geneve: Move to plugin

Type: refactor

Change-Id: I613bf4d6517591351b212bfe6c8d93abf235f5dc
Signed-off-by: Neale Ranns <nranns@cisco.com>

1 files changed, 0 insertions, 1122 deletions

diff --git a/src/vnet/geneve/geneve.c b/src/vnet/geneve/geneve.c
deleted file mode 100644
index e16616b69ea..00000000000
--- a/src/vnet/geneve/geneve.c
+++ /dev/null
@@ -1,1122 +0,0 @@
-/*
- * 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 <vnet/geneve/geneve.h>
-#include <vnet/ip/format.h>
-#include <vnet/fib/fib_entry.h>
-#include <vnet/fib/fib_table.h>
-#include <vnet/fib/fib_entry_track.h>
-#include <vnet/mfib/mfib_table.h>
-#include <vnet/adj/adj_mcast.h>
-#include <vnet/interface.h>
-#include <vlib/vlib.h>
-
-/**
- * @file
- * @brief GENEVE.
- *
- * GENEVE provides the features needed to allow L2 bridge domains (BDs)
- * to span multiple servers. This is done by building an L2 overlay on
- * top of an L3 network underlay using GENEVE tunnels.
- *
- * This makes it possible for servers to be co-located in the same data
- * center or be separated geographically as long as they are reachable
- * through the underlay L3 network.
- */
-
-
-geneve_main_t geneve_main;
-
-u8 *
-format_geneve_encap_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_encap_trace_t *t = va_arg (*args, geneve_encap_trace_t *);
-
-  s = format (s, "GENEVE encap to geneve_tunnel%d vni %d",
-	      t->tunnel_index, t->vni);
-  return s;
-}
-
-static u8 *
-format_decap_next (u8 * s, va_list * args)
-{
-  u32 next_index = va_arg (*args, u32);
-
-  switch (next_index)
-    {
-    case GENEVE_INPUT_NEXT_DROP:
-      return format (s, "drop");
-    case GENEVE_INPUT_NEXT_L2_INPUT:
-      return format (s, "l2");
-    default:
-      return format (s, "index %d", next_index);
-    }
-  return s;
-}
-
-u8 *
-format_geneve_tunnel (u8 * s, va_list * args)
-{
-  geneve_tunnel_t *t = va_arg (*args, geneve_tunnel_t *);
-  geneve_main_t *ngm = &geneve_main;
-
-  s = format (s, "[%d] lcl %U rmt %U vni %d fib-idx %d sw-if-idx %d ",
-	      t - ngm->tunnels,
-	      format_ip46_address, &t->local, IP46_TYPE_ANY,
-	      format_ip46_address, &t->remote, IP46_TYPE_ANY,
-	      t->vni, t->encap_fib_index, t->sw_if_index);
-
-  s = format (s, "encap-dpo-idx %d ", t->next_dpo.dpoi_index);
-  s = format (s, "decap-next-%U ", format_decap_next, t->decap_next_index);
-  s = format (s, "l3-mode %u ", t->l3_mode);
-
-  if (PREDICT_FALSE (ip46_address_is_multicast (&t->remote)))
-    s = format (s, "mcast-sw-if-idx %d ", t->mcast_sw_if_index);
-
-  return s;
-}
-
-static u8 *
-format_geneve_name (u8 * s, va_list * args)
-{
-  u32 dev_instance = va_arg (*args, u32);
-  return format (s, "geneve_tunnel%d", dev_instance);
-}
-
-static clib_error_t *
-geneve_interface_admin_up_down (vnet_main_t * vnm, u32 hw_if_index, u32 flags)
-{
-  u32 hw_flags = (flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP) ?
-    VNET_HW_INTERFACE_FLAG_LINK_UP : 0;
-  vnet_hw_interface_set_flags (vnm, hw_if_index, hw_flags);
-
-  return /* no error */ 0;
-}
-
-static clib_error_t *
-geneve_mac_change (vnet_hw_interface_t * hi,
-		   const u8 * old_address, const u8 * mac_address)
-{
-  l2input_interface_mac_change (hi->sw_if_index, old_address, mac_address);
-  return (NULL);
-}
-
-/* *INDENT-OFF* */
-VNET_DEVICE_CLASS (geneve_device_class, static) = {
-  .name = "GENEVE",
-  .format_device_name = format_geneve_name,
-  .format_tx_trace = format_geneve_encap_trace,
-  .admin_up_down_function = geneve_interface_admin_up_down,
-  .mac_addr_change_function = geneve_mac_change,
-};
-/* *INDENT-ON* */
-
-static u8 *
-format_geneve_header_with_length (u8 * s, va_list * args)
-{
-  u32 dev_instance = va_arg (*args, u32);
-  s = format (s, "unimplemented dev %u", dev_instance);
-  return s;
-}
-
-/* *INDENT-OFF* */
-VNET_HW_INTERFACE_CLASS (geneve_hw_class) = {
-  .name = "GENEVE",
-  .format_header = format_geneve_header_with_length,
-  .build_rewrite = default_build_rewrite,
-};
-/* *INDENT-ON* */
-
-static void
-geneve_tunnel_restack_dpo (geneve_tunnel_t * t)
-{
-  dpo_id_t dpo = DPO_INVALID;
-  u32 encap_index = ip46_address_is_ip4 (&t->remote) ?
-    geneve4_encap_node.index : geneve6_encap_node.index;
-  fib_forward_chain_type_t forw_type = ip46_address_is_ip4 (&t->remote) ?
-    FIB_FORW_CHAIN_TYPE_UNICAST_IP4 : FIB_FORW_CHAIN_TYPE_UNICAST_IP6;
-
-  fib_entry_contribute_forwarding (t->fib_entry_index, forw_type, &dpo);
-  dpo_stack_from_node (encap_index, &t->next_dpo, &dpo);
-  dpo_reset (&dpo);
-}
-
-static geneve_tunnel_t *
-geneve_tunnel_from_fib_node (fib_node_t * node)
-{
-  ASSERT (FIB_NODE_TYPE_GENEVE_TUNNEL == node->fn_type);
-  return ((geneve_tunnel_t *) (((char *) node) -
-			       STRUCT_OFFSET_OF (geneve_tunnel_t, node)));
-}
-
-/**
- * Function definition to backwalk a FIB node -
- * Here we will restack the new dpo of GENEVE DIP to encap node.
- */
-static fib_node_back_walk_rc_t
-geneve_tunnel_back_walk (fib_node_t * node, fib_node_back_walk_ctx_t * ctx)
-{
-  geneve_tunnel_restack_dpo (geneve_tunnel_from_fib_node (node));
-  return (FIB_NODE_BACK_WALK_CONTINUE);
-}
-
-/**
- * Function definition to get a FIB node from its index
- */
-static fib_node_t *
-geneve_tunnel_fib_node_get (fib_node_index_t index)
-{
-  geneve_tunnel_t *t;
-  geneve_main_t *vxm = &geneve_main;
-
-  t = pool_elt_at_index (vxm->tunnels, index);
-
-  return (&t->node);
-}
-
-/**
- * Function definition to inform the FIB node that its last lock has gone.
- */
-static void
-geneve_tunnel_last_lock_gone (fib_node_t * node)
-{
-  /*
-   * The GENEVE tunnel is a root of the graph. As such
-   * it never has children and thus is never locked.
-   */
-  ASSERT (0);
-}
-
-/*
- * Virtual function table registered by GENEVE tunnels
- * for participation in the FIB object graph.
- */
-const static fib_node_vft_t geneve_vft = {
-  .fnv_get = geneve_tunnel_fib_node_get,
-  .fnv_last_lock = geneve_tunnel_last_lock_gone,
-  .fnv_back_walk = geneve_tunnel_back_walk,
-};
-
-
-#define foreach_copy_field                      \
-_(vni)                                          \
-_(mcast_sw_if_index)                            \
-_(encap_fib_index)                              \
-_(decap_next_index)                             \
-_(local)                                        \
-_(remote)					\
-_(l3_mode)
-
-static int
-geneve_rewrite (geneve_tunnel_t * t, bool is_ip6)
-{
-  union
-  {
-    ip4_geneve_header_t *h4;
-    ip6_geneve_header_t *h6;
-    u8 *rw;
-  } r =
-  {
-  .rw = 0};
-  int len = is_ip6 ? sizeof *r.h6 : sizeof *r.h4;
-#if SUPPORT_OPTIONS_HEADER==1
-  len += t->options_len;
-#endif
-
-  vec_validate_aligned (r.rw, len - 1, CLIB_CACHE_LINE_BYTES);
-
-  udp_header_t *udp;
-  geneve_header_t *geneve;
-  /* Fixed portion of the (outer) ip header */
-  if (!is_ip6)
-    {
-      ip4_header_t *ip = &r.h4->ip4;
-      udp = &r.h4->udp, geneve = &r.h4->geneve;
-      ip->ip_version_and_header_length = 0x45;
-      ip->ttl = 254;
-      ip->protocol = IP_PROTOCOL_UDP;
-
-      ip->src_address = t->local.ip4;
-      ip->dst_address = t->remote.ip4;
-
-      /* we fix up the ip4 header length and checksum after-the-fact */
-      ip->checksum = ip4_header_checksum (ip);
-    }
-  else
-    {
-      ip6_header_t *ip = &r.h6->ip6;
-      udp = &r.h6->udp, geneve = &r.h6->geneve;
-      ip->ip_version_traffic_class_and_flow_label =
-	clib_host_to_net_u32 (6 << 28);
-      ip->hop_limit = 255;
-      ip->protocol = IP_PROTOCOL_UDP;
-
-      ip->src_address = t->local.ip6;
-      ip->dst_address = t->remote.ip6;
-    }
-
-  /* UDP header, randomize local port on something, maybe? */
-  udp->src_port = clib_host_to_net_u16 (5251);
-  udp->dst_port = clib_host_to_net_u16 (UDP_DST_PORT_geneve);
-
-  /* GENEVE header */
-  vnet_set_geneve_version (geneve, GENEVE_VERSION);
-#if SUPPORT_OPTIONS_HEADER==1
-  vnet_set_geneve_options_len (geneve, t->options_len);
-#else
-  vnet_set_geneve_options_len (geneve, 0);
-#endif
-  vnet_set_geneve_oamframe_bit (geneve, 0);
-  vnet_set_geneve_critical_bit (geneve, 0);
-  vnet_set_geneve_protocol (geneve, GENEVE_ETH_PROTOCOL);
-
-  vnet_geneve_hdr_1word_hton (geneve);
-
-  vnet_set_geneve_vni (geneve, t->vni);
-
-  t->rewrite = r.rw;
-  return (0);
-}
-
-static bool
-geneve_decap_next_is_valid (geneve_main_t * vxm, u32 is_ip6,
-			    u32 decap_next_index)
-{
-  vlib_main_t *vm = vxm->vlib_main;
-  u32 input_idx =
-    (!is_ip6) ? geneve4_input_node.index : geneve6_input_node.index;
-  vlib_node_runtime_t *r = vlib_node_get_runtime (vm, input_idx);
-
-  return decap_next_index < r->n_next_nodes;
-}
-
-typedef union
-{
-  struct
-  {
-    fib_node_index_t mfib_entry_index;
-    adj_index_t mcast_adj_index;
-  };
-  u64 as_u64;
-} __clib_packed mcast_shared_t;
-
-static inline mcast_shared_t
-mcast_shared_get (ip46_address_t * ip)
-{
-  ASSERT (ip46_address_is_multicast (ip));
-  uword *p = hash_get_mem (geneve_main.mcast_shared, ip);
-  ALWAYS_ASSERT (p);
-  return (mcast_shared_t)
-  {
-  .as_u64 = *p};
-}
-
-static inline void
-mcast_shared_add (ip46_address_t * remote,
-		  fib_node_index_t mfei, adj_index_t ai)
-{
-  mcast_shared_t new_ep = {
-    .mcast_adj_index = ai,
-    .mfib_entry_index = mfei,
-  };
-
-  hash_set_mem_alloc (&geneve_main.mcast_shared, remote, new_ep.as_u64);
-}
-
-static inline void
-mcast_shared_remove (ip46_address_t * remote)
-{
-  mcast_shared_t ep = mcast_shared_get (remote);
-
-  adj_unlock (ep.mcast_adj_index);
-  mfib_table_entry_delete_index (ep.mfib_entry_index, MFIB_SOURCE_GENEVE);
-
-  hash_unset_mem_free (&geneve_main.mcast_shared, remote);
-}
-
-int vnet_geneve_add_del_tunnel
-  (vnet_geneve_add_del_tunnel_args_t * a, u32 * sw_if_indexp)
-{
-  geneve_main_t *vxm = &geneve_main;
-  geneve_tunnel_t *t = 0;
-  vnet_main_t *vnm = vxm->vnet_main;
-  uword *p;
-  u32 hw_if_index = ~0;
-  u32 sw_if_index = ~0;
-  int rv;
-  geneve4_tunnel_key_t key4;
-  geneve6_tunnel_key_t key6;
-  u32 is_ip6 = a->is_ip6;
-
-  if (!is_ip6)
-    {
-      key4.remote = a->remote.ip4.as_u32;
-      key4.vni = clib_host_to_net_u32 (a->vni << GENEVE_VNI_SHIFT);
-      p = hash_get (vxm->geneve4_tunnel_by_key, key4.as_u64);
-    }
-  else
-    {
-      key6.remote = a->remote.ip6;
-      key6.vni = clib_host_to_net_u32 (a->vni << GENEVE_VNI_SHIFT);
-      p = hash_get_mem (vxm->geneve6_tunnel_by_key, &key6);
-    }
-
-  if (a->is_add)
-    {
-      l2input_main_t *l2im = &l2input_main;
-
-      /* adding a tunnel: tunnel must not already exist */
-      if (p)
-	return VNET_API_ERROR_TUNNEL_EXIST;
-
-      /*if not set explicitly, default to l2 */
-      if (a->decap_next_index == ~0)
-	a->decap_next_index = GENEVE_INPUT_NEXT_L2_INPUT;
-      if (!geneve_decap_next_is_valid (vxm, is_ip6, a->decap_next_index))
-	return VNET_API_ERROR_INVALID_DECAP_NEXT;
-
-      pool_get_aligned (vxm->tunnels, t, CLIB_CACHE_LINE_BYTES);
-      clib_memset (t, 0, sizeof (*t));
-
-      /* copy from arg structure */
-#define _(x) t->x = a->x;
-      foreach_copy_field;
-#undef _
-
-      rv = geneve_rewrite (t, is_ip6);
-      if (rv)
-	{
-	  pool_put (vxm->tunnels, t);
-	  return rv;
-	}
-
-      /* copy the key */
-      if (is_ip6)
-	hash_set_mem_alloc (&vxm->geneve6_tunnel_by_key, &key6,
-			    t - vxm->tunnels);
-      else
-	hash_set (vxm->geneve4_tunnel_by_key, key4.as_u64, t - vxm->tunnels);
-
-      vnet_hw_interface_t *hi;
-      if (a->l3_mode)
-	{
-	  u32 t_idx = t - vxm->tunnels;
-	  u8 address[6] =
-	    { 0xd0, 0x0b, 0xee, 0xd0, (u8) (t_idx >> 8), (u8) t_idx };
-	  clib_error_t *error =
-	    ethernet_register_interface (vnm, geneve_device_class.index,
-					 t_idx,
-					 address, &hw_if_index, 0);
-	  if (error)
-	    {
-	      clib_error_report (error);
-	      return VNET_API_ERROR_INVALID_REGISTRATION;
-	    }
-	}
-      else
-	{
-	  hw_if_index = vnet_register_interface
-	    (vnm, geneve_device_class.index, t - vxm->tunnels,
-	     geneve_hw_class.index, t - vxm->tunnels);
-	}
-
-      hi = vnet_get_hw_interface (vnm, hw_if_index);
-
-      /* Set geneve tunnel output node */
-      u32 encap_index = !is_ip6 ?
