diff options
Diffstat (limited to 'drivers/uwb/wlp/sysfs.c')
| -rw-r--r-- | drivers/uwb/wlp/sysfs.c | 709 |
1 files changed, 709 insertions, 0 deletions
diff --git a/drivers/uwb/wlp/sysfs.c b/drivers/uwb/wlp/sysfs.c new file mode 100644 index 000000000000..1bb9b1f97d47 --- /dev/null +++ b/drivers/uwb/wlp/sysfs.c @@ -0,0 +1,709 @@ +/* + * WiMedia Logical Link Control Protocol (WLP) + * sysfs functions + * + * Copyright (C) 2007 Intel Corporation + * Reinette Chatre <reinette.chatre@intel.com> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License version + * 2 as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA + * 02110-1301, USA. + * + * + * FIXME: Docs + * + */ + +#include <linux/wlp.h> +#include "wlp-internal.h" + +static +size_t wlp_wss_wssid_e_print(char *buf, size_t bufsize, + struct wlp_wssid_e *wssid_e) +{ + size_t used = 0; + used += scnprintf(buf, bufsize, " WSS: "); + used += wlp_wss_uuid_print(buf + used, bufsize - used, + &wssid_e->wssid); + + if (wssid_e->info != NULL) { + used += scnprintf(buf + used, bufsize - used, " "); + used += uwb_mac_addr_print(buf + used, bufsize - used, + &wssid_e->info->bcast); + used += scnprintf(buf + used, bufsize - used, " %u %u %s\n", + wssid_e->info->accept_enroll, + wssid_e->info->sec_status, + wssid_e->info->name); + } + return used; +} + +/** + * Print out information learned from neighbor discovery + * + * Some fields being printed may not be included in the device discovery + * information (it is not mandatory). We are thus careful how the + * information is printed to ensure it is clear to the user what field is + * being referenced. + * The information being printed is for one time use - temporary storage is + * cleaned after it is printed. + * + * Ideally sysfs output should be on one line. The information printed here + * contain a few strings so it will be hard to parse if they are all + * printed on the same line - without agreeing on a standard field + * separator. + */ +static +ssize_t wlp_wss_neighborhood_print_remove(struct wlp *wlp, char *buf, + size_t bufsize) +{ + size_t used = 0; + struct wlp_neighbor_e *neighb; + struct wlp_wssid_e *wssid_e; + + mutex_lock(&wlp->nbmutex); + used = scnprintf(buf, bufsize, "#Neighbor information\n" + "#uuid dev_addr\n" + "# Device Name:\n# Model Name:\n# Manufacturer:\n" + "# Model Nr:\n# Serial:\n" + "# Pri Dev type: CategoryID OUI OUISubdiv " + "SubcategoryID\n" + "# WSS: WSSID WSS_name accept_enroll sec_status " + "bcast\n" + "# WSS: WSSID WSS_name accept_enroll sec_status " + "bcast\n\n"); + list_for_each_entry(neighb, &wlp->neighbors, node) { + if (bufsize - used <= 0) + goto out; + used += wlp_wss_uuid_print(buf + used, bufsize - used, + &neighb->uuid); + buf[used++] = ' '; + used += uwb_dev_addr_print(buf + used, bufsize - used, + &neighb->uwb_dev->dev_addr); + if (neighb->info != NULL) + used += scnprintf(buf + used, bufsize - used, + "\n Device Name: %s\n" + " Model Name: %s\n" + " Manufacturer:%s \n" + " Model Nr: %s\n" + " Serial: %s\n" + " Pri Dev type: " + "%u %02x:%02x:%02x %u %u\n", + neighb->info->name, + neighb->info->model_name, + neighb->info->manufacturer, + neighb->info->model_nr, + neighb->info->serial, + neighb->info->prim_dev_type.category, + neighb->info->prim_dev_type.OUI[0], + neighb->info->prim_dev_type.OUI[1], + neighb->info->prim_dev_type.OUI[2], + neighb->info->prim_dev_type.OUIsubdiv, + neighb->info->prim_dev_type.subID); + list_for_each_entry(wssid_e, &neighb->wssid, node) { + used += wlp_wss_wssid_e_print(buf + used, + bufsize - used, + wssid_e); + } + buf[used++] = '\n'; + wlp_remove_neighbor_tmp_info(neighb); + } + + +out: + mutex_unlock(&wlp->nbmutex); + return used; +} + + +/** + * Show properties of all WSS in neighborhood. + * + * Will trigger a complete discovery of WSS activated by this device and + * its neighbors. + */ +ssize_t wlp_neighborhood_show(struct wlp *wlp, char *buf) +{ + wlp_discover(wlp); + return wlp_wss_neighborhood_print_remove(wlp, buf, PAGE_SIZE); +} +EXPORT_SYMBOL_GPL(wlp_neighborhood_show); + +static +ssize_t __wlp_wss_properties_show(struct wlp_wss *wss, char *buf, + size_t bufsize) +{ + ssize_t result; + + result = wlp_wss_uuid_print(buf, bufsize, &wss->wssid); + result += scnprintf(buf + result, bufsize - result, " "); + result += uwb_mac_addr_print(buf + result, bufsize - result, + &wss->bcast); + result += scnprintf(buf + result, bufsize - result, + " 0x%02x %u ", wss->hash, wss->secure_status); + result += wlp_wss_key_print(buf + result, bufsize - result, + wss->master_key); + result += scnprintf(buf + result, bufsize - result, " 0x%02x ", + wss->tag); + result += uwb_mac_addr_print(buf + result, bufsize - result, + &wss->virtual_addr); + result += scnprintf(buf + result, bufsize - result, " %s", wss->name); + result += scnprintf(buf + result, bufsize - result, + "\n\n#WSSID\n#WSS broadcast address\n" + "#WSS hash\n#WSS secure status\n" + "#WSS master key\n#WSS local tag\n" + "#WSS local virtual EUI-48\n#WSS name\n"); + return result; +} + +/** + * Show which WSS is activated. + */ +ssize_t wlp_wss_activate_show(struct wlp_wss *wss, char *buf) +{ + int result = 0; + + if (mutex_lock_interruptible(&wss->mutex)) + goto out; + if (wss->state >= WLP_WSS_STATE_ACTIVE) + result = __wlp_wss_properties_show(wss, buf, PAGE_SIZE); + else + result = scnprintf(buf, PAGE_SIZE, "No local WSS active.\n"); + result += scnprintf(buf + result, PAGE_SIZE - result, + "\n\n" + "# echo WSSID SECURE_STATUS ACCEPT_ENROLLMENT " + "NAME #create new WSS\n" + "# echo WSSID [DEV ADDR] #enroll in and activate " + "existing WSS, can request registrar\n" + "#\n" + "# WSSID is a 16 byte hex array. Eg. 12 A3 3B ... \n" + "# SECURE_STATUS 0 - unsecure, 1 - secure (default)\n" + "# ACCEPT_ENROLLMENT 0 - no, 1 - yes (default)\n" + "# NAME is the text string identifying the WSS\n" + "# DEV ADDR is the device address of neighbor " + "that should be registrar. Eg. 32:AB\n"); + + mutex_unlock(&wss->mutex); +out: + return result; + +} +EXPORT_SYMBOL_GPL(wlp_wss_activate_show); + +/** + * Create/activate a new WSS or enroll/activate in neighboring WSS + * + * The user can provide the WSSID of a WSS in which it wants to enroll. + * Only the WSSID is necessary if the WSS have been discovered before. If + * the WSS has not been discovered before, or the user wants to use a + * particular neighbor as its registrar, then the user can also provide a + * device address or the neighbor that will be used as registrar. + * + * A new WSS is created when the user provides a WSSID, secure status, and + * WSS name. + */ +ssize_t wlp_wss_activate_store(struct wlp_wss *wss, + const char *buf, size_t size) +{ + ssize_t result = -EINVAL; + struct wlp_uuid wssid; + struct uwb_dev_addr dev; + struct uwb_dev_addr bcast = {.data = {0xff, 0xff} }; + char name[65]; + unsigned sec_status, accept; + memset(name, 0, sizeof(name)); + result = sscanf(buf, "%02hhx %02hhx %02hhx %02hhx " + "%02hhx %02hhx %02hhx %02hhx " + "%02hhx %02hhx %02hhx %02hhx " + "%02hhx %02hhx %02hhx %02hhx " + "%02hhx:%02hhx", + &wssid.data[0] , &wssid.data[1], + &wssid.data[2] , &wssid.data[3], + &wssid.data[4] , &wssid.data[5], + &wssid.data[6] , &wssid.data[7], + &wssid.data[8] , &wssid.data[9], + &wssid.data[10], &wssid.data[11], + &wssid.data[12], &wssid.data[13], + &wssid.data[14], &wssid.data[15], + &dev.data[1], &dev.data[0]); + if (result == 16 || result == 17) { + result = sscanf(buf, "%02hhx %02hhx %02hhx %02hhx " + "%02hhx %02hhx %02hhx %02hhx " + "%02hhx %02hhx %02hhx %02hhx " + "%02hhx %02hhx %02hhx %02hhx " + "%u %u %64c", + &wssid.data[0] , &wssid.data[1], + &wssid.data[2] , &wssid.data[3], + &wssid.data[4] , &wssid.data[5], + &wssid.data[6] , &wssid.data[7], + &wssid.data[8] , &wssid.data[9], + &wssid.data[10], &wssid.data[11], + &wssid.data[12], &wssid.data[13], + &wssid.data[14], &wssid.data[15], + &sec_status, &accept, name); + if (result == 16) + result = wlp_wss_enroll_activate(wss, &wssid, &bcast); + else if (result == 19) { + sec_status = sec_status == 0 ? 0 : 1; + accept = accept == 0 ? 0 : 1; + /* We read name using %c, so the newline needs to be + * removed */ + if (strlen(name) != sizeof(name) - 1) + name[strlen(name) - 1] = '\0'; + result = wlp_wss_create_activate(wss, &wssid, name, + sec_status, accept); + } else + result = -EINVAL; + } else if (result == 18) + result = wlp_wss_enroll_activate(wss, &wssid, &dev); + else + result = -EINVAL; + return result < 0 ? result : size; +} +EXPORT_SYMBOL_GPL(wlp_wss_activate_store); + +/** + * Show the UUID of this host + */ +ssize_t wlp_uuid_show(struct wlp *wlp, char *buf) +{ + ssize_t result = 0; + + mutex_lock(&wlp->mutex); + result = wlp_wss_uuid_print(buf, PAGE_SIZE, &wlp->uuid); + buf[result++] = '\n'; + mutex_unlock(&wlp->mutex); + return result; +} +EXPORT_SYMBOL_GPL(wlp_uuid_show); + +/** + * Store a new UUID for this host + * + * According to the spec this should be encoded as an octet string in the + * order the octets are shown in string representation in RFC 4122 (WLP + * 0.99 [Table 6]) + * + * We do not check value provided by user. + */ +ssize_t wlp_uuid_store(struct wlp *wlp, const char *buf, size_t size) +{ + ssize_t result; + struct wlp_uuid uuid; + + mutex_lock(&wlp->mutex); + result = sscanf(buf, "%02hhx %02hhx %02hhx %02hhx " + "%02hhx %02hhx %02hhx %02hhx " + "%02hhx %02hhx %02hhx %02hhx " + "%02hhx %02hhx %02hhx %02hhx ", + &uuid.data[0] , &uuid.data[1], + &uuid.data[2] , &uuid.data[3], + &uuid.data[4] , &uuid.data[5], + &uuid.data[6] , &uuid.data[7], + &uuid.data[8] , &uuid.data[9], + &uuid.data[10], &uuid.data[11], + &uuid.data[12], &uuid.data[13], + &uuid.data[14], &uuid.data[15]); + if (result != 16) { + result = -EINVAL; + goto error; + } + wlp->uuid = uuid; +error: + mutex_unlock(&wlp->mutex); + return result < 0 ? result : size; +} +EXPORT_SYMBOL_GPL(wlp_uuid_store); + +/** + * Show contents of members of device information structure + */ +#define wlp_dev_info_show(type) \ +ssize_t wlp_dev_##type##_show(struct wlp *wlp, char *buf) \ +{ \ + ssize_t result = 0; \ + mutex_lock(&wlp->mutex); \ + if (wlp->dev_info == NULL) { \ + result = __wlp_setup_device_info(wlp); \ + if (result < 0) \ + goto out; \ + } \ + result = scnprintf(buf, PAGE_SIZE, "%s\n", wlp->dev_info->type);\ +out: \ + mutex_unlock(&wlp->mutex); \ + return result; \ +} \ +EXPORT_SYMBOL_GPL(wlp_dev_##type##_show); + +wlp_dev_info_show(name) +wlp_dev_info_show(model_name) +wlp_dev_info_show(model_nr) +wlp_dev_info_show(manufacturer) +wlp_dev_info_show(serial) + +/** + * Store contents of members of device information structure + */ +#define wlp_dev_info_store(type, len) \ +ssize_t wlp_dev_##type##_store(struct wlp *wlp, const char *buf, size_t size)\ +{ \ + ssize_t result; \ + char format[10]; \ + mutex_lock(&wlp->mutex); \ + if (wlp->dev_info == NULL) { \ + result = __wlp_alloc_device_info(wlp); \ + if (result < 0) \ + goto out; \ + } \ + memset(wlp->dev_info->type, 0, sizeof(wlp->dev_info->type)); \ + sprintf(format, "%%%uc", len); \ + result = sscanf(buf, format, wlp->dev_info->type); \ +out: \ + mutex_unlock(&wlp->mutex); \ + return result < 0 ? result : size; \ +} \ +EXPORT_SYMBOL_GPL(wlp_dev_##type##_store); + +wlp_dev_info_store(name, 32) +wlp_dev_info_store(manufacturer, 64) +wlp_dev_info_store(model_name, 32) +wlp_dev_info_store(model_nr, 32) +wlp_dev_info_store(serial, 32) + +static +const char *__wlp_dev_category[] = { + [WLP_DEV_CAT_COMPUTER] = "Computer", + [WLP_DEV_CAT_INPUT] = "Input device", + [WLP_DEV_CAT_PRINT_SCAN_FAX_COPIER] = "Printer, scanner, FAX, or " + "Copier", + [WLP_DEV_CAT_CAMERA] = "Camera", + [WLP_DEV_CAT_STORAGE] = "Storage Network", + [WLP_DEV_CAT_INFRASTRUCTURE] = "Infrastructure", + [WLP_DEV_CAT_DISPLAY] = "Display", + [WLP_DEV_CAT_MULTIM] = "Multimedia device", + [WLP_DEV_CAT_GAMING] = "Gaming device", + [WLP_DEV_CAT_TELEPHONE] = "Telephone", + [WLP_DEV_CAT_OTHER] = "Other", +}; + +static +const char *wlp_dev_category_str(unsigned cat) +{ + if ((cat >= WLP_DEV_CAT_COMPUTER && cat <= WLP_DEV_CAT_TELEPHONE) + || cat == WLP_DEV_CAT_OTHER) + return __wlp_dev_category[cat]; + return "unknown category"; +} + +ssize_t wlp_dev_prim_category_show(struct wlp *wlp, char *buf) +{ + ssize_t result = 0; + mutex_lock(&wlp->mutex); + if (wlp->dev_info == NULL) { + result = __wlp_setup_device_info(wlp); + if (result < 0) + goto out; + } + result = scnprintf(buf, PAGE_SIZE, "%s\n", + wlp_dev_category_str(wlp->dev_info->prim_dev_type.category)); +out: + mutex_unlock(&wlp->mutex); + return result; +} +EXPORT_SYMBOL_GPL(wlp_dev_prim_category_show); + +ssize_t wlp_dev_prim_category_store(struct wlp *wlp, const char *buf, + size_t size) +{ + ssize_t result; + u16 cat; + mutex_lock(&wlp->mutex); + if (wlp->dev_info == NULL) { + result = __wlp_alloc_device_info(wlp); + if (result < 0) + goto out; + } + result = sscanf(buf, "%hu", &cat); + if ((cat >= WLP_DEV_CAT_COMPUTER && cat <= WLP_DEV_CAT_TELEPHONE) + || cat == WLP_DEV_CAT_OTHER) + wlp->dev_info->prim_dev_type.category = cat; + else + result = -EINVAL; +out: + mutex_unlock(&wlp->mutex); + return result < 0 ? result : size; +} +EXPORT_SYMBOL_GPL(wlp_dev_prim_category_store); + +ssize_t wlp_dev_prim_OUI_show(struct wlp *wlp, char *buf) +{ + ssize_t result = 0; + mutex_lock(&wlp->mutex); + if (wlp->dev_info == NULL) { + result = __wlp_setup_device_info(wlp); + if (result < 0) + goto out; + } + result = scnprintf(buf, PAGE_SIZE, "%02x:%02x:%02x\n", + wlp->dev_info->prim_dev_type.OUI[0], + wlp->dev_info->prim_dev_type.OUI[1], + wlp->dev_info->prim_dev_type.OUI[2]); +out: + mutex_unlock(&wlp->mutex); + return result; +} +EXPORT_SYMBOL_GPL(wlp_dev_prim_OUI_show); + +ssize_t wlp_dev_prim_OUI_store(struct wlp *wlp, const char *buf, size_t size) +{ + ssize_t result; + u8 OUI[3]; + mutex_lock(&wlp->mutex); + if (wlp->dev_info == NULL) { + result = __wlp_alloc_device_info(wlp); + if (result < 0) + goto out; + } + result = sscanf(buf, "%hhx:%hhx:%hhx", + &OUI[0], &OUI[1], &OUI[2]); + if (result != 3) { + result = -EINVAL; + goto out; + } else + memcpy(wlp->dev_info->prim_dev_type.OUI, OUI, sizeof(OUI)); +out: + mutex_unlock(&wlp->mutex); + return result < 0 ? result : size; +} +EXPORT_SYMBOL_GPL(wlp_dev_prim_OUI_store); + + +ssize_t wlp_dev_prim_OUI_sub_show(struct wlp *wlp, char *buf) +{ + ssize_t result = 0; + mutex_lock(&wlp->mutex); + if (wlp->dev_info == NULL) { + result = __wlp_setup_device_info(wlp); + if (result < 0) + goto out; + } + result = scnprintf(buf, PAGE_SIZE, "%u\n", + wlp->dev_info->prim_dev_type.OUIsubdiv); +out: + mutex_unlock(&wlp->mutex); + return result; +} +EXPORT_SYMBOL_GPL(wlp_dev_prim_OUI_sub_show); + +ssize_t wlp_dev_prim_OUI_sub_store(struct wlp *wlp, const char *buf, + size_t size) +{ + ssize_t result; + unsigned sub; + u8 max_sub = ~0; + mutex_lock(&wlp->mutex); + if (wlp->dev_info == NULL) { + result = __wlp_alloc_device_info(wlp); + if (result < 0) + goto out; + } + result = sscanf(buf, "%u", &sub); + if (sub <= max_sub) + wlp->dev_info->prim_dev_type.OUIsubdiv = sub; + else + result = -EINVAL; +out: + mutex_unlock(&wlp->mutex); + return result < 0 ? result : size; +} +EXPORT_SYMBOL_GPL(wlp_dev_prim_OUI_sub_store); + +ssize_t wlp_dev_prim_subcat_show(struct wlp *wlp, char *buf) +{ + ssize_t result = 0; + mutex_lock(&wlp->mutex); + if (wlp->dev_info == NULL) { + result = __wlp_setup_device_info(wlp); + if (result < 0) + goto out; + } + result = scnprintf(buf, PAGE_SIZE, "%u\n", + wlp->dev_info->prim_dev_type.subID); +out: + mutex_unlock(&wlp->mutex); + return result; +} +EXPORT_SYMBOL_GPL(wlp_dev_prim_subcat_show); + +ssize_t wlp_dev_prim_subcat_store(struct wlp *wlp, const char *buf, + size_t size) +{ + ssize_t result; + unsigned sub; + __le16 max_sub = ~0; + mutex_lock(&wlp->mutex); + if (wlp->dev_info == NULL) { + result = __wlp_alloc_device_info(wlp); + if (result < 0) + goto out; + } + result = sscanf(buf, "%u", &sub); + if (sub <= max_sub) + wlp->dev_info->prim_dev_type.subID = sub; + else + result = -EINVAL; +out: + mutex_unlock(&wlp->mutex); + return result < 0 ? result : size; +} +EXPORT_SYMBOL_GPL(wlp_dev_prim_subcat_store); + +/** + * Subsystem implementation for interaction with individual WSS via sysfs + * + * Followed