src/vnet/dpo/l2_bridge_dpo.c - fdio/vpp - Gitiles

 /*
  * Copyright (c) 2016 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/dpo/l2_bridge_dpo.h>
 #include <vnet/fib/fib_node.h>
 #include <vnet/ethernet/ethernet.h>

 /*
  * The 'DB' of L2 bridge DPOs.
  * There is only one per-interface, so this is a per-interface vector
  */
 static index_t *l2_bridge_dpo_db;

 static l2_bridge_dpo_t *
 l2_bridge_dpo_alloc (void)
 {
     l2_bridge_dpo_t *l2b;

     pool_get(l2_bridge_dpo_pool, l2b);

     return (l2b);
 }

 static inline l2_bridge_dpo_t *
 l2_bridge_dpo_get_from_dpo (const dpo_id_t *dpo)
 {
     ASSERT(DPO_L2_BRIDGE == dpo->dpoi_type);

     return (l2_bridge_dpo_get(dpo->dpoi_index));
 }

 static inline index_t
 l2_bridge_dpo_get_index (l2_bridge_dpo_t *l2b)
 {
     return (l2b - l2_bridge_dpo_pool);
 }

 static void
 l2_bridge_dpo_lock (dpo_id_t *dpo)
 {
     l2_bridge_dpo_t *l2b;

     l2b = l2_bridge_dpo_get_from_dpo(dpo);
     l2b->l2b_locks++;
 }

 static void
 l2_bridge_dpo_unlock (dpo_id_t *dpo)
 {
     l2_bridge_dpo_t *l2b;

     l2b = l2_bridge_dpo_get_from_dpo(dpo);
     l2b->l2b_locks--;

     if (0 == l2b->l2b_locks)
     {
         l2_bridge_dpo_db[l2b->l2b_sw_if_index] = INDEX_INVALID;
         pool_put(l2_bridge_dpo_pool, l2b);
     }
 }

 /*
  * l2_bridge_dpo_add_or_lock
  *
  * Add/create and lock a new or lock an existing for the L2 Bridge
  * on the interface given
  */
 void
 l2_bridge_dpo_add_or_lock (u32 sw_if_index,
                            dpo_id_t *dpo)
 {
     l2_bridge_dpo_t *l2b;

     vec_validate_init_empty(l2_bridge_dpo_db,
                             sw_if_index,
                             INDEX_INVALID);

     if (INDEX_INVALID == l2_bridge_dpo_db[sw_if_index])
     {
         l2b = l2_bridge_dpo_alloc();

         l2b->l2b_sw_if_index = sw_if_index;

         l2_bridge_dpo_db[sw_if_index] =
             l2_bridge_dpo_get_index(l2b);
     }
     else
     {
         l2b = l2_bridge_dpo_get(l2_bridge_dpo_db[sw_if_index]);
     }

     dpo_set(dpo, DPO_L2_BRIDGE, DPO_PROTO_ETHERNET, l2_bridge_dpo_get_index(l2b));
 }


 static clib_error_t *
 l2_bridge_dpo_interface_state_change (vnet_main_t * vnm,
                                       u32 sw_if_index,
                                       u32 flags)
 {
     /*
      */
     return (NULL);
 }

 VNET_SW_INTERFACE_ADMIN_UP_DOWN_FUNCTION(
     l2_bridge_dpo_interface_state_change);

 /**
  * @brief Registered callback for HW interface state changes
  */
 static clib_error_t *
 l2_bridge_dpo_hw_interface_state_change (vnet_main_t * vnm,
                                          u32 hw_if_index,
                                          u32 flags)
 {
     return (NULL);
 }

 VNET_HW_INTERFACE_LINK_UP_DOWN_FUNCTION(
     l2_bridge_dpo_hw_interface_state_change);

 static clib_error_t *
 l2_bridge_dpo_interface_delete (vnet_main_t * vnm,
                                 u32 sw_if_index,
                                 u32 is_add)
 {
     return (NULL);
 }

