1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
|
/*
* Copyright (c) 2017 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 __VOM_L3_ACL_RULE_H__
#define __VOM_L3_ACL_RULE_H__
#include "vom/acl_types.hpp"
#include "vom/prefix.hpp"
#include <vapi/acl.api.vapi.hpp>
namespace VOM {
namespace ACL {
/**
* An ACL rule is the building block of an ACL. An ACL, which is
* the object applied to an interface, is comprised of an ordersed
* sequence of ACL rules.
* This class is a wrapper around the VAPI generated struct and exports
* an API with better types.
*/
class l3_rule
{
public:
/**
* Construct a new object matching the desried state
*/
l3_rule(uint32_t priority,
const action_t& action,
const route::prefix_t& src,
const route::prefix_t& dst);
/**
* Copy Constructor
*/
l3_rule(const l3_rule& o) = default;
/**
* Destructor
*/
~l3_rule() = default;
/**
* convert to string format for debug purposes
*/
std::string to_string() const;
/**
* less-than operator
*/
bool operator<(const l3_rule& rule) const;
/**
* comparison operator (for testing)
*/
bool operator==(const l3_rule& rule) const;
/**
* Convert to VPP API fromat
*/
void to_vpp(vapi_type_acl_rule& rule) const;
/**
* Set Src Ip Address
*/
void set_src_ip(route::prefix_t src);
/**
* Set Dst Ip Address
*/
void set_dst_ip(route::prefix_t dst);
/**
*Set proto
*/
void set_proto(uint8_t proto);
/**
* Set Src port or ICMP Type first
*/
void set_src_from_port(uint16_t srcport_or_icmptype_first);
/**
* Set Src port or ICMP Type last
*/
void set_src_to_port(uint16_t srcport_or_icmptype_last);
/**
* Set Dst port or ICMP code first
*/
void set_dst_from_port(uint16_t dstport_or_icmpcode_first);
/**
* Set Dst port or ICMP code last
*/
void set_dst_to_port(uint16_t dstport_or_icmpcode_last);
/**
* Set TCP flags mask
*/
void set_tcp_flags_mask(uint8_t tcp_flags_mask);
/**
* Set TCP flags value
*/
void set_tcp_flags_value(uint8_t tcp_flags_value);
private:
/**
* Priority. Used to sort the rules in a list in the order
* in which they are applied
*/
uint32_t m_priority;
/**
* Action on match
*/
action_t m_action;
/**
* Source Prefix
*/
route::prefix_t m_src;
/**
* Destination Prefix
*/
route::prefix_t m_dst;
/**
* L4 protocol. IANA number. 1 = ICMP, 58 = ICMPv6, 6 = TCP, 17 =
* UDP.
* 0 => ignore L4 and ignore the ports/tcpflags when matching.
*/
uint8_t m_proto;
/**
* If the L4 protocol is TCP or UDP, the below
* hold ranges of ports, else if the L4 is ICMP/ICMPv6
* they hold ranges of ICMP(v6) types/codes.
*
* Ranges are inclusive, i.e. to match "any" TCP/UDP port,
* use first=0,last=65535. For ICMP(v6),
* use first=0,last=255.
*/
uint16_t m_srcport_or_icmptype_first;
uint16_t m_srcport_or_icmptype_last;
uint16_t m_dstport_or_icmpcode_first;
uint16_t m_dstport_or_icmpcode_last;
/*
* for proto = 6, this matches if the
* TCP flags in the packet, ANDed with tcp_flags_mask,
* is equal to tcp_flags_value.
*/
uint8_t m_tcp_flags_mask;
uint8_t m_tcp_flags_value;
};
};
};
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "mozilla")
* End:
*/
#endif
|
