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-rw-r--r--include/linux/bsg.h10
1 files changed, 10 insertions, 0 deletions
diff --git a/include/linux/bsg.h b/include/linux/bsg.h
index cf0303a60611..ecb4730d0868 100644
--- a/include/linux/bsg.h
+++ b/include/linux/bsg.h
@@ -1,12 +1,22 @@
#ifndef BSG_H
#define BSG_H
+#include <linux/types.h>
+
#define BSG_PROTOCOL_SCSI 0
#define BSG_SUB_PROTOCOL_SCSI_CMD 0
#define BSG_SUB_PROTOCOL_SCSI_TMF 1
#define BSG_SUB_PROTOCOL_SCSI_TRANSPORT 2
+/*
+ * For flags member below
+ * sg.h sg_io_hdr also has bits defined for it's flags member. However
+ * none of these bits are implemented/used by bsg. The bits below are
+ * allocated to not conflict with sg.h ones anyway.
+ */
+#define BSG_FLAG_Q_AT_TAIL 0x10 /* default, == 0 at this bit, is Q_AT_HEAD */
+
struct sg_io_v4 {
__s32 guard; /* [i] 'Q' to differentiate from v3 */
__u32 protocol; /* [i] 0 -> SCSI , .... */