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Diffstat (limited to 'src/vnet/lisp-gpe/lisp_gpe.h')
| -rw-r--r-- | src/vnet/lisp-gpe/lisp_gpe.h | 257 |
1 files changed, 257 insertions, 0 deletions
diff --git a/src/vnet/lisp-gpe/lisp_gpe.h b/src/vnet/lisp-gpe/lisp_gpe.h new file mode 100644 index 00000000..bb0f788b --- /dev/null +++ b/src/vnet/lisp-gpe/lisp_gpe.h @@ -0,0 +1,257 @@ +/* + * Copyright (c) 2016 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 LISP-GPE definitions. + */ + +#ifndef included_vnet_lisp_gpe_h +#define included_vnet_lisp_gpe_h + +#include <vppinfra/error.h> +#include <vppinfra/mhash.h> +#include <vnet/vnet.h> +#include <vnet/ip/ip.h> +#include <vnet/l2/l2_input.h> +#include <vnet/ethernet/ethernet.h> +#include <vnet/ip/ip4_packet.h> +#include <vnet/ip/udp.h> +#include <vnet/lisp-cp/lisp_types.h> +#include <vnet/lisp-gpe/lisp_gpe_packet.h> +#include <vnet/adj/adj_types.h> + +/** IP4-UDP-LISP encap header */ +/* *INDENT-OFF* */ +typedef CLIB_PACKED (struct { + ip4_header_t ip4; /* 20 bytes */ + udp_header_t udp; /* 8 bytes */ + lisp_gpe_header_t lisp; /* 8 bytes */ +}) ip4_udp_lisp_gpe_header_t; +/* *INDENT-ON* */ + +/** IP6-UDP-LISP encap header */ +/* *INDENT-OFF* */ +typedef CLIB_PACKED (struct { + ip6_header_t ip6; /* 40 bytes */ + udp_header_t udp; /* 8 bytes */ + lisp_gpe_header_t lisp; /* 8 bytes */ +}) ip6_udp_lisp_gpe_header_t; +/* *INDENT-ON* */ + +#define foreach_lisp_gpe_ip_input_next \ +_(DROP, "error-drop") \ +_(IP4_INPUT, "ip4-input") \ +_(IP6_INPUT, "ip6-input") \ +_(L2_INPUT, "l2-input") + +/** Enum of possible next nodes post LISP-GPE decap */ +typedef enum +{ +#define _(s,n) LISP_GPE_INPUT_NEXT_##s, + foreach_lisp_gpe_ip_input_next +#undef _ + LISP_GPE_INPUT_N_NEXT, +} lisp_gpe_input_next_t; + +typedef enum +{ +#define lisp_gpe_error(n,s) LISP_GPE_ERROR_##n, +#include <vnet/lisp-gpe/lisp_gpe_error.def> +#undef lisp_gpe_error + LISP_GPE_N_ERROR, +} lisp_gpe_error_t; + +typedef struct tunnel_lookup +{ + /** Lookup lisp-gpe interfaces by dp table (eg. vrf/bridge index) */ + uword *hw_if_index_by_dp_table; + + /** lookup decap tunnel termination sw_if_index by vni and vice versa */ + uword *sw_if_index_by_vni; + + // FIXME - Need this? + uword *vni_by_sw_if_index; +} tunnel_lookup_t; + +/** LISP-GPE global state*/ +typedef struct lisp_gpe_main +{ + /** + * @brief DB of all forwarding entries. The Key is:{l-EID,r-EID,vni} + * where the EID encodes L2 or L3 + */ + uword *lisp_gpe_fwd_entries; + + /** + * @brief A Pool of all LISP forwarding entries + */ + struct lisp_gpe_fwd_entry_t_ *lisp_fwd_entry_pool; + + /** Free vlib hw_if_indices */ + u32 *free_tunnel_hw_if_indices; + + u8 is_en; + + /* L3 data structures + * ================== */ + tunnel_lookup_t l3_ifaces; + + /* L2 data structures + * ================== */ + + /** L2 LISP FIB */ + BVT (clib_bihash) l2_fib; + + tunnel_lookup_t l2_ifaces; + + /** Load-balance for a miss in the table */ + dpo_id_t