From ff1b6e69ad4f31fb3c9c6da2665655f2e798dd70 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Wed, 4 May 2011 15:37:28 +0200 Subject: nl80211/cfg80211: WoWLAN support This is based on (but now quite far from) the original work from Luis and Eliad. Add support for configuring WoWLAN triggers, and getting the configuration out again. Changes from the original patchset are too numerous to list, but one important change needs highlighting: the suspend() callback is passed NULL for the trigger configuration if userspace has not configured WoWLAN at all. Signed-off-by: Luis R. Rodriguez Signed-off-by: Eliad Peller Signed-off-by: Johannes Berg Signed-off-by: John W. Linville --- net/mac80211/cfg.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'net/mac80211/cfg.c') diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c index 12d52cec9515..321d598eb8cb 100644 --- a/net/mac80211/cfg.c +++ b/net/mac80211/cfg.c @@ -1297,7 +1297,8 @@ static int ieee80211_set_channel(struct wiphy *wiphy, } #ifdef CONFIG_PM -static int ieee80211_suspend(struct wiphy *wiphy) +static int ieee80211_suspend(struct wiphy *wiphy, + struct cfg80211_wowlan *wowlan) { return __ieee80211_suspend(wiphy_priv(wiphy)); } -- cgit v1.2.3 From eecc48000afe2ca6da22122d553b7cad294e42fc Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Wed, 4 May 2011 15:37:29 +0200 Subject: mac80211: add basic support for WoWLAN This adds basic support for the new WoWLAN configuration in mac80211. The behaviour is completely offloaded to the driver though, with two new callbacks (suspend/resume). Options for the driver include a complete reconfiguration after wakeup, and exposing all the triggers it wants to support. Signed-off-by: Johannes Berg Signed-off-by: John W. Linville --- net/mac80211/cfg.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'net/mac80211/cfg.c') diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c index 321d598eb8cb..1ebc13383ae7 100644 --- a/net/mac80211/cfg.c +++ b/net/mac80211/cfg.c @@ -1300,7 +1300,7 @@ static int ieee80211_set_channel(struct wiphy *wiphy, static int ieee80211_suspend(struct wiphy *wiphy, struct cfg80211_wowlan *wowlan) { - return __ieee80211_suspend(wiphy_priv(wiphy)); + return __ieee80211_suspend(wiphy_priv(wiphy), wowlan); } static int ieee80211_resume(struct wiphy *wiphy) -- cgit v1.2.3 From b130e5cec958bae3867cf6ab09a9b24ba8fada01 Mon Sep 17 00:00:00 2001 From: Javier Cardona Date: Tue, 3 May 2011 16:57:07 -0700 Subject: nl80211: Introduce NL80211_MESH_SETUP_USERSPACE_AMPE Introduce a new configuration option to support AMPE from userspace. Prior to this series we only supported authentication in userspace: an authentication daemon would authenticate peer candidates in userspace and hand them over to the kernel. From that point the mesh stack would take over and establish a peer link (Mesh Peering Management). These patches introduce support for Authenticated Mesh Peering Exchange in userspace. The userspace daemon implements the AMPE protocol and on successfull completion create mesh peers and install encryption keys. Signed-off-by: Javier Cardona Signed-off-by: John W. Linville --- net/mac80211/cfg.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) (limited to 'net/mac80211/cfg.c') diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c index 1ebc13383ae7..18c2555e04e6 100644 --- a/net/mac80211/cfg.c +++ b/net/mac80211/cfg.c @@ -1064,7 +1064,11 @@ static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh, memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len); ifmsh->mesh_pp_id = setup->path_sel_proto; ifmsh->mesh_pm_id = setup->path_metric; - ifmsh->is_secure = setup->is_secure; + ifmsh->security = IEEE80211_MESH_SEC_NONE; + if (setup->is_authenticated) + ifmsh->security |= IEEE80211_MESH_SEC_AUTHED; + if (setup->is_secure) + ifmsh->security |= IEEE80211_MESH_SEC_SECURED; return 0; } -- cgit v1.2.3 From 9c3990aaec0ad9f686ef6480f6861f2df89b2a7a Mon Sep 17 00:00:00 2001 From: Javier Cardona Date: Tue, 3 May 2011 16:57:11 -0700 Subject: nl80211: Let userspace drive the peer link management states. Signed-off-by: Javier Cardona Signed-off-by: John W. Linville --- net/mac80211/cfg.c | 30 +++++++++++++++++++++--------- 1 file changed, 21 insertions(+), 9 deletions(-) (limited to 'net/mac80211/cfg.c') diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c index 18c2555e04e6..51f775772d9e 100644 --- a/net/mac80211/cfg.c +++ b/net/mac80211/cfg.c @@ -734,15 +734,27 @@ static void sta_apply_parameters(struct ieee80211_local *local, params->ht_capa, &sta->sta.ht_cap); - if (ieee80211_vif_is_mesh(&sdata->vif) && params->plink_action) { - switch (params->plink_action) { - case PLINK_ACTION_OPEN: - mesh_plink_open(sta); - break; - case PLINK_ACTION_BLOCK: - mesh_plink_block(sta); - break; - } + if (ieee80211_vif_is_mesh(&sdata->vif)) { + if (sdata->u.mesh.security & IEEE80211_MESH_SEC_SECURED) + switch (params->plink_state) { + case PLINK_LISTEN: + case PLINK_ESTAB: + case PLINK_BLOCKED: + sta->plink_state = params->plink_state; + break; + default: + /* nothing */ + break; + } + else + switch (params->plink_action) { + case PLINK_ACTION_OPEN: + mesh_plink_open(sta); + break; + case PLINK_ACTION_BLOCK: + mesh_plink_block(sta); + break; + } } } -- cgit v1.2.3 From ff973af74aa6932ca4758266bccec68e8135ddf7 Mon Sep 17 00:00:00 2001 From: Thomas Pedersen Date: Tue, 3 May 2011 16:57:12 -0700 Subject: nl80211: allow installing keys for a meshif Signed-off-by: Thomas Pedersen Signed-off-by: Javier Cardona Signed-off-by: John W. Linville --- net/mac80211/cfg.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'net/mac80211/cfg.c') diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c index 51f775772d9e..c416cce5e1ed 100644 --- a/net/mac80211/cfg.c +++ b/net/mac80211/cfg.c @@ -136,7 +136,10 @@ static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev, mutex_lock(&sdata->local->sta_mtx); if (mac_addr) { - sta = sta_info_get_bss(sdata, mac_addr); + if (ieee80211_vif_is_mesh(&sdata->vif)) + sta = sta_info_get(sdata, mac_addr); + else + sta = sta_info_get_bss(sdata, mac_addr); if (!sta) { ieee80211_key_free(sdata->local, key); err = -ENOENT; -- cgit v1.2.3 From 79f460ca49d8d5700756ab7071c951311c7f29cc Mon Sep 17 00:00:00 2001 From: Luciano Coelho Date: Wed, 11 May 2011 17:09:36 +0300 Subject: mac80211: add support for HW scheduled scan Implement support for HW scheduled scan. The mac80211 code doesn't perform scheduled scans itself, but calls the driver to start and stop scheduled scans. This patch also creates a trace event class to be used by drv_hw_scan and the new drv_sched_scan_start and drv_sched_stop functions, in order to avoid duplicate code. Signed-off-by: Luciano Coelho Signed-off-by: John W. Linville --- net/mac80211/cfg.c | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) (limited to 'net/mac80211/cfg.c') diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c index c416cce5e1ed..a2ff47493e0a 100644 --- a/net/mac80211/cfg.c +++ b/net/mac80211/cfg.c @@ -1362,6 +1362,31 @@ static int ieee80211_scan(struct wiphy *wiphy, return ieee80211_request_scan(sdata, req); } +static int +ieee80211_sched_scan_start(struct wiphy *wiphy, + struct net_device *dev, + struct cfg80211_sched_scan_request *req) +{ + struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); + + if (!sdata->local->ops->sched_scan_start) + return -EOPNOTSUPP; + + return ieee80211_request_sched_scan_start(sdata, req); +} + +static int +ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev, + bool driver_initiated) +{ + struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); + + if (!sdata->local->ops->sched_scan_stop) + return -EOPNOTSUPP; + + return ieee80211_request_sched_scan_stop(sdata, driver_initiated); +} + static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev, struct cfg80211_auth_request *req) { @@ -2103,6 +2128,8 @@ struct cfg80211_ops mac80211_config_ops = { .suspend = ieee80211_suspend, .resume = ieee80211_resume, .scan = ieee80211_scan, + .sched_scan_start = ieee80211_sched_scan_start, + .sched_scan_stop = ieee80211_sched_scan_stop, .auth = ieee80211_auth, .assoc = ieee80211_assoc, .deauth = ieee80211_deauth, -- cgit v1.2.3 From 4daf50f20256e0022c87c1609226e971a70c82fd Mon Sep 17 00:00:00 2001 From: Yogesh Ashok Powar Date: Thu, 12 May 2011 09:32:17 -0400 Subject: mac80211: Fix mesh-related build breakage... MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit net/mac80211/cfg.c: In function ‘sta_apply_parameters’: net/mac80211/cfg.c:746: error: ‘struct sta_info’ has no member named ‘plink_state’ make[1]: *** [net/mac80211/cfg.o] Error 1 make: *** [net/mac80211/mac80211.ko] Error 2 Signed-off-by: John W. Linville --- net/mac80211/cfg.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'net/mac80211/cfg.c') diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c index a2ff47493e0a..ed3400cd7a5a 100644 --- a/net/mac80211/cfg.c +++ b/net/mac80211/cfg.c @@ -738,6 +738,7 @@ static void sta_apply_parameters(struct ieee80211_local *local, &sta->sta.ht_cap); if (ieee80211_vif_is_mesh(&sdata->vif)) { +#ifdef CONFIG_MAC80211_MESH if (sdata->u.mesh.security & IEEE80211_MESH_SEC_SECURED) switch (params->plink_state) { case PLINK_LISTEN: @@ -758,6 +759,7 @@ static void sta_apply_parameters(struct ieee80211_local *local, mesh_plink_block(sta); break; } +#endif } } -- cgit v1.2.3 From 5c0c36412b2dc6b1e243c7e9115306fe286583b7 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Thu, 12 May 2011 14:31:49 +0200 Subject: mac80211: make key locking clearer The code in ieee80211_del_key() doesn't acquire the key_mtx properly when it dereferences the keys. It turns out that isn't actually necessary since the key_mtx itself seems to be redundant since all key manipulations are done under the RTNL, but as long as we have the key_mtx we should use it the right way too. Signed-off-by: Johannes Berg Signed-off-by: John W. Linville --- net/mac80211/cfg.c | 38 +++++++++++++++----------------------- 1 file changed, 15 insertions(+), 23 deletions(-) (limited to 'net/mac80211/cfg.c') diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c index ed3400cd7a5a..94690366321c 100644 --- a/net/mac80211/cfg.c +++ b/net/mac80211/cfg.c @@ -160,13 +160,14 @@ static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev, static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev, u8 key_idx, bool pairwise, const u8 *mac_addr) { - struct ieee80211_sub_if_data *sdata; + struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); + struct ieee80211_local *local = sdata->local; struct sta_info *sta; + struct ieee80211_key *key = NULL; int ret; - sdata = IEEE80211_DEV_TO_SUB_IF(dev); - - mutex_lock(&sdata->local->sta_mtx); + mutex_lock(&local->sta_mtx); + mutex_lock(&local->key_mtx); if (mac_addr) { ret = -ENOENT; @@ -175,33 +176,24 @@ static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev, if (!sta) goto out_unlock; - if (pairwise) { - if (sta->ptk) { - ieee80211_key_free(sdata->local, sta->ptk); - ret = 0; - } - } else { - if (sta->gtk[key_idx]) { - ieee80211_key_free(sdata->local, - sta->gtk[key_idx]); - ret = 0; - } - } - - goto out_unlock; - } + if (pairwise) + key = sta->ptk; + else + key = sta->gtk[key_idx]; + } else + key = sdata->keys[key_idx]; - if (!sdata->keys[key_idx]) { + if (!key) { ret = -ENOENT; goto out_unlock; } - ieee80211_key_free(sdata->local, sdata->keys[key_idx]); - WARN_ON(sdata->keys[key_idx]); + __ieee80211_key_free(key); ret = 0; out_unlock: - mutex_unlock(&sdata->local->sta_mtx); + mutex_unlock(&local->key_mtx); + mutex_unlock(&local->sta_mtx); return ret; } -- cgit v1.2.3 From a3836e02ba4c50db958d32d710b226f2408623dc Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Thu, 12 May 2011 15:11:37 +0200 Subject: mac80211: fix a few RCU issues A few configuration functions correctly do rcu_read_lock() but don't correctly reference some pointers protected by RCU. Fix that. Cc: stable@kernel.org Signed-off-by: Johannes Berg Signed-off-by: John W. Linville --- net/mac80211/cfg.c | 12 +++++++----- 1 file changed, 7 insertions(+), 5 deletions(-) (limited to 'net/mac80211/cfg.c') diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c index 94690366321c..303f33fcb844 100644 --- a/net/mac80211/cfg.c +++ b/net/mac80211/cfg.c @@ -223,11 +223,11 @@ static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev, goto out; if (pairwise) - key = sta->ptk; + key = rcu_dereference(sta->ptk); else if (key_idx < NUM_DEFAULT_KEYS) - key = sta->gtk[key_idx]; + key = rcu_dereference(sta->gtk[key_idx]); } else - key = sdata->keys[key_idx]; + key = rcu_dereference(sdata->keys[key_idx]); if (!key) goto out; @@ -952,8 +952,10 @@ static int ieee80211_change_mpath(struct wiphy *wiphy, static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop, struct mpath_info *pinfo) { - if (mpath->next_hop) - memcpy(next_hop, mpath->next_hop->sta.addr, ETH_ALEN); + struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop); + + if (next_hop_sta) + memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN); else memset(next_hop, 0, ETH_ALEN); -- cgit v1.2.3 From 85a9994a0a6cba1a6cc6af4bd3ebd85f778be0fe Mon Sep 17 00:00:00 2001 From: Luciano Coelho Date: Thu, 12 May 2011 16:28:29 +0300 Subject: cfg80211/mac80211: avoid bounce back mac->cfg->mac on sched_scan_stopped When sched_scan_stopped was called by the driver, mac80211 calls cfg80211, which in turn was calling mac80211 back with a flag "driver_initiated". This flag was used so that mac80211 would do the necessary cleanup but would not call the driver. This was enough to prevent the bounce back between the driver and mac80211, but not between mac80211 and cfg80211. To fix this, we now do the cleanup in mac80211 before calling cfg80211. To help with locking issues, the workqueue was moved from cfg80211 to mac80211. Reported-by: Johannes Berg Signed-off-by: Luciano Coelho Signed-off-by: John W. Linville --- net/mac80211/cfg.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) (limited to 'net/mac80211/cfg.c') diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c index 303f33fcb844..2d1c1a5f3c51 100644 --- a/net/mac80211/cfg.c +++ b/net/mac80211/cfg.c @@ -1372,15 +1372,14 @@ ieee80211_sched_scan_start(struct wiphy *wiphy, } static int -ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev, - bool driver_initiated) +ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); if (!sdata->local->ops->sched_scan_stop) return -EOPNOTSUPP; - return ieee80211_request_sched_scan_stop(sdata, driver_initiated); + return ieee80211_request_sched_scan_stop(sdata); } static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev, -- cgit v1.2.3 From 40b275b69ee660274b77fb612b0db31fd282fc3f Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Fri, 13 May 2011 14:15:49 +0200 Subject: mac80211: sparse RCU annotations This adds sparse RCU annotations to most of mac80211, only the mesh code remains to be done. Due the the previous patches, the annotations are pretty simple. The only thing that this actually changes is removing the RCU usage of key->sta in debugfs since this pointer isn't actually an RCU-managed pointer (it only has a single assignment done before the key even goes live). As that is otherwise harmless, I decided to make it part of this patch. Signed-off-by: Johannes Berg Signed-off-by: John W. Linville --- net/mac80211/cfg.c | 17 +++++++---------- 1 file changed, 7 insertions(+), 10 deletions(-) (limited to 'net/mac80211/cfg.c') diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c index 2d1c1a5f3c51..6ecd5862735d 100644 --- a/net/mac80211/cfg.c +++ b/net/mac80211/cfg.c @@ -177,11 +177,11 @@ static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev, goto out_unlock; if (pairwise) - key = sta->ptk; + key = key_mtx_dereference(local, sta->ptk); else - key = sta->gtk[key_idx]; + key = key_mtx_dereference(local, sta->gtk[key_idx]); } else - key = sdata->keys[key_idx]; + key = key_mtx_dereference(local, sdata->keys[key_idx]); if (!key) { ret = -ENOENT; @@ -463,7 +463,7 @@ static int ieee80211_config_beacon(struct ieee80211_sub_if_data *sdata, int size; int err = -EINVAL; - old = sdata->u.ap.beacon; + old = rtnl_dereference(sdata->u.ap.beacon); /* head must not be zero-length */ if (params->head && !params->head_len) @@ -558,8 +558,7 @@ static int ieee80211_add_beacon(struct wiphy *wiphy, struct net_device *dev, sdata = IEEE80211_DEV_TO_SUB_IF(dev); - old = sdata->u.ap.beacon; - + old = rtnl_dereference(sdata->u.ap.beacon); if (old) return -EALREADY; @@ -574,8 +573,7 @@ static int ieee80211_set_beacon(struct wiphy *wiphy, struct net_device *dev, sdata = IEEE80211_DEV_TO_SUB_IF(dev); - old = sdata->u.ap.beacon; - + old = rtnl_dereference(sdata->u.ap.beacon); if (!old) return -ENOENT; @@ -589,8 +587,7 @@ static int ieee80211_del_beacon(struct wiphy *wiphy, struct net_device *dev) sdata = IEEE80211_DEV_TO_SUB_IF(dev); - old = sdata->u.ap.beacon; - + old = rtnl_dereference(sdata->u.ap.beacon); if (!old) return -ENOENT; -- cgit v1.2.3 From 57cf8043a64b56a10b9f194572548a3dfb62e596 Mon Sep 17 00:00:00 2001 From: Javier Cardona Date: Fri, 13 May 2011 10:45:43 -0700 Subject: nl80211: Move peer link state definition to nl80211 These definitions need to be exposed now that we can set the peer link states via NL80211_ATTR_STA_PLINK_STATE. They were already being (opaquely) reported by NL80211_STA_INFO_PLINK_STATE. Signed-off-by: Javier Cardona Signed-off-by: John W. Linville --- net/mac80211/cfg.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'net/mac80211/cfg.c') diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c index 6ecd5862735d..be70c70d3f5b 100644 --- a/net/mac80211/cfg.c +++ b/net/mac80211/cfg.c @@ -730,9 +730,9 @@ static void sta_apply_parameters(struct ieee80211_local *local, #ifdef CONFIG_MAC80211_MESH if (sdata->u.mesh.security & IEEE80211_MESH_SEC_SECURED) switch (params->plink_state) { - case PLINK_LISTEN: - case PLINK_ESTAB: - case PLINK_BLOCKED: + case NL80211_PLINK_LISTEN: + case NL80211_PLINK_ESTAB: + case NL80211_PLINK_BLOCKED: sta->plink_state = params->plink_state; break; default: -- cgit v1.2.3