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author | Linus Torvalds <torvalds@linux-foundation.org> | 2009-09-14 17:53:36 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-09-14 17:53:36 -0700 |
commit | 39695224bd84dc4be29abad93a0ec232a16fc519 (patch) | |
tree | 2bfa5cb50788a4c8be9f2e9f4412e47a565f4508 /drivers/s390/scsi/zfcp_fc.c | |
parent | a9bbd210a44102cc50b30a5f3d111dbf5f2f9cd4 (diff) | |
parent | ea038f63ac52439e7816295fa6064fe95e6c1f51 (diff) | |
download | kernel_samsung_smdk4412-39695224bd84dc4be29abad93a0ec232a16fc519.zip kernel_samsung_smdk4412-39695224bd84dc4be29abad93a0ec232a16fc519.tar.gz kernel_samsung_smdk4412-39695224bd84dc4be29abad93a0ec232a16fc519.tar.bz2 |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: (209 commits)
[SCSI] fix oops during scsi scanning
[SCSI] libsrp: fix memory leak in srp_ring_free()
[SCSI] libiscsi, bnx2i: make bound ep check common
[SCSI] libiscsi: add completion function for drivers that do not need pdu processing
[SCSI] scsi_dh_rdac: changes for rdac debug logging
[SCSI] scsi_dh_rdac: changes to collect the rdac debug information during the initialization
[SCSI] scsi_dh_rdac: move the init code from rdac_activate to rdac_bus_attach
[SCSI] sg: fix oops in the error path in sg_build_indirect()
[SCSI] mptsas : Bump version to 3.04.12
[SCSI] mptsas : FW event thread and scsi mid layer deadlock in SYNCHRONIZE CACHE command
[SCSI] mptsas : Send DID_NO_CONNECT for pending IOs of removed device
[SCSI] mptsas : PAE Kernel more than 4 GB kernel panic
[SCSI] mptsas : NULL pointer on big endian systems causing Expander not to tear off
[SCSI] mptsas : Sanity check for phyinfo is added
[SCSI] scsi_dh_rdac: Add support for Sun StorageTek ST2500, ST2510 and ST2530
[SCSI] pmcraid: PMC-Sierra MaxRAID driver to support 6Gb/s SAS RAID controller
[SCSI] qla2xxx: Update version number to 8.03.01-k6.
[SCSI] qla2xxx: Properly delete rports attached to a vport.
[SCSI] qla2xxx: Correct various NPIV issues.
[SCSI] qla2xxx: Correct qla2x00_eh_wait_on_command() to wait correctly.
...
Diffstat (limited to 'drivers/s390/scsi/zfcp_fc.c')
-rw-r--r-- | drivers/s390/scsi/zfcp_fc.c | 176 |
1 files changed, 109 insertions, 67 deletions
diff --git a/drivers/s390/scsi/zfcp_fc.c b/drivers/s390/scsi/zfcp_fc.c index 47daebf..722f22d 100644 --- a/drivers/s390/scsi/zfcp_fc.c +++ b/drivers/s390/scsi/zfcp_fc.c @@ -25,14 +25,6 @@ static u32 rscn_range_mask[] = { [RSCN_FABRIC_ADDRESS] = 0x000000, }; -struct ct_iu_gpn_ft_req { - struct ct_hdr header; - u8 flags; - u8 domain_id_scope; - u8 area_id_scope; - u8 fc4_type; -} __attribute__ ((packed)); - struct gpn_ft_resp_acc { u8 control; u8 port_id[3]; @@ -65,7 +57,7 @@ struct zfcp_fc_ns_handler_data { unsigned long handler_data; }; -static int zfcp_wka_port_get(struct zfcp_wka_port *wka_port) +static int zfcp_fc_wka_port_get(struct zfcp_wka_port *wka_port) { if (mutex_lock_interruptible(&wka_port->mutex)) return -ERESTARTSYS; @@ -90,7 +82,7 @@ static int zfcp_wka_port_get(struct zfcp_wka_port *wka_port) return -EIO; } -static void zfcp_wka_port_offline(struct work_struct *work) +static void zfcp_fc_wka_port_offline(struct work_struct *work) { struct delayed_work *dw = to_delayed_work(work); struct zfcp_wka_port *wka_port = @@ -110,7 +102,7 @@ out: mutex_unlock(&wka_port->mutex); } -static void zfcp_wka_port_put(struct zfcp_wka_port *wka_port) +static void zfcp_fc_wka_port_put(struct zfcp_wka_port *wka_port) { if (atomic_dec_return(&wka_port->refcount) != 0) return; @@ -129,10 +121,10 @@ static void zfcp_fc_wka_port_init(struct zfcp_wka_port *wka_port, u32 d_id, wka_port->status = ZFCP_WKA_PORT_OFFLINE; atomic_set(&wka_port->refcount, 0); mutex_init(&wka_port->mutex); - INIT_DELAYED_WORK(&wka_port->work, zfcp_wka_port_offline); + INIT_DELAYED_WORK(&wka_port->work, zfcp_fc_wka_port_offline); } -void zfcp_fc_wka_port_force_offline(struct zfcp_wka_port *wka) +static void zfcp_fc_wka_port_force_offline(struct zfcp_wka_port *wka) { cancel_delayed_work_sync(&wka->work); mutex_lock(&wka->mutex); @@ -140,15 +132,13 @@ void zfcp_fc_wka_port_force_offline(struct zfcp_wka_port *wka) mutex_unlock(&wka->mutex); } -void zfcp_fc_wka_ports_init(struct zfcp_adapter *adapter) +void zfcp_fc_wka_ports_force_offline(struct zfcp_wka_ports *gs) { - struct zfcp_wka_ports *gs = adapter->gs; - - zfcp_fc_wka_port_init(&gs->ms, FC_FID_MGMT_SERV, adapter); - zfcp_fc_wka_port_init(&gs->ts, FC_FID_TIME_SERV, adapter); - zfcp_fc_wka_port_init(&gs->ds, FC_FID_DIR_SERV, adapter); - zfcp_fc_wka_port_init(&gs->as, FC_FID_ALIASES, adapter); - zfcp_fc_wka_port_init(&gs->ks, FC_FID_SEC_KEY, adapter); + zfcp_fc_wka_port_force_offline(&gs->ms); + zfcp_fc_wka_port_force_offline(&gs->ts); + zfcp_fc_wka_port_force_offline(&gs->ds); + zfcp_fc_wka_port_force_offline(&gs->as); + zfcp_fc_wka_port_force_offline(&gs->ks); } static void _zfcp_fc_incoming_rscn(struct zfcp_fsf_req *fsf_req, u32 range, @@ -160,7 +150,7 @@ static void _zfcp_fc_incoming_rscn(struct zfcp_fsf_req *fsf_req, u32 range, read_lock_irqsave(&zfcp_data.config_lock, flags); list_for_each_entry(port, &fsf_req->adapter->port_list_head, list) { if ((port->d_id & range) == (elem->nport_did & range)) - zfcp_test_link(port); + zfcp_fc_test_link(port); if (!port->d_id) zfcp_erp_port_reopen(port, ZFCP_STATUS_COMMON_ERP_FAILED, @@ -241,7 +231,7 @@ void zfcp_fc_incoming_els(struct zfcp_fsf_req *fsf_req) (struct fsf_status_read_buffer *) fsf_req->data; unsigned int els_type = status_buffer->payload.data[0]; - zfcp_san_dbf_event_incoming_els(fsf_req); + zfcp_dbf_san_incoming_els(fsf_req); if (els_type == LS_PLOGI) zfcp_fc_incoming_plogi(fsf_req); else if (els_type == LS_LOGO) @@ -281,19 +271,18 @@ static void zfcp_fc_ns_gid_pn_eval(unsigned long data) port->d_id = ct_iu_resp->d_id & ZFCP_DID_MASK; } -int static zfcp_fc_ns_gid_pn_request(struct zfcp_erp_action *erp_action, +static int zfcp_fc_ns_gid_pn_request(struct zfcp_port *port, struct zfcp_gid_pn_data *gid_pn) { - struct zfcp_adapter *adapter = erp_action->adapter; + struct zfcp_adapter *adapter = port->adapter; struct zfcp_fc_ns_handler_data compl_rec; int ret; /* setup parameters for send generic command */ - gid_pn->port = erp_action->port; + gid_pn->port = port; gid_pn->ct.wka_port = &adapter->gs->ds; gid_pn->ct.handler = zfcp_fc_ns_handler; gid_pn->ct.handler_data = (unsigned long) &compl_rec; - gid_pn->ct.timeout = ZFCP_NS_GID_PN_TIMEOUT; gid_pn->ct.req = &gid_pn->req; gid_pn->ct.resp = &gid_pn->resp; sg_init_one(&gid_pn->req, &gid_pn->ct_iu_req, @@ -308,13 +297,12 @@ int static zfcp_fc_ns_gid_pn_request(struct zfcp_erp_action *erp_action, gid_pn->ct_iu_req.header.options = ZFCP_CT_SYNCHRONOUS; gid_pn->ct_iu_req.header.cmd_rsp_code = ZFCP_CT_GID_PN; gid_pn->ct_iu_req.header.max_res_size = ZFCP_CT_SIZE_ONE_PAGE / 4; - gid_pn->ct_iu_req.wwpn = erp_action->port->wwpn; + gid_pn->ct_iu_req.wwpn = port->wwpn; init_completion(&compl_rec.done); compl_rec.handler = zfcp_fc_ns_gid_pn_eval; compl_rec.handler_data = (unsigned long) gid_pn; - ret = zfcp_fsf_send_ct(&gid_pn->ct, adapter->pool.fsf_req_erp, - erp_action); + ret = zfcp_fsf_send_ct(&gid_pn->ct, adapter->pool.gid_pn_req); if (!ret) wait_for_completion(&compl_rec.done); return ret; @@ -322,33 +310,56 @@ int static zfcp_fc_ns_gid_pn_request(struct zfcp_erp_action *erp_action, /** * zfcp_fc_ns_gid_pn_request - initiate GID_PN nameserver request - * @erp_action: pointer to zfcp_erp_action where GID_PN request is needed + * @port: port where GID_PN request is needed * return: -ENOMEM on error, 0 otherwise */ -int zfcp_fc_ns_gid_pn(struct zfcp_erp_action *erp_action) +static int zfcp_fc_ns_gid_pn(struct zfcp_port *port) { int ret; struct zfcp_gid_pn_data *gid_pn; - struct zfcp_adapter *adapter = erp_action->adapter; + struct zfcp_adapter *adapter = port->adapter; - gid_pn = mempool_alloc(adapter->pool.data_gid_pn, GFP_ATOMIC); + gid_pn = mempool_alloc(adapter->pool.gid_pn_data, GFP_ATOMIC); if (!gid_pn) return -ENOMEM; memset(gid_pn, 0, sizeof(*gid_pn)); - ret = zfcp_wka_port_get(&adapter->gs->ds); + ret = zfcp_fc_wka_port_get(&adapter->gs->ds); if (ret) goto out; - ret = zfcp_fc_ns_gid_pn_request(erp_action, gid_pn); + ret = zfcp_fc_ns_gid_pn_request(port, gid_pn); - zfcp_wka_port_put(&adapter->gs->ds); + zfcp_fc_wka_port_put(&adapter->gs->ds); out: - mempool_free(gid_pn, adapter->pool.data_gid_pn); + mempool_free(gid_pn, adapter->pool.gid_pn_data); return ret; } +void zfcp_fc_port_did_lookup(struct work_struct *work) +{ + int ret; + struct zfcp_port *port = container_of(work, struct zfcp_port, + gid_pn_work); + + ret = zfcp_fc_ns_gid_pn(port); + if (ret) { + /* could not issue gid_pn for some reason */ + zfcp_erp_adapter_reopen(port->adapter, 0, "fcgpn_1", NULL); + goto out; + } + + if (!port->d_id) { + zfcp_erp_port_failed(port, "fcgpn_2", NULL); + goto out; + } + + zfcp_erp_port_reopen(port, 0, "fcgpn_3", NULL); +out: + zfcp_port_put(port); +} + /** * zfcp_fc_plogi_evaluate - evaluate PLOGI playload * @port: zfcp_port structure @@ -404,6 +415,7 @@ static void zfcp_fc_adisc_handler(unsigned long data) /* port is good, unblock rport without going through erp */ zfcp_scsi_schedule_rport_register(port); out: + atomic_clear_mask(ZFCP_STATUS_PORT_LINK_TEST, &port->status); zfcp_port_put(port); kfree(adisc); } @@ -450,28 +462,36 @@ void zfcp_fc_link_test_work(struct work_struct *work) port->rport_task = RPORT_DEL; zfcp_scsi_rport_work(&port->rport_work); + /* only issue one test command at one time per port */ + if (atomic_read(&port->status) & ZFCP_STATUS_PORT_LINK_TEST) + goto out; + + atomic_set_mask(ZFCP_STATUS_PORT_LINK_TEST, &port->status); + retval = zfcp_fc_adisc(port); if (retval == 0) return; /* send of ADISC was not possible */ + atomic_clear_mask(ZFCP_STATUS_PORT_LINK_TEST, &port->status); zfcp_erp_port_forced_reopen(port, 0, "fcltwk1", NULL); +out: zfcp_port_put(port); } /** - * zfcp_test_link - lightweight link test procedure + * zfcp_fc_test_link - lightweight link test procedure * @port: port to be tested * * Test status of a link to a remote port using the ELS command ADISC. * If there is a problem with the remote port, error recovery steps * will be triggered. */ -void zfcp_test_link(struct zfcp_port *port) +void zfcp_fc_test_link(struct zfcp_port *port) { zfcp_port_get(port); - if (!queue_work(zfcp_data.work_queue, &port->test_link_work)) + if (!queue_work(port->adapter->work_queue, &port->test_link_work)) zfcp_port_put(port); } @@ -479,7 +499,7 @@ static void zfcp_free_sg_env(struct zfcp_gpn_ft *gpn_ft, int buf_num) { struct scatterlist *sg = &gpn_ft->sg_req; - kfree(sg_virt(sg)); /* free request buffer */ + kmem_cache_free(zfcp_data.gpn_ft_cache, sg_virt(sg)); zfcp_sg_free_table(gpn_ft->sg_resp, buf_num); kfree(gpn_ft); @@ -494,7 +514,7 @@ static struct zfcp_gpn_ft *zfcp_alloc_sg_env(int buf_num) if (!gpn_ft) return NULL; - req = kzalloc(sizeof(struct ct_iu_gpn_ft_req), GFP_KERNEL); + req = kmem_cache_alloc(zfcp_data.gpn_ft_cache, GFP_KERNEL); if (!req) { kfree(gpn_ft); gpn_ft = NULL; @@ -511,9 +531,8 @@ out: } -static int zfcp_scan_issue_gpn_ft(struct zfcp_gpn_ft *gpn_ft, - struct zfcp_adapter *adapter, - int max_bytes) +static int zfcp_fc_send_gpn_ft(struct zfcp_gpn_ft *gpn_ft, + struct zfcp_adapter *adapter, int max_bytes) { struct zfcp_send_ct *ct = &gpn_ft->ct; struct ct_iu_gpn_ft_req *req = sg_virt(&gpn_ft->sg_req); @@ -536,19 +555,18 @@ static int zfcp_scan_issue_gpn_ft(struct zfcp_gpn_ft *gpn_ft, ct->wka_port = &adapter->gs->ds; ct->handler = zfcp_fc_ns_handler; ct->handler_data = (unsigned long)&compl_rec; - ct->timeout = 10; ct->req = &gpn_ft->sg_req; ct->resp = gpn_ft->sg_resp; init_completion(&compl_rec.done); compl_rec.handler = NULL; - ret = zfcp_fsf_send_ct(ct, NULL, NULL); + ret = zfcp_fsf_send_ct(ct, NULL); if (!ret) wait_for_completion(&compl_rec.done); return ret; } -static void zfcp_validate_port(struct zfcp_port *port) +static void zfcp_fc_validate_port(struct zfcp_port *port) { struct zfcp_adapter *adapter = port->adapter; @@ -568,7 +586,7 @@ static void zfcp_validate_port(struct zfcp_port *port) zfcp_port_dequeue(port); } -static int zfcp_scan_eval_gpn_ft(struct zfcp_gpn_ft *gpn_ft, int max_entries) +static int zfcp_fc_eval_gpn_ft(struct zfcp_gpn_ft *gpn_ft, int max_entries) { struct zfcp_send_ct *ct = &gpn_ft->ct; struct scatterlist *sg = gpn_ft->sg_resp; @@ -595,7 +613,7 @@ static int zfcp_scan_eval_gpn_ft(struct zfcp_gpn_ft *gpn_ft, int max_entries) return -E2BIG; } - down(&zfcp_data.config_sema); + mutex_lock(&zfcp_data.config_mutex); /* first entry is the header */ for (x = 1; x < max_entries && !last; x++) { @@ -628,16 +646,16 @@ static int zfcp_scan_eval_gpn_ft(struct zfcp_gpn_ft *gpn_ft, int max_entries) zfcp_erp_wait(adapter); list_for_each_entry_safe(port, tmp, &adapter->port_list_head, list) - zfcp_validate_port(port); - up(&zfcp_data.config_sema); + zfcp_fc_validate_port(port); + mutex_unlock(&zfcp_data.config_mutex); return ret; } /** - * zfcp_scan_ports - scan remote ports and attach new ports + * zfcp_fc_scan_ports - scan remote ports and attach new ports * @adapter: pointer to struct zfcp_adapter */ -int zfcp_scan_ports(struct zfcp_adapter *adapter) +int zfcp_fc_scan_ports(struct zfcp_adapter *adapter) { int ret, i; struct zfcp_gpn_ft *gpn_ft; @@ -652,7 +670,7 @@ int zfcp_scan_ports(struct zfcp_adapter *adapter) fc_host_port_type(adapter->scsi_host) != FC_PORTTYPE_NPIV) return 0; - ret = zfcp_wka_port_get(&adapter->gs->ds); + ret = zfcp_fc_wka_port_get(&adapter->gs->ds); if (ret) return ret; @@ -663,9 +681,9 @@ int zfcp_scan_ports(struct zfcp_adapter *adapter) } for (i = 0; i < 3; i++) { - ret = zfcp_scan_issue_gpn_ft(gpn_ft, adapter, max_bytes); + ret = zfcp_fc_send_gpn_ft(gpn_ft, adapter, max_bytes); if (!ret) { - ret = zfcp_scan_eval_gpn_ft(gpn_ft, max_entries); + ret = zfcp_fc_eval_gpn_ft(gpn_ft, max_entries); if (ret == -EAGAIN) ssleep(1); else @@ -674,14 +692,14 @@ int zfcp_scan_ports(struct zfcp_adapter *adapter) } zfcp_free_sg_env(gpn_ft, buf_num); out: - zfcp_wka_port_put(&adapter->gs->ds); + zfcp_fc_wka_port_put(&adapter->gs->ds); return ret; } -void _zfcp_scan_ports_later(struct work_struct *work) +void _zfcp_fc_scan_ports_later(struct work_struct *work) { - zfcp_scan_ports(container_of(work, struct zfcp_adapter, scan_work)); + zfcp_fc_scan_ports(container_of(work, struct zfcp_adapter, scan_work)); } struct zfcp_els_fc_job { @@ -732,7 +750,7 @@ int zfcp_fc_execute_els_fc_job(struct fc_bsg_job *job) els_fc_job->els.adapter = adapter; if (rport) { read_lock_irq(&zfcp_data.config_lock); - port = rport->dd_data; + port = zfcp_get_port_by_wwpn(adapter, rport->port_name); if (port) els_fc_job->els.d_id = port->d_id; read_unlock_irq(&zfcp_data.config_lock); @@ -771,7 +789,7 @@ static void zfcp_fc_generic_ct_handler(unsigned long data) job->state_flags = FC_RQST_STATE_DONE; job->job_done(job); - zfcp_wka_port_put(ct_fc_job->ct.wka_port); + zfcp_fc_wka_port_put(ct_fc_job->ct.wka_port); kfree(ct_fc_job); } @@ -817,7 +835,7 @@ int zfcp_fc_execute_ct_fc_job(struct fc_bsg_job *job) return -EINVAL; /* no such service */ } - ret = zfcp_wka_port_get(ct_fc_job->ct.wka_port); + ret = zfcp_fc_wka_port_get(ct_fc_job->ct.wka_port); if (ret) { kfree(ct_fc_job); return ret; @@ -825,16 +843,40 @@ int zfcp_fc_execute_ct_fc_job(struct fc_bsg_job *job) ct_fc_job->ct.req = job->request_payload.sg_list; ct_fc_job->ct.resp = job->reply_payload.sg_list; - ct_fc_job->ct.timeout = ZFCP_FSF_REQUEST_TIMEOUT; ct_fc_job->ct.handler = zfcp_fc_generic_ct_handler; ct_fc_job->ct.handler_data = (unsigned long) ct_fc_job; ct_fc_job->ct.completion = NULL; ct_fc_job->job = job; - ret = zfcp_fsf_send_ct(&ct_fc_job->ct, NULL, NULL); + ret = zfcp_fsf_send_ct(&ct_fc_job->ct, NULL); if (ret) { kfree(ct_fc_job); - zfcp_wka_port_put(ct_fc_job->ct.wka_port); + zfcp_fc_wka_port_put(ct_fc_job->ct.wka_port); } return ret; } + +int zfcp_fc_gs_setup(struct zfcp_adapter *adapter) +{ + struct zfcp_wka_ports *wka_ports; + + wka_ports = kzalloc(sizeof(struct zfcp_wka_ports), GFP_KERNEL); + if (!wka_ports) + return -ENOMEM; + + adapter->gs = wka_ports; + zfcp_fc_wka_port_init(&wka_ports->ms, FC_FID_MGMT_SERV, adapter); + zfcp_fc_wka_port_init(&wka_ports->ts, FC_FID_TIME_SERV, adapter); + zfcp_fc_wka_port_init(&wka_ports->ds, FC_FID_DIR_SERV, adapter); + zfcp_fc_wka_port_init(&wka_ports->as, FC_FID_ALIASES, adapter); + zfcp_fc_wka_port_init(&wka_ports->ks, FC_FID_SEC_KEY, adapter); + + return 0; +} + +void zfcp_fc_gs_destroy(struct zfcp_adapter *adapter) +{ + kfree(adapter->gs); + adapter->gs = NULL; +} + |