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-rw-r--r--drivers/scsi/libiscsi.c16
-rw-r--r--include/scsi/iscsi_proto.h30
2 files changed, 30 insertions, 16 deletions
diff --git a/drivers/scsi/libiscsi.c b/drivers/scsi/libiscsi.c
index 57175a7d2ef0..256a999d010b 100644
--- a/drivers/scsi/libiscsi.c
+++ b/drivers/scsi/libiscsi.c
@@ -84,22 +84,6 @@ MODULE_PARM_DESC(debug_libiscsi_eh,
__func__, ##arg); \
} while (0);
-/* Serial Number Arithmetic, 32 bits, less than, RFC1982 */
-#define SNA32_CHECK 2147483648UL
-
-static int iscsi_sna_lt(u32 n1, u32 n2)
-{
- return n1 != n2 && ((n1 < n2 && (n2 - n1 < SNA32_CHECK)) ||
- (n1 > n2 && (n2 - n1 < SNA32_CHECK)));
-}
-
-/* Serial Number Arithmetic, 32 bits, less than, RFC1982 */
-static int iscsi_sna_lte(u32 n1, u32 n2)
-{
- return n1 == n2 || ((n1 < n2 && (n2 - n1 < SNA32_CHECK)) ||
- (n1 > n2 && (n2 - n1 < SNA32_CHECK)));
-}
-
inline void iscsi_conn_queue_work(struct iscsi_conn *conn)
{
struct Scsi_Host *shost = conn->session->host;
diff --git a/include/scsi/iscsi_proto.h b/include/scsi/iscsi_proto.h
index f5f83534fc13..988ba06b3ad6 100644
--- a/include/scsi/iscsi_proto.h
+++ b/include/scsi/iscsi_proto.h
@@ -29,10 +29,40 @@
/* default iSCSI listen port for incoming connections */
#define ISCSI_LISTEN_PORT 3260
+/* iSCSI header length */
+#define ISCSI_HDR_LEN 48
+
+/* iSCSI CRC32C length */
+#define ISCSI_CRC_LEN 4
+
/* Padding word length */
#define ISCSI_PAD_LEN 4
/*
+ * Serial Number Arithmetic, 32 bits, RFC1982
+ */
+
+static inline int iscsi_sna_lt(u32 n1, u32 n2)
+{
+ return (s32)(n1 - n2) < 0;
+}
+
+static inline int iscsi_sna_lte(u32 n1, u32 n2)
+{
+ return (s32)(n1 - n2) <= 0;
+}
+
+static inline int iscsi_sna_gt(u32 n1, u32 n2)
+{
+ return (s32)(n1 - n2) > 0;
+}
+
+static inline int iscsi_sna_gte(u32 n1, u32 n2)
+{
+ return (s32)(n1 - n2) >= 0;
+}
+
+/*
* useful common(control and data pathes) macro
*/
#define ntoh24(p) (((p)[0] << 16) | ((p)[1] << 8) | ((p)[2]))