From b23aa676ab9d54469cda9f7151f51a2851c6f36e Mon Sep 17 00:00:00 2001 From: Samuel Ortiz Date: Wed, 1 Jul 2009 21:26:54 +0200 Subject: cfg80211: connect/disconnect API This patch introduces the cfg80211 connect/disconnect API. The goal here is to run the AUTH and ASSOC steps in one call. This is needed for some fullmac cards that run both steps directly from the target, after the host driver sends a connect command. Additionally, all the new crypto parameters for connect() are now also valid for associate() -- although associate requires the IEs to be used, the information can be useful for drivers and should be given. Signed-off-by: Samuel Ortiz Signed-off-by: Johannes Berg Signed-off-by: John W. Linville --- net/wireless/sme.c | 224 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 224 insertions(+) create mode 100644 net/wireless/sme.c (limited to 'net/wireless/sme.c') diff --git a/net/wireless/sme.c b/net/wireless/sme.c new file mode 100644 index 0000000..fc11703 --- /dev/null +++ b/net/wireless/sme.c @@ -0,0 +1,224 @@ +/* + * SME code for cfg80211's connect emulation. + * + * Copyright 2009 Johannes Berg + * Copyright (C) 2009 Intel Corporation. All rights reserved. + */ + +#include +#include +#include +#include +#include +#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; +} -- cgit v1.1