libpldm : Add decode API for QueryDeviceIdentifiers cmd
QueryDeviceIdentifiers command is used by update agent to obtain the
firmware identifiers for the firmware device and its defined in DSP0267
Version 1.1.0 sec:10.1.
Tested: Unit tests passed
Signed-off-by: gokulsanker <gokul.sanker.v.g@intel.com>
Change-Id: I9ef81ce75aaedaae2fff9f5632ce16aa952cda17
diff --git a/libpldm/firmware_update.c b/libpldm/firmware_update.c
index 25b2997..031ec85 100644
--- a/libpldm/firmware_update.c
+++ b/libpldm/firmware_update.c
@@ -1,4 +1,5 @@
#include "firmware_update.h"
+#include <endian.h>
int encode_query_device_identifiers_req(uint8_t instance_id,
size_t payload_length,
@@ -15,3 +16,51 @@
return encode_pldm_header_only(PLDM_REQUEST, instance_id, PLDM_FWUP,
PLDM_QUERY_DEVICE_IDENTIFIERS, msg);
}
+
+int decode_query_device_identifiers_resp(const struct pldm_msg *msg,
+ size_t payload_length,
+ uint8_t *completion_code,
+ uint32_t *device_identifiers_len,
+ uint8_t *descriptor_count,
+ uint8_t **descriptor_data)
+{
+ if (msg == NULL || completion_code == NULL ||
+ device_identifiers_len == NULL || descriptor_count == NULL ||
+ descriptor_data == NULL) {
+ return PLDM_ERROR_INVALID_DATA;
+ }
+
+ *completion_code = msg->payload[0];
+ if (PLDM_SUCCESS != *completion_code) {
+ return PLDM_SUCCESS;
+ }
+
+ if (payload_length <
+ sizeof(struct pldm_query_device_identifiers_resp)) {
+ return PLDM_ERROR_INVALID_LENGTH;
+ }
+
+ struct pldm_query_device_identifiers_resp *response =
+ (struct pldm_query_device_identifiers_resp *)msg->payload;
+ *device_identifiers_len = le32toh(response->device_identifiers_len);
+
+ if (*device_identifiers_len < PLDM_FWUP_DEVICE_DESCRIPTOR_MIN_LEN) {
+ return PLDM_ERROR_INVALID_LENGTH;
+ }
+
+ if (payload_length !=
+ sizeof(struct pldm_query_device_identifiers_resp) +
+ *device_identifiers_len) {
+ return PLDM_ERROR_INVALID_LENGTH;
+ }
+ *descriptor_count = response->descriptor_count;
+
+ if (*descriptor_count == 0) {
+ return PLDM_ERROR_INVALID_DATA;
+ }
+
+ *descriptor_data =
+ (uint8_t *)(msg->payload +
+ sizeof(struct pldm_query_device_identifiers_resp));
+ return PLDM_SUCCESS;
+}