 VNET_SW_INTERFACE_ADD_DEL_FUNCTION(
     l2_bridge_dpo_interface_delete);

 u8*
 format_l2_bridge_dpo (u8* s, va_list *ap)
 {
     index_t index = va_arg(*ap, index_t);
     CLIB_UNUSED(u32 indent) = va_arg(*ap, u32);
     vnet_main_t * vnm = vnet_get_main();
     l2_bridge_dpo_t *l2b = l2_bridge_dpo_get(index);

     return (format(s, "l2-bridge-%U-dpo",
                    format_vnet_sw_interface_name,
                    vnm,
                    vnet_get_sw_interface(vnm, l2b->l2b_sw_if_index)));
 }

 static void
 l2_bridge_dpo_mem_show (void)
 {
     fib_show_memory_usage("L2-bridge",
                           pool_elts(l2_bridge_dpo_pool),
                           pool_len(l2_bridge_dpo_pool),
                           sizeof(l2_bridge_dpo_t));
 }


 const static dpo_vft_t l2_bridge_dpo_vft = {
     .dv_lock = l2_bridge_dpo_lock,
     .dv_unlock = l2_bridge_dpo_unlock,
     .dv_format = format_l2_bridge_dpo,
     .dv_mem_show = l2_bridge_dpo_mem_show,
 };

 /**
  * @brief The per-protocol VLIB graph nodes that are assigned to a glean
  *        object.
  *
  * this means that these graph nodes are ones from which a glean is the
  * parent object in the DPO-graph.
  */
 const static char* const l2_bridge_dpo_l2_nodes[] =
 {
     "l2-bridge-dpo",
     NULL,
 };

 const static char* const * const l2_bridge_dpo_nodes[DPO_PROTO_NUM] =
 {
     [DPO_PROTO_ETHERNET]  = l2_bridge_dpo_l2_nodes,
 };

 void
 l2_bridge_dpo_module_init (void)
 {
     dpo_register(DPO_L2_BRIDGE,
                  &l2_bridge_dpo_vft,
                  l2_bridge_dpo_nodes);
 }

 /**
  * @brief Interface DPO trace data
  */
 typedef struct l2_bridge_dpo_trace_t_
 {
     u32 sw_if_index;
 } l2_bridge_dpo_trace_t;

 typedef enum l2_bridge_dpo_next_t_
 {
     L2_BRIDGE_DPO_DROP = 0,
     L2_BRIDGE_DPO_OUTPUT = 1,
 } l2_bridge_dpo_next_t;

 always_inline uword
 l2_bridge_dpo_inline (vlib_main_t * vm,
                       vlib_node_runtime_t * node,
                       vlib_frame_t * from_frame)
 {
     u32 n_left_from, next_index, * from, * to_next;

     from = vlib_frame_vector_args (from_frame);
     n_left_from = from_frame->n_vectors;

     next_index = node->cached_next_index;

     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 >= 4 && n_left_to_next > 2)
         {
             const l2_bridge_dpo_t *l2b0, *l2b1;
             u32 bi0, l2bi0, bi1, l2bi1;
             vlib_buffer_t *b0, *b1;
             u8 len0, len1;

             bi0 = from[0];
             to_next[0] = bi0;
             bi1 = from[1];
             to_next[1] = bi1;
             from += 2;
             to_next += 2;
             n_left_from -= 2;
             n_left_to_next -= 2;

             b0 = vlib_get_buffer (vm, bi0);
             b1 = vlib_get_buffer (vm, bi1);

             l2bi0 = vnet_buffer(b0)->ip.adj_index[VLIB_TX];
             l2bi1 = vnet_buffer(b1)->ip.adj_index[VLIB_TX];
             l2b0 = l2_bridge_dpo_get(l2bi0);
             l2b1 = l2_bridge_dpo_get(l2bi1);

             vnet_buffer(b0)->sw_if_index[VLIB_TX] = l2b0->l2b_sw_if_index;
             vnet_buffer(b1)->sw_if_index[VLIB_TX] = l2b1->l2b_sw_if_index;

             len0 = ((u8*)vlib_buffer_get_current(b0) -
                     (u8*)ethernet_buffer_get_header(b0));
             len1 = ((u8*)vlib_buffer_get_current(b1) -
                     (u8*)ethernet_buffer_get_header(b1));
             vnet_buffer(b0)->l2.l2_len = len0;
             vnet_buffer(b1)->l2.l2_len = len1;

             vlib_buffer_advance(b0, -len0);
             vlib_buffer_advance(b1, -len1);

             if (PREDICT_FALSE(b0->flags & VLIB_BUFFER_IS_TRACED))
             {
                 l2_bridge_dpo_trace_t *tr0;

                 tr0 = vlib_add_trace (vm, node, b0, sizeof (*tr0));
                 tr0->sw_if_index = l2b0->l2b_sw_if_index;
             }
             if (PREDICT_FALSE(b1->flags & VLIB_BUFFER_IS_TRACED))
             {
                 l2_bridge_dpo_trace_t *tr1;

                 tr1 = vlib_add_trace (vm, node, b1, sizeof (*tr1));
                 tr1->sw_if_index = l2b1->l2b_sw_if_index;
             }

             vlib_validate_buffer_enqueue_x2(vm, node, next_index, to_next,
                                             n_left_to_next, bi0, bi1,
                                             L2_BRIDGE_DPO_OUTPUT,
                                             L2_BRIDGE_DPO_OUTPUT);
         }

         while (n_left_from > 0 && n_left_to_next > 0)
         {
             const l2_bridge_dpo_t * l2b0;
             vlib_buffer_t * b0;
             u32 bi0, l2bi0;
             u8 len0;

             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);

             l2bi0 = vnet_buffer(b0)->ip.adj_index[VLIB_TX];
             l2b0 = l2_bridge_dpo_get(l2bi0);

             vnet_buffer(b0)->sw_if_index[VLIB_TX] = l2b0->l2b_sw_if_index;

             /*
              * take that, and rewind it back...
              */
             len0 = ((u8*)vlib_buffer_get_current(b0) -
                     (u8*)ethernet_buffer_get_header(b0));
             vnet_buffer(b0)->l2.l2_len = len0;
             vlib_buffer_advance(b0, -len0);

             if (PREDICT_FALSE(b0->flags & VLIB_BUFFER_IS_TRACED))
             {
                 l2_bridge_dpo_trace_t *tr;

                 tr = vlib_add_trace (vm, node, b0, sizeof (*tr));
                 tr->sw_if_index = l2b0->l2b_sw_if_index;
             }

             vlib_validate_buffer_enqueue_x1(vm, node, next_index, to_next,
                                             n_left_to_next, bi0,
                                             L2_BRIDGE_DPO_OUTPUT);
         }
         vlib_put_next_frame (vm, node, next_index, n_left_to_next);
     }
     return from_frame->n_vectors;
 }

 static u8 *
 format_l2_bridge_dpo_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 *);
     l2_bridge_dpo_trace_t * t = va_arg (*args, l2_bridge_dpo_trace_t *);
     uword indent = format_get_indent (s);
     s = format (s, "%U sw_if_index:%d",
                 format_white_space, indent,
                 t->sw_if_index);
     return s;
 }

 static uword
 l2_bridge_dpo_l2 (vlib_main_t * vm,
                   vlib_node_runtime_t * node,
                   vlib_frame_t * from_frame)
 {
     return (l2_bridge_dpo_inline(vm, node, from_frame));
 }


 VLIB_REGISTER_NODE (l2_bridge_dpo_l2_node) = {
     .function = l2_bridge_dpo_l2,
     .name = "l2-bridge-dpo",
     .vector_size = sizeof (u32),
     .format_trace = format_l2_bridge_dpo_trace,

     .n_next_nodes = 2,
     .next_nodes = {
         [L2_BRIDGE_DPO_DROP] = "error-drop",
         [L2_BRIDGE_DPO_OUTPUT] = "l2-output",
     },
 };

