VPP-279: Document changes for vnet/vnet/devices

Add doxygen documentation for dpdk CLI commands.

Outside of adding documentation to the CLI Commands, modified the CLI
code as follows:
* The "set dpdk interface placement" command allows the user to move
  interface/queues to a different thread. But there is only a subset of
  threads that are valid. Updated the "show dpdk interface placement"
  command to display all valid threads, even if all interface/queues
  have been moved off. Updated the "show dpdk interface hqos placement"
  the same way.
* There is a command to modify the Subport attributes, but no way to
  display the changes. Added a "Subport" section to the "show dpdk
  interface hqos" command.
* Reworked the "set dpdk interface hqos subport" command.
  - The current implementation had a local rte_sched_subport_params
    structure and initialized it to default values, then overwrote with
    what was input. The side effect of this is that if all the current
    data is non-default, and a new command is entered with just one
    attribute, all the remaining attrbutes are getting set back to
    default under the cover. Very confusing for the user. Updated the
    code to read the current value and overwrite what has changed.
  - DPDK does not have a read subport data, so no way query the current
    applied values. The set command was not updating the local copy that
    is created at init. Modified the code to store the updated values if
    the DPDK apply function was successful.
  - Several functions repeated the same code to get a pointer to the
    local HQoS data. Added a utility function.get_hqos(..), to perform
    this action. Did not port other code to use new function.
* The "set dpdk interface hqos pktfield" allows the user to set the
  packet fields required for classifiying the incoming packet. The
  classification is across three fields (subport, pipe, tc). The command
  was using 0,1,2 to represent these three fields, but had no
  explanation regarding these magic numbers. Updated the command to take
  the three tokens (subport, pipe, tc) for more clarity. For legacy
  sake, still allow 0,1,2 to be entered. Also updated the "show dpdk
  interface hqos" command to show these tokens.
* The "set dpdk interface hqos tctbl" maps an interface and value 0-63
  to a traffic class and queue. The "show dpdk interface hqos" command
  showed the internal DPDK magic number for traffic class and queue.
  Updated the show command to display what was input instead of the
  magic number.
* The "show dpdk hqos queue" command always returns zeros by default
  because RTE_SCHED_COLLECT_STATS is not defined in DPDK. Took me a
  while to figure out why I wasn't getting values returned. So returned
  an error message if RTE_SCHED_COLLECT_STATS is not defined instead of
  zeros.

Change-Id: I22b640d668245839ee977ef3602175c61d91d24c
Signed-off-by: Billy McFall <bmcfall@redhat.com>

1 files changed, 594 insertions, 84 deletions

diff --git a/src/vnet/devices/dpdk/cli.c b/src/vnet/devices/dpdk/cli.c
index 1fc665aca41..999988622b0 100644
--- a/src/vnet/devices/dpdk/cli.c
+++ b/src/vnet/devices/dpdk/cli.c
@@ -33,6 +33,56 @@
  * Abstraction Layer and pcap Tx Trace.
  */
 
+
+static clib_error_t *
+get_hqos (u32 hw_if_index, u32 subport_id, dpdk_device_t ** xd,
+	  dpdk_device_config_t ** devconf)
+{
+  dpdk_main_t *dm = &dpdk_main;
+  vnet_hw_interface_t *hw;
+  struct rte_eth_dev_info dev_info;
+  uword *p = 0;
+  clib_error_t *error = NULL;
+
+
+  if (hw_if_index == (u32) ~ 0)
+    {
+      error = clib_error_return (0, "please specify valid interface name");
+      goto done;
+    }
+
+  if (subport_id != 0)
+    {
+      error = clib_error_return (0, "Invalid subport");
+      goto done;
+    }
+
+  hw = vnet_get_hw_interface (dm->vnet_main, hw_if_index);
+  *xd = vec_elt_at_index (dm->devices, hw->dev_instance);
+
+  rte_eth_dev_info_get ((*xd)->device_index, &dev_info);
+  if (dev_info.pci_dev)
+    {				/* bonded interface has no pci info */
+      vlib_pci_addr_t pci_addr;
+
+      pci_addr.domain = dev_info.pci_dev->addr.domain;
+      pci_addr.bus = dev_info.pci_dev->addr.bus;
+      pci_addr.slot = dev_info.pci_dev->addr.devid;
+      pci_addr.function = dev_info.pci_dev->addr.function;
+
+      p =
+	hash_get (dm->conf->device_config_index_by_pci_addr, pci_addr.as_u32);
+    }
+
+  if (p)
+    (*devconf) = pool_elt_at_index (dm->conf->dev_confs, p[0]);
+  else
+    (*devconf) = &dm->conf->default_devconf;
+
+done:
+  return error;
+}
+
 static clib_error_t *
 pcap_trace_command_fn (vlib_main_t * vm,
 		       unformat_input_t * input, vlib_cli_command_t * cmd)
@@ -316,10 +366,19 @@ show_dpdk_buffer (vlib_main_t * vm, unformat_input_t * input,
   return 0;
 }
 
+/*?
+ * This command displays statistics of each DPDK mempool.
+ *
+ * @cliexpar
+ * Example of how to display DPDK buffer data:
+ * @cliexstart{show dpdk buffer}
+ * name="mbuf_pool_socket0"  available =   15104 allocated =    1280 total =   16384
+ * @cliexend
+?*/
 /* *INDENT-OFF* */
 VLIB_CLI_COMMAND (cmd_show_dpdk_bufferr,static) = {
     .path = "show dpdk buffer",
-    .short_help = "show dpdk buffer state",
+    .short_help = "show dpdk buffer",
     .function = show_dpdk_buffer,
     .is_mp_safe = 1,
 };
@@ -378,10 +437,36 @@ test_dpdk_buffer (vlib_main_t * vm, unformat_input_t * input,
   return 0;
 }
 
