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authorNicholas Bellinger <nab@linux-iscsi.org>2014-03-22 14:55:56 -0700
committerNicholas Bellinger <nab@linux-iscsi.org>2014-04-07 01:48:51 -0700
commit131e6abc674edb9f9a59090bb35bf6650569b7e7 (patch)
tree3baa38894c61d5fca1a99ae91a7ba9986c570d34
parent68259b5aac13a57cba797b9605ed9812158f0e72 (diff)
downloadlinux-131e6abc674edb9f9a59090bb35bf6650569b7e7.tar.bz2
target: Add TFO->abort_task for aborted task resources release
Now that TASK_ABORTED status is not generated for all cases by TMR ABORT_TASK + LUN_RESET, a new TFO->abort_task() caller is necessary in order to give fabric drivers a chance to unmap hardware / software resources before the se_cmd descriptor is released via the normal TFO->release_cmd() codepath. This patch adds TFO->aborted_task() in core_tmr_abort_task() in place of the original transport_send_task_abort(), and also updates all fabric drivers to implement this caller. The fabric drivers that include changes to perform cleanup via ->aborted_task() are: - iscsi-target - iser-target - srpt - tcm_qla2xxx The fabric drivers that currently set ->aborted_task() to NOPs are: - loopback - tcm_fc - usb-gadget - sbp-target - vhost-scsi For the latter five, there appears to be no additional cleanup required before invoking TFO->release_cmd() to release the se_cmd descriptor. v2 changes: - Move ->aborted_task() call into transport_cmd_finish_abort (Alex) Cc: Alex Leung <amleung21@yahoo.com> Cc: Mark Rustad <mark.d.rustad@intel.com> Cc: Roland Dreier <roland@kernel.org> Cc: Vu Pham <vu@mellanox.com> Cc: Chris Boot <bootc@bootc.net> Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Cc: Michael S. Tsirkin <mst@redhat.com> Cc: Giridhar Malavali <giridhar.malavali@qlogic.com> Cc: Saurav Kashyap <saurav.kashyap@qlogic.com> Cc: Quinn Tran <quinn.tran@qlogic.com> Cc: Sagi Grimberg <sagig@mellanox.com> Cc: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
-rw-r--r--drivers/infiniband/ulp/isert/ib_isert.c19
-rw-r--r--drivers/infiniband/ulp/srpt/ib_srpt.c9
-rw-r--r--drivers/scsi/qla2xxx/tcm_qla2xxx.c16
-rw-r--r--drivers/target/iscsi/iscsi_target.c13
-rw-r--r--drivers/target/iscsi/iscsi_target_configfs.c8
-rw-r--r--drivers/target/iscsi/iscsi_target_util.c4
-rw-r--r--drivers/target/iscsi/iscsi_target_util.h1
-rw-r--r--drivers/target/loopback/tcm_loop.c6
-rw-r--r--drivers/target/sbp/sbp_target.c6
-rw-r--r--drivers/target/target_core_configfs.c4
-rw-r--r--drivers/target/target_core_transport.c6
-rw-r--r--drivers/target/tcm_fc/tcm_fc.h1
-rw-r--r--drivers/target/tcm_fc/tfc_cmd.c5
-rw-r--r--drivers/target/tcm_fc/tfc_conf.c1
-rw-r--r--drivers/usb/gadget/tcm_usb_gadget.c6
-rw-r--r--drivers/vhost/scsi.c6
-rw-r--r--include/target/iscsi/iscsi_transport.h1
-rw-r--r--include/target/target_core_fabric.h1
18 files changed, 111 insertions, 2 deletions
diff --git a/drivers/infiniband/ulp/isert/ib_isert.c b/drivers/infiniband/ulp/isert/ib_isert.c
index 529d2cbfe45a..18ada7fb0fc9 100644
--- a/drivers/infiniband/ulp/isert/ib_isert.c
+++ b/drivers/infiniband/ulp/isert/ib_isert.c
@@ -2162,6 +2162,24 @@ isert_put_response(struct iscsi_conn *conn, struct iscsi_cmd *cmd)
return isert_post_response(isert_conn, isert_cmd);
}
+static void
+isert_aborted_task(struct iscsi_conn *conn, struct iscsi_cmd *cmd)
