diff options
-rw-r--r-- | drivers/nvme/target/configfs.c | 30 | ||||
-rw-r--r-- | drivers/nvme/target/core.c | 2 | ||||
-rw-r--r-- | drivers/nvme/target/discovery.c | 68 | ||||
-rw-r--r-- | drivers/nvme/target/nvmet.h | 11 |
4 files changed, 99 insertions, 12 deletions
diff --git a/drivers/nvme/target/configfs.c b/drivers/nvme/target/configfs.c index d895579b6c5d..d37fd7713bbc 100644 --- a/drivers/nvme/target/configfs.c +++ b/drivers/nvme/target/configfs.c @@ -25,6 +25,9 @@ static const struct config_item_type nvmet_host_type; static const struct config_item_type nvmet_subsys_type; +static LIST_HEAD(nvmet_ports_list); +struct list_head *nvmet_ports = &nvmet_ports_list; + static const struct nvmet_transport_name { u8 type; const char *name; @@ -646,7 +649,8 @@ static int nvmet_port_subsys_allow_link(struct config_item *parent, } list_add_tail(&link->entry, &port->subsystems); - nvmet_genctr++; + nvmet_port_disc_changed(port, subsys); + up_write(&nvmet_config_sem); return 0; @@ -673,7 +677,8 @@ static void nvmet_port_subsys_drop_link(struct config_item *parent, found: list_del(&p->entry); - nvmet_genctr++; + nvmet_port_disc_changed(port, subsys); + if (list_empty(&port->subsystems)) nvmet_disable_port(port); up_write(&nvmet_config_sem); @@ -722,7 +727,8 @@ static int nvmet_allowed_hosts_allow_link(struct config_item *parent, goto out_free_link; } list_add_tail(&link->entry, &subsys->hosts); - nvmet_genctr++; + nvmet_subsys_disc_changed(subsys, host); + up_write(&nvmet_config_sem); return 0; out_free_link: @@ -748,7 +754,8 @@ static void nvmet_allowed_hosts_drop_link(struct config_item *parent, found: list_del(&p->entry); - nvmet_genctr++; + nvmet_subsys_disc_changed(subsys, host); + up_write(&nvmet_config_sem); kfree(p); } @@ -787,7 +794,11 @@ static ssize_t nvmet_subsys_attr_allow_any_host_store(struct config_item *item, goto out_unlock; } - subsys->allow_any_host = allow_any_host; + if (subsys->allow_any_host != allow_any_host) { + subsys->allow_any_host = allow_any_host; + nvmet_subsys_disc_changed(subsys, NULL); + } + out_unlock: up_write(&nvmet_config_sem); return ret ? ret : count; @@ -936,7 +947,7 @@ static ssize_t nvmet_referral_enable_store(struct config_item *item, if (enable) nvmet_referral_enable(parent, port); else - nvmet_referral_disable(port); + nvmet_referral_disable(parent, port); return count; inval: @@ -962,9 +973,10 @@ static struct configfs_attribute *nvmet_referral_attrs[] = { static void nvmet_referral_release(struct config_item *item) { + struct nvmet_port *parent = to_nvmet_port(item->ci_parent->ci_parent); struct nvmet_port *port = to_nvmet_port(item); - nvmet_referral_disable(port); + nvmet_referral_disable(parent, port); kfree(port); } @@ -1137,6 +1149,8 @@ static void nvmet_port_release(struct config_item *item) { struct nvmet_port *port = to_nvmet_port(item); + list_del(&port->global_entry); + kfree(port->ana_state); kfree(port); } @@ -1189,6 +1203,8 @@ static struct config_group *nvmet_ports_make(struct config_group *group, port->ana_state[i] = NVME_ANA_INACCESSIBLE; } + list_add(&port->global_entry, &nvmet_ports_list); + INIT_LIST_HEAD(&port->entry); INIT_LIST_HEAD(&port->subsystems); INIT_LIST_HEAD(&port->referrals); diff --git a/drivers/nvme/target/core.c b/drivers/nvme/target/core.c index 849080b4115c..5aa5a3cc5395 100644 --- a/drivers/nvme/target/core.c +++ b/drivers/nvme/target/core.c @@ -130,7 +130,7 @@ static void nvmet_async_event_work(struct work_struct *work) } } -static void nvmet_add_async_event(struct nvmet_ctrl *ctrl, u8 event_type, +void nvmet_add_async_event(struct nvmet_ctrl *ctrl, u8 event_type, u8 event_info, u8 log_page) { struct nvmet_async_event *aen; diff --git a/drivers/nvme/target/discovery.c b/drivers/nvme/target/discovery.c index 5fbb1bb2c4fc..eb45ebc3ac2c 100644 --- a/drivers/nvme/target/discovery.c +++ b/drivers/nvme/target/discovery.c @@ -20,24 +20,82 @@ struct nvmet_subsys *nvmet_disc_subsys; u64 nvmet_genctr; +static void __nvmet_disc_changed(struct nvmet_port *port, + struct nvmet_ctrl *ctrl) +{ + if (ctrl->port != port) + return; + + if (nvmet_aen_bit_disabled(ctrl, NVME_AEN_BIT_DISC_CHANGE)) + return; + + nvmet_add_async_event(ctrl, NVME_AER_TYPE_NOTICE, + NVME_AER_NOTICE_DISC_CHANGED, NVME_LOG_DISC); +} + +void nvmet_port_disc_changed(struct nvmet_port *port, + struct nvmet_subsys *subsys) +{ + struct nvmet_ctrl *ctrl; + + nvmet_genctr++; + + list_for_each_entry(ctrl, &nvmet_disc_subsys->ctrls, subsys_entry) { + if (subsys && !nvmet_host_allowed(subsys, ctrl->hostnqn)) + continue; + + __nvmet_disc_changed(port, ctrl); + } +} + +static void __nvmet_subsys_disc_changed(struct nvmet_port *port, + struct nvmet_subsys *subsys, + struct nvmet_host *host) +{ + struct nvmet_ctrl *ctrl; + + list_for_each_entry(ctrl, &nvmet_disc_subsys->ctrls, subsys_entry) { + if (host && strcmp(nvmet_host_name(host), ctrl->hostnqn)) + continue; + + __nvmet_disc_changed(port, ctrl); + } +} + +void nvmet_subsys_disc_changed(struct nvmet_subsys *subsys, + struct nvmet_host *host) +{ + struct nvmet_port *port; + struct nvmet_subsys_link *s; + + nvmet_genctr++; + + list_for_each_entry(port, nvmet_ports, global_entry) + list_for_each_entry(s, &port->subsystems, entry) { + if (s->subsys != subsys) + continue; + __nvmet_subsys_disc_changed(port, subsys, host); + } +} + void nvmet_referral_enable(struct nvmet_port *parent, struct nvmet_port *port) { down_write(&nvmet_config_sem); if (list_empty(&port->entry)) { list_add_tail(&port->entry, &parent->referrals); port->enabled = true; - nvmet_genctr++; + nvmet_port_disc_changed(parent, NULL); } up_write(&nvmet_config_sem); } -void nvmet_referral_disable(struct nvmet_port *port) +void nvmet_referral_disable(struct nvmet_port *parent, struct nvmet_port *port) { down_write(&nvmet_config_sem); if (!list_empty(&port->entry)) { port->enabled = false; list_del_init(&port->entry); - nvmet_genctr++; + nvmet_port_disc_changed(parent, NULL); } up_write(&nvmet_config_sem); } @@ -136,6 +194,8 @@ static void nvmet_execute_get_disc_log_page(struct nvmet_req *req) hdr->numrec = cpu_to_le64(numrec); hdr->recfmt = cpu_to_le16(0); + nvmet_clear_aen_bit(req, NVME_AEN_BIT_DISC_CHANGE); + up_read(&nvmet_config_sem); status = nvmet_copy_to_sgl(req, 0, hdr, data_len); @@ -174,6 +234,8 @@ static void nvmet_execute_identify_disc_ctrl(struct nvmet_req *req) if (req->port->inline_data_size) id->sgls |= cpu_to_le32(1 << 20); + id->oaes = cpu_to_le32(NVMET_DISC_AEN_CFG_OPTIONAL); + strlcpy(id->subnqn, ctrl->subsys->subsysnqn, sizeof(id->subnqn)); status = nvmet_copy_to_sgl(req, 0, id, sizeof(*id)); diff --git a/drivers/nvme/target/nvmet.h b/drivers/nvme/target/nvmet.h index 05b98f25d65c..31474940e373 100644 --- a/drivers/nvme/target/nvmet.h +++ b/drivers/nvme/target/nvmet.h @@ -139,6 +139,7 @@ struct nvmet_port { struct list_head subsystems; struct config_group referrals_group; struct list_head referrals; + struct list_head global_entry; struct config_group ana_groups_group; struct nvmet_ana_group ana_default_group; enum nvme_ana_state *ana_state; @@ -422,7 +423,7 @@ int nvmet_enable_port(struct nvmet_port *port); void nvmet_disable_port(struct nvmet_port *port); void nvmet_referral_enable(struct nvmet_port *parent, struct nvmet_port *port); -void nvmet_referral_disable(struct nvmet_port *port); +void nvmet_referral_disable(struct nvmet_port *parent, struct nvmet_port *port); u16 nvmet_copy_to_sgl(struct nvmet_req *req, off_t off, const void *buf, size_t len); @@ -432,6 +433,14 @@ u16 nvmet_zero_sgl(struct nvmet_req *req, off_t off, size_t len); u32 nvmet_get_log_page_len(struct nvme_command *cmd); +extern struct list_head *nvmet_ports; +void nvmet_port_disc_changed(struct nvmet_port *port, + struct nvmet_subsys *subsys); +void nvmet_subsys_disc_changed(struct nvmet_subsys *subsys, + struct nvmet_host *host); +void nvmet_add_async_event(struct nvmet_ctrl *ctrl, u8 event_type, + u8 event_info, u8 log_page); + #define NVMET_QUEUE_SIZE 1024 #define NVMET_NR_QUEUES 128 #define NVMET_MAX_CMD NVMET_QUEUE_SIZE |