From 6f71d9bc025b02a8cbc2be83b0226a7043a507a5 Mon Sep 17 00:00:00 2001 From: Date: Sun, 10 Apr 2005 23:04:28 -0500 Subject: [PATCH] zfcp: add point-2-point support From: Andreas Herrmann This patch mainly introduces support for point-2-point topology. From: Heiko Carstens From: Maxim Shchetynin From: Andreas Herrmann Signed-off-by: James Bottomley --- drivers/s390/scsi/zfcp_aux.c | 4 +-- drivers/s390/scsi/zfcp_def.h | 5 +++- drivers/s390/scsi/zfcp_erp.c | 20 +++++++++++++- drivers/s390/scsi/zfcp_fsf.c | 38 ++++++++++++++++++++------ drivers/s390/scsi/zfcp_fsf.h | 6 ++-- drivers/s390/scsi/zfcp_sysfs_adapter.c | 6 ++++ 6 files changed, 65 insertions(+), 14 deletions(-) diff --git a/drivers/s390/scsi/zfcp_aux.c b/drivers/s390/scsi/zfcp_aux.c index 6a43322ccb0a..a393cf4d0313 100644 --- a/drivers/s390/scsi/zfcp_aux.c +++ b/drivers/s390/scsi/zfcp_aux.c @@ -89,10 +89,10 @@ MODULE_DESCRIPTION ("FCP (SCSI over Fibre Channel) HBA driver for IBM eServer zSeries"); MODULE_LICENSE("GPL"); -module_param(device, charp, 0); +module_param(device, charp, 0400); MODULE_PARM_DESC(device, "specify initial device"); -module_param(loglevel, uint, 0); +module_param(loglevel, uint, 0400); MODULE_PARM_DESC(loglevel, "log levels, 8 nibbles: " "FC ERP QDIO CIO Config FSF SCSI Other, " diff --git a/drivers/s390/scsi/zfcp_def.h b/drivers/s390/scsi/zfcp_def.h index 53fcccbb424c..0afa1c4696ca 100644 --- a/drivers/s390/scsi/zfcp_def.h +++ b/drivers/s390/scsi/zfcp_def.h @@ -70,7 +70,7 @@ /********************* GENERAL DEFINES *********************************/ /* zfcp version number, it consists of major, minor, and patch-level number */ -#define ZFCP_VERSION "4.2.0" +#define ZFCP_VERSION "4.3.0" /** * zfcp_sg_to_address - determine kernel address from struct scatterlist @@ -851,6 +851,9 @@ struct zfcp_adapter { wwn_t wwnn; /* WWNN */ wwn_t wwpn; /* WWPN */ fc_id_t s_id; /* N_Port ID */ + wwn_t peer_wwnn; /* P2P peer WWNN */ + wwn_t peer_wwpn; /* P2P peer WWPN */ + fc_id_t peer_d_id; /* P2P peer D_ID */ struct ccw_device *ccw_device; /* S/390 ccw device */ u8 fc_service_class; u32 fc_topology; /* FC topology */ diff --git a/drivers/s390/scsi/zfcp_erp.c b/drivers/s390/scsi/zfcp_erp.c index cfc0d8c588df..53ebc1cdfe2d 100644 --- a/drivers/s390/scsi/zfcp_erp.c +++ b/drivers/s390/scsi/zfcp_erp.c @@ -2568,6 +2568,23 @@ zfcp_erp_port_strategy_open_common(struct zfcp_erp_action *erp_action) case ZFCP_ERP_STEP_UNINITIALIZED: case ZFCP_ERP_STEP_PHYS_PORT_CLOSING: case ZFCP_ERP_STEP_PORT_CLOSING: + if (adapter->fc_topology == FSF_TOPO_P2P) { + if (port->wwpn != adapter->peer_wwpn) { + ZFCP_LOG_NORMAL("Failed to open port 0x%016Lx " + "on adapter %s.\nPeer WWPN " + "0x%016Lx does not match\n", + port->wwpn, + zfcp_get_busid_by_adapter(adapter), + adapter->peer_wwpn); + zfcp_erp_port_failed(port); + retval = ZFCP_ERP_FAILED; + break; + } + port->d_id = adapter->peer_d_id; + atomic_set_mask(ZFCP_STATUS_PORT_DID_DID, &port->status); + retval = zfcp_erp_port_strategy_open_port(erp_action); + break; + } if (!(adapter->nameserver_port)) { retval = zfcp_nameserver_enqueue(adapter); if (retval != 0) { @@ -3516,8 +3533,9 @@ zfcp_erp_adapter_access_changed(struct zfcp_adapter *adapter) debug_text_event(adapter->erp_dbf, 3, "a_access_unblock"); debug_event(adapter->erp_dbf, 3, &adapter->name, 8); - zfcp_erp_port_access_changed(adapter->nameserver_port); read_lock_irqsave(&zfcp_data.config_lock, flags); + if (adapter->nameserver_port) + zfcp_erp_port_access_changed(adapter->nameserver_port); list_for_each_entry(port, &adapter->port_list_head, list) if (port != adapter->nameserver_port) zfcp_erp_port_access_changed(port); diff --git a/drivers/s390/scsi/zfcp_fsf.c b/drivers/s390/scsi/zfcp_fsf.c index 578b9fbe5206..148b11c822bf 100644 --- a/drivers/s390/scsi/zfcp_fsf.c +++ b/drivers/s390/scsi/zfcp_fsf.c @@ -2107,6 +2107,9 @@ zfcp_fsf_exchange_config_evaluate(struct zfcp_fsf_req *fsf_req, int xchg_ok) bottom->low_qtcb_version, bottom->high_qtcb_version); adapter->fsf_lic_version = bottom->lic_version; adapter->supported_features = bottom->supported_features; + adapter->peer_wwpn = 0; + adapter->peer_wwnn = 0; + adapter->peer_d_id = 0; if (xchg_ok) { adapter->wwnn = bottom->nport_serv_param.wwnn; @@ -2124,13 +2127,19 @@ zfcp_fsf_exchange_config_evaluate(struct zfcp_fsf_req *fsf_req, int xchg_ok) adapter->hydra_version = 0; } + if (adapter->fc_topology == FSF_TOPO_P2P) { + adapter->peer_d_id = bottom->peer_d_id & ZFCP_DID_MASK; + adapter->peer_wwpn = bottom->plogi_payload.wwpn; + adapter->peer_wwnn = bottom->plogi_payload.wwnn; + } + if(adapter->supported_features & FSF_FEATURE_HBAAPI_MANAGEMENT){ adapter->hardware_version = bottom->hardware_version; memcpy(adapter->serial_number, bottom->serial_number, 17); EBCASC(adapter->serial_number, sizeof(adapter->serial_number)); } - ZFCP_LOG_INFO("The adapter %s reported the following characteristics:\n" + ZFCP_LOG_NORMAL("The adapter %s reported the following characteristics:\n" "WWNN 0x%016Lx, " "WWPN 0x%016Lx, " "S_ID 0x%08x,\n" @@ -2194,14 +2203,18 @@ zfcp_fsf_exchange_config_data_handler(struct zfcp_fsf_req *fsf_req) switch (adapter->fc_topology) { case FSF_TOPO_P2P: ZFCP_LOG_FLAGS(1, "FSF_TOPO_P2P\n"); - ZFCP_LOG_NORMAL("error: Point-to-point fibrechannel " - "configuration detected at adapter %s " - "unsupported, shutting down adapter\n", - zfcp_get_busid_by_adapter(adapter)); + ZFCP_LOG_NORMAL("Point-to-Point fibrechannel " + "configuration detected at adapter %s\n" + "Peer WWNN 0x%016llx, " + "peer WWPN 0x%016llx, " + "peer d_id 0x%06x\n", + zfcp_get_busid_by_adapter(adapter), + adapter->peer_wwnn, + adapter->peer_wwpn, + adapter->peer_d_id); debug_text_event(fsf_req->adapter->erp_dbf, 0, "top-p-to-p"); - zfcp_erp_adapter_shutdown(adapter, 0); - return -EIO; + break; case FSF_TOPO_AL: ZFCP_LOG_FLAGS(1, "FSF_TOPO_AL\n"); ZFCP_LOG_NORMAL("error: Arbitrated loop fibrechannel " @@ -2226,6 +2239,7 @@ zfcp_fsf_exchange_config_data_handler(struct zfcp_fsf_req *fsf_req) "of a type known to the zfcp " "driver, shutting down adapter\n", zfcp_get_busid_by_adapter(adapter)); + adapter->fc_topology = FSF_TOPO_ERROR; debug_text_exception(fsf_req->adapter->erp_dbf, 0, "unknown-topo"); zfcp_erp_adapter_shutdown(adapter, 0); @@ -4281,6 +4295,7 @@ zfcp_fsf_send_fcp_command_task_handler(struct zfcp_fsf_req *fsf_req) bottom.io.fcp_cmnd, FSF_FCP_CMND_SIZE); zfcp_cmd_dbf_event_fsf("undeffcp", fsf_req, NULL, 0); set_host_byte(&scpnt->result, DID_ERROR); + goto skip_fsfstatus; } } @@ -4334,7 +4349,7 @@ zfcp_fsf_send_fcp_command_task_handler(struct zfcp_fsf_req *fsf_req) scpnt->resid = fcp_rsp_iu->fcp_resid; if (scpnt->request_bufflen - scpnt->resid < scpnt->underflow) - scpnt->result |= DID_ERROR << 16; + set_host_byte(&scpnt->result, DID_ERROR); } skip_fsfstatus: @@ -4607,6 +4622,13 @@ zfcp_fsf_control_file_handler(struct zfcp_fsf_req *fsf_req) if (bottom->operation_subtype == FSF_CFDC_OPERATION_SUBTYPE) { switch (header->fsf_status_qual.word[0]) { + case FSF_SQ_CFDC_HARDENED_ON_SE: + ZFCP_LOG_NORMAL( + "CFDC on the adapter %s has being " + "hardened on primary and secondary SE\n", + zfcp_get_busid_by_adapter(adapter)); + break; + case FSF_SQ_CFDC_COULD_NOT_HARDEN_ON_SE: ZFCP_LOG_NORMAL( "CFDC of the adapter %s could not " diff --git a/drivers/s390/scsi/zfcp_fsf.h b/drivers/s390/scsi/zfcp_fsf.h index 5889956bbf08..07140dfda2a7 100644 --- a/drivers/s390/scsi/zfcp_fsf.h +++ b/drivers/s390/scsi/zfcp_fsf.h @@ -129,6 +129,7 @@ #define FSF_SQ_NO_RETRY_POSSIBLE 0x07 /* FSF status qualifier for CFDC commands */ +#define FSF_SQ_CFDC_HARDENED_ON_SE 0x00000000 #define FSF_SQ_CFDC_COULD_NOT_HARDEN_ON_SE 0x00000001 #define FSF_SQ_CFDC_COULD_NOT_HARDEN_ON_SE2 0x00000002 /* CFDC subtable codes */ @@ -357,7 +358,6 @@ struct fsf_nport_serv_param { u8 class3_serv_param[16]; u8 class4_serv_param[16]; u8 vendor_version_level[16]; - u8 res1[16]; } __attribute__ ((packed)); struct fsf_plogi { @@ -415,11 +415,13 @@ struct fsf_qtcb_bottom_config { u8 res2[12]; u32 s_id; struct fsf_nport_serv_param nport_serv_param; + u8 reserved_nport_serv_param[16]; u8 res3[8]; u32 adapter_ports; u32 hardware_version; u8 serial_number[32]; - u8 res4[272]; + struct fsf_nport_serv_param plogi_payload; + u8 res4[160]; } __attribute__ ((packed)); struct fsf_qtcb_bottom_port { diff --git a/drivers/s390/scsi/zfcp_sysfs_adapter.c b/drivers/s390/scsi/zfcp_sysfs_adapter.c index ff28ade1dfc7..23e2dca55bb8 100644 --- a/drivers/s390/scsi/zfcp_sysfs_adapter.c +++ b/drivers/s390/scsi/zfcp_sysfs_adapter.c @@ -65,6 +65,9 @@ ZFCP_DEFINE_ADAPTER_ATTR(status, "0x%08x\n", atomic_read(&adapter->status)); ZFCP_DEFINE_ADAPTER_ATTR(wwnn, "0x%016llx\n", adapter->wwnn); ZFCP_DEFINE_ADAPTER_ATTR(wwpn, "0x%016llx\n", adapter->wwpn); ZFCP_DEFINE_ADAPTER_ATTR(s_id, "0x%06x\n", adapter->s_id); +ZFCP_DEFINE_ADAPTER_ATTR(peer_wwnn, "0x%016llx\n", adapter->peer_wwnn); +ZFCP_DEFINE_ADAPTER_ATTR(peer_wwpn, "0x%016llx\n", adapter->peer_wwpn); +ZFCP_DEFINE_ADAPTER_ATTR(peer_d_id, "0x%06x\n", adapter->peer_d_id); ZFCP_DEFINE_ADAPTER_ATTR(card_version, "0x%04x\n", adapter->hydra_version); ZFCP_DEFINE_ADAPTER_ATTR(lic_version, "0x%08x\n", adapter->fsf_lic_version); ZFCP_DEFINE_ADAPTER_ATTR(fc_link_speed, "%d Gb/s\n", adapter->fc_link_speed); @@ -255,6 +258,9 @@ static struct attribute *zfcp_adapter_attrs[] = { &dev_attr_wwnn.attr, &dev_attr_wwpn.attr, &dev_attr_s_id.attr, + &dev_attr_peer_wwnn.attr, + &dev_attr_peer_wwpn.attr, + &dev_attr_peer_d_id.attr, &dev_attr_card_version.attr, &dev_attr_lic_version.attr, &dev_attr_fc_link_speed.attr, -- 2.20.1