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, 242 insertions, 0 deletions

diff --git a/src/plugins/vxlan/vxlan.h b/src/plugins/vxlan/vxlan.h
new file mode 100644
index 00000000000..72d82e79cf5
--- /dev/null
+++ b/src/plugins/vxlan/vxlan.h
@@ -0,0 +1,242 @@
+/*
+ * Copyright (c) 2015 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.
+ */
+#ifndef included_vnet_vxlan_h
+#define included_vnet_vxlan_h
+
+#include <vppinfra/error.h>
+#include <vppinfra/hash.h>
+#include <vppinfra/bihash_16_8.h>
+#include <vppinfra/bihash_24_8.h>
+#include <vnet/vnet.h>
+#include <vnet/ip/ip.h>
+#include <vnet/ip/vtep.h>
+#include <vnet/l2/l2_input.h>
+#include <vnet/l2/l2_output.h>
+#include <vnet/l2/l2_bd.h>
+#include <vnet/ethernet/ethernet.h>
+#include <vxlan/vxlan_packet.h>
+#include <vnet/ip/ip4_packet.h>
+#include <vnet/ip/ip6_packet.h>
+#include <vnet/udp/udp_packet.h>
+#include <vnet/dpo/dpo.h>
+#include <vnet/adj/adj_types.h>
+
+/* *INDENT-OFF* */
+typedef CLIB_PACKED (struct {
+  ip4_header_t ip4;	/* 20 bytes */
+  udp_header_t udp;	/* 8 bytes */
+  vxlan_header_t vxlan;	/* 8 bytes */
+}) ip4_vxlan_header_t;
+
+typedef CLIB_PACKED (struct {
+  ip6_header_t ip6;	/* 40 bytes */
+  udp_header_t udp;	/* 8 bytes */
+  vxlan_header_t vxlan;	/* 8 bytes */
+}) ip6_vxlan_header_t;
+/* *INDENT-ON* */
+
+/*
+* Key fields: remote ip, vni on incoming VXLAN packet
+* all fields in NET byte order
+*/
+typedef clib_bihash_kv_16_8_t vxlan4_tunnel_key_t;
+
+/*
+* Key fields: remote ip, vni and fib index on incoming VXLAN packet
+* ip, vni fields in NET byte order
+* fib index field in host byte order
+*/
+typedef clib_bihash_kv_24_8_t vxlan6_tunnel_key_t;
+
+typedef union
+{
+  struct
+  {
+    u32 sw_if_index;		/* unicast - input interface / mcast - stats interface */
+    union
+    {
+      struct			/* unicast action */
+      {
+	u16 next_index;
+	u8 error;
+      };
+      ip4_address_t local_ip;	/* used as dst ip for mcast pkts to assign them to unicast tunnel */
+    };
+  };
+  u64 as_u64;
+} vxlan_decap_info_t;
+
+typedef struct
+{
+  /* Required for pool_get_aligned */
+  CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
+
+  /* FIB DPO for IP forwarding of VXLAN encap packet */
+  dpo_id_t next_dpo;
+
+  /* vxlan VNI in HOST byte order */
+  u32 vni;
+
+  /* tunnel src and dst addresses */
+  ip46_address_t src;
+  ip46_address_t dst;
+
+  /* udp-ports */
+  u16 src_port;
+  u16 dst_port;
+
+  /* mcast packet output intfc index (used only if dst is mcast) */
+  u32 mcast_sw_if_index;
+
+  /* decap next index */
+  u16 decap_next_index;
+
+  /* The FIB index for src/dst addresses */
+  u32 encap_fib_index;
+
+  /* vnet intfc index */
+  u32 sw_if_index;
+  u32 hw_if_index;
+
+  /**
+   * Linkage into the FIB object graph
+   */
+  fib_node_t node;
+
+  /*
+   * The FIB entry for (depending on VXLAN tunnel is unicast or mcast)
+   * sending unicast VXLAN encap packets or receiving mcast VXLAN packets
+   */
+  fib_node_index_t fib_entry_index;
+  adj_index_t mcast_adj_index;
+
+  /**
+   * The tunnel is a child of the FIB entry for its destination. This is
+   * so it receives updates when the forwarding information for that entry
+   * changes.
+   * The tunnels sibling index on the FIB entry's dependency list.
+   */
+  u32 sibling_index;
+
+  u32 flow_index;		/* infra flow index */
+  u32 dev_instance;		/* Real device instance in tunnel vector */
+  u32 user_instance;		/* Instance name being shown to user */
+
+  VNET_DECLARE_REWRITE;
+} vxlan_tunnel_t;
+
+#define foreach_vxlan_input_next        \
+_(DROP, "error-drop")                   \
+_(L2_INPUT, "l2-input")
+
+typedef enum
+{
+#define _(s,n) VXLAN_INPUT_NEXT_##s,
+  foreach_vxlan_input_next
+#undef _
+    VXLAN_INPUT_N_NEXT,
+} vxlan_input_next_t;
+
+typedef enum
+{
+#define vxlan_error(n,s) VXLAN_ERROR_##n,
+#include <vxlan/vxlan_error.def>
+#undef vxlan_error
+  VXLAN_N_ERROR,
+} vxlan_input_error_t;
+
+typedef struct
+{
+  /* vector of encap tunnel instances */
+  vxlan_tunnel_t *tunnels;
+
+  /* lookup tunnel by key */
+  clib_bihash_16_8_t
+    vxlan4_tunnel_by_key; /* keyed on ipv4.dst + src_port + fib + vni */
+  clib_bihash_24_8_t
+    vxlan6_tunnel_by_key; /* keyed on ipv6.dst + src_port + fib + vni */
+
+  /* local VTEP IPs ref count used by vxlan-bypass node to check if
+     received VXLAN packet DIP matches any local VTEP address */
+  vtep_table_t vtep_table;
+
+  /* mcast shared info */
+  uword *mcast_shared;		/* keyed on mcast ip46 addr */
+
+  /* Mapping from sw_if_index to tunnel index */
+  u32 *tunnel_index_by_sw_if_index;
+
+  /* graph node state */
+  uword *bm_ip4_bypass_enabled_by_sw_if;
+  uword *bm_ip6_bypass_enabled_by_sw_if;
+
+  /* convenience */
+  vlib_main_t *vlib_main;
+  vnet_main_t *vnet_main;
+
+  /* Record used instances */
+  uword *instance_used;
+  u32 flow_id_start;
+
+  /* cache for last 8 vxlan tunnel */
+  vtep4_cache_t vtep4_u512;
+
+} vxlan_main_t;
+
+extern vxlan_main_t vxlan_main;
+
+extern vlib_node_registration_t vxlan4_input_node;
+extern vlib_node_registration_t vxlan6_input_node;
+extern vlib_node_registration_t vxlan4_encap_node;
+extern vlib_node_registration_t vxlan6_encap_node;
+extern vlib_node_registration_t vxlan4_flow_input_node;
+
+u8 *format_vxlan_encap_trace (u8 * s, va_list * args);
+
+typedef struct
+{
+  u8 is_add;
+
+  /* we normally use is_ip4, but since this adds to the
+   * structure, this seems less of a breaking change */
+  u8 is_ip6;
+  u8 is_l3;
+  u32 instance;
+  ip46_address_t src, dst;
+  u32 mcast_sw_if_index;
+  u32 encap_fib_index;
+  u32 decap_next_index;
+  u32 vni;
+  u16 src_port;
+  u16 dst_port;
+} vnet_vxlan_add_del_tunnel_args_t;
+
+int vnet_vxlan_add_del_tunnel
+  (vnet_vxlan_add_del_tunnel_args_t * a, u32 * sw_if_indexp);
+
+void vnet_int_vxlan_bypass_mode (u32 sw_if_index, u8 is_ip6, u8 is_enable);
+
+int vnet_vxlan_add_del_rx_flow (u32 hw_if_index, u32 t_imdex, int is_add);
+
+u32 vnet_vxlan_get_tunnel_index (u32 sw_if_index);
+#endif /* included_vnet_vxlan_h */
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */