FD.io VPP  v18.04-17-g3a0d853
Vector Packet Processing
dhcp_config_cmds.cpp
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1 /*
2  * Copyright (c) 2017 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 #include "vom/dhcp_config_cmds.hpp"
17 
19 
20 namespace VOM {
21 namespace dhcp_config_cmds {
22 
24  const handle_t& itf,
25  const std::string& hostname,
26  const l2_address_t& client_id,
27  bool set_broadcast_flag)
28  : rpc_cmd(item)
29  , m_itf(itf)
30  , m_hostname(hostname)
31  , m_client_id(client_id)
32  , m_set_broadcast_flag(set_broadcast_flag)
33 {
34 }
35 
36 bool
37 bind_cmd::operator==(const bind_cmd& other) const
38 {
39  return ((m_itf == other.m_itf) && (m_hostname == other.m_hostname));
40 }
41 
42 rc_t
44 {
45  msg_t req(con.ctx(), std::ref(*this));
46 
47  auto& payload = req.get_request().get_payload();
48  payload.sw_if_index = m_itf.value();
49  payload.is_add = 1;
50  payload.pid = getpid();
51  payload.want_dhcp_event = 1;
52  payload.set_broadcast_flag = m_set_broadcast_flag;
53 
54  memset(payload.hostname, 0, sizeof(payload.hostname));
55  memcpy(payload.hostname, m_hostname.c_str(),
56  std::min(sizeof(payload.hostname), m_hostname.length()));
57 
58  memset(payload.client_id, 0, sizeof(payload.client_id));
59  payload.client_id[0] = 1;
60  std::copy_n(begin(m_client_id.bytes),
61  std::min(sizeof(payload.client_id), m_client_id.bytes.size()),
62  payload.client_id + 1);
63 
64  VAPI_CALL(req.execute());
65 
66  m_hw_item.set(wait());
67 
68  return rc_t::OK;
69 }
70 
71 std::string
73 {
74  std::ostringstream s;
75  s << "Dhcp-config-bind: " << m_hw_item.to_string()
76  << " itf:" << m_itf.to_string() << " hostname:" << m_hostname;
77 
78  return (s.str());
79 }
80 
82  const handle_t& itf,
83  const std::string& hostname)
84  : rpc_cmd(item)
85  , m_itf(itf)
86  , m_hostname(hostname)
87 {
88 }
89 
90 bool
92 {
93  return ((m_itf == other.m_itf) && (m_hostname == other.m_hostname));
94 }
95 
96 rc_t
98 {
99  msg_t req(con.ctx(), std::ref(*this));
100 
101  auto& payload = req.get_request().get_payload();
102  payload.sw_if_index = m_itf.value();
103  payload.is_add = 0;
104  payload.pid = getpid();
105  payload.want_dhcp_event = 0;
106 
107  memcpy(payload.hostname, m_hostname.c_str(),
108  std::min(sizeof(payload.hostname), m_hostname.length()));
109 
110  VAPI_CALL(req.execute());
111 
112  wait();
114 
115  return rc_t::OK;
116 }
117 
118 std::string
120 {
121  std::ostringstream s;
122  s << "Dhcp-config-unbind: " << m_hw_item.to_string()
123  << " itf:" << m_itf.to_string() << " hostname:" << m_hostname;
124 
125  return (s.str());
126 }
127 
129  : event_cmd(el.status())
130  , m_listener(el)
131 {
132 }
133 
134 bool
136 {
137  return (true);
138 }
139 
140 rc_t
142 {
143  /*
144  * Set the call back to handle DHCP complete envets.
145  */
146  m_reg.reset(new reg_t(con.ctx(), std::ref(*this)));
147 
148  /*
149  * return in-progress so the command stays in the pending list.
