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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_CONTRACT_H__
#define __GBP_CONTRACT_H__
#include <plugins/gbp/gbp_types.h>
#define foreach_gbp_policy_error \
_(ALLOW_NO_SCLASS, "allow-no-sclass") \
_(ALLOW_INTRA, "allow-intra-sclass") \
_(ALLOW_A_BIT, "allow-a-bit-set") \
_(ALLOW_SCLASS_1, "allow-sclass-1") \
_(ALLOW_CONTRACT, "allow-contract") \
_(DROP_CONTRACT, "drop-contract") \
_(DROP_ETHER_TYPE, "drop-ether-type") \
_(DROP_NO_CONTRACT, "drop-no-contract") \
_(DROP_NO_DCLASS, "drop-no-dclass")
/**
* The key for an Contract
*/
typedef struct gbp_contract_key_t_
{
union
{
struct
{
/**
* source and destination EPGs for which the ACL applies
*/
sclass_t gck_src;
sclass_t gck_dst;
};
u32 as_u32;
};
} gbp_contract_key_t;
typedef struct gbp_next_hop_t_
{
fib_node_t gnh_node;
ip46_address_t gnh_ip;
mac_address_t gnh_mac;
index_t gnh_gu;
index_t gnh_bd;
index_t gnh_rd;
u32 gnh_ge;
u32 gnh_sibling;
index_t gnh_ai[FIB_PROTOCOL_IP_MAX];
} gbp_next_hop_t;
#define foreach_gbp_hash_mode \
_(SRC_IP, "src-ip") \
_(DST_IP, "dst-ip") \
_(SYMMETRIC, "symmetric")
typedef enum gbp_hash_mode_t_
{
#define _(v,s) GBP_HASH_MODE_##v,
foreach_gbp_hash_mode
#undef _
} gbp_hash_mode_t;
#define foreach_gbp_rule_action \
_(PERMIT, "permit") \
_(DENY, "deny") \
_(REDIRECT, "redirect")
typedef enum gbp_rule_action_t_
{
#define _(v,s) GBP_RULE_##v,
foreach_gbp_rule_action
#undef _
} gbp_rule_action_t;
#define foreach_gbp_policy_node \
_(L2, "L2") \
_(IP4, "ip4") \
_(IP6, "ip6")
typedef enum gbp_policy_node_t_
{
#define _(v,s) GBP_POLICY_NODE_##v,
foreach_gbp_policy_node
#undef _
} gbp_policy_node_t;
#define GBP_POLICY_N_NODES (GBP_POLICY_NODE_IP6+1)
#define FOR_EACH_GBP_POLICY_NODE(pnode) \
for (pnode = GBP_POLICY_NODE_L2; pnode < GBP_POLICY_N_NODES; pnode++)
typedef struct gbp_rule_t_
{
gbp_rule_action_t gu_action;
gbp_hash_mode_t gu_hash_mode;
index_t *gu_nhs;
/**
* DPO of the load-balance object used to redirect
*/
dpo_id_t gu_dpo[GBP_POLICY_N_NODES][FIB_PROTOCOL_IP_MAX];
} gbp_rule_t;
/**
* A Group Based Policy Contract.
* Determines the ACL that applies to traffic pass between two endpoint groups
*/
typedef struct gbp_contract_t_
{
/**
* source and destination EPGs
*/
gbp_contract_key_t gc_key;
u32 gc_acl_index;
u32 gc_lc_index;
/**
* The ACL to apply for packets from the source to the destination EPG
*/
index_t *gc_rules;
/**
* An ethertype whitelist
*/
u16 *gc_allowed_ethertypes;
} gbp_contract_t;
/**
* EPG src,dst pair to ACL mapping table, aka contract DB
*/
typedef struct gbp_contract_db_t_
{
/**
* We can form a u64 key from the pair, so use a simple hash table
*/
uword *gc_hash;
} gbp_contract_db_t;
extern int gbp_contract_update (sclass_t sclass,
sclass_t dclass,
u32 acl_index,
index_t * rules,
u16 * allowed_ethertypes, u32 * stats_index);
extern int gbp_contract_delete (sclass_t sclass, sclass_t dclass);
extern index_t gbp_rule_alloc (gbp_rule_action_t action,
gbp_hash_mode_t hash_mode, index_t * nhs);
extern index_t gbp_next_hop_alloc (const ip46_address_t * ip,
index_t grd,
const mac_address_t * mac, index_t gbd);
typedef int (*gbp_contract_cb_t) (gbp_contract_t * gbpe, void *ctx);
extern void gbp_contract_walk (gbp_contract_cb_t bgpe, void *ctx);
extern u8 *format_gbp_contract (u8 * s, va_list * args);
/**
* DP functions and databases
*/
extern gbp_contract_db_t gbp_contract_db;
always_inline index_t
gbp_contract_find (gbp_contract_key_t * key)
{
uword *p;
p = hash_get (gbp_contract_db.gc_hash, key->as_u32);
if (NULL != p)
return (p[0]);
return (INDEX_INVALID);
}
extern gbp_contract_t *gbp_contract_pool;
always_inline gbp_contract_t *
gbp_contract_get (index_t gci)
{
return (pool_elt_at_index (gbp_contract_pool, gci));
}
extern gbp_rule_t *gbp_rule_pool;
always_inline gbp_rule_t *
gbp_rule_get (index_t gui)
{
return (pool_elt_at_index (gbp_rule_pool, gui));
}
extern vlib_combined_counter_main_t gbp_contract_permit_counters;
extern vlib_combined_counter_main_t gbp_contract_drop_counters;
#endif
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
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