libpldm: Add APIs to enable PLDM Requester flow
Implement requester APIs outlined at
https://github.com/openbmc/docs/blob/master/designs/pldm-stack.md#Requester.
Sync (send request msg and wait for response) and async (send request
msg and have caller poll an fd) APIs have been implemented. Example apps
that use both flavor of APIs have been implemented as well.
These APIs depend on openbmc/libmctp. For that reason and given the
OpenBMC agnostic nature of libpldm, these APIs must be conditionally
built via a meson feature (requester-api).
Signed-off-by: Deepak Kodihalli <dkodihal@in.ibm.com>
Change-Id: I666a534d8c876638a29074d62c2ed700f33229a8
diff --git a/utilities/requester/set_state_effecter.cpp b/utilities/requester/set_state_effecter.cpp
new file mode 100644
index 0000000..09f5295
--- /dev/null
+++ b/utilities/requester/set_state_effecter.cpp
@@ -0,0 +1,61 @@
+#include <CLI/CLI.hpp>
+#include <array>
+#include <iostream>
+
+#include "libpldm/platform.h"
+#include "libpldm/requester/pldm.h"
+
+int main(int argc, char** argv)
+{
+ CLI::App app{"Send PLDM command SetStateEffecterStates"};
+ uint8_t mctpEid{};
+ app.add_option("-m,--mctp_eid", mctpEid, "MCTP EID")->required();
+ uint16_t effecterId{};
+ app.add_option("-e,--effecter", effecterId, "Effecter Id")->required();
+ uint8_t state{};
+ app.add_option("-s,--state", state, "New state value")->required();
+ CLI11_PARSE(app, argc, argv);
+
+ // Encode PLDM Request message
+ uint8_t effecterCount = 1;
+ std::array<uint8_t, sizeof(pldm_msg_hdr) + sizeof(effecterId) +
+ sizeof(effecterCount) +
+ sizeof(set_effecter_state_field)>
+ requestMsg{};
+ auto request = reinterpret_cast<pldm_msg*>(requestMsg.data());
+ set_effecter_state_field stateField{PLDM_REQUEST_SET, state};
+ auto rc = encode_set_state_effecter_states_req(0, effecterId, effecterCount,
+ &stateField, request);
+ if (rc != PLDM_SUCCESS)
+ {
+ std::cerr << "Message encode failure. PLDM error code = " << std::hex
+ << std::showbase << rc << std::endl;
+ return -1;
+ }
+
+ // Open connection to MCTP socket
+ int fd = pldm_open();
+ if (-1 == fd)
+ {
+ std::cerr << "Failed to init mctp" << std::endl;
+ return -1;
+ }
+
+ uint8_t* responseMsg = nullptr;
+ size_t responseMsgSize{};
+ // Send PLDM request msg and wait for response
+ rc = pldm_send_recv(mctpEid, fd, requestMsg.data(), requestMsg.size(),
+ &responseMsg, &responseMsgSize);
+ if (0 > rc)
+ {
+ std::cerr << "Failed to send message/receive response. RC = " << rc
+ << ", errno = " << errno << std::endl;
+ return -1;
+ }
+ pldm_msg* response = reinterpret_cast<pldm_msg*>(responseMsg);
+ std::cout << "Done. PLDM RC = " << std::hex << std::showbase
+ << static_cast<uint16_t>(response->payload[0]) << std::endl;
+ free(responseMsg);
+
+ return 0;
+}