src/vnet/qos/qos_mark.c - fdio/vpp - Gitiles

 /*
  * Copyright (c) 2018 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.
  */

 #include <vnet/ip/ip.h>
 #include <vnet/feature/feature.h>
 #include <vnet/qos/qos_egress_map.h>
 #include <vnet/qos/qos_mark.h>

 /**
  * per-interface vector of which MAP is used by which interface
  * for each output source
  */
 index_t *qos_mark_configs[QOS_N_SOURCES];

 void
 qos_mark_ip_enable_disable (u32 sw_if_index, u8 enable)
 {
   vnet_feature_enable_disable ("ip6-output", "ip6-qos-mark",
 			       sw_if_index, enable, NULL, 0);
   vnet_feature_enable_disable ("ip4-output", "ip4-qos-mark",
 			       sw_if_index, enable, NULL, 0);
 }

 void
 qos_mark_vlan_enable_disable (u32 sw_if_index, u8 enable)
 {
   vnet_feature_enable_disable ("interface-output", "vlan-qos-mark",
 			       sw_if_index, enable, NULL, 0);
 }

 void
 qos_mark_mpls_enable_disable (u32 sw_if_index, u8 enable)
 {
   vnet_feature_enable_disable ("mpls-output", "mpls-qos-mark",
 			       sw_if_index, enable, NULL, 0);
 }

 static void
 qos_egress_map_feature_config (u32 sw_if_index, qos_source_t qs, u8 enable)
 {
   switch (qs)
     {
     case QOS_SOURCE_EXT:
       ASSERT (0);
       break;
     case QOS_SOURCE_VLAN:
       qos_mark_vlan_enable_disable (sw_if_index, enable);
       break;
     case QOS_SOURCE_MPLS:
       qos_mark_mpls_enable_disable (sw_if_index, enable);
       break;
     case QOS_SOURCE_IP:
       qos_mark_ip_enable_disable (sw_if_index, enable);
       break;
     }
 }

 always_inline qos_egress_map_t *
 qos_egress_map_interface (u32 sw_if_index, qos_source_t output_source)
 {
   ASSERT (vec_len (qos_mark_configs[output_source]) > sw_if_index);

   return pool_elt_at_index (qem_pool,
 			    qos_mark_configs[output_source][sw_if_index]);
 }

 /**
  * per-packet trace data
  */
 typedef struct qos_mark_trace_t_
 {
   /* per-pkt trace data */
   qos_bits_t bits;
   qos_source_t input;
   u32 used;
 } qos_mark_trace_t;

 static inline uword
 qos_mark_inline (vlib_main_t * vm,
 		 vlib_node_runtime_t * node,
 		 vlib_frame_t * frame, qos_source_t output_source, int is_ip6)
 {
   u32 n_left_from, *from, *to_next, next_index;

   next_index = 0;
   n_left_from = frame->n_vectors;
   from = vlib_frame_vector_args (frame);

   while (n_left_from > 0)
     {
       u32 n_left_to_next;

       vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);

       while (n_left_from > 0 && n_left_to_next > 0)
 	{
 	  qos_source_t input_source0;
 	  ethernet_vlan_header_t *vlan0;
 	  u32 sw_if_index0, next0, bi0;
 	  qos_egress_map_t *qem0;
 	  ip4_header_t *ip4_0;
 	  ip6_header_t *ip6_0;
 	  vlib_buffer_t *b0;
 	  qos_bits_t qos0;
 	  u8 *mpls_bytes_0;
 	  u8 eos0;

 	  next0 = 0;
 	  bi0 = from[0];
 	  to_next[0] = bi0;
 	  from += 1;
 	  to_next += 1;
 	  n_left_from -= 1;
 	  n_left_to_next -= 1;

 	  b0 = vlib_get_buffer (vm, bi0);
 	  sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_TX];
 	  input_source0 = vnet_buffer2 (b0)->qos.source;

 	  qem0 = qos_egress_map_interface (sw_if_index0, output_source);
 	  qos0 = qem0->qem_output[input_source0][vnet_buffer2 (b0)->qos.bits];

