Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lowpan/lowpan

Documentation/networking/00-INDEX

@@ -60,6 +60,8 @@ framerelay.txt
 	- info on using Frame Relay/Data Link Connection Identifier (DLCI).
 generic_netlink.txt
 	- info on Generic Netlink
+ieee802154.txt
+	- Linux IEEE 802.15.4 implementation, API and drivers
 ip-sysctl.txt
 	- /proc/sys/net/ipv4/* variables
 ip_dynaddr.txt

Documentation/networking/ieee802154.txt

@@ -69,7 +69,7 @@ We provide an example of simple HardMAC driver at drivers/ieee802154/fakehard.c
 SoftMAC
 =======
 
-We are going to provide intermediate layer impelementing IEEE 802.15.4 MAC
+We are going to provide intermediate layer implementing IEEE 802.15.4 MAC
 in software. This is currently WIP.
 
 See header include/net/ieee802154/mac802154.h and several drivers in

drivers/ieee802154/fakehard.c

@@ -26,11 +26,17 @@
 #include <linux/skbuff.h>
 #include <linux/if_arp.h>
 
-#include <net/ieee802154/af_ieee802154.h>
-#include <net/ieee802154/netdevice.h>
-#include <net/ieee802154/mac_def.h>
-#include <net/ieee802154/nl802154.h>
+#include <net/af_ieee802154.h>
+#include <net/ieee802154_netdev.h>
+#include <net/ieee802154.h>
+#include <net/nl802154.h>
 
+/**
+ * fake_get_pan_id - Retrieve the PAN ID of the device.
+ * @dev: The network device to retrieve the PAN of.
+ *
+ * Return the ID of the PAN from the PIB.
+ */
 static u16 fake_get_pan_id(struct net_device *dev)
 {
 	BUG_ON(dev->type != ARPHRD_IEEE802154);
@@ -38,6 +44,14 @@ static u16 fake_get_pan_id(struct net_device *dev)
 	return 0xeba1;
 }
 
+/**
+ * fake_get_short_addr - Retrieve the short address of the device.
+ * @dev: The network device to retrieve the short address of.
+ *
+ * Returns the IEEE 802.15.4 short-form address cached for this
+ * device. If the device has not yet had a short address assigned
+ * then this should return 0xFFFF to indicate a lack of association.
+ */
 static u16 fake_get_short_addr(struct net_device *dev)
 {
 	BUG_ON(dev->type != ARPHRD_IEEE802154);
@@ -45,6 +59,19 @@ static u16 fake_get_short_addr(struct net_device *dev)
 	return 0x1;
 }
 
+/**
+ * fake_get_dsn - Retrieve the DSN of the device.
+ * @dev: The network device to retrieve the DSN for.
+ *
+ * Returns the IEEE 802.15.4 DSN for the network device.
+ * The DSN is the sequence number which will be added to each
+ * packet or MAC command frame by the MAC during transmission.
+ *
+ * DSN means 'Data Sequence Number'.
+ *
+ * Note: This is in section 7.2.1.2 of the IEEE 802.15.4-2006
+ *       document.
+ */
 static u8 fake_get_dsn(struct net_device *dev)
 {
 	BUG_ON(dev->type != ARPHRD_IEEE802154);
@@ -52,6 +79,19 @@ static u8 fake_get_dsn(struct net_device *dev)
 	return 0x00; /* DSN are implemented in HW, so return just 0 */
 }
 
+/**
+ * fake_get_bsn - Retrieve the BSN of the device.
+ * @dev: The network device to retrieve the BSN for.
+ *
+ * Returns the IEEE 802.15.4 BSN for the network device.
+ * The BSN is the sequence number which will be added to each
+ * beacon frame sent by the MAC.
+ *
+ * BSN means 'Beacon Sequence Number'.
+ *
+ * Note: This is in section 7.2.1.2 of the IEEE 802.15.4-2006
+ *       document.
+ */
 static u8 fake_get_bsn(struct net_device *dev)
 {
 	BUG_ON(dev->type != ARPHRD_IEEE802154);
@@ -59,6 +99,19 @@ static u8 fake_get_bsn(struct net_device *dev)
 	return 0x00; /* BSN are implemented in HW, so return just 0 */
 }
 
+/**
+ * fake_assoc_req - Make an association request to the HW.
+ * @dev: The network device which we are associating to a network.
+ * @addr: The coordinator with which we wish to associate.
+ * @channel: The channel on which to associate.
+ * @cap: The capability information field to use in the association.
+ *
+ * Start an association with a coordinator. The coordinator's address
+ * and PAN ID can be found in @addr.
+ *
+ * Note: This is in section 7.3.1 and 7.5.3.1 of the IEEE
+ *       802.15.4-2006 document.
+ */
 static int fake_assoc_req(struct net_device *dev,
 		struct ieee802154_addr *addr, u8 channel, u8 cap)
 {
@@ -67,18 +120,70 @@ static int fake_assoc_req(struct net_device *dev,
 			IEEE802154_SUCCESS);
 }
 
+/**
+ * fake_assoc_resp - Send an association response to a device.
+ * @dev: The network device on which to send the response.
+ * @addr: The address of the device to respond to.
+ * @short_addr: The assigned short address for the device (if any).
+ * @status: The result of the association request.
+ *
+ * Queue the association response of the coordinator to another
+ * device's attempt to associate with the network which we
+ * coordinate. This is then added to the indirect-send queue to be
+ * transmitted to the end device when it polls for data.
+ *
+ * Note: This is in section 7.3.2 and 7.5.3.1 of the IEEE
+ *       802.15.4-2006 document.
+ */
 static int fake_assoc_resp(struct net_device *dev,
 		struct ieee802154_addr *addr, u16 short_addr, u8 status)
 {
 	return 0;
 }
 
+/**
+ * fake_disassoc_req - Disassociate a device from a network.
+ * @dev: The network device on which we're disassociating a device.
+ * @addr: The device to disassociate from the network.
+ * @reason: The reason to give to the device for being disassociated.
+ *
+ * This sends a disassociation notification to the device being
+ * disassociated from the network.
+ *
+ * Note: This is in section 7.5.3.2 of the IEEE 802.15.4-2006
+ *       document, with the reason described in 7.3.3.2.
+ */
 static int fake_disassoc_req(struct net_device *dev,
 		struct ieee802154_addr *addr, u8 reason)
 {
 	return ieee802154_nl_disassoc_confirm(dev, IEEE802154_SUCCESS);
 }
 
+/**
+ * fake_start_req - Start an IEEE 802.15.4 PAN.
+ * @dev: The network device on which to start the PAN.
+ * @addr: The coordinator address to use when starting the PAN.
+ * @channel: The channel on which to start the PAN.
+ * @bcn_ord: Beacon order.
+ * @sf_ord: Superframe order.
+ * @pan_coord: Whether or not we are the PAN coordinator or just
+ *             requesting a realignment perhaps?
+ * @blx: Battery Life Extension feature bitfield.
+ * @coord_realign: Something to realign something else.
+ *
+ * If pan_coord is non-zero then this starts a network with the
+ * provided parameters, otherwise it attempts a coordinator
+ * realignment of the stated network instead.
+ *
+ * Note: This is in section 7.5.2.3 of the IEEE 802.15.4-2006
+ * document, with 7.3.8 describing coordinator realignment.
+ *
+ * Note: There is currently no way to notify the coordinator userland
+ * program of whether or not the PAN has started successfully. As
+ * such, the coordinator program cannot know when the MAC has
+ * completed starting the network and will simply have to assume
+ * completeness based on some form of time delay.
+ */
 static int fake_start_req(struct net_device *dev, struct ieee802154_addr *addr,
 				u8 channel,
 				u8 bcn_ord, u8 sf_ord, u8 pan_coord, u8 blx,
@@ -87,6 +192,21 @@ static int fake_start_req(struct net_device *dev, struct ieee802154_addr *addr,
 	return 0;
 }
 
+/**
+ * fake_scan_req - Start a channel scan.
+ * @dev: The network device on which to perform a channel scan.
+ * @type: The type of scan to perform.
+ * @channels: The channel bitmask to scan.
+ * @duration: How long to spend on each channel.
+ *
+ * This starts either a passive (energy) scan or an active (PAN) scan
+ * on the channels indicated in the @channels bitmask. The duration of
+ * the scan is measured in terms of superframe duration. Specifically,
+ * the scan will spend aBaseSuperFrameDuration * ((2^n) + 1) on each
+ * channel.
+ *
+ * Note: This is in section 7.5.2.1 of the IEEE 802.15.4-2006 document.
+ */
 static int fake_scan_req(struct net_device *dev, u8 type, u32 channels,
 		u8 duration)
 {

include/net/ieee802154.h

@@ -23,8 +23,8 @@
  * Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
  */
 
-#ifndef IEEE802154_MAC_DEF_H
-#define IEEE802154_MAC_DEF_H
+#ifndef NET_IEEE802154_H
+#define NET_IEEE802154_H
 
 #define IEEE802154_FC_TYPE_BEACON	0x0	/* Frame is beacon */
 #define	IEEE802154_FC_TYPE_DATA		0x1	/* Frame is data */

include/net/ieee802154/nl802154.h

@@ -1,41 +0,0 @@
-/*
- * nl802154.h
- *
- * Copyright (C) 2007, 2008, 2009 Siemens AG
- *
- * 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.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
- *
- */
-
-#ifndef IEEE802154_NL_H
-#define IEEE802154_NL_H
-
-struct net_device;
-struct ieee802154_addr;
-
-int ieee802154_nl_assoc_indic(struct net_device *dev,
-		struct ieee802154_addr *addr, u8 cap);
-int ieee802154_nl_assoc_confirm(struct net_device *dev,
-		u16 short_addr, u8 status);
-int ieee802154_nl_disassoc_indic(struct net_device *dev,
-		struct ieee802154_addr *addr, u8 reason);
-int ieee802154_nl_disassoc_confirm(struct net_device *dev,
-		u8 status);
-int ieee802154_nl_scan_confirm(struct net_device *dev,
-		u8 status, u8 scan_type, u32 unscanned,
-		u8 *edl/*, struct list_head *pan_desc_list */);
-int ieee802154_nl_beacon_indic(struct net_device *dev, u16 panid,
-		u16 coord_addr);
-
-#endif

include/net/nl802154.h

@@ -0,0 +1,117 @@
+/*
+ * nl802154.h
+ *
+ * Copyright (C) 2007, 2008, 2009 Siemens AG
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ */
+
+#ifndef IEEE802154_NL_H
+#define IEEE802154_NL_H
+
+struct net_device;
+struct ieee802154_addr;
+
+/**
+ * ieee802154_nl_assoc_indic - Notify userland of an association request.
+ * @dev: The network device on which this association request was
+ *       received.
+ * @addr: The address of the device requesting association.
+ * @cap: The capability information field from the device.
+ *
+ * This informs a userland coordinator of a device requesting to
+ * associate with the PAN controlled by the coordinator.
+ *
+ * Note: This is in section 7.3.1 of the IEEE 802.15.4-2006 document.
+ */
+int ieee802154_nl_assoc_indic(struct net_device *dev,
+		struct ieee802154_addr *addr, u8 cap);
+
+/**
+ * ieee802154_nl_assoc_confirm - Notify userland of association.
+ * @dev: The device which has completed association.
+ * @short_addr: The short address assigned to the device.
+ * @status: The status of the association.
+ *
+ * Inform userland of the result of an association request. If the
+ * association request included asking the coordinator to allocate
+ * a short address then it is returned in @short_addr.
+ *
+ * Note: This is in section 7.3.2 of the IEEE 802.15.4 document.
+ */
+int ieee802154_nl_assoc_confirm(struct net_device *dev,
+		u16 short_addr, u8 status);
+
+/**
+ * ieee802154_nl_disassoc_indic - Notify userland of disassociation.
+ * @dev: The device on which disassociation was indicated.
+ * @addr: The device which is disassociating.
+ * @reason: The reason for the disassociation.
+ *
+ * Inform userland that a device has disassociated from the network.
+ *
+ * Note: This is in section 7.3.3 of the IEEE 802.15.4 document.
+ */
+int ieee802154_nl_disassoc_indic(struct net_device *dev,
+		struct ieee802154_addr *addr, u8 reason);
+
+/**
+ * ieee802154_nl_disassoc_confirm - Notify userland of disassociation
+ * completion.
+ * @dev: The device on which disassociation was ordered.
+ * @status: The result of the disassociation.
+ *
+ * Inform userland of the result of requesting that a device
+ * disassociate, or the result of requesting that we disassociate from
+ * a PAN managed by another coordinator.
+ *
+ * Note: This is in section 7.1.4.3 of the IEEE 802.15.4 document.
+ */
+int ieee802154_nl_disassoc_confirm(struct net_device *dev,
+		u8 status);
+
+/**
+ * ieee802154_nl_scan_confirm - Notify userland of completion of scan.
+ * @dev: The device which was instructed to scan.
+ * @status: The status of the scan operation.
+ * @scan_type: What type of scan was performed.
+ * @unscanned: Any channels that the device was unable to scan.
+ * @edl: The energy levels (if a passive scan).
+ *
+ *
+ * Note: This is in section 7.1.11 of the IEEE 802.15.4 document.
+ * Note: This API does not permit the return of an active scan result.
+ */
+int ieee802154_nl_scan_confirm(struct net_device *dev,
+		u8 status, u8 scan_type, u32 unscanned,
+		u8 *edl/*, struct list_head *pan_desc_list */);
+
+/**
+ * ieee802154_nl_beacon_indic - Notify userland of a received beacon.
+ * @dev: The device on which a beacon was received.
+ * @panid: The PAN of the coordinator.
+ * @coord_addr: The short address of the coordinator on that PAN.
+ *
+ * Note: This is in section 7.1.5 of the IEEE 802.15.4 document.
+ * Note: This API does not provide extended information such as what
+ * channel the PAN is on or what the LQI of the beacon frame was on
+ * receipt.
+ * Note: This API cannot indicate a beacon frame for a coordinator
+ *       operating in long addressing mode.
+ */
+int ieee802154_nl_beacon_indic(struct net_device *dev, u16 panid,
+		u16 coord_addr);
+
+#endif

net/ieee802154/af_ieee802154.c

@@ -34,8 +34,8 @@
 #include <net/tcp_states.h>
 #include <net/route.h>
 
-#include <net/ieee802154/af_ieee802154.h>
-#include <net/ieee802154/netdevice.h>
+#include <net/af_ieee802154.h>
+#include <net/ieee802154_netdev.h>
 
 #include "af802154.h"
 

net/ieee802154/dgram.c

@@ -26,9 +26,9 @@
 #include <linux/if_arp.h>
 #include <linux/list.h>
 #include <net/sock.h>
-#include <net/ieee802154/af_ieee802154.h>
-#include <net/ieee802154/mac_def.h>
-#include <net/ieee802154/netdevice.h>
+#include <net/af_ieee802154.h>
+#include <net/ieee802154.h>
+#include <net/ieee802154_netdev.h>
 
 #include <asm/ioctls.h>
 

net/ieee802154/netlink.c

@@ -27,9 +27,9 @@
 #include <net/netlink.h>
 #include <net/genetlink.h>
 #include <linux/nl802154.h>
-#include <net/ieee802154/af_ieee802154.h>
-#include <net/ieee802154/nl802154.h>
-#include <net/ieee802154/netdevice.h>
+#include <net/af_ieee802154.h>
+#include <net/nl802154.h>
+#include <net/ieee802154_netdev.h>
 
 static unsigned int ieee802154_seq_num;
 

net/ieee802154/raw.c

@@ -26,7 +26,7 @@
 #include <linux/if_arp.h>
 #include <linux/list.h>
 #include <net/sock.h>
-#include <net/ieee802154/af_ieee802154.h>
+#include <net/af_ieee802154.h>
 
 #include "af802154.h"