Proxy ND (RFC4389 - or a sub-set thereof). This allows the 'emulation' of bridging. That is hosts in one sub-net reachable via differenet interfaces.

Introducate a new API command:
  ip6 nd proxy <host-address> <interface>

this indicates 2 things;
 1) that host <host-address> is reachable out of interface <interface>. VPP will thus install that route.
 2) NS requests sent to <host-address> will be responeded to (i.e. proxied).

Change-Id: I863f967fdb5097ab3b574769c70afdbfc8d5478a
Signed-off-by: Neale Ranns <nranns@cisco.com>

1 files changed, 109 insertions, 0 deletions

diff --git a/src/vat/api_format.c b/src/vat/api_format.c
index fb596fe69d0..08a2a774fce 100644
--- a/src/vat/api_format.c
+++ b/src/vat/api_format.c
@@ -3913,6 +3913,7 @@ _(dhcp_client_config_reply)                             \
 _(set_ip_flow_hash_reply)                               \
 _(sw_interface_ip6_enable_disable_reply)                \
 _(sw_interface_ip6_set_link_local_address_reply)        \
+_(ip6nd_proxy_add_del_reply)                            \
 _(sw_interface_ip6nd_ra_prefix_reply)                   \
 _(sw_interface_ip6nd_ra_config_reply)                   \
 _(set_arp_neighbor_limit_reply)                         \
@@ -4092,6 +4093,8 @@ _(SW_INTERFACE_IP6_ENABLE_DISABLE_REPLY,                                \
   sw_interface_ip6_enable_disable_reply)                                \
 _(SW_INTERFACE_IP6_SET_LINK_LOCAL_ADDRESS_REPLY,                        \
   sw_interface_ip6_set_link_local_address_reply)                        \
+_(IP6ND_PROXY_ADD_DEL_REPLY, ip6nd_proxy_add_del_reply)                 \
+_(IP6ND_PROXY_DETAILS, ip6nd_proxy_details)                             \
 _(SW_INTERFACE_IP6ND_RA_PREFIX_REPLY,                                   \
   sw_interface_ip6nd_ra_prefix_reply)                                   \
 _(SW_INTERFACE_IP6ND_RA_CONFIG_REPLY,                                   \
@@ -7968,6 +7971,109 @@ api_sw_interface_ip6_set_link_local_address (vat_main_t * vam)
   return ret;
 }
 
+static int
+api_ip6nd_proxy_add_del (vat_main_t * vam)
+{
+  unformat_input_t *i = vam->input;
+  vl_api_ip6nd_proxy_add_del_t *mp;
+  u32 sw_if_index = ~0;
+  u8 v6_address_set = 0;
+  ip6_address_t v6address;
+  u8 is_del = 0;
+  int ret;
+
+  /* Parse args required to build the message */
+  while (unformat_check_input (i) != UNFORMAT_END_OF_INPUT)
+    {
+      if (unformat (i, "%U", api_unformat_sw_if_index, vam, &sw_if_index))
+	;
+      else if (unformat (i, "sw_if_index %d", &sw_if_index))
+	;
+      else if (unformat (i, "%U", unformat_ip6_address, &v6address))
+	v6_address_set = 1;
+      if (unformat (i, "del"))
+	is_del = 1;
+      else
+	{
+	  clib_warning ("parse error '%U'", format_unformat_error, i);
+	  return -99;
+	}
+    }
+
+  if (sw_if_index == ~0)
+    {
+      errmsg ("missing interface name or sw_if_index");
+      return -99;
+    }
+  if (!v6_address_set)
+    {
+      errmsg ("no address set");
+      return -99;
+    }
+
+  /* Construct the API message */
+  M (IP6ND_PROXY_ADD_DEL, mp);
+
+  mp->is_del = is_del;
+  mp->sw_if_index = ntohl (sw_if_index);
+  clib_memcpy (mp->address, &v6address, sizeof (v6address));
+
+  /* send it... */
+  S (mp);
+
+  /* Wait for a reply, return good/bad news  */
+  W (ret);
+  return ret;
+}
+
+static int
+api_ip6nd_proxy_dump (vat_main_t * vam)
+{
+  vl_api_ip6nd_proxy_dump_t *mp;
+  vl_api_control_ping_t *mp_ping;
+  int ret;
+
+  M (IP6ND_PROXY_DUMP, mp);
+
+  S (mp);
+
+  /* Use a control ping for synchronization */
+  M (CONTROL_PING, mp_ping);
+  S (mp_ping);
+
+  W (ret);
+  return ret;
+}
+
+static void vl_api_ip6nd_proxy_details_t_handler
+  (vl_api_ip6nd_proxy_details_t * mp)
+{
+  vat_main_t *vam = &vat_main;
+
+  print (vam->ofp, "host %U sw_if_index %d",
+	 format_ip6_address, mp->address, ntohl (mp->sw_if_index));
+}
+
+static void vl_api_ip6nd_proxy_details_t_handler_json
+  (vl_api_ip6nd_proxy_details_t * mp)
+{
+  vat_main_t *vam = &vat_main;
+  struct in6_addr ip6;
+  vat_json_node_t *node = NULL;
+
+  if (VAT_JSON_ARRAY != vam->json_tree.type)
+    {
+      ASSERT (VAT_JSON_NONE == vam->json_tree.type);
+      vat_json_init_array (&vam->json_tree);
+    }
+  node = vat_json_array_add (&vam->json_tree);
+
+  vat_json_init_object (node);
+  vat_json_object_add_uint (node, "sw_if_index", ntohl (mp->sw_if_index));
+
+  clib_memcpy (&ip6, mp->address, sizeof (ip6));
+  vat_json_object_add_ip6 (node, "host", ip6);
+}
 
 static int
 api_sw_interface_ip6nd_ra_prefix (vat_main_t * vam)
@@ -17974,6 +18080,9 @@ _(sw_interface_ip6_enable_disable,                                      \
   "<intfc> | sw_if_index <id> enable | disable")                        \
 _(sw_interface_ip6_set_link_local_address,                              \
   "<intfc> | sw_if_index <id> <ip6-address>/<mask-width>")              \
+_(ip6nd_proxy_add_del,                                                  \
+  "<intfc> | sw_if_index <id> <ip6-address>")                           \
+_(ip6nd_proxy_dump, "")                                                 \
 _(sw_interface_ip6nd_ra_prefix,                                         \
   "<intfc> | sw_if_index <id> <ip6-address>/<mask-width>\n"             \
   "val_life <n> pref_life <n> [def] [noadv] [offl] [noauto]\n"          \