These changes are the raw update to linux-4.4.6-rt14. Kernel sources

[kvmfornfv.git] / kernel / drivers / target / target_core_pscsi.c

diff --git a/kernel/drivers/target/target_core_pscsi.c b/kernel/drivers/target/target_core_pscsi.c
index ecc5eae..de18790 100644 (file)
--- a/kernel/drivers/target/target_core_pscsi.c
+++ b/kernel/drivers/target/target_core_pscsi.c
@@ -36,17 +36,15 @@
 #include <linux/module.h>
 #include <asm/unaligned.h>
 
-#include <scsi/scsi.h>
 #include <scsi/scsi_device.h>
-#include <scsi/scsi_cmnd.h>
 #include <scsi/scsi_host.h>
 #include <scsi/scsi_tcq.h>
 
 #include <target/target_core_base.h>
 #include <target/target_core_backend.h>
-#include <target/target_core_backend_configfs.h>
 
 #include "target_core_alua.h"
+#include "target_core_internal.h"
 #include "target_core_pscsi.h"
 
 #define ISPRINT(a)  ((a >= ' ') && (a <= '~'))
@@ -56,8 +54,6 @@ static inline struct pscsi_dev_virt *PSCSI_DEV(struct se_device *dev)
        return container_of(dev, struct pscsi_dev_virt, dev);
 }
 
-static struct se_subsystem_api pscsi_template;
-
 static sense_reason_t pscsi_execute_cmd(struct se_cmd *cmd);
 static void pscsi_req_done(struct request *, int);
 
@@ -82,7 +78,7 @@ static int pscsi_attach_hba(struct se_hba *hba, u32 host_id)
 
        pr_debug("CORE_HBA[%d] - TCM SCSI HBA Driver %s on"
                " Generic Target Core Stack %s\n", hba->hba_id,
-               PSCSI_VERSION, TARGET_CORE_MOD_VERSION);
+               PSCSI_VERSION, TARGET_CORE_VERSION);
        pr_debug("CORE_HBA[%d] - Attached SCSI HBA to Generic\n",
               hba->hba_id);
 
@@ -581,6 +577,14 @@ static int pscsi_configure_device(struct se_device *dev)
        return -ENODEV;
 }
 
+static void pscsi_dev_call_rcu(struct rcu_head *p)
+{
+       struct se_device *dev = container_of(p, struct se_device, rcu_head);
+       struct pscsi_dev_virt *pdv = PSCSI_DEV(dev);
+
+       kfree(pdv);
+}
+
 static void pscsi_free_device(struct se_device *dev)
 {
        struct pscsi_dev_virt *pdv = PSCSI_DEV(dev);
@@ -612,8 +616,7 @@ static void pscsi_free_device(struct se_device *dev)
 
                pdv->pdv_sd = NULL;
        }
-
-       kfree(pdv);
+       call_rcu(&dev->rcu_head, pscsi_dev_call_rcu);
 }
 
 static void pscsi_transport_complete(struct se_cmd *cmd, struct scatterlist *sg,
@@ -637,12 +640,14 @@ static void pscsi_transport_complete(struct se_cmd *cmd, struct scatterlist *sg,
         * Hack to make sure that Write-Protect modepage is set if R/O mode is
         * forced.
         */
-       if (!cmd->se_deve || !cmd->data_length)
+       if (!cmd->data_length)
                goto after_mode_sense;
 
        if (((cdb[0] == MODE_SENSE) || (cdb[0] == MODE_SENSE_10)) &&
             (status_byte(result) << 1) == SAM_STAT_GOOD) {
-               if (cmd->se_deve->lun_flags & TRANSPORT_LUNFLAGS_READ_ONLY) {
+               bool read_only = target_lun_is_rdonly(cmd);
+
+               if (read_only) {
                        unsigned char *buf;
 
                        buf = transport_kmap_data_sg(cmd);
@@ -847,7 +852,7 @@ static ssize_t pscsi_show_configfs_dev_params(struct se_device *dev, char *b)
        return bl;
 }
 
-static void pscsi_bi_endio(struct bio *bio, int error)
+static void pscsi_bi_endio(struct bio *bio)
 {
        bio_put(bio);
 }
@@ -968,7 +973,7 @@ fail:
        while (*hbio) {
                bio = *hbio;
                *hbio = (*hbio)->bi_next;
-               bio_endio(bio, 0);      /* XXX: should be error */
+               bio_endio(bio);
        }
        return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
 }
@@ -1056,7 +1061,7 @@ fail_free_bio:
        while (hbio) {
                struct bio *bio = hbio;
                hbio = hbio->bi_next;
-               bio_endio(bio, 0);      /* XXX: should be error */
+               bio_endio(bio);
        }
        ret = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
 fail:
@@ -1118,27 +1123,7 @@ static void pscsi_req_done(struct request *req, int uptodate)
        kfree(pt);
 }
 
-DEF_TB_DEV_ATTRIB_RO(pscsi, hw_pi_prot_type);
-TB_DEV_ATTR_RO(pscsi, hw_pi_prot_type);
-
-DEF_TB_DEV_ATTRIB_RO(pscsi, hw_block_size);
-TB_DEV_ATTR_RO(pscsi, hw_block_size);
-
-DEF_TB_DEV_ATTRIB_RO(pscsi, hw_max_sectors);
-TB_DEV_ATTR_RO(pscsi, hw_max_sectors);
-
-DEF_TB_DEV_ATTRIB_RO(pscsi, hw_queue_depth);
-TB_DEV_ATTR_RO(pscsi, hw_queue_depth);
-
-static struct configfs_attribute *pscsi_backend_dev_attrs[] = {
-       &pscsi_dev_attrib_hw_pi_prot_type.attr,
-       &pscsi_dev_attrib_hw_block_size.attr,
-       &pscsi_dev_attrib_hw_max_sectors.attr,
-       &pscsi_dev_attrib_hw_queue_depth.attr,
-       NULL,
-};
-
-static struct se_subsystem_api pscsi_template = {
+static const struct target_backend_ops pscsi_ops = {
        .name                   = "pscsi",
        .owner                  = THIS_MODULE,
        .transport_flags        = TRANSPORT_FLAG_PASSTHROUGH,
@@ -1154,21 +1139,17 @@ static struct se_subsystem_api pscsi_template = {
        .show_configfs_dev_params = pscsi_show_configfs_dev_params,
        .get_device_type        = pscsi_get_device_type,
        .get_blocks             = pscsi_get_blocks,
+       .tb_dev_attrib_attrs    = passthrough_attrib_attrs,
 };
 
 static int __init pscsi_module_init(void)
 {
-       struct target_backend_cits *tbc = &pscsi_template.tb_cits;
-
-       target_core_setup_sub_cits(&pscsi_template);
-       tbc->tb_dev_attrib_cit.ct_attrs = pscsi_backend_dev_attrs;
-
-       return transport_subsystem_register(&pscsi_template);
+       return transport_backend_register(&pscsi_ops);
 }
 
 static void __exit pscsi_module_exit(void)
 {
-       transport_subsystem_release(&pscsi_template);
+       target_backend_unregister(&pscsi_ops);
 }
 
 MODULE_DESCRIPTION("TCM PSCSI subsystem plugin");