diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2016-05-28 19:04:17 (GMT) |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-05-28 19:04:17 (GMT) |
commit | 9ba55cf7cfbfd12a7e914d0d55b7581e896b3f0d (patch) | |
tree | f53dba839ff2faa2fff1878b091bbe5017951f4a /drivers/scsi/qla2xxx | |
parent | 1cbe06c3cf542d48eb22180163e00f91760ef8cd (diff) | |
parent | 8f0dfb3d8b1120c61f6e2cc3729290db10772b2d (diff) | |
download | linux-9ba55cf7cfbfd12a7e914d0d55b7581e896b3f0d.tar.xz |
Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending
Pull SCSI target updates from Nicholas Bellinger:
"Here are the outstanding target pending updates for v4.7-rc1.
The highlights this round include:
- Allow external PR/ALUA metadata path be defined at runtime via top
level configfs attribute (Lee)
- Fix target session shutdown bug for ib_srpt multi-channel (hch)
- Make TFO close_session() and shutdown_session() optional (hch)
- Drop se_sess->sess_kref + convert tcm_qla2xxx to internal kref
(hch)
- Add tcm_qla2xxx endpoint attribute for basic FC jammer (Laurence)
- Refactor iscsi-target RX/TX PDU encode/decode into common code
(Varun)
- Extend iscsit_transport with xmit_pdu, release_cmd, get_rx_pdu,
validate_parameters, and get_r2t_ttt for generic ISO offload
(Varun)
- Initial merge of cxgb iscsi-segment offload target driver (Varun)
The bulk of the changes are Chelsio's new driver, along with a number
of iscsi-target common code improvements made by Varun + Co along the
way"
* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending: (29 commits)
iscsi-target: Fix early sk_data_ready LOGIN_FLAGS_READY race
cxgbit: Use type ISCSI_CXGBIT + cxgbit tpg_np attribute
iscsi-target: Convert transport drivers to signal rdma_shutdown
iscsi-target: Make iscsi_tpg_np driver show/store use generic code
tcm_qla2xxx Add SCSI command jammer/discard capability
iscsi-target: graceful disconnect on invalid mapping to iovec
target: need_to_release is always false, remove redundant check and kfree
target: remove sess_kref and ->shutdown_session
iscsi-target: remove usage of ->shutdown_session
tcm_qla2xxx: introduce a private sess_kref
target: make close_session optional
target: make ->shutdown_session optional
target: remove acl_stop
target: consolidate and fix session shutdown
cxgbit: add files for cxgbit.ko
iscsi-target: export symbols
iscsi-target: call complete on conn_logout_comp
iscsi-target: clear tx_thread_active
iscsi-target: add new offload transport type
iscsi-target: use conn_transport->transport_type in text rsp
...
Diffstat (limited to 'drivers/scsi/qla2xxx')
-rw-r--r-- | drivers/scsi/qla2xxx/Kconfig | 9 | ||||
-rw-r--r-- | drivers/scsi/qla2xxx/qla_target.c | 56 | ||||
-rw-r--r-- | drivers/scsi/qla2xxx/qla_target.h | 4 | ||||
-rw-r--r-- | drivers/scsi/qla2xxx/tcm_qla2xxx.c | 59 | ||||
-rw-r--r-- | drivers/scsi/qla2xxx/tcm_qla2xxx.h | 1 |
5 files changed, 65 insertions, 64 deletions
