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Release 4.11 drivers/net/wireless/broadcom/b43legacy/sysfs.c

/*

  Broadcom B43legacy wireless driver

  SYSFS support routines

  Copyright (c) 2006 Michael Buesch <m@bues.ch>

  This program is free software; you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation; either version 2 of the License, or
  (at your option) any later version.

  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; see the file COPYING.  If not, write to
  the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor,
  Boston, MA 02110-1301, USA.

*/

#include "sysfs.h"
#include "b43legacy.h"
#include "main.h"
#include "phy.h"
#include "radio.h"

#include <linux/capability.h>



#define GENERIC_FILESIZE	64



static int get_integer(const char *buf, size_t count) { char tmp[10 + 1] = { 0 }; int ret = -EINVAL; if (count == 0) goto out; count = min_t(size_t, count, 10); memcpy(tmp, buf, count); ret = simple_strtol(tmp, NULL, 10); out: return ret; }

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static int get_boolean(const char *buf, size_t count) { if (count != 0) { if (buf[0] == '1') return 1; if (buf[0] == '0') return 0; if (count >= 4 && memcmp(buf, "true", 4) == 0) return 1; if (count >= 5 && memcmp(buf, "false", 5) == 0) return 0; if (count >= 3 && memcmp(buf, "yes", 3) == 0) return 1; if (count >= 2 && memcmp(buf, "no", 2) == 0) return 0; if (count >= 2 && memcmp(buf, "on", 2) == 0) return 1; if (count >= 3 && memcmp(buf, "off", 3) == 0) return 0; } return -EINVAL; }

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static ssize_t b43legacy_attr_interfmode_show(struct device *dev, struct device_attribute *attr, char *buf) { struct b43legacy_wldev *wldev = dev_to_b43legacy_wldev(dev); ssize_t count = 0; if (!capable(CAP_NET_ADMIN)) return -EPERM; mutex_lock(&wldev->wl->mutex); switch (wldev->phy.interfmode) { case B43legacy_INTERFMODE_NONE: count = snprintf(buf, PAGE_SIZE, "0 (No Interference" " Mitigation)\n"); break; case B43legacy_INTERFMODE_NONWLAN: count = snprintf(buf, PAGE_SIZE, "1 (Non-WLAN Interference" " Mitigation)\n"); break; case B43legacy_INTERFMODE_MANUALWLAN: count = snprintf(buf, PAGE_SIZE, "2 (WLAN Interference" " Mitigation)\n"); break; default: B43legacy_WARN_ON(1); } mutex_unlock(&wldev->wl->mutex); return count; }

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static ssize_t b43legacy_attr_interfmode_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct b43legacy_wldev *wldev = dev_to_b43legacy_wldev(dev); unsigned long flags; int err; int mode; if (!capable(CAP_NET_ADMIN)) return -EPERM; mode = get_integer(buf, count); switch (mode) { case 0: mode = B43legacy_INTERFMODE_NONE; break; case 1: mode = B43legacy_INTERFMODE_NONWLAN; break; case 2: mode = B43legacy_INTERFMODE_MANUALWLAN; break; case 3: mode = B43legacy_INTERFMODE_AUTOWLAN; break; default: return -EINVAL; } mutex_lock(&wldev->wl->mutex); spin_lock_irqsave(&wldev->wl->irq_lock, flags); err = b43legacy_radio_set_interference_mitigation(wldev, mode); if (err) b43legacyerr(wldev->wl, "Interference Mitigation not " "supported by device\n"); mmiowb(); spin_unlock_irqrestore(&wldev->wl->irq_lock, flags); mutex_unlock(&wldev->wl->mutex); return err ? err : count; }

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static DEVICE_ATTR(interference, 0644, b43legacy_attr_interfmode_show, b43legacy_attr_interfmode_store);
static ssize_t b43legacy_attr_preamble_show(struct device *dev, struct device_attribute *attr, char *buf) { struct b43legacy_wldev *wldev = dev_to_b43legacy_wldev(dev); ssize_t count; if (!capable(CAP_NET_ADMIN)) return -EPERM; mutex_lock(&wldev->wl->mutex); if (wldev->short_preamble) count = snprintf(buf, PAGE_SIZE, "1 (Short Preamble" " enabled)\n"); else count = snprintf(buf, PAGE_SIZE, "0 (Short Preamble" " disabled)\n"); mutex_unlock(&wldev->wl->mutex); return count; }

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static ssize_t b43legacy_attr_preamble_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct b43legacy_wldev *wldev = dev_to_b43legacy_wldev(dev); unsigned long flags; int value; if (!capable(CAP_NET_ADMIN)) return -EPERM; value = get_boolean(buf, count); if (value < 0) return value; mutex_lock(&wldev->wl->mutex); spin_lock_irqsave(&wldev->wl->irq_lock, flags); wldev->short_preamble = !!value; spin_unlock_irqrestore(&wldev->wl->irq_lock, flags); mutex_unlock(&wldev->wl->mutex); return count; }

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static DEVICE_ATTR(shortpreamble, 0644, b43legacy_attr_preamble_show, b43legacy_attr_preamble_store);
int b43legacy_sysfs_register(struct b43legacy_wldev *wldev) { struct device *dev = wldev->dev->dev; int err; B43legacy_WARN_ON(b43legacy_status(wldev) != B43legacy_STAT_INITIALIZED); err = device_create_file(dev, &dev_attr_interference); if (err) goto out; err = device_create_file(dev, &dev_attr_shortpreamble); if (err) goto err_remove_interfmode; out: return err; err_remove_interfmode: device_remove_file(dev, &dev_attr_interference); goto out; }

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void b43legacy_sysfs_unregister(struct b43legacy_wldev *wldev) { struct device *dev = wldev->dev->dev; device_remove_file(dev, &dev_attr_shortpreamble); device_remove_file(dev, &dev_attr_interference); }

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Overall Contributors

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Larry Finger95799.58%133.33%
Silvan Jegen30.31%133.33%
Michael Büsch10.10%133.33%
Total961100.00%3100.00%
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