 VLIB_NODE_FUNCTION_MULTIARCH (l2_bridge_dpo_l2_node,
                               l2_bridge_dpo_l2)
	/*
	* Copyright (c) 2016 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/dpo/l2_bridge_dpo.h>
	#include <vnet/fib/fib_node.h>
	#include <vnet/ethernet/ethernet.h>

	/*
	* The 'DB' of L2 bridge DPOs.
	* There is only one per-interface, so this is a per-interface vector
	*/
	static index_t *l2_bridge_dpo_db;

	static l2_bridge_dpo_t *
	l2_bridge_dpo_alloc (void)
	{
	l2_bridge_dpo_t *l2b;

	pool_get(l2_bridge_dpo_pool, l2b);

	return (l2b);
	}

	static inline l2_bridge_dpo_t *
	l2_bridge_dpo_get_from_dpo (const dpo_id_t *dpo)
	{
	ASSERT(DPO_L2_BRIDGE == dpo->dpoi_type);

	return (l2_bridge_dpo_get(dpo->dpoi_index));
	}

	static inline index_t
	l2_bridge_dpo_get_index (l2_bridge_dpo_t *l2b)
	{
	return (l2b - l2_bridge_dpo_pool);
	}

	static void
	l2_bridge_dpo_lock (dpo_id_t *dpo)
	{
	l2_bridge_dpo_t *l2b;

	l2b = l2_bridge_dpo_get_from_dpo(dpo);
	l2b->l2b_locks++;
	}

	static void
	l2_bridge_dpo_unlock (dpo_id_t *dpo)
	{
	l2_bridge_dpo_t *l2b;

	l2b = l2_bridge_dpo_get_from_dpo(dpo);
	l2b->l2b_locks--;

	if (0 == l2b->l2b_locks)
	{
	l2_bridge_dpo_db[l2b->l2b_sw_if_index] = INDEX_INVALID;
	pool_put(l2_bridge_dpo_pool, l2b);
	}
	}

	/*
	* l2_bridge_dpo_add_or_lock
	*
	* Add/create and lock a new or lock an existing for the L2 Bridge
	* on the interface given
	*/
	void
	l2_bridge_dpo_add_or_lock (u32 sw_if_index,
	dpo_id_t *dpo)
	{
	l2_bridge_dpo_t *l2b;

	vec_validate_init_empty(l2_bridge_dpo_db,
	sw_if_index,
	INDEX_INVALID);

	if (INDEX_INVALID == l2_bridge_dpo_db[sw_if_index])
	{
	l2b = l2_bridge_dpo_alloc();

	l2b->l2b_sw_if_index = sw_if_index;

	l2_bridge_dpo_db[sw_if_index] =
	l2_bridge_dpo_get_index(l2b);
	}
	else
	{
	l2b = l2_bridge_dpo_get(l2_bridge_dpo_db[sw_if_index]);
	}

	dpo_set(dpo, DPO_L2_BRIDGE, DPO_PROTO_ETHERNET, l2_bridge_dpo_get_index(l2b));
	}


	static clib_error_t *
	l2_bridge_dpo_interface_state_change (vnet_main_t * vnm,
	u32 sw_if_index,
	u32 flags)
	{
	/*
	*/
	return (NULL);
	}

	VNET_SW_INTERFACE_ADMIN_UP_DOWN_FUNCTION(
	l2_bridge_dpo_interface_state_change);

	/**
	* @brief Registered callback for HW interface state changes
	*/
	static clib_error_t *
	l2_bridge_dpo_hw_interface_state_change (vnet_main_t * vnm,
	u32 hw_if_index,
	u32 flags)
	{
	return (NULL);
	}

	VNET_HW_INTERFACE_LINK_UP_DOWN_FUNCTION(
	l2_bridge_dpo_hw_interface_state_change);

	static clib_error_t *
	l2_bridge_dpo_interface_delete (vnet_main_t * vnm,
	u32 sw_if_index,
	u32 is_add)
	{
	return (NULL);
	}

