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-rw-r--r--include/linux/if_arp.h1
-rw-r--r--include/linux/nl802154.h14
-rw-r--r--include/net/wpan-phy.h8
-rw-r--r--net/mac802154/Makefile2
-rw-r--r--net/mac802154/ieee802154_dev.c5
-rw-r--r--net/mac802154/mac802154.h5
-rw-r--r--net/mac802154/monitor.c116
-rw-r--r--net/mac802154/rx.c1
8 files changed, 150 insertions, 2 deletions
diff --git a/include/linux/if_arp.h b/include/linux/if_arp.h
index 3718acf40a0..26cb3c2c5c7 100644
--- a/include/linux/if_arp.h
+++ b/include/linux/if_arp.h
@@ -87,6 +87,7 @@
#define ARPHRD_IEEE80211_PRISM 802 /* IEEE 802.11 + Prism2 header */
#define ARPHRD_IEEE80211_RADIOTAP 803 /* IEEE 802.11 + radiotap header */
#define ARPHRD_IEEE802154 804
+#define ARPHRD_IEEE802154_MONITOR 805 /* IEEE 802.15.4 network monitor */
#define ARPHRD_PHONET 820 /* PhoNet media type */
#define ARPHRD_PHONET_PIPE 821 /* PhoNet pipe header */
diff --git a/include/linux/nl802154.h b/include/linux/nl802154.h
index 2015ad24810..5a3db3aa5f1 100644
--- a/include/linux/nl802154.h
+++ b/include/linux/nl802154.h
@@ -129,6 +129,20 @@ enum {
enum {
__IEEE802154_DEV_INVALID = -1,
+
+ /* TODO:
+ * Nowadays three device types supported by this stack at linux-zigbee
+ * project: WPAN = 0, MONITOR = 1 and SMAC = 2.
+ *
+ * Since this stack implementation exists many years, it's definitely
+ * bad idea to change the assigned values due to they are already used
+ * by third-party userspace software like: iz-tools, wireshark...
+ *
+ * Currently only monitor device is added and initialized by '1' for
+ * compatibility.
+ */
+ IEEE802154_DEV_MONITOR = 1,
+
__IEEE802154_DEV_MAX,
};
diff --git a/include/net/wpan-phy.h b/include/net/wpan-phy.h
index efd6749e392..b52bda8d13b 100644
--- a/include/net/wpan-phy.h
+++ b/include/net/wpan-phy.h
@@ -25,6 +25,14 @@
#include <linux/mutex.h>
#include <linux/bug.h>
+/* According to the IEEE 802.15.4 stadard the upper most significant bits of
+ * the 32-bit channel bitmaps shall be used as an integer value to specify 32
+ * possible channel pages. The lower 27 bits of the channel bit map shall be
+ * used as a bit mask to specify channel numbers within a channel page.
+ */
+#define WPAN_NUM_CHANNELS 27
+#define WPAN_NUM_PAGES 32
+
struct wpan_phy {
struct mutex pib_lock;
diff --git a/net/mac802154/Makefile b/net/mac802154/Makefile
index 6b348b07a76..ec1bd3fc127 100644
--- a/net/mac802154/Makefile
+++ b/net/mac802154/Makefile
@@ -1,2 +1,2 @@
obj-$(CONFIG_MAC802154) += mac802154.o
-mac802154-objs := ieee802154_dev.o rx.o tx.o mac_cmd.o mib.o
+mac802154-objs := ieee802154_dev.o rx.o tx.o mac_cmd.o mib.o monitor.o
diff --git a/net/mac802154/ieee802154_dev.c b/net/mac802154/ieee802154_dev.c
index 9f36760b6c3..e3edfb0661b 100644
--- a/net/mac802154/ieee802154_dev.c
+++ b/net/mac802154/ieee802154_dev.c
@@ -135,8 +135,11 @@ mac802154_add_iface(struct wpan_phy *phy, const char *name, int type)
struct net_device *dev;
int err = -ENOMEM;
- /* No devices is currently added */
switch (type) {
+ case IEEE802154_DEV_MONITOR:
+ dev = alloc_netdev(sizeof(struct mac802154_sub_if_data),
+ name, mac802154_monitor_setup);
+ break;
default:
dev = NULL;
err = -EINVAL;
diff --git a/net/mac802154/mac802154.h b/net/mac802154/mac802154.h
index 622752622c8..789d9c948ae 100644
--- a/net/mac802154/mac802154.h
+++ b/net/mac802154/mac802154.h
@@ -90,11 +90,16 @@ struct mac802154_sub_if_data {
#define MAC802154_MAX_XMIT_ATTEMPTS 3
+#define MAC802154_CHAN_NONE (~(u8)0) /* No channel is assigned */
+