+/*?
+ * This command tests the allocation and freeing of DPDK buffers.
+ * If both '<em>allocate</em>' and '<em>free</em>' are entered on the
+ * same command, the '<em>free</em>' is executed first. If no
+ * parameters are provided, this command display how many DPDK buffers
+ * the test command has allocated.
+ *
+ * @cliexpar
+ * @parblock
+ *
+ * Example of how to display how many DPDK buffer test command has allcoated:
+ * @cliexstart{test dpdk buffer}
+ * Currently 0 buffers allocated
+ * @cliexend
+ *
+ * Example of how to allocate DPDK buffers using the test command:
+ * @cliexstart{test dpdk buffer allocate 10}
+ * Currently 10 buffers allocated
+ * @cliexend
+ *
+ * Example of how to free DPDK buffers allocated by the test command:
+ * @cliexstart{test dpdk buffer free 10}
+ * Currently 0 buffers allocated
+ * @cliexend
+ * @endparblock
+?*/
 /* *INDENT-OFF* */
 VLIB_CLI_COMMAND (cmd_test_dpdk_buffer,static) = {
     .path = "test dpdk buffer",
-    .short_help = "test dpdk buffer [allocate <nn>][free <nn>]",
+    .short_help = "test dpdk buffer [allocate <nn>] [free <nn>]",
     .function = test_dpdk_buffer,
     .is_mp_safe = 1,
 };
@@ -460,10 +545,20 @@ done:
   return error;
 }
 
+/*?
+ * This command sets the number of DPDK '<em>rx</em>' and
+ * '<em>tx</em>' descriptors for the given physical interface. Use
+ * the command '<em>show hardware-interface</em>' to display the
+ * current descriptor allocation.
+ *
+ * @cliexpar
+ * Example of how to set the DPDK interface descriptors:
+ * @cliexcmd{set dpdk interface descriptors GigabitEthernet0/8/0 rx 512 tx 512}
+?*/
 /* *INDENT-OFF* */
 VLIB_CLI_COMMAND (cmd_set_dpdk_if_desc,static) = {
     .path = "set dpdk interface descriptors",
-    .short_help = "set dpdk interface descriptors <if-name> [rx <n>] [tx <n>]",
+    .short_help = "set dpdk interface descriptors <interface> [rx <nn>] [tx <nn>]",
     .function = set_dpdk_if_desc,
 };
 /* *INDENT-ON* */
@@ -482,7 +577,8 @@ show_dpdk_if_placement (vlib_main_t * vm, unformat_input_t * input,
 
   for (cpu = 0; cpu < vec_len (dm->devices_by_cpu); cpu++)
     {
-      if (vec_len (dm->devices_by_cpu[cpu]))
+      if (cpu >= dm->input_cpu_first_index &&
+	  cpu < (dm->input_cpu_first_index + dm->input_cpu_count))
 	vlib_cli_output (vm, "Thread %u (%s at lcore %u):", cpu,
 			 vlib_worker_threads[cpu].name,
 			 vlib_worker_threads[cpu].lcore_id);
@@ -499,6 +595,21 @@ show_dpdk_if_placement (vlib_main_t * vm, unformat_input_t * input,
   return 0;
 }
 
+/*?
+ * This command is used to display the thread and core each
+ * DPDK interface and queue is assigned too.
+ *
+ * @cliexpar
+ * Example of how to display the DPDK interface placement:
+ * @cliexstart{show dpdk interface placement}
+ * Thread 1 (vpp_wk_0 at lcore 1):
+ *   GigabitEthernet0/8/0 queue 0
+ *   GigabitEthernet0/9/0 queue 0
+ * Thread 2 (vpp_wk_1 at lcore 2):
+ *   GigabitEthernet0/8/0 queue 1
+ *   GigabitEthernet0/9/0 queue 1
+ * @cliexend
+?*/
 /* *INDENT-OFF* */
 VLIB_CLI_COMMAND (cmd_show_dpdk_if_placement,static) = {
     .path = "show dpdk interface placement",
@@ -596,18 +707,18 @@ set_dpdk_if_placement (vlib_main_t * vm, unformat_input_t * input,
                 rte_lcore_to_socket_id(vlib_worker_threads[cpu].lcore_id);
 
               vec_sort_with_function(dm->devices_by_cpu[i],
-                                     dpdk_device_queue_sort);
+		                     dpdk_device_queue_sort);
 
               vec_sort_with_function(dm->devices_by_cpu[cpu],
-                                     dpdk_device_queue_sort);
+		                     dpdk_device_queue_sort);
 
               if (vec_len(dm->devices_by_cpu[i]) == 0)
                 vlib_node_set_state (vlib_mains[i], dpdk_input_node.index,
-                                     VLIB_NODE_STATE_DISABLED);
+		                     VLIB_NODE_STATE_DISABLED);
 
               if (vec_len(dm->devices_by_cpu[cpu]) == 1)
                 vlib_node_set_state (vlib_mains[cpu], dpdk_input_node.index,
-                                     VLIB_NODE_STATE_POLLING);
+		                     VLIB_NODE_STATE_POLLING);
 
               goto done;
             }
@@ -623,10 +734,30 @@ done:
   return error;
 }
 
+/*?
+ * This command is used to assign a given interface, and optionally a
+ * given queue, to a different thread. This will not create a thread,
+ * so the thread must already exist. Use '<em>/etc/vpp/startup.conf</em>'
+ * for the initial thread creation. If the '<em>queue</em>' is not provided,
+ * it defaults to 0.
+ *
+ * @cliexpar
+ * Example of how to display the DPDK interface placement:
+ * @cliexstart{show dpdk interface placement}
+ * Thread 1 (vpp_wk_0 at lcore 1):
+ *   GigabitEthernet0/8/0 queue 0
+ *   GigabitEthernet0/9/0 queue 0
+ * Thread 2 (vpp_wk_1 at lcore 2):
+ *   GigabitEthernet0/8/0 queue 1
+ *   GigabitEthernet0/9/0 queue 1
+ * @cliexend
+ * Example of how to assign a DPDK interface and queue to a thread:
+ * @cliexcmd{set dpdk interface placement GigabitEthernet0/8/0 queue 1 thread 1}
+?*/
 /* *INDENT-OFF* */
 VLIB_CLI_COMMAND (cmd_set_dpdk_if_placement,static) = {
     .path = "set dpdk interface placement",
-    .short_help = "set dpdk interface placement <if-name> [queue <n>]  thread <n>",
+    .short_help = "set dpdk interface placement <interface> [queue <n>] thread <n>",
     .function = set_dpdk_if_placement,
 };
 /* *INDENT-ON* */
@@ -645,7 +776,8 @@ show_dpdk_if_hqos_placement (vlib_main_t * vm, unformat_input_t * input,
 
   for (cpu = 0; cpu < vec_len (dm->devices_by_hqos_cpu); cpu++)
     {
-      if (vec_len (dm->devices_by_hqos_cpu[cpu]))
+      if (cpu >= dm->hqos_cpu_first_index &&
+	  cpu < (dm->hqos_cpu_first_index + dm->hqos_cpu_count))
 	vlib_cli_output (vm, "Thread %u (%s at lcore %u):", cpu,
 			 vlib_worker_threads[cpu].name,
 			 vlib_worker_threads[cpu].lcore_id);
@@ -661,6 +793,19 @@ show_dpdk_if_hqos_placement (vlib_main_t * vm, unformat_input_t * input,
   return 0;
 }
 
+/*?
+ * This command is used to display the thread and core each
+ * DPDK output interface and HQoS queue is assigned too.
+ *
+ * @cliexpar
+ * Example of how to display the DPDK output interface and HQoS queue placement:
+ * @cliexstart{show dpdk interface hqos placement}
+ * Thread 1 (vpp_hqos-threads_0 at lcore 3):
+ *   GigabitEthernet0/8/0 queue 0
+ * Thread 2 (vpp_hqos-threads_1 at lcore 4):
+ *   GigabitEthernet0/9/0 queue 0
+ * @cliexend
+?*/
 /* *INDENT-OFF* */
 VLIB_CLI_COMMAND (cmd_show_dpdk_if_hqos_placement, static) = {
   .path = "show dpdk interface hqos placement",
@@ -749,10 +894,27 @@ done:
   return error;
 }
 
+/*?
+ * This command is used to assign a given DPDK output interface and
+ * HQoS queue to a different thread. This will not create a thread,
+ * so the thread must already exist. Use '<em>/etc/vpp/startup.conf</em>'
+ * for the initial thread creation. See @ref qos_doc for more details.
+ *
+ * @cliexpar
+ * Example of how to display the DPDK output interface and HQoS queue placement:
+ * @cliexstart{show dpdk interface hqos placement}
+ * Thread 1 (vpp_hqos-threads_0 at lcore 3):
+ *   GigabitEthernet0/8/0 queue 0
+ * Thread 2 (vpp_hqos-threads_1 at lcore 4):
+ *   GigabitEthernet0/9/0 queue 0
+ * @cliexend
+ * Example of how to assign a DPDK output interface and HQoS queue to a thread:
+ * @cliexcmd{set dpdk interface hqos placement GigabitEthernet0/8/0 thread 2}
+?*/
 /* *INDENT-OFF* */
 VLIB_CLI_COMMAND (cmd_set_dpdk_if_hqos_placement, static) = {
   .path = "set dpdk interface hqos placement",
-  .short_help = "set dpdk interface hqos placement <if-name> thread <n>",
+  .short_help = "set dpdk interface hqos placement <interface> thread <n>",
   .function = set_dpdk_if_hqos_placement,
 };
 /* *INDENT-ON* */
@@ -819,12 +981,28 @@ done:
   return error;
 }
 
+/*?
+ * This command is used to change the profile associate with a HQoS pipe. The
+ * '<em><profile_id></em>' is zero based. Use the command
+ * '<em>show dpdk interface hqos</em>' to display the content of each profile.
+ * See @ref qos_doc for more details.
+ *
+ * @note
+ * Currently there is not an API to create a new HQoS pipe profile. One is
+ * created by default in the code (search for '<em>hqos_pipe_params_default</em>'').
+ * Additional profiles can be created in code and code recompiled. Then use this
+ * command to assign it.
+ *
+ * @cliexpar
+ * Example of how to assign a new profile to a HQoS pipe:
+ * @cliexcmd{set dpdk interface hqos pipe GigabitEthernet0/8/0 subport 0 pipe 2 profile 1}
+?*/
 /* *INDENT-OFF* */
 VLIB_CLI_COMMAND (cmd_set_dpdk_if_hqos_pipe, static) =
 {
   .path = "set dpdk interface hqos pipe",
-  .short_help = "set dpdk interface hqos pipe <if-name> subport <n> pipe <n> "
-                  "profile <n>",
+  .short_help = "set dpdk interface hqos pipe <interface> subport <subport_id> pipe <pipe_id> "
+                  "profile <profile_id>",
   .function = set_dpdk_if_hqos_pipe,
 };
 /* *INDENT-ON* */
@@ -835,18 +1013,18 @@ set_dpdk_if_hqos_subport (vlib_main_t * vm, unformat_input_t * input,
 {
   unformat_input_t _line_input, *line_input = &_line_input;
   dpdk_main_t *dm = &dpdk_main;
-  vnet_hw_interface_t *hw;
-  dpdk_device_t *xd;
+  dpdk_device_t *xd = NULL;
   u32 hw_if_index = (u32) ~ 0;
   u32 subport_id = (u32) ~ 0;
-  struct rte_sched_subport_params p = {
-    .tb_rate = 1250000000,	/* 10GbE */
-    .tb_size = 1000000,
-    .tc_rate = {1250000000, 1250000000, 1250000000, 1250000000},
-    .tc_period = 10,
-  };
+  struct rte_sched_subport_params p;
   int rv;
   clib_error_t *error = NULL;
+  u32 tb_rate = (u32) ~ 0;
+  u32 tb_size = (u32) ~ 0;
+  u32 tc_rate[RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE] =
+    { (u32) ~ 0, (u32) ~ 0, (u32) ~ 0, (u32) ~ 0 };
+  u32 tc_period = (u32) ~ 0;
+  dpdk_device_config_t *devconf = NULL;
 
   if (!unformat_user (input, unformat_line_input, line_input))
     return 0;
@@ -859,24 +1037,19 @@ set_dpdk_if_hqos_subport (vlib_main_t * vm, unformat_input_t * input,
 	;
       else if (unformat (line_input, "subport %d", &subport_id))
 	;
-      else if (unformat (line_input, "rate %d", &p.tb_rate))
-	{
-	  p.tc_rate[0] = p.tb_rate;
-	  p.tc_rate[1] = p.tb_rate;
-	  p.tc_rate[2] = p.tb_rate;
-	  p.tc_rate[3] = p.tb_rate;
-	}
-      else if (unformat (line_input, "bktsize %d", &p.tb_size))
+      else if (unformat (line_input, "rate %d", &tb_rate))
 	;
-      else if (unformat (line_input, "tc0 %d", &p.tc_rate[0]))
+      else if (unformat (line_input, "bktsize %d", &tb_size))
 	;
-      else if (unformat (line_input, "tc1 %d", &p.tc_rate[1]))
+      else if (unformat (line_input, "tc0 %d", &tc_rate[0]))
 	;
-      else if (unformat (line_input, "tc2 %d", &p.tc_rate[2]))
+      else if (unformat (line_input, "tc1 %d", &tc_rate[1]))
 	;
-      else if (unformat (line_input, "tc3 %d", &p.tc_rate[3]))
+      else if (unformat (line_input, "tc2 %d", &tc_rate[2]))
 	;
-      else if (unformat (line_input, "period %d", &p.tc_period))
+      else if (unformat (line_input, "tc3 %d", &tc_rate[3]))
+	;
+      else if (unformat (line_input, "period %d", &tc_period))
 	;
       else
 	{
@@ -886,20 +1059,59 @@ set_dpdk_if_hqos_subport (vlib_main_t * vm, unformat_input_t * input,
 	}
     }
 
-  if (hw_if_index == (u32) ~ 0)
+  error = get_hqos (hw_if_index, subport_id, &xd, &devconf);
+
+  if (error == NULL)
     {
-      error = clib_error_return (0, "please specify valid interface name");
-      goto done;
-    }
+      /* Copy the current values over to local structure. */
+      memcpy (&p, &devconf->hqos.subport[subport_id], sizeof (p));
 
-  hw = vnet_get_hw_interface (dm->vnet_main, hw_if_index);
-  xd = vec_elt_at_index (dm->devices, hw->dev_instance);
+      /* Update local structure with input values. */
+      if (tb_rate != (u32) ~ 0)
+	{
+	  p.tb_rate = tb_rate;
+	  p.tc_rate[0] = tb_rate;
+	  p.tc_rate[1] = tb_rate;
+	  p.tc_rate[2] = tb_rate;
+	  p.tc_rate[3] = tb_rate;
+	}
+      if (tb_size != (u32) ~ 0)
+	{
+	  p.tb_size = tb_size;
+	}
+      if (tc_rate[0] != (u32) ~ 0)
+	{
+	  p.tc_rate[0] = tc_rate[0];
+	}
+      if (tc_rate[1] != (u32) ~ 0)
+	{
+	  p.tc_rate[1] = tc_rate[1];
+	}
+      if (tc_rate[2] != (u32) ~ 0)
+	{
+	  p.tc_rate[2] = tc_rate[2];
+	}
+      if (tc_rate[3] != (u32) ~ 0)
+	{
+	  p.tc_rate[3] = tc_rate[3];
+	}
+      if (tc_period != (u32) ~ 0)
+	{
+	  p.tc_period = tc_period;
+	}
 
-  rv = rte_sched_subport_config (xd->hqos_ht->hqos, subport_id, &p);
-  if (rv)
-    {
-      error = clib_error_return (0, "subport configuration failed");
-      goto done;
+      /* Apply changes. */
+      rv = rte_sched_subport_config (xd->hqos_ht->hqos, subport_id, &p);
+      if (rv)
+	{
+	  error = clib_error_return (0, "subport configuration failed");
+	  goto done;
+	}
+      else
+	{
+	  /* Successfully applied, so save of the input values. */
+	  memcpy (&devconf->hqos.subport[subport_id], &p, sizeof (p));
+	}
     }
 
 done:
@@ -908,10 +1120,25 @@ done:
   return error;
 }
 
+/*?
+ * This command is used to set the subport level parameters such as token
+ * bucket rate (bytes per seconds), token bucket size (bytes), traffic class
+ * rates (bytes per seconds) and token update period (Milliseconds).
+ *
+ * By default, the '<em>rate</em>' is set to 1250000000 bytes/second (10GbE
+ * rate) and each of the four traffic classes is set to 100% of the port rate.
+ * If the '<em>rate</em>' is updated by this command, all four traffic classes
+ * are assigned the same value. Each of the four traffic classes can be updated
+ * individually.
+ *
+ * @cliexpar
+ * Example of how modify the subport attributes for a 1GbE link:
+ * @cliexcmd{set dpdk interface hqos subport GigabitEthernet0/8/0 subport 0 rate 125000000}
+?*/
 /* *INDENT-OFF* */
 VLIB_CLI_COMMAND (cmd_set_dpdk_if_hqos_subport, static) = {
   .path = "set dpdk interface hqos subport",
-  .short_help = "set dpdk interface hqos subport <if-name> subport <n> "
+  .short_help = "set dpdk interface hqos subport <interface> subport <subport_id> "
                  "[rate <n>] [bktsize <n>] [tc0 <n>] [tc1 <n>] [tc2 <n>] [tc3 <n>] "
                  "[period <n>]",
   .function = set_dpdk_if_hqos_subport,
@@ -974,7 +1201,7 @@ set_dpdk_if_hqos_tctbl (vlib_main_t * vm, unformat_input_t * input,
     }
   if (queue >= RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS)
     {
-      error = clib_error_return (0, "invalid traffic class");
+      error = clib_error_return (0, "invalid traffic class queue");
       goto done;
     }
 
@@ -1004,10 +1231,31 @@ done:
   return error;
 }
 
+/*?
+ * This command is used to set the traffic class translation table. The
+ * traffic class translation table is used to map 64 values (0-63) to one of
+ * four traffic class and one of four HQoS input queue. Use the '<em>show
+ * dpdk interface hqos</em>' command to display the traffic class translation
+ * table. See @ref qos_doc for more details.
+ *
+ * This command has the following parameters:
+ *
+ * - <b><interface></b> - Used to specify the output interface.
+ *
+ * - <b>entry <map_val></b> - Mapped value (0-63) to assign traffic class and queue to.
+ *
+ * - <b>tc <tc_id></b> - Traffic class (0-3) to be used by the provided mapped value.
+ *
+ * - <b>queue <queue_id></b> - HQoS input queue (0-3) to be used by the provided mapped value.
+ *
+ * @cliexpar
+ * Example of how modify the traffic class translation table:
+ * @cliexcmd{set dpdk interface hqos tctbl GigabitEthernet0/8/0 entry 16 tc 2 queue 2}
+?*/
 /* *INDENT-OFF* */
 VLIB_CLI_COMMAND (cmd_set_dpdk_if_hqos_tctbl, static) = {
   .path = "set dpdk interface hqos tctbl",
-  .short_help = "set dpdk interface hqos tctbl <if-name> entry <n> tc <n> queue <n>",
+  .short_help = "set dpdk interface hqos tctbl <interface> entry <map_val> tc <tc_id> queue <queue_id>",
   .function = set_dpdk_if_hqos_tctbl,
 };
 /* *INDENT-ON* */
@@ -1058,6 +1306,12 @@ set_dpdk_if_hqos_pktfield (vlib_main_t * vm, unformat_input_t * input,
 	  (line_input, "%U", unformat_vnet_hw_interface, dm->vnet_main,
 	   &hw_if_index))
 	;
+      else if (unformat (line_input, "id subport"))
+	id = 0;
+      else if (unformat (line_input, "id pipe"))
+	id = 1;
+      else if (unformat (line_input, "id tc"))
+	id = 2;
       else if (unformat (line_input, "id %d", &id))
 	;
       else if (unformat (line_input, "offset %d", &offset))
@@ -1178,11 +1432,50 @@ done:
   return error;
 }
 
+/*?
+ * This command is used to set the packet fields required for classifiying the
+ * incoming packet. As a result of classification process, packet field
+ * information will be mapped to 5 tuples (subport, pipe, traffic class, pipe,
+ * color) and stored in packet mbuf.
+ *
+ * This command has the following parameters:
+ *
+ * - <b><interface></b> - Used to specify the output interface.
+ *
+ * - <b>id subport|pipe|tc</b> - Classification occurs across three fields.
+ * This parameter indicates which of the three masks are being configured. Legacy
+ * code used 0-2 to represent these three fields, so 0-2 is still accepted.
+ *   - <b>subport|0</b> - Currently only one subport is supported, so only
+ * an empty mask is supported for the subport classification.
+ *   - <b>pipe|1</b> - Currently, 4096 pipes per subport are supported, so a
+ * 12-bit mask should be configure to map to the 0-4095 pipes.
+ *   - <b>tc|2</b> - The translation table (see '<em>set dpdk interface hqos
+ * tctbl</em>' command) maps each value (0-63) into one of the 4 traffic classes
+ * per pipe. A 6-bit mask should be configure to map this field to a traffic class.
+ *
+ * - <b>offset <n></b> - Offset in the packet to apply the 64-bit mask for classification.
+ * The offset should be on an 8-byte boundary (0,8,16,24..).
+ *
+ * - <b>mask <hex-mask></b> - 64-bit mask to apply to packet at the given '<em>offset</em>'.
+ * Bits must be contiguous and should not include '<em>0x</em>'.
+ *
+ * The default values for the '<em>pktfield</em>' assumes Ethernet/IPv4/UDP packets with
+ * no VLAN. Adjust based on expected packet format and desired classification field.
+ * - '<em>subport</em>' is always empty (offset 0 mask 0000000000000000)
+ * - By default, '<em>pipe</em>' maps to the UDP payload bits 12 .. 23 (offset 40
+ * mask 0000000fff000000)
+ * - By default, '<em>tc</em>' maps to the DSCP field in IP header (offset 48 mask
+ * 00000000000000fc)
+ *
+ * @cliexpar
+ * Example of how modify the '<em>pipe</em>' classification filter to match VLAN:
+ * @cliexcmd{set dpdk interface hqos pktfield GigabitEthernet0/8/0 id pipe offset 8 mask 0000000000000FFF}
+?*/
 /* *INDENT-OFF* */
 VLIB_CLI_COMMAND (cmd_set_dpdk_if_hqos_pktfield, static) = {
   .path = "set dpdk interface hqos pktfield",
-  .short_help = "set dpdk interface hqos pktfield <if-name> id <n> offset <n> "
-                 "mask <n>",
+  .short_help = "set dpdk interface hqos pktfield <interface> id subport|pipe|tc offset <n> "
+                 "mask <hex-mask>",
   .function = set_dpdk_if_hqos_pktfield,
 };
 /* *INDENT-ON* */
@@ -1201,7 +1494,7 @@ show_dpdk_if_hqos (vlib_main_t * vm, unformat_input_t * input,
   dpdk_device_hqos_per_worker_thread_t *wk;
   u32 *tctbl;
   u32 hw_if_index = (u32) ~ 0;
-  u32 profile_id, i;
+  u32 profile_id, subport_id, i;
   struct rte_eth_dev_info dev_info;
   dpdk_device_config_t *devconf = 0;
   vlib_thread_registration_t *tr;
@@ -1284,40 +1577,156 @@ show_dpdk_if_hqos (vlib_main_t * vm, unformat_input_t * input,
 		   ht->hqos_burst_deq);
 