	VNET_SW_INTERFACE_ADD_DEL_FUNCTION(
	l2_bridge_dpo_interface_delete);

	u8*
	format_l2_bridge_dpo (u8* s, va_list *ap)
	{
	index_t index = va_arg(*ap, index_t);
	CLIB_UNUSED(u32 indent) = va_arg(*ap, u32);
	vnet_main_t * vnm = vnet_get_main();
	l2_bridge_dpo_t *l2b = l2_bridge_dpo_get(index);

	return (format(s, "l2-bridge-%U-dpo",
	format_vnet_sw_interface_name,
	vnm,
	vnet_get_sw_interface(vnm, l2b->l2b_sw_if_index)));
	}

	static void
	l2_bridge_dpo_mem_show (void)
	{
	fib_show_memory_usage("L2-bridge",
	pool_elts(l2_bridge_dpo_pool),
	pool_len(l2_bridge_dpo_pool),
	sizeof(l2_bridge_dpo_t));
	}


	const static dpo_vft_t l2_bridge_dpo_vft = {
	.dv_lock = l2_bridge_dpo_lock,
	.dv_unlock = l2_bridge_dpo_unlock,
	.dv_format = format_l2_bridge_dpo,
	.dv_mem_show = l2_bridge_dpo_mem_show,
	};

	/**
	* @brief The per-protocol VLIB graph nodes that are assigned to a glean
	* object.
	*
	* this means that these graph nodes are ones from which a glean is the
	* parent object in the DPO-graph.
	*/
	const static char* const l2_bridge_dpo_l2_nodes[] =
	{
	"l2-bridge-dpo",
	NULL,
	};

	const static char* const * const l2_bridge_dpo_nodes[DPO_PROTO_NUM] =
	{
	[DPO_PROTO_ETHERNET] = l2_bridge_dpo_l2_nodes,
	};

	void
	l2_bridge_dpo_module_init (void)
	{
	dpo_register(DPO_L2_BRIDGE,
	&l2_bridge_dpo_vft,
	l2_bridge_dpo_nodes);
	}

	/**
	* @brief Interface DPO trace data
	*/
	typedef struct l2_bridge_dpo_trace_t_
	{
	u32 sw_if_index;
	} l2_bridge_dpo_trace_t;

	typedef enum l2_bridge_dpo_next_t_
	{
	L2_BRIDGE_DPO_DROP = 0,
	L2_BRIDGE_DPO_OUTPUT = 1,
	} l2_bridge_dpo_next_t;

	always_inline uword
	l2_bridge_dpo_inline (vlib_main_t * vm,
	vlib_node_runtime_t * node,
	vlib_frame_t * from_frame)
	{
	u32 n_left_from, next_index, * from, * to_next;

	from = vlib_frame_vector_args (from_frame);
	n_left_from = from_frame->n_vectors;

	next_index = node->cached_next_index;

	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 >= 4 && n_left_to_next > 2)
	{
	const l2_bridge_dpo_t l2b0, l2b1;
	u32 bi0, l2bi0, bi1, l2bi1;
	vlib_buffer_t b0, b1;
	u8 len0, len1;

	bi0 = from[0];
	to_next[0] = bi0;
	bi1 = from[1];
	to_next[1] = bi1;
	from += 2;
	to_next += 2;
	n_left_from -= 2;
	n_left_to_next -= 2;

	b0 = vlib_get_buffer (vm, bi0);
	b1 = vlib_get_buffer (vm, bi1);

	l2bi0 = vnet_buffer(b0)->ip.adj_index[VLIB_TX];
	l2bi1 = vnet_buffer(b1)->ip.adj_index[VLIB_TX];
	l2b0 = l2_bridge_dpo_get(l2bi0);
	l2b1 = l2_bridge_dpo_get(l2bi1);

	vnet_buffer(b0)->sw_if_index[VLIB_TX] = l2b0->l2b_sw_if_index;
	vnet_buffer(b1)->sw_if_index[VLIB_TX] = l2b1->l2b_sw_if_index;

	len0 = ((u8*)vlib_buffer_get_current(b0) -
	(u8*)ethernet_buffer_get_header(b0));
	len1 = ((u8*)vlib_buffer_get_current(b1) -
	(u8*)ethernet_buffer_get_header(b1));
	vnet_buffer(b0)->l2.l2_len = len0;
	vnet_buffer(b1)->l2.l2_len = len1;

	vlib_buffer_advance(b0, -len0);
	vlib_buffer_advance(b1, -len1);

	if (PREDICT_FALSE(b0->flags & VLIB_BUFFER_IS_TRACED))
	{
	l2_bridge_dpo_trace_t *tr0;

	tr0 = vlib_add_trace (vm, node, b0, sizeof (*tr0));
	tr0->sw_if_index = l2b0->l2b_sw_if_index;
	}
	if (PREDICT_FALSE(b1->flags & VLIB_BUFFER_IS_TRACED))
	{
	l2_bridge_dpo_trace_t *tr1;

	tr1 = vlib_add_trace (vm, node, b1, sizeof (*tr1));
	tr1->sw_if_index = l2b1->l2b_sw_if_index;
	}

	vlib_validate_buffer_enqueue_x2(vm, node, next_index, to_next,
	n_left_to_next, bi0, bi1,
	L2_BRIDGE_DPO_OUTPUT,
	L2_BRIDGE_DPO_OUTPUT);
	}

	while (n_left_from > 0 && n_left_to_next > 0)
	{
	const l2_bridge_dpo_t * l2b0;
	vlib_buffer_t * b0;
	u32 bi0, l2bi0;
	u8 len0;

	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);

	l2bi0 = vnet_buffer(b0)->ip.adj_index[VLIB_TX];
	l2b0 = l2_bridge_dpo_get(l2bi0);

	vnet_buffer(b0)->sw_if_index[VLIB_TX] = l2b0->l2b_sw_if_index;

	/*
	* take that, and rewind it back...
	*/
	len0 = ((u8*)vlib_buffer_get_current(b0) -
	(u8*)ethernet_buffer_get_header(b0));
	vnet_buffer(b0)->l2.l2_len = len0;
	vlib_buffer_advance(b0, -len0);

	if (PREDICT_FALSE(b0->flags & VLIB_BUFFER_IS_TRACED))
	{
	l2_bridge_dpo_trace_t *tr;

	tr = vlib_add_trace (vm, node, b0, sizeof (*tr));
	tr->sw_if_index = l2b0->l2b_sw_if_index;
	}

	vlib_validate_buffer_enqueue_x1(vm, node, next_index, to_next,
	n_left_to_next, bi0,
	L2_BRIDGE_DPO_OUTPUT);
	}
	vlib_put_next_frame (vm, node, next_index, n_left_to_next);
	}
	return from_frame->n_vectors;
	}

	static u8 *
	format_l2_bridge_dpo_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 );
	l2_bridge_dpo_trace_t * t = va_arg (args, l2_bridge_dpo_trace_t );
	uword indent = format_get_indent (s);
	s = format (s, "%U sw_if_index:%d",
	format_white_space, indent,
	t->sw_if_index);
	return s;
	}

	static uword
	l2_bridge_dpo_l2 (vlib_main_t * vm,
	vlib_node_runtime_t * node,
	vlib_frame_t * from_frame)
	{
	return (l2_bridge_dpo_inline(vm, node, from_frame));
	}


	VLIB_REGISTER_NODE (l2_bridge_dpo_l2_node) = {
	.function = l2_bridge_dpo_l2,
	.name = "l2-bridge-dpo",
	.vector_size = sizeof (u32),
	.format_trace = format_l2_bridge_dpo_trace,

	.n_next_nodes = 2,
	.next_nodes = {
	[L2_BRIDGE_DPO_DROP] = "error-drop",
	[L2_BRIDGE_DPO_OUTPUT] = "l2-output",
	},
	};

	VLIB_NODE_FUNCTION_MULTIARCH (l2_bridge_dpo_l2_node,
	l2_bridge_dpo_l2)