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nvme updates for Linux 6.5

Browse Source 
- Various cleanups all around (Irvin, Chaitanya, Christophe)
  - Better struct packing (Christophe JAILLET)
  - Reduce controller error logs for optional commands (Keith)
  - Support for >=64KiB block sizes (Daniel Gomez)
  - Fabrics fixes and code organization (Max, Chaitanya, Daniel Wagner)
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Merge tag 'nvme-6.5-2023-06-16' of git://git.infradead.org/nvme into for-6.5/block

Pull NVMe updates from Keith:

"nvme updates for Linux 6.5

 - Various cleanups all around (Irvin, Chaitanya, Christophe)
 - Better struct packing (Christophe JAILLET)
 - Reduce controller error logs for optional commands (Keith)
 - Support for >=64KiB block sizes (Daniel Gomez)
 - Fabrics fixes and code organization (Max, Chaitanya, Daniel Wagner)"

* tag 'nvme-6.5-2023-06-16' of git://git.infradead.org/nvme: (27 commits)
  nvme: forward port sysfs delete fix
  nvme: skip optional id ctrl csi if it failed
  nvme-core: use nvme_ns_head_multipath instead of ns->head->disk
  nvmet-fcloop: Do not wait on completion when unregister fails
  nvme-fabrics: open code __nvmf_host_find()
  nvme-fabrics: error out to unlock the mutex
  nvme: Increase block size variable size to 32-bit
  nvme-fcloop: no need to return from void function
  nvmet-auth: remove unnecessary break after goto
  nvmet-auth: remove some dead code
  nvme-core: remove redundant check from nvme_init_ns_head
  nvme: move sysfs code to a dedicated sysfs.c file
  nvme-fabrics: prevent overriding of existing host
  nvme-fabrics: check hostid using uuid_equal
  nvme-fabrics: unify common code in admin and io queue connect
  nvmet: reorder fields in 'struct nvmefc_fcp_req'
  nvmet: reorder fields in 'struct nvme_dhchap_queue_context'
  nvmet: reorder fields in 'struct nvmf_ctrl_options'
  nvme: reorder fields in 'struct nvme_ctrl'
  nvmet: reorder fields in 'struct nvmet_sq'
  ...
This commit is contained in:
Jens Axboe 2023-06-16 09:57:40 -06:00
commit 236f255296
14 changed files with 902 additions and 914 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/nvme/host/Makefile
View File

@ -10,7 +10,7 @@ obj-$(CONFIG_NVME_FC) += nvme-fc.o
obj-$(CONFIG_NVME_TCP) += nvme-tcp.o obj-$(CONFIG_NVME_TCP) += nvme-tcp.o
obj-$(CONFIG_NVME_APPLE) += nvme-apple.o obj-$(CONFIG_NVME_APPLE) += nvme-apple.o
nvme-core-y += core.o ioctl.o nvme-core-y += core.o ioctl.o sysfs.o
nvme-core-$(CONFIG_NVME_VERBOSE_ERRORS) += constants.o nvme-core-$(CONFIG_NVME_VERBOSE_ERRORS) += constants.o
nvme-core-$(CONFIG_TRACING) += trace.o nvme-core-$(CONFIG_TRACING) += trace.o
nvme-core-$(CONFIG_NVME_MULTIPATH) += multipath.o nvme-core-$(CONFIG_NVME_MULTIPATH) += multipath.o

6
drivers/nvme/host/auth.c
View File

@ -30,18 +30,18 @@ struct nvme_dhchap_queue_context {
u32 s2; u32 s2;
u16 transaction; u16 transaction;
u8 status; u8 status;
u8 dhgroup_id;
u8 hash_id; u8 hash_id;
size_t hash_len; size_t hash_len;
u8 dhgroup_id;
u8 c1[64]; u8 c1[64];
u8 c2[64]; u8 c2[64];
u8 response[64]; u8 response[64];
u8 *host_response; u8 *host_response;
u8 *ctrl_key; u8 *ctrl_key;
int ctrl_key_len;
u8 *host_key; u8 *host_key;
int host_key_len;
u8 *sess_key; u8 *sess_key;
int ctrl_key_len;
int host_key_len;
int sess_key_len; int sess_key_len;
}; };

663
drivers/nvme/host/core.c
View File

@ -237,7 +237,7 @@ int nvme_delete_ctrl(struct nvme_ctrl *ctrl)
} }
EXPORT_SYMBOL_GPL(nvme_delete_ctrl); EXPORT_SYMBOL_GPL(nvme_delete_ctrl);
static void nvme_delete_ctrl_sync(struct nvme_ctrl *ctrl) void nvme_delete_ctrl_sync(struct nvme_ctrl *ctrl)
{ {
/* /*
* Keep a reference until nvme_do_delete_ctrl() complete, * Keep a reference until nvme_do_delete_ctrl() complete,
@ -1835,7 +1835,7 @@ static void nvme_update_disk_info(struct gendisk *disk,
struct nvme_ns *ns, struct nvme_id_ns *id) struct nvme_ns *ns, struct nvme_id_ns *id)
{ {
sector_t capacity = nvme_lba_to_sect(ns, le64_to_cpu(id->nsze)); sector_t capacity = nvme_lba_to_sect(ns, le64_to_cpu(id->nsze));
unsigned short bs = 1 << ns->lba_shift; u32 bs = 1U << ns->lba_shift;
u32 atomic_bs, phys_bs, io_opt = 0; u32 atomic_bs, phys_bs, io_opt = 0;
/* /*
@ -2256,7 +2256,7 @@ static int nvme_report_zones(struct gendisk *disk, sector_t sector,
#define nvme_report_zones NULL #define nvme_report_zones NULL
#endif /* CONFIG_BLK_DEV_ZONED */ #endif /* CONFIG_BLK_DEV_ZONED */
static const struct block_device_operations nvme_bdev_ops = { const struct block_device_operations nvme_bdev_ops = {
.owner = THIS_MODULE, .owner = THIS_MODULE,
.ioctl = nvme_ioctl, .ioctl = nvme_ioctl,
.compat_ioctl = blkdev_compat_ptr_ioctl, .compat_ioctl = blkdev_compat_ptr_ioctl,
@ -2791,75 +2791,6 @@ static struct nvme_subsystem *__nvme_find_get_subsystem(const char *subsysnqn)
return NULL; return NULL;
} }
#define SUBSYS_ATTR_RO(_name, _mode, _show) \
struct device_attribute subsys_attr_##_name = \
__ATTR(_name, _mode, _show, NULL)
static ssize_t nvme_subsys_show_nqn(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct nvme_subsystem *subsys =
container_of(dev, struct nvme_subsystem, dev);
return sysfs_emit(buf, "%s\n", subsys->subnqn);
}
static SUBSYS_ATTR_RO(subsysnqn, S_IRUGO, nvme_subsys_show_nqn);
static ssize_t nvme_subsys_show_type(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct nvme_subsystem *subsys =
container_of(dev, struct nvme_subsystem, dev);
switch (subsys->subtype) {
case NVME_NQN_DISC:
return sysfs_emit(buf, "discovery\n");
case NVME_NQN_NVME:
return sysfs_emit(buf, "nvm\n");
default:
return sysfs_emit(buf, "reserved\n");
}
}
static SUBSYS_ATTR_RO(subsystype, S_IRUGO, nvme_subsys_show_type);
#define nvme_subsys_show_str_function(field) \
static ssize_t subsys_##field##_show(struct device *dev, \
struct device_attribute *attr, char *buf) \
{ \
struct nvme_subsystem *subsys = \
container_of(dev, struct nvme_subsystem, dev); \
return sysfs_emit(buf, "%.*s\n", \
(int)sizeof(subsys->field), subsys->field); \
} \
static SUBSYS_ATTR_RO(field, S_IRUGO, subsys_##field##_show);
nvme_subsys_show_str_function(model);
nvme_subsys_show_str_function(serial);
nvme_subsys_show_str_function(firmware_rev);
static struct attribute *nvme_subsys_attrs[] = {
&subsys_attr_model.attr,
&subsys_attr_serial.attr,
&subsys_attr_firmware_rev.attr,
&subsys_attr_subsysnqn.attr,
&subsys_attr_subsystype.attr,
#ifdef CONFIG_NVME_MULTIPATH
&subsys_attr_iopolicy.attr,
#endif
NULL,
};
static const struct attribute_group nvme_subsys_attrs_group = {
.attrs = nvme_subsys_attrs,
};
static const struct attribute_group *nvme_subsys_attrs_groups[] = {
&nvme_subsys_attrs_group,
NULL,
};
static inline bool nvme_discovery_ctrl(struct nvme_ctrl *ctrl) static inline bool nvme_discovery_ctrl(struct nvme_ctrl *ctrl)
{ {
return ctrl->opts && ctrl->opts->discovery_nqn; return ctrl->opts && ctrl->opts->discovery_nqn;
@ -3064,7 +2995,8 @@ static int nvme_init_non_mdts_limits(struct nvme_ctrl *ctrl)
ctrl->max_zeroes_sectors = 0; ctrl->max_zeroes_sectors = 0;
if (ctrl->subsys->subtype != NVME_NQN_NVME || if (ctrl->subsys->subtype != NVME_NQN_NVME ||
nvme_ctrl_limited_cns(ctrl)) nvme_ctrl_limited_cns(ctrl) ||
test_bit(NVME_CTRL_SKIP_ID_CNS_CS, &ctrl->flags))
return 0; return 0;
id = kzalloc(sizeof(*id), GFP_KERNEL); id = kzalloc(sizeof(*id), GFP_KERNEL);
@ -3086,6 +3018,8 @@ static int nvme_init_non_mdts_limits(struct nvme_ctrl *ctrl)
ctrl->max_zeroes_sectors = nvme_mps_to_sectors(ctrl, id->wzsl); ctrl->max_zeroes_sectors = nvme_mps_to_sectors(ctrl, id->wzsl);
free_data: free_data:
if (ret > 0)
set_bit(NVME_CTRL_SKIP_ID_CNS_CS, &ctrl->flags);
kfree(id); kfree(id);
return ret; return ret;
} }
@ -3393,583 +3327,6 @@ static const struct file_operations nvme_dev_fops = {
.uring_cmd = nvme_dev_uring_cmd, .uring_cmd = nvme_dev_uring_cmd,
}; };
static ssize_t nvme_sysfs_reset(struct device *dev,
struct device_attribute *attr, const char *buf,
size_t count)
{
struct nvme_ctrl *ctrl = dev_get_drvdata(dev);
int ret;
ret = nvme_reset_ctrl_sync(ctrl);
if (ret < 0)
return ret;
return count;
}
static DEVICE_ATTR(reset_controller, S_IWUSR, NULL, nvme_sysfs_reset);
static ssize_t nvme_sysfs_rescan(struct device *dev,
struct device_attribute *attr, const char *buf,
size_t count)
{
struct nvme_ctrl *ctrl = dev_get_drvdata(dev);
nvme_queue_scan(ctrl);
return count;
}
static DEVICE_ATTR(rescan_controller, S_IWUSR, NULL, nvme_sysfs_rescan);
static inline struct nvme_ns_head *dev_to_ns_head(struct device *dev)
{
struct gendisk *disk = dev_to_disk(dev);
if (disk->fops == &nvme_bdev_ops)
return nvme_get_ns_from_dev(dev)->head;
else
return disk->private_data;
}
static ssize_t wwid_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct nvme_ns_head *head = dev_to_ns_head(dev);
struct nvme_ns_ids *ids = &head->ids;
struct nvme_subsystem *subsys = head->subsys;
int serial_len = sizeof(subsys->serial);
int model_len = sizeof(subsys->model);
if (!uuid_is_null(&ids->uuid))
return sysfs_emit(buf, "uuid.%pU\n", &ids->uuid);
if (memchr_inv(ids->nguid, 0, sizeof(ids->nguid)))
return sysfs_emit(buf, "eui.%16phN\n", ids->nguid);
if (memchr_inv(ids->eui64, 0, sizeof(ids->eui64)))
return sysfs_emit(buf, "eui.%8phN\n", ids->eui64);
while (serial_len > 0 && (subsys->serial[serial_len - 1] == ' ' ||
subsys->serial[serial_len - 1] == '\0'))
serial_len--;
while (model_len > 0 && (subsys->model[model_len - 1] == ' ' ||
subsys->model[model_len - 1] == '\0'))
model_len--;
return sysfs_emit(buf, "nvme.%04x-%*phN-%*phN-%08x\n", subsys->vendor_id,
serial_len, subsys->serial, model_len, subsys->model,
head->ns_id);
}
static DEVICE_ATTR_RO(wwid);
static ssize_t nguid_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
return sysfs_emit(buf, "%pU\n", dev_to_ns_head(dev)->ids.nguid);
}
static DEVICE_ATTR_RO(nguid);
static ssize_t uuid_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct nvme_ns_ids *ids = &dev_to_ns_head(dev)->ids;
/* For backward compatibility expose the NGUID to userspace if
* we have no UUID set
*/
if (uuid_is_null(&ids->uuid)) {
dev_warn_ratelimited(dev,
"No UUID available providing old NGUID\n");
return sysfs_emit(buf, "%pU\n", ids->nguid);
}
return sysfs_emit(buf, "%pU\n", &ids->uuid);
}
static DEVICE_ATTR_RO(uuid);
static ssize_t eui_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
return sysfs_emit(buf, "%8ph\n", dev_to_ns_head(dev)->ids.eui64);
}
static DEVICE_ATTR_RO(eui);
static ssize_t nsid_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
return sysfs_emit(buf, "%d\n", dev_to_ns_head(dev)->ns_id);
}
static DEVICE_ATTR_RO(nsid);
static struct attribute *nvme_ns_id_attrs[] = {
&dev_attr_wwid.attr,
&dev_attr_uuid.attr,
&dev_attr_nguid.attr,
&dev_attr_eui.attr,
&dev_attr_nsid.attr,
#ifdef CONFIG_NVME_MULTIPATH
&dev_attr_ana_grpid.attr,
&dev_attr_ana_state.attr,
#endif
NULL,
};
static umode_t nvme_ns_id_attrs_are_visible(struct kobject *kobj,
struct attribute *a, int n)
{
struct device *dev = container_of(kobj, struct device, kobj);
struct nvme_ns_ids *ids = &dev_to_ns_head(dev)->ids;
if (a == &dev_attr_uuid.attr) {
if (uuid_is_null(&ids->uuid) &&
!memchr_inv(ids->nguid, 0, sizeof(ids->nguid)))
return 0;
}
if (a == &dev_attr_nguid.attr) {
if (!memchr_inv(ids->nguid, 0, sizeof(ids->nguid)))
return 0;
}
if (a == &dev_attr_eui.attr) {
if (!memchr_inv(ids->eui64, 0, sizeof(ids->eui64)))
return 0;
}
#ifdef CONFIG_NVME_MULTIPATH
if (a == &dev_attr_ana_grpid.attr || a == &dev_attr_ana_state.attr) {
if (dev_to_disk(dev)->fops != &nvme_bdev_ops) /* per-path attr */
return 0;
if (!nvme_ctrl_use_ana(nvme_get_ns_from_dev(dev)->ctrl))
return 0;
}
#endif
return a->mode;
}
static const struct attribute_group nvme_ns_id_attr_group = {
.attrs = nvme_ns_id_attrs,
.is_visible = nvme_ns_id_attrs_are_visible,
};
const struct attribute_group *nvme_ns_id_attr_groups[] = {
&nvme_ns_id_attr_group,
NULL,
};
#define nvme_show_str_function(field) \
static ssize_t field##_show(struct device *dev, \
struct device_attribute *attr, char *buf) \
{ \
struct nvme_ctrl *ctrl = dev_get_drvdata(dev); \
return sysfs_emit(buf, "%.*s\n", \
(int)sizeof(ctrl->subsys->field), ctrl->subsys->field); \
} \
static DEVICE_ATTR(field, S_IRUGO, field##_show, NULL);
nvme_show_str_function(model);
nvme_show_str_function(serial);
nvme_show_str_function(firmware_rev);
#define nvme_show_int_function(field) \
static ssize_t field##_show(struct device *dev, \
struct device_attribute *attr, char *buf) \
{ \
struct nvme_ctrl *ctrl = dev_get_drvdata(dev); \
return sysfs_emit(buf, "%d\n", ctrl->field); \
} \
static DEVICE_ATTR(field, S_IRUGO, field##_show, NULL);
nvme_show_int_function(cntlid);
nvme_show_int_function(numa_node);
nvme_show_int_function(queue_count);
nvme_show_int_function(sqsize);
nvme_show_int_function(kato);
static ssize_t nvme_sysfs_delete(struct device *dev,
struct device_attribute *attr, const char *buf,
size_t count)
{
struct nvme_ctrl *ctrl = dev_get_drvdata(dev);
if (device_remove_file_self(dev, attr))
nvme_delete_ctrl_sync(ctrl);
return count;
}
static DEVICE_ATTR(delete_controller, S_IWUSR, NULL, nvme_sysfs_delete);
static ssize_t nvme_sysfs_show_transport(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct nvme_ctrl *ctrl = dev_get_drvdata(dev);
return sysfs_emit(buf, "%s\n", ctrl->ops->name);
}
static DEVICE_ATTR(transport, S_IRUGO, nvme_sysfs_show_transport, NULL);
static ssize_t nvme_sysfs_show_state(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct nvme_ctrl *ctrl = dev_get_drvdata(dev);
static const char *const state_name[] = {
[NVME_CTRL_NEW] = "new",
[NVME_CTRL_LIVE] = "live",
[NVME_CTRL_RESETTING] = "resetting",
[NVME_CTRL_CONNECTING] = "connecting",
[NVME_CTRL_DELETING] = "deleting",
[NVME_CTRL_DELETING_NOIO]= "deleting (no IO)",
[NVME_CTRL_DEAD] = "dead",
};
if ((unsigned)ctrl->state < ARRAY_SIZE(state_name) &&
state_name[ctrl->state])
return sysfs_emit(buf, "%s\n", state_name[ctrl->state]);
return sysfs_emit(buf, "unknown state\n");
}
static DEVICE_ATTR(state, S_IRUGO, nvme_sysfs_show_state, NULL);
static ssize_t nvme_sysfs_show_subsysnqn(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct nvme_ctrl *ctrl = dev_get_drvdata(dev);
return sysfs_emit(buf, "%s\n", ctrl->subsys->subnqn);
}
static DEVICE_ATTR(subsysnqn, S_IRUGO, nvme_sysfs_show_subsysnqn, NULL);
static ssize_t nvme_sysfs_show_hostnqn(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct nvme_ctrl *ctrl = dev_get_drvdata(dev);
return sysfs_emit(buf, "%s\n", ctrl->opts->host->nqn);
}
static DEVICE_ATTR(hostnqn, S_IRUGO, nvme_sysfs_show_hostnqn, NULL);
static ssize_t nvme_sysfs_show_hostid(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct nvme_ctrl *ctrl = dev_get_drvdata(dev);
return sysfs_emit(buf, "%pU\n", &ctrl->opts->host->id);
}
static DEVICE_ATTR(hostid, S_IRUGO, nvme_sysfs_show_hostid, NULL);
static ssize_t nvme_sysfs_show_address(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct nvme_ctrl *ctrl = dev_get_drvdata(dev);
return ctrl->ops->get_address(ctrl, buf, PAGE_SIZE);
}
static DEVICE_ATTR(address, S_IRUGO, nvme_sysfs_show_address, NULL);
static ssize_t nvme_ctrl_loss_tmo_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct nvme_ctrl *ctrl = dev_get_drvdata(dev);
struct nvmf_ctrl_options *opts = ctrl->opts;
if (ctrl->opts->max_reconnects == -1)
return sysfs_emit(buf, "off\n");
return sysfs_emit(buf, "%d\n",
opts->max_reconnects * opts->reconnect_delay);
}
static ssize_t nvme_ctrl_loss_tmo_store(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
struct nvme_ctrl *ctrl = dev_get_drvdata(dev);
struct nvmf_ctrl_options *opts = ctrl->opts;
int ctrl_loss_tmo, err;
err = kstrtoint(buf, 10, &ctrl_loss_tmo);
if (err)
return -EINVAL;
if (ctrl_loss_tmo < 0)
opts->max_reconnects = -1;
else
opts->max_reconnects = DIV_ROUND_UP(ctrl_loss_tmo,
opts->reconnect_delay);
return count;
}
static DEVICE_ATTR(ctrl_loss_tmo, S_IRUGO | S_IWUSR,
nvme_ctrl_loss_tmo_show, nvme_ctrl_loss_tmo_store);
static ssize_t nvme_ctrl_reconnect_delay_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct nvme_ctrl *ctrl = dev_get_drvdata(dev);
if (ctrl->opts->reconnect_delay == -1)
return sysfs_emit(buf, "off\n");
return sysfs_emit(buf, "%d\n", ctrl->opts->reconnect_delay);
}
static ssize_t nvme_ctrl_reconnect_delay_store(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
struct nvme_ctrl *ctrl = dev_get_drvdata(dev);
unsigned int v;
int err;
err = kstrtou32(buf, 10, &v);
if (err)
return err;
ctrl->opts->reconnect_delay = v;
return count;
}
static DEVICE_ATTR(reconnect_delay, S_IRUGO | S_IWUSR,
nvme_ctrl_reconnect_delay_show, nvme_ctrl_reconnect_delay_store);
static ssize_t nvme_ctrl_fast_io_fail_tmo_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct nvme_ctrl *ctrl = dev_get_drvdata(dev);
if (ctrl->opts->fast_io_fail_tmo == -1)
return sysfs_emit(buf, "off\n");
return sysfs_emit(buf, "%d\n", ctrl->opts->fast_io_fail_tmo);
}
static ssize_t nvme_ctrl_fast_io_fail_tmo_store(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
struct nvme_ctrl *ctrl = dev_get_drvdata(dev);
struct nvmf_ctrl_options *opts = ctrl->opts;
int fast_io_fail_tmo, err;
err = kstrtoint(buf, 10, &fast_io_fail_tmo);
if (err)
return -EINVAL;
if (fast_io_fail_tmo < 0)
opts->fast_io_fail_tmo = -1;
else
opts->fast_io_fail_tmo = fast_io_fail_tmo;
return count;
}
static DEVICE_ATTR(fast_io_fail_tmo, S_IRUGO | S_IWUSR,
nvme_ctrl_fast_io_fail_tmo_show, nvme_ctrl_fast_io_fail_tmo_store);
static ssize_t cntrltype_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
static const char * const type[] = {
[NVME_CTRL_IO] = "io\n",
[NVME_CTRL_DISC] = "discovery\n",
[NVME_CTRL_ADMIN] = "admin\n",
};
struct nvme_ctrl *ctrl = dev_get_drvdata(dev);
if (ctrl->cntrltype > NVME_CTRL_ADMIN || !type[ctrl->cntrltype])
return sysfs_emit(buf, "reserved\n");
return sysfs_emit(buf, type[ctrl->cntrltype]);
}
static DEVICE_ATTR_RO(cntrltype);
static ssize_t dctype_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
static const char * const type[] = {
[NVME_DCTYPE_NOT_REPORTED] = "none\n",
[NVME_DCTYPE_DDC] = "ddc\n",
[NVME_DCTYPE_CDC] = "cdc\n",
};
struct nvme_ctrl *ctrl = dev_get_drvdata(dev);
if (ctrl->dctype > NVME_DCTYPE_CDC || !type[ctrl->dctype])
return sysfs_emit(buf, "reserved\n");
return sysfs_emit(buf, type[ctrl->dctype]);
}
static DEVICE_ATTR_RO(dctype);
#ifdef CONFIG_NVME_AUTH
static ssize_t nvme_ctrl_dhchap_secret_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct nvme_ctrl *ctrl = dev_get_drvdata(dev);
struct nvmf_ctrl_options *opts = ctrl->opts;
if (!opts->dhchap_secret)
return sysfs_emit(buf, "none\n");
return sysfs_emit(buf, "%s\n", opts->dhchap_secret);
}
static ssize_t nvme_ctrl_dhchap_secret_store(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
struct nvme_ctrl *ctrl = dev_get_drvdata(dev);
struct nvmf_ctrl_options *opts = ctrl->opts;
char *dhchap_secret;
if (!ctrl->opts->dhchap_secret)
return -EINVAL;
if (count < 7)
return -EINVAL;
if (memcmp(buf, "DHHC-1:", 7))
return -EINVAL;
dhchap_secret = kzalloc(count + 1, GFP_KERNEL);
if (!dhchap_secret)
return -ENOMEM;
memcpy(dhchap_secret, buf, count);
nvme_auth_stop(ctrl);
if (strcmp(dhchap_secret, opts->dhchap_secret)) {
struct nvme_dhchap_key *key, *host_key;
int ret;
ret = nvme_auth_generate_key(dhchap_secret, &key);
if (ret)
return ret;
kfree(opts->dhchap_secret);
opts->dhchap_secret = dhchap_secret;
host_key = ctrl->host_key;
mutex_lock(&ctrl->dhchap_auth_mutex);
ctrl->host_key = key;
mutex_unlock(&ctrl->dhchap_auth_mutex);
nvme_auth_free_key(host_key);
}
/* Start re-authentication */
dev_info(ctrl->device, "re-authenticating controller\n");
queue_work(nvme_wq, &ctrl->dhchap_auth_work);
return count;
}
static DEVICE_ATTR(dhchap_secret, S_IRUGO | S_IWUSR,
nvme_ctrl_dhchap_secret_show, nvme_ctrl_dhchap_secret_store);
static ssize_t nvme_ctrl_dhchap_ctrl_secret_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct nvme_ctrl *ctrl = dev_get_drvdata(dev);
struct nvmf_ctrl_options *opts = ctrl->opts;
if (!opts->dhchap_ctrl_secret)
return sysfs_emit(buf, "none\n");
return sysfs_emit(buf, "%s\n", opts->dhchap_ctrl_secret);
}
static ssize_t nvme_ctrl_dhchap_ctrl_secret_store(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
struct nvme_ctrl *ctrl = dev_get_drvdata(dev);
struct nvmf_ctrl_options *opts = ctrl->opts;
char *dhchap_secret;
if (!ctrl->opts->dhchap_ctrl_secret)
return -EINVAL;
if (count < 7)
return -EINVAL;
if (memcmp(buf, "DHHC-1:", 7))
return -EINVAL;
dhchap_secret = kzalloc(count + 1, GFP_KERNEL);
if (!dhchap_secret)
return -ENOMEM;
memcpy(dhchap_secret, buf, count);
nvme_auth_stop(ctrl);
if (strcmp(dhchap_secret, opts->dhchap_ctrl_secret)) {
struct nvme_dhchap_key *key, *ctrl_key;
int ret;
ret = nvme_auth_generate_key(dhchap_secret, &key);
if (ret)
return ret;
kfree(opts->dhchap_ctrl_secret);
opts->dhchap_ctrl_secret = dhchap_secret;
ctrl_key = ctrl->ctrl_key;
mutex_lock(&ctrl->dhchap_auth_mutex);
ctrl->ctrl_key = key;
mutex_unlock(&ctrl->dhchap_auth_mutex);
nvme_auth_free_key(ctrl_key);
}
/* Start re-authentication */
dev_info(ctrl->device, "re-authenticating controller\n");
queue_work(nvme_wq, &ctrl->dhchap_auth_work);
return count;
}
static DEVICE_ATTR(dhchap_ctrl_secret, S_IRUGO | S_IWUSR,
nvme_ctrl_dhchap_ctrl_secret_show, nvme_ctrl_dhchap_ctrl_secret_store);
#endif
static struct attribute *nvme_dev_attrs[] = {
&dev_attr_reset_controller.attr,
&dev_attr_rescan_controller.attr,
&dev_attr_model.attr,
&dev_attr_serial.attr,
&dev_attr_firmware_rev.attr,
&dev_attr_cntlid.attr,
&dev_attr_delete_controller.attr,
&dev_attr_transport.attr,
&dev_attr_subsysnqn.attr,
&dev_attr_address.attr,
&dev_attr_state.attr,
&dev_attr_numa_node.attr,
&dev_attr_queue_count.attr,
&dev_attr_sqsize.attr,
&dev_attr_hostnqn.attr,
&dev_attr_hostid.attr,
&dev_attr_ctrl_loss_tmo.attr,
&dev_attr_reconnect_delay.attr,
&dev_attr_fast_io_fail_tmo.attr,
&dev_attr_kato.attr,
&dev_attr_cntrltype.attr,
&dev_attr_dctype.attr,
#ifdef CONFIG_NVME_AUTH
&dev_attr_dhchap_secret.attr,
&dev_attr_dhchap_ctrl_secret.attr,
#endif
NULL
};
static umode_t nvme_dev_attrs_are_visible(struct kobject *kobj,
struct attribute *a, int n)
{
struct device *dev = container_of(kobj, struct device, kobj);
struct nvme_ctrl *ctrl = dev_get_drvdata(dev);
if (a == &dev_attr_delete_controller.attr && !ctrl->ops->delete_ctrl)
return 0;
if (a == &dev_attr_address.attr && !ctrl->ops->get_address)
return 0;
if (a == &dev_attr_hostnqn.attr && !ctrl->opts)
return 0;
if (a == &dev_attr_hostid.attr && !ctrl->opts)
return 0;
if (a == &dev_attr_ctrl_loss_tmo.attr && !ctrl->opts)
return 0;
if (a == &dev_attr_reconnect_delay.attr && !ctrl->opts)
return 0;
if (a == &dev_attr_fast_io_fail_tmo.attr && !ctrl->opts)
return 0;
#ifdef CONFIG_NVME_AUTH
if (a == &dev_attr_dhchap_secret.attr && !ctrl->opts)
return 0;
if (a == &dev_attr_dhchap_ctrl_secret.attr && !ctrl->opts)
return 0;
#endif
return a->mode;
}
const struct attribute_group nvme_dev_attrs_group = {
.attrs = nvme_dev_attrs,
.is_visible = nvme_dev_attrs_are_visible,
};
EXPORT_SYMBOL_GPL(nvme_dev_attrs_group);
static const struct attribute_group *nvme_dev_attr_groups[] = {
&nvme_dev_attrs_group,
NULL,
};
static struct nvme_ns_head *nvme_find_ns_head(struct nvme_ctrl *ctrl, static struct nvme_ns_head *nvme_find_ns_head(struct nvme_ctrl *ctrl,
unsigned nsid) unsigned nsid)
{ {
@ -4209,7 +3566,7 @@ static int nvme_init_ns_head(struct nvme_ns *ns, struct nvme_ns_info *info)
goto out_put_ns_head; goto out_put_ns_head;
} }
if (!multipath && !list_empty(&head->list)) { if (!multipath) {
dev_warn(ctrl->device, dev_warn(ctrl->device,
"Found shared namespace %d, but multipathing not supported.\n", "Found shared namespace %d, but multipathing not supported.\n",
info->nsid); info->nsid);
@ -4310,7 +3667,7 @@ static void nvme_alloc_ns(struct nvme_ctrl *ctrl, struct nvme_ns_info *info)
* instance as shared namespaces will show up as multiple block * instance as shared namespaces will show up as multiple block
* devices. * devices.
*/ */
if (ns->head->disk) { if (nvme_ns_head_multipath(ns->head)) {
sprintf(disk->disk_name, "nvme%dc%dn%d", ctrl->subsys->instance, sprintf(disk->disk_name, "nvme%dc%dn%d", ctrl->subsys->instance,
ctrl->instance, ns->head->instance); ctrl->instance, ns->head->instance);
disk->flags |= GENHD_FL_HIDDEN; disk->flags |= GENHD_FL_HIDDEN;
@ -5195,6 +4552,8 @@ int nvme_init_ctrl(struct nvme_ctrl *ctrl, struct device *dev,
return 0; return 0;
out_free_cdev: out_free_cdev:
nvme_fault_inject_fini(&ctrl->fault_inject);
dev_pm_qos_hide_latency_tolerance(ctrl->device);
cdev_device_del(&ctrl->cdev, ctrl->device); cdev_device_del(&ctrl->cdev, ctrl->device);
out_free_name: out_free_name:
nvme_put_ctrl(ctrl); nvme_put_ctrl(ctrl);

241
drivers/nvme/host/fabrics.c
View File

@ -21,35 +21,60 @@ static DEFINE_MUTEX(nvmf_hosts_mutex);
static struct nvmf_host *nvmf_default_host; static struct nvmf_host *nvmf_default_host;
static struct nvmf_host *__nvmf_host_find(const char *hostnqn) static struct nvmf_host *nvmf_host_alloc(const char *hostnqn, uuid_t *id)
{ {
struct nvmf_host *host; struct nvmf_host *host;
list_for_each_entry(host, &nvmf_hosts, list) { host = kmalloc(sizeof(*host), GFP_KERNEL);
if (!strcmp(host->nqn, hostnqn)) if (!host)
return host; return NULL;
}
return NULL; kref_init(&host->ref);
uuid_copy(&host->id, id);
strscpy(host->nqn, hostnqn, NVMF_NQN_SIZE);
return host;
} }
static struct nvmf_host *nvmf_host_add(const char *hostnqn) static struct nvmf_host *nvmf_host_add(const char *hostnqn, uuid_t *id)
{ {
struct nvmf_host *host; struct nvmf_host *host;
mutex_lock(&nvmf_hosts_mutex); mutex_lock(&nvmf_hosts_mutex);
host = __nvmf_host_find(hostnqn);
if (host) { /*
kref_get(&host->ref); * We have defined a host as how it is perceived by the target.
goto out_unlock; * Therefore, we don't allow different Host NQNs with the same Host ID.
* Similarly, we do not allow the usage of the same Host NQN with
* different Host IDs. This'll maintain unambiguous host identification.
*/
list_for_each_entry(host, &nvmf_hosts, list) {
bool same_hostnqn = !strcmp(host->nqn, hostnqn);
bool same_hostid = uuid_equal(&host->id, id);
if (same_hostnqn && same_hostid) {
kref_get(&host->ref);
goto out_unlock;
}
if (same_hostnqn) {
pr_err("found same hostnqn %s but different hostid %pUb\n",
hostnqn, id);
host = ERR_PTR(-EINVAL);
goto out_unlock;
}
if (same_hostid) {
pr_err("found same hostid %pUb but different hostnqn %s\n",
id, hostnqn);
host = ERR_PTR(-EINVAL);
goto out_unlock;
}
} }
host = kmalloc(sizeof(*host), GFP_KERNEL); host = nvmf_host_alloc(hostnqn, id);
if (!host) if (!host) {
host = ERR_PTR(-ENOMEM);
goto out_unlock; goto out_unlock;
}
kref_init(&host->ref);
strscpy(host->nqn, hostnqn, NVMF_NQN_SIZE);
list_add_tail(&host->list, &nvmf_hosts); list_add_tail(&host->list, &nvmf_hosts);
out_unlock: out_unlock:
@ -60,16 +85,17 @@ out_unlock:
static struct nvmf_host *nvmf_host_default(void) static struct nvmf_host *nvmf_host_default(void)
{ {
struct nvmf_host *host; struct nvmf_host *host;
char nqn[NVMF_NQN_SIZE];
uuid_t id;
host = kmalloc(sizeof(*host), GFP_KERNEL); uuid_gen(&id);
snprintf(nqn, NVMF_NQN_SIZE,
"nqn.2014-08.org.nvmexpress:uuid:%pUb", &id);
host = nvmf_host_alloc(nqn, &id);
if (!host) if (!host)
return NULL; return NULL;
kref_init(&host->ref);
uuid_gen(&host->id);
snprintf(host->nqn, NVMF_NQN_SIZE,
"nqn.2014-08.org.nvmexpress:uuid:%pUb", &host->id);
mutex_lock(&nvmf_hosts_mutex); mutex_lock(&nvmf_hosts_mutex);
list_add_tail(&host->list, &nvmf_hosts); list_add_tail(&host->list, &nvmf_hosts);
mutex_unlock(&nvmf_hosts_mutex); mutex_unlock(&nvmf_hosts_mutex);
@ -349,6 +375,45 @@ static void nvmf_log_connect_error(struct nvme_ctrl *ctrl,
} }
} }
static struct nvmf_connect_data *nvmf_connect_data_prep(struct nvme_ctrl *ctrl,
u16 cntlid)
{
struct nvmf_connect_data *data;
data = kzalloc(sizeof(*data), GFP_KERNEL);
if (!data)
return NULL;
uuid_copy(&data->hostid, &ctrl->opts->host->id);
data->cntlid = cpu_to_le16(cntlid);
strncpy(data->subsysnqn, ctrl->opts->subsysnqn, NVMF_NQN_SIZE);
strncpy(data->hostnqn, ctrl->opts->host->nqn, NVMF_NQN_SIZE);
return data;
}
static void nvmf_connect_cmd_prep(struct nvme_ctrl *ctrl, u16 qid,
struct nvme_command *cmd)
{
cmd->connect.opcode = nvme_fabrics_command;
cmd->connect.fctype = nvme_fabrics_type_connect;
cmd->connect.qid = cpu_to_le16(qid);
if (qid) {
cmd->connect.sqsize = cpu_to_le16(ctrl->sqsize);
} else {
cmd->connect.sqsize = cpu_to_le16(NVME_AQ_DEPTH - 1);
/*
* set keep-alive timeout in seconds granularity (ms * 1000)
*/
cmd->connect.kato = cpu_to_le32(ctrl->kato * 1000);
}
if (ctrl->opts->disable_sqflow)
cmd->connect.cattr |= NVME_CONNECT_DISABLE_SQFLOW;
}
/** /**
* nvmf_connect_admin_queue() - NVMe Fabrics Admin Queue "Connect" * nvmf_connect_admin_queue() - NVMe Fabrics Admin Queue "Connect"
* API function. * API function.
@ -377,28 +442,12 @@ int nvmf_connect_admin_queue(struct nvme_ctrl *ctrl)
int ret; int ret;
u32 result; u32 result;
cmd.connect.opcode = nvme_fabrics_command; nvmf_connect_cmd_prep(ctrl, 0, &cmd);
cmd.connect.fctype = nvme_fabrics_type_connect;
cmd.connect.qid = 0;
cmd.connect.sqsize = cpu_to_le16(NVME_AQ_DEPTH - 1);
/* data = nvmf_connect_data_prep(ctrl, 0xffff);
* Set keep-alive timeout in seconds granularity (ms * 1000)
*/
cmd.connect.kato = cpu_to_le32(ctrl->kato * 1000);
if (ctrl->opts->disable_sqflow)
cmd.connect.cattr |= NVME_CONNECT_DISABLE_SQFLOW;
data = kzalloc(sizeof(*data), GFP_KERNEL);
if (!data) if (!data)
return -ENOMEM; return -ENOMEM;
uuid_copy(&data->hostid, &ctrl->opts->host->id);
data->cntlid = cpu_to_le16(0xffff);
strncpy(data->subsysnqn, ctrl->opts->subsysnqn, NVMF_NQN_SIZE);
strncpy(data->hostnqn, ctrl->opts->host->nqn, NVMF_NQN_SIZE);
ret = __nvme_submit_sync_cmd(ctrl->fabrics_q, &cmd, &res, ret = __nvme_submit_sync_cmd(ctrl->fabrics_q, &cmd, &res,
data, sizeof(*data), NVME_QID_ANY, 1, data, sizeof(*data), NVME_QID_ANY, 1,
BLK_MQ_REQ_RESERVED | BLK_MQ_REQ_NOWAIT); BLK_MQ_REQ_RESERVED | BLK_MQ_REQ_NOWAIT);
@ -468,23 +517,12 @@ int nvmf_connect_io_queue(struct nvme_ctrl *ctrl, u16 qid)
int ret; int ret;
u32 result; u32 result;
cmd.connect.opcode = nvme_fabrics_command; nvmf_connect_cmd_prep(ctrl, qid, &cmd);
cmd.connect.fctype = nvme_fabrics_type_connect;
cmd.connect.qid = cpu_to_le16(qid);
cmd.connect.sqsize = cpu_to_le16(ctrl->sqsize);
if (ctrl->opts->disable_sqflow) data = nvmf_connect_data_prep(ctrl, ctrl->cntlid);
cmd.connect.cattr |= NVME_CONNECT_DISABLE_SQFLOW;
data = kzalloc(sizeof(*data), GFP_KERNEL);
if (!data) if (!data)
return -ENOMEM; return -ENOMEM;
uuid_copy(&data->hostid, &ctrl->opts->host->id);
data->cntlid = cpu_to_le16(ctrl->cntlid);
strncpy(data->subsysnqn, ctrl->opts->subsysnqn, NVMF_NQN_SIZE);
strncpy(data->hostnqn, ctrl->opts->host->nqn, NVMF_NQN_SIZE);
ret = __nvme_submit_sync_cmd(ctrl->connect_q, &cmd, &res, ret = __nvme_submit_sync_cmd(ctrl->connect_q, &cmd, &res,
data, sizeof(*data), qid, 1, data, sizeof(*data), qid, 1,
BLK_MQ_REQ_RESERVED | BLK_MQ_REQ_NOWAIT); BLK_MQ_REQ_RESERVED | BLK_MQ_REQ_NOWAIT);
@ -621,6 +659,7 @@ static int nvmf_parse_options(struct nvmf_ctrl_options *opts,
size_t nqnlen = 0; size_t nqnlen = 0;
int ctrl_loss_tmo = NVMF_DEF_CTRL_LOSS_TMO; int ctrl_loss_tmo = NVMF_DEF_CTRL_LOSS_TMO;
uuid_t hostid; uuid_t hostid;
char hostnqn[NVMF_NQN_SIZE];
/* Set defaults */ /* Set defaults */
opts->queue_size = NVMF_DEF_QUEUE_SIZE; opts->queue_size = NVMF_DEF_QUEUE_SIZE;
@ -637,7 +676,9 @@ static int nvmf_parse_options(struct nvmf_ctrl_options *opts,
if (!options) if (!options)
return -ENOMEM; return -ENOMEM;
uuid_gen(&hostid); /* use default host if not given by user space */
uuid_copy(&hostid, &nvmf_default_host->id);
strscpy(hostnqn, nvmf_default_host->nqn, NVMF_NQN_SIZE);
while ((p = strsep(&o, ",\n")) != NULL) { while ((p = strsep(&o, ",\n")) != NULL) {
if (!*p) if (!*p)
@ -783,12 +824,8 @@ static int nvmf_parse_options(struct nvmf_ctrl_options *opts,
ret = -EINVAL; ret = -EINVAL;
goto out; goto out;
} }
opts->host = nvmf_host_add(p); strscpy(hostnqn, p, NVMF_NQN_SIZE);
kfree(p); kfree(p);
if (!opts->host) {
ret = -ENOMEM;
goto out;
}
break; break;
case NVMF_OPT_RECONNECT_DELAY: case NVMF_OPT_RECONNECT_DELAY:
if (match_int(args, &token)) { if (match_int(args, &token)) {
@ -945,18 +982,94 @@ static int nvmf_parse_options(struct nvmf_ctrl_options *opts,
opts->fast_io_fail_tmo, ctrl_loss_tmo); opts->fast_io_fail_tmo, ctrl_loss_tmo);
} }
if (!opts->host) { opts->host = nvmf_host_add(hostnqn, &hostid);
kref_get(&nvmf_default_host->ref); if (IS_ERR(opts->host)) {
opts->host = nvmf_default_host; ret = PTR_ERR(opts->host);
opts->host = NULL;
goto out;
} }
uuid_copy(&opts->host->id, &hostid);
out: out:
kfree(options); kfree(options);
return ret; return ret;
} }
void nvmf_set_io_queues(struct nvmf_ctrl_options *opts, u32 nr_io_queues,
u32 io_queues[HCTX_MAX_TYPES])
{
if (opts->nr_write_queues && opts->nr_io_queues < nr_io_queues) {
/*
* separate read/write queues
* hand out dedicated default queues only after we have
* sufficient read queues.
*/
io_queues[HCTX_TYPE_READ] = opts->nr_io_queues;
nr_io_queues -= io_queues[HCTX_TYPE_READ];
io_queues[HCTX_TYPE_DEFAULT] =
min(opts->nr_write_queues, nr_io_queues);
nr_io_queues -= io_queues[HCTX_TYPE_DEFAULT];
} else {
/*
* shared read/write queues
* either no write queues were requested, or we don't have
* sufficient queue count to have dedicated default queues.
*/
io_queues[HCTX_TYPE_DEFAULT] =
min(opts->nr_io_queues, nr_io_queues);
nr_io_queues -= io_queues[HCTX_TYPE_DEFAULT];
}
if (opts->nr_poll_queues && nr_io_queues) {
/* map dedicated poll queues only if we have queues left */
io_queues[HCTX_TYPE_POLL] =
min(opts->nr_poll_queues, nr_io_queues);
}
}
EXPORT_SYMBOL_GPL(nvmf_set_io_queues);
void nvmf_map_queues(struct blk_mq_tag_set *set, struct nvme_ctrl *ctrl,
u32 io_queues[HCTX_MAX_TYPES])
{
struct nvmf_ctrl_options *opts = ctrl->opts;
if (opts->nr_write_queues && io_queues[HCTX_TYPE_READ]) {
/* separate read/write queues */
set->map[HCTX_TYPE_DEFAULT].nr_queues =
io_queues[HCTX_TYPE_DEFAULT];
set->map[HCTX_TYPE_DEFAULT].queue_offset = 0;
set->map[HCTX_TYPE_READ].nr_queues =
io_queues[HCTX_TYPE_READ];
set->map[HCTX_TYPE_READ].queue_offset =
io_queues[HCTX_TYPE_DEFAULT];
} else {
/* shared read/write queues */
set->map[HCTX_TYPE_DEFAULT].nr_queues =
io_queues[HCTX_TYPE_DEFAULT];
set->map[HCTX_TYPE_DEFAULT].queue_offset = 0;
set->map[HCTX_TYPE_READ].nr_queues =
io_queues[HCTX_TYPE_DEFAULT];
set->map[HCTX_TYPE_READ].queue_offset = 0;
}
blk_mq_map_queues(&set->map[HCTX_TYPE_DEFAULT]);
blk_mq_map_queues(&set->map[HCTX_TYPE_READ]);
if (opts->nr_poll_queues && io_queues[HCTX_TYPE_POLL]) {
/* map dedicated poll queues only if we have queues left */
set->map[HCTX_TYPE_POLL].nr_queues = io_queues[HCTX_TYPE_POLL];
set->map[HCTX_TYPE_POLL].queue_offset =
io_queues[HCTX_TYPE_DEFAULT] +
io_queues[HCTX_TYPE_READ];
blk_mq_map_queues(&set->map[HCTX_TYPE_POLL]);
}
dev_info(ctrl->device,
"mapped %d/%d/%d default/read/poll queues.\n",
io_queues[HCTX_TYPE_DEFAULT],
io_queues[HCTX_TYPE_READ],
io_queues[HCTX_TYPE_POLL]);
}
EXPORT_SYMBOL_GPL(nvmf_map_queues);
static int nvmf_check_required_opts(struct nvmf_ctrl_options *opts, static int nvmf_check_required_opts(struct nvmf_ctrl_options *opts,
unsigned int required_opts) unsigned int required_opts)
{ {

21
drivers/nvme/host/fabrics.h
View File

@ -77,6 +77,9 @@ enum {
* with the parsing opts enum. * with the parsing opts enum.
* @mask: Used by the fabrics library to parse through sysfs options * @mask: Used by the fabrics library to parse through sysfs options
* on adding a NVMe controller. * on adding a NVMe controller.
* @max_reconnects: maximum number of allowed reconnect attempts before removing
* the controller, (-1) means reconnect forever, zero means remove
* immediately;
* @transport: Holds the fabric transport "technology name" (for a lack of * @transport: Holds the fabric transport "technology name" (for a lack of
* better description) that will be used by an NVMe controller * better description) that will be used by an NVMe controller
* being added. * being added.
@ -96,9 +99,6 @@ enum {
* @discovery_nqn: indicates if the subsysnqn is the well-known discovery NQN. * @discovery_nqn: indicates if the subsysnqn is the well-known discovery NQN.
* @kato: Keep-alive timeout. * @kato: Keep-alive timeout.
* @host: Virtual NVMe host, contains the NQN and Host ID. * @host: Virtual NVMe host, contains the NQN and Host ID.
* @max_reconnects: maximum number of allowed reconnect attempts before removing
* the controller, (-1) means reconnect forever, zero means remove
* immediately;
* @dhchap_secret: DH-HMAC-CHAP secret * @dhchap_secret: DH-HMAC-CHAP secret
* @dhchap_ctrl_secret: DH-HMAC-CHAP controller secret for bi-directional * @dhchap_ctrl_secret: DH-HMAC-CHAP controller secret for bi-directional
* authentication * authentication
@ -112,6 +112,7 @@ enum {
*/ */
struct nvmf_ctrl_options { struct nvmf_ctrl_options {
unsigned mask; unsigned mask;
int max_reconnects;
char *transport; char *transport;
char *subsysnqn; char *subsysnqn;
char *traddr; char *traddr;
@ -125,7 +126,6 @@ struct nvmf_ctrl_options {
bool duplicate_connect; bool duplicate_connect;
unsigned int kato; unsigned int kato;
struct nvmf_host *host; struct nvmf_host *host;
int max_reconnects;
char *dhchap_secret; char *dhchap_secret;
char *dhchap_ctrl_secret; char *dhchap_ctrl_secret;
bool disable_sqflow; bool disable_sqflow;
@ -181,7 +181,7 @@ nvmf_ctlr_matches_baseopts(struct nvme_ctrl *ctrl,
ctrl->state == NVME_CTRL_DEAD || ctrl->state == NVME_CTRL_DEAD ||
strcmp(opts->subsysnqn, ctrl->opts->subsysnqn) || strcmp(opts->subsysnqn, ctrl->opts->subsysnqn) ||
strcmp(opts->host->nqn, ctrl->opts->host->nqn) || strcmp(opts->host->nqn, ctrl->opts->host->nqn) ||
memcmp(&opts->host->id, &ctrl->opts->host->id, sizeof(uuid_t))) !uuid_equal(&opts->host->id, &ctrl->opts->host->id))
return false; return false;
return true; return true;
@ -203,6 +203,13 @@ static inline void nvmf_complete_timed_out_request(struct request *rq)
} }
} }
static inline unsigned int nvmf_nr_io_queues(struct nvmf_ctrl_options *opts)
{
return min(opts->nr_io_queues, num_online_cpus()) +
min(opts->nr_write_queues, num_online_cpus()) +
min(opts->nr_poll_queues, num_online_cpus());
}
int nvmf_reg_read32(struct nvme_ctrl *ctrl, u32 off, u32 *val); int nvmf_reg_read32(struct nvme_ctrl *ctrl, u32 off, u32 *val);
int nvmf_reg_read64(struct nvme_ctrl *ctrl, u32 off, u64 *val); int nvmf_reg_read64(struct nvme_ctrl *ctrl, u32 off, u64 *val);
int nvmf_reg_write32(struct nvme_ctrl *ctrl, u32 off, u32 val); int nvmf_reg_write32(struct nvme_ctrl *ctrl, u32 off, u32 val);
@ -215,5 +222,9 @@ int nvmf_get_address(struct nvme_ctrl *ctrl, char *buf, int size);
bool nvmf_should_reconnect(struct nvme_ctrl *ctrl); bool nvmf_should_reconnect(struct nvme_ctrl *ctrl);
bool nvmf_ip_options_match(struct nvme_ctrl *ctrl, bool nvmf_ip_options_match(struct nvme_ctrl *ctrl,
struct nvmf_ctrl_options *opts); struct nvmf_ctrl_options *opts);
void nvmf_set_io_queues(struct nvmf_ctrl_options *opts, u32 nr_io_queues,
u32 io_queues[HCTX_MAX_TYPES]);
void nvmf_map_queues(struct blk_mq_tag_set *set, struct nvme_ctrl *ctrl,
u32 io_queues[HCTX_MAX_TYPES]);
#endif /* _NVME_FABRICS_H */ #endif /* _NVME_FABRICS_H */

11
drivers/nvme/host/nvme.h
View File

@ -242,12 +242,13 @@ enum nvme_ctrl_flags {
NVME_CTRL_ADMIN_Q_STOPPED = 1, NVME_CTRL_ADMIN_Q_STOPPED = 1,
NVME_CTRL_STARTED_ONCE = 2, NVME_CTRL_STARTED_ONCE = 2,
NVME_CTRL_STOPPED = 3, NVME_CTRL_STOPPED = 3,
NVME_CTRL_SKIP_ID_CNS_CS = 4,
}; };
struct nvme_ctrl { struct nvme_ctrl {
bool comp_seen; bool comp_seen;
enum nvme_ctrl_state state;
bool identified; bool identified;
enum nvme_ctrl_state state;
spinlock_t lock; spinlock_t lock;
struct mutex scan_lock; struct mutex scan_lock;
const struct nvme_ctrl_ops *ops; const struct nvme_ctrl_ops *ops;
@ -279,8 +280,8 @@ struct nvme_ctrl {
char name[12]; char name[12];
u16 cntlid; u16 cntlid;
u32 ctrl_config;
u16 mtfa; u16 mtfa;
u32 ctrl_config;
u32 queue_count; u32 queue_count;
u64 cap; u64 cap;
@ -353,10 +354,10 @@ struct nvme_ctrl {
bool apst_enabled; bool apst_enabled;
/* PCIe only: */ /* PCIe only: */
u16 hmmaxd;
u32 hmpre; u32 hmpre;
u32 hmmin; u32 hmmin;
u32 hmminds; u32 hmminds;
u16 hmmaxd;
/* Fabrics only */ /* Fabrics only */
u32 ioccsz; u32 ioccsz;
@ -860,7 +861,11 @@ extern const struct attribute_group *nvme_ns_id_attr_groups[];
extern const struct pr_ops nvme_pr_ops; extern const struct pr_ops nvme_pr_ops;
extern const struct block_device_operations nvme_ns_head_ops; extern const struct block_device_operations nvme_ns_head_ops;
extern const struct attribute_group nvme_dev_attrs_group; extern const struct attribute_group nvme_dev_attrs_group;
extern const struct attribute_group *nvme_subsys_attrs_groups[];
extern const struct attribute_group *nvme_dev_attr_groups[];
extern const struct block_device_operations nvme_bdev_ops;
void nvme_delete_ctrl_sync(struct nvme_ctrl *ctrl);
struct nvme_ns *nvme_find_path(struct nvme_ns_head *head); struct nvme_ns *nvme_find_path(struct nvme_ns_head *head);
#ifdef CONFIG_NVME_MULTIPATH #ifdef CONFIG_NVME_MULTIPATH
static inline bool nvme_ctrl_use_ana(struct nvme_ctrl *ctrl) static inline bool nvme_ctrl_use_ana(struct nvme_ctrl *ctrl)

3
drivers/nvme/host/pci.c
View File

@ -420,10 +420,9 @@ static int nvme_pci_init_request(struct blk_mq_tag_set *set,
struct request *req, unsigned int hctx_idx, struct request *req, unsigned int hctx_idx,
unsigned int numa_node) unsigned int numa_node)
{ {
struct nvme_dev *dev = to_nvme_dev(set->driver_data);
struct nvme_iod *iod = blk_mq_rq_to_pdu(req); struct nvme_iod *iod = blk_mq_rq_to_pdu(req);
nvme_req(req)->ctrl = &dev->ctrl; nvme_req(req)->ctrl = set->driver_data;
nvme_req(req)->cmd = &iod->cmd; nvme_req(req)->cmd = &iod->cmd;
return 0; return 0;
} }

81
drivers/nvme/host/rdma.c
View File

@ -501,7 +501,7 @@ static int nvme_rdma_create_queue_ib(struct nvme_rdma_queue *queue)
} }
ibdev = queue->device->dev; ibdev = queue->device->dev;
/* +1 for ib_stop_cq */ /* +1 for ib_drain_qp */
queue->cq_size = cq_factor * queue->queue_size + 1; queue->cq_size = cq_factor * queue->queue_size + 1;
ret = nvme_rdma_create_cq(ibdev, queue); ret = nvme_rdma_create_cq(ibdev, queue);
@ -713,18 +713,10 @@ out_stop_queues:
static int nvme_rdma_alloc_io_queues(struct nvme_rdma_ctrl *ctrl) static int nvme_rdma_alloc_io_queues(struct nvme_rdma_ctrl *ctrl)
{ {
struct nvmf_ctrl_options *opts = ctrl->ctrl.opts; struct nvmf_ctrl_options *opts = ctrl->ctrl.opts;
struct ib_device *ibdev = ctrl->device->dev; unsigned int nr_io_queues;
unsigned int nr_io_queues, nr_default_queues;
unsigned int nr_read_queues, nr_poll_queues;
int i, ret; int i, ret;
nr_read_queues = min_t(unsigned int, ibdev->num_comp_vectors, nr_io_queues = nvmf_nr_io_queues(opts);
min(opts->nr_io_queues, num_online_cpus()));
nr_default_queues = min_t(unsigned int, ibdev->num_comp_vectors,
min(opts->nr_write_queues, num_online_cpus()));
nr_poll_queues = min(opts->nr_poll_queues, num_online_cpus());
nr_io_queues = nr_read_queues + nr_default_queues + nr_poll_queues;
ret = nvme_set_queue_count(&ctrl->ctrl, &nr_io_queues); ret = nvme_set_queue_count(&ctrl->ctrl, &nr_io_queues);
if (ret) if (ret)
return ret; return ret;
@ -739,34 +731,7 @@ static int nvme_rdma_alloc_io_queues(struct nvme_rdma_ctrl *ctrl)
dev_info(ctrl->ctrl.device, dev_info(ctrl->ctrl.device,
"creating %d I/O queues.\n", nr_io_queues); "creating %d I/O queues.\n", nr_io_queues);
if (opts->nr_write_queues && nr_read_queues < nr_io_queues) { nvmf_set_io_queues(opts, nr_io_queues, ctrl->io_queues);
/*
* separate read/write queues
* hand out dedicated default queues only after we have
* sufficient read queues.
*/
ctrl->io_queues[HCTX_TYPE_READ] = nr_read_queues;
nr_io_queues -= ctrl->io_queues[HCTX_TYPE_READ];
ctrl->io_queues[HCTX_TYPE_DEFAULT] =
min(nr_default_queues, nr_io_queues);
nr_io_queues -= ctrl->io_queues[HCTX_TYPE_DEFAULT];
} else {
/*
* shared read/write queues
* either no write queues were requested, or we don't have
* sufficient queue count to have dedicated default queues.
*/
ctrl->io_queues[HCTX_TYPE_DEFAULT] =
min(nr_read_queues, nr_io_queues);
nr_io_queues -= ctrl->io_queues[HCTX_TYPE_DEFAULT];
}
if (opts->nr_poll_queues && nr_io_queues) {
/* map dedicated poll queues only if we have queues left */
ctrl->io_queues[HCTX_TYPE_POLL] =
min(nr_poll_queues, nr_io_queues);
}
for (i = 1; i < ctrl->ctrl.queue_count; i++) { for (i = 1; i < ctrl->ctrl.queue_count; i++) {
ret = nvme_rdma_alloc_queue(ctrl, i, ret = nvme_rdma_alloc_queue(ctrl, i,
ctrl->ctrl.sqsize + 1); ctrl->ctrl.sqsize + 1);
@ -2138,44 +2103,8 @@ static void nvme_rdma_complete_rq(struct request *rq)
static void nvme_rdma_map_queues(struct blk_mq_tag_set *set) static void nvme_rdma_map_queues(struct blk_mq_tag_set *set)
{ {
struct nvme_rdma_ctrl *ctrl = to_rdma_ctrl(set->driver_data); struct nvme_rdma_ctrl *ctrl = to_rdma_ctrl(set->driver_data);
struct nvmf_ctrl_options *opts = ctrl->ctrl.opts;
if (opts->nr_write_queues && ctrl->io_queues[HCTX_TYPE_READ]) { nvmf_map_queues(set, &ctrl->ctrl, ctrl->io_queues);
/* separate read/write queues */
set->map[HCTX_TYPE_DEFAULT].nr_queues =
ctrl->io_queues[HCTX_TYPE_DEFAULT];
set->map[HCTX_TYPE_DEFAULT].queue_offset = 0;
set->map[HCTX_TYPE_READ].nr_queues =
ctrl->io_queues[HCTX_TYPE_READ];
set->map[HCTX_TYPE_READ].queue_offset =
ctrl->io_queues[HCTX_TYPE_DEFAULT];
} else {
/* shared read/write queues */
set->map[HCTX_TYPE_DEFAULT].nr_queues =
ctrl->io_queues[HCTX_TYPE_DEFAULT];
set->map[HCTX_TYPE_DEFAULT].queue_offset = 0;
set->map[HCTX_TYPE_READ].nr_queues =
ctrl->io_queues[HCTX_TYPE_DEFAULT];
set->map[HCTX_TYPE_READ].queue_offset = 0;
}
blk_mq_map_queues(&set->map[HCTX_TYPE_DEFAULT]);
blk_mq_map_queues(&set->map[HCTX_TYPE_READ]);
if (opts->nr_poll_queues && ctrl->io_queues[HCTX_TYPE_POLL]) {
/* map dedicated poll queues only if we have queues left */
set->map[HCTX_TYPE_POLL].nr_queues =
ctrl->io_queues[HCTX_TYPE_POLL];
set->map[HCTX_TYPE_POLL].queue_offset =
ctrl->io_queues[HCTX_TYPE_DEFAULT] +
ctrl->io_queues[HCTX_TYPE_READ];
blk_mq_map_queues(&set->map[HCTX_TYPE_POLL]);
}
dev_info(ctrl->ctrl.device,
"mapped %d/%d/%d default/read/poll queues.\n",
ctrl->io_queues[HCTX_TYPE_DEFAULT],
ctrl->io_queues[HCTX_TYPE_READ],
ctrl->io_queues[HCTX_TYPE_POLL]);
} }
static const struct blk_mq_ops nvme_rdma_mq_ops = { static const struct blk_mq_ops nvme_rdma_mq_ops = {

668
drivers/nvme/host/sysfs.c Normal file
View File

@ -0,0 +1,668 @@
// SPDX-License-Identifier: GPL-2.0
/*
* Sysfs interface for the NVMe core driver.
*
* Copyright (c) 2011-2014, Intel Corporation.
*/
#include <linux/nvme-auth.h>
#include "nvme.h"
#include "fabrics.h"
static ssize_t nvme_sysfs_reset(struct device *dev,
struct device_attribute *attr, const char *buf,
size_t count)
{
struct nvme_ctrl *ctrl = dev_get_drvdata(dev);
int ret;
ret = nvme_reset_ctrl_sync(ctrl);
if (ret < 0)
return ret;
return count;
}
static DEVICE_ATTR(reset_controller, S_IWUSR, NULL, nvme_sysfs_reset);
static ssize_t nvme_sysfs_rescan(struct device *dev,
struct device_attribute *attr, const char *buf,
size_t count)
{
struct nvme_ctrl *ctrl = dev_get_drvdata(dev);
nvme_queue_scan(ctrl);
return count;
}
static DEVICE_ATTR(rescan_controller, S_IWUSR, NULL, nvme_sysfs_rescan);
static inline struct nvme_ns_head *dev_to_ns_head(struct device *dev)
{
struct gendisk *disk = dev_to_disk(dev);
if (disk->fops == &nvme_bdev_ops)
return nvme_get_ns_from_dev(dev)->head;
else
return disk->private_data;
}
static ssize_t wwid_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct nvme_ns_head *head = dev_to_ns_head(dev);
struct nvme_ns_ids *ids = &head->ids;
struct nvme_subsystem *subsys = head->subsys;
int serial_len = sizeof(subsys->serial);
int model_len = sizeof(subsys->model);
if (!uuid_is_null(&ids->uuid))
return sysfs_emit(buf, "uuid.%pU\n", &ids->uuid);
if (memchr_inv(ids->nguid, 0, sizeof(ids->nguid)))
return sysfs_emit(buf, "eui.%16phN\n", ids->nguid);
if (memchr_inv(ids->eui64, 0, sizeof(ids->eui64)))
return sysfs_emit(buf, "eui.%8phN\n", ids->eui64);
while (serial_len > 0 && (subsys->serial[serial_len - 1] == ' ' ||
subsys->serial[serial_len - 1] == '\0'))
serial_len--;
while (model_len > 0 && (subsys->model[model_len - 1] == ' ' ||
subsys->model[model_len - 1] == '\0'))
model_len--;
return sysfs_emit(buf, "nvme.%04x-%*phN-%*phN-%08x\n", subsys->vendor_id,
serial_len, subsys->serial, model_len, subsys->model,
head->ns_id);
}
static DEVICE_ATTR_RO(wwid);
static ssize_t nguid_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
return sysfs_emit(buf, "%pU\n", dev_to_ns_head(dev)->ids.nguid);
}
static DEVICE_ATTR_RO(nguid);
static ssize_t uuid_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct nvme_ns_ids *ids = &dev_to_ns_head(dev)->ids;
/* For backward compatibility expose the NGUID to userspace if
* we have no UUID set
*/
if (uuid_is_null(&ids->uuid)) {
dev_warn_ratelimited(dev,
"No UUID available providing old NGUID\n");
return sysfs_emit(buf, "%pU\n", ids->nguid);
}
return sysfs_emit(buf, "%pU\n", &ids->uuid);
}
static DEVICE_ATTR_RO(uuid);
static ssize_t eui_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
return sysfs_emit(buf, "%8ph\n", dev_to_ns_head(dev)->ids.eui64);
}
static DEVICE_ATTR_RO(eui);
static ssize_t nsid_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
return sysfs_emit(buf, "%d\n", dev_to_ns_head(dev)->ns_id);
}
static DEVICE_ATTR_RO(nsid);
static struct attribute *nvme_ns_id_attrs[] = {
&dev_attr_wwid.attr,
&dev_attr_uuid.attr,
&dev_attr_nguid.attr,
&dev_attr_eui.attr,
&dev_attr_nsid.attr,
#ifdef CONFIG_NVME_MULTIPATH
&dev_attr_ana_grpid.attr,
&dev_attr_ana_state.attr,
#endif
NULL,
};
static umode_t nvme_ns_id_attrs_are_visible(struct kobject *kobj,
struct attribute *a, int n)
{
struct device *dev = container_of(kobj, struct device, kobj);
struct nvme_ns_ids *ids = &dev_to_ns_head(dev)->ids;
if (a == &dev_attr_uuid.attr) {
if (uuid_is_null(&ids->uuid) &&
!memchr_inv(ids->nguid, 0, sizeof(ids->nguid)))
return 0;
}
if (a == &dev_attr_nguid.attr) {
if (!memchr_inv(ids->nguid, 0, sizeof(ids->nguid)))
return 0;
}
if (a == &dev_attr_eui.attr) {
if (!memchr_inv(ids->eui64, 0, sizeof(ids->eui64)))
return 0;
}
#ifdef CONFIG_NVME_MULTIPATH
if (a == &dev_attr_ana_grpid.attr || a == &dev_attr_ana_state.attr) {
if (dev_to_disk(dev)->fops != &nvme_bdev_ops) /* per-path attr */
return 0;
if (!nvme_ctrl_use_ana(nvme_get_ns_from_dev(dev)->ctrl))
return 0;
}
#endif
return a->mode;
}
static const struct attribute_group nvme_ns_id_attr_group = {
.attrs = nvme_ns_id_attrs,
.is_visible = nvme_ns_id_attrs_are_visible,
};
const struct attribute_group *nvme_ns_id_attr_groups[] = {
&nvme_ns_id_attr_group,
NULL,
};
#define nvme_show_str_function(field) \
static ssize_t field##_show(struct device *dev, \
struct device_attribute *attr, char *buf) \
{ \
struct nvme_ctrl *ctrl = dev_get_drvdata(dev); \
return sysfs_emit(buf, "%.*s\n", \
(int)sizeof(ctrl->subsys->field), ctrl->subsys->field); \
} \
static DEVICE_ATTR(field, S_IRUGO, field##_show, NULL);
nvme_show_str_function(model);
nvme_show_str_function(serial);
nvme_show_str_function(firmware_rev);
#define nvme_show_int_function(field) \
static ssize_t field##_show(struct device *dev, \
struct device_attribute *attr, char *buf) \
{ \
struct nvme_ctrl *ctrl = dev_get_drvdata(dev); \
return sysfs_emit(buf, "%d\n", ctrl->field); \
} \
static DEVICE_ATTR(field, S_IRUGO, field##_show, NULL);
nvme_show_int_function(cntlid);
nvme_show_int_function(numa_node);
nvme_show_int_function(queue_count);
nvme_show_int_function(sqsize);
nvme_show_int_function(kato);
static ssize_t nvme_sysfs_delete(struct device *dev,
struct device_attribute *attr, const char *buf,
size_t count)
{
struct nvme_ctrl *ctrl = dev_get_drvdata(dev);
if (!test_bit(NVME_CTRL_STARTED_ONCE, &ctrl->flags))
return -EBUSY;
if (device_remove_file_self(dev, attr))
nvme_delete_ctrl_sync(ctrl);
return count;
}
static DEVICE_ATTR(delete_controller, S_IWUSR, NULL, nvme_sysfs_delete);
static ssize_t nvme_sysfs_show_transport(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct nvme_ctrl *ctrl = dev_get_drvdata(dev);
return sysfs_emit(buf, "%s\n", ctrl->ops->name);
}
static DEVICE_ATTR(transport, S_IRUGO, nvme_sysfs_show_transport, NULL);
static ssize_t nvme_sysfs_show_state(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct nvme_ctrl *ctrl = dev_get_drvdata(dev);
static const char *const state_name[] = {
[NVME_CTRL_NEW] = "new",
[NVME_CTRL_LIVE] = "live",
[NVME_CTRL_RESETTING] = "resetting",
[NVME_CTRL_CONNECTING] = "connecting",
[NVME_CTRL_DELETING] = "deleting",
[NVME_CTRL_DELETING_NOIO]= "deleting (no IO)",
[NVME_CTRL_DEAD] = "dead",
};
if ((unsigned)ctrl->state < ARRAY_SIZE(state_name) &&
state_name[ctrl->state])
return sysfs_emit(buf, "%s\n", state_name[ctrl->state]);
return sysfs_emit(buf, "unknown state\n");
}
static DEVICE_ATTR(state, S_IRUGO, nvme_sysfs_show_state, NULL);
static ssize_t nvme_sysfs_show_subsysnqn(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct nvme_ctrl *ctrl = dev_get_drvdata(dev);
return sysfs_emit(buf, "%s\n", ctrl->subsys->subnqn);
}
static DEVICE_ATTR(subsysnqn, S_IRUGO, nvme_sysfs_show_subsysnqn, NULL);
static ssize_t nvme_sysfs_show_hostnqn(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct nvme_ctrl *ctrl = dev_get_drvdata(dev);
return sysfs_emit(buf, "%s\n", ctrl->opts->host->nqn);
}
static DEVICE_ATTR(hostnqn, S_IRUGO, nvme_sysfs_show_hostnqn, NULL);
static ssize_t nvme_sysfs_show_hostid(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct nvme_ctrl *ctrl = dev_get_drvdata(dev);
return sysfs_emit(buf, "%pU\n", &ctrl->opts->host->id);
}
static DEVICE_ATTR(hostid, S_IRUGO, nvme_sysfs_show_hostid, NULL);
static ssize_t nvme_sysfs_show_address(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct nvme_ctrl *ctrl = dev_get_drvdata(dev);
return ctrl->ops->get_address(ctrl, buf, PAGE_SIZE);
}
static DEVICE_ATTR(address, S_IRUGO, nvme_sysfs_show_address, NULL);
static ssize_t nvme_ctrl_loss_tmo_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct nvme_ctrl *ctrl = dev_get_drvdata(dev);
struct nvmf_ctrl_options *opts = ctrl->opts;
if (ctrl->opts->max_reconnects == -1)
return sysfs_emit(buf, "off\n");
return sysfs_emit(buf, "%d\n",
opts->max_reconnects * opts->reconnect_delay);
}
static ssize_t nvme_ctrl_loss_tmo_store(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
struct nvme_ctrl *ctrl = dev_get_drvdata(dev);
struct nvmf_ctrl_options *opts = ctrl->opts;
int ctrl_loss_tmo, err;
err = kstrtoint(buf, 10, &ctrl_loss_tmo);
if (err)
return -EINVAL;
if (ctrl_loss_tmo < 0)
opts->max_reconnects = -1;
else
opts->max_reconnects = DIV_ROUND_UP(ctrl_loss_tmo,
opts->reconnect_delay);
return count;
}
static DEVICE_ATTR(ctrl_loss_tmo, S_IRUGO | S_IWUSR,
nvme_ctrl_loss_tmo_show, nvme_ctrl_loss_tmo_store);
static ssize_t nvme_ctrl_reconnect_delay_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct nvme_ctrl *ctrl = dev_get_drvdata(dev);
if (ctrl->opts->reconnect_delay == -1)
return sysfs_emit(buf, "off\n");
return sysfs_emit(buf, "%d\n", ctrl->opts->reconnect_delay);
}
static ssize_t nvme_ctrl_reconnect_delay_store(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
struct nvme_ctrl *ctrl = dev_get_drvdata(dev);
unsigned int v;
int err;
err = kstrtou32(buf, 10, &v);
if (err)
return err;
ctrl->opts->reconnect_delay = v;
return count;
}
static DEVICE_ATTR(reconnect_delay, S_IRUGO | S_IWUSR,
nvme_ctrl_reconnect_delay_show, nvme_ctrl_reconnect_delay_store);
static ssize_t nvme_ctrl_fast_io_fail_tmo_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct nvme_ctrl *ctrl = dev_get_drvdata(dev);
if (ctrl->opts->fast_io_fail_tmo == -1)
return sysfs_emit(buf, "off\n");
return sysfs_emit(buf, "%d\n", ctrl->opts->fast_io_fail_tmo);
}
static ssize_t nvme_ctrl_fast_io_fail_tmo_store(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
struct nvme_ctrl *ctrl = dev_get_drvdata(dev);
struct nvmf_ctrl_options *opts = ctrl->opts;
int fast_io_fail_tmo, err;
err = kstrtoint(buf, 10, &fast_io_fail_tmo);
if (err)
return -EINVAL;
if (fast_io_fail_tmo < 0)
opts->fast_io_fail_tmo = -1;
else
opts->fast_io_fail_tmo = fast_io_fail_tmo;
return count;
}
static DEVICE_ATTR(fast_io_fail_tmo, S_IRUGO | S_IWUSR,
nvme_ctrl_fast_io_fail_tmo_show, nvme_ctrl_fast_io_fail_tmo_store);
static ssize_t cntrltype_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
static const char * const type[] = {
[NVME_CTRL_IO] = "io\n",
[NVME_CTRL_DISC] = "discovery\n",
[NVME_CTRL_ADMIN] = "admin\n",
};
struct nvme_ctrl *ctrl = dev_get_drvdata(dev);
if (ctrl->cntrltype > NVME_CTRL_ADMIN || !type[ctrl->cntrltype])
return sysfs_emit(buf, "reserved\n");
return sysfs_emit(buf, type[ctrl->cntrltype]);
}
static DEVICE_ATTR_RO(cntrltype);
static ssize_t dctype_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
static const char * const type[] = {
[NVME_DCTYPE_NOT_REPORTED] = "none\n",
[NVME_DCTYPE_DDC] = "ddc\n",
[NVME_DCTYPE_CDC] = "cdc\n",
};
struct nvme_ctrl *ctrl = dev_get_drvdata(dev);
if (ctrl->dctype > NVME_DCTYPE_CDC || !type[ctrl->dctype])
return sysfs_emit(buf, "reserved\n");
return sysfs_emit(buf, type[ctrl->dctype]);
}
static DEVICE_ATTR_RO(dctype);
#ifdef CONFIG_NVME_AUTH
static ssize_t nvme_ctrl_dhchap_secret_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct nvme_ctrl *ctrl = dev_get_drvdata(dev);
struct nvmf_ctrl_options *opts = ctrl->opts;
if (!opts->dhchap_secret)
return sysfs_emit(buf, "none\n");
return sysfs_emit(buf, "%s\n", opts->dhchap_secret);
}
static ssize_t nvme_ctrl_dhchap_secret_store(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
struct nvme_ctrl *ctrl = dev_get_drvdata(dev);
struct nvmf_ctrl_options *opts = ctrl->opts;
char *dhchap_secret;
if (!ctrl->opts->dhchap_secret)
return -EINVAL;
if (count < 7)
return -EINVAL;
if (memcmp(buf, "DHHC-1:", 7))
return -EINVAL;
dhchap_secret = kzalloc(count + 1, GFP_KERNEL);
if (!dhchap_secret)
return -ENOMEM;
memcpy(dhchap_secret, buf, count);
nvme_auth_stop(ctrl);
if (strcmp(dhchap_secret, opts->dhchap_secret)) {
struct nvme_dhchap_key *key, *host_key;
int ret;
ret = nvme_auth_generate_key(dhchap_secret, &key);
if (ret) {
kfree(dhchap_secret);
return ret;
}
kfree(opts->dhchap_secret);
opts->dhchap_secret = dhchap_secret;
host_key = ctrl->host_key;
mutex_lock(&ctrl->dhchap_auth_mutex);
ctrl->host_key = key;
mutex_unlock(&ctrl->dhchap_auth_mutex);
nvme_auth_free_key(host_key);
} else
kfree(dhchap_secret);
/* Start re-authentication */
dev_info(ctrl->device, "re-authenticating controller\n");
queue_work(nvme_wq, &ctrl->dhchap_auth_work);
return count;
}
static DEVICE_ATTR(dhchap_secret, S_IRUGO | S_IWUSR,
nvme_ctrl_dhchap_secret_show, nvme_ctrl_dhchap_secret_store);
static ssize_t nvme_ctrl_dhchap_ctrl_secret_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct nvme_ctrl *ctrl = dev_get_drvdata(dev);
struct nvmf_ctrl_options *opts = ctrl->opts;
if (!opts->dhchap_ctrl_secret)
return sysfs_emit(buf, "none\n");
return sysfs_emit(buf, "%s\n", opts->dhchap_ctrl_secret);
}
static ssize_t nvme_ctrl_dhchap_ctrl_secret_store(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
struct nvme_ctrl *ctrl = dev_get_drvdata(dev);
struct nvmf_ctrl_options *opts = ctrl->opts;
char *dhchap_secret;
if (!ctrl->opts->dhchap_ctrl_secret)
return -EINVAL;
if (count < 7)
return -EINVAL;
if (memcmp(buf, "DHHC-1:", 7))
return -EINVAL;
dhchap_secret = kzalloc(count + 1, GFP_KERNEL);
if (!dhchap_secret)
return -ENOMEM;
memcpy(dhchap_secret, buf, count);
nvme_auth_stop(ctrl);
if (strcmp(dhchap_secret, opts->dhchap_ctrl_secret)) {
struct nvme_dhchap_key *key, *ctrl_key;
int ret;
ret = nvme_auth_generate_key(dhchap_secret, &key);
if (ret) {
kfree(dhchap_secret);
return ret;
}
kfree(opts->dhchap_ctrl_secret);
opts->dhchap_ctrl_secret = dhchap_secret;
ctrl_key = ctrl->ctrl_key;
mutex_lock(&ctrl->dhchap_auth_mutex);
ctrl->ctrl_key = key;
mutex_unlock(&ctrl->dhchap_auth_mutex);
nvme_auth_free_key(ctrl_key);
} else
kfree(dhchap_secret);
/* Start re-authentication */
dev_info(ctrl->device, "re-authenticating controller\n");
queue_work(nvme_wq, &ctrl->dhchap_auth_work);
return count;
}
static DEVICE_ATTR(dhchap_ctrl_secret, S_IRUGO | S_IWUSR,
nvme_ctrl_dhchap_ctrl_secret_show, nvme_ctrl_dhchap_ctrl_secret_store);
#endif
static struct attribute *nvme_dev_attrs[] = {
&dev_attr_reset_controller.attr,
&dev_attr_rescan_controller.attr,
&dev_attr_model.attr,
&dev_attr_serial.attr,
&dev_attr_firmware_rev.attr,
&dev_attr_cntlid.attr,
&dev_attr_delete_controller.attr,
&dev_attr_transport.attr,
&dev_attr_subsysnqn.attr,
&dev_attr_address.attr,
&dev_attr_state.attr,
&dev_attr_numa_node.attr,
&dev_attr_queue_count.attr,
&dev_attr_sqsize.attr,
&dev_attr_hostnqn.attr,
&dev_attr_hostid.attr,
&dev_attr_ctrl_loss_tmo.attr,
&dev_attr_reconnect_delay.attr,
&dev_attr_fast_io_fail_tmo.attr,
&dev_attr_kato.attr,
&dev_attr_cntrltype.attr,
&dev_attr_dctype.attr,
#ifdef CONFIG_NVME_AUTH
&dev_attr_dhchap_secret.attr,
&dev_attr_dhchap_ctrl_secret.attr,
#endif
NULL
};
static umode_t nvme_dev_attrs_are_visible(struct kobject *kobj,
struct attribute *a, int n)
{
struct device *dev = container_of(kobj, struct device, kobj);
struct nvme_ctrl *ctrl = dev_get_drvdata(dev);
if (a == &dev_attr_delete_controller.attr && !ctrl->ops->delete_ctrl)
return 0;
if (a == &dev_attr_address.attr && !ctrl->ops->get_address)
return 0;
if (a == &dev_attr_hostnqn.attr && !ctrl->opts)
return 0;
if (a == &dev_attr_hostid.attr && !ctrl->opts)
return 0;
if (a == &dev_attr_ctrl_loss_tmo.attr && !ctrl->opts)
return 0;
if (a == &dev_attr_reconnect_delay.attr && !ctrl->opts)
return 0;
if (a == &dev_attr_fast_io_fail_tmo.attr && !ctrl->opts)
return 0;
#ifdef CONFIG_NVME_AUTH
if (a == &dev_attr_dhchap_secret.attr && !ctrl->opts)
return 0;
if (a == &dev_attr_dhchap_ctrl_secret.attr && !ctrl->opts)
return 0;
#endif
return a->mode;
}
const struct attribute_group nvme_dev_attrs_group = {
.attrs = nvme_dev_attrs,
.is_visible = nvme_dev_attrs_are_visible,
};
EXPORT_SYMBOL_GPL(nvme_dev_attrs_group);
const struct attribute_group *nvme_dev_attr_groups[] = {
&nvme_dev_attrs_group,
NULL,
};
#define SUBSYS_ATTR_RO(_name, _mode, _show) \
struct device_attribute subsys_attr_##_name = \
__ATTR(_name, _mode, _show, NULL)
static ssize_t nvme_subsys_show_nqn(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct nvme_subsystem *subsys =
container_of(dev, struct nvme_subsystem, dev);
return sysfs_emit(buf, "%s\n", subsys->subnqn);
}
static SUBSYS_ATTR_RO(subsysnqn, S_IRUGO, nvme_subsys_show_nqn);
static ssize_t nvme_subsys_show_type(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct nvme_subsystem *subsys =
container_of(dev, struct nvme_subsystem, dev);
switch (subsys->subtype) {
case NVME_NQN_DISC:
return sysfs_emit(buf, "discovery\n");
case NVME_NQN_NVME:
return sysfs_emit(buf, "nvm\n");
default:
return sysfs_emit(buf, "reserved\n");
}
}
static SUBSYS_ATTR_RO(subsystype, S_IRUGO, nvme_subsys_show_type);
#define nvme_subsys_show_str_function(field) \
static ssize_t subsys_##field##_show(struct device *dev, \
struct device_attribute *attr, char *buf) \
{ \
struct nvme_subsystem *subsys = \
container_of(dev, struct nvme_subsystem, dev); \
return sysfs_emit(buf, "%.*s\n", \
(int)sizeof(subsys->field), subsys->field); \
} \
static SUBSYS_ATTR_RO(field, S_IRUGO, subsys_##field##_show);
nvme_subsys_show_str_function(model);
nvme_subsys_show_str_function(serial);
nvme_subsys_show_str_function(firmware_rev);
static struct attribute *nvme_subsys_attrs[] = {
&subsys_attr_model.attr,
&subsys_attr_serial.attr,
&subsys_attr_firmware_rev.attr,
&subsys_attr_subsysnqn.attr,
&subsys_attr_subsystype.attr,
#ifdef CONFIG_NVME_MULTIPATH
&subsys_attr_iopolicy.attr,
#endif
NULL,
};
static const struct attribute_group nvme_subsys_attrs_group = {
.attrs = nvme_subsys_attrs,
};
const struct attribute_group *nvme_subsys_attrs_groups[] = {
&nvme_subsys_attrs_group,
NULL,
};

