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Vector Packet Processing
lookup_dpo.h
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1 /*
2  * Copyright (c) 2016 Cisco and/or its affiliates.
3  * Licensed under the Apache License, Version 2.0 (the "License");
4  * you may not use this file except in compliance with the License.
5  * You may obtain a copy of the License at:
6  *
7  * http://www.apache.org/licenses/LICENSE-2.0
8  *
9  * Unless required by applicable law or agreed to in writing, software
10  * distributed under the License is distributed on an "AS IS" BASIS,
11  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12  * See the License for the specific language governing permissions and
13  * limitations under the License.
14  */
15 
16 #ifndef __LOOKUP_DPO_H__
17 #define __LOOKUP_DPO_H__
18 
19 #include <vnet/vnet.h>
20 #include <vnet/fib/fib_types.h>
21 #include <vnet/dpo/dpo.h>
22 
23 /**
24  * Switch to use the packet's source or destination address for lookup
25  */
26 typedef enum lookup_input_t_ {
29 } __attribute__ ((packed)) lookup_input_t;
30 
31 #define LOOKUP_INPUTS { \
32  [LOOKUP_INPUT_SRC_ADDR] = "src-address", \
33  [LOOKUP_INPUT_DST_ADDR] = "dst-address", \
34 }
35 
36 /**
37  * Switch to use the packet's source or destination address for lookup
38  */
39 typedef enum lookup_table_t_ {
42 } __attribute__ ((packed)) lookup_table_t;
43 
44 #define LOOKUP_TABLES { \
45  [LOOKUP_TABLE_FROM_INPUT_INTERFACE] = "table-input-interface", \
46  [LOOKUP_TABLE_FROM_CONFIG] = "table-configured", \
47 }
48 
49 /**
50  * Switch to use the packet's source or destination address for lookup
51  */
52 typedef enum lookup_cast_t_ {
55 } __attribute__ ((packed)) lookup_cast_t;
56 
57 #define LOOKUP_CASTS { \
58  [LOOKUP_UNICAST] = "unicast", \
59  [LOOKUP_MULTICAST] = "multicast", \
60 }
61 
62 /**
63  * A representation of an MPLS label for imposition in the data-path
64  */
65 typedef struct lookup_dpo_t
66 {
67  /**
68  * The FIB, or interface from which to get a FIB, in which to perform
69  * the next lookup;
70  */
72 
73  /**
74  * The protocol of the FIB for the lookup, and hence
75  * the protocol of the packet
76  */
78 
79  /**
80  * Switch to use src or dst address
81  */
82  lookup_input_t lkd_input;
83 
84  /**
85  * Switch to use the table index passed, or the table of the input interface
86  */
87  lookup_table_t lkd_table;
88 
89  /**
90  * Unicast of rmulticast FIB lookup
91  */
92  lookup_cast_t lkd_cast;
93 
94  /**
95  * Number of locks
96  */
98 } lookup_dpo_t;
99 
101  dpo_proto_t proto,
102  lookup_cast_t cast,
103  lookup_input_t input,
104  lookup_table_t table,
105  dpo_id_t *dpo);
106 extern void lookup_dpo_add_or_lock_w_table_id(u32 table_id,
107  dpo_proto_t proto,
108  lookup_cast_t cast,
109  lookup_input_t input,
110  lookup_table_t table,
111  dpo_id_t *dpo);
112 
113 extern u8* format_lookup_dpo(u8 *s, va_list *args);
114 
115 /*
116  * Encapsulation violation for fast data-path access
117  */
119 
120 static inline lookup_dpo_t *
122 {
123  return (pool_elt_at_index(lookup_dpo_pool, index));
124 }
125 
126 extern void lookup_dpo_module_init(void);
127 
128 #endif
lookup_input_t lkd_input
Switch to use src or dst address.
Definition: lookup_dpo.h:82
A representation of an MPLS label for imposition in the data-path.
Definition: lookup_dpo.h:65
lookup_cast_t_
Switch to use the packet&#39;s source or destination address for lookup.
Definition: lookup_dpo.h:52
u32 index_t
A Data-Path Object is an object that represents actions that are applied to packets are they are swit...
Definition: dpo.h:41
lookup_cast_t lkd_cast
Unicast of rmulticast FIB lookup.
Definition: lookup_dpo.h:92
u16 lkd_locks
Number of locks.
Definition: lookup_dpo.h:97
lookup_dpo_t * lookup_dpo_pool
pool of all MPLS Label DPOs
Definition: lookup_dpo.c:49
dpo_proto_t lkd_proto
The protocol of the FIB for the lookup, and hence the protocol of the packet.
Definition: lookup_dpo.h:77
lookup_input_t_
Switch to use the packet&#39;s source or destination address for lookup.
Definition: lookup_dpo.h:26
enum dpo_proto_t_ dpo_proto_t
Data path protocol.
The identity of a DPO is a combination of its type and its instance number/index of objects of that t...
Definition: dpo.h:166
#define pool_elt_at_index(p, i)
Returns pointer to element at given index.
Definition: pool.h:459
static lookup_dpo_t * lookup_dpo_get(index_t index)
Definition: lookup_dpo.h:121
u8 * format_lookup_dpo(u8 *s, va_list *args)
Definition: lookup_dpo.c:185
void lookup_dpo_add_or_lock_w_table_id(u32 table_id, dpo_proto_t proto, lookup_cast_t cast, lookup_input_t input, lookup_table_t table, dpo_id_t *dpo)
Definition: lookup_dpo.c:153
struct lookup_dpo_t lookup_dpo_t
A representation of an MPLS label for imposition in the data-path.
u32 fib_node_index_t
A typedef of a node index.
Definition: fib_types.h:29
void lookup_dpo_add_or_lock_w_fib_index(fib_node_index_t fib_index, dpo_proto_t proto, lookup_cast_t cast, lookup_input_t input, lookup_table_t table, dpo_id_t *dpo)
Definition: lookup_dpo.c:127
lookup_table_t_
Switch to use the packet&#39;s source or destination address for lookup.
Definition: lookup_dpo.h:39
unsigned int u32
Definition: types.h:88
void lookup_dpo_module_init(void)
Definition: lookup_dpo.c:1404
lookup_table_t lkd_table
Switch to use the table index passed, or the table of the input interface.
Definition: lookup_dpo.h:87
unsigned short u16
Definition: types.h:57
unsigned char u8
Definition: types.h:56
fib_node_index_t lkd_fib_index
The FIB, or interface from which to get a FIB, in which to perform the next lookup;.
Definition: lookup_dpo.h:71