150  */
151  return (rc_t::OK);
152 }
153 
154 void
156 {
157 }
158 
159 void
161 {
162  m_listener.handle_dhcp_event(this);
163 }
164 
165 std::string
167 {
168  return ("dhcp-events");
169 }
170 }
171 };
172 /*
173  * fd.io coding-style-patch-verification: ON
174  *
175  * Local Variables:
176  * eval: (c-set-style "mozilla")
177  * End:
178  */
static const rc_t NOOP
The HW write/update action was/has not been attempted.
Definition: types.hpp:107
HW::item< bool > & m_hw_item
A reference to an object&#39;s HW::item that the command will update.
Definition: rpc_cmd.hpp:135
unbind_cmd(HW::item< bool > &item, const handle_t &itf, const std::string &hostname)
Constructor.
A command class that binds the DHCP config to the interface.
uint32_t value() const
get the value of the handle
Definition: types.cpp:96
virtual void handle_dhcp_event(dhcp_config_cmds::events_cmd *cmd)=0
listener&#39;s virtual function invoked when a DHCP event is available to read
rc_t issue(connection &con)
Issue the command to VPP/HW.
Error codes that VPP will return during a HW write.
Definition: types.hpp:90
std::string to_string() const
convert to string format for debug purposes
Definition: hw.hpp:160
Type def of a L2 address as read from VPP.
Definition: types.hpp:342
events_cmd(dhcp_config::event_listener &el)
Constructor.
std::string to_string() const
convert to string format for debug purposes
Definition: types.cpp:72
std::string to_string() const
convert to string format for debug purposes
A cmd class that Unbinds Dhcp Config from an interface.
A representation of the connection to VPP.
Definition: connection.hpp:33
rc_t issue(connection &con)
Issue the command to VPP/HW.
std::string to_string() const
convert to string format for debug purposes
HW::item< bool > & item()
return the HW item the command updates
Definition: rpc_cmd.hpp:64
void notify()
called in the VAPI RX thread when data is available.
A base class for all RPC commands to VPP.
Definition: rpc_cmd.hpp:38
bool operator==(const events_cmd &i) const
Comparison operator - only used for UT.
void retire(connection &con)
Retire the command - unsubscribe.
std::vector< uint8_t > bytes
Underlying bytes array - filled from least to most significant.
Definition: types.hpp:386
#define VAPI_CALL(_stmt)
Convenince wrapper macro for error handling in VAPI sends.
Definition: types.hpp:29
A functor class represents our desire to recieve interface events.
std::unique_ptr< vapi::Event_registration< vapi::Dhcp_compl_event > > m_reg
The VAPI event registration.
Definition: event_cmd.hpp:100
A type declaration of an interface handle in VPP.
Definition: types.hpp:236
vapi::Event_registration< vapi::Dhcp_compl_event > reg_t
Definition: event_cmd.hpp:59
static const rc_t OK
The HW write was successfull.
Definition: types.hpp:112
bind_cmd(HW::item< bool > &item, const handle_t &itf, const std::string &hostname, const l2_address_t &client_id, bool set_braodcast_flag=false)
Constructor.
vapi::Connection & ctx()
Retrun the VAPI context the commands will use.
Definition: connection.cpp:49
The VPP Object Model (VOM) library.
Definition: acl_binding.cpp:19
bool operator==(const bind_cmd &i) const
Comparison operator - only used for UT.
void set(const rc_t &rc)
Set the HW return code - should only be called from the family of Command objects.
Definition: hw.hpp:124
vapi::Dhcp_client_config msg_t
convenient typedef
Definition: rpc_cmd.hpp:44
An Event command base class.
Definition: event_cmd.hpp:39
std::string to_string() const
convert to string format for debug purposes
rc_t issue(connection &con)
Issue the command to VPP/HW - subscribe to DHCP events.
A class that listens to DHCP Events.
Definition: dhcp_config.hpp:99
DEFINE_VAPI_MSG_IDS_DHCP_API_JSON
bool operator==(const unbind_cmd &i) const
Comparison operator - only used for UT.