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zfcp: add point-2-point support 

From: Andreas Herrmann <aherrman@de.ibm.com>

This patch mainly introduces support for point-2-point
topology.

From: Heiko Carstens <heiko.carstens@de.ibm.com>
From: Maxim Shchetynin <maxim@de.ibm.com>
From: Andreas Herrmann <aherrman@de.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
This commit is contained in:
2005-04-10 23:04:28 -05:00 committed by James Bottomley
parent f4c2c15b93
commit 6f71d9bc02
6 changed files with 65 additions and 14 deletions
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4
drivers/s390/scsi/zfcp_aux.c
View File

@ -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, "

5
drivers/s390/scsi/zfcp_def.h
View File

@ -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 */

20
drivers/s390/scsi/zfcp_erp.c
View File

@ -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);

38
drivers/s390/scsi/zfcp_fsf.c
View File

@ -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 "

6
drivers/s390/scsi/zfcp_fsf.h
View File

@ -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 {

6
drivers/s390/scsi/zfcp_sysfs_adapter.c
View File

@ -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,