nvme fixes for Linux 5.19

- more quirks (Lamarque Vieira Souza, Pablo Greco)
  - fix a fabrics disconnect regression (Ruozhu Li)
  - fix a nvmet-tcp data_digest calculation regression (Sagi Grimberg)
  - fix nvme-tcp send failure handling (Sagi Grimberg)
  - fix a regression with nvmet-loop and passthrough controllers
    (Alan Adamson)
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Merge tag 'nvme-5.19-2022-06-30' of git://git.infradead.org/nvme into block-5.19

Pull NVMe fixes from Christoph:

"nvme fixes for Linux 5.19

 - more quirks (Lamarque Vieira Souza, Pablo Greco)
 - fix a fabrics disconnect regression (Ruozhu Li)
 - fix a nvmet-tcp data_digest calculation regression (Sagi Grimberg)
 - fix nvme-tcp send failure handling (Sagi Grimberg)
 - fix a regression with nvmet-loop and passthrough controllers
   (Alan Adamson)"

* tag 'nvme-5.19-2022-06-30' of git://git.infradead.org/nvme:
  nvme-pci: add NVME_QUIRK_BOGUS_NID for ADATA IM2P33F8ABR1
  nvmet: add a clear_ids attribute for passthru targets
  nvme: fix regression when disconnect a recovering ctrl
  nvme-pci: add NVME_QUIRK_BOGUS_NID for ADATA XPG SX6000LNP (AKA SPECTRIX S40G)
  nvme-tcp: always fail a request when sending it failed
  nvmet-tcp: fix regression in data_digest calculation

drivers/nvme/host/core.c

@@ -4595,6 +4595,8 @@ void nvme_stop_ctrl(struct nvme_ctrl *ctrl)
 	nvme_stop_failfast_work(ctrl);
 	flush_work(&ctrl->async_event_work);
 	cancel_work_sync(&ctrl->fw_act_work);
+	if (ctrl->ops->stop_ctrl)
+		ctrl->ops->stop_ctrl(ctrl);
 }
 EXPORT_SYMBOL_GPL(nvme_stop_ctrl);
 

drivers/nvme/host/nvme.h

@@ -502,6 +502,7 @@ struct nvme_ctrl_ops {
 	void (*free_ctrl)(struct nvme_ctrl *ctrl);
 	void (*submit_async_event)(struct nvme_ctrl *ctrl);
 	void (*delete_ctrl)(struct nvme_ctrl *ctrl);
+	void (*stop_ctrl)(struct nvme_ctrl *ctrl);
 	int (*get_address)(struct nvme_ctrl *ctrl, char *buf, int size);
 	void (*print_device_info)(struct nvme_ctrl *ctrl);
 };

drivers/nvme/host/pci.c

@@ -3469,8 +3469,11 @@ static const struct pci_device_id nvme_id_table[] = {
 	{ PCI_DEVICE(0x1b4b, 0x1092),	/* Lexar 256 GB SSD */
 		.driver_data = NVME_QUIRK_NO_NS_DESC_LIST |
 				NVME_QUIRK_IGNORE_DEV_SUBNQN, },
+	{ PCI_DEVICE(0x1cc1, 0x33f8),   /* ADATA IM2P33F8ABR1 1 TB */
+		.driver_data = NVME_QUIRK_BOGUS_NID, },
 	{ PCI_DEVICE(0x10ec, 0x5762),   /* ADATA SX6000LNP */
-		.driver_data = NVME_QUIRK_IGNORE_DEV_SUBNQN, },
+		.driver_data = NVME_QUIRK_IGNORE_DEV_SUBNQN |
+				NVME_QUIRK_BOGUS_NID, },
 	{ PCI_DEVICE(0x1cc1, 0x8201),   /* ADATA SX8200PNP 512GB */
 		.driver_data = NVME_QUIRK_NO_DEEPEST_PS |
 				NVME_QUIRK_IGNORE_DEV_SUBNQN, },

drivers/nvme/host/rdma.c

@@ -1048,6 +1048,14 @@ static void nvme_rdma_teardown_io_queues(struct nvme_rdma_ctrl *ctrl,
 	}
 }
 
+static void nvme_rdma_stop_ctrl(struct nvme_ctrl *nctrl)
+{
+	struct nvme_rdma_ctrl *ctrl = to_rdma_ctrl(nctrl);
+
+	cancel_work_sync(&ctrl->err_work);
+	cancel_delayed_work_sync(&ctrl->reconnect_work);
+}
+
 static void nvme_rdma_free_ctrl(struct nvme_ctrl *nctrl)
 {
 	struct nvme_rdma_ctrl *ctrl = to_rdma_ctrl(nctrl);
@@ -2252,9 +2260,6 @@ static const struct blk_mq_ops nvme_rdma_admin_mq_ops = {
 
 static void nvme_rdma_shutdown_ctrl(struct nvme_rdma_ctrl *ctrl, bool shutdown)
 {
-	cancel_work_sync(&ctrl->err_work);
-	cancel_delayed_work_sync(&ctrl->reconnect_work);
-
 	nvme_rdma_teardown_io_queues(ctrl, shutdown);
 	nvme_stop_admin_queue(&ctrl->ctrl);
 	if (shutdown)
@@ -2304,6 +2309,7 @@ static const struct nvme_ctrl_ops nvme_rdma_ctrl_ops = {
 	.submit_async_event	= nvme_rdma_submit_async_event,
 	.delete_ctrl		= nvme_rdma_delete_ctrl,
 	.get_address		= nvmf_get_address,
+	.stop_ctrl		= nvme_rdma_stop_ctrl,
 };
 
 /*

drivers/nvme/host/tcp.c

@@ -1180,7 +1180,6 @@ static int nvme_tcp_try_send(struct nvme_tcp_queue *queue)
 	} else if (ret < 0) {
 		dev_err(queue->ctrl->ctrl.device,
 			"failed to send request %d\n", ret);
-		if (ret != -EPIPE && ret != -ECONNRESET)
 		nvme_tcp_fail_request(queue->request);
 		nvme_tcp_done_send_req(queue);
 	}
@@ -2194,9 +2193,6 @@ static void nvme_tcp_error_recovery_work(struct work_struct *work)
 
 static void nvme_tcp_teardown_ctrl(struct nvme_ctrl *ctrl, bool shutdown)
 {
-	cancel_work_sync(&to_tcp_ctrl(ctrl)->err_work);
-	cancel_delayed_work_sync(&to_tcp_ctrl(ctrl)->connect_work);
-
 	nvme_tcp_teardown_io_queues(ctrl, shutdown);
 	nvme_stop_admin_queue(ctrl);
 	if (shutdown)
@@ -2236,6 +2232,12 @@ static void nvme_reset_ctrl_work(struct work_struct *work)
 	nvme_tcp_reconnect_or_remove(ctrl);
 }
 
+static void nvme_tcp_stop_ctrl(struct nvme_ctrl *ctrl)
+{
+	cancel_work_sync(&to_tcp_ctrl(ctrl)->err_work);
+	cancel_delayed_work_sync(&to_tcp_ctrl(ctrl)->connect_work);
+}
+
 static void nvme_tcp_free_ctrl(struct nvme_ctrl *nctrl)
 {
 	struct nvme_tcp_ctrl *ctrl = to_tcp_ctrl(nctrl);
@@ -2557,6 +2559,7 @@ static const struct nvme_ctrl_ops nvme_tcp_ctrl_ops = {
 	.submit_async_event	= nvme_tcp_submit_async_event,
 	.delete_ctrl		= nvme_tcp_delete_ctrl,
 	.get_address		= nvmf_get_address,
+	.stop_ctrl		= nvme_tcp_stop_ctrl,
 };
 
 static bool

drivers/nvme/target/configfs.c

@@ -773,11 +773,31 @@ static ssize_t nvmet_passthru_io_timeout_store(struct config_item *item,
 }
 CONFIGFS_ATTR(nvmet_passthru_, io_timeout);
 
+static ssize_t nvmet_passthru_clear_ids_show(struct config_item *item,
+		char *page)
+{
+	return sprintf(page, "%u\n", to_subsys(item->ci_parent)->clear_ids);
+}
+
+static ssize_t nvmet_passthru_clear_ids_store(struct config_item *item,
+		const char *page, size_t count)
+{
+	struct nvmet_subsys *subsys = to_subsys(item->ci_parent);
+	unsigned int clear_ids;
+
+	if (kstrtouint(page, 0, &clear_ids))
+		return -EINVAL;
+	subsys->clear_ids = clear_ids;
+	return count;
+}
+CONFIGFS_ATTR(nvmet_passthru_, clear_ids);
+
 static struct configfs_attribute *nvmet_passthru_attrs[] = {
 	&nvmet_passthru_attr_device_path,
 	&nvmet_passthru_attr_enable,
 	&nvmet_passthru_attr_admin_timeout,
 	&nvmet_passthru_attr_io_timeout,
+	&nvmet_passthru_attr_clear_ids,
 	NULL,
 };
 

drivers/nvme/target/core.c

@@ -1374,6 +1374,12 @@ u16 nvmet_alloc_ctrl(const char *subsysnqn, const char *hostnqn,
 	ctrl->port = req->port;
 	ctrl->ops = req->ops;
 
+#ifdef CONFIG_NVME_TARGET_PASSTHRU
+	/* By default, set loop targets to clear IDS by default */
+	if (ctrl->port->disc_addr.trtype == NVMF_TRTYPE_LOOP)
+		subsys->clear_ids = 1;
+#endif
+
 	INIT_WORK(&ctrl->async_event_work, nvmet_async_event_work);
 	INIT_LIST_HEAD(&ctrl->async_events);
 	INIT_RADIX_TREE(&ctrl->p2p_ns_map, GFP_KERNEL);

drivers/nvme/target/nvmet.h

@@ -249,6 +249,7 @@ struct nvmet_subsys {
 	struct config_group	passthru_group;
 	unsigned int		admin_timeout;
 	unsigned int		io_timeout;
+	unsigned int		clear_ids;
 #endif /* CONFIG_NVME_TARGET_PASSTHRU */
 
 #ifdef CONFIG_BLK_DEV_ZONED

drivers/nvme/target/passthru.c

@@ -30,6 +30,53 @@ void nvmet_passthrough_override_cap(struct nvmet_ctrl *ctrl)
 		ctrl->cap &= ~(1ULL << 43);
 }
 
+static u16 nvmet_passthru_override_id_descs(struct nvmet_req *req)
+{
+	struct nvmet_ctrl *ctrl = req->sq->ctrl;
+	u16 status = NVME_SC_SUCCESS;
+	int pos, len;
+	bool csi_seen = false;
+	void *data;
+	u8 csi;
+
+	if (!ctrl->subsys->clear_ids)
+		return status;
+
+	data = kzalloc(NVME_IDENTIFY_DATA_SIZE, GFP_KERNEL);
+	if (!data)
+		return NVME_SC_INTERNAL;
+
+	status = nvmet_copy_from_sgl(req, 0, data, NVME_IDENTIFY_DATA_SIZE);
+	if (status)
+		goto out_free;
+
+	for (pos = 0; pos < NVME_IDENTIFY_DATA_SIZE; pos += len) {
+		struct nvme_ns_id_desc *cur = data + pos;
+
+		if (cur->nidl == 0)
+			break;
+		if (cur->nidt == NVME_NIDT_CSI) {
+			memcpy(&csi, cur + 1, NVME_NIDT_CSI_LEN);
+			csi_seen = true;
+			break;
+		}
+		len = sizeof(struct nvme_ns_id_desc) + cur->nidl;
+	}
+
+	memset(data, 0, NVME_IDENTIFY_DATA_SIZE);
+	if (csi_seen) {
+		struct nvme_ns_id_desc *cur = data;
+
+		cur->nidt = NVME_NIDT_CSI;
+		cur->nidl = NVME_NIDT_CSI_LEN;
+		memcpy(cur + 1, &csi, NVME_NIDT_CSI_LEN);
+	}
+	status = nvmet_copy_to_sgl(req, 0, data, NVME_IDENTIFY_DATA_SIZE);
+out_free:
+	kfree(data);
+	return status;
+}
+
 static u16 nvmet_passthru_override_id_ctrl(struct nvmet_req *req)
 {
 	struct nvmet_ctrl *ctrl = req->sq->ctrl;
@@ -152,6 +199,11 @@ static u16 nvmet_passthru_override_id_ns(struct nvmet_req *req)
 	 */
 	id->mc = 0;
 
+	if (req->sq->ctrl->subsys->clear_ids) {
+		memset(id->nguid, 0, NVME_NIDT_NGUID_LEN);
+		memset(id->eui64, 0, NVME_NIDT_EUI64_LEN);
+	}
+
 	status = nvmet_copy_to_sgl(req, 0, id, sizeof(*id));
 
 out_free:
@@ -176,6 +228,9 @@ static void nvmet_passthru_execute_cmd_work(struct work_struct *w)
 		case NVME_ID_CNS_NS:
 			nvmet_passthru_override_id_ns(req);
 			break;
+		case NVME_ID_CNS_NS_DESC_LIST:
+			nvmet_passthru_override_id_descs(req);
+			break;
 		}
 	} else if (status < 0)
 		status = NVME_SC_INTERNAL;

drivers/nvme/target/tcp.c

@@ -405,7 +405,7 @@ static int nvmet_tcp_map_data(struct nvmet_tcp_cmd *cmd)
 	return NVME_SC_INTERNAL;
 }
 
-static void nvmet_tcp_send_ddgst(struct ahash_request *hash,
+static void nvmet_tcp_calc_ddgst(struct ahash_request *hash,
 		struct nvmet_tcp_cmd *cmd)
 {
 	ahash_request_set_crypt(hash, cmd->req.sg,
@@ -413,23 +413,6 @@ static void nvmet_tcp_send_ddgst(struct ahash_request *hash,
 	crypto_ahash_digest(hash);
 }
 
-static void nvmet_tcp_recv_ddgst(struct ahash_request *hash,
-		struct nvmet_tcp_cmd *cmd)
-{
-	struct scatterlist sg;
-	struct kvec *iov;
-	int i;
-
-	crypto_ahash_init(hash);
-	for (i = 0, iov = cmd->iov; i < cmd->nr_mapped; i++, iov++) {
-		sg_init_one(&sg, iov->iov_base, iov->iov_len);
-		ahash_request_set_crypt(hash, &sg, NULL, iov->iov_len);
-		crypto_ahash_update(hash);
-	}
-	ahash_request_set_crypt(hash, NULL, (void *)&cmd->exp_ddgst, 0);
-	crypto_ahash_final(hash);
-}
-
 static void nvmet_setup_c2h_data_pdu(struct nvmet_tcp_cmd *cmd)
 {
 	struct nvme_tcp_data_pdu *pdu = cmd->data_pdu;
@@ -454,7 +437,7 @@ static void nvmet_setup_c2h_data_pdu(struct nvmet_tcp_cmd *cmd)
 
 	if (queue->data_digest) {
 		pdu->hdr.flags |= NVME_TCP_F_DDGST;
-		nvmet_tcp_send_ddgst(queue->snd_hash, cmd);
+		nvmet_tcp_calc_ddgst(queue->snd_hash, cmd);
 	}
 
 	if (cmd->queue->hdr_digest) {
@@ -1137,7 +1120,7 @@ static void nvmet_tcp_prep_recv_ddgst(struct nvmet_tcp_cmd *cmd)
 {
 	struct nvmet_tcp_queue *queue = cmd->queue;
 
-	nvmet_tcp_recv_ddgst(queue->rcv_hash, cmd);
+	nvmet_tcp_calc_ddgst(queue->rcv_hash, cmd);
 	queue->offset = 0;
 	queue->left = NVME_TCP_DIGEST_LENGTH;
 	queue->rcv_state = NVMET_TCP_RECV_DDGST;