vxlan: convert vxlan to a plugin

per https://jira.fd.io/browse/VPP-2058

Type: improvement

Signed-off-by: Steven Luong <sluong@cisco.com>
Change-Id: Ica0828de218d25ada2d0d1491e373c3b78179ac1

1 files changed, 376 insertions, 0 deletions

diff --git a/src/plugins/vxlan/vxlan_api.c b/src/plugins/vxlan/vxlan_api.c
new file mode 100644
index 00000000000..8fd0928cc63
--- /dev/null
+++ b/src/plugins/vxlan/vxlan_api.c
@@ -0,0 +1,376 @@
+/*
+ *------------------------------------------------------------------
+ * vxlan_api.c - vxlan 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 <vnet/feature/feature.h>
+#include <vxlan/vxlan.h>
+#include <vnet/fib/fib_table.h>
+#include <vnet/ip/ip_types_api.h>
+#include <vnet/udp/udp_local.h>
+#include <vnet/format_fns.h>
+#include <vxlan/vxlan.api_enum.h>
+#include <vxlan/vxlan.api_types.h>
+
+static u16 msg_id_base;
+
+#define REPLY_MSG_ID_BASE msg_id_base
+#include <vlibapi/api_helper_macros.h>
+
+static void
+vl_api_vxlan_offload_rx_t_handler (vl_api_vxlan_offload_rx_t * mp)
+{
+  vl_api_vxlan_offload_rx_reply_t *rmp;
+  int rv = 0;
+  u32 hw_if_index = ntohl (mp->hw_if_index);
+  u32 sw_if_index = ntohl (mp->sw_if_index);
+
+  if (!vnet_hw_interface_is_valid (vnet_get_main (), hw_if_index))
+    {
+      rv = VNET_API_ERROR_NO_SUCH_ENTRY;
+      goto err;
+    }
+  VALIDATE_SW_IF_INDEX (mp);
+
+  u32 t_index = vnet_vxlan_get_tunnel_index (sw_if_index);
+  if (t_index == ~0)
+    {
+      rv = VNET_API_ERROR_INVALID_SW_IF_INDEX_2;
+      goto err;
+    }
+
+  vxlan_main_t *vxm = &vxlan_main;
+  vxlan_tunnel_t *t = pool_elt_at_index (vxm->tunnels, t_index);
+  if (!ip46_address_is_ip4 (&t->dst))
+    {
+      rv = VNET_API_ERROR_INVALID_ADDRESS_FAMILY;
+      goto err;
+    }
+
+  vnet_main_t *vnm = vnet_get_main ();
+  vnet_hw_interface_t *hw_if = vnet_get_hw_interface (vnm, hw_if_index);
+  ip4_main_t *im = &ip4_main;
+  u32 rx_fib_index =
+    vec_elt (im->fib_index_by_sw_if_index, hw_if->sw_if_index);
+
+  if (t->encap_fib_index != rx_fib_index)
+    {
+      rv = VNET_API_ERROR_NO_SUCH_FIB;
+      goto err;
+    }
+
+  if (vnet_vxlan_add_del_rx_flow (hw_if_index, t_index, mp->enable))
+    {
+      rv = VNET_API_ERROR_UNSPECIFIED;
+      goto err;
+    }
+  BAD_SW_IF_INDEX_LABEL;
+err:
+
+  REPLY_MACRO (VL_API_VXLAN_OFFLOAD_RX_REPLY);
+}
+
+static void
+  vl_api_sw_interface_set_vxlan_bypass_t_handler
+  (vl_api_sw_interface_set_vxlan_bypass_t * mp)
+{
+  vl_api_sw_interface_set_vxlan_bypass_reply_t *rmp;
+  int rv = 0;
+  u32 sw_if_index = ntohl (mp->sw_if_index);
+
+  VALIDATE_SW_IF_INDEX (mp);
+
+  vnet_int_vxlan_bypass_mode (sw_if_index, mp->is_ipv6, mp->enable);
+  BAD_SW_IF_INDEX_LABEL;
+
+  REPLY_MACRO (VL_API_SW_INTERFACE_SET_VXLAN_BYPASS_REPLY);
+}
+
+static int
+vxlan_add_del_tunnel_clean_input (vnet_vxlan_add_del_tunnel_args_t *a,
+				  u32 encap_vrf_id)
+{
+  a->is_ip6 = !ip46_address_is_ip4 (&a->src);
+
+  a->encap_fib_index = fib_table_find (fib_ip_proto (a->is_ip6), encap_vrf_id);
+  if (a->encap_fib_index == ~0)
+    {
+      return VNET_API_ERROR_NO_SUCH_FIB;
+    }
+
+  if (ip46_address_is_ip4 (&a->src) != ip46_address_is_ip4 (&a->dst))
+    {
+      return VNET_API_ERROR_INVALID_VALUE;
+    }
+
+  /* Check src & dst are different */
+  if (ip46_address_cmp (&a->dst, &a->src) == 0)
+    {
+      return VNET_API_ERROR_SAME_SRC_DST;
+    }
+  if (ip46_address_is_multicast (&a->dst) &&
+      !vnet_sw_if_index_is_api_valid (a->mcast_sw_if_index))
+    {
+      return VNET_API_ERROR_INVALID_SW_IF_INDEX;
+    }
+  return 0;
+}
+
+static void
+vl_api_vxlan_add_del_tunnel_t_handler (vl_api_vxlan_add_del_tunnel_t *mp)
+{
+  vl_api_vxlan_add_del_tunnel_reply_t *rmp;
+  u32 sw_if_index = ~0;
+  int rv = 0;
+
+  vnet_vxlan_add_del_tunnel_args_t a = {
+    .is_add = mp->is_add,
+    .instance = ntohl (mp->instance),
+    .mcast_sw_if_index = ntohl (mp->mcast_sw_if_index),
+    .decap_next_index = ntohl (mp->decap_next_index),
+    .vni = ntohl (mp->vni),
+  };
+  ip_address_decode (&mp->src_address, &a.src);
+  ip_address_decode (&mp->dst_address, &a.dst);
+
+  rv = vxlan_add_del_tunnel_clean_input (&a, ntohl (mp->encap_vrf_id));
+  if (rv)
+    goto out;
+  a.dst_port = a.is_ip6 ? UDP_DST_PORT_vxlan6 : UDP_DST_PORT_vxlan,
+  a.src_port = a.is_ip6 ? UDP_DST_PORT_vxlan6 : UDP_DST_PORT_vxlan,
+  rv = vnet_vxlan_add_del_tunnel (&a, &sw_if_index);
+
+out:
+  REPLY_MACRO2(VL_API_VXLAN_ADD_DEL_TUNNEL_REPLY,
+  ({
+    rmp->sw_if_index = ntohl (sw_if_index);
+  }));
+}
+
+static void
+vl_api_vxlan_add_del_tunnel_v2_t_handler (vl_api_vxlan_add_del_tunnel_v2_t *mp)
+{
+  vl_api_vxlan_add_del_tunnel_v2_reply_t *rmp;
+  u32 sw_if_index = ~0;
+  int rv = 0;
+
+  vnet_vxlan_add_del_tunnel_args_t a = {
+    .is_add = mp->is_add,
+    .instance = ntohl (mp->instance),
+    .mcast_sw_if_index = ntohl (mp->mcast_sw_if_index),
+    .decap_next_index = ntohl (mp->decap_next_index),
+    .vni = ntohl (mp->vni),
+    .dst_port = ntohs (mp->dst_port),
+    .src_port = ntohs (mp->src_port),
+  };
+
+  ip_address_decode (&mp->src_address, &a.src);
+  ip_address_decode (&mp->dst_address, &a.dst);
+
+  rv = vxlan_add_del_tunnel_clean_input (&a, ntohl (mp->encap_vrf_id));
+  if (rv)
+    goto out;
+  rv = vnet_vxlan_add_del_tunnel (&a, &sw_if_index);
+out:
+  REPLY_MACRO2 (VL_API_VXLAN_ADD_DEL_TUNNEL_V2_REPLY,
+		({ rmp->sw_if_index = ntohl (sw_if_index); }));
+}
+
+static void
+vl_api_vxlan_add_del_tunnel_v3_t_handler (vl_api_vxlan_add_del_tunnel_v3_t *mp)
+{
+  vl_api_vxlan_add_del_tunnel_v3_reply_t *rmp;
+  u32 sw_if_index = ~0;
+  int rv = 0;
+
+  vnet_vxlan_add_del_tunnel_args_t a = {
+    .is_add = mp->is_add,
+    .instance = ntohl (mp->instance),
+    .mcast_sw_if_index = ntohl (mp->mcast_sw_if_index),
+    .decap_next_index = ntohl (mp->decap_next_index),
+    .vni = ntohl (mp->vni),
+    .dst_port = ntohs (mp->dst_port),
+    .src_port = ntohs (mp->src_port),
+    .is_l3 = mp->is_l3,
+  };
+
+  ip_address_decode (&mp->src_address, &a.src);
+  ip_address_decode (&mp->dst_address, &a.dst);
+
+  rv = vxlan_add_del_tunnel_clean_input (&a, ntohl (mp->encap_vrf_id));
+  if (rv)
+    goto out;
+  rv = vnet_vxlan_add_del_tunnel (&a, &sw_if_index);
+out:
+  REPLY_MACRO2 (VL_API_VXLAN_ADD_DEL_TUNNEL_V3_REPLY,
+		({ rmp->sw_if_index = ntohl (sw_if_index); }));
+}
+
+static void send_vxlan_tunnel_details
+  (vxlan_tunnel_t * t, vl_api_registration_t * reg, u32 context)
+{
+  vl_api_vxlan_tunnel_details_t *rmp;
+  ip4_main_t *im4 = &ip4_main;
+  ip6_main_t *im6 = &ip6_main;
+
+  rmp = vl_msg_api_alloc (sizeof (*rmp));
+  clib_memset (rmp, 0, sizeof (*rmp));
+  rmp->_vl_msg_id = ntohs (REPLY_MSG_ID_BASE + VL_API_VXLAN_TUNNEL_DETAILS);
+
+  ip_address_encode (&t->src, IP46_TYPE_ANY, &rmp->src_address);
+  ip_address_encode (&t->dst, IP46_TYPE_ANY, &rmp->dst_address);
+
+  if (ip46_address_is_ip4 (&t->dst))
+    rmp->encap_vrf_id = htonl (im4->fibs[t->encap_fib_index].ft_table_id);
+  else
+    rmp->encap_vrf_id = htonl (im6->fibs[t->encap_fib_index].ft_table_id);
+
+  rmp->instance = htonl (t->user_instance);
+  rmp->mcast_sw_if_index = htonl (t->mcast_sw_if_index);
+  rmp->vni = htonl (t->vni);
+  rmp->decap_next_index = htonl (t->decap_next_index);
+  rmp->sw_if_index = htonl (t->sw_if_index);
+  rmp->context = context;
+
+  vl_api_send_msg (reg, (u8 *) rmp);
+}
+
+static void vl_api_vxlan_tunnel_dump_t_handler
+  (vl_api_vxlan_tunnel_dump_t * mp)
+{
+  vl_api_registration_t *reg;
+  vxlan_main_t *vxm = &vxlan_main;
+  vxlan_tunnel_t *t;
+  u32 sw_if_index;
+
+  reg = vl_api_client_index_to_registration (mp->client_index);
+  if (!reg)
+    return;
+
+  sw_if_index = ntohl (mp->sw_if_index);
+
+  if (~0 == sw_if_index)
+    {
+      pool_foreach (t, vxm->tunnels)
+        send_vxlan_tunnel_details(t, reg, mp->context);
+    }
+  else
+    {
+      if ((sw_if_index >= vec_len (vxm->tunnel_index_by_sw_if_index)) ||
+	  (~0 == vxm->tunnel_index_by_sw_if_index[sw_if_index]))
+	{
+	  return;
+	}
+      t = &vxm->tunnels[vxm->tunnel_index_by_sw_if_index[sw_if_index]];
+      send_vxlan_tunnel_details (t, reg, mp->context);
+    }
+}
+
+static void
+send_vxlan_tunnel_v2_details (vxlan_tunnel_t *t, vl_api_registration_t *reg,
+			      u32 context)
+{
+  vl_api_vxlan_tunnel_v2_details_t *rmp;
+  ip4_main_t *im4 = &ip4_main;
+  ip6_main_t *im6 = &ip6_main;
+
+  rmp = vl_msg_api_alloc (sizeof (*rmp));
+  clib_memset (rmp, 0, sizeof (*rmp));
+  rmp->_vl_msg_id = ntohs (REPLY_MSG_ID_BASE + VL_API_VXLAN_TUNNEL_V2_DETAILS);
+
+  ip_address_encode (&t->src, IP46_TYPE_ANY, &rmp->src_address);
+  ip_address_encode (&t->dst, IP46_TYPE_ANY, &rmp->dst_address);
+  rmp->src_port = htons (t->src_port);
+  rmp->dst_port = htons (t->dst_port);
+
+  if (ip46_address_is_ip4 (&t->dst))
+    rmp->encap_vrf_id = htonl (im4->fibs[t->encap_fib_index].ft_table_id);
+  else
+    rmp->encap_vrf_id = htonl (im6->fibs[t->encap_fib_index].ft_table_id);
+
+  rmp->instance = htonl (t->user_instance);
+  rmp->mcast_sw_if_index = htonl (t->mcast_sw_if_index);
+  rmp->vni = htonl (t->vni);
+  rmp->decap_next_index = htonl (t->decap_next_index);
+  rmp->sw_if_index = htonl (t->sw_if_index);
+  rmp->context = context;
+
+  vl_api_send_msg (reg, (u8 *) rmp);
+}
+
+static void
+vl_api_vxlan_tunnel_v2_dump_t_handler (vl_api_vxlan_tunnel_v2_dump_t *mp)
+{
+  vl_api_registration_t *reg;
+  vxlan_main_t *vxm = &vxlan_main;
+  vxlan_tunnel_t *t;
+  u32 sw_if_index;
+
+  reg = vl_api_client_index_to_registration (mp->client_index);
+  if (!reg)
+    return;
+
+  sw_if_index = ntohl (mp->sw_if_index);
+
+  if (~0 == sw_if_index)
+    {
+      pool_foreach (t, vxm->tunnels)
+	send_vxlan_tunnel_v2_details (t, reg, mp->context);
+    }
+  else
+    {
+      if ((sw_if_index >= vec_len (vxm->tunnel_index_by_sw_if_index)) ||
+	  (~0 == vxm->tunnel_index_by_sw_if_index[sw_if_index]))
+	{
+	  return;
+	}
+      t = &vxm->tunnels[vxm->tunnel_index_by_sw_if_index[sw_if_index]];
+      send_vxlan_tunnel_v2_details (t, reg, mp->context);
+    }
+}
+
+#include <vxlan/vxlan.api.c>
+static clib_error_t *
+vxlan_api_hookup (vlib_main_t * vm)
+{
+  api_main_t *am = vlibapi_get_main ();
+
+  vl_api_increase_msg_trace_size (am, VL_API_VXLAN_ADD_DEL_TUNNEL,
+				  16 * sizeof (u32));
+
+  /*
+   * Set up the (msg_name, crc, message-id) table
+   */
+  msg_id_base = setup_message_id_table ();
+
+  return 0;
+}
+
+VLIB_API_INIT_FUNCTION (vxlan_api_hookup);
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */