dhcp: Move to plugin

Type: feature

Change-Id: I3fe27a8ef577741d9a5c4f090ec91cf68fb44fe3
Signed-off-by: Neale Ranns <nranns@cisco.com>

1 files changed, 871 insertions, 0 deletions

diff --git a/src/plugins/dhcp/dhcp_api.c b/src/plugins/dhcp/dhcp_api.c
new file mode 100644
index 00000000000..61efaba09b0
--- /dev/null
+++ b/src/plugins/dhcp/dhcp_api.c
@@ -0,0 +1,871 @@
+/*
+ *------------------------------------------------------------------
+ * dhcp_api.c - dhcp api
+ *
+ * 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/vnet.h>
+#include <vlibmemory/api.h>
+
+#include <vnet/interface.h>
+#include <vnet/api_errno.h>
+#include <dhcp/dhcp_proxy.h>
+#include <dhcp/client.h>
+#include <dhcp/dhcp6_pd_client_dp.h>
+#include <dhcp/dhcp6_ia_na_client_dp.h>
+#include <dhcp/dhcp6_client_common_dp.h>
+#include <vnet/fib/fib_table.h>
+#include <vnet/ip/ip_types_api.h>
+
+/* define message IDs */
+#include <vnet/format_fns.h>
+#include <dhcp/dhcp.api_enum.h>
+#include <dhcp/dhcp.api_types.h>
+
+/**
+ * Base message ID fot the plugin
+ */
+static u32 dhcp_base_msg_id;
+#define REPLY_MSG_ID_BASE dhcp_base_msg_id
+
+#include <vlibapi/api_helper_macros.h>
+
+#define  DHCP_PLUGIN_VERSION_MAJOR 1
+#define  DHCP_PLUGIN_VERSION_MINOR 0
+
+static void
+vl_api_dhcp_plugin_get_version_t_handler (vl_api_dhcp_plugin_get_version_t *
+					  mp)
+{
+  vl_api_dhcp_plugin_get_version_reply_t *rmp;
+  int msg_size = sizeof (*rmp);
+  vl_api_registration_t *reg;
+
+  reg = vl_api_client_index_to_registration (mp->client_index);
+  if (!reg)
+    return;
+
+  rmp = vl_msg_api_alloc (msg_size);
+  clib_memset (rmp, 0, msg_size);
+  rmp->_vl_msg_id =
+    ntohs (VL_API_DHCP_PLUGIN_GET_VERSION_REPLY + REPLY_MSG_ID_BASE);
+  rmp->context = mp->context;
+  rmp->major = htonl (DHCP_PLUGIN_VERSION_MAJOR);
+  rmp->minor = htonl (DHCP_PLUGIN_VERSION_MINOR);
+
+  vl_api_send_msg (reg, (u8 *) rmp);
+}
+
+static void
+vl_api_dhcp_plugin_control_ping_t_handler (vl_api_dhcp_plugin_control_ping_t *
+					   mp)
+{
+  vl_api_dhcp_plugin_control_ping_reply_t *rmp;
+  int rv = 0;
+
+  /* *INDENT-OFF* */
+  REPLY_MACRO2 (VL_API_DHCP_PLUGIN_CONTROL_PING_REPLY,
+  ({
+    rmp->vpe_pid = ntohl (getpid ());
+  }));
+  /* *INDENT-ON* */
+}
+
+static void
+vl_api_dhcp6_duid_ll_set_t_handler (vl_api_dhcp6_duid_ll_set_t * mp)
+{
+  vl_api_dhcp6_duid_ll_set_reply_t *rmp;
+  dhcpv6_duid_ll_string_t *duid;
+  int rv = 0;
+
+  duid = (dhcpv6_duid_ll_string_t *) mp->duid_ll;
+  if (duid->duid_type != htonl (DHCPV6_DUID_LL))
+    {
+      rv = VNET_API_ERROR_INVALID_VALUE;
+      goto reply;
+    }
+  clib_memcpy (&client_duid, &duid, sizeof (client_duid));
+
+reply:
+  REPLY_MACRO (VL_API_DHCP6_DUID_LL_SET_REPLY);
+}
+
+static void
+vl_api_dhcp_proxy_set_vss_t_handler (vl_api_dhcp_proxy_set_vss_t * mp)
+{
+  vl_api_dhcp_proxy_set_vss_reply_t *rmp;
+  u8 *vpn_ascii_id;
+  int rv;
+
+  mp->vpn_ascii_id[sizeof (mp->vpn_ascii_id) - 1] = 0;
+  vpn_ascii_id = format (0, "%s", mp->vpn_ascii_id);
+  rv =
+    dhcp_proxy_set_vss ((mp->is_ipv6 ? FIB_PROTOCOL_IP6 : FIB_PROTOCOL_IP4),
+			ntohl (mp->tbl_id), ntohl (mp->vss_type),
+			vpn_ascii_id, ntohl (mp->oui), ntohl (mp->vpn_index),
+			mp->is_add == 0);
+
+  REPLY_MACRO (VL_API_DHCP_PROXY_SET_VSS_REPLY);
+}
+
+
+static void vl_api_dhcp_proxy_config_t_handler
+  (vl_api_dhcp_proxy_config_t * mp)
+{
+  vl_api_dhcp_proxy_set_vss_reply_t *rmp;
+  ip46_address_t src, server;
+  int rv = -1;
+
+  if (mp->dhcp_src_address.af != mp->dhcp_server.af)
+    {
+      rv = VNET_API_ERROR_INVALID_ARGUMENT;
+      goto reply;
+    }
+
+  ip_address_decode (&mp->dhcp_src_address, &src);
+  ip_address_decode (&mp->dhcp_server, &server);
+
+  if (mp->dhcp_src_address.af == ADDRESS_IP4)
+    {
+      rv = dhcp4_proxy_set_server (&server,
+				   &src,
+				   (u32) ntohl (mp->rx_vrf_id),
+				   (u32) ntohl (mp->server_vrf_id),
+				   (int) (mp->is_add == 0));
+    }
+  else
+    {
+      rv = dhcp6_proxy_set_server (&server,
+				   &src,
+				   (u32) ntohl (mp->rx_vrf_id),
+				   (u32) ntohl (mp->server_vrf_id),
+				   (int) (mp->is_add == 0));
+    }
+
+reply:
+  REPLY_MACRO (VL_API_DHCP_PROXY_CONFIG_REPLY);
+}
+
+static void
+vl_api_dhcp_proxy_dump_t_handler (vl_api_dhcp_proxy_dump_t * mp)
+{
+  vl_api_registration_t *reg;
+
+  reg = vl_api_client_index_to_registration (mp->client_index);
+  if (!reg)
+    return;;
+
+  dhcp_proxy_dump ((mp->is_ip6 == 1 ?
+		    FIB_PROTOCOL_IP6 : FIB_PROTOCOL_IP4), reg, mp->context);
+}
+
+void
+dhcp_send_details (fib_protocol_t proto,
+		   void *opaque, u32 context, dhcp_proxy_t * proxy)
+{
+  vl_api_dhcp_proxy_details_t *mp;
+  vl_api_registration_t *reg = opaque;
+  vl_api_dhcp_server_t *v_server;
+  dhcp_server_t *server;
+  fib_table_t *s_fib;
+  dhcp_vss_t *vss;
+  u32 count;
+  size_t n;
+
+  count = vec_len (proxy->dhcp_servers);
+  n = sizeof (*mp) + (count * sizeof (vl_api_dhcp_server_t));
+  mp = vl_msg_api_alloc (n);
+  if (!mp)
+    return;
+  clib_memset (mp, 0, n);
+  mp->_vl_msg_id = ntohs (VL_API_DHCP_PROXY_DETAILS + REPLY_MSG_ID_BASE);
+  mp->context = context;
+  mp->count = count;
+
+  mp->is_ipv6 = (proto == FIB_PROTOCOL_IP6);
+  mp->rx_vrf_id =
+    htonl (dhcp_proxy_rx_table_get_table_id (proto, proxy->rx_fib_index));
+
+  vss = dhcp_get_vss_info (&dhcp_proxy_main, proxy->rx_fib_index, proto);
+
+  if (vss)
+    {
+      mp->vss_type = ntohl (vss->vss_type);
+      if (vss->vss_type == VSS_TYPE_ASCII)
+	{
+	  u32 id_len = vec_len (vss->vpn_ascii_id);
+	  clib_memcpy (mp->vss_vpn_ascii_id, vss->vpn_ascii_id, id_len);
+	}
+      else if (vss->vss_type == VSS_TYPE_VPN_ID)
+	{
+	  u32 oui = ((u32) vss->vpn_id[0] << 16) + ((u32) vss->vpn_id[1] << 8)
+	    + ((u32) vss->vpn_id[2]);
+	  u32 fib_id = ((u32) vss->vpn_id[3] << 24) +
+	    ((u32) vss->vpn_id[4] << 16) + ((u32) vss->vpn_id[5] << 8) +
+	    ((u32) vss->vpn_id[6]);
+	  mp->vss_oui = htonl (oui);
+	  mp->vss_fib_id = htonl (fib_id);
+	}
+    }
+  else
+    mp->vss_type = VSS_TYPE_INVALID;
+
+  vec_foreach_index (count, proxy->dhcp_servers)
+  {
+    server = &proxy->dhcp_servers[count];
+    v_server = &mp->servers[count];
+
+    s_fib = fib_table_get (server->server_fib_index, proto);
+
+    v_server->server_vrf_id = htonl (s_fib->ft_table_id);
+
+    if (mp->is_ipv6)
+      {
+	memcpy (&v_server->dhcp_server.un, &server->dhcp_server.ip6, 16);
+      }
+    else
+      {
+	/* put the address in the first bytes */
+	memcpy (&v_server->dhcp_server.un, &server->dhcp_server.ip4, 4);