 	  if (PREDICT_TRUE (b0->flags & VNET_BUFFER_F_QOS_DATA_VALID))
 	    {
 	      /* there is a source of QoS recording for this packet */
 	      if (QOS_SOURCE_IP == output_source)
 		{
 		  if (is_ip6)
 		    {
 		      ip6_0 = (vlib_buffer_get_current (b0) +
 			       vnet_buffer (b0)->ip.save_rewrite_length);

 		      ip6_set_traffic_class_network_order (ip6_0, qos0);
 		    }
 		  else
 		    {
 		      ip4_0 = (vlib_buffer_get_current (b0) +
 			       vnet_buffer (b0)->ip.save_rewrite_length);
 		      if (PREDICT_FALSE (qos0 != ip4_0->tos))
 			{
 			  ip4_0->tos = qos0;
 			  ip4_0->checksum = ip4_header_checksum (ip4_0);
 			}
 		    }
 		}
 	      else if (QOS_SOURCE_MPLS == output_source)
 		{
 		  mpls_bytes_0 = (vlib_buffer_get_current (b0) +
 				  vnet_buffer (b0)->mpls.save_rewrite_length);

 		  /* apply to all the labels in the stack */
 		  do
 		    {
 		      /* clear out the old COS bts */
 		      mpls_bytes_0[2] &= 0xf1;
 		      /* OR in 3 bits of the mapped value */
 		      mpls_bytes_0[2] |= (qos0 & 0x7) << 1;
 		      eos0 = mpls_bytes_0[2] & 0x1;
 		      mpls_bytes_0 += 4;
 		    }
 		  while (!eos0);
 		}
 	      else if (QOS_SOURCE_VLAN == output_source)
 		{
 		  vlan0 = (vlib_buffer_get_current (b0) +
 			   sizeof (ethernet_header_t));

 		  ethernet_vlan_header_set_priority_net_order (vlan0, qos0);
 		}
 	    }
 	  vnet_feature_next (sw_if_index0, &next0, b0);

 	  if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
 	    {
 	      qos_mark_trace_t *t =
 		vlib_add_trace (vm, node, b0, sizeof (*t));
 	      t->bits = qos0;
 	      t->input = input_source0;
 	      t->used = (b0->flags & VNET_BUFFER_F_QOS_DATA_VALID);
 	    }

 	  /* verify speculative enqueue, maybe switch current next frame */
 	  vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
 					   to_next, n_left_to_next,
 					   bi0, next0);
 	}

       vlib_put_next_frame (vm, node, next_index, n_left_to_next);
     }

   return frame->n_vectors;
 }

 /* packet trace format function */
 static u8 *
 format_qos_mark_trace (u8 * s, va_list * args)
 {
   CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
   CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
   qos_mark_trace_t *t = va_arg (*args, qos_mark_trace_t *);

   s = format (s, "source:%U qos:%d used:%s",
 	      format_qos_source, t->input, t->bits, (t->used ? "yes" : "no"));

   return s;
 }

 static inline uword
 ip4_qos_mark (vlib_main_t * vm, vlib_node_runtime_t * node,
 	      vlib_frame_t * frame)
 {
   return (qos_mark_inline (vm, node, frame, QOS_SOURCE_IP, 0));
 }

 static inline uword
 ip6_qos_mark (vlib_main_t * vm, vlib_node_runtime_t * node,
 	      vlib_frame_t * frame)
 {
   return (qos_mark_inline (vm, node, frame, QOS_SOURCE_IP, 1));
 }

 static inline uword
 mpls_qos_mark (vlib_main_t * vm, vlib_node_runtime_t * node,
 	       vlib_frame_t * frame)
 {
   return (qos_mark_inline (vm, node, frame, QOS_SOURCE_MPLS, 0));
 }

 static inline uword
 vlan_qos_mark (vlib_main_t * vm, vlib_node_runtime_t * node,
 	       vlib_frame_t * frame)
 {
   return (qos_mark_inline (vm, node, frame, QOS_SOURCE_VLAN, 0));
 }

