From 52e61fde5ec95cb4011784fb0bc6b436e16fcaa8 Mon Sep 17 00:00:00 2001 From: Benjamin Block Date: Fri, 8 May 2020 19:23:30 +0200 Subject: scsi: zfcp: Move fc_host updates during xport data handling into fenced function When executing exchange port data for a FCP device for the first time, or after an adapter recovery, we update several properties of the fibre channel host object which represents that FCP device. When moving the scsi host object allocation and registration - and thus also the fibre channel host object allocation - to after the first exchange config and exchange port data, this is not possible for the former case. Move all these update into separate, and fenced function that first checks whether the scsi host object already exists or not, before making the updates. During the first ever exchange port data in the adapter life cycle this will make the exchange port data handler skip over this update step, but we can repeat it later, after we allocated the scsi host object. For any further recovery of that adapter the work flow is only changed slightly because then the scsi host object already exists and we don't free it until we release the adapter completely at the end of its life cycle. Link: https://lore.kernel.org/r/ae454c2dc6da0b02907c489af91d0b211d331825.1588956679.git.bblock@linux.ibm.com Reviewed-by: Steffen Maier Signed-off-by: Benjamin Block Signed-off-by: Martin K. Petersen --- drivers/s390/scsi/zfcp_ext.h | 3 +++ drivers/s390/scsi/zfcp_fsf.c | 12 +++--------- drivers/s390/scsi/zfcp_scsi.c | 19 +++++++++++++++++++ 3 files changed, 25 insertions(+), 9 deletions(-) (limited to 'drivers/s390') diff --git a/drivers/s390/scsi/zfcp_ext.h b/drivers/s390/scsi/zfcp_ext.h index 4c4be754cf6e..5dc9bdc5803f 100644 --- a/drivers/s390/scsi/zfcp_ext.h +++ b/drivers/s390/scsi/zfcp_ext.h @@ -176,6 +176,9 @@ extern void zfcp_scsi_shost_update_config_data( struct zfcp_adapter *const adapter, const struct fsf_qtcb_bottom_config *const bottom, const bool bottom_incomplete); +extern void zfcp_scsi_shost_update_port_data( + struct zfcp_adapter *const adapter, + const struct fsf_qtcb_bottom_port *const bottom); /* zfcp_sysfs.c */ extern const struct attribute_group *zfcp_unit_attr_groups[]; diff --git a/drivers/s390/scsi/zfcp_fsf.c b/drivers/s390/scsi/zfcp_fsf.c index 54edfcbe84ce..bfb567a1d7bf 100644 --- a/drivers/s390/scsi/zfcp_fsf.c +++ b/drivers/s390/scsi/zfcp_fsf.c @@ -725,19 +725,10 @@ static void zfcp_fsf_exchange_port_evaluate(struct zfcp_fsf_req *req) { struct zfcp_adapter *adapter = req->adapter; struct fsf_qtcb_bottom_port *bottom = &req->qtcb->bottom.port; - struct Scsi_Host *shost = adapter->scsi_host; if (req->data) memcpy(req->data, bottom, sizeof(*bottom)); - fc_host_permanent_port_name(shost) = bottom->wwpn; - fc_host_maxframe_size(shost) = bottom->maximum_frame_size; - fc_host_supported_speeds(shost) = - zfcp_fsf_convert_portspeed(bottom->supported_speed); - memcpy(fc_host_supported_fc4s(shost), bottom->supported_fc4_types, - FC_FC4_LIST_SIZE); - memcpy(fc_host_active_fc4s(shost), bottom->active_fc4_types, - FC_FC4_LIST_SIZE); if (adapter->adapter_features & FSF_FEATURE_FC_SECURITY) adapter->fc_security_algorithms = bottom->fc_security_algorithms; @@ -764,6 +755,7 @@ static void zfcp_fsf_exchange_port_data_handler(struct zfcp_fsf_req *req) */ zfcp_diag_update_xdata(diag_hdr, bottom, false); + zfcp_scsi_shost_update_port_data(req->adapter, bottom); zfcp_fsf_exchange_port_evaluate(req); break; case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE: @@ -772,6 +764,8 @@ static void zfcp_fsf_exchange_port_data_handler(struct zfcp_fsf_req *req) zfcp_fsf_link_down_info_eval(req, &qtcb->header.fsf_status_qual.link_down_info); + + zfcp_scsi_shost_update_port_data(req->adapter, bottom); zfcp_fsf_exchange_port_evaluate(req); break; } diff --git a/drivers/s390/scsi/zfcp_scsi.c b/drivers/s390/scsi/zfcp_scsi.c index e1281a1ce488..f98e4015a0ed 100644 --- a/drivers/s390/scsi/zfcp_scsi.c +++ b/drivers/s390/scsi/zfcp_scsi.c @@ -911,6 +911,25 @@ void zfcp_scsi_shost_update_config_data( } } +void zfcp_scsi_shost_update_port_data( + struct zfcp_adapter *const adapter, + const struct fsf_qtcb_bottom_port *const bottom) +{ + struct Scsi_Host *const shost = adapter->scsi_host; + + if (shost == NULL) + return; + + fc_host_permanent_port_name(shost) = bottom->wwpn; + fc_host_maxframe_size(shost) = bottom->maximum_frame_size; + fc_host_supported_speeds(shost) = + zfcp_fsf_convert_portspeed(bottom->supported_speed); + memcpy(fc_host_supported_fc4s(shost), bottom->supported_fc4_types, + FC_FC4_LIST_SIZE); + memcpy(fc_host_active_fc4s(shost), bottom->active_fc4_types, + FC_FC4_LIST_SIZE); +} + struct fc_function_template zfcp_transport_functions = { .show_starget_port_id = 1, .show_starget_port_name = 1, -- cgit v1.2.3