instructions for subsystem in Documentation/filesystems/sysfs.txt + */ + +#define kobj_to_wlp_wss(obj) container_of(obj, struct wlp_wss, kobj) +#define attr_to_wlp_wss_attr(_attr) \ + container_of(_attr, struct wlp_wss_attribute, attr) + +/** + * Sysfs subsystem: forward read calls + * + * Sysfs operation for forwarding read call to the show method of the + * attribute owner + */ +static +ssize_t wlp_wss_attr_show(struct kobject *kobj, struct attribute *attr, + char *buf) +{ + struct wlp_wss_attribute *wss_attr = attr_to_wlp_wss_attr(attr); + struct wlp_wss *wss = kobj_to_wlp_wss(kobj); + ssize_t ret = -EIO; + + if (wss_attr->show) + ret = wss_attr->show(wss, buf); + return ret; +} +/** + * Sysfs subsystem: forward write calls + * + * Sysfs operation for forwarding write call to the store method of the + * attribute owner + */ +static +ssize_t wlp_wss_attr_store(struct kobject *kobj, struct attribute *attr, + const char *buf, size_t count) +{ + struct wlp_wss_attribute *wss_attr = attr_to_wlp_wss_attr(attr); + struct wlp_wss *wss = kobj_to_wlp_wss(kobj); + ssize_t ret = -EIO; + + if (wss_attr->store) + ret = wss_attr->store(wss, buf, count); + return ret; +} + +static +struct sysfs_ops wss_sysfs_ops = { + .show = wlp_wss_attr_show, + .store = wlp_wss_attr_store, +}; + +struct kobj_type wss_ktype = { + .release = wlp_wss_release, + .sysfs_ops = &wss_sysfs_ops, +}; + + +/** + * Sysfs files for individual WSS + */ + +/** + * Print static properties of this WSS + * + * The name of a WSS may not be null teminated. It's max size is 64 bytes + * so we copy it to a larger array just to make sure we print sane data. + */ +static ssize_t wlp_wss_properties_show(struct wlp_wss *wss, char *buf) +{ + int result = 0; + + if (mutex_lock_interruptible(&wss->mutex)) + goto out; + result = __wlp_wss_properties_show(wss, buf, PAGE_SIZE); + mutex_unlock(&wss->mutex); +out: + return result; +} +WSS_ATTR(properties, S_IRUGO, wlp_wss_properties_show, NULL); + +/** + * Print all connected members of this WSS + * The EDA cache contains all members of WSS neighborhood. + */ +static ssize_t wlp_wss_members_show(struct wlp_wss *wss, char *buf) +{ + struct wlp *wlp = container_of(wss, struct wlp, wss); + return wlp_eda_show(wlp, buf); +} +WSS_ATTR(members, S_IRUGO, wlp_wss_members_show, NULL); + +static +const char *__wlp_strstate[] = { + "none", + "partially enrolled", + "enrolled", + "active", + "connected", +}; + +static const char *wlp_wss_strstate(unsigned state) +{ + if (state >= ARRAY_SIZE(__wlp_strstate)) + return "unknown state"; + return __wlp_strstate[state]; +} + +/* + * Print current state of this WSS + */ +static ssize_t wlp_wss_state_show(struct wlp_wss *wss, char *buf) +{ + int result = 0; + + if (mutex_lock_interruptible(&wss->mutex)) + goto out; + result = scnprintf(buf, PAGE_SIZE, "%s\n", + wlp_wss_strstate(wss->state)); + mutex_unlock(&wss->mutex); +out: + return result; +} +WSS_ATTR(state, S_IRUGO, wlp_wss_state_show, NULL); + + +static +struct attribute *wss_attrs[] = { + &wss_attr_properties.attr, + &wss_attr_members.attr, + &wss_attr_state.attr, + NULL, +}; + +struct attribute_group wss_attr_group = { + .name = NULL, /* we want them in the same directory */ + .attrs = wss_attrs, +}; |