From f70575805708cabdedea7498aaa3f710fde4d920 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Wed, 31 Jan 2024 03:29:01 +0000
Subject: [PATCH] add lvds1024*800
---
kernel/drivers/nvme/target/configfs.c | 633 ++++++++++++++++++++++++++++++++++++++++++++++-----------
1 files changed, 508 insertions(+), 125 deletions(-)
diff --git a/kernel/drivers/nvme/target/configfs.c b/kernel/drivers/nvme/target/configfs.c
index b37a8e3..9aed5cc 100644
--- a/kernel/drivers/nvme/target/configfs.c
+++ b/kernel/drivers/nvme/target/configfs.c
@@ -1,15 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* Configfs interface for the NVMe target.
* Copyright (c) 2015-2016 HGST, a Western Digital Company.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/kernel.h>
@@ -17,66 +9,82 @@
#include <linux/slab.h>
#include <linux/stat.h>
#include <linux/ctype.h>
+#include <linux/pci.h>
+#include <linux/pci-p2pdma.h>
#include "nvmet.h"
static const struct config_item_type nvmet_host_type;
static const struct config_item_type nvmet_subsys_type;
-static const struct nvmet_transport_name {
+static LIST_HEAD(nvmet_ports_list);
+struct list_head *nvmet_ports = &nvmet_ports_list;
+
+struct nvmet_type_name_map {
u8 type;
const char *name;
-} nvmet_transport_names[] = {
+};
+
+static struct nvmet_type_name_map nvmet_transport[] = {
{ NVMF_TRTYPE_RDMA, "rdma" },
{ NVMF_TRTYPE_FC, "fc" },
+ { NVMF_TRTYPE_TCP, "tcp" },
{ NVMF_TRTYPE_LOOP, "loop" },
};
+
+static const struct nvmet_type_name_map nvmet_addr_family[] = {
+ { NVMF_ADDR_FAMILY_PCI, "pcie" },
+ { NVMF_ADDR_FAMILY_IP4, "ipv4" },
+ { NVMF_ADDR_FAMILY_IP6, "ipv6" },
+ { NVMF_ADDR_FAMILY_IB, "ib" },
+ { NVMF_ADDR_FAMILY_FC, "fc" },
+ { NVMF_ADDR_FAMILY_LOOP, "loop" },
+};
+
+static bool nvmet_is_port_enabled(struct nvmet_port *p, const char *caller)
+{
+ if (p->enabled)
+ pr_err("Disable port '%u' before changing attribute in %s\n",
+ le16_to_cpu(p->disc_addr.portid), caller);
+ return p->enabled;
+}
/*
* nvmet_port Generic ConfigFS definitions.
* Used in any place in the ConfigFS tree that refers to an address.
*/
-static ssize_t nvmet_addr_adrfam_show(struct config_item *item,
- char *page)
+static ssize_t nvmet_addr_adrfam_show(struct config_item *item, char *page)
{
- switch (to_nvmet_port(item)->disc_addr.adrfam) {
- case NVMF_ADDR_FAMILY_IP4:
- return sprintf(page, "ipv4\n");
- case NVMF_ADDR_FAMILY_IP6:
- return sprintf(page, "ipv6\n");
- case NVMF_ADDR_FAMILY_IB:
- return sprintf(page, "ib\n");
- case NVMF_ADDR_FAMILY_FC:
- return sprintf(page, "fc\n");
- default:
- return sprintf(page, "\n");
+ u8 adrfam = to_nvmet_port(item)->disc_addr.adrfam;
+ int i;
+
+ for (i = 1; i < ARRAY_SIZE(nvmet_addr_family); i++) {
+ if (nvmet_addr_family[i].type == adrfam)
+ return sprintf(page, "%s\n", nvmet_addr_family[i].name);
}
+
+ return sprintf(page, "\n");
}
static ssize_t nvmet_addr_adrfam_store(struct config_item *item,
const char *page, size_t count)
{
struct nvmet_port *port = to_nvmet_port(item);
+ int i;
- if (port->enabled) {
- pr_err("Cannot modify address while enabled\n");
- pr_err("Disable the address before modifying\n");
+ if (nvmet_is_port_enabled(port, __func__))
return -EACCES;
+
+ for (i = 1; i < ARRAY_SIZE(nvmet_addr_family); i++) {
+ if (sysfs_streq(page, nvmet_addr_family[i].name))
+ goto found;
}
- if (sysfs_streq(page, "ipv4")) {
- port->disc_addr.adrfam = NVMF_ADDR_FAMILY_IP4;
- } else if (sysfs_streq(page, "ipv6")) {
- port->disc_addr.adrfam = NVMF_ADDR_FAMILY_IP6;
- } else if (sysfs_streq(page, "ib")) {
- port->disc_addr.adrfam = NVMF_ADDR_FAMILY_IB;
- } else if (sysfs_streq(page, "fc")) {
- port->disc_addr.adrfam = NVMF_ADDR_FAMILY_FC;
- } else {
- pr_err("Invalid value '%s' for adrfam\n", page);
- return -EINVAL;
- }
+ pr_err("Invalid value '%s' for adrfam\n", page);
+ return -EINVAL;
+found:
+ port->disc_addr.adrfam = nvmet_addr_family[i].type;
return count;
}
@@ -102,11 +110,9 @@
return -EINVAL;
}
- if (port->enabled) {
- pr_err("Cannot modify address while enabled\n");
- pr_err("Disable the address before modifying\n");
+ if (nvmet_is_port_enabled(port, __func__))
return -EACCES;
- }
+
port->disc_addr.portid = cpu_to_le16(portid);
return count;
}
@@ -132,11 +138,8 @@
return -EINVAL;
}
- if (port->enabled) {
- pr_err("Cannot modify address while enabled\n");
- pr_err("Disable the address before modifying\n");
+ if (nvmet_is_port_enabled(port, __func__))
return -EACCES;
- }
if (sscanf(page, "%s\n", port->disc_addr.traddr) != 1)
return -EINVAL;
@@ -145,43 +148,47 @@
CONFIGFS_ATTR(nvmet_, addr_traddr);
-static ssize_t nvmet_addr_treq_show(struct config_item *item,
- char *page)
+static const struct nvmet_type_name_map nvmet_addr_treq[] = {
+ { NVMF_TREQ_NOT_SPECIFIED, "not specified" },
+ { NVMF_TREQ_REQUIRED, "required" },
+ { NVMF_TREQ_NOT_REQUIRED, "not required" },
+};
+
+static ssize_t nvmet_addr_treq_show(struct config_item *item, char *page)
{
- switch (to_nvmet_port(item)->disc_addr.treq) {
- case NVMF_TREQ_NOT_SPECIFIED:
- return sprintf(page, "not specified\n");
- case NVMF_TREQ_REQUIRED:
- return sprintf(page, "required\n");
- case NVMF_TREQ_NOT_REQUIRED:
- return sprintf(page, "not required\n");
- default:
- return sprintf(page, "\n");
+ u8 treq = to_nvmet_port(item)->disc_addr.treq &
+ NVME_TREQ_SECURE_CHANNEL_MASK;
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(nvmet_addr_treq); i++) {
+ if (treq == nvmet_addr_treq[i].type)
+ return sprintf(page, "%s\n", nvmet_addr_treq[i].name);
}
+
+ return sprintf(page, "\n");
}
static ssize_t nvmet_addr_treq_store(struct config_item *item,
const char *page, size_t count)
{
struct nvmet_port *port = to_nvmet_port(item);
+ u8 treq = port->disc_addr.treq & ~NVME_TREQ_SECURE_CHANNEL_MASK;
+ int i;
- if (port->enabled) {
- pr_err("Cannot modify address while enabled\n");
- pr_err("Disable the address before modifying\n");
+ if (nvmet_is_port_enabled(port, __func__))
return -EACCES;
+
+ for (i = 0; i < ARRAY_SIZE(nvmet_addr_treq); i++) {
+ if (sysfs_streq(page, nvmet_addr_treq[i].name))
+ goto found;
}
- if (sysfs_streq(page, "not specified")) {
- port->disc_addr.treq = NVMF_TREQ_NOT_SPECIFIED;
- } else if (sysfs_streq(page, "required")) {
- port->disc_addr.treq = NVMF_TREQ_REQUIRED;
- } else if (sysfs_streq(page, "not required")) {
- port->disc_addr.treq = NVMF_TREQ_NOT_REQUIRED;
- } else {
- pr_err("Invalid value '%s' for treq\n", page);
- return -EINVAL;
- }
+ pr_err("Invalid value '%s' for treq\n", page);
+ return -EINVAL;
+found:
+ treq |= nvmet_addr_treq[i].type;
+ port->disc_addr.treq = treq;
return count;
}
@@ -205,11 +212,8 @@
pr_err("Invalid value '%s' for trsvcid\n", page);
return -EINVAL;
}
- if (port->enabled) {
- pr_err("Cannot modify address while enabled\n");
- pr_err("Disable the address before modifying\n");
+ if (nvmet_is_port_enabled(port, __func__))
return -EACCES;
- }
if (sscanf(page, "%s\n", port->disc_addr.trsvcid) != 1)
return -EINVAL;
@@ -232,11 +236,8 @@
struct nvmet_port *port = to_nvmet_port(item);
int ret;
- if (port->enabled) {
- pr_err("Cannot modify inline_data_size while port enabled\n");
- pr_err("Disable the port before modifying\n");
+ if (nvmet_is_port_enabled(port, __func__))
return -EACCES;
- }
ret = kstrtoint(page, 0, &port->inline_data_size);
if (ret) {
pr_err("Invalid value '%s' for inline_data_size\n", page);
@@ -247,16 +248,45 @@
CONFIGFS_ATTR(nvmet_, param_inline_data_size);
+#ifdef CONFIG_BLK_DEV_INTEGRITY
+static ssize_t nvmet_param_pi_enable_show(struct config_item *item,
+ char *page)
+{
+ struct nvmet_port *port = to_nvmet_port(item);
+
+ return snprintf(page, PAGE_SIZE, "%d\n", port->pi_enable);
+}
+
+static ssize_t nvmet_param_pi_enable_store(struct config_item *item,
+ const char *page, size_t count)
+{
+ struct nvmet_port *port = to_nvmet_port(item);
+ bool val;
+
+ if (strtobool(page, &val))
+ return -EINVAL;
+
+ if (port->enabled) {
+ pr_err("Disable port before setting pi_enable value.\n");
+ return -EACCES;
+ }
+
+ port->pi_enable = val;
+ return count;
+}
+
+CONFIGFS_ATTR(nvmet_, param_pi_enable);
+#endif
+
static ssize_t nvmet_addr_trtype_show(struct config_item *item,
char *page)
{
struct nvmet_port *port = to_nvmet_port(item);
int i;
- for (i = 0; i < ARRAY_SIZE(nvmet_transport_names); i++) {
- if (port->disc_addr.trtype != nvmet_transport_names[i].type)
- continue;
- return sprintf(page, "%s\n", nvmet_transport_names[i].name);
+ for (i = 0; i < ARRAY_SIZE(nvmet_transport); i++) {
+ if (port->disc_addr.trtype == nvmet_transport[i].type)
+ return sprintf(page, "%s\n", nvmet_transport[i].name);
}
return sprintf(page, "\n");
@@ -275,22 +305,20 @@
struct nvmet_port *port = to_nvmet_port(item);
int i;
- if (port->enabled) {
- pr_err("Cannot modify address while enabled\n");
- pr_err("Disable the address before modifying\n");
+ if (nvmet_is_port_enabled(port, __func__))
return -EACCES;
- }
- for (i = 0; i < ARRAY_SIZE(nvmet_transport_names); i++) {
- if (sysfs_streq(page, nvmet_transport_names[i].name))
+ for (i = 0; i < ARRAY_SIZE(nvmet_transport); i++) {
+ if (sysfs_streq(page, nvmet_transport[i].name))
goto found;
}
pr_err("Invalid value '%s' for trtype\n", page);
return -EINVAL;
+
found:
memset(&port->disc_addr.tsas, 0, NVMF_TSAS_SIZE);
- port->disc_addr.trtype = nvmet_transport_names[i].type;
+ port->disc_addr.trtype = nvmet_transport[i].type;
if (port->disc_addr.trtype == NVMF_TRTYPE_RDMA)
nvmet_port_init_tsas_rdma(port);
return count;
@@ -326,7 +354,7 @@
kfree(ns->device_path);
ret = -ENOMEM;
- ns->device_path = kstrndup(page, len, GFP_KERNEL);
+ ns->device_path = kmemdup_nul(page, len, GFP_KERNEL);
if (!ns->device_path)
goto out_unlock;
@@ -340,6 +368,48 @@
CONFIGFS_ATTR(nvmet_ns_, device_path);
+#ifdef CONFIG_PCI_P2PDMA
+static ssize_t nvmet_ns_p2pmem_show(struct config_item *item, char *page)
+{
+ struct nvmet_ns *ns = to_nvmet_ns(item);
+
+ return pci_p2pdma_enable_show(page, ns->p2p_dev, ns->use_p2pmem);
+}
+
+static ssize_t nvmet_ns_p2pmem_store(struct config_item *item,
+ const char *page, size_t count)
+{
+ struct nvmet_ns *ns = to_nvmet_ns(item);
+ struct pci_dev *p2p_dev = NULL;
+ bool use_p2pmem;
+ int ret = count;
+ int error;
+
+ mutex_lock(&ns->subsys->lock);
+ if (ns->enabled) {
+ ret = -EBUSY;
+ goto out_unlock;
+ }
+
+ error = pci_p2pdma_enable_store(page, &p2p_dev, &use_p2pmem);
+ if (error) {
+ ret = error;
+ goto out_unlock;
+ }
+
+ ns->use_p2pmem = use_p2pmem;
+ pci_dev_put(ns->p2p_dev);
+ ns->p2p_dev = p2p_dev;
+
+out_unlock:
+ mutex_unlock(&ns->subsys->lock);
+
+ return ret;
+}
+
+CONFIGFS_ATTR(nvmet_ns_, p2pmem);
+#endif /* CONFIG_PCI_P2PDMA */
+
static ssize_t nvmet_ns_device_uuid_show(struct config_item *item, char *page)
{
return sprintf(page, "%pUb\n", &to_nvmet_ns(item)->uuid);
@@ -352,13 +422,11 @@
struct nvmet_subsys *subsys = ns->subsys;
int ret = 0;
-
mutex_lock(&subsys->lock);
if (ns->enabled) {
ret = -EBUSY;
goto out_unlock;
}
-
if (uuid_parse(page, &ns->uuid))
ret = -EINVAL;
@@ -502,6 +570,31 @@
CONFIGFS_ATTR(nvmet_ns_, buffered_io);
+static ssize_t nvmet_ns_revalidate_size_store(struct config_item *item,
+ const char *page, size_t count)
+{
+ struct nvmet_ns *ns = to_nvmet_ns(item);
+ bool val;
+
+ if (strtobool(page, &val))
+ return -EINVAL;
+
+ if (!val)
+ return -EINVAL;
+
+ mutex_lock(&ns->subsys->lock);
+ if (!ns->enabled) {
+ pr_err("enable ns before revalidate.\n");
+ mutex_unlock(&ns->subsys->lock);
+ return -EINVAL;
+ }
+ nvmet_ns_revalidate(ns);
+ mutex_unlock(&ns->subsys->lock);
+ return count;
+}
+
+CONFIGFS_ATTR_WO(nvmet_ns_, revalidate_size);
+
static struct configfs_attribute *nvmet_ns_attrs[] = {
&nvmet_ns_attr_device_path,
&nvmet_ns_attr_device_nguid,
@@ -509,6 +602,10 @@
&nvmet_ns_attr_ana_grpid,
&nvmet_ns_attr_enable,
&nvmet_ns_attr_buffered_io,
+ &nvmet_ns_attr_revalidate_size,
+#ifdef CONFIG_PCI_P2PDMA
+ &nvmet_ns_attr_p2pmem,
+#endif
NULL,
};
@@ -542,8 +639,10 @@
goto out;
ret = -EINVAL;
- if (nsid == 0 || nsid == NVME_NSID_ALL)
+ if (nsid == 0 || nsid == NVME_NSID_ALL) {
+ pr_err("invalid nsid %#x", nsid);
goto out;
+ }
ret = -ENOMEM;
ns = nvmet_ns_alloc(subsys, nsid);
@@ -566,6 +665,103 @@
.ct_group_ops = &nvmet_namespaces_group_ops,
.ct_owner = THIS_MODULE,
};
+
+#ifdef CONFIG_NVME_TARGET_PASSTHRU
+
+static ssize_t nvmet_passthru_device_path_show(struct config_item *item,
+ char *page)
+{
+ struct nvmet_subsys *subsys = to_subsys(item->ci_parent);
+
+ return snprintf(page, PAGE_SIZE, "%s\n", subsys->passthru_ctrl_path);
+}
+
+static ssize_t nvmet_passthru_device_path_store(struct config_item *item,
+ const char *page, size_t count)
+{
+ struct nvmet_subsys *subsys = to_subsys(item->ci_parent);
+ size_t len;
+ int ret;
+
+ mutex_lock(&subsys->lock);
+
+ ret = -EBUSY;
+ if (subsys->passthru_ctrl)
+ goto out_unlock;
+
+ ret = -EINVAL;
+ len = strcspn(page, "\n");
+ if (!len)
+ goto out_unlock;
+
+ kfree(subsys->passthru_ctrl_path);
+ ret = -ENOMEM;
+ subsys->passthru_ctrl_path = kstrndup(page, len, GFP_KERNEL);
+ if (!subsys->passthru_ctrl_path)
+ goto out_unlock;
+
+ mutex_unlock(&subsys->lock);
+
+ return count;
+out_unlock:
+ mutex_unlock(&subsys->lock);
+ return ret;
+}
+CONFIGFS_ATTR(nvmet_passthru_, device_path);
+
+static ssize_t nvmet_passthru_enable_show(struct config_item *item,
+ char *page)
+{
+ struct nvmet_subsys *subsys = to_subsys(item->ci_parent);
+
+ return sprintf(page, "%d\n", subsys->passthru_ctrl ? 1 : 0);
+}
+
+static ssize_t nvmet_passthru_enable_store(struct config_item *item,
+ const char *page, size_t count)
+{
+ struct nvmet_subsys *subsys = to_subsys(item->ci_parent);
+ bool enable;
+ int ret = 0;
+
+ if (strtobool(page, &enable))
+ return -EINVAL;
+
+ if (enable)
+ ret = nvmet_passthru_ctrl_enable(subsys);
+ else
+ nvmet_passthru_ctrl_disable(subsys);
+
+ return ret ? ret : count;
+}
+CONFIGFS_ATTR(nvmet_passthru_, enable);
+
+static struct configfs_attribute *nvmet_passthru_attrs[] = {
+ &nvmet_passthru_attr_device_path,
+ &nvmet_passthru_attr_enable,
+ NULL,
+};
+
+static const struct config_item_type nvmet_passthru_type = {
+ .ct_attrs = nvmet_passthru_attrs,
+ .ct_owner = THIS_MODULE,
+};
+
+static void nvmet_add_passthru_group(struct nvmet_subsys *subsys)
+{
+ config_group_init_type_name(&subsys->passthru_group,
+ "passthru", &nvmet_passthru_type);
+ configfs_add_default_group(&subsys->passthru_group,
+ &subsys->group);
+}
+
+#else /* CONFIG_NVME_TARGET_PASSTHRU */
+
+static void nvmet_add_passthru_group(struct nvmet_subsys *subsys)
+{
+}
+
+#endif /* CONFIG_NVME_TARGET_PASSTHRU */
static int nvmet_port_subsys_allow_link(struct config_item *parent,
struct config_item *target)
@@ -599,7 +795,8 @@
}
list_add_tail(&link->entry, &port->subsystems);
- nvmet_genctr++;
+ nvmet_port_disc_changed(port, subsys);
+
up_write(&nvmet_config_sem);
return 0;
@@ -626,7 +823,9 @@
found:
list_del(&p->entry);
- nvmet_genctr++;
+ nvmet_port_del_ctrls(port, subsys);
+ nvmet_port_disc_changed(port, subsys);
+
if (list_empty(&port->subsystems))
nvmet_disable_port(port);
up_write(&nvmet_config_sem);
@@ -675,7 +874,8 @@
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:
@@ -701,7 +901,8 @@
found:
list_del(&p->entry);
- nvmet_genctr++;
+ nvmet_subsys_disc_changed(subsys, host);
+
up_write(&nvmet_config_sem);
kfree(p);
}
@@ -740,7 +941,11 @@
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;
@@ -754,14 +959,14 @@
struct nvmet_subsys *subsys = to_subsys(item);
if (NVME_TERTIARY(subsys->ver))
- return snprintf(page, PAGE_SIZE, "%d.%d.%d\n",
- (int)NVME_MAJOR(subsys->ver),
- (int)NVME_MINOR(subsys->ver),
- (int)NVME_TERTIARY(subsys->ver));
- else
- return snprintf(page, PAGE_SIZE, "%d.%d\n",
- (int)NVME_MAJOR(subsys->ver),
- (int)NVME_MINOR(subsys->ver));
+ return snprintf(page, PAGE_SIZE, "%llu.%llu.%llu\n",
+ NVME_MAJOR(subsys->ver),
+ NVME_MINOR(subsys->ver),
+ NVME_TERTIARY(subsys->ver));
+
+ return snprintf(page, PAGE_SIZE, "%llu.%llu\n",
+ NVME_MAJOR(subsys->ver),
+ NVME_MINOR(subsys->ver));
}
static ssize_t nvmet_subsys_attr_version_store(struct config_item *item,
@@ -771,6 +976,9 @@
int major, minor, tertiary = 0;
int ret;
+ /* passthru subsystems use the underlying controller's version */
+ if (nvmet_passthru_ctrl(subsys))
+ return -EINVAL;
ret = sscanf(page, "%d.%d.%d\n", &major, &minor, &tertiary);
if (ret != 2 && ret != 3)
@@ -795,20 +1003,177 @@
static ssize_t nvmet_subsys_attr_serial_store(struct config_item *item,
const char *page, size_t count)
{
- struct nvmet_subsys *subsys = to_subsys(item);
+ u64 serial;
+
+ if (sscanf(page, "%llx\n", &serial) != 1)
+ return -EINVAL;
down_write(&nvmet_config_sem);
- sscanf(page, "%llx\n", &subsys->serial);
+ to_subsys(item)->serial = serial;
up_write(&nvmet_config_sem);
return count;
}
CONFIGFS_ATTR(nvmet_subsys_, attr_serial);
+static ssize_t nvmet_subsys_attr_cntlid_min_show(struct config_item *item,
+ char *page)
+{
+ return snprintf(page, PAGE_SIZE, "%u\n", to_subsys(item)->cntlid_min);
+}
+
+static ssize_t nvmet_subsys_attr_cntlid_min_store(struct config_item *item,
+ const char *page, size_t cnt)
+{
+ u16 cntlid_min;
+
+ if (sscanf(page, "%hu\n", &cntlid_min) != 1)
+ return -EINVAL;
+
+ if (cntlid_min == 0)
+ return -EINVAL;
+
+ down_write(&nvmet_config_sem);
+ if (cntlid_min >= to_subsys(item)->cntlid_max)
+ goto out_unlock;
+ to_subsys(item)->cntlid_min = cntlid_min;
+ up_write(&nvmet_config_sem);
+ return cnt;
+
+out_unlock:
+ up_write(&nvmet_config_sem);
+ return -EINVAL;
+}
+CONFIGFS_ATTR(nvmet_subsys_, attr_cntlid_min);
+
+static ssize_t nvmet_subsys_attr_cntlid_max_show(struct config_item *item,
+ char *page)
+{
+ return snprintf(page, PAGE_SIZE, "%u\n", to_subsys(item)->cntlid_max);
+}
+
+static ssize_t nvmet_subsys_attr_cntlid_max_store(struct config_item *item,
+ const char *page, size_t cnt)
+{
+ u16 cntlid_max;
+
+ if (sscanf(page, "%hu\n", &cntlid_max) != 1)
+ return -EINVAL;
+
+ if (cntlid_max == 0)
+ return -EINVAL;
+
+ down_write(&nvmet_config_sem);
+ if (cntlid_max <= to_subsys(item)->cntlid_min)
+ goto out_unlock;
+ to_subsys(item)->cntlid_max = cntlid_max;
+ up_write(&nvmet_config_sem);
+ return cnt;
+
+out_unlock:
+ up_write(&nvmet_config_sem);
+ return -EINVAL;
+}
+CONFIGFS_ATTR(nvmet_subsys_, attr_cntlid_max);
+
+static ssize_t nvmet_subsys_attr_model_show(struct config_item *item,
+ char *page)
+{
+ struct nvmet_subsys *subsys = to_subsys(item);
+ struct nvmet_subsys_model *subsys_model;
+ char *model = NVMET_DEFAULT_CTRL_MODEL;
+ int ret;
+
+ rcu_read_lock();
+ subsys_model = rcu_dereference(subsys->model);
+ if (subsys_model)
+ model = subsys_model->number;
+ ret = snprintf(page, PAGE_SIZE, "%s\n", model);
+ rcu_read_unlock();
+
+ return ret;
+}
+
+/* See Section 1.5 of NVMe 1.4 */
+static bool nvmet_is_ascii(const char c)
+{
+ return c >= 0x20 && c <= 0x7e;
+}
+
+static ssize_t nvmet_subsys_attr_model_store(struct config_item *item,
+ const char *page, size_t count)
+{
+ struct nvmet_subsys *subsys = to_subsys(item);
+ struct nvmet_subsys_model *new_model;
+ char *new_model_number;
+ int pos = 0, len;
+
+ len = strcspn(page, "\n");
+ if (!len)
+ return -EINVAL;
+
+ for (pos = 0; pos < len; pos++) {
+ if (!nvmet_is_ascii(page[pos]))
+ return -EINVAL;
+ }
+
+ new_model_number = kmemdup_nul(page, len, GFP_KERNEL);
+ if (!new_model_number)
+ return -ENOMEM;
+
+ new_model = kzalloc(sizeof(*new_model) + len + 1, GFP_KERNEL);
+ if (!new_model) {
+ kfree(new_model_number);
+ return -ENOMEM;
+ }
+ memcpy(new_model->number, new_model_number, len);
+
+ down_write(&nvmet_config_sem);
+ mutex_lock(&subsys->lock);
+ new_model = rcu_replace_pointer(subsys->model, new_model,
+ mutex_is_locked(&subsys->lock));
+ mutex_unlock(&subsys->lock);
+ up_write(&nvmet_config_sem);
+
+ kfree_rcu(new_model, rcuhead);
+ kfree(new_model_number);
+
+ return count;
+}
+CONFIGFS_ATTR(nvmet_subsys_, attr_model);
+
+#ifdef CONFIG_BLK_DEV_INTEGRITY
+static ssize_t nvmet_subsys_attr_pi_enable_show(struct config_item *item,
+ char *page)
+{
+ return snprintf(page, PAGE_SIZE, "%d\n", to_subsys(item)->pi_support);
+}
+
+static ssize_t nvmet_subsys_attr_pi_enable_store(struct config_item *item,
+ const char *page, size_t count)
+{
+ struct nvmet_subsys *subsys = to_subsys(item);
+ bool pi_enable;
+
+ if (strtobool(page, &pi_enable))
+ return -EINVAL;
+
+ subsys->pi_support = pi_enable;
+ return count;
+}
+CONFIGFS_ATTR(nvmet_subsys_, attr_pi_enable);
+#endif
+
static struct configfs_attribute *nvmet_subsys_attrs[] = {
&nvmet_subsys_attr_attr_allow_any_host,
&nvmet_subsys_attr_attr_version,
&nvmet_subsys_attr_attr_serial,
+ &nvmet_subsys_attr_attr_cntlid_min,
+ &nvmet_subsys_attr_attr_cntlid_max,
+ &nvmet_subsys_attr_attr_model,
+#ifdef CONFIG_BLK_DEV_INTEGRITY
+ &nvmet_subsys_attr_attr_pi_enable,
+#endif
NULL,
};
@@ -844,8 +1209,8 @@
}
subsys = nvmet_subsys_alloc(name, NVME_NQN_NVME);
- if (!subsys)
- return ERR_PTR(-ENOMEM);
+ if (IS_ERR(subsys))
+ return ERR_CAST(subsys);
config_group_init_type_name(&subsys->group, name, &nvmet_subsys_type);
@@ -857,6 +1222,8 @@
"allowed_hosts", &nvmet_allowed_hosts_type);
configfs_add_default_group(&subsys->allowed_hosts_group,
&subsys->group);
+
+ nvmet_add_passthru_group(subsys);
return &subsys->group;
}
@@ -889,7 +1256,7 @@
if (enable)
nvmet_referral_enable(parent, port);
else
- nvmet_referral_disable(port);
+ nvmet_referral_disable(parent, port);
return count;
inval:
@@ -913,11 +1280,19 @@
NULL,
};
+static void nvmet_referral_notify(struct config_group *group,
+ 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(parent, port);
+}
+
static void nvmet_referral_release(struct config_item *item)
{
struct nvmet_port *port = to_nvmet_port(item);
- nvmet_referral_disable(port);
kfree(port);
}
@@ -948,6 +1323,7 @@
static struct configfs_group_operations nvmet_referral_group_ops = {
.make_group = nvmet_referral_make,
+ .disconnect_notify = nvmet_referral_notify,
};
static const struct config_item_type nvmet_referrals_type = {
@@ -955,10 +1331,7 @@
.ct_group_ops = &nvmet_referral_group_ops,
};
-static struct {
- enum nvme_ana_state state;
- const char *name;
-} nvmet_ana_state_names[] = {
+static struct nvmet_type_name_map nvmet_ana_state[] = {
{ NVME_ANA_OPTIMIZED, "optimized" },
{ NVME_ANA_NONOPTIMIZED, "non-optimized" },
{ NVME_ANA_INACCESSIBLE, "inaccessible" },
@@ -973,10 +1346,9 @@
enum nvme_ana_state state = grp->port->ana_state[grp->grpid];
int i;
- for (i = 0; i < ARRAY_SIZE(nvmet_ana_state_names); i++) {
- if (state != nvmet_ana_state_names[i].state)
- continue;
- return sprintf(page, "%s\n", nvmet_ana_state_names[i].name);
+ for (i = 0; i < ARRAY_SIZE(nvmet_ana_state); i++) {
+ if (state == nvmet_ana_state[i].type)
+ return sprintf(page, "%s\n", nvmet_ana_state[i].name);
}
return sprintf(page, "\n");
@@ -986,10 +1358,11 @@
const char *page, size_t count)
{
struct nvmet_ana_group *grp = to_ana_group(item);
+ enum nvme_ana_state *ana_state = grp->port->ana_state;
int i;
- for (i = 0; i < ARRAY_SIZE(nvmet_ana_state_names); i++) {
- if (sysfs_streq(page, nvmet_ana_state_names[i].name))
+ for (i = 0; i < ARRAY_SIZE(nvmet_ana_state); i++) {
+ if (sysfs_streq(page, nvmet_ana_state[i].name))
goto found;
}
@@ -998,10 +1371,9 @@
found:
down_write(&nvmet_ana_sem);
- grp->port->ana_state[grp->grpid] = nvmet_ana_state_names[i].state;
+ ana_state[grp->grpid] = (enum nvme_ana_state) nvmet_ana_state[i].type;
nvmet_ana_chgcnt++;
up_write(&nvmet_ana_sem);
-
nvmet_port_send_ana_event(grp->port);
return count;
}
@@ -1090,6 +1462,10 @@
{
struct nvmet_port *port = to_nvmet_port(item);
+ /* Let inflight controllers teardown complete */
+ flush_scheduled_work();
+ list_del(&port->global_entry);
+
kfree(port->ana_state);
kfree(port);
}
@@ -1101,6 +1477,9 @@
&nvmet_attr_addr_trsvcid,
&nvmet_attr_addr_trtype,
&nvmet_attr_param_inline_data_size,
+#ifdef CONFIG_BLK_DEV_INTEGRITY
+ &nvmet_attr_param_pi_enable,
+#endif
NULL,
};
@@ -1142,12 +1521,16 @@
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);
port->inline_data_size = -1; /* < 0 == let the transport choose */
port->disc_addr.portid = cpu_to_le16(portid);
+ port->disc_addr.adrfam = NVMF_ADDR_FAMILY_MAX;
+ port->disc_addr.treq = NVMF_TREQ_DISABLE_SQFLOW;
config_group_init_type_name(&port->group, name, &nvmet_port_type);
config_group_init_type_name(&port->subsys_group,
--
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