--- /dev/null
+/*
+
+ 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;
+}
+
+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;
+}
+
+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;
+}
+
+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;
+}
+
+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;
+}
+
+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;
+}
+
+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;
+}
+
+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);
+}
Code Review / kvmfornfv.git / blobdiff