diff --git a/drivers/scsi/qla2xxx/Kconfig b/drivers/scsi/qla2xxx/Kconfig index 10aa18b..67c0d5a 100644 --- a/drivers/scsi/qla2xxx/Kconfig +++ b/drivers/scsi/qla2xxx/Kconfig @@ -36,3 +36,12 @@ config TCM_QLA2XXX default n ---help--- Say Y here to enable the TCM_QLA2XXX fabric module for QLogic 24xx+ series target mode HBAs + +if TCM_QLA2XXX +config TCM_QLA2XXX_DEBUG + bool "TCM_QLA2XXX fabric module DEBUG mode for QLogic 24xx+ series target mode HBAs" + default n + ---help--- + Say Y here to enable the TCM_QLA2XXX fabric module DEBUG for QLogic 24xx+ series target mode HBAs + This will include code to enable the SCSI command jammer +endif diff --git a/drivers/scsi/qla2xxx/qla_target.c b/drivers/scsi/qla2xxx/qla_target.c index 8a44d15..ca39deb 100644 --- a/drivers/scsi/qla2xxx/qla_target.c +++ b/drivers/scsi/qla2xxx/qla_target.c @@ -637,8 +637,10 @@ static void qlt_free_session_done(struct work_struct *work) } /* ha->tgt.sess_lock supposed to be held on entry */ -void qlt_unreg_sess(struct qla_tgt_sess *sess) +static void qlt_release_session(struct kref *kref) { + struct qla_tgt_sess *sess = + container_of(kref, struct qla_tgt_sess, sess_kref); struct scsi_qla_host *vha = sess->vha; if (sess->se_sess) @@ -651,8 +653,16 @@ void qlt_unreg_sess(struct qla_tgt_sess *sess) INIT_WORK(&sess->free_work, qlt_free_session_done); schedule_work(&sess->free_work); } -EXPORT_SYMBOL(qlt_unreg_sess); +void qlt_put_sess(struct qla_tgt_sess *sess) +{ + if (!sess) + return; + + assert_spin_locked(&sess->vha->hw->tgt.sess_lock); + kref_put(&sess->sess_kref, qlt_release_session); +} +EXPORT_SYMBOL(qlt_put_sess); static int qlt_reset(struct scsi_qla_host *vha, void *iocb, int mcmd) { @@ -857,12 +867,9 @@ static void qlt_del_sess_work_fn(struct delayed_work *work) ql_dbg(ql_dbg_tgt_mgt, vha, 0xf004, "Timeout: sess %p about to be deleted\n", sess); - if (sess->se_sess) { + if (sess->se_sess) ha->tgt.tgt_ops->shutdown_sess(sess); - ha->tgt.tgt_ops->put_sess(sess); - } else { - qlt_unreg_sess(sess); - } + qlt_put_sess(sess); } else { schedule_delayed_work(&tgt->sess_del_work, sess->expires - elapsed); @@ -917,7 +924,7 @@ static struct qla_tgt_sess *qlt_create_sess( } } - kref_get(&sess->se_sess->sess_kref); + kref_get(&sess->sess_kref); ha->tgt.tgt_ops->update_sess(sess, fcport->d_id, fcport->loop_id, (fcport->flags & FCF_CONF_COMP_SUPPORTED)); @@ -947,6 +954,7 @@ static struct qla_tgt_sess *qlt_create_sess( sess->s_id = fcport->d_id; sess->loop_id = fcport->loop_id; sess->local = local; + kref_init(&sess->sess_kref); INIT_LIST_HEAD(&sess->del_list_entry); /* Under normal circumstances we want to logout from firmware when @@ -991,7 +999,7 @@ static struct qla_tgt_sess *qlt_create_sess( * Take an extra reference to ->sess_kref here to handle qla_tgt_sess * access across ->tgt.sess_lock reaquire. */ - kref_get(&sess->se_sess->sess_kref); + kref_get(&sess->sess_kref); } return sess; @@ -1035,7 +1043,7 @@ void qlt_fc_port_added(struct scsi_qla_host *vha, fc_port_t *fcport) spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); return; } else { - kref_get(&sess->se_sess->sess_kref); + kref_get(&sess->sess_kref); if (sess->deleted) { qlt_undelete_sess(sess); @@ -1060,7 +1068,7 @@ void qlt_fc_port_added(struct scsi_qla_host *vha, fc_port_t *fcport) fcport->port_name, sess->loop_id); sess->local = 