diff options
Diffstat (limited to 'package/mac80211/src/wireless')
| -rw-r--r-- | package/mac80211/src/wireless/Makefile | 3 | ||||
| -rw-r--r-- | package/mac80211/src/wireless/core.c | 11 | ||||
| -rw-r--r-- | package/mac80211/src/wireless/nl80211.c | 919 | ||||
| -rw-r--r-- | package/mac80211/src/wireless/radiotap.c | 261 | ||||
| -rw-r--r-- | package/mac80211/src/wireless/sysfs.c | 52 | ||||
| -rw-r--r-- | package/mac80211/src/wireless/wext.c | 1509 |
6 files changed, 450 insertions, 2305 deletions
diff --git a/package/mac80211/src/wireless/Makefile b/package/mac80211/src/wireless/Makefile index e746b3af8..5664c2cfd 100644 --- a/package/mac80211/src/wireless/Makefile +++ b/package/mac80211/src/wireless/Makefile @@ -1,5 +1,4 @@ -obj-$(CONFIG_WIRELESS_EXT) += wext.o obj-$(CONFIG_CFG80211) += cfg80211.o -cfg80211-y += core.o sysfs.o +cfg80211-y += core.o sysfs.o radiotap.o cfg80211-$(CONFIG_NL80211) += nl80211.o diff --git a/package/mac80211/src/wireless/core.c b/package/mac80211/src/wireless/core.c index 46e5ae070..35b79bee3 100644 --- a/package/mac80211/src/wireless/core.c +++ b/package/mac80211/src/wireless/core.c @@ -162,10 +162,15 @@ int cfg80211_dev_rename(struct cfg80211_registered_device *rdev, /* this will check for collisions */ result = device_rename(&rdev->wiphy.dev, newname); - if (!result) + if (result) return result; - /* TODO: do debugfs rename! */ + if (!debugfs_rename(rdev->wiphy.debugfsdir->d_parent, + rdev->wiphy.debugfsdir, + rdev->wiphy.debugfsdir->d_parent, + newname)) + printk(KERN_ERR "cfg80211: failed to rename debugfs dir to %s!\n", + newname); nl80211_notify_dev_rename(rdev); @@ -355,7 +360,7 @@ out_fail_notifier: out_fail_sysfs: return err; } -module_init(cfg80211_init); +subsys_initcall(cfg80211_init); static void cfg80211_exit(void) { diff --git a/package/mac80211/src/wireless/nl80211.c b/package/mac80211/src/wireless/nl80211.c index ffbe6288a..58717f303 100644 --- a/package/mac80211/src/wireless/nl80211.c +++ b/package/mac80211/src/wireless/nl80211.c @@ -1,7 +1,7 @@ /* * This is the new netlink-based wireless configuration interface. * - * Copyright 2006 Johannes Berg <johannes@sipsolutions.net> + * Copyright 2006, 2007 Johannes Berg <johannes@sipsolutions.net> */ #include <linux/if.h> @@ -13,6 +13,7 @@ #include <linux/ieee80211.h> #include <linux/nl80211.h> #include <linux/rtnetlink.h> +#include <linux/netlink.h> #include <net/genetlink.h> #include <net/cfg80211.h> #include "core.h" @@ -27,22 +28,6 @@ static struct genl_family nl80211_fam = { .maxattr = NL80211_ATTR_MAX, }; -/* internal helper: validate an information element attribute */ -static int check_information_element(struct nlattr *nla) -{ - int len = nla_len(nla); - u8 *data = nla_data(nla); - int elementlen; - - while (len >= 2) { - /* 1 byte ID, 1 byte len, `len' bytes data */ - elementlen = *(data+1) + 2; - data += elementlen; - len -= elementlen; - } - return len ? -EINVAL : 0; -} - /* internal helper: get drv and dev */ static int get_drv_dev_by_info_ifindex(struct genl_info *info, struct cfg80211_registered_device **drv, @@ -55,7 +40,7 @@ static int get_drv_dev_by_info_ifindex(struct genl_info *info, ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]); *dev = dev_get_by_index(ifindex); - if (!dev) + if (!*dev) return -ENODEV; *drv = cfg80211_get_dev_from_ifindex(ifindex); @@ -69,287 +54,194 @@ static int get_drv_dev_by_info_ifindex(struct genl_info *info, /* policy for the attributes */ static struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] __read_mostly = { - [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 }, - [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 }, [NL80211_ATTR_WIPHY] = { .type = NLA_U32 }, [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING, .len = BUS_ID_SIZE-1 }, + [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 }, - [NL80211_ATTR_BSSID] = { .len = ETH_ALEN }, - [NL80211_ATTR_SSID] = { .type = NLA_BINARY, - .len = IEEE80211_MAX_SSID_LEN }, - [NL80211_ATTR_CHANNEL] = { .type = NLA_U32 }, - [NL80211_ATTR_PHYMODE] = { .type = NLA_U32 }, - [NL80211_ATTR_CHANNEL_LIST] = { .type = NLA_NESTED }, - [NL80211_ATTR_BSS_LIST] = { .type = NLA_NESTED }, - [NL80211_ATTR_BSSTYPE] = { .type = NLA_U32 }, - [NL80211_ATTR_BEACON_PERIOD] = { .type = NLA_U32 }, - [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 }, - [NL80211_ATTR_TIMESTAMP] = { .type = NLA_U64 }, - [NL80211_ATTR_IE] = { .type = NLA_BINARY, .len = NL80211_MAX_IE_LEN }, - [NL80211_ATTR_AUTH_ALGORITHM] = { .type = NLA_U32 }, - [NL80211_ATTR_TIMEOUT_TU] = { .type = NLA_U32 }, - [NL80211_ATTR_REASON_CODE] = { .type = NLA_U32 }, - [NL80211_ATTR_ASSOCIATION_ID] = { .type = NLA_U16 }, - [NL80211_ATTR_DEAUTHENTICATED] = { .type = NLA_FLAG }, - [NL80211_ATTR_RX_SENSITIVITY] = { .type = NLA_U32 }, - [NL80211_ATTR_TRANSMIT_POWER] = { .type = NLA_U32 }, - [NL80211_ATTR_FRAG_THRESHOLD] = { .type = NLA_U32 }, - [NL80211_ATTR_FLAG_SCAN_ACTIVE] = { .type = NLA_FLAG }, - [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY }, - [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY }, - [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY, - .len = WLAN_MAX_KEY_LEN }, - [NL80211_ATTR_KEY_ID] = { .type = NLA_U32 }, - [NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 }, - [NL80211_ATTR_MAC] = { .len = ETH_ALEN }, - [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 }, + [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 }, + [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 }, }; -/* netlink command implementations */ +/* message building helper */ +static inline void *nl80211hdr_put(struct sk_buff *skb, u32 pid, u32 seq, + int flags, u8 cmd) +{ + /* since there is no private header just add the generic one */ + return genlmsg_put(skb, pid, seq, &nl80211_fam, flags, cmd); +} -#define CHECK_CMD(ptr, cmd) \ - if (drv->ops->ptr) \ - NLA_PUT_FLAG(msg, NL80211_CMD_##cmd); +/* netlink command implementations */ -static int nl80211_get_cmdlist(struct sk_buff *skb, struct genl_info *info) +static int nl80211_send_wiphy(struct sk_buff *msg, u32 pid, u32 seq, int flags, + struct cfg80211_registered_device *dev) { - struct cfg80211_registered_device *drv; - struct sk_buff *msg; void *hdr; - int err; - struct nlattr *start; - drv = cfg80211_get_dev_from_info(info); - if (IS_ERR(drv)) - return PTR_ERR(drv); - - hdr = nl80211msg_new(&msg, info->snd_pid, info->snd_seq, 0, - NL80211_CMD_NEW_CMDLIST); - if (IS_ERR(hdr)) { - err = PTR_ERR(hdr); - goto put_drv; - } + hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_WIPHY); + if (!hdr) + return -1; - NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, drv->idx); + NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, dev->idx); + NLA_PUT_STRING(msg, NL80211_ATTR_WIPHY_NAME, wiphy_name(&dev->wiphy)); + return genlmsg_end(msg, hdr); - start = nla_nest_start(msg, NL80211_ATTR_CMDS); - if (!start) - goto nla_put_failure; - - /* unconditionally allow some common commands we handle centrally - * or where we require the implementation */ - NLA_PUT_FLAG(msg, NL80211_CMD_GET_CMDLIST); - NLA_PUT_FLAG(msg, NL80211_CMD_GET_WIPHYS); - NLA_PUT_FLAG(msg, NL80211_CMD_GET_INTERFACES); - NLA_PUT_FLAG(msg, NL80211_CMD_RENAME_WIPHY); - - CHECK_CMD(add_virtual_intf, ADD_VIRTUAL_INTERFACE); - CHECK_CMD(del_virtual_intf, DEL_VIRTUAL_INTERFACE); - CHECK_CMD(associate, ASSOCIATE); - CHECK_CMD(disassociate, DISASSOCIATE); - CHECK_CMD(deauth, DEAUTH); - CHECK_CMD(initiate_scan, INITIATE_SCAN); - CHECK_CMD(get_association, GET_ASSOCIATION); - CHECK_CMD(get_auth_list, GET_AUTH_LIST); - CHECK_CMD(add_key, ADD_KEY); - CHECK_CMD(del_key, DEL_KEY); + nla_put_failure: + return genlmsg_cancel(msg, hdr); +} - nla_nest_end(msg, start); +static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb) +{ + int idx = 0; + int start = cb->args[0]; + struct cfg80211_registered_device *dev; - genlmsg_end(msg, hdr); + mutex_lock(&cfg80211_drv_mutex); + list_for_each_entry(dev, &cfg80211_drv_list, list) { + if (++idx < start) + continue; + if (nl80211_send_wiphy(skb, NETLINK_CB(cb->skb).pid, + cb->nlh->nlmsg_seq, NLM_F_MULTI, + dev) < 0) + break; + } + mutex_unlock(&cfg80211_drv_mutex); - err = genlmsg_unicast(msg, info->snd_pid); - goto put_drv; + cb->args[0] = idx; - nla_put_failure: - err = -ENOBUFS; - nlmsg_free(msg); - put_drv: - cfg80211_put_dev(drv); - return err; + return skb->len; } -#undef CHECK_CMD -static int nl80211_get_wiphys(struct sk_buff *skb, struct genl_info *info) +static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info) { struct sk_buff *msg; - void *hdr; - struct nlattr *start, *indexstart; - struct cfg80211_registered_device *drv; - int idx = 1; - - hdr = nl80211msg_new(&msg, info->snd_pid, info->snd_seq, 0, - NL80211_CMD_NEW_WIPHYS); - if (IS_ERR(hdr)) - return PTR_ERR(hdr); + struct cfg80211_registered_device *dev; - start = nla_nest_start(msg, NL80211_ATTR_WIPHY_LIST); - if (!start) - goto nla_outer_nest_failure; + dev = cfg80211_get_dev_from_info(info); + if (IS_ERR(dev)) + return PTR_ERR(dev); - mutex_lock(&cfg80211_drv_mutex); - list_for_each_entry(drv, &cfg80211_drv_list, list) { - indexstart = nla_nest_start(msg, idx++); - if (!indexstart) - goto nla_put_failure; - NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, drv->idx); - nla_nest_end(msg, indexstart); - } - mutex_unlock(&cfg80211_drv_mutex); + msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL); + if (!msg) + goto out_err; - nla_nest_end(msg, start); + if (nl80211_send_wiphy(msg, info->snd_pid, info->snd_seq, 0, dev) < 0) + goto out_free; - genlmsg_end(msg, hdr); + cfg80211_put_dev(dev); return genlmsg_unicast(msg, info->snd_pid); - nla_put_failure: - mutex_unlock(&cfg80211_drv_mutex); - nla_outer_nest_failure: + out_free: nlmsg_free(msg); + out_err: + cfg80211_put_dev(dev); return -ENOBUFS; } -static int addifidx(struct net_device *dev, struct sk_buff *skb, int *idx) +static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info) { - int err = -ENOBUFS; - struct nlattr *start; - - dev_hold(dev); + struct cfg80211_registered_device *rdev; + int result; - start = nla_nest_start(skb, *idx++); - if (!start) - goto nla_put_failure; + if (!info->attrs[NL80211_ATTR_WIPHY_NAME]) + return -EINVAL; - NLA_PUT_U32(skb, NL80211_ATTR_IFINDEX, dev->ifindex); - NLA_PUT_STRING(skb, NL80211_ATTR_IFNAME, dev->name); + rdev = cfg80211_get_dev_from_info(info); + if (IS_ERR(rdev)) + return PTR_ERR(rdev); - nla_nest_end(skb, start); - err = 0; + result = cfg80211_dev_rename(rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME])); - nla_put_failure: - dev_put(dev); - return err; + cfg80211_put_dev(rdev); + return result; } -static int nl80211_get_intfs(struct sk_buff *skb, struct genl_info *info) + +static int nl80211_send_iface(struct sk_buff *msg, u32 pid, u32 seq, int flags, + struct net_device *dev) { - struct cfg80211_registered_device *drv; - struct sk_buff *msg; void *hdr; - int err, array_idx; - struct nlattr *start; - struct wireless_dev *wdev; - - drv = cfg80211_get_dev_from_info(info); - if (IS_ERR(drv)) - return PTR_ERR(drv); - - hdr = nl80211msg_new(&msg, info->snd_pid, info->snd_seq, 0, - NL80211_CMD_NEW_INTERFACES); - if (IS_ERR(hdr)) { - err = PTR_ERR(hdr); - goto put_drv; - } - NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, drv->idx); + hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_INTERFACE); + if (!hdr) + return -1; - start = nla_nest_start(msg, NL80211_ATTR_INTERFACE_LIST); - if (!start) { - err = -ENOBUFS; - goto msg_free; - } - - array_idx = 1; - err = 0; - mutex_lock(&drv->devlist_mtx); - list_for_each_entry(wdev, &drv->netdev_list, list) { - err = addifidx(wdev->netdev, msg, &array_idx); - if (err) - break; - } - mutex_unlock(&drv->devlist_mtx); - if (err) - goto msg_free; - - nla_nest_end(msg, start); - - genlmsg_end(msg, hdr); - - err = genlmsg_unicast(msg, info->snd_pid); - goto put_drv; + NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex); + NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, dev->name); + /* TODO: interface type */ + return genlmsg_end(msg, hdr); nla_put_failure: - err = -ENOBUFS; - msg_free: - nlmsg_free(msg); - put_drv: - cfg80211_put_dev(drv); - return err; + return genlmsg_cancel(msg, hdr); } -static int nl80211_add_virt_intf(struct sk_buff *skb, struct genl_info *info) +static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb) { - struct cfg80211_registered_device *drv; - int err; - enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED; - - if (!info->attrs[NL80211_ATTR_IFNAME]) - return -EINVAL; + int wp_idx = 0; + int if_idx = 0; + int wp_start = cb->args[0]; + int if_start = cb->args[1]; + struct cfg80211_registered_device *dev; + struct wireless_dev *wdev; - if (info->attrs[NL80211_ATTR_IFTYPE]) { - type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]); - if (type > NL80211_IFTYPE_MAX) - return -EINVAL; + mutex_lock(&cfg80211_drv_mutex); + list_for_each_entry(dev, &cfg80211_drv_list, list) { + if (++wp_idx < wp_start) + continue; + if_idx = 0; + + mutex_lock(&dev->devlist_mtx); + list_for_each_entry(wdev, &dev->netdev_list, list) { + if (++if_idx < if_start) + continue; + if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).pid, + cb->nlh->nlmsg_seq, NLM_F_MULTI, + wdev->netdev) < 0) + break; + } + mutex_unlock(&dev->devlist_mtx); } + mutex_unlock(&cfg80211_drv_mutex); - drv = cfg80211_get_dev_from_info(info); - if (IS_ERR(drv)) - return PTR_ERR(drv); - - if (!drv->ops->add_virtual_intf) { - err = -EOPNOTSUPP; - goto unlock; - } + cb->args[0] = wp_idx; + cb->args[1] = if_idx; - rtnl_lock(); - err = drv->ops->add_virtual_intf(&drv->wiphy, - nla_data(info->attrs[NL80211_ATTR_IFNAME]), type); - rtnl_unlock(); - - unlock: - cfg80211_put_dev(drv); - return err; + return skb->len; } -static int nl80211_del_virt_intf(struct sk_buff *skb, struct genl_info *info) +static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info) { - struct cfg80211_registered_device *drv; - int ifindex, err; - struct net_device *dev; + struct sk_buff *msg; + struct cfg80211_registered_device *dev; + struct net_device *netdev; + int err; - err = get_drv_dev_by_info_ifindex(info, &drv, &dev); + err = get_drv_dev_by_info_ifindex(info, &dev, &netdev); if (err) return err; - ifindex = dev->ifindex; - dev_put(dev); - if (!drv->ops->del_virtual_intf) { - err = -EOPNOTSUPP; - goto out; - } + msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL); + if (!msg) + goto out_err; - rtnl_lock(); - err = drv->ops->del_virtual_intf(&drv->wiphy, ifindex); - rtnl_unlock(); + if (nl80211_send_iface(msg, info->snd_pid, info->snd_seq, 0, netdev) < 0) + goto out_free; - out: - cfg80211_put_dev(drv); - return err; + dev_put(netdev); + cfg80211_put_dev(dev); + + return genlmsg_unicast(msg, info->snd_pid); + + out_free: + nlmsg_free(msg); + out_err: + dev_put(netdev); + cfg80211_put_dev(dev); + return -ENOBUFS; } -static int nl80211_change_virt_intf(struct sk_buff *skb, struct genl_info *info) +static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info) { struct cfg80211_registered_device *drv; int err, ifindex; @@ -383,588 +275,128 @@ static int nl80211_change_virt_intf(struct sk_buff *skb, struct genl_info *info) return err; } -static int nl80211_get_association(struct sk_buff *skb, struct genl_info *info) +static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info) { struct cfg80211_registered_device *drv; int err; - struct net_device *dev; - struct sk_buff *msg; - void *hdr; - u8 bssid[ETH_ALEN]; - - err = get_drv_dev_by_info_ifindex(info, &drv, &dev); - if (err) - return err; - - if (!drv->ops->get_association) { - err = -EOPNOTSUPP; - goto out_put_drv; - } - - rtnl_lock(); - err = drv->ops->get_association(&drv->wiphy, dev, bssid); - rtnl_unlock(); - if (err < 0) - goto out_put_drv; - - hdr = nl80211msg_new(&msg, info->snd_pid, info->snd_seq, 0, - NL80211_CMD_ASSOCIATION_CHANGED); - - if (IS_ERR(hdr)) { - err = PTR_ERR(hdr); - goto out_put_drv; - } - - NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex); - if (err == 1) - NLA_PUT(msg, NL80211_ATTR_BSSID, ETH_ALEN, bssid); - - genlmsg_end(msg, hdr); - err = genlmsg_unicast(msg, info->snd_pid); - goto out_put_drv; - - nla_put_failure: - err = -ENOBUFS; - nlmsg_free(msg); - out_put_drv: - cfg80211_put_dev(drv); - dev_put(dev); - return err; -} - -static int nl80211_associate(struct sk_buff *skb, struct genl_info *info) -{ - struct cfg80211_registered_device *drv; - int err; - struct net_device *dev; - struct association_params assoc_params; - - memset(&assoc_params, 0, sizeof(assoc_params)); - - err = get_drv_dev_by_info_ifindex(info, &drv, &dev); - if (err) - return err; - - if (!drv->ops->associate) { - err = -EOPNOTSUPP; - goto out; - } + enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED; - if (!info->attrs[NL80211_ATTR_SSID]) + if (!info->attrs[NL80211_ATTR_IFNAME]) return -EINVAL; - assoc_params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); - assoc_params.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); - - if (info->attrs[NL80211_ATTR_BSSID]) - assoc_params.bssid = nla_data(info->attrs[NL80211_ATTR_BSSID]); - - if (info->attrs[NL80211_ATTR_IE]) { - err = check_information_element(info->attrs[NL80211_ATTR_IE]); - if (err) - goto out; - assoc_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]); - assoc_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); - } - - if (info->attrs[NL80211_ATTR_TIMEOUT_TU]) { - assoc_params.timeout = - nla_get_u32(info->attrs[NL80211_ATTR_TIMEOUT_TU]); - assoc_params.valid |= ASSOC_PARAMS_TIMEOUT; - } - - rtnl_lock(); - err = drv->ops->associate(&drv->wiphy, dev, &assoc_params); - rtnl_unlock(); - - out: - cfg80211_put_dev(drv); - dev_put(dev); - return err; -} - -static int nl80211_disassoc_deauth(struct sk_buff *skb, struct genl_info *info) -{ - struct cfg80211_registered_device *drv; - int err; - struct net_device *dev; - int (*act)(struct wiphy *wiphy, struct net_device *dev); - - err = get_drv_dev_by_info_ifindex(info, &drv, &dev); - if (err) - return err; - - switch (info->genlhdr->cmd) { - case NL80211_CMD_DISASSOCIATE: - act = drv->ops->disassociate; - break; - case NL80211_CMD_DEAUTH: - act = drv->ops->deauth; - break; - default: - act = NULL; - } - - if (!act) { - err = -EOPNOTSUPP; - goto out; + if (info->attrs[NL80211_ATTR_IFTYPE]) { + type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]); + if (type > NL80211_IFTYPE_MAX) + return -EINVAL; } - rtnl_lock(); - err = act(&drv->wiphy, dev); - rtnl_unlock(); - out: - cfg80211_put_dev(drv); - dev_put(dev); - return err; -} - -struct add_cb_data { - int idx; - struct sk_buff *skb; -}; - -static int add_bssid(void *data, u8 *bssid) -{ - struct add_cb_data *cb = data; - int err = -ENOBUFS; - struct nlattr *start; - - start = nla_nest_start(cb->skb, cb->idx++); - if (!start) - goto nla_put_failure; - - NLA_PUT(cb->skb, NL80211_ATTR_BSSID, ETH_ALEN, bssid); - - nla_nest_end(cb->skb, start); - err = 0; - - nla_put_failure: - return err; -} - -static int nl80211_get_auth_list(struct sk_buff *skb, struct genl_info *info) -{ - struct cfg80211_registered_device *drv; - struct net_device *dev; - struct sk_buff *msg; - void *hdr; - int err; - struct nlattr *start; - struct add_cb_data cb; - - err = get_drv_dev_by_info_ifindex(info, &drv, &dev); - if (err) - return err; + drv = cfg80211_get_dev_from_info(info); + if (IS_ERR(drv)) + return PTR_ERR(drv); - if (!drv->ops->get_auth_list) { + if (!drv->ops->add_virtual_intf) { err = -EOPNOTSUPP; - goto put_drv; - } - - hdr = nl80211msg_new(&msg, info->snd_pid, info->snd_seq, 0, - NL80211_CMD_NEW_AUTH_LIST); - if (IS_ERR(hdr)) { - err = PTR_ERR(hdr); - goto put_drv; - } - - NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex); - - start = nla_nest_start(msg, NL80211_ATTR_BSS_LIST); - if (!start) { - err = -ENOBUFS; - goto msg_free; + goto unlock; } - cb.skb = msg; - cb.idx = 1; rtnl_lock(); - err = drv->ops->get_auth_list(&drv->wiphy, dev, &cb, add_bssid); + err = drv->ops->add_virtual_intf(&drv->wiphy, + nla_data(info->attrs[NL80211_ATTR_IFNAME]), type); rtnl_unlock(); - if (err) - goto msg_free; - - nla_nest_end(msg, start); - genlmsg_end(msg, hdr); - - err = genlmsg_unicast(msg, info->snd_pid); - goto put_drv; - - nla_put_failure: - err = -ENOBUFS; - msg_free: - nlmsg_free(msg); - put_drv: + unlock: cfg80211_put_dev(drv); - dev_put(dev); return err; } -static int nl80211_initiate_scan(struct sk_buff *skb, struct genl_info *info) +static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info) { struct cfg80211_registered_device *drv; - int err; + int ifindex, err; struct net_device *dev; - struct scan_params params; - struct scan_channel *channels = NULL; - int count = -1; - - if (info->attrs[NL80211_ATTR_PHYMODE]) - params.phymode = nla_get_u32(info->attrs[NL80211_ATTR_PHYMODE]); - - if (params.phymode > NL80211_PHYMODE_MAX) - return -EINVAL; err = get_drv_dev_by_info_ifindex(info, &drv, &dev); if (err) return err; - - if (!drv->ops->initiate_scan) { - err = -EOPNOTSUPP; - goto out; - } - - params.active = nla_get_flag(info->attrs[NL80211_ATTR_FLAG_SCAN_ACTIVE]); - - if (info->attrs[NL80211_ATTR_CHANNEL_LIST]) { - struct nlattr *attr = info->attrs[NL80211_ATTR_CHANNEL_LIST]; - struct nlattr *nla; - int rem; - struct nlattr **tb; - - /* let's count first */ - count = 0; - nla_for_each_attr(nla, nla_data(attr), nla_len(attr), rem) - count++; - - if (count == 0) { - /* assume we should actually scan all channels, - * scanning no channels make no sense */ - count = -1; - goto done_channels; - } - - if (count > NL80211_MAX_CHANNEL_LIST_ITEM) { - err = -EINVAL; - goto out; - } - - channels = kmalloc(count * sizeof(struct scan_channel), - GFP_KERNEL); - tb = kmalloc((NL80211_ATTR_MAX+1) * sizeof(struct nlattr), - GFP_KERNEL); - - count = 0; - nla_for_each_attr(nla, nla_data(attr), nla_len(attr), rem) { - err = nla_parse(tb, NL80211_ATTR_MAX, nla_data(nla), - nla_len(nla), nl80211_policy); - - if (err || !tb[NL80211_ATTR_CHANNEL]) { - err = -EINVAL; - kfree(tb); - kfree(channels); - goto out; - } - - channels[count].phymode = params.phymode; - - if (tb[NL80211_ATTR_PHYMODE]) - channels[count].phymode = - nla_get_u32(tb[NL80211_ATTR_PHYMODE]); - - if (channels[count].phymode > NL80211_PHYMODE_MAX) { - err = -EINVAL; - kfree(tb); - kfree(channels); - goto out; - } - - channels[count].channel = - nla_get_u32(tb[NL80211_ATTR_CHANNEL]); - - channels[count].active = - nla_get_flag(tb[NL80211_ATTR_FLAG_SCAN_ACTIVE]); - count++; - } - kfree(tb); - } - - done_channels: - params.channels = channels; - params.n_channels = count; - - rtnl_lock(); - err = drv->ops->initiate_scan(&drv->wiphy, dev, ¶ms); - rtnl_unlock(); - - kfree(channels); - out: - cfg80211_put_dev(drv); + ifindex = dev->ifindex; dev_put(dev); - return err; -} - -static int nl80211_rename_wiphy(struct sk_buff *skb, struct genl_info *info) -{ - struct cfg80211_registered_device *rdev; - int result; - - if (!info->attrs[NL80211_ATTR_WIPHY_NAME]) - return -EINVAL; - - rdev = cfg80211_get_dev_from_info(info); - if (IS_ERR(rdev)) - return PTR_ERR(rdev); - - result = cfg80211_dev_rename(rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME])); - - cfg80211_put_dev(rdev); - return result; -} -static int nl80211_key_cmd(struct sk_buff *skb, struct genl_info *info) -{ - struct cfg80211_registered_device *drv; - int err, del; - struct net_device *dev; - struct key_params params; - int (*act)(struct wiphy *wiphy, struct net_device *dev, - struct key_params *params); - - memset(¶ms, 0, sizeof(params)); - - if (!info->attrs[NL80211_ATTR_KEY_TYPE]) - return -EINVAL; - - if (!info->attrs[NL80211_ATTR_KEY_CIPHER]) - return -EINVAL; - - params.key_type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]); - if (params.key_type > NL80211_KEYTYPE_MAX) - return -EINVAL; - - err = get_drv_dev_by_info_ifindex(info, &drv, &dev); - if (err) - return err; - - switch (info->genlhdr->cmd) { - case NL80211_CMD_ADD_KEY: - act = drv->ops->add_key; - del = 0; - break; - case NL80211_CMD_DEL_KEY: - act = drv->ops->del_key; - del = 1; - break; - default: - act = NULL; - } - - if (!act) { + if (!drv->ops->del_virtual_intf) { err = -EOPNOTSUPP; goto out; } - if (info->attrs[NL80211_ATTR_KEY_DATA]) { - params.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]); - params.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]); - } - - if (info->attrs[NL80211_ATTR_KEY_ID]) { - params.key_id = nla_get_u32(info->attrs[NL80211_ATTR_KEY_ID]); - } else { - params.key_id = -1; - } - - params.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]); - - if (info->attrs[NL80211_ATTR_MAC]) { - params.macaddress = nla_data(info->attrs[NL80211_ATTR_MAC]); - } else { - params.macaddress = NULL; - } - rtnl_lock(); - err = act(&drv->wiphy, dev, ¶ms); + err = drv->ops->del_virtual_intf(&drv->wiphy, ifindex); rtnl_unlock(); out: cfg80211_put_dev(drv); - dev_put(dev); return err; } static struct genl_ops nl80211_ops[] = { { - .cmd = NL80211_CMD_RENAME_WIPHY, - .doit = nl80211_rename_wiphy, - .policy = nl80211_policy, - .flags = GENL_ADMIN_PERM, - }, - { - .cmd = NL80211_CMD_GET_CMDLIST, - .doit = nl80211_get_cmdlist, - .policy = nl80211_policy, - /* can be retrieved by unprivileged users */ - }, - { - .cmd = NL80211_CMD_ADD_VIRTUAL_INTERFACE, - .doit = nl80211_add_virt_intf, - .policy = nl80211_policy, - .flags = GENL_ADMIN_PERM, - }, - { - .cmd = NL80211_CMD_DEL_VIRTUAL_INTERFACE, - .doit = nl80211_del_virt_intf, - .policy = nl80211_policy, - .flags = GENL_ADMIN_PERM, - }, - { - .cmd = NL80211_CMD_CHANGE_VIRTUAL_INTERFACE, - .doit = nl80211_change_virt_intf, - .policy = nl80211_policy, - .flags = GENL_ADMIN_PERM, - }, - { - .cmd = NL80211_CMD_GET_WIPHYS, - .doit = nl80211_get_wiphys, + .cmd = NL80211_CMD_GET_WIPHY, + .doit = nl80211_get_wiphy, + .dumpit = nl80211_dump_wiphy, .policy = nl80211_policy, /* can be retrieved by unprivileged users */ }, { - .cmd = NL80211_CMD_GET_INTERFACES, - .doit = nl80211_get_intfs, - .policy = nl80211_policy, - /* can be retrieved by unprivileged users */ - }, - { - .cmd = NL80211_CMD_INITIATE_SCAN, - .doit = nl80211_initiate_scan, + .cmd = NL80211_CMD_SET_WIPHY, + .doit = nl80211_set_wiphy, .policy = nl80211_policy, .flags = GENL_ADMIN_PERM, }, { - .cmd = NL80211_CMD_GET_ASSOCIATION, - .doit = nl80211_get_association, + .cmd = NL80211_CMD_GET_INTERFACE, + .doit = nl80211_get_interface, + .dumpit = nl80211_dump_interface, .policy = nl80211_policy, /* can be retrieved by unprivileged users */ }, { - .cmd = NL80211_CMD_ASSOCIATE, - .doit = nl80211_associate, + .cmd = NL80211_CMD_SET_INTERFACE, + .doit = nl80211_set_interface, .policy = nl80211_policy, .flags = GENL_ADMIN_PERM, }, { - .cmd = NL80211_CMD_DISASSOCIATE, - .doit = nl80211_disassoc_deauth, + .cmd = NL80211_CMD_NEW_INTERFACE, + .doit = nl80211_new_interface, .policy = nl80211_policy, .flags = GENL_ADMIN_PERM, }, { - .cmd = NL80211_CMD_DEAUTH, - .doit = nl80211_disassoc_deauth, - .policy = nl80211_policy, - .flags = GENL_ADMIN_PERM, - }, - { - .cmd = NL80211_CMD_GET_AUTH_LIST, - .doit = nl80211_get_auth_list, - .policy = nl80211_policy, - /* can be retrieved by unprivileged users */ - }, -/* - { - .cmd = NL80211_CMD_AP_SET_BEACON, - .policy = nl80211_policy, - .flags = GENL_ADMIN_PERM, - }, - { - .cmd = NL80211_CMD_AP_ADD_STA, - .policy = nl80211_policy, - .flags = GENL_ADMIN_PERM, - }, - { - .cmd = NL80211_CMD_AP_UPDATE_STA, - .policy = nl80211_policy, - .flags = GENL_ADMIN_PERM, - }, - { - .cmd = NL80211_CMD_AP_GET_STA_INFO, - .policy = nl80211_policy, - .flags = GENL_ADMIN_PERM, - }, - { - .cmd = NL80211_CMD_AP_SET_RATESETS, - .policy = nl80211_policy, - .flags = GENL_ADMIN_PERM, - }, -*/ - { - .cmd = NL80211_CMD_ADD_KEY, - .doit = nl80211_key_cmd, - .policy = nl80211_policy, - .flags = GENL_ADMIN_PERM, - }, - { - .cmd = NL80211_CMD_DEL_KEY, - .doit = nl80211_key_cmd, + .cmd = NL80211_CMD_DEL_INTERFACE, + .doit = nl80211_del_interface, .policy = nl80211_policy, .flags = GENL_ADMIN_PERM, }, }; - -/* exported functions */ - -void *nl80211hdr_put(struct sk_buff *skb, u32 pid, u32 seq, int flags, u8 cmd) -{ - /* since there is no private header just add the generic one */ - return genlmsg_put(skb, pid, seq, &nl80211_fam, flags, cmd); -} -EXPORT_SYMBOL_GPL(nl80211hdr_put); - -void *nl80211msg_new(struct sk_buff **skb, u32 pid, u32 seq, int flags, u8 cmd) -{ - void *hdr; - - *skb = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL); - if (!*skb) - return ERR_PTR(-ENOBUFS); - - hdr = nl80211hdr_put(*skb, pid, seq, flags, cmd); - if (!hdr) { - nlmsg_free(*skb); - return ERR_PTR(-ENOBUFS); - } - - return hdr; -} -EXPORT_SYMBOL_GPL(nl80211msg_new); +/* multicast groups */ +static struct genl_multicast_group nl80211_config_mcgrp = { + .name = "config", +}; /* notification functions */ void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev) { struct sk_buff *msg; - void *hdr; - hdr = nl80211msg_new(&msg, 0, 0, 0, NL80211_CMD_WIPHY_NEWNAME); - if (IS_ERR(hdr)) + msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL); + if (!msg) return; - NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->idx); - NLA_PUT_STRING(msg, NL80211_ATTR_WIPHY_NAME, wiphy_name(&rdev->wiphy)); - - genlmsg_end(msg, hdr); - genlmsg_multicast(msg, 0, NL80211_GROUP_CONFIG, GFP_KERNEL); - - return; + if (nl80211_send_wiphy(msg, 0, 0, 0, rdev) < 0) { + nlmsg_free(msg); + return; + } - nla_put_failure: - nlmsg_free(msg); + genlmsg_multicast(msg, 0, nl80211_config_mcgrp.id, GFP_KERNEL); } /* initialisation/exit functions */ @@ -982,6 +414,11 @@ int nl80211_init(void) if (err) goto err_out; } + + err = genl_register_mc_group(&nl80211_fam, &nl80211_config_mcgrp); + if (err) + goto err_out; + return 0; err_out: genl_unregister_family(&nl80211_fam); diff --git a/package/mac80211/src/wireless/radiotap.c b/package/mac80211/src/wireless/radiotap.c new file mode 100644 index 000000000..28fbd0b0b --- /dev/null +++ b/package/mac80211/src/wireless/radiotap.c @@ -0,0 +1,261 @@ +/* + * Radiotap parser + * + * Copyright 2007 Andy Green <andy@warmcat.com> + */ + +#include <net/cfg80211.h> +#include <net/ieee80211_radiotap.h> +#include <asm/unaligned.h> + +/* function prototypes and related defs are in include/net/cfg80211.h */ + +/** + * ieee80211_radiotap_iterator_init - radiotap parser iterator initialization + * @iterator: radiotap_iterator to initialize + * @radiotap_header: radiotap header to parse + * @max_length: total length we can parse into (eg, whole packet length) + * + * Returns: 0 or a negative error code if there is a problem. + * + * This function initializes an opaque iterator struct which can then + * be passed to ieee80211_radiotap_iterator_next() to visit every radiotap + * argument which is present in the header. It knows about extended + * present headers and handles them. + * + * How to use: + * call __ieee80211_radiotap_iterator_init() to init a semi-opaque iterator + * struct ieee80211_radiotap_iterator (no need to init the struct beforehand) + * checking for a good 0 return code. Then loop calling + * __ieee80211_radiotap_iterator_next()... it returns either 0, + * -ENOENT if there are no more args to parse, or -EINVAL if there is a problem. + * The iterator's @this_arg member points to the start of the argument + * associated with the current argument index that is present, which can be + * found in the iterator's @this_arg_index member. This arg index corresponds + * to the IEEE80211_RADIOTAP_... defines. + * + * Radiotap header length: + * You can find the CPU-endian total radiotap header length in + * iterator->max_length after executing ieee80211_radiotap_iterator_init() + * successfully. + * + * Alignment Gotcha: + * You must take care when dereferencing iterator.this_arg + * for multibyte types... the pointer is not aligned. Use + * get_unaligned((type *)iterator.this_arg) to dereference + * iterator.this_arg for type "type" safely on all arches. + * + * Example code: + * See Documentation/networking/radiotap-headers.txt + */ + +int ieee80211_radiotap_iterator_init( + struct ieee80211_radiotap_iterator *iterator, + struct ieee80211_radiotap_header *radiotap_header, + int max_length) +{ + /* Linux only supports version 0 radiotap format */ + if (radiotap_header->it_version) + return -EINVAL; + + /* sanity check for allowed length and radiotap length field */ + if (max_length < le16_to_cpu(get_unaligned(&radiotap_header->it_len))) + return -EINVAL; + + iterator->rtheader = radiotap_header; + iterator->max_length = le16_to_cpu(get_unaligned( + &radiotap_header->it_len)); + iterator->arg_index = 0; + iterator->bitmap_shifter = le32_to_cpu(get_unaligned( + &radiotap_header->it_present)); + iterator->arg = (u8 *)radiotap_header + sizeof(*radiotap_header); + iterator->this_arg = NULL; + + /* find payload start allowing for extended bitmap(s) */ + + if (unlikely(iterator->bitmap_shifter & (1<<IEEE80211_RADIOTAP_EXT))) { + while (le32_to_cpu(get_unaligned((__le32 *)iterator->arg)) & + (1<<IEEE80211_RADIOTAP_EXT)) { + iterator->arg += sizeof(u32); + + /* + * check for insanity where the present bitmaps + * keep claiming to extend up to or even beyond the + * stated radiotap header length + */ + + if (((ulong)iterator->arg - + (ulong)iterator->rtheader) > iterator->max_length) + return -EINVAL; + } + + iterator->arg += sizeof(u32); + + /* + * no need to check again for blowing past stated radiotap + * header length, because ieee80211_radiotap_iterator_next + * checks it before it is dereferenced + */ + } + + /* we are all initialized happily */ + + return 0; +} +EXPORT_SYMBOL(ieee80211_radiotap_iterator_init); + + +/** + * ieee80211_radiotap_iterator_next - return next radiotap parser iterator arg + * @iterator: radiotap_iterator to move to next arg (if any) + * + * Returns: 0 if there is an argument to handle, + * -ENOENT if there are no more args or -EINVAL + * if there is something else wrong. + * + * This function provides the next radiotap arg index (IEEE80211_RADIOTAP_*) + * in @this_arg_index and sets @this_arg to point to the + * payload for the field. It takes care of alignment handling and extended + * present fields. @this_arg can be changed by the caller (eg, + * incremented to move inside a compound argument like + * IEEE80211_RADIOTAP_CHANNEL). The args pointed to are in + * little-endian format whatever the endianess of your CPU. + * + * Alignment Gotcha: + * You must take care when dereferencing iterator.this_arg + * for multibyte types... the pointer is not aligned. Use + * get_unaligned((type *)iterator.this_arg) to dereference + * iterator.this_arg for type "type" safely on all arches. + */ + +int ieee80211_radiotap_iterator_next( + struct ieee80211_radiotap_iterator *iterator) +{ + + /* + * small length lookup table for all radiotap types we heard of + * starting from b0 in the bitmap, so we can walk the payload + * area of the radiotap header + * + * There is a requirement to pad args, so that args + * of a given length must begin at a boundary of that length + * -- but note that compound args are allowed (eg, 2 x u16 + * for IEEE80211_RADIOTAP_CHANNEL) so total arg length is not + * a reliable indicator of alignment requirement. + * + * upper nybble: content alignment for arg + * lower nybble: content length for arg + */ + + static const u8 rt_sizes[] = { + [IEEE80211_RADIOTAP_TSFT] = 0x88, + [IEEE80211_RADIOTAP_FLAGS] = 0x11, + [IEEE80211_RADIOTAP_RATE] = 0x11, + [IEEE80211_RADIOTAP_CHANNEL] = 0x24, + [IEEE80211_RADIOTAP_FHSS] = 0x22, + [IEEE80211_RADIOTAP_DBM_ANTSIGNAL] = 0x11, + [IEEE80211_RADIOTAP_DBM_ANTNOISE] = 0x11, + [IEEE80211_RADIOTAP_LOCK_QUALITY] = 0x22, + [IEEE80211_RADIOTAP_TX_ATTENUATION] = 0x22, + [IEEE80211_RADIOTAP_DB_TX_ATTENUATION] = 0x22, + [IEEE80211_RADIOTAP_DBM_TX_POWER] = 0x11, + [IEEE80211_RADIOTAP_ANTENNA] = 0x11, + [IEEE80211_RADIOTAP_DB_ANTSIGNAL] = 0x11, + [IEEE80211_RADIOTAP_DB_ANTNOISE] = 0x11, + [IEEE80211_RADIOTAP_RX_FLAGS] = 0x22, + [IEEE80211_RADIOTAP_TX_FLAGS] = 0x22, + [IEEE80211_RADIOTAP_RTS_RETRIES] = 0x11, + [IEEE80211_RADIOTAP_DATA_RETRIES] = 0x11, + /* + * add more here as they are defined in + * include/net/ieee80211_radiotap.h + */ + }; + + /* + * for every radiotap entry we can at + * least skip (by knowing the length)... + */ + + while (iterator->arg_index < sizeof(rt_sizes)) { + int hit = 0; + int pad; + + if (!(iterator->bitmap_shifter & 1)) + goto next_entry; /* arg not present */ + + /* + * arg is present, account for alignment padding + * 8-bit args can be at any alignment + * 16-bit args must start on 16-bit boundary + * 32-bit args must start on 32-bit boundary + * 64-bit args must start on 64-bit boundary + * + * note that total arg size can differ from alignment of + * elements inside arg, so we use upper nybble of length + * table to base alignment on + * + * also note: these alignments are ** relative to the + * start of the radiotap header **. There is no guarantee + * that the radiotap header itself is aligned on any + * kind of boundary. + * + * the above is why get_unaligned() is used to dereference + * multibyte elements from the radiotap area + */ + + pad = (((ulong)iterator->arg) - + ((ulong)iterator->rtheader)) & + ((rt_sizes[iterator->arg_index] >> 4) - 1); + + if (pad) + iterator->arg += + (rt_sizes[iterator->arg_index] >> 4) - pad; + + /* + * this is what we will return to user, but we need to + * move on first so next call has something fresh to test + */ + iterator->this_arg_index = iterator->arg_index; + iterator->this_arg = iterator->arg; + hit = 1; + + /* internally move on the size of this arg */ + iterator->arg += rt_sizes[iterator->arg_index] & 0x0f; + + /* + * check for insanity where we are given a bitmap that + * claims to have more arg content than the length of the + * radiotap section. We will normally end up equalling this + * max_length on the last arg, never exceeding it. + */ + + if (((ulong)iterator->arg - (ulong)iterator->rtheader) > + iterator->max_length) + return -EINVAL; + + next_entry: + iterator->arg_index++; + if (unlikely((iterator->arg_index & 31) == 0)) { + /* completed current u32 bitmap */ + if (iterator->bitmap_shifter & 1) { + /* b31 was set, there is more */ + /* move to next u32 bitmap */ + iterator->bitmap_shifter = le32_to_cpu( + get_unaligned(iterator->next_bitmap)); + iterator->next_bitmap++; + } else + /* no more bitmaps: end */ + iterator->arg_index = sizeof(rt_sizes); + } else /* just try the next bit */ + iterator->bitmap_shifter >>= 1; + + /* if we found a valid arg earlier, return it now */ + if (hit) + return 0; + } + + /* we don't know how to handle any more args, we're done */ + return -ENOENT; +} +EXPORT_SYMBOL(ieee80211_radiotap_iterator_next); diff --git a/package/mac80211/src/wireless/sysfs.c b/package/mac80211/src/wireless/sysfs.c index 374d16db7..2d5d2255a 100644 --- a/package/mac80211/src/wireless/sysfs.c +++ b/package/mac80211/src/wireless/sysfs.c @@ -39,59 +39,9 @@ static ssize_t _show_permaddr(struct device *dev, addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]); } -static ssize_t _store_add_iface(struct device *dev, - struct device_attribute *attr, - const char *buf, size_t len) -{ - struct cfg80211_registered_device *rdev = dev_to_rdev(dev); - int res; - - if (len > IFNAMSIZ) - return -EINVAL; - - if (!rdev->ops->add_virtual_intf) - return -ENOSYS; - - rtnl_lock(); - res = rdev->ops->add_virtual_intf(&rdev->wiphy, (char*)buf, - NL80211_IFTYPE_UNSPECIFIED); - rtnl_unlock(); - - return res ? res : len; -} - -static ssize_t _store_remove_iface(struct device *dev, - struct device_attribute *attr, - const char *buf, size_t len) -{ - struct cfg80211_registered_device *rdev = dev_to_rdev(dev); - int res, ifidx; - struct net_device *netdev; - - if (len > IFNAMSIZ) - return -EINVAL; - - if (!rdev->ops->del_virtual_intf) - return -ENOSYS; - - netdev = dev_get_by_name(buf); - if (!netdev) - return -ENODEV; - ifidx = netdev->ifindex; - dev_put(netdev); - - rtnl_lock(); - res = rdev->ops->del_virtual_intf(&rdev->wiphy, ifidx); - rtnl_unlock(); - - return res ? res : len; -} - static struct device_attribute ieee80211_dev_attrs[] = { __ATTR(index, S_IRUGO, _show_index, NULL), __ATTR(macaddress, S_IRUGO, _show_permaddr, NULL), - __ATTR(add_iface, S_IWUGO, NULL, _store_add_iface), - __ATTR(remove_iface, S_IWUGO, NULL, _store_remove_iface), {} }; @@ -102,12 +52,14 @@ static void wiphy_dev_release(struct device *dev) cfg80211_dev_free(rdev); } +#ifdef CONFIG_HOTPLUG static int wiphy_uevent(struct device *dev, char **envp, int num_envp, char *buf, int size) { /* TODO, we probably need stuff here */ return 0; } +#endif struct class ieee80211_class = { .name = "ieee80211", diff --git a/package/mac80211/src/wireless/wext.c b/package/mac80211/src/wireless/wext.c deleted file mode 100644 index d6aaf6519..000000000 --- a/package/mac80211/src/wireless/wext.c +++ /dev/null @@ -1,1509 +0,0 @@ -/* - * This file implement the Wireless Extensions APIs. - * - * Authors : Jean Tourrilhes - HPL - <jt@hpl.hp.com> - * Copyright (c) 1997-2007 Jean Tourrilhes, All Rights Reserved. - * - * (As all part of the Linux kernel, this file is GPL) - */ - -/************************** DOCUMENTATION **************************/ -/* - * API definition : - * -------------- - * See <linux/wireless.h> for details of the APIs and the rest. - * - * History : - * ------- - * - * v1 - 5.12.01 - Jean II - * o Created this file. - * - * v2 - 13.12.01 - Jean II - * o Move /proc/net/wireless stuff from net/core/dev.c to here - * o Make Wireless Extension IOCTLs go through here - * o Added iw_handler handling ;-) - * o Added standard ioctl description - * o Initial dumb commit strategy based on orinoco.c - * - * v3 - 19.12.01 - Jean II - * o Make sure we don't go out of standard_ioctl[] in ioctl_standard_call - * o Add event dispatcher function - * o Add event description - * o Propagate events as rtnetlink IFLA_WIRELESS option - * o Generate event on selected SET requests - * - * v4 - 18.04.02 - Jean II - * o Fix stupid off by one in iw_ioctl_description : IW_ESSID_MAX_SIZE + 1 - * - * v5 - 21.06.02 - Jean II - * o Add IW_PRIV_TYPE_ADDR in priv_type_size (+cleanup) - * o Reshuffle IW_HEADER_TYPE_XXX to map IW_PRIV_TYPE_XXX changes - * o Add IWEVCUSTOM for driver specific event/scanning token - * o Turn on WE_STRICT_WRITE by default + kernel warning - * o Fix WE_STRICT_WRITE in ioctl_export_private() (32 => iw_num) - * o Fix off-by-one in test (extra_size <= IFNAMSIZ) - * - * v6 - 9.01.03 - Jean II - * o Add common spy support : iw_handler_set_spy(), wireless_spy_update() - * o Add enhanced spy support : iw_handler_set_thrspy() and event. - * o Add WIRELESS_EXT version display in /proc/net/wireless - * - * v6 - 18.06.04 - Jean II - * o Change get_spydata() method for added safety - * o Remove spy #ifdef, they are always on -> cleaner code - * o Allow any size GET request if user specifies length > max - * and if request has IW_DESCR_FLAG_NOMAX flag or is SIOCGIWPRIV - * o Start migrating get_wireless_stats to struct iw_handler_def - * o Add wmb() in iw_handler_set_spy() for non-coherent archs/cpus - * Based on patch from Pavel Roskin <proski@gnu.org> : - * o Fix kernel data leak to user space in private handler handling - * - * v7 - 18.3.05 - Jean II - * o Remove (struct iw_point *)->pointer from events and streams - * o Remove spy_offset from struct iw_handler_def - * o Start deprecating dev->get_wireless_stats, output a warning - * o If IW_QUAL_DBM is set, show dBm values in /proc/net/wireless - * o Don't loose INVALID/DBM flags when clearing UPDATED flags (iwstats) - * - * v8 - 17.02.06 - Jean II - * o RtNetlink requests support (SET/GET) - * - * v8b - 03.08.06 - Herbert Xu - * o Fix Wireless Event locking issues. - * - * v9 - 14.3.06 - Jean II - * o Change length in ESSID and NICK to strlen() instead of strlen()+1 - * o Make standard_ioctl_num and standard_event_num unsigned - * o Remove (struct net_device *)->get_wireless_stats() - * - * v10 - 16.3.07 - Jean II - * o Prevent leaking of kernel space in stream on 64 bits. - */ - -/***************************** INCLUDES *****************************/ - -#include <linux/module.h> -#include <linux/types.h> /* off_t */ -#include <linux/netdevice.h> /* struct ifreq, dev_get_by_name() */ -#include <linux/proc_fs.h> -#include <linux/rtnetlink.h> /* rtnetlink stuff */ -#include <linux/seq_file.h> -#include <linux/init.h> /* for __init */ -#include <linux/if_arp.h> /* ARPHRD_ETHER */ -#include <linux/etherdevice.h> /* compare_ether_addr */ -#include <linux/interrupt.h> - -#include <linux/wireless.h> /* Pretty obvious */ -#include <net/iw_handler.h> /* New driver API */ -#include <net/netlink.h> -#include <net/wext.h> - -#include <asm/uaccess.h> /* copy_to_user() */ - -/************************* GLOBAL VARIABLES *************************/ -/* - * You should not use global variables, because of re-entrancy. - * On our case, it's only const, so it's OK... - */ -/* - * Meta-data about all the standard Wireless Extension request we - * know about. - */ -static const struct iw_ioctl_description standard_ioctl[] = { - [SIOCSIWCOMMIT - SIOCIWFIRST] = { - .header_type = IW_HEADER_TYPE_NULL, - }, - [SIOCGIWNAME - SIOCIWFIRST] = { - .header_type = IW_HEADER_TYPE_CHAR, - .flags = IW_DESCR_FLAG_DUMP, - }, - [SIOCSIWNWID - SIOCIWFIRST] = { - .header_type = IW_HEADER_TYPE_PARAM, - .flags = IW_DESCR_FLAG_EVENT, - }, - [SIOCGIWNWID - SIOCIWFIRST] = { - .header_type = IW_HEADER_TYPE_PARAM, - .flags = IW_DESCR_FLAG_DUMP, - }, - [SIOCSIWFREQ - SIOCIWFIRST] = { - .header_type = IW_HEADER_TYPE_FREQ, - .flags = IW_DESCR_FLAG_EVENT, - }, - [SIOCGIWFREQ - SIOCIWFIRST] = { - .header_type = IW_HEADER_TYPE_FREQ, - .flags = IW_DESCR_FLAG_DUMP, - }, - [SIOCSIWMODE - SIOCIWFIRST] = { - .header_type = IW_HEADER_TYPE_UINT, - .flags = IW_DESCR_FLAG_EVENT, - }, - [SIOCGIWMODE - SIOCIWFIRST] = { - .header_type = IW_HEADER_TYPE_UINT, - .flags = IW_DESCR_FLAG_DUMP, - }, - [SIOCSIWSENS - SIOCIWFIRST] = { - .header_type = IW_HEADER_TYPE_PARAM, - }, - [SIOCGIWSENS - SIOCIWFIRST] = { - .header_type = IW_HEADER_TYPE_PARAM, - }, - [SIOCSIWRANGE - SIOCIWFIRST] = { - .header_type = IW_HEADER_TYPE_NULL, - }, - [SIOCGIWRANGE - SIOCIWFIRST] = { - .header_type = IW_HEADER_TYPE_POINT, - .token_size = 1, - .max_tokens = sizeof(struct iw_range), - .flags = IW_DESCR_FLAG_DUMP, - }, - [SIOCSIWPRIV - SIOCIWFIRST] = { - .header_type = IW_HEADER_TYPE_NULL, - }, - [SIOCGIWPRIV - SIOCIWFIRST] = { /* (handled directly by us) */ - .header_type = IW_HEADER_TYPE_POINT, - .token_size = sizeof(struct iw_priv_args), - .max_tokens = 16, - .flags = IW_DESCR_FLAG_NOMAX, - }, - [SIOCSIWSTATS - SIOCIWFIRST] = { - .header_type = IW_HEADER_TYPE_NULL, - }, - [SIOCGIWSTATS - SIOCIWFIRST] = { /* (handled directly by us) */ - .header_type = IW_HEADER_TYPE_POINT, - .token_size = 1, - .max_tokens = sizeof(struct iw_statistics), - .flags = IW_DESCR_FLAG_DUMP, - }, - [SIOCSIWSPY - SIOCIWFIRST] = { - .header_type = IW_HEADER_TYPE_POINT, - .token_size = sizeof(struct sockaddr), - .max_tokens = IW_MAX_SPY, - }, - [SIOCGIWSPY - SIOCIWFIRST] = { - .header_type = IW_HEADER_TYPE_POINT, - .token_size = sizeof(struct sockaddr) + - sizeof(struct iw_quality), - .max_tokens = IW_MAX_SPY, - }, - [SIOCSIWTHRSPY - SIOCIWFIRST] = { - .header_type = IW_HEADER_TYPE_POINT, - .token_size = sizeof(struct iw_thrspy), - .min_tokens = 1, - .max_tokens = 1, - }, - [SIOCGIWTHRSPY - SIOCIWFIRST] = { - .header_type = IW_HEADER_TYPE_POINT, - .token_size = sizeof(struct iw_thrspy), - .min_tokens = 1, - .max_tokens = 1, - }, - [SIOCSIWAP - SIOCIWFIRST] = { - .header_type = IW_HEADER_TYPE_ADDR, - }, - [SIOCGIWAP - SIOCIWFIRST] = { - .header_type = IW_HEADER_TYPE_ADDR, - .flags = IW_DESCR_FLAG_DUMP, - }, - [SIOCSIWMLME - SIOCIWFIRST] = { - .header_type = IW_HEADER_TYPE_POINT, - .token_size = 1, - .min_tokens = sizeof(struct iw_mlme), - .max_tokens = sizeof(struct iw_mlme), - }, - [SIOCGIWAPLIST - SIOCIWFIRST] = { - .header_type = IW_HEADER_TYPE_POINT, - .token_size = sizeof(struct sockaddr) + - sizeof(struct iw_quality), - .max_tokens = IW_MAX_AP, - .flags = IW_DESCR_FLAG_NOMAX, - }, - [SIOCSIWSCAN - SIOCIWFIRST] = { - .header_type = IW_HEADER_TYPE_POINT, - .token_size = 1, - .min_tokens = 0, - .max_tokens = sizeof(struct iw_scan_req), - }, - [SIOCGIWSCAN - SIOCIWFIRST] = { - .header_type = IW_HEADER_TYPE_POINT, - .token_size = 1, - .max_tokens = IW_SCAN_MAX_DATA, - .flags = IW_DESCR_FLAG_NOMAX, - }, - [SIOCSIWESSID - SIOCIWFIRST] = { - .header_type = IW_HEADER_TYPE_POINT, - .token_size = 1, - .max_tokens = IW_ESSID_MAX_SIZE, - .flags = IW_DESCR_FLAG_EVENT, - }, - [SIOCGIWESSID - SIOCIWFIRST] = { - .header_type = IW_HEADER_TYPE_POINT, - .token_size = 1, - .max_tokens = IW_ESSID_MAX_SIZE, - .flags = IW_DESCR_FLAG_DUMP, - }, - [SIOCSIWNICKN - SIOCIWFIRST] = { - .header_type = IW_HEADER_TYPE_POINT, - .token_size = 1, - .max_tokens = IW_ESSID_MAX_SIZE, - }, - [SIOCGIWNICKN - SIOCIWFIRST] = { - .header_type = IW_HEADER_TYPE_POINT, - .token_size = 1, - .max_tokens = IW_ESSID_MAX_SIZE, - }, - [SIOCSIWRATE - SIOCIWFIRST] = { - .header_type = IW_HEADER_TYPE_PARAM, - }, - [SIOCGIWRATE - SIOCIWFIRST] = { - .header_type = IW_HEADER_TYPE_PARAM, - }, - [SIOCSIWRTS - SIOCIWFIRST] = { - .header_type = IW_HEADER_TYPE_PARAM, - }, - [SIOCGIWRTS - SIOCIWFIRST] = { - .header_type = IW_HEADER_TYPE_PARAM, - }, - [SIOCSIWFRAG - SIOCIWFIRST] = { - .header_type = IW_HEADER_TYPE_PARAM, - }, - [SIOCGIWFRAG - SIOCIWFIRST] = { - .header_type = IW_HEADER_TYPE_PARAM, - }, - [SIOCSIWTXPOW - SIOCIWFIRST] = { - .header_type = IW_HEADER_TYPE_PARAM, - }, - [SIOCGIWTXPOW - SIOCIWFIRST] = { - .header_type = IW_HEADER_TYPE_PARAM, - }, - [SIOCSIWRETRY - SIOCIWFIRST] = { - .header_type = IW_HEADER_TYPE_PARAM, - }, - [SIOCGIWRETRY - SIOCIWFIRST] = { - .header_type = IW_HEADER_TYPE_PARAM, - }, - [SIOCSIWENCODE - SIOCIWFIRST] = { - .header_type = IW_HEADER_TYPE_POINT, - .token_size = 1, - .max_tokens = IW_ENCODING_TOKEN_MAX, - .flags = IW_DESCR_FLAG_EVENT | IW_DESCR_FLAG_RESTRICT, - }, - [SIOCGIWENCODE - SIOCIWFIRST] = { - .header_type = IW_HEADER_TYPE_POINT, - .token_size = 1, - .max_tokens = IW_ENCODING_TOKEN_MAX, - .flags = IW_DESCR_FLAG_DUMP | IW_DESCR_FLAG_RESTRICT, - }, - [SIOCSIWPOWER - SIOCIWFIRST] = { - .header_type = IW_HEADER_TYPE_PARAM, - }, - [SIOCGIWPOWER - SIOCIWFIRST] = { - .header_type = IW_HEADER_TYPE_PARAM, - }, - [SIOCSIWGENIE - SIOCIWFIRST] = { - .header_type = IW_HEADER_TYPE_POINT, - .token_size = 1, - .max_tokens = IW_GENERIC_IE_MAX, - }, - [SIOCGIWGENIE - SIOCIWFIRST] = { - .header_type = IW_HEADER_TYPE_POINT, - .token_size = 1, - .max_tokens = IW_GENERIC_IE_MAX, - }, - [SIOCSIWAUTH - SIOCIWFIRST] = { - .header_type = IW_HEADER_TYPE_PARAM, - }, - [SIOCGIWAUTH - SIOCIWFIRST] = { - .header_type = IW_HEADER_TYPE_PARAM, - }, - [SIOCSIWENCODEEXT - SIOCIWFIRST] = { - .header_type = IW_HEADER_TYPE_POINT, - .token_size = 1, - .min_tokens = sizeof(struct iw_encode_ext), - .max_tokens = sizeof(struct iw_encode_ext) + - IW_ENCODING_TOKEN_MAX, - }, - [SIOCGIWENCODEEXT - SIOCIWFIRST] = { - .header_type = IW_HEADER_TYPE_POINT, - .token_size = 1, - .min_tokens = sizeof(struct iw_encode_ext), - .max_tokens = sizeof(struct iw_encode_ext) + - IW_ENCODING_TOKEN_MAX, - }, - [SIOCSIWPMKSA - SIOCIWFIRST] = { - .header_type = IW_HEADER_TYPE_POINT, - .token_size = 1, - .min_tokens = sizeof(struct iw_pmksa), - .max_tokens = sizeof(struct iw_pmksa), - }, -}; -static const unsigned standard_ioctl_num = ARRAY_SIZE(standard_ioctl); - -/* - * Meta-data about all the additional standard Wireless Extension events - * we know about. - */ -static const struct iw_ioctl_description standard_event[] = { - [IWEVTXDROP - IWEVFIRST] = { - .header_type = IW_HEADER_TYPE_ADDR, - }, - [IWEVQUAL - IWEVFIRST] = { - .header_type = IW_HEADER_TYPE_QUAL, - }, - [IWEVCUSTOM - IWEVFIRST] = { - .header_type = IW_HEADER_TYPE_POINT, - .token_size = 1, - .max_tokens = IW_CUSTOM_MAX, - }, - [IWEVREGISTERED - IWEVFIRST] = { - .header_type = IW_HEADER_TYPE_ADDR, - }, - [IWEVEXPIRED - IWEVFIRST] = { - .header_type = IW_HEADER_TYPE_ADDR, - }, - [IWEVGENIE - IWEVFIRST] = { - .header_type = IW_HEADER_TYPE_POINT, - .token_size = 1, - .max_tokens = IW_GENERIC_IE_MAX, - }, - [IWEVMICHAELMICFAILURE - IWEVFIRST] = { - .header_type = IW_HEADER_TYPE_POINT, - .token_size = 1, - .max_tokens = sizeof(struct iw_michaelmicfailure), - }, - [IWEVASSOCREQIE - IWEVFIRST] = { - .header_type = IW_HEADER_TYPE_POINT, - .token_size = 1, - .max_tokens = IW_GENERIC_IE_MAX, - }, - [IWEVASSOCRESPIE - IWEVFIRST] = { - .header_type = IW_HEADER_TYPE_POINT, - .token_size = 1, - .max_tokens = IW_GENERIC_IE_MAX, - }, - [IWEVPMKIDCAND - IWEVFIRST] = { - .header_type = IW_HEADER_TYPE_POINT, - .token_size = 1, - .max_tokens = sizeof(struct iw_pmkid_cand), - }, -}; -static const unsigned standard_event_num = ARRAY_SIZE(standard_event); - -/* Size (in bytes) of the various private data types */ -static const char iw_priv_type_size[] = { - 0, /* IW_PRIV_TYPE_NONE */ - 1, /* IW_PRIV_TYPE_BYTE */ - 1, /* IW_PRIV_TYPE_CHAR */ - 0, /* Not defined */ - sizeof(__u32), /* IW_PRIV_TYPE_INT */ - sizeof(struct iw_freq), /* IW_PRIV_TYPE_FLOAT */ - sizeof(struct sockaddr), /* IW_PRIV_TYPE_ADDR */ - 0, /* Not defined */ -}; - -/* Size (in bytes) of various events */ -static const int event_type_size[] = { - IW_EV_LCP_LEN, /* IW_HEADER_TYPE_NULL */ - 0, - IW_EV_CHAR_LEN, /* IW_HEADER_TYPE_CHAR */ - 0, - IW_EV_UINT_LEN, /* IW_HEADER_TYPE_UINT */ - IW_EV_FREQ_LEN, /* IW_HEADER_TYPE_FREQ */ - IW_EV_ADDR_LEN, /* IW_HEADER_TYPE_ADDR */ - 0, - IW_EV_POINT_LEN, /* Without variable payload */ - IW_EV_PARAM_LEN, /* IW_HEADER_TYPE_PARAM */ - IW_EV_QUAL_LEN, /* IW_HEADER_TYPE_QUAL */ -}; - -/* Size (in bytes) of various events, as packed */ -static const int event_type_pk_size[] = { - IW_EV_LCP_PK_LEN, /* IW_HEADER_TYPE_NULL */ - 0, - IW_EV_CHAR_PK_LEN, /* IW_HEADER_TYPE_CHAR */ - 0, - IW_EV_UINT_PK_LEN, /* IW_HEADER_TYPE_UINT */ - IW_EV_FREQ_PK_LEN, /* IW_HEADER_TYPE_FREQ */ - IW_EV_ADDR_PK_LEN, /* IW_HEADER_TYPE_ADDR */ - 0, - IW_EV_POINT_PK_LEN, /* Without variable payload */ - IW_EV_PARAM_PK_LEN, /* IW_HEADER_TYPE_PARAM */ - IW_EV_QUAL_PK_LEN, /* IW_HEADER_TYPE_QUAL */ -}; - -/************************ COMMON SUBROUTINES ************************/ -/* - * Stuff that may be used in various place or doesn't fit in one - * of the section below. - */ - -/* ---------------------------------------------------------------- */ -/* - * Return the driver handler associated with a specific Wireless Extension. - */ -static iw_handler get_handler(struct net_device *dev, unsigned int cmd) -{ - /* Don't "optimise" the following variable, it will crash */ - unsigned int index; /* *MUST* be unsigned */ - - /* Check if we have some wireless handlers defined */ - if (dev->wireless_handlers == NULL) - return NULL; - - /* Try as a standard command */ - index = cmd - SIOCIWFIRST; - if (index < dev->wireless_handlers->num_standard) - return dev->wireless_handlers->standard[index]; - - /* Try as a private command */ - index = cmd - SIOCIWFIRSTPRIV; - if (index < dev->wireless_handlers->num_private) - return dev->wireless_handlers->private[index]; - - /* Not found */ - return NULL; -} - -/* ---------------------------------------------------------------- */ -/* - * Get statistics out of the driver - */ -static struct iw_statistics *get_wireless_stats(struct net_device *dev) -{ - /* New location */ - if ((dev->wireless_handlers != NULL) && - (dev->wireless_handlers->get_wireless_stats != NULL)) - return dev->wireless_handlers->get_wireless_stats(dev); - - /* Not found */ - return NULL; -} - -/* ---------------------------------------------------------------- */ -/* - * Call the commit handler in the driver - * (if exist and if conditions are right) - * - * Note : our current commit strategy is currently pretty dumb, - * but we will be able to improve on that... - * The goal is to try to agreagate as many changes as possible - * before doing the commit. Drivers that will define a commit handler - * are usually those that need a reset after changing parameters, so - * we want to minimise the number of reset. - * A cool idea is to use a timer : at each "set" command, we re-set the - * timer, when the timer eventually fires, we call the driver. - * Hopefully, more on that later. - * - * Also, I'm waiting to see how many people will complain about the - * netif_running(dev) test. I'm open on that one... - * Hopefully, the driver will remember to do a commit in "open()" ;-) - */ -static int call_commit_handler(struct net_device *dev) -{ - if ((netif_running(dev)) && - (dev->wireless_handlers->standard[0] != NULL)) - /* Call the commit handler on the driver */ - return dev->wireless_handlers->standard[0](dev, NULL, - NULL, NULL); - else - return 0; /* Command completed successfully */ -} - -/* ---------------------------------------------------------------- */ -/* - * Calculate size of private arguments - */ -static inline int get_priv_size(__u16 args) -{ - int num = args & IW_PRIV_SIZE_MASK; - int type = (args & IW_PRIV_TYPE_MASK) >> 12; - - return num * iw_priv_type_size[type]; -} - -/* ---------------------------------------------------------------- */ -/* - * Re-calculate the size of private arguments - */ -static inline int adjust_priv_size(__u16 args, - union iwreq_data * wrqu) -{ - int num = wrqu->data.length; - int max = args & IW_PRIV_SIZE_MASK; - int type = (args & IW_PRIV_TYPE_MASK) >> 12; - - /* Make sure the driver doesn't goof up */ - if (max < num) - num = max; - - return num * iw_priv_type_size[type]; -} - -/* ---------------------------------------------------------------- */ -/* - * Standard Wireless Handler : get wireless stats - * Allow programatic access to /proc/net/wireless even if /proc - * doesn't exist... Also more efficient... - */ -static int iw_handler_get_iwstats(struct net_device * dev, - struct iw_request_info * info, - union iwreq_data * wrqu, - char * extra) -{ - /* Get stats from the driver */ - struct iw_statistics *stats; - - stats = get_wireless_stats(dev); - if (stats) { - /* Copy statistics to extra */ - memcpy(extra, stats, sizeof(struct iw_statistics)); - wrqu->data.length = sizeof(struct iw_statistics); - - /* Check if we need to clear the updated flag */ - if (wrqu->data.flags != 0) - stats->qual.updated &= ~IW_QUAL_ALL_UPDATED; - return 0; - } else - return -EOPNOTSUPP; -} - -/* ---------------------------------------------------------------- */ -/* - * Standard Wireless Handler : get iwpriv definitions - * Export the driver private handler definition - * They will be picked up by tools like iwpriv... - */ -static int iw_handler_get_private(struct net_device * dev, - struct iw_request_info * info, - union iwreq_data * wrqu, - char * extra) -{ - /* Check if the driver has something to export */ - if ((dev->wireless_handlers->num_private_args == 0) || - (dev->wireless_handlers->private_args == NULL)) - return -EOPNOTSUPP; - - /* Check if there is enough buffer up there */ - if (wrqu->data.length < dev->wireless_handlers->num_private_args) { - /* User space can't know in advance how large the buffer - * needs to be. Give it a hint, so that we can support - * any size buffer we want somewhat efficiently... */ - wrqu->data.length = dev->wireless_handlers->num_private_args; - return -E2BIG; - } - - /* Set the number of available ioctls. */ - wrqu->data.length = dev->wireless_handlers->num_private_args; - - /* Copy structure to the user buffer. */ - memcpy(extra, dev->wireless_handlers->private_args, - sizeof(struct iw_priv_args) * wrqu->data.length); - - return 0; -} - - -/******************** /proc/net/wireless SUPPORT ********************/ -/* - * The /proc/net/wireless file is a human readable user-space interface - * exporting various wireless specific statistics from the wireless devices. - * This is the most popular part of the Wireless Extensions ;-) - * - * This interface is a pure clone of /proc/net/dev (in net/core/dev.c). - * The content of the file is basically the content of "struct iw_statistics". - */ - -#ifdef CONFIG_PROC_FS - -/* ---------------------------------------------------------------- */ -/* - * Print one entry (line) of /proc/net/wireless - */ -static void wireless_seq_printf_stats(struct seq_file *seq, - struct net_device *dev) -{ - /* Get stats from the driver */ - struct iw_statistics *stats = get_wireless_stats(dev); - - if (stats) { - seq_printf(seq, "%6s: %04x %3d%c %3d%c %3d%c %6d %6d %6d " - "%6d %6d %6d\n", - dev->name, stats->status, stats->qual.qual, - stats->qual.updated & IW_QUAL_QUAL_UPDATED - ? '.' : ' ', - ((__s32) stats->qual.level) - - ((stats->qual.updated & IW_QUAL_DBM) ? 0x100 : 0), - stats->qual.updated & IW_QUAL_LEVEL_UPDATED - ? '.' : ' ', - ((__s32) stats->qual.noise) - - ((stats->qual.updated & IW_QUAL_DBM) ? 0x100 : 0), - stats->qual.updated & IW_QUAL_NOISE_UPDATED - ? '.' : ' ', - stats->discard.nwid, stats->discard.code, - stats->discard.fragment, stats->discard.retries, - stats->discard.misc, stats->miss.beacon); - stats->qual.updated &= ~IW_QUAL_ALL_UPDATED; - } -} - -/* ---------------------------------------------------------------- */ -/* - * Print info for /proc/net/wireless (print all entries) - */ -static int wireless_seq_show(struct seq_file *seq, void *v) -{ - if (v == SEQ_START_TOKEN) - seq_printf(seq, "Inter-| sta-| Quality | Discarded " - "packets | Missed | WE\n" - " face | tus | link level noise | nwid " - "crypt frag retry misc | beacon | %d\n", - WIRELESS_EXT); - else - wireless_seq_printf_stats(seq, v); - return 0; -} - -static const struct seq_operations wireless_seq_ops = { - .start = dev_seq_start, - .next = dev_seq_next, - .stop = dev_seq_stop, - .show = wireless_seq_show, -}; - -static int wireless_seq_open(struct inode *inode, struct file *file) -{ - return seq_open(file, &wireless_seq_ops); -} - -static const struct file_operations wireless_seq_fops = { - .owner = THIS_MODULE, - .open = wireless_seq_open, - .read = seq_read, - .llseek = seq_lseek, - .release = seq_release, -}; - -int __init wext_proc_init(void) -{ - /* Create /proc/net/wireless entry */ - if (!proc_net_fops_create("wireless", S_IRUGO, &wireless_seq_fops)) - return -ENOMEM; - - return 0; -} -#endif /* CONFIG_PROC_FS */ - -/************************** IOCTL SUPPORT **************************/ -/* - * The original user space API to configure all those Wireless Extensions - * is through IOCTLs. - * In there, we check if we need to call the new driver API (iw_handler) - * or just call the driver ioctl handler. - */ - -/* ---------------------------------------------------------------- */ -/* - * Wrapper to call a standard Wireless Extension handler. - * We do various checks and also take care of moving data between - * user space and kernel space. - */ -static int ioctl_standard_call(struct net_device * dev, - struct ifreq * ifr, - unsigned int cmd, - iw_handler handler) -{ - struct iwreq * iwr = (struct iwreq *) ifr; - const struct iw_ioctl_description * descr; - struct iw_request_info info; - int ret = -EINVAL; - - /* Get the description of the IOCTL */ - if ((cmd - SIOCIWFIRST) >= standard_ioctl_num) - return -EOPNOTSUPP; - descr = &(standard_ioctl[cmd - SIOCIWFIRST]); - - /* Prepare the call */ - info.cmd = cmd; - info.flags = 0; - - /* Check if we have a pointer to user space data or not */ - if (descr->header_type != IW_HEADER_TYPE_POINT) { - - /* No extra arguments. Trivial to handle */ - ret = handler(dev, &info, &(iwr->u), NULL); - - /* Generate an event to notify listeners of the change */ - if ((descr->flags & IW_DESCR_FLAG_EVENT) && - ((ret == 0) || (ret == -EIWCOMMIT))) - wireless_send_event(dev, cmd, &(iwr->u), NULL); - } else { - char * extra; - int extra_size; - int user_length = 0; - int err; - int essid_compat = 0; - - /* Calculate space needed by arguments. Always allocate - * for max space. Easier, and won't last long... */ - extra_size = descr->max_tokens * descr->token_size; - - /* Check need for ESSID compatibility for WE < 21 */ - switch (cmd) { - case SIOCSIWESSID: - case SIOCGIWESSID: - case SIOCSIWNICKN: - case SIOCGIWNICKN: - if (iwr->u.data.length == descr->max_tokens + 1) - essid_compat = 1; - else if (IW_IS_SET(cmd) && (iwr->u.data.length != 0)) { - char essid[IW_ESSID_MAX_SIZE + 1]; - - err = copy_from_user(essid, iwr->u.data.pointer, - iwr->u.data.length * - descr->token_size); - if (err) - return -EFAULT; - - if (essid[iwr->u.data.length - 1] == '\0') - essid_compat = 1; - } - break; - default: - break; - } - - iwr->u.data.length -= essid_compat; - - /* Check what user space is giving us */ - if (IW_IS_SET(cmd)) { - /* Check NULL pointer */ - if ((iwr->u.data.pointer == NULL) && - (iwr->u.data.length != 0)) - return -EFAULT; - /* Check if number of token fits within bounds */ - if (iwr->u.data.length > descr->max_tokens) - return -E2BIG; - if (iwr->u.data.length < descr->min_tokens) - return -EINVAL; - } else { - /* Check NULL pointer */ - if (iwr->u.data.pointer == NULL) - return -EFAULT; - /* Save user space buffer size for checking */ - user_length = iwr->u.data.length; - - /* Don't check if user_length > max to allow forward - * compatibility. The test user_length < min is - * implied by the test at the end. */ - - /* Support for very large requests */ - if ((descr->flags & IW_DESCR_FLAG_NOMAX) && - (user_length > descr->max_tokens)) { - /* Allow userspace to GET more than max so - * we can support any size GET requests. - * There is still a limit : -ENOMEM. */ - extra_size = user_length * descr->token_size; - /* Note : user_length is originally a __u16, - * and token_size is controlled by us, - * so extra_size won't get negative and - * won't overflow... */ - } - } - - /* Create the kernel buffer */ - /* kzalloc ensures NULL-termination for essid_compat */ - extra = kzalloc(extra_size, GFP_KERNEL); - if (extra == NULL) - return -ENOMEM; - - /* If it is a SET, get all the extra data in here */ - if (IW_IS_SET(cmd) && (iwr->u.data.length != 0)) { - err = copy_from_user(extra, iwr->u.data.pointer, - iwr->u.data.length * - descr->token_size); - if (err) { - kfree(extra); - return -EFAULT; - } - } - - /* Call the handler */ - ret = handler(dev, &info, &(iwr->u), extra); - - iwr->u.data.length += essid_compat; - - /* If we have something to return to the user */ - if (!ret && IW_IS_GET(cmd)) { - /* Check if there is enough buffer up there */ - if (user_length < iwr->u.data.length) { - kfree(extra); - return -E2BIG; - } - - err = copy_to_user(iwr->u.data.pointer, extra, - iwr->u.data.length * - descr->token_size); - if (err) - ret = -EFAULT; - } - - /* Generate an event to notify listeners of the change */ - if ((descr->flags & IW_DESCR_FLAG_EVENT) && - ((ret == 0) || (ret == -EIWCOMMIT))) { - if (descr->flags & IW_DESCR_FLAG_RESTRICT) - /* If the event is restricted, don't - * export the payload */ - wireless_send_event(dev, cmd, &(iwr->u), NULL); - else - wireless_send_event(dev, cmd, &(iwr->u), - extra); - } - - /* Cleanup - I told you it wasn't that long ;-) */ - kfree(extra); - } - - /* Call commit handler if needed and defined */ - if (ret == -EIWCOMMIT) - ret = call_commit_handler(dev); - - /* Here, we will generate the appropriate event if needed */ - - return ret; -} - -/* ---------------------------------------------------------------- */ -/* - * Wrapper to call a private Wireless Extension handler. - * We do various checks and also take care of moving data between - * user space and kernel space. - * It's not as nice and slimline as the standard wrapper. The cause - * is struct iw_priv_args, which was not really designed for the - * job we are going here. - * - * IMPORTANT : This function prevent to set and get data on the same - * IOCTL and enforce the SET/GET convention. Not doing it would be - * far too hairy... - * If you need to set and get data at the same time, please don't use - * a iw_handler but process it in your ioctl handler (i.e. use the - * old driver API). - */ -static int ioctl_private_call(struct net_device *dev, struct ifreq *ifr, - unsigned int cmd, iw_handler handler) -{ - struct iwreq * iwr = (struct iwreq *) ifr; - const struct iw_priv_args * descr = NULL; - struct iw_request_info info; - int extra_size = 0; - int i; - int ret = -EINVAL; - - /* Get the description of the IOCTL */ - for (i = 0; i < dev->wireless_handlers->num_private_args; i++) - if (cmd == dev->wireless_handlers->private_args[i].cmd) { - descr = &(dev->wireless_handlers->private_args[i]); - break; - } - - /* Compute the size of the set/get arguments */ - if (descr != NULL) { - if (IW_IS_SET(cmd)) { - int offset = 0; /* For sub-ioctls */ - /* Check for sub-ioctl handler */ - if (descr->name[0] == '\0') - /* Reserve one int for sub-ioctl index */ - offset = sizeof(__u32); - - /* Size of set arguments */ - extra_size = get_priv_size(descr->set_args); - - /* Does it fits in iwr ? */ - if ((descr->set_args & IW_PRIV_SIZE_FIXED) && - ((extra_size + offset) <= IFNAMSIZ)) - extra_size = 0; - } else { - /* Size of get arguments */ - extra_size = get_priv_size(descr->get_args); - - /* Does it fits in iwr ? */ - if ((descr->get_args & IW_PRIV_SIZE_FIXED) && - (extra_size <= IFNAMSIZ)) - extra_size = 0; - } - } - - /* Prepare the call */ - info.cmd = cmd; - info.flags = 0; - - /* Check if we have a pointer to user space data or not. */ - if (extra_size == 0) { - /* No extra arguments. Trivial to handle */ - ret = handler(dev, &info, &(iwr->u), (char *) &(iwr->u)); - } else { - char * extra; - int err; - - /* Check what user space is giving us */ - if (IW_IS_SET(cmd)) { - /* Check NULL pointer */ - if ((iwr->u.data.pointer == NULL) && - (iwr->u.data.length != 0)) - return -EFAULT; - - /* Does it fits within bounds ? */ - if (iwr->u.data.length > (descr->set_args & - IW_PRIV_SIZE_MASK)) - return -E2BIG; - } else if (iwr->u.data.pointer == NULL) - return -EFAULT; - - /* Always allocate for max space. Easier, and won't last - * long... */ - extra = kmalloc(extra_size, GFP_KERNEL); - if (extra == NULL) - return -ENOMEM; - - /* If it is a SET, get all the extra data in here */ - if (IW_IS_SET(cmd) && (iwr->u.data.length != 0)) { - err = copy_from_user(extra, iwr->u.data.pointer, - extra_size); - if (err) { - kfree(extra); - return -EFAULT; - } - } - - /* Call the handler */ - ret = handler(dev, &info, &(iwr->u), extra); - - /* If we have something to return to the user */ - if (!ret && IW_IS_GET(cmd)) { - - /* Adjust for the actual length if it's variable, - * avoid leaking kernel bits outside. */ - if (!(descr->get_args & IW_PRIV_SIZE_FIXED)) { - extra_size = adjust_priv_size(descr->get_args, - &(iwr->u)); - } - - err = copy_to_user(iwr->u.data.pointer, extra, - extra_size); - if (err) - ret = -EFAULT; - } - - /* Cleanup - I told you it wasn't that long ;-) */ - kfree(extra); - } - - - /* Call commit handler if needed and defined */ - if (ret == -EIWCOMMIT) - ret = call_commit_handler(dev); - - return ret; -} - -/* ---------------------------------------------------------------- */ -/* - * Main IOCTl dispatcher. - * Check the type of IOCTL and call the appropriate wrapper... - */ -static int wireless_process_ioctl(struct ifreq *ifr, unsigned int cmd) -{ - struct net_device *dev; - iw_handler handler; - - /* Permissions are already checked in dev_ioctl() before calling us. - * The copy_to/from_user() of ifr is also dealt with in there */ - - /* Make sure the device exist */ - if ((dev = __dev_get_by_name(ifr->ifr_name)) == NULL) - return -ENODEV; - - /* A bunch of special cases, then the generic case... - * Note that 'cmd' is already filtered in dev_ioctl() with - * (cmd >= SIOCIWFIRST && cmd <= SIOCIWLAST) */ - if (cmd == SIOCGIWSTATS) - return ioctl_standard_call(dev, ifr, cmd, - &iw_handler_get_iwstats); - - if (cmd == SIOCGIWPRIV && dev->wireless_handlers) - return ioctl_standard_call(dev, ifr, cmd, - &iw_handler_get_private); - - /* Basic check */ - if (!netif_device_present(dev)) - return -ENODEV; - - /* New driver API : try to find the handler */ - handler = get_handler(dev, cmd); - if (handler) { - /* Standard and private are not the same */ - if (cmd < SIOCIWFIRSTPRIV) - return ioctl_standard_call(dev, ifr, cmd, handler); - else - return ioctl_private_call(dev, ifr, cmd, handler); - } - /* Old driver API : call driver ioctl handler */ - if (dev->do_ioctl) - return dev->do_ioctl(dev, ifr, cmd); - return -EOPNOTSUPP; -} - -/* entry point from dev ioctl */ -int wext_handle_ioctl(struct ifreq *ifr, unsigned int cmd, - void __user *arg) -{ - int ret; - - /* If command is `set a parameter', or - * `get the encoding parameters', check if - * the user has the right to do it */ - if ((IW_IS_SET(cmd) || cmd == SIOCGIWENCODE || cmd == SIOCGIWENCODEEXT) - && !capable(CAP_NET_ADMIN)) - return -EPERM; - - dev_load(ifr->ifr_name); - rtnl_lock(); - ret = wireless_process_ioctl(ifr, cmd); - rtnl_unlock(); - if (IW_IS_GET(cmd) && copy_to_user(arg, ifr, sizeof(struct ifreq))) - return -EFAULT; - return ret; -} - -/************************* EVENT PROCESSING *************************/ -/* - * Process events generated by the wireless layer or the driver. - * Most often, the event will be propagated through rtnetlink - */ - -/* ---------------------------------------------------------------- */ -/* - * Locking... - * ---------- - * - * Thanks to Herbert Xu <herbert@gondor.apana.org.au> for fixing - * the locking issue in here and implementing this code ! - * - * The issue : wireless_send_event() is often called in interrupt context, - * while the Netlink layer can never be called in interrupt context. - * The fully formed RtNetlink events are queued, and then a tasklet is run - * to feed those to Netlink. - * The skb_queue is interrupt safe, and its lock is not held while calling - * Netlink, so there is no possibility of dealock. - * Jean II - */ - -static struct sk_buff_head wireless_nlevent_queue; - -static int __init wireless_nlevent_init(void) -{ - skb_queue_head_init(&wireless_nlevent_queue); - return 0; -} - -subsys_initcall(wireless_nlevent_init); - -static void wireless_nlevent_process(unsigned long data) -{ - struct sk_buff *skb; - - while ((skb = skb_dequeue(&wireless_nlevent_queue))) - rtnl_notify(skb, 0, RTNLGRP_LINK, NULL, GFP_ATOMIC); -} - -static DECLARE_TASKLET(wireless_nlevent_tasklet, wireless_nlevent_process, 0); - -/* ---------------------------------------------------------------- */ -/* - * Fill a rtnetlink message with our event data. - * Note that we propage only the specified event and don't dump the - * current wireless config. Dumping the wireless config is far too - * expensive (for each parameter, the driver need to query the hardware). - */ -static int rtnetlink_fill_iwinfo(struct sk_buff *skb, struct net_device *dev, - int type, char *event, int event_len) -{ - struct ifinfomsg *r; - struct nlmsghdr *nlh; - unsigned char *b = skb_tail_pointer(skb); - - nlh = NLMSG_PUT(skb, 0, 0, type, sizeof(*r)); - r = NLMSG_DATA(nlh); - r->ifi_family = AF_UNSPEC; - r->__ifi_pad = 0; - r->ifi_type = dev->type; - r->ifi_index = dev->ifindex; - r->ifi_flags = dev_get_flags(dev); - r->ifi_change = 0; /* Wireless changes don't affect those flags */ - - /* Add the wireless events in the netlink packet */ - RTA_PUT(skb, IFLA_WIRELESS, event_len, event); - - nlh->nlmsg_len = skb_tail_pointer(skb) - b; - return skb->len; - -nlmsg_failure: -rtattr_failure: - nlmsg_trim(skb, b); - return -1; -} - -/* ---------------------------------------------------------------- */ -/* - * Create and broadcast and send it on the standard rtnetlink socket - * This is a pure clone rtmsg_ifinfo() in net/core/rtnetlink.c - * Andrzej Krzysztofowicz mandated