[PATCH 00/24] target updates for .38-rc3 (v2)

[PATCH 00/24] target updates for .38-rc3 (v2)

[Nicholas A. Bellinger]

From: Nicholas Bellinger <nab@linux-iscsi.org>

Greetings James and Co,

This 'for-38-rc3' series updates target code from the initial mainline merge
commit to TCM v4.0.0-rc7+ in the LIO upstream tree.  This includes a number
of bug-fixes and minor cleanups submitted to linux-scsi over the past weeks,
and addresses a handful of issues that have appeared thus far during initial
.38-rc1,2 testing with mainline target code.

Please review and apply.  The patches are also available in git here:

  git://git.kernel.org/pub/scm/linux/kernel/git/nab/scsi-post-merge-2.6.git for-38-rc3-v2

This series is made against the following commit HEAD:

  commit 1bae4ce27c9c90344f23c65ea6966c50ffeae2f5
  Author: Linus Torvalds <torvalds@linux-foundation.org>
  Date:   Fri Jan 21 19:01:34 2011 -0800

      Linux 2.6.38-rc2

Thanks again to everyone who has submitted patches!

Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>

Christoph Hellwig (2):
  target: do not include target_core_mib.h under include/target
  target: remove EXTRA_CFLAGS

Dan Carpenter (4):
  target: iblock/pscsi claim checking for NULL instead of IS_ERR
  target: fix dubious one-bit signed bitfield
  target: Convert rd_build_device_space() to use errno
  target: Remove unnecessary container_of() pointer check

Fubo Chen (3):
  target: Drop nacl->device_list_lock on
    core_update_device_list_for_node failure
  target: Remove unnecessary hba_dev_list walk + release from
    core_delete_hba
  target: Minor sparse warning fixes and annotations

Jesper Juhl (1):
  target/file: Fix memory leak in fd_set_configfs_dev_params().

Nicholas Bellinger (12):
  target/iblock: Fix failed bd claim NULL pointer dereference
  target/iblock: Fix memory leak in iblock_set_configfs_dev_params
  target: Fix memory leaks in
    target_core_dev_pr_store_attr_res_aptpl_metadata
  target: Fix demo-mode MappedLUN shutdown UA/PR breakage
  target: Release left-over demo-mode NodeACLs w/
    tfo->tpg_check_demo_mode_cache()=1
  target: tcm_mod_builder.py generated Makefile cleanups
  target: Call proc_mkdir + remove_proc_entry with NULL parameter
  target: Convert backend ->create_virtdevice() call to return ERR_PTR
  target: Remove unnecessary se_clear_dev_ports legacy code
  target: Remove spurious double cast from structure macro accessors
  target: Convert TMR REQ/RSP definitions to target namespace
  target core v4.0.0-rc7

Roland Dreier (2):
  target: Fix memory leak on error path
  target: Remove unneeded test of se_cmd

 Documentation/target/tcm_mod_builder.py |   17 +++----
 drivers/target/Makefile                 |    1 -
 drivers/target/target_core_configfs.c   |   50 ++++++++++++++++-----
 drivers/target/target_core_device.c     |   74 ++++++++-----------------------
 drivers/target/target_core_fabric_lib.c |    1 +
 drivers/target/target_core_file.c       |   26 +++++++++--
 drivers/target/target_core_hba.c        |   16 +-----
 drivers/target/target_core_iblock.c     |   34 +++++++++-----
 drivers/target/target_core_mib.c        |   20 ++++++++
 drivers/target/target_core_mib.h        |    7 ---
 drivers/target/target_core_pscsi.c      |   26 ++++++-----
 drivers/target/target_core_rd.c         |   15 +++---
 drivers/target/target_core_rd.h         |    2 -
 drivers/target/target_core_tpg.c        |   23 ++++++++++
 drivers/target/target_core_transport.c  |   24 ++++------
 include/target/target_core_base.h       |   46 +++++++++++--------
 include/target/target_core_fabric_ops.h |    2 +-
 include/target/target_core_tmr.h        |   52 +++++++++------------
 include/target/target_core_transport.h  |    4 ++
 19 files changed, 240 insertions(+), 200 deletions(-)

-- 
1.7.3.5

[PATCH 01/24] target: iblock/pscsi claim checking for NULL instead of IS_ERR

[Nicholas A. Bellinger]

From: Dan Carpenter <error27@gmail.com>

blkdev_get_by_path() returns an ERR_PTR() or error and it doesn't return
a NULL.  It looks like this bug would be easy to trigger by mistake.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
(cherry picked from commit 862ede4cbaff06aa9fe04890d5144878804db7df)
---
 drivers/target/target_core_iblock.c |    2 +-
 drivers/target/target_core_pscsi.c  |    4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/target/target_core_iblock.c b/drivers/target/target_core_iblock.c
index c6e0d75..3456135 100644
--- a/drivers/target/target_core_iblock.c
+++ b/drivers/target/target_core_iblock.c
@@ -154,7 +154,7 @@ static struct se_device *iblock_create_virtdevice(
 
 	bd = blkdev_get_by_path(ib_dev->ibd_udev_path,
 				FMODE_WRITE|FMODE_READ|FMODE_EXCL, ib_dev);
-	if (!(bd))
+	if (IS_ERR(bd))
 		goto failed;
 	/*
 	 * Setup the local scope queue_limits from struct request_queue->limits
diff --git a/drivers/target/target_core_pscsi.c b/drivers/target/target_core_pscsi.c
index 742d246..f2a0847 100644
--- a/drivers/target/target_core_pscsi.c
+++ b/drivers/target/target_core_pscsi.c
@@ -462,8 +462,8 @@ static struct se_device *pscsi_create_type_disk(
 	 */
 	bd = blkdev_get_by_path(se_dev->se_dev_udev_path,
 				FMODE_WRITE|FMODE_READ|FMODE_EXCL, pdv);
-	if (!(bd)) {
-		printk("pSCSI: blkdev_get_by_path() failed\n");
+	if (IS_ERR(bd)) {
+		printk(KERN_ERR "pSCSI: blkdev_get_by_path() failed\n");
 		scsi_device_put(sd);
 		return NULL;
 	}
-- 
1.7.3.5

[PATCH 02/24] target: fix dubious one-bit signed bitfield

[Nicholas A. Bellinger]

From: Dan Carpenter <error27@gmail.com>

The signed one-bit types can be 0 or -1 which can cause a problem if
someone ever checks if (foo->lu_gp_assoc == 1).  The current code is
fine because everyone just checks zero vs non-zero.  But Sparse
complains about it so lets change it.  The warnings look like this:

include/target/target_core_base.h:228:26: error: dubious one-bit signed bitfield

Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
(cherry picked from commit daf0bd7aa57e14b903c81761b421e1130f12b7d1)
---
 include/target/target_core_base.h       |   14 +++++++-------
 include/target/target_core_fabric_ops.h |    2 +-
 2 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/include/target/target_core_base.h b/include/target/target_core_base.h
index 07fdfb6..764177b 100644
--- a/include/target/target_core_base.h
+++ b/include/target/target_core_base.h
@@ -225,7 +225,7 @@ struct t10_alua_lu_gp {
 } ____cacheline_aligned;
 
 struct t10_alua_lu_gp_member {
-	int lu_gp_assoc:1;
+	bool lu_gp_assoc;
 	atomic_t lu_gp_mem_ref_cnt;
 	spinlock_t lu_gp_mem_lock;
 	struct t10_alua_lu_gp *lu_gp;
@@ -257,7 +257,7 @@ struct t10_alua_tg_pt_gp {
 } ____cacheline_aligned;
 
 struct t10_alua_tg_pt_gp_member {
-	int tg_pt_gp_assoc:1;
+	bool tg_pt_gp_assoc;
 	atomic_t tg_pt_gp_mem_ref_cnt;
 	spinlock_t tg_pt_gp_mem_lock;
 	struct t10_alua_tg_pt_gp *tg_pt_gp;
@@ -322,7 +322,7 @@ struct t10_pr_registration {
 	int pr_res_type;
 	int pr_res_scope;
 	/* Used for fabric initiator WWPNs using a ISID */
-	int isid_present_at_reg:1;
+	bool isid_present_at_reg;
 	u32 pr_res_mapped_lun;
 	u32 pr_aptpl_target_lun;
 	u32 pr_res_generation;
@@ -404,7 +404,7 @@ struct se_transport_task {
 	unsigned long long	t_task_lba;
 	int			t_tasks_failed;
 	int			t_tasks_fua;
-	int			t_tasks_bidi:1;
+	bool			t_tasks_bidi;
 	u32			t_task_cdbs;
 	u32			t_tasks_check;
 	u32			t_tasks_no;
@@ -456,7 +456,7 @@ struct se_task {
 	u8		task_flags;
 	int		task_error_status;
 	int		task_state_flags;
-	int		task_padded_sg:1;
+	bool		task_padded_sg;
 	unsigned long long	task_lba;
 	u32		task_no;
 	u32		task_sectors;
@@ -569,7 +569,7 @@ struct se_ua {
 struct se_node_acl {
 	char			initiatorname[TRANSPORT_IQN_LEN];
 	/* Used to signal demo mode created ACL, disabled by default */
-	int			dynamic_node_acl:1;
+	bool			dynamic_node_acl;
 	u32			queue_depth;
 	u32			acl_index;
 	u64			num_cmds;
@@ -622,7 +622,7 @@ struct se_lun_acl {
 }  ____cacheline_aligned;
 
 struct se_dev_entry {
-	int			def_pr_registered:1;
+	bool			def_pr_registered;
 	/* See transport_lunflags_table */
 	u32			lun_flags;
 	u32			deve_cmds;
diff --git a/include/target/target_core_fabric_ops.h b/include/target/target_core_fabric_ops.h
index f3ac12b..5eb8b1a 100644
--- a/include/target/target_core_fabric_ops.h
+++ b/include/target/target_core_fabric_ops.h
@@ -8,7 +8,7 @@ struct target_core_fabric_ops {
 	 * for scatterlist chaining using transport_do_task_sg_link(),
 	 * disabled by default
 	 */
-	int task_sg_chaining:1;
+	bool task_sg_chaining;
 	char *(*get_fabric_name)(void);
 	u8 (*get_fabric_proto_ident)(struct se_portal_group *);
 	char *(*tpg_get_wwn)(struct se_portal_group *);
-- 
1.7.3.5

[PATCH 03/24] target/iblock: Fix failed bd claim NULL pointer dereference

[Nicholas A. Bellinger]

From: Nicholas Bellinger <nab@linux-iscsi.org>

This patch adds an explict check for struct iblock_dev->ibd_bd in
iblock_free_device() before calling blkdev_put(), which will otherwise hit
the following NULL pointer dereference @ ib_dev->ibd_bd when iblock_create_virtdevice()
fails to claim an already in-use struct block_device via blkdev_get_by_path().