 /* *INDENT-OFF* */
 VLIB_REGISTER_NODE (ip4_qos_mark_node) = {
   .function = ip4_qos_mark,
   .name = "ip4-qos-mark",
   .vector_size = sizeof (u32),
   .format_trace = format_qos_mark_trace,
   .type = VLIB_NODE_TYPE_INTERNAL,

   .n_errors = 0,
   .n_next_nodes = 1,

   .next_nodes = {
     [0] = "ip4-drop",
   },
 };

 VLIB_NODE_FUNCTION_MULTIARCH (ip4_qos_mark_node, ip4_qos_mark);

 VNET_FEATURE_INIT (ip4_qos_mark_node, static) = {
     .arc_name = "ip4-output",
     .node_name = "ip4-qos-mark",
 };

 VLIB_REGISTER_NODE (ip6_qos_mark_node) = {
   .function = ip6_qos_mark,
   .name = "ip6-qos-mark",
   .vector_size = sizeof (u32),
   .format_trace = format_qos_mark_trace,
   .type = VLIB_NODE_TYPE_INTERNAL,

   .n_errors = 0,
   .n_next_nodes = 1,

   .next_nodes = {
     [0] = "ip6-drop",
   },
 };

 VLIB_NODE_FUNCTION_MULTIARCH (ip6_qos_mark_node, ip6_qos_mark);

 VNET_FEATURE_INIT (ip6_qos_mark_node, static) = {
     .arc_name = "ip6-output",
     .node_name = "ip6-qos-mark",
 };

 VLIB_REGISTER_NODE (mpls_qos_mark_node) = {
   .function = mpls_qos_mark,
   .name = "mpls-qos-mark",
   .vector_size = sizeof (u32),
   .format_trace = format_qos_mark_trace,
   .type = VLIB_NODE_TYPE_INTERNAL,

   .n_errors = 0,
   .n_next_nodes = 1,

   .next_nodes = {
     [0] = "mpls-drop",
   },
 };

 VLIB_NODE_FUNCTION_MULTIARCH (mpls_qos_mark_node, mpls_qos_mark);

 VNET_FEATURE_INIT (mpls_qos_mark_node, static) = {
     .arc_name = "mpls-output",
     .node_name = "mpls-qos-mark",
 };
 VLIB_REGISTER_NODE (vlan_qos_mark_node) = {
   .function = vlan_qos_mark,
   .name = "vlan-qos-mark",
   .vector_size = sizeof (u32),
   .format_trace = format_qos_mark_trace,
   .type = VLIB_NODE_TYPE_INTERNAL,

   .n_errors = 0,
   .n_next_nodes = 1,

   .next_nodes = {
     [0] = "error-drop",
   },
 };

 VLIB_NODE_FUNCTION_MULTIARCH (vlan_qos_mark_node, vlan_qos_mark);

 VNET_FEATURE_INIT (vlan_qos_mark_node, static) = {
     .arc_name = "interface-output",
     .node_name = "vlan-qos-mark",
 };
 /* *INDENT-ON* */

 int
 qos_mark_enable (u32 sw_if_index,
 		 qos_source_t output_source, qos_egress_map_id_t mid)
 {
   index_t qemi;

   vec_validate_init_empty (qos_mark_configs[output_source],
 			   sw_if_index, INDEX_INVALID);

   qemi = qos_egress_map_find (mid);

   if (INDEX_INVALID == qemi)
     return VNET_API_ERROR_NO_SUCH_TABLE;

   if (INDEX_INVALID == qos_mark_configs[output_source][sw_if_index])
     {
       qos_egress_map_feature_config (sw_if_index, output_source, 1);
     }

   qos_mark_configs[output_source][sw_if_index] = qemi;

   return (0);
 }

 int
 qos_mark_disable (u32 sw_if_index, qos_source_t output_source)
 {
   if (vec_len (qos_mark_configs[output_source]) < sw_if_index)
     return VNET_API_ERROR_NO_MATCHING_INTERFACE;
   if (INDEX_INVALID == qos_mark_configs[output_source][sw_if_index])
     return VNET_API_ERROR_VALUE_EXIST;

   if (INDEX_INVALID != qos_mark_configs[output_source][sw_if_index])
     {
       qos_egress_map_feature_config (sw_if_index, output_source, 0);
     }

   qos_mark_configs[output_source][sw_if_index] = INDEX_INVALID;

   return (0);
 }

 static clib_error_t *
 qos_mark_cli (vlib_main_t * vm,
 	      unformat_input_t * input, vlib_cli_command_t * cmd)
 {
   qos_egress_map_id_t map_id;
   u32 sw_if_index, qs;
   vnet_main_t *vnm;
   int rv, enable;

   vnm = vnet_get_main ();
   map_id = ~0;
   qs = 0xff;
   enable = 1;

   while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
     {
       if (unformat (input, "id %d", &map_id))
 	;
       else if (unformat (input, "disable"))
 	enable = 0;
       else if (unformat (input, "%U", unformat_qos_source, &qs))
 	;
       else if (unformat (input, "%U",
 			 unformat_vnet_sw_interface, vnm, &sw_if_index))
 	;
       else
 	break;
     }

   if (~0 == sw_if_index)
     return clib_error_return (0, "interface must be specified");
   if (0xff == qs)
     return clib_error_return (0, "output location must be specified");

   if (enable)
     rv = qos_mark_enable (sw_if_index, qs, map_id);
   else
     rv = qos_mark_disable (sw_if_index, qs);

   if (0 == rv)
     return (NULL);

   return clib_error_return (0, "Failed to map interface");
 }

 /*?
  * Apply a QoS egress mapping table to an interface for QoS marking packets
  * at the given output protocol.
  *
  * @cliexpar
  * @cliexcmd{qos egress interface GigEthernet0/9/0 id 0 output ip}
  ?*/
 /* *INDENT-OFF* */
 VLIB_CLI_COMMAND (qos_egress_map_interface_command, static) = {
   .path = "qos mark",
   .short_help = "qos mark <SOURCE> <INTERFACE> id <MAP>",
   .function = qos_mark_cli,
   .is_mp_safe = 1,
 };
 /* *INDENT-ON* */

 /*
  * fd.io coding-style-patch-verification: ON
  *
 * Local Variables:
 * eval: (c-set-style "gnu")
 * End:
 *
 */
	/*
	* Copyright (c) 2018 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.
	*/

	#include <vnet/ip/ip.h>
	#include <vnet/feature/feature.h>
	#include <vnet/qos/qos_egress_map.h>
	#include <vnet/qos/qos_mark.h>

	/**
	* per-interface vector of which MAP is used by which interface
	* for each output source
	*/
	index_t *qos_mark_configs[QOS_N_SOURCES];

	void
	qos_mark_ip_enable_disable (u32 sw_if_index, u8 enable)
	{
	vnet_feature_enable_disable ("ip6-output", "ip6-qos-mark",
	sw_if_index, enable, NULL, 0);
	vnet_feature_enable_disable ("ip4-output", "ip4-qos-mark",
	sw_if_index, enable, NULL, 0);
	}

	void
	qos_mark_vlan_enable_disable (u32 sw_if_index, u8 enable)
	{
	vnet_feature_enable_disable ("interface-output", "vlan-qos-mark",
	sw_if_index, enable, NULL, 0);
	}

	void
	qos_mark_mpls_enable_disable (u32 sw_if_index, u8 enable)
	{
	vnet_feature_enable_disable ("mpls-output", "mpls-qos-mark",
	sw_if_index, enable, NULL, 0);
	}

	static void
	qos_egress_map_feature_config (u32 sw_if_index, qos_source_t qs, u8 enable)
	{
	switch (qs)
	{
	case QOS_SOURCE_EXT:
	ASSERT (0);
	break;
	case QOS_SOURCE_VLAN:
	qos_mark_vlan_enable_disable (sw_if_index, enable);
	break;
	case QOS_SOURCE_MPLS:
	qos_mark_mpls_enable_disable (sw_if_index, enable);
	break;
	case QOS_SOURCE_IP:
	qos_mark_ip_enable_disable (sw_if_index, enable);
	break;
	}
	}

	always_inline qos_egress_map_t *
	qos_egress_map_interface (u32 sw_if_index, qos_source_t output_source)
	{
	ASSERT (vec_len (qos_mark_configs[output_source]) > sw_if_index);

	return pool_elt_at_index (qem_pool,
	qos_mark_configs[output_source][sw_if_index]);
	}

