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-rw-r--r--net/mac802154/Kconfig22
-rw-r--r--net/mac802154/Makefile6
-rw-r--r--net/mac802154/cfg.c545
-rw-r--r--net/mac802154/cfg.h10
-rw-r--r--net/mac802154/driver-ops.h354
-rw-r--r--net/mac802154/ieee802154_i.h310
-rw-r--r--net/mac802154/iface.c740
-rw-r--r--net/mac802154/llsec.c1053
-rw-r--r--net/mac802154/llsec.h99
-rw-r--r--net/mac802154/mac_cmd.c144
-rw-r--r--net/mac802154/main.c304
-rw-r--r--net/mac802154/mib.c219
-rw-r--r--net/mac802154/rx.c422
-rw-r--r--net/mac802154/scan.c512
-rw-r--r--net/mac802154/trace.c10
-rw-r--r--net/mac802154/trace.h298
-rw-r--r--net/mac802154/tx.c253
-rw-r--r--net/mac802154/util.c173
18 files changed, 5474 insertions, 0 deletions
diff --git a/net/mac802154/Kconfig b/net/mac802154/Kconfig
new file mode 100644
index 0000000000..901167b1e6
--- /dev/null
+++ b/net/mac802154/Kconfig
@@ -0,0 +1,22 @@
+# SPDX-License-Identifier: GPL-2.0-only
+config MAC802154
+ tristate "Generic IEEE 802.15.4 Soft Networking Stack (mac802154)"
+ depends on IEEE802154
+ select CRC_CCITT
+ select CRYPTO
+ select CRYPTO_AUTHENC
+ select CRYPTO_CCM
+ select CRYPTO_CTR
+ select CRYPTO_AES
+ 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).
+
+ Note: this implementation is neither certified, nor feature
+ complete! Compatibility with other implementations hasn't
+ been tested yet!
+
+ If you plan to use HardMAC IEEE 802.15.4 devices, you can
+ say N here. Alternatively you can say M to compile it as
+ module.
diff --git a/net/mac802154/Makefile b/net/mac802154/Makefile
new file mode 100644
index 0000000000..43d1347b37
--- /dev/null
+++ b/net/mac802154/Makefile
@@ -0,0 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0-only
+obj-$(CONFIG_MAC802154) += mac802154.o
+mac802154-objs := main.o rx.o tx.o mac_cmd.o mib.o \
+ iface.o llsec.o util.o cfg.o scan.o trace.o
+
+CFLAGS_trace.o := -I$(src)
diff --git a/net/mac802154/cfg.c b/net/mac802154/cfg.c
new file mode 100644
index 0000000000..5c3cb019f7
--- /dev/null
+++ b/net/mac802154/cfg.c
@@ -0,0 +1,545 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ *
+ * Authors:
+ * Alexander Aring <aar@pengutronix.de>
+ *
+ * Based on: net/mac80211/cfg.c
+ */
+
+#include <net/rtnetlink.h>
+#include <net/cfg802154.h>
+
+#include "ieee802154_i.h"
+#include "driver-ops.h"
+#include "cfg.h"
+
+static struct net_device *
+ieee802154_add_iface_deprecated(struct wpan_phy *wpan_phy,
+ const char *name,
+ unsigned char name_assign_type, int type)
+{
+ struct ieee802154_local *local = wpan_phy_priv(wpan_phy);
+ struct net_device *dev;
+
+ rtnl_lock();
+ dev = ieee802154_if_add(local, name, name_assign_type, type,
+ cpu_to_le64(0x0000000000000000ULL));
+ rtnl_unlock();
+
+ return dev;
+}
+
+static void ieee802154_del_iface_deprecated(struct wpan_phy *wpan_phy,
+ struct net_device *dev)
+{
+ struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
+
+ ieee802154_if_remove(sdata);
+}
+
+#ifdef CONFIG_PM
+static int ieee802154_suspend(struct wpan_phy *wpan_phy)
+{
+ struct ieee802154_local *local = wpan_phy_priv(wpan_phy);
+
+ if (!local->open_count)
+ goto suspend;
+
+ ieee802154_sync_and_hold_queue(local);
+ synchronize_net();
+
+ /* stop hardware - this must stop RX */
+ ieee802154_stop_device(local);
+
+suspend:
+ local->suspended = true;
+ return 0;
+}
+
+static int ieee802154_resume(struct wpan_phy *wpan_phy)
+{
+ struct ieee802154_local *local = wpan_phy_priv(wpan_phy);
+ int ret;
+
+ /* nothing to do if HW shouldn't run */
+ if (!local->open_count)
+ goto wake_up;
+
+ /* restart hardware */
+ ret = drv_start(local, local->phy->filtering, &local->addr_filt);
+ if (ret)
+ return ret;
+
+wake_up:
+ ieee802154_release_queue(local);
+ local->suspended = false;
+ return 0;
+}
+#else
+#define ieee802154_suspend NULL
+#define ieee802154_resume NULL
+#endif
+
+static int
+ieee802154_add_iface(struct wpan_phy *phy, const char *name,
+ unsigned char name_assign_type,
+ enum nl802154_iftype type, __le64 extended_addr)
+{
+ struct ieee802154_local *local = wpan_phy_priv(phy);
+ struct net_device *err;
+
+ err = ieee802154_if_add(local, name, name_assign_type, type,
+ extended_addr);
+ return PTR_ERR_OR_ZERO(err);
+}
+
+static int
+ieee802154_del_iface(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev)
+{
+ ieee802154_if_remove(IEEE802154_WPAN_DEV_TO_SUB_IF(wpan_dev));
+
+ return 0;
+}
+
+static int
+ieee802154_set_channel(struct wpan_phy *wpan_phy, u8 page, u8 channel)
+{
+ struct ieee802154_local *local = wpan_phy_priv(wpan_phy);
+ int ret;
+
+ ASSERT_RTNL();
+
+ if (wpan_phy->current_page == page &&
+ wpan_phy->current_channel == channel)
+ return 0;
+
+ /* Refuse to change channels during scanning or beaconing */
+ if (mac802154_is_scanning(local) || mac802154_is_beaconing(local))
+ return -EBUSY;
+
+ ret = drv_set_channel(local, page, channel);
+ if (!ret) {
+ wpan_phy->current_page = page;
+ wpan_phy->current_channel = channel;
+ ieee802154_configure_durations(wpan_phy, page, channel);
+ }
+
+ return ret;
+}
+
+static int
+ieee802154_set_cca_mode(struct wpan_phy *wpan_phy,
+ const struct wpan_phy_cca *cca)
+{
+ struct ieee802154_local *local = wpan_phy_priv(wpan_phy);
+ int ret;
+
+ ASSERT_RTNL();
+
+ if (wpan_phy_cca_cmp(&wpan_phy->cca, cca))
+ return 0;
+
+ ret = drv_set_cca_mode(local, cca);
+ if (!ret)
+ wpan_phy->cca = *cca;
+
+ return ret;
+}
+
+static int
+ieee802154_set_cca_ed_level(struct wpan_phy *wpan_phy, s32 ed_level)
+{
+ struct ieee802154_local *local = wpan_phy_priv(wpan_phy);
+ int ret;
+
+ ASSERT_RTNL();
+
+ if (wpan_phy->cca_ed_level == ed_level)
+ return 0;
+
+ ret = drv_set_cca_ed_level(local, ed_level);
+ if (!ret)
+ wpan_phy->cca_ed_level = ed_level;
+
+ return ret;
+}
+
+static int
+ieee802154_set_tx_power(struct wpan_phy *wpan_phy, s32 power)
+{
+ struct ieee802154_local *local = wpan_phy_priv(wpan_phy);
+ int ret;
+
+ ASSERT_RTNL();
+
+ if (wpan_phy->transmit_power == power)
+ return 0;
+
+ ret = drv_set_tx_power(local, power);
+ if (!ret)
+ wpan_phy->transmit_power = power;
+
+ return ret;
+}
+
+static int
+ieee802154_set_pan_id(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
+ __le16 pan_id)
+{
+ int ret;
+
+ ASSERT_RTNL();
+
+ if (wpan_dev->pan_id == pan_id)
+ return 0;
+
+ ret = mac802154_wpan_update_llsec(wpan_dev->netdev);
+ if (!ret)
+ wpan_dev->pan_id = pan_id;
+
+ return ret;
+}
+
+static int
+ieee802154_set_backoff_exponent(struct wpan_phy *wpan_phy,
+ struct wpan_dev *wpan_dev,
+ u8 min_be, u8 max_be)
+{
+ ASSERT_RTNL();
+
+ wpan_dev->min_be = min_be;
+ wpan_dev->max_be = max_be;
+ return 0;
+}
+
+static int
+ieee802154_set_short_addr(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
+ __le16 short_addr)
+{
+ ASSERT_RTNL();
+
+ wpan_dev->short_addr = short_addr;
+ return 0;
+}
+
+static int
+ieee802154_set_max_csma_backoffs(struct wpan_phy *wpan_phy,
+ struct wpan_dev *wpan_dev,
+ u8 max_csma_backoffs)
+{
+ ASSERT_RTNL();
+
+ wpan_dev->csma_retries = max_csma_backoffs;
+ return 0;
+}
+
+static int
+ieee802154_set_max_frame_retries(struct wpan_phy *wpan_phy,
+ struct wpan_dev *wpan_dev,
+ s8 max_frame_retries)
+{
+ ASSERT_RTNL();
+
+ wpan_dev->frame_retries = max_frame_retries;
+ return 0;
+}
+
+static int
+ieee802154_set_lbt_mode(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
+ bool mode)
+{
+ ASSERT_RTNL();
+
+ wpan_dev->lbt = mode;
+ return 0;
+}
+
+static int
+ieee802154_set_ackreq_default(struct wpan_phy *wpan_phy,
+ struct wpan_dev *wpan_dev, bool ackreq)
+{
+ ASSERT_RTNL();
+
+ wpan_dev->ackreq = ackreq;
+ return 0;
+}
+
+static int mac802154_trigger_scan(struct wpan_phy *wpan_phy,
+ struct cfg802154_scan_request *request)
+{
+ struct ieee802154_sub_if_data *sdata;
+
+ sdata = IEEE802154_WPAN_DEV_TO_SUB_IF(request->wpan_dev);
+
+ ASSERT_RTNL();
+
+ return mac802154_trigger_scan_locked(sdata, request);
+}
+
+static int mac802154_abort_scan(struct wpan_phy *wpan_phy,
+ struct wpan_dev *wpan_dev)
+{
+ struct ieee802154_local *local = wpan_phy_priv(wpan_phy);
+ struct ieee802154_sub_if_data *sdata;
+
+ sdata = IEEE802154_WPAN_DEV_TO_SUB_IF(wpan_dev);
+
+ ASSERT_RTNL();
+
+ return mac802154_abort_scan_locked(local, sdata);
+}
+
+static int mac802154_send_beacons(struct wpan_phy *wpan_phy,
+ struct cfg802154_beacon_request *request)
+{
+ struct ieee802154_sub_if_data *sdata;
+
+ sdata = IEEE802154_WPAN_DEV_TO_SUB_IF(request->wpan_dev);
+
+ ASSERT_RTNL();
+
+ return mac802154_send_beacons_locked(sdata, request);
+}
+
+static int mac802154_stop_beacons(struct wpan_phy *wpan_phy,
+ struct wpan_dev *wpan_dev)
+{
+ struct ieee802154_local *local = wpan_phy_priv(wpan_phy);
+ struct ieee802154_sub_if_data *sdata;
+
+ sdata = IEEE802154_WPAN_DEV_TO_SUB_IF(wpan_dev);
+
+ ASSERT_RTNL();
+
+ return mac802154_stop_beacons_locked(local, sdata);
+}
+
+#ifdef CONFIG_IEEE802154_NL802154_EXPERIMENTAL
+static void
+ieee802154_get_llsec_table(struct wpan_phy *wpan_phy,
+ struct wpan_dev *wpan_dev,
+ struct ieee802154_llsec_table **table)
+{
+ struct net_device *dev = wpan_dev->netdev;
+ struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
+
+ *table = &sdata->sec.table;
+}
+
+static void
+ieee802154_lock_llsec_table(struct wpan_phy *wpan_phy,
+ struct wpan_dev *wpan_dev)
+{
+ struct net_device *dev = wpan_dev->netdev;
+ struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
+
+ mutex_lock(&sdata->sec_mtx);
+}
+
+static void
+ieee802154_unlock_llsec_table(struct wpan_phy *wpan_phy,
+ struct wpan_dev *wpan_dev)
+{
+ struct net_device *dev = wpan_dev->netdev;
+ struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
+
+ mutex_unlock(&sdata->sec_mtx);
+}
+
+static int
+ieee802154_set_llsec_params(struct wpan_phy *wpan_phy,
+ struct wpan_dev *wpan_dev,
+ const struct ieee802154_llsec_params *params,
+ int changed)
+{
+ struct net_device *dev = wpan_dev->netdev;
+ struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
+ int res;
+
+ mutex_lock(&sdata->sec_mtx);
+ res = mac802154_llsec_set_params(&sdata->sec, params, changed);
+ mutex_unlock(&sdata->sec_mtx);
+
+ return res;
+}
+
+static int
+ieee802154_get_llsec_params(struct wpan_phy *wpan_phy,
+ struct wpan_dev *wpan_dev,
+ struct ieee802154_llsec_params *params)
+{
+ struct net_device *dev = wpan_dev->netdev;
+ struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
+ int res;
+
+ mutex_lock(&sdata->sec_mtx);
+ res = mac802154_llsec_get_params(&sdata->sec, params);
+ mutex_unlock(&sdata->sec_mtx);
+
+ return res;
+}
+
+static int
+ieee802154_add_llsec_key(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
+ const struct ieee802154_llsec_key_id *id,
+ const struct ieee802154_llsec_key *key)
+{
+ struct net_device *dev = wpan_dev->netdev;
+ struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
+ int res;
+
+ mutex_lock(&sdata->sec_mtx);
+ res = mac802154_llsec_key_add(&sdata->sec, id, key);
+ mutex_unlock(&sdata->sec_mtx);
+
+ return res;
+}
+
+static int
+ieee802154_del_llsec_key(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
+ const struct ieee802154_llsec_key_id *id)
+{
+ struct net_device *dev = wpan_dev->netdev;
+ struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
+ int res;
+
+ mutex_lock(&sdata->sec_mtx);
+ res = mac802154_llsec_key_del(&sdata->sec, id);
+ mutex_unlock(&sdata->sec_mtx);
+
+ return res;
+}
+
+static int
+ieee802154_add_seclevel(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
+ const struct ieee802154_llsec_seclevel *sl)
+{
+ struct net_device *dev = wpan_dev->netdev;
+ struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
+ int res;
+
+ mutex_lock(&sdata->sec_mtx);
+ res = mac802154_llsec_seclevel_add(&sdata->sec, sl);
+ mutex_unlock(&sdata->sec_mtx);
+
+ return res;
+}
+
+static int
+ieee802154_del_seclevel(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
+ const struct ieee802154_llsec_seclevel *sl)
+{
+ struct net_device *dev = wpan_dev->netdev;
+ struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
+ int res;
+
+ mutex_lock(&sdata->sec_mtx);
+ res = mac802154_llsec_seclevel_del(&sdata->sec, sl);
+ mutex_unlock(&sdata->sec_mtx);
+
+ return res;
+}
+
+static int
+ieee802154_add_device(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
+ const struct ieee802154_llsec_device *dev_desc)
+{
+ struct net_device *dev = wpan_dev->netdev;
+ struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
+ int res;
+
+ mutex_lock(&sdata->sec_mtx);
+ res = mac802154_llsec_dev_add(&sdata->sec, dev_desc);
+ mutex_unlock(&sdata->sec_mtx);
+
+ return res;
+}
+
+static int
+ieee802154_del_device(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
+ __le64 extended_addr)
+{
+ struct net_device *dev = wpan_dev->netdev;
+ struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
+ int res;
+
+ mutex_lock(&sdata->sec_mtx);
+ res = mac802154_llsec_dev_del(&sdata->sec, extended_addr);
+ mutex_unlock(&sdata->sec_mtx);
+
+ return res;
+}
+
+static int
+ieee802154_add_devkey(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
+ __le64 extended_addr,
+ const struct ieee802154_llsec_device_key *key)
+{
+ struct net_device *dev = wpan_dev->netdev;
+ struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
+ int res;
+
+ mutex_lock(&sdata->sec_mtx);
+ res = mac802154_llsec_devkey_add(&sdata->sec, extended_addr, key);
+ mutex_unlock(&sdata->sec_mtx);
+
+ return res;
+}
+
+static int
+ieee802154_del_devkey(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
+ __le64 extended_addr,
+ const struct ieee802154_llsec_device_key *key)
+{
+ struct net_device *dev = wpan_dev->netdev;
+ struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
+ int res;
+
+ mutex_lock(&sdata->sec_mtx);
+ res = mac802154_llsec_devkey_del(&sdata->sec, extended_addr, key);
+ mutex_unlock(&sdata->sec_mtx);
+
+ return res;
+}
+#endif /* CONFIG_IEEE802154_NL802154_EXPERIMENTAL */
+
+const struct cfg802154_ops mac802154_config_ops = {
+ .add_virtual_intf_deprecated = ieee802154_add_iface_deprecated,
+ .del_virtual_intf_deprecated = ieee802154_del_iface_deprecated,
+ .suspend = ieee802154_suspend,
+ .resume = ieee802154_resume,
+ .add_virtual_intf = ieee802154_add_iface,
+ .del_virtual_intf = ieee802154_del_iface,
+ .set_channel = ieee802154_set_channel,
+ .set_cca_mode = ieee802154_set_cca_mode,
+ .set_cca_ed_level = ieee802154_set_cca_ed_level,
+ .set_tx_power = ieee802154_set_tx_power,
+ .set_pan_id = ieee802154_set_pan_id,
+ .set_short_addr = ieee802154_set_short_addr,
+ .set_backoff_exponent = ieee802154_set_backoff_exponent,
+ .set_max_csma_backoffs = ieee802154_set_max_csma_backoffs,
+ .set_max_frame_retries = ieee802154_set_max_frame_retries,
+ .set_lbt_mode = ieee802154_set_lbt_mode,
+ .set_ackreq_default = ieee802154_set_ackreq_default,
+ .trigger_scan = mac802154_trigger_scan,
+ .abort_scan = mac802154_abort_scan,
+ .send_beacons = mac802154_send_beacons,
+ .stop_beacons = mac802154_stop_beacons,
+#ifdef CONFIG_IEEE802154_NL802154_EXPERIMENTAL
+ .get_llsec_table = ieee802154_get_llsec_table,
+ .lock_llsec_table = ieee802154_lock_llsec_table,
+ .unlock_llsec_table = ieee802154_unlock_llsec_table,
+ /* TODO above */
+ .set_llsec_params = ieee802154_set_llsec_params,
+ .get_llsec_params = ieee802154_get_llsec_params,
+ .add_llsec_key = ieee802154_add_llsec_key,
+ .del_llsec_key = ieee802154_del_llsec_key,
+ .add_seclevel = ieee802154_add_seclevel,
+ .del_seclevel = ieee802154_del_seclevel,
+ .add_device = ieee802154_add_device,
+ .del_device = ieee802154_del_device,
+ .add_devkey = ieee802154_add_devkey,
+ .del_devkey = ieee802154_del_devkey,
+#endif /* CONFIG_IEEE802154_NL802154_EXPERIMENTAL */
+};
diff --git a/net/mac802154/cfg.h b/net/mac802154/cfg.h
new file mode 100644
index 0000000000..3bb0896855
--- /dev/null
+++ b/net/mac802154/cfg.h
@@ -0,0 +1,10 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* mac802154 configuration hooks for cfg802154
+ */
+
+#ifndef __CFG_H
+#define __CFG_H
+
+extern const struct cfg802154_ops mac802154_config_ops;
+
+#endif /* __CFG_H */
diff --git a/net/mac802154/driver-ops.h b/net/mac802154/driver-ops.h
new file mode 100644
index 0000000000..a7af3f0ddb
--- /dev/null
+++ b/net/mac802154/driver-ops.h
@@ -0,0 +1,354 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __MAC802154_DRIVER_OPS
+#define __MAC802154_DRIVER_OPS
+
+#include <linux/types.h>
+#include <linux/rtnetlink.h>
+
+#include <net/mac802154.h>
+
+#include "ieee802154_i.h"
+#include "trace.h"
+
+static inline int
+drv_xmit_async(struct ieee802154_local *local, struct sk_buff *skb)
+{
+ return local->ops->xmit_async(&local->hw, skb);
+}
+
+static inline int
+drv_xmit_sync(struct ieee802154_local *local, struct sk_buff *skb)
+{
+ might_sleep();
+
+ return local->ops->xmit_sync(&local->hw, skb);
+}
+
+static inline int drv_set_pan_id(struct ieee802154_local *local, __le16 pan_id)
+{
+ struct ieee802154_hw_addr_filt filt;
+ int ret;
+
+ might_sleep();
+
+ if (!local->ops->set_hw_addr_filt) {
+ WARN_ON(1);
+ return -EOPNOTSUPP;
+ }
+
+ filt.pan_id = pan_id;
+
+ trace_802154_drv_set_pan_id(local, pan_id);
+ ret = local->ops->set_hw_addr_filt(&local->hw, &filt,
+ IEEE802154_AFILT_PANID_CHANGED);
+ trace_802154_drv_return_int(local, ret);
+ return ret;
+}
+
+static inline int
+drv_set_extended_addr(struct ieee802154_local *local, __le64 extended_addr)
+{
+ struct ieee802154_hw_addr_filt filt;
+ int ret;
+
+ might_sleep();
+
+ if (!local->ops->set_hw_addr_filt) {
+ WARN_ON(1);
+ return -EOPNOTSUPP;
+ }
+
+ filt.ieee_addr = extended_addr;
+
+ trace_802154_drv_set_extended_addr(local, extended_addr);
+ ret = local->ops->set_hw_addr_filt(&local->hw, &filt,
+ IEEE802154_AFILT_IEEEADDR_CHANGED);
+ trace_802154_drv_return_int(local, ret);
+ return ret;
+}
+
+static inline int
+drv_set_short_addr(struct ieee802154_local *local, __le16 short_addr)
+{
+ struct ieee802154_hw_addr_filt filt;
+ int ret;
+
+ might_sleep();
+
+ if (!local->ops->set_hw_addr_filt) {
+ WARN_ON(1);
+ return -EOPNOTSUPP;
+ }
+
+ filt.short_addr = short_addr;
+
+ trace_802154_drv_set_short_addr(local, short_addr);
+ ret = local->ops->set_hw_addr_filt(&local->hw, &filt,
+ IEEE802154_AFILT_SADDR_CHANGED);
+ trace_802154_drv_return_int(local, ret);
+ return ret;
+}
+
+static inline int
+drv_set_pan_coord(struct ieee802154_local *local, bool is_coord)
+{
+ struct ieee802154_hw_addr_filt filt;
+ int ret;
+
+ might_sleep();
+
+ if (!local->ops->set_hw_addr_filt) {
+ WARN_ON(1);
+ return -EOPNOTSUPP;
+ }
+
+ filt.pan_coord = is_coord;
+
+ trace_802154_drv_set_pan_coord(local, is_coord);
+ ret = local->ops->set_hw_addr_filt(&local->hw, &filt,
+ IEEE802154_AFILT_PANC_CHANGED);
+ trace_802154_drv_return_int(local, ret);
+ return ret;
+}
+
+static inline int
+drv_set_promiscuous_mode(struct ieee802154_local *local, bool on)
+{
+ int ret;
+
+ might_sleep();
+
+ if (!local->ops->set_promiscuous_mode) {
+ WARN_ON(1);
+ return -EOPNOTSUPP;
+ }
+
+ trace_802154_drv_set_promiscuous_mode(local, on);
+ ret = local->ops->set_promiscuous_mode(&local->hw, on);
+ trace_802154_drv_return_int(local, ret);
+ return ret;
+}
+
+static inline int drv_start(struct ieee802154_local *local,
+ enum ieee802154_filtering_level level,
+ const struct ieee802154_hw_addr_filt *addr_filt)
+{
+ int ret;
+
+ might_sleep();
+
+ /* setup receive mode parameters e.g. address mode */
+ if (local->hw.flags & IEEE802154_HW_AFILT) {
+ ret = drv_set_pan_id(local, addr_filt->pan_id);
+ if (ret < 0)
+ return ret;
+
+ ret = drv_set_short_addr(local, addr_filt->short_addr);
+ if (ret < 0)
+ return ret;
+
+ ret = drv_set_extended_addr(local, addr_filt->ieee_addr);
+ if (ret < 0)
+ return ret;
+ }
+
+ switch (level) {
+ case IEEE802154_FILTERING_NONE:
+ fallthrough;
+ case IEEE802154_FILTERING_1_FCS:
+ fallthrough;
+ case IEEE802154_FILTERING_2_PROMISCUOUS:
+ /* TODO: Requires a different receive mode setup e.g.
+ * at86rf233 hardware.
+ */
+ fallthrough;
+ case IEEE802154_FILTERING_3_SCAN:
+ if (local->hw.flags & IEEE802154_HW_PROMISCUOUS) {
+ ret = drv_set_promiscuous_mode(local, true);
+ if (ret < 0)
+ return ret;
+ } else {
+ return -EOPNOTSUPP;
+ }
+
+ /* In practice other filtering levels can be requested, but as
+ * for now most hardware/drivers only support
+ * IEEE802154_FILTERING_NONE, we fallback to this actual
+ * filtering level in hardware and make our own additional
+ * filtering in mac802154 receive path.
+ *
+ * TODO: Move this logic to the device drivers as hardware may
+ * support more higher level filters. Hardware may also require
+ * a different order how register are set, which could currently
+ * be buggy, so all received parameters need to be moved to the
+ * start() callback and let the driver go into the mode before
+ * it will turn on receive handling.
+ */
+ local->phy->filtering = IEEE802154_FILTERING_NONE;
+ break;
+ case IEEE802154_FILTERING_4_FRAME_FIELDS:
+ /* Do not error out if IEEE802154_HW_PROMISCUOUS because we
+ * expect the hardware to operate at the level
+ * IEEE802154_FILTERING_4_FRAME_FIELDS anyway.
+ */
+ if (local->hw.flags & IEEE802154_HW_PROMISCUOUS) {
+ ret = drv_set_promiscuous_mode(local, false);
+ if (ret < 0)
+ return ret;
+ }
+
+ local->phy->filtering = IEEE802154_FILTERING_4_FRAME_FIELDS;
+ break;
+ default:
+ WARN_ON(1);
+ return -EINVAL;
+ }
+
+ trace_802154_drv_start(local);
+ local->started = true;
+ smp_mb();
+ ret = local->ops->start(&local->hw);
+ trace_802154_drv_return_int(local, ret);
+ return ret;
+}
+
+static inline void drv_stop(struct ieee802154_local *local)
+{
+ might_sleep();
+
+ trace_802154_drv_stop(local);
+ local->ops->stop(&local->hw);
+ trace_802154_drv_return_void(local);
+
+ /* sync away all work on the tasklet before clearing started */
+ tasklet_disable(&local->tasklet);
+ tasklet_enable(&local->tasklet);
+
+ barrier();
+
+ local->started = false;
+}
+
+static inline int
+drv_set_channel(struct ieee802154_local *local, u8 page, u8 channel)
+{
+ int ret;
+
+ might_sleep();
+
+ trace_802154_drv_set_channel(local, page, channel);
+ ret = local->ops->set_channel(&local->hw, page, channel);
+ trace_802154_drv_return_int(local, ret);
+ return ret;
+}
+
+static inline int drv_set_tx_power(struct ieee802154_local *local, s32 mbm)
+{
+ int ret;
+
+ might_sleep();
+
+ if (!local->ops->set_txpower) {
+ WARN_ON(1);
+ return -EOPNOTSUPP;
+ }
+
+ trace_802154_drv_set_tx_power(local, mbm);
+ ret = local->ops->set_txpower(&local->hw, mbm);
+ trace_802154_drv_return_int(local, ret);
+ return ret;
+}
+
+static inline int drv_set_cca_mode(struct ieee802154_local *local,
+ const struct wpan_phy_cca *cca)
+{
+ int ret;
+
+ might_sleep();
+
+ if (!local->ops->set_cca_mode) {
+ WARN_ON(1);
+ return -EOPNOTSUPP;
+ }
+
+ trace_802154_drv_set_cca_mode(local, cca);
+ ret = local->ops->set_cca_mode(&local->hw, cca);
+ trace_802154_drv_return_int(local, ret);
+ return ret;
+}
+
+static inline int drv_set_lbt_mode(struct ieee802154_local *local, bool mode)
+{
+ int ret;
+
+ might_sleep();
+
+ if (!local->ops->set_lbt) {
+ WARN_ON(1);
+ return -EOPNOTSUPP;
+ }
+
+ trace_802154_drv_set_lbt_mode(local, mode);
+ ret = local->ops->set_lbt(&local->hw, mode);
+ trace_802154_drv_return_int(local, ret);
+ return ret;
+}
+
+static inline int
+drv_set_cca_ed_level(struct ieee802154_local *local, s32 mbm)
+{
+ int ret;
+
+ might_sleep();
+
+ if (!local->ops->set_cca_ed_level) {
+ WARN_ON(1);
+ return -EOPNOTSUPP;
+ }
+
+ trace_802154_drv_set_cca_ed_level(local, mbm);
+ ret = local->ops->set_cca_ed_level(&local->hw, mbm);
+ trace_802154_drv_return_int(local, ret);
+ return ret;
+}
+
+static inline int
+drv_set_csma_params(struct ieee802154_local *local, u8 min_be, u8 max_be,
+ u8 max_csma_backoffs)
+{
+ int ret;
+
+ might_sleep();
+
+ if (!local->ops->set_csma_params) {
+ WARN_ON(1);
+ return -EOPNOTSUPP;
+ }
+
+ trace_802154_drv_set_csma_params(local, min_be, max_be,
+ max_csma_backoffs);
+ ret = local->ops->set_csma_params(&local->hw, min_be, max_be,
+ max_csma_backoffs);
+ trace_802154_drv_return_int(local, ret);
+ return ret;
+}
+
+static inline int
+drv_set_max_frame_retries(struct ieee802154_local *local, s8 max_frame_retries)
+{
+ int ret;
+
+ might_sleep();
+
+ if (!local->ops->set_frame_retries) {
+ WARN_ON(1);
+ return -EOPNOTSUPP;
+ }
+
+ trace_802154_drv_set_max_frame_retries(local, max_frame_retries);
+ ret = local->ops->set_frame_retries(&local->hw, max_frame_retries);
+ trace_802154_drv_return_int(local, ret);
+ return ret;
+}
+
+#endif /* __MAC802154_DRIVER_OPS */
diff --git a/net/mac802154/ieee802154_i.h b/net/mac802154/ieee802154_i.h
new file mode 100644
index 0000000000..c347ec9ff8
--- /dev/null
+++ b/net/mac802154/ieee802154_i.h
@@ -0,0 +1,310 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (C) 2007-2012 Siemens AG
+ *
+ * Written by:
+ * Pavel Smolenskiy <pavel.smolenskiy@gmail.com>
+ * Maxim Gorbachyov <maxim.gorbachev@siemens.com>
+ * Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
+ * Alexander Smirnov <alex.bluesman.smirnov@gmail.com>
+ */
+#ifndef __IEEE802154_I_H
+#define __IEEE802154_I_H
+
+#include <linux/interrupt.h>
+#include <linux/mutex.h>
+#include <linux/hrtimer.h>
+#include <net/cfg802154.h>
+#include <net/mac802154.h>
+#include <net/nl802154.h>
+#include <net/ieee802154_netdev.h>
+
+#include "llsec.h"
+
+enum ieee802154_ongoing {
+ IEEE802154_IS_SCANNING = BIT(0),
+ IEEE802154_IS_BEACONING = BIT(1),
+};
+
+/* mac802154 device private data */
+struct ieee802154_local {
+ struct ieee802154_hw hw;
+ const struct ieee802154_ops *ops;
+
+ /* hardware address filter */
+ struct ieee802154_hw_addr_filt addr_filt;
+ /* ieee802154 phy */
+ struct wpan_phy *phy;
+
+ int open_count;
+
+ /* As in mac80211 slaves list is modified:
+ * 1) under the RTNL
+ * 2) protected by slaves_mtx;
+ * 3) in an RCU manner
+ *
+ * So atomic readers can use any of this protection methods.
+ */
+ struct list_head interfaces;
+ struct mutex iflist_mtx;
+
+ /* Data related workqueue */
+ struct workqueue_struct *workqueue;
+ /* MAC commands related workqueue */
+ struct workqueue_struct *mac_wq;
+
+ struct hrtimer ifs_timer;
+
+ /* Scanning */
+ u8 scan_page;
+ u8 scan_channel;
+ struct ieee802154_beacon_req_frame scan_beacon_req;
+ struct cfg802154_scan_request __rcu *scan_req;
+ struct delayed_work scan_work;
+
+ /* Beaconing */
+ unsigned int beacon_interval;
+ struct ieee802154_beacon_frame beacon;
+ struct cfg802154_beacon_request __rcu *beacon_req;
+ struct delayed_work beacon_work;
+
+ /* Asynchronous tasks */
+ struct list_head rx_beacon_list;
+ struct work_struct rx_beacon_work;
+ struct list_head rx_mac_cmd_list;
+ struct work_struct rx_mac_cmd_work;
+
+ bool started;
+ bool suspended;
+ unsigned long ongoing;
+
+ struct tasklet_struct tasklet;
+ struct sk_buff_head skb_queue;
+
+ struct sk_buff *tx_skb;
+ struct work_struct sync_tx_work;
+ /* A negative Linux error code or a null/positive MLME error status */
+ int tx_result;
+};
+
+enum {
+ IEEE802154_RX_MSG = 1,
+};
+
+enum ieee802154_sdata_state_bits {
+ SDATA_STATE_RUNNING,
+};
+
+/* Slave interface definition.
+ *
+ * Slaves represent typical network interfaces available from userspace.
+ * Each ieee802154 device/transceiver may have several slaves and able
+ * to be associated with several networks at the same time.
+ */
+struct ieee802154_sub_if_data {
+ struct list_head list; /* the ieee802154_priv->slaves list */
+
+ struct wpan_dev wpan_dev;
+
+ struct ieee802154_local *local;
+ struct net_device *dev;
+
+ /* Each interface starts and works in nominal state at a given filtering
+ * level given by iface_default_filtering, which is set once for all at
+ * the interface creation and should not evolve over time. For some MAC
+ * operations however, the filtering level may change temporarily, as
+ * reflected in the required_filtering field. The actual filtering at
+ * the PHY level may be different and is shown in struct wpan_phy.
+ */
+ enum ieee802154_filtering_level iface_default_filtering;
+ enum ieee802154_filtering_level required_filtering;
+
+ unsigned long state;
+ char name[IFNAMSIZ];
+
+ /* protects sec from concurrent access by netlink. access by
+ * encrypt/decrypt/header_create safe without additional protection.
+ */
+ struct mutex sec_mtx;
+
+ struct mac802154_llsec sec;
+};
+
+/* utility functions/constants */
+extern const void *const mac802154_wpan_phy_privid; /* for wpan_phy privid */
+
+static inline struct ieee802154_local *
+hw_to_local(struct ieee802154_hw *hw)
+{
+ return container_of(hw, struct ieee802154_local, hw);
+}
+
+static inline struct ieee802154_sub_if_data *
+IEEE802154_DEV_TO_SUB_IF(const struct net_device *dev)
+{
+ return netdev_priv(dev);
+}
+
+static inline struct ieee802154_sub_if_data *
+IEEE802154_WPAN_DEV_TO_SUB_IF(struct wpan_dev *wpan_dev)
+{
+ return container_of(wpan_dev, struct ieee802154_sub_if_data, wpan_dev);
+}
+
+static inline bool
+ieee802154_sdata_running(struct ieee802154_sub_if_data *sdata)
+{
+ return test_bit(SDATA_STATE_RUNNING, &sdata->state);
+}
+
+static inline int ieee802154_get_mac_cmd(struct sk_buff *skb, u8 *mac_cmd)
+{
+ struct ieee802154_mac_cmd_pl mac_pl;
+ int ret;
+
+ if (mac_cb(skb)->type != IEEE802154_FC_TYPE_MAC_CMD)
+ return -EINVAL;
+
+ ret = ieee802154_mac_cmd_pl_pull(skb, &mac_pl);
+ if (ret)
+ return ret;
+
+ *mac_cmd = mac_pl.cmd_id;
+ return 0;
+}
+
+extern struct ieee802154_mlme_ops mac802154_mlme_wpan;
+
+void ieee802154_rx(struct ieee802154_local *local, struct sk_buff *skb);
+void ieee802154_xmit_sync_worker(struct work_struct *work);
+int ieee802154_sync_and_hold_queue(struct ieee802154_local *local);
+int ieee802154_mlme_op_pre(struct ieee802154_local *local);
+int ieee802154_mlme_tx(struct ieee802154_local *local,
+ struct ieee802154_sub_if_data *sdata,
+ struct sk_buff *skb);
+int ieee802154_mlme_tx_locked(struct ieee802154_local *local,
+ struct ieee802154_sub_if_data *sdata,
+ struct sk_buff *skb);
+void ieee802154_mlme_op_post(struct ieee802154_local *local);
+int ieee802154_mlme_tx_one(struct ieee802154_local *local,
+ struct ieee802154_sub_if_data *sdata,
+ struct sk_buff *skb);
+int ieee802154_mlme_tx_one_locked(struct ieee802154_local *local,
+ struct ieee802154_sub_if_data *sdata,
+ struct sk_buff *skb);
+netdev_tx_t
+ieee802154_monitor_start_xmit(struct sk_buff *skb, struct net_device *dev);
+netdev_tx_t
+ieee802154_subif_start_xmit(struct sk_buff *skb, struct net_device *dev);
+enum hrtimer_restart ieee802154_xmit_ifs_timer(struct hrtimer *timer);
+
+/**
+ * ieee802154_hold_queue - hold ieee802154 queue
+ * @local: main mac object
+ *
+ * Hold a queue by incrementing an atomic counter and requesting the netif
+ * queues to be stopped. The queues cannot be woken up while the counter has not
+ * been reset with as any ieee802154_release_queue() calls as needed.
+ */
+void ieee802154_hold_queue(struct ieee802154_local *local);
+
+/**
+ * ieee802154_release_queue - release ieee802154 queue
+ * @local: main mac object
+ *
+ * Release a queue which is held by decrementing an atomic counter and wake it
+ * up only if the counter reaches 0.
+ */
+void ieee802154_release_queue(struct ieee802154_local *local);
+
+/**
+ * ieee802154_disable_queue - disable ieee802154 queue
+ * @local: main mac object
+ *
+ * When trying to sync the Tx queue, we cannot just stop the queue
+ * (which is basically a bit being set without proper lock handling)
+ * because it would be racy. We actually need to call netif_tx_disable()
+ * instead, which is done by this helper. Restarting the queue can
+ * however still be done with a regular wake call.
+ */
+void ieee802154_disable_queue(struct ieee802154_local *local);
+
+/* MIB callbacks */
+void mac802154_dev_set_page_channel(struct net_device *dev, u8 page, u8 chan);
+
+int mac802154_get_params(struct net_device *dev,
+ struct ieee802154_llsec_params *params);
+int mac802154_set_params(struct net_device *dev,
+ const struct ieee802154_llsec_params *params,
+ int changed);
+
+int mac802154_add_key(struct net_device *dev,
+ const struct ieee802154_llsec_key_id *id,
+ const struct ieee802154_llsec_key *key);
+int mac802154_del_key(struct net_device *dev,
+ const struct ieee802154_llsec_key_id *id);
+
+int mac802154_add_dev(struct net_device *dev,
+ const struct ieee802154_llsec_device *llsec_dev);
+int mac802154_del_dev(struct net_device *dev, __le64 dev_addr);
+
+int mac802154_add_devkey(struct net_device *dev,
+ __le64 device_addr,
+ const struct ieee802154_llsec_device_key *key);
+int mac802154_del_devkey(struct net_device *dev,
+ __le64 device_addr,
+ const struct ieee802154_llsec_device_key *key);
+
+int mac802154_add_seclevel(struct net_device *dev,
+ const struct ieee802154_llsec_seclevel *sl);
+int mac802154_del_seclevel(struct net_device *dev,
+ const struct ieee802154_llsec_seclevel *sl);
+
+void mac802154_lock_table(struct net_device *dev);
+void mac802154_get_table(struct net_device *dev,
+ struct ieee802154_llsec_table **t);
+void mac802154_unlock_table(struct net_device *dev);
+
+int mac802154_wpan_update_llsec(struct net_device *dev);
+
+/* PAN management handling */
+void mac802154_scan_worker(struct work_struct *work);
+int mac802154_trigger_scan_locked(struct ieee802154_sub_if_data *sdata,
+ struct cfg802154_scan_request *request);
+int mac802154_abort_scan_locked(struct ieee802154_local *local,
+ struct ieee802154_sub_if_data *sdata);
+int mac802154_process_beacon(struct ieee802154_local *local,
+ struct sk_buff *skb,
+ u8 page, u8 channel);
+void mac802154_rx_beacon_worker(struct work_struct *work);
+
+static inline bool mac802154_is_scanning(struct ieee802154_local *local)
+{
+ return test_bit(IEEE802154_IS_SCANNING, &local->ongoing);
+}
+
+void mac802154_beacon_worker(struct work_struct *work);
+int mac802154_send_beacons_locked(struct ieee802154_sub_if_data *sdata,
+ struct cfg802154_beacon_request *request);
+int mac802154_stop_beacons_locked(struct ieee802154_local *local,
+ struct ieee802154_sub_if_data *sdata);
+
+static inline bool mac802154_is_beaconing(struct ieee802154_local *local)
+{
+ return test_bit(IEEE802154_IS_BEACONING, &local->ongoing);
+}
+
+void mac802154_rx_mac_cmd_worker(struct work_struct *work);
+
+/* interface handling */
+int ieee802154_iface_init(void);
+void ieee802154_iface_exit(void);
+void ieee802154_if_remove(struct ieee802154_sub_if_data *sdata);
+struct net_device *
+ieee802154_if_add(struct ieee802154_local *local, const char *name,
+ unsigned char name_assign_type, enum nl802154_iftype type,
+ __le64 extended_addr);
+void ieee802154_remove_interfaces(struct ieee802154_local *local);
+void ieee802154_stop_device(struct ieee802154_local *local);
+
+#endif /* __IEEE802154_I_H */
diff --git a/net/mac802154/iface.c b/net/mac802154/iface.c
new file mode 100644
index 0000000000..c0e2da5072
--- /dev/null
+++ b/net/mac802154/iface.c
@@ -0,0 +1,740 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright 2007-2012 Siemens AG
+ *
+ * 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/module.h>
+#include <linux/if_arp.h>
+#include <linux/ieee802154.h>
+
+#include <net/nl802154.h>
+#include <net/mac802154.h>
+#include <net/ieee802154_netdev.h>
+#include <net/cfg802154.h>
+
+#include "ieee802154_i.h"
+#include "driver-ops.h"
+
+int mac802154_wpan_update_llsec(struct net_device *dev)
+{
+ struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
+ struct ieee802154_mlme_ops *ops = ieee802154_mlme_ops(dev);
+ struct wpan_dev *wpan_dev = &sdata->wpan_dev;
+ int rc = 0;
+
+ if (ops->llsec) {
+ struct ieee802154_llsec_params params;
+ int changed = 0;
+
+ params.pan_id = wpan_dev->pan_id;
+ changed |= IEEE802154_LLSEC_PARAM_PAN_ID;
+
+ params.hwaddr = wpan_dev->extended_addr;
+ changed |= IEEE802154_LLSEC_PARAM_HWADDR;
+
+ rc = ops->llsec->set_params(dev, &params, changed);
+ }
+
+ return rc;
+}
+
+static int
+mac802154_wpan_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
+{
+ struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
+ struct wpan_dev *wpan_dev = &sdata->wpan_dev;
+ struct sockaddr_ieee802154 *sa =
+ (struct sockaddr_ieee802154 *)&ifr->ifr_addr;
+ int err = -ENOIOCTLCMD;
+
+ if (cmd != SIOCGIFADDR && cmd != SIOCSIFADDR)
+ return err;
+
+ rtnl_lock();
+
+ switch (cmd) {
+ case SIOCGIFADDR:
+ {
+ u16 pan_id, short_addr;
+
+ pan_id = le16_to_cpu(wpan_dev->pan_id);
+ short_addr = le16_to_cpu(wpan_dev->short_addr);
+ if (pan_id == IEEE802154_PANID_BROADCAST ||
+ short_addr == IEEE802154_ADDR_BROADCAST) {
+ err = -EADDRNOTAVAIL;
+ break;
+ }
+
+ sa->family = AF_IEEE802154;
+ sa->addr.addr_type = IEEE802154_ADDR_SHORT;
+ sa->addr.pan_id = pan_id;
+ sa->addr.short_addr = short_addr;
+
+ err = 0;
+ break;
+ }
+ case SIOCSIFADDR:
+ if (netif_running(dev)) {
+ rtnl_unlock();
+ return -EBUSY;
+ }
+
+ dev_warn(&dev->dev,
+ "Using DEBUGing ioctl SIOCSIFADDR isn't recommended!\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) {
+ err = -EINVAL;
+ break;
+ }
+
+ wpan_dev->pan_id = cpu_to_le16(sa->addr.pan_id);
+ wpan_dev->short_addr = cpu_to_le16(sa->addr.short_addr);
+
+ err = mac802154_wpan_update_llsec(dev);
+ break;
+ }
+
+ rtnl_unlock();
+ return err;
+}
+
+static int mac802154_wpan_mac_addr(struct net_device *dev, void *p)
+{
+ struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
+ struct sockaddr *addr = p;
+ __le64 extended_addr;
+
+ if (netif_running(dev))
+ return -EBUSY;
+
+ /* lowpan need to be down for update
+ * SLAAC address after ifup
+ */
+ if (sdata->wpan_dev.lowpan_dev) {
+ if (netif_running(sdata->wpan_dev.lowpan_dev))
+ return -EBUSY;
+ }
+
+ ieee802154_be64_to_le64(&extended_addr, addr->sa_data);
+ if (!ieee802154_is_valid_extended_unicast_addr(extended_addr))
+ return -EINVAL;
+
+ dev_addr_set(dev, addr->sa_data);
+ sdata->wpan_dev.extended_addr = extended_addr;
+
+ /* update lowpan interface mac address when
+ * wpan mac has been changed
+ */
+ if (sdata->wpan_dev.lowpan_dev)
+ dev_addr_set(sdata->wpan_dev.lowpan_dev, dev->dev_addr);
+
+ return mac802154_wpan_update_llsec(dev);
+}
+
+static int ieee802154_setup_hw(struct ieee802154_sub_if_data *sdata)
+{
+ struct ieee802154_local *local = sdata->local;
+ struct wpan_dev *wpan_dev = &sdata->wpan_dev;
+ int ret;
+
+ sdata->required_filtering = sdata->iface_default_filtering;
+
+ if (local->hw.flags & IEEE802154_HW_AFILT) {
+ local->addr_filt.pan_id = wpan_dev->pan_id;
+ local->addr_filt.ieee_addr = wpan_dev->extended_addr;
+ local->addr_filt.short_addr = wpan_dev->short_addr;
+ }
+
+ if (local->hw.flags & IEEE802154_HW_LBT) {
+ ret = drv_set_lbt_mode(local, wpan_dev->lbt);
+ if (ret < 0)
+ return ret;
+ }
+
+ if (local->hw.flags & IEEE802154_HW_CSMA_PARAMS) {
+ ret = drv_set_csma_params(local, wpan_dev->min_be,
+ wpan_dev->max_be,
+ wpan_dev->csma_retries);
+ if (ret < 0)
+ return ret;
+ }
+
+ if (local->hw.flags & IEEE802154_HW_FRAME_RETRIES) {
+ ret = drv_set_max_frame_retries(local, wpan_dev->frame_retries);
+ if (ret < 0)
+ return ret;
+ }
+
+ return 0;
+}
+
+static int mac802154_slave_open(struct net_device *dev)
+{
+ struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
+ struct ieee802154_local *local = sdata->local;
+ int res;
+
+ ASSERT_RTNL();
+
+ set_bit(SDATA_STATE_RUNNING, &sdata->state);
+
+ if (!local->open_count) {
+ res = ieee802154_setup_hw(sdata);
+ if (res)
+ goto err;
+
+ res = drv_start(local, sdata->required_filtering,
+ &local->addr_filt);
+ if (res)
+ goto err;
+ }
+
+ local->open_count++;
+ netif_start_queue(dev);
+ return 0;
+err:
+ /* might already be clear but that doesn't matter */
+ clear_bit(SDATA_STATE_RUNNING, &sdata->state);
+
+ return res;
+}
+
+static int
+ieee802154_check_mac_settings(struct ieee802154_local *local,
+ struct ieee802154_sub_if_data *sdata,
+ struct ieee802154_sub_if_data *nsdata)
+{
+ struct wpan_dev *nwpan_dev = &nsdata->wpan_dev;
+ struct wpan_dev *wpan_dev = &sdata->wpan_dev;
+
+ ASSERT_RTNL();
+
+ if (sdata->iface_default_filtering != nsdata->iface_default_filtering)
+ return -EBUSY;
+
+ if (local->hw.flags & IEEE802154_HW_AFILT) {
+ if (wpan_dev->pan_id != nwpan_dev->pan_id ||
+ wpan_dev->short_addr != nwpan_dev->short_addr ||
+ wpan_dev->extended_addr != nwpan_dev->extended_addr)
+ return -EBUSY;
+ }
+
+ if (local->hw.flags & IEEE802154_HW_CSMA_PARAMS) {
+ if (wpan_dev->min_be != nwpan_dev->min_be ||
+ wpan_dev->max_be != nwpan_dev->max_be ||
+ wpan_dev->csma_retries != nwpan_dev->csma_retries)
+ return -EBUSY;
+ }
+
+ if (local->hw.flags & IEEE802154_HW_FRAME_RETRIES) {
+ if (wpan_dev->frame_retries != nwpan_dev->frame_retries)
+ return -EBUSY;
+ }
+
+ if (local->hw.flags & IEEE802154_HW_LBT) {
+ if (wpan_dev->lbt != nwpan_dev->lbt)
+ return -EBUSY;
+ }
+
+ return 0;
+}
+
+static int
+ieee802154_check_concurrent_iface(struct ieee802154_sub_if_data *sdata,
+ enum nl802154_iftype iftype)
+{
+ struct ieee802154_local *local = sdata->local;
+ struct ieee802154_sub_if_data *nsdata;
+
+ /* we hold the RTNL here so can safely walk the list */
+ list_for_each_entry(nsdata, &local->interfaces, list) {
+ if (nsdata != sdata && ieee802154_sdata_running(nsdata)) {
+ int ret;
+
+ /* TODO currently we don't support multiple node/coord
+ * types we need to run skb_clone at rx path. Check if
+ * there exist really an use case if we need to support
+ * multiple node/coord types at the same time.
