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authorSteven Luong <sluong@cisco.com>2022-10-24 09:10:59 -0700
committerDave Wallace <dwallacelf@gmail.com>2023-01-19 21:37:25 +0000
commit8bd4db5996ba1144f659ea5341f1c2727c650bcd (patch)
tree05ebf7985499bf10b842faf68af2c1d4a5d7c138 /src/plugins/vxlan/vxlan.h
parentdd2eff6d060c787e4a49863c9b97bde7215f7740 (diff)
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
Diffstat (limited to 'src/plugins/vxlan/vxlan.h')
-rw-r--r--src/plugins/vxlan/vxlan.h242
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:
+ */