Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next

Pull networking updates from David Millar:
 "Here are some highlights from the 2065 networking commits that
  happened this development cycle:

   1) XDP support for IXGBE (John Fastabend) and thunderx (Sunil Kowuri)

   2) Add a generic XDP driver, so that anyone can test XDP even if they
      lack a networking device whose driver has explicit XDP support
      (me).

   3) Sparc64 now has an eBPF JIT too (me)

   4) Add a BPF program testing framework via BPF_PROG_TEST_RUN (Alexei
      Starovoitov)

   5) Make netfitler network namespace teardown less expensive (Florian
      Westphal)

   6) Add symmetric hashing support to nft_hash (Laura Garcia Liebana)

   7) Implement NAPI and GRO in netvsc driver (Stephen Hemminger)

   8) Support TC flower offload statistics in mlxsw (Arkadi Sharshevsky)

   9) Multiqueue support in stmmac driver (Joao Pinto)

  10) Remove TCP timewait recycling, it never really could possibly work
      well in the real world and timestamp randomization really zaps any
      hint of usability this feature had (Soheil Hassas Yeganeh)

  11) Support level3 vs level4 ECMP route hashing in ipv4 (Nikolay
      Aleksandrov)

  12) Add socket busy poll support to epoll (Sridhar Samudrala)

  13) Netlink extended ACK support (Johannes Berg, Pablo Neira Ayuso,
      and several others)

  14) IPSEC hw offload infrastructure (Steffen Klassert)"

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (2065 commits)
  tipc: refactor function tipc_sk_recv_stream()
  tipc: refactor function tipc_sk_recvmsg()
  net: thunderx: Optimize page recycling for XDP
  net: thunderx: Support for XDP header adjustment
  net: thunderx: Add support for XDP_TX
  net: thunderx: Add support for XDP_DROP
  net: thunderx: Add basic XDP support
  net: thunderx: Cleanup receive buffer allocation
  net: thunderx: Optimize CQE_TX handling
  net: thunderx: Optimize RBDR descriptor handling
  net: thunderx: Support for page recycling
  ipx: call ipxitf_put() in ioctl error path
  net: sched: add helpers to handle extended actions
  qed*: Fix issues in the ptp filter config implementation.
  qede: Fix concurrency issue in PTP Tx path processing.
  stmmac: Add support for SIMATIC IOT2000 platform
  net: hns: fix ethtool_get_strings overflow in hns driver
  tcp: fix wraparound issue in tcp_lp
  bpf, arm64: fix jit branch offset related to ldimm64
  bpf, arm64: implement jiting of BPF_XADD
  ...

1 files changed, 89 insertions, 152 deletions

diff --git a/include/linux/qed/iscsi_common.h b/include/linux/qed/iscsi_common.h
index 4c5747babcf6..69949f8e354b 100644
--- a/include/linux/qed/iscsi_common.h
+++ b/include/linux/qed/iscsi_common.h
@@ -39,17 +39,9 @@
 /* iSCSI HSI constants */
 #define ISCSI_DEFAULT_MTU       (1500)
 
-/* Current iSCSI HSI version number composed of two fields (16 bit) */
-#define ISCSI_HSI_MAJOR_VERSION (0)
-#define ISCSI_HSI_MINOR_VERSION (0)
-
 /* KWQ (kernel work queue) layer codes */
 #define ISCSI_SLOW_PATH_LAYER_CODE   (6)
 
-/* CQE completion status */
-#define ISCSI_EQE_COMPLETION_SUCCESS (0x0)
-#define ISCSI_EQE_RST_CONN_RCVD (0x1)
-
 /* iSCSI parameter defaults */
 #define ISCSI_DEFAULT_HEADER_DIGEST         (0)
 #define ISCSI_DEFAULT_DATA_DIGEST           (0)
@@ -68,6 +60,10 @@
 #define ISCSI_MIN_VAL_MAX_OUTSTANDING_R2T   (1)
 #define ISCSI_MAX_VAL_MAX_OUTSTANDING_R2T   (0xff)
 
+#define ISCSI_AHS_CNTL_SIZE 4
+
+#define ISCSI_WQE_NUM_SGES_SLOWIO           (0xf)
+
 /* iSCSI reserved params */
 #define ISCSI_ITT_ALL_ONES	(0xffffffff)
 #define ISCSI_TTT_ALL_ONES	(0xffffffff)
@@ -173,19 +169,6 @@ struct iscsi_async_msg_hdr {
 	__le32 reserved7;
 };
 
-struct iscsi_sge {
-	struct regpair sge_addr;
-	__le16 sge_len;
-	__le16 reserved0;
-	__le32 reserved1;
-};
-
-struct iscsi_cached_sge_ctx {
-	struct iscsi_sge sge;
-	struct regpair reserved;
-	__le32 dsgl_curr_offset[2];
-};
-
 struct iscsi_cmd_hdr {
 	__le16 reserved1;
 	u8 flags_attr;
@@ -229,8 +212,13 @@ struct iscsi_common_hdr {
 #define ISCSI_COMMON_HDR_DATA_SEG_LEN_SHIFT  0
 #define ISCSI_COMMON_HDR_TOTAL_AHS_LEN_MASK  0xFF
 #define ISCSI_COMMON_HDR_TOTAL_AHS_LEN_SHIFT 24
-	__le32 lun_reserved[4];
-	__le32 data[6];
+	struct regpair lun_reserved;
+	__le32 itt;
+	__le32 ttt;
+	__le32 cmdstat_sn;
+	__le32 exp_statcmd_sn;
+	__le32 max_cmd_sn;
+	__le32 data[3];
 };
 
 struct iscsi_conn_offload_params {
@@ -246,8 +234,10 @@ struct iscsi_conn_offload_params {
 #define ISCSI_CONN_OFFLOAD_PARAMS_TCP_ON_CHIP_1B_SHIFT 0
 #define ISCSI_CONN_OFFLOAD_PARAMS_TARGET_MODE_MASK     0x1
 #define ISCSI_CONN_OFFLOAD_PARAMS_TARGET_MODE_SHIFT    1
-#define ISCSI_CONN_OFFLOAD_PARAMS_RESERVED1_MASK       0x3F
-#define ISCSI_CONN_OFFLOAD_PARAMS_RESERVED1_SHIFT      2
+#define ISCSI_CONN_OFFLOAD_PARAMS_RESTRICTED_MODE_MASK	0x1
+#define ISCSI_CONN_OFFLOAD_PARAMS_RESTRICTED_MODE_SHIFT	2
+#define ISCSI_CONN_OFFLOAD_PARAMS_RESERVED1_MASK	0x1F
+#define ISCSI_CONN_OFFLOAD_PARAMS_RESERVED1_SHIFT	3
 	u8 pbl_page_size_log;
 	u8 pbe_page_size_log;
 	u8 default_cq;
@@ -278,8 +268,12 @@ struct iscsi_conn_update_ramrod_params {
 #define ISCSI_CONN_UPDATE_RAMROD_PARAMS_INITIAL_R2T_SHIFT    2
 #define ISCSI_CONN_UPDATE_RAMROD_PARAMS_IMMEDIATE_DATA_MASK  0x1
 #define ISCSI_CONN_UPDATE_RAMROD_PARAMS_IMMEDIATE_DATA_SHIFT 3
-#define ISCSI_CONN_UPDATE_RAMROD_PARAMS_RESERVED1_MASK       0xF
-#define ISCSI_CONN_UPDATE_RAMROD_PARAMS_RESERVED1_SHIFT      4
+#define ISCSI_CONN_UPDATE_RAMROD_PARAMS_DIF_BLOCK_SIZE_MASK  0x1
+#define ISCSI_CONN_UPDATE_RAMROD_PARAMS_DIF_BLOCK_SIZE_SHIFT 4
+#define ISCSI_CONN_UPDATE_RAMROD_PARAMS_DIF_ON_HOST_EN_MASK  0x1
+#define ISCSI_CONN_UPDATE_RAMROD_PARAMS_DIF_ON_HOST_EN_SHIFT 5
+#define ISCSI_CONN_UPDATE_RAMROD_PARAMS_RESERVED1_MASK       0x3
+#define ISCSI_CONN_UPDATE_RAMROD_PARAMS_RESERVED1_SHIFT      6
 	u8 reserved0[3];
 	__le32 max_seq_size;
 	__le32 max_send_pdu_length;
@@ -312,7 +306,7 @@ struct iscsi_ext_cdb_cmd_hdr {
 	__le32 expected_transfer_length;
 	__le32 cmd_sn;
 	__le32 exp_stat_sn;
-	struct iscsi_sge cdb_sge;
+	struct scsi_sge cdb_sge;
 };
 
 struct iscsi_login_req_hdr {
@@ -519,8 +513,8 @@ struct iscsi_logout_response_hdr {
 	__le32 exp_cmd_sn;
 	__le32 max_cmd_sn;
 	__le32 reserved4;
-	__le16 time2retain;
-	__le16 time2wait;
+	__le16 time_2_retain;
+	__le16 time_2_wait;
 	__le32 reserved5[1];
 };
 
@@ -602,7 +596,7 @@ struct iscsi_tmf_response_hdr {
 #define ISCSI_TMF_RESPONSE_HDR_TOTAL_AHS_LEN_SHIFT 24
 	struct regpair reserved0;
 	__le32 itt;
-	__le32 rtt;
+	__le32 reserved1;
 	__le32 stat_sn;
 	__le32 exp_cmd_sn;
 	__le32 max_cmd_sn;
@@ -641,7 +635,7 @@ struct iscsi_reject_hdr {
 #define ISCSI_REJECT_HDR_TOTAL_AHS_LEN_MASK  0xFF
 #define ISCSI_REJECT_HDR_TOTAL_AHS_LEN_SHIFT 24
 	struct regpair reserved0;
-	__le32 reserved1;
+	__le32 all_ones;
 	__le32 reserved2;
 	__le32 stat_sn;
 	__le32 exp_cmd_sn;
@@ -688,7 +682,9 @@ struct iscsi_cqe_solicited {
 	__le16 itid;
 	u8 task_type;
 	u8 fw_dbg_field;
-	__le32 reserved1[2];
+	u8 caused_conn_err;
+	u8 reserved0[3];
+	__le32 reserved1[1];
 	union iscsi_task_hdr iscsi_hdr;
 };
 
@@ -727,35 +723,6 @@ enum iscsi_cqe_unsolicited_type {
 	MAX_ISCSI_CQE_UNSOLICITED_TYPE
 };
 
-struct iscsi_virt_sgl_ctx {
-	struct regpair sgl_base;
-	struct regpair dsgl_base;
-	__le32 sgl_initial_offset;
-	__le32 dsgl_initial_offset;
-	__le32 dsgl_curr_offset[2];
-};
-
-struct iscsi_sgl_var_params {
-	u8 sgl_ptr;
-	u8 dsgl_ptr;
-	__le16 sge_offset;
-	__le16 dsge_offset;
-};
-
-struct iscsi_phys_sgl_ctx {
-	struct regpair sgl_base;
-	struct regpair dsgl_base;
-	u8 sgl_size;
-	u8 dsgl_size;
-	__le16 reserved;
-	struct iscsi_sgl_var_params var_params[2];
-};
-
-union iscsi_data_desc_ctx {
-	struct iscsi_virt_sgl_ctx virt_sgl;
-	struct iscsi_phys_sgl_ctx phys_sgl;
-	struct iscsi_cached_sge_ctx cached_sge;
-};
 
 struct iscsi_debug_modes {
 	u8 flags;
@@ -771,8 +738,10 @@ struct iscsi_debug_modes {
 #define ISCSI_DEBUG_MODES_ASSERT_IF_RECV_REJECT_OR_ASYNC_SHIFT 4
 #define ISCSI_DEBUG_MODES_ASSERT_IF_RECV_NOP_MASK              0x1
 #define ISCSI_DEBUG_MODES_ASSERT_IF_RECV_NOP_SHIFT             5
-#define ISCSI_DEBUG_MODES_RESERVED0_MASK                       0x3
-#define ISCSI_DEBUG_MODES_RESERVED0_SHIFT                      6
+#define ISCSI_DEBUG_MODES_ASSERT_IF_DATA_DIGEST_ERROR_MASK     0x1
+#define ISCSI_DEBUG_MODES_ASSERT_IF_DATA_DIGEST_ERROR_SHIFT    6
+#define ISCSI_DEBUG_MODES_ASSERT_IF_DIF_ERROR_MASK             0x1
+#define ISCSI_DEBUG_MODES_ASSERT_IF_DIF_ERROR_SHIFT            7
 };
 
 struct iscsi_dif_flags {
@@ -806,7 +775,6 @@ enum iscsi_eqe_opcode {
 	ISCSI_EVENT_TYPE_ASYN_FIN_WAIT2,
 	ISCSI_EVENT_TYPE_ISCSI_CONN_ERROR,
 	ISCSI_EVENT_TYPE_TCP_CONN_ERROR,
-	ISCSI_EVENT_TYPE_ASYN_DELETE_OOO_ISLES,
 	MAX_ISCSI_EQE_OPCODE
 };
 
@@ -856,31 +824,11 @@ enum iscsi_error_types {
 	ISCSI_CONN_ERROR_PROTOCOL_ERR_DIF_TX,
 	ISCSI_CONN_ERROR_SENSE_DATA_LENGTH,
 	ISCSI_CONN_ERROR_DATA_PLACEMENT_ERROR,
+	ISCSI_CONN_ERROR_INVALID_ITT,
 	ISCSI_ERROR_UNKNOWN,
 	MAX_ISCSI_ERROR_TYPES
 };
 
-struct iscsi_mflags {
-	u8 mflags;
-#define ISCSI_MFLAGS_SLOW_IO_MASK     0x1
-#define ISCSI_MFLAGS_SLOW_IO_SHIFT    0
-#define ISCSI_MFLAGS_SINGLE_SGE_MASK  0x1
-#define ISCSI_MFLAGS_SINGLE_SGE_SHIFT 1
-#define ISCSI_MFLAGS_RESERVED_MASK    0x3F
-#define ISCSI_MFLAGS_RESERVED_SHIFT   2
-};
-
-struct iscsi_sgl {
-	struct regpair sgl_addr;
-	__le16 updated_sge_size;
-	__le16 updated_sge_offset;
-	__le32 byte_offset;
-};
-
-union iscsi_mstorm_sgl {
-	struct iscsi_sgl sgl_struct;
-	struct iscsi_sge single_sge;
-};
 
 enum iscsi_ramrod_cmd_id {
 	ISCSI_RAMROD_CMD_ID_UNUSED = 0,
@@ -896,10 +844,10 @@ enum iscsi_ramrod_cmd_id {
 
 struct iscsi_reg1 {
 	__le32 reg1_map;
-#define ISCSI_REG1_NUM_FAST_SGES_MASK  0x7
-#define ISCSI_REG1_NUM_FAST_SGES_SHIFT 0
-#define ISCSI_REG1_RESERVED1_MASK      0x1FFFFFFF
-#define ISCSI_REG1_RESERVED1_SHIFT     3
+#define ISCSI_REG1_NUM_SGES_MASK   0xF
+#define ISCSI_REG1_NUM_SGES_SHIFT  0
+#define ISCSI_REG1_RESERVED1_MASK  0xFFFFFFF
+#define ISCSI_REG1_RESERVED1_SHIFT 4
 };
 
 union iscsi_seq_num {
@@ -967,22 +915,33 @@ struct iscsi_spe_func_init {
 };
 
 struct ystorm_iscsi_task_state {
-	union iscsi_data_desc_ctx sgl_ctx_union;
-	__le32 buffer_offset[2];
-	__le16 bytes_nxt_dif;
-	__le16 rxmit_bytes_nxt_dif;
-	union iscsi_seq_num seq_num_union;
-	u8 dif_bytes_leftover;
-	u8 rxmit_dif_bytes_leftover;
-	__le16 reuse_count;
-	struct iscsi_dif_flags dif_flags;
-	u8 local_comp;
+	struct scsi_cached_sges data_desc;
+	struct scsi_sgl_params sgl_params;
 	__le32 exp_r2t_sn;
-	__le32 sgl_offset[2];
+	__le32 buffer_offset;
+	union iscsi_seq_num seq_num;
+	struct iscsi_dif_flags dif_flags;
+	u8 flags;
+#define YSTORM_ISCSI_TASK_STATE_LOCAL_COMP_MASK  0x1
+#define YSTORM_ISCSI_TASK_STATE_LOCAL_COMP_SHIFT 0
+#define YSTORM_ISCSI_TASK_STATE_SLOW_IO_MASK     0x1
+#define YSTORM_ISCSI_TASK_STATE_SLOW_IO_SHIFT    1
+#define YSTORM_ISCSI_TASK_STATE_RESERVED0_MASK   0x3F
+#define YSTORM_ISCSI_TASK_STATE_RESERVED0_SHIFT  2
+};
+
+struct ystorm_iscsi_task_rxmit_opt {
+	__le32 fast_rxmit_sge_offset;
+	__le32 scan_start_buffer_offset;
+	__le32 fast_rxmit_buffer_offset;
+	u8 scan_start_sgl_index;
+	u8 fast_rxmit_sgl_index;
+	__le16 reserved;
 };
 
 struct ystorm_iscsi_task_st_ctx {
 	struct ystorm_iscsi_task_state state;
+	struct ystorm_iscsi_task_rxmit_opt rxmit_opt;
 	union iscsi_task_hdr pdu_hdr;
 };
 
@@ -1152,25 +1111,16 @@ struct ustorm_iscsi_task_ag_ctx {
 };
 
 struct mstorm_iscsi_task_st_ctx {
-	union iscsi_mstorm_sgl sgl_union;
-	struct iscsi_dif_flags dif_flags;
-	struct iscsi_mflags flags;
-	u8 sgl_size;
-	u8 host_sge_index;
-	__le16 dix_cur_sge_offset;
-	__le16 dix_cur_sge_size;
-	__le32 data_offset_rtid;
-	u8 dif_offset;
-	u8 dix_sgl_size;
-	u8 dix_sge_index;
+	struct scsi_cached_sges data_desc;
+	struct scsi_sgl_params sgl_params;
+	__le32 rem_task_size;
+	__le32 data_buffer_offset;
 	u8 task_type;
+	struct iscsi_dif_flags dif_flags;
+	u8 reserved0[2];
 	struct regpair sense_db;
-	struct regpair dix_sgl_cur_sge;
-	__le32 rem_task_size;
-	__le16 reuse_count;
-	__le16 dif_data_residue;
-	u8 reserved0[4];
-	__le32 reserved1[1];
+	__le32 expected_itt;
+	__le32 reserved1;
 };
 
 struct ustorm_iscsi_task_st_ctx {
@@ -1184,7 +1134,7 @@ struct ustorm_iscsi_task_st_ctx {
 #define USTORM_ISCSI_TASK_ST_CTX_AHS_EXIST_SHIFT            0
 #define USTORM_ISCSI_TASK_ST_CTX_RESERVED1_MASK             0x7F
 #define USTORM_ISCSI_TASK_ST_CTX_RESERVED1_SHIFT            1
-	u8 reserved2;
+	struct iscsi_dif_flags dif_flags;
 	__le16 reserved3;
 	__le32 reserved4;
 	__le32 reserved5;
@@ -1207,10 +1157,10 @@ struct ustorm_iscsi_task_st_ctx {
 #define USTORM_ISCSI_TASK_ST_CTX_LOCAL_COMP_SHIFT           2
 #define USTORM_ISCSI_TASK_ST_CTX_Q0_R2TQE_WRITE_MASK        0x1
 #define USTORM_ISCSI_TASK_ST_CTX_Q0_R2TQE_WRITE_SHIFT       3
-#define USTORM_ISCSI_TASK_ST_CTX_TOTALDATAACKED_DONE_MASK   0x1
-#define USTORM_ISCSI_TASK_ST_CTX_TOTALDATAACKED_DONE_SHIFT  4
-#define USTORM_ISCSI_TASK_ST_CTX_HQSCANNED_DONE_MASK        0x1
-#define USTORM_ISCSI_TASK_ST_CTX_HQSCANNED_DONE_SHIFT       5
+#define USTORM_ISCSI_TASK_ST_CTX_TOTAL_DATA_ACKED_DONE_MASK  0x1
+#define USTORM_ISCSI_TASK_ST_CTX_TOTAL_DATA_ACKED_DONE_SHIFT 4
+#define USTORM_ISCSI_TASK_ST_CTX_HQ_SCANNED_DONE_MASK        0x1
+#define USTORM_ISCSI_TASK_ST_CTX_HQ_SCANNED_DONE_SHIFT       5
 #define USTORM_ISCSI_TASK_ST_CTX_R2T2RECV_DONE_MASK         0x1
 #define USTORM_ISCSI_TASK_ST_CTX_R2T2RECV_DONE_SHIFT        6
 #define USTORM_ISCSI_TASK_ST_CTX_RESERVED0_MASK             0x1
@@ -1220,7 +1170,6 @@ struct ustorm_iscsi_task_st_ctx {
 
 struct iscsi_task_context {
 	struct ystorm_iscsi_task_st_ctx ystorm_st_context;
-	struct regpair ystorm_st_padding[2];
 	struct ystorm_iscsi_task_ag_ctx ystorm_ag_context;
 	struct regpair ystorm_ag_padding[2];
 	struct tdif_task_context tdif_context;
@@ -1272,32 +1221,22 @@ struct iscsi_uhqe {
 #define ISCSI_UHQE_TASK_ID_LO_SHIFT         24
 };
 
-struct iscsi_wqe_field {
-	__le32 contlen_cdbsize_field;
-#define ISCSI_WQE_FIELD_CONT_LEN_MASK  0xFFFFFF
-#define ISCSI_WQE_FIELD_CONT_LEN_SHIFT 0
-#define ISCSI_WQE_FIELD_CDB_SIZE_MASK  0xFF
-#define ISCSI_WQE_FIELD_CDB_SIZE_SHIFT 24
-};
-
-union iscsi_wqe_field_union {
-	struct iscsi_wqe_field cont_field;
-	__le32 prev_tid;
-};
 
 struct iscsi_wqe {
 	__le16 task_id;
 	u8 flags;
 #define ISCSI_WQE_WQE_TYPE_MASK        0x7
 #define ISCSI_WQE_WQE_TYPE_SHIFT       0
-#define ISCSI_WQE_NUM_FAST_SGES_MASK   0x7
-#define ISCSI_WQE_NUM_FAST_SGES_SHIFT  3
-#define ISCSI_WQE_PTU_INVALIDATE_MASK  0x1
-#define ISCSI_WQE_PTU_INVALIDATE_SHIFT 6
+#define ISCSI_WQE_NUM_SGES_MASK  0xF
+#define ISCSI_WQE_NUM_SGES_SHIFT 3
 #define ISCSI_WQE_RESPONSE_MASK        0x1
 #define ISCSI_WQE_RESPONSE_SHIFT       7
 	struct iscsi_dif_flags prot_flags;
-	union iscsi_wqe_field_union cont_prevtid_union;
+	__le32 contlen_cdbsize;
+#define ISCSI_WQE_CONT_LEN_MASK  0xFFFFFF
+#define ISCSI_WQE_CONT_LEN_SHIFT 0
+#define ISCSI_WQE_CDB_SIZE_MASK  0xFF
+#define ISCSI_WQE_CDB_SIZE_SHIFT 24
 };
 
 enum iscsi_wqe_type {
@@ -1318,17 +1257,15 @@ struct iscsi_xhqe {
 	u8 total_ahs_length;
 	u8 opcode;
 	u8 flags;
-#define ISCSI_XHQE_NUM_FAST_SGES_MASK  0x7
-#define ISCSI_XHQE_NUM_FAST_SGES_SHIFT 0
-#define ISCSI_XHQE_FINAL_MASK          0x1
-#define ISCSI_XHQE_FINAL_SHIFT         3
-#define ISCSI_XHQE_SUPER_IO_MASK       0x1
-#define ISCSI_XHQE_SUPER_IO_SHIFT      4
-#define ISCSI_XHQE_STATUS_BIT_MASK     0x1
-#define ISCSI_XHQE_STATUS_BIT_SHIFT    5
-#define ISCSI_XHQE_RESERVED_MASK       0x3
-#define ISCSI_XHQE_RESERVED_SHIFT      6
-	union iscsi_seq_num seq_num_union;
+#define ISCSI_XHQE_FINAL_MASK       0x1
+#define ISCSI_XHQE_FINAL_SHIFT      0
+#define ISCSI_XHQE_STATUS_BIT_MASK  0x1
+#define ISCSI_XHQE_STATUS_BIT_SHIFT 1
+#define ISCSI_XHQE_NUM_SGES_MASK    0xF
+#define ISCSI_XHQE_NUM_SGES_SHIFT   2
+#define ISCSI_XHQE_RESERVED0_MASK   0x3
+#define ISCSI_XHQE_RESERVED0_SHIFT  6
+	union iscsi_seq_num seq_num;
 	__le16 reserved1;
 };