   vlib_cli_output (vm,
-		   "   Packet field 0: slab position = %4u, slab bitmask = 0x%016llx",
+		   "   Packet field 0: slab position = %4u, slab bitmask = 0x%016llx   (subport)",
 		   wk->hqos_field0_slabpos, wk->hqos_field0_slabmask);
   vlib_cli_output (vm,
-		   "   Packet field 1: slab position = %4u, slab bitmask = 0x%016llx",
+		   "   Packet field 1: slab position = %4u, slab bitmask = 0x%016llx   (pipe)",
 		   wk->hqos_field1_slabpos, wk->hqos_field1_slabmask);
   vlib_cli_output (vm,
-		   "   Packet field 2: slab position = %4u, slab bitmask = 0x%016llx",
+		   "   Packet field 2: slab position = %4u, slab bitmask = 0x%016llx   (tc)",
 		   wk->hqos_field2_slabpos, wk->hqos_field2_slabmask);
-  vlib_cli_output (vm, "   Packet field 2 translation table:");
-  vlib_cli_output (vm, "     [ 0 .. 15]: "
-		   "%2u %2u %2u %2u %2u %2u %2u %2u %2u %2u %2u %2u %2u %2u %2u %2u",
-		   tctbl[0], tctbl[1], tctbl[2], tctbl[3],
-		   tctbl[4], tctbl[5], tctbl[6], tctbl[7],
-		   tctbl[8], tctbl[9], tctbl[10], tctbl[11],
-		   tctbl[12], tctbl[13], tctbl[14], tctbl[15]);
-  vlib_cli_output (vm, "     [16 .. 31]: "
-		   "%2u %2u %2u %2u %2u %2u %2u %2u %2u %2u %2u %2u %2u %2u %2u %2u",
-		   tctbl[16], tctbl[17], tctbl[18], tctbl[19],
-		   tctbl[20], tctbl[21], tctbl[22], tctbl[23],
-		   tctbl[24], tctbl[25], tctbl[26], tctbl[27],
-		   tctbl[28], tctbl[29], tctbl[30], tctbl[31]);
-  vlib_cli_output (vm, "     [32 .. 47]: "
-		   "%2u %2u %2u %2u %2u %2u %2u %2u %2u %2u %2u %2u %2u %2u %2u %2u",
-		   tctbl[32], tctbl[33], tctbl[34], tctbl[35],
-		   tctbl[36], tctbl[37], tctbl[38], tctbl[39],
-		   tctbl[40], tctbl[41], tctbl[42], tctbl[43],
-		   tctbl[44], tctbl[45], tctbl[46], tctbl[47]);
-  vlib_cli_output (vm, "     [48 .. 63]: "
-		   "%2u %2u %2u %2u %2u %2u %2u %2u %2u %2u %2u %2u %2u %2u %2u %2u",
-		   tctbl[48], tctbl[49], tctbl[50], tctbl[51],
-		   tctbl[52], tctbl[53], tctbl[54], tctbl[55],
-		   tctbl[56], tctbl[57], tctbl[58], tctbl[59],
-		   tctbl[60], tctbl[61], tctbl[62], tctbl[63]);
-
+  vlib_cli_output (vm,
+		   "   Packet field 2  tc translation table: ([Mapped Value Range]: tc/queue tc/queue ...)");
+  vlib_cli_output (vm,
+		   "     [ 0 .. 15]: "
+		   "%u/%u %u/%u %u/%u %u/%u %u/%u %u/%u %u/%u %u/%u %u/%u %u/%u %u/%u %u/%u %u/%u %u/%u %u/%u %u/%u",
+		   tctbl[0] / RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[0] % RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[1] / RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[1] % RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[2] / RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[2] % RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[3] / RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[3] % RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[4] / RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[4] % RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[5] / RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[5] % RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[6] / RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[6] % RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[7] / RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[7] % RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[8] / RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[8] % RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[9] / RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[9] % RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[10] / RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[10] % RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[11] / RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[11] % RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[12] / RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[12] % RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[13] / RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[13] % RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[14] / RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[14] % RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[15] / RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[15] % RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS);
+  vlib_cli_output (vm,
+		   "     [16 .. 31]: "
+		   "%u/%u %u/%u %u/%u %u/%u %u/%u %u/%u %u/%u %u/%u %u/%u %u/%u %u/%u %u/%u %u/%u %u/%u %u/%u %u/%u",
+		   tctbl[16] / RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[16] % RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[17] / RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[17] % RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[18] / RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[18] % RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[19] / RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[19] % RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[20] / RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[20] % RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[21] / RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[21] % RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[22] / RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[22] % RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[23] / RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[23] % RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[24] / RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[24] % RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[25] / RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[25] % RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[26] / RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[26] % RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[27] / RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[27] % RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[28] / RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[28] % RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[29] / RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[29] % RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[30] / RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[30] % RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[31] / RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[31] % RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS);
+  vlib_cli_output (vm,
+		   "     [32 .. 47]: "
+		   "%u/%u %u/%u %u/%u %u/%u %u/%u %u/%u %u/%u %u/%u %u/%u %u/%u %u/%u %u/%u %u/%u %u/%u %u/%u %u/%u",
+		   tctbl[32] / RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[32] % RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[33] / RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[33] % RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[34] / RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[34] % RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[35] / RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[35] % RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[36] / RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[36] % RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[37] / RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[37] % RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[38] / RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[38] % RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[39] / RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[39] % RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[40] / RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[40] % RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[41] / RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[41] % RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[42] / RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[42] % RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[43] / RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[43] % RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[44] / RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[44] % RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[45] / RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[45] % RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[46] / RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[46] % RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[47] / RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[47] % RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS);
+  vlib_cli_output (vm,
+		   "     [48 .. 63]: "
+		   "%u/%u %u/%u %u/%u %u/%u %u/%u %u/%u %u/%u %u/%u %u/%u %u/%u %u/%u %u/%u %u/%u %u/%u %u/%u %u/%u",
+		   tctbl[48] / RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[48] % RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[49] / RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[49] % RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[50] / RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[50] % RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[51] / RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[51] % RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[52] / RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[52] % RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[53] / RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[53] % RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[54] / RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[54] % RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[55] / RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[55] % RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[56] / RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[56] % RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[57] / RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[57] % RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[58] / RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[58] % RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[59] / RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[59] % RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[60] / RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[60] % RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[61] / RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[61] % RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[62] / RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[62] % RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[63] / RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS,
+		   tctbl[63] % RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS);
   vlib_cli_output (vm, " Port:");
   vlib_cli_output (vm, "   Rate = %u bytes/second", cfg->port.rate);
   vlib_cli_output (vm, "   MTU = %u bytes", cfg->port.mtu);
@@ -1334,6 +1743,23 @@ show_dpdk_if_hqos (vlib_main_t * vm, unformat_input_t * input,
   vlib_cli_output (vm, "   Number of pipe profiles = %u",
 		   cfg->port.n_pipe_profiles);
 
