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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 /drivers/infiniband
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>
Diffstat (limited to 'drivers/infiniband')
-rw-r--r--drivers/infiniband/ulp/isert/ib_isert.c19
-rw-r--r--drivers/infiniband/ulp/srpt/ib_srpt.c9
2 files changed, 28 insertions, 0 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