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author | Linus Torvalds <torvalds@linux-foundation.org> | 2009-12-10 04:42:25 +0100 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-12-10 04:42:25 +0100 |
commit | 382f51fe2f2276344d8a21447656778cdf6583b6 (patch) | |
tree | c2836a2cca4126c9c026ce5aa2fdf9f1c8ccded6 /drivers/s390/scsi/zfcp_fc.c | |
parent | Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ger... (diff) | |
parent | [SCSI] zfcp: Remove flag ZFCP_STATUS_FSFREQ_TMFUNCNOTSUPP (diff) | |
download | linux-382f51fe2f2276344d8a21447656778cdf6583b6.tar.xz linux-382f51fe2f2276344d8a21447656778cdf6583b6.zip |
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: (222 commits)
[SCSI] zfcp: Remove flag ZFCP_STATUS_FSFREQ_TMFUNCNOTSUPP
[SCSI] zfcp: Activate fc4s attributes for zfcp in FC transport class
[SCSI] zfcp: Block scsi_eh thread for rport state BLOCKED
[SCSI] zfcp: Update FSF error reporting
[SCSI] zfcp: Improve ELS ADISC handling
[SCSI] zfcp: Simplify handling of ct and els requests
[SCSI] zfcp: Remove ZFCP_DID_MASK
[SCSI] zfcp: Move WKA port to zfcp FC code
[SCSI] zfcp: Use common code definitions for FC CT structs
[SCSI] zfcp: Use common code definitions for FC ELS structs
[SCSI] zfcp: Update FCP protocol related code
[SCSI] zfcp: Dont fail SCSI commands when transitioning to blocked fc_rport
[SCSI] zfcp: Assign scheduled work to driver queue
[SCSI] zfcp: Remove STATUS_COMMON_REMOVE flag as it is not required anymore
[SCSI] zfcp: Implement module unloading
[SCSI] zfcp: Merge trace code for fsf requests in one function
[SCSI] zfcp: Access ports and units with container_of in sysfs code
[SCSI] zfcp: Remove suspend callback
[SCSI] zfcp: Remove global config_mutex
[SCSI] zfcp: Replace local reference counting with common kref
...
Diffstat (limited to 'drivers/s390/scsi/zfcp_fc.c')
-rw-r--r-- | drivers/s390/scsi/zfcp_fc.c | 677 |
1 files changed, 288 insertions, 389 deletions
diff --git a/drivers/s390/scsi/zfcp_fc.c b/drivers/s390/scsi/zfcp_fc.c index df23bcead23d..ac5e3b7a3576 100644 --- a/drivers/s390/scsi/zfcp_fc.c +++ b/drivers/s390/scsi/zfcp_fc.c @@ -9,73 +9,38 @@ #define KMSG_COMPONENT "zfcp" #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt +#include <linux/types.h> +#include <scsi/fc/fc_els.h> +#include <scsi/libfc.h> #include "zfcp_ext.h" +#include "zfcp_fc.h" -enum rscn_address_format { - RSCN_PORT_ADDRESS = 0x0, - RSCN_AREA_ADDRESS = 0x1, - RSCN_DOMAIN_ADDRESS = 0x2, - RSCN_FABRIC_ADDRESS = 0x3, +static u32 zfcp_fc_rscn_range_mask[] = { + [ELS_ADDR_FMT_PORT] = 0xFFFFFF, + [ELS_ADDR_FMT_AREA] = 0xFFFF00, + [ELS_ADDR_FMT_DOM] = 0xFF0000, + [ELS_ADDR_FMT_FAB] = 0x000000, }; -static u32 rscn_range_mask[] = { - [RSCN_PORT_ADDRESS] = 0xFFFFFF, - [RSCN_AREA_ADDRESS] = 0xFFFF00, - [RSCN_DOMAIN_ADDRESS] = 0xFF0000, - [RSCN_FABRIC_ADDRESS] = 0x000000, -}; - -struct gpn_ft_resp_acc { - u8 control; - u8 port_id[3]; - u8 reserved[4]; - u64 wwpn; -} __attribute__ ((packed)); - -#define ZFCP_CT_SIZE_ONE_PAGE (PAGE_SIZE - sizeof(struct ct_hdr)) -#define ZFCP_GPN_FT_ENTRIES (ZFCP_CT_SIZE_ONE_PAGE \ - / sizeof(struct gpn_ft_resp_acc)) -#define ZFCP_GPN_FT_BUFFERS 4 -#define ZFCP_GPN_FT_MAX_SIZE (ZFCP_GPN_FT_BUFFERS * PAGE_SIZE \ - - sizeof(struct ct_hdr)) -#define ZFCP_GPN_FT_MAX_ENTRIES ZFCP_GPN_FT_BUFFERS * (ZFCP_GPN_FT_ENTRIES + 1) - -struct ct_iu_gpn_ft_resp { - struct ct_hdr header; - struct gpn_ft_resp_acc accept[ZFCP_GPN_FT_ENTRIES]; -} __attribute__ ((packed)); - -struct zfcp_gpn_ft { - struct zfcp_send_ct ct; - struct scatterlist sg_req; - struct scatterlist sg_resp[ZFCP_GPN_FT_BUFFERS]; -}; - -struct zfcp_fc_ns_handler_data { - struct completion done; - void (*handler)(unsigned long); - unsigned long handler_data; -}; - -static int zfcp_fc_wka_port_get(struct zfcp_wka_port *wka_port) +static int zfcp_fc_wka_port_get(struct zfcp_fc_wka_port *wka_port) { if (mutex_lock_interruptible(&wka_port->mutex)) return -ERESTARTSYS; - if (wka_port->status == ZFCP_WKA_PORT_OFFLINE || - wka_port->status == ZFCP_WKA_PORT_CLOSING) { - wka_port->status = ZFCP_WKA_PORT_OPENING; + if (wka_port->status == ZFCP_FC_WKA_PORT_OFFLINE || + wka_port->status == ZFCP_FC_WKA_PORT_CLOSING) { + wka_port->status = ZFCP_FC_WKA_PORT_OPENING; if (zfcp_fsf_open_wka_port(wka_port)) - wka_port->status = ZFCP_WKA_PORT_OFFLINE; + wka_port->status = ZFCP_FC_WKA_PORT_OFFLINE; } mutex_unlock(&wka_port->mutex); wait_event(wka_port->completion_wq, - wka_port->status == ZFCP_WKA_PORT_ONLINE || - wka_port->status == ZFCP_WKA_PORT_OFFLINE); + wka_port->status == ZFCP_FC_WKA_PORT_ONLINE || + wka_port->status == ZFCP_FC_WKA_PORT_OFFLINE); - if (wka_port->status == ZFCP_WKA_PORT_ONLINE) { + if (wka_port->status == ZFCP_FC_WKA_PORT_ONLINE) { atomic_inc(&wka_port->refcount); return 0; } @@ -85,24 +50,24 @@ static int zfcp_fc_wka_port_get(struct zfcp_wka_port *wka_port) 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 = - container_of(dw, struct zfcp_wka_port, work); + struct zfcp_fc_wka_port *wka_port = + container_of(dw, struct zfcp_fc_wka_port, work); mutex_lock(&wka_port->mutex); if ((atomic_read(&wka_port->refcount) != 0) || - (wka_port->status != ZFCP_WKA_PORT_ONLINE)) + (wka_port->status != ZFCP_FC_WKA_PORT_ONLINE)) goto out; - wka_port->status = ZFCP_WKA_PORT_CLOSING; + wka_port->status = ZFCP_FC_WKA_PORT_CLOSING; if (zfcp_fsf_close_wka_port(wka_port)) { - wka_port->status = ZFCP_WKA_PORT_OFFLINE; + wka_port->status = ZFCP_FC_WKA_PORT_OFFLINE; wake_up(&wka_port->completion_wq); } out: mutex_unlock(&wka_port->mutex); } -static void zfcp_fc_wka_port_put(struct zfcp_wka_port *wka_port) +static void zfcp_fc_wka_port_put(struct zfcp_fc_wka_port *wka_port) { if (atomic_dec_return(&wka_port->refcount) != 0) return; @@ -110,7 +75,7 @@ static void zfcp_fc_wka_port_put(struct zfcp_wka_port *wka_port) schedule_delayed_work(&wka_port->work, HZ / 100); } -static void zfcp_fc_wka_port_init(struct zfcp_wka_port *wka_port, u32 d_id, +static void zfcp_fc_wka_port_init(struct zfcp_fc_wka_port *wka_port, u32 d_id, struct zfcp_adapter *adapter) { init_waitqueue_head(&wka_port->completion_wq); @@ -118,107 +83,107 @@ static void zfcp_fc_wka_port_init(struct zfcp_wka_port *wka_port, u32 d_id, wka_port->adapter = adapter; wka_port->d_id = d_id; - wka_port->status = ZFCP_WKA_PORT_OFFLINE; + wka_port->status = ZFCP_FC_WKA_PORT_OFFLINE; atomic_set(&wka_port->refcount, 0); mutex_init(&wka_port->mutex); INIT_DELAYED_WORK(&wka_port->work, zfcp_fc_wka_port_offline); } -static void zfcp_fc_wka_port_force_offline(struct zfcp_wka_port *wka) +static void zfcp_fc_wka_port_force_offline(struct zfcp_fc_wka_port *wka) { cancel_delayed_work_sync(&wka->work); mutex_lock(&wka->mutex); - wka->status = ZFCP_WKA_PORT_OFFLINE; + wka->status = ZFCP_FC_WKA_PORT_OFFLINE; mutex_unlock(&wka->mutex); } -void zfcp_fc_wka_ports_force_offline(struct zfcp_wka_ports *gs) +void zfcp_fc_wka_ports_force_offline(struct zfcp_fc_wka_ports *gs) { + if (!gs) + return; 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, - struct fcp_rscn_element *elem) + struct fc_els_rscn_page *page) { unsigned long flags; + struct zfcp_adapter *adapter = fsf_req->adapter; struct zfcp_port *port; - 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)) + read_lock_irqsave(&adapter->port_list_lock, flags); + list_for_each_entry(port, &adapter->port_list, list) { + if ((port->d_id & range) == (ntoh24(page->rscn_fid) & range)) zfcp_fc_test_link(port); if (!port->d_id) zfcp_erp_port_reopen(port, ZFCP_STATUS_COMMON_ERP_FAILED, "fcrscn1", NULL); } - - read_unlock_irqrestore(&zfcp_data.config_lock, flags); + read_unlock_irqrestore(&adapter->port_list_lock, flags); } static void zfcp_fc_incoming_rscn(struct zfcp_fsf_req *fsf_req) { struct fsf_status_read_buffer *status_buffer = (void *)fsf_req->data; - struct fcp_rscn_head *fcp_rscn_head; - struct fcp_rscn_element *fcp_rscn_element; + struct fc_els_rscn *head; + struct fc_els_rscn_page *page; u16 i; u16 no_entries; - u32 range_mask; + unsigned int afmt; - fcp_rscn_head = (struct fcp_rscn_head *) status_buffer->payload.data; - fcp_rscn_element = (struct fcp_rscn_element *) fcp_rscn_head; + head = (struct fc_els_rscn *) status_buffer->payload.data; + page = (struct fc_els_rscn_page *) head; /* see FC-FS */ - no_entries = fcp_rscn_head->payload_len / - sizeof(struct fcp_rscn_element); + no_entries = head->rscn_plen / sizeof(struct fc_els_rscn_page); for (i = 1; i < no_entries; i++) { /* skip head and start with 1st element */ - fcp_rscn_element++; - range_mask = rscn_range_mask[fcp_rscn_element->addr_format]; - _zfcp_fc_incoming_rscn(fsf_req, range_mask, fcp_rscn_element); + page++; + afmt = page->rscn_page_flags & ELS_RSCN_ADDR_FMT_MASK; + _zfcp_fc_incoming_rscn(fsf_req, zfcp_fc_rscn_range_mask[afmt], + page); } - schedule_work(&fsf_req->adapter->scan_work); + queue_work(fsf_req->adapter->work_queue, &fsf_req->adapter->scan_work); } static void zfcp_fc_incoming_wwpn(struct zfcp_fsf_req *req, u64 wwpn) { + unsigned long flags; struct zfcp_adapter *adapter = req->adapter; struct zfcp_port *port; - unsigned long flags; - read_lock_irqsave(&zfcp_data.config_lock, flags); - list_for_each_entry(port, &adapter->port_list_head, list) - if (port->wwpn == wwpn) + read_lock_irqsave(&adapter->port_list_lock, flags); + list_for_each_entry(port, &adapter->port_list, list) + if (port->wwpn == wwpn) { + zfcp_erp_port_forced_reopen(port, 0, "fciwwp1", req); break; - read_unlock_irqrestore(&zfcp_data.config_lock, flags); - - if (port && (port->wwpn == wwpn)) - zfcp_erp_port_forced_reopen(port, 0, "fciwwp1", req); + } + read_unlock_irqrestore(&adapter->port_list_lock, flags); } static void zfcp_fc_incoming_plogi(struct zfcp_fsf_req *req) { - struct fsf_status_read_buffer *status_buffer = - (struct fsf_status_read_buffer *)req->data; - struct fsf_plogi *els_plogi = - (struct fsf_plogi *) status_buffer->payload.data; + struct fsf_status_read_buffer *status_buffer; + struct fc_els_flogi *plogi; - zfcp_fc_incoming_wwpn(req, els_plogi->serv_param.wwpn); + status_buffer = (struct fsf_status_read_buffer *) req->data; + plogi = (struct fc_els_flogi *) status_buffer->payload.data; + zfcp_fc_incoming_wwpn(req, plogi->fl_wwpn); } static void zfcp_fc_incoming_logo(struct zfcp_fsf_req *req) { struct fsf_status_read_buffer *status_buffer = (struct fsf_status_read_buffer *)req->data; - struct fcp_logo *els_logo = - (struct fcp_logo *) status_buffer->payload.data; + struct fc_els_logo *logo = + (struct fc_els_logo *) status_buffer->payload.data; - zfcp_fc_incoming_wwpn(req, els_logo->nport_wwpn); + zfcp_fc_incoming_wwpn(req, logo->fl_n_port_wwn); } /** @@ -232,79 +197,72 @@ void zfcp_fc_incoming_els(struct zfcp_fsf_req *fsf_req) unsigned int els_type = status_buffer->payload.data[0]; zfcp_dbf_san_incoming_els(fsf_req); - if (els_type == LS_PLOGI) + if (els_type == ELS_PLOGI) zfcp_fc_incoming_plogi(fsf_req); - else if (els_type == LS_LOGO) + else if (els_type == ELS_LOGO) zfcp_fc_incoming_logo(fsf_req); - else if (els_type == LS_RSCN) + else if (els_type == ELS_RSCN) zfcp_fc_incoming_rscn(fsf_req); } -static void zfcp_fc_ns_handler(unsigned long data) +static void zfcp_fc_ns_gid_pn_eval(void *data) { - struct zfcp_fc_ns_handler_data *compl_rec = - (struct zfcp_fc_ns_handler_data *) data; - - if (compl_rec->handler) - compl_rec->handler(compl_rec->handler_data); - - complete(&compl_rec->done); -} - -static void zfcp_fc_ns_gid_pn_eval(unsigned long data) -{ - struct zfcp_gid_pn_data *gid_pn = (struct zfcp_gid_pn_data *) data; - struct zfcp_send_ct *ct = &gid_pn->ct; - struct ct_iu_gid_pn_req *ct_iu_req = sg_virt(ct->req); - struct ct_iu_gid_pn_resp *ct_iu_resp = sg_virt(ct->resp); + struct zfcp_fc_gid_pn *gid_pn = data; + struct zfcp_fsf_ct_els *ct = &gid_pn->ct; + struct zfcp_fc_gid_pn_req *gid_pn_req = sg_virt(ct->req); + struct zfcp_fc_gid_pn_resp *gid_pn_resp = sg_virt(ct->resp); struct zfcp_port *port = gid_pn->port; if (ct->status) return; - if (ct_iu_resp->header.cmd_rsp_code != ZFCP_CT_ACCEPT) + if (gid_pn_resp->ct_hdr.ct_cmd != FC_FS_ACC) return; /* paranoia */ - if (ct_iu_req->wwpn != port->wwpn) + if (gid_pn_req->gid_pn.fn_wwpn != port->wwpn) return; /* looks like a valid d_id */ - port->d_id = ct_iu_resp->d_id & ZFCP_DID_MASK; + port->d_id = ntoh24(gid_pn_resp->gid_pn.fp_fid); +} + +static void zfcp_fc_complete(void *data) +{ + complete(data); } static int zfcp_fc_ns_gid_pn_request(struct zfcp_port *port, - struct zfcp_gid_pn_data *gid_pn) + struct zfcp_fc_gid_pn *gid_pn) { struct zfcp_adapter *adapter = port->adapter; - struct zfcp_fc_ns_handler_data compl_rec; + DECLARE_COMPLETION_ONSTACK(completion); int ret; /* setup parameters for send generic command */ 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.req = &gid_pn->req; - gid_pn->ct.resp = &gid_pn->resp; - sg_init_one(&gid_pn->req, &gid_pn->ct_iu_req, - sizeof(struct ct_iu_gid_pn_req)); - sg_init_one(&gid_pn->resp, &gid_pn->ct_iu_resp, - sizeof(struct ct_iu_gid_pn_resp)); + gid_pn->ct.handler = zfcp_fc_complete; + gid_pn->ct.handler_data = &completion; + gid_pn->ct.req = &gid_pn->sg_req; + gid_pn->ct.resp = &gid_pn->sg_resp; + sg_init_one(&gid_pn->sg_req, &gid_pn->gid_pn_req, + sizeof(struct zfcp_fc_gid_pn_req)); + sg_init_one(&gid_pn->sg_resp, &gid_pn->gid_pn_resp, + sizeof(struct zfcp_fc_gid_pn_resp)); /* setup nameserver request */ - gid_pn->ct_iu_req.header.revision = ZFCP_CT_REVISION; - gid_pn->ct_iu_req.header.gs_type = ZFCP_CT_DIRECTORY_SERVICE; - gid_pn->ct_iu_req.header.gs_subtype = ZFCP_CT_NAME_SERVER; - 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 = 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.gid_pn_req); - if (!ret) - wait_for_completion(&compl_rec.done); + gid_pn->gid_pn_req.ct_hdr.ct_rev = FC_CT_REV; + gid_pn->gid_pn_req.ct_hdr.ct_fs_type = FC_FST_DIR; + gid_pn->gid_pn_req.ct_hdr.ct_fs_subtype = FC_NS_SUBTYPE; + gid_pn->gid_pn_req.ct_hdr.ct_options = 0; + gid_pn->gid_pn_req.ct_hdr.ct_cmd = FC_NS_GID_PN; + gid_pn->gid_pn_req.ct_hdr.ct_mr_size = ZFCP_FC_CT_SIZE_PAGE / 4; + gid_pn->gid_pn_req.gid_pn.fn_wwpn = port->wwpn; + + ret = zfcp_fsf_send_ct(&adapter->gs->ds, &gid_pn->ct, + adapter->pool.gid_pn_req); + if (!ret) { + wait_for_completion(&completion); + zfcp_fc_ns_gid_pn_eval(gid_pn); + } return ret; } @@ -316,10 +274,10 @@ static int zfcp_fc_ns_gid_pn_request(struct zfcp_port *port, static int zfcp_fc_ns_gid_pn(struct zfcp_port *port) { int ret; - struct zfcp_gid_pn_data *gid_pn; + struct zfcp_fc_gid_pn *gid_pn; struct zfcp_adapter *adapter = port->adapter; - gid_pn = mempool_alloc(adapter->pool.gid_pn_data, GFP_ATOMIC); + gid_pn = mempool_alloc(adapter->pool.gid_pn, GFP_ATOMIC); if (!gid_pn) return -ENOMEM; @@ -333,7 +291,7 @@ static int zfcp_fc_ns_gid_pn(struct zfcp_port *port) zfcp_fc_wka_port_put(&adapter->gs->ds); out: - mempool_free(gid_pn, adapter->pool.gid_pn_data); + mempool_free(gid_pn, adapter->pool.gid_pn); return ret; } @@ -357,7 +315,7 @@ void zfcp_fc_port_did_lookup(struct work_struct *work) zfcp_erp_port_reopen(port, 0, "fcgpn_3", NULL); out: - zfcp_port_put(port); + put_device(&port->sysfs_device); } /** @@ -366,9 +324,9 @@ out: */ void zfcp_fc_trigger_did_lookup(struct zfcp_port *port) { - zfcp_port_get(port); + get_device(&port->sysfs_device); if (!queue_work(port->adapter->work_queue, &port->gid_pn_work)) - zfcp_port_put(port); + put_device(&port->sysfs_device); } /** @@ -378,33 +336,36 @@ void zfcp_fc_trigger_did_lookup(struct zfcp_port *port) * * Evaluate PLOGI playload and copy important fields into zfcp_port structure */ -void zfcp_fc_plogi_evaluate(struct zfcp_port *port, struct fsf_plogi *plogi) -{ - port->maxframe_size = plogi->serv_param.common_serv_param[7] | - ((plogi->serv_param.common_serv_param[6] & 0x0F) << 8); - if (plogi->serv_param.class1_serv_param[0] & 0x80) +void zfcp_fc_plogi_evaluate(struct zfcp_port *port, struct fc_els_flogi *plogi) +{ + if (plogi->fl_wwpn != port->wwpn) { + port->d_id = 0; + dev_warn(&port->adapter->ccw_device->dev, + "A port opened with WWPN 0x%016Lx returned data that " + "identifies it as WWPN 0x%016Lx\n", + (unsigned long long) port->wwpn, + (unsigned long long) plogi->fl_wwpn); + return; + } + + port->wwnn = plogi->fl_wwnn; + port->maxframe_size = plogi->fl_csp.sp_bb_data; + + if (plogi->fl_cssp[0].cp_class & FC_CPC_VALID) port->supported_classes |= FC_COS_CLASS1; - if (plogi->serv_param.class2_serv_param[0] & 0x80) + if (plogi->fl_cssp[1].cp_class & FC_CPC_VALID) port->supported_classes |= FC_COS_CLASS2; - if (plogi->serv_param.class3_serv_param[0] & 0x80) + if (plogi->fl_cssp[2].cp_class & FC_CPC_VALID) port->supported_classes |= FC_COS_CLASS3; - if (plogi->serv_param.class4_serv_param[0] & 0x80) + if (plogi->fl_cssp[3].cp_class & FC_CPC_VALID) port->supported_classes |= FC_COS_CLASS4; } -struct zfcp_els_adisc { - struct zfcp_send_els els; - struct scatterlist req; - struct scatterlist resp; - struct zfcp_ls_adisc ls_adisc; - struct zfcp_ls_adisc ls_adisc_acc; -}; - -static void zfcp_fc_adisc_handler(unsigned long data) +static void zfcp_fc_adisc_handler(void *data) { - struct zfcp_els_adisc *adisc = (struct zfcp_els_adisc *) data; + struct zfcp_fc_els_adisc *adisc = data; struct zfcp_port *port = adisc->els.port; - struct zfcp_ls_adisc *ls_adisc = &adisc->ls_adisc_acc; + struct fc_els_adisc *adisc_resp = &adisc->adisc_resp; if (adisc->els.status) { /* request rejected or timed out */ @@ -414,9 +375,9 @@ static void zfcp_fc_adisc_handler(unsigned long data) } if (!port->wwnn) - port->wwnn = ls_adisc->wwnn; + port->wwnn = adisc_resp->adisc_wwnn; - if ((port->wwpn != ls_adisc->wwpn) || + if ((port->wwpn != adisc_resp->adisc_wwpn) || !