-	geneve4_encap_node.index : geneve6_encap_node.index;
-      vnet_set_interface_output_node (vnm, hw_if_index, encap_index);
-
-      t->hw_if_index = hw_if_index;
-      t->sw_if_index = sw_if_index = hi->sw_if_index;
-
-      vec_validate_init_empty (vxm->tunnel_index_by_sw_if_index, sw_if_index,
-			       ~0);
-      vxm->tunnel_index_by_sw_if_index[sw_if_index] = t - vxm->tunnels;
-
-      /* setup l2 input config with l2 feature and bd 0 to drop packet */
-      vec_validate (l2im->configs, sw_if_index);
-      l2im->configs[sw_if_index].feature_bitmap = L2INPUT_FEAT_DROP;
-      l2im->configs[sw_if_index].bd_index = 0;
-
-      vnet_sw_interface_t *si = vnet_get_sw_interface (vnm, sw_if_index);
-      si->flags &= ~VNET_SW_INTERFACE_FLAG_HIDDEN;
-      vnet_sw_interface_set_flags (vnm, sw_if_index,
-				   VNET_SW_INTERFACE_FLAG_ADMIN_UP);
-
-      fib_node_init (&t->node, FIB_NODE_TYPE_GENEVE_TUNNEL);
-      fib_prefix_t tun_remote_pfx;
-      vnet_flood_class_t flood_class = VNET_FLOOD_CLASS_TUNNEL_NORMAL;
-
-      fib_prefix_from_ip46_addr (&t->remote, &tun_remote_pfx);
-      if (!ip46_address_is_multicast (&t->remote))
-	{
-	  /* Unicast tunnel -
-	   * source the FIB entry for the tunnel's destination
-	   * and become a child thereof. The tunnel will then get poked
-	   * when the forwarding for the entry updates, and the tunnel can
-	   * re-stack accordingly
-	   */
-	  vtep_addr_ref (&vxm->vtep_table, t->encap_fib_index, &t->local);
-	  t->fib_entry_index = fib_entry_track (t->encap_fib_index,
-						&tun_remote_pfx,
-						FIB_NODE_TYPE_GENEVE_TUNNEL,
-						t - vxm->tunnels,
-						&t->sibling_index);
-	  geneve_tunnel_restack_dpo (t);
-	}
-      else
-	{
-	  /* Multicast tunnel -
-	   * as the same mcast group can be used for mutiple mcast tunnels
-	   * with different VNIs, create the output fib adjecency only if
-	   * it does not already exist
-	   */
-	  fib_protocol_t fp = fib_ip_proto (is_ip6);
-
-	  if (vtep_addr_ref (&vxm->vtep_table,
-			     t->encap_fib_index, &t->remote) == 1)
-	    {
-	      fib_node_index_t mfei;
-	      adj_index_t ai;
-	      fib_route_path_t path = {
-		.frp_proto = fib_proto_to_dpo (fp),
-		.frp_addr = zero_addr,
-		.frp_sw_if_index = 0xffffffff,
-		.frp_fib_index = ~0,
-		.frp_weight = 1,
-		.frp_flags = FIB_ROUTE_PATH_LOCAL,
-		.frp_mitf_flags = MFIB_ITF_FLAG_FORWARD,
-	      };
-	      const mfib_prefix_t mpfx = {
-		.fp_proto = fp,
-		.fp_len = (is_ip6 ? 128 : 32),
-		.fp_grp_addr = tun_remote_pfx.fp_addr,
-	      };
-
-	      /*
-	       * Setup the (*,G) to receive traffic on the mcast group
-	       *  - the forwarding interface is for-us
-	       *  - the accepting interface is that from the API
-	       */
-	      mfib_table_entry_path_update (t->encap_fib_index,
-					    &mpfx, MFIB_SOURCE_GENEVE, &path);
-
-	      path.frp_sw_if_index = a->mcast_sw_if_index;
-	      path.frp_flags = FIB_ROUTE_PATH_FLAG_NONE;
-	      path.frp_mitf_flags = MFIB_ITF_FLAG_ACCEPT;
-	      mfei = mfib_table_entry_path_update (t->encap_fib_index,
-						   &mpfx,
-						   MFIB_SOURCE_GENEVE, &path);
-
-	      /*
-	       * Create the mcast adjacency to send traffic to the group
-	       */
-	      ai = adj_mcast_add_or_lock (fp,
-					  fib_proto_to_link (fp),
-					  a->mcast_sw_if_index);
-
-	      /*
-	       * create a new end-point
-	       */
-	      mcast_shared_add (&t->remote, mfei, ai);
-	    }
-
-	  dpo_id_t dpo = DPO_INVALID;
-	  mcast_shared_t ep = mcast_shared_get (&t->remote);
-
-	  /* Stack shared mcast remote mac addr rewrite on encap */
-	  dpo_set (&dpo, DPO_ADJACENCY_MCAST,
-		   fib_proto_to_dpo (fp), ep.mcast_adj_index);
-
-	  dpo_stack_from_node (encap_index, &t->next_dpo, &dpo);
-	  dpo_reset (&dpo);
-	  flood_class = VNET_FLOOD_CLASS_TUNNEL_MASTER;
-	}
-
-      vnet_get_sw_interface (vnet_get_main (), sw_if_index)->flood_class =
-	flood_class;
-    }
-  else
-    {
-      /* deleting a tunnel: tunnel must exist */
-      if (!p)
-	return VNET_API_ERROR_NO_SUCH_ENTRY;
-
-      t = pool_elt_at_index (vxm->tunnels, p[0]);
-
-      sw_if_index = t->sw_if_index;
-      vnet_sw_interface_set_flags (vnm, t->sw_if_index, 0 /* down */ );
-      vnet_sw_interface_t *si = vnet_get_sw_interface (vnm, t->sw_if_index);
-      si->flags |= VNET_SW_INTERFACE_FLAG_HIDDEN;
-
-      /* make sure tunnel is removed from l2 bd or xconnect */
-      set_int_l2_mode (vxm->vlib_main, vnm, MODE_L3, t->sw_if_index, 0,
-		       L2_BD_PORT_TYPE_NORMAL, 0, 0);
-
-      if (t->l3_mode)
-	ethernet_delete_interface (vnm, t->hw_if_index);
-      else
-	vnet_delete_hw_interface (vnm, t->hw_if_index);
-
-      vxm->tunnel_index_by_sw_if_index[t->sw_if_index] = ~0;
-
-      if (!is_ip6)
-	hash_unset (vxm->geneve4_tunnel_by_key, key4.as_u64);
-      else
-	hash_unset_mem_free (&vxm->geneve6_tunnel_by_key, &key6);
-
-      if (!ip46_address_is_multicast (&t->remote))
-	{
-	  vtep_addr_unref (&vxm->vtep_table, t->encap_fib_index, &t->local);
-	  fib_entry_untrack (t->fib_entry_index, t->sibling_index);
-	}
-      else if (vtep_addr_unref (&vxm->vtep_table,
-				t->encap_fib_index, &t->remote) == 0)
-	{
-	  mcast_shared_remove (&t->remote);
-	}
-
-      fib_node_deinit (&t->node);
-      vec_free (t->rewrite);
-      pool_put (vxm->tunnels, t);
-    }
-
-  if (sw_if_indexp)
-    *sw_if_indexp = sw_if_index;
-
-  if (a->is_add)
-    {
-      /* register udp ports */
-      if (!is_ip6 && !udp_is_valid_dst_port (UDP_DST_PORT_geneve, 1))
-	udp_register_dst_port (vxm->vlib_main, UDP_DST_PORT_geneve,
-			       geneve4_input_node.index, 1);
-      if (is_ip6 && !udp_is_valid_dst_port (UDP_DST_PORT_geneve6, 0))
-	udp_register_dst_port (vxm->vlib_main, UDP_DST_PORT_geneve6,
-			       geneve6_input_node.index, 0);
-    }
-
-  return 0;
-}
-
-static uword
-get_decap_next_for_node (u32 node_index, u32 ipv4_set)
-{
-  geneve_main_t *vxm = &geneve_main;
-  vlib_main_t *vm = vxm->vlib_main;
-  uword input_node = (ipv4_set) ? geneve4_input_node.index :
-    geneve6_input_node.index;
-
-  return vlib_node_add_next (vm, input_node, node_index);
-}
-
-static uword
-unformat_decap_next (unformat_input_t * input, va_list * args)
-{
-  u32 *result = va_arg (*args, u32 *);
-  u32 ipv4_set = va_arg (*args, int);
-  geneve_main_t *vxm = &geneve_main;
-  vlib_main_t *vm = vxm->vlib_main;
-  u32 node_index;
-  u32 tmp;
-
-  if (unformat (input, "l2"))
-    *result = GENEVE_INPUT_NEXT_L2_INPUT;
-  else if (unformat (input, "node %U", unformat_vlib_node, vm, &node_index))
-    *result = get_decap_next_for_node (node_index, ipv4_set);
-  else if (unformat (input, "%d", &tmp))
-    *result = tmp;
-  else
-    return 0;
-  return 1;
-}
-
-static clib_error_t *
-geneve_add_del_tunnel_command_fn (vlib_main_t * vm,
-				  unformat_input_t * input,
-				  vlib_cli_command_t * cmd)
-{
-  unformat_input_t _line_input, *line_input = &_line_input;
-  ip46_address_t local, remote;
-  u8 is_add = 1;
-  u8 local_set = 0;
-  u8 remote_set = 0;
-  u8 grp_set = 0;
-  u8 ipv4_set = 0;
-  u8 ipv6_set = 0;
-  u8 l3_mode = 0;
-  u32 encap_fib_index = 0;
-  u32 mcast_sw_if_index = ~0;
-  u32 decap_next_index = GENEVE_INPUT_NEXT_L2_INPUT;
-  u32 vni = 0;
-  u32 tmp;
-  int rv;
-  vnet_geneve_add_del_tunnel_args_t _a, *a = &_a;
-  u32 tunnel_sw_if_index;
-  clib_error_t *error = NULL;
-
-  /* Cant "universally zero init" (={0}) due to GCC bug 53119 */
-  clib_memset (&local, 0, sizeof local);
-  clib_memset (&remote, 0, sizeof remote);
-
-  /* Get a line of input. */
-  if (!unformat_user (input, unformat_line_input, line_input))
-    return 0;
-
-  while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
-    {
-      if (unformat (line_input, "del"))
-	{
-	  is_add = 0;
-	}
-      else if (unformat (line_input, "local %U",