+ */
+ if (sdata->wpan_dev.iftype != NL802154_IFTYPE_MONITOR &&
+ nsdata->wpan_dev.iftype != NL802154_IFTYPE_MONITOR)
+ return -EBUSY;
+
+ /* check all phy mac sublayer settings are the same.
+ * We have only one phy, different values makes trouble.
+ */
+ ret = ieee802154_check_mac_settings(local, sdata, nsdata);
+ if (ret < 0)
+ return ret;
+ }
+ }
+
+ return 0;
+}
+
+static int mac802154_wpan_open(struct net_device *dev)
+{
+ int rc;
+ struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
+ struct wpan_dev *wpan_dev = &sdata->wpan_dev;
+
+ rc = ieee802154_check_concurrent_iface(sdata, wpan_dev->iftype);
+ if (rc < 0)
+ return rc;
+
+ return mac802154_slave_open(dev);
+}
+
+static int mac802154_slave_close(struct net_device *dev)
+{
+ struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
+ struct ieee802154_local *local = sdata->local;
+
+ ASSERT_RTNL();
+
+ if (mac802154_is_scanning(local))
+ mac802154_abort_scan_locked(local, sdata);
+
+ if (mac802154_is_beaconing(local))
+ mac802154_stop_beacons_locked(local, sdata);
+
+ netif_stop_queue(dev);
+ local->open_count--;
+
+ clear_bit(SDATA_STATE_RUNNING, &sdata->state);
+
+ if (!local->open_count)
+ ieee802154_stop_device(local);
+
+ return 0;
+}
+
+static int mac802154_set_header_security(struct ieee802154_sub_if_data *sdata,
+ struct ieee802154_hdr *hdr,
+ const struct ieee802154_mac_cb *cb)
+{
+ struct ieee802154_llsec_params params;
+ u8 level;
+
+ mac802154_llsec_get_params(&sdata->sec, &params);
+
+ if (!params.enabled && cb->secen_override && cb->secen)
+ return -EINVAL;
+ if (!params.enabled ||
+ (cb->secen_override && !cb->secen) ||
+ !params.out_level)
+ return 0;
+ if (cb->seclevel_override && !cb->seclevel)
+ return -EINVAL;
+
+ level = cb->seclevel_override ? cb->seclevel : params.out_level;
+
+ hdr->fc.security_enabled = 1;
+ hdr->sec.level = level;
+ hdr->sec.key_id_mode = params.out_key.mode;
+ if (params.out_key.mode == IEEE802154_SCF_KEY_SHORT_INDEX)
+ hdr->sec.short_src = params.out_key.short_source;
+ else if (params.out_key.mode == IEEE802154_SCF_KEY_HW_INDEX)
+ hdr->sec.extended_src = params.out_key.extended_source;
+ hdr->sec.key_id = params.out_key.id;
+
+ return 0;
+}
+
+static int ieee802154_header_create(struct sk_buff *skb,
+ struct net_device *dev,
+ const struct ieee802154_addr *daddr,
+ const struct ieee802154_addr *saddr,
+ unsigned len)
+{
+ struct ieee802154_hdr hdr;
+ struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
+ struct wpan_dev *wpan_dev = &sdata->wpan_dev;
+ struct ieee802154_mac_cb *cb = mac_cb(skb);
+ int hlen;
+
+ if (!daddr)
+ return -EINVAL;
+
+ memset(&hdr.fc, 0, sizeof(hdr.fc));
+ hdr.fc.type = cb->type;
+ hdr.fc.security_enabled = cb->secen;
+ hdr.fc.ack_request = cb->ackreq;
+ hdr.seq = atomic_inc_return(&dev->ieee802154_ptr->dsn) & 0xFF;
+
+ if (mac802154_set_header_security(sdata, &hdr, cb) < 0)
+ return -EINVAL;
+
+ if (!saddr) {
+ if (wpan_dev->short_addr == cpu_to_le16(IEEE802154_ADDR_BROADCAST) ||
+ wpan_dev->short_addr == cpu_to_le16(IEEE802154_ADDR_UNDEF) ||
+ wpan_dev->pan_id == cpu_to_le16(IEEE802154_PANID_BROADCAST)) {
+ hdr.source.mode = IEEE802154_ADDR_LONG;
+ hdr.source.extended_addr = wpan_dev->extended_addr;
+ } else {
+ hdr.source.mode = IEEE802154_ADDR_SHORT;
+ hdr.source.short_addr = wpan_dev->short_addr;
+ }
+
+ hdr.source.pan_id = wpan_dev->pan_id;
+ } else {
+ hdr.source = *(const struct ieee802154_addr *)saddr;
+ }
+
+ hdr.dest = *(const struct ieee802154_addr *)daddr;
+
+ hlen = ieee802154_hdr_push(skb, &hdr);
+ if (hlen < 0)
+ return -EINVAL;
+
+ skb_reset_mac_header(skb);
+ skb->mac_len = hlen;
+
+ if (len > ieee802154_max_payload(&hdr))
+ return -EMSGSIZE;
+
+ return hlen;
+}
+
+static const struct wpan_dev_header_ops ieee802154_header_ops = {
+ .create = ieee802154_header_create,
+};
+
+/* This header create functionality assumes a 8 byte array for
+ * source and destination pointer at maximum. To adapt this for
+ * the 802.15.4 dataframe header we use extended address handling
+ * here only and intra pan connection. fc fields are mostly fallback
+ * handling. For provide dev_hard_header for dgram sockets.
+ */
+static int mac802154_header_create(struct sk_buff *skb,
+ struct net_device *dev,
+ unsigned short type,
+ const void *daddr,
+ const void *saddr,
+ unsigned len)
+{
+ struct ieee802154_hdr hdr;
+ struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
+ struct wpan_dev *wpan_dev = &sdata->wpan_dev;
+ struct ieee802154_mac_cb cb = { };
+ int hlen;
+
+ if (!daddr)
+ return -EINVAL;
+
+ memset(&hdr.fc, 0, sizeof(hdr.fc));
+ hdr.fc.type = IEEE802154_FC_TYPE_DATA;
+ hdr.fc.ack_request = wpan_dev->ackreq;
+ hdr.seq = atomic_inc_return(&dev->ieee802154_ptr->dsn) & 0xFF;
+
+ /* TODO currently a workaround to give zero cb block to set
+ * security parameters defaults according MIB.
+ */
+ if (mac802154_set_header_security(sdata, &hdr, &cb) < 0)
+ return -EINVAL;
+
+ hdr.dest.pan_id = wpan_dev->pan_id;
+ hdr.dest.mode = IEEE802154_ADDR_LONG;
+ ieee802154_be64_to_le64(&hdr.dest.extended_addr, daddr);
+
+ hdr.source.pan_id = hdr.dest.pan_id;
+ hdr.source.mode = IEEE802154_ADDR_LONG;
+
+ if (!saddr)
+ hdr.source.extended_addr = wpan_dev->extended_addr;
+ else
+ ieee802154_be64_to_le64(&hdr.source.extended_addr, saddr);
+
+ hlen = ieee802154_hdr_push(skb, &hdr);
+ if (hlen < 0)
+ return -EINVAL;
+
+ skb_reset_mac_header(skb);
+ skb->mac_len = hlen;
+
+ if (len > ieee802154_max_payload(&hdr))
+ return -EMSGSIZE;
+
+ return hlen;
+}
+
+static int
+mac802154_header_parse(const struct sk_buff *skb, unsigned char *haddr)
+{
+ struct ieee802154_hdr hdr;
+
+ if (ieee802154_hdr_peek_addrs(skb, &hdr) < 0) {
+ pr_debug("malformed packet\n");
+ return 0;
+ }
+
+ if (hdr.source.mode == IEEE802154_ADDR_LONG) {
+ ieee802154_le64_to_be64(haddr, &hdr.source.extended_addr);
+ return IEEE802154_EXTENDED_ADDR_LEN;
+ }
+
+ return 0;
+}
+
+static const struct header_ops mac802154_header_ops = {
+ .create = mac802154_header_create,
+ .parse = mac802154_header_parse,
+};
+
+static const struct net_device_ops mac802154_wpan_ops = {
+ .ndo_open = mac802154_wpan_open,
+ .ndo_stop = mac802154_slave_close,
+ .ndo_start_xmit = ieee802154_subif_start_xmit,
+ .ndo_do_ioctl = mac802154_wpan_ioctl,
+ .ndo_set_mac_address = mac802154_wpan_mac_addr,
+};
+
+static const struct net_device_ops mac802154_monitor_ops = {
+ .ndo_open = mac802154_wpan_open,
+ .ndo_stop = mac802154_slave_close,
+ .ndo_start_xmit = ieee802154_monitor_start_xmit,
+};
+
+static void mac802154_wpan_free(struct net_device *dev)
+{
+ struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
+
+ mac802154_llsec_destroy(&sdata->sec);
+}
+
+static void ieee802154_if_setup(struct net_device *dev)
+{
+ dev->addr_len = IEEE802154_EXTENDED_ADDR_LEN;
+ memset(dev->broadcast, 0xff, IEEE802154_EXTENDED_ADDR_LEN);
+
+ /* Let hard_header_len set to IEEE802154_MIN_HEADER_LEN. AF_PACKET
+ * will not send frames without any payload, but ack frames
+ * has no payload, so substract one that we can send a 3 bytes
+ * frame. The xmit callback assumes at least a hard header where two
+ * bytes fc and sequence field are set.
+ */
+ dev->hard_header_len = IEEE802154_MIN_HEADER_LEN - 1;
+ /* The auth_tag header is for security and places in private payload
+ * room of mac frame which stucks between payload and FCS field.
+ */
+ dev->needed_tailroom = IEEE802154_MAX_AUTH_TAG_LEN +
+ IEEE802154_FCS_LEN;
+ /* The mtu size is the payload without mac header in this case.
+ * We have a dynamic length header with a minimum header length
+ * which is hard_header_len. In this case we let mtu to the size
+ * of maximum payload which is IEEE802154_MTU - IEEE802154_FCS_LEN -
+ * hard_header_len. The FCS which is set by hardware or ndo_start_xmit
+ * and the minimum mac header which can be evaluated inside driver
+ * layer. The rest of mac header will be part of payload if greater
+ * than hard_header_len.
+ */
+ dev->mtu = IEEE802154_MTU - IEEE802154_FCS_LEN -
+ dev->hard_header_len;
+ dev->tx_queue_len = 300;
+ dev->flags = IFF_NOARP | IFF_BROADCAST;
+}
+
+static int
+ieee802154_setup_sdata(struct ieee802154_sub_if_data *sdata,
+ enum nl802154_iftype type)
+{
+ struct wpan_dev *wpan_dev = &sdata->wpan_dev;
+ int ret;
+ u8 tmp;
+
+ /* set some type-dependent values */
+ sdata->wpan_dev.iftype = type;
+
+ get_random_bytes(&tmp, sizeof(tmp));
+ atomic_set(&wpan_dev->bsn, tmp);
+ get_random_bytes(&tmp, sizeof(tmp));
+ atomic_set(&wpan_dev->dsn, tmp);
+
+ /* defaults per 802.15.4-2011 */
+ wpan_dev->min_be = 3;
+ wpan_dev->max_be = 5;
+ wpan_dev->csma_retries = 4;
+ wpan_dev->frame_retries = 3;
+
+ wpan_dev->pan_id = cpu_to_le16(IEEE802154_PANID_BROADCAST);
+ wpan_dev->short_addr = cpu_to_le16(IEEE802154_ADDR_BROADCAST);
+
+ switch (type) {
+ case NL802154_IFTYPE_COORD:
+ case NL802154_IFTYPE_NODE:
+ ieee802154_be64_to_le64(&wpan_dev->extended_addr,
+ sdata->dev->dev_addr);
+
+ sdata->dev->header_ops = &mac802154_header_ops;
+ sdata->dev->needs_free_netdev = true;
+ sdata->dev->priv_destructor = mac802154_wpan_free;
+ sdata->dev->netdev_ops = &mac802154_wpan_ops;
+ sdata->dev->ml_priv = &mac802154_mlme_wpan;
+ sdata->iface_default_filtering = IEEE802154_FILTERING_4_FRAME_FIELDS;
+ wpan_dev->header_ops = &ieee802154_header_ops;
+
+ mutex_init(&sdata->sec_mtx);
+
+ mac802154_llsec_init(&sdata->sec);
+ ret = mac802154_wpan_update_llsec(sdata->dev);
+ if (ret < 0)
+ return ret;
+
+ break;
+ case NL802154_IFTYPE_MONITOR:
+ sdata->dev->needs_free_netdev = true;
+ sdata->dev->netdev_ops = &mac802154_monitor_ops;
+ sdata->iface_default_filtering = IEEE802154_FILTERING_NONE;
+ break;
+ default:
+ BUG();
+ }
+
+ return 0;
+}
+
+struct net_device *
+ieee802154_if_add(struct ieee802154_local *local, const char *name,
+ unsigned char name_assign_type, enum nl802154_iftype type,
+ __le64 extended_addr)
+{
+ u8 addr[IEEE802154_EXTENDED_ADDR_LEN];
+ struct net_device *ndev = NULL;
+ struct ieee802154_sub_if_data *sdata = NULL;
+ int ret;
+
+ ASSERT_RTNL();
+
+ ndev = alloc_netdev(sizeof(*sdata), name,
+ name_assign_type, ieee802154_if_setup);
+ if (!ndev)
+ return ERR_PTR(-ENOMEM);
+
+ ndev->needed_headroom = local->hw.extra_tx_headroom +
+ IEEE802154_MAX_HEADER_LEN;
+
+ ret = dev_alloc_name(ndev, ndev->name);
+ if (ret < 0)
+ goto err;
+
+ ieee802154_le64_to_be64(ndev->perm_addr,
+ &local->hw.phy->perm_extended_addr);
+ switch (type) {
+ case NL802154_IFTYPE_COORD:
+ case NL802154_IFTYPE_NODE:
+ ndev->type = ARPHRD_IEEE802154;
+ if (ieee802154_is_valid_extended_unicast_addr(extended_addr)) {
+ ieee802154_le64_to_be64(addr, &extended_addr);
+ dev_addr_set(ndev, addr);
+ } else {
+ dev_addr_set(ndev, ndev->perm_addr);
+ }
+ break;
+ case NL802154_IFTYPE_MONITOR:
+ ndev->type = ARPHRD_IEEE802154_MONITOR;
+ break;
+ default:
+ ret = -EINVAL;
+ goto err;
+ }
+
+ /* TODO check this */
+ SET_NETDEV_DEV(ndev, &local->phy->dev);
+ dev_net_set(ndev, wpan_phy_net(local->hw.phy));
+ sdata = netdev_priv(ndev);
+ ndev->ieee802154_ptr = &sdata->wpan_dev;
+ memcpy(sdata->name, ndev->name, IFNAMSIZ);
+ sdata->dev = ndev;
+ sdata->wpan_dev.wpan_phy = local->hw.phy;
+ sdata->local = local;
+ INIT_LIST_HEAD(&sdata->wpan_dev.list);
+
+ /* setup type-dependent data */
+ ret = ieee802154_setup_sdata(sdata, type);
+ if (ret)
+ goto err;
+
+ ret = register_netdevice(ndev);
+ if (ret < 0)
+ goto err;
+
+ mutex_lock(&local->iflist_mtx);
+ list_add_tail_rcu(&sdata->list, &local->interfaces);
+ mutex_unlock(&local->iflist_mtx);
+
+ return ndev;
+
+err:
+ free_netdev(ndev);
+ return ERR_PTR(ret);
+}
+
+void ieee802154_if_remove(struct ieee802154_sub_if_data *sdata)
+{
+ ASSERT_RTNL();
+
+ mutex_lock(&sdata->local->iflist_mtx);
+ list_del_rcu(&sdata->list);
+ mutex_unlock(&sdata->local->iflist_mtx);
+
+ synchronize_rcu();
+ unregister_netdevice(sdata->dev);
+}
+
+void ieee802154_remove_interfaces(struct ieee802154_local *local)
+{
+ struct ieee802154_sub_if_data *sdata, *tmp;
+
+ mutex_lock(&local->iflist_mtx);
+ list_for_each_entry_safe(sdata, tmp, &local->interfaces, list) {
+ list_del(&sdata->list);
+
+ unregister_netdevice(sdata->dev);
+ }
+ mutex_unlock(&local->iflist_mtx);
+}
+
+static int netdev_notify(struct notifier_block *nb,
+ unsigned long state, void *ptr)
+{
+ struct net_device *dev = netdev_notifier_info_to_dev(ptr);
+ struct ieee802154_sub_if_data *sdata;
+
+ if (state != NETDEV_CHANGENAME)
+ return NOTIFY_DONE;
+
+ if (!dev->ieee802154_ptr || !dev->ieee802154_ptr->wpan_phy)
+ return NOTIFY_DONE;
+
+ if (dev->ieee802154_ptr->wpan_phy->privid != mac802154_wpan_phy_privid)
+ return NOTIFY_DONE;
+
+ sdata = IEEE802154_DEV_TO_SUB_IF(dev);
+ memcpy(sdata->name, dev->name, IFNAMSIZ);
+
+ return NOTIFY_OK;
+}
+
+static struct notifier_block mac802154_netdev_notifier = {
+ .notifier_call = netdev_notify,
+};
+
+int ieee802154_iface_init(void)
+{
+ return register_netdevice_notifier(&mac802154_netdev_notifier);
+}
+
+void ieee802154_iface_exit(void)
+{
+ unregister_netdevice_notifier(&mac802154_netdev_notifier);
+}
diff --git a/net/mac802154/llsec.c b/net/mac802154/llsec.c
new file mode 100644
index 0000000000..8d2eabc71b
--- /dev/null
+++ b/net/mac802154/llsec.c
@@ -0,0 +1,1053 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2014 Fraunhofer ITWM
+ *
+ * Written by:
+ * Phoebe Buckheister <phoebe.buckheister@itwm.fraunhofer.de>
+ */
+
+#include <linux/err.h>
+#include <linux/bug.h>
+#include <linux/completion.h>
+#include <linux/ieee802154.h>
+#include <linux/rculist.h>
+
+#include <crypto/aead.h>
+#include <crypto/skcipher.h>
+
+#include "ieee802154_i.h"
+#include "llsec.h"
+
+static void llsec_key_put(struct mac802154_llsec_key *key);
+static bool llsec_key_id_equal(const struct ieee802154_llsec_key_id *a,
+ const struct ieee802154_llsec_key_id *b);
+
+static void llsec_dev_free(struct mac802154_llsec_device *dev);
+
+void mac802154_llsec_init(struct mac802154_llsec *sec)
+{
+ memset(sec, 0, sizeof(*sec));
+
+ memset(&sec->params.default_key_source, 0xFF, IEEE802154_ADDR_LEN);
+
+ INIT_LIST_HEAD(&sec->table.security_levels);
+ INIT_LIST_HEAD(&sec->table.devices);
+ INIT_LIST_HEAD(&sec->table.keys);
+ hash_init(sec->devices_short);
+ hash_init(sec->devices_hw);
+ rwlock_init(&sec->lock);
+}
+
+void mac802154_llsec_destroy(struct mac802154_llsec *sec)
+{
+ struct ieee802154_llsec_seclevel *sl, *sn;
+ struct ieee802154_llsec_device *dev, *dn;
+ struct ieee802154_llsec_key_entry *key, *kn;
+
+ list_for_each_entry_safe(sl, sn, &sec->table.security_levels, list) {
+ struct mac802154_llsec_seclevel *msl;
+
+ msl = container_of(sl, struct mac802154_llsec_seclevel, level);
+ list_del(&sl->list);
+ kfree_sensitive(msl);
+ }
+
+ list_for_each_entry_safe(dev, dn, &sec->table.devices, list) {
+ struct mac802154_llsec_device *mdev;
+
+ mdev = container_of(dev, struct mac802154_llsec_device, dev);
+ list_del(&dev->list);
+ llsec_dev_free(mdev);
+ }
+
+ list_for_each_entry_safe(key, kn, &sec->table.keys, list) {
+ struct mac802154_llsec_key *mkey;
+
+ mkey = container_of(key->key, struct mac802154_llsec_key, key);
+ list_del(&key->list);
+ llsec_key_put(mkey);
+ kfree_sensitive(key);
+ }
+}
+
+int mac802154_llsec_get_params(struct mac802154_llsec *sec,
+ struct ieee802154_llsec_params *params)
+{
+ read_lock_bh(&sec->lock);
+ *params = sec->params;
+ read_unlock_bh(&sec->lock);
+
+ return 0;
+}
+
+int mac802154_llsec_set_params(struct mac802154_llsec *sec,
+ const struct ieee802154_llsec_params *params,
+ int changed)
+{
+ write_lock_bh(&sec->lock);
+
+ if (changed & IEEE802154_LLSEC_PARAM_ENABLED)
+ sec->params.enabled = params->enabled;
+ if (changed & IEEE802154_LLSEC_PARAM_FRAME_COUNTER)
+ sec->params.frame_counter = params->frame_counter;
+ if (changed & IEEE802154_LLSEC_PARAM_OUT_LEVEL)
+ sec->params.out_level = params->out_level;
+ if (changed & IEEE802154_LLSEC_PARAM_OUT_KEY)
+ sec->params.out_key = params->out_key;
+ if (changed & IEEE802154_LLSEC_PARAM_KEY_SOURCE)
+ sec->params.default_key_source = params->default_key_source;
+ if (changed & IEEE802154_LLSEC_PARAM_PAN_ID)
+ sec->params.pan_id = params->pan_id;
+ if (changed & IEEE802154_LLSEC_PARAM_HWADDR)
+ sec->params.hwaddr = params->hwaddr;
+ if (changed & IEEE802154_LLSEC_PARAM_COORD_HWADDR)
+ sec->params.coord_hwaddr = params->coord_hwaddr;
+ if (changed & IEEE802154_LLSEC_PARAM_COORD_SHORTADDR)
+ sec->params.coord_shortaddr = params->coord_shortaddr;
+
+ write_unlock_bh(&sec->lock);
+
+ return 0;
+}
+
+static struct mac802154_llsec_key*
+llsec_key_alloc(const struct ieee802154_llsec_key *template)
+{
+ const int authsizes[3] = { 4, 8, 16 };
+ struct mac802154_llsec_key *key;
+ int i;
+
+ key = kzalloc(sizeof(*key), GFP_KERNEL);
+ if (!key)
+ return NULL;
+
+ kref_init(&key->ref);
+ key->key = *template;
+
+ BUILD_BUG_ON(ARRAY_SIZE(authsizes) != ARRAY_SIZE(key->tfm));
+
+ for (i = 0; i < ARRAY_SIZE(key->tfm); i++) {
+ key->tfm[i] = crypto_alloc_aead("ccm(aes)", 0,
+ CRYPTO_ALG_ASYNC);
+ if (IS_ERR(key->tfm[i]))
+ goto err_tfm;
+ if (crypto_aead_setkey(key->tfm[i], template->key,
+ IEEE802154_LLSEC_KEY_SIZE))
+ goto err_tfm;
+ if (crypto_aead_setauthsize(key->tfm[i], authsizes[i]))
+ goto err_tfm;
+ }
+
+ key->tfm0 = crypto_alloc_sync_skcipher("ctr(aes)", 0, 0);
+ if (IS_ERR(key->tfm0))
+ goto err_tfm;
+
+ if (crypto_sync_skcipher_setkey(key->tfm0, template->key,
+ IEEE802154_LLSEC_KEY_SIZE))
+ goto err_tfm0;
+
+ return key;
+
+err_tfm0:
+ crypto_free_sync_skcipher(key->tfm0);
+err_tfm:
+ for (i = 0; i < ARRAY_SIZE(key->tfm); i++)
+ if (!IS_ERR_OR_NULL(key->tfm[i]))
+ crypto_free_aead(key->tfm[i]);
+
+ kfree_sensitive(key);
+ return NULL;
+}
+
+static void llsec_key_release(struct kref *ref)
+{
+ struct mac802154_llsec_key *key;
+ int i;
+
+ key = container_of(ref, struct mac802154_llsec_key, ref);
+
+ for (i = 0; i < ARRAY_SIZE(key->tfm); i++)
+ crypto_free_aead(key->tfm[i]);
+
+ crypto_free_sync_skcipher(key->tfm0);
+ kfree_sensitive(key);
+}
+
+static struct mac802154_llsec_key*
+llsec_key_get(struct mac802154_llsec_key *key)
+{
+ kref_get(&key->ref);
+ return key;
+}
+
+static void llsec_key_put(struct mac802154_llsec_key *key)
+{
+ kref_put(&key->ref, llsec_key_release);
+}
+
+static bool llsec_key_id_equal(const struct ieee802154_llsec_key_id *a,
+ const struct ieee802154_llsec_key_id *b)
+{
+ if (a->mode != b->mode)
+ return false;
+
+ if (a->mode == IEEE802154_SCF_KEY_IMPLICIT)
+ return ieee802154_addr_equal(&a->device_addr, &b->device_addr);
+
+ if (a->id != b->id)
+ return false;
+
+ switch (a->mode) {
+ case IEEE802154_SCF_KEY_INDEX:
+ return true;
+ case IEEE802154_SCF_KEY_SHORT_INDEX:
+ return a->short_source == b->short_source;
+ case IEEE802154_SCF_KEY_HW_INDEX:
+ return a->extended_source == b->extended_source;
+ }
+
+ return false;
+}
+
+int mac802154_llsec_key_add(struct mac802154_llsec *sec,
+ const struct ieee802154_llsec_key_id *id,
+ const struct ieee802154_llsec_key *key)
+{
+ struct mac802154_llsec_key *mkey = NULL;
+ struct ieee802154_llsec_key_entry *pos, *new;
+
+ if (!(key->frame_types & (1 << IEEE802154_FC_TYPE_MAC_CMD)) &&
+ key->cmd_frame_ids)
+ return -EINVAL;
+
+ list_for_each_entry(pos, &sec->table.keys, list) {
+ if (llsec_key_id_equal(&pos->id, id))
+ return -EEXIST;
+
+ if (memcmp(pos->key->key, key->key,
+ IEEE802154_LLSEC_KEY_SIZE))
+ continue;
+
+ mkey = container_of(pos->key, struct mac802154_llsec_key, key);
+
+ /* Don't allow multiple instances of the same AES key to have
+ * different allowed frame types/command frame ids, as this is
+ * not possible in the 802.15.4 PIB.
