From 964dc9e2c3aaccacacd40640964a58544fb5769a Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Mon, 3 Jun 2013 17:25:34 +0200 Subject: cfg80211: take WoWLAN support information out of wiphy struct There's no need to take up the space for devices that don't support WoWLAN, and most drivers can even make the support data static const (except where it's modified at runtime.) Signed-off-by: Johannes Berg --- net/wireless/core.c | 20 ++++++++++-------- net/wireless/nl80211.c | 56 ++++++++++++++++++++++++-------------------------- 2 files changed, 39 insertions(+), 37 deletions(-) (limited to 'net/wireless') diff --git a/net/wireless/core.c b/net/wireless/core.c index 41cec1776f4f..f553b9484c1e 100644 --- a/net/wireless/core.c +++ b/net/wireless/core.c @@ -449,8 +449,13 @@ int wiphy_register(struct wiphy *wiphy) u16 ifmodes = wiphy->interface_modes; #ifdef CONFIG_PM - if (WARN_ON((wiphy->wowlan.flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) && - !(wiphy->wowlan.flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY))) + if (WARN_ON(wiphy->wowlan && + (wiphy->wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) && + !(wiphy->wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY))) + return -EINVAL; + if (WARN_ON(wiphy->wowlan && + !wiphy->wowlan->flags && !wiphy->wowlan->n_patterns && + !wiphy->wowlan->tcp)) return -EINVAL; #endif @@ -540,12 +545,11 @@ int wiphy_register(struct wiphy *wiphy) } #ifdef CONFIG_PM - if (rdev->wiphy.wowlan.n_patterns) { - if (WARN_ON(!rdev->wiphy.wowlan.pattern_min_len || - rdev->wiphy.wowlan.pattern_min_len > - rdev->wiphy.wowlan.pattern_max_len)) - return -EINVAL; - } + if (WARN_ON(rdev->wiphy.wowlan && rdev->wiphy.wowlan->n_patterns && + (!rdev->wiphy.wowlan->pattern_min_len || + rdev->wiphy.wowlan->pattern_min_len > + rdev->wiphy.wowlan->pattern_max_len))) + return -EINVAL; #endif /* check and set up bitrates */ diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index 31d265f36d2c..7ee9af3283a8 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -908,7 +908,7 @@ nla_put_failure: static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev, struct sk_buff *msg) { - const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan.tcp; + const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp; struct nlattr *nl_tcp; if (!tcp) @@ -951,37 +951,37 @@ static int nl80211_send_wowlan(struct sk_buff *msg, { struct nlattr *nl_wowlan; - if (!dev->wiphy.wowlan.flags && !dev->wiphy.wowlan.n_patterns) + if (!dev->wiphy.wowlan) return 0; nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED); if (!nl_wowlan) return -ENOBUFS; - if (((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_ANY) && + if (((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) && nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) || - ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_DISCONNECT) && + ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) && nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) || - ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_MAGIC_PKT) && + ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) && nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) || - ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) && + ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) && nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) || - ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) && + ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) && nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) || - ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) && + ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) && nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) || - ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) && + ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) && nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) || - ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_RFKILL_RELEASE) && + ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) && nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))) return -ENOBUFS; - if (dev->wiphy.wowlan.n_patterns) { + if (dev->wiphy.wowlan->n_patterns) { struct nl80211_wowlan_pattern_support pat = { - .max_patterns = dev->wiphy.wowlan.n_patterns, - .min_pattern_len = dev->wiphy.wowlan.pattern_min_len, - .max_pattern_len = dev->wiphy.wowlan.pattern_max_len, - .max_pkt_offset = dev->wiphy.wowlan.max_pkt_offset, + .max_patterns = dev->wiphy.wowlan->n_patterns, + .min_pattern_len = dev->wiphy.wowlan->pattern_min_len, + .max_pattern_len = dev->wiphy.wowlan->pattern_max_len, + .max_pkt_offset = dev->wiphy.wowlan->max_pkt_offset, }; if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN, @@ -7580,8 +7580,7 @@ static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info) void *hdr; u32 size = NLMSG_DEFAULT_SIZE; - if (!rdev->wiphy.wowlan.flags && !rdev->wiphy.wowlan.n_patterns && - !rdev->wiphy.wowlan.tcp) + if (!rdev->wiphy.wowlan) return -EOPNOTSUPP; if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) { @@ -7654,7 +7653,7 @@ static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev, u32 data_size, wake_size, tokens_size = 0, wake_mask_size; int err, port; - if (!rdev->wiphy.wowlan.tcp) + if (!rdev->wiphy.wowlan->tcp) return -EINVAL; err = nla_parse(tb, MAX_NL80211_WOWLAN_TCP, @@ -7674,16 +7673,16 @@ static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev, return -EINVAL; data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]); - if (data_size > rdev->wiphy.wowlan.tcp->data_payload_max) + if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max) return -EINVAL; if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) > - rdev->wiphy.wowlan.tcp->data_interval_max || + rdev->wiphy.wowlan->tcp->data_interval_max || nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0) return -EINVAL; wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]); - if (wake_size > rdev->wiphy.wowlan.tcp->wake_payload_max) + if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max) return -EINVAL; wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]); @@ -7698,13 +7697,13 @@ static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev, if (!tok->len || tokens_size % tok->len) return -EINVAL; - if (!rdev->wiphy.wowlan.tcp->tok) + if (!rdev->wiphy.wowlan->tcp->tok) return -EINVAL; - if (tok->len > rdev->wiphy.wowlan.tcp->tok->max_len) + if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len) return -EINVAL; - if (tok->len < rdev->wiphy.wowlan.tcp->tok->min_len) + if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len) return -EINVAL; - if (tokens_size > rdev->wiphy.wowlan.tcp->tok->bufsize) + if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize) return -EINVAL; if (tok->offset + tok->len > data_size) return -EINVAL; @@ -7712,7 +7711,7 @@ static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev, if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) { seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]); - if (!rdev->wiphy.wowlan.tcp->seq) + if (!rdev->wiphy.wowlan->tcp->seq) return -EINVAL; if (seq->len == 0 || seq->len > 4) return -EINVAL; @@ -7793,12 +7792,11 @@ static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info) struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG]; struct cfg80211_wowlan new_triggers = {}; struct cfg80211_wowlan *ntrig; - struct wiphy_wowlan_support *wowlan = &rdev->wiphy.wowlan; + const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan; int err, i; bool prev_enabled = rdev->wiphy.wowlan_config; - if (!rdev->wiphy.wowlan.flags && !rdev->wiphy.wowlan.n_patterns && - !rdev->wiphy.wowlan.tcp) + if (!wowlan) return -EOPNOTSUPP; if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) { -- cgit v1.2.3 From 9c90a9f64c21b0a3983655c9c08cf98489057a43 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Tue, 4 Jun 2013 12:46:03 +0200 Subject: nl80211: remove bogus genlmsg_end() error checking genlmsg_end() can't return an error since it returns the skb length so remove checks treating the return value as an error code. Signed-off-by: Johannes Berg --- net/wireless/nl80211.c | 40 +++++++--------------------------------- 1 file changed, 7 insertions(+), 33 deletions(-) (limited to 'net/wireless') diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index 7ee9af3283a8..ce949e38178c 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -9848,7 +9848,6 @@ static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd, struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); struct sk_buff *msg; void *hdr; - int err; u32 nlportid = ACCESS_ONCE(wdev->ap_unexpected_nlportid); if (!nlportid) @@ -9869,12 +9868,7 @@ static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd, nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) goto nla_put_failure; - err = genlmsg_end(msg, hdr); - if (err < 0) { - nlmsg_free(msg); - return true; - } - + genlmsg_end(msg, hdr); genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid); return true; @@ -10317,10 +10311,7 @@ nl80211_radar_notify(struct cfg80211_registered_device *rdev, if (nl80211_send_chandef(msg, chandef)) goto nla_put_failure; - if (genlmsg_end(msg, hdr) < 0) { - nlmsg_free(msg); - return; - } + genlmsg_end(msg, hdr); genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, nl80211_mlme_mcgrp.id, gfp); @@ -10386,7 +10377,6 @@ void cfg80211_probe_status(struct net_device *dev, const u8 *addr, struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); struct sk_buff *msg; void *hdr; - int err; trace_cfg80211_probe_status(dev, addr, cookie, acked); @@ -10408,11 +10398,7 @@ void cfg80211_probe_status(struct net_device *dev, const u8 *addr, (acked && nla_put_flag(msg, NL80211_ATTR_ACK))) goto nla_put_failure; - err = genlmsg_end(msg, hdr); - if (err < 0) { - nlmsg_free(msg); - return; - } + genlmsg_end(msg, hdr); genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, nl80211_mlme_mcgrp.id, gfp); @@ -10478,7 +10464,7 @@ void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev, struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); struct sk_buff *msg; void *hdr; - int err, size = 200; + int size = 200; trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup); @@ -10564,9 +10550,7 @@ void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev, nla_nest_end(msg, reasons); } - err = genlmsg_end(msg, hdr); - if (err < 0) - goto free_msg; + genlmsg_end(msg, hdr); genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, nl80211_mlme_mcgrp.id, gfp); @@ -10586,7 +10570,6 @@ void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer, struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); struct sk_buff *msg; void *hdr; - int err; trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper, reason_code); @@ -10609,11 +10592,7 @@ void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer, nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code))) goto nla_put_failure; - err = genlmsg_end(msg, hdr); - if (err < 0) { - nlmsg_free(msg); - return; - } + genlmsg_end(msg, hdr); genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, nl80211_mlme_mcgrp.id, gfp); @@ -10671,7 +10650,6 @@ void cfg80211_ft_event(struct net_device *netdev, struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); struct sk_buff *msg; void *hdr; - int err; trace_cfg80211_ft_event(wiphy, netdev, ft_event); @@ -10697,11 +10675,7 @@ void cfg80211_ft_event(struct net_device *netdev, nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len, ft_event->ric_ies); - err = genlmsg_end(msg, hdr); - if (err < 0) { - nlmsg_free(msg); - return; - } + genlmsg_end(msg, hdr); genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0, nl80211_mlme_mcgrp.id, GFP_KERNEL); -- cgit v1.2.3 From 6ff57cf88807dd81300b5b9c623dc5eb6422b9f6 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Thu, 16 May 2013 00:55:00 +0200 Subject: cfg80211/mac80211: clean up cfg80211 SME APIs Do some cleanups in the cfg80211 SME APIs, which are only used by mac80211. Most of these functions get a frame passed, and there isn't really any reason to export multiple functions as cfg80211 can check the frame type instead, do that. Additionally, the API functions have confusing names like cfg80211_send_...() which was meant to indicate that it sends an event to userspace, but gets a bit confusing when there's both TX and RX and they're not all clearly labeled. Signed-off-by: Johannes Berg --- include/net/cfg80211.h | 91 ++++++++++++++++++++------------------------------ net/mac80211/mlme.c | 44 ++++++++++++------------ net/mac80211/rx.c | 26 ++++++--------- net/wireless/mlme.c | 86 +++++++++++++++++++++++++++++------------------ net/wireless/nl80211.c | 30 ++++++++--------- net/wireless/trace.h | 46 ++++++++++++++++++------- 6 files changed, 170 insertions(+), 153 deletions(-) (limited to 'net/wireless') diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h index 6169fca216b4..195330d4ef34 100644 --- a/include/net/cfg80211.h +++ b/include/net/cfg80211.h @@ -3432,59 +3432,66 @@ void cfg80211_put_bss(struct wiphy *wiphy, struct cfg80211_bss *bss); void cfg80211_unlink_bss(struct wiphy *wiphy, struct cfg80211_bss *bss); /** - * cfg80211_send_rx_auth - notification of processed authentication + * cfg80211_rx_mlme_mgmt - notification of processed MLME management frame * @dev: network device * @buf: authentication frame (header + body) * @len: length of the frame data * - * This function is called whenever an authentication has been processed in - * station mode. The driver is required to call either this function or - * cfg80211_send_auth_timeout() to indicate the result of cfg80211_ops::auth() - * call. This function may sleep. The caller must hold the corresponding wdev's - * mutex. + * This function is called whenever an authentication, disassociation or + * deauthentication frame has been received and processed in station mode. + * After being asked to authenticate via cfg80211_ops::auth() the driver must + * call either this function or cfg80211_auth_timeout(). + * After being asked to associate via cfg80211_ops::assoc() the driver must + * call either this function or cfg80211_auth_timeout(). + * While connected, the driver must calls this for received and processed + * disassociation and deauthentication frames. If the frame couldn't be used + * because it was unprotected, the driver must call the function + * cfg80211_rx_unprot_mlme_mgmt() instead. + * + * This function may sleep. The caller must hold the corresponding wdev's mutex. */ -void cfg80211_send_rx_auth(struct net_device *dev, const u8 *buf, size_t len); +void cfg80211_rx_mlme_mgmt(struct net_device *dev, const u8 *buf, size_t len); /** - * cfg80211_send_auth_timeout - notification of timed out authentication + * cfg80211_auth_timeout - notification of timed out authentication * @dev: network device * @addr: The MAC address of the device with which the authentication timed out * * This function may sleep. The caller must hold the corresponding wdev's * mutex. */ -void cfg80211_send_auth_timeout(struct net_device *dev, const u8 *addr); +void cfg80211_auth_timeout(struct net_device *dev, const u8 *addr); /** - * cfg80211_send_rx_assoc - notification of processed association + * cfg80211_rx_assoc_resp - notification of processed association response * @dev: network device - * @bss: the BSS struct association was requested for, the struct reference - * is owned by cfg80211 after this call - * @buf: (re)association response frame (header + body) + * @bss: the BSS that association was requested with, ownership of the pointer + * moves to cfg80211 in this call + * @buf: authentication frame (header + body) * @len: length of the frame data * - * This function is called whenever a (re)association response has been - * processed in station mode. The driver is required to call either this - * function or cfg80211_send_assoc_timeout() to indicate the result of - * cfg80211_ops::assoc() call. This function may sleep. The caller must hold - * the corresponding wdev's mutex. + * After being asked to associate via cfg80211_ops::assoc() the driver must + * call either this function or cfg80211_auth_timeout(). + * + * This function may sleep. The caller must hold the corresponding wdev's mutex. */ -void cfg80211_send_rx_assoc(struct net_device *dev, struct cfg80211_bss *bss, +void cfg80211_rx_assoc_resp(struct net_device *dev, + struct cfg80211_bss *bss, const u8 *buf, size_t len); /** - * cfg80211_send_assoc_timeout - notification of timed out association + * cfg80211_assoc_timeout - notification of timed out association * @dev: network device * @addr: The MAC address of the device with which the association timed out * * This function may sleep. The caller must hold the corresponding wdev's mutex. */ -void cfg80211_send_assoc_timeout(struct net_device *dev, const u8 *addr); +void cfg80211_assoc_timeout(struct net_device *dev, const u8 *addr); /** - * cfg80211_send_deauth - notification of processed deauthentication + * cfg80211_tx_mlme_mgmt - notification of transmitted deauth/disassoc frame * @dev: network device - * @buf: deauthentication frame (header + body) + * @buf: 802.11 frame (header + body) * @len: length of the frame data * * This function is called whenever deauthentication has been processed in @@ -3492,46 +3499,20 @@ void cfg80211_send_assoc_timeout(struct net_device *dev, const u8 *addr); * locally generated ones. This function may sleep. The caller must hold the * corresponding wdev's mutex. */ -void cfg80211_send_deauth(struct net_device *dev, const u8 *buf, size_t len); +void cfg80211_tx_mlme_mgmt(struct net_device *dev, const u8 *buf, size_t len); /** - * cfg80211_send_disassoc - notification of processed disassociation - * @dev: network device - * @buf: disassociation response frame (header + body) - * @len: length of the frame data - * - * This function is called whenever disassociation has been processed in - * station mode. This includes both received disassociation frames and locally - * generated ones. This function may sleep. The caller must hold the - * corresponding wdev's mutex. - */ -void cfg80211_send_disassoc(struct net_device *dev, const u8 *buf, size_t len); - -/** - * cfg80211_send_unprot_deauth - notification of unprotected deauthentication + * cfg80211_rx_unprot_mlme_mgmt - notification of unprotected mlme mgmt frame * @dev: network device * @buf: deauthentication frame (header + body) * @len: length of the frame data * - * This function is called whenever a received Deauthentication frame has been - * dropped in station mode because of MFP being used but the Deauthentication - * frame was not protected. This function may sleep. - */ -void cfg80211_send_unprot_deauth(struct net_device *dev, const u8 *buf, - size_t len); - -/** - * cfg80211_send_unprot_disassoc - notification of unprotected disassociation - * @dev: network device - * @buf: disassociation frame (header + body) - * @len: length of the frame data - * - * This function is called whenever a received Disassociation frame has been - * dropped in station mode because of MFP being used but the Disassociation + * This function is called whenever a received deauthentication or dissassoc + * frame has been dropped in station mode because of MFP being used but the * frame was not protected. This function may sleep. */ -void cfg80211_send_unprot_disassoc(struct net_device *dev, const u8 *buf, - size_t len); +void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, + const u8 *buf, size_t len); /** * cfg80211_michael_mic_failure - notification of Michael MIC failure (TKIP) diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c index 9950e13f641b..df8170a80a56 100644 --- a/net/mac80211/mlme.c +++ b/net/mac80211/mlme.c @@ -2155,7 +2155,8 @@ static void __ieee80211_disconnect(struct ieee80211_sub_if_data *sdata) IEEE80211_MAX_QUEUE_MAP, IEEE80211_QUEUE_STOP_REASON_CSA); - cfg80211_send_deauth(sdata->dev, frame_buf, IEEE80211_DEAUTH_FRAME_LEN); + cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf, + IEEE80211_DEAUTH_FRAME_LEN); sdata_unlock(sdata); } @@ -2302,7 +2303,7 @@ static void ieee80211_rx_mgmt_auth(struct ieee80211_sub_if_data *sdata, sdata_info(sdata, "%pM denied authentication (status %d)\n", mgmt->sa, status_code); ieee80211_destroy_auth_data(sdata, false); - cfg80211_send_rx_auth(sdata->dev, (u8 *)mgmt, len); + cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len); return; } @@ -2337,7 +2338,7 @@ static void ieee80211_rx_mgmt_auth(struct ieee80211_sub_if_data *sdata, * Report auth frame to user space for processing since another * round of Authentication frames is still needed. */ - cfg80211_send_rx_auth(sdata->dev, (u8 *)mgmt, len); + cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len); return; } @@ -2354,7 +2355,7 @@ static void ieee80211_rx_mgmt_auth(struct ieee80211_sub_if_data *sdata, } mutex_unlock(&sdata->local->sta_mtx); - cfg80211_send_rx_auth(sdata->dev, (u8 *)mgmt, len); + cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len); return; out_err: mutex_unlock(&sdata->local->sta_mtx); @@ -2387,7 +2388,7 @@ static void ieee80211_rx_mgmt_deauth(struct ieee80211_sub_if_data *sdata, ieee80211_set_disassoc(sdata, 0, 0, false, NULL); - cfg80211_send_deauth(sdata->dev, (u8 *)mgmt, len); + cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len); } @@ -2413,7 +2414,7 @@ static void ieee80211_rx_mgmt_disassoc(struct ieee80211_sub_if_data *sdata, ieee80211_set_disassoc(sdata, 0, 0, false, NULL); - cfg80211_send_disassoc(sdata->dev, (u8 *)mgmt, len); + cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len); } static void ieee80211_get_rates(struct ieee80211_supported_band *sband, @@ -2711,7 +2712,7 @@ static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata, /* oops -- internal error -- send timeout for now */ ieee80211_destroy_assoc_data(sdata, false); cfg80211_put_bss(sdata->local->hw.wiphy, bss); - cfg80211_send_assoc_timeout(sdata->dev, mgmt->bssid); + cfg80211_assoc_timeout(sdata->dev, mgmt->bssid); return; } sdata_info(sdata, "associated\n"); @@ -2724,7 +2725,7 @@ static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata, ieee80211_destroy_assoc_data(sdata, true); } - cfg80211_send_rx_assoc(sdata->dev, bss, (u8 *)mgmt, len); + cfg80211_rx_assoc_resp(sdata->dev, bss, (u8 *)mgmt, len); } static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata, @@ -3117,8 +3118,8 @@ static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata, ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, WLAN_REASON_DEAUTH_LEAVING, true, deauth_buf); - cfg80211_send_deauth(sdata->dev, deauth_buf, - sizeof(deauth_buf)); + cfg80211_tx_mlme_mgmt(sdata->dev, deauth_buf, + sizeof(deauth_buf)); return; } @@ -3236,7 +3237,8 @@ static void ieee80211_sta_connection_lost(struct ieee80211_sub_if_data *sdata, ieee80211_set_disassoc(sdata, IEEE80211_STYPE_DEAUTH, reason, tx, frame_buf); - cfg80211_send_deauth(sdata->dev, frame_buf, IEEE80211_DEAUTH_FRAME_LEN); + cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf, + IEEE80211_DEAUTH_FRAME_LEN); } static int ieee80211_probe_auth(struct ieee80211_sub_if_data *sdata) @@ -3427,7 +3429,7 @@ void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata) ieee80211_destroy_auth_data(sdata, false); - cfg80211_send_auth_timeout(sdata->dev, bssid); + cfg80211_auth_timeout(sdata->dev, bssid); } } else if (ifmgd->auth_data && ifmgd->auth_data->timeout_started) run_again(sdata, ifmgd->auth_data->timeout); @@ -3443,7 +3445,7 @@ void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata) ieee80211_destroy_assoc_data(sdata, false); - cfg80211_send_assoc_timeout(sdata->dev, bssid); + cfg80211_assoc_timeout(sdata->dev, bssid); } } else if (ifmgd->assoc_data && ifmgd->assoc_data->timeout_started) run_again(sdata, ifmgd->assoc_data->timeout); @@ -3992,8 +3994,8 @@ int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata, WLAN_REASON_UNSPECIFIED, false, frame_buf); - cfg80211_send_deauth(sdata->dev, frame_buf, - sizeof(frame_buf)); + cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf, + sizeof(frame_buf)); } sdata_info(sdata, "authenticate with %pM\n", req->bss->bssid); @@ -4055,8 +4057,8 @@ int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata, WLAN_REASON_UNSPECIFIED, false, frame_buf); - cfg80211_send_deauth(sdata->dev, frame_buf, - sizeof(frame_buf)); + cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf, + sizeof(frame_buf)); } if (ifmgd->auth_data && !ifmgd->auth_data->done) { @@ -4309,8 +4311,8 @@ int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata, out: if (report_frame) - cfg80211_send_deauth(sdata->dev, frame_buf, - IEEE80211_DEAUTH_FRAME_LEN); + cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf, + IEEE80211_DEAUTH_FRAME_LEN); return 0; } @@ -4340,8 +4342,8 @@ int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata, req->reason_code, !req->local_state_change, frame_buf); - cfg80211_send_disassoc(sdata->dev, frame_buf, - IEEE80211_DEAUTH_FRAME_LEN); + cfg80211_tx_mlme_mgmt(sdata->dev, frame_buf, + IEEE80211_DEAUTH_FRAME_LEN); return 0; } diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c index bdd7b4a719e9..23dbcfc69b3b 100644 --- a/net/mac80211/rx.c +++ b/net/mac80211/rx.c @@ -1747,27 +1747,21 @@ static int ieee80211_drop_unencrypted_mgmt(struct ieee80211_rx_data *rx) if (unlikely(!ieee80211_has_protected(fc) && ieee80211_is_unicast_robust_mgmt_frame(rx->skb) && rx->key)) { - if (ieee80211_is_deauth(fc)) - cfg80211_send_unprot_deauth(rx->sdata->dev, - rx->skb->data, - rx->skb->len); - else if (ieee80211_is_disassoc(fc)) - cfg80211_send_unprot_disassoc(rx->sdata->dev, - rx->skb->data, - rx->skb->len); + if (ieee80211_is_deauth(fc) || + ieee80211_is_disassoc(fc)) + cfg80211_rx_unprot_mlme_mgmt(rx->sdata->dev, + rx->skb->data, + rx->skb->len); return -EACCES; } /* BIP does not use Protected field, so need to check MMIE */ if (unlikely(ieee80211_is_multicast_robust_mgmt_frame(rx->skb) && ieee80211_get_mmie_keyidx(rx->skb) < 0)) { - if (ieee80211_is_deauth(fc)) - cfg80211_send_unprot_deauth(rx->sdata->dev, - rx->skb->data, - rx->skb->len); - else if (ieee80211_is_disassoc(fc)) - cfg80211_send_unprot_disassoc(rx->sdata->dev, - rx->skb->data, - rx->skb->len); + if (ieee80211_is_deauth(fc) || + ieee80211_is_disassoc(fc)) + cfg80211_rx_unprot_mlme_mgmt(rx->sdata->dev, + rx->skb->data, + rx->skb->len); return -EACCES; } /* diff --git a/net/wireless/mlme.c b/net/wireless/mlme.c index 7bde5d9c0003..4b9c2be0d56d 100644 --- a/net/wireless/mlme.c +++ b/net/wireless/mlme.c @@ -18,20 +18,7 @@ #include "rdev-ops.h" -void cfg80211_send_rx_auth(struct net_device *dev, const u8 *buf, size_t len) -{ - struct wireless_dev *wdev = dev->ieee80211_ptr; - struct wiphy *wiphy = wdev->wiphy; - struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); - - trace_cfg80211_send_rx_auth(dev); - - nl80211_send_rx_auth(rdev, dev, buf, len, GFP_KERNEL); - cfg80211_sme_rx_auth(dev, buf, len); -} -EXPORT_SYMBOL(cfg80211_send_rx_auth); - -void cfg80211_send_rx_assoc(struct net_device *dev, struct cfg80211_bss *bss, +void cfg80211_rx_assoc_resp(struct net_device *dev, struct cfg80211_bss *bss, const u8 *buf, size_t len) { u16 status_code; @@ -84,10 +71,10 @@ void cfg80211_send_rx_assoc(struct net_device *dev, struct cfg80211_bss *bss, status_code, status_code == WLAN_STATUS_SUCCESS, bss); } -EXPORT_SYMBOL(cfg80211_send_rx_assoc); +EXPORT_SYMBOL(cfg80211_rx_assoc_resp); -void cfg80211_send_deauth(struct net_device *dev, - const u8 *buf, size_t len) +static void cfg80211_process_deauth(struct net_device *dev, + const u8 *buf, size_t len) { struct wireless_dev *wdev = dev->ieee80211_ptr; struct wiphy *wiphy = wdev->wiphy; @@ -96,9 +83,6 @@ void cfg80211_send_deauth(struct net_device *dev, const u8 *bssid = mgmt->bssid; bool was_current = false; - trace_cfg80211_send_deauth(dev); - ASSERT_WDEV_LOCK(wdev); - if (wdev->current_bss && ether_addr_equal(wdev->current_bss->pub.bssid, bssid)) { cfg80211_unhold_bss(wdev->current_bss); @@ -123,10 +107,9 @@ void cfg80211_send_deauth(struct net_device *dev, false, NULL); } } -EXPORT_SYMBOL(cfg80211_send_deauth); -void cfg80211_send_disassoc(struct net_device *dev, - const u8 *buf, size_t len) +static void cfg80211_process_disassoc(struct net_device *dev, + const u8 *buf, size_t len) { struct wireless_dev *wdev = dev->ieee80211_ptr; struct wiphy *wiphy = wdev->wiphy; @@ -136,9 +119,6 @@ void cfg80211_send_disassoc(struct net_device *dev, u16 reason_code; bool from_ap; - trace_cfg80211_send_disassoc(dev); - ASSERT_WDEV_LOCK(wdev); - nl80211_send_disassoc(rdev, dev, buf, len, GFP_KERNEL); if (wdev->sme_state != CFG80211_SME_CONNECTED) @@ -153,15 +133,38 @@ void cfg80211_send_disassoc(struct net_device *dev, } else WARN_ON(1); - reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code); from_ap = !ether_addr_equal(mgmt->sa, dev->dev_addr); __cfg80211_disconnected(dev, NULL, 0, reason_code, from_ap); } -EXPORT_SYMBOL(cfg80211_send_disassoc); -void cfg80211_send_auth_timeout(struct net_device *dev, const u8 *addr) +void cfg80211_rx_mlme_mgmt(struct net_device *dev, const u8 *buf, size_t len) +{ + struct wireless_dev *wdev = dev->ieee80211_ptr; + struct wiphy *wiphy = wdev->wiphy; + struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); + struct ieee80211_mgmt *mgmt = (void *)buf; + + ASSERT_WDEV_LOCK(wdev); + + trace_cfg80211_rx_mlme_mgmt(dev, buf, len); + + if (WARN_ON(len < 2)) + return; + + if (ieee80211_is_auth(mgmt->frame_control)) { + nl80211_send_rx_auth(rdev, dev, buf, len, GFP_KERNEL); + cfg80211_sme_rx_auth(dev, buf, len); + } else if (ieee80211_is_deauth(mgmt->frame_control)) { + cfg80211_process_deauth(dev, buf, len); + } else if (ieee80211_is_disassoc(mgmt->frame_control)) { + cfg80211_process_disassoc(dev, buf, len); + } +} +EXPORT_SYMBOL(cfg80211_rx_mlme_mgmt); + +void cfg80211_auth_timeout(struct net_device *dev, const u8 *addr) { struct wireless_dev *wdev = dev->ieee80211_ptr; struct wiphy *wiphy = wdev->wiphy; @@ -175,9 +178,9 @@ void cfg80211_send_auth_timeout(struct net_device *dev, const u8 *addr) WLAN_STATUS_UNSPECIFIED_FAILURE, false, NULL); } -EXPORT_SYMBOL(cfg80211_send_auth_timeout); +EXPORT_SYMBOL(cfg80211_auth_timeout); -void cfg80211_send_assoc_timeout(struct net_device *dev, const u8 *addr) +void cfg80211_assoc_timeout(struct net_device *dev, const u8 *addr) { struct wireless_dev *wdev = dev->ieee80211_ptr; struct wiphy *wiphy = wdev->wiphy; @@ -191,7 +194,26 @@ void cfg80211_send_assoc_timeout(struct net_device *dev, const u8 *addr) WLAN_STATUS_UNSPECIFIED_FAILURE, false, NULL); } -EXPORT_SYMBOL(cfg80211_send_assoc_timeout); +EXPORT_SYMBOL(cfg80211_assoc_timeout); + +void cfg80211_tx_mlme_mgmt(struct net_device *dev, const u8 *buf, size_t len) +{ + struct wireless_dev *wdev = dev->ieee80211_ptr; + struct ieee80211_mgmt *mgmt = (void *)buf; + + ASSERT_WDEV_LOCK(wdev); + + trace_cfg80211_tx_mlme_mgmt(dev, buf, len); + + if (WARN_ON(len < 2)) + return; + + if (ieee80211_is_deauth(mgmt->frame_control)) + cfg80211_process_deauth(dev, buf, len); + else + cfg80211_process_disassoc(dev, buf, len); +} +EXPORT_SYMBOL(cfg80211_tx_mlme_mgmt); void cfg80211_michael_mic_failure(struct net_device *dev, const u8 *addr, enum nl80211_key_type key_type, int key_id, diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index ce949e38178c..444f5effb77f 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -9313,31 +9313,27 @@ void nl80211_send_disassoc(struct cfg80211_registered_device *rdev, NL80211_CMD_DISASSOCIATE, gfp); } -void cfg80211_send_unprot_deauth(struct net_device *dev, const u8 *buf, - size_t len) +void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf, + size_t len) { struct wireless_dev *wdev = dev->ieee80211_ptr; struct wiphy *wiphy = wdev->wiphy; struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); + const struct ieee80211_mgmt *mgmt = (void *)buf; + u32 cmd; - trace_cfg80211_send_unprot_deauth(dev); - nl80211_send_mlme_event(rdev, dev, buf, len, - NL80211_CMD_UNPROT_DEAUTHENTICATE, GFP_ATOMIC); -} -EXPORT_SYMBOL(cfg80211_send_unprot_deauth); + if (WARN_ON(len < 2)) + return; -void cfg80211_send_unprot_disassoc(struct net_device *dev, const u8 *buf, - size_t len) -{ - struct wireless_dev *wdev = dev->ieee80211_ptr; - struct wiphy *wiphy = wdev->wiphy; - struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); + if (ieee80211_is_deauth(mgmt->frame_control)) + cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE; + else + cmd = NL80211_CMD_UNPROT_DISASSOCIATE; - trace_cfg80211_send_unprot_disassoc(dev); - nl80211_send_mlme_event(rdev, dev, buf, len, - NL80211_CMD_UNPROT_DISASSOCIATE, GFP_ATOMIC); + trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len); + nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC); } -EXPORT_SYMBOL(cfg80211_send_unprot_disassoc); +EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt); static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev, struct net_device *netdev, int cmd, diff --git a/net/wireless/trace.h b/net/wireless/trace.h index 23fafeae8a10..e1534baf2ebb 100644 --- a/net/wireless/trace.h +++ b/net/wireless/trace.h @@ -1911,24 +1911,46 @@ TRACE_EVENT(cfg80211_send_rx_assoc, NETDEV_PR_ARG, MAC_PR_ARG(bssid), CHAN_PR_ARG) ); -DEFINE_EVENT(netdev_evt_only, cfg80211_send_deauth, - TP_PROTO(struct net_device *netdev), - TP_ARGS(netdev) +DECLARE_EVENT_CLASS(netdev_frame_event, + TP_PROTO(struct net_device *netdev, const u8 *buf, int len), + TP_ARGS(netdev, buf, len), + TP_STRUCT__entry( + NETDEV_ENTRY + __dynamic_array(u8, frame, len) + ), + TP_fast_assign( + NETDEV_ASSIGN; + memcpy(__get_dynamic_array(frame), buf, len); + ), + TP_printk(NETDEV_PR_FMT ", ftype:0x%.2x", + NETDEV_PR_ARG, + le16_to_cpup((__le16 *)__get_dynamic_array(frame))) ); -DEFINE_EVENT(netdev_evt_only, cfg80211_send_disassoc, - TP_PROTO(struct net_device *netdev), - TP_ARGS(netdev) +DEFINE_EVENT(netdev_frame_event, cfg80211_rx_unprot_mlme_mgmt, + TP_PROTO(struct net_device *netdev, const u8 *buf, int len), + TP_ARGS(netdev, buf, len) ); -DEFINE_EVENT(netdev_evt_only, cfg80211_send_unprot_deauth, - TP_PROTO(struct net_device *netdev), - TP_ARGS(netdev) +DEFINE_EVENT(netdev_frame_event, cfg80211_rx_mlme_mgmt, + TP_PROTO(struct net_device *netdev, const u8 *buf, int len), + TP_ARGS(netdev, buf, len) ); -DEFINE_EVENT(netdev_evt_only, cfg80211_send_unprot_disassoc, - TP_PROTO(struct net_device *netdev), - TP_ARGS(netdev) +TRACE_EVENT(cfg80211_tx_mlme_mgmt, + TP_PROTO(struct net_device *netdev, const u8 *buf, int len), + TP_ARGS(netdev, buf, len), + TP_STRUCT__entry( + NETDEV_ENTRY + __dynamic_array(u8, frame, len) + ), + TP_fast_assign( + NETDEV_ASSIGN; + memcpy(__get_dynamic_array(frame), buf, len); + ), + TP_printk(NETDEV_PR_FMT ", ftype:0x%.2x", + NETDEV_PR_ARG, + le16_to_cpup((__le16 *)__get_dynamic_array(frame))) ); DECLARE_EVENT_CLASS(netdev_mac_evt, -- cgit v1.2.3 From ceca7b7121795ef81bd598a240d53a925662d0c1 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Thu, 16 May 2013 00:55:45 +0200 Subject: cfg80211: separate internal SME implementation The current internal SME implementation in cfg80211 is very mixed up with the MLME handling, which has been causing issues for a long time. There are three things that the implementation has to provide: * a basic SME implementation for nl80211's connect() call (for drivers implementing auth/assoc, which is really just mac80211) and wireless extensions * MLME events for the userspace SME * SME events (connected, disconnected etc.) for all different SME implementation possibilities (driver, cfg80211 and userspace) To achieve these goals it isn't necessary to track the software SME's connection status outside of it's state (which is the part that caused many issues.) Instead, track it only in the SME data (wdev->conn) and in the general case only track whether the wdev is connected or not (via wdev->current_bss.) Also separate the internal implementation to not have callbacks from the SME events, but rather call it from the API functions that the driver (or rather mac80211) calls. This separates the code better. Signed-off-by: Johannes Berg --- include/net/cfg80211.h | 5 - net/wireless/core.c | 1 - net/wireless/core.h | 30 +-- net/wireless/ibss.c | 6 - net/wireless/mlme.c | 191 ++++++----------- net/wireless/nl80211.c | 5 +- net/wireless/sme.c | 542 +++++++++++++++++++++++------------------------- net/wireless/wext-sme.c | 8 +- 8 files changed, 335 insertions(+), 453 deletions(-) (limited to 'net/wireless') diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h index 195330d4ef34..5b208064f1bd 100644 --- a/include/net/cfg80211.h +++ b/include/net/cfg80211.h @@ -2898,11 +2898,6 @@ struct wireless_dev { /* currently used for IBSS and SME - might be rearranged later */ u8 ssid[IEEE80211_MAX_SSID_LEN]; u8 ssid_len, mesh_id_len, mesh_id_up_len; - enum { - CFG80211_SME_IDLE, - CFG80211_SME_CONNECTING, - CFG80211_SME_CONNECTED, - } sme_state; struct cfg80211_conn *conn; struct cfg80211_cached_keys *connect_keys; diff --git a/net/wireless/core.c b/net/wireless/core.c index f553b9484c1e..221e76b53a97 100644 --- a/net/wireless/core.c +++ b/net/wireless/core.c @@ -821,7 +821,6 @@ static int cfg80211_netdev_notifier_call(struct notifier_block *nb, pr_err("failed to add phy80211 symlink to netdev!\n"); } wdev->netdev = dev; - wdev->sme_state = CFG80211_SME_IDLE; #ifdef CONFIG_CFG80211_WEXT wdev->wext.default_key = -1; wdev->wext.default_mgmt_key = -1; diff --git a/net/wireless/core.h b/net/wireless/core.h index a65eaf8a84c1..a6b45bf00f33 100644 --- a/net/wireless/core.h +++ b/net/wireless/core.h @@ -308,11 +308,6 @@ int cfg80211_mlme_disassoc(struct cfg80211_registered_device *rdev, bool local_state_change); void cfg80211_mlme_down(struct cfg80211_registered_device *rdev, struct net_device *dev); -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, bool wextev, - struct cfg80211_bss *bss); int cfg80211_mlme_register_mgmt(struct wireless_dev *wdev, u32 snd_pid, u16 frame_type, const u8 *match_data, int match_len); @@ -328,12 +323,19 @@ void cfg80211_oper_and_ht_capa(struct ieee80211_ht_cap *ht_capa, void cfg80211_oper_and_vht_capa(struct ieee80211_vht_cap *vht_capa, const struct ieee80211_vht_cap *vht_capa_mask); -/* SME */ +/* SME events */ int cfg80211_connect(struct cfg80211_registered_device *rdev, struct net_device *dev, struct cfg80211_connect_params *connect, struct cfg80211_cached_keys *connkeys, const u8 *prev_bssid); +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, bool wextev, + struct cfg80211_bss *bss); +void __cfg80211_disconnected(struct net_device *dev, const u8 *ie, + size_t ie_len, u16 reason, bool from_ap); int cfg80211_disconnect(struct cfg80211_registered_device *rdev, struct net_device *dev, u16 reason, bool wextev); @@ -344,21 +346,21 @@ void __cfg80211_roamed(struct wireless_dev *wdev, int cfg80211_mgd_wext_connect(struct cfg80211_registered_device *rdev, struct wireless_dev *wdev); +/* SME implementation */ void cfg80211_conn_work(struct work_struct *work); -void cfg80211_sme_failed_assoc(struct wireless_dev *wdev); -bool cfg80211_sme_failed_reassoc(struct wireless_dev *wdev); +void cfg80211_sme_scan_done(struct net_device *dev); +bool cfg80211_sme_rx_assoc_resp(struct wireless_dev *wdev, u16 status); +void cfg80211_sme_rx_auth(struct wireless_dev *wdev, const u8 *buf, size_t len); +void cfg80211_sme_disassoc(struct wireless_dev *wdev); +void cfg80211_sme_deauth(struct wireless_dev *wdev); +void cfg80211_sme_auth_timeout(struct wireless_dev *wdev); +void cfg80211_sme_assoc_timeout(struct wireless_dev *wdev); /* internal helpers */ bool cfg80211_supported_cipher_suite(struct wiphy *wiphy, u32 cipher); int cfg80211_validate_key_settings(struct cfg80211_registered_device *rdev, struct key_params *params, int key_idx, bool pairwise, const u8 *mac_addr); -void __cfg80211_disconnected(struct net_device *dev, const u8 *ie, - size_t ie_len, u16 reason, bool from_ap); -void cfg80211_sme_scan_done(struct net_device *dev); -void cfg80211_sme_rx_auth(struct net_device *dev, const u8 *buf, size_t len); -void cfg80211_sme_disassoc(struct net_device *dev, - struct cfg80211_internal_bss *bss); void __cfg80211_scan_done(struct work_struct *wk); void ___cfg80211_scan_done(struct cfg80211_registered_device *rdev, bool leak); void __cfg80211_sched_scan_results(struct work_struct *wk); diff --git a/net/wireless/ibss.c b/net/wireless/ibss.c index 5449c5a6de84..39bff7d36768 100644 --- a/net/wireless/ibss.c +++ b/net/wireless/ibss.c @@ -43,7 +43,6 @@ void __cfg80211_ibss_joined(struct net_device *dev, const u8 *bssid) cfg80211_hold_bss(bss_from_pub(bss)); wdev->current_bss = bss_from_pub(bss); - wdev->sme_state = CFG80211_SME_CONNECTED; cfg80211_upload_connect_keys(wdev); nl80211_send_ibss_bssid(wiphy_to_dev(wdev->wiphy), dev, bssid, @@ -64,8 +63,6 @@ void cfg80211_ibss_joined(struct net_device *dev, const u8 *bssid, gfp_t gfp) trace_cfg80211_ibss_joined(dev, bssid); - CFG80211_DEV_WARN_ON(wdev->sme_state != CFG80211_SME_CONNECTING); - ev = kzalloc(sizeof(*ev), gfp); if (!ev) return; @@ -120,7 +117,6 @@ int __cfg80211_join_ibss(struct cfg80211_registered_device *rdev, #ifdef CONFIG_CFG80211_WEXT wdev->wext.ibss.chandef = params->chandef; #endif - wdev->sme_state = CFG80211_SME_CONNECTING; err = cfg80211_can_use_chan(rdev, wdev, params->chandef.chan, params->channel_fixed @@ -134,7 +130,6 @@ int __cfg80211_join_ibss(struct cfg80211_registered_device *rdev, err = rdev_join_ibss(rdev, dev, params); if (err) { wdev->connect_keys = NULL; - wdev->sme_state = CFG80211_SME_IDLE; return err; } @@ -186,7 +181,6 @@ static void __cfg80211_clear_ibss(struct net_device *dev, bool nowext) } wdev->current_bss = NULL; - wdev->sme_state = CFG80211_SME_IDLE; wdev->ssid_len = 0; #ifdef CONFIG_CFG80211_WEXT if (!nowext) diff --git a/net/wireless/mlme.c b/net/wireless/mlme.c index 4b9c2be0d56d..a61a44bc6cf0 100644 --- a/net/wireless/mlme.c +++ b/net/wireless/mlme.c @@ -21,129 +21,85 @@ void cfg80211_rx_assoc_resp(struct net_device *dev, struct cfg80211_bss *bss, const u8 *buf, size_t len) { - u16 status_code; struct wireless_dev *wdev = dev->ieee80211_ptr; struct wiphy *wiphy = wdev->wiphy; struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf; u8 *ie = mgmt->u.assoc_resp.variable; int ieoffs = offsetof(struct ieee80211_mgmt, u.assoc_resp.variable); + u16 status_code = le16_to_cpu(mgmt->u.assoc_resp.status_code); trace_cfg80211_send_rx_assoc(dev, bss); - status_code = le16_to_cpu(mgmt->u.assoc_resp.status_code); - /* * This is a bit of a hack, we don't notify userspace of * a (re-)association reply if we tried to send a reassoc * and got a reject -- we only try again with an assoc * frame instead of reassoc. */ - if (status_code != WLAN_STATUS_SUCCESS && wdev->conn && - cfg80211_sme_failed_reassoc(wdev)) { + if (cfg80211_sme_rx_assoc_resp(wdev, status_code)) { cfg80211_put_bss(wiphy, bss); return; } nl80211_send_rx_assoc(rdev, dev, buf, len, GFP_KERNEL); - - if (status_code != WLAN_STATUS_SUCCESS && wdev->conn) { - cfg80211_sme_failed_assoc(wdev); - /* - * do not call connect_result() now because the - * sme will schedule work that does it later. - */ - cfg80211_put_bss(wiphy, bss); - return; - } - - if (!wdev->conn && wdev->sme_state == CFG80211_SME_IDLE) { - /* - * This is for the userspace SME, the CONNECTING - * state will be changed to CONNECTED by - * __cfg80211_connect_result() below. - */ - wdev->sme_state = CFG80211_SME_CONNECTING; - } - - /* this consumes the bss reference */ + /* update current_bss etc., consumes the bss reference */ __cfg80211_connect_result(dev, mgmt->bssid, NULL, 0, ie, len - ieoffs, status_code, status_code == WLAN_STATUS_SUCCESS, bss); } EXPORT_SYMBOL(cfg80211_rx_assoc_resp); -static void cfg80211_process_deauth(struct net_device *dev, +static void cfg80211_process_auth(struct wireless_dev *wdev, + const u8 *buf, size_t len) +{ + struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); + + nl80211_send_rx_auth(rdev, wdev->netdev, buf, len, GFP_KERNEL); + cfg80211_sme_rx_auth(wdev, buf, len); +} + +static void cfg80211_process_deauth(struct wireless_dev *wdev, const u8 *buf, size_t len) { - struct wireless_dev *wdev = dev->ieee80211_ptr; - struct wiphy *wiphy = wdev->wiphy; - struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); + struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf; const u8 *bssid = mgmt->bssid; - bool was_current = false; - - if (wdev->current_bss && - ether_addr_equal(wdev->current_bss->pub.bssid, bssid)) { - cfg80211_unhold_bss(wdev->current_bss); - cfg80211_put_bss(wiphy, &wdev->current_bss->pub); - wdev->current_bss = NULL; - was_current = true; - } + u16 reason_code = le16_to_cpu(mgmt->u.deauth.reason_code); + bool from_ap = !ether_addr_equal(mgmt->sa, wdev->netdev->dev_addr); - nl80211_send_deauth(rdev, dev, buf, len, GFP_KERNEL); + nl80211_send_deauth(rdev, wdev->netdev, buf, len, GFP_KERNEL); - if (wdev->sme_state == CFG80211_SME_CONNECTED && was_current) { - u16 reason_code; - bool from_ap; - - reason_code = le16_to_cpu(mgmt->u.deauth.reason_code); + if (!wdev->current_bss || + !ether_addr_equal(wdev->current_bss->pub.bssid, bssid)) + return; - from_ap = !ether_addr_equal(mgmt->sa, dev->dev_addr); - __cfg80211_disconnected(dev, NULL, 0, reason_code, from_ap); - } else if (wdev->sme_state == CFG80211_SME_CONNECTING) { - __cfg80211_connect_result(dev, mgmt->bssid, NULL, 0, NULL, 0, - WLAN_STATUS_UNSPECIFIED_FAILURE, - false, NULL); - } + __cfg80211_disconnected(wdev->netdev, NULL, 0, reason_code, from_ap); + cfg80211_sme_deauth(wdev); } -static void cfg80211_process_disassoc(struct net_device *dev, +static void cfg80211_process_disassoc(struct wireless_dev *wdev, const u8 *buf, size_t len) { - struct wireless_dev *wdev = dev->ieee80211_ptr; - struct wiphy *wiphy = wdev->wiphy; - struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); + struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf; const u8 *bssid = mgmt->bssid; - u16 reason_code; - bool from_ap; + u16 reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code); + bool from_ap = !ether_addr_equal(mgmt->sa, wdev->netdev->dev_addr); - nl80211_send_disassoc(rdev, dev, buf, len, GFP_KERNEL); + nl80211_send_disassoc(rdev, wdev->netdev, buf, len, GFP_KERNEL); - if (wdev->sme_state != CFG80211_SME_CONNECTED) + if (WARN_ON(!wdev->current_bss || + !ether_addr_equal(wdev->current_bss->pub.bssid, bssid))) return; - if (wdev->current_bss && - ether_addr_equal(wdev->current_bss->pub.bssid, bssid)) { - cfg80211_sme_disassoc(dev, wdev->current_bss); - cfg80211_unhold_bss(wdev->current_bss); - cfg80211_put_bss(wiphy, &wdev->current_bss->pub); - wdev->current_bss = NULL; - } else - WARN_ON(1); - - reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code); - - from_ap = !ether_addr_equal(mgmt->sa, dev->dev_addr); - __cfg80211_disconnected(dev, NULL, 0, reason_code, from_ap); + __cfg80211_disconnected(wdev->netdev, NULL, 0, reason_code, from_ap); + cfg80211_sme_disassoc(wdev); } void cfg80211_rx_mlme_mgmt(struct net_device *dev, const u8 *buf, size_t len) { struct wireless_dev *wdev = dev->ieee80211_ptr; - struct wiphy *wiphy = wdev->wiphy; - struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); struct ieee80211_mgmt *mgmt = (void *)buf; ASSERT_WDEV_LOCK(wdev); @@ -153,14 +109,12 @@ void cfg80211_rx_mlme_mgmt(struct net_device *dev, const u8 *buf, size_t len) if (WARN_ON(len < 2)) return; - if (ieee80211_is_auth(mgmt->frame_control)) { - nl80211_send_rx_auth(rdev, dev, buf, len, GFP_KERNEL); - cfg80211_sme_rx_auth(dev, buf, len); - } else if (ieee80211_is_deauth(mgmt->frame_control)) { - cfg80211_process_deauth(dev, buf, len); - } else if (ieee80211_is_disassoc(mgmt->frame_control)) { - cfg80211_process_disassoc(dev, buf, len); - } + if (ieee80211_is_auth(mgmt->frame_control)) + cfg80211_process_auth(wdev, buf, len); + else if (ieee80211_is_deauth(mgmt->frame_control)) + cfg80211_process_deauth(wdev, buf, len); + else if (ieee80211_is_disassoc(mgmt->frame_control)) + cfg80211_process_disassoc(wdev, buf, len); } EXPORT_SYMBOL(cfg80211_rx_mlme_mgmt); @@ -173,10 +127,7 @@ void cfg80211_auth_timeout(struct net_device *dev, const u8 *addr) trace_cfg80211_send_auth_timeout(dev, addr); nl80211_send_auth_timeout(rdev, dev, addr, GFP_KERNEL); - if (wdev->sme_state == CFG80211_SME_CONNECTING) - __cfg80211_connect_result(dev, addr, NULL, 0, NULL, 0, - WLAN_STATUS_UNSPECIFIED_FAILURE, - false, NULL); + cfg80211_sme_auth_timeout(wdev); } EXPORT_SYMBOL(cfg80211_auth_timeout); @@ -189,10 +140,7 @@ void cfg80211_assoc_timeout(struct net_device *dev, const u8 *addr) trace_cfg80211_send_assoc_timeout(dev, addr); nl80211_send_assoc_timeout(rdev, dev, addr, GFP_KERNEL); - if (wdev->sme_state == CFG80211_SME_CONNECTING) - __cfg80211_connect_result(dev, addr, NULL, 0, NULL, 0, - WLAN_STATUS_UNSPECIFIED_FAILURE, - false, NULL); + cfg80211_sme_assoc_timeout(wdev); } EXPORT_SYMBOL(cfg80211_assoc_timeout); @@ -209,9 +157,9 @@ void cfg80211_tx_mlme_mgmt(struct net_device *dev, const u8 *buf, size_t len) return; if (ieee80211_is_deauth(mgmt->frame_control)) - cfg80211_process_deauth(dev, buf, len); + cfg80211_process_deauth(wdev, buf, len); else - cfg80211_process_disassoc(dev, buf, len); + cfg80211_process_disassoc(wdev, buf, len); } EXPORT_SYMBOL(cfg80211_tx_mlme_mgmt); @@ -336,21 +284,12 @@ int cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev, { struct wireless_dev *wdev = dev->ieee80211_ptr; int err; - bool was_connected = false; ASSERT_WDEV_LOCK(wdev); - if (wdev->current_bss && req->prev_bssid && - ether_addr_equal(wdev->current_bss->pub.bssid, req->prev_bssid)) { - /* - * Trying to reassociate: Allow this to proceed and let the old - * association to be dropped when the new one is completed. - */ - if (wdev->sme_state == CFG80211_SME_CONNECTED) { - was_connected = true; - wdev->sme_state = CFG80211_SME_CONNECTING; - } - } else if (wdev->current_bss) + if (wdev->current_bss && + (!req->prev_bssid || !ether_addr_equal(wdev->current_bss->pub.bssid, + req->prev_bssid))) return -EALREADY; cfg80211_oper_and_ht_capa(&req->ht_capa_mask, @@ -360,11 +299,8 @@ int cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev, req->bss = cfg80211_get_bss(&rdev->wiphy, chan, bssid, ssid, ssid_len, WLAN_CAPABILITY_ESS, WLAN_CAPABILITY_ESS); - if (!req->bss) { - if (was_connected) - wdev->sme_state = CFG80211_SME_CONNECTED; + if (!req->bss) return -ENOENT; - } err = cfg80211_can_use_chan(rdev, wdev, chan, CHAN_MODE_SHARED); if (err) @@ -373,11 +309,8 @@ int cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev, err = rdev_assoc(rdev, dev, req); out: - if (err) { - if (was_connected) - wdev->sme_state = CFG80211_SME_CONNECTED; + if (err) cfg80211_put_bss(&rdev->wiphy, req->bss); - } return err; } @@ -398,8 +331,9 @@ int cfg80211_mlme_deauth(struct cfg80211_registered_device *rdev, ASSERT_WDEV_LOCK(wdev); - if (local_state_change && (!wdev->current_bss || - !ether_addr_equal(wdev->current_bss->pub.bssid, bssid))) + if (local_state_change && + (!wdev->current_bss || + !ether_addr_equal(wdev->current_bss->pub.bssid, bssid))) return 0; return rdev_deauth(rdev, dev, &req); @@ -417,13 +351,11 @@ int cfg80211_mlme_disassoc(struct cfg80211_registered_device *rdev, .ie = ie, .ie_len = ie_len, }; + int err; ASSERT_WDEV_LOCK(wdev); - if (wdev->sme_state != CFG80211_SME_CONNECTED) - return -ENOTCONN; - - if (WARN(!wdev->current_bss, "sme_state=%d\n", wdev->sme_state)) + if (!wdev->current_bss) return -ENOTCONN; if (ether_addr_equal(wdev->current_bss->pub.bssid, bssid)) @@ -431,7 +363,13 @@ int cfg80211_mlme_disassoc(struct cfg80211_registered_device *rdev, else return -ENOTCONN; - return rdev_disassoc(rdev, dev, &req); + err = rdev_disassoc(rdev, dev, &req); + if (err) + return err; + + /* driver should have reported the disassoc */ + WARN_ON(wdev->current_bss); + return 0; } void cfg80211_mlme_down(struct cfg80211_registered_device *rdev, @@ -439,10 +377,6 @@ void cfg80211_mlme_down(struct cfg80211_registered_device *rdev, { struct wireless_dev *wdev = dev->ieee80211_ptr; u8 bssid[ETH_ALEN]; - struct cfg80211_deauth_request req = { - .reason_code = WLAN_REASON_DEAUTH_LEAVING, - .bssid = bssid, - }; ASSERT_WDEV_LOCK(wdev); @@ -453,13 +387,8 @@ void cfg80211_mlme_down(struct cfg80211_registered_device *rdev, return; memcpy(bssid, wdev->current_bss->pub.bssid, ETH_ALEN); - rdev_deauth(rdev, dev, &req); - - if (wdev->current_bss) { - cfg80211_unhold_bss(wdev->current_bss); - cfg80211_put_bss(&rdev->wiphy, &wdev->current_bss->pub); - wdev->current_bss = NULL; - } + cfg80211_mlme_deauth(rdev, dev, bssid, NULL, 0, + WLAN_REASON_DEAUTH_LEAVING, false); } struct cfg80211_mgmt_registration { diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index 444f5effb77f..88e820b73674 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -800,12 +800,9 @@ static int nl80211_key_allowed(struct wireless_dev *wdev) case NL80211_IFTYPE_MESH_POINT: break; case NL80211_IFTYPE_ADHOC: - if (!wdev->current_bss) - return -ENOLINK; - break; case NL80211_IFTYPE_STATION: case NL80211_IFTYPE_P2P_CLIENT: - if (wdev->sme_state != CFG80211_SME_CONNECTED) + if (!wdev->current_bss) return -ENOLINK; break; default: diff --git a/net/wireless/sme.c b/net/wireless/sme.c index 81be95f3be74..ae7e2cbf45cb 100644 --- a/net/wireless/sme.c +++ b/net/wireless/sme.c @@ -1,5 +1,7 @@ /* - * SME code for cfg80211's connect emulation. + * SME code for cfg80211 + * both driver SME event handling and the SME implementation + * (for nl80211's connect() and wext) * * Copyright 2009 Johannes Berg * Copyright (C) 2009 Intel Corporation. All rights reserved. @@ -18,18 +20,24 @@ #include "reg.h" #include "rdev-ops.h" +/* + * Software SME in cfg80211, using auth/assoc/deauth calls to the + * driver. This is is for implementing nl80211's connect/disconnect + * and wireless extensions (if configured.) + */ + struct cfg80211_conn { struct cfg80211_connect_params params; /* these are sub-states of the _CONNECTING sme_state */ enum { - CFG80211_CONN_IDLE, CFG80211_CONN_SCANNING, CFG80211_CONN_SCAN_AGAIN, CFG80211_CONN_AUTHENTICATE_NEXT, CFG80211_CONN_AUTHENTICATING, CFG80211_CONN_ASSOCIATE_NEXT, CFG80211_CONN_ASSOCIATING, - CFG80211_CONN_DEAUTH_ASSOC_FAIL, + CFG80211_CONN_DEAUTH, + CFG80211_CONN_CONNECTED, } state; u8 bssid[ETH_ALEN], prev_bssid[ETH_ALEN]; u8 *ie; @@ -37,39 +45,16 @@ struct cfg80211_conn { bool auto_auth, prev_bssid_valid; }; -static bool cfg80211_is_all_idle(void) +static void cfg80211_sme_free(struct wireless_dev *wdev) { - struct cfg80211_registered_device *rdev; - struct wireless_dev *wdev; - bool is_all_idle = true; - - /* - * All devices must be idle as otherwise if you are actively - * scanning some new beacon hints could be learned and would - * count as new regulatory hints. - */ - list_for_each_entry(rdev, &cfg80211_rdev_list, list) { - list_for_each_entry(wdev, &rdev->wdev_list, list) { - wdev_lock(wdev); - if (wdev->sme_state != CFG80211_SME_IDLE) - is_all_idle = false; - wdev_unlock(wdev); - } - } - - return is_all_idle; -} + if (!wdev->conn) + return; -static void disconnect_work(struct work_struct *work) -{ - rtnl_lock(); - if (cfg80211_is_all_idle()) - regulatory_hint_disconnect(); - rtnl_unlock(); + kfree(wdev->conn->ie); + kfree(wdev->conn); + wdev->conn = NULL; } -static DECLARE_WORK(cfg80211_disconnect_work, disconnect_work); - static int cfg80211_conn_scan(struct wireless_dev *wdev) { struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); @@ -164,6 +149,9 @@ static int cfg80211_conn_do_work(struct wireless_dev *wdev) params = &wdev->conn->params; switch (wdev->conn->state) { + case CFG80211_CONN_SCANNING: + /* didn't find it during scan ... */ + return -ENOENT; case CFG80211_CONN_SCAN_AGAIN: return cfg80211_conn_scan(wdev); case CFG80211_CONN_AUTHENTICATE_NEXT: @@ -200,12 +188,11 @@ static int cfg80211_conn_do_work(struct wireless_dev *wdev) WLAN_REASON_DEAUTH_LEAVING, false); return err; - case CFG80211_CONN_DEAUTH_ASSOC_FAIL: + case CFG80211_CONN_DEAUTH: cfg80211_mlme_deauth(rdev, wdev->netdev, params->bssid, NULL, 0, WLAN_REASON_DEAUTH_LEAVING, false); - /* return an error so that we call __cfg80211_connect_result() */ - return -EINVAL; + return 0; default: return 0; } @@ -229,7 +216,8 @@ void cfg80211_conn_work(struct work_struct *work) wdev_unlock(wdev); continue; } - if (wdev->sme_state != CFG80211_SME_CONNECTING || !wdev->conn) { + if (!wdev->conn || + wdev->conn->state == CFG80211_CONN_CONNECTED) { wdev_unlock(wdev); continue; } @@ -237,12 +225,14 @@ void cfg80211_conn_work(struct work_struct *work) memcpy(bssid_buf, wdev->conn->params.bssid, ETH_ALEN); bssid = bssid_buf; } - if (cfg80211_conn_do_work(wdev)) + if (cfg80211_conn_do_work(wdev)) { __cfg80211_connect_result( wdev->netdev, bssid, NULL, 0, NULL, 0, WLAN_STATUS_UNSPECIFIED_FAILURE, false, NULL); + cfg80211_sme_free(wdev); + } wdev_unlock(wdev); } @@ -286,9 +276,6 @@ static void __cfg80211_sme_scan_done(struct net_device *dev) ASSERT_WDEV_LOCK(wdev); - if (wdev->sme_state != CFG80211_SME_CONNECTING) - return; - if (!wdev->conn) return; @@ -297,20 +284,10 @@ static void __cfg80211_sme_scan_done(struct net_device *dev) return; bss = cfg80211_get_conn_bss(wdev); - if (bss) { + if (bss) cfg80211_put_bss(&rdev->wiphy, bss); - } else { - /* not found */ - if (wdev->conn->state == CFG80211_CONN_SCAN_AGAIN) - schedule_work(&rdev->conn_work); - else - __cfg80211_connect_result( - wdev->netdev, - wdev->conn->params.bssid, - NULL, 0, NULL, 0, - WLAN_STATUS_UNSPECIFIED_FAILURE, - false, NULL); - } + else + schedule_work(&rdev->conn_work); } void cfg80211_sme_scan_done(struct net_device *dev) @@ -322,10 +299,8 @@ void cfg80211_sme_scan_done(struct net_device *dev) wdev_unlock(wdev); } -void cfg80211_sme_rx_auth(struct net_device *dev, - const u8 *buf, size_t len) +void cfg80211_sme_rx_auth(struct wireless_dev *wdev, const u8 *buf, size_t len) { - struct wireless_dev *wdev = dev->ieee80211_ptr; struct wiphy *wiphy = wdev->wiphy; struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf; @@ -333,11 +308,7 @@ void cfg80211_sme_rx_auth(struct net_device *dev, ASSERT_WDEV_LOCK(wdev); - /* should only RX auth frames when connecting */ - if (wdev->sme_state != CFG80211_SME_CONNECTING) - return; - - if (WARN_ON(!wdev->conn)) + if (!wdev->conn || wdev->conn->state == CFG80211_CONN_CONNECTED) return; if (status_code == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG && @@ -366,46 +337,226 @@ void cfg80211_sme_rx_auth(struct net_device *dev, wdev->conn->state = CFG80211_CONN_AUTHENTICATE_NEXT; schedule_work(&rdev->conn_work); } else if (status_code != WLAN_STATUS_SUCCESS) { - __cfg80211_connect_result(dev, mgmt->bssid, NULL, 0, NULL, 0, + __cfg80211_connect_result(wdev->netdev, mgmt->bssid, + NULL, 0, NULL, 0, status_code, false, NULL); - } else if (wdev->sme_state == CFG80211_SME_CONNECTING && - wdev->conn->state == CFG80211_CONN_AUTHENTICATING) { + } else if (wdev->conn->state == CFG80211_CONN_AUTHENTICATING) { wdev->conn->state = CFG80211_CONN_ASSOCIATE_NEXT; schedule_work(&rdev->conn_work); } } -bool cfg80211_sme_failed_reassoc(struct wireless_dev *wdev) +bool cfg80211_sme_rx_assoc_resp(struct wireless_dev *wdev, u16 status) { - struct wiphy *wiphy = wdev->wiphy; - struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); + struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); - if (WARN_ON(!wdev->conn)) + if (!wdev->conn) return false; - if (!wdev->conn->prev_bssid_valid) + if (status == WLAN_STATUS_SUCCESS) { + wdev->conn->state = CFG80211_CONN_CONNECTED; return false; + } - /* - * Some stupid APs don't accept reassoc, so we - * need to fall back to trying regular assoc. - */ - wdev->conn->prev_bssid_valid = false; - wdev->conn->state = CFG80211_CONN_ASSOCIATE_NEXT; + if (wdev->conn->prev_bssid_valid) { + /* + * Some stupid APs don't accept reassoc, so we + * need to fall back to trying regular assoc; + * return true so no event is sent to userspace. + */ + wdev->conn->prev_bssid_valid = false; + wdev->conn->state = CFG80211_CONN_ASSOCIATE_NEXT; + schedule_work(&rdev->conn_work); + return true; + } + + wdev->conn->state = CFG80211_CONN_DEAUTH; schedule_work(&rdev->conn_work); + return false; +} - return true; +void cfg80211_sme_deauth(struct wireless_dev *wdev) +{ + cfg80211_sme_free(wdev); } -void cfg80211_sme_failed_assoc(struct wireless_dev *wdev) +void cfg80211_sme_auth_timeout(struct wireless_dev *wdev) { - struct wiphy *wiphy = wdev->wiphy; - struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); + cfg80211_sme_free(wdev); +} - wdev->conn->state = CFG80211_CONN_DEAUTH_ASSOC_FAIL; +void cfg80211_sme_disassoc(struct wireless_dev *wdev) +{ + struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); + + if (!wdev->conn) + return; + + wdev->conn->state = CFG80211_CONN_DEAUTH; schedule_work(&rdev->conn_work); } +void cfg80211_sme_assoc_timeout(struct wireless_dev *wdev) +{ + cfg80211_sme_disassoc(wdev); +} + +static int cfg80211_sme_connect(struct wireless_dev *wdev, + struct cfg80211_connect_params *connect, + const u8 *prev_bssid) +{ + struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); + struct cfg80211_bss *bss; + int err; + + if (!rdev->ops->auth || !rdev->ops->assoc) + return -EOPNOTSUPP; + + if (wdev->current_bss) + return -EALREADY; + + if (WARN_ON(wdev->conn)) + return -EINPROGRESS; + + wdev->conn = kzalloc(sizeof(*wdev->conn), GFP_KERNEL); + if (!wdev->conn) + return -ENOMEM; + + /* + * Copy all parameters, and treat explicitly IEs, BSSID, SSID. + */ + memcpy(&wdev->conn->params, connect, sizeof(*connect)); + if (connect->bssid) { + wdev->conn->params.bssid = wdev->conn->bssid; + memcpy(wdev->conn->bssid, connect->bssid, ETH_ALEN); + } + + if (connect->ie) { + wdev->conn->ie = kmemdup(connect->ie, connect->ie_len, + GFP_KERNEL); + wdev->conn->params.ie = wdev->conn->ie; + if (!wdev->conn->ie) { + kfree(wdev->conn); + wdev->conn = NULL; + return -ENOMEM; + } + } + + if (connect->auth_type == NL80211_AUTHTYPE_AUTOMATIC) { + wdev->conn->auto_auth = true; + /* start with open system ... should mostly work */ + wdev->conn->params.auth_type = + NL80211_AUTHTYPE_OPEN_SYSTEM; + } else { + wdev->conn->auto_auth = false; + } + + wdev->conn->params.ssid = wdev->ssid; + wdev->conn->params.ssid_len = connect->ssid_len; + + /* see if we have the bss already */ + bss = cfg80211_get_conn_bss(wdev); + + if (prev_bssid) { + memcpy(wdev->conn->prev_bssid, prev_bssid, ETH_ALEN); + wdev->conn->prev_bssid_valid = true; + } + + /* we're good if we have a matching bss struct */ + if (bss) { + wdev->conn->state = CFG80211_CONN_AUTHENTICATE_NEXT; + err = cfg80211_conn_do_work(wdev); + cfg80211_put_bss(wdev->wiphy, bss); + } else { + /* otherwise we'll need to scan for the AP first */ + err = cfg80211_conn_scan(wdev); + + /* + * If we can't scan right now, then we need to scan again + * after the current scan finished, since the parameters + * changed (unless we find a good AP anyway). + */ + if (err == -EBUSY) { + err = 0; + wdev->conn->state = CFG80211_CONN_SCAN_AGAIN; + } + } + + if (err) + cfg80211_sme_free(wdev); + + return err; +} + +static int cfg80211_sme_disconnect(struct wireless_dev *wdev, u16 reason) +{ + struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); + int err; + + if (!wdev->conn) + return 0; + + if (!rdev->ops->deauth) + return -EOPNOTSUPP; + + if (wdev->conn->state == CFG80211_CONN_SCANNING || + wdev->conn->state == CFG80211_CONN_SCAN_AGAIN) { + err = 0; + goto out; + } + + /* wdev->conn->params.bssid must be set if > SCANNING */ + err = cfg80211_mlme_deauth(rdev, wdev->netdev, + wdev->conn->params.bssid, + NULL, 0, reason, false); + out: + cfg80211_sme_free(wdev); + return err; +} + +/* + * code shared for in-device and software SME + */ + +static bool cfg80211_is_all_idle(void) +{ + struct cfg80211_registered_device *rdev; + struct wireless_dev *wdev; + bool is_all_idle = true; + + /* + * All devices must be idle as otherwise if you are actively + * scanning some new beacon hints could be learned and would + * count as new regulatory hints. + */ + list_for_each_entry(rdev, &cfg80211_rdev_list, list) { + list_for_each_entry(wdev, &rdev->wdev_list, list) { + wdev_lock(wdev); + if (wdev->conn || wdev->current_bss) + is_all_idle = false; + wdev_unlock(wdev); + } + } + + return is_all_idle; +} + +static void disconnect_work(struct work_struct *work) +{ + rtnl_lock(); + if (cfg80211_is_all_idle()) + regulatory_hint_disconnect(); + rtnl_unlock(); +} + +static DECLARE_WORK(cfg80211_disconnect_work, disconnect_work); + + +/* + * API calls for drivers implementing connect/disconnect and + * SME event handling + */ + 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, @@ -424,9 +575,6 @@ void __cfg80211_connect_result(struct net_device *dev, const u8 *bssid, wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)) return; - if (wdev->sme_state != CFG80211_SME_CONNECTING) - return; - nl80211_send_connect_result(wiphy_to_dev(wdev->wiphy), dev, bssid, req_ie, req_ie_len, resp_ie, resp_ie_len, @@ -463,15 +611,7 @@ void __cfg80211_connect_result(struct net_device *dev, const u8 *bssid, wdev->current_bss = NULL; } - if (wdev->conn) - wdev->conn->state = CFG80211_CONN_IDLE; - if (status != WLAN_STATUS_SUCCESS) { - wdev->sme_state = CFG80211_SME_IDLE; - if (wdev->conn) - kfree(wdev->conn->ie); - kfree(wdev->conn); - wdev->conn = NULL; kfree(wdev->connect_keys); wdev->connect_keys = NULL; wdev->ssid_len = 0; @@ -480,21 +620,16 @@ void __cfg80211_connect_result(struct net_device *dev, const u8 *bssid, } if (!bss) - bss = cfg80211_get_bss(wdev->wiphy, - wdev->conn ? wdev->conn->params.channel : - NULL, - bssid, + 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_from_pub(bss)); wdev->current_bss = bss_from_pub(bss); - wdev->sme_state = CFG80211_SME_CONNECTED; cfg80211_upload_connect_keys(wdev); rcu_read_lock(); @@ -530,8 +665,6 @@ void cfg80211_connect_result(struct net_device *dev, const u8 *bssid, struct cfg80211_event *ev; unsigned long flags; - CFG80211_DEV_WARN_ON(wdev->sme_state != CFG80211_SME_CONNECTING); - ev = kzalloc(sizeof(*ev) + req_ie_len + resp_ie_len, gfp); if (!ev) return; @@ -572,13 +705,8 @@ void __cfg80211_roamed(struct wireless_dev *wdev, wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)) goto out; - if (wdev->sme_state != CFG80211_SME_CONNECTED) - goto out; - - /* internal error -- how did we get to CONNECTED w/o BSS? */ - if (WARN_ON(!wdev->current_bss)) { + if (WARN_ON(!wdev->current_bss)) goto out; - } cfg80211_unhold_bss(wdev->current_bss); cfg80211_put_bss(wdev->wiphy, &wdev->current_bss->pub); @@ -628,8 +756,6 @@ void cfg80211_roamed(struct net_device *dev, struct wireless_dev *wdev = dev->ieee80211_ptr; struct cfg80211_bss *bss; - CFG80211_DEV_WARN_ON(wdev->sme_state != CFG80211_SME_CONNECTED); - bss = cfg80211_get_bss(wdev->wiphy, channel, bssid, wdev->ssid, wdev->ssid_len, WLAN_CAPABILITY_ESS, WLAN_CAPABILITY_ESS); @@ -651,8 +777,6 @@ void cfg80211_roamed_bss(struct net_device *dev, struct cfg80211_event *ev; unsigned long flags; - CFG80211_DEV_WARN_ON(wdev->sme_state != CFG80211_SME_CONNECTED); - if (WARN_ON(!bss)) return; @@ -694,25 +818,14 @@ void __cfg80211_disconnected(struct net_device *dev, const u8 *ie, wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)) return; - if (wdev->sme_state != CFG80211_SME_CONNECTED) - return; - if (wdev->current_bss) { cfg80211_unhold_bss(wdev->current_bss); cfg80211_put_bss(wdev->wiphy, &wdev->current_bss->pub); } wdev->current_bss = NULL; - wdev->sme_state = CFG80211_SME_IDLE; wdev->ssid_len = 0; - if (wdev->conn) { - kfree(wdev->conn->ie); - wdev->conn->ie = NULL; - kfree(wdev->conn); - wdev->conn = NULL; - } - nl80211_send_disconnected(rdev, dev, reason, ie, ie_len, from_ap); /* @@ -741,8 +854,6 @@ void cfg80211_disconnected(struct net_device *dev, u16 reason, struct cfg80211_event *ev; unsigned long flags; - CFG80211_DEV_WARN_ON(wdev->sme_state != CFG80211_SME_CONNECTED); - ev = kzalloc(sizeof(*ev) + ie_len, gfp); if (!ev) return; @@ -760,6 +871,9 @@ void cfg80211_disconnected(struct net_device *dev, u16 reason, } EXPORT_SYMBOL(cfg80211_disconnected); +/* + * API calls for nl80211/wext compatibility code + */ int cfg80211_connect(struct cfg80211_registered_device *rdev, struct net_device *dev, struct cfg80211_connect_params *connect, @@ -767,14 +881,10 @@ int cfg80211_connect(struct cfg80211_registered_device *rdev, const u8 *prev_bssid) { struct wireless_dev *wdev = dev->ieee80211_ptr; - struct cfg80211_bss *bss = NULL; int err; ASSERT_WDEV_LOCK(wdev); - if (wdev->sme_state != CFG80211_SME_IDLE) - return -EALREADY; - if (WARN_ON(wdev->connect_keys)) { kfree(wdev->connect_keys); wdev->connect_keys = NULL; @@ -810,105 +920,22 @@ int cfg80211_connect(struct cfg80211_registered_device *rdev, } } - if (!rdev->ops->connect) { - if (!rdev->ops->auth || !rdev->ops->assoc) - return -EOPNOTSUPP; - - if (WARN_ON(wdev->conn)) - return -EINPROGRESS; - - wdev->conn = kzalloc(sizeof(*wdev->conn), GFP_KERNEL); - if (!wdev->conn) - return -ENOMEM; - - /* - * Copy all parameters, and treat explicitly IEs, BSSID, SSID. - */ - memcpy(&wdev->conn->params, connect, sizeof(*connect)); - if (connect->bssid) { - wdev->conn->params.bssid = wdev->conn->bssid; - memcpy(wdev->conn->bssid, connect->bssid, ETH_ALEN); - } + wdev->connect_keys = connkeys; + memcpy(wdev->ssid, connect->ssid, connect->ssid_len); + wdev->ssid_len = connect->ssid_len; - if (connect->ie) { - wdev->conn->ie = kmemdup(connect->ie, connect->ie_len, - GFP_KERNEL); - wdev->conn->params.ie = wdev->conn->ie; - if (!wdev->conn->ie) { - kfree(wdev->conn); - wdev->conn = NULL; - return -ENOMEM; - } - } - - if (connect->auth_type == NL80211_AUTHTYPE_AUTOMATIC) { - wdev->conn->auto_auth = true; - /* start with open system ... should mostly work */ - wdev->conn->params.auth_type = - NL80211_AUTHTYPE_OPEN_SYSTEM; - } else { - wdev->conn->auto_auth = false; - } - - memcpy(wdev->ssid, connect->ssid, connect->ssid_len); - wdev->ssid_len = connect->ssid_len; - wdev->conn->params.ssid = wdev->ssid; - wdev->conn->params.ssid_len = connect->ssid_len; - - /* see if we have the bss already */ - bss = cfg80211_get_conn_bss(wdev); - - wdev->sme_state = CFG80211_SME_CONNECTING; - wdev->connect_keys = connkeys; - - if (prev_bssid) { - memcpy(wdev->conn->prev_bssid, prev_bssid, ETH_ALEN); - wdev->conn->prev_bssid_valid = true; - } - - /* we're good if we have a matching bss struct */ - if (bss) { - wdev->conn->state = CFG80211_CONN_AUTHENTICATE_NEXT; - err = cfg80211_conn_do_work(wdev); - cfg80211_put_bss(wdev->wiphy, bss); - } else { - /* otherwise we'll need to scan for the AP first */ - err = cfg80211_conn_scan(wdev); - /* - * If we can't scan right now, then we need to scan again - * after the current scan finished, since the parameters - * changed (unless we find a good AP anyway). - */ - if (err == -EBUSY) { - err = 0; - wdev->conn->state = CFG80211_CONN_SCAN_AGAIN; - } - } - if (err) { - kfree(wdev->conn->ie); - kfree(wdev->conn); - wdev->conn = NULL; - wdev->sme_state = CFG80211_SME_IDLE; - wdev->connect_keys = NULL; - wdev->ssid_len = 0; - } - - return err; - } else { - wdev->sme_state = CFG80211_SME_CONNECTING; - wdev->connect_keys = connkeys; + if (!rdev->ops->connect) + err = cfg80211_sme_connect(wdev, connect, prev_bssid); + else err = rdev_connect(rdev, dev, connect); - if (err) { - wdev->connect_keys = NULL; - wdev->sme_state = CFG80211_SME_IDLE; - return err; - } - memcpy(wdev->ssid, connect->ssid, connect->ssid_len); - wdev->ssid_len = connect->ssid_len; - - return 0; + if (err) { + wdev->connect_keys = NULL; + wdev->ssid_len = 0; + return err; } + + return 0; } int cfg80211_disconnect(struct cfg80211_registered_device *rdev, @@ -919,78 +946,17 @@ int cfg80211_disconnect(struct cfg80211_registered_device *rdev, ASSERT_WDEV_LOCK(wdev); - if (wdev->sme_state == CFG80211_SME_IDLE) - return -EINVAL; - kfree(wdev->connect_keys); wdev->connect_keys = NULL; - if (!rdev->ops->disconnect) { - if (!rdev->ops->deauth) - return -EOPNOTSUPP; - - /* was it connected by userspace SME? */ - if (!wdev->conn) { - cfg80211_mlme_down(rdev, dev); - goto disconnect; - } - - if (wdev->sme_state == CFG80211_SME_CONNECTING && - (wdev->conn->state == CFG80211_CONN_SCANNING || - wdev->conn->state == CFG80211_CONN_SCAN_AGAIN)) { - wdev->sme_state = CFG80211_SME_IDLE; - kfree(wdev->conn->ie); - kfree(wdev->conn); - wdev->conn = NULL; - wdev->ssid_len = 0; - return 0; - } - - /* wdev->conn->params.bssid must be set if > SCANNING */ - err = cfg80211_mlme_deauth(rdev, dev, - wdev->conn->params.bssid, - NULL, 0, reason, false); - if (err) - return err; + if (wdev->conn) { + err = cfg80211_sme_disconnect(wdev, reason); + } else if (!rdev->ops->disconnect) { + cfg80211_mlme_down(rdev, dev); + err = 0; } else { err = rdev_disconnect(rdev, dev, reason); - if (err) - return err; } - disconnect: - if (wdev->sme_state == CFG80211_SME_CONNECTED) - __cfg80211_disconnected(dev, NULL, 0, 0, false); - else if (wdev->sme_state == CFG80211_SME_CONNECTING) - __cfg80211_connect_result(dev, NULL, NULL, 0, NULL, 0, - WLAN_STATUS_UNSPECIFIED_FAILURE, - wextev, NULL); - - return 0; -} - -void cfg80211_sme_disassoc(struct net_device *dev, - struct cfg80211_internal_bss *bss) -{ - struct wireless_dev *wdev = dev->ieee80211_ptr; - struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); - u8 bssid[ETH_ALEN]; - - ASSERT_WDEV_LOCK(wdev); - - if (!wdev->conn) - return; - - if (wdev->conn->state == CFG80211_CONN_IDLE) - return; - - /* - * Ok, so the association was made by this SME -- we don't - * want it any more so deauthenticate too. - */ - - memcpy(bssid, bss->pub.bssid, ETH_ALEN); - - cfg80211_mlme_deauth(rdev, dev, bssid, NULL, 0, - WLAN_REASON_DEAUTH_LEAVING, false); + return err; } diff --git a/net/wireless/wext-sme.c b/net/wireless/wext-sme.c index a53f8404f451..14c9a2583ba0 100644 --- a/net/wireless/wext-sme.c +++ b/net/wireless/wext-sme.c @@ -89,7 +89,7 @@ int cfg80211_mgd_wext_siwfreq(struct net_device *dev, wdev_lock(wdev); - if (wdev->sme_state != CFG80211_SME_IDLE) { + if (wdev->conn) { bool event = true; if (wdev->wext.connect.channel == chan) { @@ -188,7 +188,7 @@ int cfg80211_mgd_wext_siwessid(struct net_device *dev, err = 0; - if (wdev->sme_state != CFG80211_SME_IDLE) { + if (wdev->conn) { bool event = true; if (wdev->wext.connect.ssid && len && @@ -277,7 +277,7 @@ int cfg80211_mgd_wext_siwap(struct net_device *dev, wdev_lock(wdev); - if (wdev->sme_state != CFG80211_SME_IDLE) { + if (wdev->conn) { err = 0; /* both automatic */ if (!bssid && !wdev->wext.connect.bssid) @@ -364,7 +364,7 @@ int cfg80211_wext_siwgenie(struct net_device *dev, wdev->wext.ie = ie; wdev->wext.ie_len = ie_len; - if (wdev->sme_state != CFG80211_SME_IDLE) { + if (wdev->conn) { err = cfg80211_disconnect(rdev, dev, WLAN_REASON_DEAUTH_LEAVING, false); if (err) -- cgit v1.2.3 From 3430140ad9da9ec1caaf800af6b0378351919f9c Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Tue, 4 Jun 2013 14:35:07 +0200 Subject: regulatory: use proper enum return value get_reg_request_treatment() returns 0 in one case but is defined to return an enum, use the proper value REG_REQ_OK. Signed-off-by: Johannes Berg --- net/wireless/reg.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'net/wireless') diff --git a/net/wireless/reg.c b/net/wireless/reg.c index e1d6749234c6..5a24c986f34b 100644 --- a/net/wireless/reg.c +++ b/net/wireless/reg.c @@ -1345,7 +1345,7 @@ get_reg_request_treatment(struct wiphy *wiphy, return REG_REQ_OK; return REG_REQ_ALREADY_SET; } - return 0; + return REG_REQ_OK; case NL80211_REGDOM_SET_BY_DRIVER: if (lr->initiator == NL80211_REGDOM_SET_BY_CORE) { if (regdom_changes(pending_request->alpha2)) -- cgit v1.2.3 From 256c90dedf538c59c70e65ba1a1340ce793c5b37 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Tue, 4 Jun 2013 19:21:08 +0200 Subject: cfg80211: fix potential deadlock regression My big locking cleanups caused a problem by registering the rfkill instance with the RTNL held, while the callback also acquires the RTNL. This potentially causes a deadlock since the two locks used (rfkill mutex and RTNL) can be acquired in two different orders. Fix this by (un)registering rfkill without holding the RTNL. This needs to be done after the device struct is registered, but that can also be done w/o holding the RTNL. Signed-off-by: Johannes Berg --- net/wireless/core.c | 23 ++++++++--------------- 1 file changed, 8 insertions(+), 15 deletions(-) (limited to 'net/wireless') diff --git a/net/wireless/core.c b/net/wireless/core.c index 221e76b53a97..99d86ddb6331 100644 --- a/net/wireless/core.c +++ b/net/wireless/core.c @@ -555,14 +555,18 @@ int wiphy_register(struct wiphy *wiphy) /* check and set up bitrates */ ieee80211_set_bitrate_flags(wiphy); - rtnl_lock(); res = device_add(&rdev->wiphy.dev); + if (res) + return res; + + res = rfkill_register(rdev->rfkill); if (res) { - rtnl_unlock(); + device_del(&rdev->wiphy.dev); return res; } + rtnl_lock(); /* set up regulatory info */ wiphy_regulatory_register(wiphy); @@ -589,17 +593,6 @@ int wiphy_register(struct wiphy *wiphy) cfg80211_debugfs_rdev_add(rdev); - res = rfkill_register(rdev->rfkill); - if (res) { - device_del(&rdev->wiphy.dev); - - debugfs_remove_recursive(rdev->wiphy.debugfsdir); - list_del_rcu(&rdev->list); - wiphy_regulatory_deregister(wiphy); - rtnl_unlock(); - return res; - } - rdev->wiphy.registered = true; rtnl_unlock(); return 0; @@ -636,11 +629,11 @@ void wiphy_unregister(struct wiphy *wiphy) rtnl_unlock(); __count == 0; })); + rfkill_unregister(rdev->rfkill); + rtnl_lock(); rdev->wiphy.registered = false; - rfkill_unregister(rdev->rfkill); - BUG_ON(!list_empty(&rdev->wdev_list)); /* -- cgit v1.2.3 From 9b881963c1c81f965f89a3e89b1aa5557f67ee30 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Tue, 4 Jun 2013 22:23:36 +0200 Subject: cfg80211: make wiphy index start at 0 again The change to use atomic_inc_return() for assigning the wiphy index made the first wiphy index 1 instead of 0. This is fine, but we all habitually type "phy0" when we're testing, so make it go back to 0 instead of 1 by subtracting 1 from the index. Signed-off-by: Johannes Berg --- net/wireless/core.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'net/wireless') diff --git a/net/wireless/core.c b/net/wireless/core.c index 99d86ddb6331..4224e7554a76 100644 --- a/net/wireless/core.c +++ b/net/wireless/core.c @@ -301,6 +301,9 @@ struct wiphy *wiphy_new(const struct cfg80211_ops *ops, int sizeof_priv) return NULL; } + /* atomic_inc_return makes it start at 1, make it start at 0 */ + rdev->wiphy_idx--; + /* give it a proper name */ dev_set_name(&rdev->wiphy.dev, PHY_NAME "%d", rdev->wiphy_idx); -- cgit v1.2.3 From 8e7c053853b7d299e8a2b8733659b0df8eee51f7 Mon Sep 17 00:00:00 2001 From: Colleen Twitty Date: Mon, 3 Jun 2013 09:53:39 -0700 Subject: {nl,cfg}80211: make peer link expiration time configurable If a STA has a peer that it hasn't seen any tx activity from for a certain length of time, the peer link is expired. This means the inactive STA is removed from the list of peers and that STA is not considered a peer again unless it re-peers. Previously, this inactivity time was always 30 minutes. Now, add it to the mesh configuration and allow it to be configured. Retain 30 minutes as a default value. Signed-off-by: Colleen Twitty Signed-off-by: Johannes Berg --- include/net/cfg80211.h | 4 ++++ include/uapi/linux/nl80211.h | 5 +++++ net/wireless/mesh.c | 2 ++ net/wireless/nl80211.c | 8 +++++++- 4 files changed, 18 insertions(+), 1 deletion(-) (limited to 'net/wireless') diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h index 855c76ccff38..31ca11672ca8 100644 --- a/include/net/cfg80211.h +++ b/include/net/cfg80211.h @@ -1124,6 +1124,9 @@ struct bss_parameters { * setting for new peer links. * @dot11MeshAwakeWindowDuration: The duration in TUs the STA will remain awake * after transmitting its beacon. + * @plink_timeout: If no tx activity is seen from a STA we've established + * peering with for longer than this time (in seconds), then remove it + * from the STA's list of peers. Default is 30 minutes. */ struct mesh_config { u16 dot11MeshRetryTimeout; @@ -1153,6 +1156,7 @@ struct mesh_config { u16 dot11MeshHWMPconfirmationInterval; enum nl80211_mesh_power_mode power_mode; u16 dot11MeshAwakeWindowDuration; + u32 plink_timeout; }; /** diff --git a/include/uapi/linux/nl80211.h b/include/uapi/linux/nl80211.h index 1f0019d4cce6..ca6facf4df0c 100644 --- a/include/uapi/linux/nl80211.h +++ b/include/uapi/linux/nl80211.h @@ -2577,6 +2577,10 @@ enum nl80211_mesh_power_mode { * * @NL80211_MESHCONF_AWAKE_WINDOW: awake window duration (in TUs) * + * @NL80211_MESHCONF_PLINK_TIMEOUT: If no tx activity is seen from a STA we've + * established peering with for longer than this time (in seconds), then + * remove it from the STA's list of peers. Default is 30 minutes. + * * @__NL80211_MESHCONF_ATTR_AFTER_LAST: internal use */ enum nl80211_meshconf_params { @@ -2608,6 +2612,7 @@ enum nl80211_meshconf_params { NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, NL80211_MESHCONF_POWER_MODE, NL80211_MESHCONF_AWAKE_WINDOW, + NL80211_MESHCONF_PLINK_TIMEOUT, /* keep last */ __NL80211_MESHCONF_ATTR_AFTER_LAST, diff --git a/net/wireless/mesh.c b/net/wireless/mesh.c index 5dfb289ab761..0daaf72e1b81 100644 --- a/net/wireless/mesh.c +++ b/net/wireless/mesh.c @@ -18,6 +18,7 @@ #define MESH_PATH_TO_ROOT_TIMEOUT 6000 #define MESH_ROOT_INTERVAL 5000 #define MESH_ROOT_CONFIRMATION_INTERVAL 2000 +#define MESH_DEFAULT_PLINK_TIMEOUT 1800 /* timeout in seconds */ /* * Minimum interval between two consecutive PREQs originated by the same @@ -75,6 +76,7 @@ const struct mesh_config default_mesh_config = { .dot11MeshHWMPconfirmationInterval = MESH_ROOT_CONFIRMATION_INTERVAL, .power_mode = NL80211_MESH_POWER_ACTIVE, .dot11MeshAwakeWindowDuration = MESH_DEFAULT_AWAKE_WINDOW, + .plink_timeout = MESH_DEFAULT_PLINK_TIMEOUT, }; const struct mesh_setup default_mesh_setup = { diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index 88e820b73674..8aa83c04d4eb 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -4575,7 +4575,9 @@ static int nl80211_get_mesh_config(struct sk_buff *skb, nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE, cur_params.power_mode) || nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW, - cur_params.dot11MeshAwakeWindowDuration)) + cur_params.dot11MeshAwakeWindowDuration) || + nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT, + cur_params.plink_timeout)) goto nla_put_failure; nla_nest_end(msg, pinfoattr); genlmsg_end(msg, hdr); @@ -4616,6 +4618,7 @@ static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_A [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 }, [NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 }, [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 }, + [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 }, }; static const struct nla_policy @@ -4753,6 +4756,9 @@ do { \ FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration, 0, 65535, mask, NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16); + FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, 1, 0xffffffff, + mask, NL80211_MESHCONF_PLINK_TIMEOUT, + nla_get_u32); if (mask_out) *mask_out = mask; -- cgit v1.2.3 From ffb3cf3000aa12facdccbdfcb10bfebda7199209 Mon Sep 17 00:00:00 2001 From: Ashok Nagarajan Date: Mon, 3 Jun 2013 10:33:36 -0700 Subject: {nl,mac,cfg}80211: Allow user to configure basic rates for mesh Currently mesh uses mandatory rates as the default basic rates. Allow basic rates to be configured during mesh join. Basic rates are applied only if channel is also provided with mesh join command. Signed-off-by: Ashok Nagarajan [some whitespace fixes, refuse basic rates w/o channel] Signed-off-by: Johannes Berg --- include/net/cfg80211.h | 2 ++ net/mac80211/cfg.c | 1 + net/mac80211/mesh.c | 4 ---- net/wireless/mesh.c | 10 ++++++++++ net/wireless/nl80211.c | 17 +++++++++++++++++ 5 files changed, 30 insertions(+), 4 deletions(-) (limited to 'net/wireless') diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h index 31ca11672ca8..6a43c34ce96f 100644 --- a/include/net/cfg80211.h +++ b/include/net/cfg80211.h @@ -1176,6 +1176,7 @@ struct mesh_config { * @dtim_period: DTIM period to use * @beacon_interval: beacon interval to use * @mcast_rate: multicat rate for Mesh Node [6Mbps is the default for 802.11a] + * @basic_rates: basic rates to use when creating the mesh * * These parameters are fixed when the mesh is created. */ @@ -1195,6 +1196,7 @@ struct mesh_setup { u8 dtim_period; u16 beacon_interval; int mcast_rate[IEEE80211_NUM_BANDS]; + u32 basic_rates; }; /** diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c index 344a57968079..cd6f35f6e714 100644 --- a/net/mac80211/cfg.c +++ b/net/mac80211/cfg.c @@ -1759,6 +1759,7 @@ static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh, /* mcast rate setting in Mesh Node */ memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate, sizeof(setup->mcast_rate)); + sdata->vif.bss_conf.basic_rates = setup->basic_rates; sdata->vif.bss_conf.beacon_int = setup->beacon_interval; sdata->vif.bss_conf.dtim_period = setup->dtim_period; diff --git a/net/mac80211/mesh.c b/net/mac80211/mesh.c index 4ee527f78677..6c33af482df4 100644 --- a/net/mac80211/mesh.c +++ b/net/mac80211/mesh.c @@ -738,9 +738,6 @@ int ieee80211_start_mesh(struct ieee80211_sub_if_data *sdata) BSS_CHANGED_HT | BSS_CHANGED_BASIC_RATES | BSS_CHANGED_BEACON_INT; - enum ieee80211_band band = ieee80211_get_sdata_band(sdata); - struct ieee80211_supported_band *sband = - sdata->local->hw.wiphy->bands[band]; local->fif_other_bss++; /* mesh ifaces must set allmulti to forward mcast traffic */ @@ -758,7 +755,6 @@ int ieee80211_start_mesh(struct ieee80211_sub_if_data *sdata) sdata->vif.bss_conf.ht_operation_mode = ifmsh->mshcfg.ht_opmode; sdata->vif.bss_conf.enable_beacon = true; - sdata->vif.bss_conf.basic_rates = ieee80211_mandatory_rates(sband); changed |= ieee80211_mps_local_status_update(sdata); diff --git a/net/wireless/mesh.c b/net/wireless/mesh.c index 0daaf72e1b81..30c49202ee4d 100644 --- a/net/wireless/mesh.c +++ b/net/wireless/mesh.c @@ -162,6 +162,16 @@ int __cfg80211_join_mesh(struct cfg80211_registered_device *rdev, setup->chandef.center_freq1 = setup->chandef.chan->center_freq; } + /* + * check if basic rates are available otherwise use mandatory rates as + * basic rates + */ + if (!setup->basic_rates) { + struct ieee80211_supported_band *sband = + rdev->wiphy.bands[setup->chandef.chan->band]; + setup->basic_rates = ieee80211_mandatory_rates(sband); + } + if (!cfg80211_reg_can_beacon(&rdev->wiphy, &setup->chandef)) return -EINVAL; diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index 8aa83c04d4eb..687cb6497598 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -7487,6 +7487,23 @@ static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info) setup.chandef.chan = NULL; } + if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) { + u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); + int n_rates = + nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); + struct ieee80211_supported_band *sband; + + if (!setup.chandef.chan) + return -EINVAL; + + sband = rdev->wiphy.bands[setup.chandef.chan->band]; + + err = ieee80211_get_ratemask(sband, rates, n_rates, + &setup.basic_rates); + if (err) + return err; + } + return cfg80211_join_mesh(rdev, dev, &setup, &cfg); } -- cgit v1.2.3 From 3d124ea27ae2fc895f81725f0b4c7f3d9c733df4 Mon Sep 17 00:00:00 2001 From: Jouni Malinen Date: Mon, 27 May 2013 18:24:02 +0300 Subject: cfg80211: fix VHT TDLS peer AID verification I (Johannes) accidentally applied the first version of the patch ("Allow TDLS peer AID to be configured for VHT"). Now apply just the changes between v1 and v2 to get the AID verification and prefer the new attribute over the old one. Signed-off-by: Jouni Malinen Signed-off-by: Johannes Berg --- net/wireless/nl80211.c | 12 +++++++----- 1 file changed, 7 insertions(+), 5 deletions(-) (limited to 'net/wireless') diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index 687cb6497598..7183410fcd41 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -3972,10 +3972,10 @@ static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info) params.listen_interval = nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]); - if (info->attrs[NL80211_ATTR_STA_AID]) - params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]); - else + if (info->attrs[NL80211_ATTR_PEER_AID]) params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]); + else + params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]); if (!params.aid || params.aid > IEEE80211_MAX_AID) return -EINVAL; @@ -4027,7 +4027,8 @@ static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info) params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD; /* TDLS peers cannot be added */ - if (params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) + if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) || + info->attrs[NL80211_ATTR_PEER_AID]) return -EINVAL; /* but don't bother the driver with it */ params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER); @@ -4053,7 +4054,8 @@ static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info) if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED)) return -EINVAL; /* TDLS peers cannot be added */ - if (params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) + if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) || + info->attrs[NL80211_ATTR_PEER_AID]) return -EINVAL; break; case NL80211_IFTYPE_STATION: -- cgit v1.2.3 From ea141b75ae29636b5c9e9d2e2e77b3dd1ab4c934 Mon Sep 17 00:00:00 2001 From: Antonio Quartulli Date: Tue, 11 Jun 2013 14:20:03 +0200 Subject: nl80211: allow sending CMD_FRAME without specifying any frequency Users may want to send a frame on the current channel without specifying it. This is particularly useful for the correct implementation of the IBSS/RSN support in wpa_supplicant which requires to receive and send AUTH frames. Make mgmt_tx pass a NULL channel to the driver if none has been specified by the user. Signed-off-by: Antonio Quartulli Signed-off-by: Johannes Berg --- net/wireless/nl80211.c | 19 +++++++++++++++---- 1 file changed, 15 insertions(+), 4 deletions(-) (limited to 'net/wireless') diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index 7183410fcd41..398ce2c59686 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -7147,6 +7147,9 @@ static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info) return -EOPNOTSUPP; switch (wdev->iftype) { + case NL80211_IFTYPE_P2P_DEVICE: + if (!info->attrs[NL80211_ATTR_WIPHY_FREQ]) + return -EINVAL; case NL80211_IFTYPE_STATION: case NL80211_IFTYPE_ADHOC: case NL80211_IFTYPE_P2P_CLIENT: @@ -7154,7 +7157,6 @@ static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info) case NL80211_IFTYPE_AP_VLAN: case NL80211_IFTYPE_MESH_POINT: case NL80211_IFTYPE_P2P_GO: - case NL80211_IFTYPE_P2P_DEVICE: break; default: return -EOPNOTSUPP; @@ -7182,9 +7184,18 @@ static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info) no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]); - err = nl80211_parse_chandef(rdev, info, &chandef); - if (err) - return err; + /* get the channel if any has been specified, otherwise pass NULL to + * the driver. The latter will use the current one + */ + chandef.chan = NULL; + if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { + err = nl80211_parse_chandef(rdev, info, &chandef); + if (err) + return err; + } + + if (!chandef.chan && offchan) + return -EINVAL; if (!dont_wait_for_ack) { msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); -- cgit v1.2.3 From 940d0ac9dbe3fb9d4806e96f006286c2e476deed Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Tue, 11 Jun 2013 16:51:03 +0200 Subject: cfg80211: fix rtnl leak in wiphy dump error cases In two wiphy dump error cases, most often when the dump allocation must be increased, the RTNL is leaked. This quickly results in a complete system lockup. Release the RTNL correctly. Reported-by: Emmanuel Grumbach Signed-off-by: Johannes Berg --- net/wireless/nl80211.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'net/wireless') diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index 398ce2c59686..e4028197b75d 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -1541,8 +1541,10 @@ static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb) int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]); netdev = dev_get_by_index(sock_net(skb->sk), ifidx); - if (!netdev) + if (!netdev) { + rtnl_unlock(); return -ENODEV; + } if (netdev->ieee80211_ptr) { dev = wiphy_to_dev( netdev->ieee80211_ptr->wiphy); @@ -1586,6 +1588,7 @@ static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb) !skb->len && cb->min_dump_alloc < 4096) { cb->min_dump_alloc = 4096; + rtnl_unlock(); return 1; } idx--; -- cgit v1.2.3