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IB/iser: Use libiscsi passthrough mode

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libiscsi passthrough mode invokes the transport xmit calls directly
without first going through an internal queue, unlike the other mode,
which uses a queue and a xmitworker thread.  Now that the "cant_sleep"
prerequisite of iscsi_host_alloc is met, move to use it.  Handling
xmit errors is now done by the passthrough flow of libiscsi.  Since
the queue/worker aren't used in this mode, the code that schedules the
xmitworker is removed.

Signed-off-by: Or Gerlitz <ogerlitz@voltaire.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
This commit is contained in:
Or Gerlitz
2010-02-08 13:22:34 +00:00
committed by Roland Dreier
parent aae3c995ff
commit 962b4b528b
2 changed files with 3 additions and 20 deletions
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11
drivers/infiniband/ulp/iser/iscsi_iser.c
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@@ -190,7 +190,7 @@ iscsi_iser_mtask_xmit(struct iscsi_conn *conn, struct iscsi_task *task)
{
int error = 0;
iser_dbg("task deq [cid %d itt 0x%x]\n", conn->id, task->itt);
iser_dbg("mtask xmit [cid %d itt 0x%x]\n", conn->id, task->itt);
error = iser_send_control(conn, task);
@@ -200,9 +200,6 @@ iscsi_iser_mtask_xmit(struct iscsi_conn *conn, struct iscsi_task *task)
* - if yes, the task is recycled at iscsi_complete_pdu
* - if no, the task is recycled at iser_snd_completion
*/
if (error && error != -ENOBUFS)
iscsi_conn_failure(conn, ISCSI_ERR_CONN_FAILED);
return error;
}
@@ -254,7 +251,7 @@ iscsi_iser_task_xmit(struct iscsi_task *task)
task->imm_count, task->unsol_r2t.data_length);
}
iser_dbg("task deq [cid %d itt 0x%x]\n",
iser_dbg("ctask xmit [cid %d itt 0x%x]\n",
conn->id, task->itt);
/* Send the cmd PDU */
@@ -270,8 +267,6 @@ iscsi_iser_task_xmit(struct iscsi_task *task)
error = iscsi_iser_task_xmit_unsol_data(conn, task);
iscsi_iser_task_xmit_exit:
if (error && error != -ENOBUFS)
iscsi_conn_failure(conn, ISCSI_ERR_CONN_FAILED);
return error;
}
@@ -423,7 +418,7 @@ iscsi_iser_session_create(struct iscsi_endpoint *ep,
struct Scsi_Host *shost;
struct iser_conn *ib_conn;
shost = iscsi_host_alloc(&iscsi_iser_sht, 0, 1);
shost = iscsi_host_alloc(&iscsi_iser_sht, 0, 0);
if (!shost)
return NULL;
shost->transportt = iscsi_iser_scsi_transport;