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Diffstat (limited to 'include/uapi/linux/target_core_user.h')
-rw-r--r--include/uapi/linux/target_core_user.h44
1 files changed, 27 insertions, 17 deletions
diff --git a/include/uapi/linux/target_core_user.h b/include/uapi/linux/target_core_user.h
index b483d1909d3e..b67f99d3c520 100644
--- a/include/uapi/linux/target_core_user.h
+++ b/include/uapi/linux/target_core_user.h
@@ -6,7 +6,7 @@
#include <linux/types.h>
#include <linux/uio.h>
-#define TCMU_VERSION "1.0"
+#define TCMU_VERSION "2.0"
/*
* Ring Design
@@ -39,9 +39,13 @@
* should process the next packet the same way, and so on.
*/
-#define TCMU_MAILBOX_VERSION 1
+#define TCMU_MAILBOX_VERSION 2
#define ALIGN_SIZE 64 /* Should be enough for most CPUs */
+/* See https://gcc.gnu.org/onlinedocs/cpp/Stringification.html */
+#define xstr(s) str(s)
+#define str(s) #s
+
struct tcmu_mailbox {
__u16 version;
__u16 flags;
@@ -64,31 +68,36 @@ enum tcmu_opcode {
* Only a few opcodes, and length is 8-byte aligned, so use low bits for opcode.
*/
struct tcmu_cmd_entry_hdr {
- __u32 len_op;
+ __u32 len_op;
+ __u16 cmd_id;
+ __u8 kflags;
+#define TCMU_UFLAG_UNKNOWN_OP 0x1
+ __u8 uflags;
+
} __packed;
#define TCMU_OP_MASK 0x7
-static inline enum tcmu_opcode tcmu_hdr_get_op(struct tcmu_cmd_entry_hdr *hdr)
+static inline enum tcmu_opcode tcmu_hdr_get_op(__u32 len_op)
{
- return hdr->len_op & TCMU_OP_MASK;
+ return len_op & TCMU_OP_MASK;
}
-static inline void tcmu_hdr_set_op(struct tcmu_cmd_entry_hdr *hdr, enum tcmu_opcode op)
+static inline void tcmu_hdr_set_op(__u32 *len_op, enum tcmu_opcode op)
{
- hdr->len_op &= ~TCMU_OP_MASK;
- hdr->len_op |= (op & TCMU_OP_MASK);
+ *len_op &= ~TCMU_OP_MASK;
+ *len_op |= (op & TCMU_OP_MASK);
}
-static inline __u32 tcmu_hdr_get_len(struct tcmu_cmd_entry_hdr *hdr)
+static inline __u32 tcmu_hdr_get_len(__u32 len_op)
{
- return hdr->len_op & ~TCMU_OP_MASK;
+ return len_op & ~TCMU_OP_MASK;
}
-static inline void tcmu_hdr_set_len(struct tcmu_cmd_entry_hdr *hdr, __u32 len)
+static inline void tcmu_hdr_set_len(__u32 *len_op, __u32 len)
{
- hdr->len_op &= TCMU_OP_MASK;
- hdr->len_op |= len;
+ *len_op &= TCMU_OP_MASK;
+ *len_op |= len;
}
/* Currently the same as SCSI_SENSE_BUFFERSIZE */
@@ -97,13 +106,14 @@ static inline void tcmu_hdr_set_len(struct tcmu_cmd_entry_hdr *hdr, __u32 len)
struct tcmu_cmd_entry {
struct tcmu_cmd_entry_hdr hdr;
- uint16_t cmd_id;
- uint16_t __pad1;
-
union {
struct {
+ uint32_t iov_cnt;
+ uint32_t iov_bidi_cnt;
+ uint32_t iov_dif_cnt;
uint64_t cdb_off;
- uint64_t iov_cnt;
+ uint64_t __pad1;
+ uint64_t __pad2;
struct iovec iov[0];
} req;
struct {