[  112.528578] Target_Core_ConfigFS: Allocated struct se_subsystem_dev: ffff88001e750000 se_dev_su_ptr: ffff88001dd05d70
[  112.534681] Target_Core_ConfigFS: Calling t->free_device() for se_dev_su_ptr: ffff88001dd05d70
[  112.535029] BUG: unable to handle kernel NULL pointer dereference at 0000000000000020
[  112.535029] IP: [<ffffffff814987a3>] mutex_lock+0x14/0x35
[  112.535029] PGD 1e5d0067 PUD 1e274067 PMD 0
[  112.535029] Oops: 0002 [#1] SMP
[  112.535029] last sysfs file: /sys/devices/pci0000:00/0000:00:07.1/host2/target2:0:0/2:0:0:0/type
[  112.535029] CPU 0
[  112.535029] Modules linked in: iscsi_target_mod target_core_stgt scsi_tgt target_core_pscsi target_core_file target_core_iblock target_core_mod configfs sr_mod cdrom sd_mod ata_piix mptspi mptscsih libata mptbase [last unloaded: scsi_wait_scan]
[  112.535029]
[  112.535029] Pid: 3345, comm: python2.5 Not tainted 2.6.37+ #1 440BX Desktop Reference Platform/VMware Virtual Platform
[  112.535029] RIP: 0010:[<ffffffff814987a3>]  [<ffffffff814987a3>] mutex_lock+0x14/0x35
[  112.535029] RSP: 0018:ffff88001e6d7d58  EFLAGS: 00010246
[  112.535029] RAX: 0000000000000000 RBX: 0000000000000020 RCX: 0000000000000082
[  112.535029] RDX: ffff88001e6d7fd8 RSI: 0000000000000083 RDI: 0000000000000020
[  112.535029] RBP: ffff88001e6d7d68 R08: 0000000000000000 R09: 0000000000000000
[  112.535029] R10: ffff8800000be860 R11: ffff88001f420000 R12: 0000000000000020
[  112.535029] R13: 0000000000000083 R14: ffff88001d809430 R15: ffff88001d8094f8
[  112.535029] FS:  00007ff17ca7d6e0(0000) GS:ffff88001fa00000(0000) knlGS:0000000000000000
[  112.535029] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  112.535029] CR2: 0000000000000020 CR3: 000000001e5d2000 CR4: 00000000000006f0
[  112.535029] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  112.535029] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
[  112.535029] Process python2.5 (pid: 3345, threadinfo ffff88001e6d6000, task ffff88001e2d0760)
[  112.535029] Stack:
[  112.535029]  ffff88001e6d7d88 0000000000000000 ffff88001e6d7d98 ffffffff811187fc
[  112.535029]  ffff88001d809430 ffff88001dd05d70 ffff88001e750860 ffff88001e750000
[  112.535029]  ffff88001e6d7db8 ffffffffa00e3757 ffff88001e6d7db8 0000000000000004
[  112.535029] Call Trace:
[  112.535029]  [<ffffffff811187fc>] blkdev_put+0x28/0x107
[  112.535029]  [<ffffffffa00e3757>] iblock_free_device+0x1d/0x36 [target_core_iblock]
[  112.535029]  [<ffffffffa00a319c>] target_core_drop_subdev+0x15f/0x18d [target_core_mod]
[  112.535029]  [<ffffffffa00960db>] client_drop_item+0x25/0x31 [configfs]
[  112.535029]  [<ffffffffa00967b5>] configfs_rmdir+0x1a1/0x223 [configfs]
[  112.535029]  [<ffffffff810fa8cd>] vfs_rmdir+0x7e/0xd3
[  112.535029]  [<ffffffff810fc3be>] do_rmdir+0xa3/0xf4
[  112.535029]  [<ffffffff810fc446>] sys_rmdir+0x11/0x13
[  112.535029]  [<ffffffff81002a92>] system_call_fastpath+0x16/0x1b
[  112.535029] Code: 8b 04 25 88 b5 00 00 48 2d d8 1f 00 00 48 89 43 18 31 c0 5e 5b c9 c3 55 48 89 e5 53 48 89 fb 48 83 ec 08 e8 c4 f7 ff ff 48 89 df <3e> ff 0f 79 05 e8 1e ff ff ff 65 48 8b 04 25 88 b5 00 00 48 2d
[  112.535029] RIP  [<ffffffff814987a3>] mutex_lock+0x14/0x35
[  112.535029]  RSP <ffff88001e6d7d58>
[  112.535029] CR2: 0000000000000020
[  132.679636] ---[ end trace 05754bb48eb828f0 ]---

Note it also adds an second explict check for ib_dev->ibd_bio_set before calling
bioset_free() to fix the same possible NULL pointer deference during an early
iblock_create_virtdevice() failure.

Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
(cherry picked from commit c291a111b7219b10728f5857576fd06f3def95c3)
---
 drivers/target/target_core_iblock.c |    6 ++++--
 1 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/target/target_core_iblock.c b/drivers/target/target_core_iblock.c
index 3456135..67f0c09 100644
--- a/drivers/target/target_core_iblock.c
+++ b/drivers/target/target_core_iblock.c
@@ -220,8 +220,10 @@ static void iblock_free_device(void *p)
 {
 	struct iblock_dev *ib_dev = p;
 
-	blkdev_put(ib_dev->ibd_bd, FMODE_WRITE|FMODE_READ|FMODE_EXCL);
-	bioset_free(ib_dev->ibd_bio_set);
+	if (ib_dev->ibd_bd != NULL)
+		blkdev_put(ib_dev->ibd_bd, FMODE_WRITE|FMODE_READ|FMODE_EXCL);
+	if (ib_dev->ibd_bio_set != NULL)
+		bioset_free(ib_dev->ibd_bio_set);
 	kfree(ib_dev);
 }
 
-- 
1.7.3.5

[PATCH 04/24] target: Fix memory leak on error path

[Nicholas A. Bellinger]

From: Roland Dreier <rolandd@cisco.com>

If allocation of pt->pscsi_cdb fails, we need to free the just-allocated
pt or else it will be leaked.

Signed-off-by: Roland Dreier <rolandd@cisco.com>
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
(cherry picked from commit 7c4f4d0521c34596d7cb613d530a83538a0f9add)
(cherry picked from commit dea3bdb0081940ca9e2d435c19e00ddb623e9a4c)
---
 drivers/target/target_core_pscsi.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/drivers/target/target_core_pscsi.c b/drivers/target/target_core_pscsi.c
index f2a0847..f596cb7 100644
--- a/drivers/target/target_core_pscsi.c
+++ b/drivers/target/target_core_pscsi.c
@@ -817,6 +817,7 @@ pscsi_alloc_task(struct se_cmd *cmd)
 		if (!(pt->pscsi_cdb)) {
 			printk(KERN_ERR "pSCSI: Unable to allocate extended"
 					" pt->pscsi_cdb\n");
+			kfree(pt);
 			return NULL;
 		}
 	} else
-- 
1.7.3.5

[PATCH 05/24] target: Remove unneeded test of se_cmd

[Nicholas A. Bellinger]

From: Roland Dreier <rolandd@cisco.com>

se_cmd is dereferenced unconditionally in many other parts of
transport_get_lun_for_cmd() so remove the last test whether se_cmd is NULL.

Signed-off-by: Roland Dreier <rolandd@cisco.com>
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
(cherry picked from commit 04763c76c8ea7ecea5c59ff80f076d6285a5b756)
(cherry picked from commit 722a630caa116fd5e51c31baba8dae662c0d1221)
---
 drivers/target/target_core_device.c |   22 +++++++++-------------
 1 files changed, 9 insertions(+), 13 deletions(-)

diff --git a/drivers/target/target_core_device.c b/drivers/target/target_core_device.c
index 317ce58..d94933d 100644
--- a/drivers/target/target_core_device.c
+++ b/drivers/target/target_core_device.c
@@ -69,21 +69,17 @@ int transport_get_lun_for_cmd(
 	deve = se_cmd->se_deve =
 			&SE_NODE_ACL(se_sess)->device_list[unpacked_lun];
 	if (deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS) {
-		if (se_cmd) {
-			deve->total_cmds++;
-			deve->total_bytes += se_cmd->data_length;
-
-			if (se_cmd->data_direction == DMA_TO_DEVICE) {
-				if (deve->lun_flags &
-						TRANSPORT_LUNFLAGS_READ_ONLY) {
-					read_only = 1;
-					goto out;
-				}
-				deve->write_bytes += se_cmd->data_length;
-			} else if (se_cmd->data_direction ==
-				   DMA_FROM_DEVICE) {
-				deve->read_bytes += se_cmd->data_length;
+		deve->total_cmds++;
+		deve->total_bytes += se_cmd->data_length;
+
+		if (se_cmd->data_direction == DMA_TO_DEVICE) {
+			if (deve->lun_flags & TRANSPORT_LUNFLAGS_READ_ONLY) {
+				read_only = 1;
+				goto out;
 			}
+			deve->write_bytes += se_cmd->data_length;
+		} else if (se_cmd->data_direction == DMA_FROM_DEVICE) {
+			deve->read_bytes += se_cmd->data_length;
 		}
 		deve->deve_cmds++;
 
-- 
1.7.3.5

[PATCH 06/24] target/file: Fix memory leak in fd_set_configfs_dev_params().

[Nicholas A. Bellinger]

From: Jesper Juhl <jj@chaosbits.net>

match_strdup() dynamically allocates memory and it is the responsabillity
of the caller to free that memory. In
drivers/target/target_core_file.c::fd_set_configfs_dev_params() two calls
are made to match_strdup() and in neither case is the allocated memory
freed, but instead it is leaked.

This patch should take care of the problem by kfree()'ing the allocated
memory once it is no longer needed. It also makes sure to return -ENOMEM
if the memory allocation in match_strdup() should fail.

Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
(cherry picked from commit 5c45b37c62fad18543e3f5eb55892ef34d161830)
---
 drivers/target/target_core_file.c |   13 ++++++++++++-
 1 files changed, 12 insertions(+), 1 deletions(-)

diff --git a/drivers/target/target_core_file.c b/drivers/target/target_core_file.c
index 0aaca88..676a010 100644
--- a/drivers/target/target_core_file.c
+++ b/drivers/target/target_core_file.c
@@ -537,15 +537,26 @@ static ssize_t fd_set_configfs_dev_params(
 		token = match_token(ptr, tokens, args);
 		switch (token) {
 		case Opt_fd_dev_name:
+			arg_p = match_strdup(&args[0]);
+			if (!arg_p) {
+				ret = -ENOMEM;
+				break;
+			}
 			snprintf(fd_dev->fd_dev_name, FD_MAX_DEV_NAME,
-					"%s", match_strdup(&args[0]));
+					"%s", arg_p);
+			kfree(arg_p);
 			printk(KERN_INFO "FILEIO: Referencing Path: %s\n",
 					fd_dev->fd_dev_name);
 			fd_dev->fbd_flags |= FBDF_HAS_PATH;
 			break;
 		case Opt_fd_dev_size:
 			arg_p = match_strdup(&args[0]);
+			if (!arg_p) {
+				ret = -ENOMEM;
+				break;
+			}
 			ret = strict_strtoull(arg_p, 0, &fd_dev->fd_dev_size);
+			kfree(arg_p);
 			if (ret < 0) {
 				printk(KERN_ERR "strict_strtoull() failed for"
 						" fd_dev_size=\n");
-- 
1.7.3.5

[PATCH 07/24] target/iblock: Fix memory leak in iblock_set_configfs_dev_params

[Nicholas A. Bellinger]

From: Nicholas Bellinger <nab@linux-iscsi.org>

The match_strdup() allocation for Opt_udev_path needs to be released
after usage.

Reported-off-by: Jesper Juhl <jj@chaosbits.net>
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
(cherry picked from commit 7950e3cfa54b3bf11eecf6c0e47df3a5712334d1)
---
 drivers/target/target_core_iblock.c |   13 +++++++++----
 1 files changed, 9 insertions(+), 4 deletions(-)

diff --git a/drivers/target/target_core_iblock.c b/drivers/target/target_core_iblock.c
index 67f0c09..422187b 100644
--- a/drivers/target/target_core_iblock.c
+++ b/drivers/target/target_core_iblock.c
@@ -469,7 +469,7 @@ static ssize_t iblock_set_configfs_dev_params(struct se_hba *hba,
 					       const char *page, ssize_t count)
 {
 	struct iblock_dev *ib_dev = se_dev->se_dev_su_ptr;
-	char *orig, *ptr, *opts;
+	char *orig, *ptr, *arg_p, *opts;
 	substring_t args[MAX_OPT_ARGS];
 	int ret = 0, arg, token;
 
@@ -492,9 +492,14 @@ static ssize_t iblock_set_configfs_dev_params(struct se_hba *hba,
 				ret = -EEXIST;
 				goto out;
 			}
-
-			ret = snprintf(ib_dev->ibd_udev_path, SE_UDEV_PATH_LEN,
-				"%s", match_strdup(&args[0]));
+			arg_p = match_strdup(&args[0]);
+			if (!arg_p) {
+				ret = -ENOMEM;
+				break;
+			}
+			snprintf(ib_dev->ibd_udev_path, SE_UDEV_PATH_LEN,
+					"%s", arg_p);
+			kfree(arg_p);
 			printk(KERN_INFO "IBLOCK: Referencing UDEV path: %s\n",
 					ib_dev->ibd_udev_path);
 			ib_dev->ibd_flags |= IBDF_HAS_UDEV_PATH;
-- 
1.7.3.5

[PATCH 08/24] target: Fix memory leaks in target_core_dev_pr_store_attr_res_aptpl_metadata

[Nicholas A. Bellinger]

From: Nicholas Bellinger <nab@linux-iscsi.org>

This patch adds missing kfree()'s for match_strdup() allocations for
Opt_initiator_fabric, Opt_initiator_node, Opt_initiator_sid, Opt_sa_res_key,
Opt_target_fabric, and Opt_target_node for the Persistent Reservations
Activate Persistence across Target Power Loss (APTPL=1) token parsing.