(atomic_read(&port->status) & ZFCP_STATUS_COMMON_OPEN)) { zfcp_erp_port_reopen(port, ZFCP_STATUS_COMMON_ERP_FAILED, "fcadh_2", NULL); @@ -427,40 +388,44 @@ static void zfcp_fc_adisc_handler(unsigned long data) zfcp_scsi_schedule_rport_register(port); out: atomic_clear_mask(ZFCP_STATUS_PORT_LINK_TEST, &port->status); - zfcp_port_put(port); - kfree(adisc); + put_device(&port->sysfs_device); + kmem_cache_free(zfcp_data.adisc_cache, adisc); } static int zfcp_fc_adisc(struct zfcp_port *port) { - struct zfcp_els_adisc *adisc; + struct zfcp_fc_els_adisc *adisc; struct zfcp_adapter *adapter = port->adapter; + int ret; - adisc = kzalloc(sizeof(struct zfcp_els_adisc), GFP_ATOMIC); + adisc = kmem_cache_alloc(zfcp_data.adisc_cache, GFP_ATOMIC); if (!adisc) return -ENOMEM; + adisc->els.port = port; adisc->els.req = &adisc->req; adisc->els.resp = &adisc->resp; - sg_init_one(adisc->els.req, &adisc->ls_adisc, - sizeof(struct zfcp_ls_adisc)); - sg_init_one(adisc->els.resp, &adisc->ls_adisc_acc, - sizeof(struct zfcp_ls_adisc)); + sg_init_one(adisc->els.req, &adisc->adisc_req, + sizeof(struct fc_els_adisc)); + sg_init_one(adisc->els.resp, &adisc->adisc_resp, + sizeof(struct fc_els_adisc)); - adisc->els.adapter = adapter; - adisc->els.port = port; - adisc->els.d_id = port->d_id; adisc->els.handler = zfcp_fc_adisc_handler; - adisc->els.handler_data = (unsigned long) adisc; - adisc->els.ls_code = adisc->ls_adisc.code = ZFCP_LS_ADISC; + adisc->els.handler_data = adisc; /* acc. to FC-FS, hard_nport_id in ADISC should not be set for ports without FC-AL-2 capability, so we don't set it */ - adisc->ls_adisc.wwpn = fc_host_port_name(adapter->scsi_host); - adisc->ls_adisc.wwnn = fc_host_node_name(adapter->scsi_host); - adisc->ls_adisc.nport_id = fc_host_port_id(adapter->scsi_host); + adisc->adisc_req.adisc_wwpn = fc_host_port_name(adapter->scsi_host); + adisc->adisc_req.adisc_wwnn = fc_host_node_name(adapter->scsi_host); + adisc->adisc_req.adisc_cmd = ELS_ADISC; + hton24(adisc->adisc_req.adisc_port_id, + fc_host_port_id(adapter->scsi_host)); + + ret = zfcp_fsf_send_els(adapter, port->d_id, &adisc->els); + if (ret) + kmem_cache_free(zfcp_data.adisc_cache, adisc); - return zfcp_fsf_send_els(&adisc->els); + return ret; } void zfcp_fc_link_test_work(struct work_struct *work) @@ -469,7 +434,7 @@ void zfcp_fc_link_test_work(struct work_struct *work) container_of(work, struct zfcp_port, test_link_work); int retval; - zfcp_port_get(port); + get_device(&port->sysfs_device); port->rport_task = RPORT_DEL; zfcp_scsi_rport_work(&port->rport_work); @@ -488,7 +453,7 @@ void zfcp_fc_link_test_work(struct work_struct *work) zfcp_erp_port_forced_reopen(port, 0, "fcltwk1", NULL); out: - zfcp_port_put(port); + put_device(&port->sysfs_device); } /** @@ -501,12 +466,12 @@ out: */ void zfcp_fc_test_link(struct zfcp_port *port) { - zfcp_port_get(port); + get_device(&port->sysfs_device); if (!queue_work(port->adapter->work_queue, &port->test_link_work)) - zfcp_port_put(port); + put_device(&port->sysfs_device); } -static void zfcp_free_sg_env(struct zfcp_gpn_ft *gpn_ft, int buf_num) +static void zfcp_free_sg_env(struct zfcp_fc_gpn_ft *gpn_ft, int buf_num) { struct scatterlist *sg = &gpn_ft->sg_req; @@ -516,10 +481,10 @@ static void zfcp_free_sg_env(struct zfcp_gpn_ft *gpn_ft, int buf_num) kfree(gpn_ft); } -static struct zfcp_gpn_ft *zfcp_alloc_sg_env(int buf_num) +static struct zfcp_fc_gpn_ft *zfcp_alloc_sg_env(int buf_num) { - struct zfcp_gpn_ft *gpn_ft; - struct ct_iu_gpn_ft_req *req; + struct zfcp_fc_gpn_ft *gpn_ft; + struct zfcp_fc_gpn_ft_req *req; gpn_ft = kzalloc(sizeof(*gpn_ft), GFP_KERNEL); if (!gpn_ft) @@ -542,159 +507,152 @@ out: } -static int zfcp_fc_send_gpn_ft(struct zfcp_gpn_ft *gpn_ft, +static int zfcp_fc_send_gpn_ft(struct zfcp_fc_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); - struct zfcp_fc_ns_handler_data compl_rec; + struct zfcp_fsf_ct_els *ct = &gpn_ft->ct; + struct zfcp_fc_gpn_ft_req *req = sg_virt(&gpn_ft->sg_req); + DECLARE_COMPLETION_ONSTACK(completion); int ret; /* prepare CT IU for GPN_FT */ - req->header.revision = ZFCP_CT_REVISION; - req->header.gs_type = ZFCP_CT_DIRECTORY_SERVICE; - req->header.gs_subtype = ZFCP_CT_NAME_SERVER; - req->header.options = ZFCP_CT_SYNCHRONOUS; - req->header.cmd_rsp_code = ZFCP_CT_GPN_FT; - req->header.max_res_size = max_bytes / 4; - req->flags = 0; - req->domain_id_scope = 0; - req->area_id_scope = 0; - req->fc4_type = ZFCP_CT_SCSI_FCP; + req->ct_hdr.ct_rev = FC_CT_REV; + req->ct_hdr.ct_fs_type = FC_FST_DIR; + req->ct_hdr.ct_fs_subtype = FC_NS_SUBTYPE; + req->ct_hdr.ct_options = 0; + req->ct_hdr.ct_cmd = FC_NS_GPN_FT; + req->ct_hdr.ct_mr_size = max_bytes / 4; + req->gpn_ft.fn_domain_id_scope = 0; + req->gpn_ft.fn_area_id_scope = 0; + req->gpn_ft.fn_fc4_type = FC_TYPE_FCP; /* prepare zfcp_send_ct */ - ct->wka_port = &adapter->gs->ds; - ct->handler = zfcp_fc_ns_handler; - ct->handler_data = (unsigned long)&compl_rec; + ct->handler = zfcp_fc_complete; + ct->handler_data = &completion; 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); + ret = zfcp_fsf_send_ct(&adapter->gs->ds, ct, NULL); if (!ret) - wait_for_completion(&compl_rec.done); + wait_for_completion(&completion); return ret; } -static void zfcp_fc_validate_port(struct zfcp_port *port) +static void zfcp_fc_validate_port(struct zfcp_port *port, struct list_head *lh) { - struct zfcp_adapter *adapter = port->adapter; - if (!(atomic_read(&port->status) & ZFCP_STATUS_COMMON_NOESC)) return; atomic_clear_mask(ZFCP_STATUS_COMMON_NOESC, &port->status); if ((port->supported_classes != 0) || - !list_empty(&port->unit_list_head)) { - zfcp_port_put(port); + !list_empty(&port->unit_list)) return; - } - zfcp_erp_port_shutdown(port, 0, "fcpval1", NULL); - zfcp_erp_wait(adapter); - zfcp_port_put(port); - zfcp_port_dequeue(port); + + list_move_tail(&port->list, lh); } -static int zfcp_fc_eval_gpn_ft(struct zfcp_gpn_ft *gpn_ft, int max_entries) +static int zfcp_fc_eval_gpn_ft(struct zfcp_fc_gpn_ft *gpn_ft, + struct zfcp_adapter *adapter, int max_entries) { - struct zfcp_send_ct *ct = &gpn_ft->ct; + struct zfcp_fsf_ct_els *ct = &gpn_ft->ct; struct scatterlist *sg = gpn_ft->sg_resp; - struct ct_hdr *hdr = sg_virt(sg); - struct gpn_ft_resp_acc *acc = sg_virt(sg); - struct zfcp_adapter *adapter = ct->wka_port->adapter; + struct fc_ct_hdr *hdr = sg_virt(sg); + struct fc_gpn_ft_resp *acc = sg_virt(sg); struct zfcp_port *port, *tmp; + unsigned long flags; + LIST_HEAD(remove_lh); u32 d_id; int ret = 0, x, last = 0; if (ct->status) return -EIO; - if (hdr->cmd_rsp_code != ZFCP_CT_ACCEPT) { - if (hdr->reason_code == ZFCP_CT_UNABLE_TO_PERFORM_CMD) + if (hdr->ct_cmd != FC_FS_ACC) { + if (hdr->ct_reason == FC_BA_RJT_UNABLE) return -EAGAIN; /* might be a temporary condition */ return -EIO; } - if (hdr->max_res_size) { + if (hdr->ct_mr_size) { dev_warn(&adapter->ccw_device->dev, "The name server reported %d words residual data\n", - hdr->max_res_size); + hdr->ct_mr_size); return -E2BIG; } - mutex_lock(&zfcp_data.config_mutex); - /* first entry is the header */ for (x = 1; x < max_entries && !last; x++) { - if (x % (ZFCP_GPN_FT_ENTRIES + 1)) + if (x % (ZFCP_FC_GPN_FT_ENT_PAGE + 1)) acc++; else acc = sg_virt(++sg); - last = acc->control & 0x80; - d_id = acc->port_id[0] << 16 | acc->port_id[1] << 8 | - acc->port_id[2]; + last = acc->fp_flags & FC_NS_FID_LAST; + d_id = ntoh24(acc->fp_fid); /* don't attach ports with a well known address */ - if ((d_id & ZFCP_DID_WKA) == ZFCP_DID_WKA) + if (d_id >= FC_FID_WELL_KNOWN_BASE) continue; /* skip the adapter's port and known remote ports */ - if (acc->wwpn == fc_host_port_name(adapter->scsi_host)) - continue; - port = zfcp_get_port_by_wwpn(adapter, acc->wwpn); - if (port) + if (acc->fp_wwpn == fc_host_port_name(adapter->scsi_host)) continue; - port = zfcp_port_enqueue(adapter, acc->wwpn, + port = zfcp_port_enqueue(adapter, acc->fp_wwpn, ZFCP_STATUS_COMMON_NOESC, d_id); - if (IS_ERR(port)) - ret = PTR_ERR(port); - else + if (!IS_ERR(port)) zfcp_erp_port_reopen(port, 0, "fcegpf1", NULL); + else if (PTR_ERR(port) != -EEXIST) + ret = PTR_ERR(port); } zfcp_erp_wait(adapter); - list_for_each_entry_safe(port, tmp, &adapter->port_list_head, list) - zfcp_fc_validate_port(port); - mutex_unlock(&zfcp_data.config_mutex); + write_lock_irqsave(&adapter->port_list_lock, flags); + list_for_each_entry_safe(port, tmp, &adapter->port_list, list) + zfcp_fc_validate_port(port, &remove_lh); + write_unlock_irqrestore(&adapter->port_list_lock, flags); + + list_for_each_entry_safe(port, tmp, &remove_lh, list) { + zfcp_erp_port_shutdown(port, 0, "fcegpf2", NULL); + zfcp_device_unregister(&port->sysfs_device, + &zfcp_sysfs_port_attrs); + } + return ret; } /** * zfcp_fc_scan_ports - scan remote ports and attach new ports - * @adapter: pointer to struct zfcp_adapter + * @work: reference to scheduled work */ -int zfcp_fc_scan_ports(struct zfcp_adapter *adapter) +void zfcp_fc_scan_ports(struct work_struct *work) { + struct zfcp_adapter *adapter = container_of(work, struct zfcp_adapter, + scan_work); int ret, i; - struct zfcp_gpn_ft *gpn_ft; + struct zfcp_fc_gpn_ft *gpn_ft; int chain, max_entries, buf_num, max_bytes; chain = adapter->adapter_features & FSF_FEATURE_ELS_CT_CHAINED_SBALS; - buf_num = chain ? ZFCP_GPN_FT_BUFFERS : 1; - max_entries = chain ? ZFCP_GPN_FT_MAX_ENTRIES : ZFCP_GPN_FT_ENTRIES; - max_bytes = chain ? ZFCP_GPN_FT_MAX_SIZE : ZFCP_CT_SIZE_ONE_PAGE; + buf_num = chain ? ZFCP_FC_GPN_FT_NUM_BUFS : 1; + max_entries = chain ? ZFCP_FC_GPN_FT_MAX_ENT : ZFCP_FC_GPN_FT_ENT_PAGE; + max_bytes = chain ? ZFCP_FC_GPN_FT_MAX_SIZE : ZFCP_FC_CT_SIZE_PAGE; if (fc_host_port_type(adapter->scsi_host) != FC_PORTTYPE_NPORT && fc_host_port_type(adapter->scsi_host) != FC_PORTTYPE_NPIV) - return 0; + return; - ret = zfcp_fc_wka_port_get(&adapter->gs->ds); - if (ret) - return ret; + if (zfcp_fc_wka_port_get(&adapter->gs->ds)) + return; gpn_ft = zfcp_alloc_sg_env(buf_num); - if (!gpn_ft) { - ret = -ENOMEM; + if (!gpn_ft) goto out; - } for (i = 0; i < 3; i++) { ret = zfcp_fc_send_gpn_ft(gpn_ft, adapter, max_bytes); if (!ret) { - ret = zfcp_fc_eval_gpn_ft(gpn_ft, max_entries); + ret = zfcp_fc_eval_gpn_ft(gpn_ft, adapter, max_entries); if (ret == -EAGAIN) ssleep(1); else @@ -704,174 +662,116 @@ int zfcp_fc_scan_ports(struct zfcp_adapter *adapter) zfcp_free_sg_env(gpn_ft, buf_num); out: zfcp_fc_wka_port_put(&adapter->gs->ds); - return ret; -} - - -void _zfcp_fc_scan_ports_later(struct work_struct *work) -{ - zfcp_fc_scan_ports(container_of(work, struct zfcp_adapter, scan_work)); } -struct zfcp_els_fc_job { - struct zfcp_send_els els; - struct fc_bsg_job *job; -}; - -static void zfcp_fc_generic_els_handler(unsigned long data) +static void zfcp_fc_ct_els_job_handler(void *data) { - struct zfcp_els_fc_job *els_fc_job = (struct zfcp_els_fc_job *) data; - struct fc_bsg_job *job = els_fc_job->job; - struct fc_bsg_reply *reply = job->reply; - - if (els_fc_job->els.status) { - /* request rejected or timed out */ - reply->reply_data.ctels_reply.status = FC_CTELS_STATUS_REJECT; - goto out; - } - - reply->reply_data.ctels_reply.status = FC_CTELS_STATUS_OK; - reply->reply_payload_rcv_len = job->reply_payload.payload_len; + struct fc_bsg_job *job = data; + struct zfcp_fsf_ct_els *zfcp_ct_els = job->dd_data; + int status = zfcp_ct_els->status; + int reply_status; -out: - job->state_flags = FC_RQST_STATE_DONE; + reply_status = status ? FC_CTELS_STATUS_REJECT : FC_CTELS_STATUS_OK; + job->reply->reply_data.ctels_reply.status = reply_status; + job->reply->reply_payload_rcv_len = job->reply_payload.payload_len; job->job_done(job); - kfree(els_fc_job); } -int zfcp_fc_execute_els_fc_job(struct fc_bsg_job *job) +static int zfcp_fc_exec_els_job(struct fc_bsg_job *job, + struct zfcp_adapter *adapter) { - struct zfcp_els_fc_job *els_fc_job; + struct zfcp_fsf_ct_els *els = job->dd_data; struct fc_rport *rport = job->rport; - struct Scsi_Host *shost; - struct zfcp_adapter *adapter; struct zfcp_port *port; - u8 *port_did; - - shost = rport ? rport_to_shost(rport) : job->shost; - adapter = (struct zfcp_adapter *)shost->hostdata[0]; - - if (!(atomic_read(&adapter->status) & ZFCP_STATUS_COMMON_OPEN)) - return -EINVAL; - - els_fc_job = kzalloc(sizeof(struct zfcp_els_fc_job), GFP_KERNEL); - if (!els_fc_job) - return -ENOMEM; + u32 d_id; - els_fc_job->els.adapter = adapter; if (rport) { - read_lock_irq(&zfcp_data.config_lock); 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); - if (!port) { - kfree(els_fc_job); + if (!port) return -EINVAL; - } - } else { - port_did = job->request->rqst_data.h_els.port_id; - els_fc_job->els.d_id = (port_did[0] << 16) + - (port_did[1] << 8) + port_did[2]; - } - - els_fc_job->els.req = job->request_payload.sg_list; - els_fc_job->els.resp = job->reply_payload.sg_list; - els_fc_job->els.handler = zfcp_fc_generic_els_handler; - els_fc_job->els.handler_data = (unsigned long) els_fc_job; - els_fc_job->job = job; - - return zfcp_fsf_send_els(&els_fc_job->els); -} - -struct zfcp_ct_fc_job { - struct zfcp_send_ct ct; - struct fc_bsg_job *job; -}; - -static void zfcp_fc_generic_ct_handler(unsigned long data) -{ - struct zfcp_ct_fc_job *ct_fc_job = (struct zfcp_ct_fc_job *) data; - struct fc_bsg_job *job = ct_fc_job->job; - - job->reply->reply_data.ctels_reply.status = ct_fc_job->ct.status ? - FC_CTELS_STATUS_REJECT : FC_CTELS_STATUS_OK; - job->reply->reply_payload_rcv_len = job->reply_payload.payload_len; - job->state_flags = FC_RQST_STATE_DONE; - job->job_done(job); - zfcp_fc_wka_port_put(ct_fc_job->ct.wka_port); + d_id = port->d_id; + put_device(&port->sysfs_device); + } else + d_id = ntoh24(job->request->rqst_data.h_els.port_id); - kfree(ct_fc_job); + return zfcp_fsf_send_els(adapter, d_id, els); } -int zfcp_fc_execute_ct_fc_job(struct fc_bsg_job *job) +static int zfcp_fc_exec_ct_job(struct fc_bsg_job *job, + struct zfcp_adapter *adapter) { int ret; u8 gs_type; - struct fc_rport *rport = job->rport; - struct Scsi_Host *shost; - struct zfcp_adapter *adapter; - struct zfcp_ct_fc_job *ct_fc_job; + struct zfcp_fsf_ct_els *ct = job->dd_data; + struct zfcp_fc_wka_port *wka_port; u32 preamble_word1; - shost = rport ? rport_to_shost(rport) : job->shost; - - adapter = (struct zfcp_adapter *)shost->hostdata[0]; - if (!(atomic_read(&adapter->status) & ZFCP_STATUS_COMMON_OPEN)) - return -EINVAL; - - ct_fc_job = kzalloc(sizeof(struct zfcp_ct_fc_job), GFP_KERNEL); - if (!ct_fc_job) - return -ENOMEM; - preamble_word1 = job->request->rqst_data.r_ct.preamble_word1; gs_type = (preamble_word1 & 0xff000000) >> 24; switch (gs_type) { case FC_FST_ALIAS: - ct_fc_job->ct.wka_port = &adapter->gs->as; + wka_port = &adapter->gs->as; break; case FC_FST_MGMT: - ct_fc_job->ct.wka_port = &adapter->gs->ms; + wka_port = &adapter->gs->ms; break; case FC_FST_TIME: - ct_fc_job->ct.wka_port = &adapter->gs->ts; + wka_port = &adapter->gs->ts; break; case FC_FST_DIR: - ct_fc_job->ct.wka_port = &adapter->gs->ds; + wka_port = &adapter->gs->ds; break; default: - kfree(ct_fc_job); return -EINVAL; /* no such service */ } - ret = zfcp_fc_wka_port_get(ct_fc_job->ct.wka_port); - if (ret) { - kfree(ct_fc_job); + ret = zfcp_fc_wka_port_get(wka_port); + if (ret) return ret; - } - ct_fc_job->ct.req = job->request_payload.sg_list; - ct_fc_job->ct.resp = job->reply_payload.sg_list; - 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(wka_port, ct, NULL); + if (ret) + zfcp_fc_wka_port_put(wka_port); - ret = zfcp_fsf_send_ct(&ct_fc_job->ct, NULL); - if (ret) { - kfree(ct_fc_job); - zfcp_fc_wka_port_put(ct_fc_job->ct.wka_port); - } return ret; } +int zfcp_fc_exec_bsg_job(struct fc_bsg_job *job) +{ + struct Scsi_Host *shost; + struct zfcp_adapter *adapter; + struct zfcp_fsf_ct_els *ct_els = job->dd_data; + + shost = job->rport ? rport_to_shost(job->rport) : job->shost; + adapter = (struct zfcp_adapter *)shost->hostdata[0]; + + if (!(atomic_read(&adapter->status) & ZFCP_STATUS_COMMON_OPEN)) + return -EINVAL; + + ct_els->req = job->request_payload.sg_list; + ct_els->resp = job->reply_payload.sg_list; + ct_els->handler = zfcp_fc_ct_els_job_handler; + ct_els->handler_data = job; + + switch (job->request->msgcode) { + case FC_BSG_RPT_ELS: + case FC_BSG_HST_ELS_NOLOGIN: + return zfcp_fc_exec_els_job(job, adapter); + case FC_BSG_RPT_CT: + case FC_BSG_HST_CT: + return zfcp_fc_exec_ct_job(job, adapter); + default: + return -EINVAL; + } +} + int zfcp_fc_gs_setup(struct zfcp_adapter *adapter) { - struct zfcp_wka_ports *wka_ports; + struct zfcp_fc_wka_ports *wka_ports; - wka_ports = kzalloc(sizeof(struct zfcp_wka_ports), GFP_KERNEL); + wka_ports = kzalloc(sizeof(struct zfcp_fc_wka_ports), GFP_KERNEL); if (!wka_ports) return -ENOMEM; @@ -880,7 +780,6 @@ int zfcp_fc_gs_setup(struct zfcp_adapter *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; } |