l2_lb_cp_lkup; + + /** convenience */ + vlib_main_t *vlib_main; + vnet_main_t *vnet_main; + ip4_main_t *im4; + ip6_main_t *im6; + ip_lookup_main_t *lm4; + ip_lookup_main_t *lm6; +} lisp_gpe_main_t; + +/** LISP-GPE global state*/ +lisp_gpe_main_t lisp_gpe_main; + +always_inline lisp_gpe_main_t * +vnet_lisp_gpe_get_main () +{ + return &lisp_gpe_main; +} + + +extern vlib_node_registration_t lisp_gpe_ip4_input_node; +extern vlib_node_registration_t lisp_gpe_ip6_input_node; +extern vnet_hw_interface_class_t lisp_gpe_hw_class; + +u8 *format_lisp_gpe_header_with_length (u8 * s, va_list * args); + +/** Read LISP-GPE status */ +u8 vnet_lisp_gpe_enable_disable_status (void); + +u32 +lisp_gpe_l3_iface_find_or_create (lisp_gpe_main_t * lgm, + u32 overlay_table_id, u32 vni); + +/** Add/del LISP-GPE interface. */ +extern void lisp_gpe_del_l2_iface (lisp_gpe_main_t * lgm, u32 vni, u32 bd_id); +extern u32 lisp_gpe_add_l2_iface (lisp_gpe_main_t * lgm, u32 vni, u32 bd_id); +extern void lisp_gpe_del_l3_iface (lisp_gpe_main_t * lgm, u32 vni, u32 bd_id); +extern u32 lisp_gpe_add_l3_iface (lisp_gpe_main_t * lgm, u32 vni, u32 bd_id); + + +typedef struct +{ + u8 is_en; +} vnet_lisp_gpe_enable_disable_args_t; + +clib_error_t + * vnet_lisp_gpe_enable_disable (vnet_lisp_gpe_enable_disable_args_t * a); + +typedef enum +{ + NO_ACTION, + FORWARD_NATIVE, + SEND_MAP_REQUEST, + DROP +} negative_fwd_actions_e; + +/** */ +typedef struct +{ + u8 is_add; + + /** type of mapping */ + u8 is_negative; + + /** action for negative mappings */ + negative_fwd_actions_e action; + + /** local eid */ + gid_address_t lcl_eid; + + /** remote eid */ + gid_address_t rmt_eid; + + /** vector of locator pairs */ + locator_pair_t *locator_pairs; + + /** FIB index to lookup remote locator at encap */ + u32 encap_fib_index; + + /** FIB index to lookup inner IP at decap */ + u32 decap_fib_index; + + /* TODO remove */ + u32 decap_next_index; + + /** VNI/tenant id in HOST byte order */ + u32 vni; + + /** vrf or bd where fwd entry should be inserted */ + union + { + /** table (vrf) id */ + u32 table_id; + + /** bridge domain id */ + u16 bd_id; + + /** generic access */ + u32 dp_table; + }; +} vnet_lisp_gpe_add_del_fwd_entry_args_t; + +#define foreach_lgpe_ip4_lookup_next \ + _(DROP, "error-drop") \ + _(LISP_CP_LOOKUP, "lisp-cp-lookup") + +typedef enum lgpe_ip4_lookup_next +{ +#define _(sym,str) LGPE_IP4_LOOKUP_NEXT_##sym, + foreach_lgpe_ip4_lookup_next +#undef _ + LGPE_IP4_LOOKUP_N_NEXT, +} lgpe_ip4_lookup_next_t; + +#define foreach_lgpe_ip6_lookup_next \ + _(DROP, "error-drop") \ + _(LISP_CP_LOOKUP, "lisp-cp-lookup") + +typedef enum lgpe_ip6_lookup_next +{ +#define _(sym,str) LGPE_IP6_LOOKUP_NEXT_##sym, + foreach_lgpe_ip6_lookup_next +#undef _ + LGPE_IP6_LOOKUP_N_NEXT, +} lgpe_ip6_lookup_next_t; + +u8 *format_vnet_lisp_gpe_status (u8 * s, va_list * args); + +#endif /* included_vnet_lisp_gpe_h */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ |