IB/srpt: Accept GUIDs as port names
Port and ACL information must be configured before an initiator logs in. Make it possible to configure this information before a subnet prefix has been assigned to a port by not only accepting GIDs as target port and initiator port names but by also accepting port GUIDs. Add a 'priv' member to struct se_wwn to allow target drivers to associate their own data with struct se_wwn. Reported-by: Doug Ledford <dledford@redhat.com> References: http://www.spinics.net/lists/linux-rdma/msg39505.html Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com> Cc: Christoph Hellwig <hch@lst.de> Cc: Nicholas Bellinger <nab@linux-iscsi.org> Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
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a3dd3a48a5
commit
2bce1a6d22
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@ -500,6 +500,7 @@ static int srpt_refresh_port(struct srpt_port *sport)
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struct ib_mad_reg_req reg_req;
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struct ib_mad_reg_req reg_req;
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struct ib_port_modify port_modify;
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struct ib_port_modify port_modify;
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struct ib_port_attr port_attr;
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struct ib_port_attr port_attr;
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__be16 *guid;
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int ret;
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int ret;
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memset(&port_modify, 0, sizeof(port_modify));
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memset(&port_modify, 0, sizeof(port_modify));
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@ -522,10 +523,17 @@ static int srpt_refresh_port(struct srpt_port *sport)
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if (ret)
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if (ret)
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goto err_query_port;
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goto err_query_port;
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sport->port_guid_wwn.priv = sport;
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guid = (__be16 *)&sport->gid.global.interface_id;
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snprintf(sport->port_guid, sizeof(sport->port_guid),
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snprintf(sport->port_guid, sizeof(sport->port_guid),
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"0x%016llx%016llx",
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"%04x:%04x:%04x:%04x",
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be64_to_cpu(sport->gid.global.subnet_prefix),
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be16_to_cpu(guid[0]), be16_to_cpu(guid[1]),
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be64_to_cpu(sport->gid.global.interface_id));
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be16_to_cpu(guid[2]), be16_to_cpu(guid[3]));
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sport->port_gid_wwn.priv = sport;
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snprintf(sport->port_gid, sizeof(sport->port_gid),
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"0x%016llx%016llx",
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be64_to_cpu(sport->gid.global.subnet_prefix),
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be64_to_cpu(sport->gid.global.interface_id));
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if (!sport->mad_agent) {
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if (!sport->mad_agent) {
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memset(®_req, 0, sizeof(reg_req));
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memset(®_req, 0, sizeof(reg_req));
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@ -1838,6 +1846,7 @@ static int srpt_cm_req_recv(struct ib_cm_id *cm_id,
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struct srp_login_rej *rej;
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struct srp_login_rej *rej;
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struct ib_cm_rep_param *rep_param;
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struct ib_cm_rep_param *rep_param;
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struct srpt_rdma_ch *ch, *tmp_ch;
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struct srpt_rdma_ch *ch, *tmp_ch;
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__be16 *guid;
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u32 it_iu_len;
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u32 it_iu_len;
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int i, ret = 0;
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int i, ret = 0;
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@ -1983,26 +1992,30 @@ static int srpt_cm_req_recv(struct ib_cm_id *cm_id,
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goto destroy_ib;
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goto destroy_ib;
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}
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}
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/*
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guid = (__be16 *)¶m->primary_path->sgid.global.interface_id;
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* Use the initator port identifier as the session name, when
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snprintf(ch->ini_guid, sizeof(ch->ini_guid), "%04x:%04x:%04x:%04x",
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* checking against se_node_acl->initiatorname[] this can be
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be16_to_cpu(guid[0]), be16_to_cpu(guid[1]),
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* with or without preceeding '0x'.
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be16_to_cpu(guid[2]), be16_to_cpu(guid[3]));
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*/
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snprintf(ch->sess_name, sizeof(ch->sess_name), "0x%016llx%016llx",
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snprintf(ch->sess_name, sizeof(ch->sess_name), "0x%016llx%016llx",
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be64_to_cpu(*(__be64 *)ch->i_port_id),
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be64_to_cpu(*(__be64 *)ch->i_port_id),
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be64_to_cpu(*(__be64 *)(ch->i_port_id + 8)));
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be64_to_cpu(*(__be64 *)(ch->i_port_id + 8)));
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pr_debug("registering session %s\n", ch->sess_name);
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pr_debug("registering session %s\n", ch->sess_name);
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ch->sess = target_alloc_session(&sport->port_tpg_1, 0, 0,
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if (sport->port_guid_tpg.se_tpg_wwn)
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ch->sess = target_alloc_session(&sport->port_guid_tpg, 0, 0,
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TARGET_PROT_NORMAL,
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ch->ini_guid, ch, NULL);
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if (sport->port_gid_tpg.se_tpg_wwn && IS_ERR_OR_NULL(ch->sess))
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ch->sess = target_alloc_session(&sport->port_gid_tpg, 0, 0,
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TARGET_PROT_NORMAL, ch->sess_name, ch,
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TARGET_PROT_NORMAL, ch->sess_name, ch,
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NULL);
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NULL);
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/* Retry without leading "0x" */
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/* Retry without leading "0x" */
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if (IS_ERR(ch->sess))
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if (sport->port_gid_tpg.se_tpg_wwn && IS_ERR_OR_NULL(ch->sess))
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ch->sess = target_alloc_session(&sport->port_tpg_1, 0, 0,
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ch->sess = target_alloc_session(&sport->port_gid_tpg, 0, 0,
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TARGET_PROT_NORMAL,
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TARGET_PROT_NORMAL,
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ch->sess_name + 2, ch, NULL);
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ch->sess_name + 2, ch, NULL);
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if (IS_ERR(ch->sess)) {
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if (IS_ERR_OR_NULL(ch->sess)) {
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pr_info("Rejected login because no ACL has been configured yet for initiator %s.\n",
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pr_info("Rejected login because no ACL has been configured yet for initiator %s.\n",
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ch->sess_name);
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ch->sess_name);
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rej->reason = cpu_to_be32((PTR_ERR(ch->sess) == -ENOMEM) ?
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rej->reason = cpu_to_be32((PTR_ERR(ch->sess) == -ENOMEM) ?
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@ -2420,7 +2433,7 @@ static int srpt_release_sdev(struct srpt_device *sdev)
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return 0;
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return 0;
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}
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}
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static struct srpt_port *__srpt_lookup_port(const char *name)
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static struct se_wwn *__srpt_lookup_wwn(const char *name)
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{
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{
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struct ib_device *dev;
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struct ib_device *dev;
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struct srpt_device *sdev;
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struct srpt_device *sdev;
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@ -2435,23 +2448,25 @@ static struct srpt_port *__srpt_lookup_port(const char *name)
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for (i = 0; i < dev->phys_port_cnt; i++) {
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for (i = 0; i < dev->phys_port_cnt; i++) {
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sport = &sdev->port[i];
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sport = &sdev->port[i];
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if (!strcmp(sport->port_guid, name))
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if (strcmp(sport->port_guid, name) == 0)
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return sport;
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return &sport->port_guid_wwn;
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if (strcmp(sport->port_gid, name) == 0)
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return &sport->port_gid_wwn;
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}
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}
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}
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}
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return NULL;
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return NULL;
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}
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}
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static struct srpt_port *srpt_lookup_port(const char *name)
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static struct se_wwn *srpt_lookup_wwn(const char *name)
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{
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{
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struct srpt_port *sport;
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struct se_wwn *wwn;
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spin_lock(&srpt_dev_lock);
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spin_lock(&srpt_dev_lock);
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sport = __srpt_lookup_port(name);
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wwn = __srpt_lookup_wwn(name);
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spin_unlock(&srpt_dev_lock);
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spin_unlock(&srpt_dev_lock);
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return sport;
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return wwn;
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}
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}
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/**
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/**
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@ -2643,11 +2658,19 @@ static char *srpt_get_fabric_name(void)
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return "srpt";
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return "srpt";
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}
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}
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static struct srpt_port *srpt_tpg_to_sport(struct se_portal_group *tpg)
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{
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return tpg->se_tpg_wwn->priv;
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}
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static char *srpt_get_fabric_wwn(struct se_portal_group *tpg)
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static char *srpt_get_fabric_wwn(struct se_portal_group *tpg)
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{
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{
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struct srpt_port *sport = container_of(tpg, struct srpt_port, port_tpg_1);
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struct srpt_port *sport = srpt_tpg_to_sport(tpg);
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return sport->port_guid;
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WARN_ON_ONCE(tpg != &sport->port_guid_tpg &&
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tpg != &sport->port_gid_tpg);
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return tpg == &sport->port_guid_tpg ? sport->port_guid :
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sport->port_gid;
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}
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}
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static u16 srpt_get_tag(struct se_portal_group *tpg)
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static u16 srpt_get_tag(struct se_portal_group *tpg)
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@ -2737,6 +2760,19 @@ static int srpt_get_tcm_cmd_state(struct se_cmd *se_cmd)
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return srpt_get_cmd_state(ioctx);
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return srpt_get_cmd_state(ioctx);
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}
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}
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static int srpt_parse_guid(u64 *guid, const char *name)
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{
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u16 w[4];
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int ret = -EINVAL;
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if (sscanf(name, "%hx:%hx:%hx:%hx", &w[0], &w[1], &w[2], &w[3]) != 4)
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goto out;
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*guid = get_unaligned_be64(w);
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ret = 0;
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out:
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return ret;
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}
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/**
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/**
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* srpt_parse_i_port_id() - Parse an initiator port ID.
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* srpt_parse_i_port_id() - Parse an initiator port ID.
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* @name: ASCII representation of a 128-bit initiator port ID.
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* @name: ASCII representation of a 128-bit initiator port ID.
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@ -2772,20 +2808,23 @@ out:
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*/
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*/
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static int srpt_init_nodeacl(struct se_node_acl *se_nacl, const char *name)
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static int srpt_init_nodeacl(struct se_node_acl *se_nacl, const char *name)
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{
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{
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u64 guid;
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u8 i_port_id[16];
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u8 i_port_id[16];
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int ret;
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if (srpt_parse_i_port_id(i_port_id, name) < 0) {
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ret = srpt_parse_guid(&guid, name);
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if (ret < 0)
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ret = srpt_parse_i_port_id(i_port_id, name);
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if (ret < 0)
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pr_err("invalid initiator port ID %s\n", name);
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pr_err("invalid initiator port ID %s\n", name);
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return -EINVAL;
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return ret;
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}
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return 0;
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}
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}
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static ssize_t srpt_tpg_attrib_srp_max_rdma_size_show(struct config_item *item,
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static ssize_t srpt_tpg_attrib_srp_max_rdma_size_show(struct config_item *item,
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char *page)
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char *page)
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{
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{
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struct se_portal_group *se_tpg = attrib_to_tpg(item);
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struct se_portal_group *se_tpg = attrib_to_tpg(item);
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struct srpt_port *sport = container_of(se_tpg, struct srpt_port, port_tpg_1);
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struct srpt_port *sport = srpt_tpg_to_sport(se_tpg);
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return sprintf(page, "%u\n", sport->port_attrib.srp_max_rdma_size);
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return sprintf(page, "%u\n", sport->port_attrib.srp_max_rdma_size);
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}
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}
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@ -2794,7 +2833,7 @@ static ssize_t srpt_tpg_attrib_srp_max_rdma_size_store(struct config_item *item,
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const char *page, size_t count)
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const char *page, size_t count)
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{
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{
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struct se_portal_group *se_tpg = attrib_to_tpg(item);
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struct se_portal_group *se_tpg = attrib_to_tpg(item);
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struct srpt_port *sport = container_of(se_tpg, struct srpt_port, port_tpg_1);
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struct srpt_port *sport = srpt_tpg_to_sport(se_tpg);
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unsigned long val;
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unsigned long val;
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int ret;
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int ret;
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@ -2822,7 +2861,7 @@ static ssize_t srpt_tpg_attrib_srp_max_rsp_size_show(struct config_item *item,
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char *page)
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char *page)
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{
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{
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struct se_portal_group *se_tpg = attrib_to_tpg(item);
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struct se_portal_group *se_tpg = attrib_to_tpg(item);
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struct srpt_port *sport = container_of(se_tpg, struct srpt_port, port_tpg_1);
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struct srpt_port *sport = srpt_tpg_to_sport(se_tpg);
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return sprintf(page, "%u\n", sport->port_attrib.srp_max_rsp_size);
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return sprintf(page, "%u\n", sport->port_attrib.srp_max_rsp_size);
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}
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}
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@ -2831,7 +2870,7 @@ static ssize_t srpt_tpg_attrib_srp_max_rsp_size_store(struct config_item *item,
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const char *page, size_t count)
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const char *page, size_t count)
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{
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{
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struct se_portal_group *se_tpg = attrib_to_tpg(item);
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struct se_portal_group *se_tpg = attrib_to_tpg(item);
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struct srpt_port *sport = container_of(se_tpg, struct srpt_port, port_tpg_1);
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struct srpt_port *sport = srpt_tpg_to_sport(se_tpg);
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unsigned long val;
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unsigned long val;
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int ret;
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int ret;
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@ -2859,7 +2898,7 @@ static ssize_t srpt_tpg_attrib_srp_sq_size_show(struct config_item *item,
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char *page)
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char *page)
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{
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{
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struct se_portal_group *se_tpg = attrib_to_tpg(item);
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struct se_portal_group *se_tpg = attrib_to_tpg(item);
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struct srpt_port *sport = container_of(se_tpg, struct srpt_port, port_tpg_1);
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struct srpt_port *sport = srpt_tpg_to_sport(se_tpg);
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return sprintf(page, "%u\n", sport->port_attrib.srp_sq_size);
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return sprintf(page, "%u\n", sport->port_attrib.srp_sq_size);
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}
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}
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@ -2868,7 +2907,7 @@ static ssize_t srpt_tpg_attrib_srp_sq_size_store(struct config_item *item,
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const char *page, size_t count)
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const char *page, size_t count)
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{
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{
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struct se_portal_group *se_tpg = attrib_to_tpg(item);
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struct se_portal_group *se_tpg = attrib_to_tpg(item);
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struct srpt_port *sport = container_of(se_tpg, struct srpt_port, port_tpg_1);
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struct srpt_port *sport = srpt_tpg_to_sport(se_tpg);
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unsigned long val;
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unsigned long val;
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int ret;
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int ret;
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@ -2906,7 +2945,7 @@ static struct configfs_attribute *srpt_tpg_attrib_attrs[] = {
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static ssize_t srpt_tpg_enable_show(struct config_item *item, char *page)
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static ssize_t srpt_tpg_enable_show(struct config_item *item, char *page)
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{
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{
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struct se_portal_group *se_tpg = to_tpg(item);
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struct se_portal_group *se_tpg = to_tpg(item);
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struct srpt_port *sport = container_of(se_tpg, struct srpt_port, port_tpg_1);
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struct srpt_port *sport = srpt_tpg_to_sport(se_tpg);
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return snprintf(page, PAGE_SIZE, "%d\n", (sport->enabled) ? 1: 0);
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return snprintf(page, PAGE_SIZE, "%d\n", (sport->enabled) ? 1: 0);
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}
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}
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@ -2915,7 +2954,7 @@ static ssize_t srpt_tpg_enable_store(struct config_item *item,
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const char *page, size_t count)
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const char *page, size_t count)
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{
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{
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struct se_portal_group *se_tpg = to_tpg(item);
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struct se_portal_group *se_tpg = to_tpg(item);
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struct srpt_port *sport = container_of(se_tpg, struct srpt_port, port_tpg_1);
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struct srpt_port *sport = srpt_tpg_to_sport(se_tpg);
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struct srpt_device *sdev = sport->sdev;
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struct srpt_device *sdev = sport->sdev;
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struct srpt_rdma_ch *ch;
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struct srpt_rdma_ch *ch;
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unsigned long tmp;
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unsigned long tmp;
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@ -2967,15 +3006,19 @@ static struct se_portal_group *srpt_make_tpg(struct se_wwn *wwn,
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struct config_group *group,
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struct config_group *group,
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const char *name)
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const char *name)
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{
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{
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struct srpt_port *sport = container_of(wwn, struct srpt_port, port_wwn);
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struct srpt_port *sport = wwn->priv;
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static struct se_portal_group *tpg;
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int res;
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int res;
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/* Initialize sport->port_wwn and sport->port_tpg_1 */
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WARN_ON_ONCE(wwn != &sport->port_guid_wwn &&
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res = core_tpg_register(&sport->port_wwn, &sport->port_tpg_1, SCSI_PROTOCOL_SRP);
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wwn != &sport->port_gid_wwn);
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tpg = wwn == &sport->port_guid_wwn ? &sport->port_guid_tpg :
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&sport->port_gid_tpg;
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res = core_tpg_register(wwn, tpg, SCSI_PROTOCOL_SRP);
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if (res)
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if (res)
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return ERR_PTR(res);
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return ERR_PTR(res);
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||||||
|
|
||||||
return &sport->port_tpg_1;
|
return tpg;
|
||||||
}
|
}
|
||||||
|
|
||||||
/**
|
/**
|
||||||
|
@ -2984,11 +3027,10 @@ static struct se_portal_group *srpt_make_tpg(struct se_wwn *wwn,
|
||||||
*/
|
*/
|
||||||
static void srpt_drop_tpg(struct se_portal_group *tpg)
|
static void srpt_drop_tpg(struct se_portal_group *tpg)
|
||||||
{
|
{
|
||||||
struct srpt_port *sport = container_of(tpg,
|
struct srpt_port *sport = srpt_tpg_to_sport(tpg);
|
||||||
struct srpt_port, port_tpg_1);
|
|
||||||
|
|
||||||
sport->enabled = false;
|
sport->enabled = false;
|
||||||
core_tpg_deregister(&sport->port_tpg_1);
|
core_tpg_deregister(tpg);
|
||||||
}
|
}
|
||||||
|
|
||||||
/**
|
/**
|
||||||
|
@ -2999,19 +3041,7 @@ static struct se_wwn *srpt_make_tport(struct target_fabric_configfs *tf,
|
||||||
struct config_group *group,
|
struct config_group *group,
|
||||||
const char *name)
|
const char *name)
|
||||||
{
|
{
|
||||||
struct srpt_port *sport;
|
return srpt_lookup_wwn(name) ? : ERR_PTR(-EINVAL);
|
||||||
int ret;
|
|
||||||
|
|
||||||
sport = srpt_lookup_port(name);
|
|
||||||
pr_debug("make_tport(%s)\n", name);
|
|
||||||
ret = -EINVAL;
|
|
||||||
if (!sport)
|
|
||||||
goto err;
|
|
||||||
|
|
||||||
return &sport->port_wwn;
|
|
||||||
|
|
||||||
err:
|
|
||||||
return ERR_PTR(ret);
|
|
||||||
}
|
}
|
||||||
|
|
||||||
/**
|
/**
|
||||||
|
@ -3020,9 +3050,6 @@ err:
|
||||||
*/
|
*/
|
||||||
static void srpt_drop_tport(struct se_wwn *wwn)
|
static void srpt_drop_tport(struct se_wwn *wwn)
|
||||||
{
|
{
|
||||||
struct srpt_port *sport = container_of(wwn, struct srpt_port, port_wwn);
|
|
||||||
|
|
||||||
pr_debug("drop_tport(%s\n", config_item_name(&sport->port_wwn.wwn_group.cg_item));
|
|
||||||
}
|
}
|
||||||
|
|
||||||
static ssize_t srpt_wwn_version_show(struct config_item *item, char *buf)
|
static ssize_t srpt_wwn_version_show(struct config_item *item, char *buf)
|
||||||
|
|
|
@ -258,6 +258,7 @@ enum rdma_ch_state {
|
||||||
* against concurrent modification by the cm_id spinlock.
|
* against concurrent modification by the cm_id spinlock.
|
||||||
* @sess: Session information associated with this SRP channel.
|
* @sess: Session information associated with this SRP channel.
|
||||||
* @sess_name: Session name.
|
* @sess_name: Session name.
|
||||||
|
* @ini_guid: Initiator port GUID.
|
||||||
* @release_work: Allows scheduling of srpt_release_channel().
|
* @release_work: Allows scheduling of srpt_release_channel().
|
||||||
* @release_done: Enables waiting for srpt_release_channel() completion.
|
* @release_done: Enables waiting for srpt_release_channel() completion.
|
||||||
*/
|
*/
|
||||||
|
@ -284,6 +285,7 @@ struct srpt_rdma_ch {
|
||||||
struct list_head cmd_wait_list;
|
struct list_head cmd_wait_list;
|
||||||
struct se_session *sess;
|
struct se_session *sess;
|
||||||
u8 sess_name[36];
|
u8 sess_name[36];
|
||||||
|
u8 ini_guid[24];
|
||||||
struct work_struct release_work;
|
struct work_struct release_work;
|
||||||
struct completion *release_done;
|
struct completion *release_done;
|
||||||
};
|
};
|
||||||
|
@ -306,28 +308,34 @@ struct srpt_port_attrib {
|
||||||
* @mad_agent: per-port management datagram processing information.
|
* @mad_agent: per-port management datagram processing information.
|
||||||
* @enabled: Whether or not this target port is enabled.
|
* @enabled: Whether or not this target port is enabled.
|
||||||
* @port_guid: ASCII representation of Port GUID
|
* @port_guid: ASCII representation of Port GUID
|
||||||
|
* @port_gid: ASCII representation of Port GID
|
||||||
* @port: one-based port number.
|
* @port: one-based port number.
|
||||||
* @sm_lid: cached value of the port's sm_lid.
|
* @sm_lid: cached value of the port's sm_lid.
|
||||||
* @lid: cached value of the port's lid.
|
* @lid: cached value of the port's lid.
|
||||||
* @gid: cached value of the port's gid.
|
* @gid: cached value of the port's gid.
|
||||||
* @port_acl_lock spinlock for port_acl_list:
|
* @port_acl_lock spinlock for port_acl_list:
|
||||||
* @work: work structure for refreshing the aforementioned cached values.
|
* @work: work structure for refreshing the aforementioned cached values.
|
||||||
* @port_tpg_1 Target portal group = 1 data.
|
* @port_guid_tpg: TPG associated with target port GUID.
|
||||||
* @port_wwn: Target core WWN data.
|
* @port_guid_wwn: WWN associated with target port GUID.
|
||||||
|
* @port_gid_tpg: TPG associated with target port GID.
|
||||||
|
* @port_gid_wwn: WWN associated with target port GID.
|
||||||
* @port_acl_list: Head of the list with all node ACLs for this port.
|
* @port_acl_list: Head of the list with all node ACLs for this port.
|
||||||
*/
|
*/
|
||||||
struct srpt_port {
|
struct srpt_port {
|
||||||
struct srpt_device *sdev;
|
struct srpt_device *sdev;
|
||||||
struct ib_mad_agent *mad_agent;
|
struct ib_mad_agent *mad_agent;
|
||||||
bool enabled;
|
bool enabled;
|
||||||
u8 port_guid[64];
|
u8 port_guid[24];
|
||||||
|
u8 port_gid[64];
|
||||||
u8 port;
|
u8 port;
|
||||||
u16 sm_lid;
|
u16 sm_lid;
|
||||||
u16 lid;
|
u16 lid;
|
||||||
union ib_gid gid;
|
union ib_gid gid;
|
||||||
struct work_struct work;
|
struct work_struct work;
|
||||||
struct se_portal_group port_tpg_1;
|
struct se_portal_group port_guid_tpg;
|
||||||
struct se_wwn port_wwn;
|
struct se_wwn port_guid_wwn;
|
||||||
|
struct se_portal_group port_gid_tpg;
|
||||||
|
struct se_wwn port_gid_wwn;
|
||||||
struct srpt_port_attrib port_attrib;
|
struct srpt_port_attrib port_attrib;
|
||||||
};
|
};
|
||||||
|
|
||||||
|
|
|
@ -448,6 +448,7 @@ static void core_tpg_lun_ref_release(struct percpu_ref *ref)
|
||||||
complete(&lun->lun_ref_comp);
|
complete(&lun->lun_ref_comp);
|
||||||
}
|
}
|
||||||
|
|
||||||
|
/* Does not change se_wwn->priv. */
|
||||||
int core_tpg_register(
|
int core_tpg_register(
|
||||||
struct se_wwn *se_wwn,
|
struct se_wwn *se_wwn,
|
||||||
struct se_portal_group *se_tpg,
|
struct se_portal_group *se_tpg,
|
||||||
|
|
|
@ -909,6 +909,7 @@ static inline struct se_portal_group *param_to_tpg(struct config_item *item)
|
||||||
|
|
||||||
struct se_wwn {
|
struct se_wwn {
|
||||||
struct target_fabric_configfs *wwn_tf;
|
struct target_fabric_configfs *wwn_tf;
|
||||||
|
void *priv;
|
||||||
struct config_group wwn_group;
|
struct config_group wwn_group;
|
||||||
struct config_group fabric_stat_group;
|
struct config_group fabric_stat_group;
|
||||||
};
|
};
|
||||||
|
|
Loading…
Reference in New Issue