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| author | Ming Lin <ming.l@ssi.samsung.com> | 2016-02-26 13:24:19 -0800 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2016-02-29 12:31:27 -0700 |
| commit | 931e1c2204c6d00c11c5c1e2e1c20b5ca41f292d (patch) | |
| tree | 125642bcc0365e00100cfe62c8bed65f32920e25 | |
| parent | 1cb3cce5eb9de335330c8a147e47e3359a51a8b5 (diff) | |
| download | linux-931e1c2204c6d00c11c5c1e2e1c20b5ca41f292d.tar.bz2 | |
nvme: expose cntlid in sysfs
For NVMe over Fabrics, the cntlid will be used by systemd/udev to
create link to the device, for example,
/dev/disk/by-path/<fabrics-info>-<cntlid>-<namespace> -> /dev/nvme0n1
Signed-off-by: Ming Lin <ming.l@ssi.samsung.com>
Reviewed-by: Keith Busch <keith.busch@intel.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Sagi Grimberg <sagig@mellanox.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
| -rw-r--r-- | drivers/nvme/host/core.c | 20 | ||||
| -rw-r--r-- | drivers/nvme/host/nvme.h | 1 |
2 files changed, 17 insertions, 4 deletions
diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c index 66fd3d9e4d47..f08dccee8143 100644 --- a/drivers/nvme/host/core.c +++ b/drivers/nvme/host/core.c @@ -912,6 +912,7 @@ int nvme_init_identify(struct nvme_ctrl *ctrl) ctrl->oncs = le16_to_cpup(&id->oncs); atomic_set(&ctrl->abort_limit, id->acl + 1); ctrl->vwc = id->vwc; + ctrl->cntlid = le16_to_cpup(&id->cntlid); memcpy(ctrl->serial, id->sn, sizeof(id->sn)); memcpy(ctrl->model, id->mn, sizeof(id->mn)); memcpy(ctrl->firmware_rev, id->fr, sizeof(id->fr)); @@ -1099,7 +1100,7 @@ static const struct attribute_group nvme_ns_attr_group = { .is_visible = nvme_attrs_are_visible, }; -#define nvme_show_function(field) \ +#define nvme_show_str_function(field) \ static ssize_t field##_show(struct device *dev, \ struct device_attribute *attr, char *buf) \ { \ @@ -1108,15 +1109,26 @@ static ssize_t field##_show(struct device *dev, \ } \ static DEVICE_ATTR(field, S_IRUGO, field##_show, NULL); -nvme_show_function(model); -nvme_show_function(serial); -nvme_show_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 sprintf(buf, "%d\n", ctrl->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); +nvme_show_int_function(cntlid); static struct attribute *nvme_dev_attrs[] = { &dev_attr_reset_controller.attr, &dev_attr_model.attr, &dev_attr_serial.attr, &dev_attr_firmware_rev.attr, + &dev_attr_cntlid.attr, NULL }; diff --git a/drivers/nvme/host/nvme.h b/drivers/nvme/host/nvme.h index 2ac7539fdd17..9b71fa8c75e4 100644 --- a/drivers/nvme/host/nvme.h +++ b/drivers/nvme/host/nvme.h @@ -77,6 +77,7 @@ struct nvme_ctrl { char serial[20]; char model[40]; char firmware_rev[8]; + int cntlid; u32 ctrl_config; |