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Diffstat (limited to 'src/vnet/vxlan-gpe/vxlan_gpe.h')
| -rw-r--r-- | src/vnet/vxlan-gpe/vxlan_gpe.h | 259 |
1 files changed, 259 insertions, 0 deletions
diff --git a/src/vnet/vxlan-gpe/vxlan_gpe.h b/src/vnet/vxlan-gpe/vxlan_gpe.h new file mode 100644 index 00000000..c348b5d5 --- /dev/null +++ b/src/vnet/vxlan-gpe/vxlan_gpe.h @@ -0,0 +1,259 @@ +/* + * 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/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 + * + */ +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; + +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; + +/** + * @brief Key struct for IPv4 VXLAN GPE tunnel. + * Key fields: local remote, vni + * all fields in NET byte order + * VNI shifted 8 bits + */ +typedef CLIB_PACKED(struct { + union { + struct { + u32 local; + u32 remote; + + u32 vni; + u32 pad; + }; + u64 as_u64[2]; + }; +}) vxlan4_gpe_tunnel_key_t; + +/** + * @brief Key struct for IPv6 VXLAN GPE tunnel. + * Key fields: local remote, vni + * all fields in NET byte order + * VNI shifted 8 bits + */ +typedef CLIB_PACKED(struct { + ip6_address_t local; + ip6_address_t remote; + u32 vni; +}) vxlan6_gpe_tunnel_key_t; + +/** + * @brief Struct for VXLAN GPE tunnel + */ +typedef struct { + /** 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 desintion. 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") \ +_(ETHERNET_INPUT, "ethernet-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 */ + uword * vtep4; /* local ip4 VTEPs keyed on their ip4 addr */ + uword * vtep6; /* local ip6 VTEPs keyed on their ip6 addr */ + /* 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; + +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 */ |