+ */
+ if (pos->key->frame_types != key->frame_types ||
+ pos->key->cmd_frame_ids != key->cmd_frame_ids)
+ return -EEXIST;
+
+ break;
+ }
+
+ new = kzalloc(sizeof(*new), GFP_KERNEL);
+ if (!new)
+ return -ENOMEM;
+
+ if (!mkey)
+ mkey = llsec_key_alloc(key);
+ else
+ mkey = llsec_key_get(mkey);
+
+ if (!mkey)
+ goto fail;
+
+ new->id = *id;
+ new->key = &mkey->key;
+
+ list_add_rcu(&new->list, &sec->table.keys);
+
+ return 0;
+
+fail:
+ kfree_sensitive(new);
+ return -ENOMEM;
+}
+
+int mac802154_llsec_key_del(struct mac802154_llsec *sec,
+ const struct ieee802154_llsec_key_id *key)
+{
+ struct ieee802154_llsec_key_entry *pos;
+
+ list_for_each_entry(pos, &sec->table.keys, list) {
+ struct mac802154_llsec_key *mkey;
+
+ mkey = container_of(pos->key, struct mac802154_llsec_key, key);
+
+ if (llsec_key_id_equal(&pos->id, key)) {
+ list_del_rcu(&pos->list);
+ llsec_key_put(mkey);
+ return 0;
+ }
+ }
+
+ return -ENOENT;
+}
+
+static bool llsec_dev_use_shortaddr(__le16 short_addr)
+{
+ return short_addr != cpu_to_le16(IEEE802154_ADDR_UNDEF) &&
+ short_addr != cpu_to_le16(0xffff);
+}
+
+static u32 llsec_dev_hash_short(__le16 short_addr, __le16 pan_id)
+{
+ return ((__force u16)short_addr) << 16 | (__force u16)pan_id;
+}
+
+static u64 llsec_dev_hash_long(__le64 hwaddr)
+{
+ return (__force u64)hwaddr;
+}
+
+static struct mac802154_llsec_device*
+llsec_dev_find_short(struct mac802154_llsec *sec, __le16 short_addr,
+ __le16 pan_id)
+{
+ struct mac802154_llsec_device *dev;
+ u32 key = llsec_dev_hash_short(short_addr, pan_id);
+
+ hash_for_each_possible_rcu(sec->devices_short, dev, bucket_s, key) {
+ if (dev->dev.short_addr == short_addr &&
+ dev->dev.pan_id == pan_id)
+ return dev;
+ }
+
+ return NULL;
+}
+
+static struct mac802154_llsec_device*
+llsec_dev_find_long(struct mac802154_llsec *sec, __le64 hwaddr)
+{
+ struct mac802154_llsec_device *dev;
+ u64 key = llsec_dev_hash_long(hwaddr);
+
+ hash_for_each_possible_rcu(sec->devices_hw, dev, bucket_hw, key) {
+ if (dev->dev.hwaddr == hwaddr)
+ return dev;
+ }
+
+ return NULL;
+}
+
+static void llsec_dev_free(struct mac802154_llsec_device *dev)
+{
+ struct ieee802154_llsec_device_key *pos, *pn;
+ struct mac802154_llsec_device_key *devkey;
+
+ list_for_each_entry_safe(pos, pn, &dev->dev.keys, list) {
+ devkey = container_of(pos, struct mac802154_llsec_device_key,
+ devkey);
+
+ list_del(&pos->list);
+ kfree_sensitive(devkey);
+ }
+
+ kfree_sensitive(dev);
+}
+
+int mac802154_llsec_dev_add(struct mac802154_llsec *sec,
+ const struct ieee802154_llsec_device *dev)
+{
+ struct mac802154_llsec_device *entry;
+ u32 skey = llsec_dev_hash_short(dev->short_addr, dev->pan_id);
+ u64 hwkey = llsec_dev_hash_long(dev->hwaddr);
+
+ BUILD_BUG_ON(sizeof(hwkey) != IEEE802154_ADDR_LEN);
+
+ if ((llsec_dev_use_shortaddr(dev->short_addr) &&
+ llsec_dev_find_short(sec, dev->short_addr, dev->pan_id)) ||
+ llsec_dev_find_long(sec, dev->hwaddr))
+ return -EEXIST;
+
+ entry = kmalloc(sizeof(*entry), GFP_KERNEL);
+ if (!entry)
+ return -ENOMEM;
+
+ entry->dev = *dev;
+ spin_lock_init(&entry->lock);
+ INIT_LIST_HEAD(&entry->dev.keys);
+
+ if (llsec_dev_use_shortaddr(dev->short_addr))
+ hash_add_rcu(sec->devices_short, &entry->bucket_s, skey);
+ else
+ INIT_HLIST_NODE(&entry->bucket_s);
+
+ hash_add_rcu(sec->devices_hw, &entry->bucket_hw, hwkey);
+ list_add_tail_rcu(&entry->dev.list, &sec->table.devices);
+
+ return 0;
+}
+
+static void llsec_dev_free_rcu(struct rcu_head *rcu)
+{
+ llsec_dev_free(container_of(rcu, struct mac802154_llsec_device, rcu));
+}
+
+int mac802154_llsec_dev_del(struct mac802154_llsec *sec, __le64 device_addr)
+{
+ struct mac802154_llsec_device *pos;
+
+ pos = llsec_dev_find_long(sec, device_addr);
+ if (!pos)
+ return -ENOENT;
+
+ hash_del_rcu(&pos->bucket_s);
+ hash_del_rcu(&pos->bucket_hw);
+ list_del_rcu(&pos->dev.list);
+ call_rcu(&pos->rcu, llsec_dev_free_rcu);
+
+ return 0;
+}
+
+static struct mac802154_llsec_device_key*
+llsec_devkey_find(struct mac802154_llsec_device *dev,
+ const struct ieee802154_llsec_key_id *key)
+{
+ struct ieee802154_llsec_device_key *devkey;
+
+ list_for_each_entry_rcu(devkey, &dev->dev.keys, list) {
+ if (!llsec_key_id_equal(key, &devkey->key_id))
+ continue;
+
+ return container_of(devkey, struct mac802154_llsec_device_key,
+ devkey);
+ }
+
+ return NULL;
+}
+
+int mac802154_llsec_devkey_add(struct mac802154_llsec *sec,
+ __le64 dev_addr,
+ const struct ieee802154_llsec_device_key *key)
+{
+ struct mac802154_llsec_device *dev;
+ struct mac802154_llsec_device_key *devkey;
+
+ dev = llsec_dev_find_long(sec, dev_addr);
+
+ if (!dev)
+ return -ENOENT;
+
+ if (llsec_devkey_find(dev, &key->key_id))
+ return -EEXIST;
+
+ devkey = kmalloc(sizeof(*devkey), GFP_KERNEL);
+ if (!devkey)
+ return -ENOMEM;
+
+ devkey->devkey = *key;
+ list_add_tail_rcu(&devkey->devkey.list, &dev->dev.keys);
+ return 0;
+}
+
+int mac802154_llsec_devkey_del(struct mac802154_llsec *sec,
+ __le64 dev_addr,
+ const struct ieee802154_llsec_device_key *key)
+{
+ struct mac802154_llsec_device *dev;
+ struct mac802154_llsec_device_key *devkey;
+
+ dev = llsec_dev_find_long(sec, dev_addr);
+
+ if (!dev)
+ return -ENOENT;
+
+ devkey = llsec_devkey_find(dev, &key->key_id);
+ if (!devkey)
+ return -ENOENT;
+
+ list_del_rcu(&devkey->devkey.list);
+ kfree_rcu(devkey, rcu);
+ return 0;
+}
+
+static struct mac802154_llsec_seclevel*
+llsec_find_seclevel(const struct mac802154_llsec *sec,
+ const struct ieee802154_llsec_seclevel *sl)
+{
+ struct ieee802154_llsec_seclevel *pos;
+
+ list_for_each_entry(pos, &sec->table.security_levels, list) {
+ if (pos->frame_type != sl->frame_type ||
+ (pos->frame_type == IEEE802154_FC_TYPE_MAC_CMD &&
+ pos->cmd_frame_id != sl->cmd_frame_id) ||
+ pos->device_override != sl->device_override ||
+ pos->sec_levels != sl->sec_levels)
+ continue;
+
+ return container_of(pos, struct mac802154_llsec_seclevel,
+ level);
+ }
+
+ return NULL;
+}
+
+int mac802154_llsec_seclevel_add(struct mac802154_llsec *sec,
+ const struct ieee802154_llsec_seclevel *sl)
+{
+ struct mac802154_llsec_seclevel *entry;
+
+ if (llsec_find_seclevel(sec, sl))
+ return -EEXIST;
+
+ entry = kmalloc(sizeof(*entry), GFP_KERNEL);
+ if (!entry)
+ return -ENOMEM;
+
+ entry->level = *sl;
+
+ list_add_tail_rcu(&entry->level.list, &sec->table.security_levels);
+
+ return 0;
+}
+
+int mac802154_llsec_seclevel_del(struct mac802154_llsec *sec,
+ const struct ieee802154_llsec_seclevel *sl)
+{
+ struct mac802154_llsec_seclevel *pos;
+
+ pos = llsec_find_seclevel(sec, sl);
+ if (!pos)
+ return -ENOENT;
+
+ list_del_rcu(&pos->level.list);
+ kfree_rcu(pos, rcu);
+
+ return 0;
+}
+
+static int llsec_recover_addr(struct mac802154_llsec *sec,
+ struct ieee802154_addr *addr)
+{
+ __le16 caddr = sec->params.coord_shortaddr;
+
+ addr->pan_id = sec->params.pan_id;
+
+ if (caddr == cpu_to_le16(IEEE802154_ADDR_BROADCAST)) {
+ return -EINVAL;
+ } else if (caddr == cpu_to_le16(IEEE802154_ADDR_UNDEF)) {
+ addr->extended_addr = sec->params.coord_hwaddr;
+ addr->mode = IEEE802154_ADDR_LONG;
+ } else {
+ addr->short_addr = sec->params.coord_shortaddr;
+ addr->mode = IEEE802154_ADDR_SHORT;
+ }
+
+ return 0;
+}
+
+static struct mac802154_llsec_key*
+llsec_lookup_key(struct mac802154_llsec *sec,
+ const struct ieee802154_hdr *hdr,
+ const struct ieee802154_addr *addr,
+ struct ieee802154_llsec_key_id *key_id)
+{
+ struct ieee802154_addr devaddr = *addr;
+ u8 key_id_mode = hdr->sec.key_id_mode;
+ struct ieee802154_llsec_key_entry *key_entry;
+ struct mac802154_llsec_key *key;
+
+ if (key_id_mode == IEEE802154_SCF_KEY_IMPLICIT &&
+ devaddr.mode == IEEE802154_ADDR_NONE) {
+ if (hdr->fc.type == IEEE802154_FC_TYPE_BEACON) {
+ devaddr.extended_addr = sec->params.coord_hwaddr;
+ devaddr.mode = IEEE802154_ADDR_LONG;
+ } else if (llsec_recover_addr(sec, &devaddr) < 0) {
+ return NULL;
+ }
+ }
+
+ list_for_each_entry_rcu(key_entry, &sec->table.keys, list) {
+ const struct ieee802154_llsec_key_id *id = &key_entry->id;
+
+ if (!(key_entry->key->frame_types & BIT(hdr->fc.type)))
+ continue;
+
+ if (id->mode != key_id_mode)
+ continue;
+
+ if (key_id_mode == IEEE802154_SCF_KEY_IMPLICIT) {
+ if (ieee802154_addr_equal(&devaddr, &id->device_addr))
+ goto found;
+ } else {
+ if (id->id != hdr->sec.key_id)
+ continue;
+
+ if ((key_id_mode == IEEE802154_SCF_KEY_INDEX) ||
+ (key_id_mode == IEEE802154_SCF_KEY_SHORT_INDEX &&
+ id->short_source == hdr->sec.short_src) ||
+ (key_id_mode == IEEE802154_SCF_KEY_HW_INDEX &&
+ id->extended_source == hdr->sec.extended_src))
+ goto found;
+ }
+ }
+
+ return NULL;
+
+found:
+ key = container_of(key_entry->key, struct mac802154_llsec_key, key);
+ if (key_id)
+ *key_id = key_entry->id;
+ return llsec_key_get(key);
+}
+
+static void llsec_geniv(u8 iv[16], __le64 addr,
+ const struct ieee802154_sechdr *sec)
+{
+ __be64 addr_bytes = (__force __be64) swab64((__force u64) addr);
+ __be32 frame_counter = (__force __be32) swab32((__force u32) sec->frame_counter);
+
+ iv[0] = 1; /* L' = L - 1 = 1 */
+ memcpy(iv + 1, &addr_bytes, sizeof(addr_bytes));
+ memcpy(iv + 9, &frame_counter, sizeof(frame_counter));
+ iv[13] = sec->level;
+ iv[14] = 0;
+ iv[15] = 1;
+}
+
+static int
+llsec_do_encrypt_unauth(struct sk_buff *skb, const struct mac802154_llsec *sec,
+ const struct ieee802154_hdr *hdr,
+ struct mac802154_llsec_key *key)
+{
+ u8 iv[16];
+ struct scatterlist src;
+ SYNC_SKCIPHER_REQUEST_ON_STACK(req, key->tfm0);
+ int err, datalen;
+ unsigned char *data;
+
+ llsec_geniv(iv, sec->params.hwaddr, &hdr->sec);
+ /* Compute data payload offset and data length */
+ data = skb_mac_header(skb) + skb->mac_len;
+ datalen = skb_tail_pointer(skb) - data;
+ sg_init_one(&src, data, datalen);
+
+ skcipher_request_set_sync_tfm(req, key->tfm0);
+ skcipher_request_set_callback(req, 0, NULL, NULL);
+ skcipher_request_set_crypt(req, &src, &src, datalen, iv);
+ err = crypto_skcipher_encrypt(req);
+ skcipher_request_zero(req);
+ return err;
+}
+
+static struct crypto_aead*
+llsec_tfm_by_len(struct mac802154_llsec_key *key, int authlen)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(key->tfm); i++)
+ if (crypto_aead_authsize(key->tfm[i]) == authlen)
+ return key->tfm[i];
+
+ BUG();
+}
+
+static int
+llsec_do_encrypt_auth(struct sk_buff *skb, const struct mac802154_llsec *sec,
+ const struct ieee802154_hdr *hdr,
+ struct mac802154_llsec_key *key)
+{
+ u8 iv[16];
+ unsigned char *data;
+ int authlen, assoclen, datalen, rc;
+ struct scatterlist sg;
+ struct aead_request *req;
+
+ authlen = ieee802154_sechdr_authtag_len(&hdr->sec);
+ llsec_geniv(iv, sec->params.hwaddr, &hdr->sec);
+
+ req = aead_request_alloc(llsec_tfm_by_len(key, authlen), GFP_ATOMIC);
+ if (!req)
+ return -ENOMEM;
+
+ assoclen = skb->mac_len;
+
+ data = skb_mac_header(skb) + skb->mac_len;
+ datalen = skb_tail_pointer(skb) - data;
+
+ skb_put(skb, authlen);
+
+ sg_init_one(&sg, skb_mac_header(skb), assoclen + datalen + authlen);
+
+ if (!(hdr->sec.level & IEEE802154_SCF_SECLEVEL_ENC)) {
+ assoclen += datalen;
+ datalen = 0;
+ }
+
+ aead_request_set_callback(req, 0, NULL, NULL);
+ aead_request_set_crypt(req, &sg, &sg, datalen, iv);
+ aead_request_set_ad(req, assoclen);
+
+ rc = crypto_aead_encrypt(req);
+
+ kfree_sensitive(req);
+
+ return rc;
+}
+
+static int llsec_do_encrypt(struct sk_buff *skb,
+ const struct mac802154_llsec *sec,
+ const struct ieee802154_hdr *hdr,
+ struct mac802154_llsec_key *key)
+{
+ if (hdr->sec.level == IEEE802154_SCF_SECLEVEL_ENC)
+ return llsec_do_encrypt_unauth(skb, sec, hdr, key);
+ else
+ return llsec_do_encrypt_auth(skb, sec, hdr, key);
+}
+
+int mac802154_llsec_encrypt(struct mac802154_llsec *sec, struct sk_buff *skb)
+{
+ struct ieee802154_hdr hdr;
+ int rc, authlen, hlen;
+ struct mac802154_llsec_key *key;
+ u32 frame_ctr;
+
+ hlen = ieee802154_hdr_pull(skb, &hdr);
+
+ /* TODO: control frames security support */
+ if (hlen < 0 ||
+ (hdr.fc.type != IEEE802154_FC_TYPE_DATA &&
+ hdr.fc.type != IEEE802154_FC_TYPE_BEACON))
+ return -EINVAL;
+
+ if (!hdr.fc.security_enabled ||
+ (hdr.sec.level == IEEE802154_SCF_SECLEVEL_NONE)) {
+ skb_push(skb, hlen);
+ return 0;
+ }
+
+ authlen = ieee802154_sechdr_authtag_len(&hdr.sec);
+
+ if (skb->len + hlen + authlen + IEEE802154_MFR_SIZE > IEEE802154_MTU)
+ return -EMSGSIZE;
+
+ rcu_read_lock();
+
+ read_lock_bh(&sec->lock);
+
+ if (!sec->params.enabled) {
+ rc = -EINVAL;
+ goto fail_read;
+ }
+
+ key = llsec_lookup_key(sec, &hdr, &hdr.dest, NULL);
+ if (!key) {
+ rc = -ENOKEY;
+ goto fail_read;
+ }
+
+ read_unlock_bh(&sec->lock);
+
+ write_lock_bh(&sec->lock);
+
+ frame_ctr = be32_to_cpu(sec->params.frame_counter);
+ hdr.sec.frame_counter = cpu_to_le32(frame_ctr);
+ if (frame_ctr == 0xFFFFFFFF) {
+ write_unlock_bh(&sec->lock);
+ llsec_key_put(key);
+ rc = -EOVERFLOW;
+ goto fail;
+ }
+
+ sec->params.frame_counter = cpu_to_be32(frame_ctr + 1);
+
+ write_unlock_bh(&sec->lock);
+
+ rcu_read_unlock();
+
+ skb->mac_len = ieee802154_hdr_push(skb, &hdr);
+ skb_reset_mac_header(skb);
+
+ rc = llsec_do_encrypt(skb, sec, &hdr, key);
+ llsec_key_put(key);
+
+ return rc;
+
+fail_read:
+ read_unlock_bh(&sec->lock);
+fail:
+ rcu_read_unlock();
+ return rc;
+}
+
+static struct mac802154_llsec_device*
+llsec_lookup_dev(struct mac802154_llsec *sec,
+ const struct ieee802154_addr *addr)
+{
+ struct ieee802154_addr devaddr = *addr;
+ struct mac802154_llsec_device *dev = NULL;
+
+ if (devaddr.mode == IEEE802154_ADDR_NONE &&
+ llsec_recover_addr(sec, &devaddr) < 0)
+ return NULL;
+
+ if (devaddr.mode == IEEE802154_ADDR_SHORT) {
+ u32 key = llsec_dev_hash_short(devaddr.short_addr,
+ devaddr.pan_id);
+
+ hash_for_each_possible_rcu(sec->devices_short, dev,
+ bucket_s, key) {
+ if (dev->dev.pan_id == devaddr.pan_id &&
+ dev->dev.short_addr == devaddr.short_addr)
+ return dev;
+ }
+ } else {
+ u64 key = llsec_dev_hash_long(devaddr.extended_addr);
+
+ hash_for_each_possible_rcu(sec->devices_hw, dev,
+ bucket_hw, key) {
+ if (dev->dev.hwaddr == devaddr.extended_addr)
+ return dev;
+ }
+ }
+
+ return NULL;
+}
+
+static int
+llsec_lookup_seclevel(const struct mac802154_llsec *sec,
+ u8 frame_type, u8 cmd_frame_id,
+ struct ieee802154_llsec_seclevel *rlevel)
+{
+ struct ieee802154_llsec_seclevel *level;
+
+ list_for_each_entry_rcu(level, &sec->table.security_levels, list) {
+ if (level->frame_type == frame_type &&
+ (frame_type != IEEE802154_FC_TYPE_MAC_CMD ||
+ level->cmd_frame_id == cmd_frame_id)) {
+ *rlevel = *level;
+ return 0;
+ }
+ }
+
+ return -EINVAL;
+}
+
+static int
+llsec_do_decrypt_unauth(struct sk_buff *skb, const struct mac802154_llsec *sec,
+ const struct ieee802154_hdr *hdr,
+ struct mac802154_llsec_key *key, __le64 dev_addr)
+{
+ u8 iv[16];
+ unsigned char *data;
+ int datalen;
+ struct scatterlist src;
+ SYNC_SKCIPHER_REQUEST_ON_STACK(req, key->tfm0);
+ int err;
+
+ llsec_geniv(iv, dev_addr, &hdr->sec);
+ data = skb_mac_header(skb) + skb->mac_len;
+ datalen = skb_tail_pointer(skb) - data;
+
+ sg_init_one(&src, data, datalen);
+
+ skcipher_request_set_sync_tfm(req, key->tfm0);
+ skcipher_request_set_callback(req, 0, NULL, NULL);
+ skcipher_request_set_crypt(req, &src, &src, datalen, iv);
+
+ err = crypto_skcipher_decrypt(req);
+ skcipher_request_zero(req);
+ return err;
+}
+
+static int
+llsec_do_decrypt_auth(struct sk_buff *skb, const struct mac802154_llsec *sec,
+ const struct ieee802154_hdr *hdr,
+ struct mac802154_llsec_key *key, __le64 dev_addr)
+{
+ u8 iv[16];
+ unsigned char *data;
+ int authlen, datalen, assoclen, rc;
+ struct scatterlist sg;
+ struct aead_request *req;
+
+ authlen = ieee802154_sechdr_authtag_len(&hdr->sec);
+ llsec_geniv(iv, dev_addr, &hdr->sec);
+
+ req = aead_request_alloc(llsec_tfm_by_len(key, authlen), GFP_ATOMIC);
+ if (!req)
+ return -ENOMEM;
+
+ assoclen = skb->mac_len;
+
+ data = skb_mac_header(skb) + skb->mac_len;
+ datalen = skb_tail_pointer(skb) - data;
+
+ sg_init_one(&sg, skb_mac_header(skb), assoclen + datalen);
+
+ if (!(hdr->sec.level & IEEE802154_SCF_SECLEVEL_ENC)) {
+ assoclen += datalen - authlen;
+ datalen = authlen;
+ }
+
+ aead_request_set_callback(req, 0, NULL, NULL);
+ aead_request_set_crypt(req, &sg, &sg, datalen, iv);
+ aead_request_set_ad(req, assoclen);
+
+ rc = crypto_aead_decrypt(req);
+
+ kfree_sensitive(req);
+ skb_trim(skb, skb->len - authlen);
+
+ return rc;
+}
+
+static int
+llsec_do_decrypt(struct sk_buff *skb, const struct mac802154_llsec *sec,
+ const struct ieee802154_hdr *hdr,
+ struct mac802154_llsec_key *key, __le64 dev_addr)
+{
+ if (hdr->sec.level == IEEE802154_SCF_SECLEVEL_ENC)
+ return llsec_do_decrypt_unauth(skb, sec, hdr, key, dev_addr);
+ else
+ return llsec_do_decrypt_auth(skb, sec, hdr, key, dev_addr);
+}
+
+static int
+llsec_update_devkey_record(struct mac802154_llsec_device *dev,
+ const struct ieee802154_llsec_key_id *in_key)
+{
+ struct mac802154_llsec_device_key *devkey;
+
+ devkey = llsec_devkey_find(dev, in_key);
+
+ if (!devkey) {
+ struct mac802154_llsec_device_key *next;
+
+ next = kzalloc(sizeof(*devkey), GFP_ATOMIC);
+ if (!next)
+ return -ENOMEM;
+
+ next->devkey.key_id = *in_key;
+
+ spin_lock_bh(&dev->lock);
+
+ devkey = llsec_devkey_find(dev, in_key);
+ if (!devkey)
+ list_add_rcu(&next->devkey.list, &dev->dev.keys);
+ else
+ kfree_sensitive(next);
+
+ spin_unlock_bh(&dev->lock);
+ }
+
+ return 0;
+}
+
+static int
+llsec_update_devkey_info(struct mac802154_llsec_device *dev,
+ const struct ieee802154_llsec_key_id *in_key,
+ u32 frame_counter)
+{
+ struct mac802154_llsec_device_key *devkey = NULL;
+
+ if (dev->dev.key_mode == IEEE802154_LLSEC_DEVKEY_RESTRICT) {
+ devkey = llsec_devkey_find(dev, in_key);
+ if (!devkey)
+ return -ENOENT;
+ }
+
+ if (dev->dev.key_mode == IEEE802154_LLSEC_DEVKEY_RECORD) {
+ int rc = llsec_update_devkey_record(dev, in_key);
+
+ if (rc < 0)
+ return rc;
+ }
+
+ spin_lock_bh(&dev->lock);
+
+ if ((!devkey && frame_counter < dev->dev.frame_counter) ||
+ (devkey && frame_counter < devkey->devkey.frame_counter)) {
+ spin_unlock_bh(&dev->lock);
+ return -EINVAL;
+ }
+
+ if (devkey)
+ devkey->devkey.frame_counter = frame_counter + 1;
+ else
+ dev->dev.frame_counter = frame_counter + 1;
+
+ spin_unlock_bh(&dev->lock);
+
+ return 0;
+}
+
+int mac802154_llsec_decrypt(struct mac802154_llsec *sec, struct sk_buff *skb)
+{
+ struct ieee802154_hdr hdr;
+ struct mac802154_llsec_key *key;
+ struct ieee802154_llsec_key_id key_id;
+ struct mac802154_llsec_device *dev;
+ struct ieee802154_llsec_seclevel seclevel;
+ int err;
+ __le64 dev_addr;
+ u32 frame_ctr;
+
+ if (ieee802154_hdr_peek(skb, &hdr) < 0)
+ return -EINVAL;
+ if (!hdr.fc.security_enabled)
+ return 0;
+ if (hdr.fc.version == 0)
+ return -EINVAL;
+
+ read_lock_bh(&sec->lock);
+ if (!sec->params.enabled) {
+ read_unlock_bh(&sec->lock);
+ return -EINVAL;
+ }
+ read_unlock_bh(&sec->lock);
+
+ rcu_read_lock();
+
+ key = llsec_lookup_key(sec, &hdr, &hdr.source, &key_id);
+ if (!key) {
+ err = -ENOKEY;
+ goto fail;
+ }
+
+ dev = llsec_lookup_dev(sec, &hdr.source);
+ if (!dev) {
+ err = -EINVAL;
+ goto fail_dev;
+ }
+
+ if (llsec_lookup_seclevel(sec, hdr.fc.type, 0, &seclevel) < 0) {
+ err = -EINVAL;
+ goto fail_dev;
+ }
+
+ if (!(seclevel.sec_levels & BIT(hdr.sec.level)) &&
+ (hdr.sec.level == 0 && seclevel.device_override &&
+ !dev->dev.seclevel_exempt)) {
+ err = -EINVAL;
+ goto fail_dev;
+ }
+
+ frame_ctr = le32_to_cpu(hdr.sec.frame_counter);
+
+ if (frame_ctr == 0xffffffff) {
+ err = -EOVERFLOW;
+ goto fail_dev;
+ }
+
+ err = llsec_update_devkey_info(dev, &key_id, frame_ctr);
+ if (err)
+ goto fail_dev;
+
+ dev_addr = dev->dev.hwaddr;
+
+ rcu_read_unlock();
+
+ err = llsec_do_decrypt(skb, sec, &hdr, key, dev_addr);
+ llsec_key_put(key);
+ return err;
+
+fail_dev:
+ llsec_key_put(key);
+fail:
+ rcu_read_unlock();
+ return err;
+}
diff --git a/net/mac802154/llsec.h b/net/mac802154/llsec.h
new file mode 100644
index 0000000000..ddeb792282
--- /dev/null
+++ b/net/mac802154/llsec.h
@@ -0,0 +1,99 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (C) 2014 Fraunhofer ITWM
+ *
+ * Written by:
+ * Phoebe Buckheister <phoebe.buckheister@itwm.fraunhofer.de>
+ */
+
+#ifndef MAC802154_LLSEC_H
+#define MAC802154_LLSEC_H
+
+#include <linux/slab.h>
+#include <linux/hashtable.h>
+#include <linux/kref.h>
+#include <linux/spinlock.h>
+#include <net/af_ieee802154.h>
+#include <net/ieee802154_netdev.h>
+
+struct mac802154_llsec_key {
+ struct ieee802154_llsec_key key;
+
+ /* one tfm for each authsize (4/8/16) */
+ struct crypto_aead *tfm[3];
+ struct crypto_sync_skcipher *tfm0;
+
+ struct kref ref;
+};
+
+struct mac802154_llsec_device_key {
+ struct ieee802154_llsec_device_key devkey;
+
+ struct rcu_head rcu;
+};
+
+struct mac802154_llsec_device {
+ struct ieee802154_llsec_device dev;
+
+ struct hlist_node bucket_s;
+ struct hlist_node bucket_hw;
+
+ /* protects dev.frame_counter and the elements of dev.keys */
+ spinlock_t lock;
+
+ struct rcu_head rcu;
+};
+
+struct mac802154_llsec_seclevel {
+ struct ieee802154_llsec_seclevel level;
+
+ struct rcu_head rcu;
+};
+
+struct mac802154_llsec {
+ struct ieee802154_llsec_params params;
+ struct ieee802154_llsec_table table;
+
+ DECLARE_HASHTABLE(devices_short, 6);
+ DECLARE_HASHTABLE(devices_hw, 6);
+
+ /* protects params, all other fields are fine with RCU */
+ rwlock_t lock;
+};
+
+void mac802154_llsec_init(struct mac802154_llsec *sec);
+void mac802154_llsec_destroy(struct mac802154_llsec *sec);
+
+int mac802154_llsec_get_params(struct mac802154_llsec *sec,
+ struct ieee802154_llsec_params *params);
+int mac802154_llsec_set_params(struct mac802154_llsec *sec,
+ const struct ieee802154_llsec_params *params,
+ int changed);
+
+int mac802154_llsec_key_add(struct mac802154_llsec *sec,
+ const struct ieee802154_llsec_key_id *id,
+ const struct ieee802154_llsec_key *key);
+int mac802154_llsec_key_del(struct mac802154_llsec *sec,
+ const struct ieee802154_llsec_key_id *key);
+
+int mac802154_llsec_dev_add(struct mac802154_llsec *sec,
+ const struct ieee802154_llsec_device *dev);
+int mac802154_llsec_dev_del(struct mac802154_llsec *sec,
+ __le64 device_addr);
+
+int mac802154_llsec_devkey_add(struct mac802154_llsec *sec,
+ __le64 dev_addr,
+ const struct ieee802154_llsec_device_key *key);
+int mac802154_llsec_devkey_del(struct mac802154_llsec *sec,
+ __le64 dev_addr,
+ const struct ieee802154_llsec_device_key *key);
+
+int mac802154_llsec_seclevel_add(struct mac802154_llsec *sec,
+ const struct ieee802154_llsec_seclevel *sl);
+int mac802154_llsec_seclevel_del(struct mac802154_llsec *sec,
+ const struct ieee802154_llsec_seclevel *sl);
+
+int mac802154_llsec_encrypt(struct mac802154_llsec *sec, struct sk_buff *skb);
+int mac802154_llsec_decrypt(struct mac802154_llsec *sec, struct sk_buff *skb);
+
+#endif /* MAC802154_LLSEC_H */
diff --git a/net/mac802154/mac_cmd.c b/net/mac802154/mac_cmd.c
new file mode 100644
index 0000000000..8ea5b6402f
--- /dev/null
+++ b/net/mac802154/mac_cmd.c
@@ -0,0 +1,144 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * MAC commands interface
+ *
+ * Copyright 2007-2012 Siemens AG
+ *
+ * Written by:
+ * Sergey Lapin <slapin@ossfans.org>
+ * Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
+ * Alexander Smirnov <alex.bluesman.smirnov@gmail.com>
+ */
+
+#include <linux/skbuff.h>
+#include <linux/if_arp.h>
+#include <linux/ieee802154.h>
+
+#include <net/ieee802154_netdev.h>
+#include <net/cfg802154.h>
+#include <net/mac802154.h>
+
+#include "ieee802154_i.h"
+#include "driver-ops.h"
+
+static int mac802154_mlme_start_req(struct net_device *dev,
+ struct ieee802154_addr *addr,
+ u8 channel, u8 page,
+ u8 bcn_ord, u8 sf_ord,
+ u8 pan_coord, u8 blx,
+ u8 coord_realign)
+{
+ struct ieee802154_llsec_params params;
+ int changed = 0;
+
+ ASSERT_RTNL();
+
+ BUG_ON(addr->mode != IEEE802154_ADDR_SHORT);
+
+ dev->ieee802154_ptr->pan_id = addr->pan_id;
+ dev->ieee802154_ptr->short_addr = addr->short_addr;
+ mac802154_dev_set_page_channel(dev, page, channel);
+
+ params.pan_id = addr->pan_id;
+ changed |= IEEE802154_LLSEC_PARAM_PAN_ID;
+
+ params.hwaddr = ieee802154_devaddr_from_raw(dev->dev_addr);
+ changed |= IEEE802154_LLSEC_PARAM_HWADDR;
+
+ params.coord_hwaddr = params.hwaddr;
+ changed |= IEEE802154_LLSEC_PARAM_COORD_HWADDR;
+
+ params.coord_shortaddr = addr->short_addr;
+ changed |= IEEE802154_LLSEC_PARAM_COORD_SHORTADDR;
+
+ return mac802154_set_params(dev, &params, changed);
+}
+
+static int mac802154_set_mac_params(struct net_device *dev,
+ const struct ieee802154_mac_params *params)
+{
+ struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
+ struct ieee802154_local *local = sdata->local;
+ struct wpan_dev *wpan_dev = &sdata->wpan_dev;
+ int ret;
+
+ ASSERT_RTNL();
+
+ /* PHY */
+ wpan_dev->wpan_phy->transmit_power = params->transmit_power;
+ wpan_dev->wpan_phy->cca = params->cca;
+ wpan_dev->wpan_phy->cca_ed_level = params->cca_ed_level;
+
+ /* MAC */
+ wpan_dev->min_be = params->min_be;
+ wpan_dev->max_be = params->max_be;
+ wpan_dev->csma_retries = params->csma_retries;
+ wpan_dev->frame_retries = params->frame_retries;
+ wpan_dev->lbt = params->lbt;
+
+ if (local->hw.phy->flags & WPAN_PHY_FLAG_TXPOWER) {
+ ret = drv_set_tx_power(local, params->transmit_power);
+ if (ret < 0)
+ return ret;
+ }
+
+ if (local->hw.phy->flags & WPAN_PHY_FLAG_CCA_MODE) {
+ ret = drv_set_cca_mode(local, &params->cca);
+ if (ret < 0)
+ return ret;
+ }
+
+ if (local->hw.phy->flags & WPAN_PHY_FLAG_CCA_ED_LEVEL) {
+ ret = drv_set_cca_ed_level(local, params->cca_ed_level);
+ if (ret < 0)
+ return ret;
+ }
+
+ return 0;
+}
+
+static void mac802154_get_mac_params(struct net_device *dev,
+ struct ieee802154_mac_params *params)
+{
+ struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
+ struct wpan_dev *wpan_dev = &sdata->wpan_dev;
+
+ ASSERT_RTNL();
+
+ /* PHY */
+ params->transmit_power = wpan_dev->wpan_phy->transmit_power;
+ params->cca = wpan_dev->wpan_phy->cca;
+ params->cca_ed_level = wpan_dev->wpan_phy->cca_ed_level;
+
+ /* MAC */
+ params->min_be = wpan_dev->min_be;
+ params->max_be = wpan_dev->max_be;
+ params->csma_retries = wpan_dev->csma_retries;
+ params->frame_retries = wpan_dev->frame_retries;
+ params->lbt = wpan_dev->lbt;
+}
+
+static const struct ieee802154_llsec_ops mac802154_llsec_ops = {
+ .get_params = mac802154_get_params,
+ .set_params = mac802154_set_params,
+ .add_key = mac802154_add_key,
+ .del_key = mac802154_del_key,
+ .add_dev = mac802154_add_dev,
+ .del_dev = mac802154_del_dev,
+ .add_devkey = mac802154_add_devkey,
+ .del_devkey = mac802154_del_devkey,
+ .add_seclevel = mac802154_add_seclevel,
+ .del_seclevel = mac802154_del_seclevel,
+ .lock_table = mac802154_lock_table,
+ .get_table = mac802154_get_table,
+ .unlock_table = mac802154_unlock_table,
+};
+
+struct ieee802154_mlme_ops mac802154_mlme_wpan = {
+ .start_req = mac802154_mlme_start_req,
+
+ .llsec = &mac802154_llsec_ops,
+
+ .set_mac_params = mac802154_set_mac_params,
+ .get_mac_params = mac802154_get_mac_params,
+};
diff --git a/net/mac802154/main.c b/net/mac802154/main.c
new file mode 100644
index 0000000000..357ece6743
--- /dev/null
+++ b/net/mac802154/main.c
@@ -0,0 +1,304 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2007-2012 Siemens AG
+ *
+ * Written by:
+ * Alexander Smirnov <alex.bluesman.smirnov@gmail.com>
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/netdevice.h>
+
+#include <net/netlink.h>
+#include <net/nl802154.h>
+#include <net/mac802154.h>
+#include <net/ieee802154_netdev.h>
+#include <net/route.h>
+#include <net/cfg802154.h>
+
+#include "ieee802154_i.h"
+#include "cfg.h"
+
+static void ieee802154_tasklet_handler(struct tasklet_struct *t)
+{
+ struct ieee802154_local *local = from_tasklet(local, t, tasklet);
+ struct sk_buff *skb;
+
+ while ((skb = skb_dequeue(&local->skb_queue))) {
+ switch (skb->pkt_type) {
+ case IEEE802154_RX_MSG:
+ /* Clear skb->pkt_type in order to not confuse kernel
+ * netstack.
+ */
+ skb->pkt_type = 0;
+ ieee802154_rx(local, skb);
+ break;
+ default:
+ WARN(1, "mac802154: Packet is of unknown type %d\n",
+ skb->pkt_type);
+ kfree_skb(skb);
+ break;
+ }
+ }
+}
+
+struct ieee802154_hw *
+ieee802154_alloc_hw(size_t priv_data_len, const struct ieee802154_ops *ops)
+{
+ struct wpan_phy *phy;
+ struct ieee802154_local *local;
+ size_t priv_size;
+
+ if (WARN_ON(!ops || !(ops->xmit_async || ops->xmit_sync) || !ops->ed ||
+ !ops->start || !ops->stop || !ops->set_channel))
+ return NULL;
+
+ /* Ensure 32-byte alignment of our private data and hw private data.
+ * We use the wpan_phy priv data for both our ieee802154_local and for
+ * the driver's private data
+ *
+ * in memory it'll be like this:
+ *
+ * +-------------------------+
+ * | struct wpan_phy |
+ * +-------------------------+
+ * | struct ieee802154_local |
+ * +-------------------------+
+ * | driver's private data |
+ * +-------------------------+
+ *
+ * Due to ieee802154 layer isn't aware of driver and MAC structures,
+ * so lets align them here.
+ */
+
+ priv_size = ALIGN(sizeof(*local), NETDEV_ALIGN) + priv_data_len;
+
+ phy = wpan_phy_new(&mac802154_config_ops, priv_size);
+ if (!phy) {
+ pr_err("failure to allocate master IEEE802.15.4 device\n");
+ return NULL;
+ }
+
+ phy->privid = mac802154_wpan_phy_privid;
+
+ local = wpan_phy_priv(phy);
+ local->phy = phy;
+ local->hw.phy = local->phy;
+ local->hw.priv = (char *)local + ALIGN(sizeof(*local), NETDEV_ALIGN);
+ local->ops = ops;
+
+ INIT_LIST_HEAD(&local->interfaces);
+ INIT_LIST_HEAD(&local->rx_beacon_list);
+ INIT_LIST_HEAD(&local->rx_mac_cmd_list);
+ mutex_init(&local->iflist_mtx);
+
+ tasklet_setup(&local->tasklet, ieee802154_tasklet_handler);
+
+ skb_queue_head_init(&local->skb_queue);
+
+ INIT_WORK(&local->sync_tx_work, ieee802154_xmit_sync_worker);
+ INIT_DELAYED_WORK(&local->scan_work, mac802154_scan_worker);
+ INIT_WORK(&local->rx_beacon_work, mac802154_rx_beacon_worker);
+ INIT_DELAYED_WORK(&local->beacon_work, mac802154_beacon_worker);
+ INIT_WORK(&local->rx_mac_cmd_work, mac802154_rx_mac_cmd_worker);
+
+ /* init supported flags with 802.15.4 default ranges */
+ phy->supported.max_minbe = 8;
+ phy->supported.min_maxbe = 3;
+ phy->supported.max_maxbe = 8;
+ phy->supported.min_frame_retries = 0;
+ phy->supported.max_frame_retries = 7;
+ phy->supported.max_csma_backoffs = 5;
+ phy->supported.lbt = NL802154_SUPPORTED_BOOL_FALSE;
+
+ /* always supported */
+ phy->supported.iftypes = BIT(NL802154_IFTYPE_NODE) | BIT(NL802154_IFTYPE_COORD);
+
+ return &local->hw;
+}
+EXPORT_SYMBOL(ieee802154_alloc_hw);
+
+void ieee802154_configure_durations(struct wpan_phy *phy,
+ unsigned int page, unsigned int channel)
+{
+ u32 duration = 0;
+
+ switch (page) {
+ case 0:
+ if (BIT(channel) & 0x1)
+ /* 868 MHz BPSK 802.15.4-2003: 20 ksym/s */
+ duration = 50 * NSEC_PER_USEC;
+ else if (BIT(channel) & 0x7FE)
+ /* 915 MHz BPSK 802.15.4-2003: 40 ksym/s */
+ duration = 25 * NSEC_PER_USEC;
+ else if (BIT(channel) & 0x7FFF800)
+ /* 2400 MHz O-QPSK 802.15.4-2006: 62.5 ksym/s */
+ duration = 16 * NSEC_PER_USEC;
+ break;
+ case 2:
+ if (BIT(channel) & 0x1)
+ /* 868 MHz O-QPSK 802.15.4-2006: 25 ksym/s */
+ duration = 40 * NSEC_PER_USEC;
+ else if (BIT(channel) & 0x7FE)
+ /* 915 MHz O-QPSK 802.15.4-2006: 62.5 ksym/s */
+ duration = 16 * NSEC_PER_USEC;
+ break;
+ case 3:
+ if (BIT(channel) & 0x3FFF)
+ /* 2.4 GHz CSS 802.15.4a-2007: 1/6 Msym/s */
+ duration = 6 * NSEC_PER_USEC;
+ break;
+ default:
+ break;
+ }
+
+ if (!duration) {
+ pr_debug("Unknown PHY symbol duration\n");
+ return;
+ }
+
+ phy->symbol_duration = duration;
+ phy->lifs_period = (IEEE802154_LIFS_PERIOD * phy->symbol_duration) / NSEC_PER_SEC;
+ phy->sifs_period = (IEEE802154_SIFS_PERIOD * phy->symbol_duration) / NSEC_PER_SEC;
+}
+EXPORT_SYMBOL(ieee802154_configure_durations);
+
+void ieee802154_free_hw(struct ieee802154_hw *hw)
+{
+ struct ieee802154_local *local = hw_to_local(hw);
+
+ BUG_ON(!list_empty(&local->interfaces));
+
+ mutex_destroy(&local->iflist_mtx);
+
+ wpan_phy_free(local->phy);
+}
+EXPORT_SYMBOL(ieee802154_free_hw);
+
+static void ieee802154_setup_wpan_phy_pib(struct wpan_phy *wpan_phy)
+{
+ /* TODO warn on empty symbol_duration
+ * Should be done when all drivers sets this value.
+ */
+
+ wpan_phy->lifs_period =
+ (IEEE802154_LIFS_PERIOD * wpan_phy->symbol_duration) / 1000;
+ wpan_phy->sifs_period =
+ (IEEE802154_SIFS_PERIOD * wpan_phy->symbol_duration) / 1000;
+}
+
+int ieee802154_register_hw(struct ieee802154_hw *hw)
+{
+ struct ieee802154_local *local = hw_to_local(hw);
+ char mac_wq_name[IFNAMSIZ + 10] = {};
+ struct net_device *dev;
+ int rc = -ENOSYS;
+
+ local->workqueue =
+ create_singlethread_workqueue(wpan_phy_name(local->phy));
+ if (!local->workqueue) {
+ rc = -ENOMEM;
+ goto out;
+ }
+
+ snprintf(mac_wq_name, IFNAMSIZ + 10, "%s-mac-cmds", wpan_phy_name(local->phy));
+ local->mac_wq = create_singlethread_workqueue(mac_wq_name);
+ if (!local->mac_wq) {
+ rc = -ENOMEM;
+ goto out_wq;
+ }
+
+ hrtimer_init(&local->ifs_timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
+ local->ifs_timer.function = ieee802154_xmit_ifs_timer;
+
+ wpan_phy_set_dev(local->phy, local->hw.parent);
+
+ ieee802154_setup_wpan_phy_pib(local->phy);
+
+ ieee802154_configure_durations(local->phy, local->phy->current_page,
+ local->phy->current_channel);
+
+ if (!(hw->flags & IEEE802154_HW_CSMA_PARAMS)) {
+ local->phy->supported.min_csma_backoffs = 4;
+ local->phy->supported.max_csma_backoffs = 4;
+ local->phy->supported.min_maxbe = 5;
+ local->phy->supported.max_maxbe = 5;
+ local->phy->supported.min_minbe = 3;
+ local->phy->supported.max_minbe = 3;
+ }
+
+ if (!(hw->flags & IEEE802154_HW_FRAME_RETRIES)) {
+ local->phy->supported.min_frame_retries = 3;
+ local->phy->supported.max_frame_retries = 3;
+ }
+
+ if (hw->flags & IEEE802154_HW_PROMISCUOUS)
+ local->phy->supported.iftypes |= BIT(NL802154_IFTYPE_MONITOR);
+
+ rc = wpan_phy_register(local->phy);
+ if (rc < 0)
+ goto out_mac_wq;
+
+ rtnl_lock();
+
+ dev = ieee802154_if_add(local, "wpan%d", NET_NAME_ENUM,
+ NL802154_IFTYPE_NODE,
+ cpu_to_le64(0x0000000000000000ULL));
+ if (IS_ERR(dev)) {
+ rtnl_unlock();
+ rc = PTR_ERR(dev);
+ goto out_phy;
+ }
+
+ rtnl_unlock();
+
+ return 0;
+
+out_phy:
+ wpan_phy_unregister(local->phy);
+out_mac_wq:
+ destroy_workqueue(local->mac_wq);
+out_wq:
+ destroy_workqueue(local->workqueue);
+out:
+ return rc;
+}
+EXPORT_SYMBOL(ieee802154_register_hw);
+
+void ieee802154_unregister_hw(struct ieee802154_hw *hw)
+{
+ struct ieee802154_local *local = hw_to_local(hw);
+
+ tasklet_kill(&local->tasklet);
+ flush_workqueue(local->workqueue);
+
+ rtnl_lock();
+
+ ieee802154_remove_interfaces(local);
+
+ rtnl_unlock();
+
+ destroy_workqueue(local->mac_wq);
+ destroy_workqueue(local->workqueue);
+ wpan_phy_unregister(local->phy);
+}
+EXPORT_SYMBOL(ieee802154_unregister_hw);
+
+static int __init ieee802154_init(void)
+{
+ return ieee802154_iface_init();
+}
+
+static void __exit ieee802154_exit(void)
+{
+ ieee802154_iface_exit();
+
+ rcu_barrier();
+}
+
+subsys_initcall(ieee802154_init);
+module_exit(ieee802154_exit);
+
+MODULE_DESCRIPTION("IEEE 802.15.4 subsystem");
+MODULE_LICENSE("GPL v2");
diff --git a/net/mac802154/mib.c b/net/mac802154/mib.c
new file mode 100644
index 0000000000..81666e1d77
--- /dev/null
+++ b/net/mac802154/mib.c
@@ -0,0 +1,219 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright 2007-2012 Siemens AG
+ *
+ * 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/if_arp.h>
+
+#include <net/mac802154.h>
+#include <net/ieee802154_netdev.h>
+#include <net/cfg802154.h>
+
+#include "ieee802154_i.h"
+#include "driver-ops.h"
+
+void mac802154_dev_set_page_channel(struct net_device *dev, u8 page, u8 chan)
+{
+ struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
+ struct ieee802154_local *local = sdata->local;
+ int res;
+
+ ASSERT_RTNL();
+
+ BUG_ON(dev->type != ARPHRD_IEEE802154);
+
+ res = drv_set_channel(local, page, chan);
+ if (res) {
+ pr_debug("set_channel failed\n");
+ } else {
+ local->phy->current_channel = chan;
+ local->phy->current_page = page;
+ }
+}
+
+int mac802154_get_params(struct net_device *dev,
+ struct ieee802154_llsec_params *params)
+{
+ struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
+ int res;
+
+ BUG_ON(dev->type != ARPHRD_IEEE802154);
+
+ mutex_lock(&sdata->sec_mtx);
+ res = mac802154_llsec_get_params(&sdata->sec, params);
+ mutex_unlock(&sdata->sec_mtx);
+
+ return res;
+}
+
+int mac802154_set_params(struct net_device *dev,
+ const struct ieee802154_llsec_params *params,
+ int changed)
+{
+ struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
+ int res;
+
+ BUG_ON(dev->type != ARPHRD_IEEE802154);
+
+ mutex_lock(&sdata->sec_mtx);
+ res = mac802154_llsec_set_params(&sdata->sec, params, changed);
+ mutex_unlock(&sdata->sec_mtx);
+
+ return res;
+}
+
+int mac802154_add_key(struct net_device *dev,
+ const struct ieee802154_llsec_key_id *id,
+ const struct ieee802154_llsec_key *key)
+{
+ struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
+ int res;
+
+ BUG_ON(dev->type != ARPHRD_IEEE802154);
+
+ mutex_lock(&sdata->sec_mtx);
+ res = mac802154_llsec_key_add(&sdata->sec, id, key);
+ mutex_unlock(&sdata->sec_mtx);
+
+ return res;
+}
+
+int mac802154_del_key(struct net_device *dev,
+ const struct ieee802154_llsec_key_id *id)
+{
+ struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
+ int res;
+
+ BUG_ON(dev->type != ARPHRD_IEEE802154);
+
+ mutex_lock(&sdata->sec_mtx);
+ res = mac802154_llsec_key_del(&sdata->sec, id);
+ mutex_unlock(&sdata->sec_mtx);
+
+ return res;
+}
+
+int mac802154_add_dev(struct net_device *dev,
+ const struct ieee802154_llsec_device *llsec_dev)
+{
+ struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
+ int res;
+
+ BUG_ON(dev->type != ARPHRD_IEEE802154);
+
+ mutex_lock(&sdata->sec_mtx);
+ res = mac802154_llsec_dev_add(&sdata->sec, llsec_dev);
+ mutex_unlock(&sdata->sec_mtx);
+
+ return res;
+}
+
+int mac802154_del_dev(struct net_device *dev, __le64 dev_addr)
+{
+ struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
+ int res;
+
+ BUG_ON(dev->type != ARPHRD_IEEE802154);
+
+ mutex_lock(&sdata->sec_mtx);
+ res = mac802154_llsec_dev_del(&sdata->sec, dev_addr);
+ mutex_unlock(&sdata->sec_mtx);
+
+ return res;
+}
+
+int mac802154_add_devkey(struct net_device *dev,
+ __le64 device_addr,
+ const struct ieee802154_llsec_device_key *key)
+{
+ struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
+ int res;
+
+ BUG_ON(dev->type != ARPHRD_IEEE802154);
+
+ mutex_lock(&sdata->sec_mtx);
+ res = mac802154_llsec_devkey_add(&sdata->sec, device_addr, key);
+ mutex_unlock(&sdata->sec_mtx);
+
+ return res;
+}
+
+int mac802154_del_devkey(struct net_device *dev,
+ __le64 device_addr,
+ const struct ieee802154_llsec_device_key *key)
+{
+ struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
+ int res;
+
+ BUG_ON(dev->type != ARPHRD_IEEE802154);
+
+ mutex_lock(&sdata->sec_mtx);
+ res = mac802154_llsec_devkey_del(&sdata->sec, device_addr, key);
+ mutex_unlock(&sdata->sec_mtx);
+
+ return res;
+}
+
+int mac802154_add_seclevel(struct net_device *dev,
+ const struct ieee802154_llsec_seclevel *sl)
+{
+ struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
+ int res;
+
+ BUG_ON(dev->type != ARPHRD_IEEE802154);
+
+ mutex_lock(&sdata->sec_mtx);
+ res = mac802154_llsec_seclevel_add(&sdata->sec, sl);
+ mutex_unlock(&sdata->sec_mtx);
+
+ return res;
+}
+
+int mac802154_del_seclevel(struct net_device *dev,
+ const struct ieee802154_llsec_seclevel *sl)
+{
+ struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
+ int res;
+
+ BUG_ON(dev->type != ARPHRD_IEEE802154);
+
+ mutex_lock(&sdata->sec_mtx);
+ res = mac802154_llsec_seclevel_del(&sdata->sec, sl);
+ mutex_unlock(&sdata->sec_mtx);
+
+ return res;
+}
+
+void mac802154_lock_table(struct net_device *dev)
+{
+ struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
+
+ BUG_ON(dev->type != ARPHRD_IEEE802154);
+
+ mutex_lock(&sdata->sec_mtx);
+}
+
+void mac802154_get_table(struct net_device *dev,
+ struct ieee802154_llsec_table **t)
+{
+ struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
+
+ BUG_ON(dev->type != ARPHRD_IEEE802154);
+
+ *t = &sdata->sec.table;
+}
+
+void mac802154_unlock_table(struct net_device *dev)
+{
+ struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
+
+ BUG_ON(dev->type != ARPHRD_IEEE802154);
+
+ mutex_unlock(&sdata->sec_mtx);
+}
diff --git a/net/mac802154/rx.c b/net/mac802154/rx.c
new file mode 100644
index 0000000000..e2434b4fe5
--- /dev/null
+++ b/net/mac802154/rx.c
@@ -0,0 +1,422 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2007-2012 Siemens AG
+ *
+ * Written by:
+ * Pavel Smolenskiy <pavel.smolenskiy@gmail.com>
+ * Maxim Gorbachyov <maxim.gorbachev@siemens.com>
+ * Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
+ * Alexander Smirnov <alex.bluesman.smirnov@gmail.com>
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/netdevice.h>
+#include <linux/crc-ccitt.h>
+#include <asm/unaligned.h>
+
+#include <net/mac802154.h>
+#include <net/ieee802154_netdev.h>
+#include <net/nl802154.h>
+
+#include "ieee802154_i.h"
+
+static int ieee802154_deliver_skb(struct sk_buff *skb)
+{
+ skb->ip_summed = CHECKSUM_UNNECESSARY;
+ skb->protocol = htons(ETH_P_IEEE802154);
+
+ return netif_receive_skb(skb);
+}
+
+void mac802154_rx_beacon_worker(struct work_struct *work)
+{
+ struct ieee802154_local *local =
+ container_of(work, struct ieee802154_local, rx_beacon_work);
+ struct cfg802154_mac_pkt *mac_pkt;
+
+ mac_pkt = list_first_entry_or_null(&local->rx_beacon_list,
+ struct cfg802154_mac_pkt, node);
+ if (!mac_pkt)
+ return;
+
+ mac802154_process_beacon(local, mac_pkt->skb, mac_pkt->page, mac_pkt->channel);
+
+ list_del(&mac_pkt->node);
+ kfree_skb(mac_pkt->skb);
+ kfree(mac_pkt);
+}
+
+static bool mac802154_should_answer_beacon_req(struct ieee802154_local *local)
+{
+ struct cfg802154_beacon_request *beacon_req;
+ unsigned int interval;
+
+ rcu_read_lock();
+ beacon_req = rcu_dereference(local->beacon_req);
+ if (!beacon_req) {
+ rcu_read_unlock();
+ return false;
+ }
+
+ interval = beacon_req->interval;
+ rcu_read_unlock();
+
+ if (!mac802154_is_beaconing(local))
+ return false;
+
+ return interval == IEEE802154_ACTIVE_SCAN_DURATION;
+}
+
+void mac802154_rx_mac_cmd_worker(struct work_struct *work)
+{
+ struct ieee802154_local *local =
+ container_of(work, struct ieee802154_local, rx_mac_cmd_work);
+ struct cfg802154_mac_pkt *mac_pkt;
+ u8 mac_cmd;
+ int rc;
+
+ mac_pkt = list_first_entry_or_null(&local->rx_mac_cmd_list,
+ struct cfg802154_mac_pkt, node);
+ if (!mac_pkt)
+ return;
+
+ rc = ieee802154_get_mac_cmd(mac_pkt->skb, &mac_cmd);
+ if (rc)
+ goto out;
+
+ switch (mac_cmd) {
+ case IEEE802154_CMD_BEACON_REQ:
+ dev_dbg(&mac_pkt->sdata->dev->dev, "processing BEACON REQ\n");
+ if (!mac802154_should_answer_beacon_req(local))
+ break;
+
+ queue_delayed_work(local->mac_wq, &local->beacon_work, 0);
+ break;
+ default:
+ break;
+ }
+
+out:
+ list_del(&mac_pkt->node);
+ kfree_skb(mac_pkt->skb);
+ kfree(mac_pkt);
+}
+
+static int
+ieee802154_subif_frame(struct ieee802154_sub_if_data *sdata,
+ struct sk_buff *skb, const struct ieee802154_hdr *hdr)
+{
+ struct wpan_phy *wpan_phy = sdata->local->hw.phy;
+ struct wpan_dev *wpan_dev = &sdata->wpan_dev;
+ struct cfg802154_mac_pkt *mac_pkt;
+ __le16 span, sshort;
+ int rc;
+
+ pr_debug("getting packet via slave interface %s\n", sdata->dev->name);
+
+ span = wpan_dev->pan_id;
+ sshort = wpan_dev->short_addr;
+
+ /* Level 3 filtering: Only beacons are accepted during scans */
+ if (sdata->required_filtering == IEEE802154_FILTERING_3_SCAN &&
+ sdata->required_filtering > wpan_phy->filtering) {
+ if (mac_cb(skb)->type != IEEE802154_FC_TYPE_BEACON) {
+ dev_dbg(&sdata->dev->dev,
+ "drop non-beacon frame (0x%x) during scan\n",
+ mac_cb(skb)->type);
+ goto fail;
+ }
+ }
+
+ switch (mac_cb(skb)->dest.mode) {
+ case IEEE802154_ADDR_NONE:
+ if (hdr->source.mode != 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)->dest.pan_id != span &&
+ mac_cb(skb)->dest.pan_id != cpu_to_le16(IEEE802154_PANID_BROADCAST))
+ skb->pkt_type = PACKET_OTHERHOST;
+ else if (mac_cb(skb)->dest.extended_addr == wpan_dev->extended_addr)
+ skb->pkt_type = PACKET_HOST;
+ else
+ skb->pkt_type = PACKET_OTHERHOST;
+ break;
+ case IEEE802154_ADDR_SHORT:
+ if (mac_cb(skb)->dest.pan_id != span &&
+ mac_cb(skb)->dest.pan_id != cpu_to_le16(IEEE802154_PANID_BROADCAST))
+ skb->pkt_type = PACKET_OTHERHOST;
+ else if (mac_cb(skb)->dest.short_addr == sshort)
+ skb->pkt_type = PACKET_HOST;
+ else if (mac_cb(skb)->dest.short_addr ==
+ cpu_to_le16(IEEE802154_ADDR_BROADCAST))
+ skb->pkt_type = PACKET_BROADCAST;
+ else
+ skb->pkt_type = PACKET_OTHERHOST;
+ break;
+ default:
+ pr_debug("invalid dest mode\n");
+ goto fail;
+ }
+
+ skb->dev = sdata->dev;
+
+ /* TODO this should be moved after netif_receive_skb call, otherwise
+ * wireshark will show a mac header with security fields and the
+ * payload is already decrypted.
+ */
+ rc = mac802154_llsec_decrypt(&sdata->sec, skb);
+ if (rc) {
+ pr_debug("decryption failed: %i\n", rc);
+ goto fail;
+ }
+
+ sdata->dev->stats.rx_packets++;
+ sdata->dev->stats.rx_bytes += skb->len;
+
+ switch (mac_cb(skb)->type) {
+ case IEEE802154_FC_TYPE_BEACON:
+ dev_dbg(&sdata->dev->dev, "BEACON received\n");
+ if (!mac802154_is_scanning(sdata->local))
+ goto fail;
+
+ mac_pkt = kzalloc(sizeof(*mac_pkt), GFP_ATOMIC);
+ if (!mac_pkt)
+ goto fail;
+
+ mac_pkt->skb = skb_get(skb);
+ mac_pkt->sdata = sdata;
+ mac_pkt->page = sdata->local->scan_page;
+ mac_pkt->channel = sdata->local->scan_channel;
+ list_add_tail(&mac_pkt->node, &sdata->local->rx_beacon_list);
+ queue_work(sdata->local->mac_wq, &sdata->local->rx_beacon_work);
+ return NET_RX_SUCCESS;
+
+ case IEEE802154_FC_TYPE_MAC_CMD:
+ dev_dbg(&sdata->dev->dev, "MAC COMMAND received\n");
+ mac_pkt = kzalloc(sizeof(*mac_pkt), GFP_ATOMIC);
+ if (!mac_pkt)
+ goto fail;
+
+ mac_pkt->skb = skb_get(skb);
+ mac_pkt->sdata = sdata;
+ list_add_tail(&mac_pkt->node, &sdata->local->rx_mac_cmd_list);
+ queue_work(sdata->local->mac_wq, &sdata->local->rx_mac_cmd_work);
+ return NET_RX_SUCCESS;
+
+ case IEEE802154_FC_TYPE_ACK:
+ goto fail;
+
+ case IEEE802154_FC_TYPE_DATA:
+ return ieee802154_deliver_skb(skb);
+ default:
+ pr_warn_ratelimited("ieee802154: bad frame received "
+ "(type = %d)\n", mac_cb(skb)->type);
+ goto fail;
+ }
+
+fail:
+ kfree_skb(skb);
+ return NET_RX_DROP;
+}
+
+static void
+ieee802154_print_addr(const char *name, const struct ieee802154_addr *addr)
+{
+ if (addr->mode == IEEE802154_ADDR_NONE) {
+ pr_debug("%s not present\n", name);
+ return;
+ }
+
+ pr_debug("%s PAN ID: %04x\n", name, le16_to_cpu(addr->pan_id));
+ if (addr->mode == IEEE802154_ADDR_SHORT) {
+ pr_debug("%s is short: %04x\n", name,
+ le16_to_cpu(addr->short_addr));
+ } else {
+ u64 hw = swab64((__force u64)addr->extended_addr);
+
+ pr_debug("%s is hardware: %8phC\n", name, &hw);
+ }
+}
+
+static int
+ieee802154_parse_frame_start(struct sk_buff *skb, struct ieee802154_hdr *hdr)
+{
+ int hlen;
+ struct ieee802154_mac_cb *cb = mac_cb(skb);
+
+ skb_reset_mac_header(skb);
+
+ hlen = ieee802154_hdr_pull(skb, hdr);
+ if (hlen < 0)
+ return -EINVAL;
+
+ skb->mac_len = hlen;
+
+ pr_debug("fc: %04x dsn: %02x\n", le16_to_cpup((__le16 *)&hdr->fc),
+ hdr->seq);
+
+ cb->type = hdr->fc.type;
+ cb->ackreq = hdr->fc.ack_request;
+ cb->secen = hdr->fc.security_enabled;
+
+ ieee802154_print_addr("destination", &hdr->dest);
+ ieee802154_print_addr("source", &hdr->source);
+
+ cb->source = hdr->source;
+ cb->dest = hdr->dest;
+
+ if (hdr->fc.security_enabled) {
+ u64 key;
+
+ pr_debug("seclevel %i\n", hdr->sec.level);
+
+ switch (hdr->sec.key_id_mode) {
+ case IEEE802154_SCF_KEY_IMPLICIT:
+ pr_debug("implicit key\n");
+ break;
+
+ case IEEE802154_SCF_KEY_INDEX:
+ pr_debug("key %02x\n", hdr->sec.key_id);
+ break;
+
+ case IEEE802154_SCF_KEY_SHORT_INDEX:
+ pr_debug("key %04x:%04x %02x\n",
+ le32_to_cpu(hdr->sec.short_src) >> 16,
+ le32_to_cpu(hdr->sec.short_src) & 0xffff,
+ hdr->sec.key_id);
+ break;
+
+ case IEEE802154_SCF_KEY_HW_INDEX:
+ key = swab64((__force u64)hdr->sec.extended_src);
+ pr_debug("key source %8phC %02x\n", &key,
+ hdr->sec.key_id);
+ break;
+ }
+ }
+
+ return 0;
+}
+
+static void
+__ieee802154_rx_handle_packet(struct ieee802154_local *local,
+ struct sk_buff *skb)
+{
+ int ret;
+ struct ieee802154_sub_if_data *sdata;
+ struct ieee802154_hdr hdr;
+ struct sk_buff *skb2;
+
+ ret = ieee802154_parse_frame_start(skb, &hdr);
+ if (ret) {
+ pr_debug("got invalid frame\n");
+ return;
+ }
+
+ list_for_each_entry_rcu(sdata, &local->interfaces, list) {
+ if (sdata->wpan_dev.iftype == NL802154_IFTYPE_MONITOR)
+ continue;
+
+ if (!ieee802154_sdata_running(sdata))
+ continue;
+
+ /* Do not deliver packets received on interfaces expecting
+ * AACK=1 if the address filters where disabled.
+ */
+ if (local->hw.phy->filtering < IEEE802154_FILTERING_4_FRAME_FIELDS &&
+ sdata->required_filtering == IEEE802154_FILTERING_4_FRAME_FIELDS)
+ continue;
+
+ skb2 = skb_clone(skb, GFP_ATOMIC);
+ if (skb2) {
+ skb2->dev = sdata->dev;
+ ieee802154_subif_frame(sdata, skb2, &hdr);
+ }
+ }
+}
+
+static void
+ieee802154_monitors_rx(struct ieee802154_local *local, struct sk_buff *skb)
+{
+ struct sk_buff *skb2;
+ struct ieee802154_sub_if_data *sdata;
+
+ skb_reset_mac_header(skb);
+ skb->ip_summed = CHECKSUM_UNNECESSARY;
+ skb->pkt_type = PACKET_OTHERHOST;
+ skb->protocol = htons(ETH_P_IEEE802154);
+
+ list_for_each_entry_rcu(sdata, &local->interfaces, list) {
+ if (sdata->wpan_dev.iftype != NL802154_IFTYPE_MONITOR)
+ continue;
+
+ if (!ieee802154_sdata_running(sdata))
+ continue;
+
+ skb2 = skb_clone(skb, GFP_ATOMIC);
+ if (skb2) {
+ skb2->dev = sdata->dev;
+ ieee802154_deliver_skb(skb2);
+
+ sdata->dev->stats.rx_packets++;
+ sdata->dev->stats.rx_bytes += skb->len;
+ }
+ }
+}
+
+void ieee802154_rx(struct ieee802154_local *local, struct sk_buff *skb)
+{
+ u16 crc;
+
+ WARN_ON_ONCE(softirq_count() == 0);
+
+ if (local->suspended)
+ goto free_skb;
+
+ /* TODO: When a transceiver omits the checksum here, we
+ * add an own calculated one. This is currently an ugly
+ * solution because the monitor needs a crc here.
+ */
+ if (local->hw.flags & IEEE802154_HW_RX_OMIT_CKSUM) {
+ crc = crc_ccitt(0, skb->data, skb->len);
+ put_unaligned_le16(crc, skb_put(skb, 2));
+ }
+
+ rcu_read_lock();
+
+ ieee802154_monitors_rx(local, skb);
+
+ /* Level 1 filtering: Check the FCS by software when relevant */
+ if (local->hw.phy->filtering == IEEE802154_FILTERING_NONE) {
+ crc = crc_ccitt(0, skb->data, skb->len);
+ if (crc)
+ goto drop;
+ }
+ /* remove crc */
+ skb_trim(skb, skb->len - 2);
+
+ __ieee802154_rx_handle_packet(local, skb);
+
+drop:
+ rcu_read_unlock();
+free_skb:
+ kfree_skb(skb);
+}
+
+void
+ieee802154_rx_irqsafe(struct ieee802154_hw *hw, struct sk_buff *skb, u8 lqi)
+{
+ struct ieee802154_local *local = hw_to_local(hw);
+ struct ieee802154_mac_cb *cb = mac_cb_init(skb);
+
+ cb->lqi = lqi;
+ skb->pkt_type = IEEE802154_RX_MSG;
+ skb_queue_tail(&local->skb_queue, skb);
+ tasklet_schedule(&local->tasklet);
+}
+EXPORT_SYMBOL(ieee802154_rx_irqsafe);
diff --git a/net/mac802154/scan.c b/net/mac802154/scan.c
new file mode 100644
index 0000000000..d9658f2c4a
--- /dev/null
+++ b/net/mac802154/scan.c
@@ -0,0 +1,512 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * IEEE 802.15.4 scanning management
+ *
+ * Copyright (C) 2021 Qorvo US, Inc
+ * Authors:
+ * - David Girault <david.girault@qorvo.com>
+ * - Miquel Raynal <miquel.raynal@bootlin.com>
+ */
+
+#include <linux/module.h>
+#include <linux/rtnetlink.h>
+#include <net/mac802154.h>
+
+#include "ieee802154_i.h"
+#include "driver-ops.h"
+#include "../ieee802154/nl802154.h"
+
+#define IEEE802154_BEACON_MHR_SZ 13
+#define IEEE802154_BEACON_PL_SZ 4
+#define IEEE802154_MAC_CMD_MHR_SZ 23
+#define IEEE802154_MAC_CMD_PL_SZ 1
+#define IEEE802154_BEACON_SKB_SZ (IEEE802154_BEACON_MHR_SZ + \
+ IEEE802154_BEACON_PL_SZ)
+#define IEEE802154_MAC_CMD_SKB_SZ (IEEE802154_MAC_CMD_MHR_SZ + \
+ IEEE802154_MAC_CMD_PL_SZ)
+
+/* mac802154_scan_cleanup_locked() must be called upon scan completion or abort.
+ * - Completions are asynchronous, not locked by the rtnl and decided by the
+ * scan worker.
+ * - Aborts are decided by userspace, and locked by the rtnl.
+ *
+ * Concurrent modifications to the PHY, the interfaces or the hardware is in
+ * general prevented by the rtnl. So in most cases we don't need additional
+ * protection.
+ *
+ * However, the scan worker get's triggered without anybody noticing and thus we
+ * must ensure the presence of the devices as well as data consistency:
+ * - The sub-interface and device driver module get both their reference
+ * counters incremented whenever we start a scan, so they cannot disappear
+ * during operation.
+ * - Data consistency is achieved by the use of rcu protected pointers.
+ */
+static int mac802154_scan_cleanup_locked(struct ieee802154_local *local,
+ struct ieee802154_sub_if_data *sdata,
+ bool aborted)
+{
+ struct wpan_dev *wpan_dev = &sdata->wpan_dev;
+ struct wpan_phy *wpan_phy = local->phy;
+ struct cfg802154_scan_request *request;
+ u8 arg;
+
+ /* Prevent any further use of the scan request */
+ clear_bit(IEEE802154_IS_SCANNING, &local->ongoing);
+ cancel_delayed_work(&local->scan_work);
+ request = rcu_replace_pointer(local->scan_req, NULL, 1);
+ if (!request)
+ return 0;
+ kvfree_rcu_mightsleep(request);
+
+ /* Advertize first, while we know the devices cannot be removed */
+ if (aborted)
+ arg = NL802154_SCAN_DONE_REASON_ABORTED;
+ else
+ arg = NL802154_SCAN_DONE_REASON_FINISHED;
+ nl802154_scan_done(wpan_phy, wpan_dev, arg);
+
+ /* Cleanup software stack */
+ ieee802154_mlme_op_post(local);
+
+ /* Set the hardware back in its original state */
+ drv_set_channel(local, wpan_phy->current_page,
+ wpan_phy->current_channel);
+ ieee802154_configure_durations(wpan_phy, wpan_phy->current_page,
+ wpan_phy->current_channel);
+ drv_stop(local);
+ synchronize_net();
+ sdata->required_filtering = sdata->iface_default_filtering;
+ drv_start(local, sdata->required_filtering, &local->addr_filt);
+
+ return 0;
+}
+
+int mac802154_abort_scan_locked(struct ieee802154_local *local,
+ struct ieee802154_sub_if_data *sdata)
+{
+ ASSERT_RTNL();
+
+ if (!mac802154_is_scanning(local))
+ return -ESRCH;
+
+ return mac802154_scan_cleanup_locked(local, sdata, true);
+}
+
+static unsigned int mac802154_scan_get_channel_time(u8 duration_order,
+ u8 symbol_duration)
+{
+ u64 base_super_frame_duration = (u64)symbol_duration *
+ IEEE802154_SUPERFRAME_PERIOD * IEEE802154_SLOT_PERIOD;
+
+ return usecs_to_jiffies(base_super_frame_duration *
+ (BIT(duration_order) + 1));
+}
+
+static void mac802154_flush_queued_beacons(struct ieee802154_local *local)
+{
+ struct cfg802154_mac_pkt *mac_pkt, *tmp;
+
+ list_for_each_entry_safe(mac_pkt, tmp, &local->rx_beacon_list, node) {
+ list_del(&mac_pkt->node);
+ kfree_skb(mac_pkt->skb);
+ kfree(mac_pkt);
+ }
+}
+
+static void
+mac802154_scan_get_next_channel(struct ieee802154_local *local,
+ struct cfg802154_scan_request *scan_req,
+ u8 *channel)
+{
+ (*channel)++;
+ *channel = find_next_bit((const unsigned long *)&scan_req->channels,
+ IEEE802154_MAX_CHANNEL + 1,
+ *channel);
+}
+
+static int mac802154_scan_find_next_chan(struct ieee802154_local *local,
+ struct cfg802154_scan_request *scan_req,
+ u8 page, u8 *channel)
+{
+ mac802154_scan_get_next_channel(local, scan_req, channel);
+ if (*channel > IEEE802154_MAX_CHANNEL)
+ return -EINVAL;
+
+ return 0;
+}
+
+static int mac802154_scan_prepare_beacon_req(struct ieee802154_local *local)
+{
+ memset(&local->scan_beacon_req, 0, sizeof(local->scan_beacon_req));
+ local->scan_beacon_req.mhr.fc.type = IEEE802154_FC_TYPE_MAC_CMD;
+ local->scan_beacon_req.mhr.fc.dest_addr_mode = IEEE802154_SHORT_ADDRESSING;
+ local->scan_beacon_req.mhr.fc.version = IEEE802154_2003_STD;
+ local->scan_beacon_req.mhr.fc.source_addr_mode = IEEE802154_NO_ADDRESSING;
+ local->scan_beacon_req.mhr.dest.mode = IEEE802154_ADDR_SHORT;
+ local->scan_beacon_req.mhr.dest.pan_id = cpu_to_le16(IEEE802154_PANID_BROADCAST);
+ local->scan_beacon_req.mhr.dest.short_addr = cpu_to_le16(IEEE802154_ADDR_BROADCAST);
+ local->scan_beacon_req.mac_pl.cmd_id = IEEE802154_CMD_BEACON_REQ;
+
+ return 0;
+}
+
+static int mac802154_transmit_beacon_req(struct ieee802154_local *local,
+ struct ieee802154_sub_if_data *sdata)
+{
+ struct sk_buff *skb;
+ int ret;
+
+ skb = alloc_skb(IEEE802154_MAC_CMD_SKB_SZ, GFP_KERNEL);
+ if (!skb)
+ return -ENOBUFS;
+
+ skb->dev = sdata->dev;
+
+ ret = ieee802154_mac_cmd_push(skb, &local->scan_beacon_req, NULL, 0);
+ if (ret) {
+ kfree_skb(skb);
+ return ret;
+ }
+
+ return ieee802154_mlme_tx(local, sdata, skb);
+}
+
+void mac802154_scan_worker(struct work_struct *work)
+{
+ struct ieee802154_local *local =
+ container_of(work, struct ieee802154_local, scan_work.work);
+ struct cfg802154_scan_request *scan_req;
+ struct ieee802154_sub_if_data *sdata;
+ unsigned int scan_duration = 0;
+ struct wpan_phy *wpan_phy;
+ u8 scan_req_duration;
+ u8 page, channel;
+ int ret;
+
+ /* Ensure the device receiver is turned off when changing channels
+ * because there is no atomic way to change the channel and know on
+ * which one a beacon might have been received.
+ */
+ drv_stop(local);
+ synchronize_net();
+ mac802154_flush_queued_beacons(local);
+
+ rcu_read_lock();
+ scan_req = rcu_dereference(local->scan_req);
+ if (unlikely(!scan_req)) {
+ rcu_read_unlock();
+ return;
+ }
+
+ sdata = IEEE802154_WPAN_DEV_TO_SUB_IF(scan_req->wpan_dev);
+
+ /* Wait an arbitrary amount of time in case we cannot use the device */
+ if (local->suspended || !ieee802154_sdata_running(sdata)) {
+ rcu_read_unlock();
+ queue_delayed_work(local->mac_wq, &local->scan_work,
+ msecs_to_jiffies(1000));
+ return;
+ }
+
+ wpan_phy = scan_req->wpan_phy;
+ scan_req_duration = scan_req->duration;
+
+ /* Look for the next valid chan */
+ page = local->scan_page;
+ channel = local->scan_channel;
+ do {
+ ret = mac802154_scan_find_next_chan(local, scan_req, page, &channel);
+ if (ret) {
+ rcu_read_unlock();
+ goto end_scan;
+ }
+ } while (!ieee802154_chan_is_valid(scan_req->wpan_phy, page, channel));
+
+ rcu_read_unlock();
+
+ /* Bypass the stack on purpose when changing the channel */
+ rtnl_lock();
+ ret = drv_set_channel(local, page, channel);
+ rtnl_unlock();
+ if (ret) {
+ dev_err(&sdata->dev->dev,
+ "Channel change failure during scan, aborting (%d)\n", ret);
+ goto end_scan;
+ }
+
+ local->scan_page = page;
+ local->scan_channel = channel;
+
+ rtnl_lock();
+ ret = drv_start(local, IEEE802154_FILTERING_3_SCAN, &local->addr_filt);
+ rtnl_unlock();
+ if (ret) {
+ dev_err(&sdata->dev->dev,
+ "Restarting failure after channel change, aborting (%d)\n", ret);
+ goto end_scan;
+ }
+
+ if (scan_req->type == NL802154_SCAN_ACTIVE) {
+ ret = mac802154_transmit_beacon_req(local, sdata);
+ if (ret)
+ dev_err(&sdata->dev->dev,
+ "Error when transmitting beacon request (%d)\n", ret);
+ }
+
+ ieee802154_configure_durations(wpan_phy, page, channel);
+ scan_duration = mac802154_scan_get_channel_time(scan_req_duration,
+ wpan_phy->symbol_duration);
+ dev_dbg(&sdata->dev->dev,
+ "Scan page %u channel %u for %ums\n",
+ page, channel, jiffies_to_msecs(scan_duration));
+ queue_delayed_work(local->mac_wq, &local->scan_work, scan_duration);
+ return;
+
+end_scan:
+ rtnl_lock();
+ mac802154_scan_cleanup_locked(local, sdata, false);
+ rtnl_unlock();
+}
+
+int mac802154_trigger_scan_locked(struct ieee802154_sub_if_data *sdata,
+ struct cfg802154_scan_request *request)
+{
+ struct ieee802154_local *local = sdata->local;
+
+ ASSERT_RTNL();
+
+ if (mac802154_is_scanning(local))
+ return -EBUSY;
+
+ if (request->type != NL802154_SCAN_PASSIVE &&
+ request->type != NL802154_SCAN_ACTIVE)
+ return -EOPNOTSUPP;
+
+ /* Store scanning parameters */
+ rcu_assign_pointer(local->scan_req, request);
+
+ /* Software scanning requires to set promiscuous mode, so we need to
+ * pause the Tx queue during the entire operation.
+ */
+ ieee802154_mlme_op_pre(local);
+
+ sdata->required_filtering = IEEE802154_FILTERING_3_SCAN;
+ local->scan_page = request->page;
+ local->scan_channel = -1;
+ set_bit(IEEE802154_IS_SCANNING, &local->ongoing);
+ if (request->type == NL802154_SCAN_ACTIVE)
+ mac802154_scan_prepare_beacon_req(local);
+
+ nl802154_scan_started(request->wpan_phy, request->wpan_dev);
+
+ queue_delayed_work(local->mac_wq, &local->scan_work, 0);
+
+ return 0;
+}
+
+int mac802154_process_beacon(struct ieee802154_local *local,
+ struct sk_buff *skb,
+ u8 page, u8 channel)
+{
+ struct ieee802154_beacon_hdr *bh = (void *)skb->data;
+ struct ieee802154_addr *src = &mac_cb(skb)->source;
+ struct cfg802154_scan_request *scan_req;
+ struct ieee802154_coord_desc desc;
+
+ if (skb->len != sizeof(*bh))
+ return -EINVAL;
+
+ if (unlikely(src->mode == IEEE802154_ADDR_NONE))
+ return -EINVAL;
+
+ dev_dbg(&skb->dev->dev,
+ "BEACON received on page %u channel %u\n",
+ page, channel);
+
+ memcpy(&desc.addr, src, sizeof(desc.addr));
+ desc.page = page;
+ desc.channel = channel;
+ desc.link_quality = mac_cb(skb)->lqi;
+ desc.superframe_spec = get_unaligned_le16(skb->data);
+ desc.gts_permit = bh->gts_permit;
+
+ trace_802154_scan_event(&desc);
+
+ rcu_read_lock();
+ scan_req = rcu_dereference(local->scan_req);
+ if (likely(scan_req))
+ nl802154_scan_event(scan_req->wpan_phy, scan_req->wpan_dev, &desc);
+ rcu_read_unlock();
+
+ return 0;
+}
+
+static int mac802154_transmit_beacon(struct ieee802154_local *local,
+ struct wpan_dev *wpan_dev)
+{
+ struct cfg802154_beacon_request *beacon_req;
+ struct ieee802154_sub_if_data *sdata;
+ struct sk_buff *skb;
+ int ret;
+
+ /* Update the sequence number */
+ local->beacon.mhr.seq = atomic_inc_return(&wpan_dev->bsn) & 0xFF;
+
+ skb = alloc_skb(IEEE802154_BEACON_SKB_SZ, GFP_KERNEL);
+ if (!skb)
+ return -ENOBUFS;
+
+ rcu_read_lock();
+ beacon_req = rcu_dereference(local->beacon_req);
+ if (unlikely(!beacon_req)) {
+ rcu_read_unlock();
+ kfree_skb(skb);
+ return -EINVAL;
+ }
+
+ sdata = IEEE802154_WPAN_DEV_TO_SUB_IF(beacon_req->wpan_dev);
+ skb->dev = sdata->dev;
+
+ rcu_read_unlock();
+
+ ret = ieee802154_beacon_push(skb, &local->beacon);
+ if (ret) {
+ kfree_skb(skb);
+ return ret;
+ }
+
+ /* Using the MLME transmission helper for sending beacons is a bit
+ * overkill because we do not really care about the final outcome.
+ *
+ * Even though, going through the whole net stack with a regular
+ * dev_queue_xmit() is not relevant either because we want beacons to be
+ * sent "now" rather than go through the whole net stack scheduling
+ * (qdisc & co).
+ *
+ * Finally, using ieee802154_subif_start_xmit() would only be an option
+ * if we had a generic transmit helper which would acquire the
+ * HARD_TX_LOCK() to prevent buffer handling conflicts with regular
+ * packets.
+ *
+ * So for now we keep it simple and send beacons with our MLME helper,
+ * even if it stops the ieee802154 queue entirely during these
+ * transmissions, wich anyway does not have a huge impact on the
+ * performances given the current design of the stack.
+ */
+ return ieee802154_mlme_tx(local, sdata, skb);
+}
+
+void mac802154_beacon_worker(struct work_struct *work)
+{
+ struct ieee802154_local *local =
+ container_of(work, struct ieee802154_local, beacon_work.work);
+ struct cfg802154_beacon_request *beacon_req;
+ struct ieee802154_sub_if_data *sdata;
+ struct wpan_dev *wpan_dev;
+ u8 interval;
+ int ret;
+
+ rcu_read_lock();
+ beacon_req = rcu_dereference(local->beacon_req);
+ if (unlikely(!beacon_req)) {
+ rcu_read_unlock();
+ return;
+ }
+
+ sdata = IEEE802154_WPAN_DEV_TO_SUB_IF(beacon_req->wpan_dev);
+
+ /* Wait an arbitrary amount of time in case we cannot use the device */
+ if (local->suspended || !ieee802154_sdata_running(sdata)) {
+ rcu_read_unlock();
+ queue_delayed_work(local->mac_wq, &local->beacon_work,
+ msecs_to_jiffies(1000));
+ return;
+ }
+
+ wpan_dev = beacon_req->wpan_dev;
+ interval = beacon_req->interval;
+
+ rcu_read_unlock();
+
+ dev_dbg(&sdata->dev->dev, "Sending beacon\n");
+ ret = mac802154_transmit_beacon(local, wpan_dev);
+ if (ret)
+ dev_err(&sdata->dev->dev,
+ "Beacon could not be transmitted (%d)\n", ret);
+
+ if (interval < IEEE802154_ACTIVE_SCAN_DURATION)
+ queue_delayed_work(local->mac_wq, &local->beacon_work,
+ local->beacon_interval);
+}
+
+int mac802154_stop_beacons_locked(struct ieee802154_local *local,
+ struct ieee802154_sub_if_data *sdata)
+{
+ struct wpan_dev *wpan_dev = &sdata->wpan_dev;
+ struct cfg802154_beacon_request *request;
+
+ ASSERT_RTNL();
+
+ if (!mac802154_is_beaconing(local))
+ return -ESRCH;
+
+ clear_bit(IEEE802154_IS_BEACONING, &local->ongoing);
+ cancel_delayed_work(&local->beacon_work);
+ request = rcu_replace_pointer(local->beacon_req, NULL, 1);
+ if (!request)
+ return 0;
+ kvfree_rcu_mightsleep(request);
+
+ nl802154_beaconing_done(wpan_dev);
+
+ return 0;
+}
+
+int mac802154_send_beacons_locked(struct ieee802154_sub_if_data *sdata,
+ struct cfg802154_beacon_request *request)
+{
+ struct ieee802154_local *local = sdata->local;
+
+ ASSERT_RTNL();
+
+ if (mac802154_is_beaconing(local))
+ mac802154_stop_beacons_locked(local, sdata);
+
+ /* Store beaconing parameters */
+ rcu_assign_pointer(local->beacon_req, request);
+
+ set_bit(IEEE802154_IS_BEACONING, &local->ongoing);
+
+ memset(&local->beacon, 0, sizeof(local->beacon));
+ local->beacon.mhr.fc.type = IEEE802154_FC_TYPE_BEACON;
+ local->beacon.mhr.fc.security_enabled = 0;
+ local->beacon.mhr.fc.frame_pending = 0;
+ local->beacon.mhr.fc.ack_request = 0;
+ local->beacon.mhr.fc.intra_pan = 0;
+ local->beacon.mhr.fc.dest_addr_mode = IEEE802154_NO_ADDRESSING;
+ local->beacon.mhr.fc.version = IEEE802154_2003_STD;
+ local->beacon.mhr.fc.source_addr_mode = IEEE802154_EXTENDED_ADDRESSING;
+ atomic_set(&request->wpan_dev->bsn, -1);
+ local->beacon.mhr.source.mode = IEEE802154_ADDR_LONG;
+ local->beacon.mhr.source.pan_id = request->wpan_dev->pan_id;
+ local->beacon.mhr.source.extended_addr = request->wpan_dev->extended_addr;
+ local->beacon.mac_pl.beacon_order = request->interval;
+ if (request->interval <= IEEE802154_MAX_SCAN_DURATION)
+ local->beacon.mac_pl.superframe_order = request->interval;
+ local->beacon.mac_pl.final_cap_slot = 0xf;
+ local->beacon.mac_pl.battery_life_ext = 0;
+ /* TODO: Fill this field with the coordinator situation in the network */
+ local->beacon.mac_pl.pan_coordinator = 1;
+ local->beacon.mac_pl.assoc_permit = 1;
+
+ if (request->interval == IEEE802154_ACTIVE_SCAN_DURATION)
+ return 0;
+
+ /* Start the beacon work */
+ local->beacon_interval =
+ mac802154_scan_get_channel_time(request->interval,
+ request->wpan_phy->symbol_duration);
+ queue_delayed_work(local->mac_wq, &local->beacon_work, 0);
+
+ return 0;
+}
diff --git a/net/mac802154/trace.c b/net/mac802154/trace.c
new file mode 100644
index 0000000000..c36e3d541a
--- /dev/null
+++ b/net/mac802154/trace.c
@@ -0,0 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <linux/module.h>
+
+#ifndef __CHECKER__
+#include <net/cfg802154.h>
+#include "driver-ops.h"
+#define CREATE_TRACE_POINTS
+#include "trace.h"
+
+#endif
diff --git a/net/mac802154/trace.h b/net/mac802154/trace.h
new file mode 100644
index 0000000000..1574ecc480
--- /dev/null
+++ b/net/mac802154/trace.h
@@ -0,0 +1,298 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Based on net/mac80211/trace.h */
+
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM mac802154
+
+#if !defined(__MAC802154_DRIVER_TRACE) || defined(TRACE_HEADER_MULTI_READ)
+#define __MAC802154_DRIVER_TRACE
+
+#include <linux/tracepoint.h>
+
+#include <net/mac802154.h>
+#include "ieee802154_i.h"
+
+#define MAXNAME 32
+#define LOCAL_ENTRY __array(char, wpan_phy_name, MAXNAME)
+#define LOCAL_ASSIGN strscpy(__entry->wpan_phy_name, \
+ wpan_phy_name(local->hw.phy), MAXNAME)
+#define LOCAL_PR_FMT "%s"
+#define LOCAL_PR_ARG __entry->wpan_phy_name
+
+#define CCA_ENTRY __field(enum nl802154_cca_modes, cca_mode) \
+ __field(enum nl802154_cca_opts, cca_opt)
+#define CCA_ASSIGN \
+ do { \
+ (__entry->cca_mode) = cca->mode; \
+ (__entry->cca_opt) = cca->opt; \
+ } while (0)
+#define CCA_PR_FMT "cca_mode: %d, cca_opt: %d"
+#define CCA_PR_ARG __entry->cca_mode, __entry->cca_opt
+
+#define BOOL_TO_STR(bo) (bo) ? "true" : "false"
+
+/* Tracing for driver callbacks */
+
+DECLARE_EVENT_CLASS(local_only_evt4,
+ TP_PROTO(struct ieee802154_local *local),
+ TP_ARGS(local),
+ TP_STRUCT__entry(
+ LOCAL_ENTRY
+ ),
+ TP_fast_assign(
+ LOCAL_ASSIGN;
+ ),
+ TP_printk(LOCAL_PR_FMT, LOCAL_PR_ARG)
+);
+
+DEFINE_EVENT(local_only_evt4, 802154_drv_return_void,
+ TP_PROTO(struct ieee802154_local *local),
+ TP_ARGS(local)
+);
+
+TRACE_EVENT(802154_drv_return_int,
+ TP_PROTO(struct ieee802154_local *local, int ret),
+ TP_ARGS(local, ret),
+ TP_STRUCT__entry(
+ LOCAL_ENTRY
+ __field(int, ret)
+ ),
+ TP_fast_assign(
+ LOCAL_ASSIGN;
+ __entry->ret = ret;
+ ),
+ TP_printk(LOCAL_PR_FMT ", returned: %d", LOCAL_PR_ARG,
+ __entry->ret)
+);
+
+DEFINE_EVENT(local_only_evt4, 802154_drv_start,
+ TP_PROTO(struct ieee802154_local *local),
+ TP_ARGS(local)
+);
+
+DEFINE_EVENT(local_only_evt4, 802154_drv_stop,
+ TP_PROTO(struct ieee802154_local *local),
+ TP_ARGS(local)
+);
+
+TRACE_EVENT(802154_drv_set_channel,
+ TP_PROTO(struct ieee802154_local *local, u8 page, u8 channel),
+ TP_ARGS(local, page, channel),
+ TP_STRUCT__entry(
+ LOCAL_ENTRY
+ __field(u8, page)
+ __field(u8, channel)
+ ),
+ TP_fast_assign(
+ LOCAL_ASSIGN;
+ __entry->page = page;
+ __entry->channel = channel;
+ ),
+ TP_printk(LOCAL_PR_FMT ", page: %d, channel: %d", LOCAL_PR_ARG,
+ __entry->page, __entry->channel)
+);
+
+TRACE_EVENT(802154_drv_set_cca_mode,
+ TP_PROTO(struct ieee802154_local *local,
+ const struct wpan_phy_cca *cca),
+ TP_ARGS(local, cca),
+ TP_STRUCT__entry(
+ LOCAL_ENTRY
+ CCA_ENTRY
+ ),
+ TP_fast_assign(
+ LOCAL_ASSIGN;
+ CCA_ASSIGN;
+ ),
+ TP_printk(LOCAL_PR_FMT ", " CCA_PR_FMT, LOCAL_PR_ARG,
+ CCA_PR_ARG)
+);
+
+TRACE_EVENT(802154_drv_set_cca_ed_level,
+ TP_PROTO(struct ieee802154_local *local, s32 mbm),
+ TP_ARGS(local, mbm),
+ TP_STRUCT__entry(
+ LOCAL_ENTRY
+ __field(s32, mbm)
+ ),
+ TP_fast_assign(
+ LOCAL_ASSIGN;
+ __entry->mbm = mbm;
+ ),
+ TP_printk(LOCAL_PR_FMT ", ed level: %d", LOCAL_PR_ARG,
+ __entry->mbm)
+);
+
+TRACE_EVENT(802154_drv_set_tx_power,
+ TP_PROTO(struct ieee802154_local *local, s32 power),
+ TP_ARGS(local, power),
+ TP_STRUCT__entry(
+ LOCAL_ENTRY
+ __field(s32, power)
+ ),
+ TP_fast_assign(
+ LOCAL_ASSIGN;
+ __entry->power = power;
+ ),
+ TP_printk(LOCAL_PR_FMT ", mbm: %d", LOCAL_PR_ARG,
+ __entry->power)
+);
+
+TRACE_EVENT(802154_drv_set_lbt_mode,
+ TP_PROTO(struct ieee802154_local *local, bool mode),
+ TP_ARGS(local, mode),
+ TP_STRUCT__entry(
+ LOCAL_ENTRY
+ __field(bool, mode)
+ ),
+ TP_fast_assign(
+ LOCAL_ASSIGN;
+ __entry->mode = mode;
+ ),
+ TP_printk(LOCAL_PR_FMT ", lbt mode: %s", LOCAL_PR_ARG,
+ BOOL_TO_STR(__entry->mode))
+);
+
+TRACE_EVENT(802154_drv_set_short_addr,
+ TP_PROTO(struct ieee802154_local *local, __le16 short_addr),
+ TP_ARGS(local, short_addr),
+ TP_STRUCT__entry(
+ LOCAL_ENTRY
+ __field(__le16, short_addr)
+ ),
+ TP_fast_assign(
+ LOCAL_ASSIGN;
+ __entry->short_addr = short_addr;
+ ),
+ TP_printk(LOCAL_PR_FMT ", short addr: 0x%04x", LOCAL_PR_ARG,
+ le16_to_cpu(__entry->short_addr))
+);
+
+TRACE_EVENT(802154_drv_set_pan_id,
+ TP_PROTO(struct ieee802154_local *local, __le16 pan_id),
+ TP_ARGS(local, pan_id),
+ TP_STRUCT__entry(
+ LOCAL_ENTRY
+ __field(__le16, pan_id)
+ ),
+ TP_fast_assign(
+ LOCAL_ASSIGN;
+ __entry->pan_id = pan_id;
+ ),
+ TP_printk(LOCAL_PR_FMT ", pan id: 0x%04x", LOCAL_PR_ARG,
+ le16_to_cpu(__entry->pan_id))
+);
+
+TRACE_EVENT(802154_drv_set_extended_addr,
+ TP_PROTO(struct ieee802154_local *local, __le64 extended_addr),
+ TP_ARGS(local, extended_addr),
+ TP_STRUCT__entry(
+ LOCAL_ENTRY
+ __field(__le64, extended_addr)
+ ),
+ TP_fast_assign(
+ LOCAL_ASSIGN;
+ __entry->extended_addr = extended_addr;
+ ),
+ TP_printk(LOCAL_PR_FMT ", extended addr: 0x%llx", LOCAL_PR_ARG,
+ le64_to_cpu(__entry->extended_addr))
+);
+
+TRACE_EVENT(802154_drv_set_pan_coord,
+ TP_PROTO(struct ieee802154_local *local, bool is_coord),
+ TP_ARGS(local, is_coord),
+ TP_STRUCT__entry(
+ LOCAL_ENTRY
+ __field(bool, is_coord)
+ ),
+ TP_fast_assign(
+ LOCAL_ASSIGN;
+ __entry->is_coord = is_coord;
+ ),
+ TP_printk(LOCAL_PR_FMT ", is_coord: %s", LOCAL_PR_ARG,
+ BOOL_TO_STR(__entry->is_coord))
+);
+
+TRACE_EVENT(802154_drv_set_csma_params,
+ TP_PROTO(struct ieee802154_local *local, u8 min_be, u8 max_be,
+ u8 max_csma_backoffs),
+ TP_ARGS(local, min_be, max_be, max_csma_backoffs),
+ TP_STRUCT__entry(
+ LOCAL_ENTRY
+ __field(u8, min_be)
+ __field(u8, max_be)
+ __field(u8, max_csma_backoffs)
+ ),
+ TP_fast_assign(
+ LOCAL_ASSIGN,
+ __entry->min_be = min_be;
+ __entry->max_be = max_be;
+ __entry->max_csma_backoffs = max_csma_backoffs;
+ ),
+ TP_printk(LOCAL_PR_FMT ", min be: %d, max be: %d, max csma backoffs: %d",
+ LOCAL_PR_ARG, __entry->min_be, __entry->max_be,
+ __entry->max_csma_backoffs)
+);
+
+TRACE_EVENT(802154_drv_set_max_frame_retries,
+ TP_PROTO(struct ieee802154_local *local, s8 max_frame_retries),
+ TP_ARGS(local, max_frame_retries),
+ TP_STRUCT__entry(
+ LOCAL_ENTRY
+ __field(s8, max_frame_retries)
+ ),
+ TP_fast_assign(
+ LOCAL_ASSIGN;
+ __entry->max_frame_retries = max_frame_retries;
+ ),
+ TP_printk(LOCAL_PR_FMT ", max frame retries: %d", LOCAL_PR_ARG,
+ __entry->max_frame_retries)
+);
+
+TRACE_EVENT(802154_drv_set_promiscuous_mode,
+ TP_PROTO(struct ieee802154_local *local, bool on),
+ TP_ARGS(local, on),
+ TP_STRUCT__entry(
+ LOCAL_ENTRY
+ __field(bool, on)
+ ),
+ TP_fast_assign(
+ LOCAL_ASSIGN;
+ __entry->on = on;
+ ),
+ TP_printk(LOCAL_PR_FMT ", promiscuous mode: %s", LOCAL_PR_ARG,
+ BOOL_TO_STR(__entry->on))
+);
+
+TRACE_EVENT(802154_new_scan_event,
+ TP_PROTO(struct ieee802154_coord_desc *desc),
+ TP_ARGS(desc),
+ TP_STRUCT__entry(
+ __field(__le16, pan_id)
+ __field(__le64, addr)
+ __field(u8, channel)
+ __field(u8, page)
+ ),
+ TP_fast_assign(
+ __entry->page = desc->page;
+ __entry->channel = desc->channel;
+ __entry->pan_id = desc->addr.pan_id;
+ __entry->addr = desc->addr.extended_addr;
+ ),
+ TP_printk("panid: %u, coord_addr: 0x%llx, page: %u, channel: %u",
+ __le16_to_cpu(__entry->pan_id), __le64_to_cpu(__entry->addr),
+ __entry->page, __entry->channel)
+);
+
+DEFINE_EVENT(802154_new_scan_event, 802154_scan_event,
+ TP_PROTO(struct ieee802154_coord_desc *desc),
+ TP_ARGS(desc)
+);
+
+#endif /* !__MAC802154_DRIVER_TRACE || TRACE_HEADER_MULTI_READ */
+
+#undef TRACE_INCLUDE_PATH
+#define TRACE_INCLUDE_PATH .
+#undef TRACE_INCLUDE_FILE
+#define TRACE_INCLUDE_FILE trace
+#include <trace/define_trace.h>
diff --git a/net/mac802154/tx.c b/net/mac802154/tx.c
new file mode 100644
index 0000000000..2a6f1ed763
--- /dev/null
+++ b/net/mac802154/tx.c
@@ -0,0 +1,253 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright 2007-2012 Siemens AG
+ *
+ * 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/if_arp.h>
+#include <linux/crc-ccitt.h>
+#include <asm/unaligned.h>
+
+#include <net/rtnetlink.h>
+#include <net/ieee802154_netdev.h>
+#include <net/mac802154.h>
+#include <net/cfg802154.h>
+
+#include "ieee802154_i.h"
+#include "driver-ops.h"
+
+void ieee802154_xmit_sync_worker(struct work_struct *work)
+{
+ struct ieee802154_local *local =
+ container_of(work, struct ieee802154_local, sync_tx_work);
+ struct sk_buff *skb = local->tx_skb;
+ struct net_device *dev = skb->dev;
+ int res;
+
+ res = drv_xmit_sync(local, skb);
+ if (res)
+ goto err_tx;
+
+ dev->stats.tx_packets++;
+ dev->stats.tx_bytes += skb->len;
+
+ ieee802154_xmit_complete(&local->hw, skb, false);
+
+ return;
+
+err_tx:
+ /* Restart the netif queue on each sub_if_data object. */
+ ieee802154_release_queue(local);
+ if (atomic_dec_and_test(&local->phy->ongoing_txs))
+ wake_up(&local->phy->sync_txq);
+ kfree_skb(skb);
+ netdev_dbg(dev, "transmission failed\n");
+}
+
+static netdev_tx_t
+ieee802154_tx(struct ieee802154_local *local, struct sk_buff *skb)
+{
+ struct net_device *dev = skb->dev;
+ int ret;
+
+ if (!(local->hw.flags & IEEE802154_HW_TX_OMIT_CKSUM)) {
+ struct sk_buff *nskb;
+ u16 crc;
+
+ if (unlikely(skb_tailroom(skb) < IEEE802154_FCS_LEN)) {
+ nskb = skb_copy_expand(skb, 0, IEEE802154_FCS_LEN,
+ GFP_ATOMIC);
+ if (likely(nskb)) {
+ consume_skb(skb);
+ skb = nskb;
+ } else {
+ goto err_free_skb;
+ }
+ }
+
+ crc = crc_ccitt(0, skb->data, skb->len);
+ put_unaligned_le16(crc, skb_put(skb, 2));
+ }
+
+ /* Stop the netif queue on each sub_if_data object. */
+ ieee802154_hold_queue(local);
+ atomic_inc(&local->phy->ongoing_txs);
+
+ /* Drivers should preferably implement the async callback. In some rare
+ * cases they only provide a sync callback which we will use as a
+ * fallback.
+ */
+ if (local->ops->xmit_async) {
+ unsigned int len = skb->len;
+
+ ret = drv_xmit_async(local, skb);
+ if (ret)
+ goto err_wake_netif_queue;
+
+ dev->stats.tx_packets++;
+ dev->stats.tx_bytes += len;
+ } else {
+ local->tx_skb = skb;
+ queue_work(local->workqueue, &local->sync_tx_work);
+ }
+
+ return NETDEV_TX_OK;
+
+err_wake_netif_queue:
+ ieee802154_release_queue(local);
+ if (atomic_dec_and_test(&local->phy->ongoing_txs))
+ wake_up(&local->phy->sync_txq);
+err_free_skb:
+ kfree_skb(skb);
+ return NETDEV_TX_OK;
+}
+
+static int ieee802154_sync_queue(struct ieee802154_local *local)
+{
+ int ret;
+
+ ieee802154_hold_queue(local);
+ ieee802154_disable_queue(local);
+ wait_event(local->phy->sync_txq, !atomic_read(&local->phy->ongoing_txs));
+ ret = local->tx_result;
+ ieee802154_release_queue(local);
+
+ return ret;
+}
+
+int ieee802154_sync_and_hold_queue(struct ieee802154_local *local)
+{
+ int ret;
+
+ ieee802154_hold_queue(local);
+ ret = ieee802154_sync_queue(local);
+ set_bit(WPAN_PHY_FLAG_STATE_QUEUE_STOPPED, &local->phy->flags);
+
+ return ret;
+}
+
+int ieee802154_mlme_op_pre(struct ieee802154_local *local)
+{
+ return ieee802154_sync_and_hold_queue(local);
+}
+
+int ieee802154_mlme_tx_locked(struct ieee802154_local *local,
+ struct ieee802154_sub_if_data *sdata,
+ struct sk_buff *skb)
+{
+ /* Avoid possible calls to ->ndo_stop() when we asynchronously perform
+ * MLME transmissions.
+ */
+ ASSERT_RTNL();
+
+ /* Ensure the device was not stopped, otherwise error out */
+ if (!local->open_count)
+ return -ENETDOWN;
+
+ /* Warn if the ieee802154 core thinks MLME frames can be sent while the
+ * net interface expects this cannot happen.
+ */
+ if (WARN_ON_ONCE(!netif_running(sdata->dev)))
+ return -ENETDOWN;
+
+ ieee802154_tx(local, skb);
+ return ieee802154_sync_queue(local);
+}
+
+int ieee802154_mlme_tx(struct ieee802154_local *local,
+ struct ieee802154_sub_if_data *sdata,
+ struct sk_buff *skb)
+{
+ int ret;
+
+ rtnl_lock();
+ ret = ieee802154_mlme_tx_locked(local, sdata, skb);
+ rtnl_unlock();
+
+ return ret;
+}
+
+void ieee802154_mlme_op_post(struct ieee802154_local *local)
+{
+ ieee802154_release_queue(local);
+}
+
+int ieee802154_mlme_tx_one(struct ieee802154_local *local,
+ struct ieee802154_sub_if_data *sdata,
+ struct sk_buff *skb)
+{
+ int ret;
+
+ ieee802154_mlme_op_pre(local);
+ ret = ieee802154_mlme_tx(local, sdata, skb);
+ ieee802154_mlme_op_post(local);
+
+ return ret;
+}
+
+int ieee802154_mlme_tx_one_locked(struct ieee802154_local *local,
+ struct ieee802154_sub_if_data *sdata,
+ struct sk_buff *skb)
+{
+ int ret;
+
+ ieee802154_mlme_op_pre(local);
+ ret = ieee802154_mlme_tx_locked(local, sdata, skb);
+ ieee802154_mlme_op_post(local);
+
+ return ret;
+}
+
+static bool ieee802154_queue_is_stopped(struct ieee802154_local *local)
+{
+ return test_bit(WPAN_PHY_FLAG_STATE_QUEUE_STOPPED, &local->phy->flags);
+}
+
+static netdev_tx_t
+ieee802154_hot_tx(struct ieee802154_local *local, struct sk_buff *skb)
+{
+ /* Warn if the net interface tries to transmit frames while the
+ * ieee802154 core assumes the queue is stopped.
+ */
+ WARN_ON_ONCE(ieee802154_queue_is_stopped(local));
+
+ return ieee802154_tx(local, skb);
+}
+
+netdev_tx_t
+ieee802154_monitor_start_xmit(struct sk_buff *skb, struct net_device *dev)
+{
+ struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
+
+ skb->skb_iif = dev->ifindex;
+
+ return ieee802154_hot_tx(sdata->local, skb);
+}
+
+netdev_tx_t
+ieee802154_subif_start_xmit(struct sk_buff *skb, struct net_device *dev)
+{
+ struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
+ int rc;
+
+ /* TODO we should move it to wpan_dev_hard_header and dev_hard_header
+ * functions. The reason is wireshark will show a mac header which is
+ * with security fields but the payload is not encrypted.
+ */
+ rc = mac802154_llsec_encrypt(&sdata->sec, skb);
+ if (rc) {
+ netdev_warn(dev, "encryption failed: %i\n", rc);
+ kfree_skb(skb);
+ return NETDEV_TX_OK;
+ }
+
+ skb->skb_iif = dev->ifindex;
+
+ return ieee802154_hot_tx(sdata->local, skb);
+}
diff --git a/net/mac802154/util.c b/net/mac802154/util.c
new file mode 100644
index 0000000000..ebc9a85217
--- /dev/null
+++ b/net/mac802154/util.c
@@ -0,0 +1,173 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ *
+ * Authors:
+ * Alexander Aring <aar@pengutronix.de>
+ *
+ * Based on: net/mac80211/util.c
+ */
+
+#include "ieee802154_i.h"
+#include "driver-ops.h"
+
+/* privid for wpan_phys to determine whether they belong to us or not */
+const void *const mac802154_wpan_phy_privid = &mac802154_wpan_phy_privid;
+
+/**
+ * ieee802154_wake_queue - wake ieee802154 queue
+ * @hw: main hardware object
+ *
+ * Tranceivers usually have either one transmit framebuffer or one framebuffer
+ * for both transmitting and receiving. Hence, the core currently only handles
+ * one frame at a time for each phy, which means we had to stop the queue to
+ * avoid new skb to come during the transmission. The queue then needs to be
+ * woken up after the operation.
+ */
+static void ieee802154_wake_queue(struct ieee802154_hw *hw)
+{
+ struct ieee802154_local *local = hw_to_local(hw);
+ struct ieee802154_sub_if_data *sdata;
+
+ rcu_read_lock();
+ clear_bit(WPAN_PHY_FLAG_STATE_QUEUE_STOPPED, &local->phy->flags);
+ list_for_each_entry_rcu(sdata, &local->interfaces, list) {
+ if (!sdata->dev)
+ continue;
+
+ netif_wake_queue(sdata->dev);
+ }
+ rcu_read_unlock();
+}
+
+/**
+ * ieee802154_stop_queue - stop ieee802154 queue
+ * @hw: main hardware object
+ *
+ * Tranceivers usually have either one transmit framebuffer or one framebuffer
+ * for both transmitting and receiving. Hence, the core currently only handles
+ * one frame at a time for each phy, which means we need to tell upper layers to
+ * stop giving us new skbs while we are busy with the transmitted one. The queue
+ * must then be stopped before transmitting.
+ */
+static void ieee802154_stop_queue(struct ieee802154_hw *hw)
+{
+ struct ieee802154_local *local = hw_to_local(hw);
+ struct ieee802154_sub_if_data *sdata;
+
+ rcu_read_lock();
+ list_for_each_entry_rcu(sdata, &local->interfaces, list) {
+ if (!sdata->dev)
+ continue;
+
+ netif_stop_queue(sdata->dev);
+ }
+ rcu_read_unlock();
+}
+
+void ieee802154_hold_queue(struct ieee802154_local *local)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&local->phy->queue_lock, flags);
+ if (!atomic_fetch_inc(&local->phy->hold_txs))
+ ieee802154_stop_queue(&local->hw);
+ spin_unlock_irqrestore(&local->phy->queue_lock, flags);
+}
+
+void ieee802154_release_queue(struct ieee802154_local *local)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&local->phy->queue_lock, flags);
+ if (atomic_dec_and_test(&local->phy->hold_txs))
+ ieee802154_wake_queue(&local->hw);
+ spin_unlock_irqrestore(&local->phy->queue_lock, flags);
+}
+
+void ieee802154_disable_queue(struct ieee802154_local *local)
+{
+ struct ieee802154_sub_if_data *sdata;
+
+ rcu_read_lock();
+ list_for_each_entry_rcu(sdata, &local->interfaces, list) {
+ if (!sdata->dev)
+ continue;
+
+ netif_tx_disable(sdata->dev);
+ }
+ rcu_read_unlock();
+}
+
+enum hrtimer_restart ieee802154_xmit_ifs_timer(struct hrtimer *timer)
+{
+ struct ieee802154_local *local =
+ container_of(timer, struct ieee802154_local, ifs_timer);
+
+ ieee802154_release_queue(local);
+
+ return HRTIMER_NORESTART;
+}
+
+void ieee802154_xmit_complete(struct ieee802154_hw *hw, struct sk_buff *skb,
+ bool ifs_handling)
+{
+ struct ieee802154_local *local = hw_to_local(hw);
+
+ local->tx_result = IEEE802154_SUCCESS;
+
+ if (ifs_handling) {
+ u8 max_sifs_size;
+
+ /* If transceiver sets CRC on his own we need to use lifs
+ * threshold len above 16 otherwise 18, because it's not
+ * part of skb->len.
+ */
+ if (hw->flags & IEEE802154_HW_TX_OMIT_CKSUM)
+ max_sifs_size = IEEE802154_MAX_SIFS_FRAME_SIZE -
+ IEEE802154_FCS_LEN;
+ else
+ max_sifs_size = IEEE802154_MAX_SIFS_FRAME_SIZE;
+
+ if (skb->len > max_sifs_size)
+ hrtimer_start(&local->ifs_timer,
+ hw->phy->lifs_period * NSEC_PER_USEC,
+ HRTIMER_MODE_REL);
+ else
+ hrtimer_start(&local->ifs_timer,
+ hw->phy->sifs_period * NSEC_PER_USEC,
+ HRTIMER_MODE_REL);
+ } else {
+ ieee802154_release_queue(local);
+ }
+
+ dev_consume_skb_any(skb);
+ if (atomic_dec_and_test(&hw->phy->ongoing_txs))
+ wake_up(&hw->phy->sync_txq);
+}
+EXPORT_SYMBOL(ieee802154_xmit_complete);
+
+void ieee802154_xmit_error(struct ieee802154_hw *hw, struct sk_buff *skb,
+ int reason)
+{
+ struct ieee802154_local *local = hw_to_local(hw);
+
+ local->tx_result = reason;
+ ieee802154_release_queue(local);
+ dev_kfree_skb_any(skb);
+ if (atomic_dec_and_test(&hw->phy->ongoing_txs))
+ wake_up(&hw->phy->sync_txq);
+}
+EXPORT_SYMBOL(ieee802154_xmit_error);
+
+void ieee802154_xmit_hw_error(struct ieee802154_hw *hw, struct sk_buff *skb)
+{
+ ieee802154_xmit_error(hw, skb, IEEE802154_SYSTEM_ERROR);
+}
+EXPORT_SYMBOL(ieee802154_xmit_hw_error);
+
+void ieee802154_stop_device(struct ieee802154_local *local)
+{
+ flush_workqueue(local->workqueue);
+ hrtimer_cancel(&local->ifs_timer);
+ drv_stop(local);
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-12 06:20:38 +0000