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Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending

Browse source 
Pull target updates from Nicholas Bellinger:
 "There have been lots of work in a number of areas this past round.
  The highlights include:

   - Break out target_core_cdb.c emulation into SPC/SBC ops (hch)
   - Add a parse_cdb method to target backend drivers (hch)
   - Move sync_cache + write_same + unmap into spc_ops (hch)
   - Use target_execute_cmd for WRITEs in iscsi_target + srpt (hch)
   - Offload WRITE I/O backend submission in tcm_qla2xxx + tcm_fc (hch +
     nab)
   - Refactor core_update_device_list_for_node() into enable/disable
     funcs (agrover)
   - Replace the TCM processing thread with a TMR work queue (hch)
   - Fix regression in transport_add_device_to_core_hba from TMR
     conversion (DanC)
   - Remove racy, now-redundant check of sess_tearing_down with qla2xxx
     (roland)
   - Add range checking, fix reading of data len + possible underflow in
     UNMAP (roland)
   - Allow for target_submit_cmd() returning errors + convert fabrics
     (roland + nab)
   - Drop bogus struct file usage for iSCSI/SCTP (viro)"

* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending: (54 commits)
  iscsi-target: Drop bogus struct file usage for iSCSI/SCTP
  target: NULL dereference on error path
  target: Allow for target_submit_cmd() returning errors
  target: Check number of unmap descriptors against our limit
  target: Fix possible integer underflow in UNMAP emulation
  target: Fix reading of data length fields for UNMAP commands
  target: Add range checking to UNMAP emulation
  target: Add generation of LOGICAL BLOCK ADDRESS OUT OF RANGE
  target: Make unnecessarily global se_dev_align_max_sectors() static
  target: Remove se_session.sess_wait_list
  qla2xxx: Remove racy, now-redundant check of sess_tearing_down
  target: Check sess_tearing_down in target_get_sess_cmd()
  sbp-target: Consolidate duplicated error path code in sbp_handle_command()
  target: Un-export target_get_sess_cmd()
  qla2xxx: Get rid of redundant qla_tgt_sess.tearing_down
  target: Make core_disable_device_list_for_node use pre-refactoring lock ordering
  target: refactor core_update_device_list_for_node()
  target: Eliminate else using boolean logic
  target: Misc retval cleanups
  target: Remove hba param from core_dev_add_lun
  ...
This commit is contained in:
Linus Torvalds 2012-07-22 13:31:57 -07:00
commit cb47c1831f
35 changed files with 1718 additions and 2433 deletions
Download patch file Download diff file Expand all files Collapse all files

16
drivers/scsi/qla2xxx/qla_target.c
View file

@ -2643,19 +2643,9 @@ static void qlt_do_work(struct work_struct *work)
spin_lock_irqsave(&ha->hardware_lock, flags);
sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha,
atio->u.isp24.fcp_hdr.s_id);
if (sess) {
if (unlikely(sess->tearing_down)) {
sess = NULL;
spin_unlock_irqrestore(&ha->hardware_lock, flags);
goto out_term;
} else {
/*
* Do the extra kref_get() before dropping
* qla_hw_data->hardware_lock.
*/
kref_get(&sess->se_sess->sess_kref);
}
}
/* Do kref_get() before dropping qla_hw_data->hardware_lock. */
if (sess)
kref_get(&sess->se_sess->sess_kref);
spin_unlock_irqrestore(&ha->hardware_lock, flags);
if (unlikely(!sess)) {

3
drivers/scsi/qla2xxx/qla_target.h
View file

@ -639,7 +639,7 @@ struct qla_tgt_func_tmpl {
int (*handle_cmd)(struct scsi_qla_host *, struct qla_tgt_cmd *,
unsigned char *, uint32_t, int, int, int);
int (*handle_data)(struct qla_tgt_cmd *);
void (*handle_data)(struct qla_tgt_cmd *);
int (*handle_tmr)(struct qla_tgt_mgmt_cmd *, uint32_t, uint8_t,
uint32_t);
void (*free_cmd)(struct qla_tgt_cmd *);
@ -813,7 +813,6 @@ struct qla_tgt_sess {
unsigned int conf_compl_supported:1;
unsigned int deleted:1;
unsigned int local:1;
unsigned int tearing_down:1;
struct se_session *se_sess;
struct scsi_qla_host *vha;

55
drivers/scsi/qla2xxx/tcm_qla2xxx.c
View file

@ -38,8 +38,6 @@
#include <linux/string.h>
#include <linux/configfs.h>
#include <linux/ctype.h>
#include <linux/string.h>
#include <linux/ctype.h>
#include <asm/unaligned.h>
#include <scsi/scsi.h>
#include <scsi/scsi_host.h>
@ -466,8 +464,7 @@ static int tcm_qla2xxx_shutdown_session(struct se_session *se_sess)
vha = sess->vha;
spin_lock_irqsave(&vha->hw->hardware_lock, flags);
sess->tearing_down = 1;
target_splice_sess_cmd_list(se_sess);
target_sess_cmd_list_set_waiting(se_sess);
spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
return 1;
@ -600,28 +597,15 @@ static int tcm_qla2xxx_handle_cmd(scsi_qla_host_t *vha, struct qla_tgt_cmd *cmd,
return -EINVAL;
}
target_submit_cmd(se_cmd, se_sess, cdb, &cmd->sense_buffer[0],
return target_submit_cmd(se_cmd, se_sess, cdb, &cmd->sense_buffer[0],
cmd->unpacked_lun, data_length, fcp_task_attr,
data_dir, flags);
return 0;
}
static void tcm_qla2xxx_do_rsp(struct work_struct *work)
static void tcm_qla2xxx_handle_data_work(struct work_struct *work)
{
struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
/*
* Dispatch ->queue_status from workqueue process context
*/
transport_generic_request_failure(&cmd->se_cmd);
}
/*
* Called from qla_target.c:qlt_do_ctio_completion()
*/
static int tcm_qla2xxx_handle_data(struct qla_tgt_cmd *cmd)
{
struct se_cmd *se_cmd = &cmd->se_cmd;
unsigned long flags;
/*
* Ensure that the complete FCP WRITE payload has been received.
* Otherwise return an exception via CHECK_CONDITION status.
@ -631,24 +615,26 @@ static int tcm_qla2xxx_handle_data(struct qla_tgt_cmd *cmd)
* Check if se_cmd has already been aborted via LUN_RESET, and
* waiting upon completion in tcm_qla2xxx_write_pending_status()
*/
spin_lock_irqsave(&se_cmd->t_state_lock, flags);
if (se_cmd->transport_state & CMD_T_ABORTED) {
spin_unlock_irqrestore(&se_cmd->t_state_lock, flags);
complete(&se_cmd->t_transport_stop_comp);
return 0;
if (cmd->se_cmd.transport_state & CMD_T_ABORTED) {
complete(&cmd->se_cmd.t_transport_stop_comp);
return;
}
spin_unlock_irqrestore(&se_cmd->t_state_lock, flags);
se_cmd->scsi_sense_reason = TCM_CHECK_CONDITION_ABORT_CMD;
INIT_WORK(&cmd->work, tcm_qla2xxx_do_rsp);
queue_work(tcm_qla2xxx_free_wq, &cmd->work);
return 0;
cmd->se_cmd.scsi_sense_reason = TCM_CHECK_CONDITION_ABORT_CMD;
transport_generic_request_failure(&cmd->se_cmd);
return;
}
/*
* We now tell TCM to queue this WRITE CDB with TRANSPORT_PROCESS_WRITE
* status to the backstore processing thread.
*/
return transport_generic_handle_data(&cmd->se_cmd);
return target_execute_cmd(&cmd->se_cmd);
}
/*
* Called from qla_target.c:qlt_do_ctio_completion()
*/
static void tcm_qla2xxx_handle_data(struct qla_tgt_cmd *cmd)
{
INIT_WORK(&cmd->work, tcm_qla2xxx_handle_data_work);
queue_work(tcm_qla2xxx_free_wq, &cmd->work);
}
/*
@ -1690,7 +1676,6 @@ static struct target_core_fabric_ops tcm_qla2xxx_ops = {
.tpg_alloc_fabric_acl = tcm_qla2xxx_alloc_fabric_acl,
.tpg_release_fabric_acl = tcm_qla2xxx_release_fabric_acl,
.tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index,
.new_cmd_map = NULL,
.check_stop_free = tcm_qla2xxx_check_stop_free,
.release_cmd = tcm_qla2xxx_release_cmd,
.put_session = tcm_qla2xxx_put_session,