	/**
	* per-packet trace data
	*/
	typedef struct qos_mark_trace_t_
	{
	/* per-pkt trace data */
	qos_bits_t bits;
	qos_source_t input;
	u32 used;
	} qos_mark_trace_t;

	static inline uword
	qos_mark_inline (vlib_main_t * vm,
	vlib_node_runtime_t * node,
	vlib_frame_t * frame, qos_source_t output_source, int is_ip6)
	{
	u32 n_left_from, from, to_next, next_index;

	next_index = 0;
	n_left_from = frame->n_vectors;
	from = vlib_frame_vector_args (frame);

	while (n_left_from > 0)
	{
	u32 n_left_to_next;

	vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);

	while (n_left_from > 0 && n_left_to_next > 0)
	{
	qos_source_t input_source0;
	ethernet_vlan_header_t *vlan0;
	u32 sw_if_index0, next0, bi0;
	qos_egress_map_t *qem0;
	ip4_header_t *ip4_0;
	ip6_header_t *ip6_0;
	vlib_buffer_t *b0;
	qos_bits_t qos0;
	u8 *mpls_bytes_0;
	u8 eos0;

	next0 = 0;
	bi0 = from[0];
	to_next[0] = bi0;
	from += 1;
	to_next += 1;
	n_left_from -= 1;
	n_left_to_next -= 1;

	b0 = vlib_get_buffer (vm, bi0);
	sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_TX];
	input_source0 = vnet_buffer2 (b0)->qos.source;

	qem0 = qos_egress_map_interface (sw_if_index0, output_source);
	qos0 = qem0->qem_output[input_source0][vnet_buffer2 (b0)->qos.bits];

	if (PREDICT_TRUE (b0->flags & VNET_BUFFER_F_QOS_DATA_VALID))
	{
	/* there is a source of QoS recording for this packet */
	if (QOS_SOURCE_IP == output_source)
	{
	if (is_ip6)
	{
	ip6_0 = (vlib_buffer_get_current (b0) +
	vnet_buffer (b0)->ip.save_rewrite_length);

	ip6_set_traffic_class_network_order (ip6_0, qos0);
	}
	else
	{
	ip4_0 = (vlib_buffer_get_current (b0) +
	vnet_buffer (b0)->ip.save_rewrite_length);
	if (PREDICT_FALSE (qos0 != ip4_0->tos))
	{
	ip4_0->tos = qos0;
	ip4_0->checksum = ip4_header_checksum (ip4_0);
	}
	}
	}
	else if (QOS_SOURCE_MPLS == output_source)
	{
	mpls_bytes_0 = (vlib_buffer_get_current (b0) +
	vnet_buffer (b0)->mpls.save_rewrite_length);

	/* apply to all the labels in the stack */
	do
	{
	/* clear out the old COS bts */
	mpls_bytes_0[2] &= 0xf1;
	/* OR in 3 bits of the mapped value */
	mpls_bytes_0[2] \|= (qos0 & 0x7) << 1;
	eos0 = mpls_bytes_0[2] & 0x1;
	mpls_bytes_0 += 4;
	}
	while (!eos0);
	}
	else if (QOS_SOURCE_VLAN == output_source)
	{
	vlan0 = (vlib_buffer_get_current (b0) +
	sizeof (ethernet_header_t));

	ethernet_vlan_header_set_priority_net_order (vlan0, qos0);
	}
	}
	vnet_feature_next (sw_if_index0, &next0, b0);

	if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
	{
	qos_mark_trace_t *t =
	vlib_add_trace (vm, node, b0, sizeof (*t));
	t->bits = qos0;
	t->input = input_source0;
	t->used = (b0->flags & VNET_BUFFER_F_QOS_DATA_VALID);
	}

