcap_data;
+
+ /* Sanity check max bytes per pkt */
+ if (a->max_bytes_per_pkt < 32 || a->max_bytes_per_pkt > 9000)
+ return VNET_API_ERROR_INVALID_MEMORY_SIZE;
+
+ /* Clean up from previous run, if any */
+ vec_reset_length (pm->pcap_data);
+
+ /* Throw away the data buffer? */
+ if (a->free_data)
+ vec_free (pm->pcap_data);
+
+ save_pcap_data = pm->pcap_data;
+
+ memset (pm, 0, sizeof (*pm));
+
+ pm->pcap_data = save_pcap_data;
+
+ vec_validate_aligned (vnet_trace_placeholder, 2048,
+ CLIB_CACHE_LINE_BYTES);
+ if (pm->lock == 0)
+ clib_spinlock_init (&(pm->lock));
+
+ if (a->filename == 0)
+ {
+ u8 *stem = 0;
+
+ if (a->rx_enable)
+ stem = format (stem, "rx");
+ if (a->tx_enable)
+ stem = format (stem, "tx");
+ if (a->drop_enable)
+ stem = format (stem, "drop");
+ a->filename = format (0, "/tmp/%v.pcap%c", stem, 0);
+ vec_free (stem);
+ }
+
+ pm->file_name = (char *) a->filename;
+ pm->n_packets_captured = 0;
+ pm->packet_type = PCAP_PACKET_TYPE_ethernet;
+ /* Preallocate the data vector? */
+ if (a->preallocate_data)
+ {
+ vec_validate
+ (pm->pcap_data, a->packets_to_capture
+ * ((sizeof (pcap_packet_header_t) + a->max_bytes_per_pkt)));
+ vec_reset_length (pm->pcap_data);
+ }
+ pm->n_packets_to_capture = a->packets_to_capture;
+ pp->pcap_sw_if_index = a->sw_if_index;
+ if (a->filter)
+ pp->filter_classify_table_index =
+ cm->classify_table_index_by_sw_if_index[0];
+ else
+ pp->filter_classify_table_index = ~0;
+ pp->pcap_error_index = a->drop_err;
+ pp->pcap_rx_enable = a->rx_enable;
+ pp->pcap_tx_enable = a->tx_enable;
+ pp->pcap_drop_enable = a->drop_enable;
+ pp->max_bytes_per_pkt = a->max_bytes_per_pkt;
+ }
+ else
+ {
+ pp->pcap_rx_enable = 0;
+ pp->pcap_tx_enable = 0;
+ pp->pcap_drop_enable = 0;
+ pp->filter_classify_table_index = ~0;
+ pp->pcap_error_index = ~0;
+ if (pm->n_packets_captured)
+ {
+ clib_error_t *error;
+ pm->n_packets_to_capture = pm->n_packets_captured;
+ vlib_cli_output (vm, "Write %d packets to %s, and stop capture...",
+ pm->n_packets_captured, pm->file_name);
+ error = pcap_write (pm);
+ if (pm->flags & PCAP_MAIN_INIT_DONE)
+ pcap_close (pm);
+ /* Report I/O errors... */
+ if (error)
+ {
+ clib_error_report (error);
+ return VNET_API_ERROR_SYSCALL_ERROR_1;
+ }
+ vec_free (pm->file_name);
+ if (a->free_data)
+ vec_free (pm->pcap_data);
+ return 0;
+ }
+ else
+ return VNET_API_ERROR_NO_SUCH_ENTRY;
+ }
+
+ return 0;
+}
+
+static clib_error_t *
+pcap_trace_command_fn (vlib_main_t * vm,
+ unformat_input_t * input, vlib_cli_command_t * cmd)
+{
+ unformat_input_t _line_input, *line_input = &_line_input;
+ vnet_pcap_dispatch_trace_args_t _a, *a = &_a;
+ vnet_main_t *vnm = vnet_get_main ();
+ u8 *filename = 0;
+ u32 max = 1000;
+ u32 max_bytes_per_pkt = 512;
+ int rv;
+ int rx_enable = 0;
+ int tx_enable = 0;
+ int preallocate_data = 0;
+ int drop_enable = 0;
+ int status = 0;
+ int filter = 0;
+ int free_data = 0;
+ u32 sw_if_index = 0; /* default: any interface */
+ vlib_error_t drop_err = ~0; /* default: any error */