+  for (subport_id = 0; subport_id < vec_len (cfg->subport); subport_id++)
+    {
+      vlib_cli_output (vm, " Subport %u:", subport_id);
+      vlib_cli_output (vm, "   Rate = %u bytes/second",
+		       cfg->subport[subport_id].tb_rate);
+      vlib_cli_output (vm, "   Token bucket size = %u bytes",
+		       cfg->subport[subport_id].tb_size);
+      vlib_cli_output (vm,
+		       "   Traffic class rate: TC0 = %u, TC1 = %u, TC2 = %u, TC3 = %u bytes/second",
+		       cfg->subport[subport_id].tc_rate[0],
+		       cfg->subport[subport_id].tc_rate[1],
+		       cfg->subport[subport_id].tc_rate[2],
+		       cfg->subport[subport_id].tc_rate[3]);
+      vlib_cli_output (vm, "   TC period = %u milliseconds",
+		       cfg->subport[subport_id].tc_period);
+    }
+
   for (profile_id = 0; profile_id < vec_len (cfg->pipe); profile_id++)
     {
       vlib_cli_output (vm, " Pipe profile %u:", profile_id);
@@ -1398,10 +1824,53 @@ done:
   return error;
 }
 
+/*?
+ * This command is used to display details of an output interface's HQoS
+ * settings.
+ *
+ * @cliexpar
+ * Example of how to display HQoS settings for an interfaces:
+ * @cliexstart{show dpdk interface hqos GigabitEthernet0/8/0}
+ *  Thread:
+ *    Input SWQ size = 4096 packets
+ *    Enqueue burst size = 256 packets
+ *    Dequeue burst size = 220 packets
+ *    Packet field 0: slab position =    0, slab bitmask = 0x0000000000000000   (subport)
+ *    Packet field 1: slab position =   40, slab bitmask = 0x0000000fff000000   (pipe)
+ *    Packet field 2: slab position =    8, slab bitmask = 0x00000000000000fc   (tc)
+ *    Packet field 2  tc translation table: ([Mapped Value Range]: tc/queue tc/queue ...)
+ *      [ 0 .. 15]: 0/0 0/1 0/2 0/3 1/0 1/1 1/2 1/3 2/0 2/1 2/2 2/3 3/0 3/1 3/2 3/3
+ *      [16 .. 31]: 0/0 0/1 0/2 0/3 1/0 1/1 1/2 1/3 2/0 2/1 2/2 2/3 3/0 3/1 3/2 3/3
+ *      [32 .. 47]: 0/0 0/1 0/2 0/3 1/0 1/1 1/2 1/3 2/0 2/1 2/2 2/3 3/0 3/1 3/2 3/3
+ *      [48 .. 63]: 0/0 0/1 0/2 0/3 1/0 1/1 1/2 1/3 2/0 2/1 2/2 2/3 3/0 3/1 3/2 3/3
+ *  Port:
+ *    Rate = 1250000000 bytes/second
+ *    MTU = 1514 bytes
+ *    Frame overhead = 24 bytes
+ *    Number of subports = 1
+ *    Number of pipes per subport = 4096
+ *    Packet queue size: TC0 = 64, TC1 = 64, TC2 = 64, TC3 = 64 packets
+ *    Number of pipe profiles = 2
+ *  Subport 0:
+ *    Rate = 1250000000 bytes/second
+ *    Token bucket size = 1000000 bytes
+ *    Traffic class rate: TC0 = 1250000000, TC1 = 1250000000, TC2 = 1250000000, TC3 = 1250000000 bytes/second
+ *    TC period = 10 milliseconds
+ *  Pipe profile 0:
+ *    Rate = 305175 bytes/second
+ *    Token bucket size = 1000000 bytes
+ *    Traffic class rate: TC0 = 305175, TC1 = 305175, TC2 = 305175, TC3 = 305175 bytes/second
+ *    TC period = 40 milliseconds
+ *    TC0 WRR weights: Q0 = 1, Q1 = 1, Q2 = 1, Q3 = 1
+ *    TC1 WRR weights: Q0 = 1, Q1 = 1, Q2 = 1, Q3 = 1
+ *    TC2 WRR weights: Q0 = 1, Q1 = 1, Q2 = 1, Q3 = 1
+ *    TC3 WRR weights: Q0 = 1, Q1 = 1, Q2 = 1, Q3 = 1
+ * @cliexend
+?*/
 /* *INDENT-OFF* */
 VLIB_CLI_COMMAND (cmd_show_dpdk_if_hqos, static) = {
   .path = "show dpdk interface hqos",
-  .short_help = "show dpdk interface hqos <if-name>",
+  .short_help = "show dpdk interface hqos <interface>",
   .function = show_dpdk_if_hqos,
 };
 