+      }
+  }
+
+  if (mp->is_ipv6)
+    {
+      memcpy (&mp->dhcp_src_address.un, &proxy->dhcp_src_address.ip6, 16);
+    }
+  else
+    {
+      /* put the address in the first bytes */
+      memcpy (&mp->dhcp_src_address.un, &proxy->dhcp_src_address.ip4, 4);
+    }
+  vl_api_send_msg (reg, (u8 *) mp);
+}
+
+static void
+dhcp_client_lease_encode (vl_api_dhcp_lease_t * lease,
+			  const dhcp_client_t * client)
+{
+  size_t len;
+  u8 i;
+
+  lease->is_ipv6 = 0;		// only support IPv6 clients
+  lease->sw_if_index = ntohl (client->sw_if_index);
+  lease->state = ntohl (client->state);
+  len = clib_min (sizeof (lease->hostname) - 1, vec_len (client->hostname));
+  clib_memcpy (&lease->hostname, client->hostname, len);
+  lease->hostname[len] = 0;
+
+  lease->mask_width = client->subnet_mask_width;
+  clib_memcpy (&lease->host_address.un, (u8 *) & client->leased_address,
+	       sizeof (ip4_address_t));
+  clib_memcpy (&lease->router_address.un, (u8 *) & client->router_address,
+	       sizeof (ip4_address_t));
+
+  lease->count = vec_len (client->domain_server_address);
+  for (i = 0; i < lease->count; i++)
+    clib_memcpy (&lease->domain_server[i].address,
+		 (u8 *) & client->domain_server_address[i],
+		 sizeof (ip4_address_t));
+
+  clib_memcpy (&lease->host_mac[0], client->client_hardware_address, 6);
+}
+
+static void
+dhcp_client_data_encode (vl_api_dhcp_client_t * vclient,
+			 const dhcp_client_t * client)
+{
+  size_t len;
+
+  vclient->sw_if_index = ntohl (client->sw_if_index);
+  len = clib_min (sizeof (vclient->hostname) - 1, vec_len (client->hostname));
+  clib_memcpy (&vclient->hostname, client->hostname, len);
+  vclient->hostname[len] = 0;
+
+  len = clib_min (sizeof (vclient->id) - 1,
+		  vec_len (client->client_identifier));
+  clib_memcpy (&vclient->id, client->client_identifier, len);
+  vclient->id[len] = 0;
+
+  if (NULL != client->event_callback)
+    vclient->want_dhcp_event = 1;
+  else
+    vclient->want_dhcp_event = 0;
+  vclient->set_broadcast_flag = client->set_broadcast_flag;
+  vclient->dscp = ip_dscp_encode (client->dscp);
+  vclient->pid = client->pid;
+}
+
+static void
+dhcp_compl_event_callback (u32 client_index, const dhcp_client_t * client)
+{
+  vl_api_registration_t *reg;
+  vl_api_dhcp_compl_event_t *mp;
+
+  reg = vl_api_client_index_to_registration (client_index);
+  if (!reg)
+    return;
+
+  mp = vl_msg_api_alloc (sizeof (*mp));
+  mp->client_index = client_index;
+  mp->pid = client->pid;
+  dhcp_client_lease_encode (&mp->lease, client);
+
+  mp->_vl_msg_id = ntohs (VL_API_DHCP_COMPL_EVENT + REPLY_MSG_ID_BASE);
+
+  vl_api_send_msg (reg, (u8 *) mp);
+}
+
+static void vl_api_dhcp_client_config_t_handler
+  (vl_api_dhcp_client_config_t * mp)
+{
+  vlib_main_t *vm = vlib_get_main ();
+  vl_api_dhcp_client_config_reply_t *rmp;
+  u32 sw_if_index;
+  ip_dscp_t dscp;
+  int rv = 0;
+
+  VALIDATE_SW_IF_INDEX (&(mp->client));
+
+  sw_if_index = ntohl (mp->client.sw_if_index);
+  dscp = ip_dscp_decode (mp->client.dscp);
+
+  rv = dhcp_client_config (mp->is_add,
+			   mp->client_index,
+			   vm,
+			   sw_if_index,
+			   mp->client.hostname,
+			   mp->client.id,
+			   (mp->client.want_dhcp_event ?
+			    dhcp_compl_event_callback :
+			    NULL),
+			   mp->client.set_broadcast_flag,
+			   dscp, mp->client.pid);
+
+  BAD_SW_IF_INDEX_LABEL;
+  REPLY_MACRO (VL_API_DHCP_CLIENT_CONFIG_REPLY);
+}
+
+typedef struct dhcp_client_send_walk_ctx_t_
+{
+  vl_api_registration_t *reg;
+  u32 context;
+} dhcp_client_send_walk_ctx_t;
+
+static int
+send_dhcp_client_entry (const dhcp_client_t * client, void *arg)
+{
+  dhcp_client_send_walk_ctx_t *ctx;
+  vl_api_dhcp_client_details_t *mp;
+
+  ctx = arg;
+
+  mp = vl_msg_api_alloc (sizeof (*mp));
+  clib_memset (mp, 0, sizeof (*mp));
+
+  mp->_vl_msg_id = ntohs (VL_API_DHCP_CLIENT_DETAILS + REPLY_MSG_ID_BASE);
+  mp->context = ctx->context;
+
+  dhcp_client_data_encode (&mp->client, client);
+  dhcp_client_lease_encode (&mp->lease, client);
+
+  vl_api_send_msg (ctx->reg, (u8 *) mp);
+
+  return (1);
+}
+
+static void
+vl_api_dhcp_client_dump_t_handler (vl_api_dhcp_client_dump_t * mp)
+{
+  vl_api_registration_t *reg;
+
+  reg = vl_api_client_index_to_registration (mp->client_index);
+  if (!reg)
+    return;
+
+  dhcp_client_send_walk_ctx_t ctx = {
+    .reg = reg,
+    .context = mp->context,
+  };
+  dhcp_client_walk (send_dhcp_client_entry, &ctx);
+}
+
+static void
+  vl_api_dhcp6_clients_enable_disable_t_handler
+  (vl_api_dhcp6_clients_enable_disable_t * mp)
+{
+  vl_api_dhcp6_clients_enable_disable_reply_t *rmp;
+  int rv = 0;
+
+  dhcp6_clients_enable_disable (mp->enable);
+
+  REPLY_MACRO (VL_API_DHCP6_CLIENTS_ENABLE_DISABLE_REPLY);
+}
+
+void
+  vl_api_want_dhcp6_reply_events_t_handler
+  (vl_api_want_dhcp6_reply_events_t * mp)
+{
+  vpe_api_main_t *am = &vpe_api_main;
+  vl_api_want_dhcp6_reply_events_reply_t *rmp;
+  int rv = 0;
+
+  uword *p =
+    hash_get (am->dhcp6_reply_events_registration_hash, mp->client_index);
+  vpe_client_registration_t *rp;
+  if (p)
+    {
+      if (mp->enable_disable)
+	{
+	  clib_warning ("pid %d: already enabled...", ntohl (mp->pid));
+	  rv = VNET_API_ERROR_INVALID_REGISTRATION;
+	  goto reply;
+	}
+      else
+	{
+	  rp = pool_elt_at_index (am->dhcp6_reply_events_registrations, p[0]);
+	  pool_put (am->dhcp6_reply_events_registrations, rp);
+	  hash_unset (am->dhcp6_reply_events_registration_hash,
+		      mp->client_index);
+	  if (pool_elts (am->dhcp6_reply_events_registrations) == 0)
+	    dhcp6_set_publisher_node (~0, DHCP6_DP_REPORT_MAX);
+	  goto reply;
+	}
+    }
+  if (mp->enable_disable == 0)
+    {
+      clib_warning ("pid %d: already disabled...", ntohl (mp->pid));
+      rv = VNET_API_ERROR_INVALID_REGISTRATION;
+      goto reply;
+    }
+  pool_get (am->dhcp6_reply_events_registrations, rp);
+  rp->client_index = mp->client_index;
+  rp->client_pid = ntohl (mp->pid);
+  hash_set (am->dhcp6_reply_events_registration_hash, rp->client_index,
+	    rp - am->dhcp6_reply_events_registrations);
+  dhcp6_set_publisher_node (dhcp6_reply_process_node.index,
+			    DHCP6_DP_REPLY_REPORT);
+
+reply:
+  REPLY_MACRO (VL_API_WANT_DHCP6_REPLY_EVENTS_REPLY);
+}
+
+void
+  vl_api_want_dhcp6_pd_reply_events_t_handler
+  (vl_api_want_dhcp6_pd_reply_events_t * mp)
+{
+  vpe_api_main_t *am = &vpe_api_main;
+  vl_api_want_dhcp6_pd_reply_events_reply_t *rmp;
+  int rv = 0;
+
+  uword *p =
+    hash_get (am->dhcp6_pd_reply_events_registration_hash, mp->client_index);
+  vpe_client_registration_t *rp;
+  if (p)
+    {
+      if (mp->enable_disable)
+	{
+	  clib_warning ("pid %d: already enabled...", ntohl (mp->pid));
+	  rv = VNET_API_ERROR_INVALID_REGISTRATION;
+	  goto reply;
+	}
+      else
+	{
+	  rp =
+	    pool_elt_at_index (am->dhcp6_pd_reply_events_registrations, p[0]);
+	  pool_put (am->dhcp6_pd_reply_events_registrations, rp);
+	  hash_unset (am->dhcp6_pd_reply_events_registration_hash,
+		      mp->client_index);
+	  if (pool_elts (am->dhcp6_pd_reply_events_registrations) == 0)
+	    dhcp6_pd_set_publisher_node (~0, DHCP6_PD_DP_REPORT_MAX);
+	  goto reply;
+	}
+    }
+  if (mp->enable_disable == 0)
+    {
+      clib_warning ("pid %d: already disabled...", ntohl (mp->pid));
+      rv = VNET_API_ERROR_INVALID_REGISTRATION;
+      goto reply;
+    }
+  pool_get (am->dhcp6_pd_reply_events_registrations, rp);
+  rp->client_index = mp->client_index;
+  rp->client_pid = ntohl (mp->pid);
+  hash_set (am->dhcp6_pd_reply_events_registration_hash, rp->client_index,
+	    rp - am->dhcp6_pd_reply_events_registrations);
+  dhcp6_pd_set_publisher_node (dhcp6_pd_reply_process_node.index,
+			       DHCP6_PD_DP_REPLY_REPORT);
+
+reply:
+  REPLY_MACRO (VL_API_WANT_DHCP6_PD_REPLY_EVENTS_REPLY);
+}
+
+void
+  vl_api_dhcp6_send_client_message_t_handler
+  (vl_api_dhcp6_send_client_message_t * mp)
+{
+  vl_api_dhcp6_send_client_message_reply_t *rmp;
+  dhcp6_send_client_message_params_t params;
+  vlib_main_t *vm = vlib_get_main ();
+  u32 n_addresses;
+  u32 i;
+  int rv = 0;
+
+  VALIDATE_SW_IF_INDEX (mp);
+
+  BAD_SW_IF_INDEX_LABEL;
+  REPLY_MACRO (VL_API_DHCP6_SEND_CLIENT_MESSAGE_REPLY);
+
+  if (rv != 0)
+    return;
+
+  params.sw_if_index = ntohl (mp->sw_if_index);
+  params.server_index = ntohl (mp->server_index);
+  params.irt = ntohl (mp->irt);
+  params.mrt = ntohl (mp->mrt);
+  params.mrc = ntohl (mp->mrc);
+  params.mrd = ntohl (mp->mrd);
+  params.msg_type = ntohl (mp->msg_type);
+  params.T1 = ntohl (mp->T1);
+  params.T2 = ntohl (mp->T2);
+  n_addresses = ntohl (mp->n_addresses);
+  params.addresses = 0;
+  if (n_addresses > 0)
+    vec_validate (params.addresses, n_addresses - 1);
+  for (i = 0; i < n_addresses; i++)
+    {
+      vl_api_dhcp6_address_info_t *ai = &mp->addresses[i];
+      dhcp6_send_client_message_params_address_t *addr = &params.addresses[i];
+      addr->preferred_lt = ntohl (ai->preferred_time);
+      addr->valid_lt = ntohl (ai->valid_time);
+      ip6_address_decode (ai->address, &addr->address);
+    }
+
+  dhcp6_send_client_message (vm, ntohl (mp->sw_if_index), mp->stop, &params);
+}
+
+void
+  vl_api_dhcp6_pd_send_client_message_t_handler
+  (vl_api_dhcp6_pd_send_client_message_t * mp)
+{
+  vl_api_dhcp6_pd_send_client_message_reply_t *rmp;
+  dhcp6_pd_send_client_message_params_t params;
+  vlib_main_t *vm = vlib_get_main ();
+  u32 n_prefixes;
+  u32 i;
+  int rv = 0;
+
+  VALIDATE_SW_IF_INDEX (mp);
+
+  BAD_SW_IF_INDEX_LABEL;
+  REPLY_MACRO (VL_API_DHCP6_PD_SEND_CLIENT_MESSAGE_REPLY);
+
+  if (rv != 0)
+    return;
+
+  params.sw_if_index = ntohl (mp->sw_if_index);
+  params.server_index = ntohl (mp->server_index);
+  params.irt = ntohl (mp->irt);
+  params.mrt = ntohl (mp->mrt);
+  params.mrc = ntohl (mp->mrc);
+  params.mrd = ntohl (mp->mrd);
+  params.msg_type = ntohl (mp->msg_type);
+  params.T1 = ntohl (mp->T1);
+  params.T2 = ntohl (mp->T2);
+  n_prefixes = ntohl (mp->n_prefixes);
+  params.prefixes = 0;
+  if (n_prefixes > 0)
+    vec_validate (params.prefixes, n_prefixes - 1);
+  for (i = 0; i < n_prefixes; i++)
+    {
+      vl_api_dhcp6_pd_prefix_info_t *pi = &mp->prefixes[i];
+      dhcp6_pd_send_client_message_params_prefix_t *pref =
+	&params.prefixes[i];
+      pref->preferred_lt = ntohl (pi->preferred_time);
+      pref->valid_lt = ntohl (pi->valid_time);
+      ip6_address_decode (pi->prefix.address, &pref->prefix);
+      pref->prefix_length = pi->prefix.len;
+    }
+
+  dhcp6_pd_send_client_message (vm, ntohl (mp->sw_if_index), mp->stop,
+				&params);
+}
+
+static clib_error_t *
+call_dhcp6_reply_event_callbacks (void *data,
+				  _vnet_dhcp6_reply_event_function_list_elt_t
+				  * elt)
+{
+  clib_error_t *error = 0;
+
+  while (elt)
+    {
+      error = elt->fp (data);
+      if (error)
+	return error;
+      elt = elt->next_dhcp6_reply_event_function;
+    }
+
+  return error;
+}
+
+static uword
+dhcp6_reply_process (vlib_main_t * vm, vlib_node_runtime_t * rt,
+		     vlib_frame_t * f)
+{
+  /* These cross the longjmp  boundary (vlib_process_wait_for_event)
+   * and need to be volatile - to prevent them from being optimized into
+   * a register - which could change during suspension */
+
+  while (1)
+    {
+      vlib_process_wait_for_event (vm);
+      uword event_type = DHCP6_DP_REPLY_REPORT;
+      void *event_data = vlib_process_get_event_data (vm, &event_type);
+
+      int i;
+      if (event_type == DHCP6_DP_REPLY_REPORT)
+	{
+	  address_report_t *events = event_data;
+	  for (i = 0; i < vec_len (events); i++)
+	    {
+	      u32 event_size =
+		sizeof (vl_api_dhcp6_reply_event_t) +
+		vec_len (events[i].addresses) *
+		sizeof (vl_api_dhcp6_address_info_t);
+	      vl_api_dhcp6_reply_event_t *event = clib_mem_alloc (event_size);
+	      clib_memset (event, 0, event_size);
+
+	      event->sw_if_index = htonl (events[i].body.sw_if_index);
+	      event->server_index = htonl (events[i].body.server_index);
+	      event->msg_type = events[i].body.msg_type;
+	      event->T1 = htonl (events[i].body.T1);
+	      event->T2 = htonl (events[i].body.T2);
+	      event->inner_status_code =
+		htons (events[i].body.inner_status_code);
+	      event->status_code = htons (events[i].body.status_code);
+	      event->preference = events[i].body.preference;
+
+	      event->n_addresses = htonl (vec_len (events[i].addresses));
+	      vl_api_dhcp6_address_info_t *address =
+		(typeof (address)) event->addresses;
+	      u32 j;
+	      for (j = 0; j < vec_len (events[i].addresses); j++)
+		{
+		  dhcp6_address_info_t *info = &events[i].addresses[j];
+		  ip6_address_encode (&info->address, address->address);
+		  address->valid_time = htonl (info->valid_time);
+		  address->preferred_time = htonl (info->preferred_time);
+		  address++;
+		}
+	      vec_free (events[i].addresses);
+
+	      dhcp6_ia_na_client_public_main_t *dcpm =
+		&dhcp6_ia_na_client_public_main;
+	      call_dhcp6_reply_event_callbacks (event, dcpm->functions);
+
+	      vpe_client_registration_t *reg;
+              /* *INDENT-OFF* */
+              pool_foreach(reg, vpe_api_main.dhcp6_reply_events_registrations,
+              ({
+                vl_api_registration_t *vl_reg;
+                vl_reg =
+                  vl_api_client_index_to_registration (reg->client_index);
+                if (vl_reg && vl_api_can_send_msg (vl_reg))
+                  {
+                    vl_api_dhcp6_reply_event_t *msg =
+                      vl_msg_api_alloc (event_size);
+                    clib_memcpy (msg, event, event_size);
+                    msg->_vl_msg_id = htons (VL_API_DHCP6_REPLY_EVENT + REPLY_MSG_ID_BASE);
+                    msg->client_index = reg->client_index;
+                    msg->pid = reg->client_pid;
+                    vl_api_send_msg (vl_reg, (u8 *) msg);
+                  }
+              }));
+              /* *INDENT-ON* */
+
+	      clib_mem_free (event);
+	    }
+	}
+      vlib_process_put_event_data (vm, event_data);
+    }
+
+  return 0;
+}
+
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (dhcp6_reply_process_node) = {
+  .function = dhcp6_reply_process,
+  .type = VLIB_NODE_TYPE_PROCESS,
+  .name = "dhcp6-reply-publisher-process",
+};
+/* *INDENT-ON* */
+
+static clib_error_t *
+call_dhcp6_pd_reply_event_callbacks (void *data,
+				     _vnet_dhcp6_pd_reply_event_function_list_elt_t
+				     * elt)
+{
+  clib_error_t *error = 0;
+
+  while (elt)
+    {
+      error = elt->fp (data);
+      if (error)
+	return error;
+      elt = elt->next_dhcp6_pd_reply_event_function;
+    }
+
+  return error;
+}
+
+static uword
+dhcp6_pd_reply_process (vlib_main_t * vm, vlib_node_runtime_t * rt,
+			vlib_frame_t * f)
+{
+  /* These cross the longjmp  boundary (vlib_process_wait_for_event)
+   * and need to be volatile - to prevent them from being optimized into
+   * a register - which could change during suspension */
+
+  while (1)
+    {
+      vlib_process_wait_for_event (vm);
+      uword event_type = DHCP6_PD_DP_REPLY_REPORT;
+      void *event_data = vlib_process_get_event_data (vm, &event_type);
+
+      int i;
+      if (event_type == DHCP6_PD_DP_REPLY_REPORT)
+	{
+	  prefix_report_t *events = event_data;
+	  for (i = 0; i < vec_len (events); i++)
+	    {
+	      u32 event_size =
+		sizeof (vl_api_dhcp6_pd_reply_event_t) +
+		vec_len (events[i].prefixes) *
+		sizeof (vl_api_dhcp6_pd_prefix_info_t);
+	      vl_api_dhcp6_pd_reply_event_t *event =
+		clib_mem_alloc (event_size);
+	      clib_memset (event, 0, event_size);
+
+	      event->sw_if_index = htonl (events[i].body.sw_if_index);
+	      event->server_index = htonl (events[i].body.server_index);
+	      event->msg_type = events[i].body.msg_type;
+	      event->T1 = htonl (events[i].body.T1);
+	      event->T2 = htonl (events[i].body.T2);
+	      event->inner_status_code =
+		htons (events[i].body.inner_status_code);
+	      event->status_code = htons (events[i].body.status_code);
+	      event->preference = events[i].body.preference;
+
+	      event->n_prefixes = htonl (vec_len (events[i].prefixes));
+	      vl_api_dhcp6_pd_prefix_info_t *prefix =
+		(typeof (prefix)) event->prefixes;
+	      u32 j;
+	      for (j = 0; j < vec_len (events[i].prefixes); j++)
+		{
+		  dhcp6_prefix_info_t *info = &events[i].prefixes[j];
+		  ip6_address_encode (&info->prefix, prefix->prefix.address);
+		  prefix->prefix.len = info->prefix_length;
+		  prefix->valid_time = htonl (info->valid_time);
+		  prefix->preferred_time = htonl (info->preferred_time);
+		  prefix++;
+		}
+	      vec_free (events[i].prefixes);
+
+	      dhcp6_pd_client_public_main_t *dpcpm =
+		&dhcp6_pd_client_public_main;
+	      call_dhcp6_pd_reply_event_callbacks (event, dpcpm->functions);
+
+	      vpe_client_registration_t *reg;
+              /* *INDENT-OFF* */
+              pool_foreach(reg, vpe_api_main.dhcp6_pd_reply_events_registrations,
+              ({
+                vl_api_registration_t *vl_reg;
+                vl_reg =
+                  vl_api_client_index_to_registration (reg->client_index);
+                if (vl_reg && vl_api_can_send_msg (vl_reg))
+                  {
+                    vl_api_dhcp6_pd_reply_event_t *msg =
+                      vl_msg_api_alloc (event_size);
+                    clib_memcpy (msg, event, event_size);
+                    msg->_vl_msg_id = htons (VL_API_DHCP6_PD_REPLY_EVENT + REPLY_MSG_ID_BASE);
+                    msg->client_index = reg->client_index;
+                    msg->pid = reg->client_pid;
+                    vl_api_send_msg (vl_reg, (u8 *) msg);
+                  }
+              }));
+              /* *INDENT-ON* */
+
+	      clib_mem_free (event);
+	    }
+	}
+      vlib_process_put_event_data (vm, event_data);
+    }
+
+  return 0;
+}
+
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (dhcp6_pd_reply_process_node) = {
+  .function = dhcp6_pd_reply_process,
+  .type = VLIB_NODE_TYPE_PROCESS,
+  .name = "dhcp6-pd-reply-publisher-process",
+};
+/* *INDENT-ON* */
+
+/*
+ * dhcp_api_hookup
+ * Add vpe's API message handlers to the table.
+ * vlib has already mapped shared memory and
+ * added the client registration handlers.
+ * See .../vlib-api/vlibmemory/memclnt_vlib.c:memclnt_process()
+ */
+#include <dhcp/dhcp.api.c>
+
+static clib_error_t *
+dhcp_api_hookup (vlib_main_t * vm)
+{
+  /*
+   * Set up the (msg_name, crc, message-id) table
+   */
+  dhcp_base_msg_id = setup_message_id_table ();
+
+  dhcp6_pd_set_publisher_node (dhcp6_pd_reply_process_node.index,
+			       DHCP6_PD_DP_REPLY_REPORT);
+  dhcp6_set_publisher_node (dhcp6_reply_process_node.index,
+			    DHCP6_DP_REPLY_REPORT);
+
+  return 0;
+}
+
+VLIB_API_INIT_FUNCTION (dhcp_api_hookup);
+
+#include <vlib/unix/plugin.h>
+#include <vpp/app/version.h>
+
+/* *INDENT-OFF* */
+VLIB_PLUGIN_REGISTER () = {
+    .version = VPP_BUILD_VER,
+    .description = "Dynamic Host Configuration Protocol (DHCP)",
+};
+/* *INDENT-ON* */
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */