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| author |   Andy Grover <agrover@redhat.com> | 2012-01-19 13:39:21 -0800 |
|---|---|---|
| committer |   Nicholas Bellinger <nab@linux-iscsi.org> | 2012-02-25 14:37:48 -0800 |
| commit | ea98d7f9c7cc38de55f81a1c249112442b93c7c9 (patch) | |
| tree | cd5b136fa5b22ba290a9da8992c486a5d5ff68e8 /drivers/target | |
| parent | tcm_fc: Use transport_generic_free_cmd for ft_sess_put in ft_send_tm (diff) | |
| download | linux-dev-ea98d7f9c7cc38de55f81a1c249112442b93c7c9.tar.xz linux-dev-ea98d7f9c7cc38de55f81a1c249112442b93c7c9.zip | |
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.c | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c index c10c3653eabc..42da7a300729 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 |