From d070f9137af960abd78525440684421fd5e0c0e7 Mon Sep 17 00:00:00 2001
From: Stephen Hemminger <stephen@networkplumber.org>
Date: Wed, 29 Oct 2014 22:55:58 -0700
Subject: mac80211: fix spelling errors

Use codespell to find spelling errors.

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
---
 net/mac80211/chan.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'net/mac80211/chan.c')

diff --git a/net/mac80211/chan.c b/net/mac80211/chan.c
index 4c74e8da64b9..ee71bb6f64f7 100644
--- a/net/mac80211/chan.c
+++ b/net/mac80211/chan.c
@@ -1634,7 +1634,7 @@ int ieee80211_vif_change_bandwidth(struct ieee80211_sub_if_data *sdata,
 		}
 		break;
 	case IEEE80211_CHANCTX_WILL_BE_REPLACED:
-		/* TODO: Perhaps the bandwith change could be treated as a
+		/* TODO: Perhaps the bandwidth change could be treated as a
 		 * reservation itself? */
 		ret = -EBUSY;
 		goto out;
-- 
cgit v1.2.3


From 6e0bd6c35b021dc73a81ebd1ef79761233c48b50 Mon Sep 17 00:00:00 2001
From: Rostislav Lisovy <lisovy@gmail.com>
Date: Mon, 3 Nov 2014 10:33:18 +0100
Subject: cfg80211: 802.11p OCB mode handling

This patch adds new iface type (NL80211_IFTYPE_OCB) representing
the OCB (Outside the Context of a BSS) mode.
When establishing a connection to the network a cfg80211_join_ocb
function is called (particular nl80211_command is added as well).
A mandatory parameters during the ocb_join operation are 'center
frequency' and 'channel width (5/10 MHz)'.

Changes done in mac80211 are minimal possible required to avoid
many warnings (warning: enumeration value 'NL80211_IFTYPE_OCB'
not handled in switch) during compilation. Full functionality
(where needed) is added in the following patch.

Signed-off-by: Rostislav Lisovy <rostislav.lisovy@fel.cvut.cz>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
---
 include/net/cfg80211.h       | 19 ++++++++++
 include/uapi/linux/nl80211.h | 11 ++++++
 net/mac80211/cfg.c           |  1 +
 net/mac80211/chan.c          |  2 +
 net/mac80211/iface.c         |  5 +++
 net/mac80211/util.c          |  3 ++
 net/wireless/Makefile        |  2 +-
 net/wireless/chan.c          |  8 ++++
 net/wireless/core.c          |  3 ++
 net/wireless/core.h          | 12 ++++++
 net/wireless/nl80211.c       | 39 ++++++++++++++++++++
 net/wireless/ocb.c           | 88 ++++++++++++++++++++++++++++++++++++++++++++
 net/wireless/rdev-ops.h      | 21 +++++++++++
 net/wireless/trace.h         | 21 +++++++++++
 net/wireless/util.c          |  5 ++-
 15 files changed, 238 insertions(+), 2 deletions(-)
 create mode 100644 net/wireless/ocb.c

(limited to 'net/mac80211/chan.c')

diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index f67948e18600..5c3acd07acd9 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -1358,6 +1358,16 @@ struct mesh_setup {
 	u32 basic_rates;
 };
 
+/**
+ * struct ocb_setup - 802.11p OCB mode setup configuration
+ * @chandef: defines the channel to use
+ *
+ * These parameters are fixed when connecting to the network
+ */
+struct ocb_setup {
+	struct cfg80211_chan_def chandef;
+};
+
 /**
  * struct ieee80211_txq_params - TX queue parameters
  * @ac: AC identifier
@@ -2352,6 +2362,11 @@ struct cfg80211_qos_map {
  *	with the peer followed by immediate teardown when the addition is later
  *	rejected)
  * @del_tx_ts: remove an existing TX TS
+ *
+ * @join_ocb: join the OCB network with the specified parameters
+ *	(invoked with the wireless_dev mutex held)
+ * @leave_ocb: leave the current OCB network
+ *	(invoked with the wireless_dev mutex held)
  */
 struct cfg80211_ops {
 	int	(*suspend)(struct wiphy *wiphy, struct cfg80211_wowlan *wow);
@@ -2433,6 +2448,10 @@ struct cfg80211_ops {
 			     const struct mesh_setup *setup);
 	int	(*leave_mesh)(struct wiphy *wiphy, struct net_device *dev);
 
+	int	(*join_ocb)(struct wiphy *wiphy, struct net_device *dev,
+			    struct ocb_setup *setup);
+	int	(*leave_ocb)(struct wiphy *wiphy, struct net_device *dev);
+
 	int	(*change_bss)(struct wiphy *wiphy, struct net_device *dev,
 			      struct bss_parameters *params);
 
diff --git a/include/uapi/linux/nl80211.h b/include/uapi/linux/nl80211.h
index f7daae59248e..9b3025e4377a 100644
--- a/include/uapi/linux/nl80211.h
+++ b/include/uapi/linux/nl80211.h
@@ -746,6 +746,11 @@
  *	destination %NL80211_ATTR_MAC on the interface identified by
  *	%NL80211_ATTR_IFINDEX.
  *
+ * @NL80211_CMD_JOIN_OCB: Join the OCB network. The center frequency and
+ *	bandwidth of a channel must be given.
+ * @NL80211_CMD_LEAVE_OCB: Leave the OCB network -- no special arguments, the
+ *	network is determined by the network interface.
+ *
  * @NL80211_CMD_MAX: highest used command number
  * @__NL80211_CMD_AFTER_LAST: internal use
  */
@@ -922,6 +927,9 @@ enum nl80211_commands {
 
 	NL80211_CMD_GET_MPP,
 
+	NL80211_CMD_JOIN_OCB,
+	NL80211_CMD_LEAVE_OCB,
+
 	/* add new commands above here */
 
 	/* used to define NL80211_CMD_MAX below */
@@ -2074,6 +2082,8 @@ enum nl80211_attrs {
  *	and therefore can't be created in the normal ways, use the
  *	%NL80211_CMD_START_P2P_DEVICE and %NL80211_CMD_STOP_P2P_DEVICE
  *	commands to create and destroy one
+ * @NL80211_IF_TYPE_OCB: Outside Context of a BSS
+ *	This mode corresponds to the MIB variable dot11OCBActivated=true
  * @NL80211_IFTYPE_MAX: highest interface type number currently defined
  * @NUM_NL80211_IFTYPES: number of defined interface types
  *
@@ -2093,6 +2103,7 @@ enum nl80211_iftype {
 	NL80211_IFTYPE_P2P_CLIENT,
 	NL80211_IFTYPE_P2P_GO,
 	NL80211_IFTYPE_P2P_DEVICE,
+	NL80211_IFTYPE_OCB,
 
 	/* keep last */
 	NUM_NL80211_IFTYPES,
diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index b9659b8b70f8..1e2afc95ad09 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -230,6 +230,7 @@ static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
 	case NUM_NL80211_IFTYPES:
 	case NL80211_IFTYPE_P2P_CLIENT:
 	case NL80211_IFTYPE_P2P_GO:
+	case NL80211_IFTYPE_OCB:
 		/* shouldn't happen */
 		WARN_ON_ONCE(1);
 		break;
diff --git a/net/mac80211/chan.c b/net/mac80211/chan.c
index ee71bb6f64f7..ff1f877e3b63 100644
--- a/net/mac80211/chan.c
+++ b/net/mac80211/chan.c
@@ -270,6 +270,7 @@ ieee80211_get_chanctx_max_required_bw(struct ieee80211_local *local,
 		case NL80211_IFTYPE_ADHOC:
 		case NL80211_IFTYPE_WDS:
 		case NL80211_IFTYPE_MESH_POINT:
+		case NL80211_IFTYPE_OCB:
 			width = vif->bss_conf.chandef.width;
 			break;
 		case NL80211_IFTYPE_UNSPECIFIED:
@@ -909,6 +910,7 @@ ieee80211_vif_chanctx_reservation_complete(struct ieee80211_sub_if_data *sdata)
 	case NL80211_IFTYPE_ADHOC:
 	case NL80211_IFTYPE_AP:
 	case NL80211_IFTYPE_MESH_POINT:
+	case NL80211_IFTYPE_OCB:
 		ieee80211_queue_work(&sdata->local->hw,
 				     &sdata->csa_finalize_work);
 		break;
diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c
index 1ffcc0701244..d69e7532095f 100644
--- a/net/mac80211/iface.c
+++ b/net/mac80211/iface.c
@@ -521,6 +521,7 @@ int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up)
 	case NL80211_IFTYPE_MONITOR:
 	case NL80211_IFTYPE_ADHOC:
 	case NL80211_IFTYPE_P2P_DEVICE:
+	case NL80211_IFTYPE_OCB:
 		/* no special treatment */
 		break;
 	case NL80211_IFTYPE_UNSPECIFIED:
@@ -631,6 +632,7 @@ int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up)
 		case NL80211_IFTYPE_ADHOC:
 		case NL80211_IFTYPE_AP:
 		case NL80211_IFTYPE_MESH_POINT:
+		case NL80211_IFTYPE_OCB:
 			netif_carrier_off(dev);
 			break;
 		case NL80211_IFTYPE_WDS:
@@ -1351,6 +1353,9 @@ static void ieee80211_setup_sdata(struct ieee80211_sub_if_data *sdata,
 		sdata->vif.bss_conf.bssid = sdata->u.mgd.bssid;
 		ieee80211_sta_setup_sdata(sdata);
 		break;
+	case NL80211_IFTYPE_OCB:
+		/* to be implemented in the future */
+		break;
 	case NL80211_IFTYPE_ADHOC:
 		sdata->vif.bss_conf.bssid = sdata->u.ibss.bssid;
 		ieee80211_ibss_setup_sdata(sdata);
diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index 666aa1306c45..d7d69c89ff34 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -1841,6 +1841,9 @@ int ieee80211_reconfig(struct ieee80211_local *local)
 			ieee80211_bss_info_change_notify(sdata, changed);
 			sdata_unlock(sdata);
 			break;
+		case NL80211_IFTYPE_OCB:
+			/* to be implemented in the future */
+			break;
 		case NL80211_IFTYPE_ADHOC:
 			changed |= BSS_CHANGED_IBSS;
 			/* fall through */
diff --git a/net/wireless/Makefile b/net/wireless/Makefile
index a761670af31d..4c9e39f04ef8 100644
--- a/net/wireless/Makefile
+++ b/net/wireless/Makefile
@@ -10,7 +10,7 @@ obj-$(CONFIG_WEXT_SPY) += wext-spy.o
 obj-$(CONFIG_WEXT_PRIV) += wext-priv.o
 
 cfg80211-y += core.o sysfs.o radiotap.o util.o reg.o scan.o nl80211.o
-cfg80211-y += mlme.o ibss.o sme.o chan.o ethtool.o mesh.o ap.o trace.o
+cfg80211-y += mlme.o ibss.o sme.o chan.o ethtool.o mesh.o ap.o trace.o ocb.o
 cfg80211-$(CONFIG_CFG80211_DEBUGFS) += debugfs.o
 cfg80211-$(CONFIG_CFG80211_WEXT) += wext-compat.o wext-sme.o
 cfg80211-$(CONFIG_CFG80211_INTERNAL_REGDB) += regdb.o
diff --git a/net/wireless/chan.c b/net/wireless/chan.c
index 8f39e33e71bb..85506f1d0789 100644
--- a/net/wireless/chan.c
+++ b/net/wireless/chan.c
@@ -366,6 +366,7 @@ int cfg80211_chandef_dfs_required(struct wiphy *wiphy,
 
 		break;
 	case NL80211_IFTYPE_STATION:
+	case NL80211_IFTYPE_OCB:
 	case NL80211_IFTYPE_P2P_CLIENT:
 	case NL80211_IFTYPE_MONITOR:
 	case NL80211_IFTYPE_AP_VLAN:
@@ -892,6 +893,13 @@ cfg80211_get_chan_state(struct wireless_dev *wdev,
 				*radar_detect |= BIT(wdev->chandef.width);
 		}
 		return;
+	case NL80211_IFTYPE_OCB:
+		if (wdev->chandef.chan) {
+			*chan = wdev->chandef.chan;
+			*chanmode = CHAN_MODE_SHARED;
+			return;
+		}
+		break;
 	case NL80211_IFTYPE_MONITOR:
 	case NL80211_IFTYPE_AP_VLAN:
 	case NL80211_IFTYPE_WDS:
diff --git a/net/wireless/core.c b/net/wireless/core.c
index da4dcb65ade4..a4d27927aba2 100644
--- a/net/wireless/core.c
+++ b/net/wireless/core.c
@@ -869,6 +869,9 @@ void __cfg80211_leave(struct cfg80211_registered_device *rdev,
 	case NL80211_IFTYPE_P2P_GO:
 		__cfg80211_stop_ap(rdev, dev, true);
 		break;
+	case NL80211_IFTYPE_OCB:
+		__cfg80211_leave_ocb(rdev, dev);
+		break;
 	case NL80211_IFTYPE_WDS:
 		/* must be handled by mac80211/driver, has no APIs */
 		break;
diff --git a/net/wireless/core.h b/net/wireless/core.h
index 7e3a3cef7df9..61ee664cf2bd 100644
--- a/net/wireless/core.h
+++ b/net/wireless/core.h
@@ -290,6 +290,18 @@ int cfg80211_set_mesh_channel(struct cfg80211_registered_device *rdev,
 			      struct wireless_dev *wdev,
 			      struct cfg80211_chan_def *chandef);
 
+/* OCB */
+int __cfg80211_join_ocb(struct cfg80211_registered_device *rdev,
+			struct net_device *dev,
+			struct ocb_setup *setup);
+int cfg80211_join_ocb(struct cfg80211_registered_device *rdev,
+		      struct net_device *dev,
+		      struct ocb_setup *setup);
+int __cfg80211_leave_ocb(struct cfg80211_registered_device *rdev,
+			 struct net_device *dev);
+int cfg80211_leave_ocb(struct cfg80211_registered_device *rdev,
+		       struct net_device *dev);
+
 /* AP */
 int __cfg80211_stop_ap(struct cfg80211_registered_device *rdev,
 		       struct net_device *dev, bool notify);
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index f7d918858d32..1a31736914e5 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -885,6 +885,7 @@ static int nl80211_key_allowed(struct wireless_dev *wdev)
 			return -ENOLINK;
 		break;
 	case NL80211_IFTYPE_UNSPECIFIED:
+	case NL80211_IFTYPE_OCB:
 	case NL80211_IFTYPE_MONITOR:
 	case NL80211_IFTYPE_P2P_DEVICE:
 	case NL80211_IFTYPE_WDS:
@@ -8275,6 +8276,28 @@ static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
 	return -EINVAL;
 }
 
+static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
+{
+	struct cfg80211_registered_device *rdev = info->user_ptr[0];
+	struct net_device *dev = info->user_ptr[1];
+	struct ocb_setup setup = {};
+	int err;
+
+	err = nl80211_parse_chandef(rdev, info, &setup.chandef);
+	if (err)
+		return err;
+
+	return cfg80211_join_ocb(rdev, dev, &setup);
+}
+
+static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
+{
+	struct cfg80211_registered_device *rdev = info->user_ptr[0];
+	struct net_device *dev = info->user_ptr[1];
+
+	return cfg80211_leave_ocb(rdev, dev);
+}
+
 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
 {
 	struct cfg80211_registered_device *rdev = info->user_ptr[0];
@@ -10218,6 +10241,22 @@ static const struct genl_ops nl80211_ops[] = {
 		.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
 				  NL80211_FLAG_NEED_RTNL,
 	},
+	{
+		.cmd = NL80211_CMD_JOIN_OCB,
+		.doit = nl80211_join_ocb,
+		.policy = nl80211_policy,
+		.flags = GENL_ADMIN_PERM,
+		.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
+				  NL80211_FLAG_NEED_RTNL,
+	},
+	{
+		.cmd = NL80211_CMD_LEAVE_OCB,
+		.doit = nl80211_leave_ocb,
+		.policy = nl80211_policy,
+		.flags = GENL_ADMIN_PERM,
+		.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
+				  NL80211_FLAG_NEED_RTNL,
+	},
 #ifdef CONFIG_PM
 	{
 		.cmd = NL80211_CMD_GET_WOWLAN,
diff --git a/net/wireless/ocb.c b/net/wireless/ocb.c
new file mode 100644
index 000000000000..c00d4a792319
--- /dev/null
+++ b/net/wireless/ocb.c
@@ -0,0 +1,88 @@
+/*
+ * OCB mode implementation
+ *
+ * Copyright: (c) 2014 Czech Technical University in Prague
+ *            (c) 2014 Volkswagen Group Research
+ * Author:    Rostislav Lisovy <rostislav.lisovy@fel.cvut.cz>
+ * Funded by: Volkswagen Group Research
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/ieee80211.h>
+#include <net/cfg80211.h>
+#include "nl80211.h"
+#include "core.h"
+#include "rdev-ops.h"
+
+int __cfg80211_join_ocb(struct cfg80211_registered_device *rdev,
+			struct net_device *dev,
+			struct ocb_setup *setup)
+{
+	struct wireless_dev *wdev = dev->ieee80211_ptr;
+	int err;
+
+	ASSERT_WDEV_LOCK(wdev);
+
+	if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB)
+		return -EOPNOTSUPP;
+
+	if (WARN_ON(!setup->chandef.chan))
+		return -EINVAL;
+
+	err = rdev_join_ocb(rdev, dev, setup);
+	if (!err)
+		wdev->chandef = setup->chandef;
+
+	return err;
+}
+
+int cfg80211_join_ocb(struct cfg80211_registered_device *rdev,
+		      struct net_device *dev,
+		      struct ocb_setup *setup)
+{
+	struct wireless_dev *wdev = dev->ieee80211_ptr;
+	int err;
+
+	wdev_lock(wdev);
+	err = __cfg80211_join_ocb(rdev, dev, setup);
+	wdev_unlock(wdev);
+
+	return err;
+}
+
+int __cfg80211_leave_ocb(struct cfg80211_registered_device *rdev,
+			 struct net_device *dev)
+{
+	struct wireless_dev *wdev = dev->ieee80211_ptr;
+	int err;
+
+	ASSERT_WDEV_LOCK(wdev);
+
+	if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB)
+		return -EOPNOTSUPP;
+
+	if (!rdev->ops->leave_ocb)
+		return -EOPNOTSUPP;
+
+	err = rdev_leave_ocb(rdev, dev);
+	if (!err)
+		memset(&wdev->chandef, 0, sizeof(wdev->chandef));
+
+	return err;
+}
+
+int cfg80211_leave_ocb(struct cfg80211_registered_device *rdev,
+		       struct net_device *dev)
+{
+	struct wireless_dev *wdev = dev->ieee80211_ptr;
+	int err;
+
+	wdev_lock(wdev);
+	err = __cfg80211_leave_ocb(rdev, dev);
+	wdev_unlock(wdev);
+
+	return err;
+}
diff --git a/net/wireless/rdev-ops.h b/net/wireless/rdev-ops.h
index 71b1db3cc645..1b3864cd50ca 100644
--- a/net/wireless/rdev-ops.h
+++ b/net/wireless/rdev-ops.h
@@ -348,6 +348,27 @@ static inline int rdev_leave_mesh(struct cfg80211_registered_device *rdev,
 	return ret;
 }
 
+static inline int rdev_join_ocb(struct cfg80211_registered_device *rdev,
+				struct net_device *dev,
+				struct ocb_setup *setup)
+{
+	int ret;
+	trace_rdev_join_ocb(&rdev->wiphy, dev, setup);
+	ret = rdev->ops->join_ocb(&rdev->wiphy, dev, setup);
+	trace_rdev_return_int(&rdev->wiphy, ret);
+	return ret;
+}
+
+static inline int rdev_leave_ocb(struct cfg80211_registered_device *rdev,
+				 struct net_device *dev)
+{
+	int ret;
+	trace_rdev_leave_ocb(&rdev->wiphy, dev);
+	ret = rdev->ops->leave_ocb(&rdev->wiphy, dev);
+	trace_rdev_return_int(&rdev->wiphy, ret);
+	return ret;
+}
+
 static inline int rdev_change_bss(struct cfg80211_registered_device *rdev,
 				  struct net_device *dev,
 				  struct bss_parameters *params)
diff --git a/net/wireless/trace.h b/net/wireless/trace.h
index cdb2c2ef1ae1..277a85df910e 100644
--- a/net/wireless/trace.h
+++ b/net/wireless/trace.h
@@ -600,6 +600,11 @@ DEFINE_EVENT(wiphy_netdev_evt, rdev_leave_ibss,
 	TP_ARGS(wiphy, netdev)
 );
 
+DEFINE_EVENT(wiphy_netdev_evt, rdev_leave_ocb,
+	TP_PROTO(struct wiphy *wiphy, struct net_device *netdev),
+	TP_ARGS(wiphy, netdev)
+);
+
 DEFINE_EVENT(wiphy_netdev_evt, rdev_flush_pmksa,
 	TP_PROTO(struct wiphy *wiphy, struct net_device *netdev),
 	TP_ARGS(wiphy, netdev)
@@ -1316,6 +1321,22 @@ TRACE_EVENT(rdev_join_ibss,
 		  WIPHY_PR_ARG, NETDEV_PR_ARG, MAC_PR_ARG(bssid), __entry->ssid)
 );
 
+TRACE_EVENT(rdev_join_ocb,
+	TP_PROTO(struct wiphy *wiphy, struct net_device *netdev,
+		 const struct ocb_setup *setup),
+	TP_ARGS(wiphy, netdev, setup),
+	TP_STRUCT__entry(
+		WIPHY_ENTRY
+		NETDEV_ENTRY
+	),
+	TP_fast_assign(
+		WIPHY_ASSIGN;
+		NETDEV_ASSIGN;
+	),
+	TP_printk(WIPHY_PR_FMT ", " NETDEV_PR_FMT,
+		  WIPHY_PR_ARG, NETDEV_PR_ARG)
+);
+
 TRACE_EVENT(rdev_set_wiphy_params,
 	TP_PROTO(struct wiphy *wiphy, u32 changed),
 	TP_ARGS(wiphy, changed),
diff --git a/net/wireless/util.c b/net/wireless/util.c
index 5e233a577d0f..d0ac795445b7 100644
--- a/net/wireless/util.c
+++ b/net/wireless/util.c
@@ -442,7 +442,8 @@ int ieee80211_data_to_8023(struct sk_buff *skb, const u8 *addr,
 		break;
 	case cpu_to_le16(0):
 		if (iftype != NL80211_IFTYPE_ADHOC &&
-		    iftype != NL80211_IFTYPE_STATION)
+		    iftype != NL80211_IFTYPE_STATION &&
+		    iftype != NL80211_IFTYPE_OCB)
 				return -1;
 		break;
 	}
@@ -519,6 +520,7 @@ int ieee80211_data_from_8023(struct sk_buff *skb, const u8 *addr,
 		memcpy(hdr.addr3, skb->data, ETH_ALEN);
 		hdrlen = 24;
 		break;
+	case NL80211_IFTYPE_OCB:
 	case NL80211_IFTYPE_ADHOC:
 		/* DA SA BSSID */
 		memcpy(hdr.addr1, skb->data, ETH_ALEN);
@@ -937,6 +939,7 @@ int cfg80211_change_iface(struct cfg80211_registered_device *rdev,
 			if (dev->ieee80211_ptr->use_4addr)
 				break;
 			/* fall through */
+		case NL80211_IFTYPE_OCB:
 		case NL80211_IFTYPE_P2P_CLIENT:
 		case NL80211_IFTYPE_ADHOC:
 			dev->priv_flags |= IFF_DONT_BRIDGE;
-- 
cgit v1.2.3


From 239281f803e2efdb77d906ef296086b6917e5d71 Mon Sep 17 00:00:00 2001
From: Rostislav Lisovy <lisovy@gmail.com>
Date: Mon, 3 Nov 2014 10:33:19 +0100
Subject: mac80211: 802.11p OCB mode support

This patch adds 802.11p OCB (Outside the Context of a BSS) mode
support.

When communicating in OCB mode a mandatory wildcard BSSID
(48 '1' bits) is used.

The EDCA parameters handling function was changed to support
802.11p specific values.

The insertion of a newly discovered STAs is done in the similar way
as in the IBSS mode -- through the deferred insertion.

The OCB mode uses a periodic 'housekeeping task' for expiration of
disconnected STAs (in the similar manner as in the MESH mode).

New Kconfig option for verbose OCB debugging outputs is added.

Signed-off-by: Rostislav Lisovy <rostislav.lisovy@fel.cvut.cz>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
---
 include/net/mac80211.h     |   2 +
 net/mac80211/Kconfig       |  11 ++
 net/mac80211/Makefile      |   3 +-
 net/mac80211/cfg.c         |  13 +++
 net/mac80211/chan.c        |   1 +
 net/mac80211/debug.h       |  10 ++
 net/mac80211/driver-ops.h  |   3 +-
 net/mac80211/ieee80211_i.h |  29 ++++++
 net/mac80211/iface.c       |  20 +++-
 net/mac80211/ocb.c         | 250 +++++++++++++++++++++++++++++++++++++++++++++
 net/mac80211/rx.c          |  35 +++++++
 net/mac80211/tx.c          |  15 +++
 net/mac80211/util.c        |  30 ++++--
 net/mac80211/wme.c         |   4 +
 14 files changed, 417 insertions(+), 9 deletions(-)
 create mode 100644 net/mac80211/ocb.c

(limited to 'net/mac80211/chan.c')

diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index 03edbf6f6230..db54635d65c5 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -263,6 +263,7 @@ struct ieee80211_vif_chanctx_switch {
  * @BSS_CHANGED_BANDWIDTH: The bandwidth used by this interface changed,
  *	note that this is only called when it changes after the channel
  *	context had been assigned.
+ * @BSS_CHANGED_OCB: OCB join status changed
  */
 enum ieee80211_bss_change {
 	BSS_CHANGED_ASSOC		= 1<<0,
@@ -287,6 +288,7 @@ enum ieee80211_bss_change {
 	BSS_CHANGED_P2P_PS		= 1<<19,
 	BSS_CHANGED_BEACON_INFO		= 1<<20,
 	BSS_CHANGED_BANDWIDTH		= 1<<21,
+	BSS_CHANGED_OCB                 = 1<<22,
 
 	/* when adding here, make sure to change ieee80211_reconfig */
 };
diff --git a/net/mac80211/Kconfig b/net/mac80211/Kconfig
index 67cf8125d75d..75cc6801a431 100644
--- a/net/mac80211/Kconfig
+++ b/net/mac80211/Kconfig
@@ -176,6 +176,17 @@ config MAC80211_HT_DEBUG
 
 	  Do not select this option.
 
+config MAC80211_OCB_DEBUG
+	bool "Verbose OCB debugging"
+	depends on MAC80211_DEBUG_MENU
+	---help---
+	  Selecting this option causes mac80211 to print out
+	  very verbose OCB debugging messages. It should not
+	  be selected on production systems as those messages
+	  are remotely triggerable.
+
+	  Do not select this option.
+
 config MAC80211_IBSS_DEBUG
 	bool "Verbose IBSS debugging"
 	depends on MAC80211_DEBUG_MENU
diff --git a/net/mac80211/Makefile b/net/mac80211/Makefile
index 7273d2796dd1..e53671b1105e 100644
--- a/net/mac80211/Makefile
+++ b/net/mac80211/Makefile
@@ -27,7 +27,8 @@ mac80211-y := \
 	event.o \
 	chan.o \
 	trace.o mlme.o \
-	tdls.o
+	tdls.o \
+	ocb.o
 
 mac80211-$(CONFIG_MAC80211_LEDS) += led.o
 mac80211-$(CONFIG_MAC80211_DEBUGFS) += \
diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index 1e2afc95ad09..06185940cbb6 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -2019,6 +2019,17 @@ static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
 	return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev));
 }
 
+static int ieee80211_join_ocb(struct wiphy *wiphy, struct net_device *dev,
+			      struct ocb_setup *setup)
+{
+	return ieee80211_ocb_join(IEEE80211_DEV_TO_SUB_IF(dev), setup);
+}
+
+static int ieee80211_leave_ocb(struct wiphy *wiphy, struct net_device *dev)
+{
+	return ieee80211_ocb_leave(IEEE80211_DEV_TO_SUB_IF(dev));
+}
+
 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev,
 				    int rate[IEEE80211_NUM_BANDS])
 {
@@ -3693,6 +3704,8 @@ const struct cfg80211_ops mac80211_config_ops = {
 	.join_mesh = ieee80211_join_mesh,
 	.leave_mesh = ieee80211_leave_mesh,
 #endif
+	.join_ocb = ieee80211_join_ocb,
+	.leave_ocb = ieee80211_leave_ocb,
 	.change_bss = ieee80211_change_bss,
 	.set_txq_params = ieee80211_set_txq_params,
 	.set_monitor_channel = ieee80211_set_monitor_channel,
diff --git a/net/mac80211/chan.c b/net/mac80211/chan.c
index ff1f877e3b63..c7c514220298 100644
--- a/net/mac80211/chan.c
+++ b/net/mac80211/chan.c
@@ -675,6 +675,7 @@ void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local,
 		case NL80211_IFTYPE_ADHOC:
 		case NL80211_IFTYPE_WDS:
 		case NL80211_IFTYPE_MESH_POINT:
+		case NL80211_IFTYPE_OCB:
 			break;
 		default:
 			WARN_ON_ONCE(1);
diff --git a/net/mac80211/debug.h b/net/mac80211/debug.h
index 493d68061f0c..1956b3115dd5 100644
--- a/net/mac80211/debug.h
+++ b/net/mac80211/debug.h
@@ -2,6 +2,12 @@
 #define __MAC80211_DEBUG_H
 #include <net/cfg80211.h>
 
+#ifdef CONFIG_MAC80211_OCB_DEBUG
+#define MAC80211_OCB_DEBUG 1
+#else
+#define MAC80211_OCB_DEBUG 0
+#endif
+
 #ifdef CONFIG_MAC80211_IBSS_DEBUG
 #define MAC80211_IBSS_DEBUG 1
 #else
@@ -131,6 +137,10 @@ do {									\
 	_sdata_dbg(MAC80211_HT_DEBUG && net_ratelimit(),		\
 		   sdata, fmt, ##__VA_ARGS__)
 
+#define ocb_dbg(sdata, fmt, ...)					\
+	_sdata_dbg(MAC80211_OCB_DEBUG,					\
+		   sdata, fmt, ##__VA_ARGS__)
+
 #define ibss_dbg(sdata, fmt, ...)					\
 	_sdata_dbg(MAC80211_IBSS_DEBUG,					\
 		   sdata, fmt, ##__VA_ARGS__)
diff --git a/net/mac80211/driver-ops.h b/net/mac80211/driver-ops.h
index d1e128e5db41..8e1889ff2e53 100644
--- a/net/mac80211/driver-ops.h
+++ b/net/mac80211/driver-ops.h
@@ -214,7 +214,8 @@ static inline void drv_bss_info_changed(struct ieee80211_local *local,
 				    BSS_CHANGED_BEACON_ENABLED) &&
 			 sdata->vif.type != NL80211_IFTYPE_AP &&
 			 sdata->vif.type != NL80211_IFTYPE_ADHOC &&
-			 sdata->vif.type != NL80211_IFTYPE_MESH_POINT))
+			 sdata->vif.type != NL80211_IFTYPE_MESH_POINT &&
+			 sdata->vif.type != NL80211_IFTYPE_OCB))
 		return;
 
 	if (WARN_ON_ONCE(sdata->vif.type == NL80211_IFTYPE_P2P_DEVICE ||
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index eb425298fe69..fbd6bee9c959 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -576,6 +576,25 @@ struct ieee80211_if_ibss {
 	} state;
 };
 
+/**
+ * struct ieee80211_if_ocb - OCB mode state
+ *
+ * @housekeeping_timer: timer for periodic invocation of a housekeeping task
+ * @wrkq_flags: OCB deferred task action
+ * @incomplete_lock: delayed STA insertion lock
+ * @incomplete_stations: list of STAs waiting for delayed insertion
+ * @joined: indication if the interface is connected to an OCB network
+ */
+struct ieee80211_if_ocb {
+	struct timer_list housekeeping_timer;
+	unsigned long wrkq_flags;
+
+	spinlock_t incomplete_lock;
+	struct list_head incomplete_stations;
+
+	bool joined;
+};
+
 /**
  * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface
  *
@@ -869,6 +888,7 @@ struct ieee80211_sub_if_data {
 		struct ieee80211_if_managed mgd;
 		struct ieee80211_if_ibss ibss;
 		struct ieee80211_if_mesh mesh;
+		struct ieee80211_if_ocb ocb;
 		u32 mntr_flags;
 	} u;
 
@@ -1505,6 +1525,15 @@ int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata,
 int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata);
 void ieee80211_ibss_stop(struct ieee80211_sub_if_data *sdata);
 
+/* OCB code */
+void ieee80211_ocb_work(struct ieee80211_sub_if_data *sdata);
+void ieee80211_ocb_rx_no_sta(struct ieee80211_sub_if_data *sdata,
+			     const u8 *bssid, const u8 *addr, u32 supp_rates);
+void ieee80211_ocb_setup_sdata(struct ieee80211_sub_if_data *sdata);
+int ieee80211_ocb_join(struct ieee80211_sub_if_data *sdata,
+		       struct ocb_setup *setup);
+int ieee80211_ocb_leave(struct ieee80211_sub_if_data *sdata);
+
 /* mesh code */
 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata);
 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c
index d69e7532095f..6b631c049eba 100644
--- a/net/mac80211/iface.c
+++ b/net/mac80211/iface.c
@@ -258,6 +258,15 @@ static int ieee80211_check_concurrent_iface(struct ieee80211_sub_if_data *sdata,
 	/* we hold the RTNL here so can safely walk the list */
 	list_for_each_entry(nsdata, &local->interfaces, list) {
 		if (nsdata != sdata && ieee80211_sdata_running(nsdata)) {
+			/*
+			 * Only OCB and monitor mode may coexist
+			 */
+			if ((sdata->vif.type == NL80211_IFTYPE_OCB &&
+			     nsdata->vif.type != NL80211_IFTYPE_MONITOR) ||
+			    (sdata->vif.type != NL80211_IFTYPE_MONITOR &&
+			     nsdata->vif.type == NL80211_IFTYPE_OCB))
+				return -EBUSY;
+
 			/*
 			 * Allow only a single IBSS interface to be up at any
 			 * time. This is restricted because beacon distribution
@@ -1283,6 +1292,9 @@ static void ieee80211_iface_work(struct work_struct *work)
 			break;
 		ieee80211_mesh_work(sdata);
 		break;
+	case NL80211_IFTYPE_OCB:
+		ieee80211_ocb_work(sdata);
+		break;
 	default:
 		break;
 	}
@@ -1302,6 +1314,9 @@ static void ieee80211_recalc_smps_work(struct work_struct *work)
 static void ieee80211_setup_sdata(struct ieee80211_sub_if_data *sdata,
 				  enum nl80211_iftype type)
 {
+	static const u8 bssid_wildcard[ETH_ALEN] = {0xff, 0xff, 0xff,
+						    0xff, 0xff, 0xff};
+
 	/* clear type-dependent union */
 	memset(&sdata->u, 0, sizeof(sdata->u));
 
@@ -1354,7 +1369,8 @@ static void ieee80211_setup_sdata(struct ieee80211_sub_if_data *sdata,
 		ieee80211_sta_setup_sdata(sdata);
 		break;
 	case NL80211_IFTYPE_OCB:
-		/* to be implemented in the future */
+		sdata->vif.bss_conf.bssid = bssid_wildcard;
+		ieee80211_ocb_setup_sdata(sdata);
 		break;
 	case NL80211_IFTYPE_ADHOC:
 		sdata->vif.bss_conf.bssid = sdata->u.ibss.bssid;
@@ -1403,6 +1419,7 @@ static int ieee80211_runtime_change_iftype(struct ieee80211_sub_if_data *sdata,
 	case NL80211_IFTYPE_AP:
 	case NL80211_IFTYPE_STATION:
 	case NL80211_IFTYPE_ADHOC:
+	case NL80211_IFTYPE_OCB:
 		/*
 		 * Could maybe also all others here?
 		 * Just not sure how that interacts
@@ -1418,6 +1435,7 @@ static int ieee80211_runtime_change_iftype(struct ieee80211_sub_if_data *sdata,
 	case NL80211_IFTYPE_AP:
 	case NL80211_IFTYPE_STATION:
 	case NL80211_IFTYPE_ADHOC:
+	case NL80211_IFTYPE_OCB:
 		/*
 		 * Could probably support everything
 		 * but WDS here (WDS do_open can fail
diff --git a/net/mac80211/ocb.c b/net/mac80211/ocb.c
new file mode 100644
index 000000000000..358d5f9d8207
--- /dev/null
+++ b/net/mac80211/ocb.c
@@ -0,0 +1,250 @@
+/*
+ * OCB mode implementation
+ *
+ * Copyright: (c) 2014 Czech Technical University in Prague
+ *            (c) 2014 Volkswagen Group Research
+ * Author:    Rostislav Lisovy <rostislav.lisovy@fel.cvut.cz>
+ * Funded by: Volkswagen Group Research
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/delay.h>
+#include <linux/if_ether.h>
+#include <linux/skbuff.h>
+#include <linux/if_arp.h>
+#include <linux/etherdevice.h>
+#include <linux/rtnetlink.h>
+#include <net/mac80211.h>
+#include <asm/unaligned.h>
+
+#include "ieee80211_i.h"
+#include "driver-ops.h"
+#include "rate.h"
+
+#define IEEE80211_OCB_HOUSEKEEPING_INTERVAL		(60 * HZ)
+#define IEEE80211_OCB_PEER_INACTIVITY_LIMIT		(240 * HZ)
+#define IEEE80211_OCB_MAX_STA_ENTRIES			128
+
+/**
+ * enum ocb_deferred_task_flags - mac80211 OCB deferred tasks
+ * @OCB_WORK_HOUSEKEEPING: run the periodic OCB housekeeping tasks
+ *
+ * These flags are used in @wrkq_flags field of &struct ieee80211_if_ocb
+ */
+enum ocb_deferred_task_flags {
+	OCB_WORK_HOUSEKEEPING,
+};
+
+void ieee80211_ocb_rx_no_sta(struct ieee80211_sub_if_data *sdata,
+			     const u8 *bssid, const u8 *addr,
+			     u32 supp_rates)
+{
+	struct ieee80211_if_ocb *ifocb = &sdata->u.ocb;
+	struct ieee80211_local *local = sdata->local;
+	struct ieee80211_chanctx_conf *chanctx_conf;
+	struct ieee80211_supported_band *sband;
+	enum nl80211_bss_scan_width scan_width;
+	struct sta_info *sta;
+	int band;
+
+	/* XXX: Consider removing the least recently used entry and
+	 *      allow new one to be added.
+	 */
+	if (local->num_sta >= IEEE80211_OCB_MAX_STA_ENTRIES) {
+		net_info_ratelimited("%s: No room for a new OCB STA entry %pM\n",
+				     sdata->name, addr);
+		return;
+	}
+
+	ocb_dbg(sdata, "Adding new OCB station %pM\n", addr);
+
+	rcu_read_lock();
+	chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
+	if (WARN_ON_ONCE(!chanctx_conf)) {
+		rcu_read_unlock();
+		return;
+	}
+	band = chanctx_conf->def.chan->band;
+	scan_width = cfg80211_chandef_to_scan_width(&chanctx_conf->def);
+	rcu_read_unlock();
+
+	sta = sta_info_alloc(sdata, addr, GFP_ATOMIC);
+	if (!sta)
+		return;
+
+	sta->last_rx = jiffies;
+
+	/* Add only mandatory rates for now */
+	sband = local->hw.wiphy->bands[band];
+	sta->sta.supp_rates[band] =
+		ieee80211_mandatory_rates(sband, scan_width);
+
+	spin_lock(&ifocb->incomplete_lock);
+	list_add(&sta->list, &ifocb->incomplete_stations);
+	spin_unlock(&ifocb->incomplete_lock);
+	ieee80211_queue_work(&local->hw, &sdata->work);
+}
+
+static struct sta_info *ieee80211_ocb_finish_sta(struct sta_info *sta)
+	__acquires(RCU)
+{
+	struct ieee80211_sub_if_data *sdata = sta->sdata;
+	u8 addr[ETH_ALEN];
+
+	memcpy(addr, sta->sta.addr, ETH_ALEN);
+
+	ocb_dbg(sdata, "Adding new IBSS station %pM (dev=%s)\n",
+		addr, sdata->name);
+
+	sta_info_move_state(sta, IEEE80211_STA_AUTH);
+	sta_info_move_state(sta, IEEE80211_STA_ASSOC);
+	sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
+
+	rate_control_rate_init(sta);
+
+	/* If it fails, maybe we raced another insertion? */
+	if (sta_info_insert_rcu(sta))
+		return sta_info_get(sdata, addr);
+	return sta;
+}
+
+static void ieee80211_ocb_housekeeping(struct ieee80211_sub_if_data *sdata)
+{
+	struct ieee80211_if_ocb *ifocb = &sdata->u.ocb;
+
+	ocb_dbg(sdata, "Running ocb housekeeping\n");
+
+	ieee80211_sta_expire(sdata, IEEE80211_OCB_PEER_INACTIVITY_LIMIT);
+
+	mod_timer(&ifocb->housekeeping_timer,
+		  round_jiffies(jiffies + IEEE80211_OCB_HOUSEKEEPING_INTERVAL));
+}
+
+void ieee80211_ocb_work(struct ieee80211_sub_if_data *sdata)
+{
+	struct ieee80211_if_ocb *ifocb = &sdata->u.ocb;
+	struct sta_info *sta;
+
+	if (ifocb->joined != true)
+		return;
+
+	sdata_lock(sdata);
+
+	spin_lock_bh(&ifocb->incomplete_lock);
+	while (!list_empty(&ifocb->incomplete_stations)) {
+		sta = list_first_entry(&ifocb->incomplete_stations,
+				       struct sta_info, list);
+		list_del(&sta->list);
+		spin_unlock_bh(&ifocb->incomplete_lock);
+
+		ieee80211_ocb_finish_sta(sta);
+		rcu_read_unlock();
+		spin_lock_bh(&ifocb->incomplete_lock);
+	}
+	spin_unlock_bh(&ifocb->incomplete_lock);
+
+	if (test_and_clear_bit(OCB_WORK_HOUSEKEEPING, &ifocb->wrkq_flags))
+		ieee80211_ocb_housekeeping(sdata);
+
+	sdata_unlock(sdata);
+}
+
+static void ieee80211_ocb_housekeeping_timer(unsigned long data)
+{
+	struct ieee80211_sub_if_data *sdata = (void *)data;
+	struct ieee80211_local *local = sdata->local;
+	struct ieee80211_if_ocb *ifocb = &sdata->u.ocb;
+
+	set_bit(OCB_WORK_HOUSEKEEPING, &ifocb->wrkq_flags);
+
+	ieee80211_queue_work(&local->hw, &sdata->work);
+}
+
+void ieee80211_ocb_setup_sdata(struct ieee80211_sub_if_data *sdata)
+{
+	struct ieee80211_if_ocb *ifocb = &sdata->u.ocb;
+
+	setup_timer(&ifocb->housekeeping_timer,
+		    ieee80211_ocb_housekeeping_timer,
+		    (unsigned long)sdata);
+	INIT_LIST_HEAD(&ifocb->incomplete_stations);
+	spin_lock_init(&ifocb->incomplete_lock);
+}
+
+int ieee80211_ocb_join(struct ieee80211_sub_if_data *sdata,
+		       struct ocb_setup *setup)
+{
+	struct ieee80211_local *local = sdata->local;
+	struct ieee80211_if_ocb *ifocb = &sdata->u.ocb;
+	u32 changed = BSS_CHANGED_OCB;
+	int err;
+
+	if (ifocb->joined == true)
+		return -EINVAL;
+
+	sdata->flags |= IEEE80211_SDATA_OPERATING_GMODE;
+	sdata->smps_mode = IEEE80211_SMPS_OFF;
+	sdata->needed_rx_chains = sdata->local->rx_chains;
+
+	mutex_lock(&sdata->local->mtx);
+	err = ieee80211_vif_use_channel(sdata, &setup->chandef,
+					IEEE80211_CHANCTX_SHARED);
+	mutex_unlock(&sdata->local->mtx);
+	if (err)
+		return err;
+
+	ieee80211_bss_info_change_notify(sdata, changed);
+
+	ifocb->joined = true;
+
+	set_bit(OCB_WORK_HOUSEKEEPING, &ifocb->wrkq_flags);
+	ieee80211_queue_work(&local->hw, &sdata->work);
+
+	netif_carrier_on(sdata->dev);
+	return 0;
+}
+
+int ieee80211_ocb_leave(struct ieee80211_sub_if_data *sdata)
+{
+	struct ieee80211_if_ocb *ifocb = &sdata->u.ocb;
+	struct ieee80211_local *local = sdata->local;
+	struct sta_info *sta;
+
+	ifocb->joined = false;
+	sta_info_flush(sdata);
+
+	spin_lock_bh(&ifocb->incomplete_lock);
+	while (!list_empty(&ifocb->incomplete_stations)) {
+		sta = list_first_entry(&ifocb->incomplete_stations,
+				       struct sta_info, list);
+		list_del(&sta->list);
+		spin_unlock_bh(&ifocb->incomplete_lock);
+
+		sta_info_free(local, sta);
+		spin_lock_bh(&ifocb->incomplete_lock);
+	}
+	spin_unlock_bh(&ifocb->incomplete_lock);
+
+	netif_carrier_off(sdata->dev);
+	clear_bit(SDATA_STATE_OFFCHANNEL, &sdata->state);
+	ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_OCB);
+
+	mutex_lock(&sdata->local->mtx);
+	ieee80211_vif_release_channel(sdata);
+	mutex_unlock(&sdata->local->mtx);
+
+	skb_queue_purge(&sdata->skb_queue);
+
+	del_timer_sync(&sdata->u.ocb.housekeeping_timer);
+	/* If the timer fired while we waited for it, it will have
+	 * requeued the work. Now the work will be running again
+	 * but will not rearm the timer again because it checks
+	 * whether we are connected to the network or not -- at this
+	 * point we shouldn't be anymore.
+	 */
+
+	return 0;
+}
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index b04ca4049c95..bc63aa0c5401 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -1032,6 +1032,7 @@ ieee80211_rx_h_check(struct ieee80211_rx_data *rx)
 		      ieee80211_is_pspoll(hdr->frame_control)) &&
 		     rx->sdata->vif.type != NL80211_IFTYPE_ADHOC &&
 		     rx->sdata->vif.type != NL80211_IFTYPE_WDS &&
+		     rx->sdata->vif.type != NL80211_IFTYPE_OCB &&
 		     (!rx->sta || !test_sta_flag(rx->sta, WLAN_STA_ASSOC)))) {
 		/*
 		 * accept port control frames from the AP even when it's not
@@ -1272,6 +1273,12 @@ ieee80211_rx_h_sta_process(struct ieee80211_rx_data *rx)
 				sta->last_rx_rate_vht_nss = status->vht_nss;
 			}
 		}
+	} else if (rx->sdata->vif.type == NL80211_IFTYPE_OCB) {
+		u8 *bssid = ieee80211_get_bssid(hdr, rx->skb->len,
+						NL80211_IFTYPE_OCB);
+		/* OCB uses wild-card BSSID */
+		if (is_broadcast_ether_addr(bssid))
+			sta->last_rx = jiffies;
 	} else if (!is_multicast_ether_addr(hdr->addr1)) {
 		/*
 		 * Mesh beacons will update last_rx when if they are found to
@@ -2820,6 +2827,7 @@ ieee80211_rx_h_mgmt(struct ieee80211_rx_data *rx)
 
 	if (!ieee80211_vif_is_mesh(&sdata->vif) &&
 	    sdata->vif.type != NL80211_IFTYPE_ADHOC &&
+	    sdata->vif.type != NL80211_IFTYPE_OCB &&
 	    sdata->vif.type != NL80211_IFTYPE_STATION)
 		return RX_DROP_MONITOR;
 
@@ -3130,6 +3138,33 @@ static bool prepare_for_handlers(struct ieee80211_rx_data *rx,
 						 BIT(rate_idx));
 		}
 		break;
+	case NL80211_IFTYPE_OCB:
+		if (!bssid)
+			return false;
+		if (ieee80211_is_beacon(hdr->frame_control)) {
+			return false;
+		} else if (!is_broadcast_ether_addr(bssid)) {
+			ocb_dbg(sdata, "BSSID mismatch in OCB mode!\n");
+			return false;
+		} else if (!multicast &&
+			   !ether_addr_equal(sdata->dev->dev_addr,
+					     hdr->addr1)) {
+			/* if we are in promisc mode we also accept
+			 * packets not destined for us
+			 */
+			if (!(sdata->dev->flags & IFF_PROMISC))
+				return false;
+			rx->flags &= ~IEEE80211_RX_RA_MATCH;
+		} else if (!rx->sta) {
+			int rate_idx;
+			if (status->flag & RX_FLAG_HT)
+				rate_idx = 0; /* TODO: HT rates */
+			else
+				rate_idx = status->rate_idx;
+			ieee80211_ocb_rx_no_sta(sdata, bssid, hdr->addr2,
+						BIT(rate_idx));
+		}
+		break;
 	case NL80211_IFTYPE_MESH_POINT:
 		if (!multicast &&
 		    !ether_addr_equal(sdata->vif.addr, hdr->addr1)) {
diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c
index 900632a250ec..3ffd91f295a6 100644
--- a/net/mac80211/tx.c
+++ b/net/mac80211/tx.c
@@ -296,6 +296,9 @@ ieee80211_tx_h_check_assoc(struct ieee80211_tx_data *tx)
 		 */
 		return TX_DROP;
 
+	if (tx->sdata->vif.type == NL80211_IFTYPE_OCB)
+		return TX_CONTINUE;
+
 	if (tx->sdata->vif.type == NL80211_IFTYPE_WDS)
 		return TX_CONTINUE;
 
@@ -2013,6 +2016,17 @@ netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
 			goto fail_rcu;
 		band = chanctx_conf->def.chan->band;
 		break;
+	case NL80211_IFTYPE_OCB:
+		/* DA SA BSSID */
+		memcpy(hdr.addr1, skb->data, ETH_ALEN);
+		memcpy(hdr.addr2, skb->data + ETH_ALEN, ETH_ALEN);
+		eth_broadcast_addr(hdr.addr3);
+		hdrlen = 24;
+		chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
+		if (!chanctx_conf)
+			goto fail_rcu;
+		band = chanctx_conf->def.chan->band;
+		break;
 	case NL80211_IFTYPE_ADHOC:
 		/* DA SA BSSID */
 		memcpy(hdr.addr1, skb->data, ETH_ALEN);
@@ -2057,6 +2071,7 @@ netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
 	 * EAPOL frames from the local station.
 	 */
 	if (unlikely(!ieee80211_vif_is_mesh(&sdata->vif) &&
+		     (sdata->vif.type != NL80211_IFTYPE_OCB) &&
 		     !multicast && !authorized &&
 		     (cpu_to_be16(ethertype) != sdata->control_port_protocol ||
 		      !ether_addr_equal(sdata->vif.addr, skb->data + ETH_ALEN)))) {
diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index d7d69c89ff34..91e16b4d4e3c 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -1101,6 +1101,7 @@ void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata,
 	struct ieee80211_chanctx_conf *chanctx_conf;
 	int ac;
 	bool use_11b, enable_qos;
+	bool is_ocb; /* Use another EDCA parameters if dot11OCBActivated=true */
 	int aCWmin, aCWmax;
 
 	if (!local->ops->conf_tx)
@@ -1125,6 +1126,8 @@ void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata,
 	 */
 	enable_qos = (sdata->vif.type != NL80211_IFTYPE_STATION);
 
+	is_ocb = (sdata->vif.type == NL80211_IFTYPE_OCB);
+
 	/* Set defaults according to 802.11-2007 Table 7-37 */
 	aCWmax = 1023;
 	if (use_11b)
@@ -1146,7 +1149,10 @@ void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata,
 				qparam.cw_max = aCWmax;
 				qparam.cw_min = aCWmin;
 				qparam.txop = 0;
-				qparam.aifs = 7;
+				if (is_ocb)
+					qparam.aifs = 9;
+				else
+					qparam.aifs = 7;
 				break;
 			/* never happens but let's not leave undefined */
 			default:
@@ -1154,21 +1160,32 @@ void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata,
 				qparam.cw_max = aCWmax;
 				qparam.cw_min = aCWmin;
 				qparam.txop = 0;
-				qparam.aifs = 3;
+				if (is_ocb)
+					qparam.aifs = 6;
+				else
+					qparam.aifs = 3;
 				break;
 			case IEEE80211_AC_VI:
 				qparam.cw_max = aCWmin;
 				qparam.cw_min = (aCWmin + 1) / 2 - 1;
-				if (use_11b)
+				if (is_ocb)
+					qparam.txop = 0;
+				else if (use_11b)
 					qparam.txop = 6016/32;
 				else
 					qparam.txop = 3008/32;
-				qparam.aifs = 2;
+
+				if (is_ocb)
+					qparam.aifs = 3;
+				else
+					qparam.aifs = 2;
 				break;
 			case IEEE80211_AC_VO:
 				qparam.cw_max = (aCWmin + 1) / 2 - 1;
 				qparam.cw_min = (aCWmin + 1) / 4 - 1;
-				if (use_11b)
+				if (is_ocb)
+					qparam.txop = 0;
+				else if (use_11b)
 					qparam.txop = 3264/32;
 				else
 					qparam.txop = 1504/32;
@@ -1842,7 +1859,8 @@ int ieee80211_reconfig(struct ieee80211_local *local)
 			sdata_unlock(sdata);
 			break;
 		case NL80211_IFTYPE_OCB:
-			/* to be implemented in the future */
+			changed |= BSS_CHANGED_OCB;
+			ieee80211_bss_info_change_notify(sdata, changed);
 			break;
 		case NL80211_IFTYPE_ADHOC:
 			changed |= BSS_CHANGED_IBSS;
diff --git a/net/mac80211/wme.c b/net/mac80211/wme.c
index d3c5672d775f..fdf52db95b33 100644
--- a/net/mac80211/wme.c
+++ b/net/mac80211/wme.c
@@ -148,6 +148,10 @@ u16 ieee80211_select_queue(struct ieee80211_sub_if_data *sdata,
 	case NL80211_IFTYPE_ADHOC:
 		ra = skb->data;
 		break;
+	case NL80211_IFTYPE_OCB:
+		/* all stations are required to support WME */
+		qos = true;
+		break;
 	default:
 		break;
 	}
-- 
cgit v1.2.3


From 2967e031d4d737d9cc8252d878a17924d7b704f0 Mon Sep 17 00:00:00 2001
From: Felix Fietkau <nbd@openwrt.org>
Date: Mon, 24 Nov 2014 18:12:16 +0100
Subject: mac80211: copy chandef from AP vif to VLANs

Instead of keeping track of all those special cases where
VLAN interfaces have no bss_conf.chandef, just make sure
they have the same as the AP interface they belong to.

Among others, this fixes a crash getting a VLAN's channel
from userspace since a NULL channel is returned as a good
result (return value 0) for VLANs since the commit below.

Cc: stable@vger.kernel.org [3.18 only]
Fixes: c12bc4885f4b3 ("mac80211: return the vif's chandef in ieee80211_cfg_get_channel()")
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
[rewrite commit log]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
---
 net/mac80211/chan.c  | 23 +++++++++++++++++++----
 net/mac80211/iface.c |  1 +
 2 files changed, 20 insertions(+), 4 deletions(-)

(limited to 'net/mac80211/chan.c')

diff --git a/net/mac80211/chan.c b/net/mac80211/chan.c
index c7c514220298..5d6dae9e4aac 100644
--- a/net/mac80211/chan.c
+++ b/net/mac80211/chan.c
@@ -932,6 +932,21 @@ ieee80211_vif_chanctx_reservation_complete(struct ieee80211_sub_if_data *sdata)
 	}
 }
 
+static void
+ieee80211_vif_update_chandef(struct ieee80211_sub_if_data *sdata,
+			     const struct cfg80211_chan_def *chandef)
+{
+	struct ieee80211_sub_if_data *vlan;
+
+	sdata->vif.bss_conf.chandef = *chandef;
+
+	if (sdata->vif.type != NL80211_IFTYPE_AP)
+		return;
+
+	list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
+		vlan->vif.bss_conf.chandef = *chandef;
+}
+
 static int
 ieee80211_vif_use_reserved_reassign(struct ieee80211_sub_if_data *sdata)
 {
@@ -994,7 +1009,7 @@ ieee80211_vif_use_reserved_reassign(struct ieee80211_sub_if_data *sdata)
 	if (sdata->vif.bss_conf.chandef.width != sdata->reserved_chandef.width)
 		changed = BSS_CHANGED_BANDWIDTH;
 
-	sdata->vif.bss_conf.chandef = sdata->reserved_chandef;
+	ieee80211_vif_update_chandef(sdata, &sdata->reserved_chandef);
 
 	if (changed)
 		ieee80211_bss_info_change_notify(sdata, changed);
@@ -1336,7 +1351,7 @@ static int ieee80211_vif_use_reserved_switch(struct ieee80211_local *local)
 			    sdata->reserved_chandef.width)
 				changed = BSS_CHANGED_BANDWIDTH;
 
-			sdata->vif.bss_conf.chandef = sdata->reserved_chandef;
+			ieee80211_vif_update_chandef(sdata, &sdata->reserved_chandef);
 			if (changed)
 				ieee80211_bss_info_change_notify(sdata,
 								 changed);
@@ -1507,7 +1522,7 @@ int ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata,
 		goto out;
 	}
 
-	sdata->vif.bss_conf.chandef = *chandef;
+	ieee80211_vif_update_chandef(sdata, chandef);
 
 	ret = ieee80211_assign_vif_chanctx(sdata, ctx);
 	if (ret) {
@@ -1649,7 +1664,7 @@ int ieee80211_vif_change_bandwidth(struct ieee80211_sub_if_data *sdata,
 		break;
 	}
 
-	sdata->vif.bss_conf.chandef = *chandef;
+	ieee80211_vif_update_chandef(sdata, chandef);
 
 	ieee80211_recalc_chanctx_chantype(local, ctx);
 
diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c
index 82473d909bb6..96c4572c023e 100644
--- a/net/mac80211/iface.c
+++ b/net/mac80211/iface.c
@@ -520,6 +520,7 @@ int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up)
 		sdata->vif.cab_queue = master->vif.cab_queue;
 		memcpy(sdata->vif.hw_queue, master->vif.hw_queue,
 		       sizeof(sdata->vif.hw_queue));
+		sdata->vif.bss_conf.chandef = master->vif.bss_conf.chandef;
 		break;
 		}
 	case NL80211_IFTYPE_AP:
-- 
cgit v1.2.3