target: Subsume se_port + t10_alua_tg_pt_gp_member into se_lun
This patch eliminates all se_port + t10_alua_tg_pt_gp_member usage,
and converts current users to direct se_lun pointer dereference.
This includes the removal of core_export_port(), core_release_port()
core_dev_export() and core_dev_unexport(). Along with conversion
of special case se_lun pointer dereference within PR ALL_TG_PT=1
and ALUA access state transition UNIT_ATTENTION handling.
Also, update core_enable_device_list_for_node() to reference the
new per se_lun->lun_deve_list when creating a new entry, or
replacing an existing one via RCU.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
diff --git a/drivers/target/target_core_stat.c b/drivers/target/target_core_stat.c
index ea12879..8e080ef 100644
--- a/drivers/target/target_core_stat.c
+++ b/drivers/target/target_core_stat.c
@@ -106,7 +106,7 @@
struct se_device *dev =
container_of(sgrps, struct se_device, dev_stat_grps);
- return snprintf(page, PAGE_SIZE, "%u\n", dev->dev_port_count);
+ return snprintf(page, PAGE_SIZE, "%u\n", dev->export_count);
}
DEV_STAT_SCSI_DEV_ATTR_RO(ports);
@@ -542,19 +542,13 @@
struct se_port_stat_grps *pgrps, char *page)
{
struct se_lun *lun = container_of(pgrps, struct se_lun, port_stat_grps);
- struct se_port *sep;
- struct se_device *dev = lun->lun_se_dev;
- struct se_hba *hba;
- ssize_t ret;
+ struct se_device *dev;
+ ssize_t ret = -ENODEV;
spin_lock(&lun->lun_sep_lock);
- sep = lun->lun_sep;
- if (!sep) {
- spin_unlock(&lun->lun_sep_lock);
- return -ENODEV;
- }
- hba = dev->se_hba;
- ret = snprintf(page, PAGE_SIZE, "%u\n", hba->hba_index);
+ dev = lun->lun_se_dev;
+ if (dev)
+ ret = snprintf(page, PAGE_SIZE, "%u\n", dev->se_hba->hba_index);
spin_unlock(&lun->lun_sep_lock);
return ret;
}
@@ -564,17 +558,13 @@
struct se_port_stat_grps *pgrps, char *page)
{
struct se_lun *lun = container_of(pgrps, struct se_lun, port_stat_grps);
- struct se_port *sep;
- struct se_device *dev = lun->lun_se_dev;
- ssize_t ret;
+ struct se_device *dev;
+ ssize_t ret = -ENODEV;
spin_lock(&lun->lun_sep_lock);
- sep = lun->lun_sep;
- if (!sep) {
- spin_unlock(&lun->lun_sep_lock);
- return -ENODEV;
- }
- ret = snprintf(page, PAGE_SIZE, "%u\n", dev->dev_index);
+ dev = lun->lun_se_dev;
+ if (dev)
+ ret = snprintf(page, PAGE_SIZE, "%u\n", dev->dev_index);
spin_unlock(&lun->lun_sep_lock);
return ret;
}
@@ -584,16 +574,13 @@
struct se_port_stat_grps *pgrps, char *page)
{
struct se_lun *lun = container_of(pgrps, struct se_lun, port_stat_grps);
- struct se_port *sep;
- ssize_t ret;
+ struct se_device *dev;
+ ssize_t ret = -ENODEV;
spin_lock(&lun->lun_sep_lock);
- sep = lun->lun_sep;
- if (!sep) {
- spin_unlock(&lun->lun_sep_lock);
- return -ENODEV;
- }
- ret = snprintf(page, PAGE_SIZE, "%u\n", sep->sep_index);
+ dev = lun->lun_se_dev;
+ if (dev)
+ ret = snprintf(page, PAGE_SIZE, "%u\n", lun->lun_rtpi);
spin_unlock(&lun->lun_sep_lock);
return ret;
}
@@ -603,20 +590,13 @@
struct se_port_stat_grps *pgrps, char *page)
{
struct se_lun *lun = container_of(pgrps, struct se_lun, port_stat_grps);
- struct se_device *dev = lun->lun_se_dev;
- struct se_port *sep;
- ssize_t ret;
-
- if (!dev)
- return -ENODEV;
+ struct se_device *dev;
+ ssize_t ret = -ENODEV;
spin_lock(&lun->lun_sep_lock);
- sep = lun->lun_sep;
- if (!sep) {
- spin_unlock(&lun->lun_sep_lock);
- return -ENODEV;
- }
- ret = snprintf(page, PAGE_SIZE, "%s%u\n", "Device", dev->dev_index);
+ dev = lun->lun_se_dev;
+ if (dev)
+ ret = snprintf(page, PAGE_SIZE, "%s%u\n", "Device", dev->dev_index);
spin_unlock(&lun->lun_sep_lock);
return ret;
}
@@ -626,17 +606,15 @@
struct se_port_stat_grps *pgrps, char *page)
{
struct se_lun *lun = container_of(pgrps, struct se_lun, port_stat_grps);
- struct se_port *sep;
- ssize_t ret;
+ struct se_device *dev;
+ ssize_t ret = -ENODEV;
spin_lock(&lun->lun_sep_lock);
- sep = lun->lun_sep;
- if (!sep) {
- spin_unlock(&lun->lun_sep_lock);
- return -ENODEV;
+ dev = lun->lun_se_dev;
+ if (dev) {
+ /* FIXME: scsiPortBusyStatuses */
+ ret = snprintf(page, PAGE_SIZE, "%u\n", 0);
}
- /* FIXME: scsiPortBusyStatuses */
- ret = snprintf(page, PAGE_SIZE, "%u\n", 0);
spin_unlock(&lun->lun_sep_lock);
return ret;
}
@@ -685,19 +663,13 @@
struct se_port_stat_grps *pgrps, char *page)
{
struct se_lun *lun = container_of(pgrps, struct se_lun, port_stat_grps);
- struct se_device *dev = lun->lun_se_dev;
- struct se_port *sep;
- struct se_hba *hba;
- ssize_t ret;
+ struct se_device *dev;
+ ssize_t ret = -ENODEV;
spin_lock(&lun->lun_sep_lock);
- sep = lun->lun_sep;
- if (!sep) {
- spin_unlock(&lun->lun_sep_lock);
- return -ENODEV;
- }
- hba = dev->se_hba;
- ret = snprintf(page, PAGE_SIZE, "%u\n", hba->hba_index);
+ dev = lun->lun_se_dev;
+ if (dev)
+ ret = snprintf(page, PAGE_SIZE, "%u\n", dev->se_hba->hba_index);
spin_unlock(&lun->lun_sep_lock);
return ret;
}
@@ -707,17 +679,13 @@
struct se_port_stat_grps *pgrps, char *page)
{
struct se_lun *lun = container_of(pgrps, struct se_lun, port_stat_grps);
- struct se_device *dev = lun->lun_se_dev;
- struct se_port *sep;
- ssize_t ret;
+ struct se_device *dev;
+ ssize_t ret = -ENODEV;
spin_lock(&lun->lun_sep_lock);
- sep = lun->lun_sep;
- if (!sep) {
- spin_unlock(&lun->lun_sep_lock);
- return -ENODEV;
- }
- ret = snprintf(page, PAGE_SIZE, "%u\n", dev->dev_index);
+ dev = lun->lun_se_dev;
+ if (dev)
+ ret = snprintf(page, PAGE_SIZE, "%u\n", dev->dev_index);
spin_unlock(&lun->lun_sep_lock);
return ret;
}
@@ -727,16 +695,13 @@
struct se_port_stat_grps *pgrps, char *page)
{
struct se_lun *lun = container_of(pgrps, struct se_lun, port_stat_grps);
- struct se_port *sep;
- ssize_t ret;
+ struct se_device *dev;
+ ssize_t ret = -ENODEV;
spin_lock(&lun->lun_sep_lock);
- sep = lun->lun_sep;
- if (!sep) {
- spin_unlock(&lun->lun_sep_lock);
- return -ENODEV;
- }
- ret = snprintf(page, PAGE_SIZE, "%u\n", sep->sep_index);
+ dev = lun->lun_se_dev;
+ if (dev)
+ ret = snprintf(page, PAGE_SIZE, "%u\n", lun->lun_rtpi);
spin_unlock(&lun->lun_sep_lock);
return ret;
}
@@ -746,20 +711,16 @@
struct se_port_stat_grps *pgrps, char *page)
{
struct se_lun *lun = container_of(pgrps, struct se_lun, port_stat_grps);
- struct se_port *sep;
- struct se_portal_group *tpg;
- ssize_t ret;
+ struct se_portal_group *tpg = lun->lun_tpg;
+ struct se_device *dev;
+ ssize_t ret = -ENODEV;
spin_lock(&lun->lun_sep_lock);
- sep = lun->lun_sep;
- if (!sep) {
- spin_unlock(&lun->lun_sep_lock);
- return -ENODEV;
- }
- tpg = sep->sep_tpg;
-
- ret = snprintf(page, PAGE_SIZE, "%sPort#%u\n",
- tpg->se_tpg_tfo->get_fabric_name(), sep->sep_index);
+ dev = lun->lun_se_dev;
+ if (dev)
+ ret = snprintf(page, PAGE_SIZE, "%sPort#%u\n",
+ tpg->se_tpg_tfo->get_fabric_name(),
+ lun->lun_rtpi);
spin_unlock(&lun->lun_sep_lock);
return ret;
}
@@ -769,21 +730,16 @@
struct se_port_stat_grps *pgrps, char *page)
{
struct se_lun *lun = container_of(pgrps, struct se_lun, port_stat_grps);
- struct se_port *sep;
- struct se_portal_group *tpg;
- ssize_t ret;
+ struct se_portal_group *tpg = lun->lun_tpg;
+ struct se_device *dev;
+ ssize_t ret = -ENODEV;
spin_lock(&lun->lun_sep_lock);
- sep = lun->lun_sep;
- if (!sep) {
- spin_unlock(&lun->lun_sep_lock);
- return -ENODEV;
- }
- tpg = sep->sep_tpg;
-
- ret = snprintf(page, PAGE_SIZE, "%s%s%d\n",
- tpg->se_tpg_tfo->tpg_get_wwn(tpg), "+t+",
- tpg->se_tpg_tfo->tpg_get_tag(tpg));
+ dev = lun->lun_se_dev;
+ if (dev)
+ ret = snprintf(page, PAGE_SIZE, "%s%s%d\n",
+ tpg->se_tpg_tfo->tpg_get_wwn(tpg), "+t+",
+ tpg->se_tpg_tfo->tpg_get_tag(tpg));
spin_unlock(&lun->lun_sep_lock);
return ret;
}
@@ -793,17 +749,13 @@
struct se_port_stat_grps *pgrps, char *page)
{
struct se_lun *lun = container_of(pgrps, struct se_lun, port_stat_grps);
- struct se_port *sep;
- ssize_t ret;
+ struct se_device *dev;
+ ssize_t ret = -ENODEV;
spin_lock(&lun->lun_sep_lock);
- sep = lun->lun_sep;
- if (!sep) {
- spin_unlock(&lun->lun_sep_lock);
- return -ENODEV;
- }
-
- ret = snprintf(page, PAGE_SIZE, "%llu\n", sep->sep_stats.cmd_pdus);
+ dev = lun->lun_se_dev;
+ if (dev)
+ ret = snprintf(page, PAGE_SIZE, "%u\n", lun->lun_stats.cmd_pdus);
spin_unlock(&lun->lun_sep_lock);
return ret;
}
@@ -813,18 +765,14 @@
struct se_port_stat_grps *pgrps, char *page)
{
struct se_lun *lun = container_of(pgrps, struct se_lun, port_stat_grps);
- struct se_port *sep;
- ssize_t ret;
+ struct se_device *dev;
+ ssize_t ret = -ENODEV;
spin_lock(&lun->lun_sep_lock);
- sep = lun->lun_sep;
- if (!sep) {
- spin_unlock(&lun->lun_sep_lock);
- return -ENODEV;
- }
-
- ret = snprintf(page, PAGE_SIZE, "%u\n",
- (u32)(sep->sep_stats.rx_data_octets >> 20));
+ dev = lun->lun_se_dev;
+ if (dev)
+ ret = snprintf(page, PAGE_SIZE, "%u\n",
+ (u32)(lun->lun_stats.rx_data_octets >> 20));
spin_unlock(&lun->lun_sep_lock);
return ret;
}
@@ -834,18 +782,14 @@
struct se_port_stat_grps *pgrps, char *page)
{
struct se_lun *lun = container_of(pgrps, struct se_lun, port_stat_grps);
- struct se_port *sep;
- ssize_t ret;
+ struct se_device *dev;
+ ssize_t ret = -ENODEV;
spin_lock(&lun->lun_sep_lock);
- sep = lun->lun_sep;
- if (!sep) {
- spin_unlock(&lun->lun_sep_lock);
- return -ENODEV;
- }
-
- ret = snprintf(page, PAGE_SIZE, "%u\n",
- (u32)(sep->sep_stats.tx_data_octets >> 20));
+ dev = lun->lun_se_dev;
+ if (dev)
+ ret = snprintf(page, PAGE_SIZE, "%u\n",
+ (u32)(lun->lun_stats.tx_data_octets >> 20));
spin_unlock(&lun->lun_sep_lock);
return ret;
}
@@ -855,18 +799,15 @@
struct se_port_stat_grps *pgrps, char *page)
{
struct se_lun *lun = container_of(pgrps, struct se_lun, port_stat_grps);
- struct se_port *sep;
- ssize_t ret;
+ struct se_device *dev;
+ ssize_t ret = -ENODEV;
spin_lock(&lun->lun_sep_lock);
- sep = lun->lun_sep;
- if (!sep) {
- spin_unlock(&lun->lun_sep_lock);
- return -ENODEV;
+ dev = lun->lun_se_dev;
+ if (dev) {
+ /* FIXME: scsiTgtPortHsInCommands */
+ ret = snprintf(page, PAGE_SIZE, "%u\n", 0);
}
-
- /* FIXME: scsiTgtPortHsInCommands */
- ret = snprintf(page, PAGE_SIZE, "%u\n", 0);
spin_unlock(&lun->lun_sep_lock);
return ret;
}
@@ -921,20 +862,13 @@
struct se_port_stat_grps *pgrps, char *page)
{
struct se_lun *lun = container_of(pgrps, struct se_lun, port_stat_grps);
- struct se_device *dev = lun->lun_se_dev;
- struct se_port *sep;
- struct se_hba *hba;
- ssize_t ret;
+ struct se_device *dev;
+ ssize_t ret = -ENODEV;
spin_lock(&lun->lun_sep_lock);
- sep = lun->lun_sep;
- if (!sep) {
- spin_unlock(&lun->lun_sep_lock);
- return -ENODEV;
- }
-
- hba = dev->se_hba;
- ret = snprintf(page, PAGE_SIZE, "%u\n", hba->hba_index);
+ dev = lun->lun_se_dev;
+ if (dev)
+ ret = snprintf(page, PAGE_SIZE, "%u\n", dev->se_hba->hba_index);
spin_unlock(&lun->lun_sep_lock);
return ret;
}
@@ -944,20 +878,17 @@
struct se_port_stat_grps *pgrps, char *page)
{
struct se_lun *lun = container_of(pgrps, struct se_lun, port_stat_grps);
- struct se_port *sep;
- struct se_portal_group *tpg;
- ssize_t ret;
+ struct se_device *dev;
+ struct se_portal_group *tpg = lun->lun_tpg;
+ ssize_t ret = -ENODEV;
spin_lock(&lun->lun_sep_lock);
- sep = lun->lun_sep;
- if (!sep) {
- spin_unlock(&lun->lun_sep_lock);
- return -ENODEV;
+ dev = lun->lun_se_dev;
+ if (dev) {
+ /* scsiTransportType */
+ ret = snprintf(page, PAGE_SIZE, "scsiTransport%s\n",
+ tpg->se_tpg_tfo->get_fabric_name());
}
- tpg = sep->sep_tpg;
- /* scsiTransportType */
- ret = snprintf(page, PAGE_SIZE, "scsiTransport%s\n",
- tpg->se_tpg_tfo->get_fabric_name());
spin_unlock(&lun->lun_sep_lock);
return ret;
}
@@ -967,19 +898,15 @@
struct se_port_stat_grps *pgrps, char *page)
{
struct se_lun *lun = container_of(pgrps, struct se_lun, port_stat_grps);
- struct se_port *sep;
- struct se_portal_group *tpg;
- ssize_t ret;
+ struct se_device *dev;
+ struct se_portal_group *tpg = lun->lun_tpg;
+ ssize_t ret = -ENODEV;
spin_lock(&lun->lun_sep_lock);
- sep = lun->lun_sep;
- if (!sep) {
- spin_unlock(&lun->lun_sep_lock);
- return -ENODEV;
- }
- tpg = sep->sep_tpg;
- ret = snprintf(page, PAGE_SIZE, "%u\n",
- tpg->se_tpg_tfo->tpg_get_inst_index(tpg));
+ dev = lun->lun_se_dev;
+ if (dev)
+ ret = snprintf(page, PAGE_SIZE, "%u\n",
+ tpg->se_tpg_tfo->tpg_get_inst_index(tpg));
spin_unlock(&lun->lun_sep_lock);
return ret;
}
@@ -990,24 +917,20 @@
{
struct se_lun *lun = container_of(pgrps, struct se_lun, port_stat_grps);
struct se_device *dev = lun->lun_se_dev;
- struct se_port *sep;
- struct se_portal_group *tpg;
+ struct se_portal_group *tpg = lun->lun_tpg;
struct t10_wwn *wwn;
- ssize_t ret;
+ ssize_t ret = -ENODEV;
spin_lock(&lun->lun_sep_lock);
- sep = lun->lun_sep;
- if (!sep) {
- spin_unlock(&lun->lun_sep_lock);
- return -ENODEV;
+ dev = lun->lun_se_dev;
+ if (dev) {
+ wwn = &dev->t10_wwn;
+ /* scsiTransportDevName */
+ ret = snprintf(page, PAGE_SIZE, "%s+%s\n",
+ tpg->se_tpg_tfo->tpg_get_wwn(tpg),
+ (strlen(wwn->unit_serial)) ? wwn->unit_serial :
+ wwn->vendor);
}
- tpg = sep->sep_tpg;
- wwn = &dev->t10_wwn;
- /* scsiTransportDevName */
- ret = snprintf(page, PAGE_SIZE, "%s+%s\n",
- tpg->se_tpg_tfo->tpg_get_wwn(tpg),
- (strlen(wwn->unit_serial)) ? wwn->unit_serial :
- wwn->vendor);
spin_unlock(&lun->lun_sep_lock);
return ret;
}