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Diffstat (limited to 'src/vnet/geneve/geneve.h')
| -rw-r--r-- | src/vnet/geneve/geneve.h | 213 |
1 files changed, 213 insertions, 0 deletions
diff --git a/src/vnet/geneve/geneve.h b/src/vnet/geneve/geneve.h new file mode 100644 index 00000000000..2976043ed0f --- /dev/null +++ b/src/vnet/geneve/geneve.h @@ -0,0 +1,213 @@ +/* + * Copyright (c) 2017 SUSE LLC. + * 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_geneve_h +#define included_vnet_geneve_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/geneve/geneve_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> + +#define SUPPORT_OPTIONS_HEADER 0 + +typedef CLIB_PACKED (struct + { + ip4_header_t ip4; /* 20 bytes */ + udp_header_t udp; /* 8 bytes */ + geneve_header_t geneve; /* Min 8 bytes, Max 260 bytes */ + }) ip4_geneve_header_t; + +typedef CLIB_PACKED (struct + { + ip6_header_t ip6; /* 40 bytes */ + udp_header_t udp; /* 8 bytes */ + geneve_header_t geneve; /* Min 8 bytes, Max 260 bytes */ + }) ip6_geneve_header_t; + +typedef CLIB_PACKED (struct + { + /* + * Key fields: ip source and geneve vni on incoming GENEVE packet + * all fields in NET byte order + */ + union + { + struct + { + u32 remote; + u32 vni; /* shifted left 8 bits */ + }; + u64 as_u64; + }; + }) geneve4_tunnel_key_t; + +typedef CLIB_PACKED (struct + { + /* + * Key fields: ip source and geneve vni on incoming GENEVE packet + * all fields in NET byte order + */ + ip6_address_t remote; + u32 vni; /* shifted left 8 bits */ + }) geneve6_tunnel_key_t; + +typedef struct +{ + /* Rewrite string. $$$$ embed vnet_rewrite header */ + u8 *rewrite; + + /* FIB DPO for IP forwarding of GENEVE encap packet */ + dpo_id_t next_dpo; + + /* geneve VNI in HOST byte order */ + u32 vni; + + /* geneve OPTIONS LEN in HOST byte order */ +#if SUPPORT_OPTIONS_HEADER==1 + u8 options_len; +#endif + + /* tunnel local and remote addresses */ + ip46_address_t local; + ip46_address_t remote; + + /* mcast packet output intfc index (used only if remote is mcast) */ + u32 mcast_sw_if_index; + + /* decap next index */ + u32 decap_next_index; + + /* The FIB index for local/remote 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 GENEVE tunnel is unicast or mcast) + * sending unicast GENEVE encap packets or receiving mcast GENEVE 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; +} geneve_tunnel_t; + +#define foreach_geneve_input_next \ +_(DROP, "error-drop") \ +_(L2_INPUT, "l2-input") + +typedef enum +{ +#define _(s,n) GENEVE_INPUT_NEXT_##s, + foreach_geneve_input_next +#undef _ + GENEVE_INPUT_N_NEXT, +} geneve_input_next_t; + +typedef enum +{ +#define geneve_error(n,s) GENEVE_ERROR_##n, +#include <vnet/geneve/geneve_error.def> +#undef geneve_error + GENEVE_N_ERROR, +} geneve_input_error_t; + +typedef struct +{ + /* vector of encap tunnel instances */ + geneve_tunnel_t *tunnels; + + /* lookup tunnel by key */ + uword *geneve4_tunnel_by_key; /* keyed on ipv4.remote + vni */ + uword *geneve6_tunnel_by_key; /* keyed on ipv6.remote + vni */ + + /* local VTEP IPs ref count used by geneve-bypass node to check if + received GENEVE 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_geneve_tunnel_hw_if_indices; + + /* Mapping from sw_if_index to tunnel index */ + u32 *tunnel_index_by_sw_if_index; + + /* convenience */ + vlib_main_t *vlib_main; + vnet_main_t *vnet_main; +} geneve_main_t; + +geneve_main_t geneve_main; + +extern vlib_node_registration_t geneve4_input_node; +extern vlib_node_registration_t geneve6_input_node; +extern vlib_node_registration_t geneve4_encap_node; +extern vlib_node_registration_t geneve6_encap_node; + +u8 *format_geneve_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 abreaking change */ + u8 is_ip6; + ip46_address_t local, remote; + u32 mcast_sw_if_index; + u32 encap_fib_index; + u32 decap_next_index; + u32 vni; +} vnet_geneve_add_del_tunnel_args_t; + +int vnet_geneve_add_del_tunnel + (vnet_geneve_add_del_tunnel_args_t * a, u32 * sw_if_indexp); + +void vnet_int_geneve_bypass_mode (u32 sw_if_index, u8 is_ip6, u8 is_enable); +#endif /* included_vnet_geneve_h */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ |