return effects;
}
-static void nvme_passthru_end(struct nvme_ctrl *ctrl, u32 effects,
- struct nvme_command *cmd, int status)
+void nvme_passthru_end(struct nvme_ctrl *ctrl, u32 effects,
+ struct nvme_command *cmd, int status)
{
if (effects & NVME_CMD_EFFECTS_CSE_MASK) {
nvme_unfreeze(ctrl);
break;
}
}
+EXPORT_SYMBOL_NS_GPL(nvme_passthru_end, NVME_TARGET_PASSTHRU);
-int nvme_execute_passthru_rq(struct request *rq)
+int nvme_execute_passthru_rq(struct request *rq, u32 *effects)
{
struct nvme_command *cmd = nvme_req(rq)->cmd;
struct nvme_ctrl *ctrl = nvme_req(rq)->ctrl;
struct nvme_ns *ns = rq->q->queuedata;
- u32 effects;
- int ret;
- effects = nvme_passthru_start(ctrl, ns, cmd->common.opcode);
- ret = nvme_execute_rq(rq, false);
- if (effects) /* nothing to be done for zero cmd effects */
- nvme_passthru_end(ctrl, effects, cmd, ret);
-
- return ret;
+ *effects = nvme_passthru_start(ctrl, ns, cmd->common.opcode);
+ return nvme_execute_rq(rq, false);
}
EXPORT_SYMBOL_NS_GPL(nvme_execute_passthru_rq, NVME_TARGET_PASSTHRU);
if(!(ctrl->quirks & NVME_QUIRK_IGNORE_DEV_SUBNQN)) {
nqnlen = strnlen(id->subnqn, NVMF_NQN_SIZE);
if (nqnlen > 0 && nqnlen < NVMF_NQN_SIZE) {
- strlcpy(subsys->subnqn, id->subnqn, NVMF_NQN_SIZE);
+ strscpy(subsys->subnqn, id->subnqn, NVMF_NQN_SIZE);
return;
}
dev_warn(ctrl->device, "missing or invalid SUBNQN field.\n");
}
- /* Generate a "fake" NQN per Figure 254 in NVMe 1.3 + ECN 001 */
+ /*
+ * Generate a "fake" NQN similar to the one in Section 4.5 of the NVMe
+ * Base Specification 2.0. It is slightly different from the format
+ * specified there due to historic reasons, and we can't change it now.
+ */
off = snprintf(subsys->subnqn, NVMF_NQN_SIZE,
"nqn.2014.08.org.nvmexpress:%04x%04x",
le16_to_cpu(id->vid), le16_to_cpu(id->ssvid));
nvme_init_subnqn(subsys, ctrl, id);
memcpy(subsys->serial, id->sn, sizeof(subsys->serial));
memcpy(subsys->model, id->mn, sizeof(subsys->model));
- memcpy(subsys->firmware_rev, id->fr, sizeof(subsys->firmware_rev));
subsys->vendor_id = le16_to_cpu(id->vid);
subsys->cmic = id->cmic;
ctrl->quirks |= core_quirks[i].quirks;
}
}
+ memcpy(ctrl->subsys->firmware_rev, id->fr,
+ sizeof(ctrl->subsys->firmware_rev));
if (force_apst && (ctrl->quirks & NVME_QUIRK_NO_DEEPEST_PS)) {
dev_warn(ctrl->device, "forcibly allowing all power states due to nvme_core.force_apst -- use at your own risk\n");
.unlocked_ioctl = nvme_ns_chr_ioctl,
.compat_ioctl = compat_ptr_ioctl,
.uring_cmd = nvme_ns_chr_uring_cmd,
+ .uring_cmd_iopoll = nvme_ns_chr_uring_cmd_iopoll,
};
static int nvme_add_ns_cdev(struct nvme_ns *ns)
}
EXPORT_SYMBOL_GPL(nvme_complete_async_event);
+int nvme_alloc_admin_tag_set(struct nvme_ctrl *ctrl, struct blk_mq_tag_set *set,
+ const struct blk_mq_ops *ops, unsigned int flags,
+ unsigned int cmd_size)
+{
+ int ret;
+
+ memset(set, 0, sizeof(*set));
+ set->ops = ops;
+ set->queue_depth = NVME_AQ_MQ_TAG_DEPTH;
+ if (ctrl->ops->flags & NVME_F_FABRICS)
+ set->reserved_tags = NVMF_RESERVED_TAGS;
+ set->numa_node = ctrl->numa_node;
+ set->flags = flags;
+ set->cmd_size = cmd_size;
+ set->driver_data = ctrl;
+ set->nr_hw_queues = 1;
+ set->timeout = NVME_ADMIN_TIMEOUT;
+ ret = blk_mq_alloc_tag_set(set);
+ if (ret)
+ return ret;
+
+ ctrl->admin_q = blk_mq_init_queue(set);
+ if (IS_ERR(ctrl->admin_q)) {
+ ret = PTR_ERR(ctrl->admin_q);
+ goto out_free_tagset;
+ }
+
+ if (ctrl->ops->flags & NVME_F_FABRICS) {
+ ctrl->fabrics_q = blk_mq_init_queue(set);
+ if (IS_ERR(ctrl->fabrics_q)) {
+ ret = PTR_ERR(ctrl->fabrics_q);
+ goto out_cleanup_admin_q;
+ }
+ }
+
+ ctrl->admin_tagset = set;
+ return 0;
+
+out_cleanup_admin_q:
+ blk_mq_destroy_queue(ctrl->fabrics_q);
+out_free_tagset:
+ blk_mq_free_tag_set(ctrl->admin_tagset);
+ return ret;
+}
+EXPORT_SYMBOL_GPL(nvme_alloc_admin_tag_set);
+
+void nvme_remove_admin_tag_set(struct nvme_ctrl *ctrl)
+{
+ blk_mq_destroy_queue(ctrl->admin_q);
+ if (ctrl->ops->flags & NVME_F_FABRICS)
+ blk_mq_destroy_queue(ctrl->fabrics_q);
+ blk_mq_free_tag_set(ctrl->admin_tagset);
+}
+EXPORT_SYMBOL_GPL(nvme_remove_admin_tag_set);
+
+int nvme_alloc_io_tag_set(struct nvme_ctrl *ctrl, struct blk_mq_tag_set *set,
+ const struct blk_mq_ops *ops, unsigned int flags,
+ unsigned int cmd_size)
+{
+ int ret;
+
+ memset(set, 0, sizeof(*set));
+ set->ops = ops;
+ set->queue_depth = ctrl->sqsize + 1;
+ set->reserved_tags = NVMF_RESERVED_TAGS;
+ set->numa_node = ctrl->numa_node;
+ set->flags = flags;
+ set->cmd_size = cmd_size,
+ set->driver_data = ctrl;
+ set->nr_hw_queues = ctrl->queue_count - 1;
+ set->timeout = NVME_IO_TIMEOUT;
+ if (ops->map_queues)
+ set->nr_maps = ctrl->opts->nr_poll_queues ? HCTX_MAX_TYPES : 2;
+ ret = blk_mq_alloc_tag_set(set);
+ if (ret)
+ return ret;
+
+ if (ctrl->ops->flags & NVME_F_FABRICS) {
+ ctrl->connect_q = blk_mq_init_queue(set);
+ if (IS_ERR(ctrl->connect_q)) {
+ ret = PTR_ERR(ctrl->connect_q);
+ goto out_free_tag_set;
+ }
+ }
+
+ ctrl->tagset = set;
+ return 0;
+
+out_free_tag_set:
+ blk_mq_free_tag_set(set);
+ return ret;
+}
+EXPORT_SYMBOL_GPL(nvme_alloc_io_tag_set);
+
+void nvme_remove_io_tag_set(struct nvme_ctrl *ctrl)
+{
+ if (ctrl->ops->flags & NVME_F_FABRICS)
+ blk_mq_destroy_queue(ctrl->connect_q);
+ blk_mq_free_tag_set(ctrl->tagset);
+}
+EXPORT_SYMBOL_GPL(nvme_remove_io_tag_set);
+
void nvme_stop_ctrl(struct nvme_ctrl *ctrl)
{
nvme_mpath_stop(ctrl);
nvme_enable_aen(ctrl);
+ /*
+ * persistent discovery controllers need to send indication to userspace
+ * to re-read the discovery log page to learn about possible changes
+ * that were missed. We identify persistent discovery controllers by
+ * checking that they started once before, hence are reconnecting back.
+ */
+ if (test_and_set_bit(NVME_CTRL_STARTED_ONCE, &ctrl->flags) &&
+ nvme_discovery_ctrl(ctrl))
+ nvme_change_uevent(ctrl, "NVME_EVENT=rediscover");
+
if (ctrl->queue_count > 1) {
nvme_queue_scan(ctrl);
nvme_start_queues(ctrl);
projects / linux-block.git / blobdiff