1 #include <libpldm/base.h>
2 #include <libpldm/platform.h>
3 #include <libpldm/pldm.h>
4 
5 #include <CLI/CLI.hpp>
6 #include <sdeventplus/event.hpp>
7 #include <sdeventplus/source/io.hpp>
8 
9 #include <array>
10 #include <iostream>
11 
12 using namespace sdeventplus;
13 using namespace sdeventplus::source;
14 
15 int main(int argc, char** argv)
16 {
17     CLI::App app{"Send PLDM command SetStateEffecterStates"};
18     uint8_t mctpEid{};
19     app.add_option("-m,--mctp_eid", mctpEid, "MCTP EID")->required();
20     uint16_t effecterId{};
21     app.add_option("-e,--effecter", effecterId, "Effecter Id")->required();
22     uint8_t state{};
23     app.add_option("-s,--state", state, "New state value")->required();
24     CLI11_PARSE(app, argc, argv);
25 
26     // Encode PLDM Request message
27     uint8_t effecterCount = 1;
28     std::array<uint8_t, sizeof(pldm_msg_hdr) + sizeof(effecterId) +
29                             sizeof(effecterCount) +
30                             sizeof(set_effecter_state_field)>
31         requestMsg{};
32     auto request = reinterpret_cast<pldm_msg*>(requestMsg.data());
33     set_effecter_state_field stateField{PLDM_REQUEST_SET, state};
34     auto rc = encode_set_state_effecter_states_req(0, effecterId, effecterCount,
35                                                    &stateField, request);
36     if (rc != PLDM_SUCCESS)
37     {
38         std::cerr << "Message encode failure. PLDM error code = " << std::hex
39                   << std::showbase << rc << "\n";
40         return -1;
41     }
42 
43     // Get fd of MCTP socket
44     int fd = pldm_open();
45     if (-1 == fd)
46     {
47         std::cerr << "Failed to init mctp"
48                   << "\n";
49         return -1;
50     }
51 
52     // Create event loop and add a callback to handle EPOLLIN on fd
53     auto event = Event::get_default();
54     auto callback = [=](IO& io, int fd, uint32_t revents) {
55         if (!(revents & EPOLLIN))
56         {
57             return;
58         }
59 
60         uint8_t* responseMsg = nullptr;
61         size_t responseMsgSize{};
62         auto rc = pldm_recv(mctpEid, fd, request->hdr.instance_id, &responseMsg,
63                             &responseMsgSize);
64         if (!rc)
65         {
66             // We've got the response meant for the PLDM request msg that was
67             // sent out
68             io.set_enabled(Enabled::Off);
69             pldm_msg* response = reinterpret_cast<pldm_msg*>(responseMsg);
70             std::cout << "Done. PLDM RC = " << std::hex << std::showbase
71                       << static_cast<uint16_t>(response->payload[0])
72                       << std::endl;
73             free(responseMsg);
74             exit(EXIT_SUCCESS);
75         }
76     };
77     IO io(event, fd, EPOLLIN, std::move(callback));
78 
79     // Send PLDM Request message - pldm_send doesn't wait for response
80     rc = pldm_send(mctpEid, fd, requestMsg.data(), requestMsg.size());
81     if (0 > rc)
82     {
83         std::cerr << "Failed to send message/receive response. RC = " << rc
84                   << ", errno = " << errno << "\n";
85         return -1;
86     }
87 
88     event.loop();
89 
90     return 0;
91 }
92