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Date: Fri, 30 May 2014 18:56:24 +0200
From: Rostislav Lisovy <lisovy@...il.com>
To: Johannes Berg <johannes@...solutions.net>,
"John W. Linville" <linville@...driver.com>,
linux-wireless@...r.kernel.org, linux-kernel@...r.kernel.org
Cc: Michal Sojka <sojkam1@....cvut.cz>, s.sander@...dsys.de,
jan-niklas.meier@...kswagen.de,
Rostislav Lisovy <rostislav.lisovy@....cvut.cz>
Subject: [RFC 4/4] mac80211: OCB mode interface configuration
Add functions necessary for OCB mode interface configuration
used in interface bring-up and when 'joining' the network.
Signed-off-by: Rostislav Lisovy <rostislav.lisovy@....cvut.cz>
---
net/mac80211/Makefile | 3 ++-
net/mac80211/cfg.c | 22 ++++++++++++++++++++++
net/mac80211/chan.c | 1 +
net/mac80211/driver-ops.h | 3 ++-
net/mac80211/ieee80211_i.h | 3 +++
net/mac80211/iface.c | 22 ++++++++++++++++++++++
net/mac80211/ocb.c | 22 ++++++++++++++++++++++
net/mac80211/util.c | 5 +++++
8 files changed, 79 insertions(+), 2 deletions(-)
create mode 100644 net/mac80211/ocb.c
diff --git a/net/mac80211/Makefile b/net/mac80211/Makefile
index 1e46ffa..1b9d37f 100644
--- a/net/mac80211/Makefile
+++ b/net/mac80211/Makefile
@@ -26,7 +26,8 @@ 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 7c56445..ac15b59 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -228,6 +228,7 @@ 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;
@@ -2032,6 +2033,26 @@ static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
}
#endif
+static int ieee80211_join_ocb(struct wiphy *wiphy, struct net_device *dev,
+ struct ocb_setup *setup)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ int err;
+
+ 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_EXCLUSIVE);
+ mutex_unlock(&sdata->local->mtx);
+ if (err)
+ return err;
+
+ return ieee80211_start_ocb(sdata);
+}
+
static int ieee80211_change_bss(struct wiphy *wiphy,
struct net_device *dev,
struct bss_parameters *params)
@@ -3768,6 +3789,7 @@ const struct cfg80211_ops mac80211_config_ops = {
.join_mesh = ieee80211_join_mesh,
.leave_mesh = ieee80211_leave_mesh,
#endif
+ .join_ocb = ieee80211_join_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 3702d64..62002de 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/driver-ops.h b/net/mac80211/driver-ops.h
index df1d502..ccf770d 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 4668ce9..002fd8f 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -1421,6 +1421,9 @@ 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 */
+int ieee80211_start_ocb(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 79fc988..23e573e 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,
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
* cannot work properly if both are in the same IBSS.
@@ -519,6 +528,7 @@ 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:
@@ -618,6 +628,9 @@ int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up)
ieee80211_configure_filter(local);
} else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) {
local->fif_probe_req++;
+ } else if (sdata->vif.type == NL80211_IFTYPE_OCB) {
+ local->fif_other_bss++;
+ ieee80211_configure_filter(local);
}
if (sdata->vif.type != NL80211_IFTYPE_P2P_DEVICE)
@@ -629,6 +642,7 @@ 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:
@@ -1274,6 +1288,9 @@ 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 u8 bssid_wildcard[ETH_ALEN] = { 0xff, 0xff, 0xff,
+ 0xff, 0xff, 0xff };
+
/* clear type-dependent union */
memset(&sdata->u, 0, sizeof(sdata->u));
@@ -1324,6 +1341,9 @@ 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:
+ sdata->vif.bss_conf.bssid = bssid_wildcard;
+ break;
case NL80211_IFTYPE_ADHOC:
sdata->vif.bss_conf.bssid = sdata->u.ibss.bssid;
ieee80211_ibss_setup_sdata(sdata);
@@ -1371,6 +1391,7 @@ 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
@@ -1386,6 +1407,7 @@ 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 0000000..2dd9723
--- /dev/null
+++ b/net/mac80211/ocb.c
@@ -0,0 +1,22 @@
+ /* OCB mode implementation
+ * Copyright 2014, Czech Technical University in Prague, Rostislav Lisovy
+ *
+ * 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 "ieee80211_i.h"
+
+int ieee80211_start_ocb(struct ieee80211_sub_if_data *sdata)
+{
+ u32 changed = BSS_CHANGED_BEACON_ENABLED;
+
+ sdata->vif.bss_conf.enable_beacon = false;
+ ieee80211_bss_info_change_notify(sdata, changed);
+
+ /* MORE TO BE DONE ... */
+
+ netif_carrier_on(sdata->dev);
+ return 0;
+}
diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index 7e0dd4b..bf4fd61 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -1689,6 +1689,11 @@ int ieee80211_reconfig(struct ieee80211_local *local)
ieee80211_bss_info_change_notify(sdata, changed);
sdata_unlock(sdata);
break;
+ case NL80211_IFTYPE_OCB:
+ changed |= BSS_CHANGED_IBSS |
+ BSS_CHANGED_BEACON_ENABLED;
+ ieee80211_bss_info_change_notify(sdata, changed);
+ break;
case NL80211_IFTYPE_ADHOC:
changed |= BSS_CHANGED_IBSS;
/* fall through */
--
2.0.0.rc4
--
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