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

are taken from kernel.org, and rt patch from the rt wiki download page.

During the rebasing, the following patch collided:

Force tick interrupt and get rid of softirq magic(I70131fb85).

Collisions have been removed because its logic was found on the
source already.

Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769
Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>

5 files changed, 39 insertions, 154 deletions

diff --git a/kernel/drivers/target/tcm_fc/tcm_fc.h b/kernel/drivers/target/tcm_fc/tcm_fc.h
index 881deb3d4..39909dade 100644
--- a/kernel/drivers/target/tcm_fc/tcm_fc.h
+++ b/kernel/drivers/target/tcm_fc/tcm_fc.h
@@ -80,8 +80,8 @@ struct ft_node_auth {
  * Node ACL for FC remote port session.
  */
 struct ft_node_acl {
-	struct ft_node_auth node_auth;
 	struct se_node_acl se_node_acl;
+	struct ft_node_auth node_auth;
 };
 
 struct ft_lun {
@@ -157,7 +157,6 @@ int ft_queue_status(struct se_cmd *);
 int ft_queue_data_in(struct se_cmd *);
 int ft_write_pending(struct se_cmd *);
 int ft_write_pending_status(struct se_cmd *);
-u32 ft_get_task_tag(struct se_cmd *);
 int ft_get_cmd_state(struct se_cmd *);
 void ft_queue_tm_resp(struct se_cmd *);
 void ft_aborted_task(struct se_cmd *);
diff --git a/kernel/drivers/target/tcm_fc/tfc_cmd.c b/kernel/drivers/target/tcm_fc/tfc_cmd.c
index edcafa449..064d6dfb5 100644
--- a/kernel/drivers/target/tcm_fc/tfc_cmd.c
+++ b/kernel/drivers/target/tcm_fc/tfc_cmd.c
@@ -30,18 +30,12 @@
 #include <linux/hash.h>
 #include <linux/percpu_ida.h>
 #include <asm/unaligned.h>
-#include <scsi/scsi.h>
-#include <scsi/scsi_host.h>
-#include <scsi/scsi_device.h>
-#include <scsi/scsi_cmnd.h>
 #include <scsi/scsi_tcq.h>
 #include <scsi/libfc.h>
 #include <scsi/fc_encode.h>
 
 #include <target/target_core_base.h>
 #include <target/target_core_fabric.h>
-#include <target/target_core_configfs.h>
-#include <target/configfs_macros.h>
 
 #include "tcm_fc.h"
 
@@ -247,15 +241,6 @@ int ft_write_pending(struct se_cmd *se_cmd)
 	return 0;
 }
 
-u32 ft_get_task_tag(struct se_cmd *se_cmd)
-{
-	struct ft_cmd *cmd = container_of(se_cmd, struct ft_cmd, se_cmd);
-
-	if (cmd->aborted)
-		return ~0;
-	return fc_seq_exch(cmd->seq)->rxid;
-}
-
 int ft_get_cmd_state(struct se_cmd *se_cmd)
 {
 	return 0;
@@ -269,7 +254,7 @@ static void ft_recv_seq(struct fc_seq *sp, struct fc_frame *fp, void *arg)
 	struct ft_cmd *cmd = arg;
 	struct fc_frame_header *fh;
 
-	if (unlikely(IS_ERR(fp))) {
+	if (IS_ERR(fp)) {
 		/* XXX need to find cmd if queued */
 		cmd->seq = NULL;
 		cmd->aborted = true;
@@ -568,6 +553,7 @@ static void ft_send_work(struct work_struct *work)
 	}
 
 	fc_seq_exch(cmd->seq)->lp->tt.seq_set_resp(cmd->seq, ft_recv_seq, cmd);
+	cmd->se_cmd.tag = fc_seq_exch(cmd->seq)->rxid;
 	/*
 	 * Use a single se_cmd->cmd_kref as we expect to release se_cmd
 	 * directly from ft_check_stop_free callback in response path.
diff --git a/kernel/drivers/target/tcm_fc/tfc_conf.c b/kernel/drivers/target/tcm_fc/tfc_conf.c
index 65dce1345..85aeaa0ad 100644
--- a/kernel/drivers/target/tcm_fc/tfc_conf.c
+++ b/kernel/drivers/target/tcm_fc/tfc_conf.c
@@ -34,22 +34,13 @@
 #include <linux/kernel.h>
 #include <linux/ctype.h>
 #include <asm/unaligned.h>
-#include <scsi/scsi.h>
-#include <scsi/scsi_host.h>
-#include <scsi/scsi_device.h>
-#include <scsi/scsi_cmnd.h>
 #include <scsi/libfc.h>
 
 #include <target/target_core_base.h>
 #include <target/target_core_fabric.h>
-#include <target/target_core_fabric_configfs.h>
-#include <target/target_core_configfs.h>
-#include <target/configfs_macros.h>
 
 #include "tcm_fc.h"
 
-static const struct target_core_fabric_ops ft_fabric_ops;
-
 static LIST_HEAD(ft_wwn_list);
 DEFINE_MUTEX(ft_lport_lock);
 
@@ -138,55 +129,51 @@ static ssize_t ft_wwn_store(void *arg, const char *buf, size_t len)
  * ACL auth ops.
  */
 
-static ssize_t ft_nacl_show_port_name(
-	struct se_node_acl *se_nacl,
-	char *page)
+static ssize_t ft_nacl_port_name_show(struct config_item *item, char *page)
 {
+	struct se_node_acl *se_nacl = acl_to_nacl(item);
 	struct ft_node_acl *acl = container_of(se_nacl,
 			struct ft_node_acl, se_node_acl);
 
 	return ft_wwn_show(&acl->node_auth.port_name, page);
 }
 
-static ssize_t ft_nacl_store_port_name(
-	struct se_node_acl *se_nacl,
-	const char *page,
-	size_t count)
+static ssize_t ft_nacl_port_name_store(struct config_item *item,
+		const char *page, size_t count)
 {
+	struct se_node_acl *se_nacl = acl_to_nacl(item);
 	struct ft_node_acl *acl = container_of(se_nacl,
 			struct ft_node_acl, se_node_acl);
 
 	return ft_wwn_store(&acl->node_auth.port_name, page, count);
 }
 
-TF_NACL_BASE_ATTR(ft, port_name, S_IRUGO | S_IWUSR);
-
-static ssize_t ft_nacl_show_node_name(
-	struct se_node_acl *se_nacl,
-	char *page)
+static ssize_t ft_nacl_node_name_show(struct config_item *item,
+		char *page)
 {
+	struct se_node_acl *se_nacl = acl_to_nacl(item);
 	struct ft_node_acl *acl = container_of(se_nacl,
 			struct ft_node_acl, se_node_acl);
 
 	return ft_wwn_show(&acl->node_auth.node_name, page);
 }
 
-static ssize_t ft_nacl_store_node_name(
-	struct se_node_acl *se_nacl,
-	const char *page,
-	size_t count)
+static ssize_t ft_nacl_node_name_store(struct config_item *item,
+		const char *page, size_t count)
 {
+	struct se_node_acl *se_nacl = acl_to_nacl(item);
 	struct ft_node_acl *acl = container_of(se_nacl,
 			struct ft_node_acl, se_node_acl);
 
 	return ft_wwn_store(&acl->node_auth.node_name, page, count);
 }
 
-TF_NACL_BASE_ATTR(ft, node_name, S_IRUGO | S_IWUSR);
+CONFIGFS_ATTR(ft_nacl_, node_name);
+CONFIGFS_ATTR(ft_nacl_, port_name);
 
 static struct configfs_attribute *ft_nacl_base_attrs[] = {
-	&ft_nacl_port_name.attr,
-	&ft_nacl_node_name.attr,
+	&ft_nacl_attr_port_name,
+	&ft_nacl_attr_node_name,
 	NULL,
 };
 
@@ -198,48 +185,17 @@ static struct configfs_attribute *ft_nacl_base_attrs[] = {
  * Add ACL for an initiator.  The ACL is named arbitrarily.
  * The port_name and/or node_name are attributes.
  */
-static struct se_node_acl *ft_add_acl(
-	struct se_portal_group *se_tpg,
-	struct config_group *group,
-	const char *name)
+static int ft_init_nodeacl(struct se_node_acl *nacl, const char *name)
 {
-	struct ft_node_acl *acl;
-	struct ft_tpg *tpg;
+	struct ft_node_acl *acl =
+		container_of(nacl, struct ft_node_acl, se_node_acl);
 	u64 wwpn;
-	u32 q_depth;
-
-	pr_debug("add acl %s\n", name);
-	tpg = container_of(se_tpg, struct ft_tpg, se_tpg);
 
 	if (ft_parse_wwn(name, &wwpn, 1) < 0)
-		return ERR_PTR(-EINVAL);
+		return -EINVAL;
 
-	acl = kzalloc(sizeof(struct ft_node_acl), GFP_KERNEL);
-	if (!acl)
-		return ERR_PTR(-ENOMEM);
 	acl->node_auth.port_name = wwpn;
-
-	q_depth = 32;		/* XXX bogus default - get from tpg? */
-	return core_tpg_add_initiator_node_acl(&tpg->se_tpg,
-				&acl->se_node_acl, name, q_depth);
-}
-
-static void ft_del_acl(struct se_node_acl *se_acl)
-{
-	struct se_portal_group *se_tpg = se_acl->se_tpg;
-	struct ft_tpg *tpg;
-	struct ft_node_acl *acl = container_of(se_acl,
-				struct ft_node_acl, se_node_acl);
-
-	pr_debug("del acl %s\n",
-		config_item_name(&se_acl->acl_group.cg_item));
-
-	tpg = container_of(se_tpg, struct ft_tpg, se_tpg);
-	pr_debug("del acl %p se_acl %p tpg %p se_tpg %p\n",
-		    acl, se_acl, tpg, &tpg->se_tpg);
-
-	core_tpg_del_initiator_node_acl(&tpg->se_tpg, se_acl, 1);
-	kfree(acl);
+	return 0;
 }
 
 struct ft_node_acl *ft_acl_get(struct ft_tpg *tpg, struct fc_rport_priv *rdata)
@@ -249,7 +205,7 @@ struct ft_node_acl *ft_acl_get(struct ft_tpg *tpg, struct fc_rport_priv *rdata)
 	struct se_portal_group *se_tpg = &tpg->se_tpg;
 	struct se_node_acl *se_acl;
 
-	spin_lock_irq(&se_tpg->acl_node_lock);
+	mutex_lock(&se_tpg->acl_node_mutex);
 	list_for_each_entry(se_acl, &se_tpg->acl_node_list, acl_list) {
 		acl = container_of(se_acl, struct ft_node_acl, se_node_acl);
 		pr_debug("acl %p port_name %llx\n",
@@ -263,33 +219,10 @@ struct ft_node_acl *ft_acl_get(struct ft_tpg *tpg, struct fc_rport_priv *rdata)
 			break;
 		}
 	}
-	spin_unlock_irq(&se_tpg->acl_node_lock);
+	mutex_unlock(&se_tpg->acl_node_mutex);
 	return found;
 }
 
-static struct se_node_acl *ft_tpg_alloc_fabric_acl(struct se_portal_group *se_tpg)
-{
-	struct ft_node_acl *acl;
-
-	acl = kzalloc(sizeof(*acl), GFP_KERNEL);
-	if (!acl) {
-		pr_err("Unable to allocate struct ft_node_acl\n");
-		return NULL;
-	}
-	pr_debug("acl %p\n", acl);
-	return &acl->se_node_acl;
-}
-
-static void ft_tpg_release_fabric_acl(struct se_portal_group *se_tpg,
-				      struct se_node_acl *se_acl)
-{
-	struct ft_node_acl *acl = container_of(se_acl,
-				struct ft_node_acl, se_node_acl);
-
-	pr_debug("acl %p\n", acl);
-	kfree(acl);
-}
-
 /*
  * local_port port_group (tpg) ops.
  */
@@ -337,8 +270,7 @@ static struct se_portal_group *ft_add_tpg(
 		return NULL;
 	}
 
-	ret = core_tpg_register(&ft_fabric_ops, wwn, &tpg->se_tpg,
-				tpg, TRANSPORT_TPG_TYPE_NORMAL);
+	ret = core_tpg_register(wwn, &tpg->se_tpg, SCSI_PROTOCOL_FCP);
 	if (ret < 0) {
 		destroy_workqueue(wq);
 		kfree(tpg);
@@ -448,21 +380,24 @@ static void ft_del_wwn(struct se_wwn *wwn)
 	kfree(ft_wwn);
 }
 
-static ssize_t ft_wwn_show_attr_version(
-	struct target_fabric_configfs *tf,
-	char *page)
+static ssize_t ft_wwn_version_show(struct config_item *item, char *page)
 {
 	return sprintf(page, "TCM FC " FT_VERSION " on %s/%s on "
 		""UTS_RELEASE"\n",  utsname()->sysname, utsname()->machine);
 }
 
-TF_WWN_ATTR_RO(ft, version);
+CONFIGFS_ATTR_RO(ft_wwn_, version);
 
 static struct configfs_attribute *ft_wwn_attrs[] = {
-	&ft_wwn_version.attr,
+	&ft_wwn_attr_version,
 	NULL,
 };
 
+static inline struct ft_tpg *ft_tpg(struct se_portal_group *se_tpg)
+{
+	return container_of(se_tpg, struct ft_tpg, se_tpg);
+}
+
 static char *ft_get_fabric_name(void)
 {
 	return "fc";
@@ -470,25 +405,16 @@ static char *ft_get_fabric_name(void)
 
 static char *ft_get_fabric_wwn(struct se_portal_group *se_tpg)
 {
-	struct ft_tpg *tpg = se_tpg->se_tpg_fabric_ptr;
-
-	return tpg->lport_wwn->name;
+	return ft_tpg(se_tpg)->lport_wwn->name;
 }
 
 static u16 ft_get_tag(struct se_portal_group *se_tpg)
 {
-	struct ft_tpg *tpg = se_tpg->se_tpg_fabric_ptr;
-
 	/*
 	 * This tag is used when forming SCSI Name identifier in EVPD=1 0x83
 	 * to represent the SCSI Target Port.
 	 */
-	return tpg->index;
-}
-
-static u32 ft_get_default_depth(struct se_portal_group *se_tpg)
-{
-	return 1;
+	return ft_tpg(se_tpg)->index;
 }
 
 static int ft_check_false(struct se_portal_group *se_tpg)
@@ -502,28 +428,20 @@ static void ft_set_default_node_attr(struct se_node_acl *se_nacl)
 
 static u32 ft_tpg_get_inst_index(struct se_portal_group *se_tpg)
 {
-	struct ft_tpg *tpg = se_tpg->se_tpg_fabric_ptr;
-
-	return tpg->index;
+	return ft_tpg(se_tpg)->index;
 }
 
 static const struct target_core_fabric_ops ft_fabric_ops = {
 	.module =			THIS_MODULE,
 	.name =				"fc",
+	.node_acl_size =		sizeof(struct ft_node_acl),
 	.get_fabric_name =		ft_get_fabric_name,
-	.get_fabric_proto_ident =	fc_get_fabric_proto_ident,
 	.tpg_get_wwn =			ft_get_fabric_wwn,
 	.tpg_get_tag =			ft_get_tag,
-	.tpg_get_default_depth =	ft_get_default_depth,
-	.tpg_get_pr_transport_id =	fc_get_pr_transport_id,
-	.tpg_get_pr_transport_id_len =	fc_get_pr_transport_id_len,
-	.tpg_parse_pr_out_transport_id = fc_parse_pr_out_transport_id,
 	.tpg_check_demo_mode =		ft_check_false,
 	.tpg_check_demo_mode_cache =	ft_check_false,
 	.tpg_check_demo_mode_write_protect = ft_check_false,
 	.tpg_check_prod_mode_write_protect = ft_check_false,
-	.tpg_alloc_fabric_acl =		ft_tpg_alloc_fabric_acl,
-	.tpg_release_fabric_acl =	ft_tpg_release_fabric_acl,
 	.tpg_get_inst_index =		ft_tpg_get_inst_index,
 	.check_stop_free =		ft_check_stop_free,
 	.release_cmd =			ft_release_cmd,
@@ -534,7 +452,6 @@ static const struct target_core_fabric_ops ft_fabric_ops = {
 	.write_pending =		ft_write_pending,
 	.write_pending_status =		ft_write_pending_status,
 	.set_default_node_attributes =	ft_set_default_node_attr,
-	.get_task_tag =			ft_get_task_tag,
 	.get_cmd_state =		ft_get_cmd_state,
 	.queue_data_in =		ft_queue_data_in,
 	.queue_status =			ft_queue_status,
@@ -548,12 +465,7 @@ static const struct target_core_fabric_ops ft_fabric_ops = {
 	.fabric_drop_wwn =		&ft_del_wwn,
 	.fabric_make_tpg =		&ft_add_tpg,
 	.fabric_drop_tpg =		&ft_del_tpg,
-	.fabric_post_link =		NULL,
-	.fabric_pre_unlink =		NULL,
-	.fabric_make_np =		NULL,
-	.fabric_drop_np =		NULL,
-	.fabric_make_nodeacl =		&ft_add_acl,
-	.fabric_drop_nodeacl =		&ft_del_acl,
+	.fabric_init_nodeacl =		&ft_init_nodeacl,
 
 	.tfc_wwn_attrs			= ft_wwn_attrs,
 	.tfc_tpg_nacl_base_attrs	= ft_nacl_base_attrs,
diff --git a/kernel/drivers/target/tcm_fc/tfc_io.c b/kernel/drivers/target/tcm_fc/tfc_io.c
index 583e755d8..847c1aa6f 100644
--- a/kernel/drivers/target/tcm_fc/tfc_io.c
+++ b/kernel/drivers/target/tcm_fc/tfc_io.c
@@ -39,17 +39,11 @@
 #include <linux/hash.h>
 #include <linux/ratelimit.h>
 #include <asm/unaligned.h>
-#include <scsi/scsi.h>
-#include <scsi/scsi_host.h>
-#include <scsi/scsi_device.h>
-#include <scsi/scsi_cmnd.h>
 #include <scsi/libfc.h>
 #include <scsi/fc_encode.h>
 
 #include <target/target_core_base.h>
 #include <target/target_core_fabric.h>
-#include <target/target_core_configfs.h>
-#include <target/configfs_macros.h>
 
 #include "tcm_fc.h"
 
diff --git a/kernel/drivers/target/tcm_fc/tfc_sess.c b/kernel/drivers/target/tcm_fc/tfc_sess.c
index ccee7e332..7b934eac9 100644
--- a/kernel/drivers/target/tcm_fc/tfc_sess.c
+++ b/kernel/drivers/target/tcm_fc/tfc_sess.c
@@ -32,16 +32,10 @@
 #include <linux/rculist.h>
 #include <linux/kref.h>
 #include <asm/unaligned.h>
-#include <scsi/scsi.h>
-#include <scsi/scsi_host.h>
-#include <scsi/scsi_device.h>
-#include <scsi/scsi_cmnd.h>
 #include <scsi/libfc.h>
 
 #include <target/target_core_base.h>
 #include <target/target_core_fabric.h>
-#include <target/target_core_configfs.h>
-#include <target/configfs_macros.h>
 
 #include "tcm_fc.h"