93 lines · c
1/* SPDX-License-Identifier: GPL-2.0 */2#ifndef ISCSI_SEQ_AND_PDU_LIST_H3#define ISCSI_SEQ_AND_PDU_LIST_H4 5#include <linux/types.h>6#include <linux/cache.h>7 8/* struct iscsi_pdu->status */9#define DATAOUT_PDU_SENT 110 11/* struct iscsi_seq->type */12#define SEQTYPE_IMMEDIATE 113#define SEQTYPE_UNSOLICITED 214#define SEQTYPE_NORMAL 315 16/* struct iscsi_seq->status */17#define DATAOUT_SEQUENCE_GOT_R2T 118#define DATAOUT_SEQUENCE_WITHIN_COMMAND_RECOVERY 219#define DATAOUT_SEQUENCE_COMPLETE 320 21/* iscsi_determine_counts_for_list() type */22#define PDULIST_NORMAL 123#define PDULIST_IMMEDIATE 224#define PDULIST_UNSOLICITED 325#define PDULIST_IMMEDIATE_AND_UNSOLICITED 426 27/* struct iscsi_pdu->type */28#define PDUTYPE_IMMEDIATE 129#define PDUTYPE_UNSOLICITED 230#define PDUTYPE_NORMAL 331 32/* struct iscsi_pdu->status */33#define ISCSI_PDU_NOT_RECEIVED 034#define ISCSI_PDU_RECEIVED_OK 135#define ISCSI_PDU_CRC_FAILED 236#define ISCSI_PDU_TIMED_OUT 337 38/* struct iscsi_build_list->randomize */39#define RANDOM_DATAIN_PDU_OFFSETS 0x0140#define RANDOM_DATAIN_SEQ_OFFSETS 0x0241#define RANDOM_DATAOUT_PDU_OFFSETS 0x0442#define RANDOM_R2T_OFFSETS 0x0843 44/* struct iscsi_build_list->data_direction */45#define ISCSI_PDU_READ 0x0146#define ISCSI_PDU_WRITE 0x0247 48struct iscsi_build_list {49 int data_direction;50 int randomize;51 int type;52 int immediate_data_length;53};54 55struct iscsi_pdu {56 int status;57 int type;58 u8 flags;59 u32 data_sn;60 u32 length;61 u32 offset;62 u32 pdu_send_order;63 u32 seq_no;64} ____cacheline_aligned;65 66struct iscsi_seq {67 int sent;68 int status;69 int type;70 u32 data_sn;71 u32 first_datasn;72 u32 last_datasn;73 u32 next_burst_len;74 u32 pdu_start;75 u32 pdu_count;76 u32 offset;77 u32 orig_offset;78 u32 pdu_send_order;79 u32 r2t_sn;80 u32 seq_send_order;81 u32 seq_no;82 u32 xfer_len;83} ____cacheline_aligned;84 85struct iscsit_cmd;86 87extern int iscsit_build_pdu_and_seq_lists(struct iscsit_cmd *, u32);88extern struct iscsi_pdu *iscsit_get_pdu_holder(struct iscsit_cmd *, u32, u32);89extern struct iscsi_pdu *iscsit_get_pdu_holder_for_seq(struct iscsit_cmd *, struct iscsi_seq *);90extern struct iscsi_seq *iscsit_get_seq_holder(struct iscsit_cmd *, u32, u32);91 92#endif /* ISCSI_SEQ_AND_PDU_LIST_H */93