-			 unformat_ip4_address, &local.ip4))
-	{
-	  local_set = 1;
-	  ipv4_set = 1;
-	}
-      else if (unformat (line_input, "remote %U",
-			 unformat_ip4_address, &remote.ip4))
-	{
-	  remote_set = 1;
-	  ipv4_set = 1;
-	}
-      else if (unformat (line_input, "local %U",
-			 unformat_ip6_address, &local.ip6))
-	{
-	  local_set = 1;
-	  ipv6_set = 1;
-	}
-      else if (unformat (line_input, "remote %U",
-			 unformat_ip6_address, &remote.ip6))
-	{
-	  remote_set = 1;
-	  ipv6_set = 1;
-	}
-      else if (unformat (line_input, "group %U %U",
-			 unformat_ip4_address, &remote.ip4,
-			 unformat_vnet_sw_interface,
-			 vnet_get_main (), &mcast_sw_if_index))
-	{
-	  grp_set = remote_set = 1;
-	  ipv4_set = 1;
-	}
-      else if (unformat (line_input, "group %U %U",
-			 unformat_ip6_address, &remote.ip6,
-			 unformat_vnet_sw_interface,
-			 vnet_get_main (), &mcast_sw_if_index))
-	{
-	  grp_set = remote_set = 1;
-	  ipv6_set = 1;
-	}
-      else if (unformat (line_input, "encap-vrf-id %d", &tmp))
-	{
-	  encap_fib_index = fib_table_find (fib_ip_proto (ipv6_set), tmp);
-	  if (encap_fib_index == ~0)
-	    {
-	      error =
-		clib_error_return (0, "nonexistent encap-vrf-id %d", tmp);
-	      goto done;
-	    }
-	}
-      else if (unformat (line_input, "decap-next %U", unformat_decap_next,
-			 &decap_next_index, ipv4_set))
-	;
-      else if (unformat (line_input, "vni %d", &vni))
-	{
-	  if (vni >> 24)
-	    {
-	      error = clib_error_return (0, "vni %d out of range", vni);
-	      goto done;
-	    }
-	}
-      else if (unformat (line_input, "l3-mode"))
-	{
-	  l3_mode = 1;
-	}
-      else
-	{
-	  error = clib_error_return (0, "parse error: '%U'",
-				     format_unformat_error, line_input);
-	  goto done;
-	}
-    }
-
-  if (local_set == 0)
-    {
-      error = clib_error_return (0, "tunnel local address not specified");
-      goto done;
-    }
-
-  if (remote_set == 0)
-    {
-      error = clib_error_return (0, "tunnel remote address not specified");
-      goto done;
-    }
-
-  if (grp_set && !ip46_address_is_multicast (&remote))
-    {
-      error = clib_error_return (0, "tunnel group address not multicast");
-      goto done;
-    }
-
-  if (grp_set == 0 && ip46_address_is_multicast (&remote))
-    {
-      error = clib_error_return (0, "remote address must be unicast");
-      goto done;
-    }
-
-  if (grp_set && mcast_sw_if_index == ~0)
-    {
-      error = clib_error_return (0, "tunnel nonexistent multicast device");
-      goto done;
-    }
-
-  if (ipv4_set && ipv6_set)
-    {
-      error = clib_error_return (0, "both IPv4 and IPv6 addresses specified");
-      goto done;
-    }
-
-  if (ip46_address_cmp (&local, &remote) == 0)
-    {
-      error =
-	clib_error_return (0, "local and remote addresses are identical");
-      goto done;
-    }
-
-  if (decap_next_index == ~0)
-    {
-      error = clib_error_return (0, "next node not found");
-      goto done;
-    }
-
-  if (vni == 0)
-    {
-      error = clib_error_return (0, "vni not specified");
-      goto done;
-    }
-
-  clib_memset (a, 0, sizeof (*a));
-
-  a->is_add = is_add;
-  a->is_ip6 = ipv6_set;
-
-#define _(x) a->x = x;
-  foreach_copy_field;
-#undef _
-
-  rv = vnet_geneve_add_del_tunnel (a, &tunnel_sw_if_index);
-
-  switch (rv)
-    {
-    case 0:
-      if (is_add)
-	vlib_cli_output (vm, "%U\n", format_vnet_sw_if_index_name,
-			 vnet_get_main (), tunnel_sw_if_index);
-      break;
-
-    case VNET_API_ERROR_TUNNEL_EXIST:
-      error = clib_error_return (0, "tunnel already exists...");
-      goto done;
-
-    case VNET_API_ERROR_NO_SUCH_ENTRY:
-      error = clib_error_return (0, "tunnel does not exist...");
-      goto done;
-
-    default:
-      error = clib_error_return
-	(0, "vnet_geneve_add_del_tunnel returned %d", rv);
-      goto done;
-    }
-
-done:
-  unformat_free (line_input);
-
-  return error;
-}
-
-/*?
