diff options
Diffstat (limited to 'package/mac80211/src/wireless/nl80211.c')
| -rw-r--r-- | package/mac80211/src/wireless/nl80211.c | 919 |
1 files changed, 178 insertions, 741 deletions
diff --git a/package/mac80211/src/wireless/nl80211.c b/package/mac80211/src/wireless/nl80211.c index ffbe6288a2..58717f3037 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); |