90
drivers/nvme/host/tcp.c
View File

@ -1802,58 +1802,12 @@ out_free_queues:
return ret; return ret;
} }
static unsigned int nvme_tcp_nr_io_queues(struct nvme_ctrl *ctrl)
{
unsigned int nr_io_queues;
nr_io_queues = min(ctrl->opts->nr_io_queues, num_online_cpus());
nr_io_queues += min(ctrl->opts->nr_write_queues, num_online_cpus());
nr_io_queues += min(ctrl->opts->nr_poll_queues, num_online_cpus());
return nr_io_queues;
}
static void nvme_tcp_set_io_queues(struct nvme_ctrl *nctrl,
unsigned int nr_io_queues)
{
struct nvme_tcp_ctrl *ctrl = to_tcp_ctrl(nctrl);
struct nvmf_ctrl_options *opts = nctrl->opts;
if (opts->nr_write_queues && opts->nr_io_queues < nr_io_queues) {
/*
* separate read/write queues
* hand out dedicated default queues only after we have
* sufficient read queues.
*/
ctrl->io_queues[HCTX_TYPE_READ] = opts->nr_io_queues;
nr_io_queues -= ctrl->io_queues[HCTX_TYPE_READ];
ctrl->io_queues[HCTX_TYPE_DEFAULT] =
min(opts->nr_write_queues, nr_io_queues);
nr_io_queues -= ctrl->io_queues[HCTX_TYPE_DEFAULT];
} else {
/*
* shared read/write queues
* either no write queues were requested, or we don't have
* sufficient queue count to have dedicated default queues.
*/
ctrl->io_queues[HCTX_TYPE_DEFAULT] =
min(opts->nr_io_queues, nr_io_queues);
nr_io_queues -= ctrl->io_queues[HCTX_TYPE_DEFAULT];
}
if (opts->nr_poll_queues && nr_io_queues) {
/* map dedicated poll queues only if we have queues left */
ctrl->io_queues[HCTX_TYPE_POLL] =
min(opts->nr_poll_queues, nr_io_queues);
}
}
static int nvme_tcp_alloc_io_queues(struct nvme_ctrl *ctrl) static int nvme_tcp_alloc_io_queues(struct nvme_ctrl *ctrl)
{ {
unsigned int nr_io_queues; unsigned int nr_io_queues;
int ret; int ret;
nr_io_queues = nvme_tcp_nr_io_queues(ctrl); nr_io_queues = nvmf_nr_io_queues(ctrl->opts);
ret = nvme_set_queue_count(ctrl, &nr_io_queues); ret = nvme_set_queue_count(ctrl, &nr_io_queues);
if (ret) if (ret)
return ret; return ret;
@ -1868,8 +1822,8 @@ static int nvme_tcp_alloc_io_queues(struct nvme_ctrl *ctrl)
dev_info(ctrl->device, dev_info(ctrl->device,
"creating %d I/O queues.\n", nr_io_queues); "creating %d I/O queues.\n", nr_io_queues);
nvme_tcp_set_io_queues(ctrl, nr_io_queues); nvmf_set_io_queues(ctrl->opts, nr_io_queues,
to_tcp_ctrl(ctrl)->io_queues);
return __nvme_tcp_alloc_io_queues(ctrl); return __nvme_tcp_alloc_io_queues(ctrl);
} }
@ -2449,44 +2403,8 @@ static blk_status_t nvme_tcp_queue_rq(struct blk_mq_hw_ctx *hctx,
static void nvme_tcp_map_queues(struct blk_mq_tag_set *set) static void nvme_tcp_map_queues(struct blk_mq_tag_set *set)
{ {
struct nvme_tcp_ctrl *ctrl = to_tcp_ctrl(set->driver_data); struct nvme_tcp_ctrl *ctrl = to_tcp_ctrl(set->driver_data);
struct nvmf_ctrl_options *opts = ctrl->ctrl.opts;
if (opts->nr_write_queues && ctrl->io_queues[HCTX_TYPE_READ]) { nvmf_map_queues(set, &ctrl->ctrl, ctrl->io_queues);
/* separate read/write queues */
set->map[HCTX_TYPE_DEFAULT].nr_queues =
ctrl->io_queues[HCTX_TYPE_DEFAULT];
set->map[HCTX_TYPE_DEFAULT].queue_offset = 0;
set->map[HCTX_TYPE_READ].nr_queues =
ctrl->io_queues[HCTX_TYPE_READ];
set->map[HCTX_TYPE_READ].queue_offset =
ctrl->io_queues[HCTX_TYPE_DEFAULT];
} else {
/* shared read/write queues */
set->map[HCTX_TYPE_DEFAULT].nr_queues =
ctrl->io_queues[HCTX_TYPE_DEFAULT];
set->map[HCTX_TYPE_DEFAULT].queue_offset = 0;
set->map[HCTX_TYPE_READ].nr_queues =
ctrl->io_queues[HCTX_TYPE_DEFAULT];
set->map[HCTX_TYPE_READ].queue_offset = 0;
}
blk_mq_map_queues(&set->map[HCTX_TYPE_DEFAULT]);
blk_mq_map_queues(&set->map[HCTX_TYPE_READ]);
if (opts->nr_poll_queues && ctrl->io_queues[HCTX_TYPE_POLL]) {
/* map dedicated poll queues only if we have queues left */
set->map[HCTX_TYPE_POLL].nr_queues =
ctrl->io_queues[HCTX_TYPE_POLL];
set->map[HCTX_TYPE_POLL].queue_offset =
ctrl->io_queues[HCTX_TYPE_DEFAULT] +
ctrl->io_queues[HCTX_TYPE_READ];
blk_mq_map_queues(&set->map[HCTX_TYPE_POLL]);
}
dev_info(ctrl->ctrl.device,
"mapped %d/%d/%d default/read/poll queues.\n",
ctrl->io_queues[HCTX_TYPE_DEFAULT],
ctrl->io_queues[HCTX_TYPE_READ],
ctrl->io_queues[HCTX_TYPE_POLL]);
} }
static int nvme_tcp_poll(struct blk_mq_hw_ctx *hctx, struct io_comp_batch *iob) static int nvme_tcp_poll(struct blk_mq_hw_ctx *hctx, struct io_comp_batch *iob)

13
drivers/nvme/target/fabrics-cmd-auth.c
View File

@ -295,13 +295,11 @@ void nvmet_execute_auth_send(struct nvmet_req *req)
status = 0; status = 0;
} }
goto done_kfree; goto done_kfree;
break;
case NVME_AUTH_DHCHAP_MESSAGE_SUCCESS2: case NVME_AUTH_DHCHAP_MESSAGE_SUCCESS2:
req->sq->authenticated = true; req->sq->authenticated = true;
pr_debug("%s: ctrl %d qid %d ctrl authenticated\n", pr_debug("%s: ctrl %d qid %d ctrl authenticated\n",
__func__, ctrl->cntlid, req->sq->qid); __func__, ctrl->cntlid, req->sq->qid);
goto done_kfree; goto done_kfree;
break;
case NVME_AUTH_DHCHAP_MESSAGE_FAILURE2: case NVME_AUTH_DHCHAP_MESSAGE_FAILURE2:
status = nvmet_auth_failure2(d); status = nvmet_auth_failure2(d);
if (status) { if (status) {
@ -312,7 +310,6 @@ void nvmet_execute_auth_send(struct nvmet_req *req)
status = 0; status = 0;
} }
goto done_kfree; goto done_kfree;
break;
default: default:
req->sq->dhchap_status = req->sq->dhchap_status =
NVME_AUTH_DHCHAP_FAILURE_INCORRECT_MESSAGE; NVME_AUTH_DHCHAP_FAILURE_INCORRECT_MESSAGE;
@ -320,7 +317,6 @@ void nvmet_execute_auth_send(struct nvmet_req *req)
NVME_AUTH_DHCHAP_MESSAGE_FAILURE2; NVME_AUTH_DHCHAP_MESSAGE_FAILURE2;
req->sq->authenticated = false; req->sq->authenticated = false;
goto done_kfree; goto done_kfree;
break;
} }
done_failure1: done_failure1:
req->sq->dhchap_status = NVME_AUTH_DHCHAP_FAILURE_INCORRECT_MESSAGE; req->sq->dhchap_status = NVME_AUTH_DHCHAP_FAILURE_INCORRECT_MESSAGE;
@ -483,15 +479,6 @@ void nvmet_execute_auth_receive(struct nvmet_req *req)
status = NVME_SC_INTERNAL; status = NVME_SC_INTERNAL;
break; break;
} }
if (status) {
req->sq->dhchap_status = status;
nvmet_auth_failure1(req, d, al);
pr_warn("ctrl %d qid %d: challenge status (%x)\n",
ctrl->cntlid, req->sq->qid,
req->sq->dhchap_status);
status = 0;
break;
}
req->sq->dhchap_step = NVME_AUTH_DHCHAP_MESSAGE_REPLY; req->sq->dhchap_step = NVME_AUTH_DHCHAP_MESSAGE_REPLY;
break; break;
case NVME_AUTH_DHCHAP_MESSAGE_SUCCESS1: case NVME_AUTH_DHCHAP_MESSAGE_SUCCESS1:

5
drivers/nvme/target/fcloop.c
View File

@ -645,8 +645,6 @@ fcloop_fcp_recv_work(struct work_struct *work)
} }
if (ret) if (ret)
fcloop_call_host_done(fcpreq, tfcp_req, ret); fcloop_call_host_done(fcpreq, tfcp_req, ret);
return;
} }
static void static void
@ -1168,7 +1166,8 @@ __wait_localport_unreg(struct fcloop_lport *lport)
ret = nvme_fc_unregister_localport(lport->localport); ret = nvme_fc_unregister_localport(lport->localport);
wait_for_completion(&lport->unreg_done); if (!ret)
wait_for_completion(&lport->unreg_done);
kfree(lport); kfree(lport);

2
drivers/nvme/target/nvmet.h
View File

@ -109,8 +109,8 @@ struct nvmet_sq {
u32 sqhd; u32 sqhd;
bool sqhd_disabled; bool sqhd_disabled;
#ifdef CONFIG_NVME_TARGET_AUTH #ifdef CONFIG_NVME_TARGET_AUTH
struct delayed_work auth_expired_work;
bool authenticated; bool authenticated;
struct delayed_work auth_expired_work;
u16 dhchap_tid; u16 dhchap_tid;
u16 dhchap_status; u16 dhchap_status;
int dhchap_step; int dhchap_step;

10
include/linux/nvme-fc-driver.h
View File

@ -185,7 +185,6 @@ enum nvmefc_fcp_datadir {
* @first_sgl: memory for 1st scatter/gather list segment for payload data * @first_sgl: memory for 1st scatter/gather list segment for payload data
* @sg_cnt: number of elements in the scatter/gather list * @sg_cnt: number of elements in the scatter/gather list
* @io_dir: direction of the FCP request (see NVMEFC_FCP_xxx) * @io_dir: direction of the FCP request (see NVMEFC_FCP_xxx)
* @sqid: The nvme SQID the command is being issued on
* @done: The callback routine the LLDD is to invoke upon completion of * @done: The callback routine the LLDD is to invoke upon completion of
* the FCP operation. req argument is the pointer to the original * the FCP operation. req argument is the pointer to the original
* FCP IO operation. * FCP IO operation.
@ -194,12 +193,13 @@ enum nvmefc_fcp_datadir {
* while processing the operation. The length of the buffer * while processing the operation. The length of the buffer
* corresponds to the fcprqst_priv_sz value specified in the * corresponds to the fcprqst_priv_sz value specified in the
* nvme_fc_port_template supplied by the LLDD. * nvme_fc_port_template supplied by the LLDD.
* @sqid: The nvme SQID the command is being issued on
* *
* Values set by the LLDD indicating completion status of the FCP operation. * Values set by the LLDD indicating completion status of the FCP operation.
* Must be set prior to calling the done() callback. * Must be set prior to calling the done() callback.
* @rcv_rsplen: length, in bytes, of the FCP RSP IU received.
* @transferred_length: amount of payload data, in bytes, that were * @transferred_length: amount of payload data, in bytes, that were
* transferred. Should equal payload_length on success. * transferred. Should equal payload_length on success.
* @rcv_rsplen: length, in bytes, of the FCP RSP IU received.
* @status: Completion status of the FCP operation. must be 0 upon success, * @status: Completion status of the FCP operation. must be 0 upon success,
* negative errno value upon failure (ex: -EIO). Note: this is * negative errno value upon failure (ex: -EIO). Note: this is
* NOT a reflection of the NVME CQE completion status. Only the * NOT a reflection of the NVME CQE completion status. Only the
@ -219,14 +219,14 @@ struct nvmefc_fcp_req {
int sg_cnt; int sg_cnt;
enum nvmefc_fcp_datadir io_dir; enum nvmefc_fcp_datadir io_dir;
__le16 sqid;
void (*done)(struct nvmefc_fcp_req *req); void (*done)(struct nvmefc_fcp_req *req);
void *private; void *private;
u32 transferred_length; __le16 sqid;
u16 rcv_rsplen; u16 rcv_rsplen;
u32 transferred_length;
u32 status; u32 status;
} __aligned(sizeof(u64)); /* alignment for other things alloc'd with */ } __aligned(sizeof(u64)); /* alignment for other things alloc'd with */