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scsi: target: core: UA on all LUNs after reset

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Allocate UNIT ATTENTION "BUS DEVICE RESET OCCURRED" on all LUNs on all
target ports of the device upon reception of TMF LUN RESET.

This change passes libiscsi test SCSI.MultipathIO.Reset.

Link: https://lore.kernel.org/r/20220913163602.20597-1-d.bogdanov@yadro.com
Signed-off-by: Dmitry Bogdanov <d.bogdanov@yadro.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Dmitry Bogdanov 2022-09-13 19:36:02 +03:00 committed by Martin K. Petersen
parent 3e2deba7aa
commit 6290e23f3b
3 changed files with 21 additions and 2 deletions
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19
drivers/target/target_core_device.c
View File

@ -284,6 +284,25 @@ void target_pr_kref_release(struct kref *kref)
complete(&deve->pr_comp); complete(&deve->pr_comp);
} }
/*
* Establish UA condition on SCSI device - all LUNs
*/
void target_dev_ua_allocate(struct se_device *dev, u8 asc, u8 ascq)
{
struct se_dev_entry *se_deve;
struct se_lun *lun;
spin_lock(&dev->se_port_lock);
list_for_each_entry(lun, &dev->dev_sep_list, lun_dev_link) {
spin_lock(&lun->lun_deve_lock);
list_for_each_entry(se_deve, &lun->lun_deve_list, lun_link)
core_scsi3_ua_allocate(se_deve, asc, ascq);
spin_unlock(&lun->lun_deve_lock);
}
spin_unlock(&dev->se_port_lock);
}
static void static void
target_luns_data_has_changed(struct se_node_acl *nacl, struct se_dev_entry *new, target_luns_data_has_changed(struct se_node_acl *nacl, struct se_dev_entry *new,
bool skip_new) bool skip_new)

1
drivers/target/target_core_internal.h
View File

@ -89,6 +89,7 @@ int target_configure_device(struct se_device *dev);
void target_free_device(struct se_device *); void target_free_device(struct se_device *);
int target_for_each_device(int (*fn)(struct se_device *dev, void *data), int target_for_each_device(int (*fn)(struct se_device *dev, void *data),
void *data); void *data);
void target_dev_ua_allocate(struct se_device *dev, u8 asc, u8 ascq);
/* target_core_configfs.c */ /* target_core_configfs.c */
extern struct configfs_item_operations target_core_dev_item_ops; extern struct configfs_item_operations target_core_dev_item_ops;

3
drivers/target/target_core_transport.c
View File

@ -3531,8 +3531,7 @@ static void target_tmr_work(struct work_struct *work)
tmr->response = (!ret) ? TMR_FUNCTION_COMPLETE : tmr->response = (!ret) ? TMR_FUNCTION_COMPLETE :
TMR_FUNCTION_REJECTED; TMR_FUNCTION_REJECTED;
if (tmr->response == TMR_FUNCTION_COMPLETE) { if (tmr->response == TMR_FUNCTION_COMPLETE) {
target_ua_allocate_lun(cmd->se_sess->se_node_acl, target_dev_ua_allocate(dev, 0x29,
cmd->orig_fe_lun, 0x29,
ASCQ_29H_BUS_DEVICE_RESET_FUNCTION_OCCURRED); ASCQ_29H_BUS_DEVICE_RESET_FUNCTION_OCCURRED);
} }
break; break;