+{
+ struct isert_cmd *isert_cmd = iscsit_priv_cmd(cmd);
+ struct isert_conn *isert_conn = (struct isert_conn *)conn->context;
+ struct isert_device *device = isert_conn->conn_device;
+
+ spin_lock_bh(&conn->cmd_lock);
+ if (!list_empty(&cmd->i_conn_node))
+ list_del_init(&cmd->i_conn_node);
+ spin_unlock_bh(&conn->cmd_lock);
+
+ if (cmd->data_direction == DMA_TO_DEVICE)
+ iscsit_stop_dataout_timer(cmd);
+
+ device->unreg_rdma_mem(isert_cmd, isert_conn);
+}
+
static int
isert_put_nopin(struct iscsi_cmd *cmd, struct iscsi_conn *conn,
bool nopout_response)
@@ -3217,6 +3235,7 @@ static struct iscsit_transport iser_target_transport = {
.iscsit_get_dataout = isert_get_dataout,
.iscsit_queue_data_in = isert_put_datain,
.iscsit_queue_status = isert_put_response,
+ .iscsit_aborted_task = isert_aborted_task,
};
static int __init isert_init(void)
diff --git a/drivers/infiniband/ulp/srpt/ib_srpt.c b/drivers/infiniband/ulp/srpt/ib_srpt.c
index 0e537d8d0e47..f03aafdc3572 100644
--- a/drivers/infiniband/ulp/srpt/ib_srpt.c
+++ b/drivers/infiniband/ulp/srpt/ib_srpt.c
@@ -3081,6 +3081,14 @@ static void srpt_queue_tm_rsp(struct se_cmd *cmd)
srpt_queue_response(cmd);
}
+static void srpt_aborted_task(struct se_cmd *cmd)
+{
+ struct srpt_send_ioctx *ioctx = container_of(cmd,
+ struct srpt_send_ioctx, cmd);
+
+ srpt_unmap_sg_to_ib_sge(ioctx->ch, ioctx);
+}
+
static int srpt_queue_status(struct se_cmd *cmd)
{
struct srpt_send_ioctx *ioctx;
@@ -3928,6 +3936,7 @@ static struct target_core_fabric_ops srpt_template = {
.queue_data_in = srpt_queue_data_in,
.queue_status = srpt_queue_status,
.queue_tm_rsp = srpt_queue_tm_rsp,
+ .aborted_task = srpt_aborted_task,
/*
* Setup function pointers for generic logic in
* target_core_fabric_configfs.c
diff --git a/drivers/scsi/qla2xxx/tcm_qla2xxx.c b/drivers/scsi/qla2xxx/tcm_qla2xxx.c
index 788c4fe2b0c9..b23a0ffe140e 100644
--- a/drivers/scsi/qla2xxx/tcm_qla2xxx.c
+++ b/drivers/scsi/qla2xxx/tcm_qla2xxx.c
@@ -684,6 +684,20 @@ static void tcm_qla2xxx_queue_tm_rsp(struct se_cmd *se_cmd)
qlt_xmit_tm_rsp(mcmd);
}
+static void tcm_qla2xxx_aborted_task(struct se_cmd *se_cmd)
+{
+ struct qla_tgt_cmd *cmd = container_of(se_cmd,
+ struct qla_tgt_cmd, se_cmd);
+ struct scsi_qla_host *vha = cmd->vha;
+ struct qla_hw_data *ha = vha->hw;
+
+ if (!cmd->sg_mapped)
+ return;
+
+ pci_unmap_sg(ha->pdev, cmd->sg, cmd->sg_cnt, cmd->dma_data_direction);
+ cmd->sg_mapped = 0;
+}
+
/* Local pointer to allocated TCM configfs fabric module */
struct target_fabric_configfs *tcm_qla2xxx_fabric_configfs;
struct target_fabric_configfs *tcm_qla2xxx_npiv_fabric_configfs;
@@ -1877,6 +1891,7 @@ static struct target_core_fabric_ops tcm_qla2xxx_ops = {
.queue_data_in = tcm_qla2xxx_queue_data_in,
.queue_status = tcm_qla2xxx_queue_status,
.queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp,
+ .aborted_task = tcm_qla2xxx_aborted_task,
/*
* Setup function pointers for generic logic in
* target_core_fabric_configfs.c
@@ -1926,6 +1941,7 @@ static struct target_core_fabric_ops tcm_qla2xxx_npiv_ops = {
.queue_data_in = tcm_qla2xxx_queue_data_in,
.queue_status = tcm_qla2xxx_queue_status,
.queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp,
+ .aborted_task = tcm_qla2xxx_aborted_task,
/*
* Setup function pointers for generic logic in
* target_core_fabric_configfs.c
diff --git a/drivers/target/iscsi/iscsi_target.c b/drivers/target/iscsi/iscsi_target.c
index df0456abc4fd..27f37c92dff3 100644
--- a/drivers/target/iscsi/iscsi_target.c
+++ b/drivers/target/iscsi/iscsi_target.c
@@ -499,6 +499,18 @@ static int iscsit_queue_rsp(struct iscsi_conn *conn, struct iscsi_cmd *cmd)
return 0;
}
+static void iscsit_aborted_task(struct iscsi_conn *conn, struct iscsi_cmd *cmd)
+{
+ bool scsi_cmd = (cmd->iscsi_opcode == ISCSI_OP_SCSI_CMD);
+
+ spin_lock_bh(&conn->cmd_lock);
+ if (!list_empty(&cmd->i_conn_node))
+ list_del_init(&cmd->i_conn_node);
+ spin_unlock_bh(&conn->cmd_lock);
+
+ __iscsit_free_cmd(cmd, scsi_cmd, true);
+}
+
static struct iscsit_transport iscsi_target_transport = {
.name = "iSCSI/TCP",
.transport_type = ISCSI_TCP,
@@ -513,6 +525,7 @@ static struct iscsit_transport iscsi_target_transport = {
.iscsit_response_queue = iscsit_response_queue,
.iscsit_queue_data_in = iscsit_queue_rsp,
.iscsit_queue_status = iscsit_queue_rsp,
+ .iscsit_aborted_task = iscsit_aborted_task,
};
static int __init iscsi_target_init_module(void)
diff --git a/drivers/target/iscsi/iscsi_target_configfs.c b/drivers/target/iscsi/iscsi_target_configfs.c
index fe35dcbacb14..ae03f3e5de1e 100644
--- a/drivers/target/iscsi/iscsi_target_configfs.c
+++ b/drivers/target/iscsi/iscsi_target_configfs.c
@@ -1821,6 +1821,13 @@ static void lio_queue_tm_rsp(struct se_cmd *se_cmd)
iscsit_add_cmd_to_response_queue(cmd, cmd->conn, cmd->i_state);
}
+static void lio_aborted_task(struct se_cmd *se_cmd)
+{
+ struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
+
+ cmd->conn->conn_transport->iscsit_aborted_task(cmd->conn, cmd);
+}
+
static char *lio_tpg_get_endpoint_wwn(struct se_portal_group *se_tpg)
{
struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
@@ -2005,6 +2012,7 @@ int iscsi_target_register_configfs(void)
fabric->tf_ops.queue_data_in = &lio_queue_data_in;
fabric->tf_ops.queue_status = &lio_queue_status;
fabric->tf_ops.queue_tm_rsp = &lio_queue_tm_rsp;
+ fabric->tf_ops.aborted_task = &lio_aborted_task;
/*
* Setup function pointers for generic logic in target_core_fabric_configfs.c
*/
diff --git a/drivers/target/iscsi/iscsi_target_util.c b/drivers/target/iscsi/iscsi_target_util.c
index e655b042ed18..53e157cb8c54 100644
--- a/drivers/target/iscsi/iscsi_target_util.c
+++ b/drivers/target/iscsi/iscsi_target_util.c
@@ -705,8 +705,8 @@ void iscsit_release_cmd(struct iscsi_cmd *cmd)
}
EXPORT_SYMBOL(iscsit_release_cmd);
-static void __iscsit_free_cmd(struct iscsi_cmd *cmd, bool scsi_cmd,
- bool check_queues)
+void __iscsit_free_cmd(struct iscsi_cmd *cmd, bool scsi_cmd,
+ bool check_queues)
{
struct iscsi_conn *conn = cmd->conn;
diff --git a/drivers/target/iscsi/iscsi_target_util.h b/drivers/target/iscsi/iscsi_target_util.h
index 561a424d1980..a68508c4fec8 100644
--- a/drivers/target/iscsi/iscsi_target_util.h
+++ b/drivers/target/iscsi/iscsi_target_util.h
@@ -30,6 +30,7 @@ extern void iscsit_remove_cmd_from_tx_queues(struct iscsi_cmd *, struct iscsi_co
extern bool iscsit_conn_all_queues_empty(struct iscsi_conn *);
extern void iscsit_free_queue_reqs_for_conn(struct iscsi_conn *);
extern void iscsit_release_cmd(struct iscsi_cmd *);
+extern void __iscsit_free_cmd(struct iscsi_cmd *, bool, bool);
extern void iscsit_free_cmd(struct iscsi_cmd *, bool);
extern int iscsit_check_session_usage_count(struct iscsi_session *);
extern void iscsit_dec_session_usage_count(struct iscsi_session *);
diff --git a/drivers/target/loopback/tcm_loop.c b/drivers/target/loopback/tcm_loop.c
index a49ef0a49fa9..bdc1ad82d293 100644
--- a/drivers/target/loopback/tcm_loop.c
+++ b/drivers/target/loopback/tcm_loop.c
@@ -919,6 +919,11 @@ static void tcm_loop_queue_tm_rsp(struct se_cmd *se_cmd)
wake_up(&tl_tmr->tl_tmr_wait);
}
+static void tcm_loop_aborted_task(struct se_cmd *se_cmd)
+{
+ return;
+}
+
static char *tcm_loop_dump_proto_id(struct tcm_loop_hba *tl_hba)
{
switch (tl_hba->tl_proto_id) {
@@ -1487,6 +1492,7 @@ static int tcm_loop_register_configfs(void)
fabric->tf_ops.queue_data_in = &tcm_loop_queue_data_in;
fabric->tf_ops.queue_status = &tcm_loop_queue_status;
fabric->tf_ops.queue_tm_rsp = &tcm_loop_queue_tm_rsp;
+ fabric->tf_ops.aborted_task = &tcm_loop_aborted_task;
/*
* Setup function pointers for generic logic in target_core_fabric_configfs.c
diff --git a/drivers/target/sbp/sbp_target.c b/drivers/target/sbp/sbp_target.c
index 24884cac19ce..ad04ea928e4f 100644
--- a/drivers/target/sbp/sbp_target.c
+++ b/drivers/target/sbp/sbp_target.c
@@ -1846,6 +1846,11 @@ static void sbp_queue_tm_rsp(struct se_cmd *se_cmd)
{
}
+static void sbp_aborted_task(struct se_cmd *se_cmd)
+{
+ return;
+}
+
static int sbp_check_stop_free(struct se_cmd *se_cmd)
{
struct sbp_target_request *req = container_of(se_cmd,
@@ -2526,6 +2531,7 @@ static struct target_core_fabric_ops sbp_ops = {
.queue_data_in = sbp_queue_data_in,
.queue_status = sbp_queue_status,
.queue_tm_rsp = sbp_queue_tm_rsp,
+ .aborted_task = sbp_aborted_task,
.check_stop_free = sbp_check_stop_free,
.fabric_make_wwn = sbp_make_tport,
diff --git a/drivers/target/target_core_configfs.c b/drivers/target/target_core_configfs.c
index f0e85b119692..60a9ae6df763 100644
--- a/drivers/target/target_core_configfs.c
+++ b/drivers/target/target_core_configfs.c
@@ -457,6 +457,10 @@ static int target_fabric_tf_ops_check(
pr_err("Missing tfo->queue_tm_rsp()\n");
return -EINVAL;
}
+ if (!tfo->aborted_task) {
+ pr_err("Missing tfo->aborted_task()\n");
+ return -EINVAL;
+ }
/*
* We at least require tfo->fabric_make_wwn(), tfo->fabric_drop_wwn()
* tfo->fabric_make_tpg() and tfo->fabric_drop_tpg() in
diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c
index 51a375453d9b..9393544fb471 100644
--- a/drivers/target/target_core_transport.c
+++ b/drivers/target/target_core_transport.c
@@ -605,6 +605,12 @@ void transport_cmd_finish_abort(struct se_cmd *cmd, int remove)
{
if (cmd->se_cmd_flags & SCF_SE_LUN_CMD)
transport_lun_remove_cmd(cmd);
+ /*
+ * Allow the fabric driver to unmap any resources before
+ * releasing the descriptor via TFO->release_cmd()
+ */
+ if (remove)
+ cmd->se_tfo->aborted_task(cmd);
if (transport_cmd_check_stop_to_fabric(cmd))
return;
diff --git a/drivers/target/tcm_fc/tcm_fc.h b/drivers/target/tcm_fc/tcm_fc.h
index 752863acecb8..4f4b97161228 100644
--- a/drivers/target/tcm_fc/tcm_fc.h
+++ b/drivers/target/tcm_fc/tcm_fc.h
@@ -163,6 +163,7 @@ 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 *);
/*
* other internal functions.
diff --git a/drivers/target/tcm_fc/tfc_cmd.c b/drivers/target/tcm_fc/tfc_cmd.c
index 8b2c1aaf81de..01cf37f212c3 100644
--- a/drivers/target/tcm_fc/tfc_cmd.c
+++ b/drivers/target/tcm_fc/tfc_cmd.c
@@ -426,6 +426,11 @@ void ft_queue_tm_resp(struct se_cmd *se_cmd)
ft_send_resp_code(cmd, code);
}
+void ft_aborted_task(struct se_cmd *se_cmd)
+{
+ return;
+}
+
static void ft_send_work(struct work_struct *work);
/*
diff --git a/drivers/target/tcm_fc/tfc_conf.c b/drivers/target/tcm_fc/tfc_conf.c
index e879da81ad93..b8b5a719a784 100644
--- a/drivers/target/tcm_fc/tfc_conf.c
+++ b/drivers/target/tcm_fc/tfc_conf.c
@@ -536,6 +536,7 @@ static struct target_core_fabric_ops ft_fabric_ops = {
.queue_data_in = ft_queue_data_in,
.queue_status = ft_queue_status,
.queue_tm_rsp = ft_queue_tm_resp,
+ .aborted_task = ft_aborted_task,
/*
* Setup function pointers for generic logic in
* target_core_fabric_configfs.c
diff --git a/drivers/usb/gadget/tcm_usb_gadget.c b/drivers/usb/gadget/tcm_usb_gadget.c
index 0f8aad78b54f..f9afa4a4ec3c 100644
--- a/drivers/usb/gadget/tcm_usb_gadget.c
+++ b/drivers/usb/gadget/tcm_usb_gadget.c
@@ -1471,6 +1471,11 @@ static void usbg_queue_tm_rsp(struct se_cmd *se_cmd)
{
}
+static void usbg_aborted_task(struct se_cmd *se_cmd)
+{
+ return;
+}
+
static const char *usbg_check_wwn(const char *name)
{
const char *n;
@@ -1897,6 +1902,7 @@ static struct target_core_fabric_ops usbg_ops = {
.queue_data_in = usbg_send_read_response,
.queue_status = usbg_send_status_response,
.queue_tm_rsp = usbg_queue_tm_rsp,
+ .aborted_task = usbg_aborted_task,
.check_stop_free = usbg_check_stop_free,
.fabric_make_wwn = usbg_make_tport,
diff --git a/drivers/vhost/scsi.c b/drivers/vhost/scsi.c
index e48d4a672580..4a473355020f 100644
--- a/drivers/vhost/scsi.c
+++ b/drivers/vhost/scsi.c
@@ -539,6 +539,11 @@ static void tcm_vhost_queue_tm_rsp(struct se_cmd *se_cmd)
return;
}
+static void tcm_vhost_aborted_task(struct se_cmd *se_cmd)
+{
+ return;
+}
+
static void tcm_vhost_free_evt(struct vhost_scsi *vs, struct tcm_vhost_evt *evt)
{
vs->vs_events_nr--;
@@ -2131,6 +2136,7 @@ static struct target_core_fabric_ops tcm_vhost_ops = {
.queue_data_in = tcm_vhost_queue_data_in,
.queue_status = tcm_vhost_queue_status,
.queue_tm_rsp = tcm_vhost_queue_tm_rsp,
+ .aborted_task = tcm_vhost_aborted_task,
/*
* Setup callers for generic logic in target_core_fabric_configfs.c
*/
diff --git a/include/target/iscsi/iscsi_transport.h b/include/target/iscsi/iscsi_transport.h
index 4483fadfa68d..8d19339292b8 100644
--- a/include/target/iscsi/iscsi_transport.h
+++ b/include/target/iscsi/iscsi_transport.h
@@ -21,6 +21,7 @@ struct iscsit_transport {
int (*iscsit_get_dataout)(struct iscsi_conn *, struct iscsi_cmd *, bool);
int (*iscsit_queue_data_in)(struct iscsi_conn *, struct iscsi_cmd *);
int (*iscsit_queue_status)(struct iscsi_conn *, struct iscsi_cmd *);
+ void (*iscsit_aborted_task)(struct iscsi_conn *, struct iscsi_cmd *);
};
static inline void *iscsit_priv_cmd(struct iscsi_cmd *cmd)
diff --git a/include/target/target_core_fabric.h b/include/target/target_core_fabric.h
index 0218d689b3d7..1d1043644b9b 100644
--- a/include/target/target_core_fabric.h
+++ b/include/target/target_core_fabric.h
@@ -62,6 +62,7 @@ struct target_core_fabric_ops {
int (*queue_data_in)(struct se_cmd *);
int (*queue_status)(struct se_cmd *);
void (*queue_tm_rsp)(struct se_cmd *);
+ void (*aborted_task)(struct se_cmd *);
/*
* fabric module calls for target_core_fabric_configfs.c
*/