@@ -1412,6 +1881,8 @@ show_dpdk_hqos_queue_stats (vlib_main_t * vm, unformat_input_t * input,
 			    vlib_cli_command_t * cmd)
 {
   unformat_input_t _line_input, *line_input = &_line_input;
+  clib_error_t *error = NULL;
+#ifdef RTE_SCHED_COLLECT_STATS
   dpdk_main_t *dm = &dpdk_main;
   u32 hw_if_index = (u32) ~ 0;
   u32 subport = (u32) ~ 0;
@@ -1426,7 +1897,6 @@ show_dpdk_hqos_queue_stats (vlib_main_t * vm, unformat_input_t * input,
   u32 qindex;
   struct rte_sched_queue_stats stats;
   u16 qlen;
-  clib_error_t *error = NULL;
 
   if (!unformat_user (input, unformat_line_input, line_input))
     return 0;
@@ -1517,6 +1987,16 @@ show_dpdk_hqos_queue_stats (vlib_main_t * vm, unformat_input_t * input,
   vlib_cli_output (vm, "%=24s%=16d", "Bytes", stats.n_bytes);
   vlib_cli_output (vm, "%=24s%=16d", "Bytes dropped", stats.n_bytes_dropped);
 
+#else
+
+  /* Get a line of input */
+  if (!unformat_user (input, unformat_line_input, line_input))
+    return 0;
+
+  vlib_cli_output (vm, "RTE_SCHED_COLLECT_STATS disabled in DPDK");
+  goto done;
+
+#endif
 
 done:
   unformat_free (line_input);
@@ -1524,10 +2004,29 @@ done:
   return error;
 }
 
+/*?
+ * This command is used to display statistics associated with a HQoS traffic class
+ * queue.
+ *
+ * @note
+ * Statistic collection by the scheduler is disabled by default in DPDK. In order to
+ * turn it on, add the following line to '<em>../vpp/dpdk/Makefile</em>':
+ * - <b>$(call set,RTE_SCHED_COLLECT_STATS,y)</b>
+ *
+ * @cliexpar
+ * Example of how to display statistics of HQoS a HQoS traffic class queue:
+ * @cliexstart{show dpdk hqos queue GigabitEthernet0/9/0 subport 0 pipe 3181 tc 0 tc_q 0}
+ *      Stats Parameter          Value
+ *          Packets               140
+ *      Packets dropped            0
+ *           Bytes               8400
+ *       Bytes dropped             0
+ * @cliexend
+?*/
 /* *INDENT-OFF* */
 VLIB_CLI_COMMAND (cmd_show_dpdk_hqos_queue_stats, static) = {
   .path = "show dpdk hqos queue",
-  .short_help = "show dpdk hqos queue <if-name> subport <subport> pipe <pipe> tc <tc> tc_q <tc_q>",
+  .short_help = "show dpdk hqos queue <interface> subport <subport_id> pipe <pipe_id> tc <tc_id> tc_q <queue_id>",
   .function = show_dpdk_hqos_queue_stats,
 };
 /* *INDENT-ON* */
@@ -1544,10 +2043,21 @@ show_dpdk_version_command_fn (vlib_main_t * vm,
   return 0;
 }
 
+/*?
+ * This command is used to display the current DPDK version and
+ * the list of arguments passed to DPDK when started.
+ *
+ * @cliexpar
+ * Example of how to display how many DPDK buffer test command has allcoated:
+ * @cliexstart{show dpdk version}
+ * DPDK Version:        DPDK 16.11.0
+ * DPDK EAL init args:  -c 1 -n 4 --huge-dir /run/vpp/hugepages --file-prefix vpp -w 0000:00:08.0 -w 0000:00:09.0 --master-lcore 0 --socket-mem 256
+ * @cliexend
+?*/
 /* *INDENT-OFF* */
 VLIB_CLI_COMMAND (show_vpe_version_command, static) = {
   .path = "show dpdk version",
-  .short_help = "show dpdk version information",
+  .short_help = "show dpdk version",
   .function = show_dpdk_version_command_fn,
 };
 /* *INDENT-ON* */