	/* verify speculative enqueue, maybe switch current next frame */
	vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
	to_next, n_left_to_next,
	bi0, next0);
	}

	vlib_put_next_frame (vm, node, next_index, n_left_to_next);
	}

	return frame->n_vectors;
	}

	/* packet trace format function */
	static u8 *
	format_qos_mark_trace (u8 * s, va_list * args)
	{
	CLIB_UNUSED (vlib_main_t * vm) = va_arg (args, vlib_main_t );
	CLIB_UNUSED (vlib_node_t * node) = va_arg (args, vlib_node_t );
	qos_mark_trace_t t = va_arg (args, qos_mark_trace_t *);

	s = format (s, "source:%U qos:%d used:%s",
	format_qos_source, t->input, t->bits, (t->used ? "yes" : "no"));

	return s;
	}

	static inline uword
	ip4_qos_mark (vlib_main_t * vm, vlib_node_runtime_t * node,
	vlib_frame_t * frame)
	{
	return (qos_mark_inline (vm, node, frame, QOS_SOURCE_IP, 0));
	}

	static inline uword
	ip6_qos_mark (vlib_main_t * vm, vlib_node_runtime_t * node,
	vlib_frame_t * frame)
	{
	return (qos_mark_inline (vm, node, frame, QOS_SOURCE_IP, 1));
	}

	static inline uword
	mpls_qos_mark (vlib_main_t * vm, vlib_node_runtime_t * node,
	vlib_frame_t * frame)
	{
	return (qos_mark_inline (vm, node, frame, QOS_SOURCE_MPLS, 0));
	}

	static inline uword
	vlan_qos_mark (vlib_main_t * vm, vlib_node_runtime_t * node,
	vlib_frame_t * frame)
	{
	return (qos_mark_inline (vm, node, frame, QOS_SOURCE_VLAN, 0));
	}

	/* INDENT-OFF */
	VLIB_REGISTER_NODE (ip4_qos_mark_node) = {
	.function = ip4_qos_mark,
	.name = "ip4-qos-mark",
	.vector_size = sizeof (u32),
	.format_trace = format_qos_mark_trace,
	.type = VLIB_NODE_TYPE_INTERNAL,

	.n_errors = 0,
	.n_next_nodes = 1,

	.next_nodes = {
	[0] = "ip4-drop",
	},
	};

	VLIB_NODE_FUNCTION_MULTIARCH (ip4_qos_mark_node, ip4_qos_mark);

	VNET_FEATURE_INIT (ip4_qos_mark_node, static) = {
	.arc_name = "ip4-output",
	.node_name = "ip4-qos-mark",
	};

	VLIB_REGISTER_NODE (ip6_qos_mark_node) = {
	.function = ip6_qos_mark,
	.name = "ip6-qos-mark",
	.vector_size = sizeof (u32),
	.format_trace = format_qos_mark_trace,
	.type = VLIB_NODE_TYPE_INTERNAL,

	.n_errors = 0,
	.n_next_nodes = 1,

	.next_nodes = {
	[0] = "ip6-drop",
	},
	};

	VLIB_NODE_FUNCTION_MULTIARCH (ip6_qos_mark_node, ip6_qos_mark);

	VNET_FEATURE_INIT (ip6_qos_mark_node, static) = {
	.arc_name = "ip6-output",
	.node_name = "ip6-qos-mark",
	};

	VLIB_REGISTER_NODE (mpls_qos_mark_node) = {
	.function = mpls_qos_mark,
	.name = "mpls-qos-mark",
	.vector_size = sizeof (u32),
	.format_trace = format_qos_mark_trace,
	.type = VLIB_NODE_TYPE_INTERNAL,

	.n_errors = 0,
	.n_next_nodes = 1,

	.next_nodes = {
	[0] = "mpls-drop",
	},
	};

	VLIB_NODE_FUNCTION_MULTIARCH (mpls_qos_mark_node, mpls_qos_mark);

	VNET_FEATURE_INIT (mpls_qos_mark_node, static) = {
	.arc_name = "mpls-output",
	.node_name = "mpls-qos-mark",
	};
	VLIB_REGISTER_NODE (vlan_qos_mark_node) = {
	.function = vlan_qos_mark,
	.name = "vlan-qos-mark",
	.vector_size = sizeof (u32),
	.format_trace = format_qos_mark_trace,
	.type = VLIB_NODE_TYPE_INTERNAL,

	.n_errors = 0,
	.n_next_nodes = 1,

	.next_nodes = {
	[0] = "error-drop",
	},
	};

	VLIB_NODE_FUNCTION_MULTIARCH (vlan_qos_mark_node, vlan_qos_mark);

	VNET_FEATURE_INIT (vlan_qos_mark_node, static) = {
	.arc_name = "interface-output",
	.node_name = "vlan-qos-mark",
	};
	/* INDENT-ON */

	int
	qos_mark_enable (u32 sw_if_index,
	qos_source_t output_source, qos_egress_map_id_t mid)
	{
	index_t qemi;

	vec_validate_init_empty (qos_mark_configs[output_source],
	sw_if_index, INDEX_INVALID);

	qemi = qos_egress_map_find (mid);

	if (INDEX_INVALID == qemi)
	return VNET_API_ERROR_NO_SUCH_TABLE;

	if (INDEX_INVALID == qos_mark_configs[output_source][sw_if_index])
	{
	qos_egress_map_feature_config (sw_if_index, output_source, 1);
	}

	qos_mark_configs[output_source][sw_if_index] = qemi;

	return (0);
	}

	int
	qos_mark_disable (u32 sw_if_index, qos_source_t output_source)
	{
	if (vec_len (qos_mark_configs[output_source]) < sw_if_index)
	return VNET_API_ERROR_NO_MATCHING_INTERFACE;
	if (INDEX_INVALID == qos_mark_configs[output_source][sw_if_index])
	return VNET_API_ERROR_VALUE_EXIST;

	if (INDEX_INVALID != qos_mark_configs[output_source][sw_if_index])
	{
	qos_egress_map_feature_config (sw_if_index, output_source, 0);
	}

	qos_mark_configs[output_source][sw_if_index] = INDEX_INVALID;

	return (0);
	}

	static clib_error_t *
	qos_mark_cli (vlib_main_t * vm,
	unformat_input_t * input, vlib_cli_command_t * cmd)
	{
	qos_egress_map_id_t map_id;
	u32 sw_if_index, qs;
	vnet_main_t *vnm;
	int rv, enable;

	vnm = vnet_get_main ();
	map_id = ~0;
	qs = 0xff;
	enable = 1;

	while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
	{
	if (unformat (input, "id %d", &map_id))
	;
	else if (unformat (input, "disable"))
	enable = 0;
	else if (unformat (input, "%U", unformat_qos_source, &qs))
	;
	else if (unformat (input, "%U",
	unformat_vnet_sw_interface, vnm, &sw_if_index))
	;
	else
	break;
	}

	if (~0 == sw_if_index)
	return clib_error_return (0, "interface must be specified");
	if (0xff == qs)
	return clib_error_return (0, "output location must be specified");

	if (enable)
	rv = qos_mark_enable (sw_if_index, qs, map_id);
	else
	rv = qos_mark_disable (sw_if_index, qs);

	if (0 == rv)
	return (NULL);

	return clib_error_return (0, "Failed to map interface");
	}

	/*?
	* Apply a QoS egress mapping table to an interface for QoS marking packets
	* at the given output protocol.
	*
	* @cliexpar
	* @cliexcmd{qos egress interface GigEthernet0/9/0 id 0 output ip}
	?*/
	/* INDENT-OFF */
	VLIB_CLI_COMMAND (qos_egress_map_interface_command, static) = {
	.path = "qos mark",
	.short_help = "qos mark <SOURCE> <INTERFACE> id <MAP>",
	.function = qos_mark_cli,
	.is_mp_safe = 1,
	};
	/* INDENT-ON */

	/*
	* fd.io coding-style-patch-verification: ON
	*
	* Local Variables:
	* eval: (c-set-style "gnu")
	* End:
	*
	*/