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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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7474f52a82
This patch performs configfs_depend_item() during TPG enable for base_tpg (eg: non-NPIV) ports, and configfs_undepend_item() during TPG disable for base_tpg. This is done to ensure that any attempt to configfs rmdir a base_tpg with active NPIV ports will fail with -EBUSY, until all associated NPIV ports have been explicitly shutdown and base_tpg disabled. Note that the actual configfs_[un]depend_item() is done from seperate process context, as these are not intended to be called directly from configfs callbacks. Cc: Sawan Chandak <sawan.chandak@qlogic.com> Cc: Quinn Tran <quinn.tran@qlogic.com> Cc: Saurav Kashyap <saurav.kashyap@qlogic.com> Cc: Giridhar Malavali <giridhar.malavali@qlogic.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
83 lines
2.6 KiB
C
83 lines
2.6 KiB
C
#include <target/target_core_base.h>
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#include <linux/btree.h>
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#define TCM_QLA2XXX_VERSION "v0.1"
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/* length of ASCII WWPNs including pad */
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#define TCM_QLA2XXX_NAMELEN 32
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/* lenth of ASCII NPIV 'WWPN+WWNN' including pad */
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#define TCM_QLA2XXX_NPIV_NAMELEN 66
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#include "qla_target.h"
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struct tcm_qla2xxx_nacl {
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/* From libfc struct fc_rport->port_id */
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u32 nport_id;
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/* Binary World Wide unique Node Name for remote FC Initiator Nport */
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u64 nport_wwnn;
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/* ASCII formatted WWPN for FC Initiator Nport */
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char nport_name[TCM_QLA2XXX_NAMELEN];
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/* Pointer to qla_tgt_sess */
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struct qla_tgt_sess *qla_tgt_sess;
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/* Pointer to TCM FC nexus */
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struct se_session *nport_nexus;
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/* Returned by tcm_qla2xxx_make_nodeacl() */
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struct se_node_acl se_node_acl;
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};
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struct tcm_qla2xxx_tpg_attrib {
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int generate_node_acls;
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int cache_dynamic_acls;
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int demo_mode_write_protect;
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int prod_mode_write_protect;
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int demo_mode_login_only;
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};
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struct tcm_qla2xxx_tpg {
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/* FC lport target portal group tag for TCM */
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u16 lport_tpgt;
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/* Atomic bit to determine TPG active status */
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atomic_t lport_tpg_enabled;
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/* Pointer back to tcm_qla2xxx_lport */
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struct tcm_qla2xxx_lport *lport;
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/* Used by tcm_qla2xxx_tpg_attrib_cit */
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struct tcm_qla2xxx_tpg_attrib tpg_attrib;
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/* Returned by tcm_qla2xxx_make_tpg() */
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struct se_portal_group se_tpg;
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/* Items for dealing with configfs_depend_item */
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struct completion tpg_base_comp;
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struct work_struct tpg_base_work;
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};
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struct tcm_qla2xxx_fc_loopid {
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struct se_node_acl *se_nacl;
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};
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struct tcm_qla2xxx_lport {
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/* SCSI protocol the lport is providing */
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u8 lport_proto_id;
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/* Binary World Wide unique Port Name for FC Target Lport */
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u64 lport_wwpn;
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/* Binary World Wide unique Port Name for FC NPIV Target Lport */
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u64 lport_npiv_wwpn;
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/* Binary World Wide unique Node Name for FC NPIV Target Lport */
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u64 lport_npiv_wwnn;
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/* ASCII formatted WWPN for FC Target Lport */
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char lport_name[TCM_QLA2XXX_NAMELEN];
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/* ASCII formatted naa WWPN for VPD page 83 etc */
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char lport_naa_name[TCM_QLA2XXX_NAMELEN];
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/* ASCII formatted WWPN+WWNN for NPIV FC Target Lport */
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char lport_npiv_name[TCM_QLA2XXX_NPIV_NAMELEN];
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/* map for fc_port pointers in 24-bit FC Port ID space */
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struct btree_head32 lport_fcport_map;
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/* vmalloc-ed memory for fc_port pointers for 16-bit FC loop ID */
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struct tcm_qla2xxx_fc_loopid *lport_loopid_map;
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/* Pointer to struct scsi_qla_host from qla2xxx LLD */
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struct scsi_qla_host *qla_vha;
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/* Pointer to struct qla_tgt pointer */
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struct qla_tgt lport_qla_tgt;
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/* Pointer to TPG=1 for non NPIV mode */
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struct tcm_qla2xxx_tpg *tpg_1;
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/* Returned by tcm_qla2xxx_make_lport() */
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struct se_wwn lport_wwn;
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};
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