/* * 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. */ /** * @file * @brief VXLAN GPE definitions * */ #ifndef included_vnet_vxlan_gpe_h #define included_vnet_vxlan_gpe_h #include <vppinfra/error.h> #include <vppinfra/hash.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-gpe/vxlan_gpe_packet.h> #include <vnet/ip/ip4_packet.h> #include <vnet/ip/ip6_packet.h> #include <vnet/udp/udp.h> #include <vnet/dpo/dpo.h> #include <vnet/adj/adj_types.h> /** * @brief VXLAN GPE header struct * */ /* *INDENT-OFF* */ typedef CLIB_PACKED (struct { /** 20 bytes */ ip4_header_t ip4; /** 8 bytes */ udp_header_t udp; /** 8 bytes */ vxlan_gpe_header_t vxlan; }) ip4_vxlan_gpe_header_t; /* *INDENT-ON* */ /* *INDENT-OFF* */ typedef CLIB_PACKED (struct { /** 40 bytes */ ip6_header_t ip6; /** 8 bytes */ udp_header_t udp; /** 8 bytes */ vxlan_gpe_header_t vxlan; }) ip6_vxlan_gpe_header_t; /* *INDENT-ON* */ /** * @brief Key struct for IPv4 VXLAN GPE tunnel. * Key fields: local remote, vni * all fields in NET byte order * VNI shifted 8 bits */ /* *INDENT-OFF* */ typedef CLIB_PACKED(struct { union { struct { u32 local; u32 remote; u32 vni; u32 pad; }; u64 as_u64[2]; }; }) vxlan4_gpe_tunnel_key_t; /* *INDENT-ON* */ /** * @brief Key struct for IPv6 VXLAN GPE tunnel. * Key fields: local remote, vni * all fields in NET byte order * VNI shifted 8 bits */ /* *INDENT-OFF* */ typedef CLIB_PACKED(struct { ip6_address_t local; ip6_address_t remote; u32 vni; }) vxlan6_gpe_tunnel_key_t; /* *INDENT-ON* */ /** * @brief Struct for VXLAN GPE tunnel */ typedef struct { /* Required for pool_get_aligned */ CLIB_CACHE_LINE_ALIGN_MARK (cacheline0); /** Rewrite string. $$$$ embed vnet_rewrite header */ u8 *rewrite; /** encapsulated protocol */ u8 protocol; /* FIB DPO for IP forwarding of VXLAN-GPE encap packet */ dpo_id_t next_dpo; /** tunnel local address */ ip46_address_t local; /** tunnel remote address */ ip46_address_t remote; /* mcast packet output intfc index (used only if dst is mcast) */ u32 mcast_sw_if_index; /** FIB indices - tunnel partner lookup here */ u32 encap_fib_index; /** FIB indices - inner IP packet lookup here */ u32 decap_fib_index; /** VXLAN GPE VNI in HOST byte order, shifted left 8 bits */ u32 vni; /** vnet intfc hw_if_index */ u32 hw_if_index; /** vnet intfc sw_if_index */ u32 sw_if_index; /** flags */ u32 flags; /** rewrite size for dynamic plugins like iOAM */ u8 rewrite_size; /** Next node after VxLAN-GPE encap */ uword encap_next_node; /** * Linkage into the FIB object graph */ fib_node_t node; /* * The FIB entry for (depending on VXLAN-GPE tunnel is unicast or mcast) * sending unicast VXLAN-GPE encap packets or receiving mcast VXLAN-GPE 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; } vxlan_gpe_tunnel_t; /** Flags for vxlan_gpe_tunnel_t */ #define VXLAN_GPE_TUNNEL_IS_IPV4 1 /** next nodes for VXLAN GPE input */ #define foreach_vxlan_gpe_input_next \ _(DROP, "error-drop") \ _(IP4_INPUT, "ip4-input") \ _(IP6_INPUT, "ip6-input") \ _(L2_INPUT, "l2-input") /** struct for next nodes for VXLAN GPE input */ typedef enum { #define _(s,n) VXLAN_GPE_INPUT_NEXT_##s, foreach_vxlan_gpe_input_next #undef _ VXLAN_GPE_INPUT_N_NEXT, } vxlan_gpe_input_next_t; /** struct for VXLAN GPE errors */ typedef enum { #define vxlan_gpe_error(n,s) VXLAN_GPE_ERROR_##n, #include <vnet/vxlan-gpe/vxlan_gpe_error.def> #undef vxlan_gpe_error VXLAN_GPE_N_ERROR, } vxlan_gpe_input_error_t; /** Struct for VXLAN GPE node state */ typedef struct { /** vector of encap tunnel instances */ vxlan_gpe_tunnel_t *tunnels; /** lookup IPv4 VXLAN GPE tunnel by key */ uword *vxlan4_gpe_tunnel_by_key; /** lookup IPv6 VXLAN GPE tunnel by key */ uword *vxlan6_gpe_tunnel_by_key; /* 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 */ /** Free vlib hw_if_indices */ u32 *free_vxlan_gpe_tunnel_hw_if_indices; /** Mapping from sw_if_index to tunnel index */ u32 *tunnel_index_by_sw_if_index; /** State convenience vlib_main_t */ vlib_main_t *vlib_main; /** State convenience vnet_main_t */ vnet_main_t *vnet_main; /** List of next nodes for the decap indexed on protocol */ uword decap_next_node_list[VXLAN_GPE_PROTOCOL_MAX]; } vxlan_gpe_main_t; extern vxlan_gpe_main_t vxlan_gpe_main; extern vlib_node_registration_t vxlan_gpe_encap_node; extern vlib_node_registration_t vxlan4_gpe_input_node; extern vlib_node_registration_t vxlan6_gpe_input_node; u8 *format_vxlan_gpe_encap_trace (u8 * s, va_list * args); /** Struct for VXLAN GPE add/del args */ typedef struct { u8 is_add; u8 is_ip6; ip46_address_t local, remote; u8 protocol; u32 mcast_sw_if_index; u32 encap_fib_index; u32 decap_fib_index; u32 vni; } vnet_vxlan_gpe_add_del_tunnel_args_t; int vnet_vxlan_gpe_add_del_tunnel (vnet_vxlan_gpe_add_del_tunnel_args_t * a, u32 * sw_if_indexp); int vxlan4_gpe_rewrite (vxlan_gpe_tunnel_t * t, u32 extension_size, u8 protocol_override, uword encap_next_node); int vxlan6_gpe_rewrite (vxlan_gpe_tunnel_t * t, u32 extension_size, u8 protocol_override, uword encap_next_node); /** * @brief Struct for defining VXLAN GPE next nodes */ typedef enum { VXLAN_GPE_ENCAP_NEXT_IP4_LOOKUP, VXLAN_GPE_ENCAP_NEXT_IP6_LOOKUP, VXLAN_GPE_ENCAP_NEXT_DROP, VXLAN_GPE_ENCAP_N_NEXT } vxlan_gpe_encap_next_t; void vxlan_gpe_unregister_decap_protocol (u8 protocol_id, uword next_node_index); void vxlan_gpe_register_decap_protocol (u8 protocol_id, uword next_node_index); void vnet_int_vxlan_gpe_bypass_mode (u32 sw_if_index, u8 is_ip6, u8 is_enable); #endif /* included_vnet_vxlan_gpe_h */ /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */