/* * 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 <vnet/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 <vnet/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: */