extern struct ieee802154_reduced_mlme_ops mac802154_mlme_reduced;
int mac802154_slave_open(struct net_device *dev);
int mac802154_slave_close(struct net_device *dev);
+void mac802154_monitors_rx(struct mac802154_priv *priv, struct sk_buff *skb);
+void mac802154_monitor_setup(struct net_device *dev);
+
netdev_tx_t mac802154_tx(struct mac802154_priv *priv, struct sk_buff *skb,
u8 page, u8 chan);
diff --git a/net/mac802154/monitor.c b/net/mac802154/monitor.c
new file mode 100644
index 00000000000..434a26f76a8
--- /dev/null
+++ b/net/mac802154/monitor.c
@@ -0,0 +1,116 @@
+/*
+ * 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:
+ * Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
+ * Sergey Lapin <slapin@ossfans.org>
+ * Maxim Gorbachyov <maxim.gorbachev@siemens.com>
+ * Alexander Smirnov <alex.bluesman.smirnov@gmail.com>
+ */
+
+#include <linux/netdevice.h>
+#include <linux/skbuff.h>
+#include <linux/if_arp.h>
+#include <linux/crc-ccitt.h>
+
+#include <net/ieee802154.h>
+#include <net/mac802154.h>
+#include <net/netlink.h>
+#include <net/wpan-phy.h>
+#include <linux/nl802154.h>
+
+#include "mac802154.h"
+
+static netdev_tx_t mac802154_monitor_xmit(struct sk_buff *skb,
+ struct net_device *dev)
+{
+ struct mac802154_sub_if_data *priv;
+ u8 chan, page;
+
+ priv = netdev_priv(dev);
+
+ /* FIXME: locking */
+ chan = priv->hw->phy->current_channel;
+ page = priv->hw->phy->current_page;
+
+ if (chan == MAC802154_CHAN_NONE) /* not initialized */
+ return NETDEV_TX_OK;
+
+ if (WARN_ON(page >= WPAN_NUM_PAGES) ||
+ WARN_ON(chan >= WPAN_NUM_CHANNELS))
+ return NETDEV_TX_OK;
+
+ skb->skb_iif = dev->ifindex;
+ dev->stats.tx_packets++;
+ dev->stats.tx_bytes += skb->len;
+
+ return mac802154_tx(priv->hw, skb, page, chan);
+}
+
+
+void mac802154_monitors_rx(struct mac802154_priv *priv, struct sk_buff *skb)
+{
+ struct sk_buff *skb2;
+ struct mac802154_sub_if_data *sdata;
+ u16 crc = crc_ccitt(0, skb->data, skb->len);
+ u8 *data;
+
+ rcu_read_lock();
+ list_for_each_entry_rcu(sdata, &priv->slaves, list) {
+ if (sdata->type != IEEE802154_DEV_MONITOR)
+ continue;
+
+ skb2 = skb_clone(skb, GFP_ATOMIC);
+ skb2->dev = sdata->dev;
+ skb2->pkt_type = PACKET_HOST;
+ data = skb_put(skb2, 2);
+ data[0] = crc & 0xff;
+ data[1] = crc >> 8;
+
+ netif_rx_ni(skb2);
+ }
+ rcu_read_unlock();
+}
+
+static const struct net_device_ops mac802154_monitor_ops = {
+ .ndo_open = mac802154_slave_open,
+ .ndo_stop = mac802154_slave_close,
+ .ndo_start_xmit = mac802154_monitor_xmit,
+};
+
+void mac802154_monitor_setup(struct net_device *dev)
+{
+ struct mac802154_sub_if_data *priv;
+
+ dev->addr_len = 0;
+ dev->hard_header_len = 0;
+ dev->needed_tailroom = 2; /* room for FCS */
+ dev->mtu = IEEE802154_MTU;
+ dev->tx_queue_len = 10;
+ dev->type = ARPHRD_IEEE802154_MONITOR;
+ dev->flags = IFF_NOARP | IFF_BROADCAST;
+ dev->watchdog_timeo = 0;
+
+ dev->destructor = free_netdev;
+ dev->netdev_ops = &mac802154_monitor_ops;
+ dev->ml_priv = &mac802154_mlme_reduced;
+
+ priv = netdev_priv(dev);
+ priv->type = IEEE802154_DEV_MONITOR;
+
+ priv->chan = MAC802154_CHAN_NONE; /* not initialized */
+ priv->page = 0;
+}
diff --git a/net/mac802154/rx.c b/net/mac802154/rx.c
index d15738fae55..4a7d76d4f8b 100644
--- a/net/mac802154/rx.c
+++ b/net/mac802154/rx.c
@@ -76,6 +76,7 @@ mac802154_subif_rx(struct ieee802154_dev *hw, struct sk_buff *skb, u8 lqi)
skb_trim(skb, skb->len - 2); /* CRC */
}
+ mac802154_monitors_rx(priv, skb);
out:
dev_kfree_skb(skb);
return;
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-29 22:05:36 +0000