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Diffstat (limited to 'src/plugins/vxlan/vxlan.h')
| -rw-r--r-- | src/plugins/vxlan/vxlan.h | 240 |
1 files changed, 240 insertions, 0 deletions
diff --git a/src/plugins/vxlan/vxlan.h b/src/plugins/vxlan/vxlan.h new file mode 100644 index 00000000000..ccddedeb279 --- /dev/null +++ b/src/plugins/vxlan/vxlan.h @@ -0,0 +1,240 @@ +/* + * 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> + +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; + +/* +* 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: + */ |