mirror of https://gitee.com/openkylin/linux.git
677 lines
17 KiB
C
677 lines
17 KiB
C
/*
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* Copyright (C) 2010-2011 B.A.T.M.A.N. contributors:
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*
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* Marek Lindner
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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 version 2 of the GNU General Public
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* License 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, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* 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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#include "main.h"
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#include "bat_sysfs.h"
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#include "translation-table.h"
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#include "originator.h"
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#include "hard-interface.h"
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#include "gateway_common.h"
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#include "gateway_client.h"
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#include "vis.h"
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static struct net_device *kobj_to_netdev(struct kobject *obj)
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{
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struct device *dev = container_of(obj->parent, struct device, kobj);
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return to_net_dev(dev);
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}
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static struct bat_priv *kobj_to_batpriv(struct kobject *obj)
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{
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struct net_device *net_dev = kobj_to_netdev(obj);
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return netdev_priv(net_dev);
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}
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#define UEV_TYPE_VAR "BATTYPE="
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#define UEV_ACTION_VAR "BATACTION="
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#define UEV_DATA_VAR "BATDATA="
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static char *uev_action_str[] = {
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"add",
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"del",
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"change"
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};
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static char *uev_type_str[] = {
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"gw"
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};
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/* Use this, if you have customized show and store functions */
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#define BAT_ATTR(_name, _mode, _show, _store) \
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struct bat_attribute bat_attr_##_name = { \
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.attr = {.name = __stringify(_name), \
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.mode = _mode }, \
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.show = _show, \
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.store = _store, \
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};
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#define BAT_ATTR_STORE_BOOL(_name, _post_func) \
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ssize_t store_##_name(struct kobject *kobj, struct attribute *attr, \
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char *buff, size_t count) \
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{ \
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struct net_device *net_dev = kobj_to_netdev(kobj); \
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struct bat_priv *bat_priv = netdev_priv(net_dev); \
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return __store_bool_attr(buff, count, _post_func, attr, \
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&bat_priv->_name, net_dev); \
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}
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#define BAT_ATTR_SHOW_BOOL(_name) \
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ssize_t show_##_name(struct kobject *kobj, struct attribute *attr, \
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char *buff) \
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{ \
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struct bat_priv *bat_priv = kobj_to_batpriv(kobj); \
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return sprintf(buff, "%s\n", \
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atomic_read(&bat_priv->_name) == 0 ? \
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"disabled" : "enabled"); \
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} \
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/* Use this, if you are going to turn a [name] in bat_priv on or off */
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#define BAT_ATTR_BOOL(_name, _mode, _post_func) \
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static BAT_ATTR_STORE_BOOL(_name, _post_func) \
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static BAT_ATTR_SHOW_BOOL(_name) \
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static BAT_ATTR(_name, _mode, show_##_name, store_##_name)
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#define BAT_ATTR_STORE_UINT(_name, _min, _max, _post_func) \
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ssize_t store_##_name(struct kobject *kobj, struct attribute *attr, \
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char *buff, size_t count) \
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{ \
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struct net_device *net_dev = kobj_to_netdev(kobj); \
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struct bat_priv *bat_priv = netdev_priv(net_dev); \
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return __store_uint_attr(buff, count, _min, _max, _post_func, \
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attr, &bat_priv->_name, net_dev); \
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}
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#define BAT_ATTR_SHOW_UINT(_name) \
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ssize_t show_##_name(struct kobject *kobj, struct attribute *attr, \
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char *buff) \
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{ \
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struct bat_priv *bat_priv = kobj_to_batpriv(kobj); \
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return sprintf(buff, "%i\n", atomic_read(&bat_priv->_name)); \
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} \
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/* Use this, if you are going to set [name] in bat_priv to unsigned integer
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* values only */
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#define BAT_ATTR_UINT(_name, _mode, _min, _max, _post_func) \
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static BAT_ATTR_STORE_UINT(_name, _min, _max, _post_func) \
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static BAT_ATTR_SHOW_UINT(_name) \
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static BAT_ATTR(_name, _mode, show_##_name, store_##_name)
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static int store_bool_attr(char *buff, size_t count,
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struct net_device *net_dev,
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const char *attr_name, atomic_t *attr)
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{
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int enabled = -1;
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if (buff[count - 1] == '\n')
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buff[count - 1] = '\0';
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if ((strncmp(buff, "1", 2) == 0) ||
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(strncmp(buff, "enable", 7) == 0) ||
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(strncmp(buff, "enabled", 8) == 0))
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enabled = 1;
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if ((strncmp(buff, "0", 2) == 0) ||
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(strncmp(buff, "disable", 8) == 0) ||
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(strncmp(buff, "disabled", 9) == 0))
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enabled = 0;
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if (enabled < 0) {
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bat_info(net_dev,
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"%s: Invalid parameter received: %s\n",
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attr_name, buff);
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return -EINVAL;
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}
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if (atomic_read(attr) == enabled)
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return count;
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bat_info(net_dev, "%s: Changing from: %s to: %s\n", attr_name,
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atomic_read(attr) == 1 ? "enabled" : "disabled",
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enabled == 1 ? "enabled" : "disabled");
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atomic_set(attr, (unsigned)enabled);
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return count;
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}
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static inline ssize_t __store_bool_attr(char *buff, size_t count,
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void (*post_func)(struct net_device *),
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struct attribute *attr,
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atomic_t *attr_store, struct net_device *net_dev)
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{
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int ret;
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ret = store_bool_attr(buff, count, net_dev, attr->name, attr_store);
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if (post_func && ret)
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post_func(net_dev);
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return ret;
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}
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static int store_uint_attr(const char *buff, size_t count,
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struct net_device *net_dev, const char *attr_name,
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unsigned int min, unsigned int max, atomic_t *attr)
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{
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unsigned long uint_val;
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int ret;
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ret = strict_strtoul(buff, 10, &uint_val);
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if (ret) {
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bat_info(net_dev,
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"%s: Invalid parameter received: %s\n",
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attr_name, buff);
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return -EINVAL;
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}
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if (uint_val < min) {
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bat_info(net_dev, "%s: Value is too small: %lu min: %u\n",
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attr_name, uint_val, min);
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return -EINVAL;
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}
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if (uint_val > max) {
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bat_info(net_dev, "%s: Value is too big: %lu max: %u\n",
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attr_name, uint_val, max);
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return -EINVAL;
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}
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if (atomic_read(attr) == uint_val)
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return count;
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bat_info(net_dev, "%s: Changing from: %i to: %lu\n",
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attr_name, atomic_read(attr), uint_val);
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atomic_set(attr, uint_val);
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return count;
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}
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static inline ssize_t __store_uint_attr(const char *buff, size_t count,
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int min, int max,
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void (*post_func)(struct net_device *),
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const struct attribute *attr,
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atomic_t *attr_store, struct net_device *net_dev)
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{
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int ret;
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ret = store_uint_attr(buff, count, net_dev, attr->name,
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min, max, attr_store);
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if (post_func && ret)
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post_func(net_dev);
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return ret;
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}
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static ssize_t show_vis_mode(struct kobject *kobj, struct attribute *attr,
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char *buff)
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{
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struct bat_priv *bat_priv = kobj_to_batpriv(kobj);
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int vis_mode = atomic_read(&bat_priv->vis_mode);
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return sprintf(buff, "%s\n",
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vis_mode == VIS_TYPE_CLIENT_UPDATE ?
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"client" : "server");
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}
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static ssize_t store_vis_mode(struct kobject *kobj, struct attribute *attr,
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char *buff, size_t count)
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{
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struct net_device *net_dev = kobj_to_netdev(kobj);
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struct bat_priv *bat_priv = netdev_priv(net_dev);
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unsigned long val;
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int ret, vis_mode_tmp = -1;
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ret = strict_strtoul(buff, 10, &val);
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if (((count == 2) && (!ret) && (val == VIS_TYPE_CLIENT_UPDATE)) ||
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(strncmp(buff, "client", 6) == 0) ||
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(strncmp(buff, "off", 3) == 0))
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vis_mode_tmp = VIS_TYPE_CLIENT_UPDATE;
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if (((count == 2) && (!ret) && (val == VIS_TYPE_SERVER_SYNC)) ||
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(strncmp(buff, "server", 6) == 0))
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vis_mode_tmp = VIS_TYPE_SERVER_SYNC;
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if (vis_mode_tmp < 0) {
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if (buff[count - 1] == '\n')
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buff[count - 1] = '\0';
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bat_info(net_dev,
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"Invalid parameter for 'vis mode' setting received: "
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"%s\n", buff);
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return -EINVAL;
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}
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if (atomic_read(&bat_priv->vis_mode) == vis_mode_tmp)
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return count;
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bat_info(net_dev, "Changing vis mode from: %s to: %s\n",
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atomic_read(&bat_priv->vis_mode) == VIS_TYPE_CLIENT_UPDATE ?
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"client" : "server", vis_mode_tmp == VIS_TYPE_CLIENT_UPDATE ?
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"client" : "server");
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atomic_set(&bat_priv->vis_mode, (unsigned)vis_mode_tmp);
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return count;
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}
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static void post_gw_deselect(struct net_device *net_dev)
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{
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struct bat_priv *bat_priv = netdev_priv(net_dev);
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gw_deselect(bat_priv);
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}
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static ssize_t show_gw_mode(struct kobject *kobj, struct attribute *attr,
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char *buff)
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{
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struct bat_priv *bat_priv = kobj_to_batpriv(kobj);
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int bytes_written;
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switch (atomic_read(&bat_priv->gw_mode)) {
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case GW_MODE_CLIENT:
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bytes_written = sprintf(buff, "%s\n", GW_MODE_CLIENT_NAME);
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break;
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case GW_MODE_SERVER:
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bytes_written = sprintf(buff, "%s\n", GW_MODE_SERVER_NAME);
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break;
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default:
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bytes_written = sprintf(buff, "%s\n", GW_MODE_OFF_NAME);
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break;
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}
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return bytes_written;
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}
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static ssize_t store_gw_mode(struct kobject *kobj, struct attribute *attr,
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char *buff, size_t count)
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{
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struct net_device *net_dev = kobj_to_netdev(kobj);
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struct bat_priv *bat_priv = netdev_priv(net_dev);
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char *curr_gw_mode_str;
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int gw_mode_tmp = -1;
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if (buff[count - 1] == '\n')
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buff[count - 1] = '\0';
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if (strncmp(buff, GW_MODE_OFF_NAME, strlen(GW_MODE_OFF_NAME)) == 0)
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gw_mode_tmp = GW_MODE_OFF;
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if (strncmp(buff, GW_MODE_CLIENT_NAME,
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strlen(GW_MODE_CLIENT_NAME)) == 0)
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gw_mode_tmp = GW_MODE_CLIENT;
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if (strncmp(buff, GW_MODE_SERVER_NAME,
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strlen(GW_MODE_SERVER_NAME)) == 0)
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gw_mode_tmp = GW_MODE_SERVER;
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if (gw_mode_tmp < 0) {
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bat_info(net_dev,
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"Invalid parameter for 'gw mode' setting received: "
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"%s\n", buff);
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return -EINVAL;
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}
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if (atomic_read(&bat_priv->gw_mode) == gw_mode_tmp)
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return count;
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switch (atomic_read(&bat_priv->gw_mode)) {
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case GW_MODE_CLIENT:
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curr_gw_mode_str = GW_MODE_CLIENT_NAME;
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break;
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case GW_MODE_SERVER:
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curr_gw_mode_str = GW_MODE_SERVER_NAME;
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break;
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default:
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curr_gw_mode_str = GW_MODE_OFF_NAME;
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break;
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}
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bat_info(net_dev, "Changing gw mode from: %s to: %s\n",
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curr_gw_mode_str, buff);
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gw_deselect(bat_priv);
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atomic_set(&bat_priv->gw_mode, (unsigned)gw_mode_tmp);
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return count;
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}
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static ssize_t show_gw_bwidth(struct kobject *kobj, struct attribute *attr,
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char *buff)
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{
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struct bat_priv *bat_priv = kobj_to_batpriv(kobj);
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int down, up;
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int gw_bandwidth = atomic_read(&bat_priv->gw_bandwidth);
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gw_bandwidth_to_kbit(gw_bandwidth, &down, &up);
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return sprintf(buff, "%i%s/%i%s\n",
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(down > 2048 ? down / 1024 : down),
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(down > 2048 ? "MBit" : "KBit"),
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(up > 2048 ? up / 1024 : up),
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(up > 2048 ? "MBit" : "KBit"));
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}
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static ssize_t store_gw_bwidth(struct kobject *kobj, struct attribute *attr,
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char *buff, size_t count)
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{
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struct net_device *net_dev = kobj_to_netdev(kobj);
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if (buff[count - 1] == '\n')
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buff[count - 1] = '\0';
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return gw_bandwidth_set(net_dev, buff, count);
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}
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BAT_ATTR_BOOL(aggregated_ogms, S_IRUGO | S_IWUSR, NULL);
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BAT_ATTR_BOOL(bonding, S_IRUGO | S_IWUSR, NULL);
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BAT_ATTR_BOOL(fragmentation, S_IRUGO | S_IWUSR, update_min_mtu);
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BAT_ATTR_BOOL(ap_isolation, S_IRUGO | S_IWUSR, NULL);
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static BAT_ATTR(vis_mode, S_IRUGO | S_IWUSR, show_vis_mode, store_vis_mode);
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static BAT_ATTR(gw_mode, S_IRUGO | S_IWUSR, show_gw_mode, store_gw_mode);
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BAT_ATTR_UINT(orig_interval, S_IRUGO | S_IWUSR, 2 * JITTER, INT_MAX, NULL);
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BAT_ATTR_UINT(hop_penalty, S_IRUGO | S_IWUSR, 0, TQ_MAX_VALUE, NULL);
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BAT_ATTR_UINT(gw_sel_class, S_IRUGO | S_IWUSR, 1, TQ_MAX_VALUE,
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post_gw_deselect);
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static BAT_ATTR(gw_bandwidth, S_IRUGO | S_IWUSR, show_gw_bwidth,
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store_gw_bwidth);
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#ifdef CONFIG_BATMAN_ADV_DEBUG
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BAT_ATTR_UINT(log_level, S_IRUGO | S_IWUSR, 0, 7, NULL);
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#endif
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static struct bat_attribute *mesh_attrs[] = {
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&bat_attr_aggregated_ogms,
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&bat_attr_bonding,
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&bat_attr_fragmentation,
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&bat_attr_ap_isolation,
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&bat_attr_vis_mode,
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&bat_attr_gw_mode,
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&bat_attr_orig_interval,
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&bat_attr_hop_penalty,
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&bat_attr_gw_sel_class,
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&bat_attr_gw_bandwidth,
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#ifdef CONFIG_BATMAN_ADV_DEBUG
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&bat_attr_log_level,
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#endif
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NULL,
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};
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int sysfs_add_meshif(struct net_device *dev)
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{
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struct kobject *batif_kobject = &dev->dev.kobj;
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struct bat_priv *bat_priv = netdev_priv(dev);
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struct bat_attribute **bat_attr;
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int err;
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bat_priv->mesh_obj = kobject_create_and_add(SYSFS_IF_MESH_SUBDIR,
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batif_kobject);
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if (!bat_priv->mesh_obj) {
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bat_err(dev, "Can't add sysfs directory: %s/%s\n", dev->name,
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SYSFS_IF_MESH_SUBDIR);
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goto out;
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}
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for (bat_attr = mesh_attrs; *bat_attr; ++bat_attr) {
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err = sysfs_create_file(bat_priv->mesh_obj,
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&((*bat_attr)->attr));
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if (err) {
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bat_err(dev, "Can't add sysfs file: %s/%s/%s\n",
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dev->name, SYSFS_IF_MESH_SUBDIR,
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((*bat_attr)->attr).name);
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goto rem_attr;
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}
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}
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return 0;
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rem_attr:
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for (bat_attr = mesh_attrs; *bat_attr; ++bat_attr)
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sysfs_remove_file(bat_priv->mesh_obj, &((*bat_attr)->attr));
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kobject_put(bat_priv->mesh_obj);
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bat_priv->mesh_obj = NULL;
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out:
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return -ENOMEM;
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}
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void sysfs_del_meshif(struct net_device *dev)
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{
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struct bat_priv *bat_priv = netdev_priv(dev);
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struct bat_attribute **bat_attr;
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for (bat_attr = mesh_attrs; *bat_attr; ++bat_attr)
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sysfs_remove_file(bat_priv->mesh_obj, &((*bat_attr)->attr));
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kobject_put(bat_priv->mesh_obj);
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bat_priv->mesh_obj = NULL;
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}
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static ssize_t show_mesh_iface(struct kobject *kobj, struct attribute *attr,
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char *buff)
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{
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struct net_device *net_dev = kobj_to_netdev(kobj);
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struct hard_iface *hard_iface = hardif_get_by_netdev(net_dev);
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ssize_t length;
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if (!hard_iface)
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return 0;
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length = sprintf(buff, "%s\n", hard_iface->if_status == IF_NOT_IN_USE ?
|
|
"none" : hard_iface->soft_iface->name);
|
|
|
|
hardif_free_ref(hard_iface);
|
|
|
|
return length;
|
|
}
|
|
|
|
static ssize_t store_mesh_iface(struct kobject *kobj, struct attribute *attr,
|
|
char *buff, size_t count)
|
|
{
|
|
struct net_device *net_dev = kobj_to_netdev(kobj);
|
|
struct hard_iface *hard_iface = hardif_get_by_netdev(net_dev);
|
|
int status_tmp = -1;
|
|
int ret = count;
|
|
|
|
if (!hard_iface)
|
|
return count;
|
|
|
|
if (buff[count - 1] == '\n')
|
|
buff[count - 1] = '\0';
|
|
|
|
if (strlen(buff) >= IFNAMSIZ) {
|
|
pr_err("Invalid parameter for 'mesh_iface' setting received: "
|
|
"interface name too long '%s'\n", buff);
|
|
hardif_free_ref(hard_iface);
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (strncmp(buff, "none", 4) == 0)
|
|
status_tmp = IF_NOT_IN_USE;
|
|
else
|
|
status_tmp = IF_I_WANT_YOU;
|
|
|
|
if (hard_iface->if_status == status_tmp)
|
|
goto out;
|
|
|
|
if ((hard_iface->soft_iface) &&
|
|
(strncmp(hard_iface->soft_iface->name, buff, IFNAMSIZ) == 0))
|
|
goto out;
|
|
|
|
if (!rtnl_trylock()) {
|
|
ret = -ERESTARTSYS;
|
|
goto out;
|
|
}
|
|
|
|
if (status_tmp == IF_NOT_IN_USE) {
|
|
hardif_disable_interface(hard_iface);
|
|
goto unlock;
|
|
}
|
|
|
|
/* if the interface already is in use */
|
|
if (hard_iface->if_status != IF_NOT_IN_USE)
|
|
hardif_disable_interface(hard_iface);
|
|
|
|
ret = hardif_enable_interface(hard_iface, buff);
|
|
|
|
unlock:
|
|
rtnl_unlock();
|
|
out:
|
|
hardif_free_ref(hard_iface);
|
|
return ret;
|
|
}
|
|
|
|
static ssize_t show_iface_status(struct kobject *kobj, struct attribute *attr,
|
|
char *buff)
|
|
{
|
|
struct net_device *net_dev = kobj_to_netdev(kobj);
|
|
struct hard_iface *hard_iface = hardif_get_by_netdev(net_dev);
|
|
ssize_t length;
|
|
|
|
if (!hard_iface)
|
|
return 0;
|
|
|
|
switch (hard_iface->if_status) {
|
|
case IF_TO_BE_REMOVED:
|
|
length = sprintf(buff, "disabling\n");
|
|
break;
|
|
case IF_INACTIVE:
|
|
length = sprintf(buff, "inactive\n");
|
|
break;
|
|
case IF_ACTIVE:
|
|
length = sprintf(buff, "active\n");
|
|
break;
|
|
case IF_TO_BE_ACTIVATED:
|
|
length = sprintf(buff, "enabling\n");
|
|
break;
|
|
case IF_NOT_IN_USE:
|
|
default:
|
|
length = sprintf(buff, "not in use\n");
|
|
break;
|
|
}
|
|
|
|
hardif_free_ref(hard_iface);
|
|
|
|
return length;
|
|
}
|
|
|
|
static BAT_ATTR(mesh_iface, S_IRUGO | S_IWUSR,
|
|
show_mesh_iface, store_mesh_iface);
|
|
static BAT_ATTR(iface_status, S_IRUGO, show_iface_status, NULL);
|
|
|
|
static struct bat_attribute *batman_attrs[] = {
|
|
&bat_attr_mesh_iface,
|
|
&bat_attr_iface_status,
|
|
NULL,
|
|
};
|
|
|
|
