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authorAndy Grover <agrover@redhat.com>2012-01-19 13:39:21 -0800
committerNicholas Bellinger <nab@linux-iscsi.org>2012-02-25 14:37:48 -0800
commitea98d7f9c7cc38de55f81a1c249112442b93c7c9 (patch)
treecd5b136fa5b22ba290a9da8992c486a5d5ff68e8 /drivers/target
parenta1321f71e87930579afc4a4029cce128c23f3fd3 (diff)
downloadop-kernel-dev-ea98d7f9c7cc38de55f81a1c249112442b93c7c9.zip
op-kernel-dev-ea98d7f9c7cc38de55f81a1c249112442b93c7c9.tar.gz
target: Add target_submit_tmr helper function
Similar to target_submit_cmd, this function lets fabrics call one function (albeit with a lot of parameters) instead of 3 or more. (nab: Add missing return for transport_lookup_tmr_lun failure) Signed-off-by: Andy Grover <agrover@redhat.com> Cc: Kiran Patil <kiran.patil@intel.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Diffstat (limited to 'drivers/target')
-rw-r--r--drivers/target/target_core_transport.c48
1 files changed, 48 insertions, 0 deletions
diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c
index c10c365..42da7a3 100644
--- a/drivers/target/target_core_transport.c
+++ b/drivers/target/target_core_transport.c
@@ -1687,6 +1687,54 @@ void target_submit_cmd(struct se_cmd *se_cmd, struct se_session *se_sess,
}
EXPORT_SYMBOL(target_submit_cmd);
+/**
+ * target_submit_tmr - lookup unpacked lun and submit uninitialized se_cmd
+ * for TMR CDBs
+ *
+ * @se_cmd: command descriptor to submit
+ * @se_sess: associated se_sess for endpoint
+ * @sense: pointer to SCSI sense buffer
+ * @unpacked_lun: unpacked LUN to reference for struct se_lun
+ * @fabric_context: fabric context for TMR req
+ * @tm_type: Type of TM request
+ *
+ * Callable from all contexts.
+ **/
+
+void target_submit_tmr(struct se_cmd *se_cmd, struct se_session *se_sess,
+ unsigned char *sense, u32 unpacked_lun,
+ void *fabric_tmr_ptr, unsigned char tm_type, int flags)
+{
+ struct se_portal_group *se_tpg;
+ int ret;
+
+ se_tpg = se_sess->se_tpg;
+ BUG_ON(!se_tpg);
+
+ transport_init_se_cmd(se_cmd, se_tpg->se_tpg_tfo, se_sess,
+ 0, DMA_NONE, MSG_SIMPLE_TAG, sense);
+
+ /* See target_submit_cmd for commentary */
+ target_get_sess_cmd(se_sess, se_cmd, (flags & TARGET_SCF_ACK_KREF));
+
+ ret = core_tmr_alloc_req(se_cmd, fabric_tmr_ptr, tm_type, GFP_KERNEL);
+ if (ret < 0) {
+ dump_stack();
+ /* FIXME XXX */
+ return;
+ }
+
+ ret = transport_lookup_tmr_lun(se_cmd, unpacked_lun);
+ if (ret) {
+ transport_send_check_condition_and_sense(se_cmd,
+ se_cmd->scsi_sense_reason, 0);
+ transport_generic_free_cmd(se_cmd, 0);
+ return;
+ }
+ transport_generic_handle_tmr(se_cmd);
+}
+EXPORT_SYMBOL(target_submit_tmr);
+
/*
* Used by fabric module frontends defining a TFO->new_cmd_map() caller
* to queue up a newly setup se_cmd w/ TRANSPORT_NEW_CMD_MAP in order to
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