- * Add or delete a GENEVE Tunnel.
- *
- * GENEVE provides the features needed to allow L2 bridge domains (BDs)
- * to span multiple servers. This is done by building an L2 overlay on
- * top of an L3 network underlay using GENEVE tunnels.
- *
- * This makes it possible for servers to be co-located in the same data
- * center or be separated geographically as long as they are reachable
- * through the underlay L3 network.
- *
- * You can refer to this kind of L2 overlay bridge domain as a GENEVE
- * segment.
- *
- * @cliexpar
- * Example of how to create a GENEVE Tunnel:
- * @cliexcmd{create geneve tunnel local 10.0.3.1 remote 10.0.3.3 vni 13 encap-vrf-id 7}
- * Example of how to delete a GENEVE Tunnel:
- * @cliexcmd{create geneve tunnel local 10.0.3.1 remote 10.0.3.3 vni 13 del}
- ?*/
-/* *INDENT-OFF* */
-VLIB_CLI_COMMAND (create_geneve_tunnel_command, static) = {
-  .path = "create geneve tunnel",
-  .short_help =
-  "create geneve tunnel local <local-vtep-addr>"
-  " {remote <remote-vtep-addr>|group <mcast-vtep-addr> <intf-name>} vni <nn>"
-  " [encap-vrf-id <nn>] [decap-next [l2|node <name>]] [l3-mode] [del]",
-  .function = geneve_add_del_tunnel_command_fn,
-};
-/* *INDENT-ON* */
-
-static clib_error_t *
-show_geneve_tunnel_command_fn (vlib_main_t * vm,
-			       unformat_input_t * input,
-			       vlib_cli_command_t * cmd)
-{
-  geneve_main_t *vxm = &geneve_main;
-  geneve_tunnel_t *t;
-
-  if (pool_elts (vxm->tunnels) == 0)
-    vlib_cli_output (vm, "No geneve tunnels configured...");
-
-  pool_foreach (t, vxm->tunnels, (
-				   {
-				   vlib_cli_output (vm, "%U",
-						    format_geneve_tunnel, t);
-				   }
-		));
-
-  return 0;
-}
-
-/*?
- * Display all the GENEVE Tunnel entries.
- *
- * @cliexpar
- * Example of how to display the GENEVE Tunnel entries:
- * @cliexstart{show geneve tunnel}
- * [0] local 10.0.3.1 remote 10.0.3.3 vni 13 encap_fib_index 0 sw_if_index 5 decap_next l2
- * @cliexend
- ?*/
-/* *INDENT-OFF* */
-VLIB_CLI_COMMAND (show_geneve_tunnel_command, static) = {
-    .path = "show geneve tunnel",
-    .short_help = "show geneve tunnel",
-    .function = show_geneve_tunnel_command_fn,
-};
-/* *INDENT-ON* */
-
-
-void
-vnet_int_geneve_bypass_mode (u32 sw_if_index, u8 is_ip6, u8 is_enable)
-{
-  if (is_ip6)
-    vnet_feature_enable_disable ("ip6-unicast", "ip6-geneve-bypass",
-				 sw_if_index, is_enable, 0, 0);
-  else
-    vnet_feature_enable_disable ("ip4-unicast", "ip4-geneve-bypass",
-				 sw_if_index, is_enable, 0, 0);
-}
-
-
-static clib_error_t *
-set_ip_geneve_bypass (u32 is_ip6,
-		      unformat_input_t * input, vlib_cli_command_t * cmd)
-{
-  unformat_input_t _line_input, *line_input = &_line_input;
-  vnet_main_t *vnm = vnet_get_main ();
-  clib_error_t *error = 0;
-  u32 sw_if_index, is_enable;
-
-  sw_if_index = ~0;
-  is_enable = 1;
-
-  if (!unformat_user (input, unformat_line_input, line_input))
-    return 0;
-
-  while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
-    {
-      if (unformat_user
-	  (line_input, unformat_vnet_sw_interface, vnm, &sw_if_index))
-	;
-      else if (unformat (line_input, "del"))
-	is_enable = 0;
-      else
-	{
-	  error = unformat_parse_error (line_input);
-	  goto done;
-	}
-    }
-
-  if (~0 == sw_if_index)
-    {
-      error = clib_error_return (0, "unknown interface `%U'",
-				 format_unformat_error, line_input);
-      goto done;
-    }
-
-  vnet_int_geneve_bypass_mode (sw_if_index, is_ip6, is_enable);
-
-done:
-  unformat_free (line_input);
-
-  return error;
-}
-
-static clib_error_t *
-set_ip4_geneve_bypass (vlib_main_t * vm,
-		       unformat_input_t * input, vlib_cli_command_t * cmd)
-{
-  return set_ip_geneve_bypass (0, input, cmd);
-}
-
-/*?
- * This command adds the 'ip4-geneve-bypass' graph node for a given interface.
- * By adding the IPv4 geneve-bypass graph node to an interface, the node checks
- *  for and validate input geneve packet and bypass ip4-lookup, ip4-local,
- * ip4-udp-lookup nodes to speedup geneve packet forwarding. This node will
- * cause extra overhead to for non-geneve packets which is kept at a minimum.