0; } - ha->tgt.tgt_ops->put_sess(sess); + qlt_put_sess(sess); spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); } @@ -3817,7 +3825,7 @@ static void __qlt_do_work(struct qla_tgt_cmd *cmd) * Drop extra session reference from qla_tgt_handle_cmd_for_atio*( */ spin_lock_irqsave(&ha->tgt.sess_lock, flags); - ha->tgt.tgt_ops->put_sess(sess); + qlt_put_sess(sess); spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); return; @@ -3836,7 +3844,7 @@ out_term: spin_unlock_irqrestore(&ha->hardware_lock, flags); spin_lock_irqsave(&ha->tgt.sess_lock, flags); - ha->tgt.tgt_ops->put_sess(sess); + qlt_put_sess(sess); spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); } @@ -3936,13 +3944,13 @@ static void qlt_create_sess_from_atio(struct work_struct *work) if (!cmd) { spin_lock_irqsave(&ha->hardware_lock, flags); qlt_send_busy(vha, &op->atio, SAM_STAT_BUSY); - ha->tgt.tgt_ops->put_sess(sess); + qlt_put_sess(sess); spin_unlock_irqrestore(&ha->hardware_lock, flags); kfree(op); return; } /* - * __qlt_do_work() will call ha->tgt.tgt_ops->put_sess() to release + * __qlt_do_work() will call qlt_put_sess() to release * the extra reference taken above by qlt_make_local_sess() */ __qlt_do_work(cmd); @@ -4003,13 +4011,13 @@ static int qlt_handle_cmd_for_atio(struct scsi_qla_host *vha, /* * Do kref_get() before returning + dropping qla_hw_data->hardware_lock. */ - kref_get(&sess->se_sess->sess_kref); + kref_get(&sess->sess_kref); cmd = qlt_get_tag(vha, sess, atio); if (!cmd) { ql_dbg(ql_dbg_io, vha, 0x3062, "qla_target(%d): Allocation of cmd failed\n", vha->vp_idx); - ha->tgt.tgt_ops->put_sess(sess); + qlt_put_sess(sess); return -ENOMEM; } @@ -5911,7 +5919,7 @@ static void qlt_abort_work(struct qla_tgt *tgt, goto out_term2; } - kref_get(&sess->se_sess->sess_kref); + kref_get(&sess->sess_kref); } spin_lock_irqsave(&ha->hardware_lock, flags); @@ -5924,7 +5932,7 @@ static void qlt_abort_work(struct qla_tgt *tgt, goto out_term; spin_unlock_irqrestore(&ha->hardware_lock, flags); - ha->tgt.tgt_ops->put_sess(sess); + qlt_put_sess(sess); spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2); return; @@ -5935,8 +5943,7 @@ out_term: qlt_24xx_send_abts_resp(vha, &prm->abts, FCP_TMF_REJECTED, false); spin_unlock_irqrestore(&ha->hardware_lock, flags); - if (sess) - ha->tgt.tgt_ops->put_sess(sess); + qlt_put_sess(sess); spin_unlock_irqrestore(&ha->tgt.sess_lock, flags2); } @@ -5976,7 +5983,7 @@ static void qlt_tmr_work(struct qla_tgt *tgt, goto out_term; } - kref_get(&sess->se_sess->sess_kref); + kref_get(&sess->sess_kref); } iocb = a; @@ -5988,14 +5995,13 @@ static void qlt_tmr_work(struct qla_tgt *tgt, if (rc != 0) goto out_term; - ha->tgt.tgt_ops->put_sess(sess); + qlt_put_sess(sess); spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); return; out_term: qlt_send_term_exchange(vha, NULL, &prm->tm_iocb2, 1, 0); - if (sess) - ha->tgt.tgt_ops->put_sess(sess); + qlt_put_sess(sess); spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); } diff --git a/drivers/scsi/qla2xxx/qla_target.h b/drivers/scsi/qla2xxx/qla_target.h index d857fee..f26c5f6 100644 --- a/drivers/scsi/qla2xxx/qla_target.h +++ b/drivers/scsi/qla2xxx/qla_target.h @@ -738,7 +738,6 @@ struct qla_tgt_func_tmpl { struct qla_tgt_sess *(*find_sess_by_s_id)(struct scsi_qla_host *, const uint8_t *); void (*clear_nacl_from_fcport_map)(struct qla_tgt_sess *); - void (*put_sess)(struct qla_tgt_sess *); void (*shutdown_sess)(struct qla_tgt_sess *); }; @@ -930,6 +929,7 @@ struct qla_tgt_sess { int generation; struct se_session *se_sess; + struct kref sess_kref; struct scsi_qla_host *vha; struct qla_tgt *tgt; @@ -1101,7 +1101,7 @@ extern int qlt_remove_target(struct qla_hw_data *, struct scsi_qla_host *); extern int qlt_lport_register(void *, u64, u64, u64, int (*callback)(struct scsi_qla_host *, void *, u64, u64)); extern void qlt_lport_deregister(struct scsi_qla_host *); -extern void qlt_unreg_sess(struct qla_tgt_sess *); +void qlt_put_sess(struct qla_tgt_sess *sess); extern void qlt_fc_port_added(struct scsi_qla_host *, fc_port_t *); extern void qlt_fc_port_deleted(struct scsi_qla_host *, fc_port_t *, int); extern int __init qlt_init(void); diff --git a/drivers/scsi/qla2xxx/tcm_qla2xxx.c b/drivers/scsi/qla2xxx/tcm_qla2xxx.c index c1461d2..6643f6f 100644 --- a/drivers/scsi/qla2xxx/tcm_qla2xxx.c +++ b/drivers/scsi/qla2xxx/tcm_qla2xxx.c @@ -339,22 +339,6 @@ static void tcm_qla2xxx_release_cmd(struct se_cmd *se_cmd) qlt_free_cmd(cmd); } -static int tcm_qla2xxx_shutdown_session(struct se_session *se_sess) -{ - struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr; - struct scsi_qla_host *vha; - unsigned long flags; - - BUG_ON(!sess); - vha = sess->vha; - - spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); - target_sess_cmd_list_set_waiting(se_sess); - spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); - - return 1; -} - static void tcm_qla2xxx_close_session(struct se_session *se_sess) { struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr; @@ -365,7 +349,8 @@ static void tcm_qla2xxx_close_session(struct se_session *se_sess) vha = sess->vha; spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); - qlt_unreg_sess(sess); + target_sess_cmd_list_set_waiting(se_sess); + qlt_put_sess(sess); spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); } @@ -457,6 +442,10 @@ static int tcm_qla2xxx_handle_cmd(scsi_qla_host_t *vha, struct qla_tgt_cmd *cmd, struct se_cmd *se_cmd = &cmd->se_cmd; struct se_session *se_sess; struct qla_tgt_sess *sess; +#ifdef CONFIG_TCM_QLA2XXX_DEBUG + struct se_portal_group *se_tpg; + struct tcm_qla2xxx_tpg *tpg; +#endif int flags = TARGET_SCF_ACK_KREF; if (bidi) @@ -477,6 +466,15 @@ static int tcm_qla2xxx_handle_cmd(scsi_qla_host_t *vha, struct qla_tgt_cmd *cmd, return -EINVAL; } +#ifdef CONFIG_TCM_QLA2XXX_DEBUG + se_tpg = se_sess->se_tpg; + tpg = container_of(se_tpg, struct tcm_qla2xxx_tpg, se_tpg); + if (unlikely(tpg->tpg_attrib.jam_host)) { + /* return, and dont run target_submit_cmd,discarding command */ + return 0; + } +#endif + cmd->vha->tgt_counters.qla_core_sbt_cmd++; return target_submit_cmd(se_cmd, se_sess, cdb, &cmd->sense_buffer[0], cmd->unpacked_lun, data_length, fcp_task_attr, @@ -758,23 +756,6 @@ static void tcm_qla2xxx_clear_nacl_from_fcport_map(struct qla_tgt_sess *sess) tcm_qla2xxx_clear_sess_lookup(lport, nacl, sess); } -static void tcm_qla2xxx_release_session(struct kref *kref) -{ - struct se_session *se_sess = container_of(kref, - struct se_session, sess_kref); - - qlt_unreg_sess(se_sess->fabric_sess_ptr); -} - -static void tcm_qla2xxx_put_sess(struct qla_tgt_sess *sess) -{ - if (!sess) - return; - - assert_spin_locked(&sess->vha->hw->tgt.sess_lock); - kref_put(&sess->se_sess->sess_kref, tcm_qla2xxx_release_session); -} - static void tcm_qla2xxx_shutdown_sess(struct qla_tgt_sess *sess) { assert_spin_locked(&sess->vha->hw->tgt.sess_lock); @@ -844,6 +825,9 @@ DEF_QLA_TPG_ATTRIB(cache_dynamic_acls); DEF_QLA_TPG_ATTRIB(demo_mode_write_protect); DEF_QLA_TPG_ATTRIB(prod_mode_write_protect); DEF_QLA_TPG_ATTRIB(demo_mode_login_only); +#ifdef CONFIG_TCM_QLA2XXX_DEBUG +DEF_QLA_TPG_ATTRIB(jam_host); +#endif static struct configfs_attribute *tcm_qla2xxx_tpg_attrib_attrs[] = { &tcm_qla2xxx_tpg_attrib_attr_generate_node_acls, @@ -851,6 +835,9 @@ static struct configfs_attribute *tcm_qla2xxx_tpg_attrib_attrs[] = { &tcm_qla2xxx_tpg_attrib_attr_demo_mode_write_protect, &tcm_qla2xxx_tpg_attrib_attr_prod_mode_write_protect, &tcm_qla2xxx_tpg_attrib_attr_demo_mode_login_only, +#ifdef CONFIG_TCM_QLA2XXX_DEBUG + &tcm_qla2xxx_tpg_attrib_attr_jam_host, +#endif NULL, }; @@ -1023,6 +1010,7 @@ static struct se_portal_group *tcm_qla2xxx_make_tpg( tpg->tpg_attrib.demo_mode_write_protect = 1; tpg->tpg_attrib.cache_dynamic_acls = 1; tpg->tpg_attrib.demo_mode_login_only = 1; + tpg->tpg_attrib.jam_host = 0; ret = core_tpg_register(wwn, &tpg->se_tpg, SCSI_PROTOCOL_FCP); if (ret < 0) { @@ -1579,7 +1567,6 @@ static struct qla_tgt_func_tmpl tcm_qla2xxx_template = { .find_sess_by_s_id = tcm_qla2xxx_find_sess_by_s_id, .find_sess_by_loop_id = tcm_qla2xxx_find_sess_by_loop_id, .clear_nacl_from_fcport_map = tcm_qla2xxx_clear_nacl_from_fcport_map, - .put_sess = tcm_qla2xxx_put_sess, .shutdown_sess = tcm_qla2xxx_shutdown_sess, }; @@ -1847,7 +1834,6 @@ static const struct target_core_fabric_ops tcm_qla2xxx_ops = { .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index, .check_stop_free = tcm_qla2xxx_check_stop_free, .release_cmd = tcm_qla2xxx_release_cmd, - .shutdown_session = tcm_qla2xxx_shutdown_session, .close_session = tcm_qla2xxx_close_session, .sess_get_index = tcm_qla2xxx_sess_get_index, .sess_get_initiator_sid = NULL, @@ -1890,7 +1876,6 @@ static const struct target_core_fabric_ops tcm_qla2xxx_npiv_ops = { .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index, .check_stop_free = tcm_qla2xxx_check_stop_free, .release_cmd = tcm_qla2xxx_release_cmd, - .shutdown_session = tcm_qla2xxx_shutdown_session, .close_session = tcm_qla2xxx_close_session, .sess_get_index = tcm_qla2xxx_sess_get_index, .sess_get_initiator_sid = NULL, diff --git a/drivers/scsi/qla2xxx/tcm_qla2xxx.h b/drivers/scsi/qla2xxx/tcm_qla2xxx.h index 3bbf4cb..37e026a 100644 --- a/drivers/scsi/qla2xxx/tcm_qla2xxx.h +++ b/drivers/scsi/qla2xxx/tcm_qla2xxx.h @@ -34,6 +34,7 @@ struct tcm_qla2xxx_tpg_attrib { int prod_mode_write_protect; int demo_mode_login_only; int fabric_prot_type; + int jam_host; }; struct tcm_qla2xxx_tpg { |