that I used a IFLA_XXX field - * within a RTM_NEWLINK event. - */ -static void rtmsg_iwinfo(struct net_device *dev, char *event, int event_len) -{ - struct sk_buff *skb; - int size = NLMSG_GOODSIZE; - - skb = alloc_skb(size, GFP_ATOMIC); - if (!skb) - return; - - if (rtnetlink_fill_iwinfo(skb, dev, RTM_NEWLINK, - event, event_len) < 0) { - kfree_skb(skb); - return; - } - NETLINK_CB(skb).dst_group = RTNLGRP_LINK; - skb_queue_tail(&wireless_nlevent_queue, skb); - tasklet_schedule(&wireless_nlevent_tasklet); -} - -/* ---------------------------------------------------------------- */ -/* - * Main event dispatcher. Called from other parts and drivers. - * Send the event on the appropriate channels. - * May be called from interrupt context. - */ -void wireless_send_event(struct net_device * dev, - unsigned int cmd, - union iwreq_data * wrqu, - char * extra) -{ - const struct iw_ioctl_description * descr = NULL; - int extra_len = 0; - struct iw_event *event; /* Mallocated whole event */ - int event_len; /* Its size */ - int hdr_len; /* Size of the event header */ - int wrqu_off = 0; /* Offset in wrqu */ - /* Don't "optimise" the following variable, it will crash */ - unsigned cmd_index; /* *MUST* be unsigned */ - - /* Get the description of the Event */ - if (cmd <= SIOCIWLAST) { - cmd_index = cmd - SIOCIWFIRST; - if (cmd_index < standard_ioctl_num) - descr = &(standard_ioctl[cmd_index]); - } else { - cmd_index = cmd - IWEVFIRST; - if (cmd_index < standard_event_num) - descr = &(standard_event[cmd_index]); - } - /* Don't accept unknown events */ - if (descr == NULL) { - /* Note : we don't return an error to the driver, because - * the driver would not know what to do about it. It can't - * return an error to the user, because the event is not - * initiated by a user request. - * The best the driver could do is to log an error message. - * We will do it ourselves instead... - */ - printk(KERN_ERR "%s (WE) : Invalid/Unknown Wireless Event (0x%04X)\n", - dev->name, cmd); - return; - } - - /* Check extra parameters and set extra_len */ - if (descr->header_type == IW_HEADER_TYPE_POINT) { - /* Check if number of token fits within bounds */ - if (wrqu->data.length > descr->max_tokens) { - printk(KERN_ERR "%s (WE) : Wireless Event too big (%d)\n", dev->name, wrqu->data.length); - return; - } - if (wrqu->data.length < descr->min_tokens) { - printk(KERN_ERR "%s (WE) : Wireless Event too small (%d)\n", dev->name, wrqu->data.length); - return; - } - /* Calculate extra_len - extra is NULL for restricted events */ - if (extra != NULL) - extra_len = wrqu->data.length * descr->token_size; - /* Always at an offset in wrqu */ - wrqu_off = IW_EV_POINT_OFF; - } - - /* Total length of the event */ - hdr_len = event_type_size[descr->header_type]; - event_len = hdr_len + extra_len; - - /* Create temporary buffer to hold the event */ - event = kmalloc(event_len, GFP_ATOMIC); - if (event == NULL) - return; - - /* Fill event */ - event->len = event_len; - event->cmd = cmd; - memcpy(&event->u, ((char *) wrqu) + wrqu_off, hdr_len - IW_EV_LCP_LEN); - if (extra) - memcpy(((char *) event) + hdr_len, extra, extra_len); - - /* Send via the RtNetlink event channel */ - rtmsg_iwinfo(dev, (char *) event, event_len); - - /* Cleanup */ - kfree(event); - - return; /* Always success, I guess ;-) */ -} -EXPORT_SYMBOL(wireless_send_event); - -/********************** ENHANCED IWSPY SUPPORT **********************/ -/* - * In the old days, the driver was handling spy support all by itself. - * Now, the driver can delegate this task to Wireless Extensions. - * It needs to use those standard spy iw_handler in struct iw_handler_def, - * push data to us via wireless_spy_update() and include struct iw_spy_data - * in its private part (and export it in net_device->wireless_data->spy_data). - * One of the main advantage of centralising spy support here is that - * it becomes much easier to improve and extend it without having to touch - * the drivers. One example is the addition of the Spy-Threshold events. - */ - -/* ---------------------------------------------------------------- */ -/* - * Return the pointer to the spy data in the driver. - * Because this is called on the Rx path via wireless_spy_update(), - * we want it to be efficient... - */ -static inline struct iw_spy_data *get_spydata(struct net_device *dev) -{ - /* This is the new way */ - if (dev->wireless_data) - return dev->wireless_data->spy_data; - return NULL; -} - -/*------------------------------------------------------------------*/ -/* - * Standard Wireless Handler : set Spy List - */ -int iw_handler_set_spy(struct net_device * dev, - struct iw_request_info * info, - union iwreq_data * wrqu, - char * extra) -{ - struct iw_spy_data * spydata = get_spydata(dev); - struct sockaddr * address = (struct sockaddr *) extra; - - /* Make sure driver is not buggy or using the old API */ - if (!spydata) - return -EOPNOTSUPP; - - /* Disable spy collection while we copy the addresses. - * While we copy addresses, any call to wireless_spy_update() - * will NOP. This is OK, as anyway the addresses are changing. */ - spydata->spy_number = 0; - - /* We want to operate without locking, because wireless_spy_update() - * most likely will happen in the interrupt handler, and therefore - * have its own locking constraints and needs performance. - * The rtnl_lock() make sure we don't race with the other iw_handlers. - * This make sure wireless_spy_update() "see" that the spy list - * is temporarily disabled. */ - smp_wmb(); - - /* Are there are addresses to copy? */ - if (wrqu->data.length > 0) { - int i; - - /* Copy addresses */ - for (i = 0; i < wrqu->data.length; i++) - memcpy(spydata->spy_address[i], address[i].sa_data, - ETH_ALEN); - /* Reset stats */ - memset(spydata->spy_stat, 0, - sizeof(struct iw_quality) * IW_MAX_SPY); - } - - /* Make sure above is updated before re-enabling */ - smp_wmb(); - - /* Enable addresses */ - spydata->spy_number = wrqu->data.length; - - return 0; -} -EXPORT_SYMBOL(iw_handler_set_spy); - -/*------------------------------------------------------------------*/ -/* - * Standard Wireless Handler : get Spy List - */ -int iw_handler_get_spy(struct net_device * dev, - struct iw_request_info * info, - union iwreq_data * wrqu, - char * extra) -{ - struct iw_spy_data * spydata = get_spydata(dev); - struct sockaddr * address = (struct sockaddr *) extra; - int i; - - /* Make sure driver is not buggy or using the old API */ - if (!spydata) - return -EOPNOTSUPP; - - wrqu->data.length = spydata->spy_number; - - /* Copy addresses. */ - for (i = 0; i < spydata->spy_number; i++) { - memcpy(address[i].sa_data, spydata->spy_address[i], ETH_ALEN); - address[i].sa_family = AF_UNIX; - } - /* Copy stats to the user buffer (just after). */ - if (spydata->spy_number > 0) - memcpy(extra + (sizeof(struct sockaddr) *spydata->spy_number), - spydata->spy_stat, - sizeof(struct iw_quality) * spydata->spy_number); - /* Reset updated flags. */ - for (i = 0; i < spydata->spy_number; i++) - spydata->spy_stat[i].updated &= ~IW_QUAL_ALL_UPDATED; - return 0; -} -EXPORT_SYMBOL(iw_handler_get_spy); - -/*------------------------------------------------------------------*/ -/* - * Standard Wireless Handler : set spy threshold - */ -int iw_handler_set_thrspy(struct net_device * dev, - struct iw_request_info *info, - union iwreq_data * wrqu, - char * extra) -{ - struct iw_spy_data * spydata = get_spydata(dev); - struct iw_thrspy * threshold = (struct iw_thrspy *) extra; - - /* Make sure driver is not buggy or using the old API */ - if (!spydata) - return -EOPNOTSUPP; - - /* Just do it */ - memcpy(&(spydata->spy_thr_low), &(threshold->low), - 2 * sizeof(struct iw_quality)); - - /* Clear flag */ - memset(spydata->spy_thr_under, '\0', sizeof(spydata->spy_thr_under)); - - return 0; -} -EXPORT_SYMBOL(iw_handler_set_thrspy); - -/*------------------------------------------------------------------*/ -/* - * Standard Wireless Handler : get spy threshold - */ -int iw_handler_get_thrspy(struct net_device * dev, - struct iw_request_info *info, - union iwreq_data * wrqu, - char * extra) -{ - struct iw_spy_data * spydata = get_spydata(dev); - struct iw_thrspy * threshold = (struct iw_thrspy *) extra; - - /* Make sure driver is not buggy or using the old API */ - if (!spydata) - return -EOPNOTSUPP; - - /* Just do it */ - memcpy(&(threshold->low), &(spydata->spy_thr_low), - 2 * sizeof(struct iw_quality)); - - return 0; -} -EXPORT_SYMBOL(iw_handler_get_thrspy); - -/*------------------------------------------------------------------*/ -/* - * Prepare and send a Spy Threshold event - */ -static void iw_send_thrspy_event(struct net_device * dev, - struct iw_spy_data * spydata, - unsigned char * address, - struct iw_quality * wstats) -{ - union iwreq_data wrqu; - struct iw_thrspy threshold; - - /* Init */ - wrqu.data.length = 1; - wrqu.data.flags = 0; - /* Copy address */ - memcpy(threshold.addr.sa_data, address, ETH_ALEN); - threshold.addr.sa_family = ARPHRD_ETHER; - /* Copy stats */ - memcpy(&(threshold.qual), wstats, sizeof(struct iw_quality)); - /* Copy also thresholds */ - memcpy(&(threshold.low), &(spydata->spy_thr_low), - 2 * sizeof(struct iw_quality)); - - /* Send event to user space */ - wireless_send_event(dev, SIOCGIWTHRSPY, &wrqu, (char *) &threshold); -} - -/* ---------------------------------------------------------------- */ -/* - * Call for the driver to update the spy data. - * For now, the spy data is a simple array. As the size of the array is - * small, this is good enough. If we wanted to support larger number of - * spy addresses, we should use something more efficient... - */ -void wireless_spy_update(struct net_device * dev, - unsigned char * address, - struct iw_quality * wstats) -{ - struct iw_spy_data * spydata = get_spydata(dev); - int i; - int match = -1; - - /* Make sure driver is not buggy or using the old API */ - if (!spydata) - return; - - /* Update all records that match */ - for (i = 0; i < spydata->spy_number; i++) - if (!compare_ether_addr(address, spydata->spy_address[i])) { - memcpy(&(spydata->spy_stat[i]), wstats, - sizeof(struct iw_quality)); - match = i; - } - - /* Generate an event if we cross the spy threshold. - * To avoid event storms, we have a simple hysteresis : we generate - * event only when we go under the low threshold or above the - * high threshold. */ - if (match >= 0) { - if (spydata->spy_thr_under[match]) { - if (wstats->level > spydata->spy_thr_high.level) { - spydata->spy_thr_under[match] = 0; - iw_send_thrspy_event(dev, spydata, - address, wstats); - } - } else { - if (wstats->level < spydata->spy_thr_low.level) { - spydata->spy_thr_under[match] = 1; - iw_send_thrspy_event(dev, spydata, - address, wstats); - } - } - } -} -EXPORT_SYMBOL(wireless_spy_update); |