diff options
Diffstat (limited to 'drivers/scsi/fcoe/fcoe_sysfs.c')
| -rw-r--r-- | drivers/scsi/fcoe/fcoe_sysfs.c | 137 |
1 files changed, 130 insertions, 7 deletions
diff --git a/drivers/scsi/fcoe/fcoe_sysfs.c b/drivers/scsi/fcoe/fcoe_sysfs.c index 9c74374b53c..8c05ae017f5 100644 --- a/drivers/scsi/fcoe/fcoe_sysfs.c +++ b/drivers/scsi/fcoe/fcoe_sysfs.c @@ -21,8 +21,10 @@ #include <linux/types.h> #include <linux/kernel.h> #include <linux/etherdevice.h> +#include <linux/ctype.h> #include <scsi/fcoe_sysfs.h> +#include <scsi/libfcoe.h> /* * OK to include local libfcoe.h for debug_logging, but cannot include @@ -78,6 +80,8 @@ MODULE_PARM_DESC(fcf_dev_loss_tmo, ((x)->lesb.lesb_err_block) #define fcoe_ctlr_fcs_error(x) \ ((x)->lesb.lesb_fcs_error) +#define fcoe_ctlr_enabled(x) \ + ((x)->enabled) #define fcoe_fcf_state(x) \ ((x)->state) #define fcoe_fcf_fabric_name(x) \ @@ -228,7 +232,18 @@ static char *fip_conn_type_names[] = { [ FIP_CONN_TYPE_VN2VN ] = "VN2VN", }; fcoe_enum_name_search(ctlr_mode, fip_conn_type, fip_conn_type_names) -#define FCOE_CTLR_MODE_MAX_NAMELEN 50 + +static enum fip_conn_type fcoe_parse_mode(const char *buf) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(fip_conn_type_names); i++) { + if (strcasecmp(buf, fip_conn_type_names[i]) == 0) + return i; + } + + return FIP_CONN_TYPE_UNKNOWN; +} static char *fcf_state_names[] = { [ FCOE_FCF_STATE_UNKNOWN ] = "Unknown", @@ -259,17 +274,116 @@ static ssize_t show_ctlr_mode(struct device *dev, struct fcoe_ctlr_device *ctlr = dev_to_ctlr(dev); const char *name; - if (ctlr->f->get_fcoe_ctlr_mode) - ctlr->f->get_fcoe_ctlr_mode(ctlr); - name = get_fcoe_ctlr_mode_name(ctlr->mode); if (!name) return -EINVAL; - return snprintf(buf, FCOE_CTLR_MODE_MAX_NAMELEN, + return snprintf(buf, FCOE_MAX_MODENAME_LEN, "%s\n", name); } -static FCOE_DEVICE_ATTR(ctlr, mode, S_IRUGO, - show_ctlr_mode, NULL); + +static ssize_t store_ctlr_mode(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct fcoe_ctlr_device *ctlr = dev_to_ctlr(dev); + char mode[FCOE_MAX_MODENAME_LEN + 1]; + + if (count > FCOE_MAX_MODENAME_LEN) + return -EINVAL; + + strncpy(mode, buf, count); + + if (mode[count - 1] == '\n') + mode[count - 1] = '\0'; + else + mode[count] = '\0'; + + switch (ctlr->enabled) { + case FCOE_CTLR_ENABLED: + LIBFCOE_SYSFS_DBG(ctlr, "Cannot change mode when enabled."); + return -EBUSY; + case FCOE_CTLR_DISABLED: + if (!ctlr->f->set_fcoe_ctlr_mode) { + LIBFCOE_SYSFS_DBG(ctlr, + "Mode change not supported by LLD."); + return -ENOTSUPP; + } + + ctlr->mode = fcoe_parse_mode(mode); + if (ctlr->mode == FIP_CONN_TYPE_UNKNOWN) { + LIBFCOE_SYSFS_DBG(ctlr, + "Unknown mode %s provided.", buf); + return -EINVAL; + } + + ctlr->f->set_fcoe_ctlr_mode(ctlr); + LIBFCOE_SYSFS_DBG(ctlr, "Mode changed to %s.", buf); + + return count; + case FCOE_CTLR_UNUSED: + default: + LIBFCOE_SYSFS_DBG(ctlr, "Mode change not supported."); + return -ENOTSUPP; + }; +} + +static FCOE_DEVICE_ATTR(ctlr, mode, S_IRUGO | S_IWUSR, + show_ctlr_mode, store_ctlr_mode); + +static ssize_t store_ctlr_enabled(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct fcoe_ctlr_device *ctlr = dev_to_ctlr(dev); + int rc; + + switch (ctlr->enabled) { + case FCOE_CTLR_ENABLED: + if (*buf == '1') + return count; + ctlr->enabled = FCOE_CTLR_DISABLED; + break; + case FCOE_CTLR_DISABLED: + if (*buf == '0') + return count; + ctlr->enabled = FCOE_CTLR_ENABLED; + break; + case FCOE_CTLR_UNUSED: + return -ENOTSUPP; + }; + + rc = ctlr->f->set_fcoe_ctlr_enabled(ctlr); + if (rc) + return rc; + + return count; +} + +static char *ctlr_enabled_state_names[] = { + [ FCOE_CTLR_ENABLED ] = "1", + [ FCOE_CTLR_DISABLED ] = "0", +}; +fcoe_enum_name_search(ctlr_enabled_state, ctlr_enabled_state, + ctlr_enabled_state_names) +#define FCOE_CTLR_ENABLED_MAX_NAMELEN 50 + +static ssize_t show_ctlr_enabled_state(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct fcoe_ctlr_device *ctlr = dev_to_ctlr(dev); + const char *name; + + name = get_fcoe_ctlr_enabled_state_name(ctlr->enabled); + if (!name) + return -EINVAL; + return snprintf(buf, FCOE_CTLR_ENABLED_MAX_NAMELEN, + "%s\n", name); +} + +static FCOE_DEVICE_ATTR(ctlr, enabled, S_IRUGO | S_IWUSR, + show_ctlr_enabled_state, + store_ctlr_enabled); static ssize_t store_private_fcoe_ctlr_fcf_dev_loss_tmo(struct device *dev, @@ -354,6 +468,7 @@ static struct attribute_group fcoe_ctlr_lesb_attr_group = { static struct attribute *fcoe_ctlr_attrs[] = { &device_attr_fcoe_ctlr_fcf_dev_loss_tmo.attr, + &device_attr_fcoe_ctlr_enabled.attr, &device_attr_fcoe_ctlr_mode.attr, NULL, }; @@ -438,9 +553,16 @@ struct device_type fcoe_fcf_device_type = { .release = fcoe_fcf_device_release, }; +struct bus_attribute fcoe_bus_attr_group[] = { + __ATTR(ctlr_create, S_IWUSR, NULL, fcoe_ctlr_create_store), + __ATTR(ctlr_destroy, S_IWUSR, NULL, fcoe_ctlr_destroy_store), + __ATTR_NULL +}; + struct bus_type fcoe_bus_type = { .name = "fcoe", .match = &fcoe_bus_match, + .bus_attrs = fcoe_bus_attr_group, }; /** @@ -561,6 +683,7 @@ struct fcoe_ctlr_device *fcoe_ctlr_device_add(struct device *parent, ctlr->id = atomic_inc_return(&ctlr_num) - 1; ctlr->f = f; + ctlr->mode = FIP_CONN_TYPE_FABRIC; INIT_LIST_HEAD(&ctlr->fcfs); mutex_init(&ctlr->lock); ctlr->dev.parent = parent; 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