f94fd098f6
Check for XCOPY header, CSCD descriptor and segment descriptor list truncation, and respond accordingly. SPC4r37 6.4.1 EXTENDED COPY(LID4) states (also applying to LID1 reqs): If the parameter list length causes truncation of the parameter list, then the copy manager shall transfer no data and shall terminate the EXTENDED COPY command with CHECK CONDITION status, with the sense key set to ILLEGAL REQUEST, and the additional sense code set to PARAMETER LIST LENGTH ERROR. This behaviour can be tested using the libiscsi ExtendedCopy.ParamHdr test. Signed-off-by: David Disseldorp <ddiss@suse.de> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
71 lines
1.9 KiB
C
71 lines
1.9 KiB
C
#include <target/target_core_base.h>
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#define XCOPY_HDR_LEN 16
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#define XCOPY_TARGET_DESC_LEN 32
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#define XCOPY_SEGMENT_DESC_LEN 28
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#define XCOPY_NAA_IEEE_REGEX_LEN 16
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#define XCOPY_MAX_SECTORS 1024
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/*
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* SPC4r37 6.4.6.1
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* Table 150 — CSCD descriptor ID values
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*/
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#define XCOPY_CSCD_DESC_ID_LIST_OFF_MAX 0x07FF
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enum xcopy_origin_list {
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XCOL_SOURCE_RECV_OP = 0x01,
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XCOL_DEST_RECV_OP = 0x02,
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};
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struct xcopy_pt_cmd;
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struct xcopy_op {
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int op_origin;
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struct se_cmd *xop_se_cmd;
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struct se_device *src_dev;
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unsigned char src_tid_wwn[XCOPY_NAA_IEEE_REGEX_LEN];
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struct se_device *dst_dev;
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unsigned char dst_tid_wwn[XCOPY_NAA_IEEE_REGEX_LEN];
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unsigned char local_dev_wwn[XCOPY_NAA_IEEE_REGEX_LEN];
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sector_t src_lba;
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sector_t dst_lba;
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unsigned short stdi;
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unsigned short dtdi;
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unsigned short nolb;
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unsigned int dbl;
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struct xcopy_pt_cmd *src_pt_cmd;
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struct xcopy_pt_cmd *dst_pt_cmd;
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u32 xop_data_nents;
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struct scatterlist *xop_data_sg;
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struct work_struct xop_work;
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};
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/*
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* Receive Copy Results Sevice Actions
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*/
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#define RCR_SA_COPY_STATUS 0x00
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#define RCR_SA_RECEIVE_DATA 0x01
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#define RCR_SA_OPERATING_PARAMETERS 0x03
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#define RCR_SA_FAILED_SEGMENT_DETAILS 0x04
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/*
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* Receive Copy Results defs for Operating Parameters
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*/
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#define RCR_OP_MAX_TARGET_DESC_COUNT 0x2
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#define RCR_OP_MAX_SG_DESC_COUNT 0x1
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#define RCR_OP_MAX_DESC_LIST_LEN 1024
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#define RCR_OP_MAX_SEGMENT_LEN 268435456 /* 256 MB */
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#define RCR_OP_TOTAL_CONCURR_COPIES 0x1 /* Must be <= 16384 */
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#define RCR_OP_MAX_CONCURR_COPIES 0x1 /* Must be <= 255 */
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#define RCR_OP_DATA_SEG_GRAN_LOG2 9 /* 512 bytes in log 2 */
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#define RCR_OP_INLINE_DATA_GRAN_LOG2 9 /* 512 bytes in log 2 */
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#define RCR_OP_HELD_DATA_GRAN_LOG2 9 /* 512 bytes in log 2 */
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extern int target_xcopy_setup_pt(void);
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extern void target_xcopy_release_pt(void);
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extern sense_reason_t target_do_xcopy(struct se_cmd *);
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extern sense_reason_t target_do_receive_copy_results(struct se_cmd *);
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