decap.c

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/*
 * Copyright (c) 2017 SUSE LLC.
 * 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 <vlib/vlib.h>
#include <vnet/pg/pg.h>
#include <vnet/geneve/geneve.h>

typedef struct
{
  u32 next_index;
  u32 tunnel_index;
  u32 error;
  u32 vni_rsvd;
} geneve_rx_trace_t;

static u8 *
format_geneve_rx_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 *);
  geneve_rx_trace_t *t = va_arg (*args, geneve_rx_trace_t *);

  if (t->tunnel_index != ~0)
    {
      s =
        format (s,
                "GENEVE decap from geneve_tunnel%d vni %d next %d error %d",
                t->tunnel_index, t->vni_rsvd, t->next_index, t->error);
    }
  else
    {
      s = format (s, "GENEVE decap error - tunnel for vni %d does not exist",
                  t->vni_rsvd);
    }
  return s;
}

always_inline u32
validate_geneve_fib (vlib_buffer_t * b, geneve_tunnel_t * t, u32 is_ip4)
{
  u32 fib_index, sw_if_index;

  sw_if_index = vnet_buffer (b)->sw_if_index[VLIB_RX];

  if (is_ip4)
    fib_index = (vnet_buffer (b)->sw_if_index[VLIB_TX] == (u32) ~ 0) ?
      vec_elt (ip4_main.fib_index_by_sw_if_index, sw_if_index) :
      vnet_buffer (b)->sw_if_index[VLIB_TX];
  else
    fib_index = (vnet_buffer (b)->sw_if_index[VLIB_TX] == (u32) ~ 0) ?
      vec_elt (ip6_main.fib_index_by_sw_if_index, sw_if_index) :
      vnet_buffer (b)->sw_if_index[VLIB_TX];

  return (fib_index == t->encap_fib_index);
}

always_inline uword
geneve_input (vlib_main_t * vm,
              vlib_node_runtime_t * node,
              vlib_frame_t * from_frame, u32 is_ip4)
{
  u32 n_left_from, next_index, *from, *to_next;
  geneve_main_t *vxm = &geneve_main;
  vnet_main_t *vnm = vxm->vnet_main;
  vnet_interface_main_t *im = &vnm->interface_main;
  u32 last_tunnel_index = ~0;
  geneve4_tunnel_key_t last_key4;
  geneve6_tunnel_key_t last_key6;
  u32 pkts_decapsulated = 0;
  u32 thread_index = vm->thread_index;
  u32 stats_sw_if_index, stats_n_packets, stats_n_bytes;
  vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b = bufs;

  if (is_ip4)
    last_key4.as_u64 = ~0;
  else
    clib_memset (&last_key6, 0xff, sizeof (last_key6));

  from = vlib_frame_vector_args (from_frame);
  n_left_from = from_frame->n_vectors;
  vlib_get_buffers (vm, from, bufs, n_left_from);

  next_index = node->cached_next_index;
  stats_sw_if_index = node->runtime_data[0];
  stats_n_packets = stats_n_bytes = 0;

  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)
        {
          u32 bi0, bi1;
          vlib_buffer_t *b0, *b1;
          u32 next0, next1;
          ip4_header_t *ip4_0, *ip4_1;
          ip6_header_t *ip6_0, *ip6_1;
          geneve_header_t *geneve0, *geneve1;
          uword *p0, *p1;
          u32 tunnel_index0, tunnel_index1;
          geneve_tunnel_t *t0, *t1, *mt0 = NULL, *mt1 = NULL;
          geneve4_tunnel_key_t key4_0, key4_1;
          geneve6_tunnel_key_t key6_0, key6_1;
          u32 error0, error1;
          u32 sw_if_index0, sw_if_index1, len0, len1;

          /* Prefetch next iteration. */
          {
            vlib_prefetch_buffer_header (b[2], LOAD);
            vlib_prefetch_buffer_header (b[3], LOAD);

            CLIB_PREFETCH (b[2]->data, 2 * CLIB_CACHE_LINE_BYTES, LOAD);
            CLIB_PREFETCH (b[3]->data, 2 * CLIB_CACHE_LINE_BYTES, LOAD);
          }

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

          b0 = b[0];
          b1 = b[1];
          b += 2;

          /* udp leaves current_data pointing at the geneve header */
          geneve0 = vlib_buffer_get_current (b0);
          geneve1 = vlib_buffer_get_current (b1);

          vnet_geneve_hdr_1word_ntoh (geneve0);
          vnet_geneve_hdr_1word_ntoh (geneve1);

          if (is_ip4)
            {
              vlib_buffer_advance
                (b0, -(word) (sizeof (udp_header_t) + sizeof (ip4_header_t)));
              vlib_buffer_advance
                (b1, -(word) (sizeof (udp_header_t) + sizeof (ip4_header_t)));
              ip4_0 = vlib_buffer_get_current (b0);
              ip4_1 = vlib_buffer_get_current (b1);
            }
          else
            {
              vlib_buffer_advance
                (b0, -(word) (sizeof (udp_header_t) + sizeof (ip6_header_t)));
              vlib_buffer_advance
                (b1, -(word) (sizeof (udp_header_t) + sizeof (ip6_header_t)));
              ip6_0 = vlib_buffer_get_current (b0);
              ip6_1 = vlib_buffer_get_current (b1);
            }