- *
- * @cliexpar
- * @parblock
- * Example of graph node before ip4-geneve-bypass is enabled:
- * @cliexstart{show vlib graph ip4-geneve-bypass}
- *            Name                      Next                    Previous
- * ip4-geneve-bypass                error-drop [0]
- *                                geneve4-input [1]
- *                                 ip4-lookup [2]
- * @cliexend
- *
- * Example of how to enable ip4-geneve-bypass on an interface:
- * @cliexcmd{set interface ip geneve-bypass GigabitEthernet2/0/0}
- *
- * Example of graph node after ip4-geneve-bypass is enabled:
- * @cliexstart{show vlib graph ip4-geneve-bypass}
- *            Name                      Next                    Previous
- * ip4-geneve-bypass                error-drop [0]               ip4-input
- *                                geneve4-input [1]        ip4-input-no-checksum
- *                                 ip4-lookup [2]
- * @cliexend
- *
- * Example of how to display the feature enabed on an interface:
- * @cliexstart{show ip interface features GigabitEthernet2/0/0}
- * IP feature paths configured on GigabitEthernet2/0/0...
- * ...
- * ipv4 unicast:
- *   ip4-geneve-bypass
- *   ip4-lookup
- * ...
- * @cliexend
- *
- * Example of how to disable ip4-geneve-bypass on an interface:
- * @cliexcmd{set interface ip geneve-bypass GigabitEthernet2/0/0 del}
- * @endparblock
-?*/
-/* *INDENT-OFF* */
-VLIB_CLI_COMMAND (set_interface_ip_geneve_bypass_command, static) = {
-  .path = "set interface ip geneve-bypass",
-  .function = set_ip4_geneve_bypass,
-  .short_help = "set interface ip geneve-bypass <interface> [del]",
-};
-/* *INDENT-ON* */
-
-static clib_error_t *
-set_ip6_geneve_bypass (vlib_main_t * vm,
-		       unformat_input_t * input, vlib_cli_command_t * cmd)
-{
-  return set_ip_geneve_bypass (1, input, cmd);
-}
-
-/*?
- * This command adds the 'ip6-geneve-bypass' graph node for a given interface.
- * By adding the IPv6 geneve-bypass graph node to an interface, the node checks
- *  for and validate input geneve packet and bypass ip6-lookup, ip6-local,
- * ip6-udp-lookup nodes to speedup geneve packet forwarding. This node will
- * cause extra overhead to for non-geneve packets which is kept at a minimum.
- *
- * @cliexpar
- * @parblock
- * Example of graph node before ip6-geneve-bypass is enabled:
- * @cliexstart{show vlib graph ip6-geneve-bypass}
- *            Name                      Next                    Previous
- * ip6-geneve-bypass                error-drop [0]
- *                                geneve6-input [1]
- *                                 ip6-lookup [2]
- * @cliexend
- *
- * Example of how to enable ip6-geneve-bypass on an interface:
- * @cliexcmd{set interface ip6 geneve-bypass GigabitEthernet2/0/0}
- *
- * Example of graph node after ip6-geneve-bypass is enabled:
- * @cliexstart{show vlib graph ip6-geneve-bypass}
- *            Name                      Next                    Previous
- * ip6-geneve-bypass                error-drop [0]               ip6-input
- *                                geneve6-input [1]        ip4-input-no-checksum
- *                                 ip6-lookup [2]
- * @cliexend
- *
- * Example of how to display the feature enabed on an interface:
- * @cliexstart{show ip interface features GigabitEthernet2/0/0}
- * IP feature paths configured on GigabitEthernet2/0/0...
- * ...
- * ipv6 unicast:
- *   ip6-geneve-bypass
- *   ip6-lookup
- * ...
- * @cliexend
- *
- * Example of how to disable ip6-geneve-bypass on an interface:
- * @cliexcmd{set interface ip6 geneve-bypass GigabitEthernet2/0/0 del}
- * @endparblock
-?*/
-/* *INDENT-OFF* */
-VLIB_CLI_COMMAND (set_interface_ip6_geneve_bypass_command, static) = {
-  .path = "set interface ip6 geneve-bypass",
-  .function = set_ip6_geneve_bypass,
-  .short_help = "set interface ip6 geneve-bypass <interface> [del]",
-};
-/* *INDENT-ON* */
-
-clib_error_t *
-geneve_init (vlib_main_t * vm)
-{
-  geneve_main_t *vxm = &geneve_main;
-
-  vxm->vnet_main = vnet_get_main ();
-  vxm->vlib_main = vm;
-
-  /* initialize the ip6 hash */
-  vxm->geneve6_tunnel_by_key = hash_create_mem (0,
-						sizeof (geneve6_tunnel_key_t),
-						sizeof (uword));
-  vxm->vtep_table = vtep_table_create ();
-  vxm->mcast_shared = hash_create_mem (0,
-				       sizeof (ip46_address_t),
-				       sizeof (mcast_shared_t));
-
-  fib_node_register_type (FIB_NODE_TYPE_GENEVE_TUNNEL, &geneve_vft);
-
-  return 0;
-}
-
-VLIB_INIT_FUNCTION (geneve_init);
-
-/*
- * fd.io coding-style-patch-verification: ON
- *
- * Local Variables:
- * eval: (c-set-style "gnu")
- * End:
- */