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-/*
- * Copyright (c) 2018 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 __GBP_ENDPOINT_H__
-#define __GBP_ENDPOINT_H__
-
-#include <plugins/gbp/gbp_types.h>
-#include <plugins/gbp/gbp_itf.h>
-#include <vnet/ip/ip.h>
-#include <vnet/ethernet/mac_address.h>
-
-#include <vppinfra/bihash_16_8.h>
-#include <vppinfra/bihash_template.h>
-#include <vppinfra/bihash_24_8.h>
-#include <vppinfra/bihash_template.h>
-
-/**
- * Flags for each endpoint
- */
-typedef enum gbp_endpoint_attr_t_
-{
- GBP_ENDPOINT_ATTR_FIRST = 0,
- GBP_ENDPOINT_ATTR_BOUNCE = GBP_ENDPOINT_ATTR_FIRST,
- GBP_ENDPOINT_ATTR_REMOTE,
- GBP_ENDPOINT_ATTR_LEARNT,
- GBP_ENDPOINT_ATTR_EXTERNAL,
- GBP_ENDPOINT_ATTR_LAST,
-} gbp_endpoint_attr_t;
-
-typedef enum gbp_endpoint_flags_t_
-{
- GBP_ENDPOINT_FLAG_NONE = 0,
- GBP_ENDPOINT_FLAG_BOUNCE = (1 << GBP_ENDPOINT_ATTR_BOUNCE),
- GBP_ENDPOINT_FLAG_REMOTE = (1 << GBP_ENDPOINT_ATTR_REMOTE),
- GBP_ENDPOINT_FLAG_LEARNT = (1 << GBP_ENDPOINT_ATTR_LEARNT),
- GBP_ENDPOINT_FLAG_EXTERNAL = (1 << GBP_ENDPOINT_ATTR_EXTERNAL),
-} gbp_endpoint_flags_t;
-
-#define GBP_ENDPOINT_ATTR_NAMES { \
- [GBP_ENDPOINT_ATTR_BOUNCE] = "bounce", \
- [GBP_ENDPOINT_ATTR_REMOTE] = "remote", \
- [GBP_ENDPOINT_ATTR_LEARNT] = "learnt", \
- [GBP_ENDPOINT_ATTR_EXTERNAL] = "external", \
-}
-
-extern u8 *format_gbp_endpoint_flags (u8 * s, va_list * args);
-
-/**
- * Sources of Endpoints in priority order. The best (lowest value) source
- * provides the forwarding information.
- * Data-plane takes preference because the CP data is not always complete,
- * it may not have the sclass.
- */
-#define foreach_gbp_endpoint_src \
- _(DP, "data-plane") \
- _(CP, "control-plane") \
- _(RR, "recursive-resolution")
-
-typedef enum gbp_endpoint_src_t_
-{
-#define _(v,s) GBP_ENDPOINT_SRC_##v,
- foreach_gbp_endpoint_src
-#undef _
-} gbp_endpoint_src_t;
-
-#define GBP_ENDPOINT_SRC_MAX (GBP_ENDPOINT_SRC_RR+1)
-
-extern u8 *format_gbp_endpoint_src (u8 * s, va_list * args);
-
-/**
- * This is the identity of an endpoint, as such it is information
- * about an endpoint that is idempotent.
- * The ID is used to add the EP into the various data-bases for retrieval.
- */
-typedef struct gbp_endpoint_key_t_
-{
- /**
- * A vector of ip addresses that belong to the endpoint.
- * Together with the route EPG's RD this forms the EP's L3 key
- */
- fib_prefix_t *gek_ips;
-
- /**
- * MAC address of the endpoint.
- * Together with the route EPG's BD this forms the EP's L2 key
- */
- mac_address_t gek_mac;
-
- /**
- * Index of the Bridge-Domain
- */
- index_t gek_gbd;
-
- /**
- * Index of the Route-Domain
- */
- index_t gek_grd;
-} gbp_endpoint_key_t;
-
-/**
- * Information about the location of the endpoint provided by a source
- * of endpoints
- */
-typedef struct gbp_endpoint_loc_t_
-{
- /**
- * The source providing this location information
- */
- gbp_endpoint_src_t gel_src;
-
- /**
- * The interface on which the EP is connected
- */
- gbp_itf_hdl_t gel_itf;
-
- /**
- * Endpoint flags
- */
- gbp_endpoint_flags_t gel_flags;
-
- /**
- * Endpoint Group.
- */
- index_t gel_epg;
-
- /**
- * number of times this source has locked this
- */
- u32 gel_locks;
-
- /**
- * Tunnel info for remote endpoints
- */
- struct
- {
- u32 gel_parent_sw_if_index;
- ip46_address_t gel_src;
- ip46_address_t gel_dst;
- } tun;
-} gbp_endpoint_loc_t;
-
-/**
- * And endpoints current forwarding state
- */
-typedef struct gbp_endpoint_fwd_t_
-{
- /**
- * The interface on which the EP is connected
- */
- gbp_itf_hdl_t gef_itf;
-
- /**
- * The L3 adj, if created
- */
- index_t *gef_adjs;
-
- /**
- * Endpoint Group's sclass. cached for fast DP access.
- */
- sclass_t gef_sclass;
-
- /**
- * FIB index the EP is in
- */
- u32 gef_fib_index;
-
- gbp_endpoint_flags_t gef_flags;
-} gbp_endpoint_fwd_t;
-
-/**
- * A Group Based Policy Endpoint.
- * This is typically a VM or container. If the endpoint is local (i.e. on
- * the same compute node as VPP) then there is one interface per-endpoint.
- * If the EP is remote,e.g. reachable over a [vxlan] tunnel, then there
- * will be multiple EPs reachable over the tunnel and they can be distinguished
- * via either their MAC or IP Address[es].
- */
-typedef struct gbp_endpoint_t_
-{
- /**
- * A FIB node that allows the tracking of children.
- */
- fib_node_t ge_node;
-
- /**
- * The key/ID of this EP
- */
- gbp_endpoint_key_t ge_key;
-
- /**
- * Location information provided by the various sources.
- * These are sorted based on source priority.
- */
- gbp_endpoint_loc_t *ge_locs;
-
- gbp_endpoint_fwd_t ge_fwd;
-
- /**
- * The last time a packet from seen from this end point
- */
- f64 ge_last_time;
-} gbp_endpoint_t;
-
-extern u8 *format_gbp_endpoint (u8 * s, va_list * args);
-
-/**
- * GBP Endpoint Databases
- */
-typedef struct gbp_ep_by_ip_itf_db_t_
-{
- index_t *ged_by_sw_if_index;
- clib_bihash_24_8_t ged_by_ip_rd;
- clib_bihash_16_8_t ged_by_mac_bd;
-} gbp_ep_db_t;
-
-extern int gbp_endpoint_update_and_lock (gbp_endpoint_src_t src,
- u32 sw_if_index,
- const ip46_address_t * ip,
- const mac_address_t * mac,
- index_t gbd, index_t grd,
- sclass_t sclass,
- gbp_endpoint_flags_t flags,
- const ip46_address_t * tun_src,
- const ip46_address_t * tun_dst,
- u32 * handle);
-extern void gbp_endpoint_unlock (gbp_endpoint_src_t src, index_t gbpei);
-extern u32 gbp_endpoint_child_add (index_t gei,
- fib_node_type_t type,
- fib_node_index_t index);
-extern void gbp_endpoint_child_remove (index_t gei, u32 sibling);
-
-typedef walk_rc_t (*gbp_endpoint_cb_t) (index_t gbpei, void *ctx);
-extern void gbp_endpoint_walk (gbp_endpoint_cb_t cb, void *ctx);
-extern void gbp_endpoint_scan (vlib_main_t * vm);
-extern int gbp_endpoint_is_remote (const gbp_endpoint_t * ge);
-extern int gbp_endpoint_is_local (const gbp_endpoint_t * ge);
-extern int gbp_endpoint_is_external (const gbp_endpoint_t * ge);
-extern int gbp_endpoint_is_learnt (const gbp_endpoint_t * ge);
-
-
-extern void gbp_endpoint_flush (gbp_endpoint_src_t src, u32 sw_if_index);
-
-/**
- * DP functions and databases
- */
-extern gbp_ep_db_t gbp_ep_db;
-extern gbp_endpoint_t *gbp_endpoint_pool;
-
-/**
- * Get the endpoint from a port/interface
- */
-always_inline gbp_endpoint_t *
-gbp_endpoint_get (index_t gbpei)
-{
- return (pool_elt_at_index (gbp_endpoint_pool, gbpei));
-}
-
-static_always_inline void
-gbp_endpoint_mk_key_mac (const u8 * mac,
- u32 bd_index, clib_bihash_kv_16_8_t * key)
-{
- key->key[0] = ethernet_mac_address_u64 (mac);
- key->key[1] = bd_index;
-}
-
-static_always_inline gbp_endpoint_t *
-gbp_endpoint_find_mac (const u8 * mac, u32 bd_index)
-{
- clib_bihash_kv_16_8_t key, value;
- int rv;
-
- gbp_endpoint_mk_key_mac (mac, bd_index, &key);
-
- rv = clib_bihash_search_16_8 (&gbp_ep_db.ged_by_mac_bd, &key, &value);
-
- if (0 != rv)
- return NULL;
-
- return (gbp_endpoint_get (value.value));
-}
-
-static_always_inline void
-gbp_endpoint_mk_key_ip (const ip46_address_t * ip,
- u32 fib_index, clib_bihash_kv_24_8_t * key)
-{
- key->key[0] = ip->as_u64[0];
- key->key[1] = ip->as_u64[1];
- key->key[2] = fib_index;
-}
-
-static_always_inline void
-gbp_endpoint_mk_key_ip4 (const ip4_address_t * ip,
- u32 fib_index, clib_bihash_kv_24_8_t * key)
-{
- const ip46_address_t a = {
- .ip4 = *ip,
- };
- gbp_endpoint_mk_key_ip (&a, fib_index, key);
-}
-
-static_always_inline gbp_endpoint_t *
-gbp_endpoint_find_ip4 (const ip4_address_t * ip, u32 fib_index)
-{
- clib_bihash_kv_24_8_t key, value;
- int rv;
-
- gbp_endpoint_mk_key_ip4 (ip, fib_index, &key);
-
- rv = clib_bihash_search_24_8 (&gbp_ep_db.ged_by_ip_rd, &key, &value);
-
- if (0 != rv)
- return NULL;
-
- return (gbp_endpoint_get (value.value));
-}
-
-static_always_inline void
-gbp_endpoint_mk_key_ip6 (const ip6_address_t * ip,
- u32 fib_index, clib_bihash_kv_24_8_t * key)
-{
- key->key[0] = ip->as_u64[0];
- key->key[1] = ip->as_u64[1];
- key->key[2] = fib_index;
-}
-
-static_always_inline gbp_endpoint_t *
-gbp_endpoint_find_ip6 (const ip6_address_t * ip, u32 fib_index)
-{
- clib_bihash_kv_24_8_t key, value;
- int rv;
-
- gbp_endpoint_mk_key_ip6 (ip, fib_index, &key);
-
- rv = clib_bihash_search_24_8 (&gbp_ep_db.ged_by_ip_rd, &key, &value);
-
- if (0 != rv)
- return NULL;
-
- return (gbp_endpoint_get (value.value));
-}
-
-static_always_inline gbp_endpoint_t *
-gbp_endpoint_find_itf (u32 sw_if_index)
-{
- index_t gei;
-
- gei = gbp_ep_db.ged_by_sw_if_index[sw_if_index];
-
- if (INDEX_INVALID != gei)
- return (gbp_endpoint_get (gei));
-
- return (NULL);
-}
-
-
-#endif
-
-/*
- * fd.io coding-style-patch-verification: ON
- *
- * Local Variables:
- * eval: (c-set-style "gnu")
- * End:
- */