          /* pop (ip, udp, geneve) */
          if (is_ip4)
            {
              vlib_buffer_advance (b0,
                                   sizeof (*ip4_0) + sizeof (udp_header_t) +
                                   GENEVE_BASE_HEADER_LENGTH +
                                   vnet_get_geneve_options_len (geneve0));
              vlib_buffer_advance (b1,
                                   sizeof (*ip4_1) + sizeof (udp_header_t) +
                                   GENEVE_BASE_HEADER_LENGTH +
                                   vnet_get_geneve_options_len (geneve1));
            }
          else
            {
              vlib_buffer_advance (b0,
                                   sizeof (*ip6_0) + sizeof (udp_header_t) +
                                   GENEVE_BASE_HEADER_LENGTH +
                                   vnet_get_geneve_options_len (geneve0));
              vlib_buffer_advance (b1,
                                   sizeof (*ip6_1) + sizeof (udp_header_t) +
                                   GENEVE_BASE_HEADER_LENGTH +
                                   vnet_get_geneve_options_len (geneve1));
            }

          tunnel_index0 = ~0;
          error0 = 0;

          tunnel_index1 = ~0;
          error1 = 0;

          if (PREDICT_FALSE
              (vnet_get_geneve_version (geneve0) != GENEVE_VERSION))
            {
              error0 = GENEVE_ERROR_BAD_FLAGS;
              next0 = GENEVE_INPUT_NEXT_DROP;
              goto trace0;
            }
#if SUPPORT_OPTIONS_HEADER==1
          if (PREDICT_FALSE (vnet_get_geneve_critical_bit (geneve0) == 1))
            {
              error0 = GENEVE_ERROR_BAD_FLAGS;
              next0 = GENEVE_INPUT_NEXT_DROP;
              goto trace0;
            }
#endif
          if (is_ip4)
            {
              key4_0.remote = ip4_0->src_address.as_u32;
              key4_0.vni = vnet_get_geneve_vni_network_order (geneve0);

              /* Make sure GENEVE tunnel exist according to packet SIP and VNI */
              if (PREDICT_FALSE (key4_0.as_u64 != last_key4.as_u64))
                {
                  p0 = hash_get (vxm->geneve4_tunnel_by_key, key4_0.as_u64);
                  if (PREDICT_FALSE (p0 == NULL))
                    {
                      error0 = GENEVE_ERROR_NO_SUCH_TUNNEL;
                      next0 = GENEVE_INPUT_NEXT_DROP;
                      goto trace0;
                    }
                  last_key4.as_u64 = key4_0.as_u64;
                  tunnel_index0 = last_tunnel_index = p0[0];
                }
              else
                tunnel_index0 = last_tunnel_index;
              t0 = pool_elt_at_index (vxm->tunnels, tunnel_index0);

              /* Validate GENEVE tunnel encap-fib index against packet */
              if (PREDICT_FALSE (validate_geneve_fib (b0, t0, is_ip4) == 0))
                {
                  error0 = GENEVE_ERROR_NO_SUCH_TUNNEL;
                  next0 = GENEVE_INPUT_NEXT_DROP;
                  goto trace0;
                }

              /* Validate GENEVE tunnel SIP against packet DIP */
              if (PREDICT_TRUE
                  (ip4_0->dst_address.as_u32 == t0->local.ip4.as_u32))
                goto next0;     /* valid packet */
              if (PREDICT_FALSE
                  (ip4_address_is_multicast (&ip4_0->dst_address)))
                {
                  key4_0.remote = ip4_0->dst_address.as_u32;
                  key4_0.vni = vnet_get_geneve_vni_network_order (geneve0);
                  /* Make sure mcast GENEVE tunnel exist by packet DIP and VNI */
                  p0 = hash_get (vxm->geneve4_tunnel_by_key, key4_0.as_u64);
                  if (PREDICT_TRUE (p0 != NULL))
                    {
                      mt0 = pool_elt_at_index (vxm->tunnels, p0[0]);
                      goto next0;       /* valid packet */
                    }
                }
              error0 = GENEVE_ERROR_NO_SUCH_TUNNEL;
              next0 = GENEVE_INPUT_NEXT_DROP;
              goto trace0;

            }
          else                  /* !is_ip4 */
            {
              key6_0.remote.as_u64[0] = ip6_0->src_address.as_u64[0];
              key6_0.remote.as_u64[1] = ip6_0->src_address.as_u64[1];
              key6_0.vni = vnet_get_geneve_vni_network_order (geneve0);

              /* Make sure GENEVE tunnel exist according to packet SIP and VNI */
              if (PREDICT_FALSE
                  (memcmp (&key6_0, &last_key6, sizeof (last_key6)) != 0))
                {
                  p0 = hash_get_mem (vxm->geneve6_tunnel_by_key, &key6_0);
                  if (PREDICT_FALSE (p0 == NULL))
                    {
                      error0 = GENEVE_ERROR_NO_SUCH_TUNNEL;
                      next0 = GENEVE_INPUT_NEXT_DROP;
                      goto trace0;
                    }
                  clib_memcpy_fast (&last_key6, &key6_0, sizeof (key6_0));
                  tunnel_index0 = last_tunnel_index = p0[0];
                }
              else
                tunnel_index0 = last_tunnel_index;
              t0 = pool_elt_at_index (vxm->tunnels, tunnel_index0);

              /* Validate GENEVE tunnel encap-fib index against packet */
              if (PREDICT_FALSE (validate_geneve_fib (b0, t0, is_ip4) == 0))
                {
                  error0 = GENEVE_ERROR_NO_SUCH_TUNNEL;
                  next0 = GENEVE_INPUT_NEXT_DROP;
                  goto trace0;
                }

              /* Validate GENEVE tunnel SIP against packet DIP */
              if (PREDICT_TRUE (ip6_address_is_equal (&ip6_0->dst_address,
                                                      &t0->local.ip6)))
                goto next0;     /* valid packet */
              if (PREDICT_FALSE
                  (ip6_address_is_multicast (&ip6_0->dst_address)))
                {
                  key6_0.remote.as_u64[0] = ip6_0->dst_address.as_u64[0];
                  key6_0.remote.as_u64[1] = ip6_0->dst_address.as_u64[1];
                  key6_0.vni = vnet_get_geneve_vni_network_order (geneve0);
                  p0 = hash_get_mem (vxm->geneve6_tunnel_by_key, &key6_0);
                  if (PREDICT_TRUE (p0 != NULL))
                    {
                      mt0 = pool_elt_at_index (vxm->tunnels, p0[0]);
                      goto next0;       /* valid packet */
                    }
                }
              error0 = GENEVE_ERROR_NO_SUCH_TUNNEL;
              next0 = GENEVE_INPUT_NEXT_DROP;
              goto trace0;
            }

        next0:
          next0 = t0->decap_next_index;
          sw_if_index0 = t0->sw_if_index;
          len0 = vlib_buffer_length_in_chain (vm, b0);

          /* Required to make the l2 tag push / pop code work on l2 subifs */
          if (PREDICT_TRUE (next0 == GENEVE_INPUT_NEXT_L2_INPUT))
            vnet_update_l2_len (b0);

          /* Set packet input sw_if_index to unicast GENEVE tunnel for learning */
          vnet_buffer (b0)->sw_if_index[VLIB_RX] = sw_if_index0;
          sw_if_index0 = (mt0) ? mt0->sw_if_index : sw_if_index0;

          pkts_decapsulated++;
          stats_n_packets += 1;
          stats_n_bytes += len0;

          /* Batch stats increment on the same geneve tunnel so counter
             is not incremented per packet */
          if (PREDICT_FALSE (sw_if_index0 != stats_sw_if_index))
            {
              stats_n_packets -= 1;
              stats_n_bytes -= len0;
              if (stats_n_packets)
                vlib_increment_combined_counter
                  (im->combined_sw_if_counters + VNET_INTERFACE_COUNTER_RX,
                   thread_index, stats_sw_if_index,
                   stats_n_packets, stats_n_bytes);
              stats_n_packets = 1;
              stats_n_bytes = len0;
              stats_sw_if_index = sw_if_index0;
            }

        trace0:
          b0->error = error0 ? node->errors[error0] : 0;

          if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
            {
              geneve_rx_trace_t *tr
                = vlib_add_trace (vm, node, b0, sizeof (*tr));
              tr->next_index = next0;
              tr->error = error0;
              tr->tunnel_index = tunnel_index0;
              tr->vni_rsvd = vnet_get_geneve_vni (geneve0);
            }

          if (PREDICT_FALSE
              (vnet_get_geneve_version (geneve1) != GENEVE_VERSION))
            {
              error1 = GENEVE_ERROR_BAD_FLAGS;
              next1 = GENEVE_INPUT_NEXT_DROP;
              goto trace1;
            }
#if SUPPORT_OPTIONS_HEADER==1
          if (PREDICT_FALSE (vnet_get_geneve_critical_bit (geneve1) == 1))
            {
              error1 = GENEVE_ERROR_BAD_FLAGS;
              next1 = GENEVE_INPUT_NEXT_DROP;
              goto trace1;
            }
#endif
          if (is_ip4)
            {
              key4_1.remote = ip4_1->src_address.as_u32;
              key4_1.vni = vnet_get_geneve_vni_network_order (geneve1);

              /* Make sure unicast GENEVE tunnel exist by packet SIP and VNI */
              if (PREDICT_FALSE (key4_1.as_u64 != last_key4.as_u64))
                {
                  p1 = hash_get (vxm->geneve4_tunnel_by_key, key4_1.as_u64);
                  if (PREDICT_FALSE (p1 == NULL))
                    {
                      error1 = GENEVE_ERROR_NO_SUCH_TUNNEL;
                      next1 = GENEVE_INPUT_NEXT_DROP;
                      goto trace1;
                    }
                  last_key4.as_u64 = key4_1.as_u64;
                  tunnel_index1 = last_tunnel_index = p1[0];
                }
              else
                tunnel_index1 = last_tunnel_index;
              t1 = pool_elt_at_index (vxm->tunnels, tunnel_index1);

              /* Validate GENEVE tunnel encap-fib index against packet */
              if (PREDICT_FALSE (validate_geneve_fib (b1, t1, is_ip4) == 0))
                {
                  error1 = GENEVE_ERROR_NO_SUCH_TUNNEL;
                  next1 = GENEVE_INPUT_NEXT_DROP;
                  goto trace1;
                }

              /* Validate GENEVE tunnel SIP against packet DIP */
              if (PREDICT_TRUE
                  (ip4_1->dst_address.as_u32 == t1->local.ip4.as_u32))
                goto next1;     /* valid packet */
              if (PREDICT_FALSE
                  (ip4_address_is_multicast (&ip4_1->dst_address)))
                {
                  key4_1.remote = ip4_1->dst_address.as_u32;
                  key4_1.vni = vnet_get_geneve_vni_network_order (geneve1);
                  /* Make sure mcast GENEVE tunnel exist by packet DIP and VNI */
                  p1 = hash_get (vxm->geneve4_tunnel_by_key, key4_1.as_u64);
                  if (PREDICT_TRUE (p1 != NULL))
                    {
                      mt1 = pool_elt_at_index (vxm->tunnels, p1[0]);
                      goto next1;       /* valid packet */
                    }
                }
              error1 = GENEVE_ERROR_NO_SUCH_TUNNEL;
              next1 = GENEVE_INPUT_NEXT_DROP;
              goto trace1;

            }
          else                  /* !is_ip4 */
            {
              key6_1.remote.as_u64[0] = ip6_1->src_address.as_u64[0];
              key6_1.remote.as_u64[1] = ip6_1->src_address.as_u64[1];
              key6_1.vni = vnet_get_geneve_vni_network_order (geneve1);

              /* Make sure GENEVE tunnel exist according to packet SIP and VNI */
              if (PREDICT_FALSE
                  (memcmp (&key6_1, &last_key6, sizeof (last_key6)) != 0))
                {
                  p1 = hash_get_mem (vxm->geneve6_tunnel_by_key, &key6_1);

                  if (PREDICT_FALSE (p1 == NULL))
                    {
                      error1 = GENEVE_ERROR_NO_SUCH_TUNNEL;
                      next1 = GENEVE_INPUT_NEXT_DROP;
                      goto trace1;
                    }

                  clib_memcpy_fast (&last_key6, &key6_1, sizeof (key6_1));
                  tunnel_index1 = last_tunnel_index = p1[0];
                }
              else
                tunnel_index1 = last_tunnel_index;
              t1 = pool_elt_at_index (vxm->tunnels, tunnel_index1);

              /* Validate GENEVE tunnel encap-fib index against packet */
              if (PREDICT_FALSE (validate_geneve_fib (b1, t1, is_ip4) == 0))
                {
                  error1 = GENEVE_ERROR_NO_SUCH_TUNNEL;
                  next1 = GENEVE_INPUT_NEXT_DROP;
                  goto trace1;
                }

              /* Validate GENEVE tunnel SIP against packet DIP */
              if (PREDICT_TRUE (ip6_address_is_equal (&ip6_1->dst_address,
                                                      &t1->local.ip6)))
                goto next1;     /* valid packet */
              if (PREDICT_FALSE
                  (ip6_address_is_multicast (&ip6_1->dst_address)))
                {
                  key6_1.remote.as_u64[0] = ip6_1->dst_address.as_u64[0];
                  key6_1.remote.as_u64[1] = ip6_1->dst_address.as_u64[1];
                  key6_1.vni = vnet_get_geneve_vni_network_order (geneve1);
                  p1 = hash_get_mem (vxm->geneve6_tunnel_by_key, &key6_1);
                  if (PREDICT_TRUE (p1 != NULL))
                    {
                      mt1 = pool_elt_at_index (vxm->tunnels, p1[0]);
                      goto next1;       /* valid packet */
                    }
                }
              error1 = GENEVE_ERROR_NO_SUCH_TUNNEL;
              next1 = GENEVE_INPUT_NEXT_DROP;
              goto trace1;
            }

        next1:
          next1 = t1->decap_next_index;
          sw_if_index1 = t1->sw_if_index;
          len1 = vlib_buffer_length_in_chain (vm, b1);

          /* Required to make the l2 tag push / pop code work on l2 subifs */
          if (PREDICT_TRUE (next1 == GENEVE_INPUT_NEXT_L2_INPUT))
            vnet_update_l2_len (b1);

          /* Set packet input sw_if_index to unicast GENEVE tunnel for learning */
          vnet_buffer (b1)->sw_if_index[VLIB_RX] = sw_if_index1;
          sw_if_index1 = (mt1) ? mt1->sw_if_index : sw_if_index1;

          pkts_decapsulated++;
          stats_n_packets += 1;
          stats_n_bytes += len1;

          /* Batch stats increment on the same geneve tunnel so counter
             is not incremented per packet */
          if (PREDICT_FALSE (sw_if_index1 != stats_sw_if_index))
            {
              stats_n_packets -= 1;
              stats_n_bytes -= len1;
              if (stats_n_packets)
                vlib_increment_combined_counter
                  (im->combined_sw_if_counters + VNET_INTERFACE_COUNTER_RX,
                   thread_index, stats_sw_if_index,
                   stats_n_packets, stats_n_bytes);
              stats_n_packets = 1;
              stats_n_bytes = len1;
              stats_sw_if_index = sw_if_index1;
            }

        trace1:
          b1->error = error1 ? node->errors[error1] : 0;

          if (PREDICT_FALSE (b1->flags & VLIB_BUFFER_IS_TRACED))
            {
              geneve_rx_trace_t *tr
                = vlib_add_trace (vm, node, b1, sizeof (*tr));
              tr->next_index = next1;
              tr->error = error1;
              tr->tunnel_index = tunnel_index1;
              tr->vni_rsvd = vnet_get_geneve_vni (geneve1);
            }

          vlib_validate_buffer_enqueue_x2 (vm, node, next_index,
                                           to_next, n_left_to_next,
                                           bi0, bi1, next0, next1);
        }

      while (n_left_from > 0 && n_left_to_next > 0)
        {
          u32 bi0;
          vlib_buffer_t *b0;
          u32 next0;
          ip4_header_t *ip4_0;
          ip6_header_t *ip6_0;
          geneve_header_t *geneve0;
          uword *p0;
          u32 tunnel_index0;
          geneve_tunnel_t *t0, *mt0 = NULL;
          geneve4_tunnel_key_t key4_0;
          geneve6_tunnel_key_t key6_0;
          u32 error0;
          u32 sw_if_index0, len0;

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

          b0 = b[0];
          b += 1;

          /* udp leaves current_data pointing at the geneve header */
          geneve0 = vlib_buffer_get_current (b0);
          vnet_geneve_hdr_1word_ntoh (geneve0);

          if (is_ip4)
            {
              vlib_buffer_advance
                (b0, -(word) (sizeof (udp_header_t) + sizeof (ip4_header_t)));
              ip4_0 = vlib_buffer_get_current (b0);
            }
          else
            {
              vlib_buffer_advance
                (b0, -(word) (sizeof (udp_header_t) + sizeof (ip6_header_t)));
              ip6_0 = vlib_buffer_get_current (b0);
            }

          /* pop (ip, udp, geneve) */
          if (is_ip4)
            {
              vlib_buffer_advance
                (b0,
                 sizeof (*ip4_0) + sizeof (udp_header_t) +
                 GENEVE_BASE_HEADER_LENGTH +
                 vnet_get_geneve_options_len (geneve0));
            }
          else
            {
              vlib_buffer_advance
                (b0,
                 sizeof (*ip6_0) + sizeof (udp_header_t) +
                 GENEVE_BASE_HEADER_LENGTH +
                 vnet_get_geneve_options_len (geneve0));
            }

          tunnel_index0 = ~0;
          error0 = 0;

          if (PREDICT_FALSE
              (vnet_get_geneve_version (geneve0) != GENEVE_VERSION))
            {
              error0 = GENEVE_ERROR_BAD_FLAGS;
              next0 = GENEVE_INPUT_NEXT_DROP;
              goto trace00;
            }
#if SUPPORT_OPTIONS_HEADER==1
          if (PREDICT_FALSE (vnet_get_geneve_critical_bit (geneve0) == 1))
            {
              error0 = GENEVE_ERROR_BAD_FLAGS;
              next0 = GENEVE_INPUT_NEXT_DROP;
              goto trace00;
            }
#endif
          if (is_ip4)
            {
              key4_0.remote = ip4_0->src_address.as_u32;
              key4_0.vni = vnet_get_geneve_vni_network_order (geneve0);

              /* Make sure unicast GENEVE tunnel exist by packet SIP and VNI */
              if (PREDICT_FALSE (key4_0.as_u64 != last_key4.as_u64))
                {
                  p0 = hash_get (vxm->geneve4_tunnel_by_key, key4_0.as_u64);
                  if (PREDICT_FALSE (p0 == NULL))
                    {
                      error0 = GENEVE_ERROR_NO_SUCH_TUNNEL;
                      next0 = GENEVE_INPUT_NEXT_DROP;
                      goto trace00;
                    }
                  last_key4.as_u64 = key4_0.as_u64;
                  tunnel_index0 = last_tunnel_index = p0[0];
                }
              else
                tunnel_index0 = last_tunnel_index;
              t0 = pool_elt_at_index (vxm->tunnels, tunnel_index0);

              /* Validate GENEVE tunnel encap-fib index agaist packet */
              if (PREDICT_FALSE (validate_geneve_fib (b0, t0, is_ip4) == 0))
                {
                  error0 = GENEVE_ERROR_NO_SUCH_TUNNEL;
                  next0 = GENEVE_INPUT_NEXT_DROP;
                  goto trace00;
                }

              /* Validate GENEVE tunnel SIP against packet DIP */
              if (PREDICT_TRUE
                  (ip4_0->dst_address.as_u32 == t0->local.ip4.as_u32))
                goto next00;    /* valid packet */
              if (PREDICT_FALSE
                  (ip4_address_is_multicast (&ip4_0->dst_address)))
                {
                  key4_0.remote = ip4_0->dst_address.as_u32;
                  key4_0.vni = vnet_get_geneve_vni_network_order (geneve0);
                  /* Make sure mcast GENEVE tunnel exist by packet DIP and VNI */
                  p0 = hash_get (vxm->geneve4_tunnel_by_key, key4_0.as_u64);
                  if (PREDICT_TRUE (p0 != NULL))
                    {
                      mt0 = pool_elt_at_index (vxm->tunnels, p0[0]);
                      goto next00;      /* valid packet */
                    }
                }
              error0 = GENEVE_ERROR_NO_SUCH_TUNNEL;
              next0 = GENEVE_INPUT_NEXT_DROP;
              goto trace00;

            }
          else                  /* !is_ip4 */
            {
              key6_0.remote.as_u64[0] = ip6_0->src_address.as_u64[0];
              key6_0.remote.as_u64[1] = ip6_0->src_address.as_u64[1];
              key6_0.vni = vnet_get_geneve_vni_network_order (geneve0);

              /* Make sure GENEVE tunnel exist according to packet SIP and VNI */
              if (PREDICT_FALSE
                  (memcmp (&key6_0, &last_key6, sizeof (last_key6)) != 0))
                {
                  p0 = hash_get_mem (vxm->geneve6_tunnel_by_key, &key6_0);
                  if (PREDICT_FALSE (p0 == NULL))
                    {
                      error0 = GENEVE_ERROR_NO_SUCH_TUNNEL;
                      next0 = GENEVE_INPUT_NEXT_DROP;
                      goto trace00;
                    }
                  clib_memcpy_fast (&last_key6, &key6_0, sizeof (key6_0));
                  tunnel_index0 = last_tunnel_index = p0[0];
                }
              else
                tunnel_index0 = last_tunnel_index;
              t0 = pool_elt_at_index (vxm->tunnels, tunnel_index0);

              /* Validate GENEVE tunnel encap-fib index agaist packet */
              if (PREDICT_FALSE (validate_geneve_fib (b0, t0, is_ip4) == 0))
                {
                  error0 = GENEVE_ERROR_NO_SUCH_TUNNEL;
                  next0 = GENEVE_INPUT_NEXT_DROP;
                  goto trace00;
                }

              /* Validate GENEVE tunnel SIP against packet DIP */
              if (PREDICT_TRUE (ip6_address_is_equal (&ip6_0->dst_address,
                                                      &t0->local.ip6)))
                goto next00;    /* valid packet */
              if (PREDICT_FALSE
                  (ip6_address_is_multicast (&ip6_0->dst_address)))
                {
                  key6_0.remote.as_u64[0] = ip6_0->dst_address.as_u64[0];
                  key6_0.remote.as_u64[1] = ip6_0->dst_address.as_u64[1];
                  key6_0.vni = vnet_get_geneve_vni_network_order (geneve0);
                  p0 = hash_get_mem (vxm->geneve6_tunnel_by_key, &key6_0);
                  if (PREDICT_TRUE (p0 != NULL))
                    {
                      mt0 = pool_elt_at_index (vxm->tunnels, p0[0]);
                      goto next00;      /* valid packet */
                    }
                }
              error0 = GENEVE_ERROR_NO_SUCH_TUNNEL;
              next0 = GENEVE_INPUT_NEXT_DROP;
              goto trace00;
            }

        next00:
          next0 = t0->decap_next_index;
          sw_if_index0 = t0->sw_if_index;
          len0 = vlib_buffer_length_in_chain (vm, b0);

          /* Required to make the l2 tag push / pop code work on l2 subifs */
          if (PREDICT_TRUE (next0 == GENEVE_INPUT_NEXT_L2_INPUT))
            vnet_update_l2_len (b0);

          /* Set packet input sw_if_index to unicast GENEVE tunnel for learning */
          vnet_buffer (b0)->sw_if_index[VLIB_RX] = sw_if_index0;
          sw_if_index0 = (mt0) ? mt0->sw_if_index : sw_if_index0;

          pkts_decapsulated++;
          stats_n_packets += 1;
          stats_n_bytes += len0;

          /* Batch stats increment on the same geneve tunnel so counter
             is not incremented per packet */
          if (PREDICT_FALSE (sw_if_index0 != stats_sw_if_index))
            {
              stats_n_packets -= 1;
              stats_n_bytes -= len0;
              if (stats_n_packets)
                vlib_increment_combined_counter
                  (im->combined_sw_if_counters + VNET_INTERFACE_COUNTER_RX,
                   thread_index, stats_sw_if_index,
                   stats_n_packets, stats_n_bytes);
              stats_n_packets = 1;
              stats_n_bytes = len0;
              stats_sw_if_index = sw_if_index0;
            }

        trace00:
          b0->error = error0 ? node->errors[error0] : 0;

          if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
            {
              geneve_rx_trace_t *tr
                = vlib_add_trace (vm, node, b0, sizeof (*tr));
              tr->next_index = next0;
              tr->error = error0;
              tr->tunnel_index = tunnel_index0;
              tr->vni_rsvd = vnet_get_geneve_vni (geneve0);
            }
          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);
    }
  /* Do we still need this now that tunnel tx stats is kept? */
  vlib_node_increment_counter (vm, is_ip4 ?
                               geneve4_input_node.
                               index : geneve6_input_node.index,
                               GENEVE_ERROR_DECAPSULATED, pkts_decapsulated);

  /* Increment any remaining batch stats */
  if (stats_n_packets)
    {
      vlib_increment_combined_counter
        (im->combined_sw_if_counters + VNET_INTERFACE_COUNTER_RX,
         thread_index, stats_sw_if_index, stats_n_packets, stats_n_bytes);
      node->runtime_data[0] = stats_sw_if_index;
    }

  return from_frame->n_vectors;
}

VLIB_NODE_FN (geneve4_input_node) (vlib_main_t * vm,
                                   vlib_node_runtime_t * node,
                                   vlib_frame_t * from_frame)
{
  return geneve_input (vm, node, from_frame, /* is_ip4 */ 1);
}

VLIB_NODE_FN (geneve6_input_node) (vlib_main_t * vm,
                                   vlib_node_runtime_t * node,
                                   vlib_frame_t * from_frame)
{
  return geneve_input (vm, node, from_frame, /* is_ip4 */ 0);
}

static char *geneve_error_strings[] = {
#define geneve_error(n,s) s,
#include <vnet/geneve/geneve_error.def>
#undef geneve_error
#undef _
};

/* *INDENT-OFF* */
VLIB_REGISTER_NODE (geneve4_input_node) = {
  .name = "geneve4-input",
  /* Takes a vector of packets. */
  .vector_size = sizeof (u32),
  .n_errors = GENEVE_N_ERROR,
  .error_strings = geneve_error_strings,
  .n_next_nodes = GENEVE_INPUT_N_NEXT,
  .next_nodes = {
#define _(s,n) [GENEVE_INPUT_NEXT_##s] = n,
    foreach_geneve_input_next
#undef _
  },

//temp  .format_buffer = format_geneve_header,
  .format_trace = format_geneve_rx_trace,
  // $$$$ .unformat_buffer = unformat_geneve_header,
};

VLIB_REGISTER_NODE (geneve6_input_node) = {
  .name = "geneve6-input",
  /* Takes a vector of packets. */
  .vector_size = sizeof (u32),
  .n_errors = GENEVE_N_ERROR,
  .error_strings = geneve_error_strings,
  .n_next_nodes = GENEVE_INPUT_N_NEXT,
  .next_nodes = {
#define _(s,n) [GENEVE_INPUT_NEXT_##s] = n,
  foreach_geneve_input_next
#undef _
  },
//temp  .format_buffer = format_geneve_header,
  .format_trace = format_geneve_rx_trace,
  // $$$$ .unformat_buffer = unformat_geneve_header,
};
/* *INDENT-ON* */

typedef enum
{
  IP_GENEVE_BYPASS_NEXT_DROP,
  IP_GENEVE_BYPASS_NEXT_GENEVE,
  IP_GENEVE_BYPASS_N_NEXT,
} ip_vxan_bypass_next_t;

always_inline uword
ip_geneve_bypass_inline (vlib_main_t * vm,
                         vlib_node_runtime_t * node,
                         vlib_frame_t * frame, u32 is_ip4)
{
  geneve_main_t *vxm = &geneve_main;
  u32 *from, *to_next, n_left_from, n_left_to_next, next_index;
  vlib_node_runtime_t *error_node =
    vlib_node_get_runtime (vm, ip4_input_node.index);
  vtep4_key_t last_vtep4;       /* last IPv4 address / fib index
                                   matching a local VTEP address */
  vtep6_key_t last_vtep6;       /* last IPv6 address / fib index
                                   matching a local VTEP address */

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

  if (node->flags & VLIB_NODE_FLAG_TRACE)
    ip4_forward_next_trace (vm, node, frame, VLIB_TX);

  if (is_ip4)
    vtep4_key_init (&last_vtep4);
  else
    vtep6_key_init (&last_vtep6);

  while (n_left_from > 0)
    {
      vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);

      while (n_left_from >= 4 && n_left_to_next >= 2)
        {
          vlib_buffer_t *b0, *b1;
          ip4_header_t *ip40, *ip41;
          ip6_header_t *ip60, *ip61;
          udp_header_t *udp0, *udp1;
          u32 bi0, ip_len0, udp_len0, flags0, next0;
          u32 bi1, ip_len1, udp_len1, flags1, next1;
          i32 len_diff0, len_diff1;
          u8 error0, good_udp0, proto0;
          u8 error1, good_udp1, proto1;

          /* Prefetch next iteration. */
          {
            vlib_buffer_t *p2, *p3;

            p2 = vlib_get_buffer (vm, from[2]);
            p3 = vlib_get_buffer (vm, from[3]);

            vlib_prefetch_buffer_header (p2, LOAD);
            vlib_prefetch_buffer_header (p3, LOAD);

            CLIB_PREFETCH (p2->data, 2 * CLIB_CACHE_LINE_BYTES, LOAD);
            CLIB_PREFETCH (p3->data, 2 * CLIB_CACHE_LINE_BYTES, LOAD);
          }

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

          b0 = vlib_get_buffer (vm, bi0);
          b1 = vlib_get_buffer (vm, bi1);
          if (is_ip4)
            {
              ip40 = vlib_buffer_get_current (b0);
              ip41 = vlib_buffer_get_current (b1);
            }
          else
            {
              ip60 = vlib_buffer_get_current (b0);
              ip61 = vlib_buffer_get_current (b1);
            }

          /* Setup packet for next IP feature */
          vnet_feature_next (&next0, b0);
          vnet_feature_next (&next1, b1);

          if (is_ip4)
            {
              /* Treat IP frag packets as "experimental" protocol for now
                 until support of IP frag reassembly is implemented */
              proto0 = ip4_is_fragment (ip40) ? 0xfe : ip40->protocol;
              proto1 = ip4_is_fragment (ip41) ? 0xfe : ip41->protocol;
            }
          else
            {
              proto0 = ip60->protocol;
              proto1 = ip61->protocol;
            }

          /* Process packet 0 */
          if (proto0 != IP_PROTOCOL_UDP)
            goto exit0;         /* not UDP packet */

          if (is_ip4)
            udp0 = ip4_next_header (ip40);
          else
            udp0 = ip6_next_header (ip60);

          if (udp0->dst_port != clib_host_to_net_u16 (UDP_DST_PORT_geneve))
            goto exit0;         /* not GENEVE packet */

          /* Validate DIP against VTEPs */
          if (is_ip4)
            {
              if (!vtep4_check (&vxm->vtep_table, b0, ip40, &last_vtep4))
                goto exit0;     /* no local VTEP for GENEVE packet */
            }
          else
            {
              if (!vtep6_check (&vxm->vtep_table, b0, ip60, &last_vtep6))
                goto exit0;     /* no local VTEP for GENEVE packet */
            }

          flags0 = b0->flags;
          good_udp0 = (flags0 & VNET_BUFFER_F_L4_CHECKSUM_CORRECT) != 0;

          /* Don't verify UDP checksum for packets with explicit zero checksum. */
          good_udp0 |= udp0->checksum == 0;

          /* Verify UDP length */
          if (is_ip4)
            ip_len0 = clib_net_to_host_u16 (ip40->length);
          else
            ip_len0 = clib_net_to_host_u16 (ip60->payload_length);
          udp_len0 = clib_net_to_host_u16 (udp0->length);
          len_diff0 = ip_len0 - udp_len0;

          /* Verify UDP checksum */
          if (PREDICT_FALSE (!good_udp0))
            {
              if ((flags0 & VNET_BUFFER_F_L4_CHECKSUM_COMPUTED) == 0)
                {
                  if (is_ip4)
                    flags0 = ip4_tcp_udp_validate_checksum (vm, b0);
                  else
                    flags0 = ip6_tcp_udp_icmp_validate_checksum (vm, b0);
                  good_udp0 =
                    (flags0 & VNET_BUFFER_F_L4_CHECKSUM_CORRECT) != 0;
                }
            }

          if (is_ip4)
            {
              error0 = good_udp0 ? 0 : IP4_ERROR_UDP_CHECKSUM;
              error0 = (len_diff0 >= 0) ? error0 : IP4_ERROR_UDP_LENGTH;
            }
          else
            {
              error0 = good_udp0 ? 0 : IP6_ERROR_UDP_CHECKSUM;
              error0 = (len_diff0 >= 0) ? error0 : IP6_ERROR_UDP_LENGTH;
            }

          next0 = error0 ?
            IP_GENEVE_BYPASS_NEXT_DROP : IP_GENEVE_BYPASS_NEXT_GENEVE;
          b0->error = error0 ? error_node->errors[error0] : 0;

          /* geneve-input node expect current at GENEVE header */
          if (is_ip4)
            vlib_buffer_advance (b0,
                                 sizeof (ip4_header_t) +
                                 sizeof (udp_header_t));
          else
            vlib_buffer_advance (b0,
                                 sizeof (ip6_header_t) +
                                 sizeof (udp_header_t));

        exit0:
          /* Process packet 1 */
          if (proto1 != IP_PROTOCOL_UDP)
            goto exit1;         /* not UDP packet */

          if (is_ip4)
            udp1 = ip4_next_header (ip41);
          else
            udp1 = ip6_next_header (ip61);

          if (udp1->dst_port != clib_host_to_net_u16 (UDP_DST_PORT_geneve))
            goto exit1;         /* not GENEVE packet */

          /* Validate DIP against VTEPs */
          if (is_ip4)
            {
              if (!vtep4_check (&vxm->vtep_table, b1, ip41, &last_vtep4))
                goto exit1;     /* no local VTEP for GENEVE packet */
            }
          else
            {
              if (!vtep6_check (&vxm->vtep_table, b1, ip61, &last_vtep6))
                goto exit1;     /* no local VTEP for GENEVE packet */
            }

          flags1 = b1->flags;
          good_udp1 = (flags1 & VNET_BUFFER_F_L4_CHECKSUM_CORRECT) != 0;

          /* Don't verify UDP checksum for packets with explicit zero checksum. */
          good_udp1 |= udp1->checksum == 0;

          /* Verify UDP length */
          if (is_ip4)
            ip_len1 = clib_net_to_host_u16 (ip41->length);
          else
            ip_len1 = clib_net_to_host_u16 (ip61->payload_length);
          udp_len1 = clib_net_to_host_u16 (udp1->length);
          len_diff1 = ip_len1 - udp_len1;

          /* Verify UDP checksum */
          if (PREDICT_FALSE (!good_udp1))
            {
              if ((flags1 & VNET_BUFFER_F_L4_CHECKSUM_COMPUTED) == 0)
                {
                  if (is_ip4)
                    flags1 = ip4_tcp_udp_validate_checksum (vm, b1);
                  else
                    flags1 = ip6_tcp_udp_icmp_validate_checksum (vm, b1);
                  good_udp1 =
                    (flags1 & VNET_BUFFER_F_L4_CHECKSUM_CORRECT) != 0;
                }
            }

          if (is_ip4)
            {
              error1 = good_udp1 ? 0 : IP4_ERROR_UDP_CHECKSUM;
              error1 = (len_diff1 >= 0) ? error1 : IP4_ERROR_UDP_LENGTH;
            }
          else
            {
              error1 = good_udp1 ? 0 : IP6_ERROR_UDP_CHECKSUM;
              error1 = (len_diff1 >= 0) ? error1 : IP6_ERROR_UDP_LENGTH;
            }

          next1 = error1 ?
            IP_GENEVE_BYPASS_NEXT_DROP : IP_GENEVE_BYPASS_NEXT_GENEVE;
          b1->error = error1 ? error_node->errors[error1] : 0;

          /* geneve-input node expect current at GENEVE header */
          if (is_ip4)
            vlib_buffer_advance (b1,
                                 sizeof (ip4_header_t) +
                                 sizeof (udp_header_t));
          else
            vlib_buffer_advance (b1,
                                 sizeof (ip6_header_t) +
                                 sizeof (udp_header_t));

        exit1:
          vlib_validate_buffer_enqueue_x2 (vm, node, next_index,
                                           to_next, n_left_to_next,
                                           bi0, bi1, next0, next1);
        }

      while (n_left_from > 0 && n_left_to_next > 0)
        {
          vlib_buffer_t *b0;
          ip4_header_t *ip40;
          ip6_header_t *ip60;
          udp_header_t *udp0;
          u32 bi0, ip_len0, udp_len0, flags0, next0;
          i32 len_diff0;
          u8 error0, good_udp0, proto0;

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

          b0 = vlib_get_buffer (vm, bi0);
          if (is_ip4)
            ip40 = vlib_buffer_get_current (b0);
          else
            ip60 = vlib_buffer_get_current (b0);

          /* Setup packet for next IP feature */
          vnet_feature_next (&next0, b0);

          if (is_ip4)
            /* Treat IP4 frag packets as "experimental" protocol for now
               until support of IP frag reassembly is implemented */
            proto0 = ip4_is_fragment (ip40) ? 0xfe : ip40->protocol;
          else
            proto0 = ip60->protocol;

          if (proto0 != IP_PROTOCOL_UDP)
            goto exit;          /* not UDP packet */

          if (is_ip4)
            udp0 = ip4_next_header (ip40);
          else
            udp0 = ip6_next_header (ip60);

          if (udp0->dst_port != clib_host_to_net_u16 (UDP_DST_PORT_geneve))
            goto exit;          /* not GENEVE packet */

          /* Validate DIP against VTEPs */
          if (is_ip4)
            {
              if (!vtep4_check (&vxm->vtep_table, b0, ip40, &last_vtep4))
                goto exit;      /* no local VTEP for GENEVE packet */
            }
          else
            {
              if (!vtep6_check (&vxm->vtep_table, b0, ip60, &last_vtep6))
                goto exit;      /* no local VTEP for GENEVE packet */
            }

          flags0 = b0->flags;
          good_udp0 = (flags0 & VNET_BUFFER_F_L4_CHECKSUM_CORRECT) != 0;

          /* Don't verify UDP checksum for packets with explicit zero checksum. */
          good_udp0 |= udp0->checksum == 0;

          /* Verify UDP length */
          if (is_ip4)
            ip_len0 = clib_net_to_host_u16 (ip40->length);
          else
            ip_len0 = clib_net_to_host_u16 (ip60->payload_length);
          udp_len0 = clib_net_to_host_u16 (udp0->length);
          len_diff0 = ip_len0 - udp_len0;

          /* Verify UDP checksum */
          if (PREDICT_FALSE (!good_udp0))
            {
              if ((flags0 & VNET_BUFFER_F_L4_CHECKSUM_COMPUTED) == 0)
                {
                  if (is_ip4)
                    flags0 = ip4_tcp_udp_validate_checksum (vm, b0);
                  else
                    flags0 = ip6_tcp_udp_icmp_validate_checksum (vm, b0);
                  good_udp0 =
                    (flags0 & VNET_BUFFER_F_L4_CHECKSUM_CORRECT) != 0;
                }
            }

          if (is_ip4)
            {
              error0 = good_udp0 ? 0 : IP4_ERROR_UDP_CHECKSUM;
              error0 = (len_diff0 >= 0) ? error0 : IP4_ERROR_UDP_LENGTH;
            }
          else
            {
              error0 = good_udp0 ? 0 : IP6_ERROR_UDP_CHECKSUM;
              error0 = (len_diff0 >= 0) ? error0 : IP6_ERROR_UDP_LENGTH;
            }

          next0 = error0 ?
            IP_GENEVE_BYPASS_NEXT_DROP : IP_GENEVE_BYPASS_NEXT_GENEVE;
          b0->error = error0 ? error_node->errors[error0] : 0;

          /* geneve-input node expect current at GENEVE header */
          if (is_ip4)
            vlib_buffer_advance (b0,
                                 sizeof (ip4_header_t) +
                                 sizeof (udp_header_t));
          else
            vlib_buffer_advance (b0,
                                 sizeof (ip6_header_t) +
                                 sizeof (udp_header_t));

        exit:
          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;
}

VLIB_NODE_FN (ip4_geneve_bypass_node) (vlib_main_t * vm,
                                       vlib_node_runtime_t * node,
                                       vlib_frame_t * frame)
{
  return ip_geneve_bypass_inline (vm, node, frame, /* is_ip4 */ 1);
}

/* *INDENT-OFF* */
VLIB_REGISTER_NODE (ip4_geneve_bypass_node) =
{
  .name = "ip4-geneve-bypass",
  .vector_size = sizeof (u32),
  .n_next_nodes = IP_GENEVE_BYPASS_N_NEXT,.next_nodes =
  {
    [IP_GENEVE_BYPASS_NEXT_DROP] = "error-drop",
    [IP_GENEVE_BYPASS_NEXT_GENEVE] = "geneve4-input",
  },
  .format_buffer = format_ip4_header,
  .format_trace = format_ip4_forward_next_trace,
};
/* *INDENT-ON* */

VLIB_NODE_FN (ip6_geneve_bypass_node) (vlib_main_t * vm,
                                       vlib_node_runtime_t * node,
                                       vlib_frame_t * frame)
{
  return ip_geneve_bypass_inline (vm, node, frame, /* is_ip4 */ 0);
}

/* *INDENT-OFF* */
VLIB_REGISTER_NODE (ip6_geneve_bypass_node) =
{
  .name = "ip6-geneve-bypass",
  .vector_size = sizeof (u32),
  .n_next_nodes = IP_GENEVE_BYPASS_N_NEXT,
  .next_nodes =
  {
    [IP_GENEVE_BYPASS_NEXT_DROP] = "error-drop",
    [IP_GENEVE_BYPASS_NEXT_GENEVE] = "geneve6-input",
  },
  .format_buffer = format_ip6_header,
  .format_trace = format_ip6_forward_next_trace,
};
/* *INDENT-ON* */

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