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176 lines
4.0 KiB
176 lines
4.0 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* This file provides /sys/class/ieee80211/<wiphy name>/ |
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* and some default attributes. |
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* |
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* Copyright 2005-2006 Jiri Benc <[email protected]> |
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* Copyright 2006 Johannes Berg <[email protected]> |
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* Copyright (C) 2020-2021 Intel Corporation |
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*/ |
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#include <linux/device.h> |
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#include <linux/module.h> |
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#include <linux/netdevice.h> |
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#include <linux/nl80211.h> |
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#include <linux/rtnetlink.h> |
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#include <net/cfg80211.h> |
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#include "sysfs.h" |
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#include "core.h" |
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#include "rdev-ops.h" |
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static inline struct cfg80211_registered_device *dev_to_rdev( |
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struct device *dev) |
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{ |
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return container_of(dev, struct cfg80211_registered_device, wiphy.dev); |
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} |
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#define SHOW_FMT(name, fmt, member) \ |
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static ssize_t name ## _show(struct device *dev, \ |
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struct device_attribute *attr, \ |
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char *buf) \ |
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{ \ |
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return sprintf(buf, fmt "\n", dev_to_rdev(dev)->member); \ |
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} \ |
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static DEVICE_ATTR_RO(name) |
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SHOW_FMT(index, "%d", wiphy_idx); |
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SHOW_FMT(macaddress, "%pM", wiphy.perm_addr); |
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SHOW_FMT(address_mask, "%pM", wiphy.addr_mask); |
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static ssize_t name_show(struct device *dev, |
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struct device_attribute *attr, |
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char *buf) |
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{ |
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struct wiphy *wiphy = &dev_to_rdev(dev)->wiphy; |
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return sprintf(buf, "%s\n", wiphy_name(wiphy)); |
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} |
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static DEVICE_ATTR_RO(name); |
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static ssize_t addresses_show(struct device *dev, |
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struct device_attribute *attr, |
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char *buf) |
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{ |
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struct wiphy *wiphy = &dev_to_rdev(dev)->wiphy; |
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char *start = buf; |
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int i; |
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if (!wiphy->addresses) |
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return sprintf(buf, "%pM\n", wiphy->perm_addr); |
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for (i = 0; i < wiphy->n_addresses; i++) |
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buf += sprintf(buf, "%pM\n", wiphy->addresses[i].addr); |
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return buf - start; |
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} |
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static DEVICE_ATTR_RO(addresses); |
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static struct attribute *ieee80211_attrs[] = { |
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&dev_attr_index.attr, |
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&dev_attr_macaddress.attr, |
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&dev_attr_address_mask.attr, |
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&dev_attr_addresses.attr, |
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&dev_attr_name.attr, |
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NULL, |
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}; |
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ATTRIBUTE_GROUPS(ieee80211); |
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static void wiphy_dev_release(struct device *dev) |
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{ |
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struct cfg80211_registered_device *rdev = dev_to_rdev(dev); |
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cfg80211_dev_free(rdev); |
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} |
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#ifdef CONFIG_PM_SLEEP |
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static void cfg80211_leave_all(struct cfg80211_registered_device *rdev) |
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{ |
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struct wireless_dev *wdev; |
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list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) |
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cfg80211_leave(rdev, wdev); |
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} |
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static int wiphy_suspend(struct device *dev) |
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{ |
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struct cfg80211_registered_device *rdev = dev_to_rdev(dev); |
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int ret = 0; |
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rdev->suspend_at = ktime_get_boottime_seconds(); |
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rtnl_lock(); |
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wiphy_lock(&rdev->wiphy); |
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if (rdev->wiphy.registered) { |
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if (!rdev->wiphy.wowlan_config) { |
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cfg80211_leave_all(rdev); |
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cfg80211_process_rdev_events(rdev); |
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} |
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if (rdev->ops->suspend) |
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ret = rdev_suspend(rdev, rdev->wiphy.wowlan_config); |
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if (ret == 1) { |
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/* Driver refuse to configure wowlan */ |
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cfg80211_leave_all(rdev); |
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cfg80211_process_rdev_events(rdev); |
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ret = rdev_suspend(rdev, NULL); |
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} |
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} |
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wiphy_unlock(&rdev->wiphy); |
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rtnl_unlock(); |
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return ret; |
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} |
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static int wiphy_resume(struct device *dev) |
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{ |
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struct cfg80211_registered_device *rdev = dev_to_rdev(dev); |
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int ret = 0; |
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/* Age scan results with time spent in suspend */ |
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cfg80211_bss_age(rdev, ktime_get_boottime_seconds() - rdev->suspend_at); |
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rtnl_lock(); |
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wiphy_lock(&rdev->wiphy); |
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if (rdev->wiphy.registered && rdev->ops->resume) |
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ret = rdev_resume(rdev); |
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wiphy_unlock(&rdev->wiphy); |
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if (ret) |
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cfg80211_shutdown_all_interfaces(&rdev->wiphy); |
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rtnl_unlock(); |
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return ret; |
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} |
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static SIMPLE_DEV_PM_OPS(wiphy_pm_ops, wiphy_suspend, wiphy_resume); |
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#define WIPHY_PM_OPS (&wiphy_pm_ops) |
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#else |
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#define WIPHY_PM_OPS NULL |
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#endif |
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static const void *wiphy_namespace(struct device *d) |
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{ |
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struct wiphy *wiphy = container_of(d, struct wiphy, dev); |
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return wiphy_net(wiphy); |
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} |
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struct class ieee80211_class = { |
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.name = "ieee80211", |
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.owner = THIS_MODULE, |
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.dev_release = wiphy_dev_release, |
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.dev_groups = ieee80211_groups, |
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.pm = WIPHY_PM_OPS, |
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.ns_type = &net_ns_type_operations, |
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.namespace = wiphy_namespace, |
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}; |
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int wiphy_sysfs_init(void) |
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{ |
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return class_register(&ieee80211_class); |
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} |
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void wiphy_sysfs_exit(void) |
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{ |
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class_unregister(&ieee80211_class); |
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}
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