diff options
Diffstat (limited to 'net/wireless/sme.c')
| -rw-r--r-- | net/wireless/sme.c | 224 |
1 files changed, 224 insertions, 0 deletions
diff --git a/net/wireless/sme.c b/net/wireless/sme.c new file mode 100644 index 00000000000..fc117031d0b --- /dev/null +++ b/net/wireless/sme.c @@ -0,0 +1,224 @@ +/* + * SME code for cfg80211's connect emulation. + * + * Copyright 2009 Johannes Berg <johannes@sipsolutions.net> + * Copyright (C) 2009 Intel Corporation. All rights reserved. + */ + +#include <linux/etherdevice.h> +#include <linux/if_arp.h> +#include <linux/workqueue.h> +#include <net/cfg80211.h> +#include <net/rtnetlink.h> +#include "nl80211.h" + + +void cfg80211_connect_result(struct net_device *dev, const u8 *bssid, + const u8 *req_ie, size_t req_ie_len, + const u8 *resp_ie, size_t resp_ie_len, + u16 status, gfp_t gfp) +{ + struct wireless_dev *wdev = dev->ieee80211_ptr; + struct cfg80211_bss *bss; +#ifdef CONFIG_WIRELESS_EXT + union iwreq_data wrqu; +#endif + + if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION)) + return; + + if (WARN_ON(wdev->sme_state != CFG80211_SME_CONNECTING)) + return; + + if (wdev->current_bss) { + cfg80211_unhold_bss(wdev->current_bss); + cfg80211_put_bss(wdev->current_bss); + wdev->current_bss = NULL; + } + + if (status == WLAN_STATUS_SUCCESS) { + bss = cfg80211_get_bss(wdev->wiphy, NULL, bssid, + wdev->ssid, wdev->ssid_len, + WLAN_CAPABILITY_ESS, + WLAN_CAPABILITY_ESS); + + if (WARN_ON(!bss)) + return; + + cfg80211_hold_bss(bss); + wdev->current_bss = bss; + + wdev->sme_state = CFG80211_SME_CONNECTED; + } else { + wdev->sme_state = CFG80211_SME_IDLE; + } + + nl80211_send_connect_result(wiphy_to_dev(wdev->wiphy), dev, bssid, + req_ie, req_ie_len, resp_ie, resp_ie_len, + status, gfp); + +#ifdef CONFIG_WIRELESS_EXT + if (req_ie && status == WLAN_STATUS_SUCCESS) { + memset(&wrqu, 0, sizeof(wrqu)); + wrqu.data.length = req_ie_len; + wireless_send_event(dev, IWEVASSOCRESPIE, &wrqu, req_ie); + } + + if (resp_ie && status == WLAN_STATUS_SUCCESS) { + memset(&wrqu, 0, sizeof(wrqu)); + wrqu.data.length = resp_ie_len; + wireless_send_event(dev, IWEVASSOCRESPIE, &wrqu, resp_ie); + } + + memset(&wrqu, 0, sizeof(wrqu)); + wrqu.ap_addr.sa_family = ARPHRD_ETHER; + if (bssid) + memcpy(wrqu.ap_addr.sa_data, bssid, ETH_ALEN); + wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL); +#endif +} +EXPORT_SYMBOL(cfg80211_connect_result); + +void cfg80211_roamed(struct net_device *dev, const u8 *bssid, + const u8 *req_ie, size_t req_ie_len, + const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp) +{ + struct wireless_dev *wdev = dev->ieee80211_ptr; + struct cfg80211_bss *bss; +#ifdef CONFIG_WIRELESS_EXT + union iwreq_data wrqu; +#endif + + if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION)) + return; + + if (WARN_ON(wdev->sme_state != CFG80211_SME_CONNECTED)) + return; + + /* internal error -- how did we get to CONNECTED w/o BSS? */ + if (WARN_ON(!wdev->current_bss)) { + return; + } + + cfg80211_unhold_bss(wdev->current_bss); + cfg80211_put_bss(wdev->current_bss); + wdev->current_bss = NULL; + + bss = cfg80211_get_bss(wdev->wiphy, NULL, bssid, + wdev->ssid, wdev->ssid_len, + WLAN_CAPABILITY_ESS, WLAN_CAPABILITY_ESS); + + if (WARN_ON(!bss)) + return; + + cfg80211_hold_bss(bss); + wdev->current_bss = bss; + + nl80211_send_roamed(wiphy_to_dev(wdev->wiphy), dev, bssid, + req_ie, req_ie_len, resp_ie, resp_ie_len, gfp); + +#ifdef CONFIG_WIRELESS_EXT + if (req_ie) { + memset(&wrqu, 0, sizeof(wrqu)); + wrqu.data.length = req_ie_len; + wireless_send_event(dev, IWEVASSOCRESPIE, &wrqu, req_ie); + } + + if (resp_ie) { + memset(&wrqu, 0, sizeof(wrqu)); + wrqu.data.length = resp_ie_len; + wireless_send_event(dev, IWEVASSOCRESPIE, &wrqu, resp_ie); + } + + memset(&wrqu, 0, sizeof(wrqu)); + wrqu.ap_addr.sa_family = ARPHRD_ETHER; + memcpy(wrqu.ap_addr.sa_data, bssid, ETH_ALEN); + wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL); +#endif +} +EXPORT_SYMBOL(cfg80211_roamed); + +static void __cfg80211_disconnected(struct net_device *dev, gfp_t gfp, + u8 *ie, size_t ie_len, u16 reason, + bool from_ap) +{ + struct wireless_dev *wdev = dev->ieee80211_ptr; +#ifdef CONFIG_WIRELESS_EXT + union iwreq_data wrqu; +#endif + + if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION)) + return; + + if (WARN_ON(wdev->sme_state != CFG80211_SME_CONNECTED)) + return; + + if (wdev->current_bss) { + cfg80211_unhold_bss(wdev->current_bss); + cfg80211_put_bss(wdev->current_bss); + } + + wdev->current_bss = NULL; + wdev->sme_state = CFG80211_SME_IDLE; + + nl80211_send_disconnected(wiphy_to_dev(wdev->wiphy), dev, + reason, ie, ie_len, from_ap, gfp); + +#ifdef CONFIG_WIRELESS_EXT + memset(&wrqu, 0, sizeof(wrqu)); + wrqu.ap_addr.sa_family = ARPHRD_ETHER; + wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL); +#endif +} + +void cfg80211_disconnected(struct net_device *dev, u16 reason, + u8 *ie, size_t ie_len, gfp_t gfp) +{ + __cfg80211_disconnected(dev, reason, ie, ie_len, true, gfp); +} +EXPORT_SYMBOL(cfg80211_disconnected); + +int cfg80211_connect(struct cfg80211_registered_device *rdev, + struct net_device *dev, + struct cfg80211_connect_params *connect) +{ + int err; + struct wireless_dev *wdev = dev->ieee80211_ptr; + + if (wdev->sme_state != CFG80211_SME_IDLE) + return -EALREADY; + + if (!rdev->ops->connect) { + return -EOPNOTSUPP; + } else { + wdev->sme_state = CFG80211_SME_CONNECTING; + err = rdev->ops->connect(&rdev->wiphy, dev, connect); + if (err) { + wdev->sme_state = CFG80211_SME_IDLE; + return err; + } + } + + memcpy(wdev->ssid, connect->ssid, connect->ssid_len); + wdev->ssid_len = connect->ssid_len; + + return 0; +} + +int cfg80211_disconnect(struct cfg80211_registered_device *rdev, + struct net_device *dev, u16 reason) +{ + int err; + + if (!rdev->ops->disconnect) { + return -EOPNOTSUPP; + } else { + err = rdev->ops->disconnect(&rdev->wiphy, dev, reason); + if (err) + return err; + } + + __cfg80211_disconnected(dev, 0, NULL, 0, false, GFP_KERNEL); + + return 0; +} |