-typedef enum cksum_types {
- OBD_CKSUM_CRC32 = 0x00000001,
- OBD_CKSUM_ADLER = 0x00000002,
- OBD_CKSUM_CRC32C= 0x00000004,
-} cksum_type_t;
+enum cksum_types {
+ OBD_CKSUM_CRC32 = 0x00000001,
+ OBD_CKSUM_ADLER = 0x00000002,
+ OBD_CKSUM_CRC32C = 0x00000004,
+ OBD_CKSUM_RESERVED = 0x00000008,
+ OBD_CKSUM_T10IP512 = 0x00000010,
+ OBD_CKSUM_T10IP4K = 0x00000020,
+ OBD_CKSUM_T10CRC512 = 0x00000040,
+ OBD_CKSUM_T10CRC4K = 0x00000080,
+};
+
+#define OBD_CKSUM_T10_ALL (OBD_CKSUM_T10IP512 | OBD_CKSUM_T10IP4K | \
+ OBD_CKSUM_T10CRC512 | OBD_CKSUM_T10CRC4K)
+
+#define OBD_CKSUM_ALL (OBD_CKSUM_CRC32 | OBD_CKSUM_ADLER | OBD_CKSUM_CRC32C | \
+ OBD_CKSUM_T10_ALL)
+
+/*
+ * The default checksum algorithm used on top of T10PI GRD tags for RPC.
+ * Considering that the checksum-of-checksums is only computing CRC32 on a
+ * 4KB chunk of GRD tags for a 1MB RPC for 512B sectors, or 16KB of GRD
+ * tags for 16MB of 4KB sectors, this is only 1/256 or 1/1024 of the
+ * total data being checksummed, so the checksum type used here should not
+ * affect overall system performance noticeably.
+ */
+#define OBD_CKSUM_T10_TOP OBD_CKSUM_ADLER