Reported-off-by: Jesper Juhl <jj@chaosbits.net>
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
(cherry picked from commit e26e844313a2cf996f78ba7378cab42078e200a2)
---
 drivers/target/target_core_configfs.c |   33 +++++++++++++++++++++++++++++++--
 1 files changed, 31 insertions(+), 2 deletions(-)

diff --git a/drivers/target/target_core_configfs.c b/drivers/target/target_core_configfs.c
index 2764510..656c4fa 100644
--- a/drivers/target/target_core_configfs.c
+++ b/drivers/target/target_core_configfs.c
@@ -1452,8 +1452,8 @@ static ssize_t target_core_dev_pr_store_attr_res_aptpl_metadata(
 	size_t count)
 {
 	struct se_device *dev;
-	unsigned char *i_fabric, *t_fabric, *i_port = NULL, *t_port = NULL;
-	unsigned char *isid = NULL;
+	unsigned char *i_fabric = NULL, *i_port = NULL, *isid = NULL;
+	unsigned char *t_fabric = NULL, *t_port = NULL;
 	char *orig, *ptr, *arg_p, *opts;
 	substring_t args[MAX_OPT_ARGS];
 	unsigned long long tmp_ll;
@@ -1489,9 +1489,17 @@ static ssize_t target_core_dev_pr_store_attr_res_aptpl_metadata(
 		switch (token) {
 		case Opt_initiator_fabric:
 			i_fabric = match_strdup(&args[0]);
+			if (!i_fabric) {
+				ret = -ENOMEM;
+				goto out;
+			}
 			break;
 		case Opt_initiator_node:
 			i_port = match_strdup(&args[0]);
+			if (!i_port) {
+				ret = -ENOMEM;
+				goto out;
+			}
 			if (strlen(i_port) > PR_APTPL_MAX_IPORT_LEN) {
 				printk(KERN_ERR "APTPL metadata initiator_node="
 					" exceeds PR_APTPL_MAX_IPORT_LEN: %d\n",
@@ -1502,6 +1510,10 @@ static ssize_t target_core_dev_pr_store_attr_res_aptpl_metadata(
 			break;
 		case Opt_initiator_sid:
 			isid = match_strdup(&args[0]);
+			if (!isid) {
+				ret = -ENOMEM;
+				goto out;
+			}
 			if (strlen(isid) > PR_REG_ISID_LEN) {
 				printk(KERN_ERR "APTPL metadata initiator_isid"
 					"= exceeds PR_REG_ISID_LEN: %d\n",
@@ -1512,6 +1524,10 @@ static ssize_t target_core_dev_pr_store_attr_res_aptpl_metadata(
 			break;
 		case Opt_sa_res_key:
 			arg_p = match_strdup(&args[0]);
+			if (!arg_p) {
+				ret = -ENOMEM;
+				goto out;
+			}
 			ret = strict_strtoull(arg_p, 0, &tmp_ll);
 			if (ret < 0) {
 				printk(KERN_ERR "strict_strtoull() failed for"
@@ -1548,9 +1564,17 @@ static ssize_t target_core_dev_pr_store_attr_res_aptpl_metadata(
 		 */
 		case Opt_target_fabric:
 			t_fabric = match_strdup(&args[0]);
+			if (!t_fabric) {
+				ret = -ENOMEM;
+				goto out;
+			}
 			break;
 		case Opt_target_node:
 			t_port = match_strdup(&args[0]);
+			if (!t_port) {
+				ret = -ENOMEM;
+				goto out;
+			}
 			if (strlen(t_port) > PR_APTPL_MAX_TPORT_LEN) {
 				printk(KERN_ERR "APTPL metadata target_node="
 					" exceeds PR_APTPL_MAX_TPORT_LEN: %d\n",
@@ -1593,6 +1617,11 @@ static ssize_t target_core_dev_pr_store_attr_res_aptpl_metadata(
 			i_port, isid, mapped_lun, t_port, tpgt, target_lun,
 			res_holder, all_tg_pt, type);
 out:
+	kfree(i_fabric);
+	kfree(i_port);
+	kfree(isid);
+	kfree(t_fabric);
+	kfree(t_port);
 	kfree(orig);
 	return (ret == 0) ? count : ret;
 }
-- 
1.7.3.5

[PATCH 09/24] target: Fix demo-mode MappedLUN shutdown UA/PR breakage

[Nicholas A. Bellinger]

From: Nicholas Bellinger <nab@linux-iscsi.org>

This patch fixes a bug in core_update_device_list_for_node() where individual
demo-mode generated MappedLUN's UA + Persistent Reservations metadata where being
leaked, instead of falling through and calling existing core_scsi3_ua_release_all()
and core_scsi3_free_pr_reg_from_nacl() at the end of core_update_device_list_for_node().

This bug would manifest itself with the following OOPs w/ TPG demo-mode endpoints
(tfo->tpg_check_demo_mode()=1), and PROUT REGISTER+RESERVE -> explict struct se_session
logout -> struct se_device shutdown:

[  697.021139] LIO_iblock used greatest stack depth: 2704 bytes left
[  702.235017] general protection fault: 0000 [#1] SMP
[  702.235074] last sysfs file: /sys/devices/virtual/net/lo/operstate
[  704.372695] CPU 0
[  704.372725] Modules linked in: crc32c target_core_stgt scsi_tgt target_core_pscsi target_core_file target_core_iblock target_core_mod configfs sr_mod cdrom sd_mod ata_piix mptspi mptscsih libata mptbase [last unloaded: iscsi_target_mod]
[  704.375442]
[  704.375563] Pid: 4964, comm: tcm_node Not tainted 2.6.37+ #1 440BX Desktop Reference Platform/VMware Virtual Platform
[  704.375912] RIP: 0010:[<ffffffffa00aaa16>]  [<ffffffffa00aaa16>] __core_scsi3_complete_pro_release+0x31/0x133 [target_core_mod]
[  704.376017] RSP: 0018:ffff88001e5ffcb8  EFLAGS: 00010296
[  704.376017] RAX: 6d32335b1b0a0d0a RBX: ffff88001d952cb0 RCX: 0000000000000015
[  704.376017] RDX: ffff88001b428000 RSI: ffff88001da5a4c0 RDI: ffff88001e5ffcd8
[  704.376017] RBP: ffff88001e5ffd28 R08: ffff88001e5ffcd8 R09: ffff88001d952080
[  704.377116] R10: ffff88001dfc5480 R11: ffff88001df8abb0 R12: ffff88001d952cb0
[  704.377319] R13: 0000000000000000 R14: ffff88001df8abb0 R15: ffff88001b428000
[  704.377521] FS:  00007f033d15c6e0(0000) GS:ffff88001fa00000(0000) knlGS:0000000000000000
[  704.377861] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[  704.378043] CR2: 00007fff09281510 CR3: 000000001e5db000 CR4: 00000000000006f0
[  704.378110] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  704.378110] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
[  704.378110] Process tcm_node (pid: 4964, threadinfo ffff88001e5fe000, task ffff88001d99c260)
[  704.378110] Stack:
[  704.378110]  ffffea0000678980 ffff88001da5a4c0 ffffea0000678980 ffff88001f402b00
[  704.378110]  ffff88001e5ffd08 ffffffff810ea236 ffff88001e5ffd18 0000000000000282
[  704.379772]  ffff88001d952080 ffff88001d952cb0 ffff88001d952cb0 ffff88001dc79010
[  704.380082] Call Trace:
[  704.380220]  [<ffffffff810ea236>] ? __slab_free+0x89/0x11c
[  704.380403]  [<ffffffffa00ab781>] core_scsi3_free_all_registrations+0x3e/0x157 [target_core_mod]
[  704.380479]  [<ffffffffa00a752b>] se_release_device_for_hba+0xa6/0xd8 [target_core_mod]
[  704.380479]  [<ffffffffa00a7598>] se_free_virtual_device+0x3b/0x45 [target_core_mod]
[  704.383750]  [<ffffffffa00a3177>] target_core_drop_subdev+0x13a/0x18d [target_core_mod]
[  704.384068]  [<ffffffffa00960db>] client_drop_item+0x25/0x31 [configfs]
[  704.384263]  [<ffffffffa00967b5>] configfs_rmdir+0x1a1/0x223 [configfs]
[  704.384459]  [<ffffffff810fa8cd>] vfs_rmdir+0x7e/0xd3
[  704.384631]  [<ffffffff810fc3be>] do_rmdir+0xa3/0xf4
[  704.384895]  [<ffffffff810eed15>] ? filp_close+0x67/0x72
[  704.386485]  [<ffffffff810fc446>] sys_rmdir+0x11/0x13
[  704.387893]  [<ffffffff81002a92>] system_call_fastpath+0x16/0x1b
[  704.388083] Code: 4c 8d 45 b0 41 56 49 89 d7 41 55 41 89 cd 41 54 b9 15 00 00 00 53 48 89 fb 48 83 ec 48 4c 89 c7 48 89 75 98 48 8b 86 28 01 00 00 <48> 8b 80 90 01 00 00 48 89 45 a0 31 c0 f3 aa c7 45 ac 00 00 00
[  704.388763] RIP  [<ffffffffa00aaa16>] __core_scsi3_complete_pro_release+0x31/0x133 [target_core_mod]
[  704.389142]  RSP <ffff88001e5ffcb8>
[  704.389572] ---[ end trace 2a3614f3cd6261a5 ]---

Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
---
 drivers/target/target_core_device.c |    8 ++++----
 1 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/target/target_core_device.c b/drivers/target/target_core_device.c
index d94933d..4c2bd9c 100644
--- a/drivers/target/target_core_device.c
+++ b/drivers/target/target_core_device.c
@@ -369,11 +369,11 @@ int core_update_device_list_for_node(
 		/*
 		 * deve->se_lun_acl will be NULL for demo-mode created LUNs
 		 * that have not been explictly concerted to MappedLUNs ->
-		 * struct se_lun_acl.
+		 * struct se_lun_acl, but we remove deve->alua_port_list from
+		 * port->sep_alua_list. This also means that active UAs and
+		 * NodeACL context specific PR metadata for demo-mode
+		 * MappedLUN *deve will be released below..
 		 */
-		if (!(deve->se_lun_acl))
-			return 0;
-
 		spin_lock_bh(&port->sep_alua_lock);
 		list_del(&deve->alua_port_list);
 		spin_unlock_bh(&port->sep_alua_lock);
-- 
1.7.3.5

[PATCH 10/24] target: Release left-over demo-mode NodeACLs w/ tfo->tpg_check_demo_mode_cache()=1

[Nicholas A. Bellinger]

From: Nicholas Bellinger <nab@linux-iscsi.org>

This patch adds the missing struct se_portal_groups->acl_node_list walk & release
following target_core_transport.c:transport_deregister_session() logic with
tfo->tpg_check_demo_mode_cache()=1 mode for left-over demo-mode struct se_node_acl
dynamic allocations during the final core_tpg_deregister() shutdown sequence.

As with transport_deregister_session() w/ tfo->tpg_check_demo_mode_cache()=0, it
waits for any outstanding PR and MIBs references to be relinquished, and calls
core_free_device_list_for_node() to release individual demo-mode MappedLUNs from
struct se_node_acl->device_list[] via core_update_device_list_for_node().

Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
(cherry picked from commit 135c3f59ed66eb1a54dbbf9eca5eeade272b5259)
---
 drivers/target/target_core_tpg.c |   22 ++++++++++++++++++++++
 1 files changed, 22 insertions(+), 0 deletions(-)

diff --git a/drivers/target/target_core_tpg.c b/drivers/target/target_core_tpg.c
index abfa81a..d15deaf 100644
--- a/drivers/target/target_core_tpg.c
+++ b/drivers/target/target_core_tpg.c
@@ -701,6 +701,8 @@ EXPORT_SYMBOL(core_tpg_register);
 
 int core_tpg_deregister(struct se_portal_group *se_tpg)
 {
+	struct se_node_acl *nacl, *nacl_tmp;
+
 	printk(KERN_INFO "TARGET_CORE[%s]: Deallocating %s struct se_portal_group"
 		" for endpoint: %s Portal Tag %u\n",
 		(se_tpg->se_tpg_type == TRANSPORT_TPG_TYPE_NORMAL) ?
@@ -714,6 +716,26 @@ int core_tpg_deregister(struct se_portal_group *se_tpg)
 
 	while (atomic_read(&se_tpg->tpg_pr_ref_count) != 0)
 		cpu_relax();
+	/*
+	 * Release any remaining demo-mode generated se_node_acl that have
+	 * not been released because of TFO->tpg_check_demo_mode_cache() == 1
+	 * in transport_deregister_session().
+	 */
+	spin_lock_bh(&se_tpg->acl_node_lock);
+	list_for_each_entry_safe(nacl, nacl_tmp, &se_tpg->acl_node_list,
+			acl_list) {
+		list_del(&nacl->acl_list);
+		se_tpg->num_node_acls--;
+		spin_unlock_bh(&se_tpg->acl_node_lock);
+
+		core_tpg_wait_for_nacl_pr_ref(nacl);
+		core_tpg_wait_for_mib_ref(nacl);
+		core_free_device_list_for_node(nacl, se_tpg);
+		TPG_TFO(se_tpg)->tpg_release_fabric_acl(se_tpg, nacl);
+
+		spin_lock_bh(&se_tpg->acl_node_lock);
+	}
+	spin_unlock_bh(&se_tpg->acl_node_lock);
 
 	if (se_tpg->se_tpg_type == TRANSPORT_TPG_TYPE_NORMAL)
 		core_tpg_release_virtual_lun0(se_tpg);
-- 
1.7.3.5

[PATCH 11/24] target: tcm_mod_builder.py generated Makefile cleanups

[Nicholas A. Bellinger]

From: Nicholas Bellinger <nab@linux-iscsi.org>

This patch converts the tcm_mod_builder.py generation script to
create a new drivers/target/$TCM_FABRIC_MOD/Makefile and update
drivers/target/Makefile, instead of creating+updating a 'Kbuild'
filename.

It also removes the remaining EXTRA_CFLAGS includes from
tcm_mod_build_kbuild(), and converts fabric module generated .c
code to us ""-style includes for $FABRIC_MOD_[base,fabric].h

Reported-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
---
 Documentation/target/tcm_mod_builder.py |   17 ++++++++---------
 1 files changed, 8 insertions(+), 9 deletions(-)

diff --git a/Documentation/target/tcm_mod_builder.py b/Documentation/target/tcm_mod_builder.py
index dbeb8a0..89af6c7 100755
--- a/Documentation/target/tcm_mod_builder.py
+++ b/Documentation/target/tcm_mod_builder.py
@@ -239,8 +239,8 @@ def tcm_mod_build_configfs(proto_ident, fabric_mod_dir_var, fabric_mod_name):
 	buf += "#include <target/target_core_configfs.h>\n"
 	buf += "#include <target/target_core_base.h>\n"
 	buf += "#include <target/configfs_macros.h>\n\n"
-	buf += "#include <" + fabric_mod_name + "_base.h>\n"
-	buf += "#include <" + fabric_mod_name + "_fabric.h>\n\n"
+	buf += "#include \"" + fabric_mod_name + "_base.h\"\n"
+	buf += "#include \"" + fabric_mod_name + "_fabric.h\"\n\n"
 
 	buf += "/* Local pointer to allocated TCM configfs fabric module */\n"
 	buf += "struct target_fabric_configfs *" + fabric_mod_name + "_fabric_configfs;\n\n"
@@ -583,9 +583,9 @@ def tcm_mod_dump_fabric_ops(proto_ident, fabric_mod_dir_var, fabric_mod_name):
 	buf += "#include <target/target_core_fabric_lib.h>\n"
 	buf += "#include <target/target_core_device.h>\n"
 	buf += "#include <target/target_core_tpg.h>\n"
-	buf += "#include <target/target_core_configfs.h>\n"
-	buf += "#include <" + fabric_mod_name + "_base.h>\n"
-	buf += "#include <" + fabric_mod_name + "_fabric.h>\n\n"
+	buf += "#include <target/target_core_configfs.h>\n\n"
+	buf += "#include \"" + fabric_mod_name + "_base.h\"\n"
+	buf += "#include \"" + fabric_mod_name + "_fabric.h\"\n\n"
 
 	buf += "int " + fabric_mod_name + "_check_true(struct se_portal_group *se_tpg)\n"
 	buf += "{\n"
@@ -973,14 +973,13 @@ def tcm_mod_dump_fabric_ops(proto_ident, fabric_mod_dir_var, fabric_mod_name):
 def tcm_mod_build_kbuild(fabric_mod_dir_var, fabric_mod_name):
 
 	buf = ""
-	f = fabric_mod_dir_var + "/Kbuild"
+	f = fabric_mod_dir_var + "/Makefile"
 	print "Writing file: " + f
 
 	p = open(f, 'w')
 	if not p:
 		tcm_mod_err("Unable to open file: " + f)
 
-	buf = "EXTRA_CFLAGS += -I$(srctree)/drivers/target/ -I$(srctree)/include/ -I$(srctree)/drivers/scsi/ -I$(srctree)/include/scsi/ -I$(srctree)/drivers/target/" + fabric_mod_name + "\n\n"
 	buf += fabric_mod_name + "-objs			:= " + fabric_mod_name + "_fabric.o \\\n"
 	buf += "					   " + fabric_mod_name + "_configfs.o\n"
 	buf += "obj-$(CONFIG_" + fabric_mod_name.upper() + ")		+= " + fabric_mod_name + ".o\n"
@@ -1018,7 +1017,7 @@ def tcm_mod_build_kconfig(fabric_mod_dir_var, fabric_mod_name):
 
 def tcm_mod_add_kbuild(tcm_dir, fabric_mod_name):
 	buf = "obj-$(CONFIG_" + fabric_mod_name.upper() + ")	+= " + fabric_mod_name.lower() + "/\n"
-	kbuild = tcm_dir + "/drivers/target/Kbuild"
+	kbuild = tcm_dir + "/drivers/target/Makefile"
 
 	f = open(kbuild, 'a')
 	f.write(buf)
@@ -1064,7 +1063,7 @@ def main(modname, proto_ident):
 	tcm_mod_build_kbuild(fabric_mod_dir, fabric_mod_name)
 	tcm_mod_build_kconfig(fabric_mod_dir, fabric_mod_name)
 
-	input = raw_input("Would you like to add " + fabric_mod_name + "to drivers/target/Kbuild..? [yes,no]: ")
+	input = raw_input("Would you like to add " + fabric_mod_name + "to drivers/target/Makefile..? [yes,no]: ")
 	if input == "yes" or input == "y":
 		tcm_mod_add_kbuild(tcm_dir, fabric_mod_name)
 
-- 
1.7.3.5

[PATCH 12/24] target: do not include target_core_mib.h under include/target

[Nicholas A. Bellinger]

From: Christoph Hellwig <hch@lst.de>

Headers under include/ should not include headers that require a specific
include path.  Fix this by moving the defintion of scsi_port_stats to
target_core_base.h, and including target_core_mib.h directly where needed.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
(cherry picked from commit 0080d7dd72627a04d704196dd06f01af2499061e)
---
 drivers/target/target_core_configfs.c  |    1 +
 drivers/target/target_core_hba.c       |    1 +
 drivers/target/target_core_mib.h       |    7 -------
 drivers/target/target_core_tpg.c       |    1 +
 drivers/target/target_core_transport.c |    1 +
 include/target/target_core_base.h      |    8 +++++++-
 6 files changed, 11 insertions(+), 8 deletions(-)

diff --git a/drivers/target/target_core_configfs.c b/drivers/target/target_core_configfs.c
index 656c4fa..96b87da 100644
--- a/drivers/target/target_core_configfs.c
+++ b/drivers/target/target_core_configfs.c
@@ -51,6 +51,7 @@
 #include "target_core_hba.h"
 #include "target_core_pr.h"
 #include "target_core_rd.h"
+#include "target_core_mib.h"
 
 static struct list_head g_tf_list;
 static struct mutex g_tf_lock;
diff --git a/drivers/target/target_core_hba.c b/drivers/target/target_core_hba.c
index 4bbe820..29dc3fa 100644
--- a/drivers/target/target_core_hba.c
+++ b/drivers/target/target_core_hba.c
@@ -43,6 +43,7 @@
 #include <target/target_core_transport.h>
 
 #include "target_core_hba.h"
+#include "target_core_mib.h"
 
 static LIST_HEAD(subsystem_list);
 static DEFINE_MUTEX(subsystem_mutex);
diff --git a/drivers/target/target_core_mib.h b/drivers/target/target_core_mib.h
index 2772046..5172674 100644
--- a/drivers/target/target_core_mib.h
+++ b/drivers/target/target_core_mib.h
@@ -13,13 +13,6 @@ struct scsi_index_table {
 	u32 		scsi_mib_index[SCSI_INDEX_TYPE_MAX];
 } ____cacheline_aligned;
 
-/* SCSI Port stats */
-struct scsi_port_stats {
-	u64	cmd_pdus;
-	u64	tx_data_octets;
-	u64	rx_data_octets;
-} ____cacheline_aligned;
-
 extern int init_scsi_target_mib(void);
 extern void remove_scsi_target_mib(void);
 extern void init_scsi_index_table(void);
diff --git a/drivers/target/target_core_tpg.c b/drivers/target/target_core_tpg.c
index d15deaf..1f69be1 100644
--- a/drivers/target/target_core_tpg.c
+++ b/drivers/target/target_core_tpg.c
@@ -45,6 +45,7 @@
 #include <target/target_core_fabric_ops.h>
 
 #include "target_core_hba.h"
+#include "target_core_mib.h"
 
 /*	core_clear_initiator_node_from_tpg():
  *
diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c
index 28b6292..8cb628b 100644
--- a/drivers/target/target_core_transport.c
+++ b/drivers/target/target_core_transport.c
@@ -58,6 +58,7 @@
 #include "target_core_pr.h"
 #include "target_core_scdb.h"
 #include "target_core_ua.h"
+#include "target_core_mib.h"
 
 /* #define DEBUG_CDB_HANDLER */
 #ifdef DEBUG_CDB_HANDLER
diff --git a/include/target/target_core_base.h b/include/target/target_core_base.h
index 764177b..c071907 100644
--- a/include/target/target_core_base.h
+++ b/include/target/target_core_base.h
@@ -8,7 +8,6 @@
 #include <scsi/scsi_cmnd.h>
 #include <net/sock.h>
 #include <net/tcp.h>
-#include "target_core_mib.h"
 
 #define TARGET_CORE_MOD_VERSION		"v4.0.0-rc6"
 #define SHUTDOWN_SIGS	(sigmask(SIGKILL)|sigmask(SIGINT)|sigmask(SIGABRT))
@@ -175,6 +174,13 @@ struct se_obj {
 	atomic_t obj_access_count;
 } ____cacheline_aligned;
 
+/* SCSI Port stats */
+struct scsi_port_stats {
+	u64	cmd_pdus;
+	u64	tx_data_octets;
+	u64	rx_data_octets;
+} ____cacheline_aligned;
+
 /*
  * Used by TCM Core internally to signal if ALUA emulation is enabled or
  * disabled, or running in with TCM/pSCSI passthrough mode
-- 
1.7.3.5

[PATCH 13/24] target: remove EXTRA_CFLAGS

[Nicholas A. Bellinger]

From: Christoph Hellwig <hch@lst.de>

Add the current directory is superflous in general, and no includes in
drivers/scsi are needed either.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
(cherry picked from commit c524edaf2c19a5c1caa06a3cba97cdb043eb165c)
---
 drivers/target/Makefile |    1 -
 1 files changed, 0 insertions(+), 1 deletions(-)

diff --git a/drivers/target/Makefile b/drivers/target/Makefile
index 5cfd708..ab3b40f 100644
--- a/drivers/target/Makefile
+++ b/drivers/target/Makefile
@@ -1,4 +1,3 @@
-EXTRA_CFLAGS += -I$(srctree)/drivers/target/ -I$(srctree)/drivers/scsi/
 
 target_core_mod-y		:= target_core_configfs.o \
 				   target_core_device.o \
-- 
1.7.3.5

[PATCH 14/24] target: Call proc_mkdir + remove_proc_entry with NULL parameter

[Nicholas A. Bellinger]

From: Nicholas Bellinger <nab@linux-iscsi.org>

This patch makes proc_mkdir() and remove_proc_entry() use a NULL
parameter to fix the following sparse warning:

CHECK   drivers/target/target_core_configfs.c
drivers/target/target_core_configfs.c:3131:54: warning: Using plain integer as NULL pointer
drivers/target/target_core_configfs.c:3145:50: warning: Using plain integer as NULL pointer
drivers/target/target_core_configfs.c:3212:42: warning: Using plain integer as NULL pointer

Reported-by: Fubo Chen <fubo.chen@gmail.com>
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
(cherry picked from commit d83fca37fa4a6c2bcb2806800f221528a76fc080)
---
 drivers/target/target_core_configfs.c |    6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/target/target_core_configfs.c b/drivers/target/target_core_configfs.c
index 96b87da..10741e3 100644
--- a/drivers/target/target_core_configfs.c
+++ b/drivers/target/target_core_configfs.c
@@ -3158,7 +3158,7 @@ static int target_core_init_configfs(void)
 	if (core_dev_setup_virtual_lun0() < 0)
 		goto out;
 
-	scsi_target_proc = proc_mkdir("scsi_target", 0);
+	scsi_target_proc = proc_mkdir("scsi_target", NULL);
 	if (!(scsi_target_proc)) {
 		printk(KERN_ERR "proc_mkdir(scsi_target, 0) failed\n");
 		goto out;
@@ -3172,7 +3172,7 @@ static int target_core_init_configfs(void)
 out:
 	configfs_unregister_subsystem(subsys);
 	if (scsi_target_proc)
-		remove_proc_entry("scsi_target", 0);
+		remove_proc_entry("scsi_target", NULL);
 	core_dev_release_virtual_lun0();
 	rd_module_exit();
 out_global:
@@ -3239,7 +3239,7 @@ static void target_core_exit_configfs(void)
 			" Infrastructure\n");
 
 	remove_scsi_target_mib();
-	remove_proc_entry("scsi_target", 0);
+	remove_proc_entry("scsi_target", NULL);
 	core_dev_release_virtual_lun0();
 	rd_module_exit();
 	release_se_global();
-- 
1.7.3.5

[PATCH 15/24] target: Convert backend ->create_virtdevice() call to return ERR_PTR

[Nicholas A. Bellinger]

From: Nicholas Bellinger <nab@linux-iscsi.org>

This patch converts the target_core_store_dev_enable() -> struct
se_subsystem_api->create_virtdevice() call to return proper ERR_PTR values
back up to configfs logic during backend dependent struct se_device ENABLE
exception conditions.

Along with the change to target_core_configfs.c, this includes converting IBLOCK,
FILEIO, pSCSI, and RAMDISK_* backend subsystem plugins to obtain upper level
PTR_ERR return codes (where available), and return via ERR_PTR during a
*_create_virtdev() failure.

Reported-by: Fubo Chen <fubo.chen@gmail.com>
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
(cherry picked from commit 5a7e5c209ee7a26f66a3606a8ebc12c48f495d7b)
---
 drivers/target/target_core_configfs.c |    4 +++-
 drivers/target/target_core_file.c     |   13 +++++++++----
 drivers/target/target_core_iblock.c   |   15 ++++++++-------
 drivers/target/target_core_pscsi.c    |   18 +++++++++---------
 drivers/target/target_core_rd.c       |    8 +++++---
 5 files changed, 34 insertions(+), 24 deletions(-)

diff --git a/drivers/target/target_core_configfs.c b/drivers/target/target_core_configfs.c
index 10741e3..99e07ba 100644
--- a/drivers/target/target_core_configfs.c
+++ b/drivers/target/target_core_configfs.c
@@ -1829,7 +1829,9 @@ static ssize_t target_core_store_dev_enable(
 		return -EINVAL;
 
 	dev = t->create_virtdevice(hba, se_dev, se_dev->se_dev_su_ptr);
-	if (!(dev) || IS_ERR(dev))
+	if (IS_ERR(dev))
+		return PTR_ERR(dev);
+	else if (!dev)
 		return -EINVAL;
 
 	se_dev->se_dev_ptr = dev;
diff --git a/drivers/target/target_core_file.c b/drivers/target/target_core_file.c
index 676a010..ae2bf71 100644
--- a/drivers/target/target_core_file.c
+++ b/drivers/target/target_core_file.c
@@ -135,7 +135,7 @@ static struct se_device *fd_create_virtdevice(
 	mm_segment_t old_fs;
 	struct file *file;
 	struct inode *inode = NULL;
-	int dev_flags = 0, flags;
+	int dev_flags = 0, flags, ret = -EINVAL;
 
 	memset(&dev_limits, 0, sizeof(struct se_dev_limits));
 
@@ -147,6 +147,7 @@ static struct se_device *fd_create_virtdevice(
 	if (IS_ERR(dev_p)) {
 		printk(KERN_ERR "getname(%s) failed: %lu\n",
 			fd_dev->fd_dev_name, IS_ERR(dev_p));
+		ret = PTR_ERR(dev_p);
 		goto fail;
 	}
 #if 0
@@ -166,8 +167,12 @@ static struct se_device *fd_create_virtdevice(
 		flags |= O_SYNC;
 
 	file = filp_open(dev_p, flags, 0600);
-
-	if (IS_ERR(file) || !file || !file->f_dentry) {
+	if (IS_ERR(file)) {
+		printk(KERN_ERR "filp_open(%s) failed\n", dev_p);
+		ret = PTR_ERR(file);
+		goto fail;
+	}
+	if (!file || !file->f_dentry) {
 		printk(KERN_ERR "filp_open(%s) failed\n", dev_p);
 		goto fail;
 	}
@@ -242,7 +247,7 @@ fail:
 		fd_dev->fd_file = NULL;
 	}
 	putname(dev_p);
-	return NULL;
+	return ERR_PTR(ret);
 }
 
 /*	fd_free_device(): (Part of se_subsystem_api_t template)
diff --git a/drivers/target/target_core_iblock.c b/drivers/target/target_core_iblock.c
index 422187b..9140be3 100644
--- a/drivers/target/target_core_iblock.c
+++ b/drivers/target/target_core_iblock.c
@@ -130,10 +130,11 @@ static struct se_device *iblock_create_virtdevice(
 	struct request_queue *q;
 	struct queue_limits *limits;
 	u32 dev_flags = 0;
+	int ret = -EINVAL;
 
 	if (!(ib_dev)) {
 		printk(KERN_ERR "Unable to locate struct iblock_dev parameter\n");
-		return 0;
+		return ERR_PTR(ret);
 	}
 	memset(&dev_limits, 0, sizeof(struct se_dev_limits));
 	/*
@@ -142,7 +143,7 @@ static struct se_device *iblock_create_virtdevice(
 	ib_dev->ibd_bio_set = bioset_create(32, 64);
 	if (!(ib_dev->ibd_bio_set)) {
 		printk(KERN_ERR "IBLOCK: Unable to create bioset()\n");
-		return 0;
+		return ERR_PTR(-ENOMEM);
 	}
 	printk(KERN_INFO "IBLOCK: Created bio_set()\n");
 	/*
@@ -154,8 +155,10 @@ static struct se_device *iblock_create_virtdevice(
 
 	bd = blkdev_get_by_path(ib_dev->ibd_udev_path,
 				FMODE_WRITE|FMODE_READ|FMODE_EXCL, ib_dev);
-	if (IS_ERR(bd))
+	if (IS_ERR(bd)) {
+		ret = PTR_ERR(bd);
 		goto failed;
+	}
 	/*
 	 * Setup the local scope queue_limits from struct request_queue->limits
 	 * to pass into transport_add_device_to_core_hba() as struct se_dev_limits.
@@ -185,9 +188,7 @@ static struct se_device *iblock_create_virtdevice(
 	 * the QUEUE_FLAG_DISCARD bit for UNMAP/WRITE_SAME in SCSI + TRIM
 	 * in ATA and we need to set TPE=1
 	 */
-	if (blk_queue_discard(bdev_get_queue(bd))) {
-		struct request_queue *q = bdev_get_queue(bd);
-
+	if (blk_queue_discard(q)) {
 		DEV_ATTRIB(dev)->max_unmap_lba_count =
 				q->limits.max_discard_sectors;
 		/*
@@ -213,7 +214,7 @@ failed:
 	ib_dev->ibd_bd = NULL;
 	ib_dev->ibd_major = 0;
 	ib_dev->ibd_minor = 0;
-	return NULL;
+	return ERR_PTR(ret);
 }
 
 static void iblock_free_device(void *p)
diff --git a/drivers/target/target_core_pscsi.c b/drivers/target/target_core_pscsi.c
index f596cb7..e795f7d 100644
--- a/drivers/target/target_core_pscsi.c
+++ b/drivers/target/target_core_pscsi.c
@@ -556,7 +556,7 @@ static struct se_device *pscsi_create_virtdevice(
 	if (!(pdv)) {
 		printk(KERN_ERR "Unable to locate struct pscsi_dev_virt"
 				" parameter\n");
-		return NULL;
+		return ERR_PTR(-EINVAL);
 	}
 	/*
 	 * If not running in PHV_LLD_SCSI_HOST_NO mode, locate the
@@ -566,7 +566,7 @@ static struct se_device *pscsi_create_virtdevice(
 		if (phv->phv_mode == PHV_LLD_SCSI_HOST_NO) {
 			printk(KERN_ERR "pSCSI: Unable to locate struct"
 				" Scsi_Host for PHV_LLD_SCSI_HOST_NO\n");
-			return NULL;
+			return ERR_PTR(-ENODEV);
 		}
 		/*
 		 * For the newer PHV_VIRUTAL_HOST_ID struct scsi_device
@@ -575,7 +575,7 @@ static struct se_device *pscsi_create_virtdevice(
 		if (!(se_dev->su_dev_flags & SDF_USING_UDEV_PATH)) {
 			printk(KERN_ERR "pSCSI: udev_path attribute has not"
 				" been set before ENABLE=1\n");
-			return NULL;
+			return ERR_PTR(-EINVAL);
 		}
 		/*
 		 * If no scsi_host_id= was passed for PHV_VIRUTAL_HOST_ID,
@@ -588,12 +588,12 @@ static struct se_device *pscsi_create_virtdevice(
 				printk(KERN_ERR "pSCSI: Unable to set hba_mode"
 					" with active devices\n");
 				spin_unlock(&hba->device_lock);
-				return NULL;
+				return ERR_PTR(-EEXIST);
 			}
 			spin_unlock(&hba->device_lock);
 
 			if (pscsi_pmode_enable_hba(hba, 1) != 1)
-				return NULL;
+				return ERR_PTR(-ENODEV);
 
 			legacy_mode_enable = 1;
 			hba->hba_flags |= HBA_FLAGS_PSCSI_MODE;
@@ -603,14 +603,14 @@ static struct se_device *pscsi_create_virtdevice(
 			if (!(sh)) {
 				printk(KERN_ERR "pSCSI: Unable to locate"
 					" pdv_host_id: %d\n", pdv->pdv_host_id);
-				return NULL;
+				return ERR_PTR(-ENODEV);
 			}
 		}
 	} else {
 		if (phv->phv_mode == PHV_VIRUTAL_HOST_ID) {
 			printk(KERN_ERR "pSCSI: PHV_VIRUTAL_HOST_ID set while"
 				" struct Scsi_Host exists\n");
-			return NULL;
+			return ERR_PTR(-EEXIST);
 		}
 	}
 
@@ -645,7 +645,7 @@ static struct se_device *pscsi_create_virtdevice(
 				hba->hba_flags &= ~HBA_FLAGS_PSCSI_MODE;
 			}
 			pdv->pdv_sd = NULL;
-			return NULL;
+			return ERR_PTR(-ENODEV);
 		}
 		return dev;
 	}
@@ -661,7 +661,7 @@ static struct se_device *pscsi_create_virtdevice(
 		hba->hba_flags &= ~HBA_FLAGS_PSCSI_MODE;
 	}
 
-	return NULL;
+	return ERR_PTR(-ENODEV);
 }
 
 /*	pscsi_free_device(): (Part of se_subsystem_api_t template)
diff --git a/drivers/target/target_core_rd.c b/drivers/target/target_core_rd.c
index 979aebf..0d0a583 100644
--- a/drivers/target/target_core_rd.c
+++ b/drivers/target/target_core_rd.c
@@ -254,13 +254,15 @@ static struct se_device *rd_create_virtdevice(
 	struct se_dev_limits dev_limits;
 	struct rd_dev *rd_dev = p;
 	struct rd_host *rd_host = hba->hba_ptr;
-	int dev_flags = 0;
+	int dev_flags = 0, ret = -EINVAL;
 	char prod[16], rev[4];
 
 	memset(&dev_limits, 0, sizeof(struct se_dev_limits));
 
-	if (rd_build_device_space(rd_dev) < 0)
+	if (rd_build_device_space(rd_dev) < 0) {
+		ret = -ENOMEM;
 		goto fail;
+	}
 
 	snprintf(prod, 16, "RAMDISK-%s", (rd_dev->rd_direct) ? "DR" : "MCP");
 	snprintf(rev, 4, "%s", (rd_dev->rd_direct) ? RD_DR_VERSION :
@@ -293,7 +295,7 @@ static struct se_device *rd_create_virtdevice(
 
 fail:
 	rd_release_device_space(rd_dev);
-	return NULL;
+	return ERR_PTR(ret);
 }
 
 static struct se_device *rd_DIRECT_create_virtdevice(
-- 
1.7.3.5

[PATCH 16/24] target: Drop nacl->device_list_lock on core_update_device_list_for_node failure

[Nicholas A. Bellinger]

From: Fubo Chen <fubo.chen@gmail.com>

The struct se_node_acl->device_list_lock needs to be released if either
sanity check for struct se_dev_entry->se_lun_acl or deve->se_lun fails.

Signed-off-by: Fubo Chen <fubo.chen@gmail.com>
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
(cherry picked from commit c0c6417c767e8b1214c5ca5e13fe6d3cf8f6e659)
---
 drivers/target/target_core_device.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/drivers/target/target_core_device.c b/drivers/target/target_core_device.c
index 4c2bd9c..95dfe3a 100644
--- a/drivers/target/target_core_device.c
+++ b/drivers/target/target_core_device.c
@@ -391,12 +391,14 @@ int core_update_device_list_for_node(
 				printk(KERN_ERR "struct se_dev_entry->se_lun_acl"
 					" already set for demo mode -> explict"
 					" LUN ACL transition\n");
+				spin_unlock_irq(&nacl->device_list_lock);
 				return -1;
 			}
 			if (deve->se_lun != lun) {
 				printk(KERN_ERR "struct se_dev_entry->se_lun does"
 					" match passed struct se_lun for demo mode"
 					" -> explict LUN ACL transition\n");
+				spin_unlock_irq(&nacl->device_list_lock);
 				return -1;
 			}
 			deve->se_lun_acl = lun_acl;
-- 
1.7.3.5

[PATCH 17/24] target: Remove unnecessary hba_dev_list walk + release from core_delete_hba

[Nicholas A. Bellinger]

From: Fubo Chen <fubo.chen@gmail.com>

This patch removes a legacy struct se_hba->hba_dev_list -> se_release_device_for_hba()
list walk in core_delete_hba(), which is no longer required while using configfs
VFS level parent/child struct config_group dependency referencing.  The reason
is because any struct se_hba->hba_dev_list-> struct se_device members are going
to have to be released via:

	rmdir /sys/kernel/config/target/core/$HBA/*

before rmdir release of struct se_hba via target_core_configfs.c:
target_core_call_delhbafromtarget() -> core_delete_hba()

	rmdir /sys/kernel/config/target/core/$HBA

to release struct se_hba in core_delete_hba().

Reported-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Reported-by: Fubo Chen <fubo.chen@gmail.com>
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
---
 drivers/target/target_core_device.c |    2 ++
 drivers/target/target_core_hba.c    |   15 ++-------------
 2 files changed, 4 insertions(+), 13 deletions(-)

diff --git a/drivers/target/target_core_device.c b/drivers/target/target_core_device.c
index 95dfe3a..02b835f 100644
--- a/drivers/target/target_core_device.c
+++ b/drivers/target/target_core_device.c
@@ -796,6 +796,8 @@ void se_clear_dev_ports(struct se_device *dev)
 		spin_lock(&lun->lun_sep_lock);
 		if (lun->lun_se_dev == NULL) {
 			spin_unlock(&lun->lun_sep_lock);
+			spin_lock(&hba->device_lock);
+			spin_lock(&dev->se_port_lock);
 			continue;
 		}
 		spin_unlock(&lun->lun_sep_lock);
diff --git a/drivers/target/target_core_hba.c b/drivers/target/target_core_hba.c
index 29dc3fa..cc8fa05 100644
--- a/drivers/target/target_core_hba.c
+++ b/drivers/target/target_core_hba.c
@@ -154,19 +154,8 @@ out_free_hba:
 int
 core_delete_hba(struct se_hba *hba)
 {
-	struct se_device *dev, *dev_tmp;
-
-	spin_lock(&hba->device_lock);
-	list_for_each_entry_safe(dev, dev_tmp, &hba->hba_dev_list, dev_list) {
-
-		se_clear_dev_ports(dev);
-		spin_unlock(&hba->device_lock);
-
-		se_release_device_for_hba(dev);
-
-		spin_lock(&hba->device_lock);
-	}
-	spin_unlock(&hba->device_lock);
+	if (!list_empty(&hba->hba_dev_list))
+		dump_stack();
 
 	hba->transport->detach_hba(hba);
 
-- 
1.7.3.5

[PATCH 18/24] target: Remove unnecessary se_clear_dev_ports legacy code

[Nicholas A. Bellinger]

From: Nicholas Bellinger <nab@linux-iscsi.org>

This patch removes the legacy se_clear_dev_ports() function, which is
left-over pre-configfs shutdown logic for when se_free_virtual_device()
was responsible for walking struct se_device->dev_sep_list and calling
core_dev_del_lun() for each individual active struct se_port->se_lun.

The reason this can be removed is because all struct se_device->dev_sep_list
-> struct se_port communication is done via configfs symlinks, which
means that an target fabric module's endpoints containg active struct
se_port(s) will have to be released via target_core_fabric_configfs.c:
target_fabric_port_unlink() via:

	unlink /sys/kernel/config/target/$FABRIC_MOD/$ENDPOINT/tpgt_$TPGT/lun/lun_$LUN_ID/<symlink>

before rmdir release of struct se_device in target_core_configfs.c:
target_core_drop_subdev() -> se_free_virtual_device() can happen via:

	rmdir /sys/kernel/config/target/core/$HBA/*

to release struct se_subsystem_dev in target_core_drop_subdev()

Reported-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
(cherry picked from commit 164416680c9715f9aac9afa0c2cf809efb710e85)
---
 drivers/target/target_core_device.c |   41 +---------------------------------
 1 files changed, 2 insertions(+), 39 deletions(-)

diff --git a/drivers/target/target_core_device.c b/drivers/target/target_core_device.c
index 02b835f..ec7f582 100644
--- a/drivers/target/target_core_device.c
+++ b/drivers/target/target_core_device.c
@@ -776,51 +776,14 @@ void se_release_vpd_for_dev(struct se_device *dev)
 	return;
 }
 
-/*
- * Called with struct se_hba->device_lock held.
- */
-void se_clear_dev_ports(struct se_device *dev)
-{
-	struct se_hba *hba = dev->se_hba;
-	struct se_lun *lun;
-	struct se_portal_group *tpg;
-	struct se_port *sep, *sep_tmp;
-
-	spin_lock(&dev->se_port_lock);
-	list_for_each_entry_safe(sep, sep_tmp, &dev->dev_sep_list, sep_list) {
-		spin_unlock(&dev->se_port_lock);
-		spin_unlock(&hba->device_lock);
-
-		lun = sep->sep_lun;
-		tpg = sep->sep_tpg;
-		spin_lock(&lun->lun_sep_lock);
-		if (lun->lun_se_dev == NULL) {
-			spin_unlock(&lun->lun_sep_lock);
-			spin_lock(&hba->device_lock);
-			spin_lock(&dev->se_port_lock);
-			continue;
-		}
-		spin_unlock(&lun->lun_sep_lock);
-
-		core_dev_del_lun(tpg, lun->unpacked_lun);
-
-		spin_lock(&hba->device_lock);
-		spin_lock(&dev->se_port_lock);
-	}
-	spin_unlock(&dev->se_port_lock);
-
-	return;
-}
-
 /*	se_free_virtual_device():
  *
  *	Used for IBLOCK, RAMDISK, and FILEIO Transport Drivers.
  */
 int se_free_virtual_device(struct se_device *dev, struct se_hba *hba)
 {
-	spin_lock(&hba->device_lock);
-	se_clear_dev_ports(dev);
-	spin_unlock(&hba->device_lock);
+	if (!list_empty(&dev->dev_sep_list))
+		dump_stack();
 
 	core_alua_free_lu_gp_mem(dev);
 	se_release_device_for_hba(dev);
-- 
1.7.3.5

[PATCH 19/24] target: Minor sparse warning fixes and annotations

[Nicholas A. Bellinger]

From: Fubo Chen <fubo.chen@gmail.com>

This patch addresses the majority of sparse warnings and adds
proper locking annotations.

Signed-off-by: Fubo Chen <fubo.chen@gmail.com>
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
(cherry picked from commit f63a5d6f3e055f10954c053a1402c7f62ce3d46f)
---
 drivers/target/target_core_device.c     |    1 +
 drivers/target/target_core_fabric_lib.c |    1 +
 drivers/target/target_core_mib.c        |   20 ++++++++++++++++++++
 drivers/target/target_core_pscsi.c      |    3 +++
 drivers/target/target_core_rd.h         |    2 --
 drivers/target/target_core_transport.c  |    4 +---
 include/target/target_core_transport.h  |    4 ++++
 7 files changed, 30 insertions(+), 5 deletions(-)

diff --git a/drivers/target/target_core_device.c b/drivers/target/target_core_device.c
index ec7f582..9cd87fd 100644
--- a/drivers/target/target_core_device.c
+++ b/drivers/target/target_core_device.c
@@ -586,6 +586,7 @@ static void core_export_port(
  *	Called with struct se_device->se_port_lock spinlock held.
  */
 static void core_release_port(struct se_device *dev, struct se_port *port)
+	__releases(&dev->se_port_lock) __acquires(&dev->se_port_lock)
 {
 	/*
 	 * Wait for any port reference for PR ALL_TG_PT=1 operation
diff --git a/drivers/target/target_core_fabric_lib.c b/drivers/target/target_core_fabric_lib.c
index 2628564..bddab5d 100644
--- a/drivers/target/target_core_fabric_lib.c
+++ b/drivers/target/target_core_fabric_lib.c
@@ -35,6 +35,7 @@
 #include <target/target_core_base.h>
 #include <target/target_core_device.h>
 #include <target/target_core_transport.h>
+#include <target/target_core_fabric_lib.h>
 #include <target/target_core_fabric_ops.h>
 #include <target/target_core_configfs.h>
 
diff --git a/drivers/target/target_core_mib.c b/drivers/target/target_core_mib.c
index d5a48aa..6098d9e 100644
--- a/drivers/target/target_core_mib.c
+++ b/drivers/target/target_core_mib.c
@@ -70,6 +70,7 @@ static inline int list_is_first(const struct list_head *list,
 static void *locate_hba_start(
 	struct seq_file *seq,
 	loff_t *pos)
+	__acquires(&se_global->g_device_lock)
 {
 	spin_lock(&se_global->g_device_lock);
 	return seq_list_start(&se_global->g_se_dev_list, *pos);
@@ -84,6 +85,7 @@ static void *locate_hba_next(
 }
 
 static void locate_hba_stop(struct seq_file *seq, void *v)
+	__releases(&se_global->g_device_lock)
 {
 	spin_unlock(&se_global->g_device_lock);
 }
@@ -98,6 +100,7 @@ static void locate_hba_stop(struct seq_file *seq, void *v)
 static void *scsi_inst_seq_start(
 	struct seq_file *seq,
 	loff_t *pos)
+	__acquires(&se_global->hba_lock)
 {
 	spin_lock(&se_global->hba_lock);
 	return seq_list_start(&se_global->g_hba_list, *pos);
@@ -112,6 +115,7 @@ static void *scsi_inst_seq_next(
 }
 
 static void scsi_inst_seq_stop(struct seq_file *seq, void *v)
+	__releases(&se_global->hba_lock)
 {
 	spin_unlock(&se_global->hba_lock);
 }
@@ -154,6 +158,7 @@ static const struct file_operations scsi_inst_seq_fops = {
  * SCSI Device Table
  */
 static void *scsi_dev_seq_start(struct seq_file *seq, loff_t *pos)
+	__acquires(&se_global->se_hba_lock)
 {
 	return locate_hba_start(seq, pos);
 }
@@ -164,6 +169,7 @@ static void *scsi_dev_seq_next(struct seq_file *seq, void *v, loff_t *pos)
 }
 
 static void scsi_dev_seq_stop(struct seq_file *seq, void *v)
+	 __releases(&se_global->hba_lock)
 {
 	locate_hba_stop(seq, v);
 }
@@ -235,6 +241,7 @@ static const struct file_operations scsi_dev_seq_fops = {
  * SCSI Port Table
  */
 static void *scsi_port_seq_start(struct seq_file *seq, loff_t *pos)
+	__acquires(&se_global->se_hba_lock)
 {
 	return locate_hba_start(seq, pos);
 }
@@ -245,6 +252,7 @@ static void *scsi_port_seq_next(struct seq_file *seq, void *v, loff_t *pos)
 }
 
 static void scsi_port_seq_stop(struct seq_file *seq, void *v)
+	__releases(&se_global->se_hba_lock)
 {
 	locate_hba_stop(seq, v);
 }
@@ -305,6 +313,7 @@ static const struct file_operations scsi_port_seq_fops = {
  * SCSI Transport Table
  */
 static void *scsi_transport_seq_start(struct seq_file *seq, loff_t *pos)
+	__acquires(&se_global->se_hba_lock)
 {
 	return locate_hba_start(seq, pos);
 }
@@ -315,6 +324,7 @@ static void *scsi_transport_seq_next(struct seq_file *seq, void *v, loff_t *pos)
 }
 
 static void scsi_transport_seq_stop(struct seq_file *seq, void *v)
+	__releases(&se_global->se_hba_lock)
 {
 	locate_hba_stop(seq, v);
 }
@@ -390,6 +400,7 @@ static const struct file_operations scsi_transport_seq_fops = {
  * SCSI Target Device Table
  */
 static void *scsi_tgt_dev_seq_start(struct seq_file *seq, loff_t *pos)
+	__acquires(&se_global->se_hba_lock)
 {
 	return locate_hba_start(seq, pos);
 }
@@ -400,6 +411,7 @@ static void *scsi_tgt_dev_seq_next(struct seq_file *seq, void *v, loff_t *pos)
 }
 
 static void scsi_tgt_dev_seq_stop(struct seq_file *seq, void *v)
+	__releases(&se_global->se_hba_lock)
 {
 	locate_hba_stop(seq, v);
 }
@@ -481,6 +493,7 @@ static const struct file_operations scsi_tgt_dev_seq_fops = {
  * SCSI Target Port Table
  */
 static void *scsi_tgt_port_seq_start(struct seq_file *seq, loff_t *pos)
+	 __acquires(&se_global->se_hba_lock)
 {
 	return locate_hba_start(seq, pos);
 }
@@ -491,6 +504,7 @@ static void *scsi_tgt_port_seq_next(struct seq_file *seq, void *v, loff_t *pos)
 }
 
 static void scsi_tgt_port_seq_stop(struct seq_file *seq, void *v)
+	 __releases(&se_global->se_hba_lock)
 {
 	locate_hba_stop(seq, v);
 }
@@ -575,6 +589,7 @@ static const struct file_operations scsi_tgt_port_seq_fops = {
  * Iterates through all active TPGs and extracts the info from the ACLs
  */
 static void *scsi_auth_intr_seq_start(struct seq_file *seq, loff_t *pos)
+	__acquires(&se_global->se_tpg_lock)
 {
 	spin_lock_bh(&se_global->se_tpg_lock);
 	return seq_list_start(&se_global->g_se_tpg_list, *pos);
@@ -587,6 +602,7 @@ static void *scsi_auth_intr_seq_next(struct seq_file *seq, void *v,
 }
 
 static void scsi_auth_intr_seq_stop(struct seq_file *seq, void *v)
+	__releases(&se_global->se_tpg_lock)
 {
 	spin_unlock_bh(&se_global->se_tpg_lock);
 }
@@ -700,6 +716,7 @@ static const struct file_operations scsi_auth_intr_seq_fops = {
  * to list the info fo this table.
  */
 static void *scsi_att_intr_port_seq_start(struct seq_file *seq, loff_t *pos)
+	__acquires(&se_global->se_tpg_lock)
 {
 	spin_lock_bh(&se_global->se_tpg_lock);
 	return seq_list_start(&se_global->g_se_tpg_list, *pos);
@@ -712,6 +729,7 @@ static void *scsi_att_intr_port_seq_next(struct seq_file *seq, void *v,
 }
 
 static void scsi_att_intr_port_seq_stop(struct seq_file *seq, void *v)
+	__releases(&se_global->se_tpg_lock)
 {
 	spin_unlock_bh(&se_global->se_tpg_lock);
 }
@@ -824,6 +842,7 @@ static const struct file_operations scsi_att_intr_port_seq_fops = {
  * SCSI Logical Unit Table
  */
 static void *scsi_lu_seq_start(struct seq_file *seq, loff_t *pos)
+	 __acquires(&se_global->se_hba_lock)
 {
 	return locate_hba_start(seq, pos);
 }
@@ -834,6 +853,7 @@ static void *scsi_lu_seq_next(struct seq_file *seq, void *v, loff_t *pos)
 }
 
 static void scsi_lu_seq_stop(struct seq_file *seq, void *v)
+	 __releases(&se_global->se_hba_lock)
 {
 	locate_hba_stop(seq, v);
 }
diff --git a/drivers/target/target_core_pscsi.c b/drivers/target/target_core_pscsi.c
index e795f7d..40c2419 100644
--- a/drivers/target/target_core_pscsi.c
+++ b/drivers/target/target_core_pscsi.c
@@ -442,6 +442,7 @@ static struct se_device *pscsi_create_type_disk(
 	struct pscsi_dev_virt *pdv,
 	struct se_subsystem_dev *se_dev,
 	struct se_hba *hba)
+	__releases(sh->host_lock)
 {
 	struct se_device *dev;
 	struct pscsi_hba_virt *phv = (struct pscsi_hba_virt *)pdv->pdv_se_hba->hba_ptr;
@@ -489,6 +490,7 @@ static struct se_device *pscsi_create_type_rom(
 	struct pscsi_dev_virt *pdv,
 	struct se_subsystem_dev *se_dev,
 	struct se_hba *hba)
+	__releases(sh->host_lock)
 {
 	struct se_device *dev;
 	struct pscsi_hba_virt *phv = (struct pscsi_hba_virt *)pdv->pdv_se_hba->hba_ptr;
@@ -523,6 +525,7 @@ static struct se_device *pscsi_create_type_other(
 	struct pscsi_dev_virt *pdv,
 	struct se_subsystem_dev *se_dev,
 	struct se_hba *hba)
+	__releases(sh->host_lock)
 {
 	struct se_device *dev;
 	struct pscsi_hba_virt *phv = (struct pscsi_hba_virt *)pdv->pdv_se_hba->hba_ptr;
diff --git a/drivers/target/target_core_rd.h b/drivers/target/target_core_rd.h
index 13badfb..3ea19e2 100644
--- a/drivers/target/target_core_rd.h
+++ b/drivers/target/target_core_rd.h
@@ -14,8 +14,6 @@
 #define RD_BLOCKSIZE		512
 #define RD_MAX_SECTORS		1024
 
-extern struct kmem_cache *se_mem_cache;
-
 /* Used in target_core_init_configfs() for virtual LUN 0 access */
 int __init rd_module_init(void);
 void rd_module_exit(void);
diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c
index 8cb628b..5fa5f89 100644
--- a/drivers/target/target_core_transport.c
+++ b/drivers/target/target_core_transport.c
@@ -229,8 +229,6 @@ static void transport_remove_cmd_from_queue(struct se_cmd *cmd,
 static int transport_set_sense_codes(struct se_cmd *cmd, u8 asc, u8 ascq);
 static void transport_stop_all_task_timers(struct se_cmd *cmd);
 
-int transport_emulate_control_cdb(struct se_task *task);
-
 int init_se_global(void)
 {
 	struct se_global *global;
@@ -4371,7 +4369,7 @@ out:
 	return -1;
 }
 
-extern u32 transport_calc_sg_num(
+u32 transport_calc_sg_num(
 	struct se_task *task,
 	struct se_mem *in_se_mem,
 	u32 task_offset)
diff --git a/include/target/target_core_transport.h b/include/target/target_core_transport.h
index 66f44e5..feaf5d4 100644
--- a/include/target/target_core_transport.h
+++ b/include/target/target_core_transport.h
@@ -109,6 +109,8 @@
 struct se_mem;
 struct se_subsystem_api;
 
+extern struct kmem_cache *se_mem_cache;
+
 extern int init_se_global(void);
 extern void release_se_global(void);
 extern void transport_init_queue_obj(struct se_queue_obj *);
@@ -186,6 +188,8 @@ extern void transport_generic_process_write(struct se_cmd *);
 extern int transport_generic_do_tmr(struct se_cmd *);
 /* From target_core_alua.c */
 extern int core_alua_check_nonop_delay(struct se_cmd *);
+/* From target_core_cdb.c */
+extern int transport_emulate_control_cdb(struct se_task *);
 
 /*
  * Each se_transport_task_t can have N number of possible struct se_task's
-- 
1.7.3.5

[PATCH 20/24] target: Remove spurious double cast from structure macro accessors

[Nicholas A. Bellinger]

From: Nicholas Bellinger <nab@linux-iscsi.org>

Reported-by: Fubo Chen <fubo.chen@gmail.com>
Cc: James Bottomley <James.Bottomley@suse.de>
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
(cherry picked from commit b58b76cd21bf461308e7fba175931f8f8c089bd7)
---
 include/target/target_core_base.h |   22 +++++++++++-----------
 1 files changed, 11 insertions(+), 11 deletions(-)

diff --git a/include/target/target_core_base.h b/include/target/target_core_base.h
index c071907..ba77c11 100644
--- a/include/target/target_core_base.h
+++ b/include/target/target_core_base.h
@@ -486,8 +486,8 @@ struct se_task {
 	struct list_head t_state_list;
 } ____cacheline_aligned;
 
-#define TASK_CMD(task)	((struct se_cmd *)task->task_se_cmd)
-#define TASK_DEV(task)	((struct se_device *)task->se_dev)
+#define TASK_CMD(task)	((task)->task_se_cmd)
+#define TASK_DEV(task)	((task)->se_dev)
 
 struct se_cmd {
 	/* SAM response code being sent to initiator */
@@ -543,8 +543,8 @@ struct se_cmd {
 	void (*transport_complete_callback)(struct se_cmd *);
 } ____cacheline_aligned;
 
-#define T_TASK(cmd)     ((struct se_transport_task *)(cmd->t_task))
-#define CMD_TFO(cmd) ((struct target_core_fabric_ops *)cmd->se_tfo)
+#define T_TASK(cmd)     ((cmd)->t_task)
+#define CMD_TFO(cmd)	((cmd)->se_tfo)
 
 struct se_tmr_req {
 	/* Task Management function to be preformed */
@@ -611,8 +611,8 @@ struct se_session {
 	struct list_head	sess_acl_list;
 } ____cacheline_aligned;
 
-#define SE_SESS(cmd)		((struct se_session *)(cmd)->se_sess)
-#define SE_NODE_ACL(sess)	((struct se_node_acl *)(sess)->se_node_acl)
+#define SE_SESS(cmd)		((cmd)->se_sess)
+#define SE_NODE_ACL(sess)	((sess)->se_node_acl)
 
 struct se_device;
 struct se_transform_info;
@@ -799,8 +799,8 @@ struct se_device {
 	struct list_head	g_se_dev_list;
 }  ____cacheline_aligned;
 
-#define SE_DEV(cmd)		((struct se_device *)(cmd)->se_lun->lun_se_dev)
-#define SU_DEV(dev)		((struct se_subsystem_dev *)(dev)->se_sub_dev)
+#define SE_DEV(cmd)		((cmd)->se_lun->lun_se_dev)
+#define SU_DEV(dev)		((dev)->se_sub_dev)
 #define DEV_ATTRIB(dev)		(&(dev)->se_sub_dev->se_dev_attrib)
 #define DEV_T10_WWN(dev)	(&(dev)->se_sub_dev->t10_wwn)
 
@@ -829,7 +829,7 @@ struct se_hba {
 	struct se_subsystem_api *transport;
 }  ____cacheline_aligned;
 
-#define SE_HBA(d)		((struct se_hba *)(d)->se_hba)
+#define SE_HBA(dev)		((dev)->se_hba)
 
 struct se_lun {
 	/* See transport_lun_status_table */
@@ -849,7 +849,7 @@ struct se_lun {
 	struct se_port	*lun_sep;
 } ____cacheline_aligned;
 
-#define SE_LUN(c)		((struct se_lun *)(c)->se_lun)
+#define SE_LUN(cmd)		((cmd)->se_lun)
 
 struct se_port {
 	/* RELATIVE TARGET PORT IDENTIFER */
@@ -909,7 +909,7 @@ struct se_portal_group {
 	struct config_group	tpg_param_group;
 } ____cacheline_aligned;
 
-#define TPG_TFO(se_tpg)	((struct target_core_fabric_ops *)(se_tpg)->se_tpg_tfo)
+#define TPG_TFO(se_tpg)	((se_tpg)->se_tpg_tfo)
 
 struct se_wwn {
 	struct target_fabric_configfs *wwn_tf;
-- 
1.7.3.5

[PATCH 21/24] target: Convert rd_build_device_space() to use errno

[Nicholas A. Bellinger]

From: Dan Carpenter <error27@gmail.com>

This patch converts rd_build_device_space() to return errno usage
for failures in rd_create_virtdevice().

Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
(cherry picked from commit f7446ee6eaa2d1d20692881adc705bebff0d5a1f)
---
 drivers/target/target_core_rd.c |   15 +++++++--------
 1 files changed, 7 insertions(+), 8 deletions(-)

diff --git a/drivers/target/target_core_rd.c b/drivers/target/target_core_rd.c
index 0d0a583..663177e 100644
--- a/drivers/target/target_core_rd.c
+++ b/drivers/target/target_core_rd.c
@@ -151,7 +151,7 @@ static int rd_build_device_space(struct rd_dev *rd_dev)
 	if (rd_dev->rd_page_count <= 0) {
 		printk(KERN_ERR "Illegal page count: %u for Ramdisk device\n",
 			rd_dev->rd_page_count);
-		return -1;
+		return -EINVAL;
 	}
 	total_sg_needed = rd_dev->rd_page_count;
 
@@ -161,7 +161,7 @@ static int rd_build_device_space(struct rd_dev *rd_dev)
 	if (!(sg_table)) {
 		printk(KERN_ERR "Unable to allocate memory for Ramdisk"
 			" scatterlist tables\n");
-		return -1;
+		return -ENOMEM;
 	}
 
 	rd_dev->sg_table_array = sg_table;
@@ -176,7 +176,7 @@ static int rd_build_device_space(struct rd_dev *rd_dev)
 		if (!(sg)) {
 			printk(KERN_ERR "Unable to allocate scatterlist array"
 				" for struct rd_dev\n");
-			return -1;
+			return -ENOMEM;
 		}
 
 		sg_init_table((struct scatterlist *)&sg[0], sg_per_table);
@@ -192,7 +192,7 @@ static int rd_build_device_space(struct rd_dev *rd_dev)
 			if (!(pg)) {
 				printk(KERN_ERR "Unable to allocate scatterlist"
 					" pages for struct rd_dev_sg_table\n");
-				return -1;
+				return -ENOMEM;
 			}
 			sg_assign_page(&sg[j], pg);
 			sg[j].length = PAGE_SIZE;
@@ -254,15 +254,14 @@ static struct se_device *rd_create_virtdevice(
 	struct se_dev_limits dev_limits;
 	struct rd_dev *rd_dev = p;
 	struct rd_host *rd_host = hba->hba_ptr;
-	int dev_flags = 0, ret = -EINVAL;
+	int dev_flags = 0, ret;
 	char prod[16], rev[4];
 
 	memset(&dev_limits, 0, sizeof(struct se_dev_limits));
 
-	if (rd_build_device_space(rd_dev) < 0) {
-		ret = -ENOMEM;
+	ret = rd_build_device_space(rd_dev);
+	if (ret < 0)
 		goto fail;
-	}
 
 	snprintf(prod, 16, "RAMDISK-%s", (rd_dev->rd_direct) ? "DR" : "MCP");
 	snprintf(rev, 4, "%s", (rd_dev->rd_direct) ? RD_DR_VERSION :
-- 
1.7.3.5

[PATCH 22/24] target: Remove unnecessary container_of() pointer check

[Nicholas A. Bellinger]

From: Dan Carpenter <error27@gmail.com>

As the struct configfs_item_operations target_core_dev_item_ops->release()
callback will never be null from fs/configfs/item.c:config_item_cleanup(),
this NULL pointer check is unnecessary.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
(cherry picked from commit 6e9af570076fb3ad4fb7442a8243271f08779c45)
---
 drivers/target/target_core_configfs.c |    6 +-----
 1 files changed, 1 insertions(+), 5 deletions(-)

diff --git a/drivers/target/target_core_configfs.c b/drivers/target/target_core_configfs.c
index 99e07ba..30ae3af 100644
--- a/drivers/target/target_core_configfs.c
+++ b/drivers/target/target_core_configfs.c
@@ -2003,12 +2003,8 @@ static void target_core_dev_release(struct config_item *item)
 {
 	struct se_subsystem_dev *se_dev = container_of(to_config_group(item),
 				struct se_subsystem_dev, se_dev_group);
-	struct config_group *dev_cg;
+	struct config_group *dev_cg = &se_dev->se_dev_group;
 
-	if (!(se_dev))
-		return;
-
-	dev_cg = &se_dev->se_dev_group;
 	kfree(dev_cg->default_groups);
 }
 
-- 
1.7.3.5

[PATCH 23/24] target: Convert TMR REQ/RSP definitions to target namespace

[Nicholas A. Bellinger]

From: Nicholas Bellinger <nab@linux-iscsi.org>

This patch changes include/target/target_core_tmr.h code to use
target specific 'TMR_*' prefixed definitions for fabric independent
SCSI Task Management Request/Request naming in include/scsi/scsi.h
definitions for mainline target code.

Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
---
 drivers/target/target_core_transport.c |   19 ++++-------
 include/target/target_core_tmr.h       |   52 +++++++++++++------------------
 2 files changed, 29 insertions(+), 42 deletions(-)

diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c
index 5fa5f89..ddc1f7f 100644
--- a/drivers/target/target_core_transport.c
+++ b/drivers/target/target_core_transport.c
@@ -5803,31 +5803,26 @@ int transport_generic_do_tmr(struct se_cmd *cmd)
 	int ret;
 
 	switch (tmr->function) {
-	case ABORT_TASK:
+	case TMR_ABORT_TASK:
 		ref_cmd = tmr->ref_cmd;
 		tmr->response = TMR_FUNCTION_REJECTED;
 		break;
-	case ABORT_TASK_SET:
-	case CLEAR_ACA:
-	case CLEAR_TASK_SET:
+	case TMR_ABORT_TASK_SET:
+	case TMR_CLEAR_ACA:
+	case TMR_CLEAR_TASK_SET:
 		tmr->response = TMR_TASK_MGMT_FUNCTION_NOT_SUPPORTED;
 		break;
-	case LUN_RESET:
+	case TMR_LUN_RESET:
 		ret = core_tmr_lun_reset(dev, tmr, NULL, NULL);
 		tmr->response = (!ret) ? TMR_FUNCTION_COMPLETE :
 					 TMR_FUNCTION_REJECTED;
 		break;
-#if 0
-	case TARGET_WARM_RESET:
-		transport_generic_host_reset(dev->se_hba);
+	case TMR_TARGET_WARM_RESET:
 		tmr->response = TMR_FUNCTION_REJECTED;
 		break;
-	case TARGET_COLD_RESET:
-		transport_generic_host_reset(dev->se_hba);
-		transport_generic_cold_reset(dev->se_hba);
+	case TMR_TARGET_COLD_RESET:
 		tmr->response = TMR_FUNCTION_REJECTED;
 		break;
-#endif
 	default:
 		printk(KERN_ERR "Uknown TMR function: 0x%02x.\n",
 				tmr->function);
diff --git a/include/target/target_core_tmr.h b/include/target/target_core_tmr.h
index 6c8248b..bd55968 100644
--- a/include/target/target_core_tmr.h
+++ b/include/target/target_core_tmr.h
@@ -1,37 +1,29 @@
 #ifndef TARGET_CORE_TMR_H
 #define TARGET_CORE_TMR_H
 
-/* task management function values */
-#ifdef ABORT_TASK
-#undef ABORT_TASK
-#endif /* ABORT_TASK */
-#define ABORT_TASK				1
-#ifdef ABORT_TASK_SET
-#undef ABORT_TASK_SET
-#endif /* ABORT_TASK_SET */
-#define ABORT_TASK_SET				2
-#ifdef CLEAR_ACA
-#undef CLEAR_ACA
-#endif /* CLEAR_ACA */
-#define CLEAR_ACA				3
-#ifdef CLEAR_TASK_SET
-#undef CLEAR_TASK_SET
-#endif /* CLEAR_TASK_SET */
-#define CLEAR_TASK_SET				4
-#define LUN_RESET				5
-#define TARGET_WARM_RESET			6
-#define TARGET_COLD_RESET			7
-#define TASK_REASSIGN				8
+/* fabric independent task management function values */
+enum tcm_tmreq_table {
+	TMR_ABORT_TASK		= 1,
+	TMR_ABORT_TASK_SET	= 2,
+	TMR_CLEAR_ACA		= 3,
+	TMR_CLEAR_TASK_SET	= 4,
+	TMR_LUN_RESET		= 5,
+	TMR_TARGET_WARM_RESET	= 6,
+	TMR_TARGET_COLD_RESET	= 7,
+	TMR_FABRIC_TMR		= 255,
+};
 
-/* task management response values */
-#define TMR_FUNCTION_COMPLETE			0
-#define TMR_TASK_DOES_NOT_EXIST			1
-#define TMR_LUN_DOES_NOT_EXIST			2
-#define TMR_TASK_STILL_ALLEGIANT		3
-#define TMR_TASK_FAILOVER_NOT_SUPPORTED		4
-#define TMR_TASK_MGMT_FUNCTION_NOT_SUPPORTED	5
-#define TMR_FUNCTION_AUTHORIZATION_FAILED	6
-#define TMR_FUNCTION_REJECTED			255
+/* fabric independent task management response values */
+enum tcm_tmrsp_table {
+	TMR_FUNCTION_COMPLETE		= 0,
+	TMR_TASK_DOES_NOT_EXIST		= 1,
+	TMR_LUN_DOES_NOT_EXIST		= 2,
+	TMR_TASK_STILL_ALLEGIANT	= 3,
+	TMR_TASK_FAILOVER_NOT_SUPPORTED	= 4,
+	TMR_TASK_MGMT_FUNCTION_NOT_SUPPORTED	= 5,
+	TMR_FUNCTION_AUTHORIZATION_FAILED = 6,
+	TMR_FUNCTION_REJECTED		= 255,
+};
 
 extern struct kmem_cache *se_tmr_req_cache;
 
-- 
1.7.3.5

[PATCH 24/24] target core v4.0.0-rc7

[Nicholas A. Bellinger]

From: Nicholas Bellinger <nab@linux-iscsi.org>

Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
(cherry picked from commit fbd8b6ab80e7316838a31ed2f4c99aa3cd3c47e7)
---
 include/target/target_core_base.h |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/include/target/target_core_base.h b/include/target/target_core_base.h
index ba77c11..574bafd 100644
--- a/include/target/target_core_base.h
+++ b/include/target/target_core_base.h
@@ -9,7 +9,7 @@
 #include <net/sock.h>
 #include <net/tcp.h>
 
-#define TARGET_CORE_MOD_VERSION		"v4.0.0-rc6"
+#define TARGET_CORE_MOD_VERSION		"v4.0.0-rc7"
 #define SHUTDOWN_SIGS	(sigmask(SIGKILL)|sigmask(SIGINT)|sigmask(SIGABRT))
 
 /* Used by transport_generic_allocate_iovecs() */
-- 
1.7.3.5

Re: [PATCH 14/24] target: Call proc_mkdir + remove_proc_entry with NULL parameter

[James Bottomley]

On Sat, 2011-01-29 at 10:36 -0800, Nicholas A. Bellinger wrote:
> From: Nicholas Bellinger <nab@linux-iscsi.org>
> 
> This patch makes proc_mkdir() and remove_proc_entry() use a NULL
> parameter to fix the following sparse warning:
> 
> CHECK   drivers/target/target_core_configfs.c
> drivers/target/target_core_configfs.c:3131:54: warning: Using plain integer as NULL pointer
> drivers/target/target_core_configfs.c:3145:50: warning: Using plain integer as NULL pointer
> drivers/target/target_core_configfs.c:3212:42: warning: Using plain integer as NULL pointer
> 
> Reported-by: Fubo Chen <fubo.chen@gmail.com>
> Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
> (cherry picked from commit d83fca37fa4a6c2bcb2806800f221528a76fc080)

Firstly, don't use git-cherry-pick -x ... it adds spurious information
like this that I have to edit out manually.

Secondly, if, as you said, you're transitioning to debugfs based
interfaces, don't do this, just strip the /proc based interface from
mainline.

James

Re: [PATCH 14/24] target: Call proc_mkdir + remove_proc_entry with NULL parameter

[Nicholas A. Bellinger]

On Sat, 2011-01-29 at 12:18 -0800, James Bottomley wrote:
> On Sat, 2011-01-29 at 10:36 -0800, Nicholas A. Bellinger wrote:
> > From: Nicholas Bellinger <nab@linux-iscsi.org>
> > 
> > This patch makes proc_mkdir() and remove_proc_entry() use a NULL
> > parameter to fix the following sparse warning:
> > 
> > CHECK   drivers/target/target_core_configfs.c
> > drivers/target/target_core_configfs.c:3131:54: warning: Using plain integer as NULL pointer
> > drivers/target/target_core_configfs.c:3145:50: warning: Using plain integer as NULL pointer
> > drivers/target/target_core_configfs.c:3212:42: warning: Using plain integer as NULL pointer
> > 
> > Reported-by: Fubo Chen <fubo.chen@gmail.com>
> > Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
> > (cherry picked from commit d83fca37fa4a6c2bcb2806800f221528a76fc080)
> 
> Firstly, don't use git-cherry-pick -x ... it adds spurious information
> like this that I have to edit out manually.
> 

Er sorry, these should have been stripped out before sending.  I will
make sure these are removed for next series.

> Secondly, if, as you said, you're transitioning to debugfs based
> interfaces, don't do this, just strip the /proc based interface from
> mainline.
> 

Well, I would like them to eventually go into individual
target_core_configfs.c and target_core_fabric_configfs.c context
specific attributes, but we need to address the PAGE_SIZE limitiation in
configfs/sysfs attribute output before this can be done.  This was
briefly discussed here:

http://marc.info/?l=linux-scsi&m=129590246906137&w=2

In the mean time having proper SCSI MIB read-only statistics is still
very important for-38, so please consider this minor patch.

Thanks,

--nab