FD.io VPP  v18.04-17-g3a0d853
Vector Packet Processing
hw_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/hw_cmds.hpp"
17 
18 namespace VOM {
19 namespace hw_cmds {
20 
22  : rpc_cmd(item)
23 {
24 }
25 
26 rc_t
28 {
29  msg_t req(con.ctx(), std::ref(*this));
30 
31  VAPI_CALL(req.execute());
32 
33  m_hw_item.set(wait());
34 
35  return (rc_t::OK);
36 }
37 
38 std::string
40 {
41  std::ostringstream s;
42 
43  s << "poll: " << m_hw_item.to_string();
44 
45  return (s.str());
46 }
47 }
48 };
49 
50 /*
51  * fd.io coding-style-patch-verification: ON
52  *
53  * Local Variables:
54  * eval: (c-set-style "mozilla")
55  * End:
56  */
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
poll(HW::item< bool > &item)
Constructor taking the HW::item to update.
Definition: hw_cmds.cpp:21
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
A representation of the connection to VPP.
Definition: connection.hpp:33
A base class for all RPC commands to VPP.
Definition: rpc_cmd.hpp:38
#define VAPI_CALL(_stmt)
Convenince wrapper macro for error handling in VAPI sends.
Definition: types.hpp:29
rc_t issue(connection &con)
Issue the command to VPP/HW.
Definition: hw_cmds.cpp:27
static const rc_t OK
The HW write was successfull.
Definition: types.hpp:112
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
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::Control_ping msg_t
convenient typedef
Definition: rpc_cmd.hpp:44
std::string to_string() const
convert to string format for debug purposes
Definition: hw_cmds.cpp:39
rc_t wait()
Wait on the commands promise.
Definition: rpc_cmd.hpp:89