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Message-Id: <1243868091-5315-7-git-send-email-dbaryshkov@gmail.com>
Date: Mon, 1 Jun 2009 18:54:47 +0400
From: Dmitry Eremin-Solenikov <dbaryshkov@...il.com>
To: linux-kernel@...r.kernel.org
Cc: netdev@...r.kernel.org, linux-wireless@...r.kernel.org,
slapin@...fans.org, maxim.osipov@...mens.com,
dmitry.baryshkov@...mens.com, oliver.fendt@...mens.com,
Dmitry Eremin-Solenikov <dbaryshkov@...il.com>
Subject: [PATCH 06/10] mac802154: add a software MAC 802.15.4 implementation
Some of available devices are just dump radios implementing IEEE 802.15.4
PHY layer. This commit adds a common library that acts like an intermediate
layer between our socket family and drivers for those dumb devices.
Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@...il.com>
Signed-off-by: Sergey Lapin <slapin@...fans.org>
---
include/net/ieee802154/mac802154.h | 79 ++++
net/Kconfig | 1 +
net/Makefile | 1 +
net/mac802154/Kconfig | 13 +
net/mac802154/Makefile | 5 +
net/mac802154/beacon.c | 242 +++++++++++
net/mac802154/beacon.h | 48 ++
net/mac802154/beacon_hash.c | 103 +++++
net/mac802154/beacon_hash.h | 40 ++
net/mac802154/dev.c | 843 ++++++++++++++++++++++++++++++++++++
net/mac802154/mac802154.h | 64 +++
net/mac802154/mac_cmd.c | 325 ++++++++++++++
net/mac802154/main.c | 96 ++++
net/mac802154/mdev.c | 283 ++++++++++++
net/mac802154/mib.h | 32 ++
net/mac802154/pib.c | 87 ++++
net/mac802154/pib.h | 35 ++
net/mac802154/scan.c | 215 +++++++++
18 files changed, 2512 insertions(+), 0 deletions(-)
create mode 100644 include/net/ieee802154/mac802154.h
create mode 100644 net/mac802154/Kconfig
create mode 100644 net/mac802154/Makefile
create mode 100644 net/mac802154/beacon.c
create mode 100644 net/mac802154/beacon.h
create mode 100644 net/mac802154/beacon_hash.c
create mode 100644 net/mac802154/beacon_hash.h
create mode 100644 net/mac802154/dev.c
create mode 100644 net/mac802154/mac802154.h
create mode 100644 net/mac802154/mac_cmd.c
create mode 100644 net/mac802154/main.c
create mode 100644 net/mac802154/mdev.c
create mode 100644 net/mac802154/mib.h
create mode 100644 net/mac802154/pib.c
create mode 100644 net/mac802154/pib.h
create mode 100644 net/mac802154/scan.c
diff --git a/include/net/ieee802154/mac802154.h b/include/net/ieee802154/mac802154.h
new file mode 100644
index 0000000..68e48d0
--- /dev/null
+++ b/include/net/ieee802154/mac802154.h
@@ -0,0 +1,79 @@
+/*
+ * IEEE802.15.4-2003 specification
+ *
+ * Copyright (C) 2007, 2008 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.
+ *
+ * Written by:
+ */
+#ifndef IEEE802154_MAC802154_H
+#define IEEE802154_MAC802154_H
+
+/* FIXME: this can be merged with const.h ? */
+typedef enum {
+ PHY_BUSY = 0, /* cca */
+ PHY_BUSY_RX, /* state */
+ PHY_BUSY_TX, /* state */
+ PHY_FORCE_TRX_OFF,
+ PHY_IDLE, /* cca */
+ PHY_INVALID_PARAMETER, /* pib get/set */
+ PHY_RX_ON, /* state */
+ PHY_SUCCESS, /* ed */
+ PHY_TRX_OFF, /* cca, ed, state */
+ PHY_TX_ON, /* cca, ed, state */
+ PHY_UNSUPPORTED_ATTRIBUTE, /* pib get/set */
+ PHY_READ_ONLY, /* pib get/set */
+
+ PHY_INVAL = -1, /* all */
+ PHY_ERROR = -2, /* all */
+} phy_status_t;
+
+struct ieee802154_dev {
+ const char *name;
+ int extra_tx_headroom; /* headroom to reserve for tx skb */
+ void *priv; /* driver-specific data */
+ u32 channel_mask;
+ u8 current_channel;
+ u32 flags; /* Flags for device to set */
+ struct device *parent;
+ struct net_device *netdev; /* mwpanX device */
+};
+
+/* Checksum is in hardware and is omitted from packet */
+#define IEEE802154_FLAGS_OMIT_CKSUM (1 << 0)
+
+struct sk_buff;
+
+struct ieee802154_ops {
+ struct module *owner;
+ phy_status_t (*tx)(struct ieee802154_dev *dev, struct sk_buff *skb);
+ phy_status_t (*cca)(struct ieee802154_dev *dev);
+ phy_status_t (*ed)(struct ieee802154_dev *dev, u8 *level);
+ phy_status_t (*set_trx_state)(struct ieee802154_dev *dev, phy_status_t state);
+ phy_status_t (*set_channel)(struct ieee802154_dev *dev, int channel);
+ /* FIXME: PIB get/set ??? */
+};
+
+struct ieee802154_dev *ieee802154_alloc_device(void);
+int ieee802154_register_device(struct ieee802154_dev *dev, struct ieee802154_ops *ops);
+void ieee802154_unregister_device(struct ieee802154_dev *dev);
+void ieee802154_free_device(struct ieee802154_dev *dev);
+
+int __deprecated ieee802154_add_slave(struct ieee802154_dev *hw, const u8 *addr);
+
+void ieee802154_rx(struct ieee802154_dev *dev, struct sk_buff *skb, u8 lqi);
+void ieee802154_rx_irqsafe(struct ieee802154_dev *dev, struct sk_buff *skb, u8 lqi);
+#endif
+
diff --git a/net/Kconfig b/net/Kconfig
index 7051b97..b42d325 100644
--- a/net/Kconfig
+++ b/net/Kconfig
@@ -180,6 +180,7 @@ source "net/econet/Kconfig"
source "net/wanrouter/Kconfig"
source "net/phonet/Kconfig"
source "net/ieee802154/Kconfig"
+source "net/mac802154/Kconfig"
source "net/sched/Kconfig"
source "net/dcb/Kconfig"
diff --git a/net/Makefile b/net/Makefile
index ba324ae..81115f6 100644
--- a/net/Makefile
+++ b/net/Makefile
@@ -61,6 +61,7 @@ ifneq ($(CONFIG_DCB),)
obj-y += dcb/
endif
obj-y += ieee802154/
+obj-y += mac802154/
ifeq ($(CONFIG_NET),y)
obj-$(CONFIG_SYSCTL) += sysctl_net.o
diff --git a/net/mac802154/Kconfig b/net/mac802154/Kconfig
new file mode 100644
index 0000000..4f0333a
--- /dev/null
+++ b/net/mac802154/Kconfig
@@ -0,0 +1,13 @@
+config MAC802154
+ tristate "Generic IEEE 802.15.4 Soft Networking Stack (mac802154)"
+ depends on IEEE802154 && EXPERIMENTAL
+ select CRC_ITU_T
+ ---help---
+ This option enables the hardware independent IEEE 802.15.4
+ networking stack for SoftMAC devices (the ones implementing
+ only PHY level of IEEE 802.15.4 standard).
+
+ If you plan to use HardMAC IEEE 802.15.4 devices, you can
+ say N here. Alternatievly you can say M to compile it as
+ module.
+
diff --git a/net/mac802154/Makefile b/net/mac802154/Makefile
new file mode 100644
index 0000000..253ae18
--- /dev/null
+++ b/net/mac802154/Makefile
@@ -0,0 +1,5 @@
+obj-$(CONFIG_MAC802154) += mac802154.o
+mac802154-objs := main.o mdev.o pib.o dev.o mac_cmd.o scan.o \
+ beacon.o beacon_hash.o
+
+EXTRA_CFLAGS += -Wall -DDEBUG
diff --git a/net/mac802154/beacon.c b/net/mac802154/beacon.c
new file mode 100644
index 0000000..cb7cec3
--- /dev/null
+++ b/net/mac802154/beacon.c
@@ -0,0 +1,242 @@
+/*
+ * MAC beacon interface
+ *
+ * Copyright 2007, 2008 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.
+ *
+ * Written by:
+ * Sergey Lapin <sergey.lapin@...mens.com>
+ * Dmitry Eremin-Solenikov <dbaryshkov@...il.com>
+ */
+
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/if_arp.h>
+#include <linux/list.h>
+
+#include <net/ieee802154/af_ieee802154.h>
+#include <net/ieee802154/nl802154.h>
+#include <net/ieee802154/mac802154.h>
+#include <net/ieee802154/mac_def.h>
+#include <net/ieee802154/netdevice.h>
+
+#include "mac802154.h"
+#include "beacon.h"
+
+/* Beacon frame format per specification is the followinf:
+ * Standard MAC frame header:
+ * FC (2) SEQ (1)
+ * Addressing (4-20)
+ * Beacon fields:
+ * <Superframe specification> (2)
+ * <GTS> (?)
+ * <Pending address> (?)
+ * <Beacon payload> (?)
+ * FCS (2)
+ *
+ * Superframe specification:
+ * bit Value
+ * 15 Association permit
+ * 14 PAN coordinator
+ * 13 Reserved
+ * 12 Battery life extension
+ * 8-11 Final CAP slot
+ * 4-7 Superframe order
+ * 0-3 Beacon order
+ *
+ * GTS:
+ * <GTS specification> (1)
+ * <GTS directions> (0-1)
+ * <GTS list> (?)
+ *
+ * Pending address:
+ * <Pending address specification> (1)
+ * <Pending address list (?)
+ *
+ * GTS specification:
+ * bit Value
+ * 7 GTS permit
+ * 3-6 Reserved
+ * 0-2 GTS descriptor count
+ *
+ * Pending address specification:
+ * bit Value
+ * 7 Reserved
+ * 4-6 Number of extended addresses pendinf
+ * 3 Reserved
+ * 0-2 Number of short addresses pending
+ * */
+
+#define IEEE802154_BEACON_SF_BO_BEACONLESS (15 << 0)
+#define IEEE802154_BEACON_SF_SO(x) ((x & 0xf) << 4)
+#define IEEE802154_BEACON_SF_SO_INACTIVE IEEE802154_BEACON_SF_SO(15)
+#define IEEE802154_BEACON_SF_PANCOORD (1 << 14)
+#define IEEE802154_BEACON_SF_CANASSOC (1 << 15)
+#define IEEE802154_BEACON_GTS_COUNT(x) (x << 0)
+#define IEEE802154_BEACON_GTS_PERMIT (1 << 7)
+#define IEEE802154_BEACON_PA_SHORT(x) ((x & 7) << 0)
+#define IEEE802154_BEACON_PA_LONG(x) ((x & 7) << 4)
+
+/* Flags parameter */
+#define IEEE802154_BEACON_FLAG_PANCOORD (1 << 0)
+#define IEEE802154_BEACON_FLAG_CANASSOC (1 << 1)
+#define IEEE802154_BEACON_FLAG_GTSPERMIT (1 << 2)
+
+struct ieee802154_address_list {
+ struct list_head list;
+ struct ieee802154_addr addr;
+};
+/*
+ * @dev device
+ * @addr destination address
+ * @saddr source address
+ * @buf beacon payload
+ * @len beacon payload size
+ * @pan_coord - if we're PAN coordinator while sending this frame
+ * @gts_permit - wheather we allow GTS requests
+ * @al address list to be provided in beacon
+ *
+ * TODO:
+ * For a beacon frame, the sequence number field shall specify a BSN.
+ * Each coordinator shall store its current
+ * BSN value in the MAC PIB attribute macBSN and initialize it to a random value.
+ * The algorithm for choosing a random number is out of the scope
+ * of this standard. The coordinator shall copy the value of the macBSN
+ * attribute into the sequence number field of a beacon frame,
+ * each time one is generated, and shall then increment macBSN by one.
+ *
+*/
+
+
+int ieee802154_send_beacon(struct net_device *dev, struct ieee802154_addr *saddr,
+ u16 pan_id, const u8 *buf, int len,
+ int flags, struct list_head *al)
+{
+ struct sk_buff *skb;
+ int err;
+ u16 sf;
+ u8 gts;
+ u8 pa_spec;
+ int addr16_cnt;
+ int addr64_cnt;
+ struct ieee802154_addr addr;
+
+ BUG_ON(dev->type != ARPHRD_IEEE802154);
+
+ skb = alloc_skb(LL_ALLOCATED_SPACE(dev) + len, GFP_ATOMIC);
+ if (!skb)
+ return -ENOMEM;
+
+ skb_reserve(skb, LL_RESERVED_SPACE(dev));
+
+ skb_reset_network_header(skb);
+
+ MAC_CB(skb)->flags = IEEE802154_FC_TYPE_BEACON;
+ MAC_CB(skb)->seq = IEEE802154_MLME_OPS(dev)->get_bsn(dev);
+
+ addr.addr_type = IEEE802154_ADDR_NONE;
+ err = dev_hard_header(skb, dev, ETH_P_IEEE802154, &addr, saddr, len);
+ if (err < 0) {
+ kfree_skb(skb);
+ return err;
+ }
+ skb_reset_mac_header(skb);
+
+ /* Superframe */
+ sf = IEEE802154_BEACON_SF_BO_BEACONLESS;
+ sf |= IEEE802154_BEACON_SF_SO_INACTIVE;
+ if (flags & IEEE802154_BEACON_FLAG_PANCOORD)
+ sf |= IEEE802154_BEACON_SF_PANCOORD;
+
+ if (flags & IEEE802154_BEACON_FLAG_CANASSOC)
+ sf |= IEEE802154_BEACON_SF_CANASSOC;
+ memcpy(skb_put(skb, sizeof(sf)), &sf, sizeof(sf));
+
+ /* TODO GTS */
+ gts = 0;
+
+ if (flags & IEEE802154_BEACON_FLAG_GTSPERMIT)
+ gts |= IEEE802154_BEACON_GTS_PERMIT;
+ memcpy(skb_put(skb, sizeof(gts)), >s, sizeof(gts));
+
+ /* FIXME pending address */
+ addr16_cnt = 0;
+ addr64_cnt = 0;
+
+ pa_spec = IEEE802154_BEACON_PA_LONG(addr64_cnt) | IEEE802154_BEACON_PA_SHORT(addr16_cnt);
+ memcpy(skb_put(skb, sizeof(pa_spec)), &pa_spec, sizeof(pa_spec));
+
+ memcpy(skb_put(skb, len), buf, len);
+
+ skb->dev = dev;
+ skb->protocol = htons(ETH_P_IEEE802154);
+
+ return dev_queue_xmit(skb);
+}
+
+/* at entry to this function we need skb->data to point to start
+ * of beacon field and MAC frame already parsed into MAC_CB */
+
+int parse_beacon_frame(struct sk_buff *skb, u8 *buf,
+ int *flags, struct list_head *al)
+{
+ int offt = 0;
+ u8 gts_spec;
+ u8 pa_spec;
+ struct ieee802154_pandsc *pd;
+ u16 sf = skb->data[0] + (skb->data[1] << 8);
+
+ pd = kzalloc(sizeof(struct ieee802154_pandsc), GFP_KERNEL);
+
+ /* Filling-up pre-parsed values */
+ pd->lqi = MAC_CB(skb)->lqi;
+ pd->sf = sf;
+ /* FIXME: make sure we do it right */
+ memcpy(&pd->addr, &MAC_CB(skb)->da, sizeof(struct ieee802154_addr));
+
+ /* Supplying our nitifiers with data */
+ ieee802154_slave_event(skb->dev, IEEE802154_NOTIFIER_BEACON, pd);
+ ieee802154_nl_beacon_indic(skb->dev, pd->addr.pan_id, pd->addr.short_addr);
+ /* FIXME: We don't cache PAN descriptors yet */
+ kfree(pd);
+
+ offt += 2;
+ gts_spec = skb->data[offt++];
+ /* FIXME !!! */
+ if ((gts_spec & 7) != 0) {
+ pr_debug("We still don't parse GTS part properly");
+ return -ENOTSUPP;
+ }
+ pa_spec = skb->data[offt++];
+ /* FIXME !!! */
+ if (pa_spec != 0) {
+ pr_debug("We still don't parse PA part properly");
+ return -ENOTSUPP;
+ }
+
+ *flags = 0;
+
+ if (sf & IEEE802154_BEACON_SF_PANCOORD)
+ *flags |= IEEE802154_BEACON_FLAG_PANCOORD;
+
+ if (sf & IEEE802154_BEACON_SF_CANASSOC)
+ *flags |= IEEE802154_BEACON_FLAG_CANASSOC;
+ BUG_ON(skb->len - offt < 0);
+ /* FIXME */
+ if (buf && (skb->len - offt > 0))
+ memcpy(buf, skb->data + offt, skb->len - offt);
+ return 0;
+}
+
diff --git a/net/mac802154/beacon.h b/net/mac802154/beacon.h
new file mode 100644
index 0000000..0fedc93
--- /dev/null
+++ b/net/mac802154/beacon.h
@@ -0,0 +1,48 @@
+/*
+ * beacon.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.
+ *
+ * Written by:
+ * Pavel Smolenskiy <pavel.smolenskiy@...il.com>
+ * Maxim Gorbachyov <maxim.gorbachev@...mens.com>
+ */
+
+#ifndef IEEE802154_BEACON_H
+#define IEEE802154_BEACON_H
+
+/* Per spec; optimizations are needed */
+struct ieee802154_pandsc {
+ struct list_head list;
+ struct ieee802154_addr addr; /* Contains panid */
+ int channel;
+ u16 sf;
+ bool gts_permit;
+ u8 lqi;
+/* FIXME: Aging of stored PAN descriptors is not decided yet,
+ * because no PAN descriptor storage is implemented yet */
+ u32 timestamp;
+};
+
+int parse_beacon_frame(struct sk_buff *skb, u8 * buf,
+ int *flags, struct list_head *al);
+
+int ieee802154_send_beacon(struct net_device *dev, struct ieee802154_addr *saddr,
+ u16 pan_id, const u8 *buf, int len,
+ int flags, struct list_head *al);
+
+#endif /* IEEE802154_BEACON_H */
+
diff --git a/net/mac802154/beacon_hash.c b/net/mac802154/beacon_hash.c
new file mode 100644
index 0000000..90ea801
--- /dev/null
+++ b/net/mac802154/beacon_hash.c
@@ -0,0 +1,103 @@
+/*
+ * MAC beacon hash storage
+ *
+ * Copyright 2007, 2008 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.
+ *
+ * Written by:
+ * Sergey Lapin <sergey.lapin@...mens.com>
+ * Dmitry Eremin-Solenikov <dbaryshkov@...il.com>
+ */
+
+#include <linux/slab.h>
+#include <linux/list.h>
+#include <linux/spinlock.h>
+
+#include <net/ieee802154/af_ieee802154.h>
+
+#include "beacon_hash.h"
+
+static struct hlist_head beacon_hash[IEEE802154_BEACON_HTABLE_SIZE];
+static DEFINE_RWLOCK(beacon_hash_lock);
+
+static int beacon_hashfn(struct ieee802154_addr *coord_addr, u16 pan_addr)
+{
+ return pan_addr % IEEE802154_BEACON_HTABLE_SIZE;
+}
+
+static void __beacon_add_node(struct ieee802154_addr *coord_addr, u16 pan_addr)
+{
+ struct beacon_node *node = kzalloc(sizeof(struct beacon_node), GFP_KERNEL);
+ struct hlist_head *list = &beacon_hash[beacon_hashfn(coord_addr, pan_addr)];
+ memcpy(&node->coord_addr, coord_addr, sizeof(struct ieee802154_addr));
+ node->pan_addr = pan_addr;
+ INIT_HLIST_NODE(&node->list);
+ hlist_add_head(&node->list, list);
+}
+
+struct beacon_node *ieee802154_beacon_find_pan(struct ieee802154_addr *coord_addr,
+ u16 pan_addr)
+{
+ struct hlist_head *list;
+ struct hlist_node *tmp;
+ list = &beacon_hash[beacon_hashfn(coord_addr, pan_addr)];
+ if (hlist_empty(list))
+ return NULL;
+ hlist_for_each(tmp, list) {
+ struct beacon_node *entry = hlist_entry(tmp, struct beacon_node, list);
+ if (entry->pan_addr == pan_addr)
+ return entry;
+ }
+ return NULL;
+}
+
+void ieee802154_beacon_hash_add(struct ieee802154_addr *coord_addr)
+{
+ if (!ieee802154_beacon_find_pan(coord_addr, coord_addr->pan_id)) {
+ write_lock(&beacon_hash_lock);
+ __beacon_add_node(coord_addr, coord_addr->pan_id);
+ write_unlock(&beacon_hash_lock);
+ }
+}
+
+void ieee802154_beacon_hash_del(struct ieee802154_addr *coord_addr)
+{
+ struct beacon_node *entry = ieee802154_beacon_find_pan(coord_addr,
+ coord_addr->pan_id);
+ if (!entry)
+ return;
+ write_lock(&beacon_hash_lock);
+ hlist_del(&entry->list);
+ write_unlock(&beacon_hash_lock);
+ kfree(entry);
+}
+
+void ieee802154_beacon_hash_dump(void)
+{
+ int i;
+ struct hlist_node *tmp;
+ pr_debug("beacon hash dump begin\n");
+ read_lock(&beacon_hash_lock);
+ for (i = 0; i < IEEE802154_BEACON_HTABLE_SIZE; i++) {
+ struct beacon_node *entry;
+ hlist_for_each(tmp, &beacon_hash[i]) {
+ entry = hlist_entry(tmp, struct beacon_node, list);
+ pr_debug("PAN: %d\n", entry->pan_addr);
+ }
+ }
+ read_unlock(&beacon_hash_lock);
+ pr_debug("beacon hash dump end\n");
+}
+
diff --git a/net/mac802154/beacon_hash.h b/net/mac802154/beacon_hash.h
new file mode 100644
index 0000000..db8457c
--- /dev/null
+++ b/net/mac802154/beacon_hash.h
@@ -0,0 +1,40 @@
+/*
+ * MAC beacon hash storage
+ *
+ * Copyright 2007, 2008 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.
+ *
+ * Written by:
+ * Sergey Lapin <sergey.lapin@...mens.com>
+ * Dmitry Eremin-Solenikov <dbaryshkov@...il.com>
+ */
+
+#ifndef IEEE802154_BEACON_HASH_H
+#define IEEE802154_BEACON_HASH_H
+
+#define IEEE802154_BEACON_HTABLE_SIZE 256
+
+struct beacon_node {
+ struct hlist_node list;
+ struct ieee802154_addr coord_addr;
+ u16 pan_addr;
+};
+struct beacon_node *ieee802154_beacon_find_pan(struct ieee802154_addr *coord_addr,
+ u16 pan_addr);
+void ieee802154_beacon_hash_add(struct ieee802154_addr *coord_addr);
+void ieee802154_beacon_hash_del(struct ieee802154_addr *coord_addr);
+void ieee802154_beacon_hash_dump(void);
+#endif
+
diff --git a/net/mac802154/dev.c b/net/mac802154/dev.c
new file mode 100644
index 0000000..4e3f70f
--- /dev/null
+++ b/net/mac802154/dev.c
@@ -0,0 +1,843 @@
+/*
+ * Copyright 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.
+ *
+ * Written by:
+ * Sergey Lapin <sergey.lapin@...mens.com>
+ * Maxim Gorbachyov <maxim.gorbachev@...mens.com>
+ */
+
+#include <linux/net.h>
+#include <linux/capability.h>
+#include <linux/module.h>
+#include <linux/if_arp.h>
+#include <linux/termios.h> /* For TIOCOUTQ/INQ */
+#include <linux/notifier.h>
+#include <linux/random.h>
+#include <linux/crc-itu-t.h>
+#include <net/datalink.h>
+#include <net/psnap.h>
+#include <net/sock.h>
+#include <net/tcp_states.h>
+#include <net/route.h>
+
+#include <net/ieee802154/af_ieee802154.h>
+#include <net/ieee802154/mac802154.h>
+#include <net/ieee802154/netdevice.h>
+#include <net/ieee802154/mac_def.h>
+
+#include "mac802154.h"
+#include "beacon.h"
+#include "beacon_hash.h"
+#include "mib.h"
+
+struct ieee802154_netdev_priv {
+ struct list_head list;
+ struct ieee802154_priv *hw;
+ struct net_device *dev;
+
+ __le16 pan_id;
+ __le16 short_addr;
+
+ u8 chan;
+
+ /* MAC BSN field */
+ u8 bsn;
+ /* MAC BSN field */
+ u8 dsn;
+
+ /* This one is used to provide notifications */
+ struct blocking_notifier_head events;
+};
+
+static int ieee802154_net_xmit(struct sk_buff *skb, struct net_device *dev)
+{
+ struct ieee802154_netdev_priv *priv;
+ priv = netdev_priv(dev);
+
+ if (!(priv->hw->hw.flags & IEEE802154_FLAGS_OMIT_CKSUM)) {
+ u16 crc = bitrev16(crc_itu_t_bitreversed(0, skb->data, skb->len));
+ u8 *data = skb_put(skb, 2);
+ data[0] = crc & 0xff;
+ data[1] = crc >> 8;
+ }
+
+ PHY_CB(skb)->chan = priv->chan;
+
+ skb->iif = dev->ifindex;
+ skb->dev = priv->hw->hw.netdev;
+ dev->stats.tx_packets++;
+ dev->stats.tx_bytes += skb->len;
+
+ dev->trans_start = jiffies;
+ dev_queue_xmit(skb);
+
+ return 0;
+}
+
+static int ieee802154_slave_open(struct net_device *dev)
+{
+ struct ieee802154_netdev_priv *priv;
+ priv = netdev_priv(dev);
+ netif_start_queue(dev);
+ return 0;
+}
+
+static int ieee802154_slave_close(struct net_device *dev)
+{
+ struct ieee802154_netdev_priv *priv;
+ dev->priv_flags &= ~IFF_IEEE802154_COORD;
+ netif_stop_queue(dev);
+ priv = netdev_priv(dev);
+ netif_stop_queue(dev);
+ return 0;
+}
+
+
+static int ieee802154_slave_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
+{
+ struct ieee802154_netdev_priv *priv = netdev_priv(dev);
+ struct sockaddr_ieee802154 *sa = (struct sockaddr_ieee802154 *)&ifr->ifr_addr;
+ switch (cmd) {
+ case SIOCGIFADDR:
+ if (priv->pan_id == IEEE802154_PANID_BROADCAST || priv->short_addr == IEEE802154_ADDR_BROADCAST)
+ return -EADDRNOTAVAIL;
+
+ sa->family = AF_IEEE802154;
+ sa->addr.addr_type = IEEE802154_ADDR_SHORT;
+ sa->addr.pan_id = priv->pan_id;
+ sa->addr.short_addr = priv->short_addr;
+ return 0;
+ case SIOCSIFADDR:
+ dev_warn(&dev->dev, "Using DEBUGing ioctl SIOCSIFADDR isn't recommened!\n");
+ if (sa->family != AF_IEEE802154 || sa->addr.addr_type != IEEE802154_ADDR_SHORT ||
+ sa->addr.pan_id == IEEE802154_PANID_BROADCAST || sa->addr.short_addr == IEEE802154_ADDR_BROADCAST || sa->addr.short_addr == IEEE802154_ADDR_UNDEF)
+ return -EINVAL;
+
+ priv->pan_id = sa->addr.pan_id;
+ priv->short_addr = sa->addr.short_addr;
+ return 0;
+ }
+ return -ENOIOCTLCMD;
+}
+
+static int ieee802154_slave_mac_addr(struct net_device *dev, void *p)
+{
+ struct sockaddr *addr = p;
+
+ if (netif_running(dev))
+ return -EBUSY;
+ /* FIXME: validate addr */
+ memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
+ return 0;
+}
+
+static int ieee802154_header_create(struct sk_buff *skb, struct net_device *dev,
+ unsigned short type, const void *_daddr,
+ const void *_saddr, unsigned len)
+{
+ u8 head[24] = {};
+ int pos = 0;
+
+ u16 fc;
+ const struct ieee802154_addr *saddr = _saddr;
+ const struct ieee802154_addr *daddr = _daddr;
+ struct ieee802154_addr dev_addr;
+ struct ieee802154_netdev_priv *priv = netdev_priv(dev);
+
+ fc = MAC_CB_TYPE(skb);
+ if (MAC_CB_IS_ACKREQ(skb))
+ fc |= IEEE802154_FC_ACK_REQ;
+
+ pos = 2;
+
+ head[pos++] = MAC_CB(skb)->seq; /* DSN/BSN */
+
+ if (!daddr)
+ return -EINVAL;
+
+ if (!saddr) {
+ if (priv->short_addr == IEEE802154_ADDR_BROADCAST || priv->short_addr == IEEE802154_ADDR_UNDEF || priv->pan_id == IEEE802154_PANID_BROADCAST) {
+ dev_addr.addr_type = IEEE802154_ADDR_LONG;
+ memcpy(dev_addr.hwaddr, dev->dev_addr, IEEE802154_ADDR_LEN);
+ } else {
+ dev_addr.addr_type = IEEE802154_ADDR_SHORT;
+ dev_addr.short_addr = priv->short_addr;
+ }
+
+ dev_addr.pan_id = priv->pan_id;
+ saddr = &dev_addr;
+ }
+
+ if (daddr->addr_type != IEEE802154_ADDR_NONE) {
+ fc |= (daddr->addr_type << IEEE802154_FC_DAMODE_SHIFT);
+
+ head[pos++] = daddr->pan_id & 0xff;
+ head[pos++] = daddr->pan_id >> 8;
+
+ if (daddr->addr_type == IEEE802154_ADDR_SHORT) {
+ head[pos++] = daddr->short_addr & 0xff;
+ head[pos++] = daddr->short_addr >> 8;
+ } else {
+ memcpy(head + pos, daddr->hwaddr, IEEE802154_ADDR_LEN);
+ pos += IEEE802154_ADDR_LEN;
+ }
+ }
+
+ if (saddr->addr_type != IEEE802154_ADDR_NONE) {
+ fc |= (saddr->addr_type << IEEE802154_FC_SAMODE_SHIFT);
+
+ if ((saddr->pan_id == daddr->pan_id) && (saddr->pan_id != IEEE802154_PANID_BROADCAST))
+ fc |= IEEE802154_FC_INTRA_PAN; /* PANID compression/ intra PAN */
+ else {
+ head[pos++] = saddr->pan_id & 0xff;
+ head[pos++] = saddr->pan_id >> 8;
+ }
+
+ if (saddr->addr_type == IEEE802154_ADDR_SHORT) {
+ head[pos++] = saddr->short_addr & 0xff;
+ head[pos++] = saddr->short_addr >> 8;
+ } else {
+ memcpy(head + pos, saddr->hwaddr, IEEE802154_ADDR_LEN);
+ pos += IEEE802154_ADDR_LEN;
+ }
+ }
+
+ head[0] = fc;
+ head[1] = fc >> 8;
+
+ memcpy(skb_push(skb, pos), head, pos);
+
+ return pos;
+}
+
+static int ieee802154_header_parse(const struct sk_buff *skb, unsigned char *haddr)
+{
+ const u8 *hdr = skb_mac_header(skb), *tail = skb_tail_pointer(skb);
+ struct ieee802154_addr *addr = (struct ieee802154_addr *)haddr;
+ u16 fc;
+ int da_type;
+
+ if (hdr + 3 > tail)
+ goto malformed;
+
+ fc = hdr[0] | (hdr[1] << 8);
+
+ hdr += 3;
+
+ da_type = IEEE802154_FC_DAMODE(fc);
+ addr->addr_type = IEEE802154_FC_SAMODE(fc);
+
+ switch (da_type) {
+ case IEEE802154_ADDR_NONE:
+ if (fc & IEEE802154_FC_INTRA_PAN)
+ goto malformed;
+ break;
+
+ case IEEE802154_ADDR_LONG:
+ if (hdr + 2 > tail)
+ goto malformed;
+ if (fc & IEEE802154_FC_INTRA_PAN) {
+ addr->pan_id = hdr[0] | (hdr[1] << 8);
+ hdr += 2;
+ }
+
+ if (hdr + IEEE802154_ADDR_LEN > tail)
+ goto malformed;
+ hdr += IEEE802154_ADDR_LEN;
+ break;
+
+ case IEEE802154_ADDR_SHORT:
+ if (hdr + 2 > tail)
+ goto malformed;
+ if (fc & IEEE802154_FC_INTRA_PAN) {
+ addr->pan_id = hdr[0] | (hdr[1] << 8);
+ hdr += 2;
+ }
+
+ if (hdr + 2 > tail)
+ goto malformed;
+ hdr += 2;
+ break;
+
+ default:
+ goto malformed;
+
+ }
+
+ switch (addr->addr_type) {
+ case IEEE802154_ADDR_NONE:
+ break;
+
+ case IEEE802154_ADDR_LONG:
+ if (hdr + 2 > tail)
+ goto malformed;
+ if (!(fc & IEEE802154_FC_INTRA_PAN)) {
+ addr->pan_id = hdr[0] | (hdr[1] << 8);
+ hdr += 2;
+ }
+
+ if (hdr + IEEE802154_ADDR_LEN > tail)
+ goto malformed;
+ memcpy(addr->hwaddr, hdr, IEEE802154_ADDR_LEN);
+ hdr += IEEE802154_ADDR_LEN;
+ break;
+
+ case IEEE802154_ADDR_SHORT:
+ if (hdr + 2 > tail)
+ goto malformed;
+ if (!(fc & IEEE802154_FC_INTRA_PAN)) {
+ addr->pan_id = hdr[0] | (hdr[1] << 8);
+ hdr += 2;
+ }
+
+ if (hdr + 2 > tail)
+ goto malformed;
+ addr->short_addr = hdr[0] | (hdr[1] << 8);
+ hdr += 2;
+ break;
+
+ default:
+ goto malformed;
+
+ }
+
+ return sizeof(struct ieee802154_addr);
+
+malformed:
+ pr_debug("malformed packet\n");
+ return 0;
+}
+
+static struct header_ops ieee802154_header_ops = {
+ .create = ieee802154_header_create,
+ .parse = ieee802154_header_parse,
+};
+
+static void ieee802154_netdev_setup(struct net_device *dev)
+{
+ dev->addr_len = IEEE802154_ADDR_LEN;
+ memset(dev->broadcast, 0xff, IEEE802154_ADDR_LEN);
+ dev->features = NETIF_F_NO_CSUM;
+ dev->hard_header_len = 2 + 1 + 20 + 14;
+ dev->header_ops = &ieee802154_header_ops;
+ dev->needed_tailroom = 2; /* FCS */
+ dev->mtu = 127;
+ dev->tx_queue_len = 10;
+ dev->type = ARPHRD_IEEE802154;
+ dev->flags = IFF_NOARP | IFF_BROADCAST;
+ dev->watchdog_timeo = 0;
+}
+
+static const struct net_device_ops ieee802154_slave_ops = {
+ .ndo_open = ieee802154_slave_open,
+ .ndo_stop = ieee802154_slave_close,
+ .ndo_start_xmit = ieee802154_net_xmit,
+ .ndo_do_ioctl = ieee802154_slave_ioctl,
+ .ndo_set_mac_address = ieee802154_slave_mac_addr,
+};
+
+int ieee802154_add_slave(struct ieee802154_dev *hw, const u8 *addr)
+{
+ struct net_device *dev;
+ struct ieee802154_netdev_priv *priv;
+ struct ieee802154_priv *ipriv = ieee802154_to_priv(hw);
+ int err;
+
+ ASSERT_RTNL();
+
+ dev = alloc_netdev(sizeof(struct ieee802154_netdev_priv),
+ "wpan%d", ieee802154_netdev_setup);
+ if (!dev) {
+ printk(KERN_ERR "Failure to initialize IEEE802154 device\n");
+ return -ENOMEM;
+ }
+ priv = netdev_priv(dev);
+ priv->dev = dev;
+ priv->hw = ipriv;
+
+ get_random_bytes(&priv->bsn, 1);
+ get_random_bytes(&priv->dsn, 1);
+
+ BLOCKING_INIT_NOTIFIER_HEAD(&priv->events);
+ memcpy(dev->dev_addr, addr, dev->addr_len);
+ memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
+ dev->priv_flags = IFF_SLAVE_INACTIVE;
+ dev->netdev_ops = &ieee802154_slave_ops;
+ dev->ml_priv = &mac802154_mlme;
+
+ priv->pan_id = IEEE802154_PANID_BROADCAST;
+ priv->short_addr = IEEE802154_ADDR_BROADCAST;
+
+ dev_hold(ipriv->hw.netdev);
+
+ dev->needed_headroom = ipriv->hw.extra_tx_headroom;
+
+ spin_lock(&ipriv->slaves_lock);
+ list_add_tail(&priv->list, &ipriv->slaves);
+ spin_unlock(&ipriv->slaves_lock);
+ /*
+ * If the name is a format string the caller wants us to do a
+ * name allocation.
+ */
+ if (strchr(dev->name, '%')) {
+ err = dev_alloc_name(dev, dev->name);
+ if (err < 0)
+ goto out;
+ }
+
+ SET_NETDEV_DEV(dev, &ipriv->hw.netdev->dev);
+
+ err = register_netdevice(dev);
+ if (err < 0)
+ goto out;
+
+ return dev->ifindex;
+out:
+ return err;
+}
+EXPORT_SYMBOL(ieee802154_add_slave);
+
+static void __ieee802154_del_slave(struct ieee802154_netdev_priv *ndp)
+{
+ struct net_device *dev = ndp->dev;
+ dev_put(ndp->hw->hw.netdev);
+ unregister_netdev(ndp->dev);
+
+ spin_lock(&ndp->hw->slaves_lock);
+ list_del(&ndp->list);
+ spin_unlock(&ndp->hw->slaves_lock);
+
+ free_netdev(dev);
+}
+
+void ieee802154_drop_slaves(struct ieee802154_dev *hw)
+{
+ struct ieee802154_priv *priv = ieee802154_to_priv(hw);
+ struct ieee802154_netdev_priv *ndp, *next;
+
+ spin_lock(&priv->slaves_lock);
+ list_for_each_entry_safe(ndp, next, &priv->slaves, list) {
+ spin_unlock(&priv->slaves_lock);
+ __ieee802154_del_slave(ndp);
+ spin_lock(&priv->slaves_lock);
+ }
+ spin_unlock(&priv->slaves_lock);
+}
+
+static int ieee802154_send_ack(struct sk_buff *skb)
+{
+ u16 fc = IEEE802154_FC_TYPE_ACK;
+ u8 *data;
+ struct sk_buff *ackskb;
+
+ BUG_ON(!skb || !skb->dev);
+ BUG_ON(!MAC_CB_IS_ACKREQ(skb));
+
+ ackskb = alloc_skb(LL_ALLOCATED_SPACE(skb->dev) + 3, GFP_ATOMIC);
+
+ skb_reserve(ackskb, LL_RESERVED_SPACE(skb->dev));
+
+ skb_reset_network_header(ackskb);
+
+ data = skb_push(ackskb, 3);
+ data[0] = fc & 0xff;
+ data[1] = (fc >> 8) & 0xff;
+ data[2] = MAC_CB(skb)->seq;
+
+ skb_reset_mac_header(ackskb);
+
+ ackskb->dev = skb->dev;
+ pr_debug("ACK frame to %s device\n", skb->dev->name);
+ ackskb->protocol = htons(ETH_P_IEEE802154);
+ /* FIXME */
+
+ return dev_queue_xmit(ackskb);
+}
+
+static int ieee802154_process_beacon(struct net_device *dev, struct sk_buff *skb)
+{
+ int flags;
+ int ret;
+ ret = parse_beacon_frame(skb, NULL, &flags, NULL);
+
+ /* Here we have cb->sa = coordinator address, and PAN address */
+
+ if (ret < 0) {
+ ret = NET_RX_DROP;
+ goto fail;
+ }
+ dev_dbg(&dev->dev, "got beacon from pan %d\n", MAC_CB(skb)->sa.pan_id);
+ ieee802154_beacon_hash_add(&MAC_CB(skb)->sa);
+ ieee802154_beacon_hash_dump();
+ ret = NET_RX_SUCCESS;
+fail:
+ kfree_skb(skb);
+ return ret;
+}
+
+static int ieee802154_process_ack(struct net_device *dev, struct sk_buff *skb)
+{
+ pr_debug("got ACK for SEQ=%d\n", MAC_CB(skb)->seq);
+
+ kfree_skb(skb);
+ return NET_RX_SUCCESS;
+}
+
+static int ieee802154_process_data(struct net_device *dev, struct sk_buff *skb)
+{
+ return netif_rx(skb);
+}
+
+static int ieee802154_subif_frame(struct ieee802154_netdev_priv *ndp, struct sk_buff *skb)
+{
+ pr_debug("%s Getting packet via slave interface %s\n",
+ __func__, ndp->dev->name);
+
+ switch (MAC_CB(skb)->da.addr_type) {
+ case IEEE802154_ADDR_NONE:
+ if (MAC_CB(skb)->sa.addr_type != IEEE802154_ADDR_NONE)
+ /* FIXME: check if we are PAN coordinator :) */
+ skb->pkt_type = PACKET_OTHERHOST;
+ else
+ /* ACK comes with both addresses empty */
+ skb->pkt_type = PACKET_HOST;
+ break;
+ case IEEE802154_ADDR_LONG:
+ if (MAC_CB(skb)->da.pan_id != ndp->pan_id && MAC_CB(skb)->da.pan_id != IEEE802154_PANID_BROADCAST)
+ skb->pkt_type = PACKET_OTHERHOST;
+ else if (!memcmp(MAC_CB(skb)->da.hwaddr, ndp->dev->dev_addr, IEEE802154_ADDR_LEN))
+ skb->pkt_type = PACKET_HOST;
+ else if (!memcmp(MAC_CB(skb)->da.hwaddr, ndp->dev->broadcast, IEEE802154_ADDR_LEN))
+ /* FIXME: is this correct? */
+ skb->pkt_type = PACKET_BROADCAST;
+ else
+ skb->pkt_type = PACKET_OTHERHOST;
+ break;
+ case IEEE802154_ADDR_SHORT:
+ if (MAC_CB(skb)->da.pan_id != ndp->pan_id && MAC_CB(skb)->da.pan_id != IEEE802154_PANID_BROADCAST)
+ skb->pkt_type = PACKET_OTHERHOST;
+ else if (MAC_CB(skb)->da.short_addr == ndp->short_addr)
+ skb->pkt_type = PACKET_HOST;
+ else if (MAC_CB(skb)->da.short_addr == IEEE802154_ADDR_BROADCAST)
+ skb->pkt_type = PACKET_BROADCAST;
+ else
+ skb->pkt_type = PACKET_OTHERHOST;
+ break;
+ }
+
+ skb->dev = ndp->dev;
+
+ if (MAC_CB_IS_ACKREQ(skb))
+ ieee802154_send_ack(skb);
+
+ switch (MAC_CB_TYPE(skb)) {
+ case IEEE802154_FC_TYPE_BEACON:
+ return ieee802154_process_beacon(ndp->dev, skb);
+ case IEEE802154_FC_TYPE_ACK:
+ return ieee802154_process_ack(ndp->dev, skb);
+ case IEEE802154_FC_TYPE_MAC_CMD:
+ return ieee802154_process_cmd(ndp->dev, skb);
+ case IEEE802154_FC_TYPE_DATA:
+ return ieee802154_process_data(ndp->dev, skb);
+ default:
+ pr_warning("ieee802154: Bad frame received (type = %d)\n", MAC_CB_TYPE(skb));
+ kfree_skb(skb);
+ return NET_RX_DROP;
+ }
+}
+
+static u8 fetch_skb_u8(struct sk_buff *skb)
+{
+ u8 ret;
+
+ BUG_ON(skb->len < 1);
+
+ ret = skb->data[0];
+ skb_pull(skb, 1);
+
+ return ret;
+}
+
+static u16 fetch_skb_u16(struct sk_buff *skb)
+{
+ u16 ret;
+
+ BUG_ON(skb->len < 2);
+
+ ret = skb->data[0] + (skb->data[1] * 256);
+ skb_pull(skb, 2);
+ return ret;
+}
+
+static void fetch_skb_u64(struct sk_buff *skb, void *data)
+{
+ BUG_ON(skb->len < IEEE802154_ADDR_LEN);
+
+ memcpy(data, skb->data, IEEE802154_ADDR_LEN);
+ skb_pull(skb, IEEE802154_ADDR_LEN);
+}
+
+#define IEEE802154_FETCH_U8(skb, var) \
+ do { \
+ if (skb->len < 1) \
+ goto exit_error; \
+ var = fetch_skb_u8(skb); \
+ } while (0)
+
+#define IEEE802154_FETCH_U16(skb, var) \
+ do { \
+ if (skb->len < 2) \
+ goto exit_error; \
+ var = fetch_skb_u16(skb); \
+ } while (0)
+
+#define IEEE802154_FETCH_U64(skb, var) \
+ do { \
+ if (skb->len < IEEE802154_ADDR_LEN) \
+ goto exit_error; \
+ fetch_skb_u64(skb, &var); \
+ } while (0)
+
+static int parse_frame_start(struct sk_buff *skb)
+{
+ u8 *head = skb->data;
+ u16 fc;
+
+ if (skb->len < 3) {
+ pr_debug("frame size %d bytes is too short\n", skb->len);
+ return -EINVAL;
+ }
+
+ IEEE802154_FETCH_U16(skb, fc);
+ IEEE802154_FETCH_U8(skb, MAC_CB(skb)->seq);
+
+ pr_debug("%s: %04x dsn%02x\n", __func__, fc, head[2]);
+
+ MAC_CB(skb)->flags = IEEE802154_FC_TYPE(fc);
+
+ if (fc & IEEE802154_FC_ACK_REQ) {
+ pr_debug("%s(): ACKNOWLEDGE required\n", __func__);
+ MAC_CB(skb)->flags |= MAC_CB_FLAG_ACKREQ;
+ }
+
+ if (fc & IEEE802154_FC_SECEN)
+ MAC_CB(skb)->flags |= MAC_CB_FLAG_SECEN;
+
+ if (fc & IEEE802154_FC_INTRA_PAN)
+ MAC_CB(skb)->flags |= MAC_CB_FLAG_INTRAPAN;
+
+ /* TODO */
+ if (MAC_CB_IS_SECEN(skb)) {
+ pr_info("security support is not implemented\n");
+ return -EINVAL;
+ }
+
+ MAC_CB(skb)->sa.addr_type = IEEE802154_FC_SAMODE(fc);
+ if (MAC_CB(skb)->sa.addr_type == IEEE802154_ADDR_NONE)
+ pr_debug("%s(): src addr_type is NONE\n", __func__);
+
+ MAC_CB(skb)->da.addr_type = IEEE802154_FC_DAMODE(fc);
+ if (MAC_CB(skb)->da.addr_type == IEEE802154_ADDR_NONE)
+ pr_debug("%s(): dst addr_type is NONE\n", __func__);
+
+ if (IEEE802154_FC_TYPE(fc) == IEEE802154_FC_TYPE_ACK) {
+ /* ACK can only have NONE-type addresses */
+ if (MAC_CB(skb)->sa.addr_type != IEEE802154_ADDR_NONE ||
+ MAC_CB(skb)->da.addr_type != IEEE802154_ADDR_NONE)
+ return -EINVAL;
+ }
+
+ if (MAC_CB(skb)->da.addr_type != IEEE802154_ADDR_NONE) {
+ IEEE802154_FETCH_U16(skb, MAC_CB(skb)->da.pan_id);
+
+ if (MAC_CB_IS_INTRAPAN(skb)) { /* ! panid compress */
+ pr_debug("%s(): src IEEE802154_FC_INTRA_PAN\n", __func__);
+ MAC_CB(skb)->sa.pan_id = MAC_CB(skb)->da.pan_id;
+ pr_debug("%s(): src PAN address %04x\n",
+ __func__, MAC_CB(skb)->sa.pan_id);
+ }
+
+ pr_debug("%s(): dst PAN address %04x\n",
+ __func__, MAC_CB(skb)->da.pan_id);
+
+ if (MAC_CB(skb)->da.addr_type == IEEE802154_ADDR_SHORT) {
+ IEEE802154_FETCH_U16(skb, MAC_CB(skb)->da.short_addr);
+ pr_debug("%s(): dst SHORT address %04x\n",
+ __func__, MAC_CB(skb)->da.short_addr);
+
+ } else {
+ IEEE802154_FETCH_U64(skb, MAC_CB(skb)->da.hwaddr);
+ pr_debug("%s(): dst hardware addr\n", __func__);
+ }
+ }
+
+ if (MAC_CB(skb)->sa.addr_type != IEEE802154_ADDR_NONE) {
+ pr_debug("%s(): got src non-NONE address\n", __func__);
+ if (!(MAC_CB_IS_INTRAPAN(skb))) { /* ! panid compress */
+ IEEE802154_FETCH_U16(skb, MAC_CB(skb)->sa.pan_id);
+ pr_debug("%s(): src IEEE802154_FC_INTRA_PAN\n", __func__);
+ }
+
+ if (MAC_CB(skb)->sa.addr_type == IEEE802154_ADDR_SHORT) {
+ IEEE802154_FETCH_U16(skb, MAC_CB(skb)->sa.short_addr);
+ pr_debug("%s(): src IEEE802154_ADDR_SHORT\n", __func__);
+ } else {
+ IEEE802154_FETCH_U64(skb, MAC_CB(skb)->sa.hwaddr);
+ pr_debug("%s(): src hardware addr\n", __func__);
+ }
+ }
+
+ return 0;
+
+exit_error:
+ return -EINVAL;
+}
+
+void ieee802154_subif_rx(struct ieee802154_dev *hw, struct sk_buff *skb)
+{
+ struct ieee802154_priv *priv = ieee802154_to_priv(hw);
+ struct ieee802154_netdev_priv *ndp, *prev = NULL;
+ int ret;
+
+ BUILD_BUG_ON(sizeof(struct ieee802154_mac_cb) > sizeof(skb->cb));
+ pr_debug("%s()\n", __func__);
+
+ ret = parse_frame_start(skb); /* 3 bytes pulled after this */
+ if (ret) {
+ pr_debug("%s(): Got invalid frame\n", __func__);
+ goto out;
+ }
+
+ if (!(priv->hw.flags & IEEE802154_FLAGS_OMIT_CKSUM)) {
+ if (skb->len < 2) {
+ pr_debug("%s(): Got invalid frame\n", __func__);
+ goto out;
+ }
+ /* FIXME: check CRC if necessary */
+ skb_trim(skb, skb->len - 2); /* CRC */
+ }
+
+ pr_debug("%s() frame %d\n", __func__, MAC_CB_TYPE(skb));
+
+ spin_lock(&priv->slaves_lock);
+ list_for_each_entry(ndp, &priv->slaves, list)
+ {
+ if (prev) {
+ struct sk_buff *skb2 = skb_clone(skb, GFP_ATOMIC);
+ if (skb2)
+ ieee802154_subif_frame(prev, skb2);
+ }
+
+ prev = ndp;
+ }
+
+ if (prev)
+ ieee802154_subif_frame(prev, skb);
+ else
+ kfree_skb(skb);
+ spin_unlock(&priv->slaves_lock);
+
+ return;
+
+out:
+ kfree_skb(skb);
+ return;
+}
+
+u16 ieee802154_dev_get_pan_id(struct net_device *dev)
+{
+ struct ieee802154_netdev_priv *priv = netdev_priv(dev);
+
+ BUG_ON(dev->type != ARPHRD_IEEE802154);
+
+ return priv->pan_id;
+}
+
+u16 ieee802154_dev_get_short_addr(struct net_device *dev)
+{
+ struct ieee802154_netdev_priv *priv = netdev_priv(dev);
+
+ BUG_ON(dev->type != ARPHRD_IEEE802154);
+
+ return priv->short_addr;
+}
+
+void ieee802154_dev_set_pan_id(struct net_device *dev, u16 val)
+{
+ struct ieee802154_netdev_priv *priv = netdev_priv(dev);
+
+ BUG_ON(dev->type != ARPHRD_IEEE802154);
+
+ priv->pan_id = val;
+}
+void ieee802154_dev_set_short_addr(struct net_device *dev, u16 val)
+{
+ struct ieee802154_netdev_priv *priv = netdev_priv(dev);
+
+ BUG_ON(dev->type != ARPHRD_IEEE802154);
+
+ priv->short_addr = val;
+}
+void ieee802154_dev_set_channel(struct net_device *dev, u8 val)
+{
+ struct ieee802154_netdev_priv *priv = netdev_priv(dev);
+
+ BUG_ON(dev->type != ARPHRD_IEEE802154);
+
+ priv->chan = val;
+}
+
+u8 ieee802154_dev_get_dsn(struct net_device *dev)
+{
+ struct ieee802154_netdev_priv *priv = netdev_priv(dev);
+
+ BUG_ON(dev->type != ARPHRD_IEEE802154);
+
+ return priv->dsn++;
+}
+
+u8 ieee802154_dev_get_bsn(struct net_device *dev)
+{
+ struct ieee802154_netdev_priv *priv = netdev_priv(dev);
+
+ BUG_ON(dev->type != ARPHRD_IEEE802154);
+
+ return priv->bsn++;
+}
+
+int ieee802154_slave_register_notifier(struct net_device *dev, struct notifier_block *nb)
+{
+ struct ieee802154_netdev_priv *priv = netdev_priv(dev);
+ return blocking_notifier_chain_register(&priv->events, nb);
+}
+int ieee802154_slave_unregister_notifier(struct net_device *dev, struct notifier_block *nb)
+{
+ struct ieee802154_netdev_priv *priv = netdev_priv(dev);
+ return blocking_notifier_chain_unregister(&priv->events, nb);
+}
+int ieee802154_slave_event(struct net_device *dev, int event, void *data)
+{
+ struct ieee802154_netdev_priv *priv = netdev_priv(dev);
+ return blocking_notifier_call_chain(&priv->events, event, data);
+}
+
+struct ieee802154_priv *ieee802154_slave_get_priv(struct net_device *dev)
+{
+ struct ieee802154_netdev_priv *priv = netdev_priv(dev);
+ BUG_ON(dev->type != ARPHRD_IEEE802154);
+
+ return priv->hw;
+}
diff --git a/net/mac802154/mac802154.h b/net/mac802154/mac802154.h
new file mode 100644
index 0000000..2f346cd
--- /dev/null
+++ b/net/mac802154/mac802154.h
@@ -0,0 +1,64 @@
+/*
+ * Copyright (C) 2007, 2008 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.
+ *
+ * Written by:
+ * Pavel Smolenskiy <pavel.smolenskiy@...il.com>
+ * Maxim Gorbachyov <maxim.gorbachev@...mens.com>
+ * Dmitry Eremin-Solenikov <dbaryshkov@...il.com>
+ */
+#ifndef MAC802154_H
+#define MAC802154_H
+
+struct ieee802154_priv {
+ struct ieee802154_dev hw;
+ struct ieee802154_ops *ops;
+ struct list_head slaves;
+ spinlock_t slaves_lock;
+ /* This one is used for scanning and other
+ * jobs not to be interfered with serial driver */
+ struct workqueue_struct *dev_workqueue;
+};
+
+#define ieee802154_to_priv(_hw) container_of(_hw, struct ieee802154_priv, hw)
+
+void ieee802154_drop_slaves(struct ieee802154_dev *hw);
+
+void ieee802154_subif_rx(struct ieee802154_dev *hw, struct sk_buff *skb);
+
+struct ieee802154_phy_cb {
+ u8 lqi;
+ u8 chan;
+};
+
+#define PHY_CB(skb) ((struct ieee802154_phy_cb *)(skb)->cb)
+
+extern struct ieee802154_mlme_ops mac802154_mlme;
+
+int ieee802154_mlme_scan_req(struct net_device *dev, u8 type, u32 channels, u8 duration);
+
+int ieee802154_process_cmd(struct net_device *dev, struct sk_buff *skb);
+int ieee802154_send_beacon_req(struct net_device *dev);
+
+struct ieee802154_priv *ieee802154_slave_get_priv(struct net_device *dev);
+
+/* FIXME: this interface should be rethought ! */
+struct notifier_block;
+int ieee802154_slave_register_notifier(struct net_device *dev, struct notifier_block *nb);
+int ieee802154_slave_unregister_notifier(struct net_device *dev, struct notifier_block *nb);
+int ieee802154_slave_event(struct net_device *dev, int event, void *data);
+#define IEEE802154_NOTIFIER_BEACON 0x0
+
+#endif
diff --git a/net/mac802154/mac_cmd.c b/net/mac802154/mac_cmd.c
new file mode 100644
index 0000000..0be38fb
--- /dev/null
+++ b/net/mac802154/mac_cmd.c
@@ -0,0 +1,325 @@
+/*
+ * MAC commands interface
+ *
+ * Copyright 2007, 2008 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.
+ *
+ * Written by:
+ * Sergey Lapin <sergey.lapin@...mens.com>
+ * Dmitry Eremin-Solenikov <dbaryshkov@...il.com>
+ */
+
+#include <linux/kernel.h>
+#include <linux/skbuff.h>
+#include <linux/if_arp.h>
+#include <net/ieee802154/af_ieee802154.h>
+#include <net/ieee802154/mac802154.h>
+#include <net/ieee802154/mac_def.h>
+#include <net/ieee802154/netdevice.h>
+#include <net/ieee802154/nl802154.h>
+
+#include "mac802154.h"
+#include "beacon.h"
+#include "mib.h"
+
+static int ieee802154_cmd_beacon_req(struct sk_buff *skb)
+{
+ struct ieee802154_addr saddr; /* jeez */
+ int flags = 0;
+ if (skb->len != 1)
+ return -EINVAL;
+
+ if (skb->pkt_type != PACKET_HOST)
+ return 0;
+
+ /* Checking if we're really PAN coordinator
+ * before sending beacons */
+ if (!(skb->dev->priv_flags & IFF_IEEE802154_COORD))
+ return 0;
+
+ if (MAC_CB(skb)->sa.addr_type != IEEE802154_ADDR_NONE ||
+ MAC_CB(skb)->da.addr_type != IEEE802154_ADDR_SHORT ||
+ MAC_CB(skb)->da.pan_id != IEEE802154_PANID_BROADCAST ||
+ MAC_CB(skb)->da.short_addr != IEEE802154_ADDR_BROADCAST)
+ return -EINVAL;
+
+
+ /* 7 bytes of MHR and 1 byte of command frame identifier
+ * We have no information in this command to proceed with.
+ * we need to submit beacon as answer to this. */
+
+ return ieee802154_send_beacon(skb->dev, &saddr, IEEE802154_MLME_OPS(skb->dev)->get_pan_id(skb->dev),
+ NULL, 0, flags, NULL);
+}
+
+static int ieee802154_cmd_assoc_req(struct sk_buff *skb)
+{
+ u8 cap;
+
+ if (skb->len != 2)
+ return -EINVAL;
+
+ if (skb->pkt_type != PACKET_HOST)
+ return 0;
+
+ if (MAC_CB(skb)->sa.addr_type != IEEE802154_ADDR_LONG ||
+ MAC_CB(skb)->sa.pan_id != IEEE802154_PANID_BROADCAST)
+ return -EINVAL;
+
+ /* FIXME: check that we allow incoming ASSOC requests by consulting MIB */
+
+ cap = skb->data[1];
+
+ return ieee802154_nl_assoc_indic(skb->dev, &MAC_CB(skb)->sa, cap);
+}
+
+static int ieee802154_cmd_assoc_resp(struct sk_buff *skb)
+{
+ u8 status;
+ u16 short_addr;
+
+ if (skb->len != 4)
+ return -EINVAL;
+
+ if (skb->pkt_type != PACKET_HOST)
+ return 0;
+
+ if (MAC_CB(skb)->sa.addr_type != IEEE802154_ADDR_LONG ||
+ MAC_CB(skb)->sa.addr_type != IEEE802154_ADDR_LONG ||
+ !(MAC_CB(skb)->flags & MAC_CB_FLAG_INTRAPAN))
+ return -EINVAL;
+
+ /* FIXME: check that we requested association ? */
+
+ status = skb->data[3];
+ short_addr = skb->data[1] | (skb->data[2] << 8);
+ pr_info("Received ASSOC-RESP status %x, addr %hx\n", status, short_addr);
+ if (status) {
+ ieee802154_dev_set_short_addr(skb->dev, IEEE802154_ADDR_BROADCAST);
+ ieee802154_dev_set_pan_id(skb->dev, IEEE802154_PANID_BROADCAST);
+ } else
+ ieee802154_dev_set_short_addr(skb->dev, short_addr);
+
+ return ieee802154_nl_assoc_confirm(skb->dev, short_addr, status);
+}
+
+static int ieee802154_cmd_disassoc_notify(struct sk_buff *skb)
+{
+ u8 reason;
+
+ if (skb->len != 2)
+ return -EINVAL;
+
+ if (skb->pkt_type != PACKET_HOST)
+ return 0;
+
+ if (MAC_CB(skb)->sa.addr_type != IEEE802154_ADDR_LONG ||
+ (MAC_CB(skb)->da.addr_type != IEEE802154_ADDR_LONG &&
+ MAC_CB(skb)->da.addr_type != IEEE802154_ADDR_SHORT) ||
+ MAC_CB(skb)->sa.pan_id != MAC_CB(skb)->da.pan_id)
+ return -EINVAL;
+
+ reason = skb->data[1];
+
+ /* FIXME: checks if this was our coordinator and the disassoc us */
+ /* FIXME: if we device, one should receive ->da and not ->sa */
+ /* FIXME: the status should also help */
+
+ return ieee802154_nl_disassoc_indic(skb->dev, &MAC_CB(skb)->sa, reason);
+}
+
+int ieee802154_process_cmd(struct net_device *dev, struct sk_buff *skb)
+{
+ u8 cmd;
+
+ if (skb->len < 1) {
+ pr_warning("Uncomplete command frame!\n");
+ goto drop;
+ }
+
+ cmd = *(skb->data);
+ pr_debug("Command %02x on device %s\n", cmd, dev->name);
+
+ switch (cmd) {
+ case IEEE802154_CMD_ASSOCIATION_REQ:
+ ieee802154_cmd_assoc_req(skb);
+ break;
+ case IEEE802154_CMD_ASSOCIATION_RESP:
+ ieee802154_cmd_assoc_resp(skb);
+ break;
+ case IEEE802154_CMD_DISASSOCIATION_NOTIFY:
+ ieee802154_cmd_disassoc_notify(skb);
+ break;
+ case IEEE802154_CMD_BEACON_REQ:
+ ieee802154_cmd_beacon_req(skb);
+ break;
+ default:
+ pr_debug("Frame type is not supported yet\n");
+ goto drop;
+ }
+
+
+ kfree_skb(skb);
+ return NET_RX_SUCCESS;
+
+drop:
+ kfree_skb(skb);
+ return NET_RX_DROP;
+}
+
+static int ieee802154_send_cmd(struct net_device *dev,
+ struct ieee802154_addr *addr, struct ieee802154_addr *saddr,
+ const u8 *buf, int len)
+{
+ struct sk_buff *skb;
+ int err;
+
+ BUG_ON(dev->type != ARPHRD_IEEE802154);
+
+ skb = alloc_skb(LL_ALLOCATED_SPACE(dev) + len, GFP_KERNEL);
+ if (!skb)
+ return -ENOMEM;
+
+ skb_reserve(skb, LL_RESERVED_SPACE(dev));
+
+ skb_reset_network_header(skb);
+
+ MAC_CB(skb)->flags = IEEE802154_FC_TYPE_MAC_CMD | MAC_CB_FLAG_ACKREQ;
+ MAC_CB(skb)->seq = IEEE802154_MLME_OPS(dev)->get_dsn(dev);
+ err = dev_hard_header(skb, dev, ETH_P_IEEE802154, addr, saddr, len);
+ if (err < 0) {
+ kfree_skb(skb);
+ return err;
+ }
+
+ skb_reset_mac_header(skb);
+ memcpy(skb_put(skb, len), buf, len);
+
+ skb->dev = dev;
+ skb->protocol = htons(ETH_P_IEEE802154);
+
+ return dev_queue_xmit(skb);
+}
+
+int ieee802154_send_beacon_req(struct net_device *dev)
+{
+ struct ieee802154_addr addr;
+ struct ieee802154_addr saddr;
+ u8 cmd = IEEE802154_CMD_BEACON_REQ;
+ addr.addr_type = IEEE802154_ADDR_SHORT;
+ addr.short_addr = IEEE802154_ADDR_BROADCAST;
+ addr.pan_id = IEEE802154_PANID_BROADCAST;
+ saddr.addr_type = IEEE802154_ADDR_NONE;
+ return ieee802154_send_cmd(dev, &addr, &saddr, &cmd, 1);
+}
+
+
+static int ieee802154_mlme_assoc_req(struct net_device *dev, struct ieee802154_addr *addr, u8 channel, u8 cap)
+{
+ struct ieee802154_addr saddr;
+ u8 buf[2];
+ int pos = 0;
+
+ saddr.addr_type = IEEE802154_ADDR_LONG;
+ saddr.pan_id = IEEE802154_PANID_BROADCAST;
+ memcpy(saddr.hwaddr, dev->dev_addr, IEEE802154_ADDR_LEN);
+
+
+ /* FIXME: set PIB/MIB info */
+ ieee802154_dev_set_pan_id(dev, addr->pan_id);
+ ieee802154_dev_set_channel(dev, channel);
+
+ buf[pos++] = IEEE802154_CMD_ASSOCIATION_REQ;
+ buf[pos++] = cap;
+
+ return ieee802154_send_cmd(dev, addr, &saddr, buf, pos);
+}
+
+static int ieee802154_mlme_assoc_resp(struct net_device *dev, struct ieee802154_addr *addr, u16 short_addr, u8 status)
+{
+ struct ieee802154_addr saddr;
+ u8 buf[4];
+ int pos = 0;
+
+ saddr.addr_type = IEEE802154_ADDR_LONG;
+ saddr.pan_id = addr->pan_id;
+ memcpy(saddr.hwaddr, dev->dev_addr, IEEE802154_ADDR_LEN);
+
+ buf[pos++] = IEEE802154_CMD_ASSOCIATION_RESP;
+ buf[pos++] = short_addr;
+ buf[pos++] = short_addr >> 8;
+ buf[pos++] = status;
+
+ return ieee802154_send_cmd(dev, addr, &saddr, buf, pos);
+}
+
+static int ieee802154_mlme_disassoc_req(struct net_device *dev, struct ieee802154_addr *addr, u8 reason)
+{
+ struct ieee802154_addr saddr;
+ u8 buf[2];
+ int pos = 0;
+ int ret;
+
+ saddr.addr_type = IEEE802154_ADDR_LONG;
+ saddr.pan_id = addr->pan_id;
+ memcpy(saddr.hwaddr, dev->dev_addr, IEEE802154_ADDR_LEN);
+
+ buf[pos++] = IEEE802154_CMD_DISASSOCIATION_NOTIFY;
+ buf[pos++] = reason;
+
+ ret = ieee802154_send_cmd(dev, addr, &saddr, buf, pos);
+
+ /* FIXME: this should be after the ack receved */
+ ieee802154_dev_set_pan_id(dev, 0xffff);
+ ieee802154_dev_set_short_addr(dev, 0xffff);
+ ieee802154_nl_disassoc_confirm(dev, 0x00);
+
+ return ret;
+}
+
+static int ieee802154_mlme_start_req(struct net_device *dev, struct ieee802154_addr *addr,
+ u8 channel,
+ u8 bcn_ord, u8 sf_ord, u8 pan_coord, u8 blx,
+ u8 coord_realign)
+{
+ BUG_ON(addr->addr_type != IEEE802154_ADDR_SHORT);
+
+ ieee802154_dev_set_pan_id(dev, addr->pan_id);
+ ieee802154_dev_set_short_addr(dev, addr->short_addr);
+ ieee802154_dev_set_channel(dev, channel);
+
+ /* FIXME: add validation for unused parameters to be sane for SoftMAC */
+
+ if (pan_coord)
+ dev->priv_flags |= IFF_IEEE802154_COORD;
+ else
+ dev->priv_flags &= ~IFF_IEEE802154_COORD;
+
+ return 0;
+}
+
+struct ieee802154_mlme_ops mac802154_mlme = {
+ .assoc_req = ieee802154_mlme_assoc_req,
+ .assoc_resp = ieee802154_mlme_assoc_resp,
+ .disassoc_req = ieee802154_mlme_disassoc_req,
+ .start_req = ieee802154_mlme_start_req,
+ .scan_req = ieee802154_mlme_scan_req,
+
+ .get_pan_id = ieee802154_dev_get_pan_id,
+ .get_short_addr = ieee802154_dev_get_short_addr,
+ .get_dsn = ieee802154_dev_get_dsn,
+ .get_bsn = ieee802154_dev_get_bsn,
+};
+
diff --git a/net/mac802154/main.c b/net/mac802154/main.c
new file mode 100644
index 0000000..1dbace4
--- /dev/null
+++ b/net/mac802154/main.c
@@ -0,0 +1,96 @@
+/*
+ * 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.
+ *
+ * Written by:
+ * Pavel Smolenskiy <pavel.smolenskiy@...il.com>
+ * Maxim Gorbachyov <maxim.gorbachev@...mens.com>
+ * Dmitry Eremin-Solenikov <dbaryshkov@...il.com>
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/workqueue.h>
+#include <linux/netdevice.h>
+
+#include <net/ieee802154/mac802154.h>
+
+#include "mac802154.h"
+
+static void __ieee802154_rx_prepare(struct ieee802154_dev *dev, struct sk_buff *skb, u8 lqi)
+{
+ struct ieee802154_priv *priv = ieee802154_to_priv(dev);
+
+ BUG_ON(!skb);
+
+ PHY_CB(skb)->lqi = lqi;
+
+ skb->dev = priv->hw.netdev;
+
+ skb->iif = skb->dev->ifindex;
+
+ skb->protocol = htons(ETH_P_IEEE802154);
+
+ skb_reset_mac_header(skb);
+}
+
+void ieee802154_rx(struct ieee802154_dev *dev, struct sk_buff *skb, u8 lqi)
+{
+ struct sk_buff *skb2;
+
+ __ieee802154_rx_prepare(dev, skb, lqi);
+
+ skb2 = skb_clone(skb, GFP_KERNEL);
+ netif_rx(skb2);
+
+ ieee802154_subif_rx(dev, skb);
+}
+EXPORT_SYMBOL(ieee802154_rx);
+
+struct rx_work {
+ struct sk_buff *skb;
+ struct work_struct work;
+ struct ieee802154_dev *dev;
+};
+
+static void ieee802154_rx_worker(struct work_struct *work)
+{
+ struct rx_work *rw = container_of(work, struct rx_work, work);
+ struct sk_buff *skb = rw->skb;
+
+ struct sk_buff *skb2 = skb_clone(skb, GFP_KERNEL);
+ netif_rx(skb2);
+
+ ieee802154_subif_rx(rw->dev, skb);
+ kfree(rw);
+}
+
+void ieee802154_rx_irqsafe(struct ieee802154_dev *dev, struct sk_buff *skb, u8 lqi)
+{
+ struct ieee802154_priv *priv = ieee802154_to_priv(dev);
+ struct rx_work *work = kzalloc(sizeof(struct rx_work), GFP_ATOMIC);
+
+ if (!work)
+ return;
+
+ __ieee802154_rx_prepare(dev, skb, lqi);
+
+ INIT_WORK(&work->work, ieee802154_rx_worker);
+ work->skb = skb;
+ work->dev = dev;
+
+ queue_work(priv->dev_workqueue, &work->work);
+}
+EXPORT_SYMBOL(ieee802154_rx_irqsafe);
diff --git a/net/mac802154/mdev.c b/net/mac802154/mdev.c
new file mode 100644
index 0000000..3bebe22
--- /dev/null
+++ b/net/mac802154/mdev.c
@@ -0,0 +1,283 @@
+/*
+ * Copyright (C) 2007, 2008 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.
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/netdevice.h>
+#include <linux/if_arp.h>
+
+#include <net/ieee802154/af_ieee802154.h>
+#include <net/ieee802154/mac802154.h>
+
+#include "mac802154.h"
+
+struct xmit_work {
+ struct sk_buff *skb;
+ struct work_struct work;
+ struct ieee802154_priv *priv;
+};
+
+static void ieee802154_xmit_worker(struct work_struct *work)
+{
+ struct xmit_work *xw = container_of(work, struct xmit_work, work);
+ phy_status_t res;
+
+ if (xw->priv->hw.current_channel != PHY_CB(xw->skb)->chan) {
+ res = xw->priv->ops->set_channel(&xw->priv->hw, PHY_CB(xw->skb)->chan);
+ if (res != PHY_SUCCESS) {
+ pr_debug("set_channel failed\n");
+ goto out;
+ }
+ }
+
+ res = xw->priv->ops->cca(&xw->priv->hw);
+ if (res != PHY_IDLE) {
+ pr_debug("CCA failed\n");
+ goto out;
+ }
+
+ res = xw->priv->ops->set_trx_state(&xw->priv->hw, PHY_TX_ON);
+ if (res != PHY_SUCCESS && res != PHY_TX_ON) {
+ pr_debug("set_trx_state returned %d\n", res);
+ goto out;
+ }
+
+ res = xw->priv->ops->tx(&xw->priv->hw, xw->skb);
+
+out:
+ /* FIXME: result processing and/or requeue!!! */
+ dev_kfree_skb(xw->skb);
+
+ xw->priv->ops->set_trx_state(&xw->priv->hw, PHY_RX_ON);
+ kfree(xw);
+}
+
+static int ieee802154_master_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
+{
+ struct ieee802154_priv *priv = netdev_priv(dev);
+ struct xmit_work *work;
+
+ if (skb_cow_head(skb, priv->hw.extra_tx_headroom)) {
+ dev_kfree_skb(skb);
+ return NETDEV_TX_OK;
+ }
+
+ work = kzalloc(sizeof(struct xmit_work), GFP_ATOMIC);
+ if (!work)
+ return NETDEV_TX_BUSY;
+
+ INIT_WORK(&work->work, ieee802154_xmit_worker);
+ work->skb = skb;
+ work->priv = priv;
+
+ queue_work(priv->dev_workqueue, &work->work);
+
+ return NETDEV_TX_OK;
+}
+
+static int ieee802154_master_open(struct net_device *dev)
+{
+ struct ieee802154_priv *priv;
+ phy_status_t status;
+ priv = netdev_priv(dev);
+ if (!priv) {
+ pr_debug("%s:%s: unable to get master private data\n",
+ __FILE__, __func__);
+ return -ENODEV;
+ }
+ status = priv->ops->set_trx_state(&priv->hw, PHY_RX_ON);
+ if (status != PHY_SUCCESS) {
+ pr_debug("set_trx_state returned %d\n", status);
+ return -EBUSY;
+ }
+
+ netif_start_queue(dev);
+ return 0;
+}
+
+static int ieee802154_master_close(struct net_device *dev)
+{
+ struct ieee802154_priv *priv;
+ netif_stop_queue(dev);
+ priv = netdev_priv(dev);
+
+ priv->ops->set_trx_state(&priv->hw, PHY_FORCE_TRX_OFF);
+ return 0;
+}
+static int ieee802154_master_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
+{
+ struct ieee802154_priv *priv = netdev_priv(dev);
+ switch (cmd) {
+ case IEEE802154_SIOC_ADD_SLAVE:
+ if (!capable(CAP_NET_ADMIN))
+ return -EPERM;
+ return ieee802154_add_slave(&priv->hw, (u8 *) &ifr->ifr_hwaddr.sa_data);
+ }
+ return -ENOIOCTLCMD;
+}
+
+static void ieee802154_netdev_setup_master(struct net_device *dev)
+{
+ dev->addr_len = 0;
+ memset(dev->broadcast, 0xff, dev->addr_len);
+ dev->features = NETIF_F_NO_CSUM;
+ dev->hard_header_len = 0;
+ dev->mtu = 127;
+ dev->tx_queue_len = 0;
+ dev->type = ARPHRD_IEEE802154_PHY;
+ dev->flags = IFF_NOARP | IFF_BROADCAST;
+ dev->watchdog_timeo = 0;
+}
+static ssize_t ieee802154_netdev_show(const struct device *dev,
+ struct device_attribute *attr, char *buf,
+ ssize_t (*format)(const struct net_device *, char *))
+{
+ struct net_device *netdev = to_net_dev(dev);
+ ssize_t ret = -EINVAL;
+
+ if (netdev->reg_state <= NETREG_REGISTERED)
+ ret = (*format)(netdev, buf);
+
+ return ret;
+}
+#define MASTER_SHOW(field, format_string) \
+static ssize_t format_##field(const struct net_device *dev, char *buf) \
+{ \
+ struct ieee802154_priv *priv = netdev_priv(dev); \
+ return sprintf(buf, format_string, priv->hw.field); \
+} \
+static ssize_t show_##field(struct device *dev, \
+ struct device_attribute *attr, char *buf) \
+{ \
+ return ieee802154_netdev_show(dev, attr, buf, format_##field); \
+} \
+static DEVICE_ATTR(field, S_IRUGO, show_##field, NULL)
+
+static const char fmt_long_hex[] = "%#lx\n";
+static const char fmt_hex[] = "%#x\n";
+static const char fmt_dec[] = "%d\n";
+
+MASTER_SHOW(current_channel, fmt_dec);
+MASTER_SHOW(channel_mask, fmt_hex);
+
+static struct attribute *pmib_attrs[] = {
+ &dev_attr_current_channel.attr,
+ &dev_attr_channel_mask.attr,
+ NULL
+};
+
+static struct attribute_group pmib_group = {
+ .name = "pib",
+ .attrs = pmib_attrs,
+};
+
+static const struct net_device_ops ieee802154_master_ops = {
+ .ndo_open = ieee802154_master_open,
+ .ndo_stop = ieee802154_master_close,
+ .ndo_start_xmit = ieee802154_master_hard_start_xmit,
+ .ndo_do_ioctl = ieee802154_master_ioctl,
+};
+
+static int ieee802154_register_netdev_master(struct ieee802154_priv *priv)
+{
+ struct net_device *dev = priv->hw.netdev;
+
+ dev->netdev_ops = &ieee802154_master_ops;
+ dev->needed_headroom = priv->hw.extra_tx_headroom;
+ SET_NETDEV_DEV(dev, priv->hw.parent);
+
+ dev->sysfs_groups[1] = &pmib_group;
+
+ register_netdev(dev);
+
+ return 0;
+}
+
+struct ieee802154_dev *ieee802154_alloc_device(void)
+{
+ struct net_device *dev;
+ struct ieee802154_priv *priv;
+
+ dev = alloc_netdev(sizeof(struct ieee802154_priv),
+ "mwpan%d", ieee802154_netdev_setup_master);
+ if (!dev) {
+ printk(KERN_ERR "Failure to initialize master IEEE802154 device\n");
+ return NULL;
+ }
+ priv = netdev_priv(dev);
+ priv->hw.netdev = dev;
+
+ INIT_LIST_HEAD(&priv->slaves);
+ spin_lock_init(&priv->slaves_lock);
+ return &priv->hw;
+}
+EXPORT_SYMBOL(ieee802154_alloc_device);
+
+void ieee802154_free_device(struct ieee802154_dev *hw)
+{
+ struct ieee802154_priv *priv = ieee802154_to_priv(hw);
+
+ BUG_ON(!list_empty(&priv->slaves));
+ BUG_ON(!priv->hw.netdev);
+
+ free_netdev(priv->hw.netdev);
+}
+EXPORT_SYMBOL(ieee802154_free_device);
+
+int ieee802154_register_device(struct ieee802154_dev *dev, struct ieee802154_ops *ops)
+{
+ struct ieee802154_priv *priv = ieee802154_to_priv(dev);
+ int rc;
+
+ if (!try_module_get(ops->owner))
+ return -EFAULT;
+
+ BUG_ON(!dev || !dev->name);
+ BUG_ON(!ops || !ops->tx || !ops->cca || !ops->ed || !ops->set_trx_state);
+
+ priv->ops = ops;
+ rc = ieee802154_register_netdev_master(priv);
+ if (rc < 0)
+ goto out;
+ priv->dev_workqueue = create_singlethread_workqueue(priv->hw.netdev->name);
+ if (!priv->dev_workqueue)
+ goto out_wq;
+
+ return 0;
+
+out_wq:
+ unregister_netdev(priv->hw.netdev);
+out:
+ return rc;
+}
+EXPORT_SYMBOL(ieee802154_register_device);
+
+void ieee802154_unregister_device(struct ieee802154_dev *dev)
+{
+ struct ieee802154_priv *priv = ieee802154_to_priv(dev);
+
+ ieee802154_drop_slaves(dev);
+ unregister_netdev(priv->hw.netdev);
+ flush_workqueue(priv->dev_workqueue);
+ destroy_workqueue(priv->dev_workqueue);
+ module_put(priv->ops->owner);
+}
+EXPORT_SYMBOL(ieee802154_unregister_device);
+
+MODULE_DESCRIPTION("IEEE 802.15.4 implementation");
+MODULE_LICENSE("GPL v2");
+
diff --git a/net/mac802154/mib.h b/net/mac802154/mib.h
new file mode 100644
index 0000000..57bf03f
--- /dev/null
+++ b/net/mac802154/mib.h
@@ -0,0 +1,32 @@
+/*
+ * Copyright 2008 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 MIB802154_H
+#define MIB802154_H
+
+/* FIXME: should be dropped in favour of generic MIB API */
+u8 ieee802154_dev_get_dsn(struct net_device *dev);
+u8 ieee802154_dev_get_bsn(struct net_device *dev);
+u16 ieee802154_dev_get_pan_id(struct net_device *dev);
+u16 ieee802154_dev_get_short_addr(struct net_device *dev);
+void ieee802154_dev_set_pan_id(struct net_device *dev, u16 val);
+void ieee802154_dev_set_short_addr(struct net_device *dev, u16 val);
+void ieee802154_dev_set_channel(struct net_device *dev, u8 chan);
+
+
+#endif
diff --git a/net/mac802154/pib.c b/net/mac802154/pib.c
new file mode 100644
index 0000000..29fc75e
--- /dev/null
+++ b/net/mac802154/pib.c
@@ -0,0 +1,87 @@
+/*
+ * Copyright 2008 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.
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/list.h>
+#include <linux/spinlock.h>
+#include <net/ieee802154/mac802154.h>
+
+#include "mac802154.h"
+#include "pib.h"
+
+int ieee802154_pib_set(struct ieee802154_dev *hw, struct ieee802154_pib *pib)
+{
+ int ret;
+ struct ieee802154_priv *priv = ieee802154_to_priv(hw);
+ BUG_ON(!hw);
+ BUG_ON(!pib);
+ switch (pib->type) {
+ case IEEE802154_PIB_CURCHAN:
+#warning this should go via usual workqueue!!!
+ /* Our internal mask is inverted
+ * 0 = channel is available
+ * 1 = channel is unavailable
+ * this saves initialization */
+ if (hw->channel_mask & (1 << (pib->val - 1)))
+ return -EINVAL;
+ ret = priv->ops->set_channel(hw, pib->val);
+ if (ret == PHY_ERROR)
+ return -EINVAL; /* FIXME */
+ hw->current_channel = pib->val;
+ break;
+ case IEEE802154_PIB_CHANSUPP:
+ hw->channel_mask = ~(pib->val);
+ break;
+ case IEEE802154_PIB_TRPWR:
+ /* TODO */
+ break;
+ case IEEE802154_PIB_CCAMODE:
+ /* TODO */
+ break;
+ default:
+ pr_debug("Unknown PIB type value\n");
+ return -ENOTSUPP;
+ }
+ return 0;
+}
+
+int ieee802154_pib_get(struct ieee802154_dev *hw, struct ieee802154_pib *pib)
+{
+ BUG_ON(!hw);
+ BUG_ON(!pib);
+ switch (pib->type) {
+ case IEEE802154_PIB_CURCHAN:
+ pib->val = hw->current_channel;
+ break;
+ case IEEE802154_PIB_CHANSUPP:
+ pib->val = ~(hw->channel_mask);
+ break;
+ case IEEE802154_PIB_TRPWR:
+ pib->val = 0;
+ break;
+ case IEEE802154_PIB_CCAMODE:
+ pib->val = 0;
+ break;
+ default:
+ pr_debug("Unknown PIB type value\n");
+ return -ENOTSUPP;
+ }
+ return 0;
+}
+
diff --git a/net/mac802154/pib.h b/net/mac802154/pib.h
new file mode 100644
index 0000000..6593fa1
--- /dev/null
+++ b/net/mac802154/pib.h
@@ -0,0 +1,35 @@
+/*
+ * Copyright 2008 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 PIB802154_H
+#define PIB802154_H
+
+struct ieee802154_pib {
+ int type;
+ u32 val;
+};
+
+#define IEEE802154_PIB_CURCHAN 0 /* Current channel, u8 6.1.2 */
+#define IEEE802154_PIB_CHANSUPP 1 /* Channel mask, u32 6.1.2 */
+#define IEEE802154_PIB_TRPWR 2 /* Transmit power, u8 6.4.2 */
+#define IEEE802154_PIB_CCAMODE 3 /* CCA mode, u8 6.7.9 */
+
+int ieee802154_pib_set(struct ieee802154_dev *hw, struct ieee802154_pib *pib);
+int ieee802154_pib_get(struct ieee802154_dev *hw, struct ieee802154_pib *pib);
+
+#endif
diff --git a/net/mac802154/scan.c b/net/mac802154/scan.c
new file mode 100644
index 0000000..89e0c9f
--- /dev/null
+++ b/net/mac802154/scan.c
@@ -0,0 +1,215 @@
+/*
+ * scan.c
+ *
+ * Description: MAC scan helper functions.
+ *
+ * Copyright (C) 2007, 2008 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.
+ *
+ * Written by:
+ * Pavel Smolenskiy <pavel.smolenskiy@...il.com>
+ * Maxim Gorbachyov <maxim.gorbachev@...mens.com>
+ */
+#include <linux/net.h>
+#include <linux/module.h>
+#include <linux/sched.h>
+
+#include <net/ieee802154/af_ieee802154.h>
+#include <net/ieee802154/mac802154.h>
+#include <net/ieee802154/nl802154.h>
+#include <net/ieee802154/mac_def.h>
+#include <net/ieee802154/netdevice.h>
+
+#include "mac802154.h"
+#include "beacon.h"
+
+/*
+ * ED scan is periodic issuing of ed device function
+ * on evry permitted channel, so it is virtually PHY-only scan */
+
+struct scan_work {
+ struct work_struct work;
+
+ int (*scan_ch)(struct scan_work *work, int channel, u8 duration);
+ struct net_device *dev;
+
+ u8 edl[27];
+
+ u8 type;
+ u32 channels;
+ u8 duration;
+};
+
+static int scan_ed(struct scan_work *work, int channel, u8 duration)
+{
+ int ret;
+ struct ieee802154_priv *hw = ieee802154_slave_get_priv(work->dev);
+ pr_debug("ed scan channel %d duration %d\n", channel, duration);
+ ret = hw->ops->ed(&hw->hw, &work->edl[channel]);
+ pr_debug("ed scan channel %d value %d\n", channel, work->edl[channel]);
+ return ret;
+}
+
+struct scan_data {
+ struct notifier_block nb;
+ struct list_head scan_head;
+};
+
+static int beacon_notifier(struct notifier_block *p,
+ unsigned long event, void *data)
+{
+ struct ieee802154_pandsc *pd = data;
+ struct scan_data *sd = container_of(p, struct scan_data, nb);
+ switch (event) {
+ case IEEE802154_NOTIFIER_BEACON:
+ /* TODO: add item to list here */
+ pr_debug("got a beacon frame addr_type %d pan_id %d\n",
+ pd->addr.addr_type, pd->addr.pan_id);
+ break;
+ }
+ return 0;
+}
+
+
+static int scan_passive(struct scan_work *work, int channel, u8 duration)
+{
+ unsigned long j;
+ struct scan_data *data = kzalloc(sizeof(struct scan_data), GFP_KERNEL);
+ pr_debug("passive scan channel %d duration %d\n", channel, duration);
+ data->nb.notifier_call = beacon_notifier;
+ ieee802154_slave_register_notifier(work->dev, &data->nb);
+ /* Hope 2 msecs will be enough for scan */
+ j = msecs_to_jiffies(2);
+ while (j > 0)
+ j = schedule_timeout(j);
+
+ ieee802154_slave_unregister_notifier(work->dev, &data->nb);
+ kfree(data);
+ return PHY_SUCCESS;
+}
+
+/* Active scan is periodic submission of beacon request
+ * and waiting for beacons which is useful for collecting LWPAN information */
+static int scan_active(struct scan_work *work, int channel, u8 duration)
+{
+ int ret;
+ pr_debug("active scan channel %d duration %d\n", channel, duration);
+ ret = ieee802154_send_beacon_req(work->dev);
+ if (ret < 0)
+ return PHY_ERROR;
+ return scan_passive(work, channel, duration);
+}
+
+static int scan_orphan(struct scan_work *work, int channel, u8 duration)
+{
+ pr_debug("orphan scan channel %d duration %d\n", channel, duration);
+ return 0;
+}
+
+static void scanner(struct work_struct *work)
+{
+ struct scan_work *sw = container_of(work, struct scan_work, work);
+ struct ieee802154_priv *hw = ieee802154_slave_get_priv(sw->dev);
+ int i;
+ phy_status_t ret;
+
+ for (i = 0; i < 27; i++) {
+ if (!(sw->channels & (1 << i)))
+ continue;
+
+ ret = hw->ops->set_channel(&hw->hw, i);
+ if (ret != PHY_SUCCESS)
+ goto exit_error;
+
+ ret = sw->scan_ch(sw, i, sw->duration);
+ if (ret != PHY_SUCCESS)
+ goto exit_error;
+
+ sw->channels &= ~(1 << i);
+ }
+
+ ieee802154_nl_scan_confirm(sw->dev, IEEE802154_SUCCESS, sw->type, sw->channels,
+ sw->edl/*, NULL */);
+
+ kfree(sw);
+
+ return;
+
+exit_error:
+ ieee802154_nl_scan_confirm(sw->dev, IEEE802154_INVALID_PARAMETER, sw->type, sw->channels,
+ NULL/*, NULL */);
+ kfree(sw);
+ return;
+}
+
+/*
+ * Alloc ed_detect list for ED scan.
+ *
+ * @param mac current mac pointer
+ * @param type type of the scan to be performed
+ * @param channels 32-bit mask of requested to scan channels
+ * @param duration scan duration, see ieee802.15.4-2003.pdf, page 145.
+ * @return 0 if request is ok, errno otherwise.
+ */
+int ieee802154_mlme_scan_req(struct net_device *dev, u8 type, u32 channels, u8 duration)
+{
+ struct ieee802154_priv *hw = ieee802154_slave_get_priv(dev);
+ struct scan_work *work;
+
+ pr_debug("%s()\n", __func__);
+
+ if (duration > 14)
+ goto inval;
+ if (channels & hw->hw.channel_mask)
+ goto inval;
+
+ work = kzalloc(sizeof(struct scan_work), GFP_KERNEL);
+ if (!work)
+ goto inval;
+
+ work->dev = dev;
+ work->channels = channels;
+ work->duration = duration;
+ work->type = type;
+
+ switch (type) {
+ case IEEE802154_MAC_SCAN_ED:
+ work->scan_ch = scan_ed;
+ break;
+ case IEEE802154_MAC_SCAN_ACTIVE:
+ work->scan_ch = scan_active;
+ break;
+ case IEEE802154_MAC_SCAN_PASSIVE:
+ work->scan_ch = scan_passive;
+ break;
+ case IEEE802154_MAC_SCAN_ORPHAN:
+ work->scan_ch = scan_orphan;
+ break;
+ default:
+ pr_debug("%s(): invalid type %d\n", __func__, type);
+ goto inval;
+ }
+
+ INIT_WORK(&work->work, scanner);
+ queue_work(hw->dev_workqueue, &work->work);
+
+ return 0;
+
+inval:
+ ieee802154_nl_scan_confirm(dev, IEEE802154_INVALID_PARAMETER, type, channels,
+ NULL/*, NULL */);
+ return -EINVAL;
+}
+
--
1.6.2.4
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