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Message-Id: <1452458668-11034-3-git-send-email-nab@daterainc.com>
Date: Sun, 10 Jan 2016 20:44:24 +0000
From: "Nicholas A. Bellinger" <nab@...erainc.com>
To: target-devel <target-devel@...r.kernel.org>
Cc: linux-scsi <linux-scsi@...r.kernel.org>,
lkml <linux-kernel@...r.kernel.org>,
Sagi Grimberg <sagig@...lanox.com>,
Christoph Hellwig <hch@....de>, Hannes Reinecke <hare@...e.de>,
Andy Grover <agrover@...hat.com>,
Vasu Dev <vasu.dev@...ux.intel.com>, Vu Pham <vu@...lanox.com>
Subject: [PATCH-for-4.6 2/6] target: Convert demo-mode only drivers to target_alloc_session
From: Christoph Hellwig <hch@....de>
Cc: Christoph Hellwig <hch@....de>
Cc: Hannes Reinecke <hare@...e.de> # loopback
Cc: Chris Boot <bootc@...tc.net> # sbp-target
Cc: Sebastian Andrzej Siewior <bigeasy@...utronix.de> # usb-gadget
Cc: Andrzej Pietrasiewicz <andrzej.p@...sung.com> # usb-gadget
Cc: Juergen Gross <jgross@...e.com> # xen-scsiback
Signed-off-by: Nicholas Bellinger <nab@...ux-iscsi.org>
---
drivers/target/loopback/tcm_loop.c | 35 +++++--------------------
drivers/target/sbp/sbp_target.c | 33 ++++++------------------
drivers/usb/gadget/function/f_tcm.c | 45 ++++++++++----------------------
drivers/xen/xen-scsiback.c | 51 ++++++++++---------------------------
4 files changed, 42 insertions(+), 122 deletions(-)
diff --git a/drivers/target/loopback/tcm_loop.c b/drivers/target/loopback/tcm_loop.c
index d41a5c3..0216c75 100644
--- a/drivers/target/loopback/tcm_loop.c
+++ b/drivers/target/loopback/tcm_loop.c
@@ -806,54 +806,33 @@ static int tcm_loop_make_nexus(
struct tcm_loop_tpg *tl_tpg,
const char *name)
{
- struct se_portal_group *se_tpg;
struct tcm_loop_hba *tl_hba = tl_tpg->tl_hba;
struct tcm_loop_nexus *tl_nexus;
- int ret = -ENOMEM;
if (tl_tpg->tl_nexus) {
pr_debug("tl_tpg->tl_nexus already exists\n");
return -EEXIST;
}
- se_tpg = &tl_tpg->tl_se_tpg;
tl_nexus = kzalloc(sizeof(struct tcm_loop_nexus), GFP_KERNEL);
if (!tl_nexus) {
pr_err("Unable to allocate struct tcm_loop_nexus\n");
return -ENOMEM;
}
- /*
- * Initialize the struct se_session pointer
- */
- tl_nexus->se_sess = transport_init_session(
- TARGET_PROT_DIN_PASS | TARGET_PROT_DOUT_PASS);
+
+ tl_nexus->se_sess = target_alloc_session(&tl_tpg->tl_se_tpg, 0, 0,
+ TARGET_PROT_DIN_PASS | TARGET_PROT_DOUT_PASS,
+ name, tl_nexus, NULL);
if (IS_ERR(tl_nexus->se_sess)) {
- ret = PTR_ERR(tl_nexus->se_sess);
- goto out;
- }
- /*
- * Since we are running in 'demo mode' this call with generate a
- * struct se_node_acl for the tcm_loop struct se_portal_group with the SCSI
- * Initiator port name of the passed configfs group 'name'.
- */
- tl_nexus->se_sess->se_node_acl = core_tpg_check_initiator_node_acl(
- se_tpg, (unsigned char *)name);
- if (!tl_nexus->se_sess->se_node_acl) {
- transport_free_session(tl_nexus->se_sess);
- goto out;
+ kfree(tl_nexus);
+ return PTR_ERR(tl_nexus->se_sess);
}
- /* Now, register the I_T Nexus as active. */
- transport_register_session(se_tpg, tl_nexus->se_sess->se_node_acl,
- tl_nexus->se_sess, tl_nexus);
+
tl_tpg->tl_nexus = tl_nexus;
pr_debug("TCM_Loop_ConfigFS: Established I_T Nexus to emulated"
" %s Initiator Port: %s\n", tcm_loop_dump_proto_id(tl_hba),
name);
return 0;
-
-out:
- kfree(tl_nexus);
- return ret;
}
static int tcm_loop_drop_nexus(
diff --git a/drivers/target/sbp/sbp_target.c b/drivers/target/sbp/sbp_target.c
index 3072f1a..ddd3398 100644
--- a/drivers/target/sbp/sbp_target.c
+++ b/drivers/target/sbp/sbp_target.c
@@ -196,45 +196,28 @@ static struct sbp_session *sbp_session_create(
struct sbp_session *sess;
int ret;
char guid_str[17];
- struct se_node_acl *se_nacl;
+
+ snprintf(guid_str, sizeof(guid_str), "%016llx", guid);
sess = kmalloc(sizeof(*sess), GFP_KERNEL);
if (!sess) {
pr_err("failed to allocate session descriptor\n");
return ERR_PTR(-ENOMEM);
}
+ spin_lock_init(&sess->lock);
+ INIT_LIST_HEAD(&sess->login_list);
+ INIT_DELAYED_WORK(&sess->maint_work, session_maintenance_work);
+ sess->guid = guid;
- sess->se_sess = transport_init_session(TARGET_PROT_NORMAL);
+ sess->se_sess = target_alloc_session(&tpg->se_tpg, 0, 0, TARGET_PROT_NORMAL,
+ guid_str, sess, NULL);
if (IS_ERR(sess->se_sess)) {
pr_err("failed to init se_session\n");
-
ret = PTR_ERR(sess->se_sess);
kfree(sess);
return ERR_PTR(ret);
}
- snprintf(guid_str, sizeof(guid_str), "%016llx", guid);
-
- se_nacl = core_tpg_check_initiator_node_acl(&tpg->se_tpg, guid_str);
- if (!se_nacl) {
- pr_warn("Node ACL not found for %s\n", guid_str);
-
- transport_free_session(sess->se_sess);
- kfree(sess);
-
- return ERR_PTR(-EPERM);
- }
-
- sess->se_sess->se_node_acl = se_nacl;
-
- spin_lock_init(&sess->lock);
- INIT_LIST_HEAD(&sess->login_list);
- INIT_DELAYED_WORK(&sess->maint_work, session_maintenance_work);
-
- sess->guid = guid;
-
- transport_register_session(&tpg->se_tpg, se_nacl, sess->se_sess, sess);
-
return sess;
}
diff --git a/drivers/usb/gadget/function/f_tcm.c b/drivers/usb/gadget/function/f_tcm.c
index bad007b5..2e8b91d 100644
--- a/drivers/usb/gadget/function/f_tcm.c
+++ b/drivers/usb/gadget/function/f_tcm.c
@@ -1581,53 +1581,34 @@ out:
static int tcm_usbg_make_nexus(struct usbg_tpg *tpg, char *name)
{
- struct se_portal_group *se_tpg;
struct tcm_usbg_nexus *tv_nexus;
- int ret;
+ int ret = 0;
mutex_lock(&tpg->tpg_mutex);
if (tpg->tpg_nexus) {
ret = -EEXIST;
pr_debug("tpg->tpg_nexus already exists\n");
- goto err_unlock;
+ goto out_unlock;
}
- se_tpg = &tpg->se_tpg;
- ret = -ENOMEM;
tv_nexus = kzalloc(sizeof(*tv_nexus), GFP_KERNEL);
- if (!tv_nexus)
- goto err_unlock;
- tv_nexus->tvn_se_sess = transport_init_session(TARGET_PROT_NORMAL);
- if (IS_ERR(tv_nexus->tvn_se_sess))
- goto err_free;
+ if (!tv_nexus) {
+ ret = -ENOMEM;
+ goto out_unlock;
+ }
- /*
- * Since we are running in 'demo mode' this call with generate a
- * struct se_node_acl for the tcm_vhost struct se_portal_group with
- * the SCSI Initiator port name of the passed configfs group 'name'.
- */
- tv_nexus->tvn_se_sess->se_node_acl = core_tpg_check_initiator_node_acl(
- se_tpg, name);
- if (!tv_nexus->tvn_se_sess->se_node_acl) {
+ tv_nexus->tvn_se_sess = target_alloc_session(&tpg->se_tpg, 0, 0,
+ TARGET_PROT_NORMAL, name,
+ tv_nexus, NULL);
+ if (IS_ERR(tv_nexus->tvn_se_sess)) {
#define MAKE_NEXUS_MSG "core_tpg_check_initiator_node_acl() failed for %s\n"
pr_debug(MAKE_NEXUS_MSG, name);
#undef MAKE_NEXUS_MSG
- goto err_session;
+ kfree(tv_nexus);
+ ret = PTR_ERR(tv_nexus->tvn_se_sess);
}
- /*
- * Now register the TCM vHost virtual I_T Nexus as active.
- */
- transport_register_session(se_tpg, tv_nexus->tvn_se_sess->se_node_acl,
- tv_nexus->tvn_se_sess, tv_nexus);
- tpg->tpg_nexus = tv_nexus;
- mutex_unlock(&tpg->tpg_mutex);
- return 0;
-err_session:
- transport_free_session(tv_nexus->tvn_se_sess);
-err_free:
- kfree(tv_nexus);
-err_unlock:
+out_unlock:
mutex_unlock(&tpg->tpg_mutex);
return ret;
}
diff --git a/drivers/xen/xen-scsiback.c b/drivers/xen/xen-scsiback.c
index 43bcae8..594f8a7 100644
--- a/drivers/xen/xen-scsiback.c
+++ b/drivers/xen/xen-scsiback.c
@@ -1485,58 +1485,35 @@ static struct configfs_attribute *scsiback_param_attrs[] = {
static int scsiback_make_nexus(struct scsiback_tpg *tpg,
const char *name)
{
- struct se_portal_group *se_tpg;
- struct se_session *se_sess;
struct scsiback_nexus *tv_nexus;
+ int ret = 0;
mutex_lock(&tpg->tv_tpg_mutex);
if (tpg->tpg_nexus) {
- mutex_unlock(&tpg->tv_tpg_mutex);
pr_debug("tpg->tpg_nexus already exists\n");
- return -EEXIST;
+ ret = -EEXIST;
+ goto out_unlock;
}
- se_tpg = &tpg->se_tpg;
tv_nexus = kzalloc(sizeof(struct scsiback_nexus), GFP_KERNEL);
if (!tv_nexus) {
- mutex_unlock(&tpg->tv_tpg_mutex);
- return -ENOMEM;
+ ret = -ENOMEM;
+ goto out_unlock;
}
- /*
- * Initialize the struct se_session pointer
- */
- tv_nexus->tvn_se_sess = transport_init_session(TARGET_PROT_NORMAL);
+
+ tv_nexus->tvn_se_sess = target_alloc_session(&tpg->se_tpg, 0, 0,
+ TARGET_PROT_NORMAL, name,
+ tv_nexus, NULL);
if (IS_ERR(tv_nexus->tvn_se_sess)) {
- mutex_unlock(&tpg->tv_tpg_mutex);
kfree(tv_nexus);
- return -ENOMEM;
- }
- se_sess = tv_nexus->tvn_se_sess;
- /*
- * Since we are running in 'demo mode' this call with generate a
- * struct se_node_acl for the scsiback struct se_portal_group with
- * the SCSI Initiator port name of the passed configfs group 'name'.
- */
- tv_nexus->tvn_se_sess->se_node_acl = core_tpg_check_initiator_node_acl(
- se_tpg, (unsigned char *)name);
- if (!tv_nexus->tvn_se_sess->se_node_acl) {
- mutex_unlock(&tpg->tv_tpg_mutex);
- pr_debug("core_tpg_check_initiator_node_acl() failed for %s\n",
- name);
- goto out;
+ ret = -ENOMEM;
+ goto out_unlock;
}
- /* Now register the TCM pvscsi virtual I_T Nexus as active. */
- transport_register_session(se_tpg, tv_nexus->tvn_se_sess->se_node_acl,
- tv_nexus->tvn_se_sess, tv_nexus);
- tpg->tpg_nexus = tv_nexus;
+ tpg->tpg_nexus = tv_nexus;
+out_unlock:
mutex_unlock(&tpg->tv_tpg_mutex);
- return 0;
-
-out:
- transport_free_session(se_sess);
- kfree(tv_nexus);
- return -ENOMEM;
+ return ret;
}
static int scsiback_drop_nexus(struct scsiback_tpg *tpg)
--
1.9.1
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