| /* |
| * Copyright (C) 2010-2012 B.A.T.M.A.N. contributors: |
| * |
| * Marek Lindner |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of version 2 of the GNU General Public |
| * License as published by the Free Software Foundation. |
| * |
| * 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; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
| * 02110-1301, USA |
| * |
| */ |
| |
| #include "main.h" |
| #include "bat_sysfs.h" |
| #include "translation-table.h" |
| #include "originator.h" |
| #include "hard-interface.h" |
| #include "gateway_common.h" |
| #include "gateway_client.h" |
| #include "vis.h" |
| |
| static struct net_device *kobj_to_netdev(struct kobject *obj) |
| { |
| struct device *dev = container_of(obj->parent, struct device, kobj); |
| return to_net_dev(dev); |
| } |
| |
| static struct bat_priv *kobj_to_batpriv(struct kobject *obj) |
| { |
| struct net_device *net_dev = kobj_to_netdev(obj); |
| return netdev_priv(net_dev); |
| } |
| |
| #define UEV_TYPE_VAR "BATTYPE=" |
| #define UEV_ACTION_VAR "BATACTION=" |
| #define UEV_DATA_VAR "BATDATA=" |
| |
| static char *uev_action_str[] = { |
| "add", |
| "del", |
| "change" |
| }; |
| |
| static char *uev_type_str[] = { |
| "gw" |
| }; |
| |
| /* Use this, if you have customized show and store functions */ |
| #define BAT_ATTR(_name, _mode, _show, _store) \ |
| struct bat_attribute bat_attr_##_name = { \ |
| .attr = {.name = __stringify(_name), \ |
| .mode = _mode }, \ |
| .show = _show, \ |
| .store = _store, \ |
| }; |
| |
| #define BAT_ATTR_STORE_BOOL(_name, _post_func) \ |
| ssize_t store_##_name(struct kobject *kobj, struct attribute *attr, \ |
| char *buff, size_t count) \ |
| { \ |
| struct net_device *net_dev = kobj_to_netdev(kobj); \ |
| struct bat_priv *bat_priv = netdev_priv(net_dev); \ |
| return __store_bool_attr(buff, count, _post_func, attr, \ |
| &bat_priv->_name, net_dev); \ |
| } |
| |
| #define BAT_ATTR_SHOW_BOOL(_name) \ |
| ssize_t show_##_name(struct kobject *kobj, struct attribute *attr, \ |
| char *buff) \ |
| { \ |
| struct bat_priv *bat_priv = kobj_to_batpriv(kobj); \ |
| return sprintf(buff, "%s\n", \ |
| atomic_read(&bat_priv->_name) == 0 ? \ |
| "disabled" : "enabled"); \ |
| } \ |
| |
| /* Use this, if you are going to turn a [name] in bat_priv on or off */ |
| #define BAT_ATTR_BOOL(_name, _mode, _post_func) \ |
| static BAT_ATTR_STORE_BOOL(_name, _post_func) \ |
| static BAT_ATTR_SHOW_BOOL(_name) \ |
| static BAT_ATTR(_name, _mode, show_##_name, store_##_name) |
| |
| |
| #define BAT_ATTR_STORE_UINT(_name, _min, _max, _post_func) \ |
| ssize_t store_##_name(struct kobject *kobj, struct attribute *attr, \ |
| char *buff, size_t count) \ |
| { \ |
| struct net_device *net_dev = kobj_to_netdev(kobj); \ |
| struct bat_priv *bat_priv = netdev_priv(net_dev); \ |
| return __store_uint_attr(buff, count, _min, _max, _post_func, \ |
| attr, &bat_priv->_name, net_dev); \ |
| } |
| |
| #define BAT_ATTR_SHOW_UINT(_name) \ |
| ssize_t show_##_name(struct kobject *kobj, struct attribute *attr, \ |
| char *buff) \ |
| { \ |
| struct bat_priv *bat_priv = kobj_to_batpriv(kobj); \ |
| return sprintf(buff, "%i\n", atomic_read(&bat_priv->_name)); \ |
| } \ |
| |
| /* Use this, if you are going to set [name] in bat_priv to unsigned integer |
| * values only */ |
| #define BAT_ATTR_UINT(_name, _mode, _min, _max, _post_func) \ |
| static BAT_ATTR_STORE_UINT(_name, _min, _max, _post_func) \ |
| static BAT_ATTR_SHOW_UINT(_name) \ |
| static BAT_ATTR(_name, _mode, show_##_name, store_##_name) |
| |
| |
| static int store_bool_attr(char *buff, size_t count, |
| struct net_device *net_dev, |
| const char *attr_name, atomic_t *attr) |
| { |
| int enabled = -1; |
| |
| if (buff[count - 1] == '\n') |
| buff[count - 1] = '\0'; |
| |
| if ((strncmp(buff, "1", 2) == 0) || |
| (strncmp(buff, "enable", 7) == 0) || |
| (strncmp(buff, "enabled", 8) == 0)) |
| enabled = 1; |
| |
| if ((strncmp(buff, "0", 2) == 0) || |
| (strncmp(buff, "disable", 8) == 0) || |
| (strncmp(buff, "disabled", 9) == 0)) |
| enabled = 0; |
| |
| if (enabled < 0) { |
| bat_info(net_dev, |
| "%s: Invalid parameter received: %s\n", |
| attr_name, buff); |
| return -EINVAL; |
| } |
| |
| if (atomic_read(attr) == enabled) |
| return count; |
| |
| bat_info(net_dev, "%s: Changing from: %s to: %s\n", attr_name, |
| atomic_read(attr) == 1 ? "enabled" : "disabled", |
| enabled == 1 ? "enabled" : "disabled"); |
| |
| atomic_set(attr, (unsigned)enabled); |
| return count; |
| } |
| |
| static inline ssize_t __store_bool_attr(char *buff, size_t count, |
| void (*post_func)(struct net_device *), |
| struct attribute *attr, |
| atomic_t *attr_store, struct net_device *net_dev) |
| { |
| int ret; |
| |
| ret = store_bool_attr(buff, count, net_dev, attr->name, attr_store); |
| if (post_func && ret) |
| post_func(net_dev); |
| |
| return ret; |
| } |
| |
| static int store_uint_attr(const char *buff, size_t count, |
| struct net_device *net_dev, const char *attr_name, |
| unsigned int min, unsigned int max, atomic_t *attr) |
| { |
| unsigned long uint_val; |
| int ret; |
| |
| ret = kstrtoul(buff, 10, &uint_val); |
| if (ret) { |
| bat_info(net_dev, |
| "%s: Invalid parameter received: %s\n", |
| attr_name, buff); |
| return -EINVAL; |
| } |
| |
| if (uint_val < min) { |
| bat_info(net_dev, "%s: Value is too small: %lu min: %u\n", |
| attr_name, uint_val, min); |
| return -EINVAL; |
| } |
| |
| if (uint_val > max) { |
| bat_info(net_dev, "%s: Value is too big: %lu max: %u\n", |
| attr_name, uint_val, max); |
| return -EINVAL; |
| } |
| |
| if (atomic_read(attr) == uint_val) |
| return count; |
| |
| bat_info(net_dev, "%s: Changing from: %i to: %lu\n", |
| attr_name, atomic_read(attr), uint_val); |
| |
| atomic_set(attr, uint_val); |
| return count; |
| } |
| |
| static inline ssize_t __store_uint_attr(const char *buff, size_t count, |
| int min, int max, |
| void (*post_func)(struct net_device *), |
| const struct attribute *attr, |
| atomic_t *attr_store, struct net_device *net_dev) |
| { |
| int ret; |
| |
| ret = store_uint_attr(buff, count, net_dev, attr->name, |
| min, max, attr_store); |
| if (post_func && ret) |
| post_func(net_dev); |
| |
| return ret; |
| } |
| |
| static ssize_t show_vis_mode(struct kobject *kobj, struct attribute *attr, |
| char *buff) |
| { |
| struct bat_priv *bat_priv = kobj_to_batpriv(kobj); |
| int vis_mode = atomic_read(&bat_priv->vis_mode); |
| |
| return sprintf(buff, "%s\n", |
| vis_mode == VIS_TYPE_CLIENT_UPDATE ? |
| "client" : "server"); |
| } |
| |
| static ssize_t store_vis_mode(struct kobject *kobj, struct attribute *attr, |
| char *buff, size_t count) |
| { |
| struct net_device *net_dev = kobj_to_netdev(kobj); |
| struct bat_priv *bat_priv = netdev_priv(net_dev); |
| unsigned long val; |
| int ret, vis_mode_tmp = -1; |
| |
| ret = kstrtoul(buff, 10, &val); |
| |
| if (((count == 2) && (!ret) && (val == VIS_TYPE_CLIENT_UPDATE)) || |
| (strncmp(buff, "client", 6) == 0) || |
| (strncmp(buff, "off", 3) == 0)) |
| vis_mode_tmp = VIS_TYPE_CLIENT_UPDATE; |
| |
| if (((count == 2) && (!ret) && (val == VIS_TYPE_SERVER_SYNC)) || |
| (strncmp(buff, "server", 6) == 0)) |
| vis_mode_tmp = VIS_TYPE_SERVER_SYNC; |
| |
| if (vis_mode_tmp < 0) { |
| if (buff[count - 1] == '\n') |
| buff[count - 1] = '\0'; |
| |
| bat_info(net_dev, |
| "Invalid parameter for 'vis mode' setting received: %s\n", |
| buff); |
| return -EINVAL; |
| } |
| |
| if (atomic_read(&bat_priv->vis_mode) == vis_mode_tmp) |
| return count; |
| |
| bat_info(net_dev, "Changing vis mode from: %s to: %s\n", |
| atomic_read(&bat_priv->vis_mode) == VIS_TYPE_CLIENT_UPDATE ? |
| "client" : "server", vis_mode_tmp == VIS_TYPE_CLIENT_UPDATE ? |
| "client" : "server"); |
| |
| atomic_set(&bat_priv->vis_mode, (unsigned)vis_mode_tmp); |
| return count; |
| } |
| |
| static ssize_t show_bat_algo(struct kobject *kobj, struct attribute *attr, |
| char *buff) |
| { |
| struct bat_priv *bat_priv = kobj_to_batpriv(kobj); |
| return sprintf(buff, "%s\n", bat_priv->bat_algo_ops->name); |
| } |
| |
| static void post_gw_deselect(struct net_device *net_dev) |
| { |
| struct bat_priv *bat_priv = netdev_priv(net_dev); |
| gw_deselect(bat_priv); |
| } |
| |
| static ssize_t show_gw_mode(struct kobject *kobj, struct attribute *attr, |
| char *buff) |
| { |
| struct bat_priv *bat_priv = kobj_to_batpriv(kobj); |
| int bytes_written; |
| |
| switch (atomic_read(&bat_priv->gw_mode)) { |
| case GW_MODE_CLIENT: |
| bytes_written = sprintf(buff, "%s\n", GW_MODE_CLIENT_NAME); |
| break; |
| case GW_MODE_SERVER: |
| bytes_written = sprintf(buff, "%s\n", GW_MODE_SERVER_NAME); |
| break; |
| default: |
| bytes_written = sprintf(buff, "%s\n", GW_MODE_OFF_NAME); |
| break; |
| } |
| |
| return bytes_written; |
| } |
| |
| static ssize_t store_gw_mode(struct kobject *kobj, struct attribute *attr, |
| char *buff, size_t count) |
| { |
| struct net_device *net_dev = kobj_to_netdev(kobj); |
| struct bat_priv *bat_priv = netdev_priv(net_dev); |
| char *curr_gw_mode_str; |
| int gw_mode_tmp = -1; |
| |
| if (buff[count - 1] == '\n') |
| buff[count - 1] = '\0'; |
| |
| if (strncmp(buff, GW_MODE_OFF_NAME, strlen(GW_MODE_OFF_NAME)) == 0) |
| gw_mode_tmp = GW_MODE_OFF; |
| |
| if (strncmp(buff, GW_MODE_CLIENT_NAME, |
| strlen(GW_MODE_CLIENT_NAME)) == 0) |
| gw_mode_tmp = GW_MODE_CLIENT; |
| |
| if (strncmp(buff, GW_MODE_SERVER_NAME, |
| strlen(GW_MODE_SERVER_NAME)) == 0) |
| gw_mode_tmp = GW_MODE_SERVER; |
| |
| if (gw_mode_tmp < 0) { |
| bat_info(net_dev, |
| "Invalid parameter for 'gw mode' setting received: %s\n", |
| buff); |
| return -EINVAL; |
| } |
| |
| if (atomic_read(&bat_priv->gw_mode) == gw_mode_tmp) |
| return count; |
| |
| switch (atomic_read(&bat_priv->gw_mode)) { |
| case GW_MODE_CLIENT: |
| curr_gw_mode_str = GW_MODE_CLIENT_NAME; |
| break; |
| case GW_MODE_SERVER: |
| curr_gw_mode_str = GW_MODE_SERVER_NAME; |
| break; |
| default: |
| curr_gw_mode_str = GW_MODE_OFF_NAME; |
| break; |
| } |
| |
| bat_info(net_dev, "Changing gw mode from: %s to: %s\n", |
| curr_gw_mode_str, buff); |
| |
| gw_deselect(bat_priv); |
| atomic_set(&bat_priv->gw_mode, (unsigned)gw_mode_tmp); |
| return count; |
| } |
| |
| static ssize_t show_gw_bwidth(struct kobject *kobj, struct attribute *attr, |
| char *buff) |
| { |
| struct bat_priv *bat_priv = kobj_to_batpriv(kobj); |
| int down, up; |
| int gw_bandwidth = atomic_read(&bat_priv->gw_bandwidth); |
| |
| gw_bandwidth_to_kbit(gw_bandwidth, &down, &up); |
| return sprintf(buff, "%i%s/%i%s\n", |
| (down > 2048 ? down / 1024 : down), |
| (down > 2048 ? "MBit" : "KBit"), |
| (up > 2048 ? up / 1024 : up), |
| (up > 2048 ? "MBit" : "KBit")); |
| } |
| |
| static ssize_t store_gw_bwidth(struct kobject *kobj, struct attribute *attr, |
| char *buff, size_t count) |
| { |
| struct net_device *net_dev = kobj_to_netdev(kobj); |
| |
| if (buff[count - 1] == '\n') |
| buff[count - 1] = '\0'; |
| |
| return gw_bandwidth_set(net_dev, buff, count); |
| } |
| |
| BAT_ATTR_BOOL(aggregated_ogms, S_IRUGO | S_IWUSR, NULL); |
| BAT_ATTR_BOOL(bonding, S_IRUGO | S_IWUSR, NULL); |
| #ifdef CONFIG_BATMAN_ADV_BLA |
| BAT_ATTR_BOOL(bridge_loop_avoidance, S_IRUGO | S_IWUSR, NULL); |
| #endif |
| BAT_ATTR_BOOL(fragmentation, S_IRUGO | S_IWUSR, update_min_mtu); |
| BAT_ATTR_BOOL(ap_isolation, S_IRUGO | S_IWUSR, NULL); |
| static BAT_ATTR(vis_mode, S_IRUGO | S_IWUSR, show_vis_mode, store_vis_mode); |
| static BAT_ATTR(routing_algo, S_IRUGO, show_bat_algo, NULL); |
| static BAT_ATTR(gw_mode, S_IRUGO | S_IWUSR, show_gw_mode, store_gw_mode); |
| BAT_ATTR_UINT(orig_interval, S_IRUGO | S_IWUSR, 2 * JITTER, INT_MAX, NULL); |
| BAT_ATTR_UINT(hop_penalty, S_IRUGO | S_IWUSR, 0, TQ_MAX_VALUE, NULL); |
| BAT_ATTR_UINT(gw_sel_class, S_IRUGO | S_IWUSR, 1, TQ_MAX_VALUE, |
| post_gw_deselect); |
| static BAT_ATTR(gw_bandwidth, S_IRUGO | S_IWUSR, show_gw_bwidth, |
| store_gw_bwidth); |
| #ifdef CONFIG_BATMAN_ADV_DEBUG |
| BAT_ATTR_UINT(log_level, S_IRUGO | S_IWUSR, 0, 15, NULL); |
| #endif |
| |
| static struct bat_attribute *mesh_attrs[] = { |
| &bat_attr_aggregated_ogms, |
| &bat_attr_bonding, |
| #ifdef CONFIG_BATMAN_ADV_BLA |
| &bat_attr_bridge_loop_avoidance, |
| #endif |
| &bat_attr_fragmentation, |
| &bat_attr_ap_isolation, |
| &bat_attr_vis_mode, |
| &bat_attr_routing_algo, |
| &bat_attr_gw_mode, |
| &bat_attr_orig_interval, |
| &bat_attr_hop_penalty, |
| &bat_attr_gw_sel_class, |
| &bat_attr_gw_bandwidth, |
| #ifdef CONFIG_BATMAN_ADV_DEBUG |
| &bat_attr_log_level, |
| #endif |
| NULL, |
| }; |
| |
| int sysfs_add_meshif(struct net_device *dev) |
| { |
| struct kobject *batif_kobject = &dev->dev.kobj; |
| struct bat_priv *bat_priv = netdev_priv(dev); |
| struct bat_attribute **bat_attr; |
| int err; |
| |
| bat_priv->mesh_obj = kobject_create_and_add(SYSFS_IF_MESH_SUBDIR, |
| batif_kobject); |
| if (!bat_priv->mesh_obj) { |
| bat_err(dev, "Can't add sysfs directory: %s/%s\n", dev->name, |
| SYSFS_IF_MESH_SUBDIR); |
| goto out; |
| } |
| |
| for (bat_attr = mesh_attrs; *bat_attr; ++bat_attr) { |
| err = sysfs_create_file(bat_priv->mesh_obj, |
| &((*bat_attr)->attr)); |
| if (err) { |
| bat_err(dev, "Can't add sysfs file: %s/%s/%s\n", |
| dev->name, SYSFS_IF_MESH_SUBDIR, |
| ((*bat_attr)->attr).name); |
| goto rem_attr; |
| } |
| } |
| |
| return 0; |
| |
| rem_attr: |
| for (bat_attr = mesh_attrs; *bat_attr; ++bat_attr) |
| sysfs_remove_file(bat_priv->mesh_obj, &((*bat_attr)->attr)); |
| |
| kobject_put(bat_priv->mesh_obj); |
| bat_priv->mesh_obj = NULL; |
| out: |
| return -ENOMEM; |
| } |
| |
| void sysfs_del_meshif(struct net_device *dev) |
| { |
| struct bat_priv *bat_priv = netdev_priv(dev); |
| struct bat_attribute **bat_attr; |
| |
| for (bat_attr = mesh_attrs; *bat_attr; ++bat_attr) |
| sysfs_remove_file(bat_priv->mesh_obj, &((*bat_attr)->attr)); |
| |
| kobject_put(bat_priv->mesh_obj); |
| bat_priv->mesh_obj = NULL; |
| } |
| |
| static ssize_t show_mesh_iface(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; |
| |
| 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; |
| } |