diff options
Diffstat (limited to 'drivers/scsi/fcoe/fcoe_sysfs.c')
| -rw-r--r-- | drivers/scsi/fcoe/fcoe_sysfs.c | 214 |
1 files changed, 168 insertions, 46 deletions
diff --git a/drivers/scsi/fcoe/fcoe_sysfs.c b/drivers/scsi/fcoe/fcoe_sysfs.c index 5e751689a08..045c4e11ee5 100644 --- a/drivers/scsi/fcoe/fcoe_sysfs.c +++ b/drivers/scsi/fcoe/fcoe_sysfs.c @@ -21,8 +21,17 @@ #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 + * <scsi/libfcoe.h> otherwise non-netdev based fcoe solutions would have + * have to include more than fcoe_sysfs.h. + */ +#include "libfcoe.h" static atomic_t ctlr_num; static atomic_t fcf_num; @@ -71,6 +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) \ @@ -210,25 +221,34 @@ static ssize_t show_fcoe_fcf_device_##field(struct device *dev, \ #define fcoe_enum_name_search(title, table_type, table) \ static const char *get_fcoe_##title##_name(enum table_type table_key) \ { \ - int i; \ - char *name = NULL; \ - \ - for (i = 0; i < ARRAY_SIZE(table); i++) { \ - if (table[i].value == table_key) { \ - name = table[i].name; \ - break; \ - } \ - } \ - return name; \ + if (table_key < 0 || table_key >= ARRAY_SIZE(table)) \ + return NULL; \ + return table[table_key]; \ } -static struct { - enum fcf_state value; - char *name; -} fcf_state_names[] = { - { FCOE_FCF_STATE_UNKNOWN, "Unknown" }, - { FCOE_FCF_STATE_DISCONNECTED, "Disconnected" }, - { FCOE_FCF_STATE_CONNECTED, "Connected" }, +static char *fip_conn_type_names[] = { + [ FIP_CONN_TYPE_UNKNOWN ] = "Unknown", + [ FIP_CONN_TYPE_FABRIC ] = "Fabric", + [ FIP_CONN_TYPE_VN2VN ] = "VN2VN", +}; +fcoe_enum_name_search(ctlr_mode, fip_conn_type, fip_conn_type_names) + +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", + [ FCOE_FCF_STATE_DISCONNECTED ] = "Disconnected", + [ FCOE_FCF_STATE_CONNECTED ] = "Connected", }; fcoe_enum_name_search(fcf_state, fcf_state, fcf_state_names) #define FCOE_FCF_STATE_MAX_NAMELEN 50 @@ -246,17 +266,7 @@ static ssize_t show_fcf_state(struct device *dev, } static FCOE_DEVICE_ATTR(fcf, state, S_IRUGO, show_fcf_state, NULL); -static struct { - enum fip_conn_type value; - char *name; -} fip_conn_type_names[] = { - { FIP_CONN_TYPE_UNKNOWN, "Unknown" }, - { FIP_CONN_TYPE_FABRIC, "Fabric" }, - { 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 - +#define FCOE_MAX_MODENAME_LEN 20 static ssize_t show_ctlr_mode(struct device *dev, struct device_attribute *attr, char *buf) @@ -264,17 +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 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.\n"); + return -EBUSY; + case FCOE_CTLR_DISABLED: + if (!ctlr->f->set_fcoe_ctlr_mode) { + LIBFCOE_SYSFS_DBG(ctlr, + "Mode change not supported by LLD.\n"); + return -ENOTSUPP; + } + + ctlr->mode = fcoe_parse_mode(mode); + if (ctlr->mode == FIP_CONN_TYPE_UNKNOWN) { + LIBFCOE_SYSFS_DBG(ctlr, "Unknown mode %s provided.\n", + buf); + return -EINVAL; + } + + ctlr->f->set_fcoe_ctlr_mode(ctlr); + LIBFCOE_SYSFS_DBG(ctlr, "Mode changed to %s.\n", buf); + + return count; + case FCOE_CTLR_UNUSED: + default: + LIBFCOE_SYSFS_DBG(ctlr, "Mode change not supported.\n"); + 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, mode, S_IRUGO, - show_ctlr_mode, NULL); + +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, @@ -359,6 +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, }; @@ -397,7 +507,7 @@ static const struct attribute_group *fcoe_fcf_attr_groups[] = { NULL, }; -struct bus_type fcoe_bus_type; +static struct bus_type fcoe_bus_type; static int fcoe_bus_match(struct device *dev, struct device_driver *drv) @@ -431,28 +541,39 @@ static void fcoe_fcf_device_release(struct device *dev) kfree(fcf); } -struct device_type fcoe_ctlr_device_type = { +static struct device_type fcoe_ctlr_device_type = { .name = "fcoe_ctlr", .groups = fcoe_ctlr_attr_groups, .release = fcoe_ctlr_device_release, }; -struct device_type fcoe_fcf_device_type = { +static struct device_type fcoe_fcf_device_type = { .name = "fcoe_fcf", .groups = fcoe_fcf_attr_groups, .release = fcoe_fcf_device_release, }; -struct bus_type fcoe_bus_type = { +static BUS_ATTR(ctlr_create, S_IWUSR, NULL, fcoe_ctlr_create_store); +static BUS_ATTR(ctlr_destroy, S_IWUSR, NULL, fcoe_ctlr_destroy_store); + +static struct attribute *fcoe_bus_attrs[] = { + &bus_attr_ctlr_create.attr, + &bus_attr_ctlr_destroy.attr, + NULL, +}; +ATTRIBUTE_GROUPS(fcoe_bus); + +static struct bus_type fcoe_bus_type = { .name = "fcoe", .match = &fcoe_bus_match, + .bus_groups = fcoe_bus_groups, }; /** * fcoe_ctlr_device_flush_work() - Flush a FIP ctlr's workqueue * @ctlr: Pointer to the FIP ctlr whose workqueue is to be flushed */ -void fcoe_ctlr_device_flush_work(struct fcoe_ctlr_device *ctlr) +static void fcoe_ctlr_device_flush_work(struct fcoe_ctlr_device *ctlr) { if (!fcoe_ctlr_work_q(ctlr)) { printk(KERN_ERR @@ -473,8 +594,8 @@ void fcoe_ctlr_device_flush_work(struct fcoe_ctlr_device *ctlr) * Return value: * 1 on success / 0 already queued / < 0 for error */ -int fcoe_ctlr_device_queue_work(struct fcoe_ctlr_device *ctlr, - struct work_struct *work) +static int fcoe_ctlr_device_queue_work(struct fcoe_ctlr_device *ctlr, + struct work_struct *work) { if (unlikely(!fcoe_ctlr_work_q(ctlr))) { printk(KERN_ERR @@ -492,7 +613,7 @@ int fcoe_ctlr_device_queue_work(struct fcoe_ctlr_device *ctlr, * fcoe_ctlr_device_flush_devloss() - Flush a FIP ctlr's devloss workqueue * @ctlr: Pointer to FIP ctlr whose workqueue is to be flushed */ -void fcoe_ctlr_device_flush_devloss(struct fcoe_ctlr_device *ctlr) +static void fcoe_ctlr_device_flush_devloss(struct fcoe_ctlr_device *ctlr) { if (!fcoe_ctlr_devloss_work_q(ctlr)) { printk(KERN_ERR @@ -514,9 +635,9 @@ void fcoe_ctlr_device_flush_devloss(struct fcoe_ctlr_device *ctlr) * Return value: * 1 on success / 0 already queued / < 0 for error */ -int fcoe_ctlr_device_queue_devloss_work(struct fcoe_ctlr_device *ctlr, - struct delayed_work *work, - unsigned long delay) +static int fcoe_ctlr_device_queue_devloss_work(struct fcoe_ctlr_device *ctlr, + struct delayed_work *work, + unsigned long delay) { if (unlikely(!fcoe_ctlr_devloss_work_q(ctlr))) { printk(KERN_ERR @@ -536,7 +657,7 @@ static int fcoe_fcf_device_match(struct fcoe_fcf_device *new, if (new->switch_name == old->switch_name && new->fabric_name == old->fabric_name && new->fc_map == old->fc_map && - compare_ether_addr(new->mac, old->mac) == 0) + ether_addr_equal(new->mac, old->mac)) return 1; return 0; } @@ -566,6 +687,7 @@ 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; |