![Emese Revfy](/assets/img/avatar_default.png)
Constify struct sysfs_ops. This is part of the ops structure constification effort started by Arjan van de Ven et al. Benefits of this constification: * prevents modification of data that is shared (referenced) by many other structure instances at runtime * detects/prevents accidental (but not intentional) modification attempts on archs that enforce read-only kernel data at runtime * potentially better optimized code as the compiler can assume that the const data cannot be changed * the compiler/linker move const data into .rodata and therefore exclude them from false sharing Signed-off-by: Emese Revfy <re.emese@gmail.com> Acked-by: David Teigland <teigland@redhat.com> Acked-by: Matt Domsch <Matt_Domsch@dell.com> Acked-by: Maciej Sosnowski <maciej.sosnowski@intel.com> Acked-by: Hans J. Koch <hjk@linutronix.de> Acked-by: Pekka Enberg <penberg@cs.helsinki.fi> Acked-by: Jens Axboe <jens.axboe@oracle.com> Acked-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
709 lines
19 KiB
C
709 lines
19 KiB
C
/*
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* WiMedia Logical Link Control Protocol (WLP)
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* sysfs functions
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*
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* Copyright (C) 2007 Intel Corporation
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* Reinette Chatre <reinette.chatre@intel.com>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License version
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* 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301, USA.
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*
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*
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* FIXME: Docs
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*
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*/
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#include <linux/wlp.h>
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#include "wlp-internal.h"
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static
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size_t wlp_wss_wssid_e_print(char *buf, size_t bufsize,
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struct wlp_wssid_e *wssid_e)
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{
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size_t used = 0;
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used += scnprintf(buf, bufsize, " WSS: ");
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used += wlp_wss_uuid_print(buf + used, bufsize - used,
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&wssid_e->wssid);
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if (wssid_e->info != NULL) {
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used += scnprintf(buf + used, bufsize - used, " ");
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used += uwb_mac_addr_print(buf + used, bufsize - used,
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&wssid_e->info->bcast);
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used += scnprintf(buf + used, bufsize - used, " %u %u %s\n",
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wssid_e->info->accept_enroll,
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wssid_e->info->sec_status,
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wssid_e->info->name);
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}
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return used;
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}
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/**
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* Print out information learned from neighbor discovery
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*
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* Some fields being printed may not be included in the device discovery
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* information (it is not mandatory). We are thus careful how the
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* information is printed to ensure it is clear to the user what field is
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* being referenced.
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* The information being printed is for one time use - temporary storage is
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* cleaned after it is printed.
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*
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* Ideally sysfs output should be on one line. The information printed here
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* contain a few strings so it will be hard to parse if they are all
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* printed on the same line - without agreeing on a standard field
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* separator.
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*/
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static
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ssize_t wlp_wss_neighborhood_print_remove(struct wlp *wlp, char *buf,
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size_t bufsize)
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{
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size_t used = 0;
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struct wlp_neighbor_e *neighb;
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struct wlp_wssid_e *wssid_e;
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mutex_lock(&wlp->nbmutex);
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used = scnprintf(buf, bufsize, "#Neighbor information\n"
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"#uuid dev_addr\n"
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"# Device Name:\n# Model Name:\n# Manufacturer:\n"
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"# Model Nr:\n# Serial:\n"
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"# Pri Dev type: CategoryID OUI OUISubdiv "
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"SubcategoryID\n"
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"# WSS: WSSID WSS_name accept_enroll sec_status "
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"bcast\n"
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"# WSS: WSSID WSS_name accept_enroll sec_status "
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"bcast\n\n");
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list_for_each_entry(neighb, &wlp->neighbors, node) {
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if (bufsize - used <= 0)
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goto out;
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used += wlp_wss_uuid_print(buf + used, bufsize - used,
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&neighb->uuid);
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buf[used++] = ' ';
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used += uwb_dev_addr_print(buf + used, bufsize - used,
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&neighb->uwb_dev->dev_addr);
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if (neighb->info != NULL)
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used += scnprintf(buf + used, bufsize - used,
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"\n Device Name: %s\n"
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" Model Name: %s\n"
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" Manufacturer:%s \n"
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" Model Nr: %s\n"
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" Serial: %s\n"
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" Pri Dev type: "
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"%u %02x:%02x:%02x %u %u\n",
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neighb->info->name,
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neighb->info->model_name,
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neighb->info->manufacturer,
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neighb->info->model_nr,
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neighb->info->serial,
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neighb->info->prim_dev_type.category,
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neighb->info->prim_dev_type.OUI[0],
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neighb->info->prim_dev_type.OUI[1],
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neighb->info->prim_dev_type.OUI[2],
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neighb->info->prim_dev_type.OUIsubdiv,
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neighb->info->prim_dev_type.subID);
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list_for_each_entry(wssid_e, &neighb->wssid, node) {
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used += wlp_wss_wssid_e_print(buf + used,
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bufsize - used,
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wssid_e);
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}
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buf[used++] = '\n';
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wlp_remove_neighbor_tmp_info(neighb);
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}
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out:
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mutex_unlock(&wlp->nbmutex);
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return used;
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}
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/**
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* Show properties of all WSS in neighborhood.
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*
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* Will trigger a complete discovery of WSS activated by this device and
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* its neighbors.
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*/
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ssize_t wlp_neighborhood_show(struct wlp *wlp, char *buf)
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{
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wlp_discover(wlp);
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return wlp_wss_neighborhood_print_remove(wlp, buf, PAGE_SIZE);
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}
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EXPORT_SYMBOL_GPL(wlp_neighborhood_show);
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static
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ssize_t __wlp_wss_properties_show(struct wlp_wss *wss, char *buf,
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size_t bufsize)
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{
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ssize_t result;
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result = wlp_wss_uuid_print(buf, bufsize, &wss->wssid);
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result += scnprintf(buf + result, bufsize - result, " ");
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result += uwb_mac_addr_print(buf + result, bufsize - result,
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&wss->bcast);
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result += scnprintf(buf + result, bufsize - result,
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" 0x%02x %u ", wss->hash, wss->secure_status);
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result += wlp_wss_key_print(buf + result, bufsize - result,
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wss->master_key);
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result += scnprintf(buf + result, bufsize - result, " 0x%02x ",
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wss->tag);
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result += uwb_mac_addr_print(buf + result, bufsize - result,
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&wss->virtual_addr);
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result += scnprintf(buf + result, bufsize - result, " %s", wss->name);
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result += scnprintf(buf + result, bufsize - result,
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"\n\n#WSSID\n#WSS broadcast address\n"
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"#WSS hash\n#WSS secure status\n"
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"#WSS master key\n#WSS local tag\n"
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"#WSS local virtual EUI-48\n#WSS name\n");
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return result;
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}
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/**
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* Show which WSS is activated.
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*/
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ssize_t wlp_wss_activate_show(struct wlp_wss *wss, char *buf)
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{
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int result = 0;
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if (mutex_lock_interruptible(&wss->mutex))
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goto out;
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if (wss->state >= WLP_WSS_STATE_ACTIVE)
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result = __wlp_wss_properties_show(wss, buf, PAGE_SIZE);
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else
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result = scnprintf(buf, PAGE_SIZE, "No local WSS active.\n");
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result += scnprintf(buf + result, PAGE_SIZE - result,
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"\n\n"
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"# echo WSSID SECURE_STATUS ACCEPT_ENROLLMENT "
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"NAME #create new WSS\n"
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"# echo WSSID [DEV ADDR] #enroll in and activate "
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"existing WSS, can request registrar\n"
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"#\n"
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"# WSSID is a 16 byte hex array. Eg. 12 A3 3B ... \n"
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"# SECURE_STATUS 0 - unsecure, 1 - secure (default)\n"
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"# ACCEPT_ENROLLMENT 0 - no, 1 - yes (default)\n"
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"# NAME is the text string identifying the WSS\n"
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"# DEV ADDR is the device address of neighbor "
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"that should be registrar. Eg. 32:AB\n");
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mutex_unlock(&wss->mutex);
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out:
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return result;
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}
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EXPORT_SYMBOL_GPL(wlp_wss_activate_show);
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/**
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* Create/activate a new WSS or enroll/activate in neighboring WSS
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*
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* The user can provide the WSSID of a WSS in which it wants to enroll.
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* Only the WSSID is necessary if the WSS have been discovered before. If
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* the WSS has not been discovered before, or the user wants to use a
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* particular neighbor as its registrar, then the user can also provide a
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* device address or the neighbor that will be used as registrar.
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*
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* A new WSS is created when the user provides a WSSID, secure status, and
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* WSS name.
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*/
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ssize_t wlp_wss_activate_store(struct wlp_wss *wss,
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const char *buf, size_t size)
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{
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ssize_t result = -EINVAL;
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struct wlp_uuid wssid;
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struct uwb_dev_addr dev;
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struct uwb_dev_addr bcast = {.data = {0xff, 0xff} };
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char name[65];
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unsigned sec_status, accept;
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memset(name, 0, sizeof(name));
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result = sscanf(buf, "%02hhx %02hhx %02hhx %02hhx "
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"%02hhx %02hhx %02hhx %02hhx "
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"%02hhx %02hhx %02hhx %02hhx "
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"%02hhx %02hhx %02hhx %02hhx "
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"%02hhx:%02hhx",
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&wssid.data[0] , &wssid.data[1],
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&wssid.data[2] , &wssid.data[3],
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&wssid.data[4] , &wssid.data[5],
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&wssid.data[6] , &wssid.data[7],
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&wssid.data[8] , &wssid.data[9],
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&wssid.data[10], &wssid.data[11],
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&wssid.data[12], &wssid.data[13],
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&wssid.data[14], &wssid.data[15],
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&dev.data[1], &dev.data[0]);
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if (result == 16 || result == 17) {
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result = sscanf(buf, "%02hhx %02hhx %02hhx %02hhx "
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"%02hhx %02hhx %02hhx %02hhx "
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"%02hhx %02hhx %02hhx %02hhx "
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"%02hhx %02hhx %02hhx %02hhx "
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"%u %u %64c",
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&wssid.data[0] , &wssid.data[1],
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&wssid.data[2] , &wssid.data[3],
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&wssid.data[4] , &wssid.data[5],
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&wssid.data[6] , &wssid.data[7],
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&wssid.data[8] , &wssid.data[9],
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&wssid.data[10], &wssid.data[11],
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&wssid.data[12], &wssid.data[13],
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&wssid.data[14], &wssid.data[15],
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&sec_status, &accept, name);
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if (result == 16)
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result = wlp_wss_enroll_activate(wss, &wssid, &bcast);
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else if (result == 19) {
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sec_status = sec_status == 0 ? 0 : 1;
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accept = accept == 0 ? 0 : 1;
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/* We read name using %c, so the newline needs to be
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* removed */
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if (strlen(name) != sizeof(name) - 1)
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name[strlen(name) - 1] = '\0';
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result = wlp_wss_create_activate(wss, &wssid, name,
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sec_status, accept);
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} else
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result = -EINVAL;
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} else if (result == 18)
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result = wlp_wss_enroll_activate(wss, &wssid, &dev);
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else
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result = -EINVAL;
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return result < 0 ? result : size;
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}
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EXPORT_SYMBOL_GPL(wlp_wss_activate_store);
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/**
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* Show the UUID of this host
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*/
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ssize_t wlp_uuid_show(struct wlp *wlp, char *buf)
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{
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ssize_t result = 0;
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mutex_lock(&wlp->mutex);
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result = wlp_wss_uuid_print(buf, PAGE_SIZE, &wlp->uuid);
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buf[result++] = '\n';
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mutex_unlock(&wlp->mutex);
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return result;
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}
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EXPORT_SYMBOL_GPL(wlp_uuid_show);
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/**
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* Store a new UUID for this host
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*
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* According to the spec this should be encoded as an octet string in the
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* order the octets are shown in string representation in RFC 4122 (WLP
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* 0.99 [Table 6])
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*
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* We do not check value provided by user.
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*/
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ssize_t wlp_uuid_store(struct wlp *wlp, const char *buf, size_t size)
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{
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ssize_t result;
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struct wlp_uuid uuid;
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mutex_lock(&wlp->mutex);
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result = sscanf(buf, "%02hhx %02hhx %02hhx %02hhx "
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"%02hhx %02hhx %02hhx %02hhx "
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"%02hhx %02hhx %02hhx %02hhx "
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"%02hhx %02hhx %02hhx %02hhx ",
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&uuid.data[0] , &uuid.data[1],
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&uuid.data[2] , &uuid.data[3],
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&uuid.data[4] , &uuid.data[5],
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&uuid.data[6] , &uuid.data[7],
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&uuid.data[8] , &uuid.data[9],
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&uuid.data[10], &uuid.data[11],
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&uuid.data[12], &uuid.data[13],
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&uuid.data[14], &uuid.data[15]);
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if (result != 16) {
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result = -EINVAL;
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goto error;
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}
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wlp->uuid = uuid;
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error:
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mutex_unlock(&wlp->mutex);
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return result < 0 ? result : size;
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}
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EXPORT_SYMBOL_GPL(wlp_uuid_store);
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/**
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* Show contents of members of device information structure
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*/
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#define wlp_dev_info_show(type) \
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ssize_t wlp_dev_##type##_show(struct wlp *wlp, char *buf) \
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{ \
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ssize_t result = 0; \
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mutex_lock(&wlp->mutex); \
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if (wlp->dev_info == NULL) { \
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result = __wlp_setup_device_info(wlp); \
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if (result < 0) \
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goto out; \
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} \
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result = scnprintf(buf, PAGE_SIZE, "%s\n", wlp->dev_info->type);\
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out: \
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mutex_unlock(&wlp->mutex); \
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return result; \
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} \
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EXPORT_SYMBOL_GPL(wlp_dev_##type##_show);
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wlp_dev_info_show(name)
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wlp_dev_info_show(model_name)
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wlp_dev_info_show(model_nr)
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wlp_dev_info_show(manufacturer)
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wlp_dev_info_show(serial)
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/**
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* Store contents of members of device information structure
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*/
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#define wlp_dev_info_store(type, len) \
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ssize_t wlp_dev_##type##_store(struct wlp *wlp, const char *buf, size_t size)\
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{ \
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ssize_t result; \
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char format[10]; \
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mutex_lock(&wlp->mutex); \
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if (wlp->dev_info == NULL) { \
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result = __wlp_alloc_device_info(wlp); \
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if (result < 0) \
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goto out; \
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} \
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memset(wlp->dev_info->type, 0, sizeof(wlp->dev_info->type)); \
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sprintf(format, "%%%uc", len); \
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result = sscanf(buf, format, wlp->dev_info->type); \
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out: \
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mutex_unlock(&wlp->mutex); \
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return result < 0 ? result : size; \
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} \
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EXPORT_SYMBOL_GPL(wlp_dev_##type##_store);
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wlp_dev_info_store(name, 32)
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wlp_dev_info_store(manufacturer, 64)
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wlp_dev_info_store(model_name, 32)
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wlp_dev_info_store(model_nr, 32)
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wlp_dev_info_store(serial, 32)
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static
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const char *__wlp_dev_category[] = {
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[WLP_DEV_CAT_COMPUTER] = "Computer",
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[WLP_DEV_CAT_INPUT] = "Input device",
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[WLP_DEV_CAT_PRINT_SCAN_FAX_COPIER] = "Printer, scanner, FAX, or "
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"Copier",
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[WLP_DEV_CAT_CAMERA] = "Camera",
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[WLP_DEV_CAT_STORAGE] = "Storage Network",
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[WLP_DEV_CAT_INFRASTRUCTURE] = "Infrastructure",
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[WLP_DEV_CAT_DISPLAY] = "Display",
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[WLP_DEV_CAT_MULTIM] = "Multimedia device",
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[WLP_DEV_CAT_GAMING] = "Gaming device",
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[WLP_DEV_CAT_TELEPHONE] = "Telephone",
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[WLP_DEV_CAT_OTHER] = "Other",
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};
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static
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const char *wlp_dev_category_str(unsigned cat)
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{
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if ((cat >= WLP_DEV_CAT_COMPUTER && cat <= WLP_DEV_CAT_TELEPHONE)
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|| cat == WLP_DEV_CAT_OTHER)
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return __wlp_dev_category[cat];
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return "unknown category";
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}
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ssize_t wlp_dev_prim_category_show(struct wlp *wlp, char *buf)
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{
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ssize_t result = 0;
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mutex_lock(&wlp->mutex);
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if (wlp->dev_info == NULL) {
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result = __wlp_setup_device_info(wlp);
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if (result < 0)
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goto out;
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}
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result = scnprintf(buf, PAGE_SIZE, "%s\n",
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wlp_dev_category_str(wlp->dev_info->prim_dev_type.category));
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out:
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mutex_unlock(&wlp->mutex);
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return result;
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}
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EXPORT_SYMBOL_GPL(wlp_dev_prim_category_show);
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ssize_t wlp_dev_prim_category_store(struct wlp *wlp, const char *buf,
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size_t size)
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{
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ssize_t result;
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u16 cat;
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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 const 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,
|
|
};
|