int sysfs_add_hardif(struct kobject **hardif_obj, struct net_device *dev)
|
|
{
|
|
struct kobject *hardif_kobject = &dev->dev.kobj;
|
|
struct bat_attribute **bat_attr;
|
|
int err;
|
|
|
|
*hardif_obj = kobject_create_and_add(SYSFS_IF_BAT_SUBDIR,
|
|
hardif_kobject);
|
|
|
|
if (!*hardif_obj) {
|
|
bat_err(dev, "Can't add sysfs directory: %s/%s\n", dev->name,
|
|
SYSFS_IF_BAT_SUBDIR);
|
|
goto out;
|
|
}
|
|
|
|
for (bat_attr = batman_attrs; *bat_attr; ++bat_attr) {
|
|
err = sysfs_create_file(*hardif_obj, &((*bat_attr)->attr));
|
|
if (err) {
|
|
bat_err(dev, "Can't add sysfs file: %s/%s/%s\n",
|
|
dev->name, SYSFS_IF_BAT_SUBDIR,
|
|
((*bat_attr)->attr).name);
|
|
goto rem_attr;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
|
|
rem_attr:
|
|
for (bat_attr = batman_attrs; *bat_attr; ++bat_attr)
|
|
sysfs_remove_file(*hardif_obj, &((*bat_attr)->attr));
|
|
out:
|
|
return -ENOMEM;
|
|
}
|
|
|
|
void sysfs_del_hardif(struct kobject **hardif_obj)
|
|
{
|
|
kobject_put(*hardif_obj);
|
|
*hardif_obj = NULL;
|
|
}
|
|
|
|
int throw_uevent(struct bat_priv *bat_priv, enum uev_type type,
|
|
enum uev_action action, const char *data)
|
|
{
|
|
int ret = -1;
|
|
struct hard_iface *primary_if = NULL;
|
|
struct kobject *bat_kobj;
|
|
char *uevent_env[4] = { NULL, NULL, NULL, NULL };
|
|
|
|
primary_if = primary_if_get_selected(bat_priv);
|
|
if (!primary_if)
|
|
goto out;
|
|
|
|
bat_kobj = &primary_if->soft_iface->dev.kobj;
|
|
|
|
uevent_env[0] = kmalloc(strlen(UEV_TYPE_VAR) +
|
|
strlen(uev_type_str[type]) + 1,
|
|
GFP_ATOMIC);
|
|
if (!uevent_env[0])
|
|
goto out;
|
|
|
|
sprintf(uevent_env[0], "%s%s", UEV_TYPE_VAR, uev_type_str[type]);
|
|
|
|
uevent_env[1] = kmalloc(strlen(UEV_ACTION_VAR) +
|
|
strlen(uev_action_str[action]) + 1,
|
|
GFP_ATOMIC);
|
|
if (!uevent_env[1])
|
|
goto out;
|
|
|
|
sprintf(uevent_env[1], "%s%s", UEV_ACTION_VAR, uev_action_str[action]);
|
|
|
|
/* If the event is DEL, ignore the data field */
|
|
if (action != UEV_DEL) {
|
|
uevent_env[2] = kmalloc(strlen(UEV_DATA_VAR) +
|
|
strlen(data) + 1, GFP_ATOMIC);
|
|
if (!uevent_env[2])
|
|
goto out;
|
|
|
|
sprintf(uevent_env[2], "%s%s", UEV_DATA_VAR, data);
|
|
}
|
|
|
|
ret = kobject_uevent_env(bat_kobj, KOBJ_CHANGE, uevent_env);
|
|
out:
|
|
kfree(uevent_env[0]);
|
|
kfree(uevent_env[1]);
|
|
kfree(uevent_env[2]);
|
|
|
|
if (primary_if)
|
|
hardif_free_ref(primary_if);
|
|
|
|
if (ret)
|
|
bat_dbg(DBG_BATMAN, bat_priv, "Impossible to send "
|
|
"uevent for (%s,%s,%s) event (err: %d)\n",
|
|
uev_type_str[type], uev_action_str[action],
|
|
(action == UEV_DEL ? "NULL" : data), ret);
|
|
return ret;
|
|
}
|