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authorRostislav Lisovy <lisovy@gmail.com>2014-11-03 12:33:18 +0300
committerJohannes Berg <johannes.berg@intel.com>2014-11-04 15:18:17 +0300
commit6e0bd6c35b021dc73a81ebd1ef79761233c48b50 (patch)
treef3da02d8006a5ff98f3dd33a37dc1eddafd7b85c /net/wireless/ocb.c
parent5b3dc42b1b0db0264bbbe4ae44c15ab97bfd1e93 (diff)
downloadlinux-6e0bd6c35b021dc73a81ebd1ef79761233c48b50.tar.xz
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>
Diffstat (limited to 'net/wireless/ocb.c')
-rw-r--r--net/wireless/ocb.c88
1 files changed, 88 insertions, 0 deletions
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;
+}