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scsi: add persistent reserve in command with read full status support

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Change-Id: I9093397ec674de55473e61af1c54009bf60878aa
Signed-off-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/436096
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
This commit is contained in:
Changpeng Liu 2019-05-14 01:48:28 -04:00 committed by Jim Harris
parent c25e9b2437
commit 94e9f0ab8b
1 changed files with 50 additions and 0 deletions
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50
lib/scsi/scsi_pr.c
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@ -641,6 +641,53 @@ spdk_scsi_pr_in_report_capabilities(struct spdk_scsi_task *task,
return sizeof(*param);
}
static int
spdk_scsi_pr_in_read_full_status(struct spdk_scsi_task *task,
uint8_t *data, uint16_t data_len)
{
struct spdk_scsi_lun *lun = task->lun;
struct spdk_scsi_pr_in_full_status_data *param;
struct spdk_scsi_pr_in_full_status_desc *desc;
struct spdk_scsi_pr_registrant *reg, *tmp;
bool all_regs = false;
uint32_t add_len = 0;
SPDK_DEBUGLOG(SPDK_LOG_SCSI, "PR IN READ FULL STATUS\n");
all_regs = spdk_scsi_pr_is_all_registrants_type(lun);
param = (struct spdk_scsi_pr_in_full_status_data *)data;
to_be32(&param->header.pr_generation, lun->pr_generation);
TAILQ_FOREACH_SAFE(reg, &lun->reg_head, link, tmp) {
desc = (struct spdk_scsi_pr_in_full_status_desc *)
((uint8_t *)param->desc_list + add_len);
if (add_len + sizeof(*desc) + sizeof(param->header) > data_len) {
break;
}
add_len += sizeof(*desc);
desc->rkey = reg->rkey;
if (all_regs || lun->reservation.holder == reg) {
desc->r_holder = true;
desc->type = lun->reservation.rtype;
} else {
desc->r_holder = false;
desc->type = 0;
}
desc->all_tg_pt = 0;
desc->scope = SPDK_SCSI_PR_LU_SCOPE;
desc->relative_target_port_id = reg->relative_target_port_id;
if (add_len + reg->transport_id_len + sizeof(param->header) > data_len) {
break;
}
add_len += reg->transport_id_len;
memcpy(&desc->transport_id, reg->transport_id, reg->transport_id_len);
to_be32(&desc->desc_len, reg->transport_id_len);
}
to_be32(&param->header.additional_len, add_len);
return (sizeof(param->header) + add_len);
}
int
spdk_scsi_pr_in(struct spdk_scsi_task *task,
uint8_t *cdb, uint8_t *data,
@ -667,6 +714,9 @@ spdk_scsi_pr_in(struct spdk_scsi_task *task,
case SPDK_SCSI_PR_IN_REPORT_CAPABILITIES:
rc = spdk_scsi_pr_in_report_capabilities(task, data, data_len);
break;
case SPDK_SCSI_PR_IN_READ_FULL_STATUS:
rc = spdk_scsi_pr_in_read_full_status(task, data, data_len);
break;
default:
goto invalid;
}