process: add IPMI error return mechanism and update errors

The IPMI packet validation code must return specific IPMI errors
corresponding to what error has occurred instead of the invalid command
error.

Update all IPMI handler pieces to return more specific errors.

Change-Id: I8d21e92015d84cc0880e3b83991aed7288e19eab
Signed-off-by: Patrick Venture <venture@google.com>

1 files changed, 24 insertions, 7 deletions

diff --git a/test/process_unittest.cpp b/test/process_unittest.cpp
index 63e6f5e..4f8c9a6 100644
--- a/test/process_unittest.cpp
+++ b/test/process_unittest.cpp
@@ -57,8 +57,11 @@ TEST(ValidateBlobCommandTest, InvalidCommandReturnsFailure)
 
     request[0] = 0xff;         // There is no command 0xff.
     dataLen = sizeof(uint8_t); // There is no payload for CRC.
+    ipmi_ret_t rc;
 
-    EXPECT_EQ(nullptr, validateBlobCommand(&crc, request, reply, &dataLen));
+    EXPECT_EQ(nullptr,
+              validateBlobCommand(&crc, request, reply, &dataLen, &rc));
+    EXPECT_EQ(IPMI_CC_INVALID_FIELD_REQUEST, rc);
 }
 
 TEST(ValidateBlobCommandTest, ValidCommandWithoutPayload)
@@ -72,8 +75,10 @@ TEST(ValidateBlobCommandTest, ValidCommandWithoutPayload)
 
     request[0] = BlobOEMCommands::bmcBlobGetCount;
     dataLen = sizeof(uint8_t); // There is no payload for CRC.
+    ipmi_ret_t rc;
 
-    IpmiBlobHandler res = validateBlobCommand(&crc, request, reply, &dataLen);
+    IpmiBlobHandler res =
+        validateBlobCommand(&crc, request, reply, &dataLen, &rc);
     EXPECT_FALSE(res == nullptr);
     EqualFunctions(getBlobCount, res);
 }
@@ -91,8 +96,11 @@ TEST(ValidateBlobCommandTest, WithPayloadMinimumLengthIs3VerifyChecks)
     request[0] = BlobOEMCommands::bmcBlobGetCount;
     dataLen = sizeof(uint8_t) + sizeof(uint16_t);
     // There is a payload, but there are insufficient bytes.
+    ipmi_ret_t rc;
 
-    EXPECT_EQ(nullptr, validateBlobCommand(&crc, request, reply, &dataLen));
+    EXPECT_EQ(nullptr,
+              validateBlobCommand(&crc, request, reply, &dataLen, &rc));
+    EXPECT_EQ(IPMI_CC_REQ_DATA_LEN_INVALID, rc);
 }
 
 TEST(ValidateBlobCommandTest, WithPayloadAndInvalidCrc)
@@ -125,7 +133,11 @@ TEST(ValidateBlobCommandTest, WithPayloadAndInvalidCrc)
         }));
     EXPECT_CALL(crc, get()).WillOnce(Return(0x1234));
 
-    EXPECT_EQ(nullptr, validateBlobCommand(&crc, request, reply, &dataLen));
+    ipmi_ret_t rc;
+
+    EXPECT_EQ(nullptr,
+              validateBlobCommand(&crc, request, reply, &dataLen, &rc));
+    EXPECT_EQ(IPMI_CC_UNSPECIFIED_ERROR, rc);
 }
 
 TEST(ValidateBlobCommandTest, WithPayloadAndValidCrc)
@@ -158,7 +170,10 @@ TEST(ValidateBlobCommandTest, WithPayloadAndValidCrc)
         }));
     EXPECT_CALL(crc, get()).WillOnce(Return(0x3412));
 
-    IpmiBlobHandler res = validateBlobCommand(&crc, request, reply, &dataLen);
+    ipmi_ret_t rc;
+
+    IpmiBlobHandler res =
+        validateBlobCommand(&crc, request, reply, &dataLen, &rc);
     EXPECT_FALSE(res == nullptr);
     EqualFunctions(writeBlob, res);
 }
@@ -181,8 +196,10 @@ TEST(ValidateBlobCommandTest, InputIntegrationTest)
     uint8_t reply[MAX_IPMI_BUFFER] = {0};
 
     dataLen = sizeof(request);
+    ipmi_ret_t rc;
 
-    IpmiBlobHandler res = validateBlobCommand(&crc, request, reply, &dataLen);
+    IpmiBlobHandler res =
+        validateBlobCommand(&crc, request, reply, &dataLen, &rc);
     EXPECT_FALSE(res == nullptr);
     EqualFunctions(openBlob, res);
 }
@@ -250,7 +267,7 @@ TEST(ProcessBlobCommandTest, CommandReturnsOkWithInvalidPayloadLength)
 
     dataLen = sizeof(request);
 
-    EXPECT_EQ(IPMI_CC_INVALID,
+    EXPECT_EQ(IPMI_CC_UNSPECIFIED_ERROR,
               processBlobCommand(h, &manager, &crc, request, reply, &dataLen));
 }