+
+ /* 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, "rx"))
+ rx_enable = 1;
+ else if (unformat (line_input, "tx"))
+ tx_enable = 1;
+ else if (unformat (line_input, "drop"))
+ drop_enable = 1;
+ else if (unformat (line_input, "off"))
+ rx_enable = tx_enable = drop_enable = 0;
+ else if (unformat (line_input, "max-bytes-per-pkt %u",
+ &max_bytes_per_pkt))
+ ;
+ else if (unformat (line_input, "max %d", &max))
+ ;
+ else if (unformat (line_input, "packets-to-capture %d", &max))
+ ;
+ else if (unformat (line_input, "file %U", unformat_vlib_tmpfile,
+ &filename))
+ ;
+ else if (unformat (line_input, "status %=", &status, 1))
+ ;
+ else if (unformat (line_input, "intfc %U",
+ unformat_vnet_sw_interface, vnm, &sw_if_index))
+ ;
+ else if (unformat (line_input, "interface %U",
+ unformat_vnet_sw_interface, vnm, &sw_if_index))
+ ;
+ else if (unformat (line_input, "error %U", unformat_vlib_error, vm,
+ &drop_err))
+ ;
+ else if (unformat (line_input, "preallocate-data %=",
+ &preallocate_data, 1))
+ ;
+ else if (unformat (line_input, "free-data %=", &free_data, 1))
+ ;
+ else if (unformat (line_input, "intfc any")
+ || unformat (line_input, "interface any"))
+ sw_if_index = 0;
+ else if (unformat (line_input, "filter"))
+ filter = 1;
+ else
+ {
+ return clib_error_return (0, "unknown input `%U'",
+ format_unformat_error, line_input);
+ }
+ }
+
+ unformat_free (line_input);
+
+ /* no need for memset (a, 0, sizeof (*a)), set all fields here. */
+ a->filename = filename;
+ a->rx_enable = rx_enable;
+ a->tx_enable = tx_enable;
+ a->preallocate_data = preallocate_data;
+ a->free_data = free_data;
+ a->drop_enable = drop_enable;
+ a->status = status;
+ a->packets_to_capture = max;
+ a->sw_if_index = sw_if_index;
+ a->filter = filter;
+ a->max_bytes_per_pkt = max_bytes_per_pkt;
+ a->drop_err = drop_err;
+
+ rv = vnet_pcap_dispatch_trace_configure (a);
+
+ switch (rv)
+ {
+ case 0:
+ break;
+
+ case VNET_API_ERROR_INVALID_VALUE:
+ return clib_error_return (0, "dispatch trace already enabled...");
+
+ case VNET_API_ERROR_VALUE_EXIST:
+ return clib_error_return (0, "dispatch trace already disabled...");
+
+ case VNET_API_ERROR_INVALID_VALUE_2:
+ return clib_error_return
+ (0, "can't change number of records to capture while tracing...");
+
+ case VNET_API_ERROR_SYSCALL_ERROR_1:
+ return clib_error_return (0, "I/O writing trace capture...");
+
+ case VNET_API_ERROR_NO_SUCH_ENTRY:
+ return clib_error_return (0, "No packets captured...");
+
+ case VNET_API_ERROR_INVALID_MEMORY_SIZE:
+ return clib_error_return (0,
+ "Max bytes per pkt must be > 32, < 9000...");
+
+ case VNET_API_ERROR_NO_SUCH_LABEL:
+ return clib_error_return
+ (0, "No classify filter configured, see 'classify filter...'");
+
+ default:
+ vlib_cli_output (vm, "WARNING: trace configure returned %d", rv);
+ break;
+ }
+ return 0;
+}
+
+/*?
+ * This command is used to start or stop a packet capture, or show
+ * the status of packet capture.
+ *
+ * This command has the following optional parameters:
+ *
+ *
+ * - <b>rx</b> - Capture received packets
+ *
+ * - <b>tx</b> - Capture transmitted packets
+ *
+ * - <b>drop</b> - Capture dropped packets
+ *
+ * - <b>off</b> - Stop capturing packets, write results to the specified file
+ *
+ * - <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>max-bytes-per-pkt <nnnn></b> - Maximum number of bytes to capture
+ * for each packet. Must be >= 32, <= 9000.
+ *
+ * - <b>preallocate-data</b> - Preallocate the data buffer, to avoid
+ * vector expansion delays during pcap capture
+ *
+ * - <b>free-data</b> - Free the data buffer. Ordinarily it's a feature
+ * to retain the data buffer so this option is seldom used.
+ *
+ * - <b>intfc <interface-name>|any</b> - Used to specify a given interface,
+ * or use '<em>any</em>' to run packet capture on all interfaces.
+ * '<em>any</em>' is the default if not provided. Settings from a previous
+ * packet capture are preserved, so '<em>any</em>' can be used to reset
+ * the interface setting.
+ *
+ * - <b>filter</b> - Use the pcap rx / tx / drop trace filter, which
+ * must be configured. Use <b>classify filter pcap...</b> to configure the
+ * filter. The filter will only be executed if the per-interface or
+ * any-interface tests fail.
+ *
+ * - <b>error <node>.<error></b> - filter packets based on a specific error.
+ * For example: error {ip4-udp-lookup}.{No listener for dst port}
+ *
+ * - <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, the file will be
+ * named "/tmp/rx.pcap", "/tmp/tx.pcap", "/tmp/rxandtx.pcap", etc.
+ * 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 a tx packet capture when off:
+ * @cliexstart{pcap trace status}
+ * max is 100, for any interface to file /tmp/vpe.pcap
+ * pcap tx capture is off...
+ * @cliexend
+ * Example of how to start a tx packet capture:
+ * @cliexstart{pcap trace tx max 35 intfc GigabitEthernet0/8/0 file
+ * vppTest.pcap}
+ * @cliexend
+ * Example of how to display the status of a tx packet capture in progress:
+ * @cliexstart{pcap trace status}
+ * max is 35, for interface GigabitEthernet0/8/0 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{pcap trace off}
+ * captured 21 pkts...
+ * saved to /tmp/vppTest.pcap...
+ * @cliexend
+?*/
+/* *INDENT-OFF* */
+
+VLIB_CLI_COMMAND (pcap_tx_trace_command, static) = {
+ .path = "pcap trace",
+ .short_help =
+ "pcap trace [rx] [tx] [drop] [off] [max <nn>] [intfc <interface>|any]\n"
+ " [file <name>] [status] [max-bytes-per-pkt <nnnn>][filter]\n"
+ " [preallocate-data][free-data]",
+ .function = pcap_trace_command_fn,
+};
+/* *INDENT-ON* */
+
+static clib_error_t *
+set_interface_name (vlib_main_t *vm, unformat_input_t *input,
+ vlib_cli_command_t *cmd)
+{
+ clib_error_t *error = 0;
+ unformat_input_t _line_input, *line_input = &_line_input;
+ vnet_main_t *vnm = vnet_get_main ();
+ u32 hw_if_index = ~0;
+ char *name = 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 %s", unformat_vnet_hw_interface, vnm,
+ &hw_if_index, &name))
+ ;
+ else
+ {
+ error = clib_error_return (0, "parse error: '%U'",
+ format_unformat_error, line_input);
+ unformat_free (line_input);
+ vec_free (name);
+ return error;
+ }
+ }
+
+ unformat_free (line_input);
+
+ if (hw_if_index == (u32) ~0 || name == 0)
+ {
+ vec_free (name);
+ error = clib_error_return (0, "please specify valid interface name");
+ return error;
+ }
+
+ error = vnet_rename_interface (vnm, hw_if_index, name);
+ vec_free (name);
+
+ return (error);
+}
+
+VLIB_CLI_COMMAND (cmd_set_if_name, static) = {
+ .path = "set interface name",
+ .short_help = "set interface name <interface-name> <new-interface-name>",
+ .function = set_interface_name,
+ .is_mp_safe = 1,
+};
+
+static clib_error_t *
+set_interface_tx_hash_cmd (vlib_main_t *vm, unformat_input_t *input,
+ vlib_cli_command_t *cmd)
+{
+ clib_error_t *error = 0;
+ unformat_input_t _line_input, *line_input = &_line_input;
+ vnet_main_t *vnm = vnet_get_main ();
+ vnet_hw_interface_t *hi;
+ u8 *hash_name = 0;
+ u32 hw_if_index = (u32) ~0;
+ vnet_hash_fn_t hf;
+ vnet_hash_fn_type_t ftype;
+
+ 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))
+ ;
+ else if (unformat (line_input, "hash-name %s", &hash_name))
+ ;
+ else
+ {
+ error = clib_error_return (0, "parse error: '%U'",
+ format_unformat_error, line_input);
+ unformat_free (line_input);
+ return error;
+ }
+ }
+
+ unformat_free (line_input);
+
+ if (hw_if_index == (u32) ~0)
+ {
+ error = clib_error_return (0, "please specify valid interface name");
+ goto error;
+ }
+
+ if (hash_name == 0)
+ {
+ error = clib_error_return (0, "hash-name is required");
+ goto error;
+ }
+
+ hi = vnet_get_hw_interface (vnm, hw_if_index);
+ ftype =
+ vnet_get_hw_interface_class (vnm, hi->hw_class_index)->tx_hash_fn_type;
+ hf = vnet_hash_function_from_name ((const char *) hash_name, ftype);
+
+ if (!hf)
+ {
+ error = clib_error_return (0, "please specify valid hash name");
+ goto error;
+ }
+
+ hi->hf = hf;
+error:
+ vec_free (hash_name);
+ return (error);
+}
+
+VLIB_CLI_COMMAND (cmd_set_if_tx_hash, static) = {
+ .path = "set interface tx-hash",
+ .short_help = "set interface tx-hash <interface> hash-name <hash-name>",
+ .function = set_interface_tx_hash_cmd,
+};
+
+static clib_error_t *
+show_tx_hash (vlib_main_t *vm, unformat_input_t *input,
+ vlib_cli_command_t *cmd)
+{
+ clib_error_t *error = 0;
+ unformat_input_t _line_input, *line_input = &_line_input;
+ vnet_main_t *vnm = vnet_get_main ();
+ vnet_hw_interface_t *hi;
+ vnet_hash_function_registration_t *hash;
+ u32 hw_if_index = (u32) ~0;
+ vnet_hash_fn_type_t ftype;
+
+ 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))
+ ;
+ else
+ {
+ error = clib_error_return (0, "parse error: '%U'",
+ format_unformat_error, line_input);
+ unformat_free (line_input);
+ goto error;
+ }
+ }
+
+ unformat_free (line_input);
+
+ if (hw_if_index == (u32) ~0)
+ {
+ error = clib_error_return (0, "please specify valid interface name");
+ goto error;
+ }
+
+ hi = vnet_get_hw_interface (vnm, hw_if_index);
+ ftype =
+ vnet_get_hw_interface_class (vnm, hi->hw_class_index)->tx_hash_fn_type;
+
+ if (hi->hf)
+ {
+ hash = vnet_hash_function_from_func (hi->hf, ftype);
+ if (hash)
+ vlib_cli_output (vm, "%U", format_vnet_hash, hash);
+ else
+ vlib_cli_output (vm, "no matching hash function found");
+ }
+ else
+ vlib_cli_output (vm, "no hashing function set");
+
+error:
+ return (error);
+}
+
+VLIB_CLI_COMMAND (cmd_show_tx_hash, static) = {
+ .path = "show interface tx-hash",
+ .short_help = "show interface tx-hash [